优化客户端材质

core/src/main/java/net/momirealms/craftengine/core/item/AbstractItem.java

@@ -429,6 +429,11 @@ public class AbstractItem<W extends ItemWrapper<I>, I> implements Item<I> {
         return new AbstractItem<>(this.factory, this.factory.transmuteCopy(this.item, another, count));
     }
 
+    @Override
+    public Item<I> unsafeTransmuteCopy(Object another, int count) {
+        return new AbstractItem<>(this.factory, this.factory.unsafeTransmuteCopy(this.item, another, count));
+    }
+
     @SuppressWarnings({"unchecked", "rawtypes"})
     @Override
     public void merge(Item<I> another) {

core/src/main/java/net/momirealms/craftengine/core/item/Item.java

@@ -181,6 +181,8 @@ public interface Item<I> {
 
     Item<I> transmuteCopy(Key another, int count);
 
+    Item<I> unsafeTransmuteCopy(Object another, int count);
+
     void shrink(int amount);
 
     default Item<I> transmuteCopy(Key another) {

core/src/main/java/net/momirealms/craftengine/core/item/ItemFactory.java

@@ -196,4 +196,6 @@ public abstract class ItemFactory<W extends ItemWrapper<I>, I> {
     protected abstract void setNBTComponent(W item, Object type, Tag value);
 
     protected abstract W transmuteCopy(W item, Key newItem, int amount);
+
+    protected abstract W unsafeTransmuteCopy(W item, Object newItem, int count);
 }

core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java

@@ -116,6 +116,7 @@ public abstract class AbstractPackManager implements PackManager {
 
         loadInternalList("models", "block/", VANILLA_MODELS::add);
         loadInternalList("models", "item/", VANILLA_MODELS::add);
+        VANILLA_MODELS.add(Key.of("minecraft", "builtin/entity"));
     }
 
     private void loadInternalData(String path, BiConsumer<Key, JsonObject> callback) {