finished the token of undying friendship

src/generated/resources/assets/naturesaura/models/item/pet_reviver.json

@@ -0,0 +1,6 @@
+{
+  "parent": "minecraft:item/generated",
+  "textures": {
+    "layer0": "naturesaura:item/pet_reviver"
+  }
+}

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

@@ -12,6 +12,7 @@ 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.particles.ParticleTypes;
 import net.minecraft.util.ActionResultType;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
@@ -21,6 +22,7 @@ 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.living.LivingEvent;
 import net.minecraftforge.event.entity.player.PlayerInteractEvent;
 import net.minecraftforge.eventbus.api.EventPriority;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
@@ -36,11 +38,31 @@ public class ItemPetReviver extends ItemImpl {
 
     private static class Events {
 
+        @SubscribeEvent
+        public void onEntityTick(LivingEvent.LivingUpdateEvent event) {
+            LivingEntity entity = event.getEntityLiving();
+            if (entity.world.isRemote || entity.world.getGameTime() % 20 != 0 || !(entity instanceof TameableEntity))
+                return;
+            TameableEntity tameable = (TameableEntity) entity;
+            if (!tameable.isTamed() || !tameable.getPersistentData().getBoolean(NaturesAura.MOD_ID + ":pet_reviver"))
+                return;
+            LivingEntity owner = tameable.getOwner();
+            if (owner == null || owner.getDistanceSq(tameable) > 5 * 5)
+                return;
+            if (entity.world.rand.nextFloat() >= 0.65F) {
+                ((ServerWorld) entity.world).spawnParticle(ParticleTypes.HEART,
+                        entity.getPosX() + entity.world.rand.nextGaussian() * 0.25F,
+                        entity.getPosYEye() + entity.world.rand.nextGaussian() * 0.25F,
+                        entity.getPosZ() + entity.world.rand.nextGaussian() * 0.25F,
+                        entity.world.rand.nextInt(2) + 1, 0, 0, 0, 0);
+            }
+        }
+
         // 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))
+            if (!(target instanceof TameableEntity) || !((TameableEntity) target).isTamed())
                 return;
             if (target.getPersistentData().getBoolean(NaturesAura.MOD_ID + ":pet_reviver"))
                 return;
@@ -48,6 +70,7 @@ public class ItemPetReviver extends ItemImpl {
             if (stack.getItem() != ModItems.PET_REVIVER)
                 return;
             target.getPersistentData().putBoolean(NaturesAura.MOD_ID + ":pet_reviver", true);
+            if (!target.world.isRemote)
                 stack.shrink(1);
             event.setCancellationResult(ActionResultType.SUCCESS);
             event.setCanceled(true);
@@ -71,7 +94,6 @@ public class ItemPetReviver extends ItemImpl {
             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) {

src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/items/pet_reviver.json

@@ -0,0 +1,21 @@
+{
+    "name": "Token of Undying Friendship",
+    "icon": "naturesaura:pet_reviver",
+    "category": "items",
+    "advancement": "naturesaura:sky_ingot",
+    "pages": [
+        {
+            "type": "text",
+            "text": "Owning $(thing)pets$() is quite the emotional endeavour, since the chance of them succumbing to monsters or hot lava is alarmingly high. Magical botanists have had to deal with this problem for a long time, until they found out about the powers of the $(item)Token of Undying Friendship$(). Upon being applied to any $(thing)tamed animal$(), the animal will never be able to die anymore."
+        },
+        {
+            "type": "text",
+            "text": "Instead, when it reaches dangerously low health, it will be $(thing)sent home$() to the owner's usual revival location. During this process, a rather large amount of $(aura) is drained from the area around this home location.$(br)The animal additionally expresses its happiness over being given this special token by occasionally showing you their heart."
+        },
+        {
+            "type": "crafting",
+            "text": "Creating the $(item)Token of Undying Friendship$()",
+            "recipe": "naturesaura:pet_reviver"
+        }
+    ]
+}

src/main/resources/data/naturesaura/recipes/pet_reviver.json

@@ -0,0 +1,28 @@
+{
+    "type": "minecraft:crafting_shaped",
+    "pattern": [
+        "TGJ",
+        "SBS",
+        " G "
+    ],
+    "key": {
+        "G": {
+            "item": "minecraft:gold_ingot"
+        },
+        "B": {
+            "item": "minecraft:bone"
+        },
+        "T": {
+            "item": "naturesaura:token_grief"
+        },
+        "J": {
+            "item": "naturesaura:token_joy"
+        },
+        "S": {
+            "item": "naturesaura:sky_ingot"
+        }
+    },
+    "result": {
+        "item": "naturesaura:pet_reviver"
+    }
+}