private IEnumerator LoadManifest_Async(string rManifrestUrl)
{
isManifestLoadCompleted = false;
WWW www = WWWAssist.Load(rManifrestUrl);
yield return(www);
if (!string.IsNullOrEmpty(www.error))
{
isManifestLoadCompleted = true;
yield break;
}
this.manifest = www.assetBundle.LoadAsset("AssetBundleManifest") as AssetBundleManifest;
WWWAssist.Destroy(ref www);
string[] rALLAB = this.manifest.GetAllAssetBundles();
assetLoadInfos = new Dict <string, AssetLoadInfo>();
for (int i = 0; i < rALLAB.Length; i++)
{
// 开始构建AssetLoadInfo
AssetLoadInfo rAssetLoadInfo = new AssetLoadInfo();
rAssetLoadInfo.abPath = rALLAB[i];
rAssetLoadInfo.abName = rALLAB[i];
string[] rDependABs = this.manifest.GetDirectDependencies(rALLAB[i]);
rAssetLoadInfo.abDependNames = rDependABs;
rAssetLoadInfo.isLoading = false;
rAssetLoadInfo.isLoadCompleted = false;
rAssetLoadInfo.cacheAsset = null;
rAssetLoadInfo.refCount = 0;
assetLoadInfos.Add(rAssetLoadInfo.abName, rAssetLoadInfo);
}
isManifestLoadCompleted = true;
}
private IEnumerator LoadAsset_Async(LoaderRequest rRequest)
{
// 确认Manifest已经加载完成
while (!isManifestLoadCompleted)
{
yield return(0);
}
AssetLoadInfo rAssetLoadInfo = null;
if (!assetLoadInfos.TryGetValue(rRequest.path, out rAssetLoadInfo))
{
Debug.LogErrorFormat("找不到该资源 -- {0}", rRequest.path);
rRequest.asset = null;
yield break;
}
// 确认该资源是否已经加载完成或者正在被加载
while (rAssetLoadInfo.isLoading && !rAssetLoadInfo.isLoadCompleted)
{
yield return(0);
}
//引用计数加1
rAssetLoadInfo.refCount++;
// 如果该资源加载完成了
if (!rAssetLoadInfo.isLoading && rAssetLoadInfo.isLoadCompleted)
{
if (!string.IsNullOrEmpty(rRequest.assetName))
{
AssetBundleRequest rABRequest = rAssetLoadInfo.cacheAsset.LoadAssetAsync(rRequest.assetName);
yield return(rABRequest);
rRequest.asset = rABRequest.asset;
}
yield break;
}
// 开始加载资源依赖项
if (rAssetLoadInfo.abDependNames != null)
{
for (int i = rAssetLoadInfo.abDependNames.Length - 1; i >= 0; i--)
{
string rDependABPath = rAssetLoadInfo.abDependNames[i];
string rDependABName = rDependABPath;
LoaderRequest rDependAssetRequest = new LoaderRequest(rDependABName, "", false);
rDependAssetRequest.Start(LoadAsset_Async(rDependAssetRequest));
yield return(rDependAssetRequest.Coroutine);
}
}
//开始加载当前的资源包
rAssetLoadInfo.isLoading = true;
rAssetLoadInfo.isLoadCompleted = false;
string rAssetLoadUrl = AssetPlatformManager.Instance.GetStreamingUrl_CurPlatform(rAssetLoadInfo.abPath);
WWW www = new WWW(rAssetLoadUrl);
yield return(www);
// 如果是一个直接的资源，将资源的对象取出来
rAssetLoadInfo.cacheAsset = www.assetBundle;
WWWAssist.Destroy(ref www);
// 加载Object
if (!string.IsNullOrEmpty(rRequest.assetName))
{
if (!rRequest.isScene)
{
AssetBundleRequest rABRequest = rAssetLoadInfo.cacheAsset.LoadAssetAsync(rRequest.assetName);
yield return(rABRequest);
rRequest.asset = rABRequest.asset;
}
else
{
rAssetLoadInfo.cacheAsset.GetAllScenePaths();
}
}
rAssetLoadInfo.isLoading = false;
rAssetLoadInfo.isLoadCompleted = true;
}