/// <summary>
/// 异步资源加载，外部直接调用，仅加载不需要实例化的资源，例如Texture,音频等等
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public void LoadAsset(string path, OnAssetLoadComplete complete)
{
if (m_EditorResource)
{
LoadAssetFromEditor(path, complete);
}
else
{
//LoadAssetFromAssetBundle(path, complete);
AssetLoadAsyncOp op = ReferencePool.Acquire <AssetLoadAsyncOp>();
op.Path = path;
op.CompleteAction = complete;
waitingList.Add(op);
}
}
/// <summary>
/// 缓存太多，清除最早没有使用的资源
/// </summary>
//protected void WashOut()
//{
// //当大于缓存个数时，进行一半释放
// Debug.Log("washout " + m_NoRefrenceAssetMapList.Size() + " " + m_MaxCacheCount);
// while (m_NoRefrenceAssetMapList.Size() >= m_MaxCacheCount)
// {
// for (int i = 0; i < m_MaxCacheCount / 2; i++)
// {
// AssetItem item = m_NoRefrenceAssetMapList.Back();
// DestoryAssetItem(item, true);
// }
// }
//}
public void OnUpdate(float elapseSeconds, float realElapseSeconds)
{
m_AssetBundleManager.OnUpdate(elapseSeconds, realElapseSeconds);
if (loadingList.Count > 0)
{
AssetLoadAsyncOp op = loadingList[0];
if (op.isLoading == true)
{
if (op.Oper.isDone)
{
AssetItem item = ReferencePool.Acquire <AssetItem>();
item.Asset = op.Oper.asset;
CacheAsset(op.Path, item);
if (op.CompleteAction != null)
{
op.CompleteAction(op.Path, op.Oper.asset);
}
loadingList.RemoveAt(0);
ReferencePool.Release(op);
}
}
else
{
op.isLoading = true;
//Debug.Log("load asset " + op.AssetName + " " + op.AssetBundle);
op.Oper = op.AssetBundle.LoadAssetAsync(op.AssetName);
}
}
else
{
if (waitingList.Count > 0)
{
AssetLoadAsyncOp op = waitingList[0];
LoadAssetFromAssetBundle(op.Path, op.CompleteAction);
waitingList.RemoveAt(0);
}
}
}
/// <summary>
/// 从AssetBundle读取资源
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
private void LoadAssetFromAssetBundle(string path, OnAssetLoadComplete complete)
{
if (string.IsNullOrEmpty(path))
{
if (complete != null)
{
complete(path, null);
}
return;
}
uint crc = Crc32.GetCrc32(path);
AssetItem item = GetCacheAssetItem(crc);
if (item != null && item.Asset != null)
{
if (complete != null)
{
complete(path, item.Asset);
}
return;
}
ConfigItem configItem = m_AssetBundleManager.LoadConfigItem(crc);
AssetBundle bundle = m_AssetBundleManager.LoadAssetBundle(crc);
if (bundle != null)
{
//bundle.LoadAssetAsync(configItem.AssetName);
AssetLoadAsyncOp op = ReferencePool.Acquire <AssetLoadAsyncOp>();
op.AssetBundle = bundle;
op.CompleteAction = complete;
op.isLoading = false;
op.Oper = null;
op.Path = path;
op.AssetName = configItem.AssetName;
loadingList.Add(op);
}
}
