diff --git a/src/kiwano/2d/animation/AnimationWrapper.h b/src/kiwano/2d/animation/AnimationWrapper.h
index 8deb8c65..8640f51f 100644
--- a/src/kiwano/2d/animation/AnimationWrapper.h
+++ b/src/kiwano/2d/animation/AnimationWrapper.h
@@ -263,9 +263,9 @@ inline AnimationWrapper RotateTo(kiwano::Duration duration, float rotation)
 /// @brief 创建自定义动画
 /// @param duration 动画时长
 /// @param tween_func 动画回调函数
-inline AnimationWrapper Custom(kiwano::Duration duration, TweenFunc tween_func)
+inline AnimationWrapper Custom(kiwano::Duration duration, Function<void(Actor*, float)> tween_func)
 {
-    return AnimationWrapper(new CustomAnimation(duration, tween_func));
+    return AnimationWrapper(CustomAnimation::Create(duration, tween_func));
 }
 
 /// \~chinese
diff --git a/src/kiwano/2d/animation/CustomAnimation.cpp b/src/kiwano/2d/animation/CustomAnimation.cpp
index 3656eef3..57443eaf 100644
--- a/src/kiwano/2d/animation/CustomAnimation.cpp
+++ b/src/kiwano/2d/animation/CustomAnimation.cpp
@@ -23,29 +23,51 @@
 namespace kiwano
 {
 
-CustomAnimation::CustomAnimation(Duration duration, TweenFunc tween_func)
+CustomAnimation::CustomAnimation(Duration duration)
     : TweenAnimation(duration)
-    , tween_func_(tween_func)
 {
 }
 
-CustomAnimation* CustomAnimation::Clone() const
+CustomAnimationPtr CustomAnimation::Create(Duration duration, Function<void(Actor*, float)> tween_func)
 {
-    CustomAnimation* ptr = new CustomAnimation(GetDuration(), tween_func_);
-    DoClone(ptr);
+    class CallbackCustomAnimation : public CustomAnimation
+    {
+    public:
+        CallbackCustomAnimation(Duration duration, Function<void(Actor*, float)> tween_func)
+            : CustomAnimation(duration)
+            , tween_func_(tween_func)
+        {
+        }
+
+        void Init(Actor* target) override
+        {
+            if (!tween_func_)
+                this->Done();
+        }
+
+        void OnAnimationUpdate(Actor* target, float frac) override
+        {
+            if (tween_func_)
+                tween_func_(target, frac);
+        }
+
+        CallbackCustomAnimation* Clone() const
+        {
+            CallbackCustomAnimation* ptr = new CallbackCustomAnimation(GetDuration(), tween_func_);
+            DoClone(ptr);
+            return ptr;
+        }
+
+    private:
+        Function<void(Actor*, float)> tween_func_;
+    };
+    CustomAnimationPtr ptr = new CallbackCustomAnimation(duration, tween_func);
     return ptr;
 }
 
-void CustomAnimation::Init(Actor* target)
-{
-    if (!tween_func_)
-        this->Done();
-}
-
 void CustomAnimation::UpdateTween(Actor* target, float frac)
 {
-    if (tween_func_)
-        tween_func_(target, frac);
+    OnAnimationUpdate(target, frac);
 }
 
 }  // namespace kiwano
diff --git a/src/kiwano/2d/animation/CustomAnimation.h b/src/kiwano/2d/animation/CustomAnimation.h
index 3c41c745..766ccfd5 100644
--- a/src/kiwano/2d/animation/CustomAnimation.h
+++ b/src/kiwano/2d/animation/CustomAnimation.h
@@ -30,34 +30,35 @@ KGE_DECLARE_SMART_PTR(CustomAnimation);
  * @{
  */
 
-
-/// \~chinese
-/// @brief 补间动画回调函数
-/// @details 在动画更新时回调该函数，第一个参数是执行动画的目标，第二个参数是动画进度（0.0 - 1.0）
-using TweenFunc = Function<void(Actor* /* target */, float /* frac */)>;
-
 /// \~chinese
 /// @brief 自定义动画
 class KGE_API CustomAnimation : public TweenAnimation
 {
 public:
+    /// \~chinese
+    /// @brief 创建自定义动画
+    /// @param duration 动画时长
+    CustomAnimation(Duration duration);
+
     /// \~chinese
     /// @brief 创建自定义动画
     /// @param duration 动画时长
     /// @param tween_func 动画回调函数
-    CustomAnimation(Duration duration, TweenFunc tween_func);
+    static CustomAnimationPtr Create(Duration duration, Function<void(Actor*, float)> tween_func);
 
     /// \~chinese
-    /// @brief 获取动画回调函数
-    TweenFunc GetTweenFunc() const;
-
-    /// \~chinese
-    /// @brief 设置动画回调函数
-    void SetTweenFunc(const TweenFunc& tween_func);
+    /// @brief 动画更新时
+    /// @param target 执行动画的目标
+    /// @param frac 动画进度（0.0 - 1.0）
+    virtual void OnAnimationUpdate(Actor* target, float frac) = 0;
 
     /// \~chinese
     /// @brief 获取该动画的拷贝对象
-    CustomAnimation* Clone() const override;
+    CustomAnimation* Clone() const override
+    {
+        KGE_ERRORF("Clone() not supported in CustomAnimation");
+        return nullptr;
+    }
 
     /// \~chinese
     /// @brief 获取该动画的倒转
@@ -68,26 +69,9 @@ public:
     }
 
 protected:
-    void Init(Actor* target) override;
-
     void UpdateTween(Actor* target, float frac) override;
-
-private:
-    TweenFunc tween_func_;
 };
 
 /** @} */
 
-
-
-inline TweenFunc CustomAnimation::GetTweenFunc() const
-{
-    return tween_func_;
-}
-
-inline void CustomAnimation::SetTweenFunc(const TweenFunc& tween_func)
-{
-    tween_func_ = tween_func;
-}
-
 }  // namespace kiwano