Adding my util classes

src/main/java/de/ellpeck/actuallyadditions/mod/util/CapHelper.java

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+package de.ellpeck.actuallyadditions.mod.util;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.state.BlockState;
+import net.neoforged.neoforge.capabilities.Capabilities;
+import net.neoforged.neoforge.items.IItemHandler;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.util.Optional;
+
+public class CapHelper {
+    @Nonnull
+    public static Optional<IItemHandler> getItemHandler(@Nonnull Level level, @Nonnull BlockPos pos, @Nullable Direction side) {
+        BlockState blockState = level.getBlockState(pos);
+        if (blockState.hasBlockEntity()) {
+            BlockEntity blockEntity = level.getBlockEntity(pos);
+            if (blockEntity != null) {
+                return Optional.ofNullable(level.getCapability(Capabilities.ItemHandler.BLOCK, pos, level.getBlockState(pos), blockEntity, side));
+            }
+        }
+        return Optional.empty();
+    }
+
+    @Nonnull
+    public static Optional<IItemHandler> getItemHandler(ItemStack stack) {
+        return Optional.ofNullable(stack.getCapability(Capabilities.ItemHandler.ITEM));
+    }
+}

src/main/java/de/ellpeck/actuallyadditions/mod/util/NoAdvRecipeOutput.java

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+package de.ellpeck.actuallyadditions.mod.util;
+
+import net.minecraft.advancements.Advancement;
+import net.minecraft.advancements.AdvancementHolder;
+import net.minecraft.data.recipes.RecipeOutput;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.crafting.Recipe;
+import net.neoforged.neoforge.common.conditions.ICondition;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+public class NoAdvRecipeOutput implements RecipeOutput {
+    private final RecipeOutput inner;
+    public NoAdvRecipeOutput(RecipeOutput output) {
+        inner = output;
+    }
+
+    @Nonnull
+    @Override
+    public Advancement.Builder advancement() {
+        return inner.advancement();
+    }
+
+    @Override
+    public void accept(@Nonnull ResourceLocation resourceLocation, @Nonnull Recipe<?> recipe, @Nullable AdvancementHolder advancementHolder, @Nonnull ICondition... iConditions) {
+        inner.accept(resourceLocation, recipe, null, iConditions);
+    }
+}

src/main/java/de/ellpeck/actuallyadditions/mod/util/RecipeInjector.java

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+package de.ellpeck.actuallyadditions.mod.util;
+
+import net.minecraft.advancements.Advancement;
+import net.minecraft.advancements.AdvancementHolder;
+import net.minecraft.data.recipes.RecipeOutput;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.crafting.Recipe;
+import net.neoforged.neoforge.common.conditions.ICondition;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.util.function.Function;
+@SuppressWarnings("unchecked")
+public class RecipeInjector<T extends Recipe<?>> implements RecipeOutput {
+    private final RecipeOutput inner;
+    private final Function<T, ? extends T> constructor;
+    public RecipeInjector(RecipeOutput output, Function<T, ? extends T> constructorIn) {
+        inner = output;
+        this.constructor = constructorIn;
+    }
+
+    @Nonnull
+    @Override
+    public Advancement.Builder advancement() {
+        return inner.advancement();
+    }
+
+    @Override
+    public void accept(@Nonnull ResourceLocation resourceLocation, @Nonnull Recipe<?> recipe, @Nullable AdvancementHolder advancementHolder, @Nonnull ICondition... iConditions) {
+        inner.accept(resourceLocation, constructor.apply((T) recipe), advancementHolder, iConditions);
+    }
+}

src/main/java/de/ellpeck/actuallyadditions/mod/util/RecipeUnlocker.java

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+package de.ellpeck.actuallyadditions.mod.util;
+
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.player.Player;
+import net.neoforged.bus.api.IEventBus;
+import net.neoforged.neoforge.event.entity.player.PlayerEvent;
+
+import java.util.ArrayList;
+
+public class RecipeUnlocker {
+    private static String modtag;
+    private static int version;
+    private static String MODID;
+
+    public static void register(String modid, IEventBus bus, int recipeversion) {
+        modtag = modid + "_unlocked";
+        version = recipeversion;
+        MODID = modid;
+        bus.addListener(RecipeUnlocker::onPlayerLoggedIn);
+    }
+
+    private static void onPlayerLoggedIn(PlayerEvent.PlayerLoggedInEvent event) {
+        Player player = event.getEntity();
+
+        CompoundTag tag = player.getPersistentData();
+        if (tag.contains(modtag) && tag.getInt(modtag) >= version) {
+            return;
+        }
+
+        if (player instanceof ServerPlayer) {
+            MinecraftServer server = player.getServer();
+            if (server != null) {
+                var recipes = new ArrayList<>(server.getRecipeManager().getRecipes());
+                recipes.removeIf((recipe -> !recipe.id().getNamespace().contains(MODID)));
+                player.awardRecipes(recipes);
+                tag.putInt(modtag, version);
+            }
+        }
+    }
+}