71 lines
2.4 KiB
TypeScript
71 lines
2.4 KiB
TypeScript
// Learn TypeScript:
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// - [Chinese] http://docs.cocos.com/creator/manual/zh/scripting/typescript.html
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// - [English] http://www.cocos2d-x.org/docs/creator/manual/en/scripting/typescript.html
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// Learn Attribute:
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// - [Chinese] http://docs.cocos.com/creator/manual/zh/scripting/reference/attributes.html
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// - [English] http://www.cocos2d-x.org/docs/creator/manual/en/scripting/reference/attributes.html
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// Learn life-cycle callbacks:
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// - [Chinese] http://docs.cocos.com/creator/manual/zh/scripting/life-cycle-callbacks.html
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// - [English] http://www.cocos2d-x.org/docs/creator/manual/en/scripting/life-cycle-callbacks.html
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const {ccclass, property} = cc._decorator;
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@ccclass
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export default class Shake extends cc.ActionInterval {
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private _initial_x:number = 0;
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private _initial_y:number = 0;
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private _strength_x:number = 0;
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private _strength_y:number = 0;
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/**
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* 创建抖动动画
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* @param {number} duration 动画持续时长
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* @param {number} strength_x 抖动幅度： x方向
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* @param {number} strength_y 抖动幅度： y方向
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* @returns {Shake}
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*/
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public static create(duration:number,strength_x:number,strength_y:number):Shake
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{
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let act:Shake = new Shake();
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act.initWithDuration( duration,strength_x,strength_y );
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return act;
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}
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public initWithDuration(duration:number,strength_x:number,strength_y:number):boolean
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{
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cc.ActionInterval.prototype['initWithDuration'].apply(this,arguments);
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this._strength_x = strength_x;
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this._strength_y = strength_y;
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return true;
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}
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public fgRangeRand(min:number,max:number):number
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{
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let rnd:number = Math.random();
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return rnd * (max - min) + min;
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}
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public update(time:number):void
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{
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let randx = this.fgRangeRand(-this._strength_x,this._strength_x);
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let randy = this.fgRangeRand(-this._strength_y,this._strength_y);
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this.getTarget().setPosition(randx + this._initial_x,randy + this._initial_y);
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}
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public startWithTarget(target:cc.Node):void
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{
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cc.ActionInterval.prototype['startWithTarget'].apply(this,arguments);
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this._initial_x = target.x;
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this._initial_y = target.y;
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}
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public stop():void
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{
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this.getTarget().setPosition(new cc.Vec2(this._initial_x,this._initial_y));
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cc.ActionInterval.prototype['stop'].apply(this);
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}
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}
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