Exemplo n.º 1
0
int
main(int ac, char *av[])
{
	int			f_usage = 0, f_list = 0, f_showscore = 0;
	int			f_printpath = 0;
	const char		*file = NULL;
	char			*name, *ptr, *seed;
	struct sigaction	sa;
	gid_t			gid;
#ifdef BSD
	struct itimerval	itv;
#endif

	open_score_file();

	/* revoke privs */
	gid = getgid();
	setresgid(gid, gid, gid);

	start_time = time(0);
	makenoise = 1;
	seed = NULL;

	name = *av++;
	while (*av) {
#ifndef SAVEDASH
		if (**av == '-') 
			++*av;
		else
			break;
#endif
		ptr = *av++;
		while (*ptr) {
			switch (*ptr) {
			case '?':
			case 'u':
				f_usage++;
				break;
			case 'l':
				f_list++;
				break;
			case 's':
			case 't':
				f_showscore++;
				break;
			case 'p':
				f_printpath++;
				break;
			case 'q':
				makenoise = 0;
				break;
			case 'r':
				seed = *av;
				av++;
				break;
			case 'f':
			case 'g':
				file = *av;
				av++;
				break;
			default: 
				warnx("unknown option '%c'", *ptr);
				f_usage++;
				break;
			}
			ptr++;
		}
	}
	if (seed != NULL)
		srandom(atol(seed));
	else
		srandomdev();

	if (f_usage)
		fprintf(stderr, 
		    "usage: %s [-lpqstu?] [-f game] [-g game] [-r seed]\n",
		    name);
	if (f_showscore)
		log_score(1);
	if (f_list)
		list_games();
	if (f_printpath) {
		size_t	len;
		char	buf[256];

		strlcpy(buf, _PATH_GAMES, sizeof buf);
		len = strlen(buf);
		if (len != 0 && buf[len - 1] == '/')
			buf[len - 1] = '\0';
		puts(buf);
	}
		
	if (f_usage || f_showscore || f_list || f_printpath)
		exit(0);

	if (file == NULL)
		file = default_game();
	else
		file = okay_game(file);

	if (file == NULL || read_file(file) < 0)
		exit(1);

	setup_screen(sp);

	addplane();

	signal(SIGINT, quit);
	signal(SIGQUIT, quit);
#ifdef BSD
	signal(SIGTSTP, SIG_IGN);
	signal(SIGSTOP, SIG_IGN);
#endif
	signal(SIGHUP, log_score_quit);
	signal(SIGTERM, log_score_quit);

	tcgetattr(fileno(stdin), &tty_start);
	tty_new = tty_start;
	tty_new.c_lflag &= ~(ICANON|ECHO);
	tty_new.c_iflag |= ICRNL;
	tty_new.c_cc[VMIN] = 1;
	tty_new.c_cc[VTIME] = 0;
	tcsetattr(fileno(stdin), TCSADRAIN, &tty_new);

	memset(&sa, 0, sizeof sa);
	sa.sa_handler = update;
	sigemptyset(&sa.sa_mask);
	sigaddset(&sa.sa_mask, SIGALRM);
	sigaddset(&sa.sa_mask, SIGINT);
	sa.sa_flags = 0;
	sigaction(SIGALRM, &sa, (struct sigaction *)0);

#ifdef BSD
	itv.it_value.tv_sec = 0;
	itv.it_value.tv_usec = 1;
	itv.it_interval.tv_sec = sp->update_secs;
	itv.it_interval.tv_usec = 0;
	setitimer(ITIMER_REAL, &itv, NULL);
#endif
#ifdef SYSV
	alarm(sp->update_secs);
#endif

	for (;;) {
		if (getcommand() != 1)
			planewin();
		else {
#ifdef BSD
			itv.it_value.tv_sec = 0;
			itv.it_value.tv_usec = 0;
			setitimer(ITIMER_REAL, &itv, NULL);
#endif
#ifdef SYSV
			alarm(0);
#endif

			update(0);

#ifdef BSD
			itv.it_value.tv_sec = sp->update_secs;
			itv.it_value.tv_usec = 0;
			itv.it_interval.tv_sec = sp->update_secs;
			itv.it_interval.tv_usec = 0;
			setitimer(ITIMER_REAL, &itv, NULL);
#endif
#ifdef SYSV
			alarm(sp->update_secs);
#endif
		}
	}
}
Exemplo n.º 2
0
void
update(int dummy)
{
	int	i, dir_diff, unclean;
	PLANE	*pp, *p1, *p2;

	clck++;

	erase_all();

	/* put some planes in the air */
	do {
		unclean = 0;
		for (pp = ground.head; pp != NULL; pp = pp->next) {
			if (pp->new_altitude > 0) {
				delete(&ground, pp);
				append(&air, pp);
				unclean = 1;
				break;
			}
		}
	} while (unclean);

	/* do altitude change and basic movement */
	for (pp = air.head; pp != NULL; pp = pp->next) {
		/* type 0 only move every other turn */
		if (pp->plane_type == 0 && clck & 1)
			continue;

		pp->fuel--;
		if (pp->fuel < 0)
			loser(pp, "ran out of fuel.");

		pp->altitude += SGN(pp->new_altitude - pp->altitude);

		if (!pp->delayd) {
			dir_diff = pp->new_dir - pp->dir;
			/*
			 * Allow for circle commands
			 */
			if (pp->new_dir >= 0 && pp->new_dir < MAXDIR) {
				if (dir_diff > MAXDIR/2)
					dir_diff -= MAXDIR;
				else if (dir_diff < -(MAXDIR/2))
					dir_diff += MAXDIR;
			}
			if (dir_diff > 2)
				dir_diff = 2;
			else if (dir_diff < -2)
				dir_diff = -2;
			pp->dir += dir_diff;
			if (pp->dir >= MAXDIR)
				pp->dir -= MAXDIR;
			else if (pp->dir < 0)
				pp->dir += MAXDIR;
		}
		pp->xpos += displacement[pp->dir].dx;
		pp->ypos += displacement[pp->dir].dy;

		if (pp->delayd && pp->xpos == sp->beacon[pp->delayd_no].x &&
		    pp->ypos == sp->beacon[pp->delayd_no].y) {
			pp->delayd = 0;
			if (pp->status == S_UNMARKED)
				pp->status = S_MARKED;
		}

		switch (pp->dest_type) {
		case T_AIRPORT:
			if (pp->xpos == sp->airport[pp->dest_no].x &&
			    pp->ypos == sp->airport[pp->dest_no].y &&
			    pp->altitude == 0) {
				if (pp->dir != sp->airport[pp->dest_no].dir)
				    loser(pp, "landed in the wrong direction.");
				else {
				    pp->status = S_GONE;
				    continue;
				}
			}
			break;
		case T_EXIT:
			if (pp->xpos == sp->exit[pp->dest_no].x &&
			    pp->ypos == sp->exit[pp->dest_no].y) {
			    	if (pp->altitude != 9)
				    loser(pp, "exited at the wrong altitude.");
				else {
				    pp->status = S_GONE;
				    continue;
				}
			}
			break;
		default:
			loser(pp, "has a bizarre destination, get help!");
		}
		if (pp->altitude > 9)
			/* "this is impossible" */
			loser(pp, "exceeded flight ceiling.");
		if (pp->altitude <= 0) {
			for (i = 0; i < sp->num_airports; i++)
				if (pp->xpos == sp->airport[i].x &&
				    pp->ypos == sp->airport[i].y) {
					if (pp->dest_type == T_AIRPORT)
					    loser(pp, 
						"landed at the wrong airport.");
					else
					    loser(pp, 
						"landed instead of exited.");
				}
			loser(pp, "crashed on the ground.");
		}
		if (pp->xpos < 1 || pp->xpos >= sp->width - 1 ||
		    pp->ypos < 1 || pp->ypos >= sp->height - 1) {
			for (i = 0; i < sp->num_exits; i++)
				if (pp->xpos == sp->exit[i].x &&
				    pp->ypos == sp->exit[i].y) {
					if (pp->dest_type == T_EXIT)
					    loser(pp, 
						"exited via the wrong exit.");
					else
					    loser(pp, 
						"exited instead of landed.");
				}
			loser(pp, "illegally left the flight arena.");
		}
	}

	/*
	 * Traverse the list once, deleting the planes that are gone.
	 */
	for (pp = air.head; pp != NULL; pp = p2) {
		p2 = pp->next;
		if (pp->status == S_GONE) {
			safe_planes++;
			delete(&air, pp);
		}
	}

	draw_all();

	for (p1 = air.head; p1 != NULL; p1 = p1->next)
		for (p2 = p1->next; p2 != NULL; p2 = p2->next)
			if (too_close(p1, p2, 1)) {
				static char	buf[80];

				(void)snprintf(buf, sizeof buf,
				    "collided with plane '%c'.",
				    name(p2));
				loser(p1, buf);
			}
	/*
	 * Check every other update.  Actually, only add on even updates.
	 * Otherwise, prop jobs show up *on* entrance.  Remember that
	 * we don't update props on odd updates.
	 */
	if ((atcrandom() % sp->newplane_time) == 0)
		addplane();
}
Exemplo n.º 3
0
int
main(int argc __unused, char *argv[])
{
	int                     seed = 0;
	int			f_usage = 0, f_list = 0, f_showscore = 0;
	int			f_printpath = 0;
	const char		*file = NULL;
	char			*p_name, *ptr;
	struct itimerval	itv;

	/* Open the score file then revoke setgid privileges */
	open_score_file();
	setregid(getgid(), getgid());

	start_time = time(0);

	p_name = *argv++;
	while (*argv) {
#ifndef SAVEDASH
		if (**argv == '-')
			++*argv;
		else
			break;
#endif
		ptr = *argv++;
		while (*ptr) {
			switch (*ptr) {
			case '?':
			case 'u':
				f_usage++;
				break;
			case 'l':
				f_list++;
				break;
			case 's':
			case 't':
				f_showscore++;
				break;
			case 'p':
				f_printpath++;
				break;
			case 'r':
				srandom(atoi(*argv));
				seed = 1;
				argv++;
				break;
			case 'f':
			case 'g':
				file = *argv;
				argv++;
				break;
			default:
				fprintf(stderr, "Unknown option '%c'\n", *ptr);
				f_usage++;
				break;
			}
			ptr++;
		}
	}
	if (!seed)
		srandomdev();

	if (f_usage)
		fprintf(stderr,
		    "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n",
			p_name);
	if (f_showscore)
		log_score(1);
	if (f_list)
		list_games();
	if (f_printpath) {
		char	buf[100];

		strcpy(buf, _PATH_GAMES);
		buf[strlen(buf) - 1] = '\0';
		puts(buf);
	}

	if (f_usage || f_showscore || f_list || f_printpath)
		exit(0);

	if (file == NULL)
		file = default_game();
	else
		file = okay_game(file);

	if (file == NULL || read_file(file) < 0)
		exit(1);

	init_gr();
	setup_screen(sp);

	addplane();

	signal(SIGINT, (sig_t)quit);
	signal(SIGQUIT, (sig_t)quit);
	signal(SIGTSTP, SIG_IGN);
	signal(SIGSTOP, SIG_IGN);
	signal(SIGHUP, (sig_t)log_score);
	signal(SIGTERM, (sig_t)log_score);

	tcgetattr(fileno(stdin), &tty_start);
	bcopy(&tty_start, &tty_new, sizeof(tty_new));
	tty_new.c_lflag &= ~(ICANON|ECHO);
	tty_new.c_cc[VMIN] = 1;
	tty_new.c_cc[VTIME] = 0;
	tcsetattr(fileno(stdin), TCSANOW, &tty_new);
	signal(SIGALRM, (sig_t)update);

	itv.it_value.tv_sec = 0;
	itv.it_value.tv_usec = 1;
	itv.it_interval.tv_sec = sp->update_secs;
	itv.it_interval.tv_usec = 0;
	setitimer(ITIMER_REAL, &itv, NULL);

	for (;;) {
		if (getcommand() != 1)
			planewin();
		else {
			itv.it_value.tv_sec = 0;
			itv.it_value.tv_usec = 0;
			setitimer(ITIMER_REAL, &itv, NULL);

			update();

			itv.it_value.tv_sec = sp->update_secs;
			itv.it_value.tv_usec = 0;
			itv.it_interval.tv_sec = sp->update_secs;
			itv.it_interval.tv_usec = 0;
			setitimer(ITIMER_REAL, &itv, NULL);
		}
	}
}