- [Bash] Snake
- 01 Dec 2011 10:52:21 pm
- Last edited by _player1537 on 03 Dec 2011 11:31:39 pm; edited 4 times in total
I got bored, and I've always wanted to write a game, that isn't text-based, in Bash, so I made this last night. Use the A and D keys to turn left and right (respectively), and press P to pause. To get the Play Again functionality to work, save the script and chmod it, then run it.
Code:
Code:
#!/bin/bash
function init() {
stty -echo -icanon time 0 min 0
echo -ne "\E[?25l"
clear
for((i=0;i<40;i++)); do
echoat 40 $i "x"
echoat $i 40 "x"
done
}
function readchar() {
dd bs=1 count=1 2>/dev/null
}
function randapple() {
x=$(($RANDOM % 39 + 1))
y=$(($RANDOM % 39 + 1))
echo "$x,$y"
}
function echoat() {
thisx="$1"
thisy="$2"
thismsg="$3"
echo -ne "\033[$thisy;$thisx""H$thismsg"
}
function end() {
stty sane
echo -ne "\E[?25h"
clear
}
init
snakex=( 1 1 1 1 )
snakey=( 1 2 3 4 )
x=1
y=5
apple=$(randapple)
snakelen=3
score=0
dirsx=( 1 0 -1 0 )
dirsy=( 0 1 0 -1 )
dir=0
while true; do
echoat $(echo $apple | sed "s/,/ /") "A"
echoat 42 5 "Score: $score"
echoat ${snakex[0]} ${snakey[0]} " "
for i in $(seq 0 $(($snakelen - 1))); do
if [ $x = ${snakex[i]} ] && [ $y = ${snakey[i]} ]; then
break 2;
fi
snakex[$i]=${snakex[$(($i + 1))]}
snakey[$i]=${snakey[$(($i + 1))]}
done
snakex[snakelen]=$x
snakey[snakelen]=$y
((x=x+${dirsx[dir]}))
((y=y+${dirsy[dir]}))
key=$(readchar)
case $key in
q) break;;
d) ((dir++));;
p) while [ ! "$(readchar)" = "p" ]; do true; done;;
a) ((dir--));;
*);;
esac
if [ $dir -gt 3 ] || [ $dir -lt 0 ]; then
((dir=(dir+4)%4))
fi
if [ $x -lt 1 ] || [ $x -gt 39 ] || [ $y -lt 1 ] || [ $y -gt 39 ]; then
break
fi
if [ "$x,$y" = "$apple" ]; then
((score++))
((snakelen++))
snakex[$snakelen]=${snakex[1]}
snakey[$snakelen]=${snakey[1]}
apple=$(randapple)
fi
echoat $x $y "X"
if [ $score -gt 5 ]; then
if [ $score -gt 8 ]; then
sleep .07
else
sleep .1$((4 - $(($score - 5)) / 2))
fi
else
sleep .$((3 - $score / 2))
fi
done
end
echo "You scored: $score"
read -p "Play again? [y/N] "
if echo "$REPLY" | egrep "[Yy]" &>/dev/null; then
exec "$0"
else
echo "Thanks for playing!"
fi
