如何使cocos2d sprite每秒增加和减少（为脉动效果）？ [英] How to make cocos2d sprite scale up and down (for a pulsating effect) every second?

问题描述

我想让sprite每秒一次向上和向下缩放，使它看起来像是膨胀和脉动。我如何做到这一点？

I want to have a sprite scale up and down once every second to make it seem like it is bulging and pulsating. How can I do this?

推荐答案

由于post之前包含语法错误。更准确地说，我发布工作代码：

As the post before contains syntax errors. To be more precise, I post working code:

CCSprite * sprite = ...; // create the sprite.
id scaleUpAction =  [CCEaseInOut actionWithAction:[CCScaleTo actionWithDuration:1 scaleX:1.0 scaleY:1.0] rate:2.0];
id scaleDownAction = [CCEaseInOut actionWithAction:[CCScaleTo actionWithDuration:0.5 scaleX:0.8 scaleY:0.8] rate:2.0];
CCSequence *scaleSeq = [CCSequence actions:scaleUpAction, scaleDownAction, nil];
[sprite runAction:[CCRepeatForever actionWithAction:scaleSeq]];

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