1

src/babylonjs/AppHotspot.ts

@@ -148,9 +148,9 @@ export class AppHotspot extends Monobehiver {
         }
 
         // 释放sprite资源
-        if (point.sprite) {
-          point.sprite.dispose();
-        }
+        // if (point.sprite) {
+        //   point.sprite.dispose();
+        // }
       }
 
       // 清空热点池

src/babylonjs/AppModel.ts

@@ -149,6 +149,54 @@ export class AppModel extends Monobehiver {
         this.skeletonMerged = false;
     }
 
+    /**
+     * 添加模型到场景
+     * @param modelUrl 模型URL路径
+     */
+    async addModel(modelUrl: string): Promise<LoadResult> {
+        const handleProgress = (event: ISceneLoaderProgressEvent): void => {
+            const progress = event.lengthComputable && event.total > 0
+                ? Math.min(1, event.loaded / event.total)
+                : 0;
+            EventBridge.modelLoadProgress({
+                loaded: progress,
+                total: 1,
+                url: modelUrl,
+                progress,
+                percentage: Number((progress * 100).toFixed(2)),
+                detail: {
+                    url: modelUrl,
+                    lengthComputable: event.lengthComputable,
+                    loadedBytes: event.loaded,
+                    totalBytes: event.total
+                }
+            });
+        };
+
+        const result = await this.loadSingleModel(modelUrl, handleProgress);
+
+        if (result.success) {
+            EventBridge.modelLoaded({ urls: [modelUrl] });
+        } else {
+            EventBridge.modelLoadError({ url: modelUrl, error: result.error });
+        }
+
+        return result;
+    }
+
+    /**
+     * 替换模型：销毁旧模型并加载新模型
+     * @param modelName 要替换的模型名称
+     * @param newModelUrl 新模型的URL路径
+     */
+    async replaceModel(modelName: string, newModelUrl: string): Promise<LoadResult> {
+        // 先销毁旧模型
+        this.destroyModel(modelName);
+
+        // 加载新模型
+        return await this.addModel(newModelUrl);
+    }
+
     /**
      * 销毁指定模型
      * @param modelName 模型名称