build.gradle

@@ -95,7 +95,7 @@ repositories {
 
 configurations {
     embed
-    implementation.extendsFrom(embed)
+    compile.extendsFrom(embed)
 }
 
 dependencies {

src/main/java/de/ellpeck/prettypipes/Registry.java

@@ -8,8 +8,8 @@ import de.ellpeck.prettypipes.network.PipeNetwork;
 import de.ellpeck.prettypipes.packets.PacketHandler;
 import de.ellpeck.prettypipes.pipe.IPipeConnectable;
 import de.ellpeck.prettypipes.pipe.PipeBlock;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
 import de.ellpeck.prettypipes.pipe.PipeRenderer;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
 import de.ellpeck.prettypipes.pipe.containers.MainPipeContainer;
 import de.ellpeck.prettypipes.pipe.containers.MainPipeGui;
@@ -36,37 +36,39 @@ import de.ellpeck.prettypipes.pipe.modules.stacksize.StackSizeModuleContainer;
 import de.ellpeck.prettypipes.pipe.modules.stacksize.StackSizeModuleGui;
 import de.ellpeck.prettypipes.pipe.modules.stacksize.StackSizeModuleItem;
 import de.ellpeck.prettypipes.pressurizer.PressurizerBlock;
-import de.ellpeck.prettypipes.pressurizer.PressurizerBlockEntity;
 import de.ellpeck.prettypipes.pressurizer.PressurizerContainer;
 import de.ellpeck.prettypipes.pressurizer.PressurizerGui;
+import de.ellpeck.prettypipes.pressurizer.PressurizerBlockEntity;
 import de.ellpeck.prettypipes.terminal.CraftingTerminalBlock;
-import de.ellpeck.prettypipes.terminal.CraftingTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.CraftingTerminalTileEntity;
 import de.ellpeck.prettypipes.terminal.ItemTerminalBlock;
-import de.ellpeck.prettypipes.terminal.ItemTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.ItemTerminalTileEntity;
 import de.ellpeck.prettypipes.terminal.containers.CraftingTerminalContainer;
 import de.ellpeck.prettypipes.terminal.containers.CraftingTerminalGui;
 import de.ellpeck.prettypipes.terminal.containers.ItemTerminalContainer;
 import de.ellpeck.prettypipes.terminal.containers.ItemTerminalGui;
-import net.minecraft.client.gui.screens.MenuScreens;
+import net.minecraft.block.Block;
-import net.minecraft.client.renderer.ItemBlockRenderTypes;
+import net.minecraft.client.gui.ScreenManager;
 import net.minecraft.client.renderer.RenderType;
-import net.minecraft.client.renderer.blockentity.BlockEntityRenderers;
+import net.minecraft.client.renderer.RenderTypeLookup;
-import net.minecraft.client.renderer.entity.EntityRenderers;
+import net.minecraft.entity.EntityClassification;
-import net.minecraft.world.entity.EntityType;
+import net.minecraft.entity.EntityType;
-import net.minecraft.world.entity.MobCategory;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.item.BlockItem;
-import net.minecraft.world.item.BlockItem;
+import net.minecraft.item.Item;
-import net.minecraft.world.item.CreativeModeTab;
+import net.minecraft.item.ItemGroup;
-import net.minecraft.world.item.Item;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.block.Block;
+import net.minecraft.nbt.INBT;
-import net.minecraft.world.level.block.entity.BlockEntityType;
+import net.minecraft.tileentity.TileEntityType;
+import net.minecraft.util.Direction;
 import net.minecraftforge.common.capabilities.Capability;
+import net.minecraftforge.common.capabilities.CapabilityInject;
 import net.minecraftforge.common.capabilities.CapabilityManager;
-import net.minecraftforge.common.capabilities.CapabilityToken;
+import net.minecraftforge.common.extensions.IForgeContainerType;
-import net.minecraftforge.common.extensions.IForgeMenuType;
 import net.minecraftforge.event.RegistryEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
+import net.minecraftforge.fml.client.registry.ClientRegistry;
+import net.minecraftforge.fml.client.registry.RenderingRegistry;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.Mod.EventBusSubscriber.Bus;
 import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent;
@@ -74,6 +76,7 @@ import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent;
 import net.minecraftforge.registries.ForgeRegistries;
 import net.minecraftforge.registries.IForgeRegistry;
 
+import javax.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -83,46 +86,46 @@ import java.util.function.BiFunction;
 @Mod.EventBusSubscriber(bus = Bus.MOD)
 public final class Registry {
 
-    public static final CreativeModeTab TAB = new CreativeModeTab(PrettyPipes.ID) {
+    public static final ItemGroup GROUP = new ItemGroup(PrettyPipes.ID) {
         @Override
-        public ItemStack makeIcon() {
+        public ItemStack createIcon() {
             return new ItemStack(wrenchItem);
         }
     };
 
-    public static Capability<PipeNetwork> pipeNetworkCapability = CapabilityManager.get(new CapabilityToken<>() {
+    @CapabilityInject(PipeNetwork.class)
-    });
+    public static Capability<PipeNetwork> pipeNetworkCapability;
-    public static Capability<IPipeConnectable> pipeConnectableCapability = CapabilityManager.get(new CapabilityToken<>() {
+    @CapabilityInject(IPipeConnectable.class)
-    });
+    public static Capability<IPipeConnectable> pipeConnectableCapability;
 
     public static Item wrenchItem;
     public static Item pipeFrameItem;
 
     public static Block pipeBlock;
-    public static BlockEntityType<PipeBlockEntity> pipeBlockEntity;
+    public static TileEntityType<PipeTileEntity> pipeTileEntity;
-    public static MenuType<MainPipeContainer> pipeContainer;
+    public static ContainerType<MainPipeContainer> pipeContainer;
 
     public static Block itemTerminalBlock;
-    public static BlockEntityType<ItemTerminalBlockEntity> itemTerminalBlockEntity;
+    public static TileEntityType<ItemTerminalTileEntity> itemTerminalTileEntity;
-    public static MenuType<ItemTerminalContainer> itemTerminalContainer;
+    public static ContainerType<ItemTerminalContainer> itemTerminalContainer;
 
     public static Block craftingTerminalBlock;
-    public static BlockEntityType<CraftingTerminalBlockEntity> craftingTerminalBlockEntity;
+    public static TileEntityType<CraftingTerminalTileEntity> craftingTerminalTileEntity;
-    public static MenuType<CraftingTerminalContainer> craftingTerminalContainer;
+    public static ContainerType<CraftingTerminalContainer> craftingTerminalContainer;
 
     public static EntityType<PipeFrameEntity> pipeFrameEntity;
 
     public static Block pressurizerBlock;
-    public static BlockEntityType<PressurizerBlockEntity> pressurizerBlockEntity;
+    public static TileEntityType<PressurizerBlockEntity> pressurizerTileEntity;
-    public static MenuType<PressurizerContainer> pressurizerContainer;
+    public static ContainerType<PressurizerContainer> pressurizerContainer;
 
-    public static MenuType<ExtractionModuleContainer> extractionModuleContainer;
+    public static ContainerType<ExtractionModuleContainer> extractionModuleContainer;
-    public static MenuType<FilterModuleContainer> filterModuleContainer;
+    public static ContainerType<FilterModuleContainer> filterModuleContainer;
-    public static MenuType<RetrievalModuleContainer> retrievalModuleContainer;
+    public static ContainerType<RetrievalModuleContainer> retrievalModuleContainer;
-    public static MenuType<StackSizeModuleContainer> stackSizeModuleContainer;
+    public static ContainerType<StackSizeModuleContainer> stackSizeModuleContainer;
-    public static MenuType<FilterIncreaseModuleContainer> filterIncreaseModuleContainer;
+    public static ContainerType<FilterIncreaseModuleContainer> filterIncreaseModuleContainer;
-    public static MenuType<CraftingModuleContainer> craftingModuleContainer;
+    public static ContainerType<CraftingModuleContainer> craftingModuleContainer;
-    public static MenuType<FilterModifierModuleContainer> filterModifierModuleContainer;
+    public static ContainerType<FilterModifierModuleContainer> filterModifierModuleContainer;
 
     @SubscribeEvent
     public static void registerBlocks(RegistryEvent.Register<Block> event) {
@@ -136,10 +139,10 @@ public final class Registry {
 
     @SubscribeEvent
     public static void registerItems(RegistryEvent.Register<Item> event) {
-        var registry = event.getRegistry();
+        IForgeRegistry<Item> registry = event.getRegistry();
         registry.registerAll(
                 wrenchItem = new WrenchItem().setRegistryName("wrench"),
-                new Item(new Item.Properties().tab(TAB)).setRegistryName("blank_module"),
+                new Item(new Item.Properties().group(GROUP)).setRegistryName("blank_module"),
                 pipeFrameItem = new PipeFrameItem().setRegistryName("pipe_frame")
         );
         registry.registerAll(createTieredModule("extraction_module", ExtractionModuleItem::new));
@@ -157,33 +160,33 @@ public final class Registry {
 
         ForgeRegistries.BLOCKS.getValues().stream()
                 .filter(b -> b.getRegistryName().getNamespace().equals(PrettyPipes.ID))
-                .forEach(b -> registry.register(new BlockItem(b, new Item.Properties().tab(TAB)).setRegistryName(b.getRegistryName())));
+                .forEach(b -> registry.register(new BlockItem(b, new Item.Properties().group(GROUP)).setRegistryName(b.getRegistryName())));
     }
 
     @SubscribeEvent
-    public static void registerBlockEntities(RegistryEvent.Register<BlockEntityType<?>> event) {
+    public static void registerTiles(RegistryEvent.Register<TileEntityType<?>> event) {
         event.getRegistry().registerAll(
-                pipeBlockEntity = (BlockEntityType<PipeBlockEntity>) BlockEntityType.Builder.of(PipeBlockEntity::new, pipeBlock).build(null).setRegistryName("pipe"),
+                pipeTileEntity = (TileEntityType<PipeTileEntity>) TileEntityType.Builder.create(PipeTileEntity::new, pipeBlock).build(null).setRegistryName("pipe"),
-                itemTerminalBlockEntity = (BlockEntityType<ItemTerminalBlockEntity>) BlockEntityType.Builder.of(ItemTerminalBlockEntity::new, itemTerminalBlock).build(null).setRegistryName("item_terminal"),
+                itemTerminalTileEntity = (TileEntityType<ItemTerminalTileEntity>) TileEntityType.Builder.create(ItemTerminalTileEntity::new, itemTerminalBlock).build(null).setRegistryName("item_terminal"),
-                craftingTerminalBlockEntity = (BlockEntityType<CraftingTerminalBlockEntity>) BlockEntityType.Builder.of(CraftingTerminalBlockEntity::new, craftingTerminalBlock).build(null).setRegistryName("crafting_terminal"),
+                craftingTerminalTileEntity = (TileEntityType<CraftingTerminalTileEntity>) TileEntityType.Builder.create(CraftingTerminalTileEntity::new, craftingTerminalBlock).build(null).setRegistryName("crafting_terminal"),
-                pressurizerBlockEntity = (BlockEntityType<PressurizerBlockEntity>) BlockEntityType.Builder.of(PressurizerBlockEntity::new, pressurizerBlock).build(null).setRegistryName("pressurizer")
+                pressurizerTileEntity = (TileEntityType<PressurizerBlockEntity>) TileEntityType.Builder.create(PressurizerBlockEntity::new, pressurizerBlock).build(null).setRegistryName("pressurizer")
         );
     }
 
     @SubscribeEvent
     public static void registerEntities(RegistryEvent.Register<EntityType<?>> event) {
         event.getRegistry().registerAll(
-                pipeFrameEntity = (EntityType<PipeFrameEntity>) EntityType.Builder.<PipeFrameEntity>of(PipeFrameEntity::new, MobCategory.MISC).build("pipe_frame").setRegistryName("pipe_frame")
+                pipeFrameEntity = (EntityType<PipeFrameEntity>) EntityType.Builder.<PipeFrameEntity>create(PipeFrameEntity::new, EntityClassification.MISC).build("pipe_frame").setRegistryName("pipe_frame")
         );
     }
 
     @SubscribeEvent
-    public static void registerContainers(RegistryEvent.Register<MenuType<?>> event) {
+    public static void registerContainers(RegistryEvent.Register<ContainerType<?>> event) {
         event.getRegistry().registerAll(
-                pipeContainer = (MenuType<MainPipeContainer>) IForgeMenuType.create((windowId, inv, data) -> new MainPipeContainer(pipeContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("pipe"),
+                pipeContainer = (ContainerType<MainPipeContainer>) IForgeContainerType.create((windowId, inv, data) -> new MainPipeContainer(pipeContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("pipe"),
-                itemTerminalContainer = (MenuType<ItemTerminalContainer>) IForgeMenuType.create((windowId, inv, data) -> new ItemTerminalContainer(itemTerminalContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("item_terminal"),
+                itemTerminalContainer = (ContainerType<ItemTerminalContainer>) IForgeContainerType.create((windowId, inv, data) -> new ItemTerminalContainer(itemTerminalContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("item_terminal"),
-                craftingTerminalContainer = (MenuType<CraftingTerminalContainer>) IForgeMenuType.create((windowId, inv, data) -> new CraftingTerminalContainer(craftingTerminalContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("crafting_terminal"),
+                craftingTerminalContainer = (ContainerType<CraftingTerminalContainer>) IForgeContainerType.create((windowId, inv, data) -> new CraftingTerminalContainer(craftingTerminalContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("crafting_terminal"),
-                pressurizerContainer = (MenuType<PressurizerContainer>) IForgeMenuType.create((windowId, inv, data) -> new PressurizerContainer(pressurizerContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("pressurizer"),
+                pressurizerContainer = (ContainerType<PressurizerContainer>) IForgeContainerType.create((windowId, inv, data) -> new PressurizerContainer(pressurizerContainer, windowId, inv.player, data.readBlockPos())).setRegistryName("pressurizer"),
                 extractionModuleContainer = createPipeContainer("extraction_module"),
                 filterModuleContainer = createPipeContainer("filter_module"),
                 retrievalModuleContainer = createPipeContainer("retrieval_module"),
@@ -194,44 +197,60 @@ public final class Registry {
         );
     }
 
-    private static <T extends AbstractPipeContainer<?>> MenuType<T> createPipeContainer(String name) {
+    private static <T extends AbstractPipeContainer<?>> ContainerType<T> createPipeContainer(String name) {
-        return (MenuType<T>) IForgeMenuType.create((windowId, inv, data) -> {
+        return (ContainerType<T>) IForgeContainerType.create((windowId, inv, data) -> {
-            var tile = Utility.getBlockEntity(PipeBlockEntity.class, inv.player.level, data.readBlockPos());
+            PipeTileEntity tile = Utility.getBlockEntity(PipeTileEntity.class, inv.player.world, data.readBlockPos());
-            var moduleIndex = data.readInt();
+            int moduleIndex = data.readInt();
-            var moduleStack = tile.modules.getStackInSlot(moduleIndex);
+            ItemStack moduleStack = tile.modules.getStackInSlot(moduleIndex);
             return ((IModule) moduleStack.getItem()).getContainer(moduleStack, tile, windowId, inv, inv.player, moduleIndex);
         }).setRegistryName(name);
     }
 
     private static Item[] createTieredModule(String name, BiFunction<String, ModuleTier, ModuleItem> item) {
         List<Item> items = new ArrayList<>();
-        for (var tier : ModuleTier.values())
+        for (ModuleTier tier : ModuleTier.values())
             items.add(item.apply(name, tier).setRegistryName(tier.name().toLowerCase(Locale.ROOT) + "_" + name));
         return items.toArray(new Item[0]);
     }
 
     public static void setup(FMLCommonSetupEvent event) {
+        registerCap(PipeNetwork.class);
+        registerCap(IPipeConnectable.class);
         PacketHandler.setup();
     }
 
     public static final class Client {
-
         public static void setup(FMLClientSetupEvent event) {
-            ItemBlockRenderTypes.setRenderLayer(pipeBlock, RenderType.cutout());
+            RenderTypeLookup.setRenderLayer(pipeBlock, RenderType.getCutout());
-            BlockEntityRenderers.register(pipeBlockEntity, PipeRenderer::new);
+            ClientRegistry.bindTileEntityRenderer(pipeTileEntity, PipeRenderer::new);
-            EntityRenderers.register(pipeFrameEntity, PipeFrameRenderer::new);
+            RenderingRegistry.registerEntityRenderingHandler(pipeFrameEntity, PipeFrameRenderer::new);
 
-            MenuScreens.register(pipeContainer, MainPipeGui::new);
+            ScreenManager.registerFactory(pipeContainer, MainPipeGui::new);
-            MenuScreens.register(itemTerminalContainer, ItemTerminalGui::new);
+            ScreenManager.registerFactory(itemTerminalContainer, ItemTerminalGui::new);
-            MenuScreens.register(pressurizerContainer, PressurizerGui::new);
+            ScreenManager.registerFactory(pressurizerContainer, PressurizerGui::new);
-            MenuScreens.register(craftingTerminalContainer, CraftingTerminalGui::new);
+            ScreenManager.registerFactory(craftingTerminalContainer, CraftingTerminalGui::new);
-            MenuScreens.register(extractionModuleContainer, ExtractionModuleGui::new);
+            ScreenManager.registerFactory(extractionModuleContainer, ExtractionModuleGui::new);
-            MenuScreens.register(filterModuleContainer, FilterModuleGui::new);
+            ScreenManager.registerFactory(filterModuleContainer, FilterModuleGui::new);
-            MenuScreens.register(retrievalModuleContainer, RetrievalModuleGui::new);
+            ScreenManager.registerFactory(retrievalModuleContainer, RetrievalModuleGui::new);
-            MenuScreens.register(stackSizeModuleContainer, StackSizeModuleGui::new);
+            ScreenManager.registerFactory(stackSizeModuleContainer, StackSizeModuleGui::new);
-            MenuScreens.register(filterIncreaseModuleContainer, FilterIncreaseModuleGui::new);
+            ScreenManager.registerFactory(filterIncreaseModuleContainer, FilterIncreaseModuleGui::new);
-            MenuScreens.register(craftingModuleContainer, CraftingModuleGui::new);
+            ScreenManager.registerFactory(craftingModuleContainer, CraftingModuleGui::new);
-            MenuScreens.register(filterModifierModuleContainer, FilterModifierModuleGui::new);
+            ScreenManager.registerFactory(filterModifierModuleContainer, FilterModifierModuleGui::new);
         }
     }
+
+    private static <T> void registerCap(Class<T> capClass) {
+        CapabilityManager.INSTANCE.register(capClass, new Capability.IStorage<T>() {
+            @Nullable
+            @Override
+            public INBT writeNBT(Capability<T> capability, T instance, Direction side) {
+                return null;
+            }
+
+            @Override
+            public void readNBT(Capability<T> capability, T instance, Direction side, INBT nbt) {
+
+            }
+        }, () -> null);
+    }
 }

src/main/java/de/ellpeck/prettypipes/Utility.java

@@ -5,20 +5,25 @@ import net.minecraft.client.gui.screens.Screen;
 import net.minecraft.client.resources.language.I18n;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.ListTag;
 import net.minecraft.network.chat.*;
 import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket;
 import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.world.Containers;
+import net.minecraft.world.WorldlyContainer;
 import net.minecraft.world.WorldlyContainerHolder;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.world.inventory.Slot;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.BlockGetter;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
 import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.Level;
+import net.minecraft.world.level.LevelAccessor;
+import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.state.BlockState;
 import net.minecraftforge.common.util.INBTSerializable;
 import net.minecraftforge.items.IItemHandler;
 import net.minecraftforge.items.wrapper.SidedInvWrapper;
@@ -31,7 +36,7 @@ import java.util.function.Function;
 
 public final class Utility {
 
-    public static <T extends BlockEntity> T getBlockEntity(Class<T> type, BlockGetter world, BlockPos pos) {
+    public static <T extends BlockEntity> T getBlockEntity(Class<T> type, LevelAccessor world, BlockPos pos) {
         var tile = world.getBlockEntity(pos);
         return type.isInstance(tile) ? (T) tile : null;
     }
@@ -50,7 +55,7 @@ public final class Utility {
         return Direction.fromNormal(diff.getX(), diff.getY(), diff.getZ());
     }
 
-    public static void addTooltip(String name, List<Component> tooltip) {
+    public static void addTooltip(String name, List<MutableComponent> tooltip) {
         if (Screen.hasShiftDown()) {
             var content = I18n.get("info." + PrettyPipes.ID + "." + name).split("\n");
             for (var s : content)

src/main/java/de/ellpeck/prettypipes/entities/PipeFrameEntity.java

@@ -1,29 +1,42 @@
 package de.ellpeck.prettypipes.entities;
 
 import de.ellpeck.prettypipes.Registry;
+import de.ellpeck.prettypipes.network.NetworkLocation;
 import de.ellpeck.prettypipes.network.PipeNetwork;
 import de.ellpeck.prettypipes.pipe.PipeBlock;
+import net.minecraft.block.BlockState;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
-import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityType;
+import net.minecraft.entity.item.ItemFrameEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.FilledMapItem;
 import net.minecraft.network.syncher.EntityDataAccessor;
 import net.minecraft.network.syncher.EntityDataSerializers;
 import net.minecraft.network.syncher.SynchedEntityData;
-import net.minecraft.sounds.SoundEvents;
-import net.minecraft.world.InteractionHand;
-import net.minecraft.world.InteractionResult;
-import net.minecraft.world.damagesource.DamageSource;
-import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.entity.decoration.ItemFrame;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.GameRules;
+import net.minecraft.item.Items;
+import net.minecraft.network.IPacket;
+import net.minecraft.network.PacketBuffer;
+import net.minecraft.network.datasync.DataParameter;
+import net.minecraft.network.datasync.DataSerializers;
+import net.minecraft.network.datasync.EntityDataManager;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.world.GameRules;
+import net.minecraft.world.World;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.phys.HitResult;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.storage.MapData;
 import net.minecraftforge.entity.IEntityAdditionalSpawnData;
+import net.minecraftforge.fml.common.registry.IEntityAdditionalSpawnData;
+import net.minecraftforge.fml.network.NetworkHooks;
 
 import javax.annotation.Nullable;
+import java.util.List;
 
 public class PipeFrameEntity extends ItemFrame implements IEntityAdditionalSpawnData {
 
@@ -52,15 +65,15 @@ public class PipeFrameEntity extends ItemFrame implements IEntityAdditionalSpawn
             return;
         if (this.tickCount % 40 != 0)
             return;
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.level);
-        var attached = getAttachedPipe(this.level, this.pos, this.direction);
+        BlockPos attached = getAttachedPipe(this.level, this.pos, this.direction);
         if (attached != null) {
-            var node = network.getNodeFromPipe(attached);
+            BlockPos node = network.getNodeFromPipe(attached);
             if (node != null) {
-                var stack = this.getItem();
+                ItemStack stack = this.getItem();
                 if (!stack.isEmpty()) {
-                    var items = network.getOrderedNetworkItems(node);
+                    List<NetworkLocation> items = network.getOrderedNetworkItems(node);
-                    var amount = items.stream().mapToInt(i -> i.getItemAmount(this.level, stack)).sum();
+                    int amount = items.stream().mapToInt(i -> i.getItemAmount(this.level, stack)).sum();
                     this.entityData.set(AMOUNT, amount);
                     return;
                 }
@@ -70,97 +83,103 @@ public class PipeFrameEntity extends ItemFrame implements IEntityAdditionalSpawn
     }
 
     @Override
-    public boolean survives() {
+    public boolean onValidSurface() {
-        return super.survives() && canPlace(this.level, this.pos, this.direction);
+        return super.onValidSurface() && canPlace(this.world, this.hangingPosition, this.facingDirection);
     }
 
     private static BlockPos getAttachedPipe(Level world, BlockPos pos, Direction direction) {
-        for (var i = 1; i <= 2; i++) {
+        for (int i = 1; i <= 2; i++) {
-            var offset = pos.relative(direction.getOpposite(), i);
+            BlockPos offset = pos.relative(direction.getOpposite(), i);
-            var state = world.getBlockState(offset);
+            BlockState state = world.getBlockState(offset);
             if (state.getBlock() instanceof PipeBlock)
                 return offset;
         }
         return null;
     }
 
-    public static boolean canPlace(Level world, BlockPos pos, Direction direction) {
+    public static boolean canPlace(World world, BlockPos pos, Direction direction) {
         return getAttachedPipe(world, pos, direction) != null;
     }
 
     public int getAmount() {
-        return this.entityData.get(AMOUNT);
+        return this.dataManager.get(AMOUNT);
     }
 
     @Override
-    public boolean hurt(DamageSource source, float amount) {
+    public boolean attackEntityFrom(DamageSource source, float amount) {
         if (this.isInvulnerableTo(source)) {
             return false;
-        } else if (!source.isExplosion() && !this.getItem().isEmpty()) {
+        } else if (!source.isExplosion() && !this.getDisplayedItem().isEmpty()) {
-            if (!this.level.isClientSide) {
+            if (!this.world.isRemote) {
-                this.dropItemOrSelf(source.getDirectEntity(), false);
+                this.dropItemOrSelf(source.getTrueSource(), false);
-                this.playSound(SoundEvents.ITEM_FRAME_REMOVE_ITEM, 1.0F, 1.0F);
+                this.playSound(SoundEvents.ENTITY_ITEM_FRAME_REMOVE_ITEM, 1.0F, 1.0F);
             }
 
             return true;
         } else {
-            return super.hurt(source, amount);
+            return super.attackEntityFrom(source, amount);
         }
     }
 
     @Override
-    public void dropItem(@Nullable Entity brokenEntity) {
+    public void onBroken(@Nullable Entity brokenEntity) {
-        this.playSound(SoundEvents.ITEM_FRAME_BREAK, 1.0F, 1.0F);
+        this.playSound(SoundEvents.ENTITY_ITEM_FRAME_BREAK, 1.0F, 1.0F);
         this.dropItemOrSelf(brokenEntity, true);
     }
 
     private void dropItemOrSelf(@Nullable Entity entityIn, boolean b) {
-        if (!this.level.getGameRules().getBoolean(GameRules.RULE_DOENTITYDROPS)) {
+        if (!this.world.getGameRules().getBoolean(GameRules.DO_ENTITY_DROPS)) {
             if (entityIn == null)
-                this.getItem().setEntityRepresentation(null);
+                this.getDisplayedItem().setAttachedEntity(null);
         } else {
-            var itemstack = this.getItem();
+            ItemStack itemstack = this.getDisplayedItem();
-            this.setItem(ItemStack.EMPTY);
+            this.setDisplayedItem(ItemStack.EMPTY);
-            if (entityIn instanceof Player playerentity) {
+            if (entityIn instanceof PlayerEntity) {
-                if (playerentity.isCreative()) {
+                PlayerEntity playerentity = (PlayerEntity) entityIn;
-                    itemstack.setEntityRepresentation(null);
+                if (playerentity.abilities.isCreativeMode) {
+                    itemstack.setAttachedEntity(null);
                     return;
                 }
             }
 
             if (b)
-                this.spawnAtLocation(Registry.pipeFrameItem);
+                this.entityDropItem(Registry.pipeFrameItem);
 
             if (!itemstack.isEmpty()) {
                 itemstack = itemstack.copy();
-                itemstack.setEntityRepresentation(null);
+                itemstack.setAttachedEntity(null);
-                this.spawnAtLocation(itemstack);
+                this.entityDropItem(itemstack);
             }
 
         }
     }
 
     @Override
-    public InteractionResult interact(Player player, InteractionHand hand) {
+    public ActionResultType processInitialInteract(PlayerEntity player, Hand hand) {
-        if (this.getItem().isEmpty())
+        if (this.getDisplayedItem().isEmpty())
-            return super.interact(player, hand);
+            return super.processInitialInteract(player, hand);
-        return InteractionResult.FAIL;
+        return ActionResultType.FAIL;
     }
 
     @Override
-    public ItemStack getPickedResult(HitResult target) {
+    public ItemStack getPickedResult(RayTraceResult target) {
         return new ItemStack(Registry.pipeFrameItem);
     }
 
     @Override
-    public void writeSpawnData(FriendlyByteBuf buffer) {
+    public IPacket<?> createSpawnPacket() {
-        buffer.writeBlockPos(this.pos);
+        return NetworkHooks.getEntitySpawningPacket(this);
-        buffer.writeInt(this.direction.ordinal());
     }
 
     @Override
-    public void readSpawnData(FriendlyByteBuf additionalData) {
+    public void writeSpawnData(PacketBuffer buffer) {
-        this.pos = additionalData.readBlockPos();
+        buffer.writeBlockPos(this.hangingPosition);
-        this.direction = Direction.values()[additionalData.readInt()];
+        buffer.writeInt(this.facingDirection.getIndex());
+    }
+
+    @Override
+    public void readSpawnData(PacketBuffer additionalData) {
+        this.hangingPosition = additionalData.readBlockPos();
+        this.updateFacingWithBoundingBox(Direction.values()[additionalData.readInt()]);
     }
 }

src/main/java/de/ellpeck/prettypipes/entities/PipeFrameRenderer.java

@@ -1,37 +1,42 @@
 package de.ellpeck.prettypipes.entities;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
-import com.mojang.math.Vector3f;
+import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.gui.FontRenderer;
-import net.minecraft.client.renderer.entity.EntityRendererProvider;
+import net.minecraft.client.renderer.IRenderTypeBuffer;
+import net.minecraft.client.renderer.entity.EntityRendererManager;
 import net.minecraft.client.renderer.entity.ItemFrameRenderer;
+import net.minecraft.entity.item.ItemFrameEntity;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.Vector3d;
+import net.minecraft.util.math.vector.Vector3f;
 
-public class PipeFrameRenderer extends ItemFrameRenderer<PipeFrameEntity> {
+public class PipeFrameRenderer extends ItemFrameRenderer {
-
+    public PipeFrameRenderer(EntityRendererManager renderManagerIn) {
-    public PipeFrameRenderer(EntityRendererProvider.Context renderManagerIn) {
+        super(renderManagerIn, Minecraft.getInstance().getItemRenderer());
-        super(renderManagerIn);
     }
 
     @Override
-    public void render(PipeFrameEntity entityIn, float entityYaw, float partialTicks, PoseStack matrixStackIn, MultiBufferSource bufferIn, int packedLightIn) {
+    public void render(ItemFrameEntity entityIn, float entityYaw, float partialTicks, MatrixStack matrixStackIn, IRenderTypeBuffer bufferIn, int packedLightIn) {
         super.render(entityIn, entityYaw, partialTicks, matrixStackIn, bufferIn, packedLightIn);
-        matrixStackIn.pushPose();
+        matrixStackIn.push();
-        var direction = entityIn.getDirection();
+        Direction direction = entityIn.getHorizontalFacing();
-        var vec3d = this.getRenderOffset(entityIn, partialTicks);
+        Vector3d vec3d = this.getRenderOffset(entityIn, partialTicks);
-        matrixStackIn.translate(-vec3d.x, -vec3d.y, -vec3d.z);
+        matrixStackIn.translate(-vec3d.getX(), -vec3d.getY(), -vec3d.getZ());
-        matrixStackIn.translate(direction.getStepX() * 0.46875, direction.getStepY() * 0.46875, direction.getStepZ() * 0.46875);
+        matrixStackIn.translate(direction.getXOffset() * 0.46875, direction.getYOffset() * 0.46875, direction.getZOffset() * 0.46875);
-        matrixStackIn.mulPose(Vector3f.XP.rotationDegrees(entityIn.getXRot()));
+        matrixStackIn.rotate(Vector3f.XP.rotationDegrees(entityIn.rotationPitch));
-        matrixStackIn.mulPose(Vector3f.YP.rotationDegrees(180.0F - entityIn.getYRot()));
+        matrixStackIn.rotate(Vector3f.YP.rotationDegrees(180.0F - entityIn.rotationYaw));
 
-        var font = this.getFont();
+        FontRenderer font = this.getFontRendererFromRenderManager();
-        var amount = entityIn.getAmount();
+        int amount = ((PipeFrameEntity) entityIn).getAmount();
-        var ammountStrg = amount < 0 ? "?" : String.valueOf(amount);
+        String ammountStrg = amount < 0 ? "?" : String.valueOf(amount);
-        var x = 0.5F - font.width(ammountStrg) / 2F;
+        float x = 0.5F - font.getStringWidth(ammountStrg) / 2F;
-        var matrix4f = matrixStackIn.last().pose();
+        Matrix4f matrix4f = matrixStackIn.getLast().getMatrix();
         matrixStackIn.translate(0, 0.285F, 0.415F);
         matrixStackIn.scale(-0.02F, -0.02F, 0.02F);
-        font.drawInBatch(ammountStrg, x, 0, 0xFFFFFF, true, matrix4f, bufferIn, false, 0, packedLightIn);
+        font.renderString(ammountStrg, x, 0, 0xFFFFFF, true, matrix4f, bufferIn, false, 0, packedLightIn);
 
-        matrixStackIn.popPose();
+        matrixStackIn.pop();
     }
 }

src/main/java/de/ellpeck/prettypipes/items/IModule.java

@@ -1,12 +1,12 @@
 package de.ellpeck.prettypipes.items;
 
 import de.ellpeck.prettypipes.misc.ItemFilter;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
 import net.minecraftforge.items.IItemHandler;
 
 import java.util.List;
@@ -15,33 +15,33 @@ import java.util.function.Consumer;
 
 public interface IModule {
 
-    void tick(ItemStack module, PipeBlockEntity tile);
+    void tick(ItemStack module, PipeTileEntity tile);
 
-    boolean canNetworkSee(ItemStack module, PipeBlockEntity tile);
+    boolean canNetworkSee(ItemStack module, PipeTileEntity tile);
 
-    boolean canAcceptItem(ItemStack module, PipeBlockEntity tile, ItemStack stack);
+    boolean canAcceptItem(ItemStack module, PipeTileEntity tile, ItemStack stack);
 
-    int getMaxInsertionAmount(ItemStack module, PipeBlockEntity tile, ItemStack stack, IItemHandler destination);
+    int getMaxInsertionAmount(ItemStack module, PipeTileEntity tile, ItemStack stack, IItemHandler destination);
 
-    int getPriority(ItemStack module, PipeBlockEntity tile);
+    int getPriority(ItemStack module, PipeTileEntity tile);
 
-    boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other);
+    boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other);
 
-    boolean hasContainer(ItemStack module, PipeBlockEntity tile);
+    boolean hasContainer(ItemStack module, PipeTileEntity tile);
 
-    AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex);
+    AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex);
 
-    float getItemSpeedIncrease(ItemStack module, PipeBlockEntity tile);
+    float getItemSpeedIncrease(ItemStack module, PipeTileEntity tile);
 
-    boolean canPipeWork(ItemStack module, PipeBlockEntity tile);
+    boolean canPipeWork(ItemStack module, PipeTileEntity tile);
 
-    List<ItemStack> getAllCraftables(ItemStack module, PipeBlockEntity tile);
+    List<ItemStack> getAllCraftables(ItemStack module, PipeTileEntity tile);
 
-    int getCraftableAmount(ItemStack module, PipeBlockEntity tile, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain);
+    int getCraftableAmount(ItemStack module, PipeTileEntity tile, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain);
 
-    ItemStack craft(ItemStack module, PipeBlockEntity tile, BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain);
+    ItemStack craft(ItemStack module, PipeTileEntity tile, BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain);
 
-    Integer getCustomNextNode(ItemStack module, PipeBlockEntity tile, List<BlockPos> nodes, int index);
+    Integer getCustomNextNode(ItemStack module, PipeTileEntity tile, List<BlockPos> nodes, int index);
 
-    ItemFilter getItemFilter(ItemStack module, PipeBlockEntity tile);
+    ItemFilter getItemFilter(ItemStack module, PipeTileEntity tile);
 }

src/main/java/de/ellpeck/prettypipes/items/ModuleItem.java

@@ -3,16 +3,16 @@ package de.ellpeck.prettypipes.items;
 import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.misc.ItemFilter;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.client.util.ITooltipFlag;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.item.Item;
-import net.minecraft.world.item.Item;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.TooltipFlag;
+import net.minecraft.util.math.BlockPos;
-import net.minecraft.world.level.Level;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.items.IItemHandler;
@@ -28,79 +28,79 @@ public abstract class ModuleItem extends Item implements IModule {
     private final String name;
 
     public ModuleItem(String name) {
-        super(new Properties().tab(Registry.TAB).stacksTo(16));
+        super(new Properties().group(Registry.GROUP).maxStackSize(16));
         this.name = name;
     }
 
     @Override
     @OnlyIn(Dist.CLIENT)
-    public void appendHoverText(ItemStack stack, @Nullable Level worldIn, List<Component> tooltip, TooltipFlag flagIn) {
+    public void addInformation(ItemStack stack, @Nullable World worldIn, List<ITextComponent> tooltip, ITooltipFlag flagIn) {
-        super.appendHoverText(stack, worldIn, tooltip, flagIn);
+        super.addInformation(stack, worldIn, tooltip, flagIn);
         Utility.addTooltip(this.name, tooltip);
     }
 
     @Override
-    public void tick(ItemStack module, PipeBlockEntity tile) {
+    public void tick(ItemStack module, PipeTileEntity tile) {
 
     }
 
     @Override
-    public boolean canNetworkSee(ItemStack module, PipeBlockEntity tile) {
+    public boolean canNetworkSee(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public boolean canAcceptItem(ItemStack module, PipeBlockEntity tile, ItemStack stack) {
+    public boolean canAcceptItem(ItemStack module, PipeTileEntity tile, ItemStack stack) {
         return true;
     }
 
     @Override
-    public int getMaxInsertionAmount(ItemStack module, PipeBlockEntity tile, ItemStack stack, IItemHandler destination) {
+    public int getMaxInsertionAmount(ItemStack module, PipeTileEntity tile, ItemStack stack, IItemHandler destination) {
         return Integer.MAX_VALUE;
     }
 
     @Override
-    public int getPriority(ItemStack module, PipeBlockEntity tile) {
+    public int getPriority(ItemStack module, PipeTileEntity tile) {
         return 0;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
         return null;
     }
 
     @Override
-    public float getItemSpeedIncrease(ItemStack module, PipeBlockEntity tile) {
+    public float getItemSpeedIncrease(ItemStack module, PipeTileEntity tile) {
         return 0;
     }
 
     @Override
-    public boolean canPipeWork(ItemStack module, PipeBlockEntity tile) {
+    public boolean canPipeWork(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public List<ItemStack> getAllCraftables(ItemStack module, PipeBlockEntity tile) {
+    public List<ItemStack> getAllCraftables(ItemStack module, PipeTileEntity tile) {
         return Collections.emptyList();
     }
 
     @Override
-    public int getCraftableAmount(ItemStack module, PipeBlockEntity tile, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
+    public int getCraftableAmount(ItemStack module, PipeTileEntity tile, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
         return 0;
     }
 
     @Override
-    public ItemStack craft(ItemStack module, PipeBlockEntity tile, BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
+    public ItemStack craft(ItemStack module, PipeTileEntity tile, BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
         return stack;
     }
 
     @Override
-    public Integer getCustomNextNode(ItemStack module, PipeBlockEntity tile, List<BlockPos> nodes, int index) {
+    public Integer getCustomNextNode(ItemStack module, PipeTileEntity tile, List<BlockPos> nodes, int index) {
         return null;
     }
 
     @Override
-    public ItemFilter getItemFilter(ItemStack module, PipeBlockEntity tile) {
+    public ItemFilter getItemFilter(ItemStack module, PipeTileEntity tile) {
         return null;
     }
 }

src/main/java/de/ellpeck/prettypipes/items/PipeFrameItem.java

@@ -3,68 +3,71 @@ package de.ellpeck.prettypipes.items;
 import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.entities.PipeFrameEntity;
-import net.minecraft.core.BlockPos;
+import net.minecraft.block.BlockState;
-import net.minecraft.core.Direction;
+import net.minecraft.client.util.ITooltipFlag;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.EntityType;
-import net.minecraft.world.InteractionResult;
+import net.minecraft.entity.item.HangingEntity;
-import net.minecraft.world.entity.EntityType;
+import net.minecraft.entity.item.ItemFrameEntity;
-import net.minecraft.world.entity.decoration.HangingEntity;
+import net.minecraft.entity.item.PaintingEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.item.Item;
+import net.minecraft.item.Item;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.TooltipFlag;
+import net.minecraft.item.ItemUseContext;
-import net.minecraft.world.item.context.UseOnContext;
+import net.minecraft.nbt.CompoundTag;
-import net.minecraft.world.level.Level;
+import net.minecraft.util.ActionResultType;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.world.World;
 
 import javax.annotation.Nullable;
 import java.util.List;
 
 public class PipeFrameItem extends Item {
-
     public PipeFrameItem() {
-        super(new Properties().tab(Registry.TAB));
+        super(new Properties().group(Registry.GROUP));
     }
 
     // HangingEntityItem copypasta mostly, since it hardcodes the entities bleh
     @Override
-    public InteractionResult useOn(UseOnContext context) {
+    public ActionResultType onItemUse(ItemUseContext context) {
-        var blockpos = context.getClickedPos();
+        BlockPos blockpos = context.getPos();
-        var direction = context.getClickedFace();
+        Direction direction = context.getFace();
-        var blockpos1 = blockpos.relative(direction);
+        BlockPos blockpos1 = blockpos.offset(direction);
-        var playerentity = context.getPlayer();
+        PlayerEntity playerentity = context.getPlayer();
-        var itemstack = context.getItemInHand();
+        ItemStack itemstack = context.getItem();
         if (playerentity != null && !this.canPlace(playerentity, direction, itemstack, blockpos1)) {
-            return InteractionResult.FAIL;
+            return ActionResultType.FAIL;
         } else {
-            var world = context.getLevel();
+            World world = context.getWorld();
             HangingEntity hangingentity = new PipeFrameEntity(Registry.pipeFrameEntity, world, blockpos1, direction);
 
-            var compoundTag = itemstack.getTag();
+            CompoundTag CompoundTag = itemstack.getTag();
-            if (compoundTag != null) {
+            if (CompoundTag != null) {
-                EntityType.updateCustomEntityTag(world, playerentity, hangingentity, compoundTag);
+                EntityType.applyItemNBT(world, playerentity, hangingentity, CompoundTag);
             }
 
-            if (hangingentity.survives()) {
+            if (hangingentity.onValidSurface()) {
-                if (!world.isClientSide) {
+                if (!world.isRemote) {
-                    hangingentity.playPlacementSound();
+                    hangingentity.playPlaceSound();
-                    world.addFreshEntity(hangingentity);
+                    world.addEntity(hangingentity);
                 }
 
                 itemstack.shrink(1);
-                return InteractionResult.SUCCESS;
+                return ActionResultType.SUCCESS;
             } else {
-                return InteractionResult.CONSUME;
+                return ActionResultType.CONSUME;
             }
         }
     }
 
-    protected boolean canPlace(Player playerIn, Direction directionIn, ItemStack itemStackIn, BlockPos posIn) {
+    protected boolean canPlace(PlayerEntity playerIn, Direction directionIn, ItemStack itemStackIn, BlockPos posIn) {
-        return !directionIn.getAxis().isVertical() && playerIn.mayUseItemAt(posIn, directionIn, itemStackIn) && PipeFrameEntity.canPlace(playerIn.level, posIn, directionIn);
+        return !directionIn.getAxis().isVertical() && playerIn.canPlayerEdit(posIn, directionIn, itemStackIn) && PipeFrameEntity.canPlace(playerIn.world, posIn, directionIn);
     }
 
     @Override
-    public void appendHoverText(ItemStack stack, @Nullable Level worldIn, List<Component> tooltip, TooltipFlag flagIn) {
+    public void addInformation(ItemStack stack, @Nullable World worldIn, List<ITextComponent> tooltip, ITooltipFlag flagIn) {
-        super.appendHoverText(stack, worldIn, tooltip, flagIn);
+        super.addInformation(stack, worldIn, tooltip, flagIn);
         Utility.addTooltip(this.getRegistryName().getPath(), tooltip);
     }
 }

src/main/java/de/ellpeck/prettypipes/items/WrenchItem.java

@@ -4,45 +4,48 @@ import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.pipe.ConnectionType;
 import de.ellpeck.prettypipes.pipe.PipeBlock;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
-import net.minecraft.network.chat.Component;
+import net.minecraft.block.Block;
-import net.minecraft.sounds.SoundEvents;
+import net.minecraft.block.BlockState;
-import net.minecraft.sounds.SoundSource;
+import net.minecraft.client.util.ITooltipFlag;
-import net.minecraft.world.InteractionResult;
+import net.minecraft.enchantment.Enchantment;
-import net.minecraft.world.item.BlockItem;
+import net.minecraft.enchantment.Enchantments;
-import net.minecraft.world.item.Item;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.item.ItemStack;
+import net.minecraft.item.*;
-import net.minecraft.world.item.TooltipFlag;
+import net.minecraft.state.EnumProperty;
-import net.minecraft.world.item.context.BlockPlaceContext;
+import net.minecraft.util.ActionResultType;
-import net.minecraft.world.item.context.UseOnContext;
+import net.minecraft.util.Direction;
-import net.minecraft.world.item.enchantment.Enchantment;
+import net.minecraft.util.SoundCategory;
-import net.minecraft.world.item.enchantment.Enchantments;
+import net.minecraft.util.SoundEvents;
-import net.minecraft.world.level.Level;
+import net.minecraft.util.math.AxisAlignedBB;
-import net.minecraft.world.level.block.Block;
+import net.minecraft.util.math.BlockPos;
-import net.minecraft.world.level.block.EntityBlock;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.world.World;
 
 import java.util.List;
+import java.util.Map;
 
 public class WrenchItem extends Item {
 
     public WrenchItem() {
-        super(new Item.Properties().stacksTo(1).tab(Registry.TAB));
+        super(new Item.Properties().maxStackSize(1).group(Registry.GROUP));
     }
 
     @Override
-    public InteractionResult useOn(UseOnContext context) {
+    public ActionResultType onItemUse(ItemUseContext context) {
-        var world = context.getLevel();
+        World world = context.getWorld();
-        var pos = context.getClickedPos();
+        BlockPos pos = context.getPos();
-        var player = context.getPlayer();
+        PlayerEntity player = context.getPlayer();
-        var state = world.getBlockState(pos);
+        BlockState state = world.getBlockState(pos);
         if (!(state.getBlock() instanceof PipeBlock))
-            return InteractionResult.PASS;
+            return ActionResultType.PASS;
-        var tile = Utility.getBlockEntity(PipeBlockEntity.class, world, pos);
+        PipeTileEntity tile = Utility.getBlockEntity(PipeTileEntity.class, world, pos);
         if (tile == null)
-            return InteractionResult.FAIL;
+            return ActionResultType.FAIL;
 
-        if (player.isCrouching()) {
+        if (player.isSneaking()) {
-            if (!world.isClientSide) {
+            if (!world.isRemote) {
                 if (tile.cover != null) {
                     // remove the cover
                     tile.removeCover(player, context.getHand());
@@ -50,64 +53,64 @@ public class WrenchItem extends Item {
                 } else {
                     // remove the pipe
                     PipeBlock.dropItems(world, pos, player);
-                    Block.dropResources(state, world, pos, tile, null, ItemStack.EMPTY);
+                    Block.spawnDrops(state, world, pos, tile, null, ItemStack.EMPTY);
                     world.removeBlock(pos, false);
                 }
-                world.playSound(null, pos, SoundEvents.ITEM_FRAME_REMOVE_ITEM, SoundSource.PLAYERS, 1, 1);
+                world.playSound(null, pos, SoundEvents.ENTITY_ITEM_FRAME_REMOVE_ITEM, SoundCategory.PLAYERS, 1, 1);
             }
-            return InteractionResult.sidedSuccess(world.isClientSide);
+            return ActionResultType.func_233537_a_(world.isRemote);
         }
 
         // placing covers
         if (tile.cover == null) {
-            var offhand = player.getOffhandItem();
+            ItemStack offhand = player.getHeldItemOffhand();
             if (offhand.getItem() instanceof BlockItem) {
-                if (!world.isClientSide) {
+                if (!world.isRemote) {
-                    var blockContext = new BlockPlaceContext(context);
+                    BlockItemUseContext blockContext = new BlockItemUseContext(context);
-                    var block = ((BlockItem) offhand.getItem()).getBlock();
+                    Block block = ((BlockItem) offhand.getItem()).getBlock();
-                    var cover = block.getStateForPlacement(blockContext);
+                    BlockState cover = block.getStateForPlacement(blockContext);
-                    if (cover != null && !(block instanceof EntityBlock)) {
+                    if (cover != null && !block.hasTileEntity(cover)) {
                         tile.cover = cover;
                         Utility.sendBlockEntityToClients(tile);
                         offhand.shrink(1);
-                        world.playSound(null, pos, SoundEvents.ITEM_FRAME_ADD_ITEM, SoundSource.PLAYERS, 1, 1);
+                        world.playSound(null, pos, SoundEvents.ENTITY_ITEM_FRAME_ADD_ITEM, SoundCategory.PLAYERS, 1, 1);
                     }
                 }
-                return InteractionResult.sidedSuccess(world.isClientSide);
+                return ActionResultType.func_233537_a_(world.isRemote);
             }
         }
 
         // disabling directions
-        for (var entry : PipeBlock.DIR_SHAPES.entrySet()) {
+        for (Map.Entry<Direction, VoxelShape> entry : PipeBlock.DIR_SHAPES.entrySet()) {
-            var box = entry.getValue().bounds().move(pos).inflate(0.001F);
+            AxisAlignedBB box = entry.getValue().getBoundingBox().offset(pos).grow(0.001F);
-            if (!box.contains(context.getClickLocation()))
+            if (!box.contains(context.getHitVec()))
                 continue;
-            var prop = PipeBlock.DIRECTIONS.get(entry.getKey());
+            EnumProperty<ConnectionType> prop = PipeBlock.DIRECTIONS.get(entry.getKey());
-            var curr = state.getValue(prop);
+            ConnectionType curr = state.get(prop);
             if (curr == ConnectionType.DISCONNECTED)
                 continue;
 
-            if (!world.isClientSide) {
+            if (!world.isRemote) {
-                var newType = curr == ConnectionType.BLOCKED ? ConnectionType.CONNECTED : ConnectionType.BLOCKED;
+                ConnectionType newType = curr == ConnectionType.BLOCKED ? ConnectionType.CONNECTED : ConnectionType.BLOCKED;
-                var otherPos = pos.relative(entry.getKey());
+                BlockPos otherPos = pos.offset(entry.getKey());
-                var otherState = world.getBlockState(otherPos);
+                BlockState otherState = world.getBlockState(otherPos);
                 if (otherState.getBlock() instanceof PipeBlock) {
-                    otherState = otherState.setValue(PipeBlock.DIRECTIONS.get(entry.getKey().getOpposite()), newType);
+                    otherState = otherState.with(PipeBlock.DIRECTIONS.get(entry.getKey().getOpposite()), newType);
-                    world.setBlockAndUpdate(otherPos, otherState);
+                    world.setBlockState(otherPos, otherState);
                     PipeBlock.onStateChanged(world, otherPos, otherState);
                 }
-                var newState = state.setValue(prop, newType);
+                BlockState newState = state.with(prop, newType);
-                world.setBlockAndUpdate(pos, newState);
+                world.setBlockState(pos, newState);
                 PipeBlock.onStateChanged(world, pos, newState);
-                world.playSound(null, pos, SoundEvents.ITEM_FRAME_ROTATE_ITEM, SoundSource.PLAYERS, 1, 1);
+                world.playSound(null, pos, SoundEvents.ENTITY_ITEM_FRAME_ROTATE_ITEM, SoundCategory.PLAYERS, 1, 1);
             }
-            return InteractionResult.sidedSuccess(world.isClientSide);
+            return ActionResultType.func_233537_a_(world.isRemote);
         }
-        return InteractionResult.PASS;
+        return ActionResultType.PASS;
     }
 
     @Override
-    public void appendHoverText(ItemStack stack, Level worldIn, List<Component> tooltip, TooltipFlag flagIn) {
+    public void addInformation(ItemStack stack, World worldIn, List<ITextComponent> tooltip, ITooltipFlag flagIn) {
         Utility.addTooltip(this.getRegistryName().getPath(), tooltip);
     }
 

src/main/java/de/ellpeck/prettypipes/misc/EquatableItemStack.java

@@ -5,11 +5,21 @@ import net.minecraft.world.item.ItemStack;
 import java.util.Arrays;
 import java.util.Objects;
 
-public record EquatableItemStack(ItemStack stack, ItemEquality... equalityTypes) {
+public class EquatableItemStack {
+
+    public final ItemStack stack;
+    public final ItemEquality[] equalityTypes;
+
+    public EquatableItemStack(ItemStack stack, ItemEquality... equalityTypes) {
+        this.stack = stack;
+        this.equalityTypes = equalityTypes;
+    }
 
     public boolean equals(Object o) {
-        if (o instanceof EquatableItemStack other)
+        if (o instanceof EquatableItemStack) {
+            EquatableItemStack other = (EquatableItemStack) o;
             return Arrays.equals(this.equalityTypes, other.equalityTypes) && ItemEquality.compareItems(this.stack, other.stack, this.equalityTypes);
+        }
         return false;
     }
 

src/main/java/de/ellpeck/prettypipes/misc/Events.java

@@ -3,7 +3,7 @@ package de.ellpeck.prettypipes.misc;
 import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.network.PipeNetwork;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.level.Level;
+import net.minecraft.world.World;
 import net.minecraftforge.event.AttachCapabilitiesEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
 import net.minecraftforge.fml.common.Mod;
@@ -12,7 +12,7 @@ import net.minecraftforge.fml.common.Mod;
 public final class Events {
 
     @SubscribeEvent
-    public static void onWorldCaps(AttachCapabilitiesEvent<Level> event) {
+    public static void onWorldCaps(AttachCapabilitiesEvent<World> event) {
         event.addCapability(new ResourceLocation(PrettyPipes.ID, "network"), new PipeNetwork(event.getObject()));
     }
 }

src/main/java/de/ellpeck/prettypipes/misc/FilterSlot.java

@@ -1,11 +1,11 @@
 package de.ellpeck.prettypipes.misc;
 
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.inventory.container.Container;
+import net.minecraft.inventory.container.Slot;
 import net.minecraft.world.item.ItemStack;
 import net.minecraftforge.items.IItemHandler;
 import net.minecraftforge.items.SlotItemHandler;
-import org.jetbrains.annotations.NotNull;
 
 public class FilterSlot extends SlotItemHandler {
 
@@ -16,9 +16,9 @@ public class FilterSlot extends SlotItemHandler {
         this.onlyOneItem = onlyOneItem;
     }
 
-    public static boolean checkFilter(AbstractContainerMenu container, int slotId, Player player) {
+    public static boolean checkFilter(Container container, int slotId, PlayerEntity player) {
-        if (slotId >= 0 && slotId < container.slots.size()) {
+        if (slotId >= 0 && slotId < container.inventorySlots.size()) {
-            var slot = container.getSlot(slotId);
+            Slot slot = container.getSlot(slotId);
             if (slot instanceof FilterSlot) {
                 ((FilterSlot) slot).slotClick(player);
                 return true;
@@ -27,33 +27,32 @@ public class FilterSlot extends SlotItemHandler {
         return false;
     }
 
-    private void slotClick(Player player) {
+    private void slotClick(PlayerEntity player) {
-        var heldStack = player.inventoryMenu.getCarried();
+        ItemStack heldStack = player.inventory.getItemStack();
-        var stackInSlot = this.getItem();
+        ItemStack stackInSlot = this.getStack();
 
         if (!stackInSlot.isEmpty() && heldStack.isEmpty()) {
-            this.safeInsert(ItemStack.EMPTY);
+            this.putStack(ItemStack.EMPTY);
         } else if (!heldStack.isEmpty()) {
-            var s = heldStack.copy();
+            ItemStack s = heldStack.copy();
             if (this.onlyOneItem)
                 s.setCount(1);
-            this.safeInsert(s);
+            this.putStack(s);
         }
     }
 
     @Override
-    public boolean mayPlace(@NotNull ItemStack stack) {
+    public boolean isItemValid(ItemStack stack) {
         return false;
     }
 
     @Override
-    public ItemStack safeInsert(ItemStack stack) {
+    public void putStack(ItemStack stack) {
-        return super.safeInsert(stack.copy());
+        super.putStack(stack.copy());
     }
 
     @Override
-    public boolean mayPickup(Player playerIn) {
+    public boolean canTakeStack(PlayerEntity playerIn) {
         return false;
     }
-
 }

src/main/java/de/ellpeck/prettypipes/misc/ItemFilter.java

@@ -3,19 +3,18 @@ package de.ellpeck.prettypipes.misc;
 import com.mojang.blaze3d.vertex.PoseStack;
 import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.packets.PacketButton;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.modules.modifier.FilterModifierModuleItem;
 import net.minecraft.ChatFormatting;
-import net.minecraft.client.gui.components.AbstractWidget;
 import net.minecraft.client.gui.components.Button;
+import net.minecraft.client.gui.components.Widget;
 import net.minecraft.client.gui.screens.Screen;
-import net.minecraft.core.Direction;
-import net.minecraft.nbt.CompoundTag;
 import net.minecraft.network.chat.TranslatableComponent;
 import net.minecraft.world.inventory.Slot;
 import net.minecraft.world.item.ItemStack;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
+import net.minecraftforge.items.IItemHandler;
 import net.minecraftforge.items.ItemHandlerHelper;
 import net.minecraftforge.items.ItemStackHandler;
 
@@ -26,14 +25,14 @@ import java.util.function.Supplier;
 public class ItemFilter extends ItemStackHandler {
 
     private final ItemStack stack;
-    private final PipeBlockEntity pipe;
+    private final PipeTileEntity pipe;
     public boolean isWhitelist;
 
     public boolean canPopulateFromInventories;
     public boolean canModifyWhitelist = true;
     private boolean modified;
 
-    public ItemFilter(int size, ItemStack stack, PipeBlockEntity pipe) {
+    public ItemFilter(int size, ItemStack stack, PipeTileEntity pipe) {
         super(size);
         this.stack = stack;
         this.pipe = pipe;
@@ -43,23 +42,23 @@ public class ItemFilter extends ItemStackHandler {
 
     public List<Slot> getSlots(int x, int y) {
         List<Slot> slots = new ArrayList<>();
-        for (var i = 0; i < this.getSlots(); i++)
+        for (int i = 0; i < this.getSlots(); i++)
             slots.add(new FilterSlot(this, i, x + i % 9 * 18, y + i / 9 * 18, true));
         return slots;
     }
 
     @OnlyIn(Dist.CLIENT)
-    public List<AbstractWidget> getButtons(Screen gui, int x, int y) {
+    public List<Widget> getButtons(Screen gui, int x, int y) {
-        List<AbstractWidget> buttons = new ArrayList<>();
+        List<Widget> buttons = new ArrayList<>();
         if (this.canModifyWhitelist) {
-            var whitelistText = (Supplier<TranslatableComponent>) () -> new TranslatableComponent("info." + PrettyPipes.ID + "." + (this.isWhitelist ? "whitelist" : "blacklist"));
+            Supplier<TranslatableComponent> whitelistText = () -> new TranslatableComponent("info." + PrettyPipes.ID + "." + (this.isWhitelist ? "whitelist" : "blacklist"));
             buttons.add(new Button(x, y, 70, 20, whitelistText.get(), button -> {
-                PacketButton.sendAndExecute(this.pipe.getBlockPos(), PacketButton.ButtonResult.FILTER_CHANGE, 0);
+                PacketButton.sendAndExecute(this.pipe.getPos(), PacketButton.ButtonResult.FILTER_CHANGE, 0);
                 button.setMessage(whitelistText.get());
             }));
         }
         if (this.canPopulateFromInventories) {
-            buttons.add(new Button(x + 72, y, 70, 20, new TranslatableComponent("info." + PrettyPipes.ID + ".populate"), button -> PacketButton.sendAndExecute(this.pipe.getBlockPos(), PacketButton.ButtonResult.FILTER_CHANGE, 1)) {
+            buttons.add(new Button(x + 72, y, 70, 20, new TranslatableComponent("info." + PrettyPipes.ID + ".populate"), button -> PacketButton.sendAndExecute(this.pipe.getPos(), PacketButton.ButtonResult.FILTER_CHANGE, 1)) {
                 @Override
                 public void renderToolTip(PoseStack matrix, int x, int y) {
                     gui.renderTooltip(matrix, new TranslatableComponent("info." + PrettyPipes.ID + ".populate.description").withStyle(ChatFormatting.GRAY), x, y);
@@ -76,19 +75,19 @@ public class ItemFilter extends ItemStackHandler {
             this.save();
         } else if (id == 1 && this.canPopulateFromInventories) {
             // populate filter from inventories
-            var filters = this.pipe.getFilters();
+            List<ItemFilter> filters = this.pipe.getFilters();
-            for (var direction : Direction.values()) {
+            for (Direction direction : Direction.values()) {
-                var handler = this.pipe.getItemHandler(direction);
+                IItemHandler handler = this.pipe.getItemHandler(direction);
                 if (handler == null)
                     continue;
-                for (var i = 0; i < handler.getSlots(); i++) {
+                for (int i = 0; i < handler.getSlots(); i++) {
-                    var stack = handler.getStackInSlot(i);
+                    ItemStack stack = handler.getStackInSlot(i);
                     if (stack.isEmpty() || this.isFiltered(stack))
                         continue;
-                    var copy = stack.copy();
+                    ItemStack copy = stack.copy();
                     copy.setCount(1);
                     // try inserting into ourselves and any filter increase modifiers
-                    for (var filter : filters) {
+                    for (ItemFilter filter : filters) {
                         if (ItemHandlerHelper.insertItem(filter, copy, false).isEmpty()) {
                             filter.save();
                             break;
@@ -104,11 +103,11 @@ public class ItemFilter extends ItemStackHandler {
     }
 
     private boolean isFiltered(ItemStack stack) {
-        var types = getEqualityTypes(this.pipe);
+        ItemEquality[] types = getEqualityTypes(this.pipe);
         // also check if any filter increase modules have the item we need
         for (ItemStackHandler handler : this.pipe.getFilters()) {
-            for (var i = 0; i < handler.getSlots(); i++) {
+            for (int i = 0; i < handler.getSlots(); i++) {
-                var filter = handler.getStackInSlot(i);
+                ItemStack filter = handler.getStackInSlot(i);
                 if (filter.isEmpty())
                     continue;
                 if (ItemEquality.compareItems(stack, filter, types))
@@ -127,7 +126,7 @@ public class ItemFilter extends ItemStackHandler {
 
     @Override
     public CompoundTag serializeNBT() {
-        var nbt = super.serializeNBT();
+        CompoundTag nbt = super.serializeNBT();
         if (this.canModifyWhitelist)
             nbt.putBoolean("whitelist", this.isWhitelist);
         return nbt;
@@ -145,7 +144,7 @@ public class ItemFilter extends ItemStackHandler {
         this.modified = true;
     }
 
-    public static ItemEquality[] getEqualityTypes(PipeBlockEntity pipe) {
+    public static ItemEquality[] getEqualityTypes(PipeTileEntity pipe) {
         return pipe.streamModules()
                 .filter(m -> m.getRight() instanceof FilterModifierModuleItem)
                 .map(m -> ((FilterModifierModuleItem) m.getRight()).getEqualityType(m.getLeft()))
@@ -153,7 +152,6 @@ public class ItemFilter extends ItemStackHandler {
     }
 
     public interface IFilteredContainer {
-
         ItemFilter getFilter();
     }
 }

src/main/java/de/ellpeck/prettypipes/misc/ItemTerminalWidget.java

@@ -1,17 +1,26 @@
 package de.ellpeck.prettypipes.misc;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.systems.RenderSystem;
-import com.mojang.blaze3d.vertex.PoseStack;
+import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.terminal.containers.ItemTerminalGui;
-import net.minecraft.ChatFormatting;
+import net.minecraft.client.Minecraft;
-import net.minecraft.client.gui.components.AbstractWidget;
+import net.minecraft.client.gui.FontRenderer;
-import net.minecraft.client.gui.narration.NarrationElementOutput;
+import net.minecraft.client.gui.screen.inventory.ContainerScreen;
-import net.minecraft.network.chat.TextComponent;
+import net.minecraft.client.gui.widget.Widget;
+import net.minecraft.client.renderer.ItemRenderer;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.StringTextComponent;
+import net.minecraft.util.text.TextComponent;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraftforge.fml.client.gui.GuiUtils;
+import org.apache.commons.lang3.tuple.Pair;
 
-import java.util.Optional;
+import java.util.List;
 
-public class ItemTerminalWidget extends AbstractWidget {
+public class ItemTerminalWidget extends Widget {
 
     private final ItemTerminalGui screen;
     public final int gridX;
@@ -21,7 +30,7 @@ public class ItemTerminalWidget extends AbstractWidget {
     public boolean craftable;
 
     public ItemTerminalWidget(int xIn, int yIn, int gridX, int gridY, ItemTerminalGui screen) {
-        super(xIn, yIn, 16, 16, new TextComponent(""));
+        super(xIn, yIn, 16, 16, new StringTextComponent(""));
         this.gridX = gridX;
         this.gridY = gridY;
         this.screen = screen;
@@ -35,25 +44,25 @@ public class ItemTerminalWidget extends AbstractWidget {
     }
 
     @Override
-    public void renderButton(PoseStack matrix, int mouseX, int mouseY, float partialTicks) {
+    public void renderButton(MatrixStack matrix, int mouseX, int mouseY, float partialTicks) {
-        var mc = this.screen.getMinecraft();
+        Minecraft mc = this.screen.getMinecraft();
-        var renderer = mc.getItemRenderer();
+        ItemRenderer renderer = mc.getItemRenderer();
         this.setBlitOffset(100);
-        renderer.blitOffset = 100;
+        renderer.zLevel = 100;
         if (this.selected)
             fill(matrix, this.x, this.y, this.x + 16, this.y + 16, -2130706433);
         RenderSystem.enableDepthTest();
-        renderer.renderGuiItem(this.stack, this.x, this.y);
+        renderer.renderItemAndEffectIntoGUI(mc.player, this.stack, this.x, this.y);
-        var amount = !this.craftable ? this.stack.getCount() : 0;
+        int amount = !this.craftable ? this.stack.getCount() : 0;
-        var amountStrg = this.stack.getCount() >= 1000 ? amount / 1000 + "k" : String.valueOf(amount);
+        String amountStrg = this.stack.getCount() >= 1000 ? amount / 1000 + "k" : String.valueOf(amount);
-        matrix.pushPose();
+        RenderSystem.pushMatrix();
-        matrix.scale(0.8F, 0.8F, 1);
+        RenderSystem.scalef(0.8F, 0.8F, 1);
-        renderer.renderGuiItemDecorations(mc.font, this.stack, (int) (this.x / 0.8F) + 4, (int) (this.y / 0.8F) + 4, amountStrg);
+        renderer.renderItemOverlayIntoGUI(mc.fontRenderer, this.stack, (int) (this.x / 0.8F) + 4, (int) (this.y / 0.8F) + 4, amountStrg);
-        matrix.popPose();
+        RenderSystem.popMatrix();
-        renderer.blitOffset = 0;
+        renderer.zLevel = 0;
         this.setBlitOffset(0);
 
-        if (this.isHoveredOrFocused()) {
+        if (this.isHovered()) {
             RenderSystem.disableDepthTest();
             RenderSystem.colorMask(true, true, true, false);
             this.fillGradient(matrix, this.x, this.y, this.x + 16, this.y + 16, -2130706433, -2130706433);
@@ -63,21 +72,18 @@ public class ItemTerminalWidget extends AbstractWidget {
     }
 
     @Override
-    public void renderToolTip(PoseStack matrix, int mouseX, int mouseY) {
+    public void renderToolTip(MatrixStack matrix, int mouseX, int mouseY) {
-        if (this.visible && this.isHoveredOrFocused()) {
+        if (this.visible && this.isHovered()) {
-            var tooltip = this.screen.getTooltipFromItem(this.stack);
+            GuiUtils.preItemToolTip(this.stack);
+            List<ITextComponent> tooltip = this.screen.getTooltipFromItem(this.stack);
             if (this.stack.getCount() >= 1000) {
-                var comp = tooltip.get(0);
+                ITextComponent comp = tooltip.get(0);
-                if (comp instanceof TextComponent text) {
+                if (comp instanceof TextComponent) {
-                    tooltip.set(0, text.append(new TextComponent(" (" + this.stack.getCount() + ')').withStyle(ChatFormatting.BOLD)));
+                    tooltip.set(0, ((TextComponent) comp).append(new StringTextComponent(" (" + this.stack.getCount() + ')').mergeStyle(TextFormatting.BOLD)));
                 }
             }
-            this.screen.renderTooltip(matrix, tooltip, Optional.empty(), mouseX, mouseY);
+            this.screen.func_243308_b(matrix, tooltip, mouseX, mouseY);
+            GuiUtils.postItemToolTip();
         }
     }
-
-    @Override
-    public void updateNarration(NarrationElementOutput output) {
-        this.defaultButtonNarrationText(output);
-    }
 }

src/main/java/de/ellpeck/prettypipes/misc/PlayerPrefs.java

@@ -4,11 +4,9 @@ import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import de.ellpeck.prettypipes.PrettyPipes;
 import net.minecraft.client.Minecraft;
+import net.minecraft.entity.player.PlayerEntity;
 
-import java.io.File;
+import java.io.*;
-import java.io.FileReader;
-import java.io.FileWriter;
-import java.io.IOException;
 
 public class PlayerPrefs {
 
@@ -20,10 +18,10 @@ public class PlayerPrefs {
     public boolean syncJei = true;
 
     public void save() {
-        var file = getFile();
+        File file = getFile();
         if (file.exists())
             file.delete();
-        try (var writer = new FileWriter(file)) {
+        try (FileWriter writer = new FileWriter(file)) {
             GSON.toJson(this, writer);
         } catch (IOException e) {
             e.printStackTrace();
@@ -32,9 +30,9 @@ public class PlayerPrefs {
 
     public static PlayerPrefs get() {
         if (instance == null) {
-            var file = getFile();
+            File file = getFile();
             if (file.exists()) {
-                try (var reader = new FileReader(file)) {
+                try (FileReader reader = new FileReader(file)) {
                     instance = GSON.fromJson(reader, PlayerPrefs.class);
                     return instance;
                 } catch (IOException e) {
@@ -47,7 +45,7 @@ public class PlayerPrefs {
     }
 
     private static File getFile() {
-        var location = Minecraft.getInstance().gameDirectory;
+        File location = Minecraft.getInstance().gameDir;
         return new File(location, PrettyPipes.ID + "prefs");
     }
 }

src/main/java/de/ellpeck/prettypipes/network/NetworkEdge.java

@@ -32,9 +32,9 @@ public class NetworkEdge extends DefaultWeightedEdge implements INBTSerializable
 
     @Override
     public CompoundTag serializeNBT() {
-        var nbt = new CompoundTag();
+        CompoundTag nbt = new CompoundTag();
-        var list = new ListTag();
+        ListTag list = new ListTag();
-        for (var pos : this.pipes)
+        for (BlockPos pos : this.pipes)
             list.add(NbtUtils.writeBlockPos(pos));
         nbt.put("pipes", list);
         return nbt;
@@ -43,8 +43,8 @@ public class NetworkEdge extends DefaultWeightedEdge implements INBTSerializable
     @Override
     public void deserializeNBT(CompoundTag nbt) {
         this.pipes.clear();
-        var list = nbt.getList("pipes", Tag.TAG_COMPOUND);
+        ListTag list = nbt.getList("pipes", Tag.TAG_COMPOUND);
-        for (var i = 0; i < list.size(); i++)
+        for (int i = 0; i < list.size(); i++)
             this.pipes.add(NbtUtils.readBlockPos(list.getCompound(i)));
     }
 }

src/main/java/de/ellpeck/prettypipes/network/NetworkItem.java

@@ -26,7 +26,7 @@ public class NetworkItem {
     }
 
     public ItemStack asStack() {
-        var stack = this.item.stack().copy();
+        ItemStack stack = this.item.stack.copy();
         stack.setCount(this.amount);
         return stack;
     }

src/main/java/de/ellpeck/prettypipes/network/NetworkLocation.java

@@ -1,13 +1,13 @@
 package de.ellpeck.prettypipes.network;
 
 import de.ellpeck.prettypipes.misc.ItemEquality;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Direction;
-import net.minecraft.nbt.NbtUtils;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.world.level.Level;
+import net.minecraft.nbt.NBTUtil;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
 import net.minecraftforge.common.util.INBTSerializable;
 import net.minecraftforge.items.IItemHandler;
 
@@ -33,7 +33,7 @@ public class NetworkLocation implements INBTSerializable<CompoundTag> {
         this.deserializeNBT(nbt);
     }
 
-    public List<Integer> getStackSlots(Level world, ItemStack stack, ItemEquality... equalityTypes) {
+    public List<Integer> getStackSlots(World world, ItemStack stack, ItemEquality... equalityTypes) {
         if (this.isEmpty(world))
             return Collections.emptyList();
         return this.getItems(world).entrySet().stream()
@@ -41,7 +41,7 @@ public class NetworkLocation implements INBTSerializable<CompoundTag> {
                 .map(Map.Entry::getKey).collect(Collectors.toList());
     }
 
-    public int getItemAmount(Level world, ItemStack stack, ItemEquality... equalityTypes) {
+    public int getItemAmount(World world, ItemStack stack, ItemEquality... equalityTypes) {
         if (this.isEmpty(world))
             return 0;
         return this.getItems(world).entrySet().stream()
@@ -49,12 +49,12 @@ public class NetworkLocation implements INBTSerializable<CompoundTag> {
                 .mapToInt(kv -> kv.getValue().getCount()).sum();
     }
 
-    public Map<Integer, ItemStack> getItems(Level world) {
+    public Map<Integer, ItemStack> getItems(World world) {
         if (this.itemCache == null) {
-            var handler = this.getItemHandler(world);
+            IItemHandler handler = this.getItemHandler(world);
             if (handler != null) {
-                for (var i = 0; i < handler.getSlots(); i++) {
+                for (int i = 0; i < handler.getSlots(); i++) {
-                    var stack = handler.getStackInSlot(i);
+                    ItemStack stack = handler.getStackInSlot(i);
                     // check if the slot is accessible to us
                     if (stack.isEmpty())
                         continue;
@@ -68,40 +68,40 @@ public class NetworkLocation implements INBTSerializable<CompoundTag> {
         return this.itemCache;
     }
 
-    public boolean canExtract(Level world, int slot) {
+    public boolean canExtract(World world, int slot) {
-        var handler = this.getItemHandler(world);
+        IItemHandler handler = this.getItemHandler(world);
         return handler != null && !handler.extractItem(slot, 1, true).isEmpty();
     }
 
-    public IItemHandler getItemHandler(Level world) {
+    public IItemHandler getItemHandler(World world) {
         if (this.handlerCache == null) {
-            var network = PipeNetwork.get(world);
+            PipeNetwork network = PipeNetwork.get(world);
-            var pipe = network.getPipe(this.pipePos);
+            PipeTileEntity pipe = network.getPipe(this.pipePos);
             this.handlerCache = pipe.getItemHandler(this.direction);
         }
         return this.handlerCache;
     }
 
-    public boolean isEmpty(Level world) {
+    public boolean isEmpty(World world) {
-        var items = this.getItems(world);
+        Map<Integer, ItemStack> items = this.getItems(world);
         return items == null || items.isEmpty();
     }
 
     public BlockPos getPos() {
-        return this.pipePos.relative(this.direction);
+        return this.pipePos.offset(this.direction);
     }
 
     @Override
     public CompoundTag serializeNBT() {
-        var nbt = new CompoundTag();
+        CompoundTag nbt = new CompoundTag();
-        nbt.put("pipe_pos", NbtUtils.writeBlockPos(this.pipePos));
+        nbt.put("pipe_pos", NBTUtil.writeBlockPos(this.pipePos));
-        nbt.putInt("direction", this.direction.ordinal());
+        nbt.putInt("direction", this.direction.getIndex());
         return nbt;
     }
 
     @Override
     public void deserializeNBT(CompoundTag nbt) {
-        this.pipePos = NbtUtils.readBlockPos(nbt.getCompound("pipe_pos"));
+        this.pipePos = NBTUtil.readBlockPos(nbt.getCompound("pipe_pos"));
-        this.direction = Direction.values()[(nbt.getInt("direction"))];
+        this.direction = Direction.byIndex(nbt.getInt("direction"));
     }
 }

src/main/java/de/ellpeck/prettypipes/network/NetworkLock.java

@@ -1,7 +1,8 @@
 package de.ellpeck.prettypipes.network;
 
-import net.minecraft.nbt.CompoundTag;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
 import net.minecraftforge.common.util.INBTSerializable;
 
 import java.util.Objects;
@@ -26,24 +27,26 @@ public class NetworkLock implements INBTSerializable<CompoundTag> {
 
     @Override
     public CompoundTag serializeNBT() {
-        var nbt = new CompoundTag();
+        CompoundTag nbt = new CompoundTag();
-        nbt.putUUID("id", this.lockId);
+        nbt.putUniqueId("id", this.lockId);
         nbt.put("location", this.location.serializeNBT());
-        nbt.put("stack", this.stack.save(new CompoundTag()));
+        nbt.put("stack", this.stack.write(new CompoundTag()));
         return nbt;
     }
 
     @Override
     public void deserializeNBT(CompoundTag nbt) {
-        this.lockId = nbt.getUUID("id");
+        this.lockId = nbt.getUniqueId("id");
         this.location = new NetworkLocation(nbt.getCompound("location"));
-        this.stack = ItemStack.of(nbt.getCompound("stack"));
+        this.stack = ItemStack.read(nbt.getCompound("stack"));
     }
 
     @Override
     public boolean equals(Object o) {
-        if (o instanceof NetworkLock that)
+        if (o instanceof NetworkLock) {
+            NetworkLock that = (NetworkLock) o;
             return this.lockId.equals(that.lockId);
+        }
         return false;
     }
 

src/main/java/de/ellpeck/prettypipes/network/PipeItem.java

@@ -1,29 +1,33 @@
 package de.ellpeck.prettypipes.network;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
 import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.Utility;
+import de.ellpeck.prettypipes.pipe.IPipeConnectable;
 import de.ellpeck.prettypipes.pipe.IPipeItem;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.IRenderTypeBuffer;
-import net.minecraft.client.renderer.block.model.ItemTransforms;
+import net.minecraft.client.renderer.model.ItemCameraTransforms;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.item.ItemEntity;
+import net.minecraft.item.BlockItem;
+import net.minecraft.item.Item;
+import net.minecraft.world.item.ItemStack;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.ListTag;
-import net.minecraft.nbt.NbtUtils;
+import net.minecraft.nbt.NBTUtil;
-import net.minecraft.nbt.Tag;
+import net.minecraft.util.Direction;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.util.Mth;
+import net.minecraft.util.math.BlockPos;
-import net.minecraft.world.entity.item.ItemEntity;
+import net.minecraft.util.math.MathHelper;
-import net.minecraft.world.item.BlockItem;
+import net.minecraft.util.math.vector.Vector3d;
-import net.minecraft.world.item.Item;
+import net.minecraft.world.World;
-import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.Level;
-import net.minecraft.world.phys.Vec3;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
+import net.minecraftforge.common.util.Constants;
+import net.minecraftforge.items.IItemHandler;
 import net.minecraftforge.items.ItemHandlerHelper;
+import org.jgrapht.Graph;
 import org.jgrapht.GraphPath;
 
 import java.util.ArrayList;
@@ -84,35 +88,35 @@ public class PipeItem implements IPipeItem {
 
         // initialize position if new
         if (this.x == 0 && this.y == 0 && this.z == 0) {
-            this.x = Mth.lerp(0.5F, startInventory.getX(), this.currGoalPos.getX()) + 0.5F;
+            this.x = MathHelper.lerp(0.5F, startInventory.getX(), this.currGoalPos.getX()) + 0.5F;
-            this.y = Mth.lerp(0.5F, startInventory.getY(), this.currGoalPos.getY()) + 0.5F;
+            this.y = MathHelper.lerp(0.5F, startInventory.getY(), this.currGoalPos.getY()) + 0.5F;
-            this.z = Mth.lerp(0.5F, startInventory.getZ(), this.currGoalPos.getZ()) + 0.5F;
+            this.z = MathHelper.lerp(0.5F, startInventory.getZ(), this.currGoalPos.getZ()) + 0.5F;
         }
     }
 
     @Override
-    public void updateInPipe(PipeBlockEntity currPipe) {
+    public void updateInPipe(PipeTileEntity currPipe) {
         // this prevents pipes being updated after one another
         // causing an item that just switched to tick twice
-        var worldTick = currPipe.getLevel().getGameTime();
+        long worldTick = currPipe.getWorld().getGameTime();
         if (this.lastWorldTick == worldTick)
             return;
         this.lastWorldTick = worldTick;
 
-        var motionLeft = this.speed;
+        float motionLeft = this.speed;
         while (motionLeft > 0) {
-            var currSpeed = Math.min(0.25F, motionLeft);
+            float currSpeed = Math.min(0.25F, motionLeft);
             motionLeft -= currSpeed;
 
-            var myPos = new BlockPos(this.x, this.y, this.z);
+            BlockPos myPos = new BlockPos(this.x, this.y, this.z);
-            if (!myPos.equals(currPipe.getBlockPos()) && (currPipe.getBlockPos().equals(this.getDestPipe()) || !myPos.equals(this.startInventory))) {
+            if (!myPos.equals(currPipe.getPos()) && (currPipe.getPos().equals(this.getDestPipe()) || !myPos.equals(this.startInventory))) {
                 // we're done with the current pipe, so switch to the next one
                 currPipe.getItems().remove(this);
-                var next = this.getNextTile(currPipe, true);
+                PipeTileEntity next = this.getNextTile(currPipe, true);
                 if (next == null) {
-                    if (!currPipe.getLevel().isClientSide) {
+                    if (!currPipe.getWorld().isRemote) {
-                        if (currPipe.getBlockPos().equals(this.getDestPipe())) {
+                        if (currPipe.getPos().equals(this.getDestPipe())) {
-                            // ...or store in our destination container if we reached our destination
+                            // ..or store in our destination container if we reached our destination
                             this.stack = this.store(currPipe);
                             if (!this.stack.isEmpty())
                                 this.onPathObstructed(currPipe, true);
@@ -126,29 +130,29 @@ public class PipeItem implements IPipeItem {
                     currPipe = next;
                 }
             } else {
-                var dist = (this.currGoalPos).distSqr(this.x - 0.5F, this.y - 0.5F, this.z - 0.5F, false);
+                double dist = Vector3d.copy(this.currGoalPos).squareDistanceTo(this.x - 0.5F, this.y - 0.5F, this.z - 0.5F);
                 if (dist < currSpeed * currSpeed) {
                     // we're past the start of the pipe, so move to the center of the next pipe
                     BlockPos nextPos;
-                    var next = this.getNextTile(currPipe, false);
+                    PipeTileEntity next = this.getNextTile(currPipe, false);
                     if (next == null || next == currPipe) {
-                        if (currPipe.getBlockPos().equals(this.getDestPipe())) {
+                        if (currPipe.getPos().equals(this.getDestPipe())) {
                             nextPos = this.destInventory;
                         } else {
                             currPipe.getItems().remove(this);
-                            if (!currPipe.getLevel().isClientSide)
+                            if (!currPipe.getWorld().isRemote)
                                 this.onPathObstructed(currPipe, false);
                             return;
                         }
                     } else {
-                        nextPos = next.getBlockPos();
+                        nextPos = next.getPos();
                     }
-                    var tolerance = 0.001F;
+                    float tolerance = 0.001F;
                     if (dist >= tolerance * tolerance) {
                         // when going around corners, we want to move right up to the corner
-                        var motion = new Vec3(this.x - this.lastX, this.y - this.lastY, this.z - this.lastZ);
+                        Vector3d motion = new Vector3d(this.x - this.lastX, this.y - this.lastY, this.z - this.lastZ);
-                        var diff = new Vec3(nextPos.getX() + 0.5F - this.x, nextPos.getY() + 0.5F - this.y, nextPos.getZ() + 0.5F - this.z);
+                        Vector3d diff = new Vector3d(nextPos.getX() + 0.5F - this.x, nextPos.getY() + 0.5F - this.y, nextPos.getZ() + 0.5F - this.z);
-                        if (motion.cross(diff).length() >= tolerance) {
+                        if (motion.crossProduct(diff).length() >= tolerance) {
                             currSpeed = (float) Math.sqrt(dist);
                         } else {
                             // we're not going around a corner, so continue
@@ -165,7 +169,7 @@ public class PipeItem implements IPipeItem {
             this.lastY = this.y;
             this.lastZ = this.z;
 
-            var dist = new Vec3(this.currGoalPos.getX() + 0.5F - this.x, this.currGoalPos.getY() + 0.5F - this.y, this.currGoalPos.getZ() + 0.5F - this.z);
+            Vector3d dist = new Vector3d(this.currGoalPos.getX() + 0.5F - this.x, this.currGoalPos.getY() + 0.5F - this.y, this.currGoalPos.getZ() + 0.5F - this.z);
             dist = dist.normalize();
             this.x += dist.x * currSpeed;
             this.y += dist.y * currSpeed;
@@ -173,50 +177,50 @@ public class PipeItem implements IPipeItem {
         }
     }
 
-    protected void onPathObstructed(PipeBlockEntity currPipe, boolean tryReturn) {
+    protected void onPathObstructed(PipeTileEntity currPipe, boolean tryReturn) {
-        if (currPipe.getLevel().isClientSide)
+        if (currPipe.getWorld().isRemote)
             return;
-        var network = PipeNetwork.get(currPipe.getLevel());
+        PipeNetwork network = PipeNetwork.get(currPipe.getWorld());
         if (tryReturn) {
             // first time: we try to return to our input chest
-            if (!this.retryOnObstruction && network.routeItemToLocation(currPipe.getBlockPos(), this.destInventory, this.getStartPipe(), this.startInventory, this.stack, speed -> this)) {
+            if (!this.retryOnObstruction && network.routeItemToLocation(currPipe.getPos(), this.destInventory, this.getStartPipe(), this.startInventory, this.stack, speed -> this)) {
                 this.retryOnObstruction = true;
                 return;
             }
             // second time: we arrived at our input chest, it is full, so we try to find a different goal location
-            var remain = network.routeItem(currPipe.getBlockPos(), this.destInventory, this.stack, (stack, speed) -> this, false);
+            ItemStack remain = network.routeItem(currPipe.getPos(), this.destInventory, this.stack, (stack, speed) -> this, false);
             if (!remain.isEmpty())
-                this.drop(currPipe.getLevel(), remain.copy());
+                this.drop(currPipe.getWorld(), remain.copy());
         } else {
             // if all re-routing attempts fail, we drop
-            this.drop(currPipe.getLevel(), this.stack);
+            this.drop(currPipe.getWorld(), this.stack);
         }
     }
 
     @Override
-    public void drop(Level world, ItemStack stack) {
+    public void drop(World world, ItemStack stack) {
-        var item = new ItemEntity(world, this.x, this.y, this.z, stack.copy());
+        ItemEntity item = new ItemEntity(world, this.x, this.y, this.z, stack.copy());
-        item.level.addFreshEntity(item);
+        item.world.addEntity(item);
     }
 
-    protected ItemStack store(PipeBlockEntity currPipe) {
+    protected ItemStack store(PipeTileEntity currPipe) {
-        var dir = Utility.getDirectionFromOffset(this.destInventory, this.getDestPipe());
+        Direction dir = Utility.getDirectionFromOffset(this.destInventory, this.getDestPipe());
-        var connectable = currPipe.getPipeConnectable(dir);
+        IPipeConnectable connectable = currPipe.getPipeConnectable(dir);
         if (connectable != null)
-            return connectable.insertItem(currPipe.getBlockPos(), dir, this.stack, false);
+            return connectable.insertItem(currPipe.getPos(), dir, this.stack, false);
-        var handler = currPipe.getItemHandler(dir);
+        IItemHandler handler = currPipe.getItemHandler(dir);
         if (handler != null)
             return ItemHandlerHelper.insertItemStacked(handler, this.stack, false);
         return this.stack;
     }
 
-    protected PipeBlockEntity getNextTile(PipeBlockEntity currPipe, boolean progress) {
+    protected PipeTileEntity getNextTile(PipeTileEntity currPipe, boolean progress) {
         if (this.path.size() <= this.currentTile + 1)
             return null;
-        var pos = this.path.get(this.currentTile + 1);
+        BlockPos pos = this.path.get(this.currentTile + 1);
         if (progress)
             this.currentTile++;
-        var network = PipeNetwork.get(currPipe.getLevel());
+        PipeNetwork network = PipeNetwork.get(currPipe.getWorld());
         return network.getPipe(pos);
     }
 
@@ -241,41 +245,41 @@ public class PipeItem implements IPipeItem {
 
     @Override
     public CompoundTag serializeNBT() {
-        var nbt = new CompoundTag();
+        CompoundTag nbt = new CompoundTag();
         nbt.putString("type", this.type.toString());
         nbt.put("stack", this.stack.serializeNBT());
         nbt.putFloat("speed", this.speed);
-        nbt.put("start_inv", NbtUtils.writeBlockPos(this.startInventory));
+        nbt.put("start_inv", NBTUtil.writeBlockPos(this.startInventory));
-        nbt.put("dest_inv", NbtUtils.writeBlockPos(this.destInventory));
+        nbt.put("dest_inv", NBTUtil.writeBlockPos(this.destInventory));
-        nbt.put("curr_goal", NbtUtils.writeBlockPos(this.currGoalPos));
+        nbt.put("curr_goal", NBTUtil.writeBlockPos(this.currGoalPos));
         nbt.putBoolean("drop_on_obstruction", this.retryOnObstruction);
         nbt.putInt("tile", this.currentTile);
         nbt.putFloat("x", this.x);
         nbt.putFloat("y", this.y);
         nbt.putFloat("z", this.z);
-        var list = new ListTag();
+        ListTag list = new ListTag();
-        for (var pos : this.path)
+        for (BlockPos pos : this.path)
-            list.add(NbtUtils.writeBlockPos(pos));
+            list.add(NBTUtil.writeBlockPos(pos));
         nbt.put("path", list);
         return nbt;
     }
 
     @Override
     public void deserializeNBT(CompoundTag nbt) {
-        this.stack = ItemStack.of(nbt.getCompound("stack"));
+        this.stack = ItemStack.read(nbt.getCompound("stack"));
         this.speed = nbt.getFloat("speed");
-        this.startInventory = NbtUtils.readBlockPos(nbt.getCompound("start_inv"));
+        this.startInventory = NBTUtil.readBlockPos(nbt.getCompound("start_inv"));
-        this.destInventory = NbtUtils.readBlockPos(nbt.getCompound("dest_inv"));
+        this.destInventory = NBTUtil.readBlockPos(nbt.getCompound("dest_inv"));
-        this.currGoalPos = NbtUtils.readBlockPos(nbt.getCompound("curr_goal"));
+        this.currGoalPos = NBTUtil.readBlockPos(nbt.getCompound("curr_goal"));
         this.retryOnObstruction = nbt.getBoolean("drop_on_obstruction");
         this.currentTile = nbt.getInt("tile");
         this.x = nbt.getFloat("x");
         this.y = nbt.getFloat("y");
         this.z = nbt.getFloat("z");
         this.path.clear();
-        var list = nbt.getList("path", Tag.TAG_COMPOUND);
+        ListTag list = nbt.getList("path", Constants.NBT.TAG_COMPOUND);
-        for (var i = 0; i < list.size(); i++)
+        for (int i = 0; i < list.size(); i++)
-            this.path.add(NbtUtils.readBlockPos(list.getCompound(i)));
+            this.path.add(NBTUtil.readBlockPos(list.getCompound(i)));
     }
 
     @Override
@@ -285,40 +289,40 @@ public class PipeItem implements IPipeItem {
 
     @Override
     @OnlyIn(Dist.CLIENT)
-    public void render(PipeBlockEntity tile, PoseStack matrixStack, Random random, float partialTicks, int light, int overlay, MultiBufferSource source) {
+    public void render(PipeTileEntity tile, MatrixStack matrixStack, Random random, float partialTicks, int light, int overlay, IRenderTypeBuffer buffer) {
         matrixStack.translate(
-                Mth.lerp(partialTicks, this.lastX, this.x),
+                MathHelper.lerp(partialTicks, this.lastX, this.x),
-                Mth.lerp(partialTicks, this.lastY, this.y),
+                MathHelper.lerp(partialTicks, this.lastY, this.y),
-                Mth.lerp(partialTicks, this.lastZ, this.z));
+                MathHelper.lerp(partialTicks, this.lastZ, this.z));
 
         if (this.stack.getItem() instanceof BlockItem) {
-            var scale = 0.7F;
+            float scale = 0.7F;
             matrixStack.scale(scale, scale, scale);
             matrixStack.translate(0, -0.2F, 0);
         } else {
-            var scale = 0.45F;
+            float scale = 0.45F;
             matrixStack.scale(scale, scale, scale);
             matrixStack.translate(0, -0.1F, 0);
         }
 
-        random.setSeed(Item.getId(this.stack.getItem()) + this.stack.getDamageValue());
+        random.setSeed(Item.getIdFromItem(this.stack.getItem()) + this.stack.getDamage());
-        var amount = this.getModelCount();
+        int amount = this.getModelCount();
 
-        for (var i = 0; i < amount; i++) {
+        for (int i = 0; i < amount; i++) {
-            matrixStack.pushPose();
+            matrixStack.push();
             if (amount > 1) {
                 matrixStack.translate(
                         (random.nextFloat() * 2.0F - 1.0F) * 0.25F * 0.5F,
                         (random.nextFloat() * 2.0F - 1.0F) * 0.25F * 0.5F,
                         (random.nextFloat() * 2.0F - 1.0F) * 0.25F * 0.5F);
             }
-            Minecraft.getInstance().getItemRenderer().renderStatic(this.stack, ItemTransforms.TransformType.GROUND, light, overlay, matrixStack, source, 0);
+            Minecraft.getInstance().getItemRenderer().renderItem(this.stack, ItemCameraTransforms.TransformType.GROUND, light, overlay, matrixStack, buffer);
-            matrixStack.popPose();
+            matrixStack.pop();
         }
     }
 
     protected int getModelCount() {
-        var i = 1;
+        int i = 1;
         if (this.stack.getCount() > 48) {
             i = 5;
         } else if (this.stack.getCount() > 32) {
@@ -332,32 +336,32 @@ public class PipeItem implements IPipeItem {
     }
 
     protected static List<BlockPos> compilePath(GraphPath<BlockPos, NetworkEdge> path) {
-        var graph = path.getGraph();
+        Graph<BlockPos, NetworkEdge> graph = path.getGraph();
         List<BlockPos> ret = new ArrayList<>();
-        var nodes = path.getVertexList();
+        List<BlockPos> nodes = path.getVertexList();
         if (nodes.size() == 1) {
             // add the single pipe twice if there's only one
-            // this is a dirty hack, but it works fine so eh
+            // this is a dirty hack but it works fine so eh
-            for (var i = 0; i < 2; i++)
+            for (int i = 0; i < 2; i++)
                 ret.add(nodes.get(0));
             return ret;
         }
-        for (var i = 0; i < nodes.size() - 1; i++) {
+        for (int i = 0; i < nodes.size() - 1; i++) {
-            var first = nodes.get(i);
+            BlockPos first = nodes.get(i);
-            var second = nodes.get(i + 1);
+            BlockPos second = nodes.get(i + 1);
-            var edge = graph.getEdge(first, second);
+            NetworkEdge edge = graph.getEdge(first, second);
-            var add = (Consumer<Integer>) j -> {
+            Consumer<Integer> add = j -> {
-                var pos = edge.pipes.get(j);
+                BlockPos pos = edge.pipes.get(j);
                 if (!ret.contains(pos))
                     ret.add(pos);
             };
             // if the edge is the other way around, we need to loop through tiles
             // the other way also
             if (!graph.getEdgeSource(edge).equals(first)) {
-                for (var j = edge.pipes.size() - 1; j >= 0; j--)
+                for (int j = edge.pipes.size() - 1; j >= 0; j--)
                     add.accept(j);
             } else {
-                for (var j = 0; j < edge.pipes.size(); j++)
+                for (int j = 0; j < edge.pipes.size(); j++)
                     add.accept(j);
             }
         }

src/main/java/de/ellpeck/prettypipes/network/PipeNetwork.java

@@ -11,21 +11,29 @@ import de.ellpeck.prettypipes.packets.PacketHandler;
 import de.ellpeck.prettypipes.packets.PacketItemEnterPipe;
 import de.ellpeck.prettypipes.pipe.IPipeItem;
 import de.ellpeck.prettypipes.pipe.PipeBlock;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
+import net.minecraft.block.BlockState;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
+import net.minecraft.nbt.*;
+import net.minecraft.world.item.ItemStack;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.ListTag;
-import net.minecraft.nbt.NbtUtils;
+import net.minecraft.nbt.NBTUtil;
-import net.minecraft.nbt.Tag;
+import net.minecraft.util.Direction;
-import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.common.capabilities.ICapabilitySerializable;
+import net.minecraftforge.common.util.Constants.NBT;
 import net.minecraftforge.common.util.LazyOptional;
+import net.minecraftforge.items.IItemHandler;
 import org.apache.commons.lang3.tuple.Pair;
+import org.jgrapht.GraphPath;
 import org.jgrapht.ListenableGraph;
+import org.jgrapht.alg.interfaces.ShortestPathAlgorithm;
 import org.jgrapht.alg.shortestpath.DijkstraShortestPath;
 import org.jgrapht.event.GraphEdgeChangeEvent;
 import org.jgrapht.event.GraphListener;
@@ -48,7 +56,7 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     public final ListenableGraph<BlockPos, NetworkEdge> graph;
     private final DijkstraShortestPath<BlockPos, NetworkEdge> dijkstra;
     private final Map<BlockPos, List<BlockPos>> nodeToConnectedNodes = new HashMap<>();
-    private final Map<BlockPos, PipeBlockEntity> tileCache = new HashMap<>();
+    private final Map<BlockPos, PipeTileEntity> tileCache = new HashMap<>();
     private final ListMultimap<BlockPos, IPipeItem> pipeItems = ArrayListMultimap.create();
     private final ListMultimap<BlockPos, NetworkLock> networkLocks = ArrayListMultimap.create();
     private final Level world;
@@ -69,13 +77,13 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
 
     @Override
     public CompoundTag serializeNBT() {
-        var nbt = new CompoundTag();
+        CompoundTag nbt = new CompoundTag();
-        var nodes = new ListTag();
+        ListTag nodes = new ListTag();
-        for (var node : this.graph.vertexSet())
+        for (BlockPos node : this.graph.vertexSet())
             nodes.add(NbtUtils.writeBlockPos(node));
         nbt.put("nodes", nodes);
-        var edges = new ListTag();
+        ListTag edges = new ListTag();
-        for (var edge : this.graph.edgeSet())
+        for (NetworkEdge edge : this.graph.edgeSet())
             edges.add(edge.serializeNBT());
         nbt.put("edges", edges);
         nbt.put("items", Utility.serializeAll(this.pipeItems.values()));
@@ -89,15 +97,15 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
         this.pipeItems.clear();
         this.networkLocks.clear();
 
-        var nodes = nbt.getList("nodes", Tag.TAG_COMPOUND);
+        ListTag nodes = nbt.getList("nodes", Tag.TAG_COMPOUND);
-        for (var i = 0; i < nodes.size(); i++)
+        for (int i = 0; i < nodes.size(); i++)
-            this.graph.addVertex(NbtUtils.readBlockPos(nodes.getCompound(i)));
+            this.graph.addVertex(NBTUtil.readBlockPos(nodes.getCompound(i)));
-        var edges = nbt.getList("edges", Tag.TAG_COMPOUND);
+        ListTag edges = nbt.getList("edges", Tag.TAG_COMPOUND);
-        for (var i = 0; i < edges.size(); i++)
+        for (int i = 0; i < edges.size(); i++)
             this.addEdge(new NetworkEdge(edges.getCompound(i)));
-        for (var item : Utility.deserializeAll(nbt.getList("items", Tag.TAG_COMPOUND), IPipeItem::load))
+        for (IPipeItem item : Utility.deserializeAll(nbt.getList("items", NBT.TAG_COMPOUND), IPipeItem::load))
             this.pipeItems.put(item.getCurrentPipe(), item);
-        for (var lock : Utility.deserializeAll(nbt.getList("locks", Tag.TAG_COMPOUND), NetworkLock::new))
+        for (NetworkLock lock : Utility.deserializeAll(nbt.getList("locks", NBT.TAG_COMPOUND), NetworkLock::new))
             this.createNetworkLock(lock);
     }
 
@@ -118,12 +126,12 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     }
 
     public void onPipeChanged(BlockPos pos, BlockState state) {
-        var neighbors = this.createAllEdges(pos, state, true);
+        List<NetworkEdge> neighbors = this.createAllEdges(pos, state, true);
         // if we only have one neighbor, then there can't be any new connections
         if (neighbors.size() <= 1 && !this.isNode(pos))
             return;
-        for (var edge : neighbors) {
+        for (NetworkEdge edge : neighbors) {
-            var end = edge.getEndPipe();
+            BlockPos end = edge.getEndPipe();
             this.refreshNode(end, this.world.getBlockState(end));
         }
     }
@@ -135,24 +143,24 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     public ItemStack routeItem(BlockPos startPipePos, BlockPos startInventory, ItemStack stack, BiFunction<ItemStack, Float, IPipeItem> itemSupplier, boolean preventOversending) {
         if (!this.isNode(startPipePos))
             return stack;
-        if (!this.world.isLoaded(startPipePos))
+        if (!this.world.isBlockLoaded(startPipePos))
             return stack;
-        var startPipe = this.getPipe(startPipePos);
+        PipeTileEntity startPipe = this.getPipe(startPipePos);
         if (startPipe == null)
             return stack;
         this.startProfile("find_destination");
-        var nodes = this.getOrderedNetworkNodes(startPipePos);
+        List<BlockPos> nodes = this.getOrderedNetworkNodes(startPipePos);
-        for (var i = 0; i < nodes.size(); i++) {
+        for (int i = 0; i < nodes.size(); i++) {
-            var pipePos = nodes.get(startPipe.getNextNode(nodes, i));
+            BlockPos pipePos = nodes.get(startPipe.getNextNode(nodes, i));
-            if (!this.world.isLoaded(pipePos))
+            if (!this.world.isBlockLoaded(pipePos))
                 continue;
-            var pipe = this.getPipe(pipePos);
+            PipeTileEntity pipe = this.getPipe(pipePos);
-            var dest = pipe.getAvailableDestination(stack, false, preventOversending);
+            Pair<BlockPos, ItemStack> dest = pipe.getAvailableDestination(stack, false, preventOversending);
             if (dest == null || dest.getLeft().equals(startInventory))
                 continue;
-            var sup = (Function<Float, IPipeItem>) speed -> itemSupplier.apply(dest.getRight(), speed);
+            Function<Float, IPipeItem> sup = speed -> itemSupplier.apply(dest.getRight(), speed);
-            if (this.routeItemToLocation(startPipePos, startInventory, pipe.getBlockPos(), dest.getLeft(), dest.getRight(), sup)) {
+            if (this.routeItemToLocation(startPipePos, startInventory, pipe.getPos(), dest.getLeft(), dest.getRight(), sup)) {
-                var remain = stack.copy();
+                ItemStack remain = stack.copy();
                 remain.shrink(dest.getRight().getCount());
                 this.endProfile();
                 return remain;
@@ -165,17 +173,17 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     public boolean routeItemToLocation(BlockPos startPipePos, BlockPos startInventory, BlockPos destPipePos, BlockPos destInventory, ItemStack stack, Function<Float, IPipeItem> itemSupplier) {
         if (!this.isNode(startPipePos) || !this.isNode(destPipePos))
             return false;
-        if (!this.world.isLoaded(startPipePos) || !this.world.isLoaded(destPipePos))
+        if (!this.world.isBlockLoaded(startPipePos) || !this.world.isBlockLoaded(destPipePos))
             return false;
-        var startPipe = this.getPipe(startPipePos);
+        PipeTileEntity startPipe = this.getPipe(startPipePos);
         if (startPipe == null)
             return false;
         this.startProfile("get_path");
-        var path = this.dijkstra.getPath(startPipePos, destPipePos);
+        GraphPath<BlockPos, NetworkEdge> path = this.dijkstra.getPath(startPipePos, destPipePos);
         this.endProfile();
         if (path == null)
             return false;
-        var item = itemSupplier.apply(startPipe.getItemSpeed(stack));
+        IPipeItem item = itemSupplier.apply(startPipe.getItemSpeed(stack));
         item.setDestination(startInventory, destInventory, path);
         startPipe.addNewItem(item);
         PacketHandler.sendToAllLoaded(this.world, startPipePos, new PacketItemEnterPipe(startPipePos, item));
@@ -183,9 +191,9 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     }
 
     public ItemStack requestItem(BlockPos destPipe, BlockPos destInventory, ItemStack stack, ItemEquality... equalityTypes) {
-        var remain = stack.copy();
+        ItemStack remain = stack.copy();
         // check existing items
-        for (var location : this.getOrderedNetworkItems(destPipe)) {
+        for (NetworkLocation location : this.getOrderedNetworkItems(destPipe)) {
             remain = this.requestExistingItem(location, destPipe, destInventory, null, remain, equalityTypes);
             if (remain.isEmpty())
                 return remain;
@@ -195,10 +203,10 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     }
 
     public ItemStack requestCraftedItem(BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain, ItemEquality... equalityTypes) {
-        for (var craftable : this.getAllCraftables(destPipe)) {
+        for (Pair<BlockPos, ItemStack> craftable : this.getAllCraftables(destPipe)) {
             if (!ItemEquality.compareItems(stack, craftable.getRight(), equalityTypes))
                 continue;
-            var pipe = this.getPipe(craftable.getLeft());
+            PipeTileEntity pipe = this.getPipe(craftable.getLeft());
             if (pipe == null)
                 continue;
             stack = pipe.craft(destPipe, unavailableConsumer, stack, dependencyChain);
@@ -216,21 +224,21 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
         if (location.getPos().equals(destInventory))
             return stack;
         // make sure we don't pull any locked items
-        var amount = location.getItemAmount(this.world, stack, equalityTypes);
+        int amount = location.getItemAmount(this.world, stack, equalityTypes);
         if (amount <= 0)
             return stack;
         amount -= this.getLockedAmount(location.getPos(), stack, ignoredLock, equalityTypes);
         if (amount <= 0)
             return stack;
-        var remain = stack.copy();
+        ItemStack remain = stack.copy();
         // make sure we only extract less than or equal to the requested amount
         if (remain.getCount() < amount)
             amount = remain.getCount();
         remain.shrink(amount);
         for (int slot : location.getStackSlots(this.world, stack, equalityTypes)) {
             // try to extract from that location's inventory and send the item
-            var handler = location.getItemHandler(this.world);
+            IItemHandler handler = location.getItemHandler(this.world);
-            var extracted = handler.extractItem(slot, amount, true);
+            ItemStack extracted = handler.extractItem(slot, amount, true);
             if (this.routeItemToLocation(location.pipePos, location.getPos(), destPipe, destInventory, extracted, speed -> itemSupplier.apply(extracted, speed))) {
                 handler.extractItem(slot, extracted.getCount(), false);
                 amount -= extracted.getCount();
@@ -241,10 +249,10 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
         return remain;
     }
 
-    public PipeBlockEntity getPipe(BlockPos pos) {
+    public PipeTileEntity getPipe(BlockPos pos) {
-        var tile = this.tileCache.get(pos);
+        PipeTileEntity tile = this.tileCache.get(pos);
         if (tile == null || tile.isRemoved()) {
-            tile = Utility.getBlockEntity(PipeBlockEntity.class, this.world, pos);
+            tile = Utility.getBlockEntity(PipeTileEntity.class, this.world, pos);
             this.tileCache.put(pos, tile);
         }
         return tile;
@@ -257,14 +265,14 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     public List<Pair<BlockPos, ItemStack>> getCurrentlyCrafting(BlockPos node, ItemEquality... equalityTypes) {
         this.startProfile("get_currently_crafting");
         List<Pair<BlockPos, ItemStack>> items = new ArrayList<>();
-        var craftingPipes = this.getAllCraftables(node).stream().map(c -> this.getPipe(c.getLeft())).distinct().iterator();
+        Iterator<PipeTileEntity> craftingPipes = this.getAllCraftables(node).stream().map(c -> this.getPipe(c.getLeft())).distinct().iterator();
         while (craftingPipes.hasNext()) {
-            var pipe = craftingPipes.next();
+            PipeTileEntity pipe = craftingPipes.next();
-            for (var request : pipe.craftResultRequests) {
+            for (Pair<BlockPos, ItemStack> request : pipe.craftResultRequests) {
-                var dest = request.getLeft();
+                BlockPos dest = request.getLeft();
-                var stack = request.getRight();
+                ItemStack stack = request.getRight();
                 // add up all the items that should go to the same location
-                var existing = items.stream()
+                Optional<Pair<BlockPos, ItemStack>> existing = items.stream()
                         .filter(s -> s.getLeft().equals(dest) && ItemEquality.compareItems(s.getRight(), stack, equalityTypes))
                         .findFirst();
                 if (existing.isPresent()) {
@@ -289,25 +297,25 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
             return Collections.emptyList();
         this.startProfile("get_all_craftables");
         List<Pair<BlockPos, ItemStack>> craftables = new ArrayList<>();
-        for (var dest : this.getOrderedNetworkNodes(node)) {
+        for (BlockPos dest : this.getOrderedNetworkNodes(node)) {
-            if (!this.world.isLoaded(dest))
+            if (!this.world.isBlockLoaded(dest))
                 continue;
-            var pipe = this.getPipe(dest);
+            PipeTileEntity pipe = this.getPipe(dest);
-            for (var stack : pipe.getAllCraftables())
+            for (ItemStack stack : pipe.getAllCraftables())
-                craftables.add(Pair.of(pipe.getBlockPos(), stack));
+                craftables.add(Pair.of(pipe.getPos(), stack));
         }
         this.endProfile();
         return craftables;
     }
 
     public int getCraftableAmount(BlockPos node, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain, ItemEquality... equalityTypes) {
-        var total = 0;
+        int total = 0;
-        for (var pair : this.getAllCraftables(node)) {
+        for (Pair<BlockPos, ItemStack> pair : this.getAllCraftables(node)) {
             if (!ItemEquality.compareItems(pair.getRight(), stack, equalityTypes))
                 continue;
-            if (!this.world.isLoaded(pair.getLeft()))
+            if (!this.world.isBlockLoaded(pair.getLeft()))
                 continue;
-            var pipe = this.getPipe(pair.getLeft());
+            PipeTileEntity pipe = this.getPipe(pair.getLeft());
             if (pipe != null)
                 total += pipe.getCraftableAmount(unavailableConsumer, stack, dependencyChain);
         }
@@ -319,20 +327,20 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
             return Collections.emptyList();
         this.startProfile("get_network_items");
         List<NetworkLocation> info = new ArrayList<>();
-        for (var dest : this.getOrderedNetworkNodes(node)) {
+        for (BlockPos dest : this.getOrderedNetworkNodes(node)) {
-            if (!this.world.isLoaded(dest))
+            if (!this.world.isBlockLoaded(dest))
                 continue;
-            var pipe = this.getPipe(dest);
+            PipeTileEntity pipe = this.getPipe(dest);
             if (!pipe.canNetworkSee())
                 continue;
-            for (var dir : Direction.values()) {
+            for (Direction dir : Direction.values()) {
-                var handler = pipe.getItemHandler(dir);
+                IItemHandler handler = pipe.getItemHandler(dir);
                 if (handler == null)
                     continue;
                 // check if this handler already exists (double-connected pipes, double chests etc.)
                 if (info.stream().anyMatch(l -> handler.equals(l.getItemHandler(this.world))))
                     continue;
-                var location = new NetworkLocation(dest, dir);
+                NetworkLocation location = new NetworkLocation(dest, dir);
                 if (!location.isEmpty(this.world))
                     info.add(location);
             }
@@ -362,7 +370,7 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     private void refreshNode(BlockPos pos, BlockState state) {
         this.startProfile("refresh_node");
         this.graph.removeAllEdges(new ArrayList<>(this.graph.edgesOf(pos)));
-        for (var edge : this.createAllEdges(pos, state, false))
+        for (NetworkEdge edge : this.createAllEdges(pos, state, false))
             this.addEdge(edge);
         this.endProfile();
     }
@@ -376,11 +384,11 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     public BlockPos getNodeFromPipe(BlockPos pos) {
         if (this.isNode(pos))
             return pos;
-        var state = this.world.getBlockState(pos);
+        BlockState state = this.world.getBlockState(pos);
         if (!(state.getBlock() instanceof PipeBlock))
             return null;
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var edge = this.createEdge(pos, state, dir, false);
+            NetworkEdge edge = this.createEdge(pos, state, dir, false);
             if (edge != null)
                 return edge.getEndPipe();
         }
@@ -390,8 +398,8 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     private List<NetworkEdge> createAllEdges(BlockPos pos, BlockState state, boolean ignoreCurrBlocked) {
         this.startProfile("create_all_edges");
         List<NetworkEdge> edges = new ArrayList<>();
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var edge = this.createEdge(pos, state, dir, ignoreCurrBlocked);
+            NetworkEdge edge = this.createEdge(pos, state, dir, ignoreCurrBlocked);
             if (edge != null)
                 edges.add(edge);
         }
@@ -400,14 +408,14 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     }
 
     private NetworkEdge createEdge(BlockPos pos, BlockState state, Direction dir, boolean ignoreCurrBlocked) {
-        if (!ignoreCurrBlocked && !state.getValue(PipeBlock.DIRECTIONS.get(dir)).isConnected())
+        if (!ignoreCurrBlocked && !state.get(PipeBlock.DIRECTIONS.get(dir)).isConnected())
             return null;
-        var currPos = pos.relative(dir);
+        BlockPos currPos = pos.offset(dir);
-        var currState = this.world.getBlockState(currPos);
+        BlockState currState = this.world.getBlockState(currPos);
         if (!(currState.getBlock() instanceof PipeBlock))
             return null;
         this.startProfile("create_edge");
-        var edge = new NetworkEdge();
+        NetworkEdge edge = new NetworkEdge();
         edge.pipes.add(pos);
         edge.pipes.add(currPos);
 
@@ -419,12 +427,12 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
                 return edge;
             }
 
-            var found = false;
+            boolean found = false;
-            for (var nextDir : Direction.values()) {
+            for (Direction nextDir : Direction.values()) {
-                if (!currState.getValue(PipeBlock.DIRECTIONS.get(nextDir)).isConnected())
+                if (!currState.get(PipeBlock.DIRECTIONS.get(nextDir)).isConnected())
                     continue;
-                var offset = currPos.relative(nextDir);
+                BlockPos offset = currPos.offset(nextDir);
-                var offState = this.world.getBlockState(offset);
+                BlockState offState = this.world.getBlockState(offset);
                 if (!(offState.getBlock() instanceof PipeBlock))
                     continue;
                 if (edge.pipes.contains(offset))
@@ -445,10 +453,10 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     public List<BlockPos> getOrderedNetworkNodes(BlockPos node) {
         if (!this.isNode(node))
             return Collections.emptyList();
-        var ret = this.nodeToConnectedNodes.get(node);
+        List<BlockPos> ret = this.nodeToConnectedNodes.get(node);
         if (ret == null) {
             this.startProfile("compile_connected_nodes");
-            var paths = this.dijkstra.getPaths(node);
+            ShortestPathAlgorithm.SingleSourcePaths<BlockPos, NetworkEdge> paths = this.dijkstra.getPaths(node);
             // sort destinations first by their priority (eg trash pipes should be last)
             // and then by their distance from the specified node
             ret = Streams.stream(new BreadthFirstIterator<>(this.graph, node))
@@ -464,7 +472,7 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     public void clearDestinationCache(BlockPos... nodes) {
         this.startProfile("clear_node_cache");
         // remove caches for the nodes
-        for (var node : nodes)
+        for (BlockPos node : nodes)
             this.nodeToConnectedNodes.keySet().remove(node);
         // remove caches that contain the nodes as a destination
         this.nodeToConnectedNodes.values().removeIf(cached -> Arrays.stream(nodes).anyMatch(cached::contains));
@@ -477,7 +485,7 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
 
     public Stream<IPipeItem> getPipeItemsOnTheWay(BlockPos goalInv) {
         this.startProfile("get_pipe_items_on_the_way");
-        var ret = this.pipeItems.values().stream().filter(i -> i.getDestInventory().equals(goalInv));
+        Stream<IPipeItem> ret = this.pipeItems.values().stream().filter(i -> i.getDestInventory().equals(goalInv));
         this.endProfile();
         return ret;
     }
@@ -507,11 +515,11 @@ public class PipeNetwork implements ICapabilitySerializable<CompoundTag>, GraphL
     }
 
     public void startProfile(String name) {
-        this.world.getProfiler().push(() -> PrettyPipes.ID + ":pipe_network_" + name);
+        this.world.getProfiler().startSection(() -> PrettyPipes.ID + ":pipe_network_" + name);
     }
 
     public void endProfile() {
-        this.world.getProfiler().pop();
+        this.world.getProfiler().endSection();
     }
 
     public static PipeNetwork get(Level world) {

src/main/java/de/ellpeck/prettypipes/packets/PacketButton.java

@@ -2,25 +2,27 @@ package de.ellpeck.prettypipes.packets;
 
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.items.IModule;
+import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.misc.ItemFilter.IFilteredContainer;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
 import de.ellpeck.prettypipes.pipe.modules.modifier.FilterModifierModuleContainer;
 import de.ellpeck.prettypipes.pipe.modules.modifier.FilterModifierModuleItem;
 import de.ellpeck.prettypipes.pipe.modules.stacksize.StackSizeModuleItem;
-import de.ellpeck.prettypipes.terminal.CraftingTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.CraftingTerminalTileEntity;
-import de.ellpeck.prettypipes.terminal.ItemTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.ItemTerminalTileEntity;
 import net.minecraft.client.Minecraft;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.ServerPlayerEntity;
-import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.inventory.container.Container;
-import net.minecraft.world.MenuProvider;
+import net.minecraft.inventory.container.INamedContainerProvider;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.network.PacketBuffer;
-import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.util.math.BlockPos;
-import net.minecraftforge.network.NetworkEvent;
+import net.minecraft.util.text.ITextComponent;
-import net.minecraftforge.network.NetworkHooks;
+import net.minecraftforge.fml.network.NetworkEvent;
+import net.minecraftforge.fml.network.NetworkHooks;
 import org.apache.logging.log4j.util.TriConsumer;
 
 import javax.annotation.Nullable;
@@ -42,15 +44,15 @@ public class PacketButton {
 
     }
 
-    public static PacketButton fromBytes(FriendlyByteBuf buf) {
+    public static PacketButton fromBytes(PacketBuffer buf) {
-        var packet = new PacketButton();
+        PacketButton packet = new PacketButton();
         packet.pos = buf.readBlockPos();
         packet.result = ButtonResult.values()[buf.readByte()];
         packet.data = buf.readVarIntArray();
         return packet;
     }
 
-    public static void toBytes(PacketButton packet, FriendlyByteBuf buf) {
+    public static void toBytes(PacketButton packet, PacketBuffer buf) {
         buf.writeBlockPos(packet.pos);
         buf.writeByte(packet.result.ordinal());
         buf.writeVarIntArray(packet.data);
@@ -61,7 +63,7 @@ public class PacketButton {
         ctx.get().enqueueWork(new Runnable() {
             @Override
             public void run() {
-                Player player = ctx.get().getSender();
+                PlayerEntity player = ctx.get().getSender();
                 message.result.action.accept(message.pos, message.data, player);
             }
         });
@@ -75,23 +77,22 @@ public class PacketButton {
 
     public enum ButtonResult {
         PIPE_TAB((pos, data, player) -> {
-            var tile = Utility.getBlockEntity(PipeBlockEntity.class, player.level, pos);
+            PipeTileEntity tile = Utility.getBlockEntity(PipeTileEntity.class, player.world, pos);
             if (data[0] < 0) {
-                NetworkHooks.openGui((ServerPlayer) player, tile, pos);
+                NetworkHooks.openGui((ServerPlayerEntity) player, tile, pos);
             } else {
-                var stack = tile.modules.getStackInSlot(data[0]);
+                ItemStack stack = tile.modules.getStackInSlot(data[0]);
-                NetworkHooks.openGui((ServerPlayer) player, new MenuProvider() {
+                NetworkHooks.openGui((ServerPlayerEntity) player, new INamedContainerProvider() {
                     @Override
-                    public Component getDisplayName() {
+                    public ITextComponent getDisplayName() {
                         return stack.getDisplayName();
                     }
 
                     @Nullable
                     @Override
-                    public AbstractContainerMenu createMenu(int windowId, Inventory inv, Player player) {
+                    public Container createMenu(int windowId, PlayerInventory inv, PlayerEntity player) {
                         return ((IModule) stack.getItem()).getContainer(stack, tile, windowId, inv, player, data[0]);
                     }
-
                 }, buf -> {
                     buf.writeBlockPos(pos);
                     buf.writeInt(data[0]);
@@ -99,34 +100,34 @@ public class PacketButton {
             }
         }),
         FILTER_CHANGE((pos, data, player) -> {
-            var container = (IFilteredContainer) player.containerMenu;
+            IFilteredContainer container = (IFilteredContainer) player.openContainer;
-            var filter = container.getFilter();
+            ItemFilter filter = container.getFilter();
             filter.onButtonPacket(data[0]);
         }),
         STACK_SIZE_MODULE_BUTTON((pos, data, player) -> {
-            var container = (AbstractPipeContainer<?>) player.containerMenu;
+            AbstractPipeContainer<?> container = (AbstractPipeContainer<?>) player.openContainer;
             StackSizeModuleItem.setLimitToMaxStackSize(container.moduleStack, !StackSizeModuleItem.getLimitToMaxStackSize(container.moduleStack));
         }),
         STACK_SIZE_AMOUNT((pos, data, player) -> {
-            var container = (AbstractPipeContainer<?>) player.containerMenu;
+            AbstractPipeContainer<?> container = (AbstractPipeContainer<?>) player.openContainer;
             StackSizeModuleItem.setMaxStackSize(container.moduleStack, data[0]);
         }),
         CRAFT_TERMINAL_REQUEST((pos, data, player) -> {
-            var tile = Utility.getBlockEntity(CraftingTerminalBlockEntity.class, player.level, pos);
+            CraftingTerminalTileEntity tile = Utility.getBlockEntity(CraftingTerminalTileEntity.class, player.world, pos);
             tile.requestCraftingItems(player, data[0]);
         }),
         CANCEL_CRAFTING((pos, data, player) -> {
-            var tile = Utility.getBlockEntity(ItemTerminalBlockEntity.class, player.level, pos);
+            ItemTerminalTileEntity tile = Utility.getBlockEntity(ItemTerminalTileEntity.class, player.world, pos);
             tile.cancelCrafting();
         }),
         TAG_FILTER((pos, data, player) -> {
-            var container = (FilterModifierModuleContainer) player.containerMenu;
+            FilterModifierModuleContainer container = (FilterModifierModuleContainer) player.openContainer;
             FilterModifierModuleItem.setFilterTag(container.moduleStack, container.getTags().get(data[0]));
         });
 
-        public final TriConsumer<BlockPos, int[], Player> action;
+        public final TriConsumer<BlockPos, int[], PlayerEntity> action;
 
-        ButtonResult(TriConsumer<BlockPos, int[], Player> action) {
+        ButtonResult(TriConsumer<BlockPos, int[], PlayerEntity> action) {
             this.action = action;
         }
     }

src/main/java/de/ellpeck/prettypipes/packets/PacketCraftingModuleTransfer.java

@@ -1,12 +1,12 @@
 package de.ellpeck.prettypipes.packets;
 
 import de.ellpeck.prettypipes.pipe.modules.craft.CraftingModuleContainer;
-import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.network.PacketBuffer;
+import net.minecraftforge.fml.network.NetworkEvent;
 import net.minecraftforge.items.ItemHandlerHelper;
 import net.minecraftforge.items.ItemStackHandler;
-import net.minecraftforge.network.NetworkEvent;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -26,24 +26,24 @@ public class PacketCraftingModuleTransfer {
 
     }
 
-    public static PacketCraftingModuleTransfer fromBytes(FriendlyByteBuf buf) {
+    public static PacketCraftingModuleTransfer fromBytes(PacketBuffer buf) {
-        var packet = new PacketCraftingModuleTransfer();
+        PacketCraftingModuleTransfer packet = new PacketCraftingModuleTransfer();
         packet.inputs = new ArrayList<>();
-        for (var i = buf.readInt(); i > 0; i--)
+        for (int i = buf.readInt(); i > 0; i--)
-            packet.inputs.add(buf.readItem());
+            packet.inputs.add(buf.readItemStack());
         packet.outputs = new ArrayList<>();
-        for (var i = buf.readInt(); i > 0; i--)
+        for (int i = buf.readInt(); i > 0; i--)
-            packet.outputs.add(buf.readItem());
+            packet.outputs.add(buf.readItemStack());
         return packet;
     }
 
-    public static void toBytes(PacketCraftingModuleTransfer packet, FriendlyByteBuf buf) {
+    public static void toBytes(PacketCraftingModuleTransfer packet, PacketBuffer buf) {
         buf.writeInt(packet.inputs.size());
-        for (var stack : packet.inputs)
+        for (ItemStack stack : packet.inputs)
-            buf.writeItem(stack);
+            buf.writeItemStack(stack);
         buf.writeInt(packet.outputs.size());
-        for (var stack : packet.outputs)
+        for (ItemStack stack : packet.outputs)
-            buf.writeItem(stack);
+            buf.writeItemStack(stack);
     }
 
     @SuppressWarnings("Convert2Lambda")
@@ -51,12 +51,13 @@ public class PacketCraftingModuleTransfer {
         ctx.get().enqueueWork(new Runnable() {
             @Override
             public void run() {
-                Player player = ctx.get().getSender();
+                PlayerEntity player = ctx.get().getSender();
-                if (player.containerMenu instanceof CraftingModuleContainer container) {
+                if (player.openContainer instanceof CraftingModuleContainer) {
+                    CraftingModuleContainer container = (CraftingModuleContainer) player.openContainer;
                     copy(container.input, message.inputs);
                     copy(container.output, message.outputs);
                     container.modified = true;
-                    container.broadcastChanges();
+                    container.detectAndSendChanges();
                 }
             }
         });
@@ -64,9 +65,9 @@ public class PacketCraftingModuleTransfer {
     }
 
     private static void copy(ItemStackHandler container, List<ItemStack> contents) {
-        for (var i = 0; i < container.getSlots(); i++)
+        for (int i = 0; i < container.getSlots(); i++)
             container.setStackInSlot(i, ItemStack.EMPTY);
-        for (var stack : contents)
+        for (ItemStack stack : contents)
             ItemHandlerHelper.insertItem(container, stack, false);
     }
 }

src/main/java/de/ellpeck/prettypipes/packets/PacketGhostSlot.java

@@ -3,13 +3,13 @@ package de.ellpeck.prettypipes.packets;
 import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.ListMultimap;
 import de.ellpeck.prettypipes.Utility;
-import de.ellpeck.prettypipes.terminal.CraftingTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.CraftingTerminalTileEntity;
 import net.minecraft.client.Minecraft;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.network.FriendlyByteBuf;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
-import net.minecraftforge.network.NetworkEvent;
+import net.minecraft.network.PacketBuffer;
+import net.minecraft.util.math.BlockPos;
+import net.minecraftforge.fml.network.NetworkEvent;
 
 import java.util.Map;
 import java.util.function.Consumer;
@@ -29,35 +29,35 @@ public class PacketGhostSlot {
 
     }
 
-    public static PacketGhostSlot fromBytes(FriendlyByteBuf buf) {
+    public static PacketGhostSlot fromBytes(PacketBuffer buf) {
-        var packet = new PacketGhostSlot();
+        PacketGhostSlot packet = new PacketGhostSlot();
         packet.pos = buf.readBlockPos();
         packet.stacks = ArrayListMultimap.create();
-        for (var i = buf.readInt(); i > 0; i--)
+        for (int i = buf.readInt(); i > 0; i--)
-            packet.stacks.put(buf.readInt(), buf.readItem());
+            packet.stacks.put(buf.readInt(), buf.readItemStack());
         return packet;
     }
 
-    public static void toBytes(PacketGhostSlot packet, FriendlyByteBuf buf) {
+    public static void toBytes(PacketGhostSlot packet, PacketBuffer buf) {
         buf.writeBlockPos(packet.pos);
         buf.writeInt(packet.stacks.size());
-        for (var entry : packet.stacks.entries()) {
+        for (Map.Entry<Integer, ItemStack> entry : packet.stacks.entries()) {
             buf.writeInt(entry.getKey());
-            buf.writeItem(entry.getValue());
+            buf.writeItemStack(entry.getValue());
         }
     }
 
     @SuppressWarnings("Convert2Lambda")
     public static void onMessage(PacketGhostSlot message, Supplier<NetworkEvent.Context> ctx) {
-        var doIt = (Consumer<Player>) p -> {
+        Consumer<PlayerEntity> doIt = p -> {
-            var tile = Utility.getBlockEntity(CraftingTerminalBlockEntity.class, p.level, message.pos);
+            CraftingTerminalTileEntity tile = Utility.getBlockEntity(CraftingTerminalTileEntity.class, p.world, message.pos);
             if (tile != null)
                 tile.setGhostItems(message.stacks);
         };
 
         // this whole thing is a dirty hack for allowing the same packet to be used
         // both client -> server and server -> client without any classloading issues
-        Player player = ctx.get().getSender();
+        PlayerEntity player = ctx.get().getSender();
         // are we on the client?
         if (player == null) {
             ctx.get().enqueueWork(new Runnable() {

src/main/java/de/ellpeck/prettypipes/packets/PacketHandler.java

@@ -1,14 +1,15 @@
 package de.ellpeck.prettypipes.packets;
 
 import de.ellpeck.prettypipes.PrettyPipes;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.player.ServerPlayerEntity;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.util.math.BlockPos;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.IWorld;
-import net.minecraft.world.level.Level;
+import net.minecraft.world.World;
-import net.minecraftforge.network.NetworkRegistry;
+import net.minecraftforge.fml.network.NetworkRegistry;
-import net.minecraftforge.network.PacketDistributor;
+import net.minecraftforge.fml.network.PacketDistributor;
-import net.minecraftforge.network.simple.SimpleChannel;
+import net.minecraftforge.fml.network.simple.SimpleChannel;
 
 public final class PacketHandler {
 
@@ -25,12 +26,12 @@ public final class PacketHandler {
         network.registerMessage(5, PacketCraftingModuleTransfer.class, PacketCraftingModuleTransfer::toBytes, PacketCraftingModuleTransfer::fromBytes, PacketCraftingModuleTransfer::onMessage);
     }
 
-    public static void sendToAllLoaded(Level world, BlockPos pos, Object message) {
+    public static void sendToAllLoaded(World world, BlockPos pos, Object message) {
         network.send(PacketDistributor.TRACKING_CHUNK.with(() -> world.getChunkAt(pos)), message);
     }
 
-    public static void sendTo(Player player, Object message) {
+    public static void sendTo(PlayerEntity player, Object message) {
-        network.send(PacketDistributor.PLAYER.with(() -> (ServerPlayer) player), message);
+        network.send(PacketDistributor.PLAYER.with(() -> (ServerPlayerEntity) player), message);
     }
 
     public static void sendToServer(Object message) {

src/main/java/de/ellpeck/prettypipes/packets/PacketItemEnterPipe.java

@@ -2,12 +2,12 @@ package de.ellpeck.prettypipes.packets;
 
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.pipe.IPipeItem;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import net.minecraft.client.Minecraft;
-import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.PacketBuffer;
-import net.minecraftforge.network.NetworkEvent;
+import net.minecraft.util.math.BlockPos;
+import net.minecraftforge.fml.network.NetworkEvent;
 
 import java.util.function.Supplier;
 
@@ -25,16 +25,16 @@ public class PacketItemEnterPipe {
 
     }
 
-    public static PacketItemEnterPipe fromBytes(FriendlyByteBuf buf) {
+    public static PacketItemEnterPipe fromBytes(PacketBuffer buf) {
-        var client = new PacketItemEnterPipe();
+        PacketItemEnterPipe client = new PacketItemEnterPipe();
         client.tilePos = buf.readBlockPos();
-        client.item = buf.readNbt();
+        client.item = buf.readCompoundTag();
         return client;
     }
 
-    public static void toBytes(PacketItemEnterPipe packet, FriendlyByteBuf buf) {
+    public static void toBytes(PacketItemEnterPipe packet, PacketBuffer buf) {
         buf.writeBlockPos(packet.tilePos);
-        buf.writeNbt(packet.item);
+        buf.writeCompoundTag(packet.item);
     }
 
     @SuppressWarnings("Convert2Lambda")
@@ -42,11 +42,11 @@ public class PacketItemEnterPipe {
         ctx.get().enqueueWork(new Runnable() {
             @Override
             public void run() {
-                var mc = Minecraft.getInstance();
+                Minecraft mc = Minecraft.getInstance();
-                if (mc.level == null)
+                if (mc.world == null)
                     return;
-                var item = IPipeItem.load(message.item);
+                IPipeItem item = IPipeItem.load(message.item);
-                var pipe = Utility.getBlockEntity(PipeBlockEntity.class, mc.level, message.tilePos);
+                PipeTileEntity pipe = Utility.getBlockEntity(PipeTileEntity.class, mc.world, message.tilePos);
                 if (pipe != null)
                     pipe.getItems().add(item);
             }

src/main/java/de/ellpeck/prettypipes/packets/PacketNetworkItems.java

@@ -2,9 +2,13 @@ package de.ellpeck.prettypipes.packets;
 
 import de.ellpeck.prettypipes.terminal.containers.ItemTerminalGui;
 import net.minecraft.client.Minecraft;
-import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.inventory.container.Container;
 import net.minecraft.world.item.ItemStack;
-import net.minecraftforge.network.NetworkEvent;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.network.PacketBuffer;
+import net.minecraft.util.math.BlockPos;
+import net.minecraftforge.fml.network.NetworkEvent;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -26,37 +30,37 @@ public class PacketNetworkItems {
 
     }
 
-    public static PacketNetworkItems fromBytes(FriendlyByteBuf buf) {
+    public static PacketNetworkItems fromBytes(PacketBuffer buf) {
-        var client = new PacketNetworkItems();
+        PacketNetworkItems client = new PacketNetworkItems();
         client.items = new ArrayList<>();
-        for (var i = buf.readVarInt(); i > 0; i--) {
+        for (int i = buf.readVarInt(); i > 0; i--) {
-            var stack = buf.readItem();
+            ItemStack stack = buf.readItemStack();
             stack.setCount(buf.readVarInt());
             client.items.add(stack);
         }
         client.craftables = new ArrayList<>();
-        for (var i = buf.readVarInt(); i > 0; i--)
+        for (int i = buf.readVarInt(); i > 0; i--)
-            client.craftables.add(buf.readItem());
+            client.craftables.add(buf.readItemStack());
         client.currentlyCrafting = new ArrayList<>();
-        for (var i = buf.readVarInt(); i > 0; i--)
+        for (int i = buf.readVarInt(); i > 0; i--)
-            client.currentlyCrafting.add(buf.readItem());
+            client.currentlyCrafting.add(buf.readItemStack());
         return client;
     }
 
-    public static void toBytes(PacketNetworkItems packet, FriendlyByteBuf buf) {
+    public static void toBytes(PacketNetworkItems packet, PacketBuffer buf) {
         buf.writeVarInt(packet.items.size());
-        for (var stack : packet.items) {
+        for (ItemStack stack : packet.items) {
-            var copy = stack.copy();
+            ItemStack copy = stack.copy();
             copy.setCount(1);
-            buf.writeItem(copy);
+            buf.writeItemStack(copy);
             buf.writeVarInt(stack.getCount());
         }
         buf.writeVarInt(packet.craftables.size());
-        for (var stack : packet.craftables)
+        for (ItemStack stack : packet.craftables)
-            buf.writeItem(stack);
+            buf.writeItemStack(stack);
         buf.writeVarInt(packet.currentlyCrafting.size());
-        for (var stack : packet.currentlyCrafting)
+        for (ItemStack stack : packet.currentlyCrafting)
-            buf.writeItem(stack);
+            buf.writeItemStack(stack);
     }
 
     @SuppressWarnings("Convert2Lambda")
@@ -64,9 +68,9 @@ public class PacketNetworkItems {
         ctx.get().enqueueWork(new Runnable() {
             @Override
             public void run() {
-                var mc = Minecraft.getInstance();
+                Minecraft mc = Minecraft.getInstance();
-                if (mc.screen instanceof ItemTerminalGui terminal)
+                if (mc.currentScreen instanceof ItemTerminalGui)
-                    terminal.updateItemList(message.items, message.craftables, message.currentlyCrafting);
+                    ((ItemTerminalGui) mc.currentScreen).updateItemList(message.items, message.craftables, message.currentlyCrafting);
             }
         });
         ctx.get().setPacketHandled(true);

src/main/java/de/ellpeck/prettypipes/packets/PacketRequest.java

@@ -1,12 +1,12 @@
 package de.ellpeck.prettypipes.packets;
 
 import de.ellpeck.prettypipes.Utility;
-import de.ellpeck.prettypipes.terminal.ItemTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.ItemTerminalTileEntity;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.network.FriendlyByteBuf;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
-import net.minecraftforge.network.NetworkEvent;
+import net.minecraft.network.PacketBuffer;
+import net.minecraft.util.math.BlockPos;
+import net.minecraftforge.fml.network.NetworkEvent;
 
 import java.util.function.Supplier;
 
@@ -26,17 +26,17 @@ public class PacketRequest {
 
     }
 
-    public static PacketRequest fromBytes(FriendlyByteBuf buf) {
+    public static PacketRequest fromBytes(PacketBuffer buf) {
-        var packet = new PacketRequest();
+        PacketRequest packet = new PacketRequest();
         packet.pos = buf.readBlockPos();
-        packet.stack = buf.readItem();
+        packet.stack = buf.readItemStack();
         packet.amount = buf.readVarInt();
         return packet;
     }
 
-    public static void toBytes(PacketRequest packet, FriendlyByteBuf buf) {
+    public static void toBytes(PacketRequest packet, PacketBuffer buf) {
         buf.writeBlockPos(packet.pos);
-        buf.writeItem(packet.stack);
+        buf.writeItemStack(packet.stack);
         buf.writeVarInt(packet.amount);
     }
 
@@ -45,8 +45,8 @@ public class PacketRequest {
         ctx.get().enqueueWork(new Runnable() {
             @Override
             public void run() {
-                Player player = ctx.get().getSender();
+                PlayerEntity player = ctx.get().getSender();
-                var tile = Utility.getBlockEntity(ItemTerminalBlockEntity.class, player.level, message.pos);
+                ItemTerminalTileEntity tile = Utility.getBlockEntity(ItemTerminalTileEntity.class, player.world, message.pos);
                 message.stack.setCount(message.amount);
                 tile.requestItem(player, message.stack);
             }

src/main/java/de/ellpeck/prettypipes/pipe/IPipeConnectable.java

@@ -1,8 +1,8 @@
 package de.ellpeck.prettypipes.pipe;
 
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Direction;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
 
 public interface IPipeConnectable {
 

src/main/java/de/ellpeck/prettypipes/pipe/IPipeItem.java

@@ -1,14 +1,16 @@
 package de.ellpeck.prettypipes.pipe;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Maps;
+import com.mojang.blaze3d.matrix.MatrixStack;
 import de.ellpeck.prettypipes.network.NetworkEdge;
 import de.ellpeck.prettypipes.network.PipeItem;
-import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.IRenderTypeBuffer;
-import net.minecraft.core.BlockPos;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.level.Level;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.common.util.INBTSerializable;
@@ -29,9 +31,9 @@ public interface IPipeItem extends INBTSerializable<CompoundTag> {
 
     void setDestination(BlockPos startInventory, BlockPos destInventory, GraphPath<BlockPos, NetworkEdge> path);
 
-    void updateInPipe(PipeBlockEntity currPipe);
+    void updateInPipe(PipeTileEntity currPipe);
 
-    void drop(Level world, ItemStack stack);
+    void drop(World world, ItemStack stack);
 
     BlockPos getDestPipe();
 
@@ -42,11 +44,15 @@ public interface IPipeItem extends INBTSerializable<CompoundTag> {
     int getItemsOnTheWay(BlockPos goalInv);
 
     @OnlyIn(Dist.CLIENT)
-    void render(PipeBlockEntity tile, PoseStack matrixStack, Random random, float partialTicks, int light, int overlay, MultiBufferSource source);
+    void render(PipeTileEntity tile, MatrixStack matrixStack, Random random, float partialTicks, int light, int overlay, IRenderTypeBuffer buffer);
 
     static IPipeItem load(CompoundTag nbt) {
-        var type = new ResourceLocation(nbt.getString("type"));
+        // TODO legacy compat, remove eventually
-        var func = TYPES.get(type);
+        if (!nbt.contains("type"))
+            nbt.putString("type", PipeItem.TYPE.toString());
+
+        ResourceLocation type = new ResourceLocation(nbt.getString("type"));
+        BiFunction<ResourceLocation, CompoundTag, IPipeItem> func = TYPES.get(type);
         return func != null ? func.apply(type, nbt) : null;
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/PipeBlock.java

@@ -5,36 +5,51 @@ import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.network.PipeNetwork;
+import net.minecraft.block.*;
+import net.minecraft.block.material.Material;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.player.ServerPlayerEntity;
+import net.minecraft.fluid.FluidState;
+import net.minecraft.fluid.Fluids;
+import net.minecraft.item.BlockItemUseContext;
 import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.tags.FluidTags;
 import net.minecraft.world.InteractionHand;
 import net.minecraft.world.InteractionResult;
-import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.context.BlockPlaceContext;
+import net.minecraft.state.EnumProperty;
-import net.minecraft.world.level.BlockGetter;
+import net.minecraft.state.StateContainer;
+import net.minecraft.state.properties.BlockStateProperties;
+import net.minecraft.tags.FluidTags;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.ActionResultType;
+import net.minecraft.util.Direction;
+import net.minecraft.util.Hand;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.BlockRayTraceResult;
+import net.minecraft.util.math.shapes.IBooleanFunction;
+import net.minecraft.util.math.shapes.ISelectionContext;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.util.math.shapes.VoxelShapes;
+import net.minecraft.world.IBlockReader;
+import net.minecraft.world.IWorld;
+import net.minecraft.world.World;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.level.LevelAccessor;
+import net.minecraft.world.level.block.BaseEntityBlock;
-import net.minecraft.world.level.block.*;
+import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.SoundType;
-import net.minecraft.world.level.block.entity.BlockEntityTicker;
-import net.minecraft.world.level.block.entity.BlockEntityType;
 import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.level.block.state.StateDefinition;
 import net.minecraft.world.level.block.state.properties.BlockStateProperties;
 import net.minecraft.world.level.block.state.properties.EnumProperty;
-import net.minecraft.world.level.material.FluidState;
-import net.minecraft.world.level.material.Fluids;
 import net.minecraft.world.level.material.Material;
 import net.minecraft.world.phys.BlockHitResult;
-import net.minecraft.world.phys.shapes.BooleanOp;
-import net.minecraft.world.phys.shapes.CollisionContext;
-import net.minecraft.world.phys.shapes.Shapes;
 import net.minecraft.world.phys.shapes.VoxelShape;
+import net.minecraftforge.fml.network.NetworkHooks;
 import net.minecraftforge.items.CapabilityItemHandler;
+import net.minecraftforge.items.IItemHandler;
 import net.minecraftforge.items.ItemHandlerHelper;
 import net.minecraftforge.network.NetworkHooks;
 import org.apache.commons.lang3.mutable.MutableObject;
@@ -61,31 +76,31 @@ public class PipeBlock extends BaseEntityBlock {
             .build();
 
     static {
-        for (var dir : Direction.values())
+        for (Direction dir : Direction.values())
             DIRECTIONS.put(dir, EnumProperty.create(dir.getName(), ConnectionType.class));
     }
 
     public PipeBlock() {
         super(Block.Properties.of(Material.STONE).strength(2).sound(SoundType.STONE).noOcclusion());
 
-        var state = this.defaultBlockState().setValue(BlockStateProperties.WATERLOGGED, false);
+        BlockState state = this.defaultBlockState().setValue(BlockStateProperties.WATERLOGGED, false);
-        for (var prop : DIRECTIONS.values())
+        for (EnumProperty<ConnectionType> prop : DIRECTIONS.values())
             state = state.setValue(prop, ConnectionType.DISCONNECTED);
         this.registerDefaultState(state);
     }
 
     @Override
     public InteractionResult use(BlockState state, Level worldIn, BlockPos pos, Player player, InteractionHand handIn, BlockHitResult result) {
-        var tile = Utility.getBlockEntity(PipeBlockEntity.class, worldIn, pos);
+        PipeTileEntity tile = Utility.getBlockEntity(PipeTileEntity.class, worldIn, pos);
         if (tile == null)
             return InteractionResult.PASS;
         if (!tile.canHaveModules())
             return InteractionResult.PASS;
-        var stack = player.getItemInHand(handIn);
+        ItemStack stack = player.getItemInHand(handIn);
         if (stack.getItem() instanceof IModule) {
-            var copy = stack.copy();
+            ItemStack copy = stack.copy();
             copy.setCount(1);
-            var remain = ItemHandlerHelper.insertItem(tile.modules, copy, false);
+            ItemStack remain = ItemHandlerHelper.insertItem(tile.modules, copy, false);
             if (remain.isEmpty()) {
                 stack.shrink(1);
                 return InteractionResult.SUCCESS;
@@ -99,62 +114,62 @@ public class PipeBlock extends BaseEntityBlock {
     }
 
     @Override
-    protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> builder) {
+    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
         builder.add(DIRECTIONS.values().toArray(new EnumProperty[0]));
         builder.add(BlockStateProperties.WATERLOGGED);
     }
 
     @Override
     public FluidState getFluidState(BlockState state) {
-        return state.getValue(BlockStateProperties.WATERLOGGED) ? Fluids.WATER.getSource(false) : super.getFluidState(state);
+        return state.get(BlockStateProperties.WATERLOGGED) ? Fluids.WATER.getStillFluidState(false) : super.getFluidState(state);
     }
 
     @Override
-    public void neighborChanged(BlockState state, Level worldIn, BlockPos pos, Block blockIn, BlockPos fromPos, boolean isMoving) {
+    public void neighborChanged(BlockState state, World worldIn, BlockPos pos, Block blockIn, BlockPos fromPos, boolean isMoving) {
-        var newState = this.createState(worldIn, pos, state);
+        BlockState newState = this.createState(worldIn, pos, state);
         if (newState != state) {
-            worldIn.setBlockAndUpdate(pos, newState);
+            worldIn.setBlockState(pos, newState);
             onStateChanged(worldIn, pos, newState);
         }
     }
 
     @Nullable
     @Override
-    public BlockState getStateForPlacement(BlockPlaceContext context) {
+    public BlockState getStateForPlacement(BlockItemUseContext context) {
-        return this.createState(context.getLevel(), context.getClickedPos(), this.defaultBlockState());
+        return this.createState(context.getWorld(), context.getPos(), this.getDefaultState());
     }
 
     @Override
-    public BlockState updateShape(BlockState stateIn, Direction facing, BlockState facingState, LevelAccessor worldIn, BlockPos currentPos, BlockPos facingPos) {
+    public BlockState updatePostPlacement(BlockState stateIn, Direction facing, BlockState facingState, IWorld worldIn, BlockPos currentPos, BlockPos facingPos) {
-        if (stateIn.getValue(BlockStateProperties.WATERLOGGED))
+        if (stateIn.get(BlockStateProperties.WATERLOGGED))
-            worldIn.scheduleTick(currentPos, Fluids.WATER, Fluids.WATER.getTickDelay(worldIn));
+            worldIn.getPendingFluidTicks().scheduleTick(currentPos, Fluids.WATER, Fluids.WATER.getTickRate(worldIn));
-        return super.updateShape(stateIn, facing, facingState, worldIn, currentPos, facingPos);
+        return super.updatePostPlacement(stateIn, facing, facingState, worldIn, currentPos, facingPos);
     }
 
     @Override
-    public void setPlacedBy(Level worldIn, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
+    public void onBlockPlacedBy(World worldIn, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
         onStateChanged(worldIn, pos, state);
     }
 
     @Override
-    public VoxelShape getShape(BlockState state, BlockGetter worldIn, BlockPos pos, CollisionContext context) {
+    public VoxelShape getShape(BlockState state, IBlockReader worldIn, BlockPos pos, ISelectionContext context) {
         return this.cacheAndGetShape(state, worldIn, pos, s -> s.getShape(worldIn, pos, context), SHAPE_CACHE, null);
     }
 
     @Override
-    public VoxelShape getCollisionShape(BlockState state, BlockGetter worldIn, BlockPos pos, CollisionContext context) {
+    public VoxelShape getCollisionShape(BlockState state, IBlockReader worldIn, BlockPos pos, ISelectionContext context) {
         return this.cacheAndGetShape(state, worldIn, pos, s -> s.getCollisionShape(worldIn, pos, context), COLL_SHAPE_CACHE, s -> {
             // make the shape a bit higher so we can jump up onto a higher block
-            var newShape = new MutableObject<VoxelShape>(Shapes.empty());
+            MutableObject<VoxelShape> newShape = new MutableObject<>(VoxelShapes.empty());
-            s.forAllBoxes((x1, y1, z1, x2, y2, z2) -> newShape.setValue(Shapes.join(Shapes.create(x1, y1, z1, x2, y2 + 3 / 16F, z2), newShape.getValue(), BooleanOp.OR)));
+            s.forEachBox((x1, y1, z1, x2, y2, z2) -> newShape.setValue(VoxelShapes.combine(VoxelShapes.create(x1, y1, z1, x2, y2 + 3 / 16F, z2), newShape.getValue(), IBooleanFunction.OR)));
-            return newShape.getValue().optimize();
+            return newShape.getValue().simplify();
         });
     }
 
-    private VoxelShape cacheAndGetShape(BlockState state, BlockGetter worldIn, BlockPos pos, Function<BlockState, VoxelShape> coverShapeSelector, Map<Pair<BlockState, BlockState>, VoxelShape> cache, Function<VoxelShape, VoxelShape> shapeModifier) {
+    private VoxelShape cacheAndGetShape(BlockState state, IBlockReader worldIn, BlockPos pos, Function<BlockState, VoxelShape> coverShapeSelector, Map<Pair<BlockState, BlockState>, VoxelShape> cache, Function<VoxelShape, VoxelShape> shapeModifier) {
         VoxelShape coverShape = null;
         BlockState cover = null;
-        var tile = Utility.getBlockEntity(PipeBlockEntity.class, worldIn, pos);
+        PipeTileEntity tile = Utility.getBlockEntity(PipeTileEntity.class, worldIn, pos);
         if (tile != null && tile.cover != null) {
             cover = tile.cover;
             // try catch since the block might expect to find itself at the position
@@ -163,88 +178,88 @@ public class PipeBlock extends BaseEntityBlock {
             } catch (Exception ignored) {
             }
         }
-        var key = Pair.of(state, cover);
+        Pair<BlockState, BlockState> key = Pair.of(state, cover);
-        var shape = cache.get(key);
+        VoxelShape shape = cache.get(key);
         if (shape == null) {
             shape = CENTER_SHAPE;
-            for (var entry : DIRECTIONS.entrySet()) {
+            for (Map.Entry<Direction, EnumProperty<ConnectionType>> entry : DIRECTIONS.entrySet()) {
-                if (state.getValue(entry.getValue()).isConnected())
+                if (state.get(entry.getValue()).isConnected())
-                    shape = Shapes.or(shape, DIR_SHAPES.get(entry.getKey()));
+                    shape = VoxelShapes.or(shape, DIR_SHAPES.get(entry.getKey()));
             }
             if (shapeModifier != null)
                 shape = shapeModifier.apply(shape);
             if (coverShape != null)
-                shape = Shapes.or(shape, coverShape);
+                shape = VoxelShapes.or(shape, coverShape);
             cache.put(key, shape);
         }
         return shape;
     }
 
-    private BlockState createState(Level world, BlockPos pos, BlockState curr) {
+    private BlockState createState(World world, BlockPos pos, BlockState curr) {
-        var state = this.defaultBlockState();
+        BlockState state = this.getDefaultState();
-        var fluid = world.getFluidState(pos);
+        FluidState fluid = world.getFluidState(pos);
-        if (fluid.is(FluidTags.WATER) && fluid.getAmount() == 8)
+        if (fluid.isTagged(FluidTags.WATER) && fluid.getLevel() == 8)
-            state = state.setValue(BlockStateProperties.WATERLOGGED, true);
+            state = state.with(BlockStateProperties.WATERLOGGED, true);
 
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var prop = DIRECTIONS.get(dir);
+            EnumProperty<ConnectionType> prop = DIRECTIONS.get(dir);
-            var type = this.getConnectionType(world, pos, dir, state);
+            ConnectionType type = this.getConnectionType(world, pos, dir, state);
             // don't reconnect on blocked faces
-            if (type.isConnected() && curr.getValue(prop) == ConnectionType.BLOCKED)
+            if (type.isConnected() && curr.get(prop) == ConnectionType.BLOCKED)
                 type = ConnectionType.BLOCKED;
-            state = state.setValue(prop, type);
+            state = state.with(prop, type);
         }
         return state;
     }
 
-    protected ConnectionType getConnectionType(Level world, BlockPos pos, Direction direction, BlockState state) {
+    protected ConnectionType getConnectionType(World world, BlockPos pos, Direction direction, BlockState state) {
-        var offset = pos.relative(direction);
+        BlockPos offset = pos.offset(direction);
-        if (!world.isLoaded(offset))
+        if (!world.isBlockLoaded(offset))
             return ConnectionType.DISCONNECTED;
-        var opposite = direction.getOpposite();
+        Direction opposite = direction.getOpposite();
-        var tile = world.getBlockEntity(offset);
+        TileEntity tile = world.getTileEntity(offset);
         if (tile != null) {
-            var connectable = tile.getCapability(Registry.pipeConnectableCapability, opposite).orElse(null);
+            IPipeConnectable connectable = tile.getCapability(Registry.pipeConnectableCapability, opposite).orElse(null);
             if (connectable != null)
                 return connectable.getConnectionType(pos, direction);
-            var handler = tile.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, opposite).orElse(null);
+            IItemHandler handler = tile.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, opposite).orElse(null);
             if (handler != null)
                 return ConnectionType.CONNECTED;
         }
-        var blockHandler = Utility.getBlockItemHandler(world, offset, opposite);
+        IItemHandler blockHandler = Utility.getBlockItemHandler(world, offset, opposite);
         if (blockHandler != null)
             return ConnectionType.CONNECTED;
-        var offState = world.getBlockState(offset);
+        BlockState offState = world.getBlockState(offset);
         if (hasLegsTo(world, offState, offset, direction)) {
-            if (DIRECTIONS.values().stream().noneMatch(d -> state.getValue(d) == ConnectionType.LEGS))
+            if (DIRECTIONS.values().stream().noneMatch(d -> state.get(d) == ConnectionType.LEGS))
                 return ConnectionType.LEGS;
         }
         return ConnectionType.DISCONNECTED;
     }
 
-    protected static boolean hasLegsTo(Level world, BlockState state, BlockPos pos, Direction direction) {
+    protected static boolean hasLegsTo(World world, BlockState state, BlockPos pos, Direction direction) {
         if (state.getBlock() instanceof WallBlock || state.getBlock() instanceof FenceBlock)
             return direction == Direction.DOWN;
-        if (state.getMaterial() == Material.STONE || state.getMaterial() == Material.METAL)
+        if (state.getMaterial() == Material.ROCK || state.getMaterial() == Material.IRON)
-            return canSupportCenter(world, pos, direction.getOpposite());
+            return hasEnoughSolidSide(world, pos, direction.getOpposite());
         return false;
     }
 
-    public static void onStateChanged(Level world, BlockPos pos, BlockState newState) {
+    public static void onStateChanged(World world, BlockPos pos, BlockState newState) {
         // wait a few ticks before checking if we have to drop our modules, so that things like iron -> gold chest work
-        var tile = Utility.getBlockEntity(PipeBlockEntity.class, world, pos);
+        PipeTileEntity tile = Utility.getBlockEntity(PipeTileEntity.class, world, pos);
         if (tile != null)
             tile.moduleDropCheck = 5;
 
-        var network = PipeNetwork.get(world);
+        PipeNetwork network = PipeNetwork.get(world);
-        var connections = 0;
+        int connections = 0;
-        var force = false;
+        boolean force = false;
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var value = newState.getValue(DIRECTIONS.get(dir));
+            ConnectionType value = newState.get(DIRECTIONS.get(dir));
             if (!value.isConnected())
                 continue;
             connections++;
-            var otherState = world.getBlockState(pos.relative(dir));
+            BlockState otherState = world.getBlockState(pos.offset(dir));
             // force a node if we're connecting to a different block (inventory etc.)
             if (otherState.getBlock() != newState.getBlock()) {
                 force = true;
@@ -260,59 +275,53 @@ public class PipeBlock extends BaseEntityBlock {
     }
 
     @Override
-    public void onRemove(BlockState state, Level worldIn, BlockPos pos, BlockState newState, boolean isMoving) {
+    public void onReplaced(BlockState state, World worldIn, BlockPos pos, BlockState newState, boolean isMoving) {
         if (state.getBlock() != newState.getBlock()) {
-            var network = PipeNetwork.get(worldIn);
+            PipeNetwork network = PipeNetwork.get(worldIn);
             network.removeNode(pos);
             network.onPipeChanged(pos, state);
-            super.onRemove(state, worldIn, pos, newState, isMoving);
+            super.onReplaced(state, worldIn, pos, newState, isMoving);
         }
     }
 
     @Override
-    public void playerWillDestroy(Level worldIn, BlockPos pos, BlockState state, Player player) {
+    public void onBlockHarvested(World worldIn, BlockPos pos, BlockState state, PlayerEntity player) {
         dropItems(worldIn, pos, player);
-        super.playerWillDestroy(worldIn, pos, state, player);
+        super.onBlockHarvested(worldIn, pos, state, player);
     }
 
     @Override
-    public boolean hasAnalogOutputSignal(BlockState state) {
+    public boolean hasComparatorInputOverride(BlockState state) {
         return true;
     }
 
     @Override
-    public int getAnalogOutputSignal(BlockState state, Level world, BlockPos pos) {
+    public int getComparatorInputOverride(BlockState blockState, World worldIn, BlockPos pos) {
-        var pipe = Utility.getBlockEntity(PipeBlockEntity.class, world, pos);
+        PipeTileEntity pipe = Utility.getBlockEntity(PipeTileEntity.class, worldIn, pos);
         if (pipe == null)
             return 0;
         return Math.min(15, pipe.getItems().size());
     }
 
-    @org.jetbrains.annotations.Nullable
+    @Nullable
     @Override
-    public BlockEntity newBlockEntity(BlockPos pos, BlockState state) {
+    public TileEntity createNewTileEntity(IBlockReader worldIn) {
-        return new PipeBlockEntity(pos, state);
+        return new PipeTileEntity();
     }
 
     @Override
-    public RenderShape getRenderShape(BlockState state) {
+    public BlockRenderType getRenderType(BlockState state) {
-        return RenderShape.MODEL;
+        return BlockRenderType.MODEL;
     }
 
-    @org.jetbrains.annotations.Nullable
+    public static void dropItems(World worldIn, BlockPos pos, PlayerEntity player) {
-    @Override
+        PipeTileEntity tile = Utility.getBlockEntity(PipeTileEntity.class, worldIn, pos);
-    public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level level, BlockState state, BlockEntityType<T> type) {
-        return createTickerHelper(type, Registry.pipeBlockEntity, PipeBlockEntity::tick);
-    }
-
-    public static void dropItems(Level worldIn, BlockPos pos, Player player) {
-        var tile = Utility.getBlockEntity(PipeBlockEntity.class, worldIn, pos);
         if (tile != null) {
             Utility.dropInventory(tile, tile.modules);
-            for (var item : tile.getItems())
+            for (IPipeItem item : tile.getItems())
                 item.drop(worldIn, item.getContent());
             if (tile.cover != null)
-                tile.removeCover(player, InteractionHand.MAIN_HAND);
+                tile.removeCover(player, Hand.MAIN_HAND);
         }
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/PipeRenderer.java

@@ -1,51 +1,54 @@
 package de.ellpeck.prettypipes.pipe;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
+import com.mojang.blaze3d.vertex.IVertexBuilder;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.ItemBlockRenderTypes;
+import net.minecraft.client.renderer.BlockModelRenderer;
-import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.IRenderTypeBuffer;
 import net.minecraft.client.renderer.RenderType;
-import net.minecraft.client.renderer.blockentity.BlockEntityRenderer;
+import net.minecraft.client.renderer.RenderTypeLookup;
-import net.minecraft.client.renderer.blockentity.BlockEntityRendererProvider;
+import net.minecraft.client.renderer.tileentity.TileEntityRenderer;
+import net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.util.math.BlockPos;
 import net.minecraftforge.client.ForgeHooksClient;
-import net.minecraftforge.client.model.pipeline.ForgeBlockModelRenderer;
+import net.minecraftforge.client.model.data.EmptyModelData;
 
 import java.util.Random;
 
-public class PipeRenderer implements BlockEntityRenderer<PipeBlockEntity> {
+public class PipeRenderer extends TileEntityRenderer<PipeTileEntity> {
 
     private final Random random = new Random();
 
-    public PipeRenderer(BlockEntityRendererProvider.Context ctx) {
+    public PipeRenderer(TileEntityRendererDispatcher disp) {
+        super(disp);
     }
 
     @Override
-    public void render(PipeBlockEntity tile, float partialTicks, PoseStack matrixStack, MultiBufferSource source, int light, int overlay) {
+    public void render(PipeTileEntity tile, float partialTicks, MatrixStack matrixStack, IRenderTypeBuffer buffer, int light, int overlay) {
         if (!tile.getItems().isEmpty()) {
-            matrixStack.pushPose();
+            matrixStack.push();
-            var tilePos = tile.getBlockPos();
+            BlockPos tilePos = tile.getPos();
             matrixStack.translate(-tilePos.getX(), -tilePos.getY(), -tilePos.getZ());
-            for (var item : tile.getItems()) {
+            for (IPipeItem item : tile.getItems()) {
-                matrixStack.pushPose();
+                matrixStack.push();
-                item.render(tile, matrixStack, this.random, partialTicks, light, overlay, source);
+                item.render(tile, matrixStack, this.random, partialTicks, light, overlay, buffer);
-                matrixStack.popPose();
+                matrixStack.pop();
             }
-            matrixStack.popPose();
+            matrixStack.pop();
         }
         if (tile.cover != null) {
-            matrixStack.pushPose();
+            matrixStack.push();
-            ForgeBlockModelRenderer.enableCaching();
+            BlockModelRenderer.enableCache();
-            var renderer = Minecraft.getInstance().getBlockRenderer();
+            for (RenderType layer : RenderType.getBlockRenderTypes()) {
-            for (var layer : RenderType.chunkBufferLayers()) {
+                if (!RenderTypeLookup.canRenderInLayer(tile.cover, layer))
-                if (!ItemBlockRenderTypes.canRenderInLayer(tile.cover, layer))
                     continue;
-                ForgeHooksClient.setRenderType(layer);
+                ForgeHooksClient.setRenderLayer(layer);
-                renderer.getModelRenderer().tesselateBlock(tile.getLevel(), renderer.getBlockModel(tile.cover), tile.cover, tile.getBlockPos(), matrixStack, source.getBuffer(layer), true, new Random(), tile.cover.getSeed(tile.getBlockPos()), overlay);
+                Minecraft.getInstance().getBlockRendererDispatcher().renderBlock(tile.cover, matrixStack, buffer, light, overlay, EmptyModelData.INSTANCE);
             }
-            ForgeHooksClient.setRenderType(null);
+            ForgeHooksClient.setRenderLayer(null);
-            ForgeBlockModelRenderer.clearCache();
+            BlockModelRenderer.disableCache();
-            matrixStack.popPose();
+            matrixStack.pop();
         }
     }
-
 }

src/main/java/de/ellpeck/prettypipes/pipe/PipeTileEntity.java

@@ -10,32 +10,38 @@ import de.ellpeck.prettypipes.network.NetworkLock;
 import de.ellpeck.prettypipes.network.PipeNetwork;
 import de.ellpeck.prettypipes.pipe.containers.MainPipeContainer;
 import de.ellpeck.prettypipes.pressurizer.PressurizerBlockEntity;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
 import net.minecraft.core.BlockPos;
-import net.minecraft.core.Direction;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.player.PlayerInventory;
+import net.minecraft.inventory.container.Container;
+import net.minecraft.inventory.container.INamedContainerProvider;
+import net.minecraft.item.Item;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.ListTag;
 import net.minecraft.nbt.NbtUtils;
-import net.minecraft.nbt.Tag;
-import net.minecraft.network.Connection;
-import net.minecraft.network.chat.Component;
-import net.minecraft.network.chat.TranslatableComponent;
-import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.world.Containers;
-import net.minecraft.world.InteractionHand;
-import net.minecraft.world.MenuProvider;
-import net.minecraft.world.entity.player.Inventory;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.inventory.AbstractContainerMenu;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.Level;
+import net.minecraft.nbt.ListTag;
-import net.minecraft.world.level.block.Block;
+import net.minecraft.nbt.NBTUtil;
+import net.minecraft.network.NetworkManager;
+import net.minecraft.network.play.server.SUpdateTileEntityPacket;
+import net.minecraft.profiler.IProfiler;
+import net.minecraft.tileentity.ITickableTileEntity;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.tileentity.TileEntityType;
+import net.minecraft.util.Direction;
+import net.minecraft.util.Hand;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.TranslationTextComponent;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.phys.AABB;
+import net.minecraft.world.server.ServerWorld;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.common.capabilities.Capability;
+import net.minecraftforge.common.util.Constants.NBT;
 import net.minecraftforge.common.util.Lazy;
 import net.minecraftforge.common.util.LazyOptional;
 import net.minecraftforge.items.CapabilityItemHandler;
@@ -51,7 +57,7 @@ import java.util.function.Consumer;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeConnectable {
+public class PipeTileEntity extends BlockEntity implements INamedContainerProvider, ITickableTileEntity, IPipeConnectable {
 
     public final ItemStackHandler modules = new ItemStackHandler(3) {
         @Override
@@ -59,7 +65,7 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
             var item = stack.getItem();
             if (!(item instanceof IModule module))
                 return false;
-            return PipeBlockEntity.this.streamModules().allMatch(m -> module.isCompatible(stack, PipeBlockEntity.this, m.getRight()) && m.getRight().isCompatible(m.getLeft(), PipeBlockEntity.this, module));
+            return PipeTileEntity.this.streamModules().allMatch(m -> module.isCompatible(stack, PipeTileEntity.this, m.getRight()) && m.getRight().isCompatible(m.getLeft(), PipeTileEntity.this, module));
         }
 
         @Override
@@ -75,13 +81,9 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     protected List<IPipeItem> items;
     private int lastItemAmount;
     private int priority;
-    private final LazyOptional<PipeBlockEntity> lazyThis = LazyOptional.of(() -> this);
+    private final LazyOptional<PipeTileEntity> lazyThis = LazyOptional.of(() -> this);
     private final Lazy<Integer> workRandomizer = Lazy.of(() -> this.level.random.nextInt(200));
 
-    public PipeBlockEntity(BlockPos pos, BlockState state) {
-        super(Registry.pipeBlockEntity, pos, state);
-    }
-
     @Override
     public void onChunkUnloaded() {
         PipeNetwork.get(this.level).uncachePipe(this.worldPosition);
@@ -94,9 +96,9 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
         compound.put("requests", Utility.serializeAll(this.craftIngredientRequests));
         if (this.cover != null)
             compound.put("cover", NbtUtils.writeBlockState(this.cover));
-        var results = new ListTag();
+        ListTag results = new ListTag();
-        for (var triple : this.craftResultRequests) {
+        for (Pair<BlockPos, ItemStack> triple : this.craftResultRequests) {
-            var nbt = new CompoundTag();
+            CompoundTag nbt = new CompoundTag();
             nbt.putLong("dest_pipe", triple.getLeft().asLong());
             nbt.put("item", triple.getRight().serializeNBT());
             results.add(nbt);
@@ -111,11 +113,11 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
         this.moduleDropCheck = compound.getInt("module_drop_check");
         this.cover = compound.contains("cover") ? NbtUtils.readBlockState(compound.getCompound("cover")) : null;
         this.craftIngredientRequests.clear();
-        this.craftIngredientRequests.addAll(Utility.deserializeAll(compound.getList("requests", Tag.TAG_COMPOUND), NetworkLock::new));
+        this.craftIngredientRequests.addAll(Utility.deserializeAll(compound.getList("requests", NBT.TAG_COMPOUND), NetworkLock::new));
         this.craftResultRequests.clear();
-        var results = compound.getList("craft_results", Tag.TAG_COMPOUND);
+        ListTag results = compound.getList("craft_results", NBT.TAG_COMPOUND);
-        for (var i = 0; i < results.size(); i++) {
+        for (int i = 0; i < results.size(); i++) {
-            var nbt = results.getCompound(i);
+            CompoundTag nbt = results.getCompound(i);
             this.craftResultRequests.add(Pair.of(
                     BlockPos.of(nbt.getLong("dest_pipe")),
                     ItemStack.of(nbt.getCompound("item"))));
@@ -126,27 +128,72 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     @Override
     public CompoundTag getUpdateTag() {
         // sync pipe items on load
-        var nbt = this.save(new CompoundTag());
+        CompoundTag nbt = this.write(new CompoundTag());
         nbt.put("items", Utility.serializeAll(this.getItems()));
         return nbt;
     }
 
     @Override
-    public void handleUpdateTag(CompoundTag nbt) {
+    public void handleUpdateTag(BlockState state, CompoundTag nbt) {
-        this.load(nbt);
+        this.read(state, nbt);
-        var items = this.getItems();
+        List<IPipeItem> items = this.getItems();
         items.clear();
-        items.addAll(Utility.deserializeAll(nbt.getList("items", Tag.TAG_COMPOUND), IPipeItem::load));
+        items.addAll(Utility.deserializeAll(nbt.getList("items", NBT.TAG_COMPOUND), IPipeItem::load));
     }
 
     @Override
-    public void onDataPacket(Connection net, ClientboundBlockEntityDataPacket pkt) {
+    public void onDataPacket(NetworkManager net, SUpdateTileEntityPacket pkt) {
-        this.load(pkt.getTag());
+        this.read(this.getBlockState(), pkt.getNbtCompound());
+    }
+
+    @Override
+    public void tick() {
+        // invalidate our pressurizer reference if it was removed
+        if (this.pressurizer != null && this.pressurizer.isRemoved())
+            this.pressurizer = null;
+
+        if (!this.world.isAreaLoaded(this.pos, 1))
+            return;
+        IProfiler profiler = this.world.getProfiler();
+
+        if (!this.world.isRemote) {
+            // drop modules here to give a bit of time for blocks to update (iron -> gold chest etc.)
+            if (this.moduleDropCheck > 0) {
+                this.moduleDropCheck--;
+                if (this.moduleDropCheck <= 0 && !this.canHaveModules())
+                    Utility.dropInventory(this, this.modules);
+            }
+
+            profiler.startSection("ticking_modules");
+            int prio = 0;
+            Iterator<Pair<ItemStack, IModule>> modules = this.streamModules().iterator();
+            while (modules.hasNext()) {
+                Pair<ItemStack, IModule> module = modules.next();
+                module.getRight().tick(module.getLeft(), this);
+                prio += module.getRight().getPriority(module.getLeft(), this);
+            }
+            if (prio != this.priority) {
+                this.priority = prio;
+                // clear the cache so that it's reevaluated based on priority
+                PipeNetwork.get(this.world).clearDestinationCache(this.pos);
+            }
+            profiler.endSection();
+        }
+
+        profiler.startSection("ticking_items");
+        List<IPipeItem> items = this.getItems();
+        for (int i = items.size() - 1; i >= 0; i--)
+            items.get(i).updateInPipe(this);
+        if (items.size() != this.lastItemAmount) {
+            this.lastItemAmount = items.size();
+            this.world.updateComparatorOutputLevel(this.pos, this.getBlockState().getBlock());
+        }
+        profiler.endSection();
     }
 
     public List<IPipeItem> getItems() {
         if (this.items == null)
-            this.items = PipeNetwork.get(this.level).getItemsInPipe(this.worldPosition);
+            this.items = PipeNetwork.get(this.world).getItemsInPipe(this.pos);
         return this.items;
     }
 
@@ -159,23 +206,23 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     }
 
     public boolean isConnected(Direction dir) {
-        return this.getBlockState().getValue(PipeBlock.DIRECTIONS.get(dir)).isConnected();
+        return this.getBlockState().get(PipeBlock.DIRECTIONS.get(dir)).isConnected();
     }
 
     public Pair<BlockPos, ItemStack> getAvailableDestinationOrConnectable(ItemStack stack, boolean force, boolean preventOversending) {
-        var dest = this.getAvailableDestination(stack, force, preventOversending);
+        Pair<BlockPos, ItemStack> dest = this.getAvailableDestination(stack, force, preventOversending);
         if (dest != null)
             return dest;
         // if there's no available destination, try inserting into terminals etc.
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var connectable = this.getPipeConnectable(dir);
+            IPipeConnectable connectable = this.getPipeConnectable(dir);
             if (connectable == null)
                 continue;
-            var connectableRemain = connectable.insertItem(this.worldPosition, dir, stack, true);
+            ItemStack connectableRemain = connectable.insertItem(this.getPos(), dir, stack, true);
             if (connectableRemain.getCount() != stack.getCount()) {
-                var inserted = stack.copy();
+                ItemStack inserted = stack.copy();
                 inserted.shrink(connectableRemain.getCount());
-                return Pair.of(this.worldPosition.relative(dir), inserted);
+                return Pair.of(this.getPos().offset(dir), inserted);
             }
         }
         return null;
@@ -186,47 +233,47 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
             return null;
         if (!force && this.streamModules().anyMatch(m -> !m.getRight().canAcceptItem(m.getLeft(), this, stack)))
             return null;
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var handler = this.getItemHandler(dir);
+            IItemHandler handler = this.getItemHandler(dir);
             if (handler == null)
                 continue;
-            var remain = ItemHandlerHelper.insertItem(handler, stack, true);
+            ItemStack remain = ItemHandlerHelper.insertItem(handler, stack, true);
             // did we insert anything?
             if (remain.getCount() == stack.getCount())
                 continue;
-            var toInsert = stack.copy();
+            ItemStack toInsert = stack.copy();
             toInsert.shrink(remain.getCount());
             // limit to the max amount that modules allow us to insert
-            var maxAmount = this.streamModules().mapToInt(m -> m.getRight().getMaxInsertionAmount(m.getLeft(), this, stack, handler)).min().orElse(Integer.MAX_VALUE);
+            int maxAmount = this.streamModules().mapToInt(m -> m.getRight().getMaxInsertionAmount(m.getLeft(), this, stack, handler)).min().orElse(Integer.MAX_VALUE);
             if (maxAmount < toInsert.getCount())
                 toInsert.setCount(maxAmount);
-            var offset = this.worldPosition.relative(dir);
+            BlockPos offset = this.pos.offset(dir);
             if (preventOversending || maxAmount < Integer.MAX_VALUE) {
-                var network = PipeNetwork.get(this.level);
+                PipeNetwork network = PipeNetwork.get(this.world);
                 // these are the items that are currently in the pipes, going to this inventory
-                var onTheWay = network.getItemsOnTheWay(offset, null);
+                int onTheWay = network.getItemsOnTheWay(offset, null);
                 if (onTheWay > 0) {
                     if (maxAmount < Integer.MAX_VALUE) {
                         // these are the items on the way, limited to items of the same type as stack
-                        var onTheWaySame = network.getItemsOnTheWay(offset, stack);
+                        int onTheWaySame = network.getItemsOnTheWay(offset, stack);
                         // check if any modules are limiting us
                         if (toInsert.getCount() + onTheWaySame > maxAmount)
                             toInsert.setCount(maxAmount - onTheWaySame);
                     }
                     // totalSpace will be the amount of items that fit into the attached container
-                    var totalSpace = 0;
+                    int totalSpace = 0;
-                    for (var i = 0; i < handler.getSlots(); i++) {
+                    for (int i = 0; i < handler.getSlots(); i++) {
-                        var copy = stack.copy();
+                        ItemStack copy = stack.copy();
-                        var maxStackSize = copy.getMaxStackSize();
+                        int maxStackSize = copy.getMaxStackSize();
                         // if the container can store more than 64 items in this slot, then it's likely
                         // a barrel or similar, meaning that the slot limit matters more than the max stack size
-                        var limit = handler.getSlotLimit(i);
+                        int limit = handler.getSlotLimit(i);
                         if (limit > 64)
                             maxStackSize = limit;
                         copy.setCount(maxStackSize);
                         // this is an inaccurate check since it ignores the fact that some slots might
                         // have space for items of other types, but it'll be good enough for us
-                        var left = handler.insertItem(i, copy, true);
+                        ItemStack left = handler.insertItem(i, copy, true);
                         totalSpace += maxStackSize - left.getCount();
                     }
                     // if the items on the way plus the items we're trying to move are too much, reduce
@@ -246,8 +293,8 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     }
 
     public float getItemSpeed(ItemStack stack) {
-        var moduleSpeed = (float) this.streamModules().mapToDouble(m -> m.getRight().getItemSpeedIncrease(m.getLeft(), this)).sum();
+        float moduleSpeed = (float) this.streamModules().mapToDouble(m -> m.getRight().getItemSpeedIncrease(m.getLeft(), this)).sum();
-        var pressureSpeed = this.pressurizer != null && this.pressurizer.pressurizeItem(stack, true) ? 0.45F : 0;
+        float pressureSpeed = this.pressurizer != null && this.pressurizer.pressurizeItem(stack, true) ? 0.45F : 0;
         return 0.05F + moduleSpeed + pressureSpeed;
     }
 
@@ -262,13 +309,13 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     }
 
     public int getCraftableAmount(Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
-        var total = 0;
+        int total = 0;
-        var modules = this.streamModules().iterator();
+        Iterator<Pair<ItemStack, IModule>> modules = this.streamModules().iterator();
         while (modules.hasNext()) {
-            var module = modules.next();
+            Pair<ItemStack, IModule> module = modules.next();
             // make sure we don't factor in recursive dependencies like ingot -> block -> ingot etc.
             if (dependencyChain.stream().noneMatch(d -> ItemEquality.compareItems(module.getLeft(), d, ItemEquality.NBT))) {
-                var amount = module.getRight().getCraftableAmount(module.getLeft(), this, unavailableConsumer, stack, dependencyChain);
+                int amount = module.getRight().getCraftableAmount(module.getLeft(), this, unavailableConsumer, stack, dependencyChain);
                 if (amount > 0)
                     total += amount;
             }
@@ -277,9 +324,9 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     }
 
     public ItemStack craft(BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
-        var modules = this.streamModules().iterator();
+        Iterator<Pair<ItemStack, IModule>> modules = this.streamModules().iterator();
         while (modules.hasNext()) {
-            var module = modules.next();
+            Pair<ItemStack, IModule> module = modules.next();
             stack = module.getRight().craft(module.getLeft(), this, destPipe, unavailableConsumer, stack, dependencyChain);
             if (stack.isEmpty())
                 break;
@@ -288,24 +335,24 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     }
 
     public IItemHandler getItemHandler(Direction dir) {
-        var handler = this.getNeighborCap(dir, CapabilityItemHandler.ITEM_HANDLER_CAPABILITY);
+        IItemHandler handler = this.getNeighborCap(dir, CapabilityItemHandler.ITEM_HANDLER_CAPABILITY);
         if (handler != null)
             return handler;
-        return Utility.getBlockItemHandler(this.level, this.worldPosition.relative(dir), dir.getOpposite());
+        return Utility.getBlockItemHandler(this.world, this.pos.offset(dir), dir.getOpposite());
     }
 
     public <T> T getNeighborCap(Direction dir, Capability<T> cap) {
         if (!this.isConnected(dir))
             return null;
-        var pos = this.worldPosition.relative(dir);
+        BlockPos pos = this.pos.offset(dir);
-        var tile = this.level.getBlockEntity(pos);
+        TileEntity tile = this.world.getTileEntity(pos);
         if (tile != null)
             return tile.getCapability(cap, dir.getOpposite()).orElse(null);
         return null;
     }
 
     public IPipeConnectable getPipeConnectable(Direction dir) {
-        var tile = this.level.getBlockEntity(this.worldPosition.relative(dir));
+        TileEntity tile = this.world.getTileEntity(this.pos.offset(dir));
         if (tile != null)
             return tile.getCapability(Registry.pipeConnectableCapability, dir.getOpposite()).orElse(null);
         return null;
@@ -316,11 +363,11 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     }
 
     public boolean canHaveModules() {
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
             if (this.isConnectedInventory(dir))
                 return true;
-            var connectable = this.getPipeConnectable(dir);
+            IPipeConnectable connectable = this.getPipeConnectable(dir);
-            if (connectable != null && connectable.allowsModules(this.worldPosition, dir))
+            if (connectable != null && connectable.allowsModules(this.pos, dir))
                 return true;
         }
         return false;
@@ -332,8 +379,8 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
 
     public Stream<Pair<ItemStack, IModule>> streamModules() {
         Stream.Builder<Pair<ItemStack, IModule>> builder = Stream.builder();
-        for (var i = 0; i < this.modules.getSlots(); i++) {
+        for (int i = 0; i < this.modules.getSlots(); i++) {
-            var stack = this.modules.getStackInSlot(i);
+            ItemStack stack = this.modules.getStackInSlot(i);
             if (stack.isEmpty())
                 continue;
             builder.accept(Pair.of(stack, (IModule) stack.getItem()));
@@ -341,17 +388,17 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
         return builder.build();
     }
 
-    public void removeCover(Player player, InteractionHand hand) {
+    public void removeCover(PlayerEntity player, Hand hand) {
-        if (this.level.isClientSide)
+        if (this.world.isRemote)
             return;
-        var drops = Block.getDrops(this.cover, (ServerLevel) this.level, this.worldPosition, null, player, player.getItemInHand(hand));
+        List<ItemStack> drops = Block.getDrops(this.cover, (ServerWorld) this.world, this.pos, null, player, player.getHeldItem(hand));
-        for (var drop : drops)
+        for (ItemStack drop : drops)
-            Containers.dropItemStack(this.level, this.worldPosition.getX(), this.worldPosition.getY(), this.worldPosition.getZ(), drop);
+            Block.spawnAsEntity(this.world, this.pos, drop);
         this.cover = null;
     }
 
     public boolean shouldWorkNow(int speed) {
-        return (this.level.getGameTime() + this.workRandomizer.get()) % speed == 0;
+        return (this.world.getGameTime() + this.workRandomizer.get()) % speed == 0;
     }
 
     public int getNextNode(List<BlockPos> nodes, int index) {
@@ -367,31 +414,31 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
     }
 
     @Override
-    public void setRemoved() {
+    public void remove() {
-        super.setRemoved();
+        super.remove();
         this.getItems().clear();
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
-        for (var lock : this.craftIngredientRequests)
+        for (NetworkLock lock : this.craftIngredientRequests)
             network.resolveNetworkLock(lock);
         this.lazyThis.invalidate();
     }
 
     @Override
-    public Component getDisplayName() {
+    public ITextComponent getDisplayName() {
-        return new TranslatableComponent("container." + PrettyPipes.ID + ".pipe");
+        return new TranslationTextComponent("container." + PrettyPipes.ID + ".pipe");
     }
 
     @Nullable
     @Override
-    public AbstractContainerMenu createMenu(int window, Inventory inv, Player player) {
+    public Container createMenu(int window, PlayerInventory inv, PlayerEntity player) {
-        return new MainPipeContainer(Registry.pipeContainer, window, player, PipeBlockEntity.this.worldPosition);
+        return new MainPipeContainer(Registry.pipeContainer, window, player, PipeTileEntity.this.pos);
     }
 
     @Override
     @OnlyIn(Dist.CLIENT)
-    public AABB getRenderBoundingBox() {
+    public AxisAlignedBB getRenderBoundingBox() {
         // our render bounding box should always be the full block in case we're covered
-        return new AABB(this.worldPosition);
+        return new AxisAlignedBB(this.pos);
     }
 
     @Override
@@ -403,54 +450,9 @@ public class PipeBlockEntity extends BlockEntity implements MenuProvider, IPipeC
 
     @Override
     public ConnectionType getConnectionType(BlockPos pipePos, Direction direction) {
-        var state = this.level.getBlockState(pipePos.relative(direction));
+        BlockState state = this.world.getBlockState(pipePos.offset(direction));
-        if (state.getValue(PipeBlock.DIRECTIONS.get(direction.getOpposite())) == ConnectionType.BLOCKED)
+        if (state.get(PipeBlock.DIRECTIONS.get(direction.getOpposite())) == ConnectionType.BLOCKED)
             return ConnectionType.BLOCKED;
         return ConnectionType.CONNECTED;
     }
-
-    public static void tick(Level level, BlockPos pos, BlockState state, PipeBlockEntity pipe) {
-        // invalidate our pressurizer reference if it was removed
-        if (pipe.pressurizer != null && pipe.pressurizer.isRemoved())
-            pipe.pressurizer = null;
-
-        if (!pipe.level.isAreaLoaded(pipe.worldPosition, 1))
-            return;
-        var profiler = pipe.level.getProfiler();
-
-        if (!pipe.level.isClientSide) {
-            // drop modules here to give a bit of time for blocks to update (iron -> gold chest etc.)
-            if (pipe.moduleDropCheck > 0) {
-                pipe.moduleDropCheck--;
-                if (pipe.moduleDropCheck <= 0 && !pipe.canHaveModules())
-                    Utility.dropInventory(pipe, pipe.modules);
-            }
-
-            profiler.push("ticking_modules");
-            var prio = 0;
-            var modules = pipe.streamModules().iterator();
-            while (modules.hasNext()) {
-                var module = modules.next();
-                module.getRight().tick(module.getLeft(), pipe);
-                prio += module.getRight().getPriority(module.getLeft(), pipe);
-            }
-            if (prio != pipe.priority) {
-                pipe.priority = prio;
-                // clear the cache so that it's reevaluated based on priority
-                PipeNetwork.get(pipe.level).clearDestinationCache(pipe.worldPosition);
-            }
-            profiler.pop();
-        }
-
-        profiler.push("ticking_items");
-        var items = pipe.getItems();
-        for (var i = items.size() - 1; i >= 0; i--)
-            items.get(i).updateInPipe(pipe);
-        if (items.size() != pipe.lastItemAmount) {
-            pipe.lastItemAmount = items.size();
-            pipe.level.updateNeighbourForOutputSignal(pipe.worldPosition, pipe.getBlockState().getBlock());
-        }
-        profiler.pop();
-    }
-
 }

src/main/java/de/ellpeck/prettypipes/pipe/containers/AbstractPipeContainer.java

@@ -3,28 +3,28 @@ package de.ellpeck.prettypipes.pipe.containers;
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.misc.FilterSlot;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ClickType;
-import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.inventory.container.Container;
-import net.minecraft.world.inventory.ClickType;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.inventory.container.Slot;
-import net.minecraft.world.inventory.Slot;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
 import org.apache.commons.lang3.tuple.Pair;
 
 import javax.annotation.Nullable;
 
-public abstract class AbstractPipeContainer<T extends IModule> extends AbstractContainerMenu {
+public abstract class AbstractPipeContainer<T extends IModule> extends Container {
 
-    public final PipeBlockEntity tile;
+    public final PipeTileEntity tile;
     public final T module;
     public final int moduleIndex;
     public final ItemStack moduleStack;
 
-    public AbstractPipeContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
+    public AbstractPipeContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
         super(type, id);
-        this.tile = Utility.getBlockEntity(PipeBlockEntity.class, player.level, pos);
+        this.tile = Utility.getBlockEntity(PipeTileEntity.class, player.world, pos);
         this.moduleStack = moduleIndex < 0 ? null : this.tile.modules.getStackInSlot(moduleIndex);
         this.module = moduleIndex < 0 ? null : (T) this.moduleStack.getItem();
         this.moduleIndex = moduleIndex;
@@ -32,18 +32,23 @@ public abstract class AbstractPipeContainer<T extends IModule> extends AbstractC
         // needs to be done here so transferStackInSlot works correctly, bleh
         this.addSlots();
 
-        for (var l = 0; l < 3; ++l)
+        for (int l = 0; l < 3; ++l)
-            for (var j1 = 0; j1 < 9; ++j1)
+            for (int j1 = 0; j1 < 9; ++j1)
-                this.addSlot(new Slot(player.getInventory(), j1 + l * 9 + 9, 8 + j1 * 18, 89 + l * 18 + 32));
+                this.addSlot(new Slot(player.inventory, j1 + l * 9 + 9, 8 + j1 * 18, 89 + l * 18 + 32));
-        for (var i1 = 0; i1 < 9; ++i1)
+        for (int i1 = 0; i1 < 9; ++i1)
-            this.addSlot(new Slot(player.getInventory(), i1, 8 + i1 * 18, 147 + 32));
+            this.addSlot(new Slot(player.inventory, i1, 8 + i1 * 18, 147 + 32));
     }
 
     protected abstract void addSlots();
 
     @Override
-    public ItemStack quickMoveStack(Player player, int slotIndex) {
+    public boolean canInteractWith(PlayerEntity playerIn) {
-        return Utility.transferStackInSlot(this, this::moveItemStackTo, player, slotIndex, stack -> {
+        return true;
+    }
+
+    @Override
+    public ItemStack transferStackInSlot(PlayerEntity player, int slotIndex) {
+        return Utility.transferStackInSlot(this, this::mergeItemStack, player, slotIndex, stack -> {
             if (stack.getItem() instanceof IModule)
                 return Pair.of(0, 3);
             return null;
@@ -51,14 +56,9 @@ public abstract class AbstractPipeContainer<T extends IModule> extends AbstractC
     }
 
     @Override
-    public void clicked(int slotId, int dragType, ClickType clickTypeIn, Player player) {
+    public ItemStack slotClick(int slotId, int dragType, ClickType clickTypeIn, PlayerEntity player) {
         if (FilterSlot.checkFilter(this, slotId, player))
-            return;
+            return ItemStack.EMPTY;
-        super.clicked(slotId, dragType, clickTypeIn, player);
+        return super.slotClick(slotId, dragType, clickTypeIn, player);
-    }
-
-    @Override
-    public boolean stillValid(Player player) {
-        return true;
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/containers/AbstractPipeGui.java

@@ -1,34 +1,34 @@
 package de.ellpeck.prettypipes.pipe.containers;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
 import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.packets.PacketButton;
 import de.ellpeck.prettypipes.packets.PacketHandler;
-import net.minecraft.client.gui.components.AbstractWidget;
+import net.minecraft.client.audio.SimpleSound;
-import net.minecraft.client.gui.screens.inventory.AbstractContainerScreen;
+import net.minecraft.client.gui.screen.inventory.ContainerScreen;
-import net.minecraft.client.resources.sounds.SimpleSoundInstance;
+import net.minecraft.client.gui.widget.Widget;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.resources.ResourceLocation;
+import net.minecraft.inventory.container.Slot;
-import net.minecraft.sounds.SoundEvents;
-import net.minecraft.world.entity.player.Inventory;
 import net.minecraft.world.item.ItemStack;
-import net.minecraftforge.items.SlotItemHandler;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.util.SoundEvents;
+import net.minecraft.util.text.ITextComponent;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public abstract class AbstractPipeGui<T extends AbstractPipeContainer<?>> extends AbstractContainerScreen<T> {
+public abstract class AbstractPipeGui<T extends AbstractPipeContainer<?>> extends ContainerScreen<T> {
 
     protected static final ResourceLocation TEXTURE = new ResourceLocation(PrettyPipes.ID, "textures/gui/pipe.png");
     private final List<Tab> tabs = new ArrayList<>();
-    private final ItemStack[] lastItems = new ItemStack[this.menu.tile.modules.getSlots()];
+    private final ItemStack[] lastItems = new ItemStack[this.container.tile.modules.getSlots()];
 
-    public AbstractPipeGui(T screenContainer, Inventory inv, Component titleIn) {
+    public AbstractPipeGui(T screenContainer, PlayerInventory inv, ITextComponent titleIn) {
         super(screenContainer, inv, titleIn);
-        this.imageWidth = 176;
+        this.xSize = 176;
-        this.imageHeight = 171 + 32;
+        this.ySize = 171 + 32;
     }
 
     @Override
@@ -38,12 +38,12 @@ public abstract class AbstractPipeGui<T extends AbstractPipeContainer<?>> extend
     }
 
     @Override
-    public void containerTick() {
+    public void tick() {
-        super.containerTick();
+        super.tick();
 
-        var changed = false;
+        boolean changed = false;
-        for (var i = 0; i < this.menu.tile.modules.getSlots(); i++) {
+        for (int i = 0; i < this.container.tile.modules.getSlots(); i++) {
-            var stack = this.menu.tile.modules.getStackInSlot(i);
+            ItemStack stack = this.container.tile.modules.getStackInSlot(i);
             if (stack != this.lastItems[i]) {
                 this.lastItems[i] = stack;
                 changed = true;
@@ -54,44 +54,43 @@ public abstract class AbstractPipeGui<T extends AbstractPipeContainer<?>> extend
     }
 
     @Override
-    public void render(PoseStack matrix, int mouseX, int mouseY, float partialTicks) {
+    public void render(MatrixStack matrix, int mouseX, int mouseY, float partialTicks) {
         this.renderBackground(matrix);
         super.render(matrix, mouseX, mouseY, partialTicks);
-        for (var widget : this.renderables) {
+        for (Widget widget : this.buttons) {
-            if (widget instanceof AbstractWidget abstractWidget) {
+            if (widget.isHovered())
-                if (abstractWidget.isHoveredOrFocused())
+                widget.renderToolTip(matrix, mouseX, mouseY);
-                    abstractWidget.renderToolTip(matrix, mouseX, mouseY);
-            }
         }
-        this.renderTooltip(matrix, mouseX, mouseY);
+        this.func_230459_a_(matrix, mouseX, mouseY);
     }
 
     @Override
-    protected void renderLabels(PoseStack matrix, int mouseX, int mouseY) {
+    protected void drawGuiContainerForegroundLayer(MatrixStack matrix, int mouseX, int mouseY) {
-        this.font.draw(matrix, this.playerInventoryTitle.getString(), 8, this.imageHeight - 96 + 2, 4210752);
+        this.font.drawString(matrix, this.playerInventory.getDisplayName().getString(), 8, this.ySize - 96 + 2, 4210752);
-        this.font.draw(matrix, this.title.getString(), 8, 6 + 32, 4210752);
+        this.font.drawString(matrix, this.title.getString(), 8, 6 + 32, 4210752);
-        for (var tab : this.tabs)
+        for (Tab tab : this.tabs)
             tab.drawForeground(matrix, mouseX, mouseY);
     }
 
     @Override
-    protected void renderBg(PoseStack matrix, float partialTicks, int mouseX, int mouseY) {
+    protected void drawGuiContainerBackgroundLayer(MatrixStack matrix, float partialTicks, int mouseX, int mouseY) {
-        this.getMinecraft().getTextureManager().bindForSetup(TEXTURE);
+        this.getMinecraft().getTextureManager().bindTexture(TEXTURE);
-        this.blit(matrix, this.leftPos, this.topPos + 32, 0, 0, 176, 171);
+        this.blit(matrix, this.guiLeft, this.guiTop + 32, 0, 0, 176, 171);
 
-        for (var tab : this.tabs)
+        for (Tab tab : this.tabs)
             tab.draw(matrix);
 
         // draw the slots since we're using a blank ui
-        for (var slot : this.menu.slots) {
+        for (Slot slot : this.container.inventorySlots) {
-            if (slot instanceof SlotItemHandler)
+            if (slot.inventory == this.playerInventory)
-                this.blit(matrix, this.leftPos + slot.x - 1, this.topPos + slot.y - 1, 176, 62, 18, 18);
+                continue;
+            this.blit(matrix, this.guiLeft + slot.xPos - 1, this.guiTop + slot.yPos - 1, 176, 62, 18, 18);
         }
     }
 
     @Override
     public boolean mouseClicked(double x, double y, int button) {
-        for (var tab : this.tabs) {
+        for (Tab tab : this.tabs) {
             if (tab.onClicked(x, y, button))
                 return true;
         }
@@ -101,18 +100,17 @@ public abstract class AbstractPipeGui<T extends AbstractPipeContainer<?>> extend
     private void initTabs() {
         this.tabs.clear();
         this.tabs.add(new Tab(new ItemStack(Registry.pipeBlock), 0, -1));
-        for (var i = 0; i < this.menu.tile.modules.getSlots(); i++) {
+        for (int i = 0; i < this.container.tile.modules.getSlots(); i++) {
-            var stack = this.menu.tile.modules.getStackInSlot(i);
+            ItemStack stack = this.container.tile.modules.getStackInSlot(i);
             if (stack.isEmpty())
                 continue;
-            var module = (IModule) stack.getItem();
+            IModule module = (IModule) stack.getItem();
-            if (module.hasContainer(stack, this.menu.tile))
+            if (module.hasContainer(stack, this.container.tile))
                 this.tabs.add(new Tab(stack, this.tabs.size(), i));
         }
     }
 
     private class Tab {
-
         private final ItemStack moduleStack;
         private final int index;
         private final int x;
@@ -121,16 +119,16 @@ public abstract class AbstractPipeGui<T extends AbstractPipeContainer<?>> extend
         public Tab(ItemStack moduleStack, int tabIndex, int index) {
             this.moduleStack = moduleStack;
             this.index = index;
-            this.x = AbstractPipeGui.this.leftPos + 5 + tabIndex * 28;
+            this.x = AbstractPipeGui.this.guiLeft + 5 + tabIndex * 28;
-            this.y = AbstractPipeGui.this.topPos;
+            this.y = AbstractPipeGui.this.guiTop;
         }
 
-        private void draw(PoseStack matrix) {
+        private void draw(MatrixStack matrix) {
-            var y = 2;
+            int y = 2;
-            var v = 0;
+            int v = 0;
-            var height = 30;
+            int height = 30;
-            var itemOffset = 9;
+            int itemOffset = 9;
-            if (this.index == AbstractPipeGui.this.menu.moduleIndex) {
+            if (this.index == AbstractPipeGui.this.container.moduleIndex) {
                 y = 0;
                 v = 30;
                 height = 32;
@@ -138,25 +136,25 @@ public abstract class AbstractPipeGui<T extends AbstractPipeContainer<?>> extend
             }
             AbstractPipeGui.this.blit(matrix, this.x, this.y + y, 176, v, 28, height);
 
-            AbstractPipeGui.this.itemRenderer.renderGuiItem(this.moduleStack, this.x + 6, this.y + itemOffset);
+            AbstractPipeGui.this.itemRenderer.renderItemIntoGUI(this.moduleStack, this.x + 6, this.y + itemOffset);
-            AbstractPipeGui.this.getMinecraft().getTextureManager().bindForSetup(TEXTURE);
+            AbstractPipeGui.this.getMinecraft().getTextureManager().bindTexture(TEXTURE);
         }
 
-        private void drawForeground(PoseStack matrix, int mouseX, int mouseY) {
+        private void drawForeground(MatrixStack matrix, int mouseX, int mouseY) {
             if (mouseX < this.x || mouseY < this.y || mouseX >= this.x + 28 || mouseY >= this.y + 32)
                 return;
-            AbstractPipeGui.this.renderTooltip(matrix, this.moduleStack.getDisplayName(), mouseX - AbstractPipeGui.this.leftPos, mouseY - AbstractPipeGui.this.topPos);
+            AbstractPipeGui.this.renderTooltip(matrix, this.moduleStack.getDisplayName(), mouseX - AbstractPipeGui.this.guiLeft, mouseY - AbstractPipeGui.this.guiTop);
         }
 
         private boolean onClicked(double mouseX, double mouseY, int button) {
-            if (this.index == AbstractPipeGui.this.menu.moduleIndex)
+            if (this.index == AbstractPipeGui.this.container.moduleIndex)
                 return false;
             if (button != 0)
                 return false;
             if (mouseX < this.x || mouseY < this.y || mouseX >= this.x + 28 || mouseY >= this.y + 32)
                 return false;
-            PacketHandler.sendToServer(new PacketButton(AbstractPipeGui.this.menu.tile.getBlockPos(), PacketButton.ButtonResult.PIPE_TAB, this.index));
+            PacketHandler.sendToServer(new PacketButton(AbstractPipeGui.this.container.tile.getPos(), PacketButton.ButtonResult.PIPE_TAB, this.index));
-            AbstractPipeGui.this.getMinecraft().getSoundManager().play(SimpleSoundInstance.forUI(SoundEvents.UI_BUTTON_CLICK, 1));
+            AbstractPipeGui.this.getMinecraft().getSoundHandler().play(SimpleSound.master(SoundEvents.UI_BUTTON_CLICK, 1));
             return true;
         }
     }

src/main/java/de/ellpeck/prettypipes/pipe/containers/MainPipeContainer.java

@@ -1,22 +1,21 @@
 package de.ellpeck.prettypipes.pipe.containers;
 
 import de.ellpeck.prettypipes.items.IModule;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.util.math.BlockPos;
 import net.minecraftforge.items.SlotItemHandler;
 
 import javax.annotation.Nullable;
 
 public class MainPipeContainer extends AbstractPipeContainer<IModule> {
-
+    public MainPipeContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos) {
-    public MainPipeContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos) {
         super(type, id, player, pos, -1);
     }
 
     @Override
     protected void addSlots() {
-        for (var i = 0; i < 3; i++)
+        for (int i = 0; i < 3; i++)
             this.addSlot(new SlotItemHandler(this.tile.modules, i, 62 + i * 18, 17 + 32));
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/containers/MainPipeGui.java

@@ -1,11 +1,10 @@
 package de.ellpeck.prettypipes.pipe.containers;
 
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
 
 public class MainPipeGui extends AbstractPipeGui<MainPipeContainer> {
-
+    public MainPipeGui(MainPipeContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
-    public MainPipeGui(MainPipeContainer screenContainer, Inventory inv, Component titleIn) {
         super(screenContainer, inv, titleIn);
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/HighPriorityModuleItem.java

@@ -3,7 +3,7 @@ package de.ellpeck.prettypipes.pipe.modules;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.items.ModuleTier;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import net.minecraft.world.item.ItemStack;
 
 public class HighPriorityModuleItem extends ModuleItem {
@@ -15,17 +15,17 @@ public class HighPriorityModuleItem extends ModuleItem {
     }
 
     @Override
-    public int getPriority(ItemStack module, PipeBlockEntity tile) {
+    public int getPriority(ItemStack module, PipeTileEntity tile) {
         return this.priority;
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof HighPriorityModuleItem) && !(other instanceof LowPriorityModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/LowPriorityModuleItem.java

@@ -3,7 +3,7 @@ package de.ellpeck.prettypipes.pipe.modules;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.items.ModuleTier;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import net.minecraft.world.item.ItemStack;
 
 public class LowPriorityModuleItem extends ModuleItem {
@@ -15,17 +15,17 @@ public class LowPriorityModuleItem extends ModuleItem {
     }
 
     @Override
-    public int getPriority(ItemStack module, PipeBlockEntity tile) {
+    public int getPriority(ItemStack module, PipeTileEntity tile) {
         return this.priority;
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof LowPriorityModuleItem) && !(other instanceof HighPriorityModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/RedstoneModuleItem.java

@@ -2,7 +2,7 @@ package de.ellpeck.prettypipes.pipe.modules;
 
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import net.minecraft.world.item.ItemStack;
 
 public class RedstoneModuleItem extends ModuleItem {
@@ -13,17 +13,17 @@ public class RedstoneModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean canPipeWork(ItemStack module, PipeBlockEntity tile) {
+    public boolean canPipeWork(ItemStack module, PipeTileEntity tile) {
-        return !tile.getLevel().hasNeighborSignal(tile.getBlockPos());
+        return !tile.getWorld().isBlockPowered(tile.getPos());
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return other != this;
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/SortingModuleItem.java

@@ -2,9 +2,9 @@ package de.ellpeck.prettypipes.pipe.modules;
 
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
-import net.minecraft.core.BlockPos;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
 
 import java.util.List;
 
@@ -19,25 +19,25 @@ public class SortingModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof SortingModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 
     @Override
-    public Integer getCustomNextNode(ItemStack module, PipeBlockEntity tile, List<BlockPos> nodes, int index) {
+    public Integer getCustomNextNode(ItemStack module, PipeTileEntity tile, List<BlockPos> nodes, int index) {
         switch (this.type) {
             case ROUND_ROBIN:
                 // store an ever-increasing index and choose destinations based on that
-                var next = module.hasTag() ? module.getTag().getInt("last") + 1 : 0;
+                int next = module.hasTag() ? module.getTag().getInt("last") + 1 : 0;
                 module.getOrCreateTag().putInt("last", next);
                 return next % nodes.size();
             case RANDOM:
-                return tile.getLevel().random.nextInt(nodes.size());
+                return tile.getWorld().rand.nextInt(nodes.size());
         }
         return null;
     }

src/main/java/de/ellpeck/prettypipes/pipe/modules/SpeedModuleItem.java

@@ -3,7 +3,7 @@ package de.ellpeck.prettypipes.pipe.modules;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.items.ModuleTier;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import net.minecraft.world.item.ItemStack;
 
 public class SpeedModuleItem extends ModuleItem {
@@ -15,17 +15,17 @@ public class SpeedModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof SpeedModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 
     @Override
-    public float getItemSpeedIncrease(ItemStack module, PipeBlockEntity tile) {
+    public float getItemSpeedIncrease(ItemStack module, PipeTileEntity tile) {
         return this.speedIncrease;
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/craft/CraftingModuleContainer.java

@@ -2,9 +2,9 @@ package de.ellpeck.prettypipes.pipe.modules.craft;
 
 import de.ellpeck.prettypipes.misc.FilterSlot;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.util.math.BlockPos;
 import net.minecraftforge.items.ItemStackHandler;
 
 public class CraftingModuleContainer extends AbstractPipeContainer<CraftingModuleItem> {
@@ -13,30 +13,29 @@ public class CraftingModuleContainer extends AbstractPipeContainer<CraftingModul
     public ItemStackHandler output;
     public boolean modified;
 
-    public CraftingModuleContainer(MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
+    public CraftingModuleContainer(ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
         super(type, id, player, pos, moduleIndex);
     }
 
     @Override
     protected void addSlots() {
         this.input = this.module.getInput(this.moduleStack);
-        for (var i = 0; i < this.input.getSlots(); i++) {
+        for (int i = 0; i < this.input.getSlots(); i++) {
             this.addSlot(new FilterSlot(this.input, i, (176 - this.module.inputSlots * 18) / 2 + 1 + i % 9 * 18, 17 + 32 + i / 9 * 18, false) {
                 @Override
-                public void setChanged() {
+                public void onSlotChanged() {
-                    super.setChanged();
+                    super.onSlotChanged();
                     CraftingModuleContainer.this.modified = true;
                 }
-
             });
         }
 
         this.output = this.module.getOutput(this.moduleStack);
-        for (var i = 0; i < this.output.getSlots(); i++) {
+        for (int i = 0; i < this.output.getSlots(); i++) {
             this.addSlot(new FilterSlot(this.output, i, (176 - this.module.outputSlots * 18) / 2 + 1 + i % 9 * 18, 85 + i / 9 * 18, false) {
                 @Override
-                public void setChanged() {
+                public void onSlotChanged() {
-                    super.setChanged();
+                    super.onSlotChanged();
                     CraftingModuleContainer.this.modified = true;
                 }
             });
@@ -44,8 +43,8 @@ public class CraftingModuleContainer extends AbstractPipeContainer<CraftingModul
     }
 
     @Override
-    public void removed(Player playerIn) {
+    public void onContainerClosed(PlayerEntity playerIn) {
-        super.removed(playerIn);
+        super.onContainerClosed(playerIn);
         if (this.modified)
             this.module.save(this.input, this.output, this.moduleStack);
     }

src/main/java/de/ellpeck/prettypipes/pipe/modules/craft/CraftingModuleGui.java

@@ -1,20 +1,19 @@
 package de.ellpeck.prettypipes.pipe.modules.craft;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeGui;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
 
 public class CraftingModuleGui extends AbstractPipeGui<CraftingModuleContainer> {
-
+    public CraftingModuleGui(CraftingModuleContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
-    public CraftingModuleGui(CraftingModuleContainer screenContainer, Inventory inv, Component titleIn) {
         super(screenContainer, inv, titleIn);
     }
 
     @Override
-    protected void renderBg(PoseStack matrix, float partialTicks, int mouseX, int mouseY) {
+    protected void drawGuiContainerBackgroundLayer(MatrixStack matrix, float partialTicks, int mouseX, int mouseY) {
-        super.renderBg(matrix, partialTicks, mouseX, mouseY);
+        super.drawGuiContainerBackgroundLayer(matrix, partialTicks, mouseX, mouseY);
-        this.getMinecraft().getTextureManager().bindForSetup(TEXTURE);
+        this.getMinecraft().getTextureManager().bindTexture(TEXTURE);
-        this.blit(matrix, this.leftPos + 176 / 2 - 16 / 2, this.topPos + 32 + 18 * 2, 176, 80, 16, 16);
+        this.blit(matrix, this.guiLeft + 176 / 2 - 16 / 2, this.guiTop + 32 + 18 * 2, 176, 80, 16, 16);
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/craft/CraftingModuleItem.java

@@ -6,17 +6,19 @@ import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.items.ModuleTier;
 import de.ellpeck.prettypipes.misc.ItemEquality;
 import de.ellpeck.prettypipes.misc.ItemFilter;
+import de.ellpeck.prettypipes.network.NetworkLocation;
 import de.ellpeck.prettypipes.network.NetworkLock;
 import de.ellpeck.prettypipes.network.PipeNetwork;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import de.ellpeck.prettypipes.terminal.CraftingTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.CraftingTerminalTileEntity;
-import de.ellpeck.prettypipes.terminal.ItemTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.ItemTerminalTileEntity;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.util.Mth;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Inventory;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
 import net.minecraftforge.items.ItemStackHandler;
 import org.apache.commons.lang3.tuple.Pair;
 
@@ -39,51 +41,51 @@ public class CraftingModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return true;
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
-        return new CraftingModuleContainer(Registry.craftingModuleContainer, windowId, player, tile.getBlockPos(), moduleIndex);
+        return new CraftingModuleContainer(Registry.craftingModuleContainer, windowId, player, tile.getPos(), moduleIndex);
     }
 
     @Override
-    public boolean canNetworkSee(ItemStack module, PipeBlockEntity tile) {
+    public boolean canNetworkSee(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 
     @Override
-    public boolean canAcceptItem(ItemStack module, PipeBlockEntity tile, ItemStack stack) {
+    public boolean canAcceptItem(ItemStack module, PipeTileEntity tile, ItemStack stack) {
         return false;
     }
 
     @Override
-    public void tick(ItemStack module, PipeBlockEntity tile) {
+    public void tick(ItemStack module, PipeTileEntity tile) {
         if (!tile.shouldWorkNow(this.speed) || !tile.canWork())
             return;
-        var network = PipeNetwork.get(tile.getLevel());
+        PipeNetwork network = PipeNetwork.get(tile.getWorld());
         // process crafting ingredient requests
         if (!tile.craftIngredientRequests.isEmpty()) {
             network.startProfile("crafting_ingredients");
-            var request = tile.craftIngredientRequests.peek();
+            NetworkLock request = tile.craftIngredientRequests.peek();
-            var equalityTypes = ItemFilter.getEqualityTypes(tile);
+            ItemEquality[] equalityTypes = ItemFilter.getEqualityTypes(tile);
-            var dest = tile.getAvailableDestination(request.stack, true, true);
+            Pair<BlockPos, ItemStack> dest = tile.getAvailableDestination(request.stack, true, true);
             if (dest != null) {
-                var requestRemain = network.requestExistingItem(request.location, tile.getBlockPos(), dest.getLeft(), request, dest.getRight(), equalityTypes);
+                ItemStack requestRemain = network.requestExistingItem(request.location, tile.getPos(), dest.getLeft(), request, dest.getRight(), equalityTypes);
                 network.resolveNetworkLock(request);
                 tile.craftIngredientRequests.remove();
 
                 // if we couldn't fit all items into the destination, create another request for the rest
-                var remain = request.stack.copy();
+                ItemStack remain = request.stack.copy();
                 remain.shrink(dest.getRight().getCount() - requestRemain.getCount());
                 if (!remain.isEmpty()) {
-                    var remainRequest = new NetworkLock(request.location, remain);
+                    NetworkLock remainRequest = new NetworkLock(request.location, remain);
                     tile.craftIngredientRequests.add(remainRequest);
                     network.createNetworkLock(remainRequest);
                 }
@@ -93,17 +95,17 @@ public class CraftingModuleItem extends ModuleItem {
         // pull requested crafting results from the network once they are stored
         if (!tile.craftResultRequests.isEmpty()) {
             network.startProfile("crafting_results");
-            var items = network.getOrderedNetworkItems(tile.getBlockPos());
+            List<NetworkLocation> items = network.getOrderedNetworkItems(tile.getPos());
-            var equalityTypes = ItemFilter.getEqualityTypes(tile);
+            ItemEquality[] equalityTypes = ItemFilter.getEqualityTypes(tile);
-            for (var request : tile.craftResultRequests) {
+            for (Pair<BlockPos, ItemStack> request : tile.craftResultRequests) {
-                var remain = request.getRight().copy();
+                ItemStack remain = request.getRight().copy();
-                var destPipe = network.getPipe(request.getLeft());
+                PipeTileEntity destPipe = network.getPipe(request.getLeft());
                 if (destPipe != null) {
-                    var dest = destPipe.getAvailableDestinationOrConnectable(remain, true, true);
+                    Pair<BlockPos, ItemStack> dest = destPipe.getAvailableDestinationOrConnectable(remain, true, true);
                     if (dest == null)
                         continue;
-                    for (var item : items) {
+                    for (NetworkLocation item : items) {
-                        var requestRemain = network.requestExistingItem(item, request.getLeft(), dest.getLeft(), null, dest.getRight(), equalityTypes);
+                        ItemStack requestRemain = network.requestExistingItem(item, request.getLeft(), dest.getLeft(), null, dest.getRight(), equalityTypes);
                         remain.shrink(dest.getRight().getCount() - requestRemain.getCount());
                         if (remain.isEmpty())
                             break;
@@ -123,11 +125,11 @@ public class CraftingModuleItem extends ModuleItem {
     }
 
     @Override
-    public List<ItemStack> getAllCraftables(ItemStack module, PipeBlockEntity tile) {
+    public List<ItemStack> getAllCraftables(ItemStack module, PipeTileEntity tile) {
         List<ItemStack> ret = new ArrayList<>();
-        var output = this.getOutput(module);
+        ItemStackHandler output = this.getOutput(module);
-        for (var i = 0; i < output.getSlots(); i++) {
+        for (int i = 0; i < output.getSlots(); i++) {
-            var stack = output.getStackInSlot(i);
+            ItemStack stack = output.getStackInSlot(i);
             if (!stack.isEmpty())
                 ret.add(stack);
         }
@@ -135,19 +137,19 @@ public class CraftingModuleItem extends ModuleItem {
     }
 
     @Override
-    public int getCraftableAmount(ItemStack module, PipeBlockEntity tile, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
+    public int getCraftableAmount(ItemStack module, PipeTileEntity tile, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
-        var network = PipeNetwork.get(tile.getLevel());
+        PipeNetwork network = PipeNetwork.get(tile.getWorld());
-        var items = network.getOrderedNetworkItems(tile.getBlockPos());
+        List<NetworkLocation> items = network.getOrderedNetworkItems(tile.getPos());
-        var equalityTypes = ItemFilter.getEqualityTypes(tile);
+        ItemEquality[] equalityTypes = ItemFilter.getEqualityTypes(tile);
-        var input = this.getInput(module);
+        ItemStackHandler input = this.getInput(module);
 
-        var craftable = 0;
+        int craftable = 0;
-        var output = this.getOutput(module);
+        ItemStackHandler output = this.getOutput(module);
-        for (var i = 0; i < output.getSlots(); i++) {
+        for (int i = 0; i < output.getSlots(); i++) {
-            var out = output.getStackInSlot(i);
+            ItemStack out = output.getStackInSlot(i);
             if (!out.isEmpty() && ItemEquality.compareItems(out, stack, equalityTypes)) {
                 // figure out how many crafting operations we can actually do with the input items we have in the network
-                var availableCrafts = CraftingTerminalBlockEntity.getAvailableCrafts(tile, input.getSlots(), input::getStackInSlot, k -> true, s -> items, unavailableConsumer, addDependency(dependencyChain, module), equalityTypes);
+                int availableCrafts = CraftingTerminalTileEntity.getAvailableCrafts(tile, input.getSlots(), input::getStackInSlot, k -> true, s -> items, unavailableConsumer, addDependency(dependencyChain, module), equalityTypes);
                 if (availableCrafts > 0)
                     craftable += out.getCount() * availableCrafts;
             }
@@ -156,35 +158,35 @@ public class CraftingModuleItem extends ModuleItem {
     }
 
     @Override
-    public ItemStack craft(ItemStack module, PipeBlockEntity tile, BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
+    public ItemStack craft(ItemStack module, PipeTileEntity tile, BlockPos destPipe, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain) {
         // check if we can craft the required amount of items
-        var craftableAmount = this.getCraftableAmount(module, tile, unavailableConsumer, stack, dependencyChain);
+        int craftableAmount = this.getCraftableAmount(module, tile, unavailableConsumer, stack, dependencyChain);
         if (craftableAmount <= 0)
             return stack;
 
-        var network = PipeNetwork.get(tile.getLevel());
+        PipeNetwork network = PipeNetwork.get(tile.getWorld());
-        var items = network.getOrderedNetworkItems(tile.getBlockPos());
+        List<NetworkLocation> items = network.getOrderedNetworkItems(tile.getPos());
 
-        var equalityTypes = ItemFilter.getEqualityTypes(tile);
+        ItemEquality[] equalityTypes = ItemFilter.getEqualityTypes(tile);
-        var resultAmount = this.getResultAmountPerCraft(module, stack, equalityTypes);
+        int resultAmount = this.getResultAmountPerCraft(module, stack, equalityTypes);
-        var requiredCrafts = Mth.ceil(stack.getCount() / (float) resultAmount);
+        int requiredCrafts = MathHelper.ceil(stack.getCount() / (float) resultAmount);
-        var toCraft = Math.min(craftableAmount, requiredCrafts);
+        int toCraft = Math.min(craftableAmount, requiredCrafts);
 
-        var input = this.getInput(module);
+        ItemStackHandler input = this.getInput(module);
-        for (var i = 0; i < input.getSlots(); i++) {
+        for (int i = 0; i < input.getSlots(); i++) {
-            var in = input.getStackInSlot(i);
+            ItemStack in = input.getStackInSlot(i);
             if (in.isEmpty())
                 continue;
-            var copy = in.copy();
+            ItemStack copy = in.copy();
             copy.setCount(in.getCount() * toCraft);
-            var ret = ItemTerminalBlockEntity.requestItemLater(tile.getLevel(), tile.getBlockPos(), items, unavailableConsumer, copy, addDependency(dependencyChain, module), equalityTypes);
+            Pair<List<NetworkLock>, ItemStack> ret = ItemTerminalTileEntity.requestItemLater(tile.getWorld(), tile.getPos(), items, unavailableConsumer, copy, addDependency(dependencyChain, module), equalityTypes);
             tile.craftIngredientRequests.addAll(ret.getLeft());
         }
 
-        var remain = stack.copy();
+        ItemStack remain = stack.copy();
         remain.shrink(resultAmount * toCraft);
 
-        var result = stack.copy();
+        ItemStack result = stack.copy();
         result.shrink(remain.getCount());
         tile.craftResultRequests.add(Pair.of(destPipe, result));
 
@@ -192,21 +194,21 @@ public class CraftingModuleItem extends ModuleItem {
     }
 
     public ItemStackHandler getInput(ItemStack module) {
-        var handler = new ItemStackHandler(this.inputSlots);
+        ItemStackHandler handler = new ItemStackHandler(this.inputSlots);
         if (module.hasTag())
             handler.deserializeNBT(module.getTag().getCompound("input"));
         return handler;
     }
 
     public ItemStackHandler getOutput(ItemStack module) {
-        var handler = new ItemStackHandler(this.outputSlots);
+        ItemStackHandler handler = new ItemStackHandler(this.outputSlots);
         if (module.hasTag())
             handler.deserializeNBT(module.getTag().getCompound("output"));
         return handler;
     }
 
     public void save(ItemStackHandler input, ItemStackHandler output, ItemStack module) {
-        var tag = module.getOrCreateTag();
+        CompoundTag tag = module.getOrCreateTag();
         if (input != null)
             tag.put("input", input.serializeNBT());
         if (output != null)
@@ -214,10 +216,10 @@ public class CraftingModuleItem extends ModuleItem {
     }
 
     private int getResultAmountPerCraft(ItemStack module, ItemStack stack, ItemEquality... equalityTypes) {
-        var output = this.getOutput(module);
+        ItemStackHandler output = this.getOutput(module);
-        var resultAmount = 0;
+        int resultAmount = 0;
-        for (var i = 0; i < output.getSlots(); i++) {
+        for (int i = 0; i < output.getSlots(); i++) {
-            var out = output.getStackInSlot(i);
+            ItemStack out = output.getStackInSlot(i);
             if (ItemEquality.compareItems(stack, out, equalityTypes))
                 resultAmount += out.getCount();
         }

src/main/java/de/ellpeck/prettypipes/pipe/modules/extraction/ExtractionModuleContainer.java

@@ -3,9 +3,10 @@ package de.ellpeck.prettypipes.pipe.modules.extraction;
 import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.misc.ItemFilter.IFilteredContainer;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.inventory.container.Slot;
+import net.minecraft.util.math.BlockPos;
 
 import javax.annotation.Nullable;
 
@@ -13,20 +14,20 @@ public class ExtractionModuleContainer extends AbstractPipeContainer<ExtractionM
 
     public ItemFilter filter;
 
-    public ExtractionModuleContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
+    public ExtractionModuleContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
         super(type, id, player, pos, moduleIndex);
     }
 
     @Override
     protected void addSlots() {
         this.filter = this.module.getItemFilter(this.moduleStack, this.tile);
-        for (var slot : this.filter.getSlots((176 - this.module.filterSlots * 18) / 2 + 1, 17 + 32))
+        for (Slot slot : this.filter.getSlots((176 - this.module.filterSlots * 18) / 2 + 1, 17 + 32))
             this.addSlot(slot);
     }
 
     @Override
-    public void removed(Player playerIn) {
+    public void onContainerClosed(PlayerEntity playerIn) {
-        super.removed(playerIn);
+        super.onContainerClosed(playerIn);
         this.filter.save();
     }
 

src/main/java/de/ellpeck/prettypipes/pipe/modules/extraction/ExtractionModuleGui.java

@@ -1,19 +1,19 @@
 package de.ellpeck.prettypipes.pipe.modules.extraction;
 
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeGui;
-import net.minecraft.network.chat.Component;
+import net.minecraft.client.gui.widget.Widget;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerInventory;
+import net.minecraft.util.text.ITextComponent;
 
 public class ExtractionModuleGui extends AbstractPipeGui<ExtractionModuleContainer> {
-
+    public ExtractionModuleGui(ExtractionModuleContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
-    public ExtractionModuleGui(ExtractionModuleContainer screenContainer, Inventory inv, Component titleIn) {
         super(screenContainer, inv, titleIn);
     }
 
     @Override
     protected void init() {
         super.init();
-        for (var widget : this.menu.filter.getButtons(this, this.leftPos + 7, this.topPos + 17 + 32 + 20))
+        for (Widget widget : this.container.filter.getButtons(this, this.guiLeft + 7, this.guiTop + 17 + 32 + 20))
-            this.addRenderableWidget(widget);
+            this.addButton(widget);
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/extraction/ExtractionModuleItem.java

@@ -6,12 +6,13 @@ import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.items.ModuleTier;
 import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.network.PipeNetwork;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.Direction;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.Direction;
+import net.minecraftforge.items.IItemHandler;
 
 public class ExtractionModuleItem extends ModuleItem {
 
@@ -29,23 +30,23 @@ public class ExtractionModuleItem extends ModuleItem {
     }
 
     @Override
-    public void tick(ItemStack module, PipeBlockEntity tile) {
+    public void tick(ItemStack module, PipeTileEntity tile) {
         if (!tile.shouldWorkNow(this.speed) || !tile.canWork())
             return;
-        var filter = this.getItemFilter(module, tile);
+        ItemFilter filter = this.getItemFilter(module, tile);
 
-        var network = PipeNetwork.get(tile.getLevel());
+        PipeNetwork network = PipeNetwork.get(tile.getWorld());
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var handler = tile.getItemHandler(dir);
+            IItemHandler handler = tile.getItemHandler(dir);
             if (handler == null)
                 continue;
-            for (var j = 0; j < handler.getSlots(); j++) {
+            for (int j = 0; j < handler.getSlots(); j++) {
-                var stack = handler.extractItem(j, this.maxExtraction, true);
+                ItemStack stack = handler.extractItem(j, this.maxExtraction, true);
                 if (stack.isEmpty())
                     continue;
                 if (!filter.isAllowed(stack))
                     continue;
-                var remain = network.routeItem(tile.getBlockPos(), tile.getBlockPos().relative(dir), stack, this.preventOversending);
+                ItemStack remain = network.routeItem(tile.getPos(), tile.getPos().offset(dir), stack, this.preventOversending);
                 if (remain.getCount() != stack.getCount()) {
                     handler.extractItem(j, stack.getCount() - remain.getCount(), false);
                     return;
@@ -55,32 +56,32 @@ public class ExtractionModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean canNetworkSee(ItemStack module, PipeBlockEntity tile) {
+    public boolean canNetworkSee(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 
     @Override
-    public boolean canAcceptItem(ItemStack module, PipeBlockEntity tile, ItemStack stack) {
+    public boolean canAcceptItem(ItemStack module, PipeTileEntity tile, ItemStack stack) {
         return false;
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof ExtractionModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
-        return new ExtractionModuleContainer(Registry.extractionModuleContainer, windowId, player, tile.getBlockPos(), moduleIndex);
+        return new ExtractionModuleContainer(Registry.extractionModuleContainer, windowId, player, tile.getPos(), moduleIndex);
     }
 
     @Override
-    public ItemFilter getItemFilter(ItemStack module, PipeBlockEntity tile) {
+    public ItemFilter getItemFilter(ItemStack module, PipeTileEntity tile) {
         return new ItemFilter(this.filterSlots, module, tile);
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/filter/FilterIncreaseModuleContainer.java

@@ -2,29 +2,29 @@ package de.ellpeck.prettypipes.pipe.modules.filter;
 
 import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.inventory.container.Slot;
-import net.minecraft.world.inventory.Slot;
+import net.minecraft.util.math.BlockPos;
 
 public class FilterIncreaseModuleContainer extends AbstractPipeContainer<FilterIncreaseModuleItem> implements ItemFilter.IFilteredContainer {
 
     public ItemFilter filter;
 
-    public FilterIncreaseModuleContainer(MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
+    public FilterIncreaseModuleContainer(ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
         super(type, id, player, pos, moduleIndex);
     }
 
     @Override
     protected void addSlots() {
         this.filter = this.module.getItemFilter(this.moduleStack, this.tile);
-        for (var slot : this.filter.getSlots(8, 49))
+        for (Slot slot : this.filter.getSlots(8, 49))
             this.addSlot(slot);
     }
 
     @Override
-    public void removed(Player playerIn) {
+    public void onContainerClosed(PlayerEntity playerIn) {
-        super.removed(playerIn);
+        super.onContainerClosed(playerIn);
         this.filter.save();
     }
 

src/main/java/de/ellpeck/prettypipes/pipe/modules/filter/FilterIncreaseModuleGui.java

@@ -1,12 +1,11 @@
 package de.ellpeck.prettypipes.pipe.modules.filter;
 
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeGui;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
 
 public class FilterIncreaseModuleGui extends AbstractPipeGui<FilterIncreaseModuleContainer> {
-
+    public FilterIncreaseModuleGui(FilterIncreaseModuleContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
-    public FilterIncreaseModuleGui(FilterIncreaseModuleContainer screenContainer, Inventory inv, Component titleIn) {
         super(screenContainer, inv, titleIn);
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/filter/FilterIncreaseModuleItem.java

@@ -4,10 +4,10 @@ import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.misc.ItemFilter;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.world.item.ItemStack;
 
 public class FilterIncreaseModuleItem extends ModuleItem {
@@ -18,23 +18,23 @@ public class FilterIncreaseModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return true;
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
-        return new FilterIncreaseModuleContainer(Registry.filterIncreaseModuleContainer, windowId, player, tile.getBlockPos(), moduleIndex);
+        return new FilterIncreaseModuleContainer(Registry.filterIncreaseModuleContainer, windowId, player, tile.getPos(), moduleIndex);
     }
 
     @Override
-    public ItemFilter getItemFilter(ItemStack module, PipeBlockEntity tile) {
+    public ItemFilter getItemFilter(ItemStack module, PipeTileEntity tile) {
-        var filter = new ItemFilter(18, module, tile);
+        ItemFilter filter = new ItemFilter(18, module, tile);
         filter.canModifyWhitelist = false;
         return filter;
     }

src/main/java/de/ellpeck/prettypipes/pipe/modules/insertion/FilterModuleContainer.java

@@ -3,10 +3,10 @@ package de.ellpeck.prettypipes.pipe.modules.insertion;
 import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.misc.ItemFilter.IFilteredContainer;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.inventory.container.Slot;
-import net.minecraft.world.inventory.Slot;
+import net.minecraft.util.math.BlockPos;
 
 import javax.annotation.Nullable;
 
@@ -14,20 +14,20 @@ public class FilterModuleContainer extends AbstractPipeContainer<FilterModuleIte
 
     public ItemFilter filter;
 
-    public FilterModuleContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
+    public FilterModuleContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
         super(type, id, player, pos, moduleIndex);
     }
 
     @Override
     protected void addSlots() {
         this.filter = this.module.getItemFilter(this.moduleStack, this.tile);
-        for (var slot : this.filter.getSlots((176 - Math.min(this.module.filterSlots, 9) * 18) / 2 + 1, 17 + 32))
+        for (Slot slot : this.filter.getSlots((176 - Math.min(this.module.filterSlots, 9) * 18) / 2 + 1, 17 + 32))
             this.addSlot(slot);
     }
 
     @Override
-    public void removed(Player playerIn) {
+    public void onContainerClosed(PlayerEntity playerIn) {
-        super.removed(playerIn);
+        super.onContainerClosed(playerIn);
         this.filter.save();
     }
 

src/main/java/de/ellpeck/prettypipes/pipe/modules/insertion/FilterModuleGui.java

@@ -1,21 +1,20 @@
 package de.ellpeck.prettypipes.pipe.modules.insertion;
 
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeGui;
-import net.minecraft.client.gui.components.AbstractWidget;
+import net.minecraft.client.gui.widget.Widget;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.util.Mth;
+import net.minecraft.util.math.MathHelper;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
 
 public class FilterModuleGui extends AbstractPipeGui<FilterModuleContainer> {
-
+    public FilterModuleGui(FilterModuleContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
-    public FilterModuleGui(FilterModuleContainer screenContainer, Inventory inv, Component titleIn) {
         super(screenContainer, inv, titleIn);
     }
 
     @Override
     protected void init() {
         super.init();
-        for (var widget : this.menu.filter.getButtons(this, this.leftPos + 7, this.topPos + 17 + 32 + 18 * Mth.ceil(this.menu.filter.getSlots() / 9F) + 2))
+        for (Widget widget : this.container.filter.getButtons(this, this.guiLeft + 7, this.guiTop + 17 + 32 + 18 * MathHelper.ceil(this.container.filter.getSlots() / 9F) + 2))
-            this.addRenderableWidget(widget);
+            this.addButton(widget);
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/insertion/FilterModuleItem.java

@@ -5,10 +5,10 @@ import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.items.ModuleTier;
 import de.ellpeck.prettypipes.misc.ItemFilter;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.world.item.ItemStack;
 
 public class FilterModuleItem extends ModuleItem {
@@ -23,29 +23,29 @@ public class FilterModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean canAcceptItem(ItemStack module, PipeBlockEntity tile, ItemStack stack) {
+    public boolean canAcceptItem(ItemStack module, PipeTileEntity tile, ItemStack stack) {
-        var filter = this.getItemFilter(module, tile);
+        ItemFilter filter = this.getItemFilter(module, tile);
         return filter.isAllowed(stack);
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof FilterModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
-        return new FilterModuleContainer(Registry.filterModuleContainer, windowId, player, tile.getBlockPos(), moduleIndex);
+        return new FilterModuleContainer(Registry.filterModuleContainer, windowId, player, tile.getPos(), moduleIndex);
     }
 
     @Override
-    public ItemFilter getItemFilter(ItemStack module, PipeBlockEntity tile) {
+    public ItemFilter getItemFilter(ItemStack module, PipeTileEntity tile) {
-        var filter = new ItemFilter(this.filterSlots, module, tile);
+        ItemFilter filter = new ItemFilter(this.filterSlots, module, tile);
         filter.canPopulateFromInventories = this.canPopulateFromInventories;
         return filter;
     }

src/main/java/de/ellpeck/prettypipes/pipe/modules/modifier/FilterModifierModuleContainer.java

@@ -2,11 +2,11 @@ package de.ellpeck.prettypipes.pipe.modules.modifier;
 
 import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.resources.ResourceLocation;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.inventory.MenuType;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.util.math.BlockPos;
 
 import javax.annotation.Nullable;
 import java.util.HashSet;
@@ -16,15 +16,15 @@ import java.util.stream.Collectors;
 
 public class FilterModifierModuleContainer extends AbstractPipeContainer<FilterModifierModuleItem> {
 
-    public FilterModifierModuleContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
+    public FilterModifierModuleContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
         super(type, id, player, pos, moduleIndex);
     }
 
     public List<ResourceLocation> getTags() {
         Set<ResourceLocation> unsortedTags = new HashSet<>();
-        for (var filter : this.tile.getFilters()) {
+        for (ItemFilter filter : this.tile.getFilters()) {
-            for (var i = 0; i < filter.getSlots(); i++) {
+            for (int i = 0; i < filter.getSlots(); i++) {
-                var stack = filter.getStackInSlot(i);
+                ItemStack stack = filter.getStackInSlot(i);
                 unsortedTags.addAll(stack.getItem().getTags());
             }
         }

src/main/java/de/ellpeck/prettypipes/pipe/modules/modifier/FilterModifierModuleGui.java

@@ -1,60 +1,59 @@
 package de.ellpeck.prettypipes.pipe.modules.modifier;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
 import de.ellpeck.prettypipes.packets.PacketButton;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeGui;
-import net.minecraft.ChatFormatting;
+import net.minecraft.client.audio.SimpleSound;
-import net.minecraft.client.resources.sounds.SimpleSoundInstance;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.network.chat.Component;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.sounds.SoundEvents;
+import net.minecraft.util.SoundEvents;
-import net.minecraft.util.Mth;
+import net.minecraft.util.math.MathHelper;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.TextFormatting;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class FilterModifierModuleGui extends AbstractPipeGui<FilterModifierModuleContainer> {
-
     private int scrollOffset;
     private boolean isScrolling;
     private List<ResourceLocation> tags;
     private final List<Tag> tagButtons = new ArrayList<>();
 
-    public FilterModifierModuleGui(FilterModifierModuleContainer screenContainer, Inventory inv, Component titleIn) {
+    public FilterModifierModuleGui(FilterModifierModuleContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
         super(screenContainer, inv, titleIn);
     }
 
     @Override
-    protected void renderBg(PoseStack matrix, float partialTicks, int mouseX, int mouseY) {
+    protected void drawGuiContainerBackgroundLayer(MatrixStack matrix, float partialTicks, int mouseX, int mouseY) {
-        super.renderBg(matrix, partialTicks, mouseX, mouseY);
+        super.drawGuiContainerBackgroundLayer(matrix, partialTicks, mouseX, mouseY);
-        this.blit(matrix, this.leftPos + 7, this.topPos + 32 + 15, 0, 196, 162, 60);
+        this.blit(matrix, this.guiLeft + 7, this.guiTop + 32 + 15, 0, 196, 162, 60);
 
-        for (var tag : this.tagButtons)
+        for (Tag tag : this.tagButtons)
             tag.draw(matrix, mouseX, mouseY);
 
         if (this.tags.size() >= 6) {
-            var percentage = this.scrollOffset / (float) (this.tags.size() - 5);
+            float percentage = this.scrollOffset / (float) (this.tags.size() - 5);
-            this.blit(matrix, this.leftPos + 156, this.topPos + 32 + 16 + (int) (percentage * (58 - 15)), 232, 241, 12, 15);
+            this.blit(matrix, this.guiLeft + 156, this.guiTop + 32 + 16 + (int) (percentage * (58 - 15)), 232, 241, 12, 15);
         } else {
-            this.blit(matrix, this.leftPos + 156, this.topPos + 32 + 16, 244, 241, 12, 15);
+            this.blit(matrix, this.guiLeft + 156, this.guiTop + 32 + 16, 244, 241, 12, 15);
         }
     }
 
     @Override
     protected void init() {
         super.init();
-        this.tags = this.menu.getTags();
+        this.tags = this.container.getTags();
         this.updateWidgets();
     }
 
     @Override
     public boolean mouseClicked(double mouseX, double mouseY, int button) {
-        for (var tag : this.tagButtons) {
+        for (Tag tag : this.tagButtons) {
             if (tag.onClicked(mouseX, mouseY, button))
                 return true;
         }
-        if (button == 0 && mouseX >= this.leftPos + 156 && this.topPos + mouseY >= 32 + 16 && mouseX < this.leftPos + 156 + 12 && mouseY < this.topPos + 32 + 16 + 58) {
+        if (button == 0 && mouseX >= this.guiLeft + 156 && this.guiTop + mouseY >= 32 + 16 && mouseX < this.guiLeft + 156 + 12 && mouseY < this.guiTop + 32 + 16 + 58) {
             this.isScrolling = true;
             return true;
         }
@@ -71,8 +70,8 @@ public class FilterModifierModuleGui extends AbstractPipeGui<FilterModifierModul
     @Override
     public boolean mouseDragged(double mouseX, double mouseY, int i, double j, double k) {
         if (this.isScrolling) {
-            var percentage = Mth.clamp(((float) mouseY - (this.topPos + 32 + 18)) / (58 - 15), 0, 1);
+            float percentage = MathHelper.clamp(((float) mouseY - (this.guiTop + 32 + 18)) / (58 - 15), 0, 1);
-            var offset = (int) (percentage * (float) (this.tags.size() - 5));
+            int offset = (int) (percentage * (float) (this.tags.size() - 5));
             if (offset != this.scrollOffset) {
                 this.scrollOffset = offset;
                 this.updateWidgets();
@@ -85,7 +84,7 @@ public class FilterModifierModuleGui extends AbstractPipeGui<FilterModifierModul
     @Override
     public boolean mouseScrolled(double x, double y, double scroll) {
         if (this.tags.size() >= 6) {
-            var offset = Mth.clamp(this.scrollOffset - (int) Math.signum(scroll), 0, this.tags.size() - 5);
+            int offset = MathHelper.clamp(this.scrollOffset - (int) Math.signum(scroll), 0, this.tags.size() - 5);
             if (offset != this.scrollOffset) {
                 this.scrollOffset = offset;
                 this.updateWidgets();
@@ -96,10 +95,10 @@ public class FilterModifierModuleGui extends AbstractPipeGui<FilterModifierModul
 
     private void updateWidgets() {
         this.tagButtons.clear();
-        for (var i = 0; i < 5; i++) {
+        for (int i = 0; i < 5; i++) {
             if (i >= this.tags.size())
                 break;
-            this.tagButtons.add(new Tag(this.tags.get(this.scrollOffset + i), this.leftPos + 10, this.topPos + 32 + 17 + i * 12));
+            this.tagButtons.add(new Tag(this.tags.get(this.scrollOffset + i), this.guiLeft + 10, this.guiTop + 32 + 17 + i * 12));
         }
     }
 
@@ -115,15 +114,15 @@ public class FilterModifierModuleGui extends AbstractPipeGui<FilterModifierModul
             this.y = y;
         }
 
-        private void draw(PoseStack matrix, double mouseX, double mouseY) {
+        private void draw(MatrixStack matrix, double mouseX, double mouseY) {
-            var color = 4210752;
+            int color = 4210752;
-            var text = this.tag.toString();
+            String text = this.tag.toString();
             if (mouseX >= this.x && mouseY >= this.y && mouseX < this.x + 140 && mouseY < this.y + 12)
                 color = 0xFFFFFF;
-            if (this.tag.equals(FilterModifierModuleItem.getFilterTag(FilterModifierModuleGui.this.menu.moduleStack)))
+            if (this.tag.equals(FilterModifierModuleItem.getFilterTag(FilterModifierModuleGui.this.container.moduleStack)))
-                text = ChatFormatting.BOLD + text;
+                text = TextFormatting.BOLD + text;
-            FilterModifierModuleGui.this.font.draw(matrix, text, this.x, this.y, color);
+            FilterModifierModuleGui.this.font.drawString(matrix, text, this.x, this.y, color);
-            FilterModifierModuleGui.this.getMinecraft().getTextureManager().bindForSetup(TEXTURE);
+            FilterModifierModuleGui.this.getMinecraft().getTextureManager().bindTexture(TEXTURE);
         }
 
         private boolean onClicked(double mouseX, double mouseY, int button) {
@@ -131,8 +130,8 @@ public class FilterModifierModuleGui extends AbstractPipeGui<FilterModifierModul
                 return false;
             if (mouseX < this.x || mouseY < this.y || mouseX >= this.x + 140 || mouseY >= this.y + 12)
                 return false;
-            PacketButton.sendAndExecute(FilterModifierModuleGui.this.menu.tile.getBlockPos(), PacketButton.ButtonResult.TAG_FILTER, FilterModifierModuleGui.this.tags.indexOf(this.tag));
+            PacketButton.sendAndExecute(FilterModifierModuleGui.this.container.tile.getPos(), PacketButton.ButtonResult.TAG_FILTER, FilterModifierModuleGui.this.tags.indexOf(this.tag));
-            FilterModifierModuleGui.this.getMinecraft().getSoundManager().play(SimpleSoundInstance.forUI(SoundEvents.UI_BUTTON_CLICK, 1));
+            FilterModifierModuleGui.this.getMinecraft().getSoundHandler().play(SimpleSound.master(SoundEvents.UI_BUTTON_CLICK, 1));
             return true;
         }
     }

src/main/java/de/ellpeck/prettypipes/pipe/modules/modifier/FilterModifierModuleItem.java

@@ -4,13 +4,19 @@ import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.misc.ItemEquality;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
 import joptsimple.internal.Strings;
-import net.minecraft.resources.ResourceLocation;
+import net.minecraft.client.util.ITooltipFlag;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.world.World;
+
+import javax.annotation.Nullable;
+import java.util.List;
 
 public class FilterModifierModuleItem extends ModuleItem {
 
@@ -23,18 +29,23 @@ public class FilterModifierModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return other != this;
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return this.type == ItemEquality.Type.TAG;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
-        return new FilterModifierModuleContainer(Registry.filterModifierModuleContainer, windowId, player, tile.getBlockPos(), moduleIndex);
+        return new FilterModifierModuleContainer(Registry.filterModifierModuleContainer, windowId, player, tile.getPos(), moduleIndex);
+    }
+
+    @Override
+    public void addInformation(ItemStack stack, @Nullable World worldIn, List<ITextComponent> tooltip, ITooltipFlag flagIn) {
+        super.addInformation(stack, worldIn, tooltip, flagIn);
     }
 
     public ItemEquality getEqualityType(ItemStack stack) {
@@ -48,7 +59,7 @@ public class FilterModifierModuleItem extends ModuleItem {
     public static ResourceLocation getFilterTag(ItemStack stack) {
         if (!stack.hasTag())
             return null;
-        var tag = stack.getTag().getString("filter_tag");
+        String tag = stack.getTag().getString("filter_tag");
         if (Strings.isNullOrEmpty(tag))
             return null;
         return new ResourceLocation(tag);

src/main/java/de/ellpeck/prettypipes/pipe/modules/retrieval/RetrievalModuleContainer.java

@@ -3,10 +3,10 @@ package de.ellpeck.prettypipes.pipe.modules.retrieval;
 import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.misc.ItemFilter.IFilteredContainer;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.inventory.container.Slot;
-import net.minecraft.world.inventory.Slot;
+import net.minecraft.util.math.BlockPos;
 
 import javax.annotation.Nullable;
 
@@ -14,20 +14,20 @@ public class RetrievalModuleContainer extends AbstractPipeContainer<RetrievalMod
 
     public ItemFilter filter;
 
-    public RetrievalModuleContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
+    public RetrievalModuleContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
         super(type, id, player, pos, moduleIndex);
     }
 
     @Override
     protected void addSlots() {
         this.filter = this.module.getItemFilter(this.moduleStack, this.tile);
-        for (var slot : this.filter.getSlots((176 - this.module.filterSlots * 18) / 2 + 1, 17 + 32))
+        for (Slot slot : this.filter.getSlots((176 - this.module.filterSlots * 18) / 2 + 1, 17 + 32))
             this.addSlot(slot);
     }
 
     @Override
-    public void removed(Player playerIn) {
+    public void onContainerClosed(PlayerEntity playerIn) {
-        super.removed(playerIn);
+        super.onContainerClosed(playerIn);
         this.filter.save();
     }
 

src/main/java/de/ellpeck/prettypipes/pipe/modules/retrieval/RetrievalModuleGui.java

@@ -1,20 +1,19 @@
 package de.ellpeck.prettypipes.pipe.modules.retrieval;
 
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeGui;
-import net.minecraft.client.gui.components.AbstractWidget;
+import net.minecraft.client.gui.widget.Widget;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
 
 public class RetrievalModuleGui extends AbstractPipeGui<RetrievalModuleContainer> {
-
+    public RetrievalModuleGui(RetrievalModuleContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
-    public RetrievalModuleGui(RetrievalModuleContainer screenContainer, Inventory inv, Component titleIn) {
         super(screenContainer, inv, titleIn);
     }
 
     @Override
     protected void init() {
         super.init();
-        for (var widget : this.menu.filter.getButtons(this, this.leftPos + 7, this.topPos + 17 + 32 + 20))
+        for (Widget widget : this.container.filter.getButtons(this, this.guiLeft + 7, this.guiTop + 17 + 32 + 20))
-            this.addRenderableWidget(widget);
+            this.addButton(widget);
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/retrieval/RetrievalModuleItem.java

@@ -7,16 +7,15 @@ import de.ellpeck.prettypipes.items.ModuleTier;
 import de.ellpeck.prettypipes.misc.ItemEquality;
 import de.ellpeck.prettypipes.misc.ItemFilter;
 import de.ellpeck.prettypipes.network.PipeNetwork;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
 import org.apache.commons.lang3.tuple.Pair;
 
 public class RetrievalModuleItem extends ModuleItem {
-
     private final int maxExtraction;
     private final int speed;
     private final boolean preventOversending;
@@ -31,60 +30,60 @@ public class RetrievalModuleItem extends ModuleItem {
     }
 
     @Override
-    public void tick(ItemStack module, PipeBlockEntity tile) {
+    public void tick(ItemStack module, PipeTileEntity tile) {
         if (!tile.shouldWorkNow(this.speed) || !tile.canWork())
             return;
-        var network = PipeNetwork.get(tile.getLevel());
+        PipeNetwork network = PipeNetwork.get(tile.getWorld());
 
-        var equalityTypes = ItemFilter.getEqualityTypes(tile);
+        ItemEquality[] equalityTypes = ItemFilter.getEqualityTypes(tile);
         // loop through filters to see which items to pull
-        for (var subFilter : tile.getFilters()) {
+        for (ItemFilter subFilter : tile.getFilters()) {
-            for (var f = 0; f < subFilter.getSlots(); f++) {
+            for (int f = 0; f < subFilter.getSlots(); f++) {
-                var filtered = subFilter.getStackInSlot(f);
+                ItemStack filtered = subFilter.getStackInSlot(f);
                 if (filtered.isEmpty())
                     continue;
-                var copy = filtered.copy();
+                ItemStack copy = filtered.copy();
                 copy.setCount(this.maxExtraction);
-                var dest = tile.getAvailableDestination(copy, true, this.preventOversending);
+                Pair<BlockPos, ItemStack> dest = tile.getAvailableDestination(copy, true, this.preventOversending);
                 if (dest == null)
                     continue;
-                var remain = dest.getRight().copy();
+                ItemStack remain = dest.getRight().copy();
                 // are we already waiting for crafting results? If so, don't request those again
-                remain.shrink(network.getCurrentlyCraftingAmount(tile.getBlockPos(), copy, equalityTypes));
+                remain.shrink(network.getCurrentlyCraftingAmount(tile.getPos(), copy, equalityTypes));
-                if (network.requestItem(tile.getBlockPos(), dest.getLeft(), remain, equalityTypes).isEmpty())
+                if (network.requestItem(tile.getPos(), dest.getLeft(), remain, equalityTypes).isEmpty())
                     break;
             }
         }
     }
 
     @Override
-    public boolean canNetworkSee(ItemStack module, PipeBlockEntity tile) {
+    public boolean canNetworkSee(ItemStack module, PipeTileEntity tile) {
         return false;
     }
 
     @Override
-    public boolean canAcceptItem(ItemStack module, PipeBlockEntity tile, ItemStack stack) {
+    public boolean canAcceptItem(ItemStack module, PipeTileEntity tile, ItemStack stack) {
         return false;
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof RetrievalModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
-        return new RetrievalModuleContainer(Registry.retrievalModuleContainer, windowId, player, tile.getBlockPos(), moduleIndex);
+        return new RetrievalModuleContainer(Registry.retrievalModuleContainer, windowId, player, tile.getPos(), moduleIndex);
     }
 
     @Override
-    public ItemFilter getItemFilter(ItemStack module, PipeBlockEntity tile) {
+    public ItemFilter getItemFilter(ItemStack module, PipeTileEntity tile) {
-        var filter = new ItemFilter(this.filterSlots, module, tile);
+        ItemFilter filter = new ItemFilter(this.filterSlots, module, tile);
         filter.canModifyWhitelist = false;
         filter.isWhitelist = true;
         return filter;

src/main/java/de/ellpeck/prettypipes/pipe/modules/stacksize/StackSizeModuleContainer.java

@@ -1,15 +1,14 @@
 package de.ellpeck.prettypipes.pipe.modules.stacksize;
 
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.container.ContainerType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.util.math.BlockPos;
 
 import javax.annotation.Nullable;
 
 public class StackSizeModuleContainer extends AbstractPipeContainer<StackSizeModuleItem> {
-
+    public StackSizeModuleContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos, int moduleIndex) {
-    public StackSizeModuleContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos, int moduleIndex) {
         super(type, id, player, pos, moduleIndex);
     }
 

src/main/java/de/ellpeck/prettypipes/pipe/modules/stacksize/StackSizeModuleGui.java

@@ -1,59 +1,57 @@
 package de.ellpeck.prettypipes.pipe.modules.stacksize;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
 import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.packets.PacketButton;
 import de.ellpeck.prettypipes.packets.PacketButton.ButtonResult;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeGui;
-import net.minecraft.client.gui.components.Button;
+import net.minecraft.client.gui.widget.TextFieldWidget;
-import net.minecraft.client.gui.components.EditBox;
+import net.minecraft.client.gui.widget.button.Button;
-import net.minecraft.client.resources.language.I18n;
+import net.minecraft.client.resources.I18n;
-import net.minecraft.network.chat.Component;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.network.chat.TranslatableComponent;
+import net.minecraft.util.text.ITextComponent;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.TranslationTextComponent;
 
 import java.util.function.Supplier;
 
 public class StackSizeModuleGui extends AbstractPipeGui<StackSizeModuleContainer> {
-
+    public StackSizeModuleGui(StackSizeModuleContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
-    public StackSizeModuleGui(StackSizeModuleContainer screenContainer, Inventory inv, Component titleIn) {
         super(screenContainer, inv, titleIn);
     }
 
     @Override
     protected void init() {
         super.init();
-        var textField = this.addRenderableWidget(new EditBox(this.font, this.leftPos + 7, this.topPos + 17 + 32 + 10, 40, 20, new TranslatableComponent("info." + PrettyPipes.ID + ".max_stack_size")) {
+        TextFieldWidget textField = this.addButton(new TextFieldWidget(this.font, this.guiLeft + 7, this.guiTop + 17 + 32 + 10, 40, 20, new TranslationTextComponent("info." + PrettyPipes.ID + ".max_stack_size")) {
             @Override
-            public void insertText(String textToWrite) {
+            public void writeText(String textToWrite) {
-                var ret = new StringBuilder();
+                StringBuilder ret = new StringBuilder();
-                for (var c : textToWrite.toCharArray()) {
+                for (char c : textToWrite.toCharArray()) {
                     if (Character.isDigit(c))
                         ret.append(c);
                 }
-                super.insertText(ret.toString());
+                super.writeText(ret.toString());
             }
-
         });
-        textField.setValue(String.valueOf(StackSizeModuleItem.getMaxStackSize(this.menu.moduleStack)));
+        textField.setText(String.valueOf(StackSizeModuleItem.getMaxStackSize(this.container.moduleStack)));
-        textField.setMaxLength(4);
+        textField.setMaxStringLength(4);
         textField.setResponder(s -> {
             if (s.isEmpty())
                 return;
-            var amount = Integer.parseInt(s);
+            int amount = Integer.parseInt(s);
-            PacketButton.sendAndExecute(this.menu.tile.getBlockPos(), ButtonResult.STACK_SIZE_AMOUNT, amount);
+            PacketButton.sendAndExecute(this.container.tile.getPos(), ButtonResult.STACK_SIZE_AMOUNT, amount);
         });
-        var buttonText = (Supplier<TranslatableComponent>) () -> new TranslatableComponent("info." + PrettyPipes.ID + ".limit_to_max_" + (StackSizeModuleItem.getLimitToMaxStackSize(this.menu.moduleStack) ? "on" : "off"));
+        Supplier<TranslationTextComponent> buttonText = () -> new TranslationTextComponent("info." + PrettyPipes.ID + ".limit_to_max_" + (StackSizeModuleItem.getLimitToMaxStackSize(this.container.moduleStack) ? "on" : "off"));
-        this.addRenderableWidget(new Button(this.leftPos + 7, this.topPos + 17 + 32 + 10 + 22, 120, 20, buttonText.get(), b -> {
+        this.addButton(new Button(this.guiLeft + 7, this.guiTop + 17 + 32 + 10 + 22, 120, 20, buttonText.get(), b -> {
-            PacketButton.sendAndExecute(this.menu.tile.getBlockPos(), ButtonResult.STACK_SIZE_MODULE_BUTTON);
+            PacketButton.sendAndExecute(this.container.tile.getPos(), ButtonResult.STACK_SIZE_MODULE_BUTTON);
             b.setMessage(buttonText.get());
         }));
     }
 
     @Override
-    protected void renderLabels(PoseStack matrix, int mouseX, int mouseY) {
+    protected void drawGuiContainerForegroundLayer(MatrixStack matrix, int mouseX, int mouseY) {
-        super.renderLabels(matrix, mouseX, mouseY);
+        super.drawGuiContainerForegroundLayer(matrix, mouseX, mouseY);
-        this.font.draw(matrix, I18n.get("info." + PrettyPipes.ID + ".max_stack_size") + ":", 7, 17 + 32, 4210752);
+        this.font.drawString(matrix, I18n.format("info." + PrettyPipes.ID + ".max_stack_size") + ":", 7, 17 + 32, 4210752);
 
     }
 }

src/main/java/de/ellpeck/prettypipes/pipe/modules/stacksize/StackSizeModuleItem.java

@@ -4,10 +4,10 @@ import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.items.IModule;
 import de.ellpeck.prettypipes.items.ModuleItem;
 import de.ellpeck.prettypipes.misc.ItemEquality;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.pipe.containers.AbstractPipeContainer;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.world.item.ItemStack;
 import net.minecraftforge.items.IItemHandler;
 
@@ -20,7 +20,7 @@ public class StackSizeModuleItem extends ModuleItem {
 
     public static int getMaxStackSize(ItemStack module) {
         if (module.hasTag()) {
-            var amount = module.getTag().getInt("max_stack_size");
+            int amount = module.getTag().getInt("max_stack_size");
             if (amount > 0)
                 return amount;
         }
@@ -42,13 +42,13 @@ public class StackSizeModuleItem extends ModuleItem {
     }
 
     @Override
-    public int getMaxInsertionAmount(ItemStack module, PipeBlockEntity tile, ItemStack stack, IItemHandler destination) {
+    public int getMaxInsertionAmount(ItemStack module, PipeTileEntity tile, ItemStack stack, IItemHandler destination) {
-        var max = getMaxStackSize(module);
+        int max = getMaxStackSize(module);
         if (getLimitToMaxStackSize(module))
             max = Math.min(max, stack.getMaxStackSize());
-        var amount = 0;
+        int amount = 0;
-        for (var i = 0; i < destination.getSlots(); i++) {
+        for (int i = 0; i < destination.getSlots(); i++) {
-            var stored = destination.getStackInSlot(i);
+            ItemStack stored = destination.getStackInSlot(i);
             if (stored.isEmpty())
                 continue;
             if (!ItemEquality.compareItems(stored, stack))
@@ -61,17 +61,17 @@ public class StackSizeModuleItem extends ModuleItem {
     }
 
     @Override
-    public boolean isCompatible(ItemStack module, PipeBlockEntity tile, IModule other) {
+    public boolean isCompatible(ItemStack module, PipeTileEntity tile, IModule other) {
         return !(other instanceof StackSizeModuleItem);
     }
 
     @Override
-    public boolean hasContainer(ItemStack module, PipeBlockEntity tile) {
+    public boolean hasContainer(ItemStack module, PipeTileEntity tile) {
         return true;
     }
 
     @Override
-    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeBlockEntity tile, int windowId, Inventory inv, Player player, int moduleIndex) {
+    public AbstractPipeContainer<?> getContainer(ItemStack module, PipeTileEntity tile, int windowId, PlayerInventory inv, PlayerEntity player, int moduleIndex) {
-        return new StackSizeModuleContainer(Registry.stackSizeModuleContainer, windowId, player, tile.getBlockPos(), moduleIndex);
+        return new StackSizeModuleContainer(Registry.stackSizeModuleContainer, windowId, player, tile.getPos(), moduleIndex);
     }
 }

src/main/java/de/ellpeck/prettypipes/pressurizer/PressurizerBlock.java

@@ -1,68 +1,56 @@
 package de.ellpeck.prettypipes.pressurizer;
 
-import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.Utility;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import net.minecraft.block.BlockRenderType;
-import net.minecraft.core.BlockPos;
+import net.minecraft.block.BlockState;
-import net.minecraft.network.chat.Component;
+import net.minecraft.block.ContainerBlock;
-import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.block.SoundType;
-import net.minecraft.world.InteractionHand;
+import net.minecraft.block.material.Material;
-import net.minecraft.world.InteractionResult;
+import net.minecraft.client.util.ITooltipFlag;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.player.ServerPlayerEntity;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.TooltipFlag;
+import net.minecraft.tileentity.TileEntity;
-import net.minecraft.world.level.BlockGetter;
+import net.minecraft.util.ActionResultType;
-import net.minecraft.world.level.Level;
+import net.minecraft.util.Direction;
-import net.minecraft.world.level.block.BaseEntityBlock;
+import net.minecraft.util.Hand;
-import net.minecraft.world.level.block.RenderShape;
+import net.minecraft.util.math.BlockPos;
-import net.minecraft.world.level.block.SoundType;
+import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.util.text.ITextComponent;
-import net.minecraft.world.level.block.entity.BlockEntityTicker;
+import net.minecraft.world.IBlockReader;
-import net.minecraft.world.level.block.entity.BlockEntityType;
+import net.minecraft.world.World;
-import net.minecraft.world.level.block.state.BlockBehaviour;
+import net.minecraftforge.fml.network.NetworkHooks;
-import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.level.material.Material;
-import net.minecraft.world.phys.BlockHitResult;
-import net.minecraftforge.network.NetworkHooks;
 
 import javax.annotation.Nullable;
 import java.util.List;
 
-public class PressurizerBlock extends BaseEntityBlock {
+public class PressurizerBlock extends ContainerBlock {
-
     public PressurizerBlock() {
-        super(BlockBehaviour.Properties.of(Material.STONE).strength(3).sound(SoundType.STONE));
+        super(Properties.create(Material.ROCK).hardnessAndResistance(3).sound(SoundType.STONE));
     }
 
     @Override
-    public InteractionResult use(BlockState state, Level worldIn, BlockPos pos, Player player, InteractionHand handIn, BlockHitResult result) {
+    public ActionResultType onBlockActivated(BlockState state, World worldIn, BlockPos pos, PlayerEntity player, Hand handIn, BlockRayTraceResult result) {
-        var tile = Utility.getBlockEntity(PressurizerBlockEntity.class, worldIn, pos);
+        PressurizerBlockEntity tile = Utility.getBlockEntity(PressurizerBlockEntity.class, worldIn, pos);
         if (tile == null)
-            return InteractionResult.PASS;
+            return ActionResultType.PASS;
-        if (!worldIn.isClientSide)
+        if (!worldIn.isRemote)
-            NetworkHooks.openGui((ServerPlayer) player, tile, pos);
+            NetworkHooks.openGui((ServerPlayerEntity) player, tile, pos);
-        return InteractionResult.SUCCESS;
+        return ActionResultType.SUCCESS;
-    }
-
-    @org.jetbrains.annotations.Nullable
-    @Override
-    public BlockEntity newBlockEntity(BlockPos pos, BlockState state) {
-        return new PressurizerBlockEntity(pos, state);
     }
 
     @Override
-    public RenderShape getRenderShape(BlockState state) {
+    public TileEntity createNewTileEntity(IBlockReader worldIn) {
-        return RenderShape.MODEL;
+        return new PressurizerBlockEntity();
     }
 
     @Override
-    public void appendHoverText(ItemStack stack, @Nullable BlockGetter worldIn, List<Component> tooltip, TooltipFlag flagIn) {
+    public BlockRenderType getRenderType(BlockState state) {
+        return BlockRenderType.MODEL;
+    }
+
+    @Override
+    public void addInformation(ItemStack stack, @Nullable IBlockReader worldIn, List<ITextComponent> tooltip, ITooltipFlag flagIn) {
         Utility.addTooltip(this.getRegistryName().getPath(), tooltip);
     }
-
-    @org.jetbrains.annotations.Nullable
-    @Override
-    public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level level, BlockState state, BlockEntityType<T> type) {
-        return level.isClientSide ? null : createTickerHelper(type, Registry.pressurizerBlockEntity, PressurizerBlockEntity::tick);
-    }
 }

src/main/java/de/ellpeck/prettypipes/pressurizer/PressurizerBlockEntity.java

@@ -6,21 +6,25 @@ import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.network.PipeNetwork;
 import de.ellpeck.prettypipes.pipe.ConnectionType;
 import de.ellpeck.prettypipes.pipe.IPipeConnectable;
-import net.minecraft.core.BlockPos;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
-import net.minecraft.core.Direction;
+import net.minecraft.block.BlockState;
-import net.minecraft.nbt.CompoundTag;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.network.Connection;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.network.chat.Component;
+import net.minecraft.inventory.container.Container;
-import net.minecraft.network.chat.TranslatableComponent;
+import net.minecraft.inventory.container.INamedContainerProvider;
-import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket;
-import net.minecraft.world.MenuProvider;
-import net.minecraft.world.entity.player.Inventory;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.inventory.AbstractContainerMenu;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.Level;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.network.NetworkManager;
+import net.minecraft.network.play.server.SUpdateTileEntityPacket;
+import net.minecraft.tileentity.ITickableTileEntity;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.tileentity.TileEntityType;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.TranslationTextComponent;
+import net.minecraft.world.World;
 import net.minecraft.world.level.block.entity.BlockEntity;
-import net.minecraft.world.level.block.state.BlockState;
 import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.common.util.LazyOptional;
 import net.minecraftforge.energy.CapabilityEnergy;
@@ -29,19 +33,19 @@ import net.minecraftforge.energy.IEnergyStorage;
 
 import javax.annotation.Nullable;
 
-public class PressurizerBlockEntity extends BlockEntity implements MenuProvider, IPipeConnectable {
+public class PressurizerBlockEntity extends BlockEntity implements INamedContainerProvider, ITickableTileEntity, IPipeConnectable {
 
     private final ModifiableEnergyStorage storage = new ModifiableEnergyStorage(64000, 512, 0);
     private final LazyOptional<IEnergyStorage> lazyStorage = LazyOptional.of(() -> this.storage);
     private final LazyOptional<IPipeConnectable> lazyThis = LazyOptional.of(() -> this);
     private int lastEnergy;
 
-    public PressurizerBlockEntity(BlockPos pos, BlockState state) {
+    public PressurizerBlockEntity() {
-        super(Registry.pressurizerBlockEntity, pos, state);
+        super(Registry.pressurizerTileEntity);
     }
 
     public boolean pressurizeItem(ItemStack stack, boolean simulate) {
-        var amount = 100 * stack.getCount();
+        int amount = 100 * stack.getCount();
         return this.storage.extractInternal(amount, simulate) >= amount;
     }
 
@@ -58,41 +62,41 @@ public class PressurizerBlockEntity extends BlockEntity implements MenuProvider,
     }
 
     @Override
-    public CompoundTag save(CompoundTag compound) {
+    public CompoundTag write(CompoundTag compound) {
         compound.putInt("energy", this.getEnergy());
-        return super.save(compound);
+        return super.write(compound);
     }
 
     @Override
-    public void load(CompoundTag nbt) {
+    public void read(BlockState state, CompoundTag nbt) {
         this.storage.setEnergyStored(nbt.getInt("energy"));
-        super.load(nbt);
+        super.read(state, nbt);
     }
 
     @Override
     public CompoundTag getUpdateTag() {
-        return this.save(new CompoundTag());
+        return this.write(new CompoundTag());
     }
 
     @Override
-    public void handleUpdateTag(CompoundTag tag) {
+    public void handleUpdateTag(BlockState state, CompoundTag tag) {
-        this.load(tag);
+        this.read(state, tag);
     }
 
     @Override
-    public void onDataPacket(Connection net, ClientboundBlockEntityDataPacket pkt) {
+    public void onDataPacket(NetworkManager net, SUpdateTileEntityPacket pkt) {
-        this.load(pkt.getTag());
+        this.read(this.getBlockState(), pkt.getNbtCompound());
     }
 
     @Override
-    public Component getDisplayName() {
+    public ITextComponent getDisplayName() {
-        return new TranslatableComponent("container." + PrettyPipes.ID + ".pressurizer");
+        return new TranslationTextComponent("container." + PrettyPipes.ID + ".pressurizer");
     }
 
     @Nullable
     @Override
-    public AbstractContainerMenu createMenu(int window, Inventory inv, Player player) {
+    public Container createMenu(int window, PlayerInventory inv, PlayerEntity player) {
-        return new PressurizerContainer(Registry.pressurizerContainer, window, player, this.worldPosition);
+        return new PressurizerContainer(Registry.pressurizerContainer, window, player, this.pos);
     }
 
     @Override
@@ -107,40 +111,43 @@ public class PressurizerBlockEntity extends BlockEntity implements MenuProvider,
     }
 
     @Override
-    public void setRemoved() {
+    public void remove() {
-        super.setRemoved();
+        super.remove();
         this.lazyStorage.invalidate();
         this.lazyThis.invalidate();
     }
 
     @Override
-    public ConnectionType getConnectionType(BlockPos pipePos, Direction direction) {
+    public void tick() {
-        return ConnectionType.CONNECTED;
+        if (this.world.isRemote)
-    }
+            return;
-
-    public static void tick(Level level, BlockPos pos, BlockState state, PressurizerBlockEntity pressurizer) {
         // notify pipes in network about us
-        if (pressurizer.level.getGameTime() % 10 == 0) {
+        if (this.world.getGameTime() % 10 == 0) {
-            var network = PipeNetwork.get(pressurizer.level);
+            PipeNetwork network = PipeNetwork.get(this.world);
-            for (var dir : Direction.values()) {
+            for (Direction dir : Direction.values()) {
-                var offset = pressurizer.worldPosition.relative(dir);
+                BlockPos offset = this.pos.offset(dir);
-                for (var node : network.getOrderedNetworkNodes(offset)) {
+                for (BlockPos node : network.getOrderedNetworkNodes(offset)) {
-                    if (!pressurizer.level.isLoaded(node))
+                    if (!this.world.isBlockLoaded(node))
                         continue;
-                    var pipe = network.getPipe(node);
+                    PipeTileEntity pipe = network.getPipe(node);
                     if (pipe != null)
-                        pipe.pressurizer = pressurizer;
+                        pipe.pressurizer = this;
                 }
             }
         }
 
         // send energy update
-        if (pressurizer.lastEnergy != pressurizer.storage.getEnergyStored() && pressurizer.level.getGameTime() % 10 == 0) {
+        if (this.lastEnergy != this.storage.getEnergyStored() && this.world.getGameTime() % 10 == 0) {
-            pressurizer.lastEnergy = pressurizer.storage.getEnergyStored();
+            this.lastEnergy = this.storage.getEnergyStored();
-            Utility.sendBlockEntityToClients(pressurizer);
+            Utility.sendBlockEntityToClients(this);
         }
     }
 
+    @Override
+    public ConnectionType getConnectionType(BlockPos pipePos, Direction direction) {
+        return ConnectionType.CONNECTED;
+    }
+
     private static class ModifiableEnergyStorage extends EnergyStorage {
 
         public ModifiableEnergyStorage(int capacity, int maxReceive, int maxExtract) {
@@ -152,7 +159,7 @@ public class PressurizerBlockEntity extends BlockEntity implements MenuProvider,
         }
 
         private int extractInternal(int maxExtract, boolean simulate) {
-            var energyExtracted = Math.min(this.energy, maxExtract);
+            int energyExtracted = Math.min(this.energy, maxExtract);
             if (!simulate)
                 this.energy -= energyExtracted;
             return energyExtracted;

src/main/java/de/ellpeck/prettypipes/pressurizer/PressurizerContainer.java

@@ -2,36 +2,40 @@ package de.ellpeck.prettypipes.pressurizer;
 
 import de.ellpeck.prettypipes.Utility;
 import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.inventory.container.Container;
+import net.minecraft.inventory.container.ContainerType;
+import net.minecraft.inventory.container.Slot;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.inventory.AbstractContainerMenu;
 import net.minecraft.world.inventory.MenuType;
 import net.minecraft.world.inventory.Slot;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
 
 import javax.annotation.Nullable;
 
 public class PressurizerContainer extends AbstractContainerMenu {
-
     public final PressurizerBlockEntity tile;
 
     public PressurizerContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos) {
         super(type, id);
         this.tile = Utility.getBlockEntity(PressurizerBlockEntity.class, player.level, pos);
 
-        for (var l = 0; l < 3; ++l)
+        for (int l = 0; l < 3; ++l)
-            for (var j1 = 0; j1 < 9; ++j1)
+            for (int j1 = 0; j1 < 9; ++j1)
                 this.addSlot(new Slot(player.getInventory(), j1 + l * 9 + 9, 8 + j1 * 18, 55 + l * 18));
-        for (var i1 = 0; i1 < 9; ++i1)
+        for (int i1 = 0; i1 < 9; ++i1)
             this.addSlot(new Slot(player.getInventory(), i1, 8 + i1 * 18, 113));
     }
 
     @Override
-    public ItemStack quickMoveStack(Player player, int slotIndex) {
+    public ItemStack transferStackInSlot(PlayerEntity player, int slotIndex) {
-        return Utility.transferStackInSlot(this, this::moveItemStackTo, player, slotIndex, stack -> null);
+        return Utility.transferStackInSlot(this, this::mergeItemStack, player, slotIndex, stack -> null);
     }
 
     @Override
-    public boolean stillValid(Player player) {
+    public boolean canInteractWith(PlayerEntity playerIn) {
         return true;
     }
 }

src/main/java/de/ellpeck/prettypipes/pressurizer/PressurizerGui.java

@@ -1,43 +1,43 @@
 package de.ellpeck.prettypipes.pressurizer;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
 import de.ellpeck.prettypipes.PrettyPipes;
-import net.minecraft.client.gui.screens.inventory.AbstractContainerScreen;
+import net.minecraft.client.gui.screen.inventory.ContainerScreen;
-import net.minecraft.network.chat.Component;
+import net.minecraft.client.gui.widget.Widget;
-import net.minecraft.network.chat.TranslatableComponent;
+import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
-
+import net.minecraft.util.text.TranslationTextComponent;
-public class PressurizerGui extends AbstractContainerScreen<PressurizerContainer> {
 
+public class PressurizerGui extends ContainerScreen<PressurizerContainer> {
     private static final ResourceLocation TEXTURE = new ResourceLocation(PrettyPipes.ID, "textures/gui/pressurizer.png");
 
-    public PressurizerGui(PressurizerContainer screenContainer, Inventory inv, Component titleIn) {
+    public PressurizerGui(PressurizerContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
         super(screenContainer, inv, titleIn);
-        this.imageWidth = 176;
+        this.xSize = 176;
-        this.imageHeight = 137;
+        this.ySize = 137;
     }
 
     @Override
-    public void render(PoseStack matrix, int mouseX, int mouseY, float partialTicks) {
+    public void render(MatrixStack matrix, int mouseX, int mouseY, float partialTicks) {
         this.renderBackground(matrix);
         super.render(matrix, mouseX, mouseY, partialTicks);
-        this.renderTooltip(matrix, mouseX, mouseY);
+        this.func_230459_a_(matrix, mouseX, mouseY);
-        if (mouseX >= this.leftPos + 26 && mouseY >= this.topPos + 22 && mouseX < this.leftPos + 26 + 124 && mouseY < this.topPos + 22 + 12)
+        if (mouseX >= this.guiLeft + 26 && mouseY >= this.guiTop + 22 && mouseX < this.guiLeft + 26 + 124 && mouseY < this.guiTop + 22 + 12)
-            this.renderTooltip(matrix, new TranslatableComponent("info." + PrettyPipes.ID + ".energy", this.menu.tile.getEnergy(), this.menu.tile.getMaxEnergy()), mouseX, mouseY);
+            this.renderTooltip(matrix, new TranslationTextComponent("info." + PrettyPipes.ID + ".energy", this.container.tile.getEnergy(), this.container.tile.getMaxEnergy()), mouseX, mouseY);
     }
 
     @Override
-    protected void renderLabels(PoseStack matrix, int mouseX, int mouseY) {
+    protected void drawGuiContainerForegroundLayer(MatrixStack matrix, int mouseX, int mouseY) {
-        this.font.draw(matrix, this.playerInventoryTitle.getString(), 8, this.imageHeight - 96 + 2, 4210752);
+        this.font.drawString(matrix, this.playerInventory.getDisplayName().getString(), 8, this.ySize - 96 + 2, 4210752);
-        this.font.draw(matrix, this.title.getString(), 8, 6, 4210752);
+        this.font.drawString(matrix, this.title.getString(), 8, 6, 4210752);
     }
 
     @Override
-    protected void renderBg(PoseStack matrixStack, float partialTicks, int x, int y) {
+    protected void drawGuiContainerBackgroundLayer(MatrixStack matrixStack, float partialTicks, int x, int y) {
-        this.getMinecraft().getTextureManager().bindForSetup(TEXTURE);
+        this.getMinecraft().getTextureManager().bindTexture(TEXTURE);
-        this.blit(matrixStack, this.leftPos, this.topPos, 0, 0, 176, 137);
+        this.blit(matrixStack, this.guiLeft, this.guiTop, 0, 0, 176, 137);
-        var energy = (int) (this.menu.tile.getEnergyPercentage() * 124);
+        int energy = (int) (this.container.tile.getEnergyPercentage() * 124);
-        this.blit(matrixStack, this.leftPos + 26, this.topPos + 22, 0, 137, energy, 12);
+        this.blit(matrixStack, this.guiLeft + 26, this.guiTop + 22, 0, 137, energy, 12);
     }
 }

src/main/java/de/ellpeck/prettypipes/terminal/CraftingTerminalBlock.java

@@ -1,23 +1,16 @@
 package de.ellpeck.prettypipes.terminal;
 
-import de.ellpeck.prettypipes.Registry;
+import net.minecraft.tileentity.TileEntity;
-import net.minecraft.core.BlockPos;
+import net.minecraft.world.IBlockReader;
-import net.minecraft.world.level.Level;
+
-import net.minecraft.world.level.block.entity.BlockEntity;
+import javax.annotation.Nullable;
-import net.minecraft.world.level.block.entity.BlockEntityTicker;
-import net.minecraft.world.level.block.entity.BlockEntityType;
-import net.minecraft.world.level.block.state.BlockState;
 
 public class CraftingTerminalBlock extends ItemTerminalBlock {
 
+    @Nullable
     @Override
-    public @org.jetbrains.annotations.Nullable BlockEntity newBlockEntity(BlockPos pos, BlockState state) {
+    public TileEntity createNewTileEntity(IBlockReader worldIn) {
-        return new CraftingTerminalBlockEntity(pos, state);
+        return new CraftingTerminalTileEntity();
     }
 
-    @org.jetbrains.annotations.Nullable
-    @Override
-    public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level level, BlockState state, BlockEntityType<T> type) {
-        return createTickerHelper(type, Registry.craftingTerminalBlockEntity, ItemTerminalBlockEntity::tick);
-    }
 }

src/main/java/de/ellpeck/prettypipes/terminal/CraftingTerminalTileEntity.java

@@ -7,24 +7,25 @@ import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.Utility;
 import de.ellpeck.prettypipes.misc.EquatableItemStack;
 import de.ellpeck.prettypipes.misc.ItemEquality;
+import de.ellpeck.prettypipes.network.NetworkItem;
 import de.ellpeck.prettypipes.network.NetworkLocation;
 import de.ellpeck.prettypipes.network.PipeNetwork;
 import de.ellpeck.prettypipes.packets.PacketGhostSlot;
 import de.ellpeck.prettypipes.packets.PacketHandler;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.terminal.containers.CraftingTerminalContainer;
-import net.minecraft.ChatFormatting;
+import net.minecraft.block.BlockState;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.core.Direction;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.nbt.CompoundTag;
+import net.minecraft.inventory.container.Container;
-import net.minecraft.network.chat.Component;
-import net.minecraft.network.chat.Style;
-import net.minecraft.network.chat.TranslatableComponent;
-import net.minecraft.world.entity.player.Inventory;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.inventory.AbstractContainerMenu;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.Style;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraft.util.text.TranslationTextComponent;
 import net.minecraftforge.items.ItemHandlerHelper;
 import net.minecraftforge.items.ItemStackHandler;
 import org.apache.commons.lang3.mutable.MutableInt;
@@ -35,23 +36,23 @@ import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.Predicate;
 
-public class CraftingTerminalBlockEntity extends ItemTerminalBlockEntity {
+public class CraftingTerminalTileEntity extends ItemTerminalTileEntity {
 
     public final ItemStackHandler craftItems = new ItemStackHandler(9) {
         @Override
         protected void onContentsChanged(int slot) {
-            for (var playerEntity : CraftingTerminalBlockEntity.this.getLookingPlayers())
+            for (PlayerEntity playerEntity : CraftingTerminalTileEntity.this.getLookingPlayers())
-                playerEntity.containerMenu.slotsChanged(null);
+                playerEntity.openContainer.onCraftMatrixChanged(null);
         }
     };
     public final ItemStackHandler ghostItems = new ItemStackHandler(9);
 
-    public CraftingTerminalBlockEntity(BlockPos pos, BlockState state) {
+    public CraftingTerminalTileEntity() {
-        super(Registry.craftingTerminalBlockEntity, pos, state);
+        super(Registry.craftingTerminalTileEntity);
     }
 
     public ItemStack getRequestedCraftItem(int slot) {
-        var stack = this.craftItems.getStackInSlot(slot);
+        ItemStack stack = this.craftItems.getStackInSlot(slot);
         if (!stack.isEmpty())
             return stack;
         return this.ghostItems.getStackInSlot(slot);
@@ -63,30 +64,30 @@ public class CraftingTerminalBlockEntity extends ItemTerminalBlockEntity {
 
     public void setGhostItems(ListMultimap<Integer, ItemStack> stacks) {
         this.updateItems();
-        for (var i = 0; i < this.ghostItems.getSlots(); i++) {
+        for (int i = 0; i < this.ghostItems.getSlots(); i++) {
-            var items = stacks.get(i);
+            List<ItemStack> items = stacks.get(i);
             if (items.isEmpty()) {
                 this.ghostItems.setStackInSlot(i, ItemStack.EMPTY);
                 continue;
             }
-            var toSet = items.get(0);
+            ItemStack toSet = items.get(0);
             // if we have more than one item to choose from, we want to pick the one that we have most of in the system
             if (items.size() > 1) {
-                var highestAmount = 0;
+                int highestAmount = 0;
-                for (var stack : items) {
+                for (ItemStack stack : items) {
-                    var amount = 0;
+                    int amount = 0;
                     // check existing items
-                    var network = this.networkItems.get(new EquatableItemStack(stack, ItemEquality.NBT));
+                    NetworkItem network = this.networkItems.get(new EquatableItemStack(stack, ItemEquality.NBT));
                     if (network != null) {
                         amount = network.getLocations().stream()
-                                .mapToInt(l -> l.getItemAmount(this.level, stack, ItemEquality.NBT))
+                                .mapToInt(l -> l.getItemAmount(this.world, stack, ItemEquality.NBT))
                                 .sum();
                     }
                     // check craftables
                     if (amount <= 0 && highestAmount <= 0) {
-                        var pipe = this.getConnectedPipe();
+                        PipeTileEntity pipe = this.getConnectedPipe();
                         if (pipe != null)
-                            amount = PipeNetwork.get(this.level).getCraftableAmount(pipe.getBlockPos(), null, stack, new Stack<>(), ItemEquality.NBT);
+                            amount = PipeNetwork.get(this.world).getCraftableAmount(pipe.getPos(), null, stack, new Stack<>(), ItemEquality.NBT);
                     }
                     if (amount > highestAmount) {
                         highestAmount = amount;
@@ -97,77 +98,77 @@ public class CraftingTerminalBlockEntity extends ItemTerminalBlockEntity {
             this.ghostItems.setStackInSlot(i, toSet.copy());
         }
 
-        if (!this.level.isClientSide) {
+        if (!this.world.isRemote) {
             ListMultimap<Integer, ItemStack> clients = ArrayListMultimap.create();
-            for (var i = 0; i < this.ghostItems.getSlots(); i++)
+            for (int i = 0; i < this.ghostItems.getSlots(); i++)
                 clients.put(i, this.ghostItems.getStackInSlot(i));
-            PacketHandler.sendToAllLoaded(this.level, this.getBlockPos(), new PacketGhostSlot(this.getBlockPos(), clients));
+            PacketHandler.sendToAllLoaded(this.world, this.pos, new PacketGhostSlot(this.pos, clients));
         }
     }
 
-    public void requestCraftingItems(Player player, int maxAmount) {
+    public void requestCraftingItems(PlayerEntity player, int maxAmount) {
-        var pipe = this.getConnectedPipe();
+        PipeTileEntity pipe = this.getConnectedPipe();
         if (pipe == null)
             return;
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
         network.startProfile("terminal_request_crafting");
         this.updateItems();
         // get the amount of crafts that we can do
-        var lowestAvailable = getAvailableCrafts(pipe, this.craftItems.getSlots(), i -> ItemHandlerHelper.copyStackWithSize(this.getRequestedCraftItem(i), 1), this::isGhostItem, s -> {
+        int lowestAvailable = getAvailableCrafts(pipe, this.craftItems.getSlots(), i -> ItemHandlerHelper.copyStackWithSize(this.getRequestedCraftItem(i), 1), this::isGhostItem, s -> {
-            var item = this.networkItems.get(s);
+            NetworkItem item = this.networkItems.get(s);
             return item != null ? item.getLocations() : Collections.emptyList();
         }, onItemUnavailable(player), new Stack<>(), ItemEquality.NBT);
         if (lowestAvailable > 0) {
             // if we're limiting the amount, pretend we only have that amount available
             if (maxAmount < lowestAvailable)
                 lowestAvailable = maxAmount;
-            for (var i = 0; i < this.craftItems.getSlots(); i++) {
+            for (int i = 0; i < this.craftItems.getSlots(); i++) {
-                var requested = this.getRequestedCraftItem(i);
+                ItemStack requested = this.getRequestedCraftItem(i);
                 if (requested.isEmpty())
                     continue;
                 requested = requested.copy();
                 requested.setCount(lowestAvailable);
                 this.requestItemImpl(requested, onItemUnavailable(player));
             }
-            player.sendMessage(new TranslatableComponent("info." + PrettyPipes.ID + ".sending_ingredients", lowestAvailable).setStyle(Style.EMPTY.applyFormat(ChatFormatting.GREEN)), UUID.randomUUID());
+            player.sendMessage(new TranslationTextComponent("info." + PrettyPipes.ID + ".sending_ingredients", lowestAvailable).setStyle(Style.EMPTY.setFormatting(TextFormatting.GREEN)), UUID.randomUUID());
         }
         network.endProfile();
     }
 
     @Override
-    public CompoundTag save(CompoundTag compound) {
+    public CompoundTag write(CompoundTag compound) {
         compound.put("craft_items", this.craftItems.serializeNBT());
-        return super.save(compound);
+        return super.write(compound);
     }
 
     @Override
-    public void load(CompoundTag compound) {
+    public void read(BlockState state, CompoundTag compound) {
         this.craftItems.deserializeNBT(compound.getCompound("craft_items"));
-        super.load(compound);
+        super.read(state, compound);
     }
 
     @Override
-    public Component getDisplayName() {
+    public ITextComponent getDisplayName() {
-        return new TranslatableComponent("container." + PrettyPipes.ID + ".crafting_terminal");
+        return new TranslationTextComponent("container." + PrettyPipes.ID + ".crafting_terminal");
     }
 
     @Nullable
     @Override
-    public AbstractContainerMenu createMenu(int window, Inventory inv, Player player) {
+    public Container createMenu(int window, PlayerInventory inv, PlayerEntity player) {
-        return new CraftingTerminalContainer(Registry.craftingTerminalContainer, window, player, this.worldPosition);
+        return new CraftingTerminalContainer(Registry.craftingTerminalContainer, window, player, this.pos);
     }
 
     @Override
     public ItemStack insertItem(BlockPos pipePos, Direction direction, ItemStack remain, boolean simulate) {
-        var pos = pipePos.relative(direction);
+        BlockPos pos = pipePos.offset(direction);
-        var tile = Utility.getBlockEntity(CraftingTerminalBlockEntity.class, this.level, pos);
+        CraftingTerminalTileEntity tile = Utility.getBlockEntity(CraftingTerminalTileEntity.class, this.world, pos);
         if (tile != null) {
             remain = remain.copy();
-            var lowestSlot = -1;
+            int lowestSlot = -1;
             do {
-                for (var i = 0; i < tile.craftItems.getSlots(); i++) {
+                for (int i = 0; i < tile.craftItems.getSlots(); i++) {
-                    var stack = tile.getRequestedCraftItem(i);
+                    ItemStack stack = tile.getRequestedCraftItem(i);
-                    var count = tile.isGhostItem(i) ? 0 : stack.getCount();
+                    int count = tile.isGhostItem(i) ? 0 : stack.getCount();
                     if (!ItemHandlerHelper.canItemStacksStack(stack, remain))
                         continue;
                     // ensure that a single non-stackable item can still enter a ghost slot
@@ -177,7 +178,7 @@ public class CraftingTerminalBlockEntity extends ItemTerminalBlockEntity {
                         lowestSlot = i;
                 }
                 if (lowestSlot >= 0) {
-                    var copy = remain.copy();
+                    ItemStack copy = remain.copy();
                     copy.setCount(1);
                     // if there were remaining items inserting into the slot with lowest contents, we're overflowing
                     if (tile.craftItems.insertItem(lowestSlot, copy, simulate).getCount() > 0)
@@ -193,33 +194,33 @@ public class CraftingTerminalBlockEntity extends ItemTerminalBlockEntity {
         return remain;
     }
 
-    public static int getAvailableCrafts(PipeBlockEntity tile, int slots, Function<Integer, ItemStack> inputFunction, Predicate<Integer> isGhost, Function<EquatableItemStack, Collection<NetworkLocation>> locationsFunction, Consumer<ItemStack> unavailableConsumer, Stack<ItemStack> dependencyChain, ItemEquality... equalityTypes) {
+    public static int getAvailableCrafts(PipeTileEntity tile, int slots, Function<Integer, ItemStack> inputFunction, Predicate<Integer> isGhost, Function<EquatableItemStack, Collection<NetworkLocation>> locationsFunction, Consumer<ItemStack> unavailableConsumer, Stack<ItemStack> dependencyChain, ItemEquality... equalityTypes) {
-        var network = PipeNetwork.get(tile.getLevel());
+        PipeNetwork network = PipeNetwork.get(tile.getWorld());
         // the highest amount we can craft with the items we have
-        var lowestAvailable = Integer.MAX_VALUE;
+        int lowestAvailable = Integer.MAX_VALUE;
         // this is the amount of items required for each ingredient when crafting ONE
         Map<EquatableItemStack, MutableInt> requiredItems = new HashMap<>();
-        for (var i = 0; i < slots; i++) {
+        for (int i = 0; i < slots; i++) {
-            var requested = inputFunction.apply(i);
+            ItemStack requested = inputFunction.apply(i);
             if (requested.isEmpty())
                 continue;
-            var amount = requiredItems.computeIfAbsent(new EquatableItemStack(requested, equalityTypes), s -> new MutableInt());
+            MutableInt amount = requiredItems.computeIfAbsent(new EquatableItemStack(requested, equalityTypes), s -> new MutableInt());
             amount.add(requested.getCount());
             // if no items fit into the crafting input, we still want to pretend they do for requesting
-            var fit = Math.max(requested.getMaxStackSize() - (isGhost.test(i) ? 0 : requested.getCount()), 1);
+            int fit = Math.max(requested.getMaxStackSize() - (isGhost.test(i) ? 0 : requested.getCount()), 1);
             if (lowestAvailable > fit)
                 lowestAvailable = fit;
         }
-        for (var entry : requiredItems.entrySet()) {
+        for (Map.Entry<EquatableItemStack, MutableInt> entry : requiredItems.entrySet()) {
-            var stack = entry.getKey();
+            EquatableItemStack stack = entry.getKey();
 
             // total amount of available items of this type
-            var available = 0;
+            int available = 0;
-            for (var location : locationsFunction.apply(stack)) {
+            for (NetworkLocation location : locationsFunction.apply(stack)) {
-                var amount = location.getItemAmount(tile.getLevel(), stack.stack(), equalityTypes);
+                int amount = location.getItemAmount(tile.getWorld(), stack.stack, equalityTypes);
                 if (amount <= 0)
                     continue;
-                amount -= network.getLockedAmount(location.getPos(), stack.stack(), null, equalityTypes);
+                amount -= network.getLockedAmount(location.getPos(), stack.stack, null, equalityTypes);
                 available += amount;
             }
             // divide the total by the amount required to get the amount that
@@ -228,17 +229,17 @@ public class CraftingTerminalBlockEntity extends ItemTerminalBlockEntity {
 
             // check how many craftable items we have and add those on if we need to
             if (available < lowestAvailable) {
-                var craftable = network.getCraftableAmount(tile.getBlockPos(), unavailableConsumer, stack.stack(), dependencyChain, equalityTypes);
+                int craftable = network.getCraftableAmount(tile.getPos(), unavailableConsumer, stack.stack, dependencyChain, equalityTypes);
                 if (craftable > 0)
                     available += craftable / entry.getValue().intValue();
             }
 
-            // clamp to the lowest available
+            // clamp to lowest available
             if (available < lowestAvailable)
                 lowestAvailable = available;
 
             if (available <= 0 && unavailableConsumer != null)
-                unavailableConsumer.accept(stack.stack());
+                unavailableConsumer.accept(stack.stack);
         }
         return lowestAvailable;
     }

src/main/java/de/ellpeck/prettypipes/terminal/ItemTerminalBlock.java

@@ -1,88 +1,79 @@
 package de.ellpeck.prettypipes.terminal;
 
-import de.ellpeck.prettypipes.Registry;
 import de.ellpeck.prettypipes.Utility;
-import net.minecraft.ChatFormatting;
+import net.minecraft.block.BlockRenderType;
-import net.minecraft.core.BlockPos;
+import net.minecraft.block.BlockState;
-import net.minecraft.network.chat.Component;
+import net.minecraft.block.ContainerBlock;
-import net.minecraft.network.chat.TranslatableComponent;
+import net.minecraft.block.SoundType;
-import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.block.material.Material;
-import net.minecraft.world.InteractionHand;
+import net.minecraft.client.util.ITooltipFlag;
-import net.minecraft.world.InteractionResult;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.ServerPlayerEntity;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.TooltipFlag;
+import net.minecraft.tileentity.TileEntity;
-import net.minecraft.world.level.BlockGetter;
+import net.minecraft.util.ActionResultType;
-import net.minecraft.world.level.Level;
+import net.minecraft.util.Direction;
-import net.minecraft.world.level.block.BaseEntityBlock;
+import net.minecraft.util.Hand;
-import net.minecraft.world.level.block.RenderShape;
+import net.minecraft.util.math.BlockPos;
-import net.minecraft.world.level.block.SoundType;
+import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.util.text.ITextComponent;
-import net.minecraft.world.level.block.entity.BlockEntityTicker;
+import net.minecraft.util.text.TextFormatting;
-import net.minecraft.world.level.block.entity.BlockEntityType;
+import net.minecraft.util.text.TranslationTextComponent;
-import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.IBlockReader;
-import net.minecraft.world.level.material.Material;
+import net.minecraft.world.World;
-import net.minecraft.world.phys.BlockHitResult;
+import net.minecraftforge.fml.network.NetworkHooks;
-import net.minecraftforge.network.NetworkHooks;
 
 import javax.annotation.Nullable;
 import java.util.List;
 import java.util.UUID;
 
-public class ItemTerminalBlock extends BaseEntityBlock {
+public class ItemTerminalBlock extends ContainerBlock {
 
     public ItemTerminalBlock() {
-        super(Properties.of(Material.STONE).strength(3).sound(SoundType.STONE));
+        super(Properties.create(Material.ROCK).hardnessAndResistance(3).sound(SoundType.STONE));
     }
 
     @Override
-    public InteractionResult use(BlockState state, Level worldIn, BlockPos pos, Player player, InteractionHand handIn, BlockHitResult result) {
+    public ActionResultType onBlockActivated(BlockState state, World worldIn, BlockPos pos, PlayerEntity player, Hand handIn, BlockRayTraceResult result) {
-        var tile = Utility.getBlockEntity(ItemTerminalBlockEntity.class, worldIn, pos);
+        ItemTerminalTileEntity tile = Utility.getBlockEntity(ItemTerminalTileEntity.class, worldIn, pos);
         if (tile == null)
-            return InteractionResult.PASS;
+            return ActionResultType.PASS;
-        var reason = tile.getInvalidTerminalReason();
+        String reason = tile.getInvalidTerminalReason();
         if (reason != null) {
-            if (!worldIn.isClientSide)
+            if (!worldIn.isRemote)
-                player.sendMessage(new TranslatableComponent(reason).withStyle(ChatFormatting.RED), UUID.randomUUID());
+                player.sendMessage(new TranslationTextComponent(reason).mergeStyle(TextFormatting.RED), UUID.randomUUID());
-            return InteractionResult.SUCCESS;
+            return ActionResultType.SUCCESS;
         }
-        if (!worldIn.isClientSide) {
+        if (!worldIn.isRemote) {
-            NetworkHooks.openGui((ServerPlayer) player, tile, pos);
+            NetworkHooks.openGui((ServerPlayerEntity) player, tile, pos);
             tile.updateItems(player);
         }
-        return InteractionResult.SUCCESS;
+        return ActionResultType.SUCCESS;
     }
 
     @Override
-    public void onRemove(BlockState state, Level worldIn, BlockPos pos, BlockState newState, boolean isMoving) {
+    public void onReplaced(BlockState state, World worldIn, BlockPos pos, BlockState newState, boolean isMoving) {
         if (state.getBlock() != newState.getBlock()) {
-            var tile = Utility.getBlockEntity(ItemTerminalBlockEntity.class, worldIn, pos);
+            ItemTerminalTileEntity tile = Utility.getBlockEntity(ItemTerminalTileEntity.class, worldIn, pos);
             if (tile != null)
                 Utility.dropInventory(tile, tile.items);
-            super.onRemove(state, worldIn, pos, newState, isMoving);
+            super.onReplaced(state, worldIn, pos, newState, isMoving);
         }
     }
 
-    @org.jetbrains.annotations.Nullable
+    @Nullable
     @Override
-    public BlockEntity newBlockEntity(BlockPos pos, BlockState state) {
+    public TileEntity createNewTileEntity(IBlockReader worldIn) {
-        return new ItemTerminalBlockEntity(pos, state);
+        return new ItemTerminalTileEntity();
     }
 
     @Override
-    public RenderShape getRenderShape(BlockState state) {
+    public BlockRenderType getRenderType(BlockState state) {
-        return RenderShape.MODEL;
+        return BlockRenderType.MODEL;
     }
 
     @Override
-    public void appendHoverText(ItemStack stack, @Nullable BlockGetter worldIn, List<Component> tooltip, TooltipFlag flagIn) {
+    public void addInformation(ItemStack stack, @Nullable IBlockReader worldIn, List<ITextComponent> tooltip, ITooltipFlag flagIn) {
         Utility.addTooltip(this.getRegistryName().getPath(), tooltip);
     }
-
-    @org.jetbrains.annotations.Nullable
-    @Override
-    public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level level, BlockState state, BlockEntityType<T> type) {
-        return createTickerHelper(type, Registry.itemTerminalBlockEntity, ItemTerminalBlockEntity::tick);
-    }
-
 }

src/main/java/de/ellpeck/prettypipes/terminal/ItemTerminalTileEntity.java

@@ -13,26 +13,27 @@ import de.ellpeck.prettypipes.packets.PacketHandler;
 import de.ellpeck.prettypipes.packets.PacketNetworkItems;
 import de.ellpeck.prettypipes.pipe.ConnectionType;
 import de.ellpeck.prettypipes.pipe.IPipeConnectable;
-import de.ellpeck.prettypipes.pipe.PipeBlockEntity;
+import de.ellpeck.prettypipes.pipe.PipeTileEntity;
 import de.ellpeck.prettypipes.terminal.containers.ItemTerminalContainer;
-import net.minecraft.ChatFormatting;
+import net.minecraft.block.BlockState;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.core.Direction;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.nbt.CompoundTag;
+import net.minecraft.inventory.container.Container;
-import net.minecraft.nbt.Tag;
+import net.minecraft.inventory.container.INamedContainerProvider;
-import net.minecraft.network.chat.Component;
-import net.minecraft.network.chat.Style;
-import net.minecraft.network.chat.TranslatableComponent;
-import net.minecraft.world.MenuProvider;
-import net.minecraft.world.entity.player.Inventory;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.inventory.AbstractContainerMenu;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.Level;
+import net.minecraft.nbt.CompoundTag;
-import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.tileentity.ITickableTileEntity;
-import net.minecraft.world.level.block.entity.BlockEntityType;
+import net.minecraft.tileentity.TileEntity;
-import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.tileentity.TileEntityType;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.Style;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraft.util.text.TranslationTextComponent;
+import net.minecraft.world.World;
 import net.minecraftforge.common.capabilities.Capability;
+import net.minecraftforge.common.util.Constants.NBT;
 import net.minecraftforge.common.util.LazyOptional;
 import net.minecraftforge.items.ItemHandlerHelper;
 import net.minecraftforge.items.ItemStackHandler;
@@ -44,7 +45,7 @@ import java.util.*;
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
 
-public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnectable, MenuProvider {
+public class ItemTerminalTileEntity extends TileEntity implements INamedContainerProvider, ITickableTileEntity, IPipeConnectable {
 
     public final ItemStackHandler items = new ItemStackHandler(12) {
         @Override
@@ -56,64 +57,65 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
     private final Queue<NetworkLock> existingRequests = new LinkedList<>();
     private final LazyOptional<IPipeConnectable> lazyThis = LazyOptional.of(() -> this);
 
-    public ItemTerminalBlockEntity(BlockEntityType<?> type, BlockPos pos, BlockState state) {
+    protected ItemTerminalTileEntity(TileEntityType<?> tileEntityTypeIn) {
-        super(type, pos, state);
+        super(tileEntityTypeIn);
     }
 
-    public ItemTerminalBlockEntity(BlockPos pos, BlockState state) {
+    public ItemTerminalTileEntity() {
-        this(Registry.itemTerminalBlockEntity, pos, state);
+        this(Registry.itemTerminalTileEntity);
     }
 
-    public static void tick(Level level, BlockPos pos, BlockState state, ItemTerminalBlockEntity terminal) {
+    @Override
-        if (terminal.level.isClientSide)
+    public void tick() {
+        if (this.world.isRemote)
             return;
-        var network = PipeNetwork.get(terminal.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
-        var pipe = terminal.getConnectedPipe();
+        PipeTileEntity pipe = this.getConnectedPipe();
         if (pipe == null)
             return;
 
-        var update = false;
+        boolean update = false;
-        var interval = pipe.pressurizer != null ? 2 : 10;
+        int interval = pipe.pressurizer != null ? 2 : 10;
-        if (terminal.level.getGameTime() % interval == 0) {
+        if (this.world.getGameTime() % interval == 0) {
-            for (var i = 6; i < 12; i++) {
+            for (int i = 6; i < 12; i++) {
-                var extracted = terminal.items.extractItem(i, Integer.MAX_VALUE, true);
+                ItemStack extracted = this.items.extractItem(i, Integer.MAX_VALUE, true);
                 if (extracted.isEmpty())
                     continue;
-                var remain = network.routeItem(pipe.getBlockPos(), terminal.getBlockPos(), extracted, true);
+                ItemStack remain = network.routeItem(pipe.getPos(), this.pos, extracted, true);
                 if (remain.getCount() == extracted.getCount())
                     continue;
-                terminal.items.extractItem(i, extracted.getCount() - remain.getCount(), false);
+                this.items.extractItem(i, extracted.getCount() - remain.getCount(), false);
                 break;
             }
 
-            if (!terminal.existingRequests.isEmpty()) {
+            if (!this.existingRequests.isEmpty()) {
-                var request = terminal.existingRequests.remove();
+                NetworkLock request = this.existingRequests.remove();
                 network.resolveNetworkLock(request);
-                network.requestExistingItem(request.location, pipe.getBlockPos(), terminal.getBlockPos(), request, request.stack, ItemEquality.NBT);
+                network.requestExistingItem(request.location, pipe.getPos(), this.pos, request, request.stack, ItemEquality.NBT);
                 update = true;
             }
         }
 
-        if (terminal.level.getGameTime() % 100 == 0 || update) {
+        if (this.world.getGameTime() % 100 == 0 || update) {
-            var lookingPlayers = terminal.getLookingPlayers();
+            PlayerEntity[] lookingPlayers = this.getLookingPlayers();
             if (lookingPlayers.length > 0)
-                terminal.updateItems(lookingPlayers);
+                this.updateItems(lookingPlayers);
         }
     }
 
     @Override
-    public void setRemoved() {
+    public void remove() {
-        super.setRemoved();
+        super.remove();
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
-        for (var lock : this.existingRequests)
+        for (NetworkLock lock : this.existingRequests)
             network.resolveNetworkLock(lock);
         this.lazyThis.invalidate();
     }
 
     public String getInvalidTerminalReason() {
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
-        var pipes = Arrays.stream(Direction.values())
+        long pipes = Arrays.stream(Direction.values())
-                .map(d -> network.getPipe(this.worldPosition.relative(d)))
+                .map(d -> network.getPipe(this.pos.offset(d)))
                 .filter(Objects::nonNull).count();
         if (pipes <= 0)
             return "info." + PrettyPipes.ID + ".no_pipe_connected";
@@ -122,42 +124,43 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
         return null;
     }
 
-    public PipeBlockEntity getConnectedPipe() {
+    public PipeTileEntity getConnectedPipe() {
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
-        for (var dir : Direction.values()) {
+        for (Direction dir : Direction.values()) {
-            var pipe = network.getPipe(this.worldPosition.relative(dir));
+            PipeTileEntity pipe = network.getPipe(this.pos.offset(dir));
             if (pipe != null)
                 return pipe;
         }
         return null;
     }
 
-    public void updateItems(Player... playersToSync) {
+    public void updateItems(PlayerEntity... playersToSync) {
-        var pipe = this.getConnectedPipe();
+        PipeTileEntity pipe = this.getConnectedPipe();
         if (pipe == null)
             return;
         this.networkItems = this.collectItems(ItemEquality.NBT);
         if (playersToSync.length > 0) {
-            var clientItems = this.networkItems.values().stream().map(NetworkItem::asStack).collect(Collectors.toList());
+            List<ItemStack> clientItems = this.networkItems.values().stream().map(NetworkItem::asStack).collect(Collectors.toList());
-            var clientCraftables = PipeNetwork.get(this.level).getAllCraftables(pipe.getBlockPos()).stream().map(Pair::getRight).collect(Collectors.toList());
+            List<ItemStack> clientCraftables = PipeNetwork.get(this.world).getAllCraftables(pipe.getPos()).stream().map(Pair::getRight).collect(Collectors.toList());
-            var currentlyCrafting = this.getCurrentlyCrafting().stream().sorted(Comparator.comparingInt(ItemStack::getCount).reversed()).collect(Collectors.toList());
+            List<ItemStack> currentlyCrafting = this.getCurrentlyCrafting().stream().sorted(Comparator.comparingInt(ItemStack::getCount).reversed()).collect(Collectors.toList());
-            for (var player : playersToSync) {
+            for (PlayerEntity player : playersToSync) {
-                if (!(player.containerMenu instanceof ItemTerminalContainer container))
+                if (!(player.openContainer instanceof ItemTerminalContainer))
                     continue;
-                if (container.tile != this)
+                ItemTerminalTileEntity tile = ((ItemTerminalContainer) player.openContainer).tile;
+                if (tile != this)
                     continue;
                 PacketHandler.sendTo(player, new PacketNetworkItems(clientItems, clientCraftables, currentlyCrafting));
             }
         }
     }
 
-    public void requestItem(Player player, ItemStack stack) {
+    public void requestItem(PlayerEntity player, ItemStack stack) {
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
         network.startProfile("terminal_request_item");
         this.updateItems();
-        var requested = this.requestItemImpl(stack, onItemUnavailable(player));
+        int requested = this.requestItemImpl(stack, onItemUnavailable(player));
         if (requested > 0) {
-            player.sendMessage(new TranslatableComponent("info." + PrettyPipes.ID + ".sending", requested, stack.getDisplayName()).setStyle(Style.EMPTY.applyFormat(ChatFormatting.GREEN)), UUID.randomUUID());
+            player.sendMessage(new TranslationTextComponent("info." + PrettyPipes.ID + ".sending", requested, stack.getDisplayName()).setStyle(Style.EMPTY.setFormatting(TextFormatting.GREEN)), UUID.randomUUID());
         } else {
             onItemUnavailable(player).accept(stack);
         }
@@ -165,29 +168,32 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
     }
 
     public int requestItemImpl(ItemStack stack, Consumer<ItemStack> unavailableConsumer) {
-        var item = this.networkItems.get(new EquatableItemStack(stack, ItemEquality.NBT));
+        NetworkItem item = this.networkItems.get(new EquatableItemStack(stack, ItemEquality.NBT));
         Collection<NetworkLocation> locations = item == null ? Collections.emptyList() : item.getLocations();
-        var ret = requestItemLater(this.level, this.getConnectedPipe().getBlockPos(), locations, unavailableConsumer, stack, new Stack<>(), ItemEquality.NBT);
+        Pair<List<NetworkLock>, ItemStack> ret = requestItemLater(this.world, this.getConnectedPipe().getPos(), locations, unavailableConsumer, stack, new Stack<>(), ItemEquality.NBT);
         this.existingRequests.addAll(ret.getLeft());
         return stack.getCount() - ret.getRight().getCount();
     }
 
-    protected Player[] getLookingPlayers() {
+    protected PlayerEntity[] getLookingPlayers() {
-        return this.level.players().stream().filter(p -> p.containerMenu instanceof ItemTerminalContainer container && container.tile == this).toArray(Player[]::new);
+        return this.world.getPlayers().stream()
+                .filter(p -> p.openContainer instanceof ItemTerminalContainer)
+                .filter(p -> ((ItemTerminalContainer) p.openContainer).tile == this)
+                .toArray(PlayerEntity[]::new);
     }
 
     private Map<EquatableItemStack, NetworkItem> collectItems(ItemEquality... equalityTypes) {
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
         network.startProfile("terminal_collect_items");
-        var pipe = this.getConnectedPipe();
+        PipeTileEntity pipe = this.getConnectedPipe();
         Map<EquatableItemStack, NetworkItem> items = new HashMap<>();
-        for (var location : network.getOrderedNetworkItems(pipe.getBlockPos())) {
+        for (NetworkLocation location : network.getOrderedNetworkItems(pipe.getPos())) {
-            for (var entry : location.getItems(this.level).entrySet()) {
+            for (Map.Entry<Integer, ItemStack> entry : location.getItems(this.world).entrySet()) {
                 // make sure we can extract from this slot to display it
-                if (!location.canExtract(this.level, entry.getKey()))
+                if (!location.canExtract(this.world, entry.getKey()))
                     continue;
-                var equatable = new EquatableItemStack(entry.getValue(), equalityTypes);
+                EquatableItemStack equatable = new EquatableItemStack(entry.getValue(), equalityTypes);
-                var item = items.computeIfAbsent(equatable, NetworkItem::new);
+                NetworkItem item = items.computeIfAbsent(equatable, NetworkItem::new);
                 item.add(location, entry.getValue());
             }
         }
@@ -196,57 +202,57 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
     }
 
     private List<ItemStack> getCurrentlyCrafting() {
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
-        var pipe = this.getConnectedPipe();
+        PipeTileEntity pipe = this.getConnectedPipe();
         if (pipe == null)
             return Collections.emptyList();
-        var crafting = network.getCurrentlyCrafting(pipe.getBlockPos());
+        List<Pair<BlockPos, ItemStack>> crafting = network.getCurrentlyCrafting(pipe.getPos());
         return crafting.stream().map(Pair::getRight).collect(Collectors.toList());
     }
 
     public void cancelCrafting() {
-        var network = PipeNetwork.get(this.level);
+        PipeNetwork network = PipeNetwork.get(this.world);
-        var pipe = this.getConnectedPipe();
+        PipeTileEntity pipe = this.getConnectedPipe();
         if (pipe == null)
             return;
-        for (var craftable : network.getAllCraftables(pipe.getBlockPos())) {
+        for (Pair<BlockPos, ItemStack> craftable : network.getAllCraftables(pipe.getPos())) {
-            var otherPipe = network.getPipe(craftable.getLeft());
+            PipeTileEntity otherPipe = network.getPipe(craftable.getLeft());
             if (otherPipe != null) {
-                for (var lock : otherPipe.craftIngredientRequests)
+                for (NetworkLock lock : otherPipe.craftIngredientRequests)
                     network.resolveNetworkLock(lock);
                 otherPipe.craftIngredientRequests.clear();
                 otherPipe.craftResultRequests.clear();
             }
         }
-        var lookingPlayers = this.getLookingPlayers();
+        PlayerEntity[] lookingPlayers = this.getLookingPlayers();
         if (lookingPlayers.length > 0)
             this.updateItems(lookingPlayers);
     }
 
     @Override
-    public CompoundTag save(CompoundTag compound) {
+    public CompoundTag write(CompoundTag compound) {
         compound.put("items", this.items.serializeNBT());
         compound.put("requests", Utility.serializeAll(this.existingRequests));
-        return super.save(compound);
+        return super.write(compound);
     }
 
     @Override
-    public void load(CompoundTag compound) {
+    public void read(BlockState state, CompoundTag compound) {
         this.items.deserializeNBT(compound.getCompound("items"));
         this.existingRequests.clear();
-        this.existingRequests.addAll(Utility.deserializeAll(compound.getList("requests", Tag.TAG_COMPOUND), NetworkLock::new));
+        this.existingRequests.addAll(Utility.deserializeAll(compound.getList("requests", NBT.TAG_COMPOUND), NetworkLock::new));
-        super.load(compound);
+        super.read(state, compound);
     }
 
     @Override
-    public Component getDisplayName() {
+    public ITextComponent getDisplayName() {
-        return new TranslatableComponent("container." + PrettyPipes.ID + ".item_terminal");
+        return new TranslationTextComponent("container." + PrettyPipes.ID + ".item_terminal");
     }
 
     @Nullable
     @Override
-    public AbstractContainerMenu createMenu(int window, Inventory inv, Player player) {
+    public Container createMenu(int window, PlayerInventory inv, PlayerEntity player) {
-        return new ItemTerminalContainer(Registry.itemTerminalContainer, window, player, this.worldPosition);
+        return new ItemTerminalContainer(Registry.itemTerminalContainer, window, player, this.pos);
     }
 
     @Override
@@ -263,8 +269,8 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
 
     @Override
     public ItemStack insertItem(BlockPos pipePos, Direction direction, ItemStack stack, boolean simulate) {
-        var pos = pipePos.relative(direction);
+        BlockPos pos = pipePos.offset(direction);
-        var tile = Utility.getBlockEntity(ItemTerminalBlockEntity.class, this.level, pos);
+        ItemTerminalTileEntity tile = Utility.getBlockEntity(ItemTerminalTileEntity.class, world, pos);
         if (tile != null)
             return ItemHandlerHelper.insertItemStacked(tile.items, stack, simulate);
         return stack;
@@ -275,13 +281,13 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
         return true;
     }
 
-    public static Pair<List<NetworkLock>, ItemStack> requestItemLater(Level world, BlockPos destPipe, Collection<NetworkLocation> locations, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain, ItemEquality... equalityTypes) {
+    public static Pair<List<NetworkLock>, ItemStack> requestItemLater(World world, BlockPos destPipe, Collection<NetworkLocation> locations, Consumer<ItemStack> unavailableConsumer, ItemStack stack, Stack<ItemStack> dependencyChain, ItemEquality... equalityTypes) {
         List<NetworkLock> requests = new ArrayList<>();
-        var remain = stack.copy();
+        ItemStack remain = stack.copy();
-        var network = PipeNetwork.get(world);
+        PipeNetwork network = PipeNetwork.get(world);
         // check for existing items
-        for (var location : locations) {
+        for (NetworkLocation location : locations) {
-            var amount = location.getItemAmount(world, stack, equalityTypes);
+            int amount = location.getItemAmount(world, stack, equalityTypes);
             if (amount <= 0)
                 continue;
             amount -= network.getLockedAmount(location.getPos(), stack, null, equalityTypes);
@@ -290,9 +296,9 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
                     amount = remain.getCount();
                 remain.shrink(amount);
                 while (amount > 0) {
-                    var copy = stack.copy();
+                    ItemStack copy = stack.copy();
                     copy.setCount(Math.min(stack.getMaxStackSize(), amount));
-                    var lock = new NetworkLock(location, copy);
+                    NetworkLock lock = new NetworkLock(location, copy);
                     network.createNetworkLock(lock);
                     requests.add(lock);
                     amount -= copy.getCount();
@@ -307,7 +313,7 @@ public class ItemTerminalBlockEntity extends BlockEntity implements IPipeConnect
         return Pair.of(requests, remain);
     }
 
-    public static Consumer<ItemStack> onItemUnavailable(Player player) {
+    public static Consumer<ItemStack> onItemUnavailable(PlayerEntity player) {
-        return s -> player.sendMessage(new TranslatableComponent("info." + PrettyPipes.ID + ".not_found", s.getDisplayName()).setStyle(Style.EMPTY.applyFormat(ChatFormatting.RED)), UUID.randomUUID());
+        return s -> player.sendMessage(new TranslationTextComponent("info." + PrettyPipes.ID + ".not_found", s.getDisplayName()).setStyle(Style.EMPTY.setFormatting(TextFormatting.RED)), UUID.randomUUID());
     }
 }

src/main/java/de/ellpeck/prettypipes/terminal/containers/CraftingTerminalContainer.java

@@ -1,57 +1,64 @@
 package de.ellpeck.prettypipes.terminal.containers;
 
 import de.ellpeck.prettypipes.Utility;
-import de.ellpeck.prettypipes.terminal.CraftingTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.CraftingTerminalTileEntity;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.network.protocol.game.ClientboundContainerSetSlotPacket;
+import net.minecraft.entity.player.ServerPlayerEntity;
-import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.inventory.CraftResultInventory;
-import net.minecraft.world.Container;
+import net.minecraft.inventory.CraftingInventory;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.inventory.IInventory;
-import net.minecraft.world.inventory.*;
+import net.minecraft.inventory.container.ClickType;
+import net.minecraft.inventory.container.ContainerType;
+import net.minecraft.inventory.container.CraftingResultSlot;
+import net.minecraft.inventory.container.Slot;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.crafting.RecipeType;
+import net.minecraft.item.crafting.ICraftingRecipe;
+import net.minecraft.item.crafting.IRecipeType;
+import net.minecraft.network.play.server.SSetSlotPacket;
+import net.minecraft.util.math.BlockPos;
 import org.apache.commons.lang3.tuple.Pair;
 
 import javax.annotation.Nullable;
+import java.util.Optional;
 
 public class CraftingTerminalContainer extends ItemTerminalContainer {
 
-    public CraftingContainer craftInventory;
+    public CraftingInventory craftInventory;
-    public ResultContainer craftResult;
+    public CraftResultInventory craftResult;
-    private final Player player;
+    private final PlayerEntity player;
 
-    public CraftingTerminalContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos) {
+    public CraftingTerminalContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos) {
         super(type, id, player, pos);
         this.player = player;
-        this.slotsChanged(this.craftInventory);
+        this.onCraftMatrixChanged(this.craftInventory);
     }
 
     @Override
-    protected void addDataSlots(ContainerData data) {
+    protected void addOwnSlots(PlayerEntity player) {
         this.craftInventory = new WrappedCraftingInventory(this.getTile().craftItems, this, 3, 3);
-        this.craftResult = new ResultContainer();
+        this.craftResult = new CraftResultInventory();
-        this.addSlot(new ResultSlot(this.player, this.craftInventory, this.craftResult, 0, 25, 77));
+        this.addSlot(new CraftingResultSlot(player, this.craftInventory, this.craftResult, 0, 25, 77));
-        for (var i = 0; i < 3; i++)
+        for (int i = 0; i < 3; i++)
-            for (var j = 0; j < 3; j++)
+            for (int j = 0; j < 3; j++)
                 this.addSlot(new Slot(this.craftInventory, j + i * 3, 7 + j * 18, 18 + i * 18));
-        super.addDataSlots(data);
+        super.addOwnSlots(player);
     }
 
     @Override
-    public void slotsChanged(Container inventoryIn) {
+    public void onCraftMatrixChanged(IInventory inventoryIn) {
-        if (!this.player.level.isClientSide) {
+        if (!this.player.world.isRemote) {
-            var ret = ItemStack.EMPTY;
+            ItemStack ret = ItemStack.EMPTY;
-            var optional = this.player.level.getServer().getRecipeManager().getRecipeFor(RecipeType.CRAFTING, this.craftInventory, this.player.level);
+            Optional<ICraftingRecipe> optional = this.player.world.getServer().getRecipeManager().getRecipe(IRecipeType.CRAFTING, this.craftInventory, this.player.world);
             if (optional.isPresent())
-                ret = optional.get().assemble(this.craftInventory);
+                ret = optional.get().getCraftingResult(this.craftInventory);
-            this.craftResult.setItem(0, ret);
+            this.craftResult.setInventorySlotContents(0, ret);
-            ((ServerPlayer) this.player).connection.send(new ClientboundContainerSetSlotPacket(this.containerId, 0, 0, ret));
+            ((ServerPlayerEntity) this.player).connection.sendPacket(new SSetSlotPacket(this.windowId, 0, ret));
         }
     }
 
     @Override
-    public ItemStack quickMoveStack(Player player, int slotIndex) {
+    public ItemStack transferStackInSlot(PlayerEntity player, int slotIndex) {
-        return Utility.transferStackInSlot(this, this::moveItemStackTo, player, slotIndex, stack -> Pair.of(6 + 10, 12 + 10));
+        return Utility.transferStackInSlot(this, this::mergeItemStack, player, slotIndex, stack -> Pair.of(6 + 10, 12 + 10));
     }
 
     @Override
@@ -60,16 +67,16 @@ public class CraftingTerminalContainer extends ItemTerminalContainer {
     }
 
     @Override
-    public void clicked(int slotId, int dragType, ClickType clickTypeIn, Player player) {
+    public ItemStack slotClick(int slotId, int dragType, ClickType clickTypeIn, PlayerEntity player) {
         if (slotId > 0 && clickTypeIn == ClickType.PICKUP) {
-            var slot = this.slots.get(slotId);
+            Slot slot = this.inventorySlots.get(slotId);
-            if (slot.container == this.craftInventory && !slot.hasItem())
+            if (slot.inventory == this.craftInventory && !slot.getHasStack())
                 this.getTile().ghostItems.setStackInSlot(slot.getSlotIndex(), ItemStack.EMPTY);
         }
-        super.clicked(slotId, dragType, clickTypeIn, player);
+        return super.slotClick(slotId, dragType, clickTypeIn, player);
     }
 
-    public CraftingTerminalBlockEntity getTile() {
+    public CraftingTerminalTileEntity getTile() {
-        return (CraftingTerminalBlockEntity) this.tile;
+        return (CraftingTerminalTileEntity) this.tile;
     }
 }

src/main/java/de/ellpeck/prettypipes/terminal/containers/CraftingTerminalGui.java

@@ -1,42 +1,49 @@
 package de.ellpeck.prettypipes.terminal.containers;
 
-import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.blaze3d.matrix.MatrixStack;
+import com.mojang.blaze3d.platform.GlStateManager;
+import com.mojang.blaze3d.systems.RenderSystem;
 import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.packets.PacketButton;
 import de.ellpeck.prettypipes.packets.PacketHandler;
-import net.minecraft.client.gui.components.Button;
+import de.ellpeck.prettypipes.packets.PacketRequest;
-import net.minecraft.network.chat.Component;
+import de.ellpeck.prettypipes.terminal.CraftingTerminalTileEntity;
-import net.minecraft.network.chat.TranslatableComponent;
+import net.minecraft.client.gui.widget.Widget;
+import net.minecraft.client.gui.widget.button.Button;
+import net.minecraft.client.resources.I18n;
+import net.minecraft.entity.player.PlayerInventory;
+import net.minecraft.inventory.container.Slot;
+import net.minecraft.world.item.ItemStack;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.TranslationTextComponent;
 
 public class CraftingTerminalGui extends ItemTerminalGui {
-
     private static final ResourceLocation TEXTURE = new ResourceLocation(PrettyPipes.ID, "textures/gui/crafting_terminal.png");
     private Button requestButton;
 
-    public CraftingTerminalGui(ItemTerminalContainer screenContainer, Inventory inv, Component titleIn) {
+    public CraftingTerminalGui(ItemTerminalContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
         super(screenContainer, inv, titleIn);
-        this.imageWidth = 256;
+        this.xSize = 256;
     }
 
     @Override
     protected void init() {
         super.init();
-        this.requestButton = this.addRenderableWidget(new Button(this.leftPos + 8, this.topPos + 100, 50, 20, new TranslatableComponent("info." + PrettyPipes.ID + ".request"), button -> {
+        this.requestButton = this.addButton(new Button(this.guiLeft + 8, this.guiTop + 100, 50, 20, new TranslationTextComponent("info." + PrettyPipes.ID + ".request"), button -> {
-            var amount = requestModifier();
+            int amount = requestModifier();
-            PacketHandler.sendToServer(new PacketButton(this.menu.tile.getBlockPos(), PacketButton.ButtonResult.CRAFT_TERMINAL_REQUEST, amount));
+            PacketHandler.sendToServer(new PacketButton(this.container.tile.getPos(), PacketButton.ButtonResult.CRAFT_TERMINAL_REQUEST, amount));
         }));
         this.tick();
     }
 
     @Override
-    public void containerTick() {
+    public void tick() {
-        super.containerTick();
+        super.tick();
-        var tile = this.getCraftingContainer().getTile();
+        CraftingTerminalTileEntity tile = this.getCraftingContainer().getTile();
         this.requestButton.active = false;
-        for (var i = 0; i < tile.craftItems.getSlots(); i++) {
+        for (int i = 0; i < tile.craftItems.getSlots(); i++) {
-            var stack = tile.getRequestedCraftItem(i);
+            ItemStack stack = tile.getRequestedCraftItem(i);
             if (!stack.isEmpty() && stack.getCount() < stack.getMaxStackSize()) {
                 this.requestButton.active = true;
                 break;
@@ -45,23 +52,23 @@ public class CraftingTerminalGui extends ItemTerminalGui {
     }
 
     @Override
-    protected void renderLabels(PoseStack matrix, int mouseX, int mouseY) {
+    protected void drawGuiContainerForegroundLayer(MatrixStack matrix, int mouseX, int mouseY) {
-        super.renderLabels(matrix, mouseX, mouseY);
+        super.drawGuiContainerForegroundLayer(matrix, mouseX, mouseY);
 
-        var container = this.getCraftingContainer();
+        CraftingTerminalContainer container = this.getCraftingContainer();
-        var tile = container.getTile();
+        CraftingTerminalTileEntity tile = container.getTile();
-        for (var i = 0; i < tile.ghostItems.getSlots(); i++) {
+        for (int i = 0; i < tile.ghostItems.getSlots(); i++) {
             if (!tile.craftItems.getStackInSlot(i).isEmpty())
                 continue;
-            var ghost = tile.ghostItems.getStackInSlot(i);
+            ItemStack ghost = tile.ghostItems.getStackInSlot(i);
             if (ghost.isEmpty())
                 continue;
-            var finalI = i;
+            int finalI = i;
-            var slot = container.slots.stream().filter(s -> s.container == container.craftInventory && s.getSlotIndex() == finalI).findFirst().orElse(null);
+            Slot slot = container.inventorySlots.stream().filter(s -> s.inventory == container.craftInventory && s.getSlotIndex() == finalI).findFirst().orElse(null);
             if (slot == null)
                 continue;
-            this.minecraft.getItemRenderer().renderGuiItem(ghost, slot.x, slot.y);
+            this.minecraft.getItemRenderer().renderItemIntoGUI(ghost, slot.xPos, slot.yPos);
-            this.minecraft.getItemRenderer().renderGuiItemDecorations(this.font, ghost, slot.x, slot.y, "0");
+            this.minecraft.getItemRenderer().renderItemOverlayIntoGUI(this.font, ghost, slot.xPos, slot.yPos, "0");
         }
     }
 
@@ -76,6 +83,6 @@ public class CraftingTerminalGui extends ItemTerminalGui {
     }
 
     protected CraftingTerminalContainer getCraftingContainer() {
-        return (CraftingTerminalContainer) this.menu;
+        return (CraftingTerminalContainer) this.container;
     }
 }

src/main/java/de/ellpeck/prettypipes/terminal/containers/ItemTerminalContainer.java

@@ -1,41 +1,44 @@
 package de.ellpeck.prettypipes.terminal.containers;
 
 import de.ellpeck.prettypipes.Utility;
-import de.ellpeck.prettypipes.terminal.ItemTerminalBlockEntity;
+import de.ellpeck.prettypipes.terminal.ItemTerminalTileEntity;
-import net.minecraft.core.BlockPos;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.entity.player.Player;
+import net.minecraft.entity.player.ServerPlayerEntity;
-import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.inventory.container.ClickType;
-import net.minecraft.world.inventory.MenuType;
+import net.minecraft.inventory.container.Container;
-import net.minecraft.world.inventory.Slot;
+import net.minecraft.inventory.container.ContainerType;
+import net.minecraft.inventory.container.Slot;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.server.ServerWorld;
 import net.minecraftforge.items.SlotItemHandler;
 import org.apache.commons.lang3.tuple.Pair;
 
 import javax.annotation.Nullable;
 
-public class ItemTerminalContainer extends AbstractContainerMenu {
+public class ItemTerminalContainer extends Container {
 
-    public final ItemTerminalBlockEntity tile;
+    public final ItemTerminalTileEntity tile;
 
-    public ItemTerminalContainer(@Nullable MenuType<?> type, int id, Player player, BlockPos pos) {
+    public ItemTerminalContainer(@Nullable ContainerType<?> type, int id, PlayerEntity player, BlockPos pos) {
         super(type, id);
-        this.tile = Utility.getBlockEntity(ItemTerminalBlockEntity.class, player.level, pos);
+        this.tile = Utility.getBlockEntity(ItemTerminalTileEntity.class, player.world, pos);
 
         this.addOwnSlots(player);
 
-        var off = this.getSlotXOffset();
+        int off = this.getSlotXOffset();
-        for (var l = 0; l < 3; ++l)
+        for (int l = 0; l < 3; ++l)
-            for (var j1 = 0; j1 < 9; ++j1)
+            for (int j1 = 0; j1 < 9; ++j1)
-                this.addSlot(new Slot(player.getInventory(), j1 + l * 9 + 9, 8 + off + j1 * 18, 154 + l * 18));
+                this.addSlot(new Slot(player.inventory, j1 + l * 9 + 9, 8 + off + j1 * 18, 154 + l * 18));
-        for (var i1 = 0; i1 < 9; ++i1)
+        for (int i1 = 0; i1 < 9; ++i1)
-            this.addSlot(new Slot(player.getInventory(), i1, 8 + off + i1 * 18, 212));
+            this.addSlot(new Slot(player.inventory, i1, 8 + off + i1 * 18, 212));
     }
 
-    protected void addOwnSlots(Player player) {
+    protected void addOwnSlots(PlayerEntity player) {
-        var off = this.getSlotXOffset();
+        int off = this.getSlotXOffset();
-        for (var i = 0; i < 6; i++)
+        for (int i = 0; i < 6; i++)
             this.addSlot(new SlotItemHandler(this.tile.items, i, 8 + off + i % 3 * 18, 102 + i / 3 * 18));
-        for (var i = 0; i < 6; i++)
+        for (int i = 0; i < 6; i++)
             this.addSlot(new SlotItemHandler(this.tile.items, i + 6, 116 + off + i % 3 * 18, 102 + i / 3 * 18));
     }
 
@@ -44,12 +47,12 @@ public class ItemTerminalContainer extends AbstractContainerMenu {
     }
 
     @Override
-    public ItemStack quickMoveStack(Player player, int slotIndex) {
+    public ItemStack transferStackInSlot(PlayerEntity player, int slotIndex) {
-        return Utility.transferStackInSlot(this, this::moveItemStackTo, player, slotIndex, stack -> Pair.of(6, 12));
+        return Utility.transferStackInSlot(this, this::mergeItemStack, player, slotIndex, stack -> Pair.of(6, 12));
     }
 
     @Override
-    public boolean stillValid(Player player) {
+    public boolean canInteractWith(PlayerEntity playerIn) {
         return true;
     }
 }

src/main/java/de/ellpeck/prettypipes/terminal/containers/ItemTerminalGui.java

@@ -1,7 +1,6 @@
 package de.ellpeck.prettypipes.terminal.containers;
 
-import com.mojang.blaze3d.platform.InputConstants;
+import com.mojang.blaze3d.matrix.MatrixStack;
-import com.mojang.blaze3d.vertex.PoseStack;
 import de.ellpeck.prettypipes.PrettyPipes;
 import de.ellpeck.prettypipes.misc.ItemTerminalWidget;
 import de.ellpeck.prettypipes.misc.PlayerPrefs;
@@ -9,29 +8,31 @@ import de.ellpeck.prettypipes.packets.PacketButton;
 import de.ellpeck.prettypipes.packets.PacketHandler;
 import de.ellpeck.prettypipes.packets.PacketRequest;
 import joptsimple.internal.Strings;
-import net.minecraft.client.gui.components.Button;
+import net.minecraft.client.gui.screen.inventory.ContainerScreen;
-import net.minecraft.client.gui.components.EditBox;
+import net.minecraft.client.gui.widget.TextFieldWidget;
-import net.minecraft.client.gui.screens.inventory.AbstractContainerScreen;
+import net.minecraft.client.gui.widget.Widget;
-import net.minecraft.client.resources.language.I18n;
+import net.minecraft.client.gui.widget.button.Button;
-import net.minecraft.network.chat.Component;
+import net.minecraft.client.resources.I18n;
-import net.minecraft.network.chat.TextComponent;
+import net.minecraft.client.util.InputMappings;
-import net.minecraft.network.chat.TranslatableComponent;
+import net.minecraft.entity.player.PlayerInventory;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.util.Mth;
-import net.minecraft.world.entity.player.Inventory;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.StringTextComponent;
+import net.minecraft.util.text.TranslationTextComponent;
 import org.apache.commons.lang3.tuple.Pair;
 
 import java.util.*;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContainer> {
+public class ItemTerminalGui extends ContainerScreen<ItemTerminalContainer> {
 
     private static final ResourceLocation TEXTURE = new ResourceLocation(PrettyPipes.ID, "textures/gui/item_terminal.png");
 
     public List<ItemStack> currentlyCrafting;
-    public EditBox search;
+    public TextFieldWidget search;
 
     // craftables have the second parameter set to true
     private final List<Pair<ItemStack, Boolean>> sortedItems = new ArrayList<>();
@@ -49,24 +50,24 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     private ItemStack hoveredCrafting;
     private boolean isScrolling;
 
-    public ItemTerminalGui(ItemTerminalContainer screenContainer, Inventory inv, Component titleIn) {
+    public ItemTerminalGui(ItemTerminalContainer screenContainer, PlayerInventory inv, ITextComponent titleIn) {
         super(screenContainer, inv, titleIn);
-        this.imageWidth = 176 + 15;
+        this.xSize = 176 + 15;
-        this.imageHeight = 236;
+        this.ySize = 236;
     }
 
     @Override
     protected void init() {
         super.init();
 
-        this.search = this.addRenderableWidget(new EditBox(this.font, this.leftPos + this.getXOffset() + 97, this.topPos + 6, 86, 8, new TextComponent("")));
+        this.search = this.addButton(new TextFieldWidget(this.font, this.guiLeft + this.getXOffset() + 97, this.guiTop + 6, 86, 8, new StringTextComponent("")));
-        this.search.setBordered(false);
+        this.search.setEnableBackgroundDrawing(false);
         this.lastSearchText = "";
         if (this.items != null)
             this.updateWidgets();
 
-        this.plusButton = this.addRenderableWidget(new Button(this.leftPos + this.getXOffset() + 95 - 7 + 12, this.topPos + 103, 12, 12, new TextComponent("+"), button -> {
+        this.plusButton = this.addButton(new Button(this.guiLeft + this.getXOffset() + 95 - 7 + 12, this.guiTop + 103, 12, 12, new StringTextComponent("+"), button -> {
-            var modifier = requestModifier();
+            int modifier = requestModifier();
             if (modifier > 1 && this.requestAmount == 1) {
                 this.requestAmount = modifier;
             } else {
@@ -76,44 +77,44 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
             if (this.requestAmount > 384)
                 this.requestAmount = 384;
         }));
-        this.minusButton = this.addRenderableWidget(new Button(this.leftPos + this.getXOffset() + 95 - 7 - 24, this.topPos + 103, 12, 12, new TextComponent("-"), button -> {
+        this.minusButton = this.addButton(new Button(this.guiLeft + this.getXOffset() + 95 - 7 - 24, this.guiTop + 103, 12, 12, new StringTextComponent("-"), button -> {
             this.requestAmount -= requestModifier();
             if (this.requestAmount < 1)
                 this.requestAmount = 1;
         }));
         this.minusButton.active = false;
-        this.requestButton = this.addRenderableWidget(new Button(this.leftPos + this.getXOffset() + 95 - 7 - 25, this.topPos + 115, 50, 20, new TranslatableComponent("info." + PrettyPipes.ID + ".request"), button -> {
+        this.requestButton = this.addButton(new Button(this.guiLeft + this.getXOffset() + 95 - 7 - 25, this.guiTop + 115, 50, 20, new TranslationTextComponent("info." + PrettyPipes.ID + ".request"), button -> {
-            var widget = this.streamWidgets().filter(w -> w.selected).findFirst();
+            Optional<ItemTerminalWidget> widget = this.streamWidgets().filter(w -> w.selected).findFirst();
             if (!widget.isPresent())
                 return;
-            var stack = widget.get().stack.copy();
+            ItemStack stack = widget.get().stack.copy();
             stack.setCount(1);
-            PacketHandler.sendToServer(new PacketRequest(this.menu.tile.getBlockPos(), stack, this.requestAmount));
+            PacketHandler.sendToServer(new PacketRequest(this.container.tile.getPos(), stack, this.requestAmount));
             this.requestAmount = 1;
         }));
         this.requestButton.active = false;
-        this.orderButton = this.addRenderableWidget(new Button(this.leftPos - 22, this.topPos, 20, 20, new TextComponent(""), button -> {
+        this.orderButton = this.addButton(new Button(this.guiLeft - 22, this.guiTop, 20, 20, new StringTextComponent(""), button -> {
             if (this.sortedItems == null)
                 return;
-            var prefs = PlayerPrefs.get();
+            PlayerPrefs prefs = PlayerPrefs.get();
             prefs.terminalItemOrder = prefs.terminalItemOrder.next();
             prefs.save();
             this.updateWidgets();
         }));
-        this.ascendingButton = this.addRenderableWidget(new Button(this.leftPos - 22, this.topPos + 22, 20, 20, new TextComponent(""), button -> {
+        this.ascendingButton = this.addButton(new Button(this.guiLeft - 22, this.guiTop + 22, 20, 20, new StringTextComponent(""), button -> {
             if (this.sortedItems == null)
                 return;
-            var prefs = PlayerPrefs.get();
+            PlayerPrefs prefs = PlayerPrefs.get();
             prefs.terminalAscending = !prefs.terminalAscending;
             prefs.save();
             this.updateWidgets();
         }));
-        this.cancelCraftingButton = this.addRenderableWidget(new Button(this.leftPos + this.imageWidth + 4, this.topPos + 4 + 64, 54, 20, new TranslatableComponent("info." + PrettyPipes.ID + ".cancel_all"), b -> {
+        this.cancelCraftingButton = this.addButton(new Button(this.guiLeft + this.xSize + 4, this.guiTop + 4 + 64, 54, 20, new TranslationTextComponent("info." + PrettyPipes.ID + ".cancel_all"), b -> {
         }));
         this.cancelCraftingButton.visible = false;
-        for (var y = 0; y < 4; y++) {
+        for (int y = 0; y < 4; y++) {
-            for (var x = 0; x < 9; x++)
+            for (int x = 0; x < 9; x++)
-                this.addRenderableWidget(new ItemTerminalWidget(this.leftPos + this.getXOffset() + 8 + x * 18, this.topPos + 18 + y * 18, x, y, this));
+                this.addButton(new ItemTerminalWidget(this.guiLeft + this.getXOffset() + 8 + x * 18, this.guiTop + 18 + y * 18, x, y, this));
         }
     }
 
@@ -122,15 +123,15 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     }
 
     @Override
-    public void containerTick() {
+    public void tick() {
-        super.containerTick();
+        super.tick();
         this.requestButton.active = this.streamWidgets().anyMatch(w -> w.selected);
         this.plusButton.active = this.requestAmount < 384;
         this.minusButton.active = this.requestAmount > 1;
 
         this.search.tick();
         if (this.items != null) {
-            var text = this.search.getValue();
+            String text = this.search.getText();
             if (!this.lastSearchText.equals(text)) {
                 this.lastSearchText = text;
                 this.updateWidgets();
@@ -140,7 +141,7 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
 
     @Override
     public boolean mouseClicked(double mouseX, double mouseY, int button) {
-        if (button == 0 && mouseX >= this.leftPos + this.getXOffset() + 172 && this.topPos + mouseY >= 18 && mouseX < this.leftPos + this.getXOffset() + 172 + 12 && mouseY < this.topPos + 18 + 70) {
+        if (button == 0 && mouseX >= this.guiLeft + this.getXOffset() + 172 && this.guiTop + mouseY >= 18 && mouseX < this.guiLeft + this.getXOffset() + 172 + 12 && mouseY < this.guiTop + 18 + 70) {
             this.isScrolling = true;
             return true;
         }
@@ -151,9 +152,9 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     public boolean mouseReleased(double mouseX, double mouseY, int button) {
         // we have to do the click logic here because JEI is activated when letting go of the mouse button
         // and vanilla buttons are activated when the click starts, so we'll always invoke jei accidentally by default
-        if (button == 0 && this.cancelCraftingButton.visible && this.cancelCraftingButton.isHoveredOrFocused()) {
+        if (button == 0 && this.cancelCraftingButton.visible && this.cancelCraftingButton.isHovered()) {
             if (this.currentlyCrafting != null && !this.currentlyCrafting.isEmpty()) {
-                PacketHandler.sendToServer(new PacketButton(this.menu.tile.getBlockPos(), PacketButton.ButtonResult.CANCEL_CRAFTING));
+                PacketHandler.sendToServer(new PacketButton(this.container.tile.getPos(), PacketButton.ButtonResult.CANCEL_CRAFTING));
 
                 return true;
             }
@@ -162,7 +163,7 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
             this.isScrolling = false;
         else if (button == 1 && mouseX >= this.search.x && mouseX <= this.search.x + this.search.getWidth() && mouseY >= this.search.y && mouseY <= this.search.y + 8) {
             //clear text from search field when letting go of right mouse button within search field
-            this.search.setValue("");
+            this.search.setText("");
             return true;
         }
         return super.mouseReleased(mouseX, mouseY, button);
@@ -171,8 +172,8 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     @Override
     public boolean mouseDragged(double mouseX, double mouseY, int i, double j, double k) {
         if (this.isScrolling) {
-            var percentage = Mth.clamp(((float) mouseY - (this.topPos + 18) - 7.5F) / (70 - 15), 0, 1);
+            float percentage = MathHelper.clamp(((float) mouseY - (this.guiTop + 18) - 7.5F) / (70 - 15), 0, 1);
-            var offset = (int) (percentage * (float) (this.sortedItems.size() / 9 - 3));
+            int offset = (int) (percentage * (float) (this.sortedItems.size() / 9 - 3));
             if (offset != this.scrollOffset) {
                 this.scrollOffset = offset;
                 this.updateWidgets();
@@ -186,8 +187,8 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     public boolean keyPressed(int x, int y, int z) {
         // for some reason we have to do this to make the text field allow the inventory key to be typed
         if (this.search.isFocused()) {
-            var mouseKey = InputConstants.getKey(x, y);
+            InputMappings.Input mouseKey = InputMappings.getInputByCode(x, y);
-            if (this.minecraft.options.keyInventory.isActiveAndMatches(mouseKey))
+            if (this.minecraft.gameSettings.keyBindInventory.isActiveAndMatches(mouseKey))
                 return false;
         }
         return super.keyPressed(x, y, z);
@@ -201,30 +202,30 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     }
 
     public void updateWidgets() {
-        var prefs = PlayerPrefs.get();
+        PlayerPrefs prefs = PlayerPrefs.get();
-        this.ascendingButton.setMessage(new TextComponent(prefs.terminalAscending ? "^" : "v"));
+        this.ascendingButton.setMessage(new StringTextComponent(prefs.terminalAscending ? "^" : "v"));
-        this.orderButton.setMessage(new TextComponent(prefs.terminalItemOrder.name().substring(0, 1)));
+        this.orderButton.setMessage(new StringTextComponent(prefs.terminalItemOrder.name().substring(0, 1)));
         this.cancelCraftingButton.visible = this.currentlyCrafting != null && !this.currentlyCrafting.isEmpty();
 
-        var comparator = prefs.terminalItemOrder.comparator;
+        Comparator<ItemStack> comparator = prefs.terminalItemOrder.comparator;
         if (!prefs.terminalAscending)
             comparator = comparator.reversed();
 
         // add all items to the sorted items list
         this.sortedItems.clear();
-        for (var stack : this.items)
+        for (ItemStack stack : this.items)
             this.sortedItems.add(Pair.of(stack, false));
-        for (var stack : this.craftables)
+        for (ItemStack stack : this.craftables)
             this.sortedItems.add(Pair.of(stack, true));
 
         // compare by craftability first, and then by the player's chosen order
         Comparator<Pair<ItemStack, Boolean>> fullComparator = Comparator.comparing(Pair::getRight);
         this.sortedItems.sort(fullComparator.thenComparing(Pair::getLeft, comparator));
 
-        var searchText = this.search.getValue();
+        String searchText = this.search.getText();
         if (!Strings.isNullOrEmpty(searchText)) {
             this.sortedItems.removeIf(s -> {
-                var search = searchText;
+                String search = searchText;
                 String toCompare;
                 if (search.startsWith("@")) {
                     toCompare = s.getLeft().getItem().getCreatorModId(s.getLeft());
@@ -240,16 +241,16 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
         if (this.sortedItems.size() < 9 * 4)
             this.scrollOffset = 0;
 
-        var widgets = this.streamWidgets().collect(Collectors.toList());
+        List<ItemTerminalWidget> widgets = this.streamWidgets().collect(Collectors.toList());
-        for (var i = 0; i < widgets.size(); i++) {
+        for (int i = 0; i < widgets.size(); i++) {
-            var widget = widgets.get(i);
+            ItemTerminalWidget widget = widgets.get(i);
-            var index = i + this.scrollOffset * 9;
+            int index = i + this.scrollOffset * 9;
             if (index >= this.sortedItems.size()) {
                 widget.stack = ItemStack.EMPTY;
                 widget.craftable = false;
                 widget.visible = false;
             } else {
-                var stack = this.sortedItems.get(index);
+                Pair<ItemStack, Boolean> stack = this.sortedItems.get(index);
                 widget.stack = stack.getLeft();
                 widget.craftable = stack.getRight();
                 widget.visible = true;
@@ -258,69 +259,69 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     }
 
     @Override
-    public void render(PoseStack matrix, int mouseX, int mouseY, float partialTicks) {
+    public void render(MatrixStack matrix, int mouseX, int mouseY, float partialTicks) {
         this.renderBackground(matrix);
         super.render(matrix, mouseX, mouseY, partialTicks);
-        for (var widget : this.renderables) {
+        for (Widget widget : this.buttons) {
-            if (widget instanceof ItemTerminalWidget terminal)
+            if (widget instanceof ItemTerminalWidget)
-                terminal.renderToolTip(matrix, mouseX, mouseY);
+                widget.renderToolTip(matrix, mouseX, mouseY);
         }
         if (this.sortedItems != null) {
-            var prefs = PlayerPrefs.get();
+            PlayerPrefs prefs = PlayerPrefs.get();
-            if (this.orderButton.isHoveredOrFocused())
+            if (this.orderButton.isHovered())
-                this.renderTooltip(matrix, new TranslatableComponent("info." + PrettyPipes.ID + ".order", I18n.get("info." + PrettyPipes.ID + ".order." + prefs.terminalItemOrder.name().toLowerCase(Locale.ROOT))), mouseX, mouseY);
+                this.renderTooltip(matrix, new TranslationTextComponent("info." + PrettyPipes.ID + ".order", I18n.format("info." + PrettyPipes.ID + ".order." + prefs.terminalItemOrder.name().toLowerCase(Locale.ROOT))), mouseX, mouseY);
-            if (this.ascendingButton.isHoveredOrFocused())
+            if (this.ascendingButton.isHovered())
-                this.renderTooltip(matrix, new TranslatableComponent("info." + PrettyPipes.ID + "." + (prefs.terminalAscending ? "ascending" : "descending")), mouseX, mouseY);
+                this.renderTooltip(matrix, new TranslationTextComponent("info." + PrettyPipes.ID + "." + (prefs.terminalAscending ? "ascending" : "descending")), mouseX, mouseY);
         }
-        if (this.cancelCraftingButton.visible && this.cancelCraftingButton.isHoveredOrFocused()) {
+        if (this.cancelCraftingButton.visible && this.cancelCraftingButton.isHovered()) {
-            var tooltip = I18n.get("info." + PrettyPipes.ID + ".cancel_all.desc").split("\n");
+            String[] tooltip = I18n.format("info." + PrettyPipes.ID + ".cancel_all.desc").split("\n");
-            this.renderComponentTooltip(matrix, Arrays.stream(tooltip).map(TextComponent::new).collect(Collectors.toList()), mouseX, mouseY);
+            this.func_243308_b(matrix, Arrays.stream(tooltip).map(StringTextComponent::new).collect(Collectors.toList()), mouseX, mouseY);
         }
         if (!this.hoveredCrafting.isEmpty())
             this.renderTooltip(matrix, this.hoveredCrafting, mouseX, mouseY);
-        this.renderTooltip(matrix, mouseX, mouseY);
+        this.func_230459_a_(matrix, mouseX, mouseY);
     }
 
     @Override
-    protected void renderLabels(PoseStack matrix, int mouseX, int mouseY) {
+    protected void drawGuiContainerForegroundLayer(MatrixStack matrix, int mouseX, int mouseY) {
-        this.font.draw(matrix, this.playerInventoryTitle.getString(), 8 + this.getXOffset(), this.imageHeight - 96 + 2, 4210752);
+        this.font.drawString(matrix, this.playerInventory.getDisplayName().getString(), 8 + this.getXOffset(), this.ySize - 96 + 2, 4210752);
-        this.font.draw(matrix, this.title.getString(), 8, 6, 4210752);
+        this.font.drawString(matrix, this.title.getString(), 8, 6, 4210752);
 
-        var amount = String.valueOf(this.requestAmount);
+        String amount = String.valueOf(this.requestAmount);
-        this.font.draw(matrix, amount, (176 + 15 - this.font.width(amount)) / 2F - 7 + this.getXOffset(), 106, 4210752);
+        this.font.drawString(matrix, amount, (176 + 15 - this.font.getStringWidth(amount)) / 2F - 7 + this.getXOffset(), 106, 4210752);
 
         if (this.currentlyCrafting != null && !this.currentlyCrafting.isEmpty()) {
-            this.font.draw(matrix, I18n.get("info." + PrettyPipes.ID + ".crafting"), this.imageWidth + 4, 4 + 6, 4210752);
+            this.font.drawString(matrix, I18n.format("info." + PrettyPipes.ID + ".crafting"), this.xSize + 4, 4 + 6, 4210752);
             if (this.currentlyCrafting.size() > 6)
-                this.font.draw(matrix, ". . .", this.imageWidth + 24, 4 + 51, 4210752);
+                this.font.drawString(matrix, ". . .", this.xSize + 24, 4 + 51, 4210752);
         }
     }
 
     @Override
-    protected void renderBg(PoseStack matrix, float partialTicks, int mouseX, int mouseY) {
+    protected void drawGuiContainerBackgroundLayer(MatrixStack matrix, float partialTicks, int mouseX, int mouseY) {
-        this.getMinecraft().getTextureManager().bindForSetup(this.getTexture());
+        this.getMinecraft().getTextureManager().bindTexture(this.getTexture());
-        this.blit(matrix, this.leftPos, this.topPos, 0, 0, this.imageWidth, this.imageHeight);
+        this.blit(matrix, this.guiLeft, this.guiTop, 0, 0, this.xSize, this.ySize);
 
         if (this.sortedItems != null && this.sortedItems.size() >= 9 * 4) {
-            var percentage = this.scrollOffset / (float) (this.sortedItems.size() / 9 - 3);
+            float percentage = this.scrollOffset / (float) (this.sortedItems.size() / 9 - 3);
-            this.blit(matrix, this.leftPos + this.getXOffset() + 172, this.topPos + 18 + (int) (percentage * (70 - 15)), 232, 241, 12, 15);
+            this.blit(matrix, this.guiLeft + this.getXOffset() + 172, this.guiTop + 18 + (int) (percentage * (70 - 15)), 232, 241, 12, 15);
         } else {
-            this.blit(matrix, this.leftPos + this.getXOffset() + 172, this.topPos + 18, 244, 241, 12, 15);
+            this.blit(matrix, this.guiLeft + this.getXOffset() + 172, this.guiTop + 18, 244, 241, 12, 15);
         }
 
         // draw the items that are currently crafting
         this.hoveredCrafting = ItemStack.EMPTY;
         if (this.currentlyCrafting != null && !this.currentlyCrafting.isEmpty()) {
-            this.getMinecraft().getTextureManager().bindForSetup(TEXTURE);
+            this.getMinecraft().getTextureManager().bindTexture(TEXTURE);
-            this.blit(matrix, this.leftPos + this.imageWidth, this.topPos + 4, 191, 0, 65, 89);
+            this.blit(matrix, this.guiLeft + this.xSize, this.guiTop + 4, 191, 0, 65, 89);
 
-            var x = 0;
+            int x = 0;
-            var y = 0;
+            int y = 0;
-            for (var stack : this.currentlyCrafting) {
+            for (ItemStack stack : this.currentlyCrafting) {
-                var itemX = this.leftPos + this.imageWidth + 4 + x * 18;
+                int itemX = this.guiLeft + this.xSize + 4 + x * 18;
-                var itemY = this.topPos + 4 + 16 + y * 18;
+                int itemY = this.guiTop + 4 + 16 + y * 18;
-                this.itemRenderer.renderGuiItem(stack, itemX, itemY);
+                this.itemRenderer.renderItemAndEffectIntoGUI(stack, itemX, itemY);
-                this.itemRenderer.renderGuiItemDecorations(this.font, stack, itemX, itemY, String.valueOf(stack.getCount()));
+                this.itemRenderer.renderItemOverlayIntoGUI(this.font, stack, itemX, itemY, String.valueOf(stack.getCount()));
                 if (mouseX >= itemX && mouseY >= itemY && mouseX < itemX + 16 && mouseY < itemY + 18)
                     this.hoveredCrafting = stack;
                 x++;
@@ -341,7 +342,7 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     @Override
     public boolean mouseScrolled(double x, double y, double scroll) {
         if (this.sortedItems != null && this.sortedItems.size() >= 9 * 4) {
-            var offset = Mth.clamp(this.scrollOffset - (int) Math.signum(scroll), 0, this.sortedItems.size() / 9 - 3);
+            int offset = MathHelper.clamp(this.scrollOffset - (int) Math.signum(scroll), 0, this.sortedItems.size() / 9 - 3);
             if (offset != this.scrollOffset) {
                 this.scrollOffset = offset;
                 this.updateWidgets();
@@ -351,7 +352,7 @@ public class ItemTerminalGui extends AbstractContainerScreen<ItemTerminalContain
     }
 
     public Stream<ItemTerminalWidget> streamWidgets() {
-        return this.renderables.stream()
+        return this.buttons.stream()
                 .filter(w -> w instanceof ItemTerminalWidget)
                 .map(w -> (ItemTerminalWidget) w);
     }

src/main/java/de/ellpeck/prettypipes/terminal/containers/WrappedCraftingInventory.java

@@ -1,30 +1,32 @@
 package de.ellpeck.prettypipes.terminal.containers;
 
-import net.minecraft.world.entity.player.StackedContents;
+import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.inventory.CraftingInventory;
-import net.minecraft.world.inventory.CraftingContainer;
+import net.minecraft.inventory.ItemStackHelper;
+import net.minecraft.inventory.container.Container;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.item.crafting.RecipeItemHelper;
 import net.minecraftforge.items.ItemStackHandler;
 
-public class WrappedCraftingInventory extends CraftingContainer {
+public class WrappedCraftingInventory extends CraftingInventory {
 
     private final ItemStackHandler items;
-    private final AbstractContainerMenu eventHandler;
+    private final Container eventHandler;
 
-    public WrappedCraftingInventory(ItemStackHandler items, AbstractContainerMenu eventHandlerIn, int width, int height) {
+    public WrappedCraftingInventory(ItemStackHandler items, Container eventHandlerIn, int width, int height) {
         super(eventHandlerIn, width, height);
         this.eventHandler = eventHandlerIn;
         this.items = items;
     }
 
     @Override
-    public int getContainerSize() {
+    public int getSizeInventory() {
         return this.items.getSlots();
     }
 
     @Override
     public boolean isEmpty() {
-        for (var i = 0; i < this.items.getSlots(); i++) {
+        for (int i = 0; i < this.items.getSlots(); i++) {
             if (!this.items.getStackInSlot(i).isEmpty())
                 return false;
         }
@@ -32,41 +34,41 @@ public class WrappedCraftingInventory extends CraftingContainer {
     }
 
     @Override
-    public ItemStack getItem(int index) {
+    public ItemStack getStackInSlot(int index) {
         return this.items.getStackInSlot(index);
     }
 
     @Override
-    public ItemStack removeItemNoUpdate(int index) {
+    public ItemStack removeStackFromSlot(int index) {
-        var before = this.items.getStackInSlot(index);
+        ItemStack before = this.items.getStackInSlot(index);
         this.items.setStackInSlot(index, ItemStack.EMPTY);
         return before;
     }
 
     @Override
-    public ItemStack removeItem(int index, int count) {
+    public ItemStack decrStackSize(int index, int count) {
-        var slotStack = this.items.getStackInSlot(index);
+        ItemStack slotStack = this.items.getStackInSlot(index);
-        var ret = !slotStack.isEmpty() && count > 0 ? slotStack.split(count) : ItemStack.EMPTY;
+        ItemStack ret = !slotStack.isEmpty() && count > 0 ? slotStack.split(count) : ItemStack.EMPTY;
         if (!ret.isEmpty())
-            this.eventHandler.slotsChanged(this);
+            this.eventHandler.onCraftMatrixChanged(this);
         return ret;
     }
 
     @Override
-    public void setItem(int index, ItemStack stack) {
+    public void setInventorySlotContents(int index, ItemStack stack) {
         this.items.setStackInSlot(index, stack);
-        this.eventHandler.slotsChanged(this);
+        this.eventHandler.onCraftMatrixChanged(this);
     }
 
     @Override
-    public void clearContent() {
+    public void clear() {
-        for (var i = 0; i < this.items.getSlots(); i++)
+        for (int i = 0; i < this.items.getSlots(); i++)
             this.items.setStackInSlot(i, ItemStack.EMPTY);
     }
 
     @Override
-    public void fillStackedContents(StackedContents helper) {
+    public void fillStackedContents(RecipeItemHelper helper) {
-        for (var i = 0; i < this.items.getSlots(); i++)
+        for (int i = 0; i < this.items.getSlots(); i++)
-            helper.accountStack(this.items.getStackInSlot(i));
+            helper.accountPlainStack(this.items.getStackInSlot(i));
     }
 }