/// <summary>
/// 根据路径的crc加载中间类ResoucItem
/// </summary>
/// <param name="crc"></param>
/// <returns></returns>
protected internal AssetBundle LoadAssetBundle(uint crc)
{
ConfigItem configItem = null;
if (!m_ConfigItemDic.TryGetValue(crc, out configItem) || configItem == null)
{
Log.Error("LoadResourceAssetBundle error: can not find crc {0} in AssetBundleConfig", crc.ToString());
return(null);
}
AssetBundleItem bundleItem = null;
if (m_AssetBundleItemDic.TryGetValue(crc, out bundleItem))
{
return(bundleItem.AssetBundle);
}
AssetBundle bundle = LoadAssetBundle(configItem.ABName);
if (configItem.DependAssetBundle != null)
{
for (int i = 0; i < configItem.DependAssetBundle.Count; i++)
{
LoadAssetBundle(configItem.DependAssetBundle[i]);
}
}
return(bundle);
}
/// <summary>
/// 加载单个assetbundle根据名字
/// </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))
{
AssetBundle assetBundle = null;
string fullPath = ABLoadPath + name;
assetBundle = AssetBundle.LoadFromFile(fullPath);
if (assetBundle == null)
{
Debug.LogError(" Load AssetBundle Error:" + fullPath);
}
item = ReferencePool.Acquire <AssetBundleItem>();
item.AssetBundle = assetBundle;
item.RefCount++;
m_AssetBundleItemDic.Add(crc, item);
}
else
{
item.RefCount++;
}
return(item.AssetBundle);
}
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)
{
Log.Debug("release " + name);
item.AssetBundle.Unload(true);
ReferencePool.Release(item);
m_AssetBundleItemDic.Remove(crc);
}
}
}