/// <summary>
/// 异步初始化
/// </summary>
public IEnumerator InitializeAsync()
{
MotionLog.Log($"Beginning to initialize patch manager.");
// 加载缓存
_cache = PatchCache.LoadCache();
// 检测沙盒被污染
// 注意：在覆盖安装的时候，会保留沙盒目录里的文件，所以需要强制清空
{
// 如果是首次打开，记录APP版本号
if (PatchHelper.CheckSandboxCacheFileExist() == false)
{
_cache.CacheAppVersion = Application.version;
_cache.SaveCache();
}
else
{
// 每次启动时比对APP版本号是否一致
if (_cache.CacheAppVersion != Application.version)
{
MotionLog.Warning($"Cache is dirty ! Cache version is {_cache.CacheAppVersion}, APP version is {Application.version}");
ClearCache();
// 重新写入最新的APP版本号
_cache.CacheAppVersion = Application.version;
_cache.SaveCache();
}
}
}
// 加载APP内的补丁清单
MotionLog.Log($"Load app patch manifest.");
{
string filePath = AssetPathHelper.MakeStreamingLoadPath(PatchDefine.PatchManifestFileName);
string url = AssetPathHelper.ConvertToWWWPath(filePath);
WebGetRequest downloader = new WebGetRequest(url);
downloader.DownLoad();
yield return(downloader);
if (downloader.HasError())
{
downloader.ReportError();
downloader.Dispose();
throw new System.Exception($"Fatal error : Failed download file : {url}");
}
// 解析补丁清单
string jsonData = downloader.GetText();
_appPatchManifest = PatchManifest.Deserialize(jsonData);
downloader.Dispose();
}
// 加载沙盒内的补丁清单
MotionLog.Log($"Load sandbox patch manifest.");
if (PatchHelper.CheckSandboxPatchManifestFileExist())
{
string filePath = AssetPathHelper.MakePersistentLoadPath(PatchDefine.PatchManifestFileName);
string jsonData = File.ReadAllText(filePath);
_localPatchManifest = PatchManifest.Deserialize(jsonData);
}
else
{
_localPatchManifest = _appPatchManifest;
}
}
public override void Update()
{
// 如果资源文件加载完毕
if (States == ELoaderStates.Success || States == ELoaderStates.Fail)
{
UpdateAllProvider();
return;
}
if (States == ELoaderStates.None)
{
// 检测加载地址是否为空
if (string.IsNullOrEmpty(BundleInfo.LocalPath))
{
States = ELoaderStates.Fail;
return;
}
if (string.IsNullOrEmpty(BundleInfo.RemoteURL))
{
States = ELoaderStates.CheckDepends;
}
else
{
States = ELoaderStates.Download;
}
}
// 1. 从服务器下载
if (States == ELoaderStates.Download)
{
_downloader = new WebFileRequest(BundleInfo.RemoteURL, BundleInfo.LocalPath);
_downloader.DownLoad();
States = ELoaderStates.CheckDownload;
}
// 2. 检测服务器下载结果
if (States == ELoaderStates.CheckDownload)
{
if (_downloader.IsDone() == false)
{
return;
}
if (_downloader.HasError())
{
_downloader.ReportError();
States = ELoaderStates.Fail;
}
else
{
// 校验文件完整性
if (AssetSystem.BundleServices.CheckContentIntegrity(BundleInfo.BundleName) == false)
{
MotionLog.Error($"Check download content integrity is failed : {BundleInfo.BundleName}");
States = ELoaderStates.Fail;
}
else
{
States = ELoaderStates.CheckDepends;
}
}
// 释放网络资源下载器
if (_downloader != null)
{
_downloader.Dispose();
_downloader = null;
}
}
// 3. 检测所有依赖完成状态
if (States == ELoaderStates.CheckDepends)
{
foreach (var dpLoader in _depends)
{
if (dpLoader.IsDone() == false)
{
return;
}
}
States = ELoaderStates.LoadFile;
}
// 4. 加载AssetBundle
if (States == ELoaderStates.LoadFile)
{
#if UNITY_EDITOR
// 注意：Unity2017.4编辑器模式下，如果AssetBundle文件不存在会导致编辑器崩溃，这里做了预判。
if (System.IO.File.Exists(BundleInfo.LocalPath) == false)
{
MotionLog.Warning($"Not found assetBundle file : {BundleInfo.LocalPath}");
States = ELoaderStates.Fail;
return;
}
#endif
// Load assetBundle file
if (BundleInfo.IsEncrypted)
{
if (AssetSystem.DecryptServices == null)
{
throw new Exception($"{nameof(AssetBundleLoader)} need IDecryptServices : {BundleInfo.BundleName}");
}
EDecryptMethod decryptType = AssetSystem.DecryptServices.DecryptType;
if (decryptType == EDecryptMethod.GetDecryptOffset)
{
ulong offset = AssetSystem.DecryptServices.GetDecryptOffset(BundleInfo);
_cacheRequest = AssetBundle.LoadFromFileAsync(BundleInfo.LocalPath, 0, offset);
}
else if (decryptType == EDecryptMethod.GetDecryptBinary)
{
byte[] binary = AssetSystem.DecryptServices.GetDecryptBinary(BundleInfo);
_cacheRequest = AssetBundle.LoadFromMemoryAsync(binary);
}
else
{
throw new NotImplementedException($"{decryptType}");
}
}
else
{
_cacheRequest = AssetBundle.LoadFromFileAsync(BundleInfo.LocalPath);
}
States = ELoaderStates.CheckFile;
}
// 5. 检测AssetBundle加载结果
if (States == ELoaderStates.CheckFile)
{
if (_cacheRequest.isDone == false)
{
return;
}
CacheBundle = _cacheRequest.assetBundle;
// Check error
if (CacheBundle == null)
{
MotionLog.Warning($"Failed to load assetBundle file : {BundleInfo.BundleName}");
States = ELoaderStates.Fail;
}
else
{
States = ELoaderStates.Success;
}
}
}