shell脚本编写的俄罗斯方块游戏代码

                ((i = y * iTrayWidth))
                echo -ne "33[${yp};${xp}H"
                for ((x = 0; x < iTrayWidth; x++))
                do
                        ((j = i + x))
                        if ((${iMap[$j]} == -1))
                        then
                                echo -ne "  "
                        else
                                echo -ne "33[1m33[7m33[3${iMap[$j]}m33[4${iMap[$j]}m[]33[0m"
                        fi
                done
        done
}

 
#下落一行
function BoxDown()
{
        local y s
        ((y = boxCurY + 1))        #新的y坐标
        if BoxMove $y $boxCurX        #测试是否可以下落一行
        then
                s="`DrawCurBox 0`"        #将旧的方块抹去
                ((boxCurY = y))
                s="$s`DrawCurBox 1`"        #显示新的下落后方块
                echo -ne $s
        else
                #走到这儿, 如果不能下落了
                Box2Map                #将当前移动中的方块贴到背景方块中