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Comparing deliantra/server/common/map.C (file contents):
Revision 1.62 by root, Sun Dec 31 22:23:11 2006 UTC vs.
Revision 1.198 by root, Thu Apr 29 12:24:04 2010 UTC

1	/*	1	/*
2	CrossFire, A Multiplayer game for X-windows	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3		3	*
		4	* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
4	Copyright (C) 2001-2003 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001-2003 Mark Wedel & Crossfire Development Team
5	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
6		7	*
7	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
8	it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
9	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
10	(at your option) any later version.	11	* option) any later version.
11		12	*
12	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.	16	* GNU General Public License for more details.
16		17	*
17	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the Affero GNU General Public License
18	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
20		21	*
21	The authors can be reached via e-mail at <crossfire@schmorp.de>	22	* The authors can be reached via e-mail to <support@deliantra.net>
22	*/	23	*/
23		24
24	#include <global.h>
25	#include <funcpoint.h>
26
27	#include <loader.h>
28	#include <unistd.h>	25	#include <unistd.h>
29		26
		27	#include "global.h"
30	#include "path.h"	28	#include "path.h"
31		29
32	/*	30	//+GPL
33	* This makes a path absolute outside the world of Crossfire.
34	* In other words, it prepends LIBDIR/MAPDIR/ to the given path
35	* and returns the pointer to a static array containing the result.
36	* it really should be called create_mapname
37	*/
38	const char *
39	create_pathname (const char *name)
40	{
41	static char buf[8192];
42	snprintf (buf, sizeof (buf), "%s/%s/%s", settings.datadir, settings.mapdir, name);
43	return buf;
44	}
45		31
46	/*	32	sint8 maptile::outdoor_darkness;
47	* This function checks if a file with the given path exists.
48	* -1 is returned if it fails, otherwise the mode of the file
49	* is returned.
50	* It tries out all the compression suffixes listed in the uncomp[] array.
51	*
52	* If prepend_dir is set, then we call create_pathname (which prepends
53	* libdir & mapdir). Otherwise, we assume the name given is fully
54	* complete.
55	* Only the editor actually cares about the writablity of this -
56	* the rest of the code only cares that the file is readable.
57	* when the editor goes away, the call to stat should probably be
58	* replaced by an access instead (similar to the windows one, but
59	* that seems to be missing the prepend_dir processing
60	*/
61	int
62	check_path (const char *name, int prepend_dir)
63	{
64	char buf[MAX_BUF];
65
66	char *endbuf;
67	struct stat statbuf;
68	int mode = 0;
69
70	if (prepend_dir)
71	strcpy (buf, create_pathname (name));
72	else
73	strcpy (buf, name);
74
75	/* old method (strchr(buf, '\0')) seemd very odd to me -
76	* this method should be equivalant and is clearer.
77	* Can not use strcat because we need to cycle through
78	* all the names.
79	*/
80	endbuf = buf + strlen (buf);
81
82	if (stat (buf, &statbuf))
83	return -1;
84	if (!S_ISREG (statbuf.st_mode))
85	return (-1);
86
87	if (((statbuf.st_mode & S_IRGRP) && getegid () == statbuf.st_gid) ||
88	((statbuf.st_mode & S_IRUSR) && geteuid () == statbuf.st_uid) || (statbuf.st_mode & S_IROTH))
89	mode |= 4;
90
91	if ((statbuf.st_mode & S_IWGRP && getegid () == statbuf.st_gid) ||
92	(statbuf.st_mode & S_IWUSR && geteuid () == statbuf.st_uid) || (statbuf.st_mode & S_IWOTH))
93	mode |= 2;
94
95	return (mode);
96	}
97		33
98	/* This rolls up wall, blocks_magic, blocks_view, etc, all into	34	/* This rolls up wall, blocks_magic, blocks_view, etc, all into
99	* one function that just returns a P_.. value (see map.h)	35	* one function that just returns a P_.. value (see map.h)
100	* it will also do map translation for tiled maps, returning	36	* it will also do map translation for tiled maps, returning
101	* new values into newmap, nx, and ny. Any and all of those	37	* new values into newmap, nx, and ny. Any and all of those
…		…
136	* by the caller.	72	* by the caller.
137	*/	73	*/
138	int	74	int
139	blocked_link (object *ob, maptile *m, int sx, int sy)	75	blocked_link (object *ob, maptile *m, int sx, int sy)
140	{	76	{
141	object *tmp;
142	int mflags, blocked;
143
144	/* Make sure the coordinates are valid - they should be, as caller should	77	/* Make sure the coordinates are valid - they should be, as caller should
145	* have already checked this.	78	* have already checked this.
146	*/	79	*/
147	if (OUT_OF_REAL_MAP (m, sx, sy))	80	if (OUT_OF_REAL_MAP (m, sx, sy))
148	{	81	{
149	LOG (llevError, "blocked_link: Passed map, x, y coordinates outside of map\n");	82	LOG (llevError | logBacktrace, "blocked_link: Passed map, x, y coordinates outside of map\n");
150	return 1;	83	return 1;
151	}	84	}
152		85
153	/* Save some cycles - instead of calling get_map_flags(), just get the value	86	mapspace &ms = m->at (sx, sy);
154	* directly.
155	*/
156	mflags = m->at (sx, sy).flags ();
157		87
158	blocked = GET_MAP_MOVE_BLOCK (m, sx, sy);	88	int mflags = ms.flags ();
		89	int blocked = ms.move_block;
159		90
160	/* If space is currently not blocked by anything, no need to	91	/* If space is currently not blocked by anything, no need to
161	* go further. Not true for players - all sorts of special	92	* go further. Not true for players - all sorts of special
162	* things we need to do for players.	93	* things we need to do for players.
163	*/	94	*/
164	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && (blocked == 0))	95	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && blocked == 0)
165	return 0;	96	return 0;
166		97
167	/* if there isn't anytyhing alive on this space, and this space isn't	98	/* if there isn't anything alive on this space, and this space isn't
168	* otherwise blocked, we can return now. Only if there is a living	99	* otherwise blocked, we can return now. Only if there is a living
169	* creature do we need to investigate if it is part of this creature	100	* creature do we need to investigate if it is part of this creature
170	* or another. Likewise, only if something is blocking us do we	101	* or another. Likewise, only if something is blocking us do we
171	* need to investigate if there is a special circumstance that would	102	* need to investigate if there is a special circumstance that would
172	* let the player through (inventory checkers for example)	103	* let the player through (inventory checkers for example)
173	*/	104	*/
174	if (!(mflags & P_IS_ALIVE) && !OB_TYPE_MOVE_BLOCK (ob, blocked))	105	if (!(mflags & P_IS_ALIVE) && !OB_TYPE_MOVE_BLOCK (ob, blocked))
175	return 0;	106	return 0;
176		107
177	if (ob->head != NULL)
178	ob = ob->head;	108	ob = ob->head_ ();
179		109
180	/* We basically go through the stack of objects, and if there is	110	/* We basically go through the stack of objects, and if there is
181	* some other object that has NO_PASS or FLAG_ALIVE set, return	111	* some other object that has NO_PASS or FLAG_ALIVE set, return
182	* true. If we get through the entire stack, that must mean	112	* true. If we get through the entire stack, that must mean
183	* ob is blocking it, so return 0.	113	* ob is blocking it, so return 0.
184	*/	114	*/
185	for (tmp = GET_MAP_OB (m, sx, sy); tmp; tmp = tmp->above)	115	for (object *tmp = ms.top; tmp; tmp = tmp->below)
186	{	116	{
187		117	if (OB_MOVE_BLOCK (ob, tmp))
188	/* This must be before the checks below. Code for inventory checkers. */
189	if (tmp->type == CHECK_INV && OB_MOVE_BLOCK (ob, tmp))
190	{	118	{
191	/* If last_sp is set, the player/monster needs an object,	119	if (INVOKE_OBJECT (BLOCKED_MOVE, tmp, ob))
192	* so we check for it. If they don't have it, they can't	120	if (RESULT_INT (0))
193	* pass through this space.	121	return 1;
194	*/	122	else
195	if (tmp->last_sp)	123	continue;
		124
		125	if (tmp->type == CHECK_INV)
196	{	126	{
197	if (check_inv_recursive (ob, tmp) == NULL)	127	bool have = check_inv_recursive (ob, tmp);
		128
		129	// last_sp set means we block if we don't have.
		130	if (logical_xor (have, tmp->last_sp))
198	return 1;	131	return 1;
199	else	132	}
200	continue;	133	else if (tmp->type == T_MATCH)
		134	{
		135	// T_MATCH allows "entrance" iff the match is true
		136	// == blocks if the match fails
		137
		138	// we could have used an INVOKE_OBJECT, but decided against it, as we
		139	// assume that T_MATCH is relatively common.
		140	if (!match (tmp->slaying, ob, tmp, ob))
		141	return 1;
201	}	142	}
202	else	143	else
203	{	144	return 1; // unconditional block
204	/* In this case, the player must not have the object -	145
205	* if they do, they can't pass through.
206	*/
207	if (check_inv_recursive (ob, tmp) != NULL) /* player has object */
208	return 1;
209	else
210	continue;
211	}
212	} /* if check_inv */
213	else	146	} else {
214	{	147	// space does not block the ob, directly, but
215	/* Broke apart a big nasty if into several here to make	148	// anything alive that is not a door still
216	* this more readable. first check - if the space blocks	149	// blocks anything
217	* movement, can't move here.	150
218	* second - if a monster, can't move there, unles it is a	151	if (tmp->flag [FLAG_ALIVE]
219	* hidden dm	152	&& tmp->type != DOOR
220	*/	153	&& tmp->head_ () != ob) //TODO: maybe move these check up?
221	if (OB_MOVE_BLOCK (ob, tmp))
222	return 1;
223	if (QUERY_FLAG (tmp, FLAG_ALIVE) && tmp->head != ob && tmp != ob &&
224	tmp->type != DOOR && !(QUERY_FLAG (tmp, FLAG_WIZ) && tmp->contr->hidden))
225	return 1;	154	return 1;
226	}	155	}
227
228	}	156	}
		157
229	return 0;	158	return 0;
230	}	159	}
231		160
232
233	/*	161	/*
234	* Returns true if the given object can't fit in the given spot.	162	* Returns the blocking object if the given object can't fit in the given
235	* This is meant for multi space objects - for single space objecs,	163	* spot. This is meant for multi space objects - for single space objecs,
236	* just calling get_map_blocked and checking that against movement type	164	* just calling get_map_blocked and checking that against movement type
237	* of object. This function goes through all the parts of the	165	* of object. This function goes through all the parts of the multipart
238	* multipart object and makes sure they can be inserted.	166	* object and makes sure they can be inserted.
239	*	167	*
240	* While this doesn't call out of map, the get_map_flags does.	168	* While this doesn't call out of map, the get_map_flags does.
241	*	169	*
242	* This function has been used to deprecate arch_out_of_map -	170	* This function has been used to deprecate arch_out_of_map -
243	* this function also does that check, and since in most cases,	171	* this function also does that check, and since in most cases,
…		…
254	*	182	*
255	* Note this used to be arch_blocked, but with new movement	183	* Note this used to be arch_blocked, but with new movement
256	* code, we need to have actual object to check its move_type	184	* code, we need to have actual object to check its move_type
257	* against the move_block values.	185	* against the move_block values.
258	*/	186	*/
259	int	187	bool
260	ob_blocked (const object *ob, maptile *m, sint16 x, sint16 y)	188	object::blocked (maptile *m, int x, int y) const
261	{	189	{
262	archetype *tmp;	190	for (archetype *tmp = arch; tmp; tmp = (archetype *)tmp->more)
263	int flag;
264	maptile *m1;
265	sint16 sx, sy;
266
267	if (!ob)
268	{
269	flag = get_map_flags (m, &m1, x, y, &sx, &sy);
270	if (flag & P_OUT_OF_MAP)
271	return P_OUT_OF_MAP;
272
273	/* don't have object, so don't know what types would block */
274	return m1->at (sx, sy).move_block;
275	}	191	{
		192	mapxy pos (m, x + tmp->x, y + tmp->y);
276		193
277	for (tmp = ob->arch; tmp; tmp = tmp->more)	194	if (!pos.normalise ())
278	{	195	return 1;
279	flag = get_map_flags (m, &m1, x + tmp->clone.x, y + tmp->clone.y, &sx, &sy);
280		196
281	if (flag & P_OUT_OF_MAP)	197	mapspace &ms = *pos;
282	return P_OUT_OF_MAP;	198
283	if (flag & P_IS_ALIVE)	199	if (ms.flags () & P_IS_ALIVE)
284	return P_IS_ALIVE;	200	return 1;
285		201
286	mapspace &ms = m1->at (sx, sy);	202	/* However, often ob doesn't have any move type
287		203	* (signifying non-moving objects)
288	/* find_first_free_spot() calls this function. However, often
289	* ob doesn't have any move type (when used to place exits)
290	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.	204	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
291	*/	205	*/
292
293	if (ob->move_type == 0 && ms.move_block != MOVE_ALL)	206	if (!move_type && ms.move_block != MOVE_ALL)
294	continue;	207	continue;
295		208
296	/* Note it is intentional that we check ob - the movement type of the	209	/* Note it is intentional that we check ob - the movement type of the
297	* head of the object should correspond for the entire object.	210	* head of the object should correspond for the entire object.
298	*/	211	*/
299	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))	212	if (ms.blocks (move_type))
300	return P_NO_PASS;	213	return 1;
301	}	214	}
302		215
303	return 0;	216	return 0;
304	}	217	}
305		218
306	/* When the map is loaded, load_object does not actually insert objects	219	//-GPL
307	* into inventory, but just links them. What this does is go through
308	* and insert them properly.
309	* The object 'container' is the object that contains the inventory.
310	* This is needed so that we can update the containers weight.
311	*/
312	void
313	fix_container (object *container)
314	{
315	object *tmp = container->inv, *next;
316		220
317	container->inv = 0;	221	void
318	while (tmp)	222	maptile::set_object_flag (int flag, int value)
319	{	223	{
320	next = tmp->below;	224	if (!spaces)
321	if (tmp->inv)	225	return;
322	fix_container (tmp);
323		226
324	insert_ob_in_ob (tmp, container);	227	for (mapspace *ms = spaces + size (); ms-- > spaces; )
325	tmp = next;	228	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
326	}	229	tmp->flag [flag] = value;
327
328	/* sum_weight will go through and calculate what all the containers are
329	* carrying.
330	*/
331	sum_weight (container);
332	}	230	}
		231
		232	void
		233	maptile::post_load_original ()
		234	{
		235	if (!spaces)
		236	return;
		237
		238	set_object_flag (FLAG_OBJ_ORIGINAL);
		239
		240	for (mapspace *ms = spaces + size (); ms-- > spaces; )
		241	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
		242	INVOKE_OBJECT (RESET, tmp);
		243	}
		244
		245	void
		246	maptile::post_load ()
		247	{
		248	#if 0
		249	if (!spaces)
		250	return;
		251
		252	for (mapspace *ms = spaces + size (); ms-- > spaces; )
		253	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
		254	; // nop
		255	#endif
		256	}
		257
		258	//+GPL
333		259
334	/* link_multipart_objects go through all the objects on the map looking	260	/* link_multipart_objects go through all the objects on the map looking
335	* for objects whose arch says they are multipart yet according to the	261	* for objects whose arch says they are multipart yet according to the
336	* info we have, they only have the head (as would be expected when	262	* info we have, they only have the head (as would be expected when
337	* they are saved). We do have to look for the old maps that did save	263	* they are saved).
338	* the more sections and not re-add sections for them.
339	*/	264	*/
340	void	265	void
341	maptile::link_multipart_objects ()	266	maptile::link_multipart_objects ()
342	{	267	{
343	if (!spaces)	268	if (!spaces)
344	return;	269	return;
345		270
346	for (mapspace *ms = spaces + size (); ms-- > spaces; )	271	for (mapspace *ms = spaces + size (); ms-- > spaces; )
347	for (object *tmp = ms->bot; tmp; )	272	{
		273	object *op = ms->bot;
		274	while (op)
348	{	275	{
349	object *above = tmp->above;
350
351	/* already multipart - don't do anything more */	276	/* already multipart - don't do anything more */
352	if (!tmp->head && !tmp->more)	277	if (op->head_ () == op && !op->more && op->arch->more)
353	{
354	/* If there is nothing more to this object, this for loop
355	* won't do anything.
356	*/
357	archetype *at;
358	object *last, *op;
359	for (at = tmp->arch->more, last = tmp;
360	at;
361	at = at->more, last = op)
362	{	278	{
363	op = arch_to_object (at);	279	op->remove ();
		280	op->expand_tail ();
364		281
365	/* update x,y coordinates */	282	// FIXME: INS_ON_TOP is just a workaround for the pentagram vs.
366	op->x += tmp->x;	283	// multi-tile monster bug, where INS_ABOVE_FLOOR_ONLY put the monsters
367	op->y += tmp->y;	284	// below the pentagrams... hopefully INS_ON_TOP doesn't break anything
368	op->head = tmp;
369	op->map = this;
370	last->more = op;
371	op->name = tmp->name;
372	op->title = tmp->title;
373
374	/* we could link all the parts onto tmp, and then just
375	* call insert_ob_in_map once, but the effect is the same,
376	* as insert_ob_in_map will call itself with each part, and
377	* the coding is simpler to just to it here with each part.
378	*/
379	insert_ob_in_map (op, op->map, tmp, INS_NO_MERGE | INS_ABOVE_FLOOR_ONLY | INS_NO_WALK_ON);	285	insert (op, op->x, op->y, 0, INS_NO_MERGE | INS_ON_TOP | INS_NO_WALK_ON);
		286
		287	op = ms->bot; // we are mutating the mapspace too much with INS_ON_TOP
		288	// so we have to reset the iteration through the mapspace
380	}	289	}
		290	else
		291	op = op->above;
381	}	292	}
382
383	tmp = above;
384	}	293	}
385	}	294	}
		295
		296	//-GPL
386		297
387	/*	298	/*
388	* Loads (ands parses) the objects into a given map from the specified	299	* Loads (ands parses) the objects into a given map from the specified
389	* file pointer.	300	* file pointer.
390	* mapflags is the same as we get with load_original_map
391	*/	301	*/
392	bool	302	bool
393	maptile::load_objects (object_thawer &thawer)	303	maptile::_load_objects (object_thawer &f)
394	{	304	{
395	int unique;	305	for (;;)
396	object *op, *prev = NULL, *last_more = NULL, *otmp;
397
398	op = object::create ();
399	op->map = this; /* To handle buttons correctly */
400
401	while (int i = load_object (thawer, op, 0))
402	{	306	{
403	/* if the archetype for the object is null, means that we	307	coroapi::cede_to_tick (); // cede once in a while
404	* got an invalid object. Don't do anything with it - the game	308
405	* or editor will not be able to do anything with it either.	309	switch (f.kw)
406	*/
407	if (op->arch == NULL)
408	{	310	{
409	LOG (llevDebug, "Discarding object without arch: %s\n", op->name ? (const char *) op->name : "(null)");	311	case KW_arch:
		312	if (object *op = object::read (f, this))
		313	{
		314	// TODO: why?
		315	if (op->inv)
		316	op->update_weight ();
		317
		318	if (IN_RANGE_EXC (op->x, 0, width) && IN_RANGE_EXC (op->y, 0, height))
		319	{
		320	// we insert manually because
		321	// a) its way faster
		322	// b) we remove manually, too, and there are good reasons for that
		323	// c) it's correct
		324	mapspace &ms = at (op->x, op->y);
		325
		326	op->flag [FLAG_REMOVED] = false;
		327
		328	op->above = 0;
		329	op->below = ms.top;
		330
		331	*(ms.top ? &ms.top->above : &ms.bot) = op;
		332
		333	ms.top = op;
		334	ms.flags_ = 0;
		335	}
		336	else
		337	{
		338	f.parse_warn (format ("object %s out of range", op->debug_desc ()));
		339	op->destroy ();
		340	}
		341	}
		342
410	continue;	343	continue;
411	}
412		344
413	switch (i)
414	{
415	case LL_NORMAL:
416	insert_ob_in_map (op, this, op, INS_NO_MERGE | INS_NO_WALK_ON | INS_ON_TOP | INS_MAP_LOAD);
417
418	if (op->inv)
419	sum_weight (op);
420
421	prev = op, last_more = op;
422	break;
423
424	case LL_MORE:	345	case KW_EOF:
425	insert_ob_in_map (op, this, op, INS_NO_MERGE | INS_NO_WALK_ON | INS_ABOVE_FLOOR_ONLY);	346	return true;
426	op->head = prev, last_more->more = op, last_more = op;	347
		348	default:
		349	if (!f.parse_error ("map file"))
		350	return false;
427	break;	351	break;
428	}	352	}
429		353
430	op = object::create ();	354	f.next ();
431	op->map = this;
432	}
433
434	op->destroy ();
435
436	#if 0
437	for (i = 0; i < width; i++)
438	for (j = 0; j < height; j++)
439	{
440	unique = 0;
441	/* check for unique items, or unique squares */
442	for (otmp = GET_MAP_OB (m, i, j); otmp; otmp = otmp->above)
443	{
444	if (QUERY_FLAG (otmp, FLAG_UNIQUE) || QUERY_FLAG (otmp, FLAG_OBJ_SAVE_ON_OVL))
445	unique = 1;
446
447	if (!(mapflags & (MAP_OVERLAY | MAP_PLAYER_UNIQUE) || unique))
448	SET_FLAG (otmp, FLAG_OBJ_ORIGINAL);
449	}
450	}	355	}
451	#endif
452		356
453	return true;	357	return true;
454	}	358	}
455		359
456	void	360	void
457	maptile::activate ()	361	maptile::activate ()
458	{	362	{
459	if (!spaces)	363	if (spaces)
460	return;
461
462	for (mapspace *ms = spaces + size (); ms-- > spaces; )	364	for (mapspace *ms = spaces + size (); ms-- > spaces; )
463	for (object *op = ms->bot; op; op = op->above)	365	for (object *op = ms->bot; op; op = op->above)
464	op->activate_recursive ();	366	op->activate_recursive ();
465	}	367	}
466		368
467	void	369	void
468	maptile::deactivate ()	370	maptile::deactivate ()
469	{	371	{
470	if (!spaces)	372	if (spaces)
471	return;
472
473	for (mapspace *ms = spaces + size (); ms-- > spaces; )	373	for (mapspace *ms = spaces + size (); ms-- > spaces; )
474	for (object *op = ms->bot; op; op = op->above)	374	for (object *op = ms->bot; op; op = op->above)
475	op->deactivate_recursive ();	375	op->deactivate_recursive ();
476	}	376	}
477		377
478	bool	378	bool
479	maptile::save_objects (object_freezer &freezer, int flags)	379	maptile::_save_objects (object_freezer &f, int flags)
480	{	380	{
		381	coroapi::cede_to_tick ();
		382
481	if (flags & IO_HEADER)	383	if (flags & IO_HEADER)
482	save_header (freezer);	384	_save_header (f);
483		385
484	if (!spaces)	386	if (!spaces)
485	return false;	387	return false;
486		388
487	for (int i = 0; i < size (); ++i)	389	for (int i = 0; i < size (); ++i)
488	{	390	{
489	int unique = 0;	391	bool unique = 0;
		392
490	for (object *op = spaces [i].bot; op; op = op->above)	393	for (object *op = spaces [i].bot; op; op = op->above)
491	{	394	{
492	if (op->flag [FLAG_UNIQUE] && op->flag [FLAG_IS_FLOOR])	395	unique |= op->flag [FLAG_UNIQUE] && op->flag [FLAG_IS_FLOOR];
493	unique = 1;
494		396
495	if (!op->can_map_save ())	397	if (expect_false (!op->can_map_save ()))
496	continue;	398	continue;
497		399
498	if (unique || op->flag [FLAG_UNIQUE])	400	if (expect_false (unique || op->flag [FLAG_UNIQUE]))
499	{	401	{
500	if (flags & IO_UNIQUES)	402	if (flags & IO_UNIQUES)
501	save_object (freezer, op, 1);	403	op->write (f);
502	}	404	}
503	else if (flags & IO_OBJECTS)	405	else if (expect_true (flags & IO_OBJECTS))
504	save_object (freezer, op, 1);	406	op->write (f);
505	}	407	}
506	}	408	}
507		409
		410	coroapi::cede_to_tick ();
		411
508	return true;	412	return true;
509	}	413	}
510		414
511	bool	415	bool
512	maptile::load_objects (const char *path, bool skip_header)	416	maptile::_save_objects (const char *path, int flags)
513	{	417	{
514	object_thawer thawer (path);	418	object_freezer freezer;
515		419
516	if (!thawer)	420	if (!_save_objects (freezer, flags))
517	return false;	421	return false;
518		422
519	if (skip_header)
520	for (;;)
521	{
522	keyword kw = thawer.get_kv ();
523
524	if (kw == KW_end)
525	break;
526
527	thawer.skip_kv (kw);
528	}
529
530	return load_objects (thawer);
531	}
532
533	bool
534	maptile::save_objects (const char *path, int flags)
535	{
536	object_freezer freezer;
537
538	if (!save_objects (freezer, flags))
539	return false;
540
541	return freezer.save (path);	423	return freezer.save (path);
542	}	424	}
543		425
544	maptile::maptile ()	426	void
		427	maptile::init ()
545	{	428	{
546	in_memory = MAP_SWAPPED;	429	in_memory = MAP_SWAPPED;
547		430
548	/* The maps used to pick up default x and y values from the	431	/* The maps used to pick up default x and y values from the
549	* map archetype. Mimic that behaviour.	432	* map archetype. Mimic that behaviour.
550	*/	433	*/
551	width = 16;	434	width = 16;
552	height = 16;	435	height = 16;
		436	timeout = 300;
		437	max_items = MAX_ITEM_PER_ACTION;
		438	max_volume = 2000000; // 2m³
553	reset_timeout = 0;	439	reset_timeout = 0;
554	timeout = 300;
555	enter_x = 0;	440	enter_x = 0;
556	enter_y = 0;	441	enter_y = 0;
557	}	442	}
558		443
		444	maptile::maptile ()
		445	{
		446	init ();
		447	}
		448
559	maptile::maptile (int w, int h)	449	maptile::maptile (int w, int h)
560	{	450	{
561	in_memory = MAP_SWAPPED;	451	init ();
562		452
563	width = w;	453	width = w;
564	height = h;	454	height = h;
565	reset_timeout = 0;
566	timeout = 300;
567	enter_x = 0;
568	enter_y = 0;
569		455
570	alloc ();	456	alloc ();
571	}	457	}
572		458
573	/*	459	/*
…		…
581	if (spaces)	467	if (spaces)
582	return;	468	return;
583		469
584	spaces = salloc0<mapspace> (size ());	470	spaces = salloc0<mapspace> (size ());
585	}	471	}
		472
		473	//+GPL
586		474
587	/* Takes a string from a map definition and outputs a pointer to the array of shopitems	475	/* Takes a string from a map definition and outputs a pointer to the array of shopitems
588	* corresponding to that string. Memory is allocated for this, it must be freed	476	* corresponding to that string. Memory is allocated for this, it must be freed
589	* at a later date.	477	* at a later date.
590	* Called by parse_map_headers below.	478	* Called by parse_map_headers below.
…		…
667	return items;	555	return items;
668	}	556	}
669		557
670	/* opposite of parse string, this puts the string that was originally fed in to	558	/* opposite of parse string, this puts the string that was originally fed in to
671	* the map (or something equivilent) into output_string. */	559	* the map (or something equivilent) into output_string. */
672	static void	560	static const char *
673	print_shop_string (maptile *m, char *output_string)	561	print_shop_string (maptile *m)
674	{	562	{
675	int i;	563	static dynbuf_text buf; buf.clear ();
676	char tmp[MAX_BUF];	564	bool first = true;
677		565
678	strcpy (output_string, "");
679	for (i = 0; i < m->shopitems[0].index; i++)	566	for (int i = 0; i < m->shopitems[0].index; i++)
680	{	567	{
		568	if (!first)
		569	buf << ';';
		570
		571	first = false;
		572
681	if (m->shopitems[i].typenum)	573	if (m->shopitems[i].typenum)
682	{	574	{
683	if (m->shopitems[i].strength)	575	if (m->shopitems[i].strength)
684	sprintf (tmp, "%s:%d;", m->shopitems[i].name, m->shopitems[i].strength);	576	buf.printf ("%s:%d", m->shopitems[i].name, m->shopitems[i].strength);
685	else	577	else
686	sprintf (tmp, "%s;", m->shopitems[i].name);	578	buf.printf ("%s", m->shopitems[i].name);
687	}	579	}
688	else	580	else
689	{	581	{
690	if (m->shopitems[i].strength)	582	if (m->shopitems[i].strength)
691	sprintf (tmp, "*:%d;", m->shopitems[i].strength);	583	buf.printf ("*:%d", m->shopitems[i].strength);
692	else	584	else
693	sprintf (tmp, "*");	585	buf.printf ("*");
694	}	586	}
695
696	strcat (output_string, tmp);
697	}	587	}
		588
		589	return buf;
698	}	590	}
		591
		592	//-GPL
699		593
700	/* This loads the header information of the map. The header	594	/* This loads the header information of the map. The header
701	* contains things like difficulty, size, timeout, etc.	595	* contains things like difficulty, size, timeout, etc.
702	* this used to be stored in the map object, but with the	596	* this used to be stored in the map object, but with the
703	* addition of tiling, fields beyond that easily named in an	597	* addition of tiling, fields beyond that easily named in an
…		…
707	* This could be done in lex (like the object loader), but I think	601	* This could be done in lex (like the object loader), but I think
708	* currently, there are few enough fields this is not a big deal.	602	* currently, there are few enough fields this is not a big deal.
709	* MSW 2001-07-01	603	* MSW 2001-07-01
710	*/	604	*/
711	bool	605	bool
712	maptile::load_header (object_thawer &thawer)	606	maptile::_load_header (object_thawer &thawer)
713	{	607	{
714	char buf[HUGE_BUF], msgbuf[HUGE_BUF], maplorebuf[HUGE_BUF], *key = NULL, *value, *end;
715	int msgpos = 0;
716	int maplorepos = 0;
717
718	for (;;)	608	for (;;)
719	{	609	{
720	keyword kw = thawer.get_kv ();
721
722	switch (kw)	610	switch (thawer.kw)
723	{	611	{
724	case KW_EOF:
725	LOG (llevError, "%s: end of file while reading map header, aborting header load.\n", &path);
726	return false;
727
728	case KW_end:
729	return true;
730
731	case KW_msg:	612	case KW_msg:
732	thawer.get_ml (KW_endmsg, msg);	613	thawer.get_ml (KW_endmsg, msg);
733	break;	614	break;
734		615
735	case KW_lore: // CF+ extension	616	case KW_lore: // CF+ extension
…		…
757	case KW_shopgreed: thawer.get (shopgreed); break;	638	case KW_shopgreed: thawer.get (shopgreed); break;
758	case KW_shopmin: thawer.get (shopmin); break;	639	case KW_shopmin: thawer.get (shopmin); break;
759	case KW_shopmax: thawer.get (shopmax); break;	640	case KW_shopmax: thawer.get (shopmax); break;
760	case KW_shoprace: thawer.get (shoprace); break;	641	case KW_shoprace: thawer.get (shoprace); break;
761	case KW_outdoor: thawer.get (outdoor); break;	642	case KW_outdoor: thawer.get (outdoor); break;
762	case KW_temp: thawer.get (temp); break;
763	case KW_pressure: thawer.get (pressure); break;
764	case KW_humid: thawer.get (humid); break;
765	case KW_windspeed: thawer.get (windspeed); break;
766	case KW_winddir: thawer.get (winddir); break;
767	case KW_sky: thawer.get (sky); break;
768		643
769	case KW_per_player: thawer.get (per_player); break;	644	case KW_per_player: thawer.get (per_player); break;
770	case KW_per_party: thawer.get (per_party); break;	645	case KW_per_party: thawer.get (per_party); break;
		646	case KW_no_reset: thawer.get (no_reset); break;
		647	case KW_no_drop: thawer.get (no_drop); break;
771		648
772	case KW_region: get_region_by_name (thawer.get_str ()); break;	649	case KW_region: thawer.get (default_region); break;
773	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;	650	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;
774		651
775	// old names new names	652	// old names new names
776	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;	653	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;
777	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;	654	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;
…		…
786	case KW_tile_path_1: thawer.get (tile_path [0]); break;	663	case KW_tile_path_1: thawer.get (tile_path [0]); break;
787	case KW_tile_path_2: thawer.get (tile_path [1]); break;	664	case KW_tile_path_2: thawer.get (tile_path [1]); break;
788	case KW_tile_path_3: thawer.get (tile_path [2]); break;	665	case KW_tile_path_3: thawer.get (tile_path [2]); break;
789	case KW_tile_path_4: thawer.get (tile_path [3]); break;	666	case KW_tile_path_4: thawer.get (tile_path [3]); break;
790		667
		668	case KW_ERROR:
		669	set_key_text (thawer.kw_str, thawer.value);
		670	break;
		671
		672	case KW_end:
		673	thawer.next ();
		674	return true;
		675
791	default:	676	default:
792	LOG (llevError, "%s: skipping unknown key in map header: %s\n", &path, keyword_str [kw]);	677	if (!thawer.parse_error ("map"))
		678	return false;
793	break;	679	break;
794	}	680	}
		681
		682	thawer.next ();
795	}	683	}
796		684
797	abort ();	685	abort ();
798	}	686	}
799		687
800	bool	688	//+GPL
801	maptile::load_header (const char *path)
802	{
803	object_thawer thawer (path);
804
805	if (!thawer)
806	return false;
807
808	return load_header (thawer);
809	}
810		689
811	/******************************************************************************	690	/******************************************************************************
812	* This is the start of unique map handling code	691	* This is the start of unique map handling code
813	*****************************************************************************/	692	*****************************************************************************/
814		693
…		…
821	int unique = 0;	700	int unique = 0;
822	for (object *op = spaces [i].bot; op; )	701	for (object *op = spaces [i].bot; op; )
823	{	702	{
824	object *above = op->above;	703	object *above = op->above;
825		704
826	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))	705	if (op->flag [FLAG_IS_FLOOR] && op->flag [FLAG_UNIQUE])
827	unique = 1;	706	unique = 1;
828		707
829	if (op->head == NULL && (QUERY_FLAG (op, FLAG_UNIQUE) || unique))	708	if (op->head_ () == op && (op->flag [FLAG_UNIQUE] || unique))
830	{
831	op->destroy_inv (false);
832	op->destroy ();	709	op->destroy ();
833	}
834		710
835	op = above;	711	op = above;
836	}	712	}
837	}	713	}
838	}	714	}
839		715
		716	//-GPL
		717
840	bool	718	bool
841	maptile::save_header (object_freezer &freezer)	719	maptile::_save_header (object_freezer &freezer)
842	{	720	{
843	#define MAP_OUT(k) freezer.put (KW_ ## k, k)	721	#define MAP_OUT(k) freezer.put (KW(k), k)
844	#define MAP_OUT2(k,v) freezer.put (KW_ ## k, v)	722	#define MAP_OUT2(k,v) freezer.put (KW(k), v)
845		723
846	MAP_OUT2 (arch, "map");	724	MAP_OUT2 (arch, CS(map));
847		725
848	if (name) MAP_OUT (name);	726	if (name) MAP_OUT (name);
849	MAP_OUT (swap_time);	727	MAP_OUT (swap_time);
850	MAP_OUT (reset_time);	728	MAP_OUT (reset_time);
851	MAP_OUT (reset_timeout);	729	MAP_OUT (reset_timeout);
852	MAP_OUT (fixed_resettime);	730	MAP_OUT (fixed_resettime);
		731	MAP_OUT (no_reset);
		732	MAP_OUT (no_drop);
853	MAP_OUT (difficulty);	733	MAP_OUT (difficulty);
854
855	if (region) MAP_OUT2 (region, region->name);	734	if (default_region) MAP_OUT2 (region, default_region->name);
856		735
857	if (shopitems)	736	if (shopitems) MAP_OUT2 (shopitems, print_shop_string (this));
858	{
859	char shop[MAX_BUF];
860	print_shop_string (this, shop);
861	MAP_OUT2 (shopitems, shop);
862	}
863
864	MAP_OUT (shopgreed);	737	MAP_OUT (shopgreed);
865	MAP_OUT (shopmin);	738	MAP_OUT (shopmin);
866	MAP_OUT (shopmax);	739	MAP_OUT (shopmax);
867	if (shoprace) MAP_OUT (shoprace);	740	if (shoprace) MAP_OUT (shoprace);
868	MAP_OUT (darkness);	741
869	MAP_OUT (width);	742	MAP_OUT (width);
870	MAP_OUT (height);	743	MAP_OUT (height);
871	MAP_OUT (enter_x);	744	MAP_OUT (enter_x);
872	MAP_OUT (enter_y);	745	MAP_OUT (enter_y);
873		746	MAP_OUT (darkness);
874	if (msg) freezer.put (KW_msg , KW_endmsg , msg);
875	if (maplore) freezer.put (KW_maplore, KW_endmaplore, maplore);
876
877	MAP_OUT (outdoor);	747	MAP_OUT (outdoor);
878	MAP_OUT (temp);	748
879	MAP_OUT (pressure);	749	if (msg) freezer.put (KW(msg) , KW(endmsg) , msg);
880	MAP_OUT (humid);	750	if (maplore) freezer.put (KW(maplore), KW(endmaplore), maplore);
881	MAP_OUT (windspeed);
882	MAP_OUT (winddir);
883	MAP_OUT (sky);
884		751
885	MAP_OUT (per_player);	752	MAP_OUT (per_player);
886	MAP_OUT (per_party);	753	MAP_OUT (per_party);
887		754
888	if (tile_path [0]) MAP_OUT2 (tile_path_1, tile_path [0]);	755	if (tile_path [0]) MAP_OUT2 (tile_path_1, tile_path [0]);
889	if (tile_path [1]) MAP_OUT2 (tile_path_2, tile_path [1]);	756	if (tile_path [1]) MAP_OUT2 (tile_path_2, tile_path [1]);
890	if (tile_path [2]) MAP_OUT2 (tile_path_3, tile_path [2]);	757	if (tile_path [2]) MAP_OUT2 (tile_path_3, tile_path [2]);
891	if (tile_path [3]) MAP_OUT2 (tile_path_4, tile_path [3]);	758	if (tile_path [3]) MAP_OUT2 (tile_path_4, tile_path [3]);
892		759
		760	freezer.put (this);
893	freezer.put (KW_end);	761	freezer.put (KW(end));
894		762
895	return true;	763	return true;
896	}	764	}
897		765
898	bool	766	bool
899	maptile::save_header (const char *path)	767	maptile::_save_header (const char *path)
900	{	768	{
901	object_freezer freezer;	769	object_freezer freezer;
902		770
903	if (!save_header (freezer))	771	if (!_save_header (freezer))
904	return false;	772	return false;
905		773
906	return freezer.save (path);	774	return freezer.save (path);
907	}	775	}
		776
		777	//+GPL
908		778
909	/*	779	/*
910	* Remove and free all objects in the given map.	780	* Remove and free all objects in the given map.
911	*/	781	*/
912	void	782	void
913	maptile::clear ()	783	maptile::clear ()
914	{	784	{
915	if (!spaces)	785	if (spaces)
916	return;	786	{
917
918	for (mapspace *ms = spaces + size (); ms-- > spaces; )	787	for (mapspace *ms = spaces + size (); ms-- > spaces; )
919	while (object *op = ms->bot)	788	while (object *op = ms->bot)
920	{	789	{
		790	// manually remove, as to not trigger anything
		791	if (ms->bot = op->above)
		792	ms->bot->below = 0;
		793
		794	op->flag [FLAG_REMOVED] = true;
		795
		796	object *head = op->head_ ();
921	if (op->head)	797	if (op == head)
922	op = op->head;
923
924	op->destroy_inv (false);
925	op->destroy ();	798	op->destroy ();
		799	else if (head->map != op->map)
		800	{
		801	LOG (llevDebug, "bad luck for object crossing map borders: %s", head->debug_desc ());
		802	head->destroy ();
		803	}
		804	}
		805
		806	sfree0 (spaces, size ());
926	}	807	}
927
928	sfree (spaces, size ()), spaces = 0;
929		808
930	if (buttons)	809	if (buttons)
931	free_objectlinkpt (buttons), buttons = 0;	810	free_objectlinkpt (buttons), buttons = 0;
		811
		812	sfree0 (regions, size ());
		813	delete [] regionmap; regionmap = 0;
932	}	814	}
933		815
934	void	816	void
935	maptile::clear_header ()	817	maptile::clear_header ()
936	{	818	{
…		…
968	attachable::do_destroy ();	850	attachable::do_destroy ();
969		851
970	clear ();	852	clear ();
971	}	853	}
972		854
973	/*	855	/* decay and destroy perishable items in a map */
974	* Updates every button on the map (by calling update_button() for them).	856	// TODO: should be done regularly, not on map load?
975	*/
976	void	857	void
977	maptile::update_buttons ()	858	maptile::do_decay_objects ()
978	{	859	{
979	for (oblinkpt *obp = buttons; obp; obp = obp->next)	860	if (!spaces)
980	for (objectlink *ol = obp->link; ol; ol = ol->next)	861	return;
		862
		863	for (mapspace *ms = spaces + size (); ms-- > spaces; )
		864	for (object *above, *op = ms->bot; op; op = above)
981	{	865	{
982	if (!ol->ob)	866	above = op->above;
		867
		868	// do not decay anything above unique floor tiles (yet :)
		869	if (op->flag [FLAG_IS_FLOOR] && op->flag [FLAG_UNIQUE])
		870	break;
		871
		872	bool destroy = 0;
		873
		874	if (op->flag [FLAG_IS_FLOOR]
		875	|| op->flag [FLAG_OBJ_ORIGINAL]
		876	|| op->flag [FLAG_UNIQUE]
		877	|| op->flag [FLAG_OVERLAY_FLOOR]
		878	|| op->flag [FLAG_UNPAID]
		879	|| op->is_alive ())
		880	; // do not decay
		881	else if (op->is_weapon ())
983	{	882	{
984	LOG (llevError, "Internal error in update_button (%s (%dx%d), connected %ld).\n",	883	op->stats.dam--;
985	ol->ob ? (const char *) ol->ob->name : "null", ol->ob ? ol->ob->x : -1, ol->ob ? ol->ob->y : -1, obp->value);	884	if (op->stats.dam < 0)
986	continue;	885	destroy = 1;
987	}	886	}
988		887	else if (op->is_armor ())
989	if (ol->ob->type == BUTTON || ol->ob->type == PEDESTAL)
990	{	888	{
991	update_button (ol->ob);	889	op->stats.ac--;
992	break;	890	if (op->stats.ac < 0)
		891	destroy = 1;
993	}	892	}
		893	else if (op->type == FOOD)
		894	{
		895	op->stats.food -= rndm (5, 20);
		896	if (op->stats.food < 0)
		897	destroy = 1;
		898	}
		899	else
		900	{
		901	int mat = op->materials;
		902
		903	if (mat & M_PAPER
		904	|| mat & M_LEATHER
		905	|| mat & M_WOOD
		906	|| mat & M_ORGANIC
		907	|| mat & M_CLOTH
		908	|| mat & M_LIQUID
		909	|| (mat & M_IRON && rndm (1, 5) == 1)
		910	|| (mat & M_GLASS && rndm (1, 2) == 1)
		911	|| ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
		912	|| ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
		913	//|| (mat & M_ICE && temp > 32)
		914	)
		915	destroy = 1;
		916	}
		917
		918	/* adjust overall chance below */
		919	if (destroy && rndm (0, 1))
		920	op->destroy ();
994	}	921	}
995	}	922	}
996		923
997	/*	924	/*
998	* This routine is supposed to find out the difficulty of the map.	925	* This routine is supposed to find out the difficulty of the map.
999	* difficulty does not have a lot to do with character level,	926	* difficulty does not have a lot to do with character level,
1000	* but does have a lot to do with treasure on the map.	927	* but does have a lot to do with treasure on the map.
1001	*	928	*
1002	* Difficulty can now be set by the map creature. If the value stored	929	* Difficulty can now be set by the map creator. If the value stored
1003	* in the map is zero, then use this routine. Maps should really	930	* in the map is zero, then use this routine. Maps should really
1004	* have a difficulty set than using this function - human calculation	931	* have a difficulty set rather than using this function - human calculation
1005	* is much better than this functions guesswork.	932	* is much better than this function's guesswork.
1006	*/	933	*/
1007	int	934	int
1008	maptile::estimate_difficulty () const	935	maptile::estimate_difficulty () const
1009	{	936	{
1010	long monster_cnt = 0;	937	long monster_cnt = 0;
…		…
1012	sint64 total_exp = 0;	939	sint64 total_exp = 0;
1013		940
1014	for (mapspace *ms = spaces + size (); ms-- > spaces; )	941	for (mapspace *ms = spaces + size (); ms-- > spaces; )
1015	for (object *op = ms->bot; op; op = op->above)	942	for (object *op = ms->bot; op; op = op->above)
1016	{	943	{
1017	if (QUERY_FLAG (op, FLAG_MONSTER))	944	if (op->flag [FLAG_MONSTER])
1018	{	945	{
1019	total_exp += op->stats.exp;	946	total_exp += op->stats.exp;
1020	monster_cnt++;	947	monster_cnt++;
1021	}	948	}
1022		949
1023	if (QUERY_FLAG (op, FLAG_GENERATOR))	950	if (op->flag [FLAG_GENERATOR])
1024	{	951	{
1025	total_exp += op->stats.exp;	952	total_exp += op->stats.exp;
1026		953
1027	if (archetype *at = type_to_archetype (GENERATE_TYPE (op)))	954	if (archetype *at = op->other_arch)
		955	{
1028	total_exp += at->clone.stats.exp * 8;	956	total_exp += at->stats.exp * 8;
1029
1030	monster_cnt++;	957	monster_cnt++;
		958	}
		959
		960	for (object *inv = op->inv; inv; inv = inv->below)
		961	{
		962	total_exp += op->stats.exp * 8;
		963	monster_cnt++;
		964	}
1031	}	965	}
1032	}	966	}
1033		967
1034	avgexp = (double) total_exp / monster_cnt;	968	avgexp = (double) total_exp / monster_cnt;
1035		969
…		…
1048	* postive values make it darker, negative make it brighter	982	* postive values make it darker, negative make it brighter
1049	*/	983	*/
1050	int	984	int
1051	maptile::change_map_light (int change)	985	maptile::change_map_light (int change)
1052	{	986	{
1053	int new_level = darkness + change;
1054
1055	/* Nothing to do */	987	/* Nothing to do */
1056	if (!change || (new_level <= 0 && darkness == 0) || (new_level >= MAX_DARKNESS && darkness >= MAX_DARKNESS))	988	if (!change)
1057	return 0;	989	return 0;
1058		990
1059	/* inform all players on the map */	991	/* inform all players on the map */
1060	if (change > 0)	992	if (change > 0)
1061	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");	993	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");
1062	else	994	else
1063	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");	995	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");
1064		996
1065	/* Do extra checking. since darkness is a unsigned value,	997	darkness = clamp (darkness + change, -MAX_DARKNESS, MAX_DARKNESS);
1066	* we need to be extra careful about negative values.
1067	* In general, the checks below are only needed if change
1068	* is not +/-1
1069	*/
1070	if (new_level < 0)
1071	darkness = 0;
1072	else if (new_level >= MAX_DARKNESS)
1073	darkness = MAX_DARKNESS;
1074	else
1075	darkness = new_level;
1076		998
1077	/* All clients need to get re-updated for the change */	999	/* All clients need to get re-updated for the change */
1078	update_all_map_los (this);	1000	update_all_map_los (this);
		1001
1079	return 1;	1002	return 1;
1080	}	1003	}
1081		1004
1082	/*	1005	/*
1083	* This function updates various attributes about a specific space	1006	* This function updates various attributes about a specific space
…		…
1086	* through, etc)	1009	* through, etc)
1087	*/	1010	*/
1088	void	1011	void
1089	mapspace::update_ ()	1012	mapspace::update_ ()
1090	{	1013	{
1091	object *tmp, *last = 0;	1014	object *last = 0;
1092	uint8 flags = 0, light = 0, anywhere = 0;	1015	uint8 flags = P_UPTODATE;
1093	New_Face *top, *floor, *middle;	1016	sint8 light = 0;
1094	object *top_obj, *floor_obj, *middle_obj;
1095	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;	1017	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;
		1018	uint64_t volume = 0;
		1019	uint32_t items = 0;
		1020	object *anywhere = 0;
		1021	uint8_t middle_visibility = 0;
1096		1022
1097	middle = blank_face;	1023	//object *middle = 0;
1098	top = blank_face;	1024	//object *top = 0;
1099	floor = blank_face;	1025	//object *floor = 0;
		1026	// this seems to generate better code than using locals, above
		1027	object *&top = faces_obj[0] = 0;
		1028	object *&middle = faces_obj[1] = 0;
		1029	object *&floor = faces_obj[2] = 0;
1100		1030
1101	middle_obj = 0;	1031	object::flags_t allflags; // all flags of all objects or'ed together
1102	top_obj = 0;
1103	floor_obj = 0;
1104		1032
1105	for (tmp = bot; tmp; last = tmp, tmp = tmp->above)	1033	for (object *tmp = bot; tmp; last = tmp, tmp = tmp->above)
1106	{	1034	{
1107	/* This could be made additive I guess (two lights better than	1035	// Lights are additive, up to MAX_LIGHT_RADIUS, see los.C)
1108	* one). But if so, it shouldn't be a simple additive - 2
1109	* light bulbs do not illuminate twice as far as once since
1110	* it is a dissapation factor that is cubed.
1111	*/
1112	if (tmp->glow_radius > light)
1113	light = tmp->glow_radius;	1036	light += tmp->glow_radius;
1114		1037
1115	/* This call is needed in order to update objects the player	1038	/* This call is needed in order to update objects the player
1116	* is standing in that have animations (ie, grass, fire, etc).	1039	* is standing in that have animations (ie, grass, fire, etc).
1117	* However, it also causes the look window to be re-drawn	1040	* However, it also causes the look window to be re-drawn
1118	* 3 times each time the player moves, because many of the	1041	* 3 times each time the player moves, because many of the
1119	* functions the move_player calls eventualy call this.	1042	* functions the move_player calls eventualy call this.
1120	*	1043	*
1121	* Always put the player down for drawing.	1044	* Always put the player down for drawing.
1122	*/	1045	*/
1123	if (!tmp->invisible)	1046	if (expect_true (!tmp->invisible))
1124	{	1047	{
1125	if ((tmp->type == PLAYER || QUERY_FLAG (tmp, FLAG_MONSTER)))	1048	if (expect_false (tmp->type == PLAYER || tmp->flag [FLAG_MONSTER]))
1126	{
1127	top = tmp->face;
1128	top_obj = tmp;	1049	top = tmp;
1129	}	1050	else if (expect_false (tmp->flag [FLAG_IS_FLOOR]))
1130	else if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1131	{	1051	{
1132	/* If we got a floor, that means middle and top were below it,	1052	/* If we got a floor, that means middle and top were below it,
1133	* so should not be visible, so we clear them.	1053	* so should not be visible, so we clear them.
1134	*/	1054	*/
1135	middle = blank_face;	1055	middle = 0;
1136	top = blank_face;	1056	top = 0;
1137	floor = tmp->face;
1138	floor_obj = tmp;	1057	floor = tmp;
		1058	volume = 0;
		1059	items = 0;
1139	}	1060	}
1140	/* Flag anywhere have high priority */	1061	else
1141	else if (QUERY_FLAG (tmp, FLAG_SEE_ANYWHERE))
1142	{	1062	{
1143	middle = tmp->face;	1063	if (expect_true (!tmp->flag [FLAG_NO_PICK]))
		1064	{
		1065	++items;
		1066	volume += tmp->volume ();
		1067	}
1144		1068
1145	middle_obj = tmp;	1069	/* Flag anywhere have high priority */
		1070	if (expect_false (tmp->flag [FLAG_SEE_ANYWHERE]))
1146	anywhere = 1;	1071	anywhere = tmp;
		1072
		1073	/* Find the highest visible face around. If equal
		1074	* visibilities, we still want the one nearer to the
		1075	* top
		1076	*/
		1077	if (expect_false (::faces [tmp->face].visibility >= middle_visibility))
		1078	{
		1079	middle_visibility = ::faces [tmp->face].visibility;
		1080	middle = tmp;
		1081	}
1147	}	1082	}
1148	/* Find the highest visible face around. If equal
1149	* visibilities, we still want the one nearer to the
1150	* top
1151	*/
1152	else if (middle == blank_face || (tmp->face->visibility > middle->visibility && !anywhere))
1153	{
1154	middle = tmp->face;
1155	middle_obj = tmp;
1156	}
1157	}
1158
1159	if (tmp == tmp->above)
1160	{
1161	LOG (llevError, "Error in structure of map\n");
1162	exit (-1);
1163	}	1083	}
1164		1084
1165	move_slow |= tmp->move_slow;	1085	move_slow |= tmp->move_slow;
1166	move_block |= tmp->move_block;	1086	move_block |= tmp->move_block;
1167	move_on |= tmp->move_on;	1087	move_on |= tmp->move_on;
1168	move_off |= tmp->move_off;	1088	move_off |= tmp->move_off;
1169	move_allow |= tmp->move_allow;	1089	move_allow |= tmp->move_allow;
1170		1090
1171	if (QUERY_FLAG (tmp, FLAG_BLOCKSVIEW)) flags |= P_BLOCKSVIEW;	1091	allflags |= tmp->flag;
1172	if (QUERY_FLAG (tmp, FLAG_NO_MAGIC)) flags |= P_NO_MAGIC;	1092
1173	if (tmp->type == PLAYER) flags |= P_PLAYER;	1093	if (tmp->type == PLAYER) flags |= P_PLAYER;
1174	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;	1094	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;
1175	if (QUERY_FLAG (tmp, FLAG_ALIVE)) flags |= P_IS_ALIVE;
1176	if (QUERY_FLAG (tmp, FLAG_DAMNED)) flags |= P_NO_CLERIC;
1177	}	1095	}
1178		1096
1179	this->light = light;	1097	// FLAG_SEE_ANYWHERE takes precedence
		1098	if (anywhere)
		1099	middle = anywhere;
		1100
		1101	// ORing all flags together and checking them here is much faster
		1102	if (allflags [FLAG_BLOCKSVIEW]) flags |= P_BLOCKSVIEW;
		1103	if (allflags [FLAG_NO_MAGIC] ) flags |= P_NO_MAGIC;
		1104	if (allflags [FLAG_ALIVE] ) flags |= P_IS_ALIVE;
		1105	if (allflags [FLAG_DAMNED] ) flags |= P_NO_CLERIC;
		1106
		1107	this->light = min (light, MAX_LIGHT_RADIUS);
1180	this->flags_ = flags;	1108	this->flags_ = flags;
1181	this->move_block = move_block & ~move_allow;	1109	this->move_block = move_block & ~move_allow;
1182	this->move_on = move_on;	1110	this->move_on = move_on;
1183	this->move_off = move_off;	1111	this->move_off = move_off;
1184	this->move_slow = move_slow;	1112	this->move_slow = move_slow;
		1113	this->volume_ = (volume + 1023) / 1024;
		1114	this->items_ = upos_min (items, 65535); // assume nrof <= 2**31
1185		1115
1186	/* At this point, we have a floor face (if there is a floor),	1116	/* At this point, we have a floor face (if there is a floor),
1187	* and the floor is set - we are not going to touch it at	1117	* and the floor is set - we are not going to touch it at
1188	* this point.	1118	* this point.
1189	* middle contains the highest visibility face.	1119	* middle contains the highest visibility face.
…		…
1196	* middle face. This should not happen, as we already have the	1126	* middle face. This should not happen, as we already have the
1197	* else statement above so middle should not get set. OTOH, it	1127	* else statement above so middle should not get set. OTOH, it
1198	* may be possible for the faces to match but be different objects.	1128	* may be possible for the faces to match but be different objects.
1199	*/	1129	*/
1200	if (top == middle)	1130	if (top == middle)
1201	middle = blank_face;	1131	middle = 0;
1202		1132
1203	/* There are three posibilities at this point:	1133	/* There are three posibilities at this point:
1204	* 1) top face is set, need middle to be set.	1134	* 1) top face is set, need middle to be set.
1205	* 2) middle is set, need to set top.	1135	* 2) middle is set, need to set top.
1206	* 3) neither middle or top is set - need to set both.	1136	* 3) neither middle or top is set - need to set both.
1207	*/	1137	*/
1208		1138
1209	for (tmp = last; tmp; tmp = tmp->below)	1139	for (object *tmp = last; tmp; tmp = tmp->below)
1210	{	1140	{
1211	/* Once we get to a floor, stop, since we already have a floor object */	1141	/* Once we get to a floor, stop, since we already have a floor object */
1212	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1142	if (tmp->flag [FLAG_IS_FLOOR])
1213	break;	1143	break;
1214		1144
1215	/* If two top faces are already set, quit processing */	1145	/* If two top faces are already set, quit processing */
1216	if ((top != blank_face) && (middle != blank_face))	1146	if (top && middle)
1217	break;	1147	break;
1218		1148
1219	/* Only show visible faces, unless its the editor - show all */	1149	/* Only show visible faces */
1220	if (!tmp->invisible || editor)	1150	if (!tmp->invisible)
1221	{	1151	{
1222	/* Fill in top if needed */	1152	/* Fill in top if needed */
1223	if (top == blank_face)	1153	if (!top)
1224	{	1154	{
1225	top = tmp->face;
1226	top_obj = tmp;	1155	top = tmp;
1227	if (top == middle)	1156	if (top == middle)
1228	middle = blank_face;	1157	middle = 0;
1229	}	1158	}
1230	else	1159	else
1231	{	1160	{
1232	/* top is already set - we should only get here if	1161	/* top is already set - we should only get here if
1233	* middle is not set	1162	* middle is not set
1234	*	1163	*
1235	* Set the middle face and break out, since there is nothing	1164	* Set the middle face and break out, since there is nothing
1236	* more to fill in. We don't check visiblity here, since	1165	* more to fill in. We don't check visiblity here, since
1237	*	1166	*
1238	*/	1167	*/
1239	if (tmp->face != top)	1168	if (tmp != top)
1240	{	1169	{
1241	middle = tmp->face;
1242	middle_obj = tmp;	1170	middle = tmp;
1243	break;	1171	break;
1244	}	1172	}
1245	}	1173	}
1246	}	1174	}
1247	}	1175	}
1248		1176
1249	if (middle == floor)	1177	if (middle == floor)
1250	middle = blank_face;	1178	middle = 0;
1251		1179
1252	if (top == middle)	1180	if (top == middle)
1253	middle = blank_face;	1181	middle = 0;
1254		1182
1255	faces [0] = top; faces_obj [0] = top != blank_face ? top_obj : 0;	1183	#if 0
1256	faces [1] = middle; faces_obj [1] = middle != blank_face ? middle_obj : 0;	1184	faces_obj [0] = top;
1257	faces [2] = floor; faces_obj [2] = floor != blank_face ? floor_obj : 0;	1185	faces_obj [1] = middle;
		1186	faces_obj [2] = floor;
		1187	#endif
1258	}	1188	}
1259		1189
1260	/* this updates the orig_map->tile_map[tile_num] value after loading	1190	maptile *
1261	* the map. It also takes care of linking back the freshly loaded	1191	maptile::tile_available (int dir, bool load)
1262	* maps tile_map values if it tiles back to this one. It returns
1263	* the value of orig_map->tile_map[tile_num]. It really only does this
1264	* so that it is easier for calling functions to verify success.
1265	*/
1266	static maptile *
1267	load_and_link_tiled_map (maptile *orig_map, int tile_num)
1268	{	1192	{
1269	maptile *mp = orig_map->load_map_sync (orig_map->tile_path [tile_num], orig_map);	1193	if (tile_path[dir])
1270
1271	if (!mp || mp->in_memory != MAP_IN_MEMORY)
1272	{
1273	// emergency mode, manufacture a dummy map, this creates a memleak, but thats fine
1274	LOG (llevError, "FATAL: cannot load tiled map %s from %s, leaking memory and worse!\n",
1275	&orig_map->tile_path[tile_num], &orig_map->path);
1276	mp = new maptile (1, 1);
1277	mp->alloc ();
1278	mp->in_memory = MAP_IN_MEMORY;
1279	}	1194	{
		1195	if (tile_map[dir] && (!load || tile_map[dir]->in_memory == MAP_ACTIVE))
		1196	return tile_map[dir];
1280		1197
1281	int dest_tile = (tile_num + 2) % 4;	1198	if ((tile_map[dir] = find_async (tile_path[dir], this, load)))
		1199	return tile_map[dir];
		1200	}
1282		1201
1283	orig_map->tile_map[tile_num] = mp;
1284
1285	// optimisation: back-link map to origin map if euclidean
1286	//TODO: non-euclidean maps MUST GO
1287	if (orig_map->tile_map[tile_num]->tile_path[dest_tile] == orig_map->path)
1288	orig_map->tile_map[tile_num]->tile_map[dest_tile] = orig_map;
1289
1290	return mp;	1202	return 0;
1291	}	1203	}
1292		1204
1293	/* this returns TRUE if the coordinates (x,y) are out of	1205	/* this returns TRUE if the coordinates (x,y) are out of
1294	* map m. This function also takes into account any	1206	* map m. This function also takes into account any
1295	* tiling considerations, loading adjacant maps as needed.	1207	* tiling considerations, loading adjacant maps as needed.
…		…
1308	if (!m)	1220	if (!m)
1309	return 0;	1221	return 0;
1310		1222
1311	if (x < 0)	1223	if (x < 0)
1312	{	1224	{
1313	if (!m->tile_path[3])	1225	if (!m->tile_available (3))
1314	return 1;	1226	return 1;
1315		1227
1316	if (!m->tile_map[3] || m->tile_map[3]->in_memory != MAP_IN_MEMORY)
1317	load_and_link_tiled_map (m, 3);
1318
1319	return out_of_map (m->tile_map[3], x + m->tile_map[3]->width, y);	1228	return out_of_map (m->tile_map[3], x + m->tile_map[3]->width, y);
1320	}	1229	}
1321		1230
1322	if (x >= m->width)	1231	if (x >= m->width)
1323	{	1232	{
1324	if (!m->tile_path[1])	1233	if (!m->tile_available (1))
1325	return 1;	1234	return 1;
1326		1235
1327	if (!m->tile_map[1] || m->tile_map[1]->in_memory != MAP_IN_MEMORY)
1328	load_and_link_tiled_map (m, 1);
1329
1330	return out_of_map (m->tile_map[1], x - m->width, y);	1236	return out_of_map (m->tile_map[1], x - m->width, y);
1331	}	1237	}
1332		1238
1333	if (y < 0)	1239	if (y < 0)
1334	{	1240	{
1335	if (!m->tile_path[0])	1241	if (!m->tile_available (0))
1336	return 1;	1242	return 1;
1337		1243
1338	if (!m->tile_map[0] || m->tile_map[0]->in_memory != MAP_IN_MEMORY)
1339	load_and_link_tiled_map (m, 0);
1340
1341	return out_of_map (m->tile_map[0], x, y + m->tile_map[0]->height);	1244	return out_of_map (m->tile_map[0], x, y + m->tile_map[0]->height);
1342	}	1245	}
1343		1246
1344	if (y >= m->height)	1247	if (y >= m->height)
1345	{	1248	{
1346	if (!m->tile_path[2])	1249	if (!m->tile_available (2))
1347	return 1;	1250	return 1;
1348
1349	if (!m->tile_map[2] || m->tile_map[2]->in_memory != MAP_IN_MEMORY)
1350	load_and_link_tiled_map (m, 2);
1351		1251
1352	return out_of_map (m->tile_map[2], x, y - m->height);	1252	return out_of_map (m->tile_map[2], x, y - m->height);
1353	}	1253	}
1354		1254
1355	/* Simple case - coordinates are within this local	1255	/* Simple case - coordinates are within this local
…		…
1360		1260
1361	/* This is basically the same as out_of_map above, but	1261	/* This is basically the same as out_of_map above, but
1362	* instead we return NULL if no map is valid (coordinates	1262	* instead we return NULL if no map is valid (coordinates
1363	* out of bounds and no tiled map), otherwise it returns	1263	* out of bounds and no tiled map), otherwise it returns
1364	* the map as that the coordinates are really on, and	1264	* the map as that the coordinates are really on, and
1365	* updates x and y to be the localized coordinates.	1265	* updates x and y to be the localised coordinates.
1366	* Using this is more efficient of calling out_of_map	1266	* Using this is more efficient of calling out_of_map
1367	* and then figuring out what the real map is	1267	* and then figuring out what the real map is
1368	*/	1268	*/
1369	maptile *	1269	maptile *
1370	get_map_from_coord (maptile *m, sint16 *x, sint16 *y)	1270	maptile::xy_find (sint16 &x, sint16 &y)
1371	{	1271	{
1372	if (*x < 0)	1272	if (x < 0)
1373	{	1273	{
1374	if (!m->tile_path[3])	1274	if (!tile_available (3))
1375	return 0;	1275	return 0;
1376		1276
1377	if (!m->tile_map[3] || m->tile_map[3]->in_memory != MAP_IN_MEMORY)
1378	load_and_link_tiled_map (m, 3);
1379
1380	*x += m->tile_map[3]->width;	1277	x += tile_map[3]->width;
1381	return (get_map_from_coord (m->tile_map[3], x, y));	1278	return tile_map[3]->xy_find (x, y);
1382	}	1279	}
1383		1280
1384	if (*x >= m->width)	1281	if (x >= width)
1385	{	1282	{
1386	if (!m->tile_path[1])	1283	if (!tile_available (1))
1387	return 0;	1284	return 0;
1388		1285
1389	if (!m->tile_map[1] || m->tile_map[1]->in_memory != MAP_IN_MEMORY)
1390	load_and_link_tiled_map (m, 1);
1391
1392	*x -= m->width;	1286	x -= width;
1393	return (get_map_from_coord (m->tile_map[1], x, y));	1287	return tile_map[1]->xy_find (x, y);
1394	}	1288	}
1395		1289
1396	if (*y < 0)	1290	if (y < 0)
1397	{	1291	{
1398	if (!m->tile_path[0])	1292	if (!tile_available (0))
1399	return 0;	1293	return 0;
1400		1294
1401	if (!m->tile_map[0] || m->tile_map[0]->in_memory != MAP_IN_MEMORY)
1402	load_and_link_tiled_map (m, 0);
1403
1404	*y += m->tile_map[0]->height;	1295	y += tile_map[0]->height;
1405	return (get_map_from_coord (m->tile_map[0], x, y));	1296	return tile_map[0]->xy_find (x, y);
1406	}	1297	}
1407		1298
1408	if (*y >= m->height)	1299	if (y >= height)
1409	{	1300	{
1410	if (!m->tile_path[2])	1301	if (!tile_available (2))
1411	return 0;	1302	return 0;
1412		1303
1413	if (!m->tile_map[2] || m->tile_map[2]->in_memory != MAP_IN_MEMORY)
1414	load_and_link_tiled_map (m, 2);
1415
1416	*y -= m->height;	1304	y -= height;
1417	return (get_map_from_coord (m->tile_map[2], x, y));	1305	return tile_map[2]->xy_find (x, y);
1418	}	1306	}
1419		1307
1420	/* Simple case - coordinates are within this local	1308	/* Simple case - coordinates are within this local
1421	* map.	1309	* map.
1422	*/	1310	*/
1423	return m;	1311	return this;
1424	}	1312	}
1425		1313
1426	/**	1314	/**
1427	* Return whether map2 is adjacent to map1. If so, store the distance from	1315	* Return whether map2 is adjacent to map1. If so, store the distance from
1428	* map1 to map2 in dx/dy.	1316	* map1 to map2 in dx/dy.
1429	*/	1317	*/
1430	static int	1318	int
1431	adjacent_map (const maptile *map1, const maptile *map2, int *dx, int *dy)	1319	adjacent_map (const maptile *map1, const maptile *map2, int *dx, int *dy)
1432	{	1320	{
1433	if (!map1 || !map2)	1321	if (!map1 || !map2)
1434	return 0;	1322	return 0;
1435		1323
		1324	//TODO: this doesn't actually check correctly when intermediate maps are not loaded
		1325	//fix: compare paths instead (this is likely faster, too!)
1436	if (map1 == map2)	1326	if (map1 == map2)
1437	{	1327	{
1438	*dx = 0;	1328	*dx = 0;
1439	*dy = 0;	1329	*dy = 0;
1440	}	1330	}
…		…
1500	}	1390	}
1501	else	1391	else
1502	return 0;	1392	return 0;
1503		1393
1504	return 1;	1394	return 1;
		1395	}
		1396
		1397	maptile *
		1398	maptile::xy_load (sint16 &x, sint16 &y)
		1399	{
		1400	maptile *map = xy_find (x, y);
		1401
		1402	if (map)
		1403	map->load_sync ();
		1404
		1405	return map;
		1406	}
		1407
		1408	maptile *
		1409	get_map_from_coord (maptile *m, sint16 *x, sint16 *y)
		1410	{
		1411	return m->xy_load (*x, *y);
1505	}	1412	}
1506		1413
1507	/* From map.c	1414	/* From map.c
1508	* This is used by get_player to determine where the other	1415	* This is used by get_player to determine where the other
1509	* creature is. get_rangevector takes into account map tiling,	1416	* creature is. get_rangevector takes into account map tiling,
1510	* so you just can not look the the map coordinates and get the	1417	* so you just can not look the the map coordinates and get the
1511	* righte value. distance_x/y are distance away, which	1418	* righte value. distance_x/y are distance away, which
1512	* can be negativbe. direction is the crossfire direction scheme	1419	* can be negative. direction is the crossfire direction scheme
1513	* that the creature should head. part is the part of the	1420	* that the creature should head. part is the part of the
1514	* monster that is closest.	1421	* monster that is closest.
1515	*	1422	*
1516	* get_rangevector looks at op1 and op2, and fills in the	1423	* get_rangevector looks at op1 and op2, and fills in the
1517	* structure for op1 to get to op2.	1424	* structure for op1 to get to op2.
…		…
1523	*	1430	*
1524	* currently, the only flag supported (0x1) is don't translate for	1431	* currently, the only flag supported (0x1) is don't translate for
1525	* closest body part of 'op1'	1432	* closest body part of 'op1'
1526	*/	1433	*/
1527	void	1434	void
1528	get_rangevector (object *op1, object *op2, rv_vector * retval, int flags)	1435	get_rangevector (object *op1, object *op2, rv_vector *retval, int flags)
1529	{	1436	{
1530	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))	1437	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))
1531	{	1438	{
1532	/* be conservative and fill in _some_ data */	1439	/* be conservative and fill in _some_ data */
1533	retval->distance = 100000;	1440	retval->distance = 10000;
1534	retval->distance_x = 32767;	1441	retval->distance_x = 10000;
1535	retval->distance_y = 32767;	1442	retval->distance_y = 10000;
1536	retval->direction = 0;	1443	retval->direction = 0;
1537	retval->part = 0;	1444	retval->part = 0;
1538	}	1445	}
1539	else	1446	else
1540	{	1447	{
1541	object *best;
1542
1543	retval->distance_x += op2->x - op1->x;	1448	retval->distance_x += op2->x - op1->x;
1544	retval->distance_y += op2->y - op1->y;	1449	retval->distance_y += op2->y - op1->y;
1545		1450
1546	best = op1;	1451	object *best = op1;
		1452
1547	/* If this is multipart, find the closest part now */	1453	/* If this is multipart, find the closest part now */
1548	if (!(flags & 0x1) && op1->more)	1454	if (!(flags & 1) && op1->more)
1549	{	1455	{
1550	object *tmp;	1456	int best_distance = idistance (retval->distance_x, retval->distance_y);
1551	int best_distance = retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y, tmpi;
1552		1457
1553	/* we just take the offset of the piece to head to figure	1458	/* we just take the offset of the piece to head to figure
1554	* distance instead of doing all that work above again	1459	* distance instead of doing all that work above again
1555	* since the distance fields we set above are positive in the	1460	* since the distance fields we set above are positive in the
1556	* same axis as is used for multipart objects, the simply arithmetic	1461	* same axis as is used for multipart objects, the simply arithmetic
1557	* below works.	1462	* below works.
1558	*/	1463	*/
1559	for (tmp = op1->more; tmp != NULL; tmp = tmp->more)	1464	for (object *tmp = op1->more; tmp; tmp = tmp->more)
1560	{	1465	{
1561	tmpi = (op1->x - tmp->x + retval->distance_x) * (op1->x - tmp->x + retval->distance_x) +	1466	int tmpi = idistance (op1->x - tmp->x + retval->distance_x, op1->y - tmp->y + retval->distance_y);
1562	(op1->y - tmp->y + retval->distance_y) * (op1->y - tmp->y + retval->distance_y);	1467
1563	if (tmpi < best_distance)	1468	if (tmpi < best_distance)
1564	{	1469	{
1565	best_distance = tmpi;	1470	best_distance = tmpi;
1566	best = tmp;	1471	best = tmp;
1567	}	1472	}
1568	}	1473	}
		1474
1569	if (best != op1)	1475	if (best != op1)
1570	{	1476	{
1571	retval->distance_x += op1->x - best->x;	1477	retval->distance_x += op1->x - best->x;
1572	retval->distance_y += op1->y - best->y;	1478	retval->distance_y += op1->y - best->y;
1573	}	1479	}
1574	}	1480	}
		1481
1575	retval->part = best;	1482	retval->part = best;
1576	retval->distance = isqrt (retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y);	1483	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1577	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1484	retval->direction = find_dir_2 (retval->distance_x, retval->distance_y);
1578	}	1485	}
1579	}	1486	}
1580		1487
1581	/* this is basically the same as get_rangevector above, but instead of	1488	/* this is basically the same as get_rangevector above, but instead of
1582	* the first parameter being an object, it instead is the map	1489	* the first parameter being an object, it instead is the map
…		…
1586	* flags has no meaning for this function at this time - I kept it in to	1493	* flags has no meaning for this function at this time - I kept it in to
1587	* be more consistant with the above function and also in case they are needed	1494	* be more consistant with the above function and also in case they are needed
1588	* for something in the future. Also, since no object is pasted, the best	1495	* for something in the future. Also, since no object is pasted, the best
1589	* field of the rv_vector is set to NULL.	1496	* field of the rv_vector is set to NULL.
1590	*/	1497	*/
1591
1592	void	1498	void
1593	get_rangevector_from_mapcoord (const maptile *m, int x, int y, const object *op2, rv_vector * retval, int flags)	1499	get_rangevector_from_mapcoord (const maptile *m, int x, int y, const object *op2, rv_vector *retval, int flags)
1594	{	1500	{
1595	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))	1501	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))
1596	{	1502	{
1597	/* be conservative and fill in _some_ data */	1503	/* be conservative and fill in _some_ data */
1598	retval->distance = 100000;	1504	retval->distance = 100000;
1599	retval->distance_x = 32767;	1505	retval->distance_x = 32767;
1600	retval->distance_y = 32767;	1506	retval->distance_y = 32767;
1601	retval->direction = 0;	1507	retval->direction = 0;
1602	retval->part = 0;	1508	retval->part = 0;
1603	}	1509	}
1604	else	1510	else
1605	{	1511	{
1606	retval->distance_x += op2->x - x;	1512	retval->distance_x += op2->x - x;
1607	retval->distance_y += op2->y - y;	1513	retval->distance_y += op2->y - y;
1608		1514
1609	retval->part = NULL;	1515	retval->part = 0;
1610	retval->distance = isqrt (retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y);	1516	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1611	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1517	retval->direction = find_dir_2 (retval->distance_x, retval->distance_y);
1612	}	1518	}
1613	}	1519	}
1614		1520
1615	/* Returns true of op1 and op2 are effectively on the same map	1521	/* Returns true of op1 and op2 are effectively on the same map
1616	* (as related to map tiling). Note that this looks for a path from	1522	* (as related to map tiling). Note that this looks for a path from
…		…
1626	int dx, dy;	1532	int dx, dy;
1627		1533
1628	return adjacent_map (op1->map, op2->map, &dx, &dy);	1534	return adjacent_map (op1->map, op2->map, &dx, &dy);
1629	}	1535	}
1630		1536
		1537	//-GPL
		1538
1631	object *	1539	object *
1632	maptile::insert (object *op, int x, int y, object *originator, int flags)	1540	maptile::insert (object *op, int x, int y, object *originator, int flags)
1633	{	1541	{
1634	if (!op->flag [FLAG_REMOVED])
1635	op->remove ();
1636
1637	return insert_ob_in_map_at (op, this, originator, flags, x, y);	1542	return insert_ob_in_map_at (op, this, originator, flags, x, y);
1638	}	1543	}
1639		1544
		1545	region *
		1546	maptile::region (int x, int y) const
		1547	{
		1548	if (regions
		1549	&& regionmap
		1550	&& !OUT_OF_REAL_MAP (this, x, y))
		1551	if (struct region *reg = regionmap [regions [y * width + x]])
		1552	return reg;
		1553
		1554	if (default_region)
		1555	return default_region;
		1556
		1557	return ::region::default_region ();
		1558	}
		1559
		1560	//+GPL
		1561
		1562	/* picks a random object from a style map.
		1563	*/
		1564	object *
		1565	maptile::pick_random_object (rand_gen &gen) const
		1566	{
		1567	/* while returning a null object will result in a crash, that
		1568	* is actually preferable to an infinite loop. That is because
		1569	* most servers will automatically restart in case of crash.
		1570	* Change the logic on getting the random space - shouldn't make
		1571	* any difference, but this seems clearer to me.
		1572	*/
		1573	for (int i = 1000; --i;)
		1574	{
		1575	object *pick = at (gen (width), gen (height)).bot;
		1576
		1577	// must be head: do not prefer big monsters just because they are big.
		1578	if (pick && pick->is_head ())
		1579	return pick;
		1580	}
		1581
		1582	// instead of crashing in the unlikely(?) case, try to return *something*
		1583	return archetype::find (shstr_bug);
		1584	}
		1585
		1586	//-GPL
		1587
		1588	void
		1589	maptile::play_sound (faceidx sound, int x, int y) const
		1590	{
		1591	if (!sound)
		1592	return;
		1593
		1594	for_all_players_on_map (pl, this)
		1595	if (client *ns = pl->ns)
		1596	{
		1597	int dx = x - pl->ob->x;
		1598	int dy = y - pl->ob->y;
		1599
		1600	int distance = idistance (dx, dy);
		1601
		1602	if (distance <= MAX_SOUND_DISTANCE)
		1603	ns->play_sound (sound, dx, dy);
		1604	}
		1605	}
		1606
		1607	void
		1608	maptile::say_msg (const char *msg, int x, int y) const
		1609	{
		1610	for_all_players (pl)
		1611	if (client *ns = pl->ns)
		1612	{
		1613	int dx = x - pl->ob->x;
		1614	int dy = y - pl->ob->y;
		1615
		1616	int distance = idistance (dx, dy);
		1617
		1618	if (distance <= MAX_SOUND_DISTANCE)
		1619	ns->send_msg (NDI_GREY | NDI_DEF, SAY_CHANNEL, msg);
		1620	}
		1621	}
		1622
		1623	dynbuf mapwalk_buf (sizeof (maprect) * 25, sizeof (maprect) * 25);
		1624
		1625	static void
		1626	split_to_tiles (dynbuf &buf, maptile *m, int x0, int y0, int x1, int y1, int dx, int dy)
		1627	{
		1628	// clip to map to the left
		1629	if (x0 < 0)
		1630	{
		1631	if (maptile *tile = m->tile_available (TILE_LEFT, 1))
		1632	split_to_tiles (buf, tile, x0 + tile->width, y0, min (x1 + tile->width, tile->width), y1, dx - tile->width, dy);
		1633
		1634	if (x1 < 0) // entirely to the left
		1635	return;
		1636
		1637	x0 = 0;
		1638	}
		1639
		1640	// clip to map to the right
		1641	if (x1 > m->width)
		1642	{
		1643	if (maptile *tile = m->tile_available (TILE_RIGHT, 1))
		1644	split_to_tiles (buf, tile, max (x0 - m->width, 0), y0, x1 - m->width, y1, dx + m->width, dy);
		1645
		1646	if (x0 > m->width) // entirely to the right
		1647	return;
		1648
		1649	x1 = m->width;
		1650	}
		1651
		1652	// clip to map above
		1653	if (y0 < 0)
		1654	{
		1655	if (maptile *tile = m->tile_available (TILE_UP, 1))
		1656	split_to_tiles (buf, tile, x0, y0 + tile->height, x1, min (y1 + tile->height, tile->height), dx, dy - tile->height);
		1657
		1658	if (y1 < 0) // entirely above
		1659	return;
		1660
		1661	y0 = 0;
		1662	}
		1663
		1664	// clip to map below
		1665	if (y1 > m->height)
		1666	{
		1667	if (maptile *tile = m->tile_available (TILE_DOWN, 1))
		1668	split_to_tiles (buf, tile, x0, max (y0 - m->height, 0), x1, y1 - m->height, dx, dy + m->height);
		1669
		1670	if (y0 > m->height) // entirely below
		1671	return;
		1672
		1673	y1 = m->height;
		1674	}
		1675
		1676	// if we get here, the rect is within the current map
		1677	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1678
		1679	r->m = m;
		1680	r->x0 = x0;
		1681	r->y0 = y0;
		1682	r->x1 = x1;
		1683	r->y1 = y1;
		1684	r->dx = dx;
		1685	r->dy = dy;
		1686	}
		1687
		1688	maprect *
		1689	maptile::split_to_tiles (dynbuf &buf, int x0, int y0, int x1, int y1)
		1690	{
		1691	buf.clear ();
		1692
		1693	::split_to_tiles (buf, this, x0, y0, x1, y1, 0, 0);
		1694
		1695	// add end marker
		1696	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1697	r->m = 0;
		1698
		1699	return (maprect *)buf.linearise ();
		1700	}
		1701

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