shell指令碼遊戲之--俄羅斯方塊
#!/bin/bash
#Tetris Game
#10.21.2003 xhchen<[email][email protected][/email]>
#APP declaration
APP_NAME="${0##*[\/]}"
APP_VERSION=“1.0”
#顏色定義
cRed=1
cGreen=2
cYellow=3
cBlue=4
cFuchsia=5
cCyan=6
cWhite=7
colorTable=($cRed $cGreen $cYellow $cBlue $cFuchsia $cCyan $cWhite)
#位置和大小
iLeft=3
iTop=2
((iTrayLeft = iLeft + 2))
((iTrayTop = iTop + 1))
((iTrayWidth = 10))
((iTrayHeight = 15))
#顏色設定
cBorder=cFuchsia
cScoreValue=$cCyan
#控制訊號
#改遊戲使用兩個程序，一個用於接收輸入，一個用於遊戲流程和顯示介面;
#當前者接收到上下左右等按鍵時，通過向後者傳送signal的方式通知後者。
sigRotate=25
sigLeft=26
sigRight=27
sigDown=28
sigAllDown=29
sigExit=30
#七中不同的方塊的定義
#通過旋轉，每種方塊的顯示的樣式可能有幾種
box0=(0 0 0 1 1 0 1 1)
box1=(0 2 1 2 2 2 3 2 1 0 1 1 1 2 1 3)
box2=(0 0 0 1 1 1 1 2 0 1 1 0 1 1 2 0)
box3=(0 1 0 2 1 0 1 1 0 0 1 0 1 1 2 1)
box4=(0 1 0 2 1 1 2 1 1 0 1 1 1 2 2 2 0 1 1 1 2 0 2 1 0 0 1 0 1 1 1 2)
box5=(0 1 1 1 2 1 2 2 1 0 1 1 1 2 2 0 0 0 0 1 1 1 2 1 0 2 1 0 1 1 1 2)
box6=(0 1 1 1 1 2 2 1 1 0 1 1 1 2 2 1 0 1 1 0 1 1 2 1 0 1 1 0 1 1 1 2)
#所有其中方塊的定義都放到box變數中
box=(${box0[@]} ${box1[@]} ${box2[@]} ${box3[@]} ${box4[@]} ${box5[@]} ${box6[@]})
#各種方塊旋轉後可能的樣式數目
countBox=(1 2 2 2 4 4 4)
#各種方塊再box陣列中的偏移
offsetBox=(0 1 3 5 7 11 15)
#每提高一個速度級需要積累的分數
iScoreEachLevel=50 #be greater than 7
#執行時資料
sig=0 #接收到的signal
iScore=0 #總分
iLevel=0 #速度級
boxNew=() #新下落的方塊的位置定義
cBoxNew=0 #新下落的方塊的顏色
iBoxNewType=0 #新下落的方塊的種類
iBoxNewRotate=0 #新下落的方塊的旋轉角度
boxCur=() #當前方塊的位置定義
cBoxCur=0 #當前方塊的顏色
iBoxCurType=0 #當前方塊的種類
iBoxCurRotate=0 #當前方塊的旋轉角度
boxCurX=-1 #當前方塊的x座標位置
boxCurY=-1 #當前方塊的y座標位置
iMap=() #背景方塊圖表
#初始化所有背景方塊為-1, 表示沒有方塊
for ((i = 0; i < iTrayHeight * iTrayWidth; i++)); do iMap[$i]=-1; done
#接收輸入的程序的主函式
function RunAsKeyReceiver()
{
local pidDisplayer key aKey sig cESC sTTY
pidDisplayer=$1
aKey=(0 0 0)
cESC=`echo -ne "\033"`
cSpace=`echo -ne "\040"`
#儲存終端屬性。在read -s讀取終端鍵時，終端的屬性會被暫時改變。
#如果在read -s時程式被不幸殺掉，可能會導致終端混亂，
#需要在程式退出時恢復終端屬性。
sTTY=`stty -g`
#捕捉退出訊號
trap "MyExit;" INT TERM
trap "MyExitNoSub;" $sigExit
#隱藏游標
echo -ne "\033[?25l"
while :
do
#讀取輸入。注-s不回顯，-n讀到一個字元立即返回
read -s -n 1 key
aKey[0]=${aKey[1]}
aKey[1]=${aKey[2]}
aKey[2]=$key
sig=0
#判斷輸入了何種鍵
if [[ $key == $cESC && ${aKey[1]} == $cESC ]]
then
#ESC鍵
MyExit
elif [[ ${aKey[0]} == $cESC && ${aKey[1]} == "[" ]]
then
if [[ $key == "A" ]]; then sig=$sigRotate #<向上鍵>
elif [[ $key == "B" ]]; then sig=$sigDown #<向下鍵>
elif [[ $key == "D" ]]; then sig=$sigLeft #<向左鍵>
elif [[ $key == "C" ]]; then sig=$sigRight #<向右鍵>
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 #空格鍵
elif [[ $key == "Q" || $key == "q" ]] #Q, q
then
MyExit
fi
if [[ $sig != 0 ]]
then
#向另一程序傳送訊息
kill -$sig $pidDisplayer
fi
done
}
#退出前的恢復
function MyExitNoSub()
{
local y
#恢復終端屬性
stty $sTTY
((y = iTop + iTrayHeight + 4))
#顯示游標
echo -e "\033[?25h\033[${y};0H"
exit
}
function MyExit()
{
#通知顯示程序需要退出
kill -$sigExit $pidDisplayer
MyExitNoSub
}
#處理顯示和遊戲流程的主函式
function RunAsDisplayer()
{
local sigThis
InitDraw
#掛載各種訊號的處理函式
trap "sig=$sigRotate;" $sigRotate
trap "sig=$sigLeft;" $sigLeft
trap "sig=$sigRight;" $sigRight
trap "sig=$sigDown;" $sigDown
trap "sig=$sigAllDown;" $sigAllDown
trap "ShowExit;" $sigExit
while :
do
#根據當前的速度級iLevel不同，設定相應的迴圈的次數
for ((i = 0; i < 21 - iLevel; i++))
do
sleep 0.02
sigThis=$sig
sig=0
#根據sig變數判斷是否接受到相應的訊號
if ((sigThis == sigRotate)); then BoxRotate; #旋轉
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), 測試是否可以把移動中的方塊移到(x, y)的位置, 返回0則可以, 1不可以
function BoxMove()
{
local j i x y xTest yTest
yTest=$1
xTest=$2
for ((j = 0; j < 8; j += 2))
do
((i = j + 1))
((y = KaTeX parse error: Expected '}', got 'EOF' at end of input: {boxCur[j]} + yTest))
((x = KaTeX parse error: Expected '}', got 'EOF' at end of input: {boxCur[i]} + xTest))
if (( y < 0 || y >= iTrayHeight || x < 0 || x >= iTrayWidth))
then
#撞到牆壁了
return 1
fi
if ((${iMap[y * iTrayWidth + x]} != -1 ))
then
#撞到其他已經存在的方塊了
return 1
fi
done
return 0;
}
#將當前移動中的方塊放到背景方塊中去,
#並計算新的分數和速度級。(即一次方塊落到底部)
function Box2Map()
{
local j i x y xp yp line
#將當前移動中的方塊放到背景方塊中去
for ((j = 0; j < 8; j += 2))
do
((i = j + 1))
((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=0
for ((j = 0; j < iTrayWidth * iTrayHeight; j += iTrayWidth))
do
for ((i = j + iTrayWidth - 1; i >= j; i--))
do
if ((${iMap[$i]} == -1)); then break; fi
done
if ((i >= j)); then continue; fi
((line++))
for ((i = j - 1; i >= 0; i--))
do
((x = i + iTrayWidth))
iMap[$x]=${iMap[$i]}
done
for ((i = 0; i < iTrayWidth; i++))
do
iMap[$i]=-1
done
done
if ((line == 0)); then return; fi
#根據消去的行數line計算分數和速度級
((x = iLeft + iTrayWidth * 2 + 7))
((y = iTop + 11))
((iScore += line * 2 - 1))
#顯示新的分數
echo -ne "\033[1m\033[3${cScoreValue}m\033[${y};${x}H${iScore} "
if ((iScore % iScoreEachLevel < line * 2 - 1))
then
if ((iLevel < 20))
then
((iLevel++))
((y = iTop + 14))
#顯示新的速度級
echo -ne "\033[3${cScoreValue}m\033[${y};${x}H${iLevel} "
fi
fi
echo -ne "\033[0m"
#重新顯示背景方塊
for ((y = 0; y < iTrayHeight; y++))
do
((yp = y + iTrayTop + 1))
((xp = iTrayLeft + 1))
((i = y * iTrayWidth))
echo -ne "\033[${yp};${xp}H"
for ((x = 0; x < iTrayWidth; x++))
do
((j = i + x))
if ((${iMap[$j]} == -1))
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 + 1)) #新的y座標
if BoxMove $y KaTeX parse error: Expected 'EOF', got '#' at position 16: boxCurX #̲測試是否可以下落一行
…sDrawCurBox 1" #顯示新的下落後方塊
echo -ne $s
else
#走到這兒, 如果不能下落了
Box2Map #將當前移動中的方塊貼到背景方塊中
RandomBox #產生新的方塊
fi
}
#左移一列
function BoxLeft()
{
local x s
((x = boxCurX - 1))
if BoxMove $boxCurY sDrawCurBox 1
echo -ne $s
fi
}
#右移一列
function BoxRight()
{
local x s
((x = boxCurX + 1))
if BoxMove $boxCurY sDrawCurBox 1
echo -ne $s
fi
}
#下落到底
function BoxAllDown()
{
local k j i x y iDown s
iDown=$iTrayHeight
#計算一共需要下落多少行
for ((j = 0; j < 8; j += 2))
do
((i = j + 1))
((y = ${boxCur[$j]} + boxCurY))
((x = ${boxCur[$i]} + boxCurX))
for ((k = y + 1; k < iTrayHeight; k++))
do
((i = k * iTrayWidth + x))
if (( ${iMap[$i]} != -1)); then break; fi
done
((k -= y + 1))
if (( $iDown > $k )); then iDown=$k; fi
done
s=`DrawCurBox 0` #將舊的方塊抹去
((boxCurY += iDown))
s=$s`DrawCurBox 1` #顯示新的下落後的方塊
echo -ne $s
Box2Map #將當前移動中的方塊貼到背景方塊中
RandomBox #產生新的方塊
}
#旋轉方塊
function BoxRotate()
{
local iCount iTestRotate boxTest j i s
iCount=KaTeX parse error: Expected '}', got 'EOF' at end of input: {countBox[iBoxCurType]} #當前的方塊經旋轉可以產生的樣式的數目
#計算旋轉後的新的樣式
((iTestRotate = iBoxCurRotate + 1))
if ((iTestRotate >= iCount))
then
((iTestRotate = 0))
fi
#更新到新的樣式, 儲存老的樣式(但不顯示)
for ((j = 0, i = (${offsetBox[$iBoxCurType]} + $iTestRotate) * 8; j < 8; j++, i++))
do
boxTest[$j]=${boxCur[$j]}
boxCur[$j]=${box[$i]}
done
if BoxMove $boxCurY $boxCurX #測試旋轉後是否有空間放的下
then
#抹去舊的方塊
for ((j = 0; j < 8; j++))
do
boxCur[$j]=${boxTest[$j]}
done
s=`DrawCurBox 0`
#畫上新的方塊
for ((j = 0, i = (${offsetBox[$iBoxCurType]} + $iTestRotate) * 8; j < 8; j++, i++))
do
boxCur[$j]=${box[$i]}
done
s=$s`DrawCurBox 1`
echo -ne $s
iBoxCurRotate=$iTestRotate
else
#不能旋轉，還是繼續使用老的樣式
for ((j = 0; j < 8; j++))
do
boxCur[$j]=${boxTest[$j]}
done
fi
}
#DrawCurBox(bDraw), 繪製當前移動中的方塊, bDraw為1, 畫上, bDraw為0, 抹去方塊。
function DrawCurBox()
{
local i j t bDraw sBox s
bDraw=$1
s=""
if (( bDraw == 0 ))
then
sBox="\040\040"
else
sBox="[]"
s=$s"\033[1m\033[7m\033[3${cBoxCur}m\033[4${cBoxCur}m"
fi
for ((j = 0; j < 8; j += 2))
do
((i = iTrayTop + 1 + ${boxCur[$j]} + boxCurY))
((t = iTrayLeft + 1 + 2 * (boxCurX + ${boxCur[$j + 1]})))
#\033[y;xH, 游標到(x, y)處
s=$s"\033[${i};${t}H${sBox}"
done
s=$s"\033[0m"
echo -n $s
}
#更新新的方塊
function RandomBox()
{
local i j t
#更新當前移動的方塊
iBoxCurType=${iBoxNewType}
iBoxCurRotate=${iBoxNewRotate}
cBoxCur=${cBoxNew}
for ((j = 0; j < ${#boxNew[@]}; j++))
do
boxCur[$j]=${boxNew[$j]}
done
#顯示當前移動的方塊
if (( ${#boxCur[@]} == 8 ))
then
#計算當前方塊該從頂端哪一行"冒"出來
for ((j = 0, t = 4; j < 8; j += 2))
do
if ((${boxCur[$j]} < t)); then t=${boxCur[$j]}; fi
done
((boxCurY = -t))
for ((j = 1, i = -4, t = 20; j < 8; j += 2))
do
if ((${boxCur[$j]} > i)); then i=${boxCur[$j]}; fi
if ((${boxCur[$j]} < t)); then t=${boxCur[$j]}; fi
done
((boxCurX = (iTrayWidth - 1 - i - t) / 2))
#顯示當前移動的方塊
echo -ne `DrawCurBox 1`
#如果方塊一出來就沒處放，Game over!
if ! BoxMove $boxCurY $boxCurX
then
kill -$sigExit ${PPID}
ShowExit
fi
fi
#清除右邊預顯示的方塊
for ((j = 0; j < 4; j++))
do
((i = iTop + 1 + j))
((t = iLeft + 2 * iTrayWidth + 7))
echo -ne "\033[${i};${t}H "
done
#隨機產生新的方塊
((iBoxNewType = RANDOM % ${#offsetBox[@]}))
((iBoxNewRotate = RANDOM % ${countBox[$iBoxNewType]}))
for ((j = 0, i = (${offsetBox[$iBoxNewType]} + $iBoxNewRotate) * 8; j < 8; j++, i++))
do
boxNew[$j]=${box[$i]};
done
((cBoxNew = ${colorTable[RANDOM % ${#colorTable[@]}]}))
#顯示右邊預顯示的方塊
echo -ne "\033[1m\033[7m\033[3${cBoxNew}m\033[4${cBoxNew}m"
for ((j = 0; j < 8; j += 2))
do
((i = iTop + 1 + ${boxNew[$j]}))
((t = iLeft + 2 * iTrayWidth + 7 + 2 * ${boxNew[$j + 1]}))
echo -ne "\033[${i};${t}H[]"
done
echo -ne "\033[0m"
}
#初始繪製
function InitDraw()
{
clear
RandomBox #隨機產生方塊，這時右邊預顯示視窗中有方快了
RandomBox #再隨機產生方塊，右邊預顯示視窗中的方塊被更新，原先的方塊將開始下落
local i t1 t2 t3
#顯示邊框
echo -ne "\033[1m"
echo -ne "\033[3${cBorder}m\033[4${cBorder}m"
((t2 = iLeft + 1))
((t3 = iLeft + iTrayWidth * 2 + 3))
for ((i = 0; i < iTrayHeight; i++))
do
((t1 = i + iTop + 2))
echo -ne "\033[${t1};${t2}H||"
echo -ne "\033[${t1};${t3}H||"
done
((t2 = iTop + iTrayHeight + 2))
for ((i = 0; i < iTrayWidth + 2; i++))
do
((t1 = i * 2 + iLeft + 1))
echo -ne "\033[${iTrayTop};${t1}H=="
echo -ne "\033[${t2};${t1}H=="
done
echo -ne "\033[0m"
#顯示"Score"和"Level"字樣
echo -ne "\033[1m"
((t1 = iLeft + iTrayWidth * 2 + 7))
((t2 = iTop + 10))
echo -ne "\033[3${cScore}m\033[${t2};${t1}HScore"
((t2 = iTop + 11))
echo -ne "\033[3${cScoreValue}m\033[${t2};${t1}H${iScore}"
((t2 = iTop + 13))
echo -ne "\033[3${cScore}m\033[${t2};${t1}HLevel"
((t2 = iTop + 14))
echo -ne "\033[3${cScoreValue}m\033[${t2};${t1}H${iLevel}"
echo -ne "\033[0m"
}
#退出時顯示GameOVer!
function ShowExit()
{
local y
((y = iTrayHeight + iTrayTop + 3))
echo -e “\033[${y};0HGameOver!\033[0m”
exit
}
#顯示用法.
function Usage
{
cat << EOF
Usage: $APP_NAME
Start tetris game.
-h, --help display this help and exit
–version output version information and exit
EOF
}
#遊戲主程式在這兒開始.
if [[ “$1” == “-h” || “$1” == “–help” ]]; then
Usage
elif [[ “APP_NAME $APP_VERSION”
elif [[ “$1” == “–show” ]]; then
#當發現具有引數–show時，執行顯示函式
RunAsDisplayer
else
bash $0 --show& #以引數–show將本程式再執行一遍
RunAsKeyReceiver $! #以上一行產生的程序的程序號作為引數
fi