unity 资源加载框架 《六》 引用计数的使用5_unity assetbundle引用计数

引用计数的使用5

public class AssetBundleRes : Res
	{
		public AssetBundle AssetBundle
		{
			get { return Asset as AssetBundle; }
			set { Asset = value; }
		}

		private string mAssetPath;

		public AssetBundleRes(string assetPath)
		{
			mAssetPath = assetPath;

			Name = assetPath;
		}

		public override bool LoadSync()
		{
			return AssetBundle = AssetBundle.LoadFromFile(mAssetPath);
		}

		public override void LoadAsync(Action<Res> onLoaded)
		{
			var resRequest = AssetBundle.LoadFromFileAsync(mAssetPath);

			resRequest.completed += operation =>
			{
				AssetBundle = resRequest.assetBundle;

				onLoaded(this);
			};
		}

		protected override void OnReleaseRes()
		{
			if (AssetBundle != null)
			{
				AssetBundle.Unload(true);
				AssetBundle = null;
			}

			ResMgr.Instance.SharedLoadedReses.Remove(this);
		}
	}
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