yichael_3dboxing/assets/script/Timer.ts

import Tool from "./Tool";

const {ccclass, property} = cc._decorator;

@ccclass
export default /**比赛计时器 */
class Timer extends cc.Component {
    public static EventType_ZERO:string = 'zero';
    private label:cc.Label;
    public time:number;
    private counting:boolean;

    /**
     * 初始化
     * @param second 倒计时秒数
     */
    public init(second:number,label:cc.Label):void{
        this.label = label;
        this.label.node.color = cc.Color.GREEN;
        this.time = second;
        this.label.string = Tool.timeFormat(this.time);
    }
    
    /**开始计时 */
    public startCountTime():void{
        this.counting = true;
    }

    /**停止计时 */
    public stopCountTime():void{
        this.counting = false;
    }

    /**更新时间 */
    public update(dt:number):void{
        if(this.counting&&this.time>0){
            let nextTime = this.time - dt;
            if(nextTime>0){
                this.time = nextTime;
            }else{
                this.time = 0;
            }
            if(this.time<10){
                this.label.node.color = cc.Color.RED;
            }
            this.label.string = Tool.timeFormat(this.time);
            if(this.time==0){
                this.counting = false;
                this.node.emit(Timer.EventType_ZERO);            
            }
        }
    }

    /**显示开始倒计时动画 */
    public showStartCountDownAnimation(parent:cc.Node,callback:Function):void{
        for(let i=3;i>=0;i--){
            this.scheduleOnce(()=>{
                let node = new cc.Node();
                node.addComponent(cc.Sprite).spriteFrame = cc.loader.getRes('texture/font_'+(i==0?'fight':i),cc.SpriteFrame);
                node.setScale(4);
                node.setPosition(0,250);
                parent.addChild(node);
                node.runAction(cc.sequence(cc.scaleBy(0.6,0.8).easing(cc.easeBackInOut()),cc.callFunc(()=>{
                    node.destroy();
                    if(i==1){
                        cc.audioEngine.playEffect(cc.loader.getRes('audio/fight',cc.AudioClip),false);
                    }
                    if(i==0&&callback)callback();
                },this)));
            },(3-i)*1);
        }
    }
}