shell脚本实例-游戏脚本

http://bbs.chinaunix.net/thread-3580033-1-1.html　　shell游戏收集贴    

#!/bin/bash   

    # Tetris Game   

    #APP declaration
    APP_NAME="${0##*[\\/]}"
    APP_VERSION="1.0"  

    #颜色定义
    cRed=
    cGreen=
    cYellow=
    cBlue=
    cFuchsia=
    cCyan=
    cWhite=
    colorTable=($cRed $cGreen $cYellow $cBlue $cFuchsia $cCyan $cWhite)   

    #位置和大小
    iLeft=
    iTop=
    ((iTrayLeft = iLeft + ))
    ((iTrayTop = iTop + ))
    ((iTrayWidth = ))
    ((iTrayHeight = ))   

    #颜色设置
    cBorder=$cGreen
    cScore=$cFuchsia
    cScoreValue=$cCyan   

    #控制信号
    #改游戏使用两个进程，一个用于接收输入，一个用于游戏流程和显示界面;
    #当前者接收到上下左右等按键时，通过向后者发送signal的方式通知后者。
    sigRotate=
    sigLeft=
    sigRight=
    sigDown=
    sigAllDown=
    sigExit=  

    #七中不同的方块的定义
    #通过旋转，每种方块的显示的样式可能有几种
    box0=(       )
    box1=(               )
    box2=(               )
    box3=(               )
    box4=(                               )
    box5=(                               )
    box6=(                               )
    #所有其中方块的定义都放到box变量中
    box=(${box0[@]} ${box1[@]} ${box2[@]} ${box3[@]} ${box4[@]} ${box5[@]} ${box6[@]})
    #各种方块旋转后可能的样式数目
    countBox=(      )
    #各种方块再box数组中的偏移
    offsetBox=(      )   

    #每提高一个速度级需要积累的分数
    iScoreEachLevel=        #be greater than   

    #运行时数据
    sig=                #接收到的signal
    iScore=        #总分
    iLevel=        #速度级
    boxNew=()        #新下落的方块的位置定义
    cBoxNew=        #新下落的方块的颜色
    iBoxNewType=        #新下落的方块的种类
    iBoxNewRotate=        #新下落的方块的旋转角度
    boxCur=()        #当前方块的位置定义
    cBoxCur=        #当前方块的颜色
    iBoxCurType=        #当前方块的种类
    iBoxCurRotate=        #当前方块的旋转角度
    boxCurX=-        #当前方块的x坐标位置
    boxCurY=-        #当前方块的y坐标位置
    iMap=()                #背景方块图表   

    #初始化所有背景方块为-, 表示没有方块
    for ((i = ; i < iTrayHeight * iTrayWidth; i++)); do iMap[$i]=-; done   

    #接收输入的进程的主函数
    function RunAsKeyReceiver()
    {
            local pidDisplayer key aKey sig cESC sTTY   

            pidDisplayer=$
            aKey=(  )   

            cESC=`echo -ne "\033"`
            cSpace=`echo -ne "\040"`   

            #保存终端属性。在read -s读取终端键时，终端的属性会被暂时改变。
            #如果在read -s时程序被不幸杀掉，可能会导致终端混乱，
            #需要在程序退出时恢复终端属性。
            sTTY=`stty -g`   

            #捕捉退出信号
            trap "MyExit;" INT TERM
            trap "MyExitNoSub;" $sigExit   

            #隐藏光标
            echo -ne "\033[?25l"  

            while :
            do
                    #读取输入。注-s不回显，-n读到一个字符立即返回
                    read -s -n  key   

                    aKey[]=${aKey[]}
                    aKey[]=${aKey[]}
                    aKey[]=$key
                    sig=  

                    #判断输入了何种键
                    if [[ $key == $cESC && ${aKey[]} == $cESC ]]
                    then
                            #ESC键
                            MyExit
                    elif [[ ${aKey[]} == $cESC && ${aKey[]} == "[" ]]
                    then
                            if [[ $key == "A" ]]; then sig=$sigRotate        #<向上键>
                            elif [[ $key == "B" ]]; then sig=$sigDown        #<向下键>
                            elif [[ $key == "D" ]]; then sig=$sigLeft        #<向左键>
                            elif [[ $key == "C" ]]; then sig=$sigRight        #<向右键>
                            fi
                    elif [[ $key == "W" || $key == "w" ]]; then sig=$sigRotate        #W, w
                    elif [[ $key == "S" || $key == "s" ]]; then sig=$sigDown        #S, s
                    elif [[ $key == "A" || $key == "a" ]]; then sig=$sigLeft        #A, a
                    elif [[ $key == "D" || $key == "d" ]]; then sig=$sigRight        #D, d
                    elif [[ "[$key]" == "[]" ]]; then sig=$sigAllDown        #空格键
                    elif [[ $key == "Q" || $key == "q" ]]                        #Q, q
                    then
                            MyExit
                    fi   

                    if [[ $sig !=  ]]
                    then
                            #向另一进程发送消息
                            kill -$sig $pidDisplayer
                    fi
            done
    }   

    #退出前的恢复
    function MyExitNoSub()
    {
            local y   

            #恢复终端属性
            stty $sTTY
            ((y = iTop + iTrayHeight + ))   

            #显示光标
            echo -e "\033[?25h\033[${y};0H"
            exit
    }   

    function MyExit()
    {
            #通知显示进程需要退出
            kill -$sigExit $pidDisplayer   

            MyExitNoSub
    }   

    #处理显示和游戏流程的主函数
    function RunAsDisplayer()
    {
            local sigThis
            InitDraw   

            #挂载各种信号的处理函数
            trap "sig=$sigRotate;" $sigRotate
            trap "sig=$sigLeft;" $sigLeft
            trap "sig=$sigRight;" $sigRight
            trap "sig=$sigDown;" $sigDown
            trap "sig=$sigAllDown;" $sigAllDown
            trap "ShowExit;" $sigExit   

            while :
            do
                    #根据当前的速度级iLevel不同，设定相应的循环的次数
                    for ((i = ; i <  - iLevel; i++))
                    do
                            sleep 0.02
                            sigThis=$sig
                            sig=  

                            #根据sig变量判断是否接受到相应的信号
                            if ((sigThis == sigRotate)); then BoxRotate;        #旋转
                            elif ((sigThis == sigLeft)); then BoxLeft;        #左移一列
                            elif ((sigThis == sigRight)); then BoxRight;        #右移一列
                            elif ((sigThis == sigDown)); then BoxDown;        #下落一行
                            elif ((sigThis == sigAllDown)); then BoxAllDown;        #下落到底
                            fi
                    done
                    #kill -$sigDown $$
                    BoxDown        #下落一行
            done
    }   

    #BoxMove(y, x), 测试是否可以把移动中的方块移到(x, y)的位置, 返回0则可以, 1不可以
    function BoxMove()
    {
            local j i x y xTest yTest
            yTest=$
            xTest=$
            for ((j = ; j < ; j += ))
            do
                    ((i = j + ))
                    ((y = ${boxCur[$j]} + yTest))
                    ((x = ${boxCur[$i]} + xTest))
                    if (( y <  || y >= iTrayHeight || x <  || x >= iTrayWidth))
                    then
                            #撞到墙壁了
                            return
                    fi
                    if ((${iMap[y * iTrayWidth + x]} != - ))
                    then
                            #撞到其他已经存在的方块了
                            return
                    fi
            done
            return ;
    }   

    #将当前移动中的方块放到背景方块中去,
    #并计算新的分数和速度级。(即一次方块落到底部)
    function Box2Map()
    {
            local j i x y xp yp line   

            #将当前移动中的方块放到背景方块中去
            for ((j = ; j < ; j += ))
            do
                    ((i = j + ))
                    ((y = ${boxCur[$j]} + boxCurY))
                    ((x = ${boxCur[$i]} + boxCurX))
                    ((i = y * iTrayWidth + x))
                    iMap[$i]=$cBoxCur
            done   

            #消去可被消去的行
            line=
            for ((j = ; j < iTrayWidth * iTrayHeight; j += iTrayWidth))
            do
                    for ((i = j + iTrayWidth - ; i >= j; i--))
                    do
                            if ((${iMap[$i]} == -)); then break; fi
                    done
                    if ((i >= j)); then continue; fi   

                    ((line++))
                    for ((i = j - ; i >= ; i--))
                    do
                            ((x = i + iTrayWidth))
                            iMap[$x]=${iMap[$i]}
                    done
                    for ((i = ; i < iTrayWidth; i++))
                    do
                            iMap[$i]=-
                    done
            done   

            if ((line == )); then return; fi   

            #根据消去的行数line计算分数和速度级
            ((x = iLeft + iTrayWidth *  + ))
            ((y = iTop + ))
            ((iScore += line *  - ))
            #显示新的分数
            echo -ne "\033[1m\033[3${cScoreValue}m\033[${y};${x}H${iScore}         "
            if ((iScore % iScoreEachLevel < line *  - ))
            then
                    if ((iLevel < ))
                    then
                            ((iLevel++))
                            ((y = iTop + ))
                            #显示新的速度级
                            echo -ne "\033[3${cScoreValue}m\033[${y};${x}H${iLevel}        "
                    fi
            fi
            echo -ne "\033[0m"  

            #重新显示背景方块
            for ((y = ; y < iTrayHeight; y++))
            do
                    ((yp = y + iTrayTop + ))
                    ((xp = iTrayLeft + ))
                    ((i = y * iTrayWidth))
                    echo -ne "\033[${yp};${xp}H"
                    for ((x = ; x < iTrayWidth; x++))
                    do
                            ((j = i + x))
                            if ((${iMap[$j]} == -))
                            then
                                    echo -ne "  "
                            else
                                    echo -ne "\033[1m\033[7m\033[3${iMap[$j]}m\033[4${iMap[$j]}m[]\033[0m"
                            fi
                    done
            done
    }   

    #下落一行
    function BoxDown()
    {
            local y s
            ((y = boxCurY + ))        #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
                    RandomBox        #产生新的方块
            fi
    }   

    #左移一列
    function BoxLeft()
    {
            local x s
            ((x = boxCurX - ))
            if BoxMove $boxCurY $x
            then
                    s=`DrawCurBox `
                    ((boxCurX = x))
                    s=$s`DrawCurBox `
                    echo -ne $s
            fi
    }   

    #右移一列
    function BoxRight()
    {
            local x s
            ((x = boxCurX + ))
            if BoxMove $boxCurY $x
            then
                    s=`DrawCurBox `
                    ((boxCurX = x))
                    s=$s`DrawCurBox `
                    echo -ne $s
            fi
    }   

    #下落到底
    function BoxAllDown()
    {
            local k j i x y iDown s
            iDown=$iTrayHeight   

            #计算一共需要下落多少行
            for ((j = ; j < ; j += ))
            do
                    ((i = j + ))
                    ((y = ${boxCur[$j]} + boxCurY))
                    ((x = ${boxCur[$i]} + boxCurX))
                    for ((k = y + ; k < iTrayHeight; k++))
                    do
                            ((i = k * iTrayWidth + x))
                            if (( ${iMap[$i]} != -)); then break; fi
                    done
                    ((k -= y + ))
                    if (( $iDown > $k )); then iDown=$k; fi
            done   

            s=`DrawCurBox `        #将旧的方块抹去
            ((boxCurY += iDown))
            s=$s`DrawCurBox `        #显示新的下落后的方块
            echo -ne $s
            Box2Map                #将当前移动中的方块贴到背景方块中
            RandomBox        #产生新的方块
    }   

    #旋转方块
    function BoxRotate()
    {
            local iCount iTestRotate boxTest j i s
            iCount=${countBox[$iBoxCurType]}        #当前的方块经旋转可以产生的样式的数目   

            #计算旋转后的新的样式
            ((iTestRotate = iBoxCurRotate + ))
            if ((iTestRotate >= iCount))
            then
                    ((iTestRotate = ))
            fi   

            #更新到新的样式, 保存老的样式(但不显示)
            for ((j = , i = (${offsetBox[$iBoxCurType]} + $iTestRotate) * ; j < ; j++, i++))
            do
                    boxTest[$j]=${boxCur[$j]}
                    boxCur[$j]=${box[$i]}
            done   

            if BoxMove $boxCurY $boxCurX        #测试旋转后是否有空间放的下
            then
                    #抹去旧的方块
                    for ((j = ; j < ; j++))
                    do
                            boxCur[$j]=${boxTest[$j]}
                    done
                    s=`DrawCurBox `   

                    #画上新的方块
                    for ((j = , i = (${offsetBox[$iBoxCurType]} + $iTestRotate) * ; j < ; j++, i++))
                    do
                            boxCur[$j]=${box[$i]}
                    done
                    s=$s`DrawCurBox `
                    echo -ne $s
                    iBoxCurRotate=$iTestRotate
            else
                    #不能旋转，还是继续使用老的样式
                    for ((j = ; j < ; j++))
                    do
                            boxCur[$j]=${boxTest[$j]}
                    done
            fi
    }   

    #DrawCurBox(bDraw), 绘制当前移动中的方块, bDraw为1, 画上, bDraw为0, 抹去方块。
    function DrawCurBox()
    {
            local i j t bDraw sBox s
            bDraw=$  

            s=""
            if (( bDraw ==  ))
            then
                    sBox="\040\040"
            else
                    sBox="[]"
                    s=$s"\033[1m\033[7m\033[3${cBoxCur}m\033[4${cBoxCur}m"
            fi   

            for ((j = ; j < ; j += ))
            do
                    ((i = iTrayTop +  + ${boxCur[$j]} + boxCurY))
                    ((t = iTrayLeft +  +  * (boxCurX + ${boxCur[$j + ]})))
                    #\[y;xH, 光标到(x, y)处
                    s=$s"\033[${i};${t}H${sBox}"
            done
            s=$s"\033[0m"
            echo -n $s
    }   

    #更新新的方块
    function RandomBox()
    {
            local i j t   

            #更新当前移动的方块
            iBoxCurType=${iBoxNewType}
            iBoxCurRotate=${iBoxNewRotate}
            cBoxCur=${cBoxNew}
            for ((j = ; j < ${#boxNew[@]}; j++))
            do
                    boxCur[$j]=${boxNew[$j]}
            done   

            #显示当前移动的方块
            if (( ${#boxCur[@]} ==  ))
            then
                    #计算当前方块该从顶端哪一行"冒"出来
                    for ((j = , t = ; j < ; j += ))
                    do
                            if ((${boxCur[$j]} < t)); then t=${boxCur[$j]}; fi
                    done
                    ((boxCurY = -t))
                    for ((j = , i = -, t = ; j < ; j += ))
                    do
                            if ((${boxCur[$j]} > i)); then i=${boxCur[$j]}; fi
                            if ((${boxCur[$j]} < t)); then t=${boxCur[$j]}; fi
                    done
                    ((boxCurX = (iTrayWidth -  - i - t) / ))   

                    #显示当前移动的方块
                    echo -ne `DrawCurBox `   

                    #如果方块一出来就没处放，Game over!
                    if ! BoxMove $boxCurY $boxCurX
                    then
                            kill -$sigExit ${PPID}
                            ShowExit
                    fi
            fi   

            #清除右边预显示的方块
            for ((j = ; j < ; j++))
            do
                    ((i = iTop +  + j))
                    ((t = iLeft +  * iTrayWidth + ))
                    echo -ne "\033[${i};${t}H        "
            done   

            #随机产生新的方块
            ((iBoxNewType = RANDOM % ${#offsetBox[@]}))
            ((iBoxNewRotate = RANDOM % ${countBox[$iBoxNewType]}))
            for ((j = , i = (${offsetBox[$iBoxNewType]} + $iBoxNewRotate) * ; j < ; j++, i++))
            do
                    boxNew[$j]=${box[$i]};
            done   

            ((cBoxNew = ${colorTable[RANDOM % ${#colorTable[@]}]}))   

            #显示右边预显示的方块
            echo -ne "\033[1m\033[7m\033[3${cBoxNew}m\033[4${cBoxNew}m"
            for ((j = ; j < ; j += ))
            do
                    ((i = iTop +  + ${boxNew[$j]}))
                    ((t = iLeft +  * iTrayWidth +  +  * ${boxNew[$j + ]}))
                    echo -ne "\033[${i};${t}H[]"
            done
            echo -ne "\033[0m"
    }   

    #初始绘制
    function InitDraw()
    {
            clear
            RandomBox        #随机产生方块，这时右边预显示窗口中有方快了
            RandomBox        #再随机产生方块，右边预显示窗口中的方块被更新，原先的方块将开始下落
            local i t1 t2 t3   

            #显示边框
            echo -ne "\033[1m"
            echo -ne "\033[3${cBorder}m\033[4${cBorder}m"  

            ((t2 = iLeft + ))
            ((t3 = iLeft + iTrayWidth *  + ))
            for ((i = ; i < iTrayHeight; i++))
            do
                    ((t1 = i + iTop + ))
                    echo -ne "\033[${t1};${t2}H||"
                    echo -ne "\033[${t1};${t3}H||"
            done   

            ((t2 = iTop + iTrayHeight + ))
            for ((i = ; i < iTrayWidth + ; i++))
            do
                    ((t1 = i *  + iLeft + ))
                    echo -ne "\033[${iTrayTop};${t1}H=="
                    echo -ne "\033[${t2};${t1}H=="
            done
            echo -ne "\033[0m"  

            #显示"Score"和"Level"字样
            echo -ne "\033[1m"
            ((t1 = iLeft + iTrayWidth *  + ))
            ((t2 = iTop + ))
            echo -ne "\033[3${cScore}m\033[${t2};${t1}HScore"
            ((t2 = iTop + ))
            echo -ne "\033[3${cScoreValue}m\033[${t2};${t1}H${iScore}"
            ((t2 = iTop + ))
            echo -ne "\033[3${cScore}m\033[${t2};${t1}HLevel"
            ((t2 = iTop + ))
            echo -ne "\033[3${cScoreValue}m\033[${t2};${t1}H${iLevel}"
            echo -ne "\033[0m"
    }   

    #退出时显示GameOVer!
    function ShowExit()
    {
            local y
            ((y = iTrayHeight + iTrayTop + ))
            echo -e "\033[${y};0HGameOver!\033[0m"
            exit
    }   

    #显示用法.
    function Usage()
    {
            cat << EOF
    Usage: $APP_NAME
    Start tetris game.   

      -h, --help              display this help and exit
          --version           output version information and exit   
EOF
    }   

    #游戏主程序在这儿开始.
    if [[ "$1" == "-h" || "$1" == "--help" ]]; then
            Usage
    elif [[ "$1" == "--version" ]]; then
            echo "$APP_NAME $APP_VERSION"
    elif [[ "$1" == "--show" ]]; then
            #当发现具有参数--show时，运行显示函数
            RunAsDisplayer
    else
            bash $ --show&        #以参数--show将本程序再运行一遍
            RunAsKeyReceiver $!        #以上一行产生的进程的进程号作为参数
    fi  

游戏似乎有些问题，注释掉以下代码便可运行。否则报错

#显示用法.
    function Usage
    {
            cat << EOF
    Usage: $APP_NAME
    Start tetris game.   

      -h, --help              display this help and exit
          --version           output version information and exit
    EOF
    }   

[root@-shiyan sed]# chmod u+x game
[root@-shiyan sed]# ./game -h
./game: line : warning: here-document at line  delimited by end-of-file (wanted `EOF')
./game: line : syntax error: unexpected end of file
最后发现，这是因为结尾的EOF前后不能有空白，仅此而已。

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