Created
December 7, 2017 20:26
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Snake game written in bash shell script
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#!/bin/bash | |
# author: sir@cmpwn.com | |
# Run ./snake.sh | |
# Arrow keys or wasd to move | |
c=`tput cols`;L=`tput lines` | |
let x=$c/2;let y=$L/2;d=0;le=3;t="$y;$x";i=0;j=0;S=0 | |
A(){ let i=($RANDOM%$c);let j=($RANDOM%$L);};A | |
B(){ printf $*;};C(){ B "\x1B[$1";};D(){ C "$1H";} | |
F(){ D "0;0";C 2J;C "?25h";printf "GAME OVER\nSCORE: $S\n";exit;};trap F INT | |
C ?25l;C 2J;da(){ D "$j;$i";echo "$1";} | |
G() { for n in $t; do D "$n";echo "$1";done;} | |
mt(){ t=`echo "$t"|cut -d' ' -f2-`;} | |
sc(){ D "0;0";echo "Score: $S"; } | |
gt() { t+=" $y;$x";};ct() { for n in $t; do [ "$y;$x" == "$n" ]&&F;done;} | |
M() { case $d in 0)let y--;;1)let x--;;2)let y++;;3)let x++;;esac | |
let x%=$c;let y%=$L;ct;[ "$y$x" == "$j$i" ]&&{ let le++;A;let S++;} | |
l=`tr -dc ' '<<<"$t"|wc -c`;gt;[ $l -gt $le ]&&mt;} | |
ky() { k=$1;read -sN1 -t 0.01 k1;read -sN1 -t 0.01 k2;read -sN1 -t 0.01 k3 | |
k+=${k1}${k2}${k3};case $k in w|$'\e[A'|$'\e0A')d=0;;a|$'\e[D'|$'\e0D')d=1;; | |
s|$'\e[B'|$'\e0B')d=2;;d|$'\e[C'|$'\e0C')d=3;;esac;} | |
while :;do da ' ';G ' ';M;da "@";G "#";sc;read -s -n 1 -t 0.1 k && ky "$k";done |
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