/// <summary>
/// 初始化
/// </summary>
IEnumerator Preprocess()
{
//创建资源根目录
if (!Directory.Exists(Common.PATH))
{
Directory.CreateDirectory(Common.PATH);
}
//判断主资源文件是否存在，不存在则拷贝备份资源至资源根目录
bool do_initial_copy = false;
string resources_manifest_file = Common.GetFileFullName(Common.RESOURCES_MANIFEST_FILE_NAME);
if (!File.Exists(resources_manifest_file))
{
do_initial_copy = true;
}
else
{
// 拷贝安装包初始化目录中的ResourcesManifest，并判断是否重新拷贝初始化目录下的所有文件
string full_name = Common.GetFileFullName(Common.RESOURCES_MANIFEST_FILE_NAME);
string initial_full_name = Common.GetInitialFileFullName(Common.RESOURCES_MANIFEST_FILE_NAME);
string cache_full_name = Common.GetCacheFileFullName(Common.RESOURCES_MANIFEST_FILE_NAME);
yield return(Common.StartCopyFile(initial_full_name, cache_full_name));
//判断安装包初始目录是否完整
ResourcesManifest initial = Common.LoadResourcesManifestByPath(cache_full_name);
if (initial == null)
{
Error(emErrorCode.PreprocessError
, "Initial path don't contains "
+ Common.RESOURCES_MANIFEST_FILE_NAME + "!");
yield break;
}
ResourcesManifest current = Common.LoadResourcesManifestByPath(full_name);
if (current == null)
{
do_initial_copy = true;
}
else if (current.Data.Version < initial.Data.Version)
{
do_initial_copy = true;
}
//删除缓存中的文件
if (File.Exists(cache_full_name))
{
File.Delete(cache_full_name);
}
}
if (do_initial_copy)
{
yield return(CopyAllInitialFiles());
}
PreprocessFinished();
}
/// <summary>
/// 写入下载缓存信息，用于断点续传
/// </summary>
void SaveDownloadCacheData()
{
if (CurrentState < emState.UpdateAssetBundle)
{
return;
}
if (!Directory.Exists(Common.CACHE_PATH))
{
return;
}
//载入新的Manifest
string new_manifest_name = Common.GetCacheFileFullName(Common.MAIN_MANIFEST_FILE_NAME);
AssetBundleManifest new_manifest = Common.LoadMainManifestByPath(new_manifest_name);
if (new_manifest == null)
{
return;
}
//先尝试读取旧的缓存信息，再保存现在已经下载的数据
//PS:由于只有版本完整更新完才会移动Cache目录，且玩家可能多次尝试下载更新，所以必须保留旧的缓存信息
DownloadCache cache = new DownloadCache();
cache.Load(Common.DOWNLOADCACHE_FILE_PATH);
if (ab_download_ != null &&
ab_download_.CompleteDownloads != null &&
ab_download_.CompleteDownloads.Count > 0)
{
for (int i = 0; i < ab_download_.CompleteDownloads.Count; ++i)
{
string assetbundle_name = ab_download_.CompleteDownloads[i];
Hash128 hash_code = new_manifest.GetAssetBundleHash(assetbundle_name);
if (hash_code.isValid && !cache.Data.AssetBundles.ContainsKey(assetbundle_name))
{
DownloadCacheData.AssetBundle elem = new DownloadCacheData.AssetBundle()
{
AssetBundleName = assetbundle_name,
Hash = hash_code.ToString(),
};
Debug.Log(cache.Data.AssetBundles.Count + " - Cache Add:" + assetbundle_name);
cache.Data.AssetBundles.Add(assetbundle_name, elem);
}
}
}
if (cache.HasData())
{
cache.Save(Common.DOWNLOADCACHE_FILE_PATH);
}
}
/// <summary>
/// 拷贝文件并覆盖旧数据文件
/// </summary>
IEnumerator StartCopyCacheFile()
{
if (ErrorCode != emErrorCode.None)
{
yield break;
}
//从缓存中拷贝主配置文件覆盖旧文件
for (int i = 0; i < Common.MAIN_CONFIG_NAME_ARRAY.Length; ++i)
{
string str = Common.GetCacheFileFullName(Common.MAIN_CONFIG_NAME_ARRAY[i]);
string dest = Common.GetFileFullName(Common.MAIN_CONFIG_NAME_ARRAY[i]);
UpdateCompleteValue(i, Common.MAIN_CONFIG_NAME_ARRAY.Length);
yield return(Common.StartCopyFile(str, dest));
}
}
/// <summary>
/// 更新AssetBundle
/// </summary>
IEnumerator StartUpdateAssetBundle()
{
if (ErrorCode != emErrorCode.None)
{
yield break;
}
UpdateCompleteValue(0f, 0f);
//载入新的ResourcesManifest
ResourcesManifest old_resource_manifest = AssetBundleManager.Instance.ResourcesManifest;
string file = Common.GetCacheFileFullName(Common.RESOURCES_MANIFEST_FILE_NAME);
ResourcesManifest new_resources_manifest = Common.LoadResourcesManifestByPath(file);
if (new_resources_manifest == null)
{
Error(emErrorCode.LoadNewResourcesManiFestFailed, "Can't load new verion ResourcesManifest!");
yield break;
}
//载入MainManifest
AssetBundleManifest manifest = AssetBundleManager.Instance.MainManifest;
file = Common.GetCacheFileFullName(Common.MAIN_MANIFEST_FILE_NAME);
AssetBundleManifest new_manifest = Common.LoadMainManifestByPath(file);
if (new_manifest == null)
{
Error(emErrorCode.LoadNewMainManifestFailed, "Can't find new version MainManifest!");
yield break;
}
//获取需下载的资源列表与删除的资源的列表
List <string> download_files = new List <string>();
List <string> delete_files = new List <string>();
CompareAssetBundleDifference(ref download_files, ref delete_files, manifest, new_manifest, old_resource_manifest, new_resources_manifest);
//删除已废弃的文件
if (delete_files.Count > 0)
{
for (int i = 0; i < delete_files.Count; ++i)
{
string full_name = Common.GetFileFullName(delete_files[i]);
if (File.Exists(full_name))
{
File.Delete(full_name);
yield return(0);
}
}
}
//更新所有需下载的资源
ab_download_ = new AssetBundleDownloader(current_url_);
ab_download_.Start(Common.PATH, download_files, new_resources_manifest);
while (!ab_download_.IsDone)
{
UpdateCompleteValue(ab_download_.CompletedSize, ab_download_.TotalSize);
yield return(0);
}
if (ab_download_.IsFailed)
{
Error(emErrorCode.DownloadAssetBundleFailed);
yield break;
}
}
