/// <summary>
/// 资源回收（卸载引用计数为零的资源）
/// </summary>
public static void UnloadUnusedAssets()
{
if (_simulationOnEditor)
{
for (int i = _providers.Count - 1; i >= 0; i--)
{
if (_providers[i].CanDestroy())
{
_providers[i].Destroy();
_providers.RemoveAt(i);
}
}
}
else
{
for (int i = _loaders.Count - 1; i >= 0; i--)
{
AssetBundleLoaderBase loader = _loaders[i];
loader.TryDestroyAllProviders();
}
for (int i = _loaders.Count - 1; i >= 0; i--)
{
AssetBundleLoaderBase loader = _loaders[i];
if (loader.CanDestroy())
{
loader.Destroy(false);
_loaders.RemoveAt(i);
}
}
}
}
internal static List <AssetBundleLoaderBase> CreateDependAssetBundleLoaders(AssetInfo assetInfo)
{
BundleInfo[] depends = BundleServices.GetAllDependBundleInfos(assetInfo);
List <AssetBundleLoaderBase> result = new List <AssetBundleLoaderBase>(depends.Length);
foreach (var bundleInfo in depends)
{
AssetBundleLoaderBase dependLoader = CreateAssetBundleLoaderInternal(bundleInfo);
result.Add(dependLoader);
}
return(result);
}
private static AssetBundleLoaderBase TryGetAssetBundleLoader(string bundleName)
{
AssetBundleLoaderBase loader = null;
for (int i = 0; i < _loaders.Count; i++)
{
AssetBundleLoaderBase temp = _loaders[i];
if (temp.MainBundleInfo.BundleName.Equals(bundleName))
{
loader = temp;
break;
}
}
return(loader);
}
private static AssetBundleLoaderBase CreateAssetBundleLoaderInternal(BundleInfo bundleInfo)
{
// 如果加载器已经存在
AssetBundleLoaderBase loader = TryGetAssetBundleLoader(bundleInfo.BundleName);
if (loader != null)
{
return(loader);
}
// 新增下载需求
#if UNITY_WEBGL
loader = new AssetBundleWebLoader(bundleInfo);
#else
loader = new AssetBundleFileLoader(bundleInfo);
#endif
_loaders.Add(loader);
return(loader);
}