/// <summary>
/// 加载场景
/// TODO 这里没有再进行加载队列个数的判定，所以可能会超过最大加载数的限制
/// </summary>
/// <returns>The level async.</returns>
/// <param name="assetBundleName">Asset bundle name.</param>
/// <param name="levelName">Level name.</param>
/// <param name="isAdditive">If set to <c>true</c> is additive.</param>
public AssetBundleOperation LoadSceneAsync(string scopeName, string assetBundleName, string levelName, bool isAdditive, Action <string> callBack, string variants = "")
{
AssetBundleOperation operation = null;
#if UNITY_EDITOR
if (SimulateAssetBundleInEditor)
{
assetBundleName = this.GetVariants(assetBundleName, variants);
// 存储到字典中
if (dictScope.ContainsKey(scopeName) == false)
{
dictScope.Add(scopeName, new List <string>());
}
dictScope[scopeName].Add(assetBundleName);
operation = new AssetBundleLoadSceneSimulationOperation(assetBundleName, levelName, isAdditive, callBack);
if (callBack != null)
{
StartCoroutine(operation);
}
}
else
#endif
{
// 回调函数的基础
Action <string, string, Action <string> > baseCallBack = (string ScopeName, string AssetBundleName, Action <string> CallBack) => {
// 存储到字典中
if (dictScope.ContainsKey(ScopeName) == false)
{
dictScope.Add(ScopeName, new List <string>());
}
dictScope[ScopeName].Add(AssetBundleName);
if (CallBack != null)
{
CallBack(AssetBundleName);
}
};
this.LoadAssetBundle(scopeName, assetBundleName, variants);
string variantsName = this.GetVariants(assetBundleName, variants);
operation = new AssetBundleLoadSceneOperation(scopeName, variantsName, levelName, isAdditive, callBack, baseCallBack);
this.inProgressOperations.Add(operation);
if (callBack != null)
{
StartCoroutine(operation);
}
}
return(operation);
}
void Update()
{
#if UNITY_EDITOR
if (SimulateAssetBundleInEditor)
{
return;
}
#endif
if (dicLoadings == null || dicLoadings.Count == 0)
{
return;
}
// Collect all the finished WWWs.
List <string> keysToRemove = new List <string>();
foreach (var keyValue in this.dicLoadings)
{
AssetBundleCreateRequest request = keyValue.Value;
// isDone也有可能在系统错误的时候返回
if (request.isDone)
{
AssetBundle bundle = request.assetBundle;
if (bundle == null)
{
Debug.LogError(string.Format("Failed load bundle {0} : bundle is null", keyValue.Key));
keysToRemove.Add(keyValue.Key);
if (this.abRefCntLoadingDic.ContainsKey(keyValue.Key))
{
this.abRefCntLoadingDic[keyValue.Key]--;
if (this.abRefCntLoadingDic[keyValue.Key] == 0)
{
this.abRefCntLoadingDic.Remove(keyValue.Key);
}
}
continue;
}
int rCount = 1;
if (this.abRefCntLoadingDic.ContainsKey(keyValue.Key))
{
rCount = this.abRefCntLoadingDic[keyValue.Key];
this.abRefCntLoadingDic.Remove(keyValue.Key);
}
AssetBundleRef abr = new AssetBundleRef(keyValue.Key, bundle);
abr.m_ReferencedCount = rCount;
dictAssetBundleRefs.Add(keyValue.Key, abr);
keysToRemove.Add(keyValue.Key);
}
}
// Remove the finished WWWs.
foreach (var key in keysToRemove)
{
AssetBundleCreateRequest request = this.dicLoadings[key];
this.dicLoadings.Remove(key);
request = null;
}
// Update all in progress operations
for (int i = 0; i < inProgressOperations.Count;)
{
AssetBundleOperation operation = inProgressOperations[i];
if (!operation.Update())
{
inProgressOperations.RemoveAt(i);
}
else
{
i++;
}
}
// 可以继续加载
while (this.downList.Count > 0 && (this.dicLoadings.Count <= this._maxSize))
{
LoadTask task = this.downList[0];
this.LoadAssetAsync(task.scope, task.name, task.variants, task.callBack, task.baseCallBack);
this.downList.RemoveAt(0);
}
}