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Comparing deliantra/server/common/map.C (file contents):
Revision 1.103 by root, Thu May 17 23:35:19 2007 UTC vs.
Revision 1.203 by root, Sat Apr 23 04:56:46 2011 UTC

1	/*	1	/*
2	* CrossFire, A Multiplayer game	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*	3	*
4	* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team	4	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (C) 2001-2003 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001-2003 Mark Wedel & Crossfire Development Team
6	* Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
7	*	7	*
8	* 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
9	* 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
10	* the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
11	* (at your option) any later version.	11	* option) any later version.
12	*	12	*
13	* 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,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	* GNU General Public License for more details.	16	* GNU General Public License for more details.
17	*	17	*
18	* 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
19	* 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
20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
21	*	21	*
22	* 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>
23	*/	23	*/
24		24
25	#include <unistd.h>	25	#include <unistd.h>
26		26
27	#include "global.h"	27	#include "global.h"
28	#include "funcpoint.h"
29
30	#include "loader.h"
31
32	#include "path.h"	28	#include "path.h"
33		29
34	/*	30	//+GPL
35	* This makes a path absolute outside the world of Crossfire.
36	* In other words, it prepends LIBDIR/MAPDIR/ to the given path
37	* and returns the pointer to a static array containing the result.
38	* it really should be called create_mapname
39	*/
40	const char *
41	create_pathname (const char *name)
42	{
43	static char buf[8192];
44	snprintf (buf, sizeof (buf), "%s/%s/%s", settings.datadir, settings.mapdir, name);
45	return buf;
46	}
47		31
48	/*	32	sint8 maptile::outdoor_darkness;
49	* This function checks if a file with the given path exists.
50	* -1 is returned if it fails, otherwise the mode of the file
51	* is returned.
52	* It tries out all the compression suffixes listed in the uncomp[] array.
53	*
54	* If prepend_dir is set, then we call create_pathname (which prepends
55	* libdir & mapdir). Otherwise, we assume the name given is fully
56	* complete.
57	* Only the editor actually cares about the writablity of this -
58	* the rest of the code only cares that the file is readable.
59	* when the editor goes away, the call to stat should probably be
60	* replaced by an access instead (similar to the windows one, but
61	* that seems to be missing the prepend_dir processing
62	*/
63	int
64	check_path (const char *name, int prepend_dir)
65	{
66	char buf[MAX_BUF];
67
68	char *endbuf;
69	struct stat statbuf;
70	int mode = 0;
71
72	if (prepend_dir)
73	assign (buf, create_pathname (name));
74	else
75	assign (buf, name);
76
77	/* old method (strchr(buf, '\0')) seemd very odd to me -
78	* this method should be equivalant and is clearer.
79	* Can not use strcat because we need to cycle through
80	* all the names.
81	*/
82	endbuf = buf + strlen (buf);
83
84	if (stat (buf, &statbuf))
85	return -1;
86	if (!S_ISREG (statbuf.st_mode))
87	return (-1);
88
89	if (((statbuf.st_mode & S_IRGRP) && getegid () == statbuf.st_gid) ||
90	((statbuf.st_mode & S_IRUSR) && geteuid () == statbuf.st_uid) || (statbuf.st_mode & S_IROTH))
91	mode |= 4;
92
93	if ((statbuf.st_mode & S_IWGRP && getegid () == statbuf.st_gid) ||
94	(statbuf.st_mode & S_IWUSR && geteuid () == statbuf.st_uid) || (statbuf.st_mode & S_IWOTH))
95	mode |= 2;
96
97	return (mode);
98	}
99		33
100	/* This rolls up wall, blocks_magic, blocks_view, etc, all into	34	/* This rolls up wall, blocks_magic, blocks_view, etc, all into
101	* one function that just returns a P_.. value (see map.h)	35	* one function that just returns a P_.. value (see map.h)
102	* it will also do map translation for tiled maps, returning	36	* it will also do map translation for tiled maps, returning
103	* 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
…		…
138	* by the caller.	72	* by the caller.
139	*/	73	*/
140	int	74	int
141	blocked_link (object *ob, maptile *m, int sx, int sy)	75	blocked_link (object *ob, maptile *m, int sx, int sy)
142	{	76	{
143	object *tmp;
144	int mflags, blocked;
145
146	/* 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
147	* have already checked this.	78	* have already checked this.
148	*/	79	*/
149	if (OUT_OF_REAL_MAP (m, sx, sy))	80	if (OUT_OF_REAL_MAP (m, sx, sy))
150	{	81	{
151	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");
152	return 1;	83	return 1;
153	}	84	}
154		85
155	/* Save some cycles - instead of calling get_map_flags(), just get the value	86	mapspace &ms = m->at (sx, sy);
156	* directly.
157	*/
158	mflags = m->at (sx, sy).flags ();
159		87
160	blocked = GET_MAP_MOVE_BLOCK (m, sx, sy);	88	int mflags = ms.flags ();
		89	int blocked = ms.move_block;
161		90
162	/* If space is currently not blocked by anything, no need to	91	/* If space is currently not blocked by anything, no need to
163	* go further. Not true for players - all sorts of special	92	* go further. Not true for players - all sorts of special
164	* things we need to do for players.	93	* things we need to do for players.
165	*/	94	*/
166	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && (blocked == 0))	95	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && blocked == 0)
167	return 0;	96	return 0;
168		97
169	/* 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
170	* 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
171	* 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
172	* or another. Likewise, only if something is blocking us do we	101	* or another. Likewise, only if something is blocking us do we
173	* need to investigate if there is a special circumstance that would	102	* need to investigate if there is a special circumstance that would
174	* let the player through (inventory checkers for example)	103	* let the player through (inventory checkers for example)
…		…
181	/* 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
182	* 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
183	* true. If we get through the entire stack, that must mean	112	* true. If we get through the entire stack, that must mean
184	* ob is blocking it, so return 0.	113	* ob is blocking it, so return 0.
185	*/	114	*/
186	for (tmp = GET_MAP_OB (m, sx, sy); tmp; tmp = tmp->above)	115	for (object *tmp = ms.top; tmp; tmp = tmp->below)
187	{	116	{
188		117	if (OB_MOVE_BLOCK (ob, tmp))
189	/* This must be before the checks below. Code for inventory checkers. */
190	if (tmp->type == CHECK_INV && OB_MOVE_BLOCK (ob, tmp))
191	{	118	{
192	/* If last_sp is set, the player/monster needs an object,	119	if (INVOKE_OBJECT (BLOCKED_MOVE, tmp, ob))
193	* so we check for it. If they don't have it, they can't	120	if (RESULT_INT (0))
194	* pass through this space.	121	return 1;
195	*/	122	else
196	if (tmp->last_sp)	123	continue;
		124
		125	if (tmp->type == CHECK_INV)
197	{	126	{
198	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))
199	return 1;	131	return 1;
200	else	132	}
201	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;
202	}	142	}
203	else	143	else
204	{	144	return 1; // unconditional block
205	/* In this case, the player must not have the object -	145
206	* if they do, they can't pass through.
207	*/
208	if (check_inv_recursive (ob, tmp) != NULL) /* player has object */
209	return 1;
210	else
211	continue;
212	}
213	} /* if check_inv */
214	else	146	} else {
215	{	147	// space does not block the ob, directly, but
216	/* Broke apart a big nasty if into several here to make	148	// anything alive that is not a door still
217	* this more readable. first check - if the space blocks	149	// blocks anything
218	* movement, can't move here.
219	* second - if a monster, can't move there, unless it is a
220	* hidden dm
221	*/
222	if (OB_MOVE_BLOCK (ob, tmp))
223	return 1;
224		150
225	if (tmp->flag [FLAG_ALIVE]	151	if (tmp->flag [FLAG_ALIVE]
226	&& tmp->head_ () != ob
227	&& tmp != ob
228	&& tmp->type != DOOR	152	&& tmp->type != DOOR
229	&& !(tmp->flag [FLAG_WIZ] && tmp->contr->hidden))	153	&& tmp->head_ () != ob) //TODO: maybe move these check up?
230	return 1;	154	return 1;
231	}	155	}
232
233	}	156	}
		157
234	return 0;	158	return 0;
235	}	159	}
236		160
237	/*	161	/*
238	* 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
239	* This is meant for multi space objects - for single space objecs,	163	* spot. This is meant for multi space objects - for single space objecs,
240	* just calling get_map_blocked and checking that against movement type	164	* just calling get_map_blocked and checking that against movement type
241	* of object. This function goes through all the parts of the	165	* of object. This function goes through all the parts of the multipart
242	* multipart object and makes sure they can be inserted.	166	* object and makes sure they can be inserted.
243	*	167	*
244	* 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.
245	*	169	*
246	* This function has been used to deprecate arch_out_of_map -	170	* This function has been used to deprecate arch_out_of_map -
247	* this function also does that check, and since in most cases,	171	* this function also does that check, and since in most cases,
…		…
258	*	182	*
259	* Note this used to be arch_blocked, but with new movement	183	* Note this used to be arch_blocked, but with new movement
260	* 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
261	* against the move_block values.	185	* against the move_block values.
262	*/	186	*/
263	int	187	bool
264	ob_blocked (const object *ob, maptile *m, sint16 x, sint16 y)	188	object::blocked (maptile *m, int x, int y) const
265	{	189	{
266	archetype *tmp;	190	for (archetype *tmp = arch; tmp; tmp = (archetype *)tmp->more)
267	int flag;
268	maptile *m1;
269	sint16 sx, sy;
270
271	if (!ob)
272	{
273	flag = get_map_flags (m, &m1, x, y, &sx, &sy);
274	if (flag & P_OUT_OF_MAP)
275	return P_OUT_OF_MAP;
276
277	/* don't have object, so don't know what types would block */
278	return m1->at (sx, sy).move_block;
279	}	191	{
		192	mapxy pos (m, x + tmp->x, y + tmp->y);
280		193
281	for (tmp = ob->arch; tmp; tmp = tmp->more)	194	if (!pos.normalise ())
282	{	195	return 1;
283	flag = get_map_flags (m, &m1, x + tmp->clone.x, y + tmp->clone.y, &sx, &sy);
284		196
285	if (flag & P_OUT_OF_MAP)	197	mapspace &ms = *pos;
286	return P_OUT_OF_MAP;	198
287	if (flag & P_IS_ALIVE)	199	if (ms.flags () & P_IS_ALIVE)
288	return P_IS_ALIVE;	200	return 1;
289		201
290	mapspace &ms = m1->at (sx, sy);	202	/* However, often ob doesn't have any move type
291		203	* (signifying non-moving objects)
292	/* find_first_free_spot() calls this function. However, often
293	* ob doesn't have any move type (when used to place exits)
294	* 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.
295	*/	205	*/
296
297	if (ob->move_type == 0 && ms.move_block != MOVE_ALL)	206	if (!move_type && ms.move_block != MOVE_ALL)
298	continue;	207	continue;
299		208
300	/* 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
301	* head of the object should correspond for the entire object.	210	* head of the object should correspond for the entire object.
302	*/	211	*/
303	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))	212	if (ms.blocks (move_type))
304	return P_NO_PASS;	213	return 1;
305	}	214	}
306		215
307	return 0;	216	return 0;
308	}	217	}
309		218
310	/* When the map is loaded, load_object does not actually insert objects	219	//-GPL
311	* into inventory, but just links them. What this does is go through
312	* and insert them properly.
313	* The object 'container' is the object that contains the inventory.
314	* This is needed so that we can update the containers weight.
315	*/
316	void
317	fix_container (object *container)
318	{
319	object *tmp = container->inv, *next;
320
321	container->inv = 0;
322	while (tmp)
323	{
324	next = tmp->below;
325	if (tmp->inv)
326	fix_container (tmp);
327
328	insert_ob_in_ob (tmp, container);
329	tmp = next;
330	}
331
332	/* sum_weight will go through and calculate what all the containers are
333	* carrying.
334	*/
335	sum_weight (container);
336	}
337		220
338	void	221	void
339	maptile::set_object_flag (int flag, int value)	222	maptile::set_object_flag (int flag, int value)
340	{	223	{
341	if (!spaces)	224	if (!spaces)
…		…
343		226
344	for (mapspace *ms = spaces + size (); ms-- > spaces; )	227	for (mapspace *ms = spaces + size (); ms-- > spaces; )
345	for (object *tmp = ms->bot; tmp; tmp = tmp->above)	228	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
346	tmp->flag [flag] = value;	229	tmp->flag [flag] = value;
347	}	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
348		259
349	/* 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
350	* 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
351	* 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
352	* they are saved).	263	* they are saved).
…		…
356	{	267	{
357	if (!spaces)	268	if (!spaces)
358	return;	269	return;
359		270
360	for (mapspace *ms = spaces + size (); ms-- > spaces; )	271	for (mapspace *ms = spaces + size (); ms-- > spaces; )
361	for (object *op = ms->bot; op; op = op->above)	272	{
		273	object *op = ms->bot;
		274	while (op)
362	{	275	{
363	/* already multipart - don't do anything more */	276	/* already multipart - don't do anything more */
364	if (op->head_ () == op && !op->more && op->arch->more)	277	if (op->head_ () == op && !op->more && op->arch->more)
365	{	278	{
366	op->remove ();	279	op->remove ();
367	op->expand_tail ();	280	op->expand_tail ();
		281
		282	// FIXME: INS_ON_TOP is just a workaround for the pentagram vs.
		283	// multi-tile monster bug, where INS_ABOVE_FLOOR_ONLY put the monsters
		284	// below the pentagrams... hopefully INS_ON_TOP doesn't break anything
368	insert (op, op->x, op->y, 0, 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
369	}	289	}
		290	else
		291	op = op->above;
370	}	292	}
		293	}
371	}	294	}
		295
		296	//-GPL
372		297
373	/*	298	/*
374	* 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
375	* file pointer.	300	* file pointer.
376	*/	301	*/
377	bool	302	bool
378	maptile::_load_objects (object_thawer &f)	303	maptile::_load_objects (object_thawer &f)
379	{	304	{
380	for (;;)	305	for (;;)
381	{	306	{
382	coroapi::cede_to_tick_every (100); // cede once in a while	307	coroapi::cede_to_tick (); // cede once in a while
383		308
384	switch (f.kw)	309	switch (f.kw)
385	{	310	{
386	case KW_arch:	311	case KW_arch:
387	if (object *op = object::read (f, this))	312	if (object *op = object::read (f, this))
388	{	313	{
		314	// TODO: why?
389	if (op->inv)	315	if (op->inv)
		316	{
		317	op->carrying = 0;
390	sum_weight (op);	318	op->update_weight ();
		319	}
391		320
392	insert_ob_in_map (op, this, op, INS_NO_MERGE | INS_NO_WALK_ON | INS_ON_TOP | INS_MAP_LOAD);	321	if (IN_RANGE_EXC (op->x, 0, width) && IN_RANGE_EXC (op->y, 0, height))
		322	{
		323	// we insert manually because
		324	// a) its way faster
		325	// b) we remove manually, too, and there are good reasons for that
		326	// c) it's correct
		327	mapspace &ms = at (op->x, op->y);
		328
		329	op->flag [FLAG_REMOVED] = false;
		330
		331	op->above = 0;
		332	op->below = ms.top;
		333
		334	*(ms.top ? &ms.top->above : &ms.bot) = op;
		335
		336	ms.top = op;
		337	ms.flags_ = 0;
		338	}
		339	else
		340	{
		341	f.parse_warn (format ("object %s out of range", op->debug_desc ()));
		342	op->destroy ();
		343	}
393	}	344	}
394		345
395	continue;	346	continue;
396		347
397	case KW_EOF:	348	case KW_EOF:
…		…
410	}	361	}
411		362
412	void	363	void
413	maptile::activate ()	364	maptile::activate ()
414	{	365	{
415	active = true;
416
417	if (spaces)	366	if (spaces)
418	for (mapspace *ms = spaces + size (); ms-- > spaces; )	367	for (mapspace *ms = spaces + size (); ms-- > spaces; )
419	for (object *op = ms->bot; op; op = op->above)	368	for (object *op = ms->bot; op; op = op->above)
420	op->activate_recursive ();	369	op->activate_recursive ();
421	}	370	}
422		371
423	void	372	void
424	maptile::deactivate ()	373	maptile::deactivate ()
425	{	374	{
426	active = false;
427
428	if (spaces)	375	if (spaces)
429	for (mapspace *ms = spaces + size (); ms-- > spaces; )	376	for (mapspace *ms = spaces + size (); ms-- > spaces; )
430	for (object *op = ms->bot; op; op = op->above)	377	for (object *op = ms->bot; op; op = op->above)
431	op->deactivate_recursive ();	378	op->deactivate_recursive ();
432	}	379	}
…		…
442	if (!spaces)	389	if (!spaces)
443	return false;	390	return false;
444		391
445	for (int i = 0; i < size (); ++i)	392	for (int i = 0; i < size (); ++i)
446	{	393	{
447	int unique = 0;	394	bool unique = 0;
		395
448	for (object *op = spaces [i].bot; op; op = op->above)	396	for (object *op = spaces [i].bot; op; op = op->above)
449	{	397	{
450	if (op->flag [FLAG_UNIQUE] && op->flag [FLAG_IS_FLOOR])	398	unique |= op->flag [FLAG_UNIQUE] && op->flag [FLAG_IS_FLOOR];
451	unique = 1;
452		399
453	if (!op->can_map_save ())	400	if (expect_false (!op->can_map_save ()))
454	continue;	401	continue;
455		402
456	if (unique || op->flag [FLAG_UNIQUE])	403	if (expect_false (unique || op->flag [FLAG_UNIQUE]))
457	{	404	{
458	if (flags & IO_UNIQUES)	405	if (flags & IO_UNIQUES)
459	op->write (f);	406	op->write (f);
460	}	407	}
461	else if (flags & IO_OBJECTS)	408	else if (expect_true (flags & IO_OBJECTS))
462	op->write (f);	409	op->write (f);
463	}	410	}
464	}	411	}
465		412
466	coroapi::cede_to_tick ();	413	coroapi::cede_to_tick ();
467		414
468	return true;	415	return true;
469	}	416	}
470		417
471	bool	418	bool
472	maptile::_load_objects (const char *path, bool skip_header)
473	{
474	object_thawer f (path);
475
476	if (!f)
477	return false;
478
479	f.next ();
480
481	if (skip_header)
482	for (;;)
483	{
484	keyword kw = f.kw;
485	f.skip ();
486	if (kw == KW_end)
487	break;
488	}
489
490	return _load_objects (f);
491	}
492
493	bool
494	maptile::_save_objects (const char *path, int flags)	419	maptile::_save_objects (const char *path, int flags)
495	{	420	{
496	object_freezer freezer;	421	object_freezer freezer;
497		422
498	if (!_save_objects (freezer, flags))	423	if (!_save_objects (freezer, flags))
499	return false;	424	return false;
500		425
501	return freezer.save (path);	426	return freezer.save (path);
502	}	427	}
503		428
504	maptile::maptile ()	429	void
		430	maptile::init ()
505	{	431	{
506	in_memory = MAP_SWAPPED;	432	in_memory = MAP_SWAPPED;
507		433
508	/* The maps used to pick up default x and y values from the	434	/* The maps used to pick up default x and y values from the
509	* map archetype. Mimic that behaviour.	435	* map archetype. Mimic that behaviour.
510	*/	436	*/
511	width = 16;	437	width = 16;
512	height = 16;	438	height = 16;
513	timeout = 300;	439	timeout = 300;
514	max_nrof = 1000; // 1000 items of anything	440	max_items = MAX_ITEM_PER_ACTION;
515	max_volume = 2000000; // 2m³	441	max_volume = 2000000; // 2m³
516	}
517
518	maptile::maptile (int w, int h)
519	{
520	in_memory = MAP_SWAPPED;
521
522	width = w;
523	height = h;
524	reset_timeout = 0;	442	reset_timeout = 0;
525	timeout = 300;
526	enter_x = 0;	443	enter_x = 0;
527	enter_y = 0;	444	enter_y = 0;
		445	}
		446
		447	maptile::maptile ()
		448	{
		449	init ();
		450	}
		451
		452	maptile::maptile (int w, int h)
		453	{
		454	init ();
		455
		456	width = w;
		457	height = h;
528		458
529	alloc ();	459	alloc ();
530	}	460	}
531		461
532	/*	462	/*
…		…
540	if (spaces)	470	if (spaces)
541	return;	471	return;
542		472
543	spaces = salloc0<mapspace> (size ());	473	spaces = salloc0<mapspace> (size ());
544	}	474	}
		475
		476	//+GPL
545		477
546	/* Takes a string from a map definition and outputs a pointer to the array of shopitems	478	/* Takes a string from a map definition and outputs a pointer to the array of shopitems
547	* corresponding to that string. Memory is allocated for this, it must be freed	479	* corresponding to that string. Memory is allocated for this, it must be freed
548	* at a later date.	480	* at a later date.
549	* Called by parse_map_headers below.	481	* Called by parse_map_headers below.
…		…
626	return items;	558	return items;
627	}	559	}
628		560
629	/* opposite of parse string, this puts the string that was originally fed in to	561	/* opposite of parse string, this puts the string that was originally fed in to
630	* the map (or something equivilent) into output_string. */	562	* the map (or something equivilent) into output_string. */
631	static void	563	static const char *
632	print_shop_string (maptile *m, char *output_string)	564	print_shop_string (maptile *m)
633	{	565	{
634	int i;	566	static dynbuf_text buf; buf.clear ();
635	char tmp[MAX_BUF];	567	bool first = true;
636		568
637	strcpy (output_string, "");
638	for (i = 0; i < m->shopitems[0].index; i++)	569	for (int i = 0; i < m->shopitems[0].index; i++)
639	{	570	{
		571	if (!first)
		572	buf << ';';
		573
		574	first = false;
		575
640	if (m->shopitems[i].typenum)	576	if (m->shopitems[i].typenum)
641	{	577	{
642	if (m->shopitems[i].strength)	578	if (m->shopitems[i].strength)
643	sprintf (tmp, "%s:%d;", m->shopitems[i].name, m->shopitems[i].strength);	579	buf.printf ("%s:%d", m->shopitems[i].name, m->shopitems[i].strength);
644	else	580	else
645	sprintf (tmp, "%s;", m->shopitems[i].name);	581	buf.printf ("%s", m->shopitems[i].name);
646	}	582	}
647	else	583	else
648	{	584	{
649	if (m->shopitems[i].strength)	585	if (m->shopitems[i].strength)
650	sprintf (tmp, "*:%d;", m->shopitems[i].strength);	586	buf.printf ("*:%d", m->shopitems[i].strength);
651	else	587	else
652	sprintf (tmp, "*");	588	buf.printf ("*");
653	}	589	}
654
655	strcat (output_string, tmp);
656	}	590	}
		591
		592	return buf;
657	}	593	}
		594
		595	//-GPL
658		596
659	/* This loads the header information of the map. The header	597	/* This loads the header information of the map. The header
660	* contains things like difficulty, size, timeout, etc.	598	* contains things like difficulty, size, timeout, etc.
661	* this used to be stored in the map object, but with the	599	* this used to be stored in the map object, but with the
662	* addition of tiling, fields beyond that easily named in an	600	* addition of tiling, fields beyond that easily named in an
…		…
670	bool	608	bool
671	maptile::_load_header (object_thawer &thawer)	609	maptile::_load_header (object_thawer &thawer)
672	{	610	{
673	for (;;)	611	for (;;)
674	{	612	{
675	keyword kw = thawer.get_kv ();
676
677	switch (kw)	613	switch (thawer.kw)
678	{	614	{
679	case KW_msg:	615	case KW_msg:
680	thawer.get_ml (KW_endmsg, msg);	616	thawer.get_ml (KW_endmsg, msg);
681	break;	617	break;
682		618
683	case KW_lore: // CF+ extension	619	case KW_lore: // deliantra extension
684	thawer.get_ml (KW_endlore, maplore);	620	thawer.get_ml (KW_endlore, maplore);
685	break;	621	break;
686		622
687	case KW_maplore:	623	case KW_maplore:
688	thawer.get_ml (KW_endmaplore, maplore);	624	thawer.get_ml (KW_endmaplore, maplore);
…		…
705	case KW_shopgreed: thawer.get (shopgreed); break;	641	case KW_shopgreed: thawer.get (shopgreed); break;
706	case KW_shopmin: thawer.get (shopmin); break;	642	case KW_shopmin: thawer.get (shopmin); break;
707	case KW_shopmax: thawer.get (shopmax); break;	643	case KW_shopmax: thawer.get (shopmax); break;
708	case KW_shoprace: thawer.get (shoprace); break;	644	case KW_shoprace: thawer.get (shoprace); break;
709	case KW_outdoor: thawer.get (outdoor); break;	645	case KW_outdoor: thawer.get (outdoor); break;
710	case KW_temp: thawer.get (temp); break;
711	case KW_pressure: thawer.get (pressure); break;
712	case KW_humid: thawer.get (humid); break;
713	case KW_windspeed: thawer.get (windspeed); break;
714	case KW_winddir: thawer.get (winddir); break;
715	case KW_sky: thawer.get (sky); break;
716		646
717	case KW_per_player: thawer.get (per_player); break;	647	case KW_per_player: thawer.get (per_player); break;
718	case KW_per_party: thawer.get (per_party); break;	648	case KW_per_party: thawer.get (per_party); break;
		649	case KW_no_reset: thawer.get (no_reset); break;
		650	case KW_no_drop: thawer.get (no_drop); break;
719		651
720	case KW_region: default_region = region::find (thawer.get_str ()); break;	652	case KW_region: thawer.get (default_region); break;
721	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;	653	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;
722		654
723	// old names new names	655	// old names new names
724	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;	656	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;
725	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;	657	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;
…		…
733		665
734	case KW_tile_path_1: thawer.get (tile_path [0]); break;	666	case KW_tile_path_1: thawer.get (tile_path [0]); break;
735	case KW_tile_path_2: thawer.get (tile_path [1]); break;	667	case KW_tile_path_2: thawer.get (tile_path [1]); break;
736	case KW_tile_path_3: thawer.get (tile_path [2]); break;	668	case KW_tile_path_3: thawer.get (tile_path [2]); break;
737	case KW_tile_path_4: thawer.get (tile_path [3]); break;	669	case KW_tile_path_4: thawer.get (tile_path [3]); break;
		670	case KW_tile_path_5: thawer.get (tile_path [4]); break;
		671	case KW_tile_path_6: thawer.get (tile_path [5]); break;
		672
		673	case KW_ERROR:
		674	set_key_text (thawer.kw_str, thawer.value);
		675	break;
738		676
739	case KW_end:	677	case KW_end:
		678	thawer.next ();
740	return true;	679	return true;
741		680
742	default:	681	default:
743	if (!thawer.parse_error ("map", 0))	682	if (!thawer.parse_error ("map"))
744	return false;	683	return false;
745	break;	684	break;
746	}	685	}
		686
		687	thawer.next ();
747	}	688	}
748		689
749	abort ();	690	abort ();
750	}	691	}
751		692
752	bool	693	//+GPL
753	maptile::_load_header (const char *path)
754	{
755	object_thawer thawer (path);
756
757	if (!thawer)
758	return false;
759
760	return _load_header (thawer);
761	}
762		694
763	/******************************************************************************	695	/******************************************************************************
764	* This is the start of unique map handling code	696	* This is the start of unique map handling code
765	*****************************************************************************/	697	*****************************************************************************/
766		698
…		…
773	int unique = 0;	705	int unique = 0;
774	for (object *op = spaces [i].bot; op; )	706	for (object *op = spaces [i].bot; op; )
775	{	707	{
776	object *above = op->above;	708	object *above = op->above;
777		709
778	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))	710	if (op->flag [FLAG_IS_FLOOR] && op->flag [FLAG_UNIQUE])
779	unique = 1;	711	unique = 1;
780		712
781	if (op->head_ () == op && (QUERY_FLAG (op, FLAG_UNIQUE) || unique))	713	if (op->head_ () == op && (op->flag [FLAG_UNIQUE] || unique))
782	{
783	op->destroy_inv (false);
784	op->destroy ();	714	op->destroy ();
785	}
786		715
787	op = above;	716	op = above;
788	}	717	}
789	}	718	}
790	}	719	}
791		720
		721	//-GPL
		722
792	bool	723	bool
793	maptile::_save_header (object_freezer &freezer)	724	maptile::_save_header (object_freezer &freezer)
794	{	725	{
795	#define MAP_OUT(k) freezer.put (KW_ ## k, k)	726	#define MAP_OUT(k) freezer.put (KW(k), k)
796	#define MAP_OUT2(k,v) freezer.put (KW_ ## k, v)	727	#define MAP_OUT2(k,v) freezer.put (KW(k), v)
797		728
798	MAP_OUT2 (arch, "map");	729	MAP_OUT2 (arch, CS(map));
799		730
800	if (name) MAP_OUT (name);	731	if (name) MAP_OUT (name);
801	MAP_OUT (swap_time);	732	MAP_OUT (swap_time);
802	MAP_OUT (reset_time);	733	MAP_OUT (reset_time);
803	MAP_OUT (reset_timeout);	734	MAP_OUT (reset_timeout);
804	MAP_OUT (fixed_resettime);	735	MAP_OUT (fixed_resettime);
		736	MAP_OUT (no_reset);
		737	MAP_OUT (no_drop);
805	MAP_OUT (difficulty);	738	MAP_OUT (difficulty);
806
807	if (default_region) MAP_OUT2 (region, default_region->name);	739	if (default_region) MAP_OUT2 (region, default_region->name);
808		740
809	if (shopitems)	741	if (shopitems) MAP_OUT2 (shopitems, print_shop_string (this));
810	{
811	char shop[MAX_BUF];
812	print_shop_string (this, shop);
813	MAP_OUT2 (shopitems, shop);
814	}
815
816	MAP_OUT (shopgreed);	742	MAP_OUT (shopgreed);
817	MAP_OUT (shopmin);	743	MAP_OUT (shopmin);
818	MAP_OUT (shopmax);	744	MAP_OUT (shopmax);
819	if (shoprace) MAP_OUT (shoprace);	745	if (shoprace) MAP_OUT (shoprace);
820	MAP_OUT (darkness);	746
821	MAP_OUT (width);	747	MAP_OUT (width);
822	MAP_OUT (height);	748	MAP_OUT (height);
823	MAP_OUT (enter_x);	749	MAP_OUT (enter_x);
824	MAP_OUT (enter_y);	750	MAP_OUT (enter_y);
825		751	MAP_OUT (darkness);
826	if (msg) freezer.put (KW_msg , KW_endmsg , msg);
827	if (maplore) freezer.put (KW_maplore, KW_endmaplore, maplore);
828
829	MAP_OUT (outdoor);	752	MAP_OUT (outdoor);
830	MAP_OUT (temp);	753
831	MAP_OUT (pressure);	754	if (msg) freezer.put (KW(msg) , KW(endmsg) , msg);
832	MAP_OUT (humid);	755	if (maplore) freezer.put (KW(maplore), KW(endmaplore), maplore);
833	MAP_OUT (windspeed);
834	MAP_OUT (winddir);
835	MAP_OUT (sky);
836		756
837	MAP_OUT (per_player);	757	MAP_OUT (per_player);
838	MAP_OUT (per_party);	758	MAP_OUT (per_party);
839		759
840	if (tile_path [0]) MAP_OUT2 (tile_path_1, tile_path [0]);	760	if (tile_path [0]) MAP_OUT2 (tile_path_1, tile_path [0]);
841	if (tile_path [1]) MAP_OUT2 (tile_path_2, tile_path [1]);	761	if (tile_path [1]) MAP_OUT2 (tile_path_2, tile_path [1]);
842	if (tile_path [2]) MAP_OUT2 (tile_path_3, tile_path [2]);	762	if (tile_path [2]) MAP_OUT2 (tile_path_3, tile_path [2]);
843	if (tile_path [3]) MAP_OUT2 (tile_path_4, tile_path [3]);	763	if (tile_path [3]) MAP_OUT2 (tile_path_4, tile_path [3]);
		764	if (tile_path [4]) MAP_OUT2 (tile_path_5, tile_path [4]);
		765	if (tile_path [5]) MAP_OUT2 (tile_path_6, tile_path [5]);
844		766
845	freezer.put (this);	767	freezer.put (this);
846	freezer.put (KW_end);	768	freezer.put (KW(end));
847		769
848	return true;	770	return true;
849	}	771	}
850		772
851	bool	773	bool
…		…
857	return false;	779	return false;
858		780
859	return freezer.save (path);	781	return freezer.save (path);
860	}	782	}
861		783
		784	//+GPL
		785
862	/*	786	/*
863	* Remove and free all objects in the given map.	787	* Remove and free all objects in the given map.
864	*/	788	*/
865	void	789	void
866	maptile::clear ()	790	maptile::clear ()
867	{	791	{
868	sfree (regions, size ()), regions = 0;
869	free (regionmap), regionmap = 0;
870
871	if (spaces)	792	if (spaces)
872	{	793	{
873	for (mapspace *ms = spaces + size (); ms-- > spaces; )	794	for (mapspace *ms = spaces + size (); ms-- > spaces; )
874	while (object *op = ms->bot->head_ ())	795	while (object *op = ms->bot)
875	{	796	{
876	op->destroy_inv (false);	797	// manually remove, as to not trigger anything
		798	if (ms->bot = op->above)
		799	ms->bot->below = 0;
		800
		801	op->flag [FLAG_REMOVED] = true;
		802
		803	object *head = op->head_ ();
		804	if (op == head)
877	op->destroy ();	805	op->destroy ();
		806	else if (head->map != op->map)
		807	{
		808	LOG (llevDebug, "bad luck for object crossing map borders: %s", head->debug_desc ());
		809	head->destroy ();
		810	}
878	}	811	}
879		812
880	sfree (spaces, size ()), spaces = 0;	813	sfree0 (spaces, size ());
881	}	814	}
882		815
883	if (buttons)	816	if (buttons)
884	free_objectlinkpt (buttons), buttons = 0;	817	free_objectlinkpt (buttons), buttons = 0;
		818
		819	sfree0 (regions, size ());
		820	delete [] regionmap; regionmap = 0;
885	}	821	}
886		822
887	void	823	void
888	maptile::clear_header ()	824	maptile::clear_header ()
889	{	825	{
…		…
891	msg = 0;	827	msg = 0;
892	maplore = 0;	828	maplore = 0;
893	shoprace = 0;	829	shoprace = 0;
894	delete [] shopitems, shopitems = 0;	830	delete [] shopitems, shopitems = 0;
895		831
896	for (int i = 0; i < 4; i++)	832	for (int i = 0; i < TILE_NUM; i++)
897	tile_path [i] = 0;	833	tile_path [i] = 0;
898	}	834	}
899		835
900	maptile::~maptile ()	836	maptile::~maptile ()
901	{	837	{
…		…
921	attachable::do_destroy ();	857	attachable::do_destroy ();
922		858
923	clear ();	859	clear ();
924	}	860	}
925		861
926	/*	862	/* decay and destroy perishable items in a map */
927	* Updates every button on the map (by calling update_button() for them).	863	// TODO: should be done regularly, not on map load?
928	*/
929	void	864	void
930	maptile::update_buttons ()	865	maptile::do_decay_objects ()
931	{	866	{
932	for (oblinkpt *obp = buttons; obp; obp = obp->next)	867	if (!spaces)
933	for (objectlink *ol = obp->link; ol; ol = ol->next)	868	return;
		869
		870	for (mapspace *ms = spaces + size (); ms-- > spaces; )
		871	for (object *above, *op = ms->bot; op; op = above)
934	{	872	{
935	if (!ol->ob)	873	above = op->above;
		874
		875	// do not decay anything above unique floor tiles (yet :)
		876	if (op->flag [FLAG_IS_FLOOR] && op->flag [FLAG_UNIQUE])
		877	break;
		878
		879	bool destroy = 0;
		880
		881	if (op->flag [FLAG_IS_FLOOR]
		882	|| op->flag [FLAG_OBJ_ORIGINAL]
		883	|| op->flag [FLAG_UNIQUE]
		884	|| op->flag [FLAG_OVERLAY_FLOOR]
		885	|| op->flag [FLAG_UNPAID]
		886	|| op->is_alive ())
		887	; // do not decay
		888	else if (op->is_weapon ())
936	{	889	{
937	LOG (llevError, "Internal error in update_button (%s (%dx%d), connected %ld).\n",	890	op->stats.dam--;
938	ol->ob ? (const char *) ol->ob->name : "null", ol->ob ? ol->ob->x : -1, ol->ob ? ol->ob->y : -1, obp->value);	891	if (op->stats.dam < 0)
939	continue;	892	destroy = 1;
940	}	893	}
941		894	else if (op->is_armor ())
942	if (ol->ob->type == BUTTON || ol->ob->type == PEDESTAL)
943	{	895	{
944	update_button (ol->ob);	896	op->stats.ac--;
945	break;	897	if (op->stats.ac < 0)
		898	destroy = 1;
946	}	899	}
		900	else if (op->type == FOOD)
		901	{
		902	op->stats.food -= rndm (5, 20);
		903	if (op->stats.food < 0)
		904	destroy = 1;
		905	}
		906	else
		907	{
		908	int mat = op->materials;
		909
		910	if (mat & M_PAPER
		911	|| mat & M_LEATHER
		912	|| mat & M_WOOD
		913	|| mat & M_ORGANIC
		914	|| mat & M_CLOTH
		915	|| mat & M_LIQUID
		916	|| (mat & M_IRON && rndm (1, 5) == 1)
		917	|| (mat & M_GLASS && rndm (1, 2) == 1)
		918	|| ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
		919	|| ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
		920	//|| (mat & M_ICE && temp > 32)
		921	)
		922	destroy = 1;
		923	}
		924
		925	/* adjust overall chance below */
		926	if (destroy && rndm (0, 1))
		927	op->destroy ();
947	}	928	}
948	}	929	}
949		930
950	/*	931	/*
951	* This routine is supposed to find out the difficulty of the map.	932	* This routine is supposed to find out the difficulty of the map.
952	* difficulty does not have a lot to do with character level,	933	* difficulty does not have a lot to do with character level,
953	* but does have a lot to do with treasure on the map.	934	* but does have a lot to do with treasure on the map.
954	*	935	*
955	* Difficulty can now be set by the map creature. If the value stored	936	* Difficulty can now be set by the map creator. If the value stored
956	* in the map is zero, then use this routine. Maps should really	937	* in the map is zero, then use this routine. Maps should really
957	* have a difficulty set than using this function - human calculation	938	* have a difficulty set rather than using this function - human calculation
958	* is much better than this functions guesswork.	939	* is much better than this function's guesswork.
959	*/	940	*/
960	int	941	int
961	maptile::estimate_difficulty () const	942	maptile::estimate_difficulty () const
962	{	943	{
963	long monster_cnt = 0;	944	long monster_cnt = 0;
…		…
965	sint64 total_exp = 0;	946	sint64 total_exp = 0;
966		947
967	for (mapspace *ms = spaces + size (); ms-- > spaces; )	948	for (mapspace *ms = spaces + size (); ms-- > spaces; )
968	for (object *op = ms->bot; op; op = op->above)	949	for (object *op = ms->bot; op; op = op->above)
969	{	950	{
970	if (QUERY_FLAG (op, FLAG_MONSTER))	951	if (op->flag [FLAG_MONSTER])
971	{	952	{
972	total_exp += op->stats.exp;	953	total_exp += op->stats.exp;
973	monster_cnt++;	954	monster_cnt++;
974	}	955	}
975		956
976	if (QUERY_FLAG (op, FLAG_GENERATOR))	957	if (op->flag [FLAG_GENERATOR])
977	{	958	{
978	total_exp += op->stats.exp;	959	total_exp += op->stats.exp;
979		960
980	if (archetype *at = type_to_archetype (GENERATE_TYPE (op)))	961	if (archetype *at = op->other_arch)
		962	{
981	total_exp += at->clone.stats.exp * 8;	963	total_exp += at->stats.exp * 8;
982
983	monster_cnt++;	964	monster_cnt++;
		965	}
		966
		967	for (object *inv = op->inv; inv; inv = inv->below)
		968	{
		969	total_exp += op->stats.exp * 8;
		970	monster_cnt++;
		971	}
984	}	972	}
985	}	973	}
986		974
987	avgexp = (double) total_exp / monster_cnt;	975	avgexp = (double) total_exp / monster_cnt;
988		976
…		…
1001	* postive values make it darker, negative make it brighter	989	* postive values make it darker, negative make it brighter
1002	*/	990	*/
1003	int	991	int
1004	maptile::change_map_light (int change)	992	maptile::change_map_light (int change)
1005	{	993	{
1006	int new_level = darkness + change;
1007
1008	/* Nothing to do */	994	/* Nothing to do */
1009	if (!change || (new_level <= 0 && darkness == 0) || (new_level >= MAX_DARKNESS && darkness >= MAX_DARKNESS))	995	if (!change)
1010	return 0;	996	return 0;
1011		997
1012	/* inform all players on the map */	998	/* inform all players on the map */
1013	if (change > 0)	999	if (change > 0)
1014	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");	1000	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");
1015	else	1001	else
1016	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");	1002	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");
1017		1003
1018	/* Do extra checking. since darkness is a unsigned value,	1004	darkness = clamp (darkness + change, -MAX_DARKNESS, MAX_DARKNESS);
1019	* we need to be extra careful about negative values.
1020	* In general, the checks below are only needed if change
1021	* is not +/-1
1022	*/
1023	if (new_level < 0)
1024	darkness = 0;
1025	else if (new_level >= MAX_DARKNESS)
1026	darkness = MAX_DARKNESS;
1027	else
1028	darkness = new_level;
1029		1005
1030	/* All clients need to get re-updated for the change */	1006	/* All clients need to get re-updated for the change */
1031	update_all_map_los (this);	1007	update_all_map_los (this);
		1008
1032	return 1;	1009	return 1;
1033	}	1010	}
1034		1011
1035	/*	1012	/*
1036	* This function updates various attributes about a specific space	1013	* This function updates various attributes about a specific space
…		…
1039	* through, etc)	1016	* through, etc)
1040	*/	1017	*/
1041	void	1018	void
1042	mapspace::update_ ()	1019	mapspace::update_ ()
1043	{	1020	{
1044	object *tmp, *last = 0;	1021	object *last = 0;
1045	uint8 flags = P_UPTODATE, light = 0, anywhere = 0;	1022	uint8 flags = P_UPTODATE;
		1023	sint8 light = 0;
1046	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;	1024	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;
		1025	uint64_t volume = 0;
		1026	uint32_t items = 0;
		1027	object *anywhere = 0;
		1028	uint8_t middle_visibility = 0;
1047		1029
1048	//object *middle = 0;	1030	//object *middle = 0;
1049	//object *top = 0;	1031	//object *top = 0;
1050	//object *floor = 0;	1032	//object *floor = 0;
1051	// this seems to generate better code than using locals, above	1033	// this seems to generate better code than using locals, above
1052	object *&top = faces_obj[0] = 0;	1034	object *&top = faces_obj[0] = 0;
1053	object *&middle = faces_obj[1] = 0;	1035	object *&middle = faces_obj[1] = 0;
1054	object *&floor = faces_obj[2] = 0;	1036	object *&floor = faces_obj[2] = 0;
1055		1037
		1038	object::flags_t allflags; // all flags of all objects or'ed together
		1039
1056	for (tmp = bot; tmp; last = tmp, tmp = tmp->above)	1040	for (object *tmp = bot; tmp; last = tmp, tmp = tmp->above)
1057	{	1041	{
1058	/* This could be made additive I guess (two lights better than	1042	// Lights are additive, up to MAX_LIGHT_RADIUS, see los.C)
1059	* one). But if so, it shouldn't be a simple additive - 2
1060	* light bulbs do not illuminate twice as far as once since
1061	* it is a dissapation factor that is cubed.
1062	*/
1063	if (tmp->glow_radius > light)
1064	light = tmp->glow_radius;	1043	light += tmp->glow_radius;
1065		1044
1066	/* This call is needed in order to update objects the player	1045	/* This call is needed in order to update objects the player
1067	* is standing in that have animations (ie, grass, fire, etc).	1046	* is standing in that have animations (ie, grass, fire, etc).
1068	* However, it also causes the look window to be re-drawn	1047	* However, it also causes the look window to be re-drawn
1069	* 3 times each time the player moves, because many of the	1048	* 3 times each time the player moves, because many of the
1070	* functions the move_player calls eventualy call this.	1049	* functions the move_player calls eventualy call this.
1071	*	1050	*
1072	* Always put the player down for drawing.	1051	* Always put the player down for drawing.
1073	*/	1052	*/
1074	if (!tmp->invisible)	1053	if (expect_true (!tmp->invisible))
1075	{	1054	{
1076	if ((tmp->type == PLAYER || QUERY_FLAG (tmp, FLAG_MONSTER)))	1055	if (expect_false (tmp->type == PLAYER || tmp->flag [FLAG_MONSTER]))
1077	top = tmp;	1056	top = tmp;
1078	else if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1057	else if (expect_false (tmp->flag [FLAG_IS_FLOOR]))
1079	{	1058	{
1080	/* If we got a floor, that means middle and top were below it,	1059	/* If we got a floor, that means middle and top were below it,
1081	* so should not be visible, so we clear them.	1060	* so should not be visible, so we clear them.
1082	*/	1061	*/
1083	middle = 0;	1062	middle = 0;
1084	top = 0;	1063	top = 0;
1085	floor = tmp;	1064	floor = tmp;
		1065	volume = 0;
		1066	items = 0;
1086	}	1067	}
1087	/* Flag anywhere have high priority */	1068	else
1088	else if (QUERY_FLAG (tmp, FLAG_SEE_ANYWHERE))
1089	{	1069	{
		1070	if (expect_true (!tmp->flag [FLAG_NO_PICK]))
		1071	{
		1072	++items;
		1073	volume += tmp->volume ();
		1074	}
		1075
		1076	/* Flag anywhere have high priority */
		1077	if (expect_false (tmp->flag [FLAG_SEE_ANYWHERE]))
		1078	anywhere = tmp;
		1079
		1080	/* Find the highest visible face around. If equal
		1081	* visibilities, we still want the one nearer to the
		1082	* top
		1083	*/
		1084	if (expect_false (::faces [tmp->face].visibility >= middle_visibility))
		1085	{
		1086	middle_visibility = ::faces [tmp->face].visibility;
1090	middle = tmp;	1087	middle = tmp;
1091	anywhere = 1;	1088	}
1092	}	1089	}
1093	/* Find the highest visible face around. If equal
1094	* visibilities, we still want the one nearer to the
1095	* top
1096	*/
1097	else if (!middle || (::faces [tmp->face].visibility > ::faces [middle->face].visibility && !anywhere))
1098	middle = tmp;
1099	}
1100
1101	if (tmp == tmp->above)
1102	{
1103	LOG (llevError, "Error in structure of map\n");
1104	exit (-1);
1105	}	1090	}
1106		1091
1107	move_slow |= tmp->move_slow;	1092	move_slow |= tmp->move_slow;
1108	move_block |= tmp->move_block;	1093	move_block |= tmp->move_block;
1109	move_on |= tmp->move_on;	1094	move_on |= tmp->move_on;
1110	move_off |= tmp->move_off;	1095	move_off |= tmp->move_off;
1111	move_allow |= tmp->move_allow;	1096	move_allow |= tmp->move_allow;
1112		1097
1113	if (QUERY_FLAG (tmp, FLAG_BLOCKSVIEW)) flags |= P_BLOCKSVIEW;	1098	allflags |= tmp->flag;
1114	if (QUERY_FLAG (tmp, FLAG_NO_MAGIC)) flags |= P_NO_MAGIC;	1099
1115	if (tmp->type == PLAYER) flags |= P_PLAYER;	1100	if (tmp->type == PLAYER) flags |= P_PLAYER;
1116	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;	1101	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;
1117	if (QUERY_FLAG (tmp, FLAG_ALIVE)) flags |= P_IS_ALIVE;
1118	if (QUERY_FLAG (tmp, FLAG_DAMNED)) flags |= P_NO_CLERIC;
1119	}	1102	}
1120		1103
1121	this->light = light;	1104	// FLAG_SEE_ANYWHERE takes precedence
		1105	if (anywhere)
		1106	middle = anywhere;
		1107
		1108	// ORing all flags together and checking them here is much faster
		1109	if (allflags [FLAG_BLOCKSVIEW]) flags |= P_BLOCKSVIEW;
		1110	if (allflags [FLAG_NO_MAGIC] ) flags |= P_NO_MAGIC;
		1111	if (allflags [FLAG_ALIVE] ) flags |= P_IS_ALIVE;
		1112	if (allflags [FLAG_DAMNED] ) flags |= P_NO_CLERIC;
		1113
		1114	this->light = min (light, MAX_LIGHT_RADIUS);
1122	this->flags_ = flags;	1115	this->flags_ = flags;
1123	this->move_block = move_block & ~move_allow;	1116	this->move_block = move_block & ~move_allow;
1124	this->move_on = move_on;	1117	this->move_on = move_on;
1125	this->move_off = move_off;	1118	this->move_off = move_off;
1126	this->move_slow = move_slow;	1119	this->move_slow = move_slow;
		1120	this->volume_ = (volume + 1023) / 1024;
		1121	this->items_ = upos_min (items, 65535); // assume nrof <= 2**31
1127		1122
1128	/* At this point, we have a floor face (if there is a floor),	1123	/* At this point, we have a floor face (if there is a floor),
1129	* and the floor is set - we are not going to touch it at	1124	* and the floor is set - we are not going to touch it at
1130	* this point.	1125	* this point.
1131	* middle contains the highest visibility face.	1126	* middle contains the highest visibility face.
…		…
1146	* 1) top face is set, need middle to be set.	1141	* 1) top face is set, need middle to be set.
1147	* 2) middle is set, need to set top.	1142	* 2) middle is set, need to set top.
1148	* 3) neither middle or top is set - need to set both.	1143	* 3) neither middle or top is set - need to set both.
1149	*/	1144	*/
1150		1145
1151	for (tmp = last; tmp; tmp = tmp->below)	1146	for (object *tmp = last; tmp; tmp = tmp->below)
1152	{	1147	{
1153	/* Once we get to a floor, stop, since we already have a floor object */	1148	/* Once we get to a floor, stop, since we already have a floor object */
1154	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1149	if (tmp->flag [FLAG_IS_FLOOR])
1155	break;	1150	break;
1156		1151
1157	/* If two top faces are already set, quit processing */	1152	/* If two top faces are already set, quit processing */
1158	if (top && middle)	1153	if (top && middle)
1159	break;	1154	break;
…		…
1197	faces_obj [1] = middle;	1192	faces_obj [1] = middle;
1198	faces_obj [2] = floor;	1193	faces_obj [2] = floor;
1199	#endif	1194	#endif
1200	}	1195	}
1201		1196
1202	uint64	1197	maptile *
1203	mapspace::volume () const	1198	maptile::tile_available (int dir, bool load)
1204	{	1199	{
1205	uint64 vol = 0;	1200	if (tile_path[dir])
1206
1207	for (object *op = top; op && !op->flag [FLAG_NO_PICK]; op = op->below)
1208	vol += op->volume ();
1209
1210	return vol;
1211	}
1212
1213	/* this updates the orig_map->tile_map[tile_num] value after finding
1214	* the map. It also takes care of linking back the freshly found
1215	* maps tile_map values if it tiles back to this one. It returns
1216	* the value of orig_map->tile_map[tile_num].
1217	*/
1218	static inline maptile *
1219	find_and_link (maptile *orig_map, int tile_num)
1220	{
1221	maptile *mp = orig_map->tile_map [tile_num];
1222
1223	if (!mp)
1224	{
1225	mp = orig_map->find_sync (orig_map->tile_path [tile_num], orig_map);
1226
1227	if (!mp)
1228	{
1229	// emergency mode, manufacture a dummy map, this creates a memleak, but thats fine
1230	LOG (llevError, "FATAL: cannot load tiled map %s from %s, leaking memory and worse!\n",
1231	&orig_map->tile_path[tile_num], &orig_map->path);
1232	mp = new maptile (1, 1);
1233	mp->alloc ();
1234	mp->in_memory = MAP_IN_MEMORY;
1235	}
1236	}	1201	{
		1202	// map is there and we don't need to load it OR it's loaded => return what we have
		1203	if (tile_map[dir] && (!load || tile_map[dir]->in_memory == MAP_ACTIVE))
		1204	return tile_map[dir];
1237		1205
1238	int dest_tile = (tile_num + 2) % 4;	1206	// well, try to locate it then, if possible - maybe it's there already
		1207	if ((tile_map[dir] = find_async (tile_path[dir], this, load)))
		1208	return tile_map[dir];
		1209	}
1239		1210
1240	orig_map->tile_map [tile_num] = mp;
1241
1242	// optimisation: back-link map to origin map if euclidean
1243	//TODO: non-euclidean maps MUST GO
1244	if (orig_map->tile_map[tile_num]->tile_path[dest_tile] == orig_map->path)
1245	orig_map->tile_map[tile_num]->tile_map[dest_tile] = orig_map;
1246
1247	return mp;	1211	return 0;
1248	}
1249
1250	static inline void
1251	load_and_link (maptile *orig_map, int tile_num)
1252	{
1253	find_and_link (orig_map, tile_num)->load_sync ();
1254	}	1212	}
1255		1213
1256	/* this returns TRUE if the coordinates (x,y) are out of	1214	/* this returns TRUE if the coordinates (x,y) are out of
1257	* map m. This function also takes into account any	1215	* map m. This function also takes into account any
1258	* tiling considerations, loading adjacant maps as needed.	1216	* tiling considerations, loading adjacant maps as needed.
…		…
1271	if (!m)	1229	if (!m)
1272	return 0;	1230	return 0;
1273		1231
1274	if (x < 0)	1232	if (x < 0)
1275	{	1233	{
1276	if (!m->tile_path[3])	1234	if (!m->tile_available (3))
1277	return 1;	1235	return 1;
1278		1236
1279	if (!m->tile_map[3] || m->tile_map[3]->in_memory != MAP_IN_MEMORY)
1280	find_and_link (m, 3);
1281
1282	return out_of_map (m->tile_map[3], x + m->tile_map[3]->width, y);	1237	return out_of_map (m->tile_map[3], x + m->tile_map[3]->width, y);
1283	}	1238	}
1284		1239
1285	if (x >= m->width)	1240	if (x >= m->width)
1286	{	1241	{
1287	if (!m->tile_path[1])	1242	if (!m->tile_available (1))
1288	return 1;	1243	return 1;
1289		1244
1290	if (!m->tile_map[1] || m->tile_map[1]->in_memory != MAP_IN_MEMORY)
1291	find_and_link (m, 1);
1292
1293	return out_of_map (m->tile_map[1], x - m->width, y);	1245	return out_of_map (m->tile_map[1], x - m->width, y);
1294	}	1246	}
1295		1247
1296	if (y < 0)	1248	if (y < 0)
1297	{	1249	{
1298	if (!m->tile_path[0])	1250	if (!m->tile_available (0))
1299	return 1;	1251	return 1;
1300		1252
1301	if (!m->tile_map[0] || m->tile_map[0]->in_memory != MAP_IN_MEMORY)
1302	find_and_link (m, 0);
1303
1304	return out_of_map (m->tile_map[0], x, y + m->tile_map[0]->height);	1253	return out_of_map (m->tile_map[0], x, y + m->tile_map[0]->height);
1305	}	1254	}
1306		1255
1307	if (y >= m->height)	1256	if (y >= m->height)
1308	{	1257	{
1309	if (!m->tile_path[2])	1258	if (!m->tile_available (2))
1310	return 1;	1259	return 1;
1311
1312	if (!m->tile_map[2] || m->tile_map[2]->in_memory != MAP_IN_MEMORY)
1313	find_and_link (m, 2);
1314		1260
1315	return out_of_map (m->tile_map[2], x, y - m->height);	1261	return out_of_map (m->tile_map[2], x, y - m->height);
1316	}	1262	}
1317		1263
1318	/* Simple case - coordinates are within this local	1264	/* Simple case - coordinates are within this local
…		…
1332	maptile *	1278	maptile *
1333	maptile::xy_find (sint16 &x, sint16 &y)	1279	maptile::xy_find (sint16 &x, sint16 &y)
1334	{	1280	{
1335	if (x < 0)	1281	if (x < 0)
1336	{	1282	{
1337	if (!tile_path[3])	1283	if (!tile_available (3))
1338	return 0;	1284	return 0;
1339		1285
1340	find_and_link (this, 3);
1341	x += tile_map[3]->width;	1286	x += tile_map[3]->width;
1342	return tile_map[3]->xy_find (x, y);	1287	return tile_map[3]->xy_find (x, y);
1343	}	1288	}
1344		1289
1345	if (x >= width)	1290	if (x >= width)
1346	{	1291	{
1347	if (!tile_path[1])	1292	if (!tile_available (1))
1348	return 0;	1293	return 0;
1349		1294
1350	find_and_link (this, 1);
1351	x -= width;	1295	x -= width;
1352	return tile_map[1]->xy_find (x, y);	1296	return tile_map[1]->xy_find (x, y);
1353	}	1297	}
1354		1298
1355	if (y < 0)	1299	if (y < 0)
1356	{	1300	{
1357	if (!tile_path[0])	1301	if (!tile_available (0))
1358	return 0;	1302	return 0;
1359		1303
1360	find_and_link (this, 0);
1361	y += tile_map[0]->height;	1304	y += tile_map[0]->height;
1362	return tile_map[0]->xy_find (x, y);	1305	return tile_map[0]->xy_find (x, y);
1363	}	1306	}
1364		1307
1365	if (y >= height)	1308	if (y >= height)
1366	{	1309	{
1367	if (!tile_path[2])	1310	if (!tile_available (2))
1368	return 0;	1311	return 0;
1369		1312
1370	find_and_link (this, 2);
1371	y -= height;	1313	y -= height;
1372	return tile_map[2]->xy_find (x, y);	1314	return tile_map[2]->xy_find (x, y);
1373	}	1315	}
1374		1316
1375	/* Simple case - coordinates are within this local	1317	/* Simple case - coordinates are within this local
…		…
1381	/**	1323	/**
1382	* Return whether map2 is adjacent to map1. If so, store the distance from	1324	* Return whether map2 is adjacent to map1. If so, store the distance from
1383	* map1 to map2 in dx/dy.	1325	* map1 to map2 in dx/dy.
1384	*/	1326	*/
1385	int	1327	int
1386	adjacent_map (const maptile *map1, const maptile *map2, int *dx, int *dy)	1328	adjacent_map (maptile *map1, maptile *map2, int *dx, int *dy)
1387	{	1329	{
1388	if (!map1 || !map2)	1330	if (!map1 || !map2)
1389	return 0;	1331	return 0;
1390		1332
1391	//TODO: this doesn't actually check corretcly when intermediate maps are not loaded	1333	//TODO: this doesn't actually check correctly when intermediate maps are not loaded
1392	//fix: compare paths instead (this is likely faster, too!)	1334	//fix: compare paths instead (this is likely faster, too!)
1393	if (map1 == map2)	1335	if (map1 == map2)
1394	{	1336	{
1395	*dx = 0;	1337	*dx = 0;
1396	*dy = 0;	1338	*dy = 0;
1397	}	1339	}
1398	else if (map1->tile_map[0] == map2)	1340	else if (map1->tile_available (TILE_NORTH, false) == map2)
1399	{ /* up */	1341	{
1400	*dx = 0;	1342	*dx = 0;
1401	*dy = -map2->height;	1343	*dy = -map2->height;
1402	}	1344	}
1403	else if (map1->tile_map[1] == map2)	1345	else if (map1->tile_available (TILE_EAST , false) == map2)
1404	{ /* right */	1346	{
1405	*dx = map1->width;	1347	*dx = map1->width;
1406	*dy = 0;	1348	*dy = 0;
1407	}	1349	}
1408	else if (map1->tile_map[2] == map2)	1350	else if (map1->tile_available (TILE_SOUTH, false) == map2)
1409	{ /* down */	1351	{
1410	*dx = 0;	1352	*dx = 0;
1411	*dy = map1->height;	1353	*dy = map1->height;
1412	}	1354	}
1413	else if (map1->tile_map[3] == map2)	1355	else if (map1->tile_available (TILE_WEST , false) == map2)
1414	{ /* left */	1356	{
1415	*dx = -map2->width;	1357	*dx = -map2->width;
1416	*dy = 0;	1358	*dy = 0;
1417	}	1359	}
1418	else if (map1->tile_map[0] && map1->tile_map[0]->tile_map[1] == map2)	1360	else if (map1->tile_map[TILE_NORTH] && map1->tile_map[TILE_NORTH]->tile_available (TILE_EAST , false) == map2)
1419	{ /* up right */	1361	{ /* up right */
1420	*dx = map1->tile_map[0]->width;	1362	*dx = +map1->tile_map[TILE_NORTH]->width;
1421	*dy = -map1->tile_map[0]->height;	1363	*dy = -map1->tile_map[TILE_NORTH]->height;
1422	}	1364	}
1423	else if (map1->tile_map[0] && map1->tile_map[0]->tile_map[3] == map2)	1365	else if (map1->tile_map[TILE_NORTH] && map1->tile_map[TILE_NORTH]->tile_available (TILE_WEST , false) == map2)
1424	{ /* up left */	1366	{ /* up left */
1425	*dx = -map2->width;	1367	*dx = -map2->width;
1426	*dy = -map1->tile_map[0]->height;	1368	*dy = -map1->tile_map[TILE_NORTH]->height;
1427	}	1369	}
1428	else if (map1->tile_map[1] && map1->tile_map[1]->tile_map[0] == map2)	1370	else if (map1->tile_map[TILE_EAST ] && map1->tile_map[TILE_EAST ]->tile_available (TILE_NORTH, false) == map2)
1429	{ /* right up */	1371	{ /* right up */
1430	*dx = map1->width;	1372	*dx = +map1->width;
1431	*dy = -map2->height;	1373	*dy = -map2->height;
1432	}	1374	}
1433	else if (map1->tile_map[1] && map1->tile_map[1]->tile_map[2] == map2)	1375	else if (map1->tile_map[TILE_EAST ] && map1->tile_map[TILE_EAST ]->tile_available (TILE_SOUTH, false) == map2)
1434	{ /* right down */	1376	{ /* right down */
1435	*dx = map1->width;	1377	*dx = +map1->width;
1436	*dy = map1->tile_map[1]->height;	1378	*dy = +map1->tile_map[TILE_EAST]->height;
1437	}	1379	}
1438	else if (map1->tile_map[2] && map1->tile_map[2]->tile_map[1] == map2)	1380	else if (map1->tile_map[TILE_SOUTH] && map1->tile_map[TILE_SOUTH]->tile_available (TILE_EAST , false) == map2)
1439	{ /* down right */	1381	{ /* down right */
1440	*dx = map1->tile_map[2]->width;	1382	*dx = +map1->tile_map[TILE_SOUTH]->width;
1441	*dy = map1->height;	1383	*dy = +map1->height;
1442	}	1384	}
1443	else if (map1->tile_map[2] && map1->tile_map[2]->tile_map[3] == map2)	1385	else if (map1->tile_map[TILE_SOUTH] && map1->tile_map[TILE_SOUTH]->tile_available (TILE_WEST , false) == map2)
1444	{ /* down left */	1386	{ /* down left */
1445	*dx = -map2->width;	1387	*dx = -map2->width;
1446	*dy = map1->height;	1388	*dy = +map1->height;
1447	}	1389	}
1448	else if (map1->tile_map[3] && map1->tile_map[3]->tile_map[0] == map2)	1390	else if (map1->tile_map[TILE_WEST ] && map1->tile_map[TILE_WEST ]->tile_available (TILE_NORTH, false) == map2)
1449	{ /* left up */	1391	{ /* left up */
1450	*dx = -map1->tile_map[3]->width;	1392	*dx = -map1->tile_map[TILE_WEST]->width;
1451	*dy = -map2->height;	1393	*dy = -map2->height;
1452	}	1394	}
1453	else if (map1->tile_map[3] && map1->tile_map[3]->tile_map[2] == map2)	1395	else if (map1->tile_map[TILE_WEST ] && map1->tile_map[TILE_WEST ]->tile_available (TILE_SOUTH, false) == map2)
1454	{ /* left down */	1396	{ /* left down */
1455	*dx = -map1->tile_map[3]->width;	1397	*dx = -map1->tile_map[TILE_WEST]->width;
1456	*dy = map1->tile_map[3]->height;	1398	*dy = +map1->tile_map[TILE_WEST]->height;
1457	}	1399	}
1458	else	1400	else
1459	return 0;	1401	return 0;
1460		1402
1461	return 1;	1403	return 1;
…		…
1497	*	1439	*
1498	* currently, the only flag supported (0x1) is don't translate for	1440	* currently, the only flag supported (0x1) is don't translate for
1499	* closest body part of 'op1'	1441	* closest body part of 'op1'
1500	*/	1442	*/
1501	void	1443	void
1502	get_rangevector (object *op1, object *op2, rv_vector * retval, int flags)	1444	get_rangevector (object *op1, object *op2, rv_vector *retval, int flags)
1503	{	1445	{
1504	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))	1446	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))
1505	{	1447	{
1506	/* be conservative and fill in _some_ data */	1448	/* be conservative and fill in _some_ data */
1507	retval->distance = 10000;	1449	retval->distance = 10000;
1508	retval->distance_x = 10000;	1450	retval->distance_x = 10000;
1509	retval->distance_y = 10000;	1451	retval->distance_y = 10000;
1510	retval->direction = 0;	1452	retval->direction = 0;
1511	retval->part = 0;	1453	retval->part = 0;
1512	}	1454	}
1513	else	1455	else
1514	{	1456	{
1515	object *best;
1516
1517	retval->distance_x += op2->x - op1->x;	1457	retval->distance_x += op2->x - op1->x;
1518	retval->distance_y += op2->y - op1->y;	1458	retval->distance_y += op2->y - op1->y;
1519		1459
1520	best = op1;	1460	object *best = op1;
		1461
1521	/* If this is multipart, find the closest part now */	1462	/* If this is multipart, find the closest part now */
1522	if (!(flags & 0x1) && op1->more)	1463	if (!(flags & 1) && op1->more)
1523	{	1464	{
1524	int best_distance = retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y, tmpi;	1465	int best_distance = idistance (retval->distance_x, retval->distance_y);
1525		1466
1526	/* we just take the offset of the piece to head to figure	1467	/* we just take the offset of the piece to head to figure
1527	* distance instead of doing all that work above again	1468	* distance instead of doing all that work above again
1528	* since the distance fields we set above are positive in the	1469	* since the distance fields we set above are positive in the
1529	* same axis as is used for multipart objects, the simply arithmetic	1470	* same axis as is used for multipart objects, the simply arithmetic
1530	* below works.	1471	* below works.
1531	*/	1472	*/
1532	for (object *tmp = op1->more; tmp; tmp = tmp->more)	1473	for (object *tmp = op1->more; tmp; tmp = tmp->more)
1533	{	1474	{
1534	tmpi = (op1->x - tmp->x + retval->distance_x) * (op1->x - tmp->x + retval->distance_x) +	1475	int tmpi = idistance (op1->x - tmp->x + retval->distance_x, op1->y - tmp->y + retval->distance_y);
1535	(op1->y - tmp->y + retval->distance_y) * (op1->y - tmp->y + retval->distance_y);	1476
1536	if (tmpi < best_distance)	1477	if (tmpi < best_distance)
1537	{	1478	{
1538	best_distance = tmpi;	1479	best_distance = tmpi;
1539	best = tmp;	1480	best = tmp;
1540	}	1481	}
1541	}	1482	}
1542		1483
1543	if (best != op1)	1484	if (best != op1)
1544	{	1485	{
1545	retval->distance_x += op1->x - best->x;	1486	retval->distance_x += op1->x - best->x;
1546	retval->distance_y += op1->y - best->y;	1487	retval->distance_y += op1->y - best->y;
1547	}	1488	}
1548	}	1489	}
1549		1490
1550	retval->part = best;	1491	retval->part = best;
1551	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));	1492	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1552	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1493	retval->direction = find_dir_2 (retval->distance_x, retval->distance_y);
1553	}	1494	}
1554	}	1495	}
1555		1496
1556	/* this is basically the same as get_rangevector above, but instead of	1497	/* this is basically the same as get_rangevector above, but instead of
1557	* the first parameter being an object, it instead is the map	1498	* the first parameter being an object, it instead is the map
…		…
1562	* be more consistant with the above function and also in case they are needed	1503	* be more consistant with the above function and also in case they are needed
1563	* for something in the future. Also, since no object is pasted, the best	1504	* for something in the future. Also, since no object is pasted, the best
1564	* field of the rv_vector is set to NULL.	1505	* field of the rv_vector is set to NULL.
1565	*/	1506	*/
1566	void	1507	void
1567	get_rangevector_from_mapcoord (const maptile *m, int x, int y, const object *op2, rv_vector *retval, int flags)	1508	get_rangevector_from_mapcoord (maptile *m, int x, int y, const object *op2, rv_vector *retval, int flags)
1568	{	1509	{
1569	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))	1510	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))
1570	{	1511	{
1571	/* be conservative and fill in _some_ data */	1512	/* be conservative and fill in _some_ data */
1572	retval->distance = 100000;	1513	retval->distance = 100000;
1573	retval->distance_x = 32767;	1514	retval->distance_x = 32767;
1574	retval->distance_y = 32767;	1515	retval->distance_y = 32767;
1575	retval->direction = 0;	1516	retval->direction = 0;
1576	retval->part = 0;	1517	retval->part = 0;
1577	}	1518	}
1578	else	1519	else
1579	{	1520	{
1580	retval->distance_x += op2->x - x;	1521	retval->distance_x += op2->x - x;
1581	retval->distance_y += op2->y - y;	1522	retval->distance_y += op2->y - y;
1582		1523
1583	retval->part = NULL;	1524	retval->part = 0;
1584	retval->distance = idistance (retval->distance_x, retval->distance_y);	1525	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1585	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1526	retval->direction = find_dir_2 (retval->distance_x, retval->distance_y);
1586	}	1527	}
1587	}	1528	}
1588		1529
1589	/* Returns true of op1 and op2 are effectively on the same map	1530	/* Returns true of op1 and op2 are effectively on the same map
1590	* (as related to map tiling). Note that this looks for a path from	1531	* (as related to map tiling). Note that this looks for a path from
…		…
1600	int dx, dy;	1541	int dx, dy;
1601		1542
1602	return adjacent_map (op1->map, op2->map, &dx, &dy);	1543	return adjacent_map (op1->map, op2->map, &dx, &dy);
1603	}	1544	}
1604		1545
		1546	//-GPL
		1547
1605	object *	1548	object *
1606	maptile::insert (object *op, int x, int y, object *originator, int flags)	1549	maptile::insert (object *op, int x, int y, object *originator, int flags)
1607	{	1550	{
1608	if (!op->flag [FLAG_REMOVED])
1609	op->remove ();
1610
1611	return insert_ob_in_map_at (op, this, originator, flags, x, y);	1551	return insert_ob_in_map_at (op, this, originator, flags, x, y);
1612	}	1552	}
1613		1553
1614	region *	1554	region *
1615	maptile::region (int x, int y) const	1555	maptile::region (int x, int y) const
…		…
1624	return default_region;	1564	return default_region;
1625		1565
1626	return ::region::default_region ();	1566	return ::region::default_region ();
1627	}	1567	}
1628		1568
		1569	//+GPL
		1570
1629	/* picks a random object from a style map.	1571	/* picks a random object from a style map.
1630	* Redone by MSW so it should be faster and not use static
1631	* variables to generate tables.
1632	*/	1572	*/
1633	object *	1573	object *
1634	maptile::pick_random_object () const	1574	maptile::pick_random_object (rand_gen &gen) const
1635	{	1575	{
1636	/* while returning a null object will result in a crash, that	1576	/* while returning a null object will result in a crash, that
1637	* is actually preferable to an infinite loop. That is because	1577	* is actually preferable to an infinite loop. That is because
1638	* most servers will automatically restart in case of crash.	1578	* most servers will automatically restart in case of crash.
1639	* Change the logic on getting the random space - shouldn't make	1579	* Change the logic on getting the random space - shouldn't make
1640	* any difference, but this seems clearer to me.	1580	* any difference, but this seems clearer to me.
1641	*/	1581	*/
1642	for (int i = 1000; --i;)	1582	for (int i = 1000; --i;)
1643	{	1583	{
1644	object *pick = at (rndm (width), rndm (height)).bot;	1584	object *pick = at (gen (width), gen (height)).bot;
1645		1585
1646	// do not prefer big monsters just because they are big.	1586	// must be head: do not prefer big monsters just because they are big.
1647	if (pick && pick->head_ () == pick)	1587	if (pick && pick->is_head ())
1648	return pick->head_ ();	1588	return pick;
1649	}	1589	}
1650		1590
1651	// instead of crashing in the unlikely(?) case, try to return *something*	1591	// instead of crashing in the unlikely(?) case, try to return *something*
1652	return get_archetype ("blocked");	1592	return archetype::find (shstr_bug);
1653	}	1593	}
1654		1594
		1595	//-GPL
		1596
		1597	void
		1598	maptile::play_sound (faceidx sound, int x, int y) const
		1599	{
		1600	if (!sound)
		1601	return;
		1602
		1603	for_all_players_on_map (pl, this)
		1604	if (client *ns = pl->ns)
		1605	{
		1606	int dx = x - pl->ob->x;
		1607	int dy = y - pl->ob->y;
		1608
		1609	int distance = idistance (dx, dy);
		1610
		1611	if (distance <= MAX_SOUND_DISTANCE)
		1612	ns->play_sound (sound, dx, dy);
		1613	}
		1614	}
		1615
		1616	void
		1617	maptile::say_msg (const char *msg, int x, int y) const
		1618	{
		1619	for_all_players (pl)
		1620	if (client *ns = pl->ns)
		1621	{
		1622	int dx = x - pl->ob->x;
		1623	int dy = y - pl->ob->y;
		1624
		1625	int distance = idistance (dx, dy);
		1626
		1627	if (distance <= MAX_SOUND_DISTANCE)
		1628	ns->send_msg (NDI_GREY | NDI_DEF, SAY_CHANNEL, msg);
		1629	}
		1630	}
		1631
		1632	dynbuf mapwalk_buf (sizeof (maprect) * 25, sizeof (maprect) * 25);
		1633
		1634	static void
		1635	split_to_tiles (dynbuf &buf, maptile *m, int x0, int y0, int x1, int y1, int dx, int dy)
		1636	{
		1637	// clip to map to the left
		1638	if (x0 < 0)
		1639	{
		1640	if (maptile *tile = m->tile_available (TILE_WEST, 1))
		1641	split_to_tiles (buf, tile, x0 + tile->width, y0, min (x1 + tile->width, tile->width), y1, dx - tile->width, dy);
		1642
		1643	if (x1 < 0) // entirely to the left
		1644	return;
		1645
		1646	x0 = 0;
		1647	}
		1648
		1649	// clip to map to the right
		1650	if (x1 > m->width)
		1651	{
		1652	if (maptile *tile = m->tile_available (TILE_EAST, 1))
		1653	split_to_tiles (buf, tile, max (x0 - m->width, 0), y0, x1 - m->width, y1, dx + m->width, dy);
		1654
		1655	if (x0 > m->width) // entirely to the right
		1656	return;
		1657
		1658	x1 = m->width;
		1659	}
		1660
		1661	// clip to map above
		1662	if (y0 < 0)
		1663	{
		1664	if (maptile *tile = m->tile_available (TILE_NORTH, 1))
		1665	split_to_tiles (buf, tile, x0, y0 + tile->height, x1, min (y1 + tile->height, tile->height), dx, dy - tile->height);
		1666
		1667	if (y1 < 0) // entirely above
		1668	return;
		1669
		1670	y0 = 0;
		1671	}
		1672
		1673	// clip to map below
		1674	if (y1 > m->height)
		1675	{
		1676	if (maptile *tile = m->tile_available (TILE_SOUTH, 1))
		1677	split_to_tiles (buf, tile, x0, max (y0 - m->height, 0), x1, y1 - m->height, dx, dy + m->height);
		1678
		1679	if (y0 > m->height) // entirely below
		1680	return;
		1681
		1682	y1 = m->height;
		1683	}
		1684
		1685	// if we get here, the rect is within the current map
		1686	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1687
		1688	r->m = m;
		1689	r->x0 = x0;
		1690	r->y0 = y0;
		1691	r->x1 = x1;
		1692	r->y1 = y1;
		1693	r->dx = dx;
		1694	r->dy = dy;
		1695	}
		1696
		1697	maprect *
		1698	maptile::split_to_tiles (dynbuf &buf, int x0, int y0, int x1, int y1)
		1699	{
		1700	buf.clear ();
		1701
		1702	::split_to_tiles (buf, this, x0, y0, x1, y1, 0, 0);
		1703
		1704	// add end marker
		1705	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1706	r->m = 0;
		1707
		1708	return (maprect *)buf.linearise ();
		1709	}
		1710

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