1 files changed, 14 insertions, 4 deletions
diff --git a/Assets/UI_Extension/Scripts/Animation/Tween/TweenModule.cs b/Assets/UI_Extension/Scripts/Animation/Tween/TweenModule.cs
index e42236b..2fd3742 100644
--- a/Assets/UI_Extension/Scripts/Animation/Tween/TweenModule.cs
+++ b/Assets/UI_Extension/Scripts/Animation/Tween/TweenModule.cs
@@ -1,7 +1,9 @@
-using System;
+// by chai
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
+using UnityEngine.UI;
 
 namespace TweenAnimation
 {
@@ -14,8 +16,10 @@ namespace TweenAnimation
 
         public float duration;
 
+        private float m_LastTime;
+
 #if UNITY_EDITOR
-        public new virtual string name { get { return ""; } }
+        public virtual string name { get { return ""; } }
 
         public string description;
 
@@ -25,13 +29,19 @@ namespace TweenAnimation
         public bool unfold;
 #endif
 
+        private bool IsValidTime0(float time0)
+        {
+            return time0 >= 0 && time0 <= duration;
+        }
+
         // 根据当前时间更新值, time的范围是tween animation的duration
         public void OnUpdate(float time)
         {
             float time0 = time - timeOffset;
-            if (time0 < 0 || time0 > duration)
+            if (!IsValidTime0(time0) && !IsValidTime0(duration))
                 return;
-            SetValue(time0); 
+            m_LastTime = time0;
+            SetValue(Mathf.Clamp(time0, 0, duration)); 
         }
 
         // time是去掉了offset后的时间