// 开始加载
protected override void StartLoad()
{
string path = BundleLoader.GetAssetBundlePath(AssetPath);
m_request = UnityWebRequest.Get(path);
m_request.SendWebRequest();
}
protected override void StartLoad()
{
string path = BundleLoader.GetAssetPathBySyncLoad(AssetPath);
try
{
Bundle = AssetBundle.LoadFromFile(path);
}
catch (Exception ex)
{
// 加载失败后尝试下载
UnityEngine.Debug.Log(string.Format("Load asset failed, asset: {0}, exception: {1}", AssetPath, ex.Message));
TryToDownload();
return;
}
OnSucceed();
}
IEnumerator EtorDownload()
{
/*
* 总结：
* 自己写的超时逻辑，超时一定要用 Abort() 来终结，调用 Abort 后会触发错误，但有时却不触发错误，此时可能会导致协和永远死循环，因此用 time out 来做第二层保护
*/
using (UnityWebRequest uwrItem = UnityWebRequest.Get(Url))
{
int uwrTimeout = Mathf.Max(60, BundleObj.Length / AllowMinSpeed);
uwrItem.timeout = uwrTimeout;
uwrItem.SendWebRequest();
float blockTimer = TimeOut;
float timer = uwrTimeout + 30;
ulong downloadedBytes = 0;
while (!uwrItem.isDone)
{
if (timer < 0)
{
uwrItem.Abort();
OnFailed("Manual timeout");
yield break;
}
else
{
timer -= Time.deltaTime;
}
if (uwrItem.isHttpError || uwrItem.isNetworkError)
{
OnFailed("Time out, " + uwrItem.error);
yield break;
}
if (downloadedBytes == uwrItem.downloadedBytes)
{
// 检测是否超时
//Debug.Log("block time: " + blockTimer);
if (blockTimer < 0)
{
uwrItem.Abort();
}
else
{
blockTimer -= Time.deltaTime;
}
}
else
{
downloadedBytes = uwrItem.downloadedBytes;
blockTimer = TimeOut;
//Debug.Log(string.Format("#1 {0} {1} {2}", uwrItem.downloadedBytes, DownloadedBytes, item.Name));
}
yield return(null);
}
if (uwrItem.isHttpError || uwrItem.isNetworkError)
{
OnFailed(uwrItem.error);
yield break;
}
// 写入磁盘
string localPath = BundleLoader.GetAssetBundlePersistPath(BundleObj.Name);
string writeError;
bool writeSucceed = WriteBytes(localPath, uwrItem.downloadHandler.data, out writeError);
if (writeSucceed)
{
OnSucceed();
}
else
{
OnFailed(uwrItem.error);
}
}
}
