Home | History | Annotate | Line # | Download | only in huntd
driver.c revision 1.5
      1 /*	$NetBSD: driver.c,v 1.5 1997/10/20 00:37:16 lukem Exp $	*/
      2 /*
      3  *  Hunt
      4  *  Copyright (c) 1985 Conrad C. Huang, Gregory S. Couch, Kenneth C.R.C. Arnold
      5  *  San Francisco, California
      6  */
      7 
      8 #include <sys/cdefs.h>
      9 #ifndef lint
     10 __RCSID("$NetBSD: driver.c,v 1.5 1997/10/20 00:37:16 lukem Exp $");
     11 #endif /* not lint */
     12 
     13 # include	<sys/ioctl.h>
     14 # include	<sys/stat.h>
     15 # include	<sys/time.h>
     16 # include	<err.h>
     17 # include	<errno.h>
     18 # include	<signal.h>
     19 # include	<stdlib.h>
     20 # include	<unistd.h>
     21 # include	"hunt.h"
     22 
     23 # ifndef pdp11
     24 # define	RN	(((Seed = Seed * 11109 + 13849) >> 16) & 0xffff)
     25 # else
     26 # define	RN	((Seed = Seed * 11109 + 13849) & 0x7fff)
     27 # endif
     28 
     29 int	Seed = 0;
     30 
     31 
     32 SOCKET	Daemon;
     33 char	*First_arg;		/* pointer to argv[0] */
     34 char	*Last_arg;		/* pointer to end of argv/environ */
     35 # ifdef	INTERNET
     36 int	Test_socket;		/* test socket to answer datagrams */
     37 FLAG	inetd_spawned;		/* invoked via inetd */
     38 FLAG	standard_port = TRUE;	/* true if listening on standard port */
     39 u_short	sock_port;		/* port # of tcp listen socket */
     40 u_short	stat_port;		/* port # of statistics tcp socket */
     41 # define	DAEMON_SIZE	(sizeof Daemon)
     42 # else
     43 # define	DAEMON_SIZE	(sizeof Daemon - 1)
     44 # endif
     45 
     46 static	void	clear_scores __P((void));
     47 static	int	havechar __P((PLAYER *));
     48 static	void	init __P((void));
     49 	int	main __P((int, char *[], char *[]));
     50 static	void	makeboots __P((void));
     51 static	void	send_stats __P((void));
     52 static	void	zap __P((PLAYER *, FLAG));
     53 
     54 
     55 /*
     56  * main:
     57  *	The main program.
     58  */
     59 int
     60 main(ac, av, ep)
     61 	int	ac;
     62 	char	**av, **ep;
     63 {
     64 	PLAYER	*pp;
     65 	int	had_char;
     66 # ifdef INTERNET
     67 	u_short	msg;
     68 	short	port_num, reply;
     69 	int	namelen;
     70 	SOCKET	test;
     71 # endif
     72 	static fd_set	read_fds;
     73 	static FLAG	first = TRUE;
     74 	static FLAG	server = FALSE;
     75 	extern int	optind;
     76 	extern char	*optarg;
     77 	int		c;
     78 	static struct timeval	linger = {	90, 0	};
     79 
     80 	First_arg = av[0];
     81 	if (ep == NULL || *ep == NULL)
     82 		ep = av + ac;
     83 	while (*ep)
     84 		ep++;
     85 	Last_arg = ep[-1] + strlen(ep[-1]);
     86 
     87 	while ((c = getopt(ac, av, "sp:")) != -1) {
     88 		switch (c) {
     89 		  case 's':
     90 			server = TRUE;
     91 			break;
     92 # ifdef INTERNET
     93 		  case 'p':
     94 			standard_port = FALSE;
     95 			Test_port = atoi(optarg);
     96 			break;
     97 # endif
     98 		  default:
     99 erred:
    100 			fprintf(stderr, "Usage: %s [-s] [-p port]\n", av[0]);
    101 			exit(1);
    102 		}
    103 	}
    104 	if (optind < ac)
    105 		goto erred;
    106 
    107 	init();
    108 
    109 
    110 again:
    111 	do {
    112 		read_fds = Fds_mask;
    113 		errno = 0;
    114 		while (select(Num_fds, &read_fds, NULL, NULL, NULL) < 0)
    115 		{
    116 			if (errno != EINTR)
    117 # ifdef LOG
    118 				syslog(LOG_WARNING, "select: %m");
    119 # else
    120 				warn("select");
    121 # endif
    122 			errno = 0;
    123 		}
    124 		Have_inp = read_fds;
    125 # ifdef INTERNET
    126 		if (FD_ISSET(Test_socket, &read_fds)) {
    127 			namelen = DAEMON_SIZE;
    128 			port_num = htons(sock_port);
    129 			(void) recvfrom(Test_socket, (char *) &msg, sizeof msg,
    130 				0, (struct sockaddr *) &test, &namelen);
    131 			switch (ntohs(msg)) {
    132 			  case C_MESSAGE:
    133 				if (Nplayer <= 0)
    134 					break;
    135 				reply = htons((u_short) Nplayer);
    136 				(void) sendto(Test_socket, (char *) &reply,
    137 					sizeof reply, 0,
    138 					(struct sockaddr *) &test, DAEMON_SIZE);
    139 				break;
    140 			  case C_SCORES:
    141 				reply = htons(stat_port);
    142 				(void) sendto(Test_socket, (char *) &reply,
    143 					sizeof reply, 0,
    144 					(struct sockaddr *) &test, DAEMON_SIZE);
    145 				break;
    146 			  case C_PLAYER:
    147 			  case C_MONITOR:
    148 				if (msg == C_MONITOR && Nplayer <= 0)
    149 					break;
    150 				reply = htons(sock_port);
    151 				(void) sendto(Test_socket, (char *) &reply,
    152 					sizeof reply, 0,
    153 					(struct sockaddr *) &test, DAEMON_SIZE);
    154 				break;
    155 			}
    156 		}
    157 # endif
    158 		for (;;) {
    159 			had_char = FALSE;
    160 			for (pp = Player; pp < End_player; pp++)
    161 				if (havechar(pp)) {
    162 					execute(pp);
    163 					pp->p_nexec++;
    164 					had_char++;
    165 				}
    166 # ifdef MONITOR
    167 			for (pp = Monitor; pp < End_monitor; pp++)
    168 				if (havechar(pp)) {
    169 					mon_execute(pp);
    170 					pp->p_nexec++;
    171 					had_char++;
    172 				}
    173 # endif
    174 			if (!had_char)
    175 				break;
    176 			moveshots();
    177 			for (pp = Player; pp < End_player; )
    178 				if (pp->p_death[0] != '\0')
    179 					zap(pp, TRUE);
    180 				else
    181 					pp++;
    182 # ifdef MONITOR
    183 			for (pp = Monitor; pp < End_monitor; )
    184 				if (pp->p_death[0] != '\0')
    185 					zap(pp, FALSE);
    186 				else
    187 					pp++;
    188 # endif
    189 		}
    190 		if (FD_ISSET(Socket, &read_fds))
    191 			if (answer()) {
    192 # ifdef INTERNET
    193 				if (first && standard_port)
    194 					faketalk();
    195 # endif
    196 				first = FALSE;
    197 			}
    198 		if (FD_ISSET(Status, &read_fds))
    199 			send_stats();
    200 		for (pp = Player; pp < End_player; pp++) {
    201 			if (FD_ISSET(pp->p_fd, &read_fds))
    202 				sendcom(pp, READY, pp->p_nexec);
    203 			pp->p_nexec = 0;
    204 			(void) fflush(pp->p_output);
    205 		}
    206 # ifdef MONITOR
    207 		for (pp = Monitor; pp < End_monitor; pp++) {
    208 			if (FD_ISSET(pp->p_fd, &read_fds))
    209 				sendcom(pp, READY, pp->p_nexec);
    210 			pp->p_nexec = 0;
    211 			(void) fflush(pp->p_output);
    212 		}
    213 # endif
    214 	} while (Nplayer > 0);
    215 
    216 	read_fds = Fds_mask;
    217 	if (select(Num_fds, &read_fds, NULL, NULL, &linger) > 0) {
    218 		goto again;
    219 	}
    220 	if (server) {
    221 		clear_scores();
    222 		makemaze();
    223 		clearwalls();
    224 # ifdef BOOTS
    225 		makeboots();
    226 # endif
    227 		first = TRUE;
    228 		goto again;
    229 	}
    230 
    231 # ifdef MONITOR
    232 	for (pp = Monitor; pp < End_monitor; )
    233 		zap(pp, FALSE);
    234 # endif
    235 	cleanup(0);
    236 	/* NOTREACHED */
    237 	return(0);
    238 }
    239 
    240 /*
    241  * init:
    242  *	Initialize the global parameters.
    243  */
    244 static void
    245 init()
    246 {
    247 	int	i;
    248 # ifdef	INTERNET
    249 	SOCKET	test_port;
    250 	int	msg;
    251 	int	len;
    252 # endif
    253 
    254 # ifndef DEBUG
    255 # ifdef TIOCNOTTY
    256 	(void) ioctl(fileno(stdout), TIOCNOTTY, NULL);
    257 # endif
    258 	(void) setpgrp(getpid(), getpid());
    259 	(void) signal(SIGHUP, SIG_IGN);
    260 	(void) signal(SIGINT, SIG_IGN);
    261 	(void) signal(SIGQUIT, SIG_IGN);
    262 	(void) signal(SIGTERM, cleanup);
    263 # endif
    264 
    265 	(void) chdir("/var/tmp");	/* just in case it core dumps */
    266 	(void) umask(0);		/* No privacy at all! */
    267 	(void) signal(SIGPIPE, SIG_IGN);
    268 
    269 # ifdef LOG
    270 # ifdef	SYSLOG_43
    271 	openlog("HUNT", LOG_PID, LOG_DAEMON);
    272 # endif
    273 # ifdef	SYSLOG_42
    274 	openlog("HUNT", LOG_PID);
    275 # endif
    276 # endif
    277 
    278 	/*
    279 	 * Initialize statistics socket
    280 	 */
    281 # ifdef	INTERNET
    282 	Daemon.sin_family = SOCK_FAMILY;
    283 	Daemon.sin_addr.s_addr = INADDR_ANY;
    284 	Daemon.sin_port = 0;
    285 # else
    286 	Daemon.sun_family = SOCK_FAMILY;
    287 	(void) strcpy(Daemon.sun_path, Stat_name);
    288 # endif
    289 
    290 	Status = socket(SOCK_FAMILY, SOCK_STREAM, 0);
    291 	if (bind(Status, (struct sockaddr *) &Daemon, DAEMON_SIZE) < 0) {
    292 		if (errno == EADDRINUSE)
    293 			exit(0);
    294 		else {
    295 # ifdef LOG
    296 			syslog(LOG_ERR, "bind: %m");
    297 # else
    298 			warn("bind");
    299 # endif
    300 			cleanup(1);
    301 		}
    302 	}
    303 	(void) listen(Status, 5);
    304 
    305 # ifdef INTERNET
    306 	len = sizeof (SOCKET);
    307 	if (getsockname(Status, (struct sockaddr *) &Daemon, &len) < 0)  {
    308 # ifdef LOG
    309 		syslog(LOG_ERR, "getsockname: %m");
    310 # else
    311 		warn("getsockname");
    312 # endif
    313 		exit(1);
    314 	}
    315 	stat_port = ntohs(Daemon.sin_port);
    316 # endif
    317 
    318 	/*
    319 	 * Initialize main socket
    320 	 */
    321 # ifdef	INTERNET
    322 	Daemon.sin_family = SOCK_FAMILY;
    323 	Daemon.sin_addr.s_addr = INADDR_ANY;
    324 	Daemon.sin_port = 0;
    325 # else
    326 	Daemon.sun_family = SOCK_FAMILY;
    327 	(void) strcpy(Daemon.sun_path, Sock_name);
    328 # endif
    329 
    330 	Socket = socket(SOCK_FAMILY, SOCK_STREAM, 0);
    331 # if defined(INTERNET)
    332 	msg = 1;
    333 	if (setsockopt(Socket, SOL_SOCKET, SO_USELOOPBACK, &msg, sizeof msg)<0)
    334 # ifdef LOG
    335 		syslog(LOG_WARNING, "setsockopt loopback %m");
    336 # else
    337 		warn("setsockopt loopback");
    338 # endif
    339 # endif
    340 	if (bind(Socket, (struct sockaddr *) &Daemon, DAEMON_SIZE) < 0) {
    341 		if (errno == EADDRINUSE)
    342 			exit(0);
    343 		else {
    344 # ifdef LOG
    345 			syslog(LOG_ERR, "bind: %m");
    346 # else
    347 			warn("bind");
    348 # endif
    349 			cleanup(1);
    350 		}
    351 	}
    352 	(void) listen(Socket, 5);
    353 
    354 # ifdef INTERNET
    355 	len = sizeof (SOCKET);
    356 	if (getsockname(Socket, (struct sockaddr *) &Daemon, &len) < 0)  {
    357 # ifdef LOG
    358 		syslog(LOG_ERR, "getsockname: %m");
    359 # else
    360 		warn("getsockname");
    361 # endif
    362 		exit(1);
    363 	}
    364 	sock_port = ntohs(Daemon.sin_port);
    365 # endif
    366 
    367 	/*
    368 	 * Initialize minimal select mask
    369 	 */
    370 	FD_ZERO(&Fds_mask);
    371 	FD_SET(Socket, &Fds_mask);
    372 	FD_SET(Status, &Fds_mask);
    373 	Num_fds = ((Socket > Status) ? Socket : Status) + 1;
    374 
    375 # ifdef INTERNET
    376 	len = sizeof (SOCKET);
    377 	if (getsockname(0, (struct sockaddr *) &test_port, &len) >= 0
    378 	&& test_port.sin_family == AF_INET) {
    379 		inetd_spawned = TRUE;
    380 		Test_socket = 0;
    381 		if (test_port.sin_port != htons((u_short) Test_port)) {
    382 			standard_port = FALSE;
    383 			Test_port = ntohs(test_port.sin_port);
    384 		}
    385 	} else {
    386 		test_port = Daemon;
    387 		test_port.sin_port = htons((u_short) Test_port);
    388 
    389 		Test_socket = socket(SOCK_FAMILY, SOCK_DGRAM, 0);
    390 		if (bind(Test_socket, (struct sockaddr *) &test_port,
    391 		    DAEMON_SIZE) < 0) {
    392 # ifdef LOG
    393 			syslog(LOG_ERR, "bind: %m");
    394 # else
    395 			warn("bind");
    396 # endif
    397 			exit(1);
    398 		}
    399 		(void) listen(Test_socket, 5);
    400 	}
    401 
    402 	FD_SET(Test_socket, &Fds_mask);
    403 	if (Test_socket + 1 > Num_fds)
    404 		Num_fds = Test_socket + 1;
    405 # endif
    406 
    407 	Seed = getpid() + time((time_t *) NULL);
    408 	makemaze();
    409 # ifdef BOOTS
    410 	makeboots();
    411 # endif
    412 
    413 	for (i = 0; i < NASCII; i++)
    414 		See_over[i] = TRUE;
    415 	See_over[DOOR] = FALSE;
    416 	See_over[WALL1] = FALSE;
    417 	See_over[WALL2] = FALSE;
    418 	See_over[WALL3] = FALSE;
    419 # ifdef REFLECT
    420 	See_over[WALL4] = FALSE;
    421 	See_over[WALL5] = FALSE;
    422 # endif
    423 
    424 }
    425 
    426 # ifdef BOOTS
    427 /*
    428  * makeboots:
    429  *	Put the boots in the maze
    430  */
    431 static void
    432 makeboots()
    433 {
    434 	int	x, y;
    435 	PLAYER	*pp;
    436 
    437 	do {
    438 		x = rand_num(WIDTH - 1) + 1;
    439 		y = rand_num(HEIGHT - 1) + 1;
    440 	} while (Maze[y][x] != SPACE);
    441 	Maze[y][x] = BOOT_PAIR;
    442 	for (pp = Boot; pp < &Boot[NBOOTS]; pp++)
    443 		pp->p_flying = -1;
    444 }
    445 # endif
    446 
    447 
    448 /*
    449  * checkdam:
    450  *	Check the damage to the given player, and see if s/he is killed
    451  */
    452 void
    453 checkdam(ouch, gotcha, credit, amt, shot_type)
    454 	PLAYER	*ouch, *gotcha;
    455 	IDENT	*credit;
    456 	int	amt;
    457 	char	shot_type;
    458 {
    459 	char	*cp;
    460 
    461 	if (ouch->p_death[0] != '\0')
    462 		return;
    463 # ifdef BOOTS
    464 	if (shot_type == SLIME)
    465 		switch (ouch->p_nboots) {
    466 		  default:
    467 			break;
    468 		  case 1:
    469 			amt = (amt + 1) / 2;
    470 			break;
    471 		  case 2:
    472 			if (gotcha != NULL)
    473 				message(gotcha, "He has boots on!");
    474 			return;
    475 		}
    476 # endif
    477 	ouch->p_damage += amt;
    478 	if (ouch->p_damage <= ouch->p_damcap) {
    479 		(void) sprintf(Buf, "%2d", ouch->p_damage);
    480 		cgoto(ouch, STAT_DAM_ROW, STAT_VALUE_COL);
    481 		outstr(ouch, Buf, 2);
    482 		return;
    483 	}
    484 
    485 	/* Someone DIED */
    486 	switch (shot_type) {
    487 	  default:
    488 		cp = "Killed";
    489 		break;
    490 # ifdef FLY
    491 	  case FALL:
    492 		cp = "Killed on impact";
    493 		break;
    494 # endif
    495 	  case KNIFE:
    496 		cp = "Stabbed to death";
    497 		ouch->p_ammo = 0;		/* No exploding */
    498 		break;
    499 	  case SHOT:
    500 		cp = "Shot to death";
    501 		break;
    502 	  case GRENADE:
    503 	  case SATCHEL:
    504 	  case BOMB:
    505 		cp = "Bombed";
    506 		break;
    507 	  case MINE:
    508 	  case GMINE:
    509 		cp = "Blown apart";
    510 		break;
    511 # ifdef	OOZE
    512 	  case SLIME:
    513 		cp = "Slimed";
    514 		if (credit != NULL)
    515 			credit->i_slime++;
    516 		break;
    517 # endif
    518 # ifdef	VOLCANO
    519 	  case LAVA:
    520 		cp = "Baked";
    521 		break;
    522 # endif
    523 # ifdef DRONE
    524 	  case DSHOT:
    525 		cp = "Eliminated";
    526 		break;
    527 # endif
    528 	}
    529 	if (credit == NULL) {
    530 		(void) sprintf(ouch->p_death, "| %s by %s |", cp,
    531 			(shot_type == MINE || shot_type == GMINE) ?
    532 			"a mine" : "act of God");
    533 		return;
    534 	}
    535 
    536 	(void) sprintf(ouch->p_death, "| %s by %s |", cp, credit->i_name);
    537 
    538 	if (ouch == gotcha) {		/* No use killing yourself */
    539 		credit->i_kills--;
    540 		credit->i_bkills++;
    541 	}
    542 	else if (ouch->p_ident->i_team == ' '
    543 	|| ouch->p_ident->i_team != credit->i_team) {
    544 		credit->i_kills++;
    545 		credit->i_gkills++;
    546 	}
    547 	else {
    548 		credit->i_kills--;
    549 		credit->i_bkills++;
    550 	}
    551 	credit->i_score = credit->i_kills / (double) credit->i_entries;
    552 	ouch->p_ident->i_deaths++;
    553 	if (ouch->p_nchar == 0)
    554 		ouch->p_ident->i_stillb++;
    555 	if (gotcha == NULL)
    556 		return;
    557 	gotcha->p_damcap += STABDAM;
    558 	gotcha->p_damage -= STABDAM;
    559 	if (gotcha->p_damage < 0)
    560 		gotcha->p_damage = 0;
    561 	(void) sprintf(Buf, "%2d/%2d", gotcha->p_damage, gotcha->p_damcap);
    562 	cgoto(gotcha, STAT_DAM_ROW, STAT_VALUE_COL);
    563 	outstr(gotcha, Buf, 5);
    564 	(void) sprintf(Buf, "%3d", (gotcha->p_damcap - MAXDAM) / 2);
    565 	cgoto(gotcha, STAT_KILL_ROW, STAT_VALUE_COL);
    566 	outstr(gotcha, Buf, 3);
    567 	(void) sprintf(Buf, "%5.2f", gotcha->p_ident->i_score);
    568 	for (ouch = Player; ouch < End_player; ouch++) {
    569 		cgoto(ouch, STAT_PLAY_ROW + 1 + (gotcha - Player),
    570 			STAT_NAME_COL);
    571 		outstr(ouch, Buf, 5);
    572 	}
    573 # ifdef MONITOR
    574 	for (ouch = Monitor; ouch < End_monitor; ouch++) {
    575 		cgoto(ouch, STAT_PLAY_ROW + 1 + (gotcha - Player),
    576 			STAT_NAME_COL);
    577 		outstr(ouch, Buf, 5);
    578 	}
    579 # endif
    580 }
    581 
    582 /*
    583  * zap:
    584  *	Kill off a player and take him out of the game.
    585  */
    586 static void
    587 zap(pp, was_player)
    588 	PLAYER	*pp;
    589 	FLAG	was_player;
    590 {
    591 	int	i, len;
    592 	BULLET	*bp;
    593 	PLAYER	*np;
    594 	int	x, y;
    595 	int	savefd;
    596 
    597 	if (was_player) {
    598 		if (pp->p_undershot)
    599 			fixshots(pp->p_y, pp->p_x, pp->p_over);
    600 		drawplayer(pp, FALSE);
    601 		Nplayer--;
    602 	}
    603 
    604 	len = strlen(pp->p_death);	/* Display the cause of death */
    605 	x = (WIDTH - len) / 2;
    606 	cgoto(pp, HEIGHT / 2, x);
    607 	outstr(pp, pp->p_death, len);
    608 	for (i = 1; i < len; i++)
    609 		pp->p_death[i] = '-';
    610 	pp->p_death[0] = '+';
    611 	pp->p_death[len - 1] = '+';
    612 	cgoto(pp, HEIGHT / 2 - 1, x);
    613 	outstr(pp, pp->p_death, len);
    614 	cgoto(pp, HEIGHT / 2 + 1, x);
    615 	outstr(pp, pp->p_death, len);
    616 	cgoto(pp, HEIGHT, 0);
    617 
    618 	savefd = pp->p_fd;
    619 
    620 # ifdef MONITOR
    621 	if (was_player) {
    622 # endif
    623 		for (bp = Bullets; bp != NULL; bp = bp->b_next) {
    624 			if (bp->b_owner == pp)
    625 				bp->b_owner = NULL;
    626 			if (bp->b_x == pp->p_x && bp->b_y == pp->p_y)
    627 				bp->b_over = SPACE;
    628 		}
    629 
    630 		i = rand_num(pp->p_ammo);
    631 		x = rand_num(pp->p_ammo);
    632 		if (x > i)
    633 			i = x;
    634 		if (pp->p_ammo == 0)
    635 			x = 0;
    636 		else if (i == pp->p_ammo - 1) {
    637 			x = pp->p_ammo;
    638 			len = SLIME;
    639 		}
    640 		else {
    641 			for (x = MAXBOMB - 1; x > 0; x--)
    642 				if (i >= shot_req[x])
    643 					break;
    644 			for (y = MAXSLIME - 1; y > 0; y--)
    645 				if (i >= slime_req[y])
    646 					break;
    647 			if (y >= 0 && slime_req[y] > shot_req[x]) {
    648 				x = slime_req[y];
    649 				len = SLIME;
    650 			}
    651 			else if (x != 0) {
    652 				len = shot_type[x];
    653 				x = shot_req[x];
    654 			}
    655 		}
    656 		if (x > 0) {
    657 			(void) add_shot(len, pp->p_y, pp->p_x, pp->p_face, x,
    658 				(PLAYER *) NULL, TRUE, SPACE);
    659 			(void) sprintf(Buf, "%s detonated.",
    660 				pp->p_ident->i_name);
    661 			for (np = Player; np < End_player; np++)
    662 				message(np, Buf);
    663 # ifdef MONITOR
    664 			for (np = Monitor; np < End_monitor; np++)
    665 				message(np, Buf);
    666 # endif
    667 # ifdef BOOTS
    668 			while (pp->p_nboots-- > 0) {
    669 				for (np = Boot; np < &Boot[NBOOTS]; np++)
    670 					if (np->p_flying < 0)
    671 						break;
    672 				if (np >= &Boot[NBOOTS])
    673 					err(1, "Too many boots");
    674 				np->p_undershot = FALSE;
    675 				np->p_x = pp->p_x;
    676 				np->p_y = pp->p_y;
    677 				np->p_flying = rand_num(20);
    678 				np->p_flyx = 2 * rand_num(6) - 5;
    679 				np->p_flyy = 2 * rand_num(6) - 5;
    680 				np->p_over = SPACE;
    681 				np->p_face = BOOT;
    682 				showexpl(np->p_y, np->p_x, BOOT);
    683 			}
    684 # endif
    685 		}
    686 # ifdef BOOTS
    687 		else if (pp->p_nboots > 0) {
    688 			if (pp->p_nboots == 2)
    689 				Maze[pp->p_y][pp->p_x] = BOOT_PAIR;
    690 			else
    691 				Maze[pp->p_y][pp->p_x] = BOOT;
    692 			if (pp->p_undershot)
    693 				fixshots(pp->p_y, pp->p_x,
    694 					Maze[pp->p_y][pp->p_x]);
    695 		}
    696 # endif
    697 
    698 # ifdef VOLCANO
    699 		volcano += pp->p_ammo - x;
    700 		if (rand_num(100) < volcano / 50) {
    701 			do {
    702 				x = rand_num(WIDTH / 2) + WIDTH / 4;
    703 				y = rand_num(HEIGHT / 2) + HEIGHT / 4;
    704 			} while (Maze[y][x] != SPACE);
    705 			(void) add_shot(LAVA, y, x, LEFTS, volcano,
    706 				(PLAYER *) NULL, TRUE, SPACE);
    707 			for (np = Player; np < End_player; np++)
    708 				message(np, "Volcano eruption.");
    709 			volcano = 0;
    710 		}
    711 # endif
    712 
    713 # ifdef	DRONE
    714 		if (rand_num(100) < 2) {
    715 			do {
    716 				x = rand_num(WIDTH / 2) + WIDTH / 4;
    717 				y = rand_num(HEIGHT / 2) + HEIGHT / 4;
    718 			} while (Maze[y][x] != SPACE);
    719 			add_shot(DSHOT, y, x, rand_dir(),
    720 				shot_req[MINDSHOT +
    721 				rand_num(MAXBOMB - MINDSHOT)],
    722 				(PLAYER *) NULL, FALSE, SPACE);
    723 		}
    724 # endif
    725 
    726 		sendcom(pp, ENDWIN);
    727 		(void) putc(' ', pp->p_output);
    728 		(void) fclose(pp->p_output);
    729 
    730 		End_player--;
    731 		if (pp != End_player) {
    732 			memcpy(pp, End_player, sizeof (PLAYER));
    733 			(void) sprintf(Buf, "%5.2f%c%-10.10s %c",
    734 				pp->p_ident->i_score, stat_char(pp),
    735 				pp->p_ident->i_name, pp->p_ident->i_team);
    736 			i = STAT_PLAY_ROW + 1 + (pp - Player);
    737 			for (np = Player; np < End_player; np++) {
    738 				cgoto(np, i, STAT_NAME_COL);
    739 				outstr(np, Buf, STAT_NAME_LEN);
    740 			}
    741 # ifdef MONITOR
    742 			for (np = Monitor; np < End_monitor; np++) {
    743 				cgoto(np, i, STAT_NAME_COL);
    744 				outstr(np, Buf, STAT_NAME_LEN);
    745 			}
    746 # endif
    747 		}
    748 
    749 		/* Erase the last player */
    750 		i = STAT_PLAY_ROW + 1 + Nplayer;
    751 		for (np = Player; np < End_player; np++) {
    752 			cgoto(np, i, STAT_NAME_COL);
    753 			ce(np);
    754 		}
    755 # ifdef MONITOR
    756 		for (np = Monitor; np < End_monitor; np++) {
    757 			cgoto(np, i, STAT_NAME_COL);
    758 			ce(np);
    759 		}
    760 	}
    761 	else {
    762 		sendcom(pp, ENDWIN);
    763 		(void) putc(LAST_PLAYER, pp->p_output);
    764 		(void) fclose(pp->p_output);
    765 
    766 		End_monitor--;
    767 		if (pp != End_monitor) {
    768 			memcpy(pp, End_monitor, sizeof (PLAYER));
    769 			(void) sprintf(Buf, "%5.5s %-10.10s %c", " ",
    770 				pp->p_ident->i_name, pp->p_ident->i_team);
    771 			i = STAT_MON_ROW + 1 + (pp - Player);
    772 			for (np = Player; np < End_player; np++) {
    773 				cgoto(np, i, STAT_NAME_COL);
    774 				outstr(np, Buf, STAT_NAME_LEN);
    775 			}
    776 			for (np = Monitor; np < End_monitor; np++) {
    777 				cgoto(np, i, STAT_NAME_COL);
    778 				outstr(np, Buf, STAT_NAME_LEN);
    779 			}
    780 		}
    781 
    782 		/* Erase the last monitor */
    783 		i = STAT_MON_ROW + 1 + (End_monitor - Monitor);
    784 		for (np = Player; np < End_player; np++) {
    785 			cgoto(np, i, STAT_NAME_COL);
    786 			ce(np);
    787 		}
    788 		for (np = Monitor; np < End_monitor; np++) {
    789 			cgoto(np, i, STAT_NAME_COL);
    790 			ce(np);
    791 		}
    792 
    793 	}
    794 # endif
    795 
    796 	FD_CLR(savefd, &Fds_mask);
    797 	if (Num_fds == savefd + 1) {
    798 		Num_fds = Socket;
    799 # ifdef INTERNET
    800 		if (Test_socket > Socket)
    801 			Num_fds = Test_socket;
    802 # endif
    803 		for (np = Player; np < End_player; np++)
    804 			if (np->p_fd > Num_fds)
    805 				Num_fds = np->p_fd;
    806 # ifdef MONITOR
    807 		for (np = Monitor; np < End_monitor; np++)
    808 			if (np->p_fd > Num_fds)
    809 				Num_fds = np->p_fd;
    810 # endif
    811 		Num_fds++;
    812 	}
    813 }
    814 
    815 /*
    816  * rand_num:
    817  *	Return a random number in a given range.
    818  */
    819 int
    820 rand_num(range)
    821 	int	range;
    822 {
    823 	return (range == 0 ? 0 : RN % range);
    824 }
    825 
    826 /*
    827  * havechar:
    828  *	Check to see if we have any characters in the input queue; if
    829  *	we do, read them, stash them away, and return TRUE; else return
    830  *	FALSE.
    831  */
    832 static int
    833 havechar(pp)
    834 	PLAYER	*pp;
    835 {
    836 
    837 	if (pp->p_ncount < pp->p_nchar)
    838 		return TRUE;
    839 	if (!FD_ISSET(pp->p_fd, &Have_inp))
    840 		return FALSE;
    841 	FD_CLR(pp->p_fd, &Have_inp);
    842 check_again:
    843 	errno = 0;
    844 	if ((pp->p_nchar = read(pp->p_fd, pp->p_cbuf, sizeof pp->p_cbuf)) <= 0)
    845 	{
    846 		if (errno == EINTR)
    847 			goto check_again;
    848 		pp->p_cbuf[0] = 'q';
    849 	}
    850 	pp->p_ncount = 0;
    851 	return TRUE;
    852 }
    853 
    854 /*
    855  * cleanup:
    856  *	Exit with the given value, cleaning up any droppings lying around
    857  */
    858 SIGNAL_TYPE
    859 cleanup(eval)
    860 	int	eval;
    861 {
    862 	PLAYER	*pp;
    863 
    864 	for (pp = Player; pp < End_player; pp++) {
    865 		cgoto(pp, HEIGHT, 0);
    866 		sendcom(pp, ENDWIN);
    867 		(void) putc(LAST_PLAYER, pp->p_output);
    868 		(void) fclose(pp->p_output);
    869 	}
    870 # ifdef MONITOR
    871 	for (pp = Monitor; pp < End_monitor; pp++) {
    872 		cgoto(pp, HEIGHT, 0);
    873 		sendcom(pp, ENDWIN);
    874 		(void) putc(LAST_PLAYER, pp->p_output);
    875 		(void) fclose(pp->p_output);
    876 	}
    877 # endif
    878 	(void) close(Socket);
    879 # ifdef AF_UNIX_HACK
    880 	(void) unlink(Sock_name);
    881 # endif
    882 
    883 	exit(eval);
    884 }
    885 
    886 /*
    887  * send_stats:
    888  *	Print stats to requestor
    889  */
    890 static void
    891 send_stats()
    892 {
    893 	IDENT	*ip;
    894 	FILE	*fp;
    895 	int	s;
    896 	SOCKET	sockstruct;
    897 	int	socklen;
    898 
    899 	/*
    900 	 * Get the output stream ready
    901 	 */
    902 # ifdef INTERNET
    903 	socklen = sizeof sockstruct;
    904 # else
    905 	socklen = sizeof sockstruct - 1;
    906 # endif
    907 	s = accept(Status, (struct sockaddr *) &sockstruct, &socklen);
    908 	if (s < 0) {
    909 		if (errno == EINTR)
    910 			return;
    911 # ifdef LOG
    912 		syslog(LOG_ERR, "accept: %m");
    913 # else
    914 		warn("accept");
    915 # endif
    916 		return;
    917 	}
    918 	fp = fdopen(s, "w");
    919 	if (fp == NULL) {
    920 # ifdef LOG
    921 		syslog(LOG_ERR, "fdopen: %m");
    922 # else
    923 		warn("fdopen");
    924 # endif
    925 		(void) close(s);
    926 		return;
    927 	}
    928 
    929 	/*
    930 	 * Send output to requestor
    931 	 */
    932 	fputs("Name\t\tScore\tDucked\tAbsorb\tFaced\tShot\tRobbed\tMissed\tSlimeK\n", fp);
    933 	for (ip = Scores; ip != NULL; ip = ip->i_next) {
    934 		fprintf(fp, "%s\t", ip->i_name);
    935 		if (strlen(ip->i_name) < 8)
    936 			putc('\t', fp);
    937 		fprintf(fp, "%.2f\t%d\t%d\t%d\t%d\t%d\t%d\t%d\n",
    938 			ip->i_score, ip->i_ducked, ip->i_absorbed,
    939 			ip->i_faced, ip->i_shot, ip->i_robbed,
    940 			ip->i_missed, ip->i_slime);
    941 	}
    942 	fputs("\n\nName\t\tEnemy\tFriend\tDeaths\tStill\tSaved\n", fp);
    943 	for (ip = Scores; ip != NULL; ip = ip->i_next) {
    944 		if (ip->i_team == ' ') {
    945 			fprintf(fp, "%s\t", ip->i_name);
    946 			if (strlen(ip->i_name) < 8)
    947 				putc('\t', fp);
    948 		}
    949 		else {
    950 			fprintf(fp, "%s[%c]\t", ip->i_name, ip->i_team);
    951 			if (strlen(ip->i_name) + 3 < 8)
    952 				putc('\t', fp);
    953 		}
    954 		fprintf(fp, "%d\t%d\t%d\t%d\t%d\n",
    955 			ip->i_gkills, ip->i_bkills, ip->i_deaths,
    956 			ip->i_stillb, ip->i_saved);
    957 	}
    958 
    959 	(void) fclose(fp);
    960 }
    961 
    962 /*
    963  * clear_scores:
    964  *	Clear out the scores so the next session start clean
    965  */
    966 static void
    967 clear_scores()
    968 {
    969 	IDENT	*ip, *nextip;
    970 
    971 	for (ip = Scores; ip != NULL; ip = nextip) {
    972 		nextip = ip->i_next;
    973 		(void) free((char *) ip);
    974 	}
    975 	Scores = NULL;
    976 }
    977