/// <summary>
/// 映射asset和asset bundle之间的路径关系
/// 1. 先映射只读文件夹里的
/// 2. 再映射读写文件夹里的
/// 因为只读文件需要使用www读取，所以理论上是异步读取，要通过回调函数返回完成
/// </summary>
/// <param name="_complete"></param>
private void MappingAssetToAssetBundle(Action _complete)
{
// 先映射StreamingAssets下的
var readOnlyVersionFileDir = AssetBundleDefine.GetReadOnlyPathByWWW();
WWWLoadBytes.Instance.LoadBytes(
string.Format("{0}/{1}", readOnlyVersionFileDir, AssetBundleDefine.VERSION_LOCAL_FILE),
(s, bytes, _errorMessage) =>
{
if (false == string.IsNullOrEmpty(_errorMessage))
{
this.Error("无法读取StreamingAsset中的文件配置 url : " + s + " error message : " + _errorMessage);
}
MappingAssetToAssetBundle(GameFramework.Utility.Zip.Decompress(bytes),
string.Format("{0}/{1}/{2}", UnityEngine.Application.streamingAssetsPath,
AssetBundleDefine.READ_ONLY_DIR, AssetBundleDefine.RuntimePlatformName()));
// 再映射可读写目录的
var versionFileBytes = FileSystemFacade.Instance.ReadFile(AssetBundleDefine.GetReadWritePath());
MappingAssetToAssetBundle(versionFileBytes /**已经是解压过的*/,
string.Format("{0}/{1}/{2}", UnityEngine.Application.persistentDataPath,
AssetBundleDefine.AssetBundlesDir, AssetBundleDefine.RuntimePlatformName()));
if (null != _complete)
{
_complete();
}
});
}
/// <summary>
/// 获取一个资源的下载路径
/// </summary>
/// <param name="_versionItem"></param>
/// <returns></returns>
private string GetDownloadPath(AssetBundleVersionItem _versionItem)
{
if (null == _versionItem)
{
return(null);
}
string downloadFullPath =
string.Format("{0}/{1}/{2}${3}.dat", AssetBundleDefine.SERVER_RES_PATH, AssetBundleDefine.RuntimePlatformName(), _versionItem.ItemName, _versionItem.MD5);
return(downloadFullPath);
}
/// <summary>
/// 游戏开始下载必要数据
/// </summary>
private void GameStartDownload()
{
startDownloadHandler = GetDownloadHandler(AssetPathType.persisent);
if (null != startDownloadHandler)
{
// 添加Manifest的下载
startDownloadHandler.AddTask(
string.Format("{0}/{1}/{2}", AssetBundleDefine.SERVER_RES_PATH, AssetBundleDefine.RuntimePlatformName(), AssetBundleDefine.MANIFEST_FILE),
DownloadResType.ByteArray, ManifestDlwonloadComplete, null);
startDownloadHandler.SetCallBack(DownloadUpdateInfo, GameStartDownloadComplete);
startDownloadHandler.StartDownload();
}
}
/// <summary>
/// asset bundle 依赖关系映射
/// </summary>
private void AssetBundleDependent()
{
// 读取manifest文件
string manifestFilePath = string.Format("{0}/{1}/{2}/{3}", App.Make <IFileDiskSystem>().GetDiskPath(),
AssetBundleDefine.AssetBundlesDir, AssetBundleDefine.RuntimePlatformName(), AssetBundleDefine.MANIFEST_FILE);
var manifestAssetBundle = AssetBundle.LoadFromFile(manifestFilePath);
if (null != manifestAssetBundle)
{
var manifest = manifestAssetBundle.LoadAsset <AssetBundleManifest>("AssetBundleManifest");
if (null != manifest)
{
dependentAssetBundles.Clear(); // 先清空列表
string[] assetBundles = manifest.GetAllAssetBundles(); // 只有存在依赖关系的，才会再这个数组中，Scene不会
if (null == assetBundles || assetBundles.Length <= 0)
{
return;
}
foreach (string bundle in assetBundles)
{
if (null == bundle)
{
continue;
}
string[] dependencies = manifest.GetAllDependencies(bundle);
if (true == dependentAssetBundles.ContainsKey(bundle))
{
dependentAssetBundles.Remove(bundle);
}
if (dependencies.Length > 0)
{
dependentAssetBundles.Add(bundle, dependencies); // 如果依赖关系 大于0 ,则添加到依赖关系队列中
}
}
}
manifestAssetBundle.Unload(true);
}
}
/// <summary>
/// 资源更新入口
/// </summary>
public void UpdateGameResources()
{
string versionFile = string.Format("{0}/{1}/{2}", AssetBundleDefine.SERVER_RES_PATH, AssetBundleDefine.RuntimePlatformName(), AssetBundleDefine.VERSION_FILE);
this.Info("version file path = " + versionFile);
App.Make <IHttpRequest>().GetBytes(versionFile, bytes =>
{
if (null == bytes || bytes.Length <= 0)
{
this.Error("Version文件下载失败");
return;
}
var decompressBytes = GameFramework.Utility.Zip.Decompress(bytes);
string versionContent = System.Text.Encoding.UTF8.GetString(decompressBytes);
if (true == string.IsNullOrEmpty(versionContent))
{
this.Error("Version文件解析失败");
return;
}
// 存入本地，并不是做对比使用，而是name和path映射做准备
App.Make <IFileDiskSystem>()
.CreateFile(string.Format("{0}/{1}/{2}", AssetBundleDefine.AssetBundlesDir, AssetBundleDefine.RuntimePlatformName(), AssetBundleDefine.VERSION_FILE),
decompressBytes);
serverVersion = JsonUtility.FromJson <AssetBundleVersion>(versionContent);
if (null == serverVersion)
{
this.Error("version文件转换失败");
return;
}
var downloadList = CheckDownloadList(serverVersion.AssetBundleVersionItems, AssetPathType.persisent);
downloadInfo.SetDownloadList(AssetPathType.persisent, downloadList);
if (downloadList.Count > 0)
{
this.Debug("总计下载文件个数 = " + downloadList.Count + " 大小 = " + downloadInfo.DownloadSizeCountDes);
// 这里要根据网络情况，判断是否直接下载
if (UnityEngine.Application.internetReachability == NetworkReachability.ReachableViaLocalAreaNetwork) // 移动网络
{
// 开始下载
AppEvent.BroadCastEvent(AssetBundleDefine.EVENT_GAME_START_RESOURCES_UPDATE);
}
else if (UnityEngine.Application.internetReachability == NetworkReachability.ReachableViaCarrierDataNetwork) // WIFI网络
{
// 询问玩家
AppEvent.BroadCastEvent(AssetBundleDefine.EVENT_ASK_UPDATE_RESOURCES, downloadInfo);
}
}
else
{
GameStartDownloadComplete(null); // 没有最新资源需要下载
}
}, _errorCode =>
{
this.Error("Version文件下载失败 error code = " + _errorCode);
});
}
/// <summary>
/// 获取本地存储路径
/// </summary>
/// <param name="_versionItem"></param>
/// <returns></returns>
public static string GetFileLocalPath(AssetBundleVersionItem _versionItem)
{
if (null == _versionItem)
{
return(null);
}
string fileFullPath = string.Format("{0}/{1}/{2}${3}.dat", AssetBundleDefine.AssetBundlesDir, AssetBundleDefine.RuntimePlatformName(), _versionItem.ItemName, _versionItem.MD5);
return(fileFullPath);
}
/// <summary>
/// 将manifest写入本地
/// </summary>
/// <param name="s"></param>
/// <param name="o"></param>
/// <param name="arg3"></param>
private void ManifestDlwonloadComplete(string s, object o, object arg3)
{
byte[] bytes = (byte[])o;
string localPath = string.Format("{0}/{1}/{2}", AssetBundleDefine.AssetBundlesDir, AssetBundleDefine.RuntimePlatformName(), AssetBundleDefine.MANIFEST_FILE);
App.Make <IFileDiskSystem>().CreateFile(localPath, bytes);
}