代码： 全选
#!/bin/bash
#O_O learn2
#fvw vimtexhappy@gmail.com
#setting
game_with=15
game_height=25
game_top=2
game_left=10
game_no_wall=1
#tmp
game_id=0
game_sig=0
game_start=0
#Signal
sig_up=25
sig_left=26
sig_right=27
sig_down=28
sig_exit=30
#direction
dirt_up=0
dirt_down=1
dirt_left=2
dirt_right=3
#map data
var_init(){
usr_level=0
usr_score=0
snake_color=4
snake_head=0
snake_end=0
snake_len=1
snake_cur_x=0
snake_cur_y=0
snake_move_dirt=0
dot_color=3
dot_cur_x=0
dot_cur_y=0
}
show_frame() {
#make game frame
local i x1 x2 y1 y2
((x1 = game_left))
((y1 = game_top))
((y2 = game_top+game_height+1))
for ((i=0; i<game_with+2; i++));do
echo -ne "\033[$y1;${x1}H\033[44;32m==\033[0m"
echo -ne "\033[$y2;${x1}H\033[44;32m==\033[0m"
((x1 += 2))
done
((x1 = game_left))
((x2 = game_left+game_with*2+2))
((y1 = game_top+1))
for ((i=0; i<game_height; i++));do
echo -ne "\033[$y1;${x1}H\033[44;32m||\033[0m"
echo -ne "\033[$y1;${x2}H\033[44;32m||\033[0m"
((y1++))
done
}
show_txt() {
local x y
local score level
score=${1:-$usr_score}
level=${2:-$usr_level}
((x = game_left + game_with*2 + 4 + 6))
((y = game_top + game_height/3))
echo -ne "\033[${y};${x}H\033[40;36mScore\033[0m"
((y++))
echo -ne "\033[${y};${x}H\033[40;37m${score}\033[0m"
((y+=2))
echo -ne "\033[${y};${x}H\033[40;36mLevel\033[0m"
((y++))
echo -ne "\033[${y};${x}H\033[40;37m${level}\033[0m"
}
show_end_text(){
local x y
len=${#1}
((x = game_left + game_with-len/2))
((y = game_top + game_height/2 - 1))
echo -ne "\033[${y};${x}H$1"
game_start=0
}
show_dot() {
local show index x y color
show=$1
x=${2:-$snake_cur_x}
y=${3:-$snake_cur_y}
color=${4:-$snake_color}
((x= game_left + 2 + x* 2 ))
((y= game_top + 1 + y))
echo -ne "\033[${y};${x}H"
if (($show == 1)); then
echo -ne "\033[1;7;4${color};3${color}m[]\033[0m"
else
echo -ne " "
fi
}
make_map() {
local i x y
((x = game_left + 2))
((y = game_top + 1))
for ((i=0; i<game_height; i++));do
echo -ne "\033[$((y+i));${x}H"
for ((j=0; j<game_with; j++));do
echo -ne " "
done
done
snake_color=4
snake_head=0
snake_end=0
snake_len=1
((snake_cur_x=RANDOM%(game_with/2)+game_with/4))
((snake_cur_y=RANDOM%(game_height/2)+game_height/4))
snakes=($snake_cur_x $snake_cur_y)
((snake_move_dirt=RANDOM % 4))
show_dot 1
}
dot_new(){
local dot_x dot_y
local max_try i
max_try=200
while ((max_try--));do
((dot_x=RANDOM%game_with))
((dot_y=RANDOM%game_height))
for ((i=snake_end; i<=snake_head; i+=2));do
((snakes[i]==dot_x && snakes[i+1]==dot_y)) && break
done
((i>snake_head)) && break
done
if ((max_try>=0));then
dot_cur_x=$dot_x
dot_cur_y=$dot_y
show_dot 1 $dot_x $dot_y $dot_color
else
show_end_text "Very good!"
fi
}
snake_go() {
local go_x go_y
go_x=$snake_cur_x
go_y=$snake_cur_y
try_move=$1
case $try_move in
$dirt_up) ((go_y--));;
$dirt_down) ((go_y++));;
$dirt_left) ((go_x--));;
$dirt_right) ((go_x++));;
esac
if ((snake_len != 1)) && ((snakes[snake_head-2]==go_x && snakes[snake_head-1]== go_y));then
#don't move
return
fi
#hold move dirt
snake_move_dirt=$try_move
if ((game_no_wall == 1));then
((go_x<0)) && ((go_x+=game_with))
((go_x>=game_with)) && ((go_x-=game_with))
((go_y<0)) && ((go_y+=game_height))
((go_y>=game_height)) && ((go_y-=game_height))
else
if ((go_x<0 || go_x>=game_with || go_y<0 || go_y>=game_height));then
show_end_text "Game over!"
return
fi
fi
#local i index
##snake_end over max->0 is ok too.
#((index=snake_end))
#for ((i=0; i<snake_len; i++));do
#((snakes[index]==go_x && snakes[index+1]==go_y)) && break
#((index+=2))
#done
#if ((i<snake_len));then
#show_end_text "Game over!"
#return
#fi
#array index very long 2^6x
local i
for ((i=snake_end; i<=snake_head; i+=2));do
((snakes[i]==go_x && snakes[i+1]==go_y)) && break
done
if ((i<=snake_head));then
show_end_text "Game over!"
return
fi
((snake_head+=2))
snakes[snake_head]=$go_x
snakes[snake_head+1]=$go_y
snake_cur_x=$go_x
snake_cur_y=$go_y
show_dot 1
if ((go_x == dot_cur_x && go_y == dot_cur_y));then
((snake_len++))
((usr_score++))
((usr_level=usr_score/10))
((usr_level>20)) && ((usr_level=20))
show_txt
dot_new
else
show_dot 0 ${snakes[$snake_end]} $((snakes[snake_end+1]))
unset snakes[snake_end]
unset snakes[$((snake_end+1))]
((snake_end+=2))
fi
}
init_game(){
clear
var_init
show_frame
show_txt
make_map
dot_new
}
exit_game(){
exit 0
}
game_routine(){
local i
trap "game_sig=$sig_down" $sig_down
trap "game_sig=$sig_left" $sig_left
trap "game_sig=$sig_right" $sig_right
trap "game_sig=$sig_up" $sig_up
trap "game_sig=$sig_exit" $sig_exit
init_game
while ((game_sig == 0));do
sleep 0.02
done
game_start=1
while :;do
while ((game_start));do
for ((i=20-usr_level; i>=0; i--));do
case $game_sig in
$sig_down ) snake_go $dirt_down;;
$sig_left ) snake_go $dirt_left;;
$sig_right) snake_go $dirt_right;;
$sig_up ) snake_go $dirt_up;;
$sig_exit ) exit_game;;
esac
if ((game_sig != 0));then
game_sig=0
break
fi
sleep 0.02
done
if ((i<0));then
snake_go $snake_move_dirt
fi
done
while ((game_sig == 0));do
sleep 0.02
done
game_start=1
init_game
done
}
key_exit(){
stty $tty
echo -ne "\033[?25h"
kill -$sig_exit $game_pid
clear
exit
}
key_rountine(){
game_pid=$1
tty=$(stty -g)
echo -ne "\033[?25l"
trap "key_exit;" INT TERM
trap "key_exit;" $sig_exit
local key keys sig
local ESC
#ESC=$(echo -ne "\033")
ESC=$'\033'
keys=(0 0 0)
while :;do
sig=0
read -s -n 1 key
keys[0]=${keys[1]}
keys[1]=${keys[2]}
keys[2]=$key
if [[ ${keys[0]} == $ESC && ${keys[1]} == "[" ]] ;then
case ${keys[2]} in
"A") sig=$sig_up;;
"B") sig=$sig_down;;
"D") sig=$sig_left;;
"C") sig=$sig_right;;
esac
elif [[ ${keys[2]} == "q" ]];then
key_exit
fi
if (($sig != 0));then
kill -$sig $1
fi
done
}
if [ "$1" == "game" ] ;then
game_routine
else
bash $0 game &
key_rountine $!
fi
