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Comparing deliantra/server/common/map.C (file contents):
Revision 1.64 by root, Mon Jan 1 12:28:45 2007 UTC vs.
Revision 1.177 by root, Wed Nov 11 23:27:56 2009 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 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
4	Copyright (C) 2001-2003 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001-2003,2007 Mark Wedel & Crossfire Development Team
5	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 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"
		28	#include "loader.h"
30	#include "path.h"	29	#include "path.h"
31		30
32	/*	31	//+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		32
46	/*	33	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		34
98	/* This rolls up wall, blocks_magic, blocks_view, etc, all into	35	/* This rolls up wall, blocks_magic, blocks_view, etc, all into
99	* one function that just returns a P_.. value (see map.h)	36	* one function that just returns a P_.. value (see map.h)
100	* it will also do map translation for tiled maps, returning	37	* it will also do map translation for tiled maps, returning
101	* new values into newmap, nx, and ny. Any and all of those	38	* new values into newmap, nx, and ny. Any and all of those
…		…
136	* by the caller.	73	* by the caller.
137	*/	74	*/
138	int	75	int
139	blocked_link (object *ob, maptile *m, int sx, int sy)	76	blocked_link (object *ob, maptile *m, int sx, int sy)
140	{	77	{
141	object *tmp;
142	int mflags, blocked;
143
144	/* Make sure the coordinates are valid - they should be, as caller should	78	/* Make sure the coordinates are valid - they should be, as caller should
145	* have already checked this.	79	* have already checked this.
146	*/	80	*/
147	if (OUT_OF_REAL_MAP (m, sx, sy))	81	if (OUT_OF_REAL_MAP (m, sx, sy))
148	{	82	{
149	LOG (llevError, "blocked_link: Passed map, x, y coordinates outside of map\n");	83	LOG (llevError, "blocked_link: Passed map, x, y coordinates outside of map\n");
150	return 1;	84	return 1;
151	}	85	}
152		86
153	/* Save some cycles - instead of calling get_map_flags(), just get the value	87	mapspace &ms = m->at (sx, sy);
154	* directly.
155	*/
156	mflags = m->at (sx, sy).flags ();
157		88
158	blocked = GET_MAP_MOVE_BLOCK (m, sx, sy);	89	int mflags = ms.flags ();
		90	int blocked = ms.move_block;
159		91
160	/* If space is currently not blocked by anything, no need to	92	/* If space is currently not blocked by anything, no need to
161	* go further. Not true for players - all sorts of special	93	* go further. Not true for players - all sorts of special
162	* things we need to do for players.	94	* things we need to do for players.
163	*/	95	*/
164	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && (blocked == 0))	96	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && (blocked == 0))
165	return 0;	97	return 0;
166		98
167	/* if there isn't anytyhing alive on this space, and this space isn't	99	/* 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	100	* 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	101	* 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	102	* or another. Likewise, only if something is blocking us do we
171	* need to investigate if there is a special circumstance that would	103	* need to investigate if there is a special circumstance that would
172	* let the player through (inventory checkers for example)	104	* let the player through (inventory checkers for example)
173	*/	105	*/
174	if (!(mflags & P_IS_ALIVE) && !OB_TYPE_MOVE_BLOCK (ob, blocked))	106	if (!(mflags & P_IS_ALIVE) && !OB_TYPE_MOVE_BLOCK (ob, blocked))
175	return 0;	107	return 0;
176		108
177	if (ob->head != NULL)
178	ob = ob->head;	109	ob = ob->head_ ();
179		110
180	/* We basically go through the stack of objects, and if there is	111	/* 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	112	* some other object that has NO_PASS or FLAG_ALIVE set, return
182	* true. If we get through the entire stack, that must mean	113	* true. If we get through the entire stack, that must mean
183	* ob is blocking it, so return 0.	114	* ob is blocking it, so return 0.
184	*/	115	*/
185	for (tmp = GET_MAP_OB (m, sx, sy); tmp; tmp = tmp->above)	116	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
186	{	117	{
187		118	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	{	119	{
191	/* If last_sp is set, the player/monster needs an object,	120	if (INVOKE_OBJECT (BLOCKED_MOVE, tmp, ob))
192	* so we check for it. If they don't have it, they can't	121	if (RESULT_INT (0))
193	* pass through this space.	122	return 1;
194	*/	123	else
195	if (tmp->last_sp)	124	continue;
		125
		126	if (tmp->type == CHECK_INV)
196	{	127	{
197	if (check_inv_recursive (ob, tmp) == NULL)	128	bool have = check_inv_recursive (ob, tmp);
		129
		130	// last_sp set means we block if we don't have.
		131	if (logical_xor (have, tmp->last_sp))
198	return 1;	132	return 1;
199	else	133	}
200	continue;	134	else if (tmp->type == T_MATCH)
		135	{
		136	// T_MATCH allows "entrance" iff the match is true
		137	// == blocks if the match fails
		138
		139	// we could have used an INVOKE_OBJECT, but decided against it, as we
		140	// assume that T_MATCH is relatively common.
		141	if (!match (tmp->slaying, ob, tmp, ob))
		142	return 1;
201	}	143	}
202	else	144	else
203	{	145	return 1; // unconditional block
204	/* In this case, the player must not have the object -	146
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	147	} else {
214	{	148	// space does not block the ob, directly, but
215	/* Broke apart a big nasty if into several here to make	149	// anything alive that is not a door still
216	* this more readable. first check - if the space blocks	150	// blocks anything but wizards.
217	* movement, can't move here.	151
218	* second - if a monster, can't move there, unles it is a	152	if (tmp->flag [FLAG_ALIVE]
219	* hidden dm	153	&& tmp->head_ () != ob
220	*/	154	&& tmp != ob
221	if (OB_MOVE_BLOCK (ob, tmp))	155	&& tmp->type != DOOR
222	return 1;	156	&& !tmp->flag [FLAG_WIZPASS])
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;	157	return 1;
226	}	158	}
227
228	}	159	}
		160
229	return 0;	161	return 0;
230	}	162	}
231		163
232
233	/*	164	/*
234	* Returns true if the given object can't fit in the given spot.	165	* Returns qthe blocking object if the given object can't fit in the given
235	* This is meant for multi space objects - for single space objecs,	166	* spot. This is meant for multi space objects - for single space objecs,
236	* just calling get_map_blocked and checking that against movement type	167	* just calling get_map_blocked and checking that against movement type
237	* of object. This function goes through all the parts of the	168	* of object. This function goes through all the parts of the multipart
238	* multipart object and makes sure they can be inserted.	169	* object and makes sure they can be inserted.
239	*	170	*
240	* While this doesn't call out of map, the get_map_flags does.	171	* While this doesn't call out of map, the get_map_flags does.
241	*	172	*
242	* This function has been used to deprecate arch_out_of_map -	173	* This function has been used to deprecate arch_out_of_map -
243	* this function also does that check, and since in most cases,	174	* this function also does that check, and since in most cases,
…		…
254	*	185	*
255	* Note this used to be arch_blocked, but with new movement	186	* Note this used to be arch_blocked, but with new movement
256	* code, we need to have actual object to check its move_type	187	* code, we need to have actual object to check its move_type
257	* against the move_block values.	188	* against the move_block values.
258	*/	189	*/
259	int	190	bool
260	ob_blocked (const object *ob, maptile *m, sint16 x, sint16 y)	191	object::blocked (maptile *m, int x, int y) const
261	{	192	{
262	archetype *tmp;	193	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	}	194	{
		195	mapxy pos (m, x + tmp->x, y + tmp->y);
276		196
277	for (tmp = ob->arch; tmp; tmp = tmp->more)	197	if (!pos.normalise ())
278	{	198	return 1;
279	flag = get_map_flags (m, &m1, x + tmp->clone.x, y + tmp->clone.y, &sx, &sy);
280		199
281	if (flag & P_OUT_OF_MAP)	200	mapspace &ms = *pos;
282	return P_OUT_OF_MAP;	201
283	if (flag & P_IS_ALIVE)	202	if (ms.flags () & P_IS_ALIVE)
284	return P_IS_ALIVE;	203	return 1;
285		204
286	mapspace &ms = m1->at (sx, sy);	205	/* However, often ob doesn't have any move type
287		206	* (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.	207	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
291	*/	208	*/
292
293	if (ob->move_type == 0 && ms.move_block != MOVE_ALL)	209	if (!move_type && ms.move_block != MOVE_ALL)
294	continue;	210	continue;
295		211
296	/* Note it is intentional that we check ob - the movement type of the	212	/* Note it is intentional that we check ob - the movement type of the
297	* head of the object should correspond for the entire object.	213	* head of the object should correspond for the entire object.
298	*/	214	*/
299	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))	215	if (ms.blocks (move_type))
300	return P_NO_PASS;	216	return 1;
301	}	217	}
302		218
303	return 0;	219	return 0;
304	}	220	}
305		221
306	/* When the map is loaded, load_object does not actually insert objects	222	//-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
317	container->inv = 0;
318	while (tmp)
319	{
320	next = tmp->below;
321	if (tmp->inv)
322	fix_container (tmp);
323
324	insert_ob_in_ob (tmp, container);
325	tmp = next;
326	}
327
328	/* sum_weight will go through and calculate what all the containers are
329	* carrying.
330	*/
331	sum_weight (container);
332	}
333		223
334	void	224	void
335	maptile::set_object_flag (int flag, int value)	225	maptile::set_object_flag (int flag, int value)
336	{	226	{
337	if (!spaces)	227	if (!spaces)
…		…
340	for (mapspace *ms = spaces + size (); ms-- > spaces; )	230	for (mapspace *ms = spaces + size (); ms-- > spaces; )
341	for (object *tmp = ms->bot; tmp; tmp = tmp->above)	231	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
342	tmp->flag [flag] = value;	232	tmp->flag [flag] = value;
343	}	233	}
344		234
		235	void
		236	maptile::post_load_original ()
		237	{
		238	if (!spaces)
		239	return;
		240
		241	set_object_flag (FLAG_OBJ_ORIGINAL);
		242
		243	for (mapspace *ms = spaces + size (); ms-- > spaces; )
		244	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
		245	INVOKE_OBJECT (RESET, tmp);
		246	}
		247
		248	void
		249	maptile::post_load ()
		250	{
		251	#if 0
		252	if (!spaces)
		253	return;
		254
		255	for (mapspace *ms = spaces + size (); ms-- > spaces; )
		256	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
		257	; // nop
		258	#endif
		259	}
		260
		261	//+GPL
		262
345	/* link_multipart_objects go through all the objects on the map looking	263	/* link_multipart_objects go through all the objects on the map looking
346	* for objects whose arch says they are multipart yet according to the	264	* for objects whose arch says they are multipart yet according to the
347	* info we have, they only have the head (as would be expected when	265	* info we have, they only have the head (as would be expected when
348	* they are saved). We do have to look for the old maps that did save	266	* they are saved).
349	* the more sections and not re-add sections for them.
350	*/	267	*/
351	void	268	void
352	maptile::link_multipart_objects ()	269	maptile::link_multipart_objects ()
353	{	270	{
354	if (!spaces)	271	if (!spaces)
355	return;	272	return;
356		273
357	for (mapspace *ms = spaces + size (); ms-- > spaces; )	274	for (mapspace *ms = spaces + size (); ms-- > spaces; )
358	for (object *tmp = ms->bot; tmp; )	275	{
		276	object *op = ms->bot;
		277	while (op)
359	{	278	{
360	object *above = tmp->above;
361
362	/* already multipart - don't do anything more */	279	/* already multipart - don't do anything more */
363	if (!tmp->head && !tmp->more)	280	if (op->head_ () == op && !op->more && op->arch->more)
364	{
365	/* If there is nothing more to this object, this for loop
366	* won't do anything.
367	*/
368	archetype *at;
369	object *last, *op;
370	for (at = tmp->arch->more, last = tmp;
371	at;
372	at = at->more, last = op)
373	{	281	{
374	op = arch_to_object (at);	282	op->remove ();
		283	op->expand_tail ();
375		284
376	/* update x,y coordinates */	285	// FIXME: INS_ON_TOP is just a workaround for the pentagram vs.
377	op->x += tmp->x;	286	// multi-tile monster bug, where INS_ABOVE_FLOOR_ONLY put the monsters
378	op->y += tmp->y;	287	// below the pentagrams... hopefully INS_ON_TOP doesn't break anything
379	op->head = tmp;
380	op->map = this;
381	last->more = op;
382	op->name = tmp->name;
383	op->title = tmp->title;
384
385	/* we could link all the parts onto tmp, and then just
386	* call insert_ob_in_map once, but the effect is the same,
387	* as insert_ob_in_map will call itself with each part, and
388	* the coding is simpler to just to it here with each part.
389	*/
390	insert_ob_in_map (op, op->map, tmp, INS_NO_MERGE | INS_ABOVE_FLOOR_ONLY | INS_NO_WALK_ON);	288	insert (op, op->x, op->y, 0, INS_NO_MERGE | INS_ON_TOP | INS_NO_WALK_ON);
		289
		290	op = ms->bot; // we are mutating the mapspace too much with INS_ON_TOP
		291	// so we have to reset the iteration through the mapspace
391	}	292	}
		293	else
		294	op = op->above;
392	}	295	}
393
394	tmp = above;
395	}	296	}
396	}	297	}
		298
		299	//-GPL
397		300
398	/*	301	/*
399	* Loads (ands parses) the objects into a given map from the specified	302	* Loads (ands parses) the objects into a given map from the specified
400	* file pointer.	303	* file pointer.
401	* mapflags is the same as we get with load_original_map
402	*/	304	*/
403	bool	305	bool
404	maptile::load_objects (object_thawer &thawer)	306	maptile::_load_objects (object_thawer &f)
405	{	307	{
406	int unique;	308	for (;;)
407	object *op, *prev = NULL, *last_more = NULL, *otmp;
408
409	op = object::create ();
410	op->map = this; /* To handle buttons correctly */
411
412	while (int i = load_object (thawer, op, 0))
413	{	309	{
414	/* if the archetype for the object is null, means that we	310	coroapi::cede_to_tick (); // cede once in a while
415	* got an invalid object. Don't do anything with it - the game	311
416	* or editor will not be able to do anything with it either.	312	switch (f.kw)
417	*/
418	if (op->arch == NULL)
419	{	313	{
420	LOG (llevDebug, "Discarding object without arch: %s\n", op->name ? (const char *) op->name : "(null)");	314	case KW_arch:
		315	if (object *op = object::read (f, this))
		316	{
		317	// TODO: why?
		318	if (op->inv)
		319	op->update_weight ();
		320
		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	}
		344	}
		345
421	continue;	346	continue;
422	}
423		347
424	switch (i)
425	{
426	case LL_NORMAL:
427	insert_ob_in_map (op, this, op, INS_NO_MERGE | INS_NO_WALK_ON | INS_ON_TOP | INS_MAP_LOAD);
428
429	if (op->inv)
430	sum_weight (op);
431
432	prev = op, last_more = op;
433	break;
434
435	case LL_MORE:	348	case KW_EOF:
436	insert_ob_in_map (op, this, op, INS_NO_MERGE | INS_NO_WALK_ON | INS_ABOVE_FLOOR_ONLY);	349	return true;
437	op->head = prev, last_more->more = op, last_more = op;	350
		351	default:
		352	if (!f.parse_error ("map file"))
		353	return false;
438	break;	354	break;
439	}	355	}
440		356
441	op = object::create ();	357	f.next ();
442	op->map = this;
443	}
444
445	op->destroy ();
446
447	#if 0
448	for (i = 0; i < width; i++)
449	for (j = 0; j < height; j++)
450	{
451	unique = 0;
452	/* check for unique items, or unique squares */
453	for (otmp = GET_MAP_OB (m, i, j); otmp; otmp = otmp->above)
454	{
455	if (QUERY_FLAG (otmp, FLAG_UNIQUE) || QUERY_FLAG (otmp, FLAG_OBJ_SAVE_ON_OVL))
456	unique = 1;
457
458	if (!(mapflags & (MAP_OVERLAY | MAP_PLAYER_UNIQUE) || unique))
459	SET_FLAG (otmp, FLAG_OBJ_ORIGINAL);
460	}
461	}	358	}
462	#endif
463		359
464	return true;	360	return true;
465	}	361	}
466		362
467	void	363	void
468	maptile::activate ()	364	maptile::activate ()
469	{	365	{
470	if (!spaces)	366	if (spaces)
471	return;
472
473	for (mapspace *ms = spaces + size (); ms-- > spaces; )	367	for (mapspace *ms = spaces + size (); ms-- > spaces; )
474	for (object *op = ms->bot; op; op = op->above)	368	for (object *op = ms->bot; op; op = op->above)
475	op->activate_recursive ();	369	op->activate_recursive ();
476	}	370	}
477		371
478	void	372	void
479	maptile::deactivate ()	373	maptile::deactivate ()
480	{	374	{
481	if (!spaces)	375	if (spaces)
482	return;
483
484	for (mapspace *ms = spaces + size (); ms-- > spaces; )	376	for (mapspace *ms = spaces + size (); ms-- > spaces; )
485	for (object *op = ms->bot; op; op = op->above)	377	for (object *op = ms->bot; op; op = op->above)
486	op->deactivate_recursive ();	378	op->deactivate_recursive ();
487	}	379	}
488		380
489	bool	381	bool
490	maptile::save_objects (object_freezer &freezer, int flags)	382	maptile::_save_objects (object_freezer &f, int flags)
491	{	383	{
		384	coroapi::cede_to_tick ();
		385
492	if (flags & IO_HEADER)	386	if (flags & IO_HEADER)
493	save_header (freezer);	387	_save_header (f);
494		388
495	if (!spaces)	389	if (!spaces)
496	return false;	390	return false;
497		391
498	for (int i = 0; i < size (); ++i)	392	for (int i = 0; i < size (); ++i)
499	{	393	{
500	int unique = 0;	394	bool unique = 0;
		395
501	for (object *op = spaces [i].bot; op; op = op->above)	396	for (object *op = spaces [i].bot; op; op = op->above)
502	{	397	{
503	if (op->flag [FLAG_UNIQUE] && op->flag [FLAG_IS_FLOOR])	398	unique |= op->flag [FLAG_UNIQUE] && op->flag [FLAG_IS_FLOOR];
504	unique = 1;
505		399
506	if (!op->can_map_save ())	400	if (expect_false (!op->can_map_save ()))
507	continue;	401	continue;
508		402
509	if (unique || op->flag [FLAG_UNIQUE])	403	if (expect_false (unique || op->flag [FLAG_UNIQUE]))
510	{	404	{
511	if (flags & IO_UNIQUES)	405	if (flags & IO_UNIQUES)
512	save_object (freezer, op, 1);	406	op->write (f);
513	}	407	}
514	else if (flags & IO_OBJECTS)	408	else if (expect_true (flags & IO_OBJECTS))
515	save_object (freezer, op, 1);	409	op->write (f);
516	}	410	}
517	}	411	}
518		412
		413	coroapi::cede_to_tick ();
		414
519	return true;	415	return true;
520	}	416	}
521		417
522	bool	418	bool
523	maptile::load_objects (const char *path, bool skip_header)	419	maptile::_save_objects (const char *path, int flags)
524	{	420	{
525	object_thawer thawer (path);	421	object_freezer freezer;
526		422
527	if (!thawer)	423	if (!_save_objects (freezer, flags))
528	return false;	424	return false;
529		425
530	if (skip_header)
531	for (;;)
532	{
533	keyword kw = thawer.get_kv ();
534
535	if (kw == KW_end)
536	break;
537
538	thawer.skip_kv (kw);
539	}
540
541	return load_objects (thawer);
542	}
543
544	bool
545	maptile::save_objects (const char *path, int flags)
546	{
547	object_freezer freezer;
548
549	if (!save_objects (freezer, flags))
550	return false;
551
552	return freezer.save (path);	426	return freezer.save (path);
553	}	427	}
554		428
555	maptile::maptile ()	429	maptile::maptile ()
556	{	430	{
557	in_memory = MAP_SWAPPED;	431	in_memory = MAP_SWAPPED;
558		432
559	/* The maps used to pick up default x and y values from the	433	/* The maps used to pick up default x and y values from the
560	* map archetype. Mimic that behaviour.	434	* map archetype. Mimic that behaviour.
561	*/	435	*/
562	width = 16;	436	width = 16;
563	height = 16;	437	height = 16;
564	reset_timeout = 0;
565	timeout = 300;	438	timeout = 300;
566	enter_x = 0;	439	max_items = MAX_ITEM_PER_ACTION;
567	enter_y = 0;	440	max_volume = 2000000; // 2m³
568	}	441	}
569		442
570	maptile::maptile (int w, int h)	443	maptile::maptile (int w, int h)
571	{	444	{
572	in_memory = MAP_SWAPPED;	445	in_memory = MAP_SWAPPED;
…		…
592	if (spaces)	465	if (spaces)
593	return;	466	return;
594		467
595	spaces = salloc0<mapspace> (size ());	468	spaces = salloc0<mapspace> (size ());
596	}	469	}
		470
		471	//+GPL
597		472
598	/* Takes a string from a map definition and outputs a pointer to the array of shopitems	473	/* Takes a string from a map definition and outputs a pointer to the array of shopitems
599	* corresponding to that string. Memory is allocated for this, it must be freed	474	* corresponding to that string. Memory is allocated for this, it must be freed
600	* at a later date.	475	* at a later date.
601	* Called by parse_map_headers below.	476	* Called by parse_map_headers below.
…		…
678	return items;	553	return items;
679	}	554	}
680		555
681	/* opposite of parse string, this puts the string that was originally fed in to	556	/* opposite of parse string, this puts the string that was originally fed in to
682	* the map (or something equivilent) into output_string. */	557	* the map (or something equivilent) into output_string. */
683	static void	558	static const char *
684	print_shop_string (maptile *m, char *output_string)	559	print_shop_string (maptile *m)
685	{	560	{
686	int i;	561	static dynbuf_text buf; buf.clear ();
687	char tmp[MAX_BUF];
688		562
689	strcpy (output_string, "");
690	for (i = 0; i < m->shopitems[0].index; i++)	563	for (int i = 0; i < m->shopitems[0].index; i++)
691	{	564	{
692	if (m->shopitems[i].typenum)	565	if (m->shopitems[i].typenum)
693	{	566	{
694	if (m->shopitems[i].strength)	567	if (m->shopitems[i].strength)
695	sprintf (tmp, "%s:%d;", m->shopitems[i].name, m->shopitems[i].strength);	568	buf.printf ("%s:%d;", m->shopitems[i].name, m->shopitems[i].strength);
696	else	569	else
697	sprintf (tmp, "%s;", m->shopitems[i].name);	570	buf.printf ("%s;", m->shopitems[i].name);
698	}	571	}
699	else	572	else
700	{	573	{
701	if (m->shopitems[i].strength)	574	if (m->shopitems[i].strength)
702	sprintf (tmp, "*:%d;", m->shopitems[i].strength);	575	buf.printf ("*:%d;", m->shopitems[i].strength);
703	else	576	else
704	sprintf (tmp, "*");	577	buf.printf ("*");
705	}	578	}
706
707	strcat (output_string, tmp);
708	}	579	}
		580
		581	return buf;
709	}	582	}
		583
		584	//-GPL
710		585
711	/* This loads the header information of the map. The header	586	/* This loads the header information of the map. The header
712	* contains things like difficulty, size, timeout, etc.	587	* contains things like difficulty, size, timeout, etc.
713	* this used to be stored in the map object, but with the	588	* this used to be stored in the map object, but with the
714	* addition of tiling, fields beyond that easily named in an	589	* addition of tiling, fields beyond that easily named in an
…		…
718	* This could be done in lex (like the object loader), but I think	593	* This could be done in lex (like the object loader), but I think
719	* currently, there are few enough fields this is not a big deal.	594	* currently, there are few enough fields this is not a big deal.
720	* MSW 2001-07-01	595	* MSW 2001-07-01
721	*/	596	*/
722	bool	597	bool
723	maptile::load_header (object_thawer &thawer)	598	maptile::_load_header (object_thawer &thawer)
724	{	599	{
725	char buf[HUGE_BUF], msgbuf[HUGE_BUF], maplorebuf[HUGE_BUF], *key = NULL, *value, *end;
726	int msgpos = 0;
727	int maplorepos = 0;
728
729	for (;;)	600	for (;;)
730	{	601	{
731	keyword kw = thawer.get_kv ();
732
733	switch (kw)	602	switch (thawer.kw)
734	{	603	{
735	case KW_EOF:
736	LOG (llevError, "%s: end of file while reading map header, aborting header load.\n", &path);
737	return false;
738
739	case KW_end:
740	return true;
741
742	case KW_msg:	604	case KW_msg:
743	thawer.get_ml (KW_endmsg, msg);	605	thawer.get_ml (KW_endmsg, msg);
744	break;	606	break;
745		607
746	case KW_lore: // CF+ extension	608	case KW_lore: // CF+ extension
…		…
777	case KW_winddir: thawer.get (winddir); break;	639	case KW_winddir: thawer.get (winddir); break;
778	case KW_sky: thawer.get (sky); break;	640	case KW_sky: thawer.get (sky); break;
779		641
780	case KW_per_player: thawer.get (per_player); break;	642	case KW_per_player: thawer.get (per_player); break;
781	case KW_per_party: thawer.get (per_party); break;	643	case KW_per_party: thawer.get (per_party); break;
		644	case KW_no_reset: thawer.get (no_reset); break;
		645	case KW_no_drop: thawer.get (no_drop); break;
782		646
783	case KW_region: get_region_by_name (thawer.get_str ()); break;	647	case KW_region: default_region = region::find (thawer.get_str ()); break;
784	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;	648	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;
785		649
786	// old names new names	650	// old names new names
787	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;	651	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;
788	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;	652	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;
…		…
797	case KW_tile_path_1: thawer.get (tile_path [0]); break;	661	case KW_tile_path_1: thawer.get (tile_path [0]); break;
798	case KW_tile_path_2: thawer.get (tile_path [1]); break;	662	case KW_tile_path_2: thawer.get (tile_path [1]); break;
799	case KW_tile_path_3: thawer.get (tile_path [2]); break;	663	case KW_tile_path_3: thawer.get (tile_path [2]); break;
800	case KW_tile_path_4: thawer.get (tile_path [3]); break;	664	case KW_tile_path_4: thawer.get (tile_path [3]); break;
801		665
		666	case KW_ERROR:
		667	set_key_text (thawer.kw_str, thawer.value);
		668	break;
		669
		670	case KW_end:
		671	thawer.next ();
		672	return true;
		673
802	default:	674	default:
803	LOG (llevError, "%s: skipping unknown key in map header: %s\n", &path, keyword_str [kw]);	675	if (!thawer.parse_error ("map", 0))
		676	return false;
804	break;	677	break;
805	}	678	}
		679
		680	thawer.next ();
806	}	681	}
807		682
808	abort ();	683	abort ();
809	}	684	}
810		685
811	bool	686	//+GPL
812	maptile::load_header (const char *path)
813	{
814	object_thawer thawer (path);
815
816	if (!thawer)
817	return false;
818
819	return load_header (thawer);
820	}
821		687
822	/******************************************************************************	688	/******************************************************************************
823	* This is the start of unique map handling code	689	* This is the start of unique map handling code
824	*****************************************************************************/	690	*****************************************************************************/
825		691
…		…
835	object *above = op->above;	701	object *above = op->above;
836		702
837	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))	703	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
838	unique = 1;	704	unique = 1;
839		705
840	if (op->head == NULL && (QUERY_FLAG (op, FLAG_UNIQUE) || unique))	706	if (op->head_ () == op && (QUERY_FLAG (op, FLAG_UNIQUE) || unique))
841	{
842	op->destroy_inv (false);
843	op->destroy ();	707	op->destroy ();
844	}
845		708
846	op = above;	709	op = above;
847	}	710	}
848	}	711	}
849	}	712	}
850		713
		714	//-GPL
		715
851	bool	716	bool
852	maptile::save_header (object_freezer &freezer)	717	maptile::_save_header (object_freezer &freezer)
853	{	718	{
854	#define MAP_OUT(k) freezer.put (KW_ ## k, k)	719	#define MAP_OUT(k) freezer.put (KW(k), k)
855	#define MAP_OUT2(k,v) freezer.put (KW_ ## k, v)	720	#define MAP_OUT2(k,v) freezer.put (KW(k), v)
856		721
857	MAP_OUT2 (arch, "map");	722	MAP_OUT2 (arch, CS(map));
858		723
859	if (name) MAP_OUT (name);	724	if (name) MAP_OUT (name);
860	MAP_OUT (swap_time);	725	MAP_OUT (swap_time);
861	MAP_OUT (reset_time);	726	MAP_OUT (reset_time);
862	MAP_OUT (reset_timeout);	727	MAP_OUT (reset_timeout);
863	MAP_OUT (fixed_resettime);	728	MAP_OUT (fixed_resettime);
		729	MAP_OUT (no_reset);
		730	MAP_OUT (no_drop);
864	MAP_OUT (difficulty);	731	MAP_OUT (difficulty);
865
866	if (region) MAP_OUT2 (region, region->name);	732	if (default_region) MAP_OUT2 (region, default_region->name);
867		733
868	if (shopitems)	734	if (shopitems) MAP_OUT2 (shopitems, print_shop_string (this));
869	{
870	char shop[MAX_BUF];
871	print_shop_string (this, shop);
872	MAP_OUT2 (shopitems, shop);
873	}
874
875	MAP_OUT (shopgreed);	735	MAP_OUT (shopgreed);
876	MAP_OUT (shopmin);	736	MAP_OUT (shopmin);
877	MAP_OUT (shopmax);	737	MAP_OUT (shopmax);
878	if (shoprace) MAP_OUT (shoprace);	738	if (shoprace) MAP_OUT (shoprace);
		739
879	MAP_OUT (darkness);	740	MAP_OUT (darkness);
880	MAP_OUT (width);	741	MAP_OUT (width);
881	MAP_OUT (height);	742	MAP_OUT (height);
882	MAP_OUT (enter_x);	743	MAP_OUT (enter_x);
883	MAP_OUT (enter_y);	744	MAP_OUT (enter_y);
884		745
885	if (msg) freezer.put (KW_msg , KW_endmsg , msg);	746	if (msg) freezer.put (KW(msg) , KW(endmsg) , msg);
886	if (maplore) freezer.put (KW_maplore, KW_endmaplore, maplore);	747	if (maplore) freezer.put (KW(maplore), KW(endmaplore), maplore);
887		748
888	MAP_OUT (outdoor);	749	MAP_OUT (outdoor);
889	MAP_OUT (temp);	750	MAP_OUT (temp);
890	MAP_OUT (pressure);	751	MAP_OUT (pressure);
891	MAP_OUT (humid);	752	MAP_OUT (humid);
…		…
900	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]);
901	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]);
902	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]);
903		764
904	freezer.put (this);	765	freezer.put (this);
905	freezer.put (KW_end);	766	freezer.put (KW(end));
906		767
907	return true;	768	return true;
908	}	769	}
909		770
910	bool	771	bool
911	maptile::save_header (const char *path)	772	maptile::_save_header (const char *path)
912	{	773	{
913	object_freezer freezer;	774	object_freezer freezer;
914		775
915	if (!save_header (freezer))	776	if (!_save_header (freezer))
916	return false;	777	return false;
917		778
918	return freezer.save (path);	779	return freezer.save (path);
919	}	780	}
		781
		782	//+GPL
920		783
921	/*	784	/*
922	* Remove and free all objects in the given map.	785	* Remove and free all objects in the given map.
923	*/	786	*/
924	void	787	void
925	maptile::clear ()	788	maptile::clear ()
926	{	789	{
927	if (!spaces)	790	if (spaces)
928	return;	791	{
929
930	for (mapspace *ms = spaces + size (); ms-- > spaces; )	792	for (mapspace *ms = spaces + size (); ms-- > spaces; )
931	while (object *op = ms->bot)	793	while (object *op = ms->bot)
932	{	794	{
		795	// manually remove, as to not trigger anything
		796	if (ms->bot = op->above)
		797	ms->bot->below = 0;
		798
		799	op->flag [FLAG_REMOVED] = true;
		800
		801	object *head = op->head_ ();
933	if (op->head)	802	if (op == head)
934	op = op->head;
935
936	op->destroy_inv (false);
937	op->destroy ();	803	op->destroy ();
		804	else if (head->map != op->map)
		805	{
		806	LOG (llevDebug, "bad luck for object crossing map borders: %s", head->debug_desc ());
		807	head->destroy ();
		808	}
		809	}
		810
		811	sfree0 (spaces, size ());
938	}	812	}
939
940	sfree (spaces, size ()), spaces = 0;
941		813
942	if (buttons)	814	if (buttons)
943	free_objectlinkpt (buttons), buttons = 0;	815	free_objectlinkpt (buttons), buttons = 0;
		816
		817	sfree0 (regions, size ());
		818	delete [] regionmap; regionmap = 0;
944	}	819	}
945		820
946	void	821	void
947	maptile::clear_header ()	822	maptile::clear_header ()
948	{	823	{
…		…
980	attachable::do_destroy ();	855	attachable::do_destroy ();
981		856
982	clear ();	857	clear ();
983	}	858	}
984		859
985	/*	860	/* decay and destroy perishable items in a map */
986	* Updates every button on the map (by calling update_button() for them).
987	*/
988	void	861	void
989	maptile::update_buttons ()	862	maptile::do_decay_objects ()
990	{	863	{
991	for (oblinkpt *obp = buttons; obp; obp = obp->next)	864	if (!spaces)
992	for (objectlink *ol = obp->link; ol; ol = ol->next)	865	return;
		866
		867	for (mapspace *ms = spaces + size (); ms-- > spaces; )
		868	for (object *above, *op = ms->bot; op; op = above)
993	{	869	{
994	if (!ol->ob)	870	above = op->above;
		871
		872	bool destroy = 0;
		873
		874	// do not decay anything above unique floor tiles (yet :)
		875	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
		876	break;
		877
		878	if (QUERY_FLAG (op, FLAG_IS_FLOOR)
		879	|| QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
		880	|| QUERY_FLAG (op, FLAG_UNIQUE)
		881	|| QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
		882	|| QUERY_FLAG (op, FLAG_UNPAID)
		883	|| op->is_alive ())
		884	; // do not decay
		885	else if (op->is_weapon ())
995	{	886	{
996	LOG (llevError, "Internal error in update_button (%s (%dx%d), connected %ld).\n",	887	op->stats.dam--;
997	ol->ob ? (const char *) ol->ob->name : "null", ol->ob ? ol->ob->x : -1, ol->ob ? ol->ob->y : -1, obp->value);	888	if (op->stats.dam < 0)
998	continue;	889	destroy = 1;
999	}	890	}
1000		891	else if (op->is_armor ())
1001	if (ol->ob->type == BUTTON || ol->ob->type == PEDESTAL)
1002	{	892	{
1003	update_button (ol->ob);	893	op->stats.ac--;
1004	break;	894	if (op->stats.ac < 0)
		895	destroy = 1;
1005	}	896	}
		897	else if (op->type == FOOD)
		898	{
		899	op->stats.food -= rndm (5, 20);
		900	if (op->stats.food < 0)
		901	destroy = 1;
		902	}
		903	else
		904	{
		905	int mat = op->materials;
		906
		907	if (mat & M_PAPER
		908	|| mat & M_LEATHER
		909	|| mat & M_WOOD
		910	|| mat & M_ORGANIC
		911	|| mat & M_CLOTH
		912	|| mat & M_LIQUID
		913	|| (mat & M_IRON && rndm (1, 5) == 1)
		914	|| (mat & M_GLASS && rndm (1, 2) == 1)
		915	|| ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
		916	|| ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
		917	|| (mat & M_ICE && temp > 32))
		918	destroy = 1;
		919	}
		920
		921	/* adjust overall chance below */
		922	if (destroy && rndm (0, 1))
		923	op->destroy ();
1006	}	924	}
1007	}	925	}
1008		926
1009	/*	927	/*
1010	* This routine is supposed to find out the difficulty of the map.	928	* This routine is supposed to find out the difficulty of the map.
1011	* difficulty does not have a lot to do with character level,	929	* difficulty does not have a lot to do with character level,
1012	* but does have a lot to do with treasure on the map.	930	* but does have a lot to do with treasure on the map.
1013	*	931	*
1014	* Difficulty can now be set by the map creature. If the value stored	932	* Difficulty can now be set by the map creator. If the value stored
1015	* in the map is zero, then use this routine. Maps should really	933	* in the map is zero, then use this routine. Maps should really
1016	* have a difficulty set than using this function - human calculation	934	* have a difficulty set rather than using this function - human calculation
1017	* is much better than this functions guesswork.	935	* is much better than this function's guesswork.
1018	*/	936	*/
1019	int	937	int
1020	maptile::estimate_difficulty () const	938	maptile::estimate_difficulty () const
1021	{	939	{
1022	long monster_cnt = 0;	940	long monster_cnt = 0;
…		…
1034		952
1035	if (QUERY_FLAG (op, FLAG_GENERATOR))	953	if (QUERY_FLAG (op, FLAG_GENERATOR))
1036	{	954	{
1037	total_exp += op->stats.exp;	955	total_exp += op->stats.exp;
1038		956
1039	if (archetype *at = type_to_archetype (GENERATE_TYPE (op)))	957	if (archetype *at = op->other_arch)
		958	{
1040	total_exp += at->clone.stats.exp * 8;	959	total_exp += at->stats.exp * 8;
1041
1042	monster_cnt++;	960	monster_cnt++;
		961	}
		962
		963	for (object *inv = op->inv; inv; inv = inv->below)
		964	{
		965	total_exp += op->stats.exp * 8;
		966	monster_cnt++;
		967	}
1043	}	968	}
1044	}	969	}
1045		970
1046	avgexp = (double) total_exp / monster_cnt;	971	avgexp = (double) total_exp / monster_cnt;
1047		972
…		…
1060	* postive values make it darker, negative make it brighter	985	* postive values make it darker, negative make it brighter
1061	*/	986	*/
1062	int	987	int
1063	maptile::change_map_light (int change)	988	maptile::change_map_light (int change)
1064	{	989	{
1065	int new_level = darkness + change;
1066
1067	/* Nothing to do */	990	/* Nothing to do */
1068	if (!change || (new_level <= 0 && darkness == 0) || (new_level >= MAX_DARKNESS && darkness >= MAX_DARKNESS))	991	if (!change)
1069	return 0;	992	return 0;
1070		993
1071	/* inform all players on the map */	994	/* inform all players on the map */
1072	if (change > 0)	995	if (change > 0)
1073	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");	996	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");
1074	else	997	else
1075	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");	998	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");
1076		999
1077	/* Do extra checking. since darkness is a unsigned value,	1000	darkness = clamp (darkness + change, -MAX_DARKNESS, MAX_DARKNESS);
1078	* we need to be extra careful about negative values.
1079	* In general, the checks below are only needed if change
1080	* is not +/-1
1081	*/
1082	if (new_level < 0)
1083	darkness = 0;
1084	else if (new_level >= MAX_DARKNESS)
1085	darkness = MAX_DARKNESS;
1086	else
1087	darkness = new_level;
1088		1001
1089	/* All clients need to get re-updated for the change */	1002	/* All clients need to get re-updated for the change */
1090	update_all_map_los (this);	1003	update_all_map_los (this);
		1004
1091	return 1;	1005	return 1;
1092	}	1006	}
1093		1007
1094	/*	1008	/*
1095	* This function updates various attributes about a specific space	1009	* This function updates various attributes about a specific space
…		…
1098	* through, etc)	1012	* through, etc)
1099	*/	1013	*/
1100	void	1014	void
1101	mapspace::update_ ()	1015	mapspace::update_ ()
1102	{	1016	{
1103	object *tmp, *last = 0;	1017	object *last = 0;
1104	uint8 flags = 0, light = 0, anywhere = 0;	1018	uint8 flags = P_UPTODATE;
1105	New_Face *top, *floor, *middle;	1019	sint8 light = 0;
1106	object *top_obj, *floor_obj, *middle_obj;
1107	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;	1020	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;
		1021	uint64_t volume = 0;
		1022	uint32_t items = 0;
		1023	object *anywhere = 0;
		1024	uint8_t middle_visibility = 0;
1108		1025
1109	middle = blank_face;	1026	//object *middle = 0;
1110	top = blank_face;	1027	//object *top = 0;
1111	floor = blank_face;	1028	//object *floor = 0;
		1029	// this seems to generate better code than using locals, above
		1030	object *&top = faces_obj[0] = 0;
		1031	object *&middle = faces_obj[1] = 0;
		1032	object *&floor = faces_obj[2] = 0;
1112		1033
1113	middle_obj = 0;	1034	object::flags_t allflags; // all flags of all objects or'ed together
1114	top_obj = 0;
1115	floor_obj = 0;
1116		1035
1117	for (tmp = bot; tmp; last = tmp, tmp = tmp->above)	1036	for (object *tmp = bot; tmp; last = tmp, tmp = tmp->above)
1118	{	1037	{
1119	/* This could be made additive I guess (two lights better than	1038	// Lights are additive, up to MAX_LIGHT_RADIUS, see los.C)
1120	* one). But if so, it shouldn't be a simple additive - 2
1121	* light bulbs do not illuminate twice as far as once since
1122	* it is a dissapation factor that is cubed.
1123	*/
1124	if (tmp->glow_radius > light)
1125	light = tmp->glow_radius;	1039	light += tmp->glow_radius;
1126		1040
1127	/* This call is needed in order to update objects the player	1041	/* This call is needed in order to update objects the player
1128	* is standing in that have animations (ie, grass, fire, etc).	1042	* is standing in that have animations (ie, grass, fire, etc).
1129	* However, it also causes the look window to be re-drawn	1043	* However, it also causes the look window to be re-drawn
1130	* 3 times each time the player moves, because many of the	1044	* 3 times each time the player moves, because many of the
1131	* functions the move_player calls eventualy call this.	1045	* functions the move_player calls eventualy call this.
1132	*	1046	*
1133	* Always put the player down for drawing.	1047	* Always put the player down for drawing.
1134	*/	1048	*/
1135	if (!tmp->invisible)	1049	if (expect_true (!tmp->invisible))
1136	{	1050	{
1137	if ((tmp->type == PLAYER || QUERY_FLAG (tmp, FLAG_MONSTER)))	1051	if (expect_false (tmp->type == PLAYER || tmp->flag [FLAG_MONSTER]))
1138	{
1139	top = tmp->face;
1140	top_obj = tmp;	1052	top = tmp;
1141	}	1053	else if (expect_false (tmp->flag [FLAG_IS_FLOOR]))
1142	else if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1143	{	1054	{
1144	/* If we got a floor, that means middle and top were below it,	1055	/* If we got a floor, that means middle and top were below it,
1145	* so should not be visible, so we clear them.	1056	* so should not be visible, so we clear them.
1146	*/	1057	*/
1147	middle = blank_face;	1058	middle = 0;
1148	top = blank_face;	1059	top = 0;
1149	floor = tmp->face;
1150	floor_obj = tmp;	1060	floor = tmp;
		1061	volume = 0;
		1062	items = 0;
1151	}	1063	}
1152	/* Flag anywhere have high priority */	1064	else
1153	else if (QUERY_FLAG (tmp, FLAG_SEE_ANYWHERE))
1154	{	1065	{
1155	middle = tmp->face;	1066	if (expect_true (!tmp->flag [FLAG_NO_PICK]))
		1067	{
		1068	++items;
		1069	volume += tmp->volume ();
		1070	}
1156		1071
1157	middle_obj = tmp;	1072	/* Flag anywhere have high priority */
		1073	if (expect_false (tmp->flag [FLAG_SEE_ANYWHERE]))
1158	anywhere = 1;	1074	anywhere = tmp;
		1075
		1076	/* Find the highest visible face around. If equal
		1077	* visibilities, we still want the one nearer to the
		1078	* top
		1079	*/
		1080	if (expect_false (::faces [tmp->face].visibility >= middle_visibility))
		1081	{
		1082	middle_visibility = ::faces [tmp->face].visibility;
		1083	middle = tmp;
		1084	}
1159	}	1085	}
1160	/* Find the highest visible face around. If equal
1161	* visibilities, we still want the one nearer to the
1162	* top
1163	*/
1164	else if (middle == blank_face || (tmp->face->visibility > middle->visibility && !anywhere))
1165	{
1166	middle = tmp->face;
1167	middle_obj = tmp;
1168	}
1169	}
1170
1171	if (tmp == tmp->above)
1172	{
1173	LOG (llevError, "Error in structure of map\n");
1174	exit (-1);
1175	}	1086	}
1176		1087
1177	move_slow |= tmp->move_slow;	1088	move_slow |= tmp->move_slow;
1178	move_block |= tmp->move_block;	1089	move_block |= tmp->move_block;
1179	move_on |= tmp->move_on;	1090	move_on |= tmp->move_on;
1180	move_off |= tmp->move_off;	1091	move_off |= tmp->move_off;
1181	move_allow |= tmp->move_allow;	1092	move_allow |= tmp->move_allow;
1182		1093
1183	if (QUERY_FLAG (tmp, FLAG_BLOCKSVIEW)) flags |= P_BLOCKSVIEW;	1094	allflags |= tmp->flag;
1184	if (QUERY_FLAG (tmp, FLAG_NO_MAGIC)) flags |= P_NO_MAGIC;	1095
1185	if (tmp->type == PLAYER) flags |= P_PLAYER;	1096	if (tmp->type == PLAYER) flags |= P_PLAYER;
1186	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;	1097	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;
1187	if (QUERY_FLAG (tmp, FLAG_ALIVE)) flags |= P_IS_ALIVE;
1188	if (QUERY_FLAG (tmp, FLAG_DAMNED)) flags |= P_NO_CLERIC;
1189	}	1098	}
1190		1099
1191	this->light = light;	1100	// FLAG_SEE_ANYWHERE takes precedence
		1101	if (anywhere)
		1102	middle = anywhere;
		1103
		1104	// ORing all flags together and checking them here is much faster
		1105	if (allflags [FLAG_BLOCKSVIEW]) flags |= P_BLOCKSVIEW;
		1106	if (allflags [FLAG_NO_MAGIC] ) flags |= P_NO_MAGIC;
		1107	if (allflags [FLAG_ALIVE] ) flags |= P_IS_ALIVE;
		1108	if (allflags [FLAG_DAMNED] ) flags |= P_NO_CLERIC;
		1109
		1110	this->light = min (light, MAX_LIGHT_RADIUS);
1192	this->flags_ = flags;	1111	this->flags_ = flags;
1193	this->move_block = move_block & ~move_allow;	1112	this->move_block = move_block & ~move_allow;
1194	this->move_on = move_on;	1113	this->move_on = move_on;
1195	this->move_off = move_off;	1114	this->move_off = move_off;
1196	this->move_slow = move_slow;	1115	this->move_slow = move_slow;
		1116	this->volume_ = (volume + 1023) / 1024;
		1117	this->items_ = upos_min (items, 65535); // assume nrof <= 2**31
1197		1118
1198	/* At this point, we have a floor face (if there is a floor),	1119	/* At this point, we have a floor face (if there is a floor),
1199	* and the floor is set - we are not going to touch it at	1120	* and the floor is set - we are not going to touch it at
1200	* this point.	1121	* this point.
1201	* middle contains the highest visibility face.	1122	* middle contains the highest visibility face.
…		…
1208	* middle face. This should not happen, as we already have the	1129	* middle face. This should not happen, as we already have the
1209	* else statement above so middle should not get set. OTOH, it	1130	* else statement above so middle should not get set. OTOH, it
1210	* may be possible for the faces to match but be different objects.	1131	* may be possible for the faces to match but be different objects.
1211	*/	1132	*/
1212	if (top == middle)	1133	if (top == middle)
1213	middle = blank_face;	1134	middle = 0;
1214		1135
1215	/* There are three posibilities at this point:	1136	/* There are three posibilities at this point:
1216	* 1) top face is set, need middle to be set.	1137	* 1) top face is set, need middle to be set.
1217	* 2) middle is set, need to set top.	1138	* 2) middle is set, need to set top.
1218	* 3) neither middle or top is set - need to set both.	1139	* 3) neither middle or top is set - need to set both.
1219	*/	1140	*/
1220		1141
1221	for (tmp = last; tmp; tmp = tmp->below)	1142	for (object *tmp = last; tmp; tmp = tmp->below)
1222	{	1143	{
1223	/* Once we get to a floor, stop, since we already have a floor object */	1144	/* Once we get to a floor, stop, since we already have a floor object */
1224	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1145	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1225	break;	1146	break;
1226		1147
1227	/* If two top faces are already set, quit processing */	1148	/* If two top faces are already set, quit processing */
1228	if ((top != blank_face) && (middle != blank_face))	1149	if (top && middle)
1229	break;	1150	break;
1230		1151
1231	/* Only show visible faces, unless its the editor - show all */	1152	/* Only show visible faces */
1232	if (!tmp->invisible || editor)	1153	if (!tmp->invisible)
1233	{	1154	{
1234	/* Fill in top if needed */	1155	/* Fill in top if needed */
1235	if (top == blank_face)	1156	if (!top)
1236	{	1157	{
1237	top = tmp->face;
1238	top_obj = tmp;	1158	top = tmp;
1239	if (top == middle)	1159	if (top == middle)
1240	middle = blank_face;	1160	middle = 0;
1241	}	1161	}
1242	else	1162	else
1243	{	1163	{
1244	/* top is already set - we should only get here if	1164	/* top is already set - we should only get here if
1245	* middle is not set	1165	* middle is not set
1246	*	1166	*
1247	* Set the middle face and break out, since there is nothing	1167	* Set the middle face and break out, since there is nothing
1248	* more to fill in. We don't check visiblity here, since	1168	* more to fill in. We don't check visiblity here, since
1249	*	1169	*
1250	*/	1170	*/
1251	if (tmp->face != top)	1171	if (tmp != top)
1252	{	1172	{
1253	middle = tmp->face;
1254	middle_obj = tmp;	1173	middle = tmp;
1255	break;	1174	break;
1256	}	1175	}
1257	}	1176	}
1258	}	1177	}
1259	}	1178	}
1260		1179
1261	if (middle == floor)	1180	if (middle == floor)
1262	middle = blank_face;	1181	middle = 0;
1263		1182
1264	if (top == middle)	1183	if (top == middle)
1265	middle = blank_face;	1184	middle = 0;
1266		1185
1267	faces [0] = top; faces_obj [0] = top != blank_face ? top_obj : 0;	1186	#if 0
1268	faces [1] = middle; faces_obj [1] = middle != blank_face ? middle_obj : 0;	1187	faces_obj [0] = top;
1269	faces [2] = floor; faces_obj [2] = floor != blank_face ? floor_obj : 0;	1188	faces_obj [1] = middle;
		1189	faces_obj [2] = floor;
		1190	#endif
1270	}	1191	}
1271		1192
1272	/* this updates the orig_map->tile_map[tile_num] value after loading	1193	maptile *
1273	* the map. It also takes care of linking back the freshly loaded	1194	maptile::tile_available (int dir, bool load)
1274	* maps tile_map values if it tiles back to this one. It returns
1275	* the value of orig_map->tile_map[tile_num]. It really only does this
1276	* so that it is easier for calling functions to verify success.
1277	*/
1278	static maptile *
1279	load_and_link_tiled_map (maptile *orig_map, int tile_num)
1280	{	1195	{
1281	maptile *mp = orig_map->load_map_sync (orig_map->tile_path [tile_num], orig_map);	1196	if (tile_path[dir])
1282
1283	if (!mp || mp->in_memory != MAP_IN_MEMORY)
1284	{
1285	// emergency mode, manufacture a dummy map, this creates a memleak, but thats fine
1286	LOG (llevError, "FATAL: cannot load tiled map %s from %s, leaking memory and worse!\n",
1287	&orig_map->tile_path[tile_num], &orig_map->path);
1288	mp = new maptile (1, 1);
1289	mp->alloc ();
1290	mp->in_memory = MAP_IN_MEMORY;
1291	}	1197	{
		1198	if (tile_map[dir] && (!load || tile_map[dir]->in_memory == MAP_ACTIVE))
		1199	return tile_map[dir];
1292		1200
1293	int dest_tile = (tile_num + 2) % 4;	1201	if ((tile_map[dir] = find_async (tile_path[dir], this, load)))
		1202	return tile_map[dir];
		1203	}
1294		1204
1295	orig_map->tile_map[tile_num] = mp;
1296
1297	// optimisation: back-link map to origin map if euclidean
1298	//TODO: non-euclidean maps MUST GO
1299	if (orig_map->tile_map[tile_num]->tile_path[dest_tile] == orig_map->path)
1300	orig_map->tile_map[tile_num]->tile_map[dest_tile] = orig_map;
1301
1302	return mp;	1205	return 0;
1303	}	1206	}
1304		1207
1305	/* this returns TRUE if the coordinates (x,y) are out of	1208	/* this returns TRUE if the coordinates (x,y) are out of
1306	* map m. This function also takes into account any	1209	* map m. This function also takes into account any
1307	* tiling considerations, loading adjacant maps as needed.	1210	* tiling considerations, loading adjacant maps as needed.
…		…
1320	if (!m)	1223	if (!m)
1321	return 0;	1224	return 0;
1322		1225
1323	if (x < 0)	1226	if (x < 0)
1324	{	1227	{
1325	if (!m->tile_path[3])	1228	if (!m->tile_available (3))
1326	return 1;	1229	return 1;
1327		1230
1328	if (!m->tile_map[3] || m->tile_map[3]->in_memory != MAP_IN_MEMORY)
1329	load_and_link_tiled_map (m, 3);
1330
1331	return out_of_map (m->tile_map[3], x + m->tile_map[3]->width, y);	1231	return out_of_map (m->tile_map[3], x + m->tile_map[3]->width, y);
1332	}	1232	}
1333		1233
1334	if (x >= m->width)	1234	if (x >= m->width)
1335	{	1235	{
1336	if (!m->tile_path[1])	1236	if (!m->tile_available (1))
1337	return 1;	1237	return 1;
1338		1238
1339	if (!m->tile_map[1] || m->tile_map[1]->in_memory != MAP_IN_MEMORY)
1340	load_and_link_tiled_map (m, 1);
1341
1342	return out_of_map (m->tile_map[1], x - m->width, y);	1239	return out_of_map (m->tile_map[1], x - m->width, y);
1343	}	1240	}
1344		1241
1345	if (y < 0)	1242	if (y < 0)
1346	{	1243	{
1347	if (!m->tile_path[0])	1244	if (!m->tile_available (0))
1348	return 1;	1245	return 1;
1349		1246
1350	if (!m->tile_map[0] || m->tile_map[0]->in_memory != MAP_IN_MEMORY)
1351	load_and_link_tiled_map (m, 0);
1352
1353	return out_of_map (m->tile_map[0], x, y + m->tile_map[0]->height);	1247	return out_of_map (m->tile_map[0], x, y + m->tile_map[0]->height);
1354	}	1248	}
1355		1249
1356	if (y >= m->height)	1250	if (y >= m->height)
1357	{	1251	{
1358	if (!m->tile_path[2])	1252	if (!m->tile_available (2))
1359	return 1;	1253	return 1;
1360
1361	if (!m->tile_map[2] || m->tile_map[2]->in_memory != MAP_IN_MEMORY)
1362	load_and_link_tiled_map (m, 2);
1363		1254
1364	return out_of_map (m->tile_map[2], x, y - m->height);	1255	return out_of_map (m->tile_map[2], x, y - m->height);
1365	}	1256	}
1366		1257
1367	/* Simple case - coordinates are within this local	1258	/* Simple case - coordinates are within this local
…		…
1372		1263
1373	/* This is basically the same as out_of_map above, but	1264	/* This is basically the same as out_of_map above, but
1374	* instead we return NULL if no map is valid (coordinates	1265	* instead we return NULL if no map is valid (coordinates
1375	* out of bounds and no tiled map), otherwise it returns	1266	* out of bounds and no tiled map), otherwise it returns
1376	* the map as that the coordinates are really on, and	1267	* the map as that the coordinates are really on, and
1377	* updates x and y to be the localized coordinates.	1268	* updates x and y to be the localised coordinates.
1378	* Using this is more efficient of calling out_of_map	1269	* Using this is more efficient of calling out_of_map
1379	* and then figuring out what the real map is	1270	* and then figuring out what the real map is
1380	*/	1271	*/
1381	maptile *	1272	maptile *
1382	get_map_from_coord (maptile *m, sint16 *x, sint16 *y)	1273	maptile::xy_find (sint16 &x, sint16 &y)
1383	{	1274	{
1384	if (*x < 0)	1275	if (x < 0)
1385	{	1276	{
1386	if (!m->tile_path[3])	1277	if (!tile_available (3))
1387	return 0;	1278	return 0;
1388		1279
1389	if (!m->tile_map[3] || m->tile_map[3]->in_memory != MAP_IN_MEMORY)
1390	load_and_link_tiled_map (m, 3);
1391
1392	*x += m->tile_map[3]->width;	1280	x += tile_map[3]->width;
1393	return (get_map_from_coord (m->tile_map[3], x, y));	1281	return tile_map[3]->xy_find (x, y);
1394	}	1282	}
1395		1283
1396	if (*x >= m->width)	1284	if (x >= width)
1397	{	1285	{
1398	if (!m->tile_path[1])	1286	if (!tile_available (1))
1399	return 0;	1287	return 0;
1400		1288
1401	if (!m->tile_map[1] || m->tile_map[1]->in_memory != MAP_IN_MEMORY)
1402	load_and_link_tiled_map (m, 1);
1403
1404	*x -= m->width;	1289	x -= width;
1405	return (get_map_from_coord (m->tile_map[1], x, y));	1290	return tile_map[1]->xy_find (x, y);
1406	}	1291	}
1407		1292
1408	if (*y < 0)	1293	if (y < 0)
1409	{	1294	{
1410	if (!m->tile_path[0])	1295	if (!tile_available (0))
1411	return 0;	1296	return 0;
1412		1297
1413	if (!m->tile_map[0] || m->tile_map[0]->in_memory != MAP_IN_MEMORY)
1414	load_and_link_tiled_map (m, 0);
1415
1416	*y += m->tile_map[0]->height;	1298	y += tile_map[0]->height;
1417	return (get_map_from_coord (m->tile_map[0], x, y));	1299	return tile_map[0]->xy_find (x, y);
1418	}	1300	}
1419		1301
1420	if (*y >= m->height)	1302	if (y >= height)
1421	{	1303	{
1422	if (!m->tile_path[2])	1304	if (!tile_available (2))
1423	return 0;	1305	return 0;
1424		1306
1425	if (!m->tile_map[2] || m->tile_map[2]->in_memory != MAP_IN_MEMORY)
1426	load_and_link_tiled_map (m, 2);
1427
1428	*y -= m->height;	1307	y -= height;
1429	return (get_map_from_coord (m->tile_map[2], x, y));	1308	return tile_map[2]->xy_find (x, y);
1430	}	1309	}
1431		1310
1432	/* Simple case - coordinates are within this local	1311	/* Simple case - coordinates are within this local
1433	* map.	1312	* map.
1434	*/	1313	*/
1435	return m;	1314	return this;
1436	}	1315	}
1437		1316
1438	/**	1317	/**
1439	* Return whether map2 is adjacent to map1. If so, store the distance from	1318	* Return whether map2 is adjacent to map1. If so, store the distance from
1440	* map1 to map2 in dx/dy.	1319	* map1 to map2 in dx/dy.
1441	*/	1320	*/
1442	static int	1321	int
1443	adjacent_map (const maptile *map1, const maptile *map2, int *dx, int *dy)	1322	adjacent_map (const maptile *map1, const maptile *map2, int *dx, int *dy)
1444	{	1323	{
1445	if (!map1 || !map2)	1324	if (!map1 || !map2)
1446	return 0;	1325	return 0;
1447		1326
		1327	//TODO: this doesn't actually check correctly when intermediate maps are not loaded
		1328	//fix: compare paths instead (this is likely faster, too!)
1448	if (map1 == map2)	1329	if (map1 == map2)
1449	{	1330	{
1450	*dx = 0;	1331	*dx = 0;
1451	*dy = 0;	1332	*dy = 0;
1452	}	1333	}
…		…
1512	}	1393	}
1513	else	1394	else
1514	return 0;	1395	return 0;
1515		1396
1516	return 1;	1397	return 1;
		1398	}
		1399
		1400	maptile *
		1401	maptile::xy_load (sint16 &x, sint16 &y)
		1402	{
		1403	maptile *map = xy_find (x, y);
		1404
		1405	if (map)
		1406	map->load_sync ();
		1407
		1408	return map;
		1409	}
		1410
		1411	maptile *
		1412	get_map_from_coord (maptile *m, sint16 *x, sint16 *y)
		1413	{
		1414	return m->xy_load (*x, *y);
1517	}	1415	}
1518		1416
1519	/* From map.c	1417	/* From map.c
1520	* This is used by get_player to determine where the other	1418	* This is used by get_player to determine where the other
1521	* creature is. get_rangevector takes into account map tiling,	1419	* creature is. get_rangevector takes into account map tiling,
1522	* so you just can not look the the map coordinates and get the	1420	* so you just can not look the the map coordinates and get the
1523	* righte value. distance_x/y are distance away, which	1421	* righte value. distance_x/y are distance away, which
1524	* can be negativbe. direction is the crossfire direction scheme	1422	* can be negative. direction is the crossfire direction scheme
1525	* that the creature should head. part is the part of the	1423	* that the creature should head. part is the part of the
1526	* monster that is closest.	1424	* monster that is closest.
1527	*	1425	*
1528	* get_rangevector looks at op1 and op2, and fills in the	1426	* get_rangevector looks at op1 and op2, and fills in the
1529	* structure for op1 to get to op2.	1427	* structure for op1 to get to op2.
…		…
1540	get_rangevector (object *op1, object *op2, rv_vector * retval, int flags)	1438	get_rangevector (object *op1, object *op2, rv_vector * retval, int flags)
1541	{	1439	{
1542	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))	1440	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))
1543	{	1441	{
1544	/* be conservative and fill in _some_ data */	1442	/* be conservative and fill in _some_ data */
1545	retval->distance = 100000;	1443	retval->distance = 10000;
1546	retval->distance_x = 32767;	1444	retval->distance_x = 10000;
1547	retval->distance_y = 32767;	1445	retval->distance_y = 10000;
1548	retval->direction = 0;	1446	retval->direction = 0;
1549	retval->part = 0;	1447	retval->part = 0;
1550	}	1448	}
1551	else	1449	else
1552	{	1450	{
…		…
1557		1455
1558	best = op1;	1456	best = op1;
1559	/* If this is multipart, find the closest part now */	1457	/* If this is multipart, find the closest part now */
1560	if (!(flags & 0x1) && op1->more)	1458	if (!(flags & 0x1) && op1->more)
1561	{	1459	{
1562	object *tmp;
1563	int best_distance = retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y, tmpi;	1460	int best_distance = retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y, tmpi;
1564		1461
1565	/* we just take the offset of the piece to head to figure	1462	/* we just take the offset of the piece to head to figure
1566	* distance instead of doing all that work above again	1463	* distance instead of doing all that work above again
1567	* since the distance fields we set above are positive in the	1464	* since the distance fields we set above are positive in the
1568	* same axis as is used for multipart objects, the simply arithmetic	1465	* same axis as is used for multipart objects, the simply arithmetic
1569	* below works.	1466	* below works.
1570	*/	1467	*/
1571	for (tmp = op1->more; tmp != NULL; tmp = tmp->more)	1468	for (object *tmp = op1->more; tmp; tmp = tmp->more)
1572	{	1469	{
1573	tmpi = (op1->x - tmp->x + retval->distance_x) * (op1->x - tmp->x + retval->distance_x) +	1470	tmpi = (op1->x - tmp->x + retval->distance_x) * (op1->x - tmp->x + retval->distance_x) +
1574	(op1->y - tmp->y + retval->distance_y) * (op1->y - tmp->y + retval->distance_y);	1471	(op1->y - tmp->y + retval->distance_y) * (op1->y - tmp->y + retval->distance_y);
1575	if (tmpi < best_distance)	1472	if (tmpi < best_distance)
1576	{	1473	{
1577	best_distance = tmpi;	1474	best_distance = tmpi;
1578	best = tmp;	1475	best = tmp;
1579	}	1476	}
1580	}	1477	}
		1478
1581	if (best != op1)	1479	if (best != op1)
1582	{	1480	{
1583	retval->distance_x += op1->x - best->x;	1481	retval->distance_x += op1->x - best->x;
1584	retval->distance_y += op1->y - best->y;	1482	retval->distance_y += op1->y - best->y;
1585	}	1483	}
1586	}	1484	}
		1485
1587	retval->part = best;	1486	retval->part = best;
1588	retval->distance = isqrt (retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y);	1487	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1589	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1488	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);
1590	}	1489	}
1591	}	1490	}
1592		1491
1593	/* this is basically the same as get_rangevector above, but instead of	1492	/* this is basically the same as get_rangevector above, but instead of
…		…
1598	* flags has no meaning for this function at this time - I kept it in to	1497	* flags has no meaning for this function at this time - I kept it in to
1599	* be more consistant with the above function and also in case they are needed	1498	* be more consistant with the above function and also in case they are needed
1600	* for something in the future. Also, since no object is pasted, the best	1499	* for something in the future. Also, since no object is pasted, the best
1601	* field of the rv_vector is set to NULL.	1500	* field of the rv_vector is set to NULL.
1602	*/	1501	*/
1603
1604	void	1502	void
1605	get_rangevector_from_mapcoord (const maptile *m, int x, int y, const object *op2, rv_vector * retval, int flags)	1503	get_rangevector_from_mapcoord (const maptile *m, int x, int y, const object *op2, rv_vector *retval, int flags)
1606	{	1504	{
1607	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))	1505	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))
1608	{	1506	{
1609	/* be conservative and fill in _some_ data */	1507	/* be conservative and fill in _some_ data */
1610	retval->distance = 100000;	1508	retval->distance = 100000;
…		…
1616	else	1514	else
1617	{	1515	{
1618	retval->distance_x += op2->x - x;	1516	retval->distance_x += op2->x - x;
1619	retval->distance_y += op2->y - y;	1517	retval->distance_y += op2->y - y;
1620		1518
1621	retval->part = NULL;	1519	retval->part = 0;
1622	retval->distance = isqrt (retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y);	1520	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1623	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1521	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);
1624	}	1522	}
1625	}	1523	}
1626		1524
1627	/* Returns true of op1 and op2 are effectively on the same map	1525	/* Returns true of op1 and op2 are effectively on the same map
…		…
1638	int dx, dy;	1536	int dx, dy;
1639		1537
1640	return adjacent_map (op1->map, op2->map, &dx, &dy);	1538	return adjacent_map (op1->map, op2->map, &dx, &dy);
1641	}	1539	}
1642		1540
		1541	//-GPL
		1542
1643	object *	1543	object *
1644	maptile::insert (object *op, int x, int y, object *originator, int flags)	1544	maptile::insert (object *op, int x, int y, object *originator, int flags)
1645	{	1545	{
1646	if (!op->flag [FLAG_REMOVED])
1647	op->remove ();
1648
1649	return insert_ob_in_map_at (op, this, originator, flags, x, y);	1546	return insert_ob_in_map_at (op, this, originator, flags, x, y);
1650	}	1547	}
1651		1548
		1549	region *
		1550	maptile::region (int x, int y) const
		1551	{
		1552	if (regions
		1553	&& regionmap
		1554	&& !OUT_OF_REAL_MAP (this, x, y))
		1555	if (struct region *reg = regionmap [regions [y * width + x]])
		1556	return reg;
		1557
		1558	if (default_region)
		1559	return default_region;
		1560
		1561	return ::region::default_region ();
		1562	}
		1563
		1564	//+GPL
		1565
		1566	/* picks a random object from a style map.
		1567	*/
		1568	object *
		1569	maptile::pick_random_object (rand_gen &gen) const
		1570	{
		1571	/* while returning a null object will result in a crash, that
		1572	* is actually preferable to an infinite loop. That is because
		1573	* most servers will automatically restart in case of crash.
		1574	* Change the logic on getting the random space - shouldn't make
		1575	* any difference, but this seems clearer to me.
		1576	*/
		1577	for (int i = 1000; --i;)
		1578	{
		1579	object *pick = at (gen (width), gen (height)).bot;
		1580
		1581	// do not prefer big monsters just because they are big.
		1582	if (pick && pick->is_head ())
		1583	return pick->head_ ();
		1584	}
		1585
		1586	// instead of crashing in the unlikely(?) case, try to return *something*
		1587	return archetype::find (shstr_bug);
		1588	}
		1589
		1590	//-GPL
		1591
		1592	void
		1593	maptile::play_sound (faceidx sound, int x, int y) const
		1594	{
		1595	if (!sound)
		1596	return;
		1597
		1598	for_all_players_on_map (pl, this)
		1599	if (client *ns = pl->ns)
		1600	{
		1601	int dx = x - pl->ob->x;
		1602	int dy = y - pl->ob->y;
		1603
		1604	int distance = idistance (dx, dy);
		1605
		1606	if (distance <= MAX_SOUND_DISTANCE)
		1607	ns->play_sound (sound, dx, dy);
		1608	}
		1609	}
		1610
		1611	void
		1612	maptile::say_msg (const char *msg, int x, int y) const
		1613	{
		1614	for_all_players (pl)
		1615	if (client *ns = pl->ns)
		1616	{
		1617	int dx = x - pl->ob->x;
		1618	int dy = y - pl->ob->y;
		1619
		1620	int distance = idistance (dx, dy);
		1621
		1622	if (distance <= MAX_SOUND_DISTANCE)
		1623	ns->send_msg (NDI_GREY | NDI_DEF, SAY_CHANNEL, msg);
		1624	}
		1625	}
		1626
		1627	static void
		1628	split_to_tiles (dynbuf &buf, maptile *m, int x0, int y0, int x1, int y1, int dx, int dy)
		1629	{
		1630	// clip to map to the left
		1631	if (x0 < 0)
		1632	{
		1633	if (maptile *tile = m->tile_available (TILE_LEFT, 1))
		1634	split_to_tiles (buf, tile, x0 + tile->width, y0, min (x1 + tile->width, tile->width), y1, dx - tile->width, dy);
		1635
		1636	if (x1 < 0) // entirely to the left
		1637	return;
		1638
		1639	x0 = 0;
		1640	}
		1641
		1642	// clip to map to the right
		1643	if (x1 > m->width)
		1644	{
		1645	if (maptile *tile = m->tile_available (TILE_RIGHT, 1))
		1646	split_to_tiles (buf, tile, max (x0 - m->width, 0), y0, x1 - m->width, y1, dx + m->width, dy);
		1647
		1648	if (x0 > m->width) // entirely to the right
		1649	return;
		1650
		1651	x1 = m->width;
		1652	}
		1653
		1654	// clip to map above
		1655	if (y0 < 0)
		1656	{
		1657	if (maptile *tile = m->tile_available (TILE_UP, 1))
		1658	split_to_tiles (buf, tile, x0, y0 + tile->height, x1, min (y1 + tile->height, tile->height), dx, dy - tile->height);
		1659
		1660	if (y1 < 0) // entirely above
		1661	return;
		1662
		1663	y0 = 0;
		1664	}
		1665
		1666	// clip to map below
		1667	if (y1 > m->height)
		1668	{
		1669	if (maptile *tile = m->tile_available (TILE_DOWN, 1))
		1670	split_to_tiles (buf, tile, x0, max (y0 - m->height, 0), x1, y1 - m->height, dx, dy + m->height);
		1671
		1672	if (y0 > m->height) // entirely below
		1673	return;
		1674
		1675	y1 = m->height;
		1676	}
		1677
		1678	// if we get here, the rect is within the current map
		1679	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1680
		1681	r->m = m;
		1682	r->x0 = x0;
		1683	r->y0 = y0;
		1684	r->x1 = x1;
		1685	r->y1 = y1;
		1686	r->dx = dx;
		1687	r->dy = dy;
		1688	}
		1689
		1690	maprect *
		1691	maptile::split_to_tiles (int x0, int y0, int x1, int y1)
		1692	{
		1693	static dynbuf buf (sizeof (maprect) * 8, sizeof (maprect) * 8);
		1694	buf.clear ();
		1695
		1696	::split_to_tiles (buf, this, x0, y0, x1, y1, 0, 0);
		1697
		1698	// add end marker
		1699	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1700	r->m = 0;
		1701
		1702	return (maprect *)buf.linearise ();
		1703	}
		1704

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