void Init()
{
AssetBundle assetBundle = AssetBundle.LoadFromFile(CustomAssetBundleManifest.PlaformPath);
if (assetBundle == null)
{
throw new System.Exception("failed to create manifest assetBundle");
}
var text = assetBundle.LoadAsset <TextAsset>(AssetBundleConfig.ManifestName);
if (text == null)
{
throw new System.Exception("failed to load manifest");
}
Manifest = CustomAssetBundleManifest.CreateInstance(text.bytes);
PathPaser = new AssetBundlePathPaser(Manifest.AssetMap);
}
IEnumerator PrepareTask(System.Action finishCallback, System.Action loadFailCallback, bool onlineUpdate = false)
{
bool err = false;
bool hasTempCopy = false;
NetworkReachability netState = Application.internetReachability;
bool isGameReadyToComplete = PlayerPrefs.GetInt("GameReadyToComplete", 0) == 1;
_progress.CurrentState = ProgressState.Init;
CustomAssetBundleManifest tempManifest = null;
CustomAssetBundleManifest localManifest = null;
CustomAssetBundleManifest serverManifest = null;
#region prepare manifest file
string scenePath = System.IO.Path.Combine(AssetBundleConfig.PersistentDataPath, "Scene.unity3d").Replace("\\", "/");
string tempManifestPath = System.IO.Path.Combine(AssetBundleConfig.PersistentDataPathTemp, AssetBundleConfig.ManifestRelativePath).Replace("\\", "/");
string localManifestPath = System.IO.Path.Combine(AssetBundleConfig.PersistentDataPath, AssetBundleConfig.ManifestRelativePath).Replace("\\", "/");
string serverManifestPath = System.IO.Path.Combine(AssetBundleConfig.ServerAssetsPath, AssetBundleConfig.ManifestRelativePath).Replace("\\", "/");
#region 获取默认的manifest,PersistentDataPath/Temp
//temp manifest--- a copy of manifest in streamassets
if (!File.Exists(tempManifestPath) || !isGameReadyToComplete)
{
Debug.Log("temp copy of manifest");
yield return(StartCoroutine(Helpers.PathUtil.CopyFileFromAppPathAsync(AssetBundleConfig.ManifestRelativePath, AssetBundleConfig.StreamingAssetsPath, AssetBundleConfig.PersistentDataPathTemp)));
}
if (!File.Exists(tempManifestPath))
{
yield return(null);
}
TextAsset tempTextAsset = LoadLocalAsset <TextAsset>(tempManifestPath, AssetBundleConfig.ManifestName);
if (tempTextAsset != null)
{
Debug.Log("has temp copy");
hasTempCopy = true;
tempManifest = CustomAssetBundleManifest.CreateInstance(tempTextAsset.bytes);
}
#endregion
#region 获取本地manifest,PersistentDataPath
//local manifest
if (System.IO.File.Exists(localManifestPath) && isGameReadyToComplete)
{
Debug.Log("have localmanifest");
tempTextAsset = LoadLocalAsset <TextAsset>(localManifestPath, AssetBundleConfig.ManifestName);
localManifest = CustomAssetBundleManifest.CreateInstance(tempTextAsset.bytes);
}
#endregion
#region 获取资源服务器manifest,ServerPath
//server manifest
if (netState != NetworkReachability.NotReachable && onlineUpdate)
{
PlayerPrefs.SetInt("GameReadyToComplete", 0);
yield return(null);
string sourcePath = Path.Combine(AssetBundleConfig.ServerAssetsPath, AssetBundleConfig.ManifestRelativePath).Replace("\\", "/");
using (UnityWebRequest www = UnityWebRequest.Get(sourcePath))
{
//www.timeout = 30;//设置超时，www.SendWebRequest()连接超时会返回，且isNetworkError为true
yield return(www.SendWebRequest());
if (www.isNetworkError)
{
Debug.Log("Download Error:" + www.error);
err = true;
}
else //if (www.responseCode == 200)//200表示接受成功
{
Debug.Log("Download no error");
byte[] bytes = www.downloadHandler.data;
Helpers.PathUtil.CopyBufferToFile(bytes, localManifestPath);
var ab = AssetBundle.LoadFromMemory(bytes);
var tx = ab.LoadAsset <TextAsset>(AssetBundleConfig.ManifestName);
serverManifest = CustomAssetBundleManifest.CreateInstance(tx.bytes);
ab.Unload(true);
}
}
}
#endregion
#region 非网络状态检查本地manifest
if (err || netState == NetworkReachability.NotReachable || !onlineUpdate)
{
err = false;
if (localManifest != null && isGameReadyToComplete) //包含完整本地资源
{
}
else if (localManifest == null && hasTempCopy) //包含默认资源
{
Debug.Log("包含默认资源");
Helpers.PathUtil.CopyFile(tempManifestPath, localManifestPath);
}
else //没有任何资源
{
//throw new Exception("not contain default resources");
err = true;
}
}
#endregion
#endregion
if (err)
{
loadFailCallback();
}
else
{
bool IsCompressed = true;
List <string> needLoadFromServer = new List <string>();
List <string> needLoadFromDefault = new List <string>();
if (serverManifest != null)
{
IsCompressed = serverManifest.IsCompressed;
if (!isGameReadyToComplete && localManifest != null)//上次更新资源没有完全准备好
{
localManifest.AssetMap.Clear();
}
List <string> loadFromServer = CustomAssetBundleManifest.GetDifference(localManifest, serverManifest);
List <string> canLoadFromDefault = CustomAssetBundleManifest.GetSame(tempManifest, serverManifest);
foreach (var item in loadFromServer)
{
if (canLoadFromDefault.Contains(item))
{
needLoadFromDefault.Add(item);
}
else
{
Debug.Log("needloadfromserver:" + item);
needLoadFromServer.Add(item);
}
}
}
else if (localManifest == null && hasTempCopy)
{
IsCompressed = tempManifest.IsCompressed;
List <string> loadFromDefault = new List <string>();
using (var itr = tempManifest.AssetMap.GetEnumerator())
{
while (itr.MoveNext())
{
loadFromDefault.Add(itr.Current.Key);
}
}
needLoadFromDefault = loadFromDefault;
}
else if (localManifest != null && hasTempCopy)
{
IsCompressed = tempManifest.IsCompressed;
needLoadFromDefault = GetLocalWithDefaultDifference(localManifest, tempManifest);
Debug.Log("PathHelper.CopyFile");
Helpers.PathUtil.CopyFile(tempManifestPath, localManifestPath);
}
_progress.CurrentStep = 0;
_progress.AllStepCount = needLoadFromDefault.Count + needLoadFromServer.Count;
Debug.Log("allstepcount:" + _progress.AllStepCount + needLoadFromDefault.Count + needLoadFromServer.Count);
if (serverManifest != null)
{
yield return(StartCoroutine(DownloadAssetBundle(needLoadFromServer, AssetBundleConfig.ServerAssetsPath, AssetBundleConfig.PersistentDataPath, IsCompressed)));
}
yield return(StartCoroutine(CopyAssetBundle(needLoadFromDefault, AssetBundleConfig.PersistentDataPath, IsCompressed)));
_progress.CurrentState = ProgressState.Done;
Helpers.PathUtil.DeleteDir(AssetBundleConfig.PersistentDataPathTemp);
PlayerPrefs.SetInt("GameReadyToComplete", 1);
yield return(null);
if (finishCallback != null)
{
finishCallback();
}
Destroy(gameObject);
}
}