.unity3d格式的导出与加载

using UnityEngine;  
using UnityEditor;  
using System.IO;  
public class BuildAssetBundlesFromDirectory {  
  
    [@MenuItem("Asset/Build AssetBundles From Directory of Files")]  //生成菜单
  
    static void ExportAssetBundles () {  
  
        // Get the selected directory   
  
        //获取选择的目录   
  
        string path = AssetDatabase.GetAssetPath(Selection.activeObject);  
  
        Debug.Log("Selected Folder: " + path);  
  
        if (path.Length != 0) {  
  
            path = path.Replace("Assets/", "");  
  
            string [] fileEntries = Directory.GetFiles(Application.dataPath+"/"+path);  
  
            foreach(string fileName in fileEntries) {  
  
                string filePath = fileName.Replace("\","/");  
  
                int index = filePath.LastIndexOf("/");  
  
                filePath = filePath.Substring(index+1);  
  
                Debug.Log("filePath:"+filePath);  
  
                string localPath = "Assets/" + path+"/";  
  
                if (index > 0)  
  
                localPath += filePath;  
  
                Object t = AssetDatabase.LoadMainAssetAtPath(localPath);  
  
                if (t != null) {  
  
                    Debug.Log(t.name);  
  
                    string bundlePath = "Assets/" + path + "/" + t.name + ".unity3d";  
  
                    Debug.Log("Building bundle at: " + bundlePath);  
  
                    // Build the resource file from the active selection.   
  
                    //从激活的选择编译资源文件   
  
                    BuildPipeline.BuildAssetBundle  
  
                    (t, null, bundlePath, BuildAssetBundleOptions.CompleteAssets);  
  
                }  
  
  
   
            }  
  
        }  
  
    }  
  
}  using UnityEngin