Rename the fairy into a twittermite

src/main/java/com/minelittlepony/unicopia/client/URenderers.java

@@ -71,7 +71,7 @@ public interface URenderers {
         EntityRendererRegistry.register(UEntities.BUTTERFLY, ButterflyEntityRenderer::new);
         EntityRendererRegistry.register(UEntities.FLOATING_ARTEFACT, FloatingArtefactEntityRenderer::new);
         EntityRendererRegistry.register(UEntities.CAST_SPELL, CastSpellEntityRenderer::new);
-        EntityRendererRegistry.register(UEntities.FAIRY, FairyEntityRenderer::new);
+        EntityRendererRegistry.register(UEntities.TWITTERMITE, FairyEntityRenderer::new);
         EntityRendererRegistry.register(UEntities.SPELLBOOK, SpellbookEntityRenderer::new);
 
         ColorProviderRegistry.ITEM.register((stack, i) -> i > 0 ? -1 : ((DyeableItem)stack.getItem()).getColor(stack), UItems.FRIENDSHIP_BRACELET);

src/main/java/com/minelittlepony/unicopia/entity/EntityReference.java

@@ -10,6 +10,7 @@ import com.minelittlepony.unicopia.util.NbtSerialisable;
 
 import net.minecraft.entity.Entity;
 import net.minecraft.nbt.NbtCompound;
+import net.minecraft.nbt.NbtElement;
 import net.minecraft.server.world.ServerWorld;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
@@ -29,33 +30,42 @@ public class EntityReference<T extends Entity> implements NbtSerialisable {
         }
     }
 
+    /**
+     * Gets the position the last known position of the assigned entity.
+     */
     public Optional<Vec3d> getPosition() {
         return pos;
     }
 
     public boolean isPresent(World world) {
-        T entity = get(world);
-        return entity != null && !entity.isRemoved();
+        return getOrEmpty(world).isPresent();
     }
 
     public void ifPresent(World world, Consumer<T> consumer) {
-        if (isPresent(world)) {
-            consumer.accept(get(world));
+        getOrEmpty(world).ifPresent(consumer);
     }
+
+    @Nullable
+    public T get(World world) {
+        return getOrEmpty(world).orElse(null);
     }
 
     @SuppressWarnings("unchecked")
-    @Nullable
-    public T get(World world) {
+    public Optional<T> getOrEmpty(World world) {
         if (uuid != null && world instanceof ServerWorld) {
-            return (T)((ServerWorld)world).getEntity(uuid);
+            return Optional.ofNullable((T)((ServerWorld)world).getEntity(uuid)).filter(this::checkReference);
         }
 
         if (clientId != 0) {
-            return (T)world.getEntityById(clientId);
+            return Optional.ofNullable((T)world.getEntityById(clientId)).filter(this::checkReference);
         }
 
-        return null;
+        return Optional.empty();
+    }
+
+    private boolean checkReference(Entity e) {
+        pos = Optional.of(e.getPos());
+        return !e.isRemoved();
     }
 
     @Override
@@ -72,7 +82,7 @@ public class EntityReference<T extends Entity> implements NbtSerialisable {
     @Override
     public void fromNBT(NbtCompound tag) {
         uuid = tag.containsUuid("uuid") ? tag.getUuid("uuid") : null;
-        pos = tag.contains("pos") ? Optional.ofNullable(NbtSerialisable.readVector(tag.getList("pos", 6))) : Optional.empty();
+        pos = tag.contains("pos") ? Optional.ofNullable(NbtSerialisable.readVector(tag.getList("pos", NbtElement.DOUBLE_TYPE))) : Optional.empty();
         clientId = tag.getInt("clientId");
     }
 }

src/main/java/com/minelittlepony/unicopia/entity/UEntities.java

@@ -31,7 +31,7 @@ public interface UEntities {
     EntityType<CastSpellEntity> CAST_SPELL = register("cast_spell", FabricEntityTypeBuilder.create(SpawnGroup.MISC, CastSpellEntity::new)
             .trackRangeBlocks(200)
             .dimensions(EntityDimensions.fixed(1, 0.4F)));
-    EntityType<FairyEntity> FAIRY = register("fairy", FabricEntityTypeBuilder.create(SpawnGroup.MISC, FairyEntity::new)
+    EntityType<FairyEntity> TWITTERMITE = register("twittermite", FabricEntityTypeBuilder.create(SpawnGroup.MISC, FairyEntity::new)
             .trackRangeBlocks(200)
             .dimensions(EntityDimensions.fixed(0.1F, 0.1F)));
     EntityType<SpellbookEntity> SPELLBOOK = register("spellbook", FabricEntityTypeBuilder.create(SpawnGroup.MISC, SpellbookEntity::new)
@@ -46,7 +46,7 @@ public interface UEntities {
     static void bootstrap() {
         FabricDefaultAttributeRegistry.register(BUTTERFLY, ButterflyEntity.createButterflyAttributes());
         FabricDefaultAttributeRegistry.register(SPELLBOOK, SpellbookEntity.createMobAttributes());
-        FabricDefaultAttributeRegistry.register(FAIRY, FairyEntity.createMobAttributes());
+        FabricDefaultAttributeRegistry.register(TWITTERMITE, FairyEntity.createMobAttributes());
 
         final Predicate<BiomeSelectionContext> butterflySpawnable = BiomeSelectors.foundInOverworld()
                 .and(ctx -> ctx.getBiome().getPrecipitation() == Biome.Precipitation.RAIN);

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

@@ -79,6 +79,7 @@
   "block.unicopia.rocks": "Rocks",
 
   "entity.unicopia.butterfly": "Butterfly",
+  "entity.unicopia.twittermite": "Twittermite",
   "entity.unicopia.cast_spell": "Cast Spell",
   "entity.unicopia.cast_spell.by": "a spell cast by %s",
   "entity.unicopia.spellbook": "Spellbook",