Item refactoring

assets/Media/Prefabs/Game/Drops/Chest.prefab

@@ -308,23 +308,6 @@
     "__type__": "cc.CompPrefabInfo",
     "fileId": "cfXyVJoitMGp/0liEUZfNP"
   },
-  {
-    "__type__": "7a536G2OudFtpTsoF8yLXiW",
-    "_name": "",
-    "_objFlags": 0,
-    "node": {
-      "__id__": 1
-    },
-    "_enabled": true,
-    "__prefab": {
-      "__id__": 15
-    },
-    "_id": ""
-  },
-  {
-    "__type__": "cc.CompPrefabInfo",
-    "fileId": "72AObOIbxCf6LIYsYqoFZF"
-  },
   {
     "__type__": "cc.Animation",
     "_name": "",
@@ -334,7 +317,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 17
+      "__id__": 15
     },
     "playOnLoad": true,
     "_clips": [
@@ -362,10 +345,10 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 19
+      "__id__": 17
     },
     "tag": 0,
-    "_group": 1,
+    "_group": 16,
     "_density": 1,
     "_sensor": false,
     "_friction": 0.2,
@@ -386,6 +369,24 @@
     "__type__": "cc.CompPrefabInfo",
     "fileId": "b5zZIKDzhK3q3Rd8OiKUPa"
   },
+  {
+    "__type__": "724bauqfhVH0YWsXug16uHL",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 1
+    },
+    "_enabled": true,
+    "__prefab": {
+      "__id__": 19
+    },
+    "itemType": 4,
+    "_id": ""
+  },
+  {
+    "__type__": "cc.CompPrefabInfo",
+    "fileId": "9eD6pXLdNKw4xswCPxsN+q"
+  },
   {
     "__type__": "cc.PrefabInfo",
     "root": {