```#!/bin/bash
#APP declaration
APP_NAME="${0##*[\/]}"
APP_VERSION="1.0"
#颜色Definition
cred = 1
CGreen = 2
CYellow = 3
CBlue = 4
CFuchsia = 5
CCyan = 6
CWhite = 7
colorTable = ($ cred $ CGreen $ CYellow $ CBlue $ CFuchsia $ CCyan $ CWhite)
#Position and size iLeft=3
iTop=2
((iTrayLeft = iLeft + 2))
((iTrayTop = iTop + 1))
((iTrayWidth = 10))
((iTrayHeight = 15))
#Color settingscBorder =$cGreen
cScore=$cFuchsia
cScoreValue=$cCyan
#控制信号
# The game uses two processes, one for receiving input, one for game flow and display interface;
#When the former receives the up, down, left, and right buttons, the latter will be notified by sending a signal to the latter.
sigRotate=25
sigLeft=26
sigRight=27
sigDown=28
sigAllDown=29
sigExit=30
#七中异的盒的defined
#By rotating, there may be several display styles of each box
box0=(0 0 0 1 1 0 1 1)
box1=(0 2 1 2 2 2 3 2 1 0 1 1 1 2 1 3)
box2=(0 0 0 1 1 1 1 2 0 1 1 0 1 1 2 0)
box3=(0 1 0 2 1 0 1 1 0 0 1 0 1 1 2 1)
box4=(0 1 0 2 1 1 2 1 1 0 1 1 1 2 2 2 0 1 1 1 2 0 2 1 0 0 1 0 1 1 1 2)
box5=(0 1 1 1 2 1 2 2 1 0 1 1 1 2 2 0 0 0 0 1 1 1 1 2 1 0 2 1 0 1 1 1 2)
box6=(0 1 1 1 1 2 2 1 1 0 1 1 1 2 2 1 0 1 1 0 1 1 2 1 0 1 1 0 1 1 1 2) #All the box
definitions are placed in the box variable
box=(${box0[@]} ${box1[@]} ${box2[@]} ${box3[@]} ${box4[ @]} ${box5[@]} ${box6[@]}) #The
number of possible styles of various boxes after rotation
countBox=(1 2 2 2 4 4 4) #The
offset of various boxes in the box array
offsetBox=(0 1 3 5 7 11 15)
#Each speed level needs to be accumulated iScoreEachLevel=50 #be greater than 7
#跑时数据
sig=0
#Received signal iScore=0
#Total score iLevel=0
#speed level boxNew=()
#The position of the new falling box is defined cBoxNew=0
#The color of the new falling box iBoxNewType=0 # The type of the new falling box
iBoxNewRotate=0 #The rotation angle of the new falling box
boxCur=()
#The position of the current box is defined cBoxCur=0
#The color of the current box
iBoxCurType=0 #The type of the current box iBoxCurRotate=0 #The current box Rotation angle
boxCurX=-1 #The x coordinate position of the current box
boxCurY=-1 #The y coordinate position of the current box
iMap=() #Background box chart
#Initialize all background squares to -1, which means there is no square for ((i = 0; i <iTrayHeight * iTrayWidth; i++)); do iMap[$i]=-1; done
#The main function of the process that receives input function RunAsKeyReceiver()
{
local pidDisplayer key aKey sig cESC sTTY
pidDisplayer=$1
aKey=(0 0 0)
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;" $sigExit
#隐藏光标
echo -ne "\033[?25l"
while :
do
#读取输入。注-s不回显，-n读到一个字符立即返回
read -s -n 1 key
aKey[0]=${aKey[1]}
aKey[1]=${aKey[2]}
aKey[2]=$key
sig=0
#判断输入了何种键
if [[ $key == $cESC && ${aKey[1]} == $cESC ]]
then
#ESC键
MyExit
elif [[ ${aKey[0]} == $cESC && ${aKey[1]} == "[" ]]
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 [[ $sig != 0 ]]
then
#向另一进程发送消息
kill -$sig $pidDisplayer
fi
done}
#Resume before exit function MyExitNoSub()
{
local y
#恢复终端属性
stty $sTTY
((y = iTop + iTrayHeight + 4))
#显示光标
echo -e "\033[?25h\033[${y};0H"
exit}
function MyExit()
{ #Notify
that the display process needs to exit
kill -$sigExit $pidDisplayer
MyExitNoSub }
#The main function for processing display and game flow function RunAsDisplayer()
{
local sigThis
InitDraw
#挂载各种信号的处理函数
trap "sig=$sigRotate;" $sigRotate
trap "sig=$sigLeft;" $sigLeft
trap "sig=$sigRight;" $sigRight
trap "sig=$sigDown;" $sigDown
trap "sig=$sigAllDown;" $sigAllDown
trap "ShowExit;" $sigExit
while :
do
#根据当前的速度级iLevel不同，设定相应的循环的次数
for ((i = 0; i < 21 - iLevel; i++))
do
sleep 0.02
sigThis=$sig
sig=0
#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), test whether the moving box can be moved to the position (x, y), return 0 is OK, 1 cannot
function BoxMove()
{
local jixy xTest yTest
yTest=$1
xTest=$2
for ((j = 0; j <8; j += 2))
do
((i = j + 1))
((y = ${boxCur[$j]} + yTest))
((x = ${boxCur[ $i]) + xTest))
if (( y <0 || y >= iTrayHeight || x <0 || x >= iTrayWidth))
then
# hit the wall
return 1
fi
if ((${iMap[y * iTrayWidth + x]} != -1 ))
then #I
hit another block that already exists
return 1
fi
done
return 0;
}
#Put the currently moving square into the background square, #and
calculate the new score and speed level. (That is, once the box falls to the bottom)
function Box2Map()
{
local jixy xp yp line
#将当前移动中的方块放到背景方块中去
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
#根据消去的行数line计算分数和速度级
((x = iLeft + iTrayWidth * 2 + 7))
((y = iTop + 11))
((iScore += line * 2 - 1))
#显示新的分数
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))
#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 = 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}
#Falling a line function BoxDown()
{
local ys
((y = boxCurY + 1))
#new y coordinate if BoxMove $y $boxCurX #Test whether you can drop a line
then
s=" DrawCurBox 0" #Erasing the old box
(( boxCurY = y))
s="$s DrawCurBox 1" #Show the new drop-back square
echo -ne $s
else #Go
here, if you can't drop
Box2Map #Paste the currently moving box into the background box
RandomBox #Generate new The square
fi
}
#Left one column function BoxLeft()
{
local xs
((x = boxCurX-1))
if BoxMove $boxCurY $x
then
s = DrawCurBox 0
((boxCurX = x))
s=$s DrawCurBox 1
echo -ne $s
fi
}
#Right move a column function BoxRight()
{
local xs
((x = boxCurX + 1))
if BoxMove $boxCurY $x
then
s = DrawCurBox 0
((boxCurX = x))
s=$s DrawCurBox 1
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 = 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` #将旧的方块抹去
((boxCurY += iDown))
s=$s`DrawCurBox 1` #显示新的下落后的方块
echo -ne $s
Box2Map #将当前移动中的方块贴到背景方块中
RandomBox #产生新的方块 }
#Rotation box function BoxRotate()
{
local iCount iTestRotate boxTest jis
iCount=${countBox[$iBoxCurType]} #The number of styles that the current box can generate after rotation
#计算旋转后的新的样式
((iTestRotate = iBoxCurRotate + 1))
if ((iTestRotate >= iCount))
then
((iTestRotate = 0))
fi
#更新到新的样式, 保存老的样式(但不显示)
for ((j = 0, i = (${offsetBox[$iBoxCurType]} + $iTestRotate) * 8; j < 8; j++, i++))
do
boxTest[$j]=${boxCur[$j]}
boxCur[$j]=${box[$i]}
done
if BoxMove $boxCurY $boxCurX #测试旋转后是否有空间放的下
then
#抹去旧的方块
for ((j = 0; j < 8; j++))
do
boxCur[$j]=${boxTest[$j]}
done
s=`DrawCurBox 0`
#画上新的方块
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
#不能旋转，还是继续使用老的样式
for ((j = 0; j < 8; j++))
do
boxCur[$j]=${boxTest[$j]}
done
fi}
#DrawCurBox(bDraw), draw the currently moving box, bDraw is 1, draw on, bDraw is 0, erase the box.
function DrawCurBox()
{
local ijt 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, 光标到(x, y)处
s=$s"\033[${i};${t}H${sBox}"
done
s=$s"\033[0m"
echo -n $s }
#Update the new box function RandomBox()
{
local ijt
#更新当前移动的方块
iBoxCurType=${iBoxNewType}
iBoxCurRotate=${iBoxNewRotate}
cBoxCur=${cBoxNew}
for ((j = 0; j < ${#boxNew[@]}; j++))
do
boxCur[$j]=${boxNew[$j]}
done
#显示当前移动的方块
if (( ${#boxCur[@]} == 8 ))
then
#计算当前方块该从顶端哪一行"冒"出来
for ((j = 0, t = 4; j < 8; j += 2))
do
if ((${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))
#显示当前移动的方块
echo -ne `DrawCurBox 1`
#如果方块一出来就没处放，Game over!
if ! BoxMove $boxCurY $boxCurX
then
kill -$sigExit ${PPID}
ShowExit
fi
fi
#清除右边预显示的方块
for ((j = 0; j < 4; j++))
do
((i = iTop + 1 + j))
((t = iLeft + 2 * iTrayWidth + 7))
echo -ne "\033[${i};${t}H "
done
#随机产生新的方块
((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 % ${#colorTable[@]}]}))
#显示右边预显示的方块
echo -ne "\033[1m\033[7m\033[3${cBoxNew}m\033[4${cBoxNew}m"
for ((j = 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"}
# Initial Draw
function InitDraw ()
{
Clear
RandomBox # random block, then the right display window well and pre faster
RandomBox # randomly generated block, the right side of the display window of the pre-block is updated, the original block will begin to fall
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 + 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"
#显示"Score"和"Level"字样
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"}
#Display GameOVer when exiting!
function ShowExit()
{
local y
((y = iTrayHeight + iTrayTop + 3))
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
}
#The main game program starts here.
if [[ "$1" == "-h" || "$1" == "--help" ]]; then
Usage
elif [[ "$1" == "--version" ]]; then
echo "$APP_NAME $APP_VERSION"
elif [[ "$1" == "--show" ]]; then #When the
parameter --show is found, run the display function
RunAsDisplayer
else
bash $0 --show& #以Parameter--show will run the program again
RunAsKeyReceiver $! #The process number of the process generated by the above line is used as the parameter
fi