From 608f401a8077a58a94cff0958a47b650bf5a3df3 Mon Sep 17 00:00:00 2001
From: hevinci <hevinci@hotmail.com>
Date: Tue, 11 Oct 2022 18:09:54 +0800
Subject: [PATCH] Update Operation System
MIME-Version: 1.0
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增加异步操作取消方法
---
 .../AssetSystem/Operations/InstantiateOperation.cs    | 11 ++++++++++-
 .../Runtime/OperationSystem/AsyncOperationBase.cs     |  8 ++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/Assets/YooAsset/Runtime/AssetSystem/Operations/InstantiateOperation.cs b/Assets/YooAsset/Runtime/AssetSystem/Operations/InstantiateOperation.cs
index 1241982..19bff32 100644
--- a/Assets/YooAsset/Runtime/AssetSystem/Operations/InstantiateOperation.cs
+++ b/Assets/YooAsset/Runtime/AssetSystem/Operations/InstantiateOperation.cs
@@ -62,7 +62,7 @@ namespace YooAsset
 					return;
 				}
 
-				if(_setPositionRotation)
+				if (_setPositionRotation)
 				{
 					if (_parent == null)
 						Result = Object.Instantiate(_handle.AssetObject as GameObject, _position, _rotation);
@@ -81,5 +81,14 @@ namespace YooAsset
 				Status = EOperationStatus.Succeed;
 			}
 		}
+		public override void Cancel()
+		{
+			if (IsDone == false)
+			{
+				_steps = ESteps.Done;
+				Status = EOperationStatus.Failed;
+				Error = $"User cancelled !";
+			}
+		}
 	}
 }
\ No newline at end of file
diff --git a/Assets/YooAsset/Runtime/OperationSystem/AsyncOperationBase.cs b/Assets/YooAsset/Runtime/OperationSystem/AsyncOperationBase.cs
index f2cbed6..0730ed8 100644
--- a/Assets/YooAsset/Runtime/OperationSystem/AsyncOperationBase.cs
+++ b/Assets/YooAsset/Runtime/OperationSystem/AsyncOperationBase.cs
@@ -81,6 +81,14 @@ namespace YooAsset
 				_taskCompletionSource.TrySetResult(null);
 		}
 
+		/// <summary>
+		/// 取消异步操作
+		/// </summary>
+		public virtual void Cancel()
+		{
+			throw new NotImplementedException("Can not cancel operation !");
+		}
+
 		#region 异步编程相关
 		bool IEnumerator.MoveNext()
 		{