private void UnloadAssetBundleInternal(string variantsName, bool v)
{
AssetBundleRef abr = this.GetAssetBundleRef(variantsName);
if (abr == null)
{
return;
}
abr.m_ReferencedCount--;
if (abr.m_ReferencedCount == 0)
{
abr.assetBundle.Unload(v);
abr.assetBundle = null;
dictAssetBundleRefs.Remove(variantsName);
Debug.Log(variantsName + " has been unloaded successfully");
}
}
/// <summary>
/// 开始真正加载
/// </summary>
/// <returns><c>true</c>, if asset bundle internal was loaded, <c>false</c> otherwise.</returns>
/// <param name="assetBundleName">Asset bundle name.</param>
private bool LoadAssetBundleInternal(string assetBundleName, string variants)
{
// Already loaded.
AssetBundleRef bundle = null;
string variantsName = this.GetVariants(assetBundleName, variants);
// 已经下载
dictAssetBundleRefs.TryGetValue(variantsName, out bundle);
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
// 正在加载
if (dicLoadings.ContainsKey(variantsName))
{
if (this.abRefCntLoadingDic.ContainsKey(variantsName))
{
this.abRefCntLoadingDic[variantsName]++;
}
else
{
this.abRefCntLoadingDic[variantsName] = 2;
}
return(true);
}
// 加载的时候带着variants，但是保存的时候使用assetBundleName
string path = this.FindPath(variantsName);
AssetBundleCreateRequest request = AssetBundle.LoadFromFileAsync(path, 0);
dicLoadings.Add(variantsName, request);
return(false);
}
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);
}
}