pet reviver, part 1

src/main/java/de/ellpeck/naturesaura/items/ItemPetReviver.java

@@ -0,0 +1,123 @@
+package de.ellpeck.naturesaura.items;
+
+import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.api.NaturesAuraAPI;
+import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
+import de.ellpeck.naturesaura.packet.PacketHandler;
+import de.ellpeck.naturesaura.packet.PacketParticles;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.entity.passive.TameableEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.player.ServerPlayerEntity;
+import net.minecraft.entity.player.SpawnLocationHelper;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.ActionResultType;
+import net.minecraft.util.Hand;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.vector.Vector3d;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraft.util.text.TranslationTextComponent;
+import net.minecraft.world.server.ServerWorld;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.event.entity.living.LivingDeathEvent;
+import net.minecraftforge.event.entity.player.PlayerInteractEvent;
+import net.minecraftforge.eventbus.api.EventPriority;
+import net.minecraftforge.eventbus.api.SubscribeEvent;
+
+import java.util.Optional;
+import java.util.UUID;
+
+public class ItemPetReviver extends ItemImpl {
+    public ItemPetReviver() {
+        super("pet_reviver");
+        MinecraftForge.EVENT_BUS.register(new Events());
+    }
+
+    private static class Events {
+
+        // we need to use the event since the item doesn't receive the interaction for tamed pets..
+        @SubscribeEvent
+        public void onEntityInteract(PlayerInteractEvent.EntityInteractSpecific event) {
+            Entity target = event.getTarget();
+            if (!(target instanceof TameableEntity))
+                return;
+            if (target.getPersistentData().getBoolean(NaturesAura.MOD_ID + ":pet_reviver"))
+                return;
+            ItemStack stack = event.getPlayer().getHeldItem(event.getHand());
+            if (stack.getItem() != ModItems.PET_REVIVER)
+                return;
+            target.getPersistentData().putBoolean(NaturesAura.MOD_ID + ":pet_reviver", true);
+            stack.shrink(1);
+            event.setCancellationResult(ActionResultType.SUCCESS);
+            event.setCanceled(true);
+        }
+
+        // we want to be sure that the pet is really dying, so we want to receive the event last
+        @SubscribeEvent(priority = EventPriority.LOWEST)
+        public void onLivingDeath(LivingDeathEvent event) {
+            LivingEntity entity = event.getEntityLiving();
+            if (entity.world.isRemote || !(entity instanceof TameableEntity))
+                return;
+            TameableEntity tameable = (TameableEntity) entity;
+            if (!tameable.isTamed() || !tameable.getPersistentData().getBoolean(NaturesAura.MOD_ID + ":pet_reviver"))
+                return;
+
+            // get the overworld, and the overworld's spawn point, by default
+            ServerWorld spawnWorld = tameable.world.getServer().func_241755_D_();
+            Vector3d spawn = Vector3d.copyCenteredHorizontally(spawnWorld.func_241135_u_());
+
+            // check if the owner is online, and respawn at the bed if they are
+            LivingEntity owner = tameable.getOwner();
+            if (owner instanceof ServerPlayerEntity) {
+                ServerPlayerEntity player = (ServerPlayerEntity) owner;
+
+                // I'm not really sure what this means, but I got it from PlayerList.func_232644_a_ haha
+                BlockPos pos = player.func_241140_K_();
+                if (pos != null) {
+                    float f = player.func_242109_L();
+                    boolean b = player.func_241142_M_();
+                    Optional<Vector3d> bed = PlayerEntity.func_242374_a((ServerWorld) player.world, pos, f, b, false);
+                    if (bed.isPresent()) {
+                        spawnWorld = (ServerWorld) player.world;
+                        spawn = bed.get();
+                    }
+                }
+            }
+
+            PacketHandler.sendToAllAround(tameable.world, tameable.getPosition(), 32, new PacketParticles((float) tameable.getPosX(), (float) tameable.getPosYEye(), (float) tameable.getPosZ(), PacketParticles.Type.PET_REVIVER, 0xc2461d));
+
+            TameableEntity spawnedPet = tameable;
+            if (tameable.world != spawnWorld) {
+                ((ServerWorld) tameable.world).removeEntity(tameable, true);
+                spawnedPet = (TameableEntity) tameable.getType().create(spawnWorld);
+            }
+            // respawn (a copy of) the pet
+            spawnedPet.copyDataFromOld(tameable);
+            spawnedPet.setMotion(0, 0, 0);
+            spawnedPet.setLocationAndAngles(spawn.x, spawn.y, spawn.z, tameable.rotationYaw, tameable.rotationPitch);
+            while (!spawnWorld.hasNoCollisions(spawnedPet))
+                spawnedPet.setPosition(spawnedPet.getPosX(), spawnedPet.getPosY() + 1, spawnedPet.getPosZ());
+            spawnedPet.setHealth(spawnedPet.getMaxHealth());
+            spawnedPet.getNavigator().clearPath();
+            // sit down (on the server side!)
+            spawnedPet.func_233687_w_(true);
+            spawnedPet.setJumping(false);
+            spawnedPet.setAttackTarget(null);
+            if (tameable.world != spawnWorld) {
+                spawnWorld.addEntity(spawnedPet);
+                tameable.remove(false);
+            }
+
+            // drain aura
+            BlockPos auraPos = IAuraChunk.getHighestSpot(spawnWorld, spawnedPet.getPosition(), 35, spawnedPet.getPosition());
+            IAuraChunk.getAuraChunk(spawnWorld, auraPos).drainAura(auraPos, 200000);
+
+            PacketHandler.sendToAllAround(spawnedPet.world, spawnedPet.getPosition(), 32, new PacketParticles((float) spawnedPet.getPosX(), (float) spawnedPet.getPosYEye(), (float) spawnedPet.getPosZ(), PacketParticles.Type.PET_REVIVER, 0x4dba2f));
+
+            if (owner instanceof PlayerEntity)
+                owner.sendMessage(new TranslationTextComponent("info." + NaturesAura.MOD_ID + ".pet_reviver", spawnedPet.getDisplayName()).mergeStyle(TextFormatting.ITALIC, TextFormatting.GRAY), UUID.randomUUID());
+            event.setCanceled(true);
+        }
+    }
+}

src/main/java/de/ellpeck/naturesaura/items/ModItems.java

@@ -61,4 +61,5 @@ public final class ModItems {
     public static Item FORTRESS_FINDER;
     public static Item END_CITY_FINDER;
     public static Item BREAK_PREVENTION;
+    public static Item PET_REVIVER;
 }

src/main/java/de/ellpeck/naturesaura/packet/PacketParticles.java

@@ -566,6 +566,17 @@ public class PacketParticles {
                         message.posY + (float) world.rand.nextGaussian() * 0.5F,
                         message.posZ + (float) world.rand.nextGaussian() * 0.5F,
                         x + 0.5F, y + 0.5F, z + 0.5F, 0.2F, color, world.rand.nextFloat() + 1);
+        }),
+        PET_REVIVER((message, world) -> {
+            for (int i = world.rand.nextInt(50) + 150; i >= 0; i--)
+                NaturesAuraAPI.instance().spawnMagicParticle(
+                        message.posX + (float) world.rand.nextGaussian() * 0.4F,
+                        message.posY + (float) world.rand.nextGaussian() * 0.4F,
+                        message.posZ + (float) world.rand.nextGaussian() * 0.4F,
+                        world.rand.nextGaussian() * 0.002F,
+                        world.rand.nextFloat() * 0.001F + 0.002F,
+                        world.rand.nextGaussian() * 0.002F,
+                        message.data[0], world.rand.nextFloat() * 2 + 1, world.rand.nextInt(50) + 50, 0, false, true);
         });
 
         public final BiConsumer<PacketParticles, World> action;

src/main/java/de/ellpeck/naturesaura/reg/ModRegistry.java

@@ -222,7 +222,8 @@ public final class ModRegistry {
                 new ItemArmor("sky_shoes", ModArmorMaterial.SKY, EquipmentSlotType.FEET),
                 new ItemStructureFinder("fortress_finder", Structure.field_236378_n_, 0xba2800),
                 new ItemStructureFinder("end_city_finder", Structure.field_236379_o_, 0xca5cd6),
-                new ItemBreakPrevention()
+                new ItemBreakPrevention(),
+                new ItemPetReviver()
         );
         Helper.populateObjectHolders(ModItems.class, event.getRegistry());
     }

src/main/resources/assets/naturesaura/lang/en_us.json

@@ -131,6 +131,7 @@
     "item.naturesaura.fortress_finder": "Eye of the Blaze",
     "item.naturesaura.end_city_finder": "Eye of the Shulker",
     "item.naturesaura.break_prevention": "Eir's Token",
+    "item.naturesaura.pet_reviver": "Token of Undying Friendship",
     "container.naturesaura:tree_ritual.name": "Ritual of the Forest",
     "container.naturesaura:altar.name": "Natural Altar Infusion",
     "container.naturesaura:offering.name": "Offering to the Gods",
@@ -156,6 +157,7 @@
     "info.naturesaura.broken": " (Broken)",
     "info.naturesaura.required_aura_type.naturesaura:overworld": "Requires Natural Altar",
     "info.naturesaura.required_aura_type.naturesaura:nether": "Requires Crimson Altar",
+    "info.naturesaura.pet_reviver": "Your pet %s was in distress and has been sent home.",
     "advancement.naturesaura.root": "Nature's Aura",
     "advancement.naturesaura.root.desc": "Becoming a magical botanist",
     "advancement.naturesaura.get_book": "Pages of Discovery",