/// <summary>
/// 依据name加载Assetbundle文件，并使用对象池存储AssetBundleItem
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private AssetBundle LoadAssetBundle(string name)
{
AssetBundleItem item = null;
uint crc = CRC32.GetCRC32(name);
if (!m_AssetBundleItemDic.TryGetValue(crc, out item))
{
string fullPath = Application.streamingAssetsPath + "/" + name;
AssetBundle assetBundle = null;
if (File.Exists(fullPath))
{
assetBundle = AssetBundle.LoadFromFile(fullPath);
}
if (assetBundle == null)
{
Debug.Log("Load AssetBundle Error assetbundle is null:" + fullPath);
}
item = m_AssetBundleItemPool.Spawn(true);
item.AssetBundle = assetBundle;
m_AssetBundleItemDic.Add(crc, item);
}
item.RefCount++;
return(item.AssetBundle);
}
/// <summary>
/// 通过crc释放ab包,并通过对象池回收assetbundleitem资源
/// </summary>
/// <param name="name"></param>
private void UnLoadAssetBundle(string name)
{
AssetBundleItem item = null;
uint crc = CRC32.GetCRC32(name);
if (m_AssetBundleItemDic.TryGetValue(crc, out item) && item != null)
{
item.RefCount--;
if (item.RefCount <= 0 && item.AssetBundle != null)
{
item.AssetBundle.Unload(true);
item.Reset();
m_AssetBundleItemPool.Recycle(item);
m_AssetBundleItemDic.Remove(crc);
}
}
}
