public void AsyncLoadResource(string path, OnLoadResFinish dealFinish, LoadResPriority priority,
object param1 = null, object param2 = null, object param3 = null, uint crc = 0)
{
if (crc == 0)
{
crc = Crc32.GetCrc32(path);
}
ResourceItem item = GetCacheResourceItem(crc);
if (item != null)
{
if (dealFinish != null)
{
dealFinish(path, item.m_Obj, param1, param2, param3);
}
return;
}
//判断是否在加载中
AsyncLoadResInfo para = null;
if (!m_LoadingAssetDic.TryGetValue(crc, out para) || para == null)
{
para = m_AsyncLoadResParamPool.Spawn();
para.m_Crc = crc;
para.m_Path = path;
para.m_Priority = priority;
m_LoadingAssetDic.Add(crc, para);
m_LoadingAssetList[(int)priority].Add(para);
}
//往回调列表里面加回调
AsyncLoadResCallBackInfo callBack = m_AsyncCallBackPool.Spawn();
callBack.m_DealFinish = dealFinish;
callBack.m_Param1 = param1;
callBack.m_Param2 = param2;
callBack.m_Param3 = param3;
para.m_CallBackList.Add(callBack);
}
//异步加载协程
IEnumerator AsyncLoadCor()
{
//回调队列
List <AsyncLoadResCallBackInfo> callBackList = null;
long lastYieldTime = System.DateTime.Now.Ticks;
while (true)
{
bool haveYield = false;
//遍历需加载资源队列
for (int i = 0; i < (int)LoadResPriority.RES_NUM; i++)
{
List <AsyncLoadResInfo> loadingList = m_LoadingAssetList[i];
if (loadingList.Count <= 0)
{
continue;
}
AsyncLoadResInfo loadingItem = loadingList[0];
loadingList.RemoveAt(0);
//取出回调
callBackList = loadingItem.m_CallBackList;
Object obj = null;
ResourceItem item = null;
#if UNITY_EDITOR
if (!m_loadFromAssetBundle)
{
obj = LoadAssetByEditor <Object>(loadingItem.m_Path);
//模拟异步加载
yield return(new WaitForSeconds(0.5f));
item = AssetBundleMgr.Instance.GetResourceItem(loadingItem.m_Crc);
}
#endif
if (obj == null)
{
item = AssetBundleMgr.Instance.LoadResourceAssetBundle(loadingItem.m_Crc);
if (item != null && item.m_AssetBundle != null)
{
AssetBundleRequest abRequest = null;
if (loadingItem.isSprite)
{
abRequest = item.m_AssetBundle.LoadAssetAsync <Sprite>(item.m_AssetName);
}
else
{
abRequest = item.m_AssetBundle.LoadAssetAsync(item.m_AssetName);
}
yield return(abRequest);
if (abRequest.isDone)
{
obj = abRequest.asset;
}
lastYieldTime = System.DateTime.Now.Ticks;
}
}
CacheResource(loadingItem.m_Path, ref item, loadingItem.m_Crc, obj, callBackList.Count);
for (int j = 0; j < callBackList.Count; j++)
{
AsyncLoadResCallBackInfo callBack = callBackList[j];
if (callBack != null && callBack.m_DealFinish != null)
{
callBack.m_DealFinish(loadingItem.m_Path, obj, callBack.m_Param1, callBack.m_Param2,
callBack.m_Param3);//执行回调
callBack.m_DealFinish = null;
}
callBack.Reset();
m_AsyncCallBackPool.Recycle(callBack);
}
obj = null;
callBackList.Clear();
m_LoadingAssetDic.Remove(loadingItem.m_Crc);
loadingItem.Reset();
m_AsyncLoadResParamPool.Recycle(loadingItem);
if (System.DateTime.Now.Ticks - lastYieldTime > MAXLOADRESTIME)//大于这个时间等待一帧
{
yield return(null);
lastYieldTime = System.DateTime.Now.Ticks;
haveYield = true;
}
}
if (!haveYield || System.DateTime.Now.Ticks - lastYieldTime > MAXLOADRESTIME)//大于这个时间等待一帧
{
lastYieldTime = System.DateTime.Now.Ticks;
}
yield return(null);
}
}
