游戏内倒计时替换图片（NGUI）

private float curTime;
public float sumTime = 120;  //总时间

void Start() {
        StartCoroutine("startCountDown");
    }

public IEnumerator startCountDown() {
        while (sumTime > 0)
        {
            sumTime--;
            int a, b, c, x;
            x = (int)sumTime;
            a = x / 100;
            b = (x - 100 * a) / 10;
            c = (x - 100 * a - 10 * b);
            shuzi1.spriteName = a.ToString() + "k";
            shuzi2.spriteName = b.ToString() + "k";
            shuzi3.spriteName = c.ToString() + "k";
            if (sumTime == 0)
            {
                //当游戏时间用完则游戏结束
            }
            //每隔一秒调用一次
            yield return new WaitForSeconds(1);
        }
    }

同样我工程里图片名为0K-9K

代码很Low，目的是自己以后项目中随时拿过来用，也方便一些新手参考，大神勿喷