教程目录
1 演示效果
2 实现原理
3 Demo
1 演示效果
主要参考9ria帖子,年代久远,忘了。
另可参考 jquery+css3实现元素颤抖特效
PC演示地址
手机扫码:
2 实现原理
定时器,每隔一段时间改变震动对象的x,y。 可追加rotation和alpha。
使用方法
[C#] 纯文本查看 复制代码
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震动目标obj,1秒内震动10次,震动最大距离10 ShakeTool.getInstance().shakeObj(obj, 1, 10, 10); |
工具源码
[C#] 纯文本查看 复制代码
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/** * 震动工具 * @author chenkai * [url=home.php?mod=space&uid=81950]@since[/url] 2017/5/24 * * Example: * 震动目标obj,1秒内震动10次,震动最大距离10 * ShakeTool.getInstance().shakeObj(obj, 1, 10, 10); */ class ShakeTool { private static instance:ShakeTool; //单例 private initX:number; //初始位置 private initY: number; private target:egret.DisplayObject; //震动目标 private maxDis: number; //震动距离 private count: number = 0; //计时器次数 private rate: number; //一秒震动次数 private timer:egret.Timer = new egret.Timer(1000); public static getInstance():ShakeTool{ if ( this .instance == null ){ this .instance = new ShakeTool(); } return this .instance; } /** * 震动显示对象 * @param target 震动目标对象 * @param time 震动持续时长(秒) * @param rate 震动频率(一秒震动多少次) * @param maxDis 震动最大距离 */ public shakeObj(target: egret.DisplayObject,time: number,rate: number,maxDis: number): void { this .target = target; this .initX = target.x; this .initY = target.y; this .maxDis = maxDis; this .count = time * rate; this .rate = rate; this .timer.delay = 1000/rate; this .timer.repeatCount = this .count; this .timer.addEventListener(egret.TimerEvent.TIMER, this .shaking, this ); this .timer.addEventListener(egret.TimerEvent.TIMER_COMPLETE, this .shakeComplete, this ); this .timer.reset(); this .timer.start(); } private shaking(): void { egret.Tween.removeTweens( this .target); this .target.x = this .initX - this .maxDis + Math.random()* this .maxDis*2; this .target.y = this .initY - this .maxDis + Math.random()* this .maxDis*2; egret.Tween. get ( this .target).to({x: this .initX, y: this .initY},999/ this .rate); } private shakeComplete(): void { if ( this .target){ egret.Tween.removeTweens( this .target); this .target.x = this .initX; this .target.y = this .initY; } this .timer.removeEventListener(egret.TimerEvent.TIMER, this .shaking, this ); this .timer.removeEventListener(egret.TimerEvent.TIMER_COMPLETE, this .shakeComplete, this ); } /**停止震动 */ public stop(){ this .shakeComplete(); } } |