Implemented item models for cables.

src/main/java/appeng/items/parts/ItemMultipartRendering.java

@@ -1,6 +1,9 @@
 package appeng.items.parts;
 
 
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
 import net.minecraft.client.renderer.block.model.ModelResourceLocation;
 import net.minecraft.item.ItemStack;
 
@@ -21,13 +24,19 @@ public class ItemMultipartRendering extends ItemRenderingCustomizer
 	@Override
 	public void customize( IItemRendering rendering )
 	{
+
 		rendering.meshDefinition( this::getItemMeshDefinition );
+
+		// Register all item models as variants so they get loaded
+		rendering.variants( Arrays.stream( PartType.values() )
+				.flatMap( part -> part.getItemModels().stream() )
+				.collect( Collectors.toList() ) );
 	}
 
 	private ModelResourceLocation getItemMeshDefinition( ItemStack is )
 	{
-		// TODO: Avoid object creation here. This happens every frame
-		return new ModelResourceLocation( item.getTypeByStack( is ).getModel(), null );
+		PartType partType = item.getTypeByStack( is );
+		int variant = item.variantOf( is.getItemDamage() );
+		return partType.getItemModels().get( variant );
 	}
-
 }