Unity Spine动画中Complete 委托 、事件、缓存 += -= 委托

一、API概念

1、Spine.AnimationState支持的事件:
2、Start:当动画开始播放;
3、End:当动画被清除或中断;
4、Complete:当动画完成它全部的持续时间;
5、Event:当检测到用户自定义的事件;

二、使用

 private List<System.Action> mUnRegisterEventActions = new List<System.Action>();
 
 
 public void UseSpine()
 {   
 		// xxxSpine 是 SkeletonGraphic 类型的变量
		PlaySpineAddEvent(xxxSpine, "spine动画文件", false, () =>
        {
            leftSpine.AnimationState.SetAnimation(0, "spine动画文件执行Anim的名称", true);
        });
}
 
    // 执行Spined动画并添加事件
    public void PlaySpineAddEvent(SkeletonGraphic anim, string name, bool isLoop = false, System.Action action = null)
    {
        anim.AnimationState.SetAnimation(0, name, isLoop);
        TrackEntryDelegate ac = delegate
        {
            action();
        };
        anim.AnimationState.Complete += ac;
 
        mUnRegisterEventActions.Add(() =>
        {
            anim.AnimationState.Complete -= ac;
        });
    }

    public void UnRegisterAll()
    {
        mUnRegisterEventActions.ForEach(action => action());
        mUnRegisterEventActions.Clear();
    }

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