/// <summary>
/// 留给外部的接口，根据bundle名异步加载文件，回调需要提前赋值
/// </summary>
/// <param name="bundleName"></param>
/// <returns></returns>
internal IEnumerator LoadFileAsync(string bundleName)
{
//是否使用StreamingAssets?
if (!string.IsNullOrEmpty(pather.OriginMainManifest))
{
var streamingPath = @Path.Combine(Application.streamingAssetsPath, bundleName);
if (File.Exists(streamingPath))
{
// Debug.Log("LoadStreaming");
yield return(LoadBundleAsync(bundleName, null, BundleLoadMethod.File_StreamingBundle));
yield break;
}
}
//是否使用服务器资源
if (!string.IsNullOrEmpty(pather.WebServeMainManifest))
{
Assert.IsNotNull(version);
while (!version.IsUpdateToServe)
{
yield return(null);
}
var bundleVersion = version.currentServeVersion;
var localBundlePath = pather.GetLocalBundlePath(bundleName, bundleVersion);
if (File.Exists(localBundlePath))
{
// Debug.Log("LoadLocalFile");
yield return(LoadBundleAsync(bundleName, bundleVersion, BundleLoadMethod.File_LocalBundle));
yield break;
}
// Debug.Log("LoadWWW");
yield return(LoadBundleAsync(bundleName, bundleVersion, BundleLoadMethod.WWW_LoadBundleAndBytes,
true));
yield break;
}
Debug.LogError("没有这个AssetBundle: " + bundleName);
}
/// <summary>
/// 从服务器下载并保存新资源包
/// </summary>
/// <param name="bundleName"></param>
/// <param name="bundleVersion"></param>
/// <returns></returns>
private IEnumerator DownloadAndSaveBundle(string bundleName, string bundleVersion)
{
//获取服务器请求url
var requestUrl = pather.GetServeBundlePath(bundleName, bundleVersion);
var webBytesLoadRequest = UnityWebRequest.Get(requestUrl);
yield return(webBytesLoadRequest.SendWebRequest());
byte[] bs = webBytesLoadRequest.downloadHandler.data;
//获取本地包存储路径
var localPath = pather.GetLocalBundlePath(bundleName, bundleVersion);
//将服务器获得的新包数据保存到本地
FileUtil.CreateFile(localPath, bs);
}