/// <summary>
/// 加载下一个，如果没有下一个，则完成本次队列加载
/// </summary>
/// <returns></returns>
private bool LoadNext()
{
if (_currLoadIndex < _loaders.Count)
{
currLoader = _loaders[_urls[_currLoadIndex]];
if (cacheMemory || !currLoader.urlLoader.HasNewVersion()) //需要缓存内存或者还没有加载
{
currLoader.urlLoader.onLoadComplete.AddEventListener(OnOneLoadCompleteHandler);
currLoader.urlLoader.onLoadError.AddEventListener(OnOneLoadErrorHandler);
FrameCall.DelayFrame(() =>//留一帧时间缓冲
{
currLoader.urlLoader.Load();
});
}
else
{
OnOneLoadCompleteHandler(currLoader.urlLoader);
}
return(true);
}
else
{
isLoading = false;
onCompleteSignal.Dispatch(this);
return(false);
}
}
/// <summary>
/// 某一个加载出错，如果在重试次数之内，则重新再次加载，否则抛出队列加载出错事件，终止本次加载（除非IgnoreError）
/// </summary>
/// <param name="obj"></param>
private void OnOneLoadErrorHandler(ILoader obj)
{
if (currLoader.currRetry < currLoader.maxRetry)
{
currLoader.currRetry++;
LoadNext();
}
else if (ignoreError)
{
if (!cacheMemory)
{
_loaders[_urls[_currLoadIndex]] = null;
}
if (_progressFrameCall != null)
{
_progressFrameCall.Run();
}
_progressFrameCall = null;
_currLoadIndex++;
LoadNext();
}
else
{
OnOneEndHandler(obj);
isLoading = false;
onErrorSignal.Dispatch(this);
}
}
/// <summary>
/// 某一个加载完成，尝试加载下一个资源
/// </summary>
/// <param name="obj"></param>
private void OnOneLoadCompleteHandler(ILoader obj)
{
if (!cacheMemory)
{
_loaders[_urls[_currLoadIndex]] = null;
}
if (_progressFrameCall != null)
{
_progressFrameCall.Run();
}
_progressFrameCall = null;
OnOneEndHandler(obj);
_currLoadIndex++;
LoadNext();
}
/// <summary>
/// 开始对add的资源进行加载
/// </summary>
public void Load()
{
isLoading = true;
bool hasNext = LoadNext();
if (hasNext)
{
_progressInOne = 1f / _loaders.Count;
if (_progressFrameCall != null)
{
_progressFrameCall.Run();
}
_progressFrameCall = FrameCall.Call(ScheduleUpdate);
}
else
{
onTotalScheduleSignal.Dispatch(1);
}
}
