/// <summary>
/// 加载单个assetbundle根据名字
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private static AssetBundle _LoadAssetBundle(string name)
{
AssetBundleItem abItem = mAssetBundleItemDic.GetValue(name);
if (abItem == null)
{
AssetBundle assetBundle = null;
string fullPath = mABLoadPath + name;
if (File.Exists(fullPath))
{
assetBundle = AssetBundle.LoadFromFile(fullPath);// ---正式的加载
}
if (assetBundle == null)
{
Debug.LogError("加载AB包失败:" + fullPath);
return(null);
}
abItem = Z.Pool.Take <AssetBundleItem>();
abItem.AssetBundle = assetBundle;
mAssetBundleItemDic.Add(name, abItem);
}
abItem.RefCount++;
return(abItem.AssetBundle);
}
/// <summary>
/// 释放AB包
/// </summary>
/// <param name="name">包名</param>
private static void _ReleaseAssetBundle(string name)
{
AssetBundleItem abItem = mAssetBundleItemDic.GetValue(name);
if (abItem != null)
{
//减少引用计数
abItem.RefCount--;
if (abItem.RefCount <= 0)
{
if (abItem.AssetBundle == null)//不太可能发生...
{
Z.Debug.Warning("准备卸载AB包时，发现壳内的包引用为空");
}
abItem.AssetBundle.Unload(true);//这个卸载Unity做的很智能 会把所有引用这个assetBundle的变量都置空，不知道怎么做的...
Z.Pool.Return(ref abItem);
mAssetBundleItemDic.Remove(name);
}
}
}
private static IEnumerator _LoadAssetBundleAsync(string abName, ResourceItem resItem)
{
AssetBundleItem abItem = mAssetBundleItemDic.GetValue(abName);
if (abItem == null)
{
AssetBundleCreateRequest abRequest = null;
string fullPath = mABLoadPath + abName;
if (File.Exists(fullPath))
{
abRequest = AssetBundle.LoadFromFileAsync(fullPath); // ---正式的加载
}
while (!abRequest.isDone) //等待加载完成
{
yield return(null);
}
if (abRequest.assetBundle == null)
{
Debug.LogError("加载AB包失败:" + fullPath);
}
else
{
if (ReferenceEquals(abName, resItem.ABName))
{
resItem.AssetBundle = abRequest.assetBundle;
}
abItem = Z.Pool.Take <AssetBundleItem>();
abItem.AssetBundle = abRequest.assetBundle;
mAssetBundleItemDic.Add(abName, abItem); //协程是在主线程等待 因此这个操作并不需要加锁 ...又一次体现了协程的优越性
}
}
abItem.RefCount++;
//发送加载完成事件 接收方过滤name即可
Z.Subject.Fire(Z.Pool.Take <ABLoadedSArgs>().Fill(resItem, abName));
}
//static AssetBundleItem()
//{
// Z.Pool.RegisterClassCustomPool<AssetBundleItem>(() => new AssetBundleItem(), Clean, 100);
//}
internal static void Clean(AssetBundleItem item)
{
item.AssetBundle = null;
item.RefCount = 0;
}
