Change Pony into a record and track whether a IPony instance was returned as a default skin or not separate from the texture id

src/main/java/com/minelittlepony/api/pony/IPony.java

@@ -7,6 +7,7 @@ import org.jetbrains.annotations.Nullable;
 import com.google.common.collect.ComparisonChain;
 import com.minelittlepony.api.pony.meta.Race;
 import com.minelittlepony.client.MineLittlePony;
+import com.minelittlepony.settings.PonyConfig;
 
 public interface IPony extends Comparable<IPony> {
 
@@ -41,7 +42,9 @@ public interface IPony extends Comparable<IPony> {
     /**
      * Gets the race associated with this pony.
      */
-    Race race();
+    default Race race() {
+        return PonyConfig.getEffectiveRace(metadata().getRace());
+    }
 
     /**
      * Gets the texture used for rendering this pony.

src/main/java/com/minelittlepony/client/hdskins/DummyPony.java

@@ -7,13 +7,13 @@ import com.minelittlepony.api.pony.IPony;
 import com.minelittlepony.api.pony.IPonyManager;
 import com.minelittlepony.client.IPreviewModel;
 import com.minelittlepony.client.MineLittlePony;
-import com.minelittlepony.client.pony.Pony;
+import com.minelittlepony.client.render.EquineRenderManager;
 import com.minelittlepony.hdskins.client.dummy.*;
 
 /**
  * Dummy model used for the skin uploading screen.
  */
-class DummyPony extends DummyPlayer implements IPreviewModel, ModelAttributes.Swimmer, IPonyManager.ForcedPony, Pony.RegistrationHandler {
+class DummyPony extends DummyPlayer implements IPreviewModel, ModelAttributes.Swimmer, IPonyManager.ForcedPony, EquineRenderManager.RegistrationHandler {
 
     public DummyPony(ClientWorld world, PlayerSkins<?> textures) {
         super(world, textures);

src/main/java/com/minelittlepony/client/mixin/MixinClientPlayerEntity.java

@@ -3,6 +3,7 @@ package com.minelittlepony.client.mixin;
 import com.minelittlepony.api.pony.IPony;
 import com.minelittlepony.client.MineLittlePony;
 import com.minelittlepony.client.pony.Pony;
+import com.minelittlepony.client.render.EquineRenderManager;
 
 import net.minecraft.client.network.AbstractClientPlayerEntity;
 import net.minecraft.client.network.ClientPlayerEntity;
@@ -18,7 +19,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(ClientPlayerEntity.class)
-abstract class MixinClientPlayerEntity extends AbstractClientPlayerEntity implements Pony.RegistrationHandler {
+abstract class MixinClientPlayerEntity extends AbstractClientPlayerEntity implements EquineRenderManager.RegistrationHandler {
     public MixinClientPlayerEntity() { super(null, null); }
 
     @Nullable

src/main/java/com/minelittlepony/client/pony/Pony.java

@@ -1,76 +1,32 @@
 package com.minelittlepony.client.pony;
 
-import com.google.common.base.MoreObjects;
 import com.minelittlepony.api.pony.IPony;
 import com.minelittlepony.api.pony.IPonyData;
-import com.minelittlepony.api.pony.meta.Race;
 import com.minelittlepony.api.pony.network.MsgPonyData;
-import com.minelittlepony.settings.PonyConfig;
 
 import net.minecraft.util.Identifier;
 
-import org.jetbrains.annotations.Unmodifiable;
-
-@Unmodifiable
-public class Pony implements IPony {
-    private final Identifier texture;
-    private final Memoize<IPonyData> metadata;
-
-    private boolean defaulted;
-
-    Pony(Identifier resource, Memoize<IPonyData> data) {
-        texture = resource;
-        metadata = data;
-    }
+public record Pony (
+        Identifier texture,
+        Memoize<IPonyData> memoizedData,
+        boolean defaulted
+    ) implements IPony {
 
     Pony(Identifier resource) {
-        this(resource, PonyData.parse(resource));
-    }
-
-    public IPony markDefaulted() {
-        defaulted = true;
-        return this;
-    }
-
-    @Override
-    public boolean defaulted() {
-        return defaulted;
+        this(resource, PonyData.parse(resource), false);
     }
 
     @Override
     public boolean hasMetadata() {
-        return metadata.isPresent();
-    }
-
-    @Override
-    public Race race() {
-        return PonyConfig.getEffectiveRace(metadata().getRace());
-    }
-
-    @Override
-    public Identifier texture() {
-        return texture;
+        return memoizedData.isPresent();
     }
 
     @Override
     public IPonyData metadata() {
-        return metadata.get(PonyData.NULL);
-    }
-
-    @Override
-    public String toString() {
-        return MoreObjects.toStringHelper(this)
-                .add("texture", texture)
-                .add("metadata", metadata)
-                .add("defaulted", defaulted)
-                .toString();
-    }
-
-    public interface RegistrationHandler {
-        boolean shouldUpdateRegistration(IPony pony);
+        return memoizedData.get(PonyData.NULL);
     }
 
     public static IPony snapshot(IPony pony) {
-        return new Pony(pony.texture(), Memoize.of(new MsgPonyData(pony.metadata(), pony.defaulted())));
+        return new Pony(pony.texture(), Memoize.of(new MsgPonyData(pony.metadata(), pony.defaulted())), pony.defaulted());
     }
 }

src/main/java/com/minelittlepony/client/pony/PonyManager.java

@@ -1,8 +1,6 @@
 package com.minelittlepony.client.pony;
 
-import com.google.common.cache.CacheBuilder;
-import com.google.common.cache.CacheLoader;
-import com.google.common.cache.LoadingCache;
+import com.google.common.cache.*;
 import com.minelittlepony.api.pony.IPony;
 import com.minelittlepony.api.pony.IPonyManager;
 import com.minelittlepony.client.MineLittlePony;
@@ -38,6 +36,10 @@ public class PonyManager implements IPonyManager, SimpleSynchronousResourceReloa
 
     private final PonyConfig config;
 
+    private final Cache<Identifier, IPony> defaultedPoniesCache = CacheBuilder.newBuilder()
+            .expireAfterAccess(30, TimeUnit.SECONDS)
+            .build();
+
     private final LoadingCache<Identifier, IPony> poniesCache = CacheBuilder.newBuilder()
             .expireAfterAccess(30, TimeUnit.SECONDS)
             .build(CacheLoader.from(Pony::new));
@@ -67,7 +69,7 @@ public class PonyManager implements IPonyManager, SimpleSynchronousResourceReloa
         try {
             return poniesCache.get(resource);
         } catch (ExecutionException e) {
-            return new Pony(resource, PonyData.MEM_NULL);
+            return new Pony(resource, PonyData.MEM_NULL, true);
         }
     }
 
@@ -111,10 +113,18 @@ public class PonyManager implements IPonyManager, SimpleSynchronousResourceReloa
         return pony;
     }
 
+    private IPony getAsDefaulted(IPony pony) {
+        try {
+            return defaultedPoniesCache.get(pony.texture(), () -> new Pony(pony.texture(), ((Pony)pony).memoizedData(), true));
+        } catch (ExecutionException e) {
+            return pony;
+        }
+    }
+
     @Override
     public IPony getDefaultPony(UUID uuid) {
         if (config.ponyLevel.get() != PonyLevel.PONIES) {
-            return ((Pony)getPony(DefaultSkinHelper.getTexture(uuid))).markDefaulted();
+            return getAsDefaulted(getPony(DefaultSkinHelper.getTexture(uuid)));
         }
 
         return getBackgroundPony(uuid);
@@ -122,17 +132,19 @@ public class PonyManager implements IPonyManager, SimpleSynchronousResourceReloa
 
     @Override
     public IPony getBackgroundPony(UUID uuid) {
-        return ((Pony)getPony(MineLittlePony.getInstance().getVariatedTextures().get(BACKGROUND_PONIES, uuid))).markDefaulted();
+        return getAsDefaulted(getPony(MineLittlePony.getInstance().getVariatedTextures().get(BACKGROUND_PONIES, uuid)));
     }
 
     @Override
     public void removePony(Identifier resource) {
         poniesCache.invalidate(resource);
+        defaultedPoniesCache.invalidate(resource);
     }
 
     public void clearCache() {
         MineLittlePony.logger.info("Flushed {} cached ponies.", poniesCache.size());
         poniesCache.invalidateAll();
+        defaultedPoniesCache.invalidateAll();
     }
 
     @Override

src/main/java/com/minelittlepony/client/render/EquineRenderManager.java

@@ -8,7 +8,6 @@ import com.minelittlepony.api.pony.network.fabric.PonyDataCallback;
 import com.minelittlepony.client.MineLittlePony;
 import com.minelittlepony.client.model.IPonyModel;
 import com.minelittlepony.client.model.ModelWrapper;
-import com.minelittlepony.client.pony.Pony;
 import com.minelittlepony.client.transform.PonyPosture;
 import com.minelittlepony.mson.api.ModelKey;
 import com.minelittlepony.util.MathUtil;
@@ -168,7 +167,7 @@ public class EquineRenderManager<T extends LivingEntity, M extends EntityModel<T
     }
 
     private void updateForEntity(IPony pony, Entity entity) {
-        if (pony.hasMetadata() && entity instanceof Pony.RegistrationHandler && ((Pony.RegistrationHandler)entity).shouldUpdateRegistration(pony)) {
+        if (pony.hasMetadata() && entity instanceof RegistrationHandler && ((RegistrationHandler)entity).shouldUpdateRegistration(pony)) {
             entity.calculateDimensions();
 
             PlayerEntity clientPlayer = MinecraftClient.getInstance().player;
@@ -216,4 +215,8 @@ public class EquineRenderManager<T extends LivingEntity, M extends EntityModel<T
 
         return y;
     }
+
+    public interface RegistrationHandler {
+        boolean shouldUpdateRegistration(IPony pony);
+    }
 }