#! /bin/bash
#下面是游戏界面的宽和高
# the width
with=42
# the height
height=22
#这个是游戏运行区域
# area
area=(
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9
)
#bool
false=0
true=1
#贪吃蛇的一些信息
#snake info
head=47
tail=45
originPos=(45 46 47)
snakeBody=2
snakeFood=3
curPos=(${originPos[*]})
#game logic val
speed=0.2
foodPos=50
left=2
right=-2
up=3
down=-3
moveDirection=$right
eat=$true
#game info
side=$$
main=$!
#这个是开始时的界面
#start show interface
function startShowInterface()
{
seconds=$1
printf "\e[1;42m"
printf "******************************************\n"
for ((i=0; i<10; i++))
do
printf "* *\n"
done
printf "*******\e[1;31msnake start after: $seconds seconds\e[0m\e[1;42m*******\n"
for ((i=0; i<10; i++))
do
printf "* *\n"
done
printf "******************************************\n"
printf "\e[0m"
}
#start show
function startShow()
{
seconds=1;
while [[ $seconds -gt -1 ]];
do
clear;
startShowInterface $seconds;
sleep 1;
let seconds--;
done
}
startShow;
#这个是游戏显示界面
# game main inteface
function gameMainInterface
{
clear;
pos=0
echo -e "\e[1;42m"
for data in ${area[@]};
do
case $data in
[9])
printf "\n"
;;
[1])
printf "#"
;;
[0])
printf " "
;;
[$snakeBody])
printf "\e[1;31m"
if [[ $pos = $head ]]; then
printf "@"
else
printf "*"
fi
printf "\e[0m\e[1;42m"
;;
[$snakeFood])
printf "\e[1;34m&\e[0m\e[1;42m"
;;
esac
let pos++
done
echo -e "\e[0m"
}
#initinal snake body and pos
function initSnake()
{
for data in ${originPos[@]};
do
area[$data]=$snakeBody
done
}
initSnake;
#绘制贪吃蛇
#draw snake
function drawSnake()
{
for data in ${originPos[@]};
do
area[$data]=0
done
for data in ${curPos[@]};
do
area[$data]=$snakeBody
done
}
#随机生成食物位置
#generate food
function generateFood()
{
if [[ $eat = $false ]]; then
return
fi
done=$false
while [[ $done = $false ]];
do
newFoodPos=$(( RANDOM%$(( $(( $with-1 ))*$(( $height-1 )) )) ))
[[ ${area[$newFoodPos]} = 0 ]] && area[$foodPos]=0 && foodPos=$newFoodPos && (( area[$foodPos]=$snakeFood )) && done=$true && eat=$false
done
}
#贪吃蛇移动的算法，用的一维数组，我也就这样来实现了
#move
function snakeMove()
{
originPos=(${curPos[*]})
length=${#curPos[*]}
head=${curPos[$(( $length-1 ))]}
case $moveDirection in
$left)
let head--
[[ $(( $(( $head-2 ))%$with )) -eq 0 ]] && kill -35 $side
;;
$right)
let head++
[[ $(( $head%$with )) -eq 0 ]] && kill -35 $side
;;
$up)
let head=head-with
let head--
[[ $head -lt $with ]] && kill -35 $side
;;
$down)
let head=head+with
let head++
[[ $head -gt $(( $with*$(( $height-1 )) )) ]] && kill -35 $side
;;
esac
if [[ $head -eq $foodPos ]]; then
curPos[length]=$head
eat=$true
else
for ((i=0; i<$((length-1)); i++));
do
curPos[i]=${curPos[$((i+1))]}
done
curPos[$((length-1))]=$head
fi
}
#游戏运行的进程，游戏主逻辑都在这里了
#main interface
function mainInterface
{
trap "moveDirection=$left" 36
trap "moveDirection=$right" 37
trap "moveDirection=$up" 38
trap "moveDirection=$down" 39
run=$true
while [[ $run -eq $true ]];
do
generateFood;
snakeMove;
drawSnake;
clear;
gameMainInterface;
sleep $speed
done
}
mainInterface &
main=$!
# move snake
function moveDirectionUpdate()
{
if [[ $(( $1+$2 )) -eq 0 || $1 -eq $2 ]];then
return;
fi
case $2 in
$left)
kill -36 $main
;;
$right)
kill -37 $main
;;
$up)
kill -38 $main
;;
$down)
kill -39 $main
;;
esac
}
#监听上下左右键的输入
#watch input
function watchInput()
{
curDirection=$left
preDirection=$curDirection
while :;
do
read -s -n 1 op;
[[ $op = "q" ]] && kill -9 $! && return;
[[ $op = "A" ]] && preDirection=$curDirection && curDirection=$up && moveDirectionUpdate $preDirection $curDirection;
[[ $op = "B" ]] && preDirection=$curDirection && curDirection=$down && moveDirectionUpdate $preDirection $curDirection;
[[ $op = "C" ]] && preDirection=$curDirection && curDirection=$right && moveDirectionUpdate $preDirection $curDirection;
[[ $op = "D" ]] && preDirection=$curDirection && curDirection=$left && moveDirectionUpdate $preDirection $curDirection;
done
}
watchInput;
#game over
function gameOver()
{
kill -9 $main
echo "game over."
}
trap "gameOver" 35shell脚本贪吃蛇
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转载自blog.51cto.com/15082948/2589762
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