update runtime code

重构了OperationSystem的机制。从列表模式修改为链模式

Assets/YooAsset/Runtime/OperationSystem/OperationSystem.cs

@@ -43,8 +43,6 @@ namespace YooAsset
         /// </summary>
         public static void Update()
         {
-            _frameTime = _watch.ElapsedMilliseconds;
-
             // 添加新增的异步操作
             if (_newList.Count > 0)
             {
@@ -67,6 +65,7 @@ namespace YooAsset
             }
 
             // 更新进行中的异步操作
+            _frameTime = _watch.ElapsedMilliseconds;
             for (int i = 0; i < _operations.Count; i++)
             {
                 if (IsBusy)
@@ -76,11 +75,7 @@ namespace YooAsset
                 if (operation.IsFinish)
                     continue;
 
-                if (operation.IsDone == false)
-                    operation.InternalUpdate();
-
-                if (operation.IsDone)
-                    operation.SetFinish();
+                operation.UpdateOperation();
             }
 
             // 移除已经完成的异步操作
@@ -114,7 +109,7 @@ namespace YooAsset
             {
                 if (operation.PackageName == packageName)
                 {
-                    operation.SetAbort();
+                    operation.AbortOperation();
                 }
             }
 
@@ -123,7 +118,7 @@ namespace YooAsset
             {
                 if (operation.PackageName == packageName)
                 {
-                    operation.SetAbort();
+                    operation.AbortOperation();
                 }
             }
         }
@@ -135,7 +130,7 @@ namespace YooAsset
         {
             _newList.Add(operation);
             operation.SetPackageName(packageName);
-            operation.SetStart();
+            operation.StartOperation();
         }
     }
 }