创建五角星的想法，通过设置锚点处理

本文链接：https://blog.youkuaiyun.com/yu265096/article/details/79710069

本文介绍如何使用 Cocos2d-x 游戏引擎创建星星动画效果。通过设置精灵的位置、旋转角度等属性，实现了五角星围绕中心点分布并保持一定旋转角度的视觉效果。

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var starSpFrame = cc.spriteFrameCache.getSpriteFrame("EmitLight.png");
var starSp = cc.Sprite.create(starSpFrame);
layer.addChild(starSp);
starSp.setAnchorPoint(cc.p(0.5,0.5));
starSp.setPosition(cc.p(675,500));
var radius = 200///半径
var rot = 30;

var starSp1 = cc.Sprite.create(starSpFrame);
starSp1.setAnchorPoint(cc.p(-radius/starSp1.getContentSize().width, 0.5));
layer.addChild(starSp1);
starSp1.setPosition(cc.p(675,500));
starSp1.setRotation(rot);

var starSp2 = cc.Sprite.create(starSpFrame);
starSp2.setAnchorPoint(cc.p(-radius/starSp1.getContentSize().width, 0.5));
layer.addChild(starSp2);
starSp2.setPosition(cc.p(675,500));
starSp2.setRotation(72*1 + rot);

var starSp3 = cc.Sprite.create(starSpFrame);
starSp3.setAnchorPoint(cc.p(-radius/starSp1.getContentSize().width, 0.5));
layer.addChild(starSp3);
starSp3.setPosition(cc.p(675,500));
starSp3.setRotation(72*2 + rot);

var starSp4 = cc.Sprite.create(starSpFrame);
starSp4.setAnchorPoint(cc.p(-radius/starSp1.getContentSize().width, 0.5));
layer.addChild(starSp4);
starSp4.setPosition(cc.p(675,500));
starSp4.setRotation(72*3 + rot);

var starSp5 = cc.Sprite.create(starSpFrame);
starSp5.setAnchorPoint(cc.p(-radius/starSp1.getContentSize().width, 0.5));
layer.addChild(starSp5);
starSp5.setPosition(cc.p(675,500));
starSp5.setRotation(72*4 + rot);