cocos2d-iphone - 关于 cocos2d CCAnimate。如何从刚刚停止的帧开始反转动画？

Question

你知道动画是如何从停止帧反转的吗？

ex> 动画帧是 1 -> 2 -> 3 -> 4 -> 5

如果我在 3 帧处触摸，则为 1 -> 2 -> 3 -> 2 -> 1 设置动画

如果我在 4 帧处触摸，则为 1 -> 2 -> 3 -> 4 -> 3 -> 2 -> 1 设置动画

嗯……有没有办法使用 CCAnimate 类？

Answer 1

你可以尝试这样的事情：

- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{

    //Here "numbers" is your Animation Sprite
    //Get display frame of the sprite
    CCSpriteFrame *currentFrame = [numbers displayFrame];
    GLuint index = currentFrame.texture.name;

    //Use this index to determine current frame's index
    //Beware!!! As I know it will not return a zero based index, so check it out with an output

    /*

    NEXT :

        - Now you know the current frame index, let's say it is 3
        - Re-order your spriteFrames like 3->2->1 (You have new spriteFrames array)
        - CCAnimation with this spriteFrames array
        - CCAction with this CCAnimation
        - Run the Action!!! There, your reversed animation.

    */

}