修复模型复制多个后，保存场景后载入场景，只显示第一个的bug。

README.md

@@ -12,6 +12,7 @@ Supported Languages: 中文 / [繁體中文](README-tw.md) / [English](README-en
 ## v0.3.8即将更新
 
 1. 新增快捷键`Ctrl+Z`撤销、`Ctrl+Y`重做、`Ctrl+C`复制、`Delete`删除。
+2. 修复模型复制多个后，保存场景后载入场景，只显示第一个的bug。
 
 ## v0.3.7更新
 

ShadowEditor.Web/src/editor/menu/EditMenu.jsx

@@ -1,6 +1,7 @@
 import { MenuItem, MenuItemSeparator } from '../../third_party';
 import AddObjectCommand from '../../command/AddObjectCommand';
 import RemoveObjectCommand from '../../command/RemoveObjectCommand';
+import MeshUtils from '../../utils/MeshUtils';
 
 /**
  * 编辑菜单
@@ -117,6 +118,13 @@ class EditMenu extends React.Component {
         }
 
         object = object.clone();
+
+        // bug: 服务端模型克隆后，userData._children不正确，导致保存后无法正常显示。
+        if (object.userData.Server && Array.isArray(object.userData._children)) {
+            object.userData._children = [];
+            MeshUtils.traverseUUID(object.children, object.userData._children); // 修复模型object.userData._children数组
+        }
+
         editor.execute(new AddObjectCommand(object));
     }
 

ShadowEditor.Web/src/loader/ModelLoader.js

@@ -31,6 +31,7 @@ import SEA3DLoader from './SEA3DLoader';
 import VRMLoader from './VRMLoader';
 import VRMLLoader from './VRMLLoader';
 import XLoader from './XLoader';
+import MeshUtils from '../utils/MeshUtils';
 
 const Loaders = {
     '_3ds': _3DSLoader,
@@ -66,7 +67,7 @@ const Loaders = {
     'sea3d': SEA3DLoader,
     'vrm': VRMLoader,
     'vrml': VRMLLoader,
-    'x': XLoader,
+    'x': XLoader
 };
 
 /**
@@ -97,7 +98,7 @@ ModelLoader.prototype.load = function (url, options = {}, environment = {}) {
             resolve(null);
             return;
         }
-        (new loader(app)).load(url, options, environment).then(obj => {
+        new loader(app).load(url, options, environment).then(obj => {
             if (!obj || !obj.userData) {
                 resolve(null);
                 return;
@@ -112,7 +113,7 @@ ModelLoader.prototype.load = function (url, options = {}, environment = {}) {
             // 由于每次加载模型，uuid会变，所以要记录原始模型的uuid，而且只能记录一次。
             if (obj.children && !obj.userData._children) {
                 obj.userData._children = []; // 原始模型的uuid层次
-                this.serializeChildren(obj.children, obj.userData._children);
+                MeshUtils.traverseUUID(obj.children, obj.userData._children); // 记录最原始的模型，每个组件的uuid。
             }
 
             obj.userData.physics = obj.userData.physics || {
@@ -123,7 +124,7 @@ ModelLoader.prototype.load = function (url, options = {}, environment = {}) {
                 inertia: {
                     x: 0,
                     y: 0,
-                    z: 0,
+                    z: 0
                 }
             };
             resolve(obj);
@@ -131,26 +132,4 @@ ModelLoader.prototype.load = function (url, options = {}, environment = {}) {
     });
 };
 
-/**
- * 记录最原始的模型，每个组件的uuid。
- * @param {Array} children 每个子元素
- * @param {Array} list 数组
- */
-ModelLoader.prototype.serializeChildren = function (children, list) {
-    for (let i = 0; i < children.length; i++) {
-        let child = children[i];
-
-        let list1 = [];
-
-        if (child.children && child.children.length > 0) {
-            this.serializeChildren(child.children, list1);
-        }
-
-        list.push({
-            uuid: child.uuid,
-            children: list1,
-        });
-    }
-};
-
 export default ModelLoader;

ShadowEditor.Web/src/utils/MeshUtils.js

@@ -0,0 +1,30 @@
+
+
+/**
+ * 模型工具类
+ */
+const MeshUtils = {
+    /**
+     * 遍历模型子元素，得到uuid列表
+     * @param {THREE.Object3D} children 模型的children数组
+     * @param {Array} list uuid数组
+     */
+    traverseUUID(children, list) {
+        for (let i = 0; i < children.length; i++) {
+            let child = children[i];
+
+            let list1 = [];
+
+            if (child.children && child.children.length > 0) {
+                this.traverseUUID(child.children, list1);
+            }
+
+            list.push({
+                uuid: child.uuid,
+                children: list1
+            });
+        }
+    }
+};
+
+export default MeshUtils;