一天的倒计时

GameDataManager.Instance.taskTime--;
this.timeText.changeText(
            `${Math.floor(GameDataManager.Instance.taskTime / 3600)}:${Math.floor(
                (GameDataManager.Instance.taskTime % 3600) / 60
            )}:${Math.floor((GameDataManager.Instance.taskTime % 3600) % 60)}`
        );