在硬盘中下载AssetBundle

1 回答

• 3

  这并不复杂 . 处理它就像你从互联网上下载的普通文件，但保存".unity3d"扩展名 .

  1 . 通过 UnityWebRequest 发出请求，将 AssetBundle 下载为普通文件 .

  UnityWebRequest www = UnityWebRequest.Get(url);
  yield return www.Send();
  

  2 . 使用 DownloadHandler.data 检索字节数组数据，然后将其保存到 Application.persistentDataPath/yourfolder/filename.unity3d . 确保扩展名为".unity3d" .

  File.WriteAllBytes(handle.data, data);
  

  而已 .

  3 . 要加载数据，请使用 AssetBundle.LoadFromFile 或 AssetBundle.LoadFromFileAsync ：

  AssetBundleCreateRequest bundle = AssetBundle.LoadFromFileAsync(path);
  

  ---

  如果仍然困惑，这就是应该是什么样子 . 您可能需要进行一些修改：

  Download and Save:

  IEnumerator downloadAsset()
  {
      string url = "http://url.net/YourAsset.unity3d";
  
      UnityWebRequest www = UnityWebRequest.Get(url);
      DownloadHandler handle = www.downloadHandler;
  
      //Send Request and wait
      yield return www.Send();
  
      if (www.isError)
      {
  
          UnityEngine.Debug.Log("Error while Downloading Data: " + www.error);
      }
      else
      {
          UnityEngine.Debug.Log("Success");
  
          //handle.data
  
          //Construct path to save it
          string dataFileName = "WaterVehicles";
          string tempPath = Path.Combine(Application.persistentDataPath, "AssetData");
          tempPath = Path.Combine(tempPath, dataFileName + ".unity3d");
  
          //Save
          save(handle.data, tempPath);
      }
  }
  
  void save(byte[] data, string path)
  {
      //Create the Directory if it does not exist
      if (!Directory.Exists(Path.GetDirectoryName(path)))
      {
          Directory.CreateDirectory(Path.GetDirectoryName(path));
      }
  
      try
      {
          File.WriteAllBytes(path, data);
          Debug.Log("Saved Data to: " + path.Replace("/", "\\"));
      }
      catch (Exception e)
      {
          Debug.LogWarning("Failed To Save Data to: " + path.Replace("/", "\\"));
          Debug.LogWarning("Error: " + e.Message);
      }
  }
  

  Load ：

  IEnumerable LoadObject(string path)
  {
      AssetBundleCreateRequest bundle = AssetBundle.LoadFromFileAsync(path);
      yield return bundle;
  
      AssetBundle myLoadedAssetBundle = bundle.assetBundle;
      if (myLoadedAssetBundle == null)
      {
          Debug.Log("Failed to load AssetBundle!");
          yield break;
      }
  
      AssetBundleRequest request = myLoadedAssetBundle.LoadAssetAsync<GameObject>("boat");
      yield return request;
  
      GameObject obj = request.asset as GameObject;
      obj.transform.position = new Vector3(0.08f, -2.345f, 297.54f);
      obj.transform.Rotate(350.41f, 400f, 20f);
      obj.transform.localScale = new Vector3(1.0518f, 0.998f, 1.1793f);
  
      Instantiate(obj);
  
      myLoadedAssetBundle.Unload(false);
  }
  

  回复于 2024-04-27T14:32:14+08:00