private IEnumerator LoadAsset_Async(AssetLoaderRequest rRequest)
{
ABLoadEntry rAssetLoadEntry = null;
if (!ABLoaderVersion.Instance.TryGetValue(rRequest.Path, out rAssetLoadEntry))
{
Debug.LogErrorFormat("Can not find assetbundle: -- {0}", rRequest.Path);
rRequest.Asset = null;
rRequest.SetResult(rRequest);
yield break;
}
//引用计数加1
rAssetLoadEntry.RefCount++;
// 确认未加载完成并且正在被加载、一直等待其加载完成
while (rAssetLoadEntry.IsLoading && !rAssetLoadEntry.IsLoadCompleted)
{
yield return(new WaitForEndOfFrame());
}
// 如果该资源加载完成了
if (!rAssetLoadEntry.IsLoading && rAssetLoadEntry.IsLoadCompleted)
{
// 从缓存的Assetbundle里面加载资源
yield return(LoadAssetObject(rRequest, rAssetLoadEntry, false));
rRequest.SetResult(rRequest);
yield break;
}
// 开始加载资源依赖项
if (rAssetLoadEntry.ABDependNames != null && !rRequest.IsSimulate)
{
for (int i = rAssetLoadEntry.ABDependNames.Length - 1; i >= 0; i--)
{
string rDependABPath = rAssetLoadEntry.ABDependNames[i];
string rDependABName = rDependABPath;
var rDependAssetRequest = new AssetLoaderRequest(rDependABName, "", false, rRequest.IsSimulate, false);
yield return(LoadAsset_Async(rDependAssetRequest));
}
}
//开始加载当前的资源包
rAssetLoadEntry.IsLoading = true;
rAssetLoadEntry.IsLoadCompleted = false;
// 真正的从AB包里面加载资源
yield return(LoadAssetObject(rRequest, rAssetLoadEntry, true));
rRequest.SetResult(rRequest);
rAssetLoadEntry.IsLoading = false;
rAssetLoadEntry.IsLoadCompleted = true;
}
private IEnumerator LoadAssetAsync(AssetLoaderRequest rRequest)
{
this.mIsLoadingRefCount++;
ABLoadEntry rAssetLoadEntry = null;
if (!rRequest.IsSimulate)
{
if (!ABLoaderVersion.Instance.TryGetValue(rRequest.Path, out rAssetLoadEntry))
{
Debug.LogErrorFormat("---Can not find assetbundle: -- {0}", rRequest.Path);
rRequest.Asset = null;
this.mIsLoadingRefCount--;
rRequest.SetResult(rRequest);
yield break;
}
}
else
{
rAssetLoadEntry = new ABLoadEntry()
{
ABName = rRequest.Path,
ABPath = ABLoaderVersion.Instance.GetABPath_With_Space(LoaderSpace.Streaming, rRequest.Path),
ABDependNames = new string[0],
};
}
// 得到该资源的所有依赖项
var rABAllDependenceEntries = this.GetABEntryAllDependencies(rAssetLoadEntry);
this.mTempEntries.Clear();
for (int i = 0; i < rABAllDependenceEntries.Count; i++)
{
rABAllDependenceEntries[i].RefCount++;
if (!this.mTempEntries.Contains(rABAllDependenceEntries[i]))
{
this.mTempEntries.Add(rABAllDependenceEntries[i]);
}
}
for (int i = 0; i < this.mTempEntries.Count; i++)
{
// 构建依赖项的Request
var rItem = this.mTempEntries[i];
var rDependenceLoaderRequest = new AssetLoaderRequest(
rItem.ABPath, string.Empty, true, rRequest.IsSimulate, rRequest.IsLoadAllAssets);
yield return(this.LoadAssetAsync_OneEntry(rDependenceLoaderRequest, rItem));
}
yield return(this.LoadAssetAsync_OneEntry(rRequest, rABAllDependenceEntries[rABAllDependenceEntries.Count - 1]));
this.mIsLoadingRefCount--;
rRequest.SetResult(rRequest);
}