/// <summary>
/// 写入下载缓存信息用于断点续传
/// </summary>
void SaveDownloadCacheData()
{
if (currentState < State.UpdateAssetBundle)
{
return;
}
if (!Directory.Exists(PathResolver.CACHE_PATH))
{
return;
}
var manifestPath = PathResolver.GetCacheFileFullName(PathResolver.MAIN_MANIFEST_FILE_NAME);
var manifestFile = PathResolver.LoadMainManifestByPath(manifestPath);
if (null == manifestFile)
{
return;
}
//加载缓存信息文件
var cache = new DownloadCache();
cache.Load(PathResolver.DOWNLOADCACHE_FILE_PATH);
//获取下载器完成任务列表
if (m_Downloader != null && m_Downloader.completeDownloads != null && m_Downloader.completeDownloads.Count > 0)
{
foreach (var name in m_Downloader.completeDownloads)
{
var hashCode = manifestFile.GetAssetBundleHash(name);
if (hashCode.isValid && !cache.data.assetBundles.ContainsKey(name))
{
var elem = new DownloadCacheData.AssetBundle()
{
assetbundleName = name, hash = hashCode.ToString()
};
Debug.Log(cache.data.assetBundles.Count + " - Cache Add:" + name);
cache.data.assetBundles.Add(name, elem);
}
}
}
if (!cache.IsEmpty())
{
cache.Save(PathResolver.DOWNLOADCACHE_FILE_PATH);
}
}
void CompareAsset(
ref List <string> downFiles,
ref List <string> deleteFiles,
AssetBundleManifest oldManifest,
AssetBundleManifest newManifest,
ResourcesManifest oldResManifest,
ResourcesManifest newResManifest)
{
if (downFiles != null)
{
downFiles.Clear();
}
if (deleteFiles != null)
{
deleteFiles.Clear();
}
if (oldManifest == null)
{
Error(ErrorCode.LoadMainManifestFailed, "Local Manifest no Find");
return;
}
if (newManifest == null)
{
Error(ErrorCode.LoadNewMainManifestFailed, "Load New MainManifest no Find");
return;
}
if (newResManifest == null)
{
Error(ErrorCode.loadNewResourcesManiFestFailed, "Load New ResourceManifest no Find");
return;
}
//标记位
var old_ver_bit = 1 << 0; //存在旧资源
var new_ver_bit = 1 << 1; //存在新资源
var old_ver_native_bit = 1 << 2; //存在旧的本地资源
var new_ver_native_bit = 1 << 3; //存在新的本地资源
var tempDic = new Dictionary <string, int>();
//标记旧资源
var allAssetBundle = oldManifest.GetAllAssetBundles();
foreach (var name in allAssetBundle)
{
SetDictionaryBit(ref tempDic, name, old_ver_bit);
}
//标记新资源
var allNewAssetBundle = newManifest.GetAllAssetBundles();
foreach (var name in allNewAssetBundle)
{
SetDictionaryBit(ref tempDic, name, new_ver_bit);
}
//标记旧本地资源
if (oldResManifest.data != null && oldResManifest.data.assetbundles != null)
{
var itor = oldResManifest.data.assetbundles.GetEnumerator();
while (itor.MoveNext())
{
if (itor.Current.Value.isNative)
{
var name = itor.Current.Value.assetBundleName;
SetDictionaryBit(ref tempDic, name, old_ver_native_bit);
}
}
}
//标记新的本地资源
if (newResManifest.data != null && newResManifest.data.assetbundles != null)
{
var itor = newResManifest.data.assetbundles.GetEnumerator();
while (itor.MoveNext())
{
if (itor.Current.Value.isNative)
{
var name = itor.Current.Value.assetBundleName;
SetDictionaryBit(ref tempDic, name, new_ver_native_bit);
}
}
}
//优先级：both>add>delete
//both: 第0位和第1位标记的
//delete : 第0位标记
//add:第2位未标记，第3位标记的
int both = old_ver_bit | new_ver_bit;//2个版本都存在的资源
var addFiles = new List <string>();
var bothFiles = new List <string>();
using (var itor = tempDic.GetEnumerator())
{
while (itor.MoveNext())
{
var name = itor.Current.Key;
var mask = itor.Current.Value;
if ((mask & new_ver_native_bit) == new_ver_native_bit &&
(mask & old_ver_native_bit) == 0)
{
addFiles.Add(name);
}
else if ((mask & both) == both)
{
bothFiles.Add(name);
}
else if ((mask & old_ver_bit) == old_ver_bit)
{
deleteFiles.Add(name);
}
}
itor.Dispose();
}
//加载下载缓存数据
var download = new DownloadCache();
download.Load(PathResolver.DOWNLOADCACHE_FILE_PATH);
if (download.IsEmpty())
{
download = null;
}
//记录需要下载的文件
{
//加入新增文件
downFiles.AddRange(addFiles);
//判断同时存在文件的哈希
foreach (var name in bothFiles)
{
var fullName = PathResolver.GetFileFullName(name);
if (File.Exists(fullName))
{
//判断哈希是否相同
var oldHash = oldManifest.GetAssetBundleHash(name).ToString();
var newHash = newManifest.GetAssetBundleHash(name).ToString();
if (oldHash.CompareTo(newHash) == 0)
{
continue;
}
downFiles.Add(name);
}
}
//过滤已下载的文件
if (null != download)
{
var itor = download.data.assetBundles.GetEnumerator();
while (itor.MoveNext())
{
var elem = itor.Current.Value;
var name = elem.assetbundleName;
var fullName = PathResolver.GetFileFullName(name);
if (File.Exists(fullName))
{
var cacheHash = elem.hash;
var newHash = newManifest.GetAssetBundleHash(name).ToString();
if (!string.IsNullOrEmpty(cacheHash) && cacheHash.CompareTo(newHash) == 0)
{
downFiles.Remove(name);
}
}
}
}
}
}
