46 lines
1.3 KiB
JavaScript
46 lines
1.3 KiB
JavaScript
/**
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* 自定义抖动效果
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*/
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var Shake = cc.Class({
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extends: cc.Component,
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properties: {
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//抖动时间
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duration: 0,
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//X轴抖动范围
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shakeX: 0,
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shakeY: 0,
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},
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shake: function (callback) {
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if(this.shaking){
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return;
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}
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this.callback = callback;
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this.shaking = true;
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this.dtCost = 0;
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this.nodeInitialPos = this.node.getPosition();
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this.unschedule(this.doSchedule);
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this.schedule(this.doSchedule, 0, cc.macro.REPEAT_FOREVER, 0);
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},
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doSchedule: function (dt) {
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var dt2 = dt * 50;
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var randX = this.getRandomStrength(-this.shakeX, this.shakeX) * dt2;
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var randY = this.getRandomStrength(-this.shakeY, this.shakeY) * dt2;
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this.node.setPosition(cc.pAdd(this.nodeInitialPos, cc.v2(randX, randY)));
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this.dtCost += dt;
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if (this.dtCost >= this.duration) {
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this.unschedule(this.doSchedule);
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this.node.setPosition(this.nodeInitialPos);
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this.shaking = false;
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if(this.callback){
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this.callback();
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}
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}
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},
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//获取两个数间的随机值
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getRandomStrength: function (min, max) {
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return Math.random() * (max - min + 1) + min;
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},
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});
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