Add progress of async operation

异步操作类增加进度查询。

Assets/YooAsset/Runtime/AssetSystem/Operations/RawFileOperation.cs

@@ -195,6 +195,7 @@ namespace YooAsset
 			// 3. 检测APK拷贝文件结果
 			if (_steps == ESteps.CheckDownloadFromApk)
 			{
+				Progress = _fileRequester.Progress();
 				if (_fileRequester.IsDone() == false)
 					return;
 
@@ -336,6 +337,7 @@ namespace YooAsset
 			// 3. 检测服务器下载结果
 			if (_steps == ESteps.CheckDownloadFromWeb)
 			{
+				Progress = _downloader.DownloadProgress;
 				if (_downloader.IsDone() == false)
 					return;
 
@@ -363,6 +365,7 @@ namespace YooAsset
 			// 5. 检测APK拷贝文件结果
 			if (_steps == ESteps.CheckDownloadFromApk)
 			{
+				Progress = _fileRequester.Progress();
 				if (_fileRequester.IsDone() == false)
 					return;
 

Assets/YooAsset/Runtime/AssetSystem/Operations/UnloadSceneOperation.cs

@@ -26,19 +26,6 @@ namespace YooAsset
 		private Scene _scene;
 		private AsyncOperation _asyncOp;
 
-		/// <summary>
-		/// 场景卸载进度
-		/// </summary>
-		public float Progress
-		{
-			get
-			{
-				if (_asyncOp == null)
-					return 0;
-				return _asyncOp.progress;
-			}
-		}
-
 		internal UnloadSceneOperation(string error)
 		{
 			_flag = EFlag.Error;
@@ -87,6 +74,7 @@ namespace YooAsset
 
 			if (_steps == ESteps.Checking)
 			{
+				Progress = _asyncOp.progress;
 				if (_asyncOp.isDone == false)
 					return;