/// <summary>
/// 检查是否已在缓存
/// </summary>
/// <param name="group">加载组</param>
/// <param name="name">AssetBundle名称</param>
/// <param name="onLoaded">完成回调</param>
/// <param name="persistent">是否常驻</param>
/// <param name="async">是否异步</param>
/// <returns>已缓存(是-引用计数+1,并返回true, 否-返回false)</returns>
public bool CheckAssetBundleInfo(LoaderGroup group, string name, LoadMgr.GroupLoadedCallback onLoaded,
bool persistent, bool async)
{
AssetBundleInfo info = GetAssetBundleInfo(name, persistent);
if (info == null)
{
AddAssetBundleInfo(name, persistent);
return(false);
}
if (info.Bundle == null)
{
return(false);
}
if (onLoaded != null)
{
if (!async)
{
onLoaded(group, info);
}
else
{
m_task.AddAsyncCallback(onLoaded, group, info);
}
}
return(true);
}
// 加载AssetBundle(先从persistentData读,没有找到则从streamingAssets读,带后缀)
private void LoadAssetBundle(LoaderGroup group, string path, GroupLoadedCallback onLoaded,
bool async = true, bool persistent = false, bool manifest = true,
LoadPriority priority = LoadPriority.Normal)
{
path = path.ToLower();
if (async && group == null)
{
group = m_task.PopGroup(priority);
}
if (manifest)
{
if (!HasBundle(path))
{
// Manifest里没有这个AssetBundle,说明是一个错误的路径
Logger.LogError(string.Format("ab不存在:{0}", path));
if (onLoaded != null)
{
if (!async)
{
onLoaded(group, null);
}
else
{
m_task.AddAsyncCallback(onLoaded, group, null);
}
}
return;
}
// 加载依赖
LoadDependencies(group, path, async, persistent);
}
// 检查是否有缓存
if (m_cache.CheckAssetBundleInfo(group, path, onLoaded, persistent, async))
{
return;
}
// 添加加载任务
m_task.AddLoadTask(group, Loader.LoaderType.Bundle, path, null, (group1, data) => {
AssetBundle ab = data as AssetBundle;
AssetBundleInfo info = null;
if (ab != null)
{
info = m_cache.SetAssetBundle(path, ab);
#if UNITY_EDITOR
RefreshShader(ab);
#endif
}
// 加载回调
if (onLoaded != null)
{
onLoaded(group1, info);
}
}, async, priority);
}