/* move.c - Routines for moving about */
/* $Id: move.c,v 1.32 2004/02/23 04:35:14 rmg Exp $ */

#include "copyright.h"
#include "autoconf.h"
#include "config.h"

#include "alloc.h"	/* required by mudconf */
#include "flags.h"	/* required by mudconf */
#include "htab.h"	/* required by mudconf */
#include "mudconf.h"	/* required by code */

#include "db.h"		/* required by externs */
#include "externs.h"	/* required by code */

#include "match.h"	/* required by code */
#include "attrs.h"	/* required by code */
#include "powers.h"	/* required by code */

/* ---------------------------------------------------------------------------
 * process_leave_loc: Generate messages and actions resulting from leaving
 * a place.
 */

static void process_leave_loc(thing, dest, cause, canhear, hush)
dbref thing, dest, cause;
int canhear, hush;
{
	dbref loc;
	int quiet, pattr, oattr, aattr;

	loc = Location(thing);
	if ((loc == NOTHING) || (loc == dest))
		return;


	if (dest == HOME)
		dest = Home(thing);

#ifdef PUEBLO_SUPPORT
	if (Html(thing)) {
		notify_html(thing, "<xch_page clear=links>");
	}
#endif

	/* Run the LEAVE attributes in the current room if we meet any of 
	 * following criteria: 
	 * - The current room has wizard privs.
	 * - Neither the current room nor the moving object are dark. 
	 * - The moving object can hear and does not hav wizard
	 *   privs. EXCEPT if we were called with the HUSH_LEAVE key. 
	 */

	quiet = (!(Wizard(loc) ||
		   (!Dark(thing) && !Dark(loc)) ||
		   (canhear && !DarkMover(thing)))) ||
		(hush & HUSH_LEAVE);
	oattr = quiet ? A_NULL : A_OLEAVE;
	aattr = (!quiet || (mudconf.dark_actions && !(hush & HUSH_LEAVE))) ?
	    A_ALEAVE : A_NULL;
	pattr = (!mudconf.terse_movemsg && Terse(thing)) ? A_NULL : A_LEAVE;
	did_it(thing, loc, pattr, NULL, oattr, NULL, aattr, 0,
	       (char **)NULL, 0, MSG_MOVE);

	/* Do OXENTER for receiving room */

	if ((dest != NOTHING) && !quiet)
		did_it(thing, dest, A_NULL, NULL, A_OXENTER, NULL, A_NULL, 0,
		       (char **)NULL, 0, MSG_MOVE);

	/* Display the 'has left' message if we meet any of the following
	 * criteria: 
	 * - Neither the current room nor the moving object are dark. 
	 * - The object can hear and is not a dark wizard. 
	 */

	if (!quiet && !Blind(thing) && !Blind(loc)) {
		if ((!Dark(thing) && !Dark(loc)) ||
		    (canhear && !DarkMover(thing))) {
			notify_except2(loc, thing, thing, cause,
				       tprintf("%s has left.", Name(thing)),
				       MSG_MOVE);
		}
	}
}

/* ---------------------------------------------------------------------------
 * process_enter_loc: Generate messages and actions resulting from entering
 * a place.
 */

static void process_enter_loc(thing, src, cause, canhear, hush)
dbref thing, src, cause;
int canhear, hush;
{
	dbref loc;
	int quiet, pattr, oattr, aattr;

	loc = Location(thing);
	if ((loc == NOTHING) || (loc == src))
		return;

#ifdef PUEBLO_SUPPORT
	show_vrml_url(thing, loc);
#endif
	
	/* Run the ENTER attributes in the current room if we meet any of 
	 * following criteria: 
	 * - The current room has wizard privs.
	 * - Neither the current room nor the moving object are dark. 
	 * - The moving object can hear and does not hav wizard
	 *   privs. EXCEPT if we were called with the HUSH_ENTER key. 
	 */

	quiet = (!(Wizard(loc) ||
		   (!Dark(thing) && !Dark(loc)) ||
		   (canhear && !DarkMover(thing)))) ||
		(hush & HUSH_ENTER);
	oattr = quiet ? A_NULL : A_OENTER;
	aattr = (!quiet || (mudconf.dark_actions && !(hush & HUSH_ENTER))) ?
	    A_AENTER : A_NULL;
	pattr = (!mudconf.terse_movemsg && Terse(thing)) ? A_NULL : A_ENTER;
	did_it(thing, loc, pattr, NULL, oattr, NULL, aattr, 0,
	       (char **)NULL, 0, MSG_MOVE);

	/* Do OXLEAVE for sending room */

	if ((src != NOTHING) && !quiet)
		did_it(thing, src, A_NULL, NULL, A_OXLEAVE, NULL, A_NULL, 0,
		       (char **)NULL, 0, MSG_MOVE);

	/* Display the 'has arrived' message if we meet all of the following
	 * criteria: 
	 * - The moving object can hear. 
	 * - The object is not a dark wizard. 
	 */

	if (!quiet && canhear &&
	    !Blind(thing) && !Blind(loc) && !DarkMover(thing)) {
		notify_except2(loc, thing, thing, cause,
			       tprintf("%s has arrived.", Name(thing)),
			       MSG_MOVE);
	}
}

/* ---------------------------------------------------------------------------
 * move_object: Physically move an object from one place to another.
 * Does not generate any messages or actions.
 */

void move_object(thing, dest)
dbref thing, dest;
{
	dbref src;

	/* Remove from the source location */

	src = Location(thing);
	if (src != NOTHING)
		s_Contents(src, remove_first(Contents(src), thing));

	/* Special check for HOME */

	if (dest == HOME)
		dest = Home(thing);

	/* Add to destination location */

	if (dest != NOTHING) {
		s_Contents(dest, insert_first(Contents(dest), thing));
	} else {
		s_Next(thing, NOTHING);
	}
	s_Location(thing, dest);

	/* Look around and do the penny check */

	look_in(thing, dest, (LK_SHOWEXIT | LK_OBEYTERSE));
	if (isPlayer(thing) &&
	    (mudconf.payfind > 0) &&
	    (Pennies(thing) < mudconf.paylimit) &&
	    (!Controls(thing, dest)) &&
	    (Randomize(mudconf.payfind) == 0)) {
		giveto(thing, 1);
		notify(thing, tprintf("You found a %s!", mudconf.one_coin));
	}
}

/* ---------------------------------------------------------------------------
 * send_dropto, process_sticky_dropto, process_dropped_dropto,
 * process_sacrifice_dropto: Check for and process droptos.
 */

/* send_dropto: Send an object through the dropto of a room */

static void send_dropto(thing, player)
dbref thing, player;
{
	if (!Sticky(thing))
		move_via_generic(thing, Dropto(Location(thing)), player, 0);
	else
		move_via_generic(thing, HOME, player, 0);
	divest_object(thing);

}

/* process_sticky_dropto: Call when an object leaves the room to see if
 * we should empty the room
 */

static void process_sticky_dropto(loc, player)
dbref loc, player;
{
	dbref dropto, thing, next;

	/* Do nothing if checking anything but a sticky room */

	if (!Good_obj(loc) || !Has_dropto(loc) || !Sticky(loc))
		return;

	/* Make sure dropto loc is valid */

	dropto = Dropto(loc);
	if ((dropto == NOTHING) || (dropto == loc))
		return;

	/* Make sure no players hanging out */

	DOLIST(thing, Contents(loc)) {
		if (Dropper(thing))
			return;
	}

	/* Send everything through the dropto */

	s_Contents(loc, reverse_list(Contents(loc)));
	SAFE_DOLIST(thing, next, Contents(loc)) {
		send_dropto(thing, player);
	}
}

/* process_dropped_dropto: Check what to do when someone drops an object. */

static void process_dropped_dropto(thing, player)
dbref thing, player;
{
	dbref loc;

	/* If STICKY, send home */

	if (Sticky(thing)) {
		move_via_generic(thing, HOME, player, 0);
		divest_object(thing);
		return;
	}
	/* Process the dropto if location is a room and is not STICKY */

	loc = Location(thing);
	if (Has_dropto(loc) && (Dropto(loc) != NOTHING) && !Sticky(loc))
		send_dropto(thing, player);
}

/* ---------------------------------------------------------------------------
 * move_via_generic: Generic move routine, generates standard messages and
 * actions.
 */

void move_via_generic(thing, dest, cause, hush)
dbref thing, dest, cause;
int hush;
{
	dbref src;
	int canhear;

	if (dest == HOME)
		dest = Home(thing);
	src = Location(thing);
	canhear = Hearer(thing);
	process_leave_loc(thing, dest, cause, canhear, hush);
	move_object(thing, dest);
	did_it(thing, thing, A_MOVE, NULL, A_OMOVE, NULL, A_AMOVE, 0,
	       (char **)NULL, 0, MSG_MOVE);
	process_enter_loc(thing, src, cause, canhear, hush);
}

/* ---------------------------------------------------------------------------
 * move_via_exit: Exit move routine, generic + exit messages + dropto check.
 */

void move_via_exit(thing, dest, cause, exit, hush)
dbref thing, dest, cause, exit;
int hush;
{
	dbref src;
	int canhear, darkwiz, quiet, pattr, oattr, aattr;

	if (dest == HOME)
		dest = Home(thing);
	src = Location(thing);
	canhear = Hearer(thing);

	/* Dark wizzes and Cloak powered things don't trigger OSUCC/ASUCC */

	darkwiz = DarkMover(thing);
	quiet = darkwiz || (hush & HUSH_EXIT);

	oattr = quiet ? A_NULL : A_OSUCC;
	aattr = (!quiet || (mudconf.dark_actions && !(hush & HUSH_EXIT))) ?
	    A_ASUCC : A_NULL;
	pattr = (!mudconf.terse_movemsg && Terse(thing)) ? A_NULL : A_SUCC;
	did_it(thing, exit, pattr, NULL, oattr, NULL, aattr, 0,
	       (char **)NULL, 0, MSG_MOVE);
	process_leave_loc(thing, dest, cause, canhear, hush);
	move_object(thing, dest);

	/* Dark wizards don't trigger ODROP/ADROP */

	oattr = quiet ? A_NULL : A_ODROP;
	aattr = (!quiet || (mudconf.dark_actions && !(hush & HUSH_EXIT))) ?
	    A_ADROP : A_NULL;
	pattr = (!mudconf.terse_movemsg && Terse(thing)) ? A_NULL : A_DROP;
	did_it(thing, exit, pattr, NULL, oattr, NULL, aattr, 0,
	       (char **)NULL, 0, MSG_MOVE);

	did_it(thing, thing, A_MOVE, NULL, A_OMOVE, NULL, A_AMOVE, 0,
	       (char **)NULL, 0, MSG_MOVE);
	process_enter_loc(thing, src, cause, canhear, hush);
	process_sticky_dropto(src, thing);
}

/* ---------------------------------------------------------------------------
 * move_via_teleport: Teleport move routine, generic + teleport messages +
 * divestiture + dropto check.
 */

int move_via_teleport(thing, dest, cause, hush)
dbref thing, dest, cause;
int hush;
{
	dbref src, curr;
	int canhear, count;
	char *failmsg;

	src = Location(thing);
	if ((dest != HOME) && Good_obj(src)) {
		curr = src;
		for (count = mudconf.ntfy_nest_lim; count > 0; count--) {
			if (!could_doit(thing, curr, A_LTELOUT)) {
				if ((thing == cause) || (cause == NOTHING))
					failmsg = (char *)
						"You can't teleport out!";
				else {
					failmsg = (char *)
						"You can't be teleported out!";
					notify_quiet(cause,
					    "You can't teleport that out!");
				}
				did_it(thing, src,
				       A_TOFAIL, failmsg, A_OTOFAIL, NULL,
				       A_ATOFAIL, 0, (char **)NULL, 0,
				       MSG_MOVE);
				return 0;
			}
			if (isRoom(curr))
				break;
			curr = Location(curr);
		}
	}
	if (dest == HOME)
		dest = Home(thing);
	canhear = Hearer(thing);
	if (!(hush & HUSH_LEAVE))
		did_it(thing, thing, A_NULL, NULL, A_OXTPORT, NULL,
		       A_NULL, 0, (char **)NULL, 0, MSG_MOVE);
	process_leave_loc(thing, dest, NOTHING, canhear, hush);
	move_object(thing, dest);
	if (!(hush & HUSH_ENTER))
		did_it(thing, thing, A_TPORT, NULL, A_OTPORT, NULL,
		       A_ATPORT, 0, (char **)NULL, 0, MSG_MOVE);
	did_it(thing, thing, A_MOVE, NULL, A_OMOVE, NULL, A_AMOVE, 0,
	       (char **)NULL, 0, MSG_MOVE);
	process_enter_loc(thing, src, NOTHING, canhear, hush);
	divest_object(thing);
	process_sticky_dropto(src, thing);
	return 1;
}

/* ---------------------------------------------------------------------------
 * find_var_dest: Find a variable exit destination (DESTINATION attr).
 */

static dbref find_var_dest(player, exit)
    dbref player;
    dbref exit;
{
    char *buf, *ebuf, *ep, *str;
    dbref aowner, dest_room;
    int aflags, alen;
    GDATA *preserve;

    buf = atr_pget(exit, A_EXITVARDEST, &aowner, &aflags, &alen);
    if (!*buf) {
	free_lbuf(buf);
	return NOTHING;
    }

    preserve = save_global_regs("find_var_dest_save");
    ebuf = ep = alloc_lbuf("find_var_dest");
    str = buf;
    exec(ebuf, &ep, exit, player, player, EV_FCHECK | EV_EVAL | EV_TOP,
	 &str, (char **) NULL, 0);
    free_lbuf(buf);
    restore_global_regs("find_var_dest_save", preserve);

    if (*ebuf == '#')
	dest_room = parse_dbref(ebuf + 1);
    else
	dest_room = NOTHING;

    free_lbuf(ebuf);
    return dest_room;
}

/* ---------------------------------------------------------------------------
 * move_exit: Try to move a player through an exit.
 */

void move_exit(player, exit, divest, failmsg, hush)
dbref player, exit;
int divest, hush;
const char *failmsg;
{
	dbref loc;
	int oattr, aattr;

	loc = Location(exit);
	switch (loc) {
	    case HOME:
		loc = Home(player);
		break;
	    case AMBIGUOUS:
		loc = find_var_dest(player, exit);
		break;
	    default:
		/* EMPTY */
		break;
	}

	if (Good_obj(loc) && could_doit(player, exit, A_LOCK)) {
		switch (Typeof(loc)) {
		case TYPE_ROOM:
			move_via_exit(player, loc, NOTHING, exit, hush);
			if (divest)
				divest_object(player);
			break;
		case TYPE_PLAYER:
		case TYPE_THING:
			if (Going(loc)) {
				notify(player, "You can't go that way.");
				return;
			}
			move_via_exit(player, loc, NOTHING, exit, hush);
			divest_object(player);
			break;
		case TYPE_EXIT:
			notify(player, "You can't go that way.");
			return;
		}
	} else {
	        oattr = (Dark(player) || (hush & HUSH_EXIT)) ?
		    A_NULL : A_OFAIL;
		aattr = ((hush & HUSH_EXIT) ||
			 (Dark(player) && !mudconf.dark_actions)) ?
		    A_NULL : A_AFAIL;
		did_it(player, exit, A_FAIL, failmsg, oattr, NULL, aattr, 0,
		       (char **)NULL, 0, MSG_MOVE);
	}
}


/* ---------------------------------------------------------------------------
 * do_move: Move from one place to another via exits or 'home'.
 */

void do_move(player, cause, key, direction)
dbref player, cause;
int key;
char *direction;
{
	dbref exit, loc;
	int i, quiet;

	if (!string_compare(direction, "home")) {	/* go home w/o stuff */
		if (((Fixed(player)) || (Fixed(Owner(player)))) &&
		    !(WizRoy(player))) {
		    	notify(player, mudconf.fixed_home_msg);
		    	return;
		}
		
		if ((loc = Location(player)) != NOTHING &&
		    !Dark(player) && !Dark(loc)) {

			/* tell all */

			notify_except(loc, player, player,
				      tprintf("%s goes home.", Name(player)),
				      MSG_MOVE);
		}
		/* give the player the messages */

		for (i = 0; i < 3; i++)
			notify(player, "There's no place like home...");
		move_via_generic(player, HOME, NOTHING, 0);
		divest_object(player);
		process_sticky_dropto(loc, player);
		return;
	}
	/* find the exit */

	if (mudconf.move_match_more) {
	    init_match_check_keys(player, direction, TYPE_EXIT);
	    match_exit_with_parents();
	    exit = last_match_result();
	    if (exit == NOTHING) {
		init_match_check_keys(player, direction, TYPE_EXIT);
		match_master_exit();
		exit = last_match_result();
	    }
	    if (exit == NOTHING) {
		init_match_check_keys(player, direction, TYPE_EXIT);
		match_zone_exit();
		exit = last_match_result();
	    }
	} else {
	    init_match_check_keys(player, direction, TYPE_EXIT);
	    match_exit();
	    exit = match_result();
	}

	switch (exit) {
	case NOTHING:		/* try to force the object */
		notify(player, "You can't go that way.");
		break;
	case AMBIGUOUS:
		notify(player, "I don't know which way you mean!");
		break;
	default:
		quiet = 0;
		if ((key & MOVE_QUIET) && Controls(player, exit))
			quiet = HUSH_EXIT;
		move_exit(player, exit, 0, "You can't go that way.", quiet);
	}
}

/* ---------------------------------------------------------------------------
 * do_get: Get an object.
 */

void do_get(player, cause, key, what)
dbref player, cause;
int key;
char *what;
{
	dbref thing, playerloc, thingloc;
	char *failmsg;
	int oattr, aattr, quiet;

	playerloc = Location(player);
	if (!Good_obj(playerloc))
		return;

	/* You can only pick up things in rooms and ENTER_OK objects/players */

	if (!isRoom(playerloc) && !Enter_ok(playerloc) &&
	    !controls(player, playerloc)) {
		notify(player, NOPERM_MESSAGE);
		return;
	}
	/* Look for the thing locally */

	init_match_check_keys(player, what, TYPE_THING);
	match_neighbor();
	match_exit();
	if (Long_Fingers(player))
		match_absolute();	/* long fingers */
	thing = match_result();

	/* Look for the thing in other people's inventories */

	if (!Good_obj(thing))
		thing = match_status(player,
			   match_possessed(player, player, what, thing, 1));
	if (!Good_obj(thing))
		return;

	/* If we found it, get it */

	quiet = 0;
	switch (Typeof(thing)) {
	case TYPE_PLAYER:
	case TYPE_THING:
		/* You can't take what you already have */

		thingloc = Location(thing);
		if (thingloc == player) {
			notify(player, "You already have that!");
			break;
		}
		if ((key & GET_QUIET) && Controls(player, thing))
			quiet = 1;

		if (thing == player) {
			notify(player, "You cannot get yourself!");
		} else if (could_doit(player, thing, A_LOCK)) {
			if (thingloc != Location(player)) {
				notify(thingloc,
				       tprintf("%s was taken from you.",
					       Name(thing)));
			}
			move_via_generic(thing, player, player, 0);
			notify(thing, "Taken.");
			oattr = quiet ? 0 : A_OSUCC;
			aattr = quiet ? 0 : A_ASUCC;
			did_it(player, thing, A_SUCC, "Taken.", oattr, NULL,
			       aattr, 0, (char **)NULL, 0, MSG_MOVE);
		} else {
			oattr = quiet ? 0 : A_OFAIL;
			aattr = quiet ? 0 : A_AFAIL;
			if (thingloc != Location(player))
				failmsg = (char *)"You can't take that from there.";
			else
				failmsg = (char *)"You can't pick that up.";
			did_it(player, thing,
			       A_FAIL, failmsg,
			       oattr, NULL, aattr, 0, (char **)NULL, 0,
			       MSG_MOVE);
		}
		break;
	case TYPE_EXIT:
		/* You can't take what you already have */

		thingloc = Exits(thing);
		if (thingloc == player) {
			notify(player, "You already have that!");
			break;
		}
		/* You must control either the exit or the location */

		playerloc = Location(player);
		if (!Controls(player, thing) && !Controls(player, playerloc)) {
			notify(player, NOPERM_MESSAGE);
			break;
		}
		/* Do it */

		s_Exits(thingloc, remove_first(Exits(thingloc), thing));
		s_Exits(player, insert_first(Exits(player), thing));
		s_Exits(thing, player);
		if (!Quiet(player))
			notify(player, "Exit taken.");
		break;
	default:
		notify(player, "You can't take that!");
		break;
	}
}

/* ---------------------------------------------------------------------------
 * do_drop: Drop an object.
 */

void do_drop(player, cause, key, name)
dbref player, cause;
int key;
char *name;
{
	dbref loc, exitloc, thing;
	char *buf, *bp;
	int quiet, oattr, aattr;

	loc = Location(player);
	if (!Good_obj(loc))
		return;

	init_match(player, name, TYPE_THING);
	match_possession();
	match_carried_exit();

	switch (thing = match_result()) {
	case NOTHING:
		notify(player, "You don't have that!");
		return;
	case AMBIGUOUS:
		notify(player, "I don't know which you mean!");
		return;
	}

	switch (Typeof(thing)) {
	case TYPE_THING:
	case TYPE_PLAYER:

		/* You have to be carrying it */

		if (((Location(thing) != player) && !Wizard(player)) ||
		    (!could_doit(player, thing, A_LDROP))) {
			did_it(player, thing, A_DFAIL, "You can't drop that.",
			       A_ODFAIL, NULL, A_ADFAIL, 0, (char **)NULL, 0,
			       MSG_MOVE);
			return;
		}
		/* Move it */

		move_via_generic(thing, Location(player), player, 0);
		notify(thing, "Dropped.");
		quiet = 0;
		if ((key & DROP_QUIET) && Controls(player, thing))
			quiet = 1;
		bp = buf = alloc_lbuf("do_drop.did_it");
		safe_tprintf_str(buf, &bp, "dropped %s.", Name(thing));
		oattr = quiet ? 0 : A_ODROP;
		aattr = quiet ? 0 : A_ADROP;
		did_it(player, thing, A_DROP, "Dropped.", oattr, buf,
		       aattr, 0, (char **)NULL, 0, MSG_MOVE);
		free_lbuf(buf);

		/* Process droptos */

		process_dropped_dropto(thing, player);

		break;
	case TYPE_EXIT:

		/* You have to be carrying it */

		if ((Exits(thing) != player) && !Wizard(player)) {
			notify(player, "You can't drop that.");
			return;
		}
		if (!Controls(player, loc) && !Open_Anywhere(player)) {
			notify(player, NOPERM_MESSAGE);
			return;
		}
		/* Do it */

		exitloc = Exits(thing);
		s_Exits(exitloc, remove_first(Exits(exitloc), thing));
		s_Exits(loc, insert_first(Exits(loc), thing));
		s_Exits(thing, loc);

		if (!Quiet(player))
			notify(player, "Exit dropped.");
		break;
	default:
		notify(player, "You can't drop that.");
	}

}

/* ---------------------------------------------------------------------------
 * do_enter, do_leave: The enter and leave commands.
 */

void do_enter_internal(player, thing, quiet)
dbref player, thing;
int quiet;
{
	dbref loc;
	int oattr, aattr;

	if (!Enter_ok(thing) && !controls(player, thing)) {
		oattr = quiet ? 0 : A_OEFAIL;
		aattr = quiet ? 0 : A_AEFAIL;
		did_it(player, thing, A_EFAIL, NOPERM_MESSAGE,
		       oattr, NULL, aattr, 0, (char **)NULL, 0, MSG_MOVE);
	} else if (player == thing) {
		notify(player, "You can't enter yourself!");
	} else if (could_doit(player, thing, A_LENTER)) {
		loc = Location(player);
		oattr = quiet ? HUSH_ENTER : 0;
		move_via_generic(player, thing, NOTHING, oattr);
		divest_object(player);
		process_sticky_dropto(loc, player);
	} else {
		oattr = quiet ? 0 : A_OEFAIL;
		aattr = quiet ? 0 : A_AEFAIL;
		did_it(player, thing, A_EFAIL, "You can't enter that.",
		       oattr, NULL, aattr, 0, (char **)NULL, 0, MSG_MOVE);
	}
}

void do_enter(player, cause, key, what)
dbref player, cause;
int key;
char *what;
{
	dbref thing;
	int quiet;

	init_match(player, what, TYPE_THING);
	match_neighbor();
	if (Long_Fingers(player))
		match_absolute();	/* the wizard has long fingers */

	if ((thing = noisy_match_result()) == NOTHING)
		return;

	switch (Typeof(thing)) {
	case TYPE_PLAYER:
	case TYPE_THING:
		quiet = 0;
		if ((key & MOVE_QUIET) && Controls(player, thing))
			quiet = 1;
		do_enter_internal(player, thing, quiet);
		break;
	default:
		notify(player, NOPERM_MESSAGE);
	}
	return;
}

void do_leave(player, cause, key)
dbref player, cause;
int key;
{
	dbref loc;
	int quiet, oattr, aattr;

	loc = Location(player);

	if (!Good_obj(loc) || isRoom(loc) || Going(loc)) {
		notify(player, "You can't leave.");
		return;
	}
	quiet = 0;
	if ((key & MOVE_QUIET) && Controls(player, loc))
		quiet = HUSH_LEAVE;
	if (could_doit(player, loc, A_LLEAVE)) {
		move_via_generic(player, Location(loc), NOTHING, quiet);
	} else {
		oattr = quiet ? 0 : A_OLFAIL;
		aattr = quiet ? 0 : A_ALFAIL;
		did_it(player, loc, A_LFAIL, "You can't leave.",
		       oattr, NULL, aattr, 0, (char **)NULL, 0, MSG_MOVE);
	}
}