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Code

cleanup; pjanzen@foatdi.harvard.edu

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This commit is contained in:
deraadt 1998-02-08 18:59:56 +00:00
parent 56bc77ee33
commit 6d5bb74f57
2 changed files with 58 additions and 35 deletions
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22
games/worm/worm.6
View File

@ -45,23 +45,19 @@
.Sh DESCRIPTION
In
.Nm worm,
you are a little worm, your body is the "o"'s on the screen
you are a little worm: your body is the "o"'s on the screen
and your head is the "@". You move with the hjkl keys (as in the game
snake). If you don't press any keys, you continue in the direction you
snake(6)). If you don't press any keys, you continue in the direction you
last moved. The upper case HJKL keys move you as if you had pressed
several (9 for HL and 5 for JK) of the corresponding lower case key
(unless you run into a digit, then it stops).
several of the corresponding lower case key (9 for HL and 5 for JK, or
until you run into a digit, whichever comes first).
.Pp
On the screen you will see a digit, if your worm eats the digit is will
grow longer, the actual amount longer depends on which digit it was
that you ate. The object of the game is to see how long you can make
the worm grow.
On the screen you will see a digit. If your worm eats the digit it will
grow longer by that number of "o"'s. The object of the game is to see how
long you can make the worm grow.
.Pp
The game ends when the worm runs into either the sides of the screen,
The game ends when the worm runs into either the sides of the screen
or itself. The current score (how much the worm has grown) is kept in
the upper left corner of the screen.
the upper right corner of the screen.
.Pp
The optional argument, if present, is the initial length of the worm.
.Sh BUGS
If the initial length of the worm is set to less than one or more
than 75, various strange things happen.

71
games/worm/worm.c
View File

@ -57,6 +57,7 @@ static char rcsid[] = "$NetBSD: worm.c,v 1.7 1995/04/29 01:12:41 mycroft Exp $";
#include <signal.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#define newlink() (struct body *) malloc(sizeof (struct body));
#define HEAD '@'
@ -81,8 +82,19 @@ int start_len = LENGTH;
char lastch;
char outbuf[BUFSIZ];
void leave(), wake(), suspend();
void crash __P((void));
void display __P((struct body *, char));
void leave __P((int));
void life __P((void));
void newpos __P((struct body *));
void process __P((char));
void prize __P((void));
int rnd __P((int));
void setup __P((void));
void suspend __P((int));
void wake __P((int));
int
main(argc, argv)
int argc;
char **argv;
@ -93,12 +105,8 @@ main(argc, argv)
setegid(getgid());
setgid(getgid());
if (argc == 2)
start_len = atoi(argv[1]);
if ((start_len <= 0) || (start_len > 500))
start_len = LENGTH;
setbuf(stdout, outbuf);
srand(getpid());
srandom(getpid());
signal(SIGALRM, wake);
signal(SIGINT, leave);
signal(SIGQUIT, leave);
@ -108,6 +116,10 @@ main(argc, argv)
noecho();
slow = (baudrate() <= 1200);
clear();
if (argc == 2)
start_len = atoi(argv[1]);
if ((start_len <= 0) || (start_len > ((LINES-3) * (COLS-2)) / 3))
start_len = LENGTH;
stw = newwin(1, COLS-1, 0, 0);
tv = newwin(LINES-1, COLS-1, 1, 0);
box(tv, '*', '*');
@ -136,28 +148,36 @@ main(argc, argv)
}
}
void
life()
{
register struct body *bp, *np;
register int i;
register int i,j = 1;
head = newlink();
head->x = start_len+2;
head->y = 12;
head->x = start_len % (COLS-5) + 2;
head->y = LINES / 2;
head->next = NULL;
display(head, HEAD);
for (i = 0, bp = head; i < start_len; i++, bp = np) {
np = newlink();
np->next = bp;
bp->prev = np;
np->x = bp->x - 1;
np->y = bp->y;
if (((bp->x <= 2) && (j == 1)) || ((bp->x >= COLS-4)) && (j == -1)) {
j *= -1;
np->x = bp->x;
np->y = bp->y + 1;
} else {
np->x = bp->x - j;
np->y = bp->y;
}
display(np, BODY);
}
tail = np;
tail->prev = NULL;
}
void
display(pos, chr)
struct body *pos;
char chr;
@ -167,25 +187,30 @@ char chr;
}
void
leave()
leave(dummy)
int dummy;
{
endwin();
exit(0);
}
void
wake()
wake(dummy)
int dummy;
{
signal(SIGALRM, wake);
fflush(stdout);
process(lastch);
}
int
rnd(range)
int range;
{
return abs((rand()>>5)+(rand()>>5)) % range;
return random() % range;
}
void
newpos(bp)
struct body * bp;
{
@ -196,6 +221,7 @@ struct body * bp;
} while(winch(tv) != ' ');
}
void
prize()
{
int value;
@ -206,6 +232,7 @@ prize()
wrefresh(tv);
}
void
process(ch)
char ch;
{
@ -226,7 +253,7 @@ char ch;
case 'K': y--; running = RUNLEN/2; ch = tolower(ch); break;
case 'L': x++; running = RUNLEN; ch = tolower(ch); break;
case '\f': setup(); return;
case CNTRL('Z'): suspend(); return;
case CNTRL('Z'): suspend(0); return;
case CNTRL('C'): crash(); return;
case CNTRL('D'): crash(); return;
default: if (! running) alarm(1);
@ -250,7 +277,7 @@ char ch;
prize();
score += growing;
running = 0;
wmove(stw, 0, 68);
wmove(stw, 0, COLS - 12);
wprintw(stw, "Score: %3d", score);
wrefresh(stw);
}
@ -269,22 +296,21 @@ char ch;
alarm(1);
}
void
crash()
{
sleep(2);
clear();
move(23, 0);
refresh();
endwin();
printf("Well, you ran into something and the game is over.\n");
printf("Your final score was %d\n", score);
leave();
exit(0); /* leave() calls endwin(), which would hose the printf()'s */
}
void
suspend()
suspend(dummy)
int dummy;
{
char *sh;
move(LINES-1, 0);
refresh();
endwin();
@ -296,6 +322,7 @@ suspend()
setup();
}
void
setup()
{
clear();