Implement entity aware armor model and texture hooks. Closes #9960

src/main/java/net/minecraftforge/client/ForgeHooksClient.java

@@ -98,6 +98,7 @@ import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.ai.attributes.AttributeInstance;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.inventory.tooltip.TooltipComponent;
+import net.minecraft.world.item.ArmorMaterial;
 import net.minecraft.world.item.ItemDisplayContext;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.crafting.RecipeManager;
@@ -260,9 +261,9 @@ public class ForgeHooksClient {
         MinecraftForge.EVENT_BUS.post(new ClientPauseChangeEvent.Post(pause));
     }
 
-    public static String getArmorTexture(Entity entity, ItemStack armor, String _default, EquipmentSlot slot, String type) {
-        String result = armor.getItem().getArmorTexture(armor, entity, slot, type);
-        return result != null ? result : _default;
+    public static ResourceLocation getArmorTexture(Entity entity, ItemStack armor, EquipmentSlot slot, ArmorMaterial.Layer layer, boolean inner) {
+        var result = armor.getItem().getArmorTexture(armor, entity, slot, layer, inner);
+        return result != null ? result : layer.texture(inner);
     }
 
     public static boolean onDrawHighlight(LevelRenderer context, Camera camera, HitResult target, float partialTick, Matrix4f ctxPos, MultiBufferSource bufferSource) {

src/main/java/net/minecraftforge/common/extensions/IForgeItem.java

@@ -28,6 +28,7 @@ import net.minecraft.world.item.crafting.RecipeType;
 import net.minecraft.world.InteractionResult;
 import net.minecraft.core.BlockPos;
 import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.level.Level;
 import net.minecraftforge.common.ForgeHooks;
 import net.minecraftforge.common.ToolAction;
@@ -326,11 +327,12 @@ public interface IForgeItem {
      * @param stack  ItemStack for the equipped armor
      * @param entity The entity wearing the armor
      * @param slot   The slot the armor is in
-     * @param type   The subtype, can be null or "overlay"
+     * @param layer   The layer of the armor being rendered. Typically want to use {@alin ArmorMaterial.Layer#getSuffix()}.
+     * @param inner   Weither or not to use the inner texture layer.
      * @return Path of texture to bind, or null to use default
      */
     @Nullable
-    default String getArmorTexture(ItemStack stack, Entity entity, EquipmentSlot slot, String type) {
+    default ResourceLocation getArmorTexture(ItemStack stack, Entity entity, EquipmentSlot slot, ArmorMaterial.Layer layer, boolean inner) {
         return null;
     }