如何在 Phaser JS 中实现一个好的计时器

嗨，我目前正在为我的应用程序开发一个计时器，我将使用 phonegap 将其移植到 android 手机上，它是关于带有 10 秒计时器的球类游戏

目前我正在使用计时器++增量

createLevel: function(lvl) {
    // create levels manually
    // TODO: import from level editor
    switch(lvl) {
        case 1: {
            timer2 = 11;
            walls.create((320-128)/2, (480-32)/2, 'element-w').body.immovable = true;
            break;
        }
        case 2: {
            timer2 = 11;
            walls.create code here
            break;
        }
        case 3: {
            timer2 = 11;
            walls.create code here
            break;
        }
        case 4: {
            timer2 = 11;
            walls.create code here
            break;
        }
        case 5: {
            timer2 = 11;
            walls.create code here
            break;
        }
        case 6:{
            timer2 = 11;
            walls.create code here
        break;
        }
        case 7:{
            timer2 = 11;
            walls.create code here
        break;
        }
        case 8:
        {
            timer2 = 11;
            walls.create code here
        break;
        }
        case 9:
        {   
            timer2 = 11;
            walls.create code here
        break;
        }
        case 10:
        {
            timer2 = 11;
            walls.create code here
        break;
        }
        default: {
            break;
        }
    }
},
updateCounter: function() {
    timer++;
    timer2--;
    timerText.content = "Time: "+timer2;
    totalTimeText.content = "Total time: "+(totalTimer+timer);
    if(timer2==-1)
    {
        //this.game.add.text(320/3, 480/2, "GAMEOVER", { font: "36px Cambria", fill: "#ffff00" });
        this.game.paused =! this.game.paused;
        this.buttonContinue = this.add.button(0, 0, 'gameover', this.mainM, this);
        totalTimer=0;
        timer=-2;
        level=1;
        //this.buttonContinue = this.add.button(0, 0, 'screen-howtoplay', this.game.state.start('MainMenu');, this);
    }

IM 使用计时器添加到总计时器和 Timer2 在游戏结束前将实际计时器设置为 11

然而，当游戏滞后时，计时器变得如此难以置信，快毁了我的游戏那么，我如何以这样的方式实现，即使设备滞后，计时器仍然正常运行？