From 2dee78114564b9f2075b8b7c39076580083a3d0e Mon Sep 17 00:00:00 2001
From: Krxwallo <ken.grill@gmx.de>
Date: Thu, 4 Mar 2021 11:30:39 +0100
Subject: [PATCH] Hide a player's cape when the backpack is equipped (#6).

---
 .../renderer/entity/layers/BackpackLayer.java    | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/main/java/com/mrcrayfish/backpacked/client/renderer/entity/layers/BackpackLayer.java b/src/main/java/com/mrcrayfish/backpacked/client/renderer/entity/layers/BackpackLayer.java
index bc14cba6b..fc452e781 100644
--- a/src/main/java/com/mrcrayfish/backpacked/client/renderer/entity/layers/BackpackLayer.java
+++ b/src/main/java/com/mrcrayfish/backpacked/client/renderer/entity/layers/BackpackLayer.java
@@ -3,10 +3,10 @@
 import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.vertex.IVertexBuilder;
 import com.mrcrayfish.backpacked.Backpacked;
-import com.mrcrayfish.backpacked.Reference;
 import com.mrcrayfish.backpacked.client.model.ModelBackpack;
 import com.mrcrayfish.backpacked.integration.Curios;
 import com.mrcrayfish.backpacked.item.BackpackItem;
+import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.IRenderTypeBuffer;
 import net.minecraft.client.renderer.ItemRenderer;
 import net.minecraft.client.renderer.entity.IEntityRenderer;
@@ -14,10 +14,10 @@
 import net.minecraft.client.renderer.entity.model.BipedModel;
 import net.minecraft.client.renderer.texture.OverlayTexture;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.player.PlayerModelPart;
 import net.minecraft.inventory.EquipmentSlotType;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.Items;
-import net.minecraft.util.ResourceLocation;
 
 /**
  * Author: MrCrayfish
@@ -25,6 +25,7 @@
 public class BackpackLayer<T extends PlayerEntity, M extends BipedModel<T>> extends LayerRenderer<T, M>
 {
     private ModelBackpack<T> model;
+    private boolean backpackEnabled = false;
 
     public BackpackLayer(IEntityRenderer<T, M> renderer, ModelBackpack<T> model)
     {
@@ -41,14 +42,16 @@ public void render(MatrixStack stack, IRenderTypeBuffer renderTypeBuffer, int p_
             ItemStack chestStack = player.getItemStackFromSlot(EquipmentSlotType.CHEST);
             if(chestStack.getItem() == Items.ELYTRA)
             {
+                setBackpackEnabled(false);
                 return;
             }
 
             if(Backpacked.isCuriosLoaded() && !Curios.isBackpackVisible(player))
             {
+                setBackpackEnabled(false);
                 return;
             }
-
+            setBackpackEnabled(true);
             stack.push();
             this.getEntityModel().setModelAttributes(this.model);
             this.model.setupAngles(this.getEntityModel());
@@ -58,4 +61,11 @@ public void render(MatrixStack stack, IRenderTypeBuffer renderTypeBuffer, int p_
             stack.pop();
         }
     }
+
+    private void setBackpackEnabled(boolean enabled) {
+        if (enabled == backpackEnabled) return;
+        backpackEnabled = enabled;
+        // Enable/Disable cape.
+        Minecraft.getInstance().gameSettings.setModelPartEnabled(PlayerModelPart.CAPE, !enabled);
+    }
 }