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Comparing deliantra/server/common/map.C (file contents):
Revision 1.121 by root, Sat Aug 25 22:19:26 2007 UTC vs.
Revision 1.204 by root, Wed May 4 07:36:40 2011 UTC

1	/*	1	/*
2	* This file is part of Crossfire TRT, the Roguelike Realtime MORPG.	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*	3	*
4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team	4	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (©) 2001-2003,2007 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001-2003 Mark Wedel & Crossfire Development Team
6	* Copyright (©) 1992,2007 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
7	*	7	*
8	* Crossfire TRT 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 3 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, see <http://www.gnu.org/licenses/>.	19	* and the GNU General Public License along with this program. If not, see
		20	* <http://www.gnu.org/licenses/>.
20	*	21	*
21	* The authors can be reached via e-mail to <crossfire@schmorp.de>	22	* The authors can be reached via e-mail to <support@deliantra.net>
22	*/	23	*/
23		24
24	#include <unistd.h>	25	#include <unistd.h>
25		26
26	#include "global.h"	27	#include "global.h"
27	#include "funcpoint.h"
28
29	#include "loader.h"
30
31	#include "path.h"	28	#include "path.h"
		29
		30	//+GPL
		31
		32	sint8 maptile::outdoor_darkness;
32		33
33	/* This rolls up wall, blocks_magic, blocks_view, etc, all into	34	/* This rolls up wall, blocks_magic, blocks_view, etc, all into
34	* one function that just returns a P_.. value (see map.h)	35	* one function that just returns a P_.. value (see map.h)
35	* it will also do map translation for tiled maps, returning	36	* it will also do map translation for tiled maps, returning
36	* 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
…		…
71	* by the caller.	72	* by the caller.
72	*/	73	*/
73	int	74	int
74	blocked_link (object *ob, maptile *m, int sx, int sy)	75	blocked_link (object *ob, maptile *m, int sx, int sy)
75	{	76	{
76	object *tmp;
77	int mflags, blocked;
78
79	/* 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
80	* have already checked this.	78	* have already checked this.
81	*/	79	*/
82	if (OUT_OF_REAL_MAP (m, sx, sy))	80	if (OUT_OF_REAL_MAP (m, sx, sy))
83	{	81	{
84	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");
85	return 1;	83	return 1;
86	}	84	}
87		85
88	/* Save some cycles - instead of calling get_map_flags(), just get the value	86	mapspace &ms = m->at (sx, sy);
89	* directly.
90	*/
91	mflags = m->at (sx, sy).flags ();
92		87
93	blocked = GET_MAP_MOVE_BLOCK (m, sx, sy);	88	int mflags = ms.flags ();
		89	int blocked = ms.move_block;
94		90
95	/* If space is currently not blocked by anything, no need to	91	/* If space is currently not blocked by anything, no need to
96	* go further. Not true for players - all sorts of special	92	* go further. Not true for players - all sorts of special
97	* things we need to do for players.	93	* things we need to do for players.
98	*/	94	*/
99	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && (blocked == 0))	95	if (ob->type != PLAYER && !(mflags & P_IS_ALIVE) && blocked == 0)
100	return 0;	96	return 0;
101		97
102	/* 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
103	* 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
104	* 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
105	* or another. Likewise, only if something is blocking us do we	101	* or another. Likewise, only if something is blocking us do we
106	* need to investigate if there is a special circumstance that would	102	* need to investigate if there is a special circumstance that would
107	* let the player through (inventory checkers for example)	103	* let the player through (inventory checkers for example)
…		…
114	/* 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
115	* 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
116	* true. If we get through the entire stack, that must mean	112	* true. If we get through the entire stack, that must mean
117	* ob is blocking it, so return 0.	113	* ob is blocking it, so return 0.
118	*/	114	*/
119	for (tmp = GET_MAP_OB (m, sx, sy); tmp; tmp = tmp->above)	115	for (object *tmp = ms.top; tmp; tmp = tmp->below)
120	{	116	{
121		117	if (OB_MOVE_BLOCK (ob, tmp))
122	/* This must be before the checks below. Code for inventory checkers. */
123	if (tmp->type == CHECK_INV && OB_MOVE_BLOCK (ob, tmp))
124	{	118	{
125	/* If last_sp is set, the player/monster needs an object,	119	if (INVOKE_OBJECT (BLOCKED_MOVE, tmp, ob))
126	* so we check for it. If they don't have it, they can't	120	if (RESULT_INT (0))
127	* pass through this space.	121	return 1;
128	*/	122	else
129	if (tmp->last_sp)	123	continue;
		124
		125	if (tmp->type == CHECK_INV)
130	{	126	{
131	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))
132	return 1;	131	return 1;
133	else	132	}
134	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;
135	}	142	}
136	else	143	else
137	{	144	return 1; // unconditional block
138	/* In this case, the player must not have the object -	145
139	* if they do, they can't pass through.
140	*/
141	if (check_inv_recursive (ob, tmp) != NULL) /* player has object */
142	return 1;
143	else
144	continue;
145	}
146	} /* if check_inv */
147	else	146	} else {
148	{	147	// space does not block the ob, directly, but
149	/* Broke apart a big nasty if into several here to make	148	// anything alive that is not a door still
150	* this more readable. first check - if the space blocks	149	// blocks anything
151	* movement, can't move here.
152	* second - if a monster, can't move there, unless it is a
153	* hidden dm
154	*/
155	if (OB_MOVE_BLOCK (ob, tmp))
156	return 1;
157		150
158	if (tmp->flag [FLAG_ALIVE]	151	if (tmp->flag [FLAG_ALIVE]
159	&& tmp->head_ () != ob
160	&& tmp != ob
161	&& tmp->type != DOOR	152	&& tmp->type != DOOR
162	&& !(tmp->flag [FLAG_WIZ] && tmp->contr->hidden))	153	&& tmp->head_ () != ob) //TODO: maybe move these check up?
163	return 1;	154	return 1;
164	}	155	}
165
166	}	156	}
		157
167	return 0;	158	return 0;
168	}	159	}
169		160
170	/*	161	/*
171	* 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
172	* This is meant for multi space objects - for single space objecs,	163	* spot. This is meant for multi space objects - for single space objecs,
173	* just calling get_map_blocked and checking that against movement type	164	* just calling get_map_blocked and checking that against movement type
174	* of object. This function goes through all the parts of the	165	* of object. This function goes through all the parts of the multipart
175	* multipart object and makes sure they can be inserted.	166	* object and makes sure they can be inserted.
176	*	167	*
177	* 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.
178	*	169	*
179	* This function has been used to deprecate arch_out_of_map -	170	* This function has been used to deprecate arch_out_of_map -
180	* this function also does that check, and since in most cases,	171	* this function also does that check, and since in most cases,
…		…
191	*	182	*
192	* Note this used to be arch_blocked, but with new movement	183	* Note this used to be arch_blocked, but with new movement
193	* 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
194	* against the move_block values.	185	* against the move_block values.
195	*/	186	*/
196	int	187	bool
197	ob_blocked (const object *ob, maptile *m, sint16 x, sint16 y)	188	object::blocked (maptile *m, int x, int y) const
198	{	189	{
199	archetype *tmp;	190	for (archetype *tmp = arch; tmp; tmp = (archetype *)tmp->more)
200	int flag;
201	maptile *m1;
202	sint16 sx, sy;
203
204	if (!ob)
205	{
206	flag = get_map_flags (m, &m1, x, y, &sx, &sy);
207	if (flag & P_OUT_OF_MAP)
208	return P_OUT_OF_MAP;
209
210	/* don't have object, so don't know what types would block */
211	return m1->at (sx, sy).move_block;
212	}	191	{
		192	mapxy pos (m, x + tmp->x, y + tmp->y);
213		193
214	for (tmp = ob->arch; tmp; tmp = (archetype *)tmp->more)	194	if (!pos.normalise ())
215	{	195	return 1;
216	flag = get_map_flags (m, &m1, x + tmp->x, y + tmp->y, &sx, &sy);
217		196
218	if (flag & P_OUT_OF_MAP)	197	mapspace &ms = *pos;
219	return P_OUT_OF_MAP;	198
220	if (flag & P_IS_ALIVE)	199	if (ms.flags () & P_IS_ALIVE)
221	return P_IS_ALIVE;	200	return 1;
222		201
223	mapspace &ms = m1->at (sx, sy);	202	/* However, often ob doesn't have any move type
224		203	* (signifying non-moving objects)
225	/* find_first_free_spot() calls this function. However, often
226	* ob doesn't have any move type (when used to place exits)
227	* 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.
228	*/	205	*/
229
230	if (ob->move_type == 0 && ms.move_block != MOVE_ALL)	206	if (!move_type && ms.move_block != MOVE_ALL)
231	continue;	207	continue;
232		208
233	/* 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
234	* head of the object should correspond for the entire object.	210	* head of the object should correspond for the entire object.
235	*/	211	*/
236	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))	212	if (ms.blocks (move_type))
237	return P_NO_PASS;	213	return 1;
238	}	214	}
239		215
240	return 0;	216	return 0;
241	}	217	}
242		218
243	/* When the map is loaded, load_object does not actually insert objects	219	//-GPL
244	* into inventory, but just links them. What this does is go through
245	* and insert them properly.
246	* The object 'container' is the object that contains the inventory.
247	* This is needed so that we can update the containers weight.
248	*/
249	void
250	fix_container (object *container)
251	{
252	object *tmp = container->inv, *next;
253
254	container->inv = 0;
255	while (tmp)
256	{
257	next = tmp->below;
258	if (tmp->inv)
259	fix_container (tmp);
260
261	insert_ob_in_ob (tmp, container);
262	tmp = next;
263	}
264
265	/* sum_weight will go through and calculate what all the containers are
266	* carrying.
267	*/
268	sum_weight (container);
269	}
270		220
271	void	221	void
272	maptile::set_object_flag (int flag, int value)	222	maptile::set_object_flag (int flag, int value)
273	{	223	{
274	if (!spaces)	224	if (!spaces)
…		…
276		226
277	for (mapspace *ms = spaces + size (); ms-- > spaces; )	227	for (mapspace *ms = spaces + size (); ms-- > spaces; )
278	for (object *tmp = ms->bot; tmp; tmp = tmp->above)	228	for (object *tmp = ms->bot; tmp; tmp = tmp->above)
279	tmp->flag [flag] = value;	229	tmp->flag [flag] = value;
280	}	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
281		259
282	/* 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
283	* 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
284	* 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
285	* they are saved).	263	* they are saved).
…		…
313	op = op->above;	291	op = op->above;
314	}	292	}
315	}	293	}
316	}	294	}
317		295
		296	//-GPL
		297
318	/*	298	/*
319	* 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
320	* file pointer.	300	* file pointer.
321	*/	301	*/
322	bool	302	bool
323	maptile::_load_objects (object_thawer &f)	303	maptile::_load_objects (object_thawer &f)
324	{	304	{
325	for (;;)	305	for (;;)
326	{	306	{
327	coroapi::cede_to_tick_every (100); // cede once in a while	307	coroapi::cede_to_tick (); // cede once in a while
328		308
329	switch (f.kw)	309	switch (f.kw)
330	{	310	{
331	case KW_arch:	311	case KW_arch:
332	if (object *op = object::read (f, this))	312	if (object *op = object::read (f, this))
333	{	313	{
		314	// TODO: why?
334	if (op->inv)	315	if (op->inv)
		316	{
		317	op->carrying = 0;
335	sum_weight (op);	318	op->update_weight ();
		319	}
336		320
337	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	}
338	}	344	}
339		345
340	continue;	346	continue;
341		347
342	case KW_EOF:	348	case KW_EOF:
…		…
355	}	361	}
356		362
357	void	363	void
358	maptile::activate ()	364	maptile::activate ()
359	{	365	{
360	if (spaces)	366	if (in_memory != MAP_INACTIVE)
		367	return;
		368
361	for (mapspace *ms = spaces + size (); ms-- > spaces; )	369	for (mapspace *ms = spaces + size (); ms-- > spaces; )
362	for (object *op = ms->bot; op; op = op->above)	370	for (object *op = ms->bot; op; op = op->above)
363	op->activate_recursive ();	371	op->activate_recursive ();
		372
		373	in_memory = MAP_ACTIVE;
364	}	374	}
365		375
366	void	376	void
367	maptile::deactivate ()	377	maptile::deactivate ()
368	{	378	{
369	if (spaces)	379	if (in_memory != MAP_ACTIVE)
		380	return;
		381
370	for (mapspace *ms = spaces + size (); ms-- > spaces; )	382	for (mapspace *ms = spaces + size (); ms-- > spaces; )
371	for (object *op = ms->bot; op; op = op->above)	383	for (object *op = ms->bot; op; op = op->above)
372	op->deactivate_recursive ();	384	op->deactivate_recursive ();
		385
		386	in_memory = MAP_INACTIVE;
373	}	387	}
374		388
375	bool	389	bool
376	maptile::_save_objects (object_freezer &f, int flags)	390	maptile::_save_objects (object_freezer &f, int flags)
377	{	391	{
…		…
408		422
409	return true;	423	return true;
410	}	424	}
411		425
412	bool	426	bool
413	maptile::_load_objects (const char *path, bool skip_header)
414	{
415	object_thawer f (path);
416
417	if (!f)
418	return false;
419
420	f.next ();
421
422	if (skip_header)
423	for (;;)
424	{
425	keyword kw = f.kw;
426	f.skip ();
427	if (kw == KW_end)
428	break;
429	}
430
431	return _load_objects (f);
432	}
433
434	bool
435	maptile::_save_objects (const char *path, int flags)	427	maptile::_save_objects (const char *path, int flags)
436	{	428	{
437	object_freezer freezer;	429	object_freezer freezer;
438		430
439	if (!_save_objects (freezer, flags))	431	if (!_save_objects (freezer, flags))
440	return false;	432	return false;
441		433
442	return freezer.save (path);	434	return freezer.save (path);
443	}	435	}
444		436
445	maptile::maptile ()	437	void
		438	maptile::init ()
446	{	439	{
447	in_memory = MAP_SWAPPED;	440	in_memory = MAP_SWAPPED;
448		441
449	/* The maps used to pick up default x and y values from the	442	/* The maps used to pick up default x and y values from the
450	* map archetype. Mimic that behaviour.	443	* map archetype. Mimic that behaviour.
451	*/	444	*/
452	width = 16;	445	width = 16;
453	height = 16;	446	height = 16;
454	timeout = 300;	447	timeout = 300;
455	max_nrof = 1000; // 1000 items of anything	448	max_items = MAX_ITEM_PER_ACTION;
456	max_volume = 2000000; // 2m³	449	max_volume = 2000000; // 2m³
457	}
458
459	maptile::maptile (int w, int h)
460	{
461	in_memory = MAP_SWAPPED;
462
463	width = w;
464	height = h;
465	reset_timeout = 0;	450	reset_timeout = 0;
466	timeout = 300;
467	enter_x = 0;	451	enter_x = 0;
468	enter_y = 0;	452	enter_y = 0;
		453	}
		454
		455	maptile::maptile ()
		456	{
		457	init ();
		458	}
		459
		460	maptile::maptile (int w, int h)
		461	{
		462	init ();
		463
		464	width = w;
		465	height = h;
469		466
470	alloc ();	467	alloc ();
471	}	468	}
472		469
473	/*	470	/*
…		…
481	if (spaces)	478	if (spaces)
482	return;	479	return;
483		480
484	spaces = salloc0<mapspace> (size ());	481	spaces = salloc0<mapspace> (size ());
485	}	482	}
		483
		484	//+GPL
486		485
487	/* Takes a string from a map definition and outputs a pointer to the array of shopitems	486	/* Takes a string from a map definition and outputs a pointer to the array of shopitems
488	* corresponding to that string. Memory is allocated for this, it must be freed	487	* corresponding to that string. Memory is allocated for this, it must be freed
489	* at a later date.	488	* at a later date.
490	* Called by parse_map_headers below.	489	* Called by parse_map_headers below.
…		…
567	return items;	566	return items;
568	}	567	}
569		568
570	/* opposite of parse string, this puts the string that was originally fed in to	569	/* opposite of parse string, this puts the string that was originally fed in to
571	* the map (or something equivilent) into output_string. */	570	* the map (or something equivilent) into output_string. */
572	static void	571	static const char *
573	print_shop_string (maptile *m, char *output_string)	572	print_shop_string (maptile *m)
574	{	573	{
575	int i;	574	static dynbuf_text buf; buf.clear ();
576	char tmp[MAX_BUF];	575	bool first = true;
577		576
578	strcpy (output_string, "");
579	for (i = 0; i < m->shopitems[0].index; i++)	577	for (int i = 0; i < m->shopitems[0].index; i++)
580	{	578	{
		579	if (!first)
		580	buf << ';';
		581
		582	first = false;
		583
581	if (m->shopitems[i].typenum)	584	if (m->shopitems[i].typenum)
582	{	585	{
583	if (m->shopitems[i].strength)	586	if (m->shopitems[i].strength)
584	sprintf (tmp, "%s:%d;", m->shopitems[i].name, m->shopitems[i].strength);	587	buf.printf ("%s:%d", m->shopitems[i].name, m->shopitems[i].strength);
585	else	588	else
586	sprintf (tmp, "%s;", m->shopitems[i].name);	589	buf.printf ("%s", m->shopitems[i].name);
587	}	590	}
588	else	591	else
589	{	592	{
590	if (m->shopitems[i].strength)	593	if (m->shopitems[i].strength)
591	sprintf (tmp, "*:%d;", m->shopitems[i].strength);	594	buf.printf ("*:%d", m->shopitems[i].strength);
592	else	595	else
593	sprintf (tmp, "*");	596	buf.printf ("*");
594	}	597	}
595
596	strcat (output_string, tmp);
597	}	598	}
		599
		600	return buf;
598	}	601	}
		602
		603	//-GPL
599		604
600	/* This loads the header information of the map. The header	605	/* This loads the header information of the map. The header
601	* contains things like difficulty, size, timeout, etc.	606	* contains things like difficulty, size, timeout, etc.
602	* this used to be stored in the map object, but with the	607	* this used to be stored in the map object, but with the
603	* addition of tiling, fields beyond that easily named in an	608	* addition of tiling, fields beyond that easily named in an
…		…
611	bool	616	bool
612	maptile::_load_header (object_thawer &thawer)	617	maptile::_load_header (object_thawer &thawer)
613	{	618	{
614	for (;;)	619	for (;;)
615	{	620	{
616	thawer.next ();
617
618	switch (thawer.kw)	621	switch (thawer.kw)
619	{	622	{
620	case KW_msg:	623	case KW_msg:
621	thawer.get_ml (KW_endmsg, msg);	624	thawer.get_ml (KW_endmsg, msg);
622	break;	625	break;
623		626
624	case KW_lore: // CF+ extension	627	case KW_lore: // deliantra extension
625	thawer.get_ml (KW_endlore, maplore);	628	thawer.get_ml (KW_endlore, maplore);
626	break;	629	break;
627		630
628	case KW_maplore:	631	case KW_maplore:
629	thawer.get_ml (KW_endmaplore, maplore);	632	thawer.get_ml (KW_endmaplore, maplore);
…		…
646	case KW_shopgreed: thawer.get (shopgreed); break;	649	case KW_shopgreed: thawer.get (shopgreed); break;
647	case KW_shopmin: thawer.get (shopmin); break;	650	case KW_shopmin: thawer.get (shopmin); break;
648	case KW_shopmax: thawer.get (shopmax); break;	651	case KW_shopmax: thawer.get (shopmax); break;
649	case KW_shoprace: thawer.get (shoprace); break;	652	case KW_shoprace: thawer.get (shoprace); break;
650	case KW_outdoor: thawer.get (outdoor); break;	653	case KW_outdoor: thawer.get (outdoor); break;
651	case KW_temp: thawer.get (temp); break;
652	case KW_pressure: thawer.get (pressure); break;
653	case KW_humid: thawer.get (humid); break;
654	case KW_windspeed: thawer.get (windspeed); break;
655	case KW_winddir: thawer.get (winddir); break;
656	case KW_sky: thawer.get (sky); break;
657		654
658	case KW_per_player: thawer.get (per_player); break;	655	case KW_per_player: thawer.get (per_player); break;
659	case KW_per_party: thawer.get (per_party); break;	656	case KW_per_party: thawer.get (per_party); break;
660	case KW_no_reset: thawer.get (no_reset); break;	657	case KW_no_reset: thawer.get (no_reset); break;
		658	case KW_no_drop: thawer.get (no_drop); break;
661		659
662	case KW_region: default_region = region::find (thawer.get_str ()); break;	660	case KW_region: thawer.get (default_region); break;
663	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;	661	case KW_shopitems: shopitems = parse_shop_string (thawer.get_str ()); break;
664		662
665	// old names new names	663	// old names new names
666	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;	664	case KW_hp: case KW_enter_x: thawer.get (enter_x); break;
667	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;	665	case KW_sp: case KW_enter_y: thawer.get (enter_y); break;
…		…
675		673
676	case KW_tile_path_1: thawer.get (tile_path [0]); break;	674	case KW_tile_path_1: thawer.get (tile_path [0]); break;
677	case KW_tile_path_2: thawer.get (tile_path [1]); break;	675	case KW_tile_path_2: thawer.get (tile_path [1]); break;
678	case KW_tile_path_3: thawer.get (tile_path [2]); break;	676	case KW_tile_path_3: thawer.get (tile_path [2]); break;
679	case KW_tile_path_4: thawer.get (tile_path [3]); break;	677	case KW_tile_path_4: thawer.get (tile_path [3]); break;
		678	case KW_tile_path_5: thawer.get (tile_path [4]); break;
		679	case KW_tile_path_6: thawer.get (tile_path [5]); break;
680		680
681	case KW_ERROR:	681	case KW_ERROR:
682	set_key (thawer.kw_str, thawer.value);	682	set_key_text (thawer.kw_str, thawer.value);
683	break;	683	break;
684		684
685	case KW_end:	685	case KW_end:
		686	thawer.next ();
686	return true;	687	return true;
687		688
688	default:	689	default:
689	if (!thawer.parse_error ("map", 0))	690	if (!thawer.parse_error ("map"))
690	return false;	691	return false;
691	break;	692	break;
692	}	693	}
		694
		695	thawer.next ();
693	}	696	}
694		697
695	abort ();	698	abort ();
696	}	699	}
697		700
698	bool	701	//+GPL
699	maptile::_load_header (const char *path)
700	{
701	object_thawer thawer (path);
702
703	if (!thawer)
704	return false;
705
706	return _load_header (thawer);
707	}
708		702
709	/******************************************************************************	703	/******************************************************************************
710	* This is the start of unique map handling code	704	* This is the start of unique map handling code
711	*****************************************************************************/	705	*****************************************************************************/
712		706
…		…
719	int unique = 0;	713	int unique = 0;
720	for (object *op = spaces [i].bot; op; )	714	for (object *op = spaces [i].bot; op; )
721	{	715	{
722	object *above = op->above;	716	object *above = op->above;
723		717
724	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))	718	if (op->flag [FLAG_IS_FLOOR] && op->flag [FLAG_UNIQUE])
725	unique = 1;	719	unique = 1;
726		720
727	if (op->head_ () == op && (QUERY_FLAG (op, FLAG_UNIQUE) || unique))	721	if (op->head_ () == op && (op->flag [FLAG_UNIQUE] || unique))
728	{
729	op->destroy_inv (false);
730	op->destroy ();	722	op->destroy ();
731	}
732		723
733	op = above;	724	op = above;
734	}	725	}
735	}	726	}
736	}	727	}
737		728
		729	//-GPL
		730
738	bool	731	bool
739	maptile::_save_header (object_freezer &freezer)	732	maptile::_save_header (object_freezer &freezer)
740	{	733	{
741	#define MAP_OUT(k) freezer.put (KW_ ## k, k)	734	#define MAP_OUT(k) freezer.put (KW(k), k)
742	#define MAP_OUT2(k,v) freezer.put (KW_ ## k, v)	735	#define MAP_OUT2(k,v) freezer.put (KW(k), v)
743		736
744	MAP_OUT2 (arch, "map");	737	MAP_OUT2 (arch, CS(map));
745		738
746	if (name) MAP_OUT (name);	739	if (name) MAP_OUT (name);
747	MAP_OUT (swap_time);	740	MAP_OUT (swap_time);
748	MAP_OUT (reset_time);	741	MAP_OUT (reset_time);
749	MAP_OUT (reset_timeout);	742	MAP_OUT (reset_timeout);
750	MAP_OUT (fixed_resettime);	743	MAP_OUT (fixed_resettime);
751	MAP_OUT (no_reset);	744	MAP_OUT (no_reset);
		745	MAP_OUT (no_drop);
752	MAP_OUT (difficulty);	746	MAP_OUT (difficulty);
753
754	if (default_region) MAP_OUT2 (region, default_region->name);	747	if (default_region) MAP_OUT2 (region, default_region->name);
755		748
756	if (shopitems)	749	if (shopitems) MAP_OUT2 (shopitems, print_shop_string (this));
757	{
758	char shop[MAX_BUF];
759	print_shop_string (this, shop);
760	MAP_OUT2 (shopitems, shop);
761	}
762
763	MAP_OUT (shopgreed);	750	MAP_OUT (shopgreed);
764	MAP_OUT (shopmin);	751	MAP_OUT (shopmin);
765	MAP_OUT (shopmax);	752	MAP_OUT (shopmax);
766	if (shoprace) MAP_OUT (shoprace);	753	if (shoprace) MAP_OUT (shoprace);
767	MAP_OUT (darkness);	754
768	MAP_OUT (width);	755	MAP_OUT (width);
769	MAP_OUT (height);	756	MAP_OUT (height);
770	MAP_OUT (enter_x);	757	MAP_OUT (enter_x);
771	MAP_OUT (enter_y);	758	MAP_OUT (enter_y);
772		759	MAP_OUT (darkness);
773	if (msg) freezer.put (KW_msg , KW_endmsg , msg);
774	if (maplore) freezer.put (KW_maplore, KW_endmaplore, maplore);
775
776	MAP_OUT (outdoor);	760	MAP_OUT (outdoor);
777	MAP_OUT (temp);	761
778	MAP_OUT (pressure);	762	if (msg) freezer.put (KW(msg) , KW(endmsg) , msg);
779	MAP_OUT (humid);	763	if (maplore) freezer.put (KW(maplore), KW(endmaplore), maplore);
780	MAP_OUT (windspeed);
781	MAP_OUT (winddir);
782	MAP_OUT (sky);
783		764
784	MAP_OUT (per_player);	765	MAP_OUT (per_player);
785	MAP_OUT (per_party);	766	MAP_OUT (per_party);
786		767
787	if (tile_path [0]) MAP_OUT2 (tile_path_1, tile_path [0]);	768	if (tile_path [0]) MAP_OUT2 (tile_path_1, tile_path [0]);
788	if (tile_path [1]) MAP_OUT2 (tile_path_2, tile_path [1]);	769	if (tile_path [1]) MAP_OUT2 (tile_path_2, tile_path [1]);
789	if (tile_path [2]) MAP_OUT2 (tile_path_3, tile_path [2]);	770	if (tile_path [2]) MAP_OUT2 (tile_path_3, tile_path [2]);
790	if (tile_path [3]) MAP_OUT2 (tile_path_4, tile_path [3]);	771	if (tile_path [3]) MAP_OUT2 (tile_path_4, tile_path [3]);
		772	if (tile_path [4]) MAP_OUT2 (tile_path_5, tile_path [4]);
		773	if (tile_path [5]) MAP_OUT2 (tile_path_6, tile_path [5]);
791		774
792	freezer.put (this);	775	freezer.put (this);
793	freezer.put (KW_end);	776	freezer.put (KW(end));
794		777
795	return true;	778	return true;
796	}	779	}
797		780
798	bool	781	bool
…		…
804	return false;	787	return false;
805		788
806	return freezer.save (path);	789	return freezer.save (path);
807	}	790	}
808		791
		792	//+GPL
		793
809	/*	794	/*
810	* Remove and free all objects in the given map.	795	* Remove and free all objects in the given map.
811	*/	796	*/
812	void	797	void
813	maptile::clear ()	798	maptile::clear ()
814	{	799	{
815	sfree (regions, size ()); regions = 0;
816	delete [] regionmap; regionmap = 0;
817
818	if (spaces)	800	if (spaces)
819	{	801	{
820	for (mapspace *ms = spaces + size (); ms-- > spaces; )	802	for (mapspace *ms = spaces + size (); ms-- > spaces; )
821	while (object *op = ms->bot)	803	while (object *op = ms->bot)
822	{	804	{
		805	// manually remove, as to not trigger anything
		806	if (ms->bot = op->above)
		807	ms->bot->below = 0;
		808
		809	op->flag [FLAG_REMOVED] = true;
		810
823	op = op->head_ ();	811	object *head = op->head_ ();
824	op->destroy_inv (false);	812	if (op == head)
825	op->destroy ();	813	op->destroy ();
		814	else if (head->map != op->map)
		815	{
		816	LOG (llevDebug, "bad luck for object crossing map borders: %s", head->debug_desc ());
		817	head->destroy ();
		818	}
826	}	819	}
827		820
828	sfree (spaces, size ()), spaces = 0;	821	sfree0 (spaces, size ());
829	}	822	}
830		823
831	if (buttons)	824	if (buttons)
832	free_objectlinkpt (buttons), buttons = 0;	825	free_objectlinkpt (buttons), buttons = 0;
		826
		827	sfree0 (regions, size ());
		828	delete [] regionmap; regionmap = 0;
833	}	829	}
834		830
835	void	831	void
836	maptile::clear_header ()	832	maptile::clear_header ()
837	{	833	{
…		…
839	msg = 0;	835	msg = 0;
840	maplore = 0;	836	maplore = 0;
841	shoprace = 0;	837	shoprace = 0;
842	delete [] shopitems, shopitems = 0;	838	delete [] shopitems, shopitems = 0;
843		839
844	for (int i = 0; i < 4; i++)	840	for (int i = 0; i < TILE_NUM; i++)
845	tile_path [i] = 0;	841	tile_path [i] = 0;
846	}	842	}
847		843
848	maptile::~maptile ()	844	maptile::~maptile ()
849	{	845	{
…		…
870		866
871	clear ();	867	clear ();
872	}	868	}
873		869
874	/* decay and destroy perishable items in a map */	870	/* decay and destroy perishable items in a map */
		871	// TODO: should be done regularly, not on map load?
875	void	872	void
876	maptile::do_decay_objects ()	873	maptile::do_decay_objects ()
877	{	874	{
878	if (!spaces)	875	if (!spaces)
879	return;	876	return;
…		…
881	for (mapspace *ms = spaces + size (); ms-- > spaces; )	878	for (mapspace *ms = spaces + size (); ms-- > spaces; )
882	for (object *above, *op = ms->bot; op; op = above)	879	for (object *above, *op = ms->bot; op; op = above)
883	{	880	{
884	above = op->above;	881	above = op->above;
885		882
		883	// do not decay anything above unique floor tiles (yet :)
		884	if (op->flag [FLAG_IS_FLOOR] && op->flag [FLAG_UNIQUE])
		885	break;
		886
886	bool destroy = 0;	887	bool destroy = 0;
887		888
888	// do not decay anything above unique floor tiles (yet :)	889	if (op->flag [FLAG_IS_FLOOR]
889	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))	890	|| op->flag [FLAG_OBJ_ORIGINAL]
890	break;	891	|| op->flag [FLAG_UNIQUE]
891		892	|| op->flag [FLAG_OVERLAY_FLOOR]
892	if (QUERY_FLAG (op, FLAG_IS_FLOOR)	893	|| op->flag [FLAG_UNPAID]
893	|| QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
894	|| QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
895	|| QUERY_FLAG (op, FLAG_UNIQUE)
896	|| QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
897	|| QUERY_FLAG (op, FLAG_UNPAID)
898	|| op->is_alive ())	894	|| op->is_alive ())
899	; // do not decay	895	; // do not decay
900	else if (op->is_weapon ())	896	else if (op->is_weapon ())
901	{	897	{
902	op->stats.dam--;	898	op->stats.dam--;
…		…
927	|| mat & M_LIQUID	923	|| mat & M_LIQUID
928	|| (mat & M_IRON && rndm (1, 5) == 1)	924	|| (mat & M_IRON && rndm (1, 5) == 1)
929	|| (mat & M_GLASS && rndm (1, 2) == 1)	925	|| (mat & M_GLASS && rndm (1, 2) == 1)
930	|| ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)	926	|| ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
931	|| ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)	927	|| ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
932	|| (mat & M_ICE && temp > 32))	928	//|| (mat & M_ICE && temp > 32)
		929	)
933	destroy = 1;	930	destroy = 1;
934	}	931	}
935		932
936	/* adjust overall chance below */	933	/* adjust overall chance below */
937	if (destroy && rndm (0, 1))	934	if (destroy && rndm (0, 1))
938	op->destroy ();	935	op->destroy ();
939	}
940	}
941
942	/*
943	* Updates every button on the map (by calling update_button() for them).
944	*/
945	void
946	maptile::update_buttons ()
947	{
948	for (oblinkpt *obp = buttons; obp; obp = obp->next)
949	for (objectlink *ol = obp->link; ol; ol = ol->next)
950	{
951	if (!ol->ob)
952	{
953	LOG (llevError, "Internal error in update_button (%s (%dx%d), connected %ld).\n",
954	ol->ob ? (const char *) ol->ob->name : "null", ol->ob ? ol->ob->x : -1, ol->ob ? ol->ob->y : -1, obp->value);
955	continue;
956	}
957
958	if (ol->ob->type == BUTTON || ol->ob->type == PEDESTAL)
959	{
960	update_button (ol->ob);
961	break;
962	}
963	}	936	}
964	}	937	}
965		938
966	/*	939	/*
967	* This routine is supposed to find out the difficulty of the map.	940	* This routine is supposed to find out the difficulty of the map.
968	* difficulty does not have a lot to do with character level,	941	* difficulty does not have a lot to do with character level,
969	* but does have a lot to do with treasure on the map.	942	* but does have a lot to do with treasure on the map.
970	*	943	*
971	* Difficulty can now be set by the map creature. If the value stored	944	* Difficulty can now be set by the map creator. If the value stored
972	* in the map is zero, then use this routine. Maps should really	945	* in the map is zero, then use this routine. Maps should really
973	* have a difficulty set than using this function - human calculation	946	* have a difficulty set rather than using this function - human calculation
974	* is much better than this functions guesswork.	947	* is much better than this function's guesswork.
975	*/	948	*/
976	int	949	int
977	maptile::estimate_difficulty () const	950	maptile::estimate_difficulty () const
978	{	951	{
979	long monster_cnt = 0;	952	long monster_cnt = 0;
…		…
981	sint64 total_exp = 0;	954	sint64 total_exp = 0;
982		955
983	for (mapspace *ms = spaces + size (); ms-- > spaces; )	956	for (mapspace *ms = spaces + size (); ms-- > spaces; )
984	for (object *op = ms->bot; op; op = op->above)	957	for (object *op = ms->bot; op; op = op->above)
985	{	958	{
986	if (QUERY_FLAG (op, FLAG_MONSTER))	959	if (op->flag [FLAG_MONSTER])
987	{	960	{
988	total_exp += op->stats.exp;	961	total_exp += op->stats.exp;
989	monster_cnt++;	962	monster_cnt++;
990	}	963	}
991		964
992	if (QUERY_FLAG (op, FLAG_GENERATOR))	965	if (op->flag [FLAG_GENERATOR])
993	{	966	{
994	total_exp += op->stats.exp;	967	total_exp += op->stats.exp;
995		968
996	if (archetype *at = type_to_archetype (GENERATE_TYPE (op)))	969	if (archetype *at = op->other_arch)
		970	{
997	total_exp += at->stats.exp * 8;	971	total_exp += at->stats.exp * 8;
998
999	monster_cnt++;	972	monster_cnt++;
		973	}
		974
		975	for (object *inv = op->inv; inv; inv = inv->below)
		976	{
		977	total_exp += op->stats.exp * 8;
		978	monster_cnt++;
		979	}
1000	}	980	}
1001	}	981	}
1002		982
1003	avgexp = (double) total_exp / monster_cnt;	983	avgexp = (double) total_exp / monster_cnt;
1004		984
…		…
1017	* postive values make it darker, negative make it brighter	997	* postive values make it darker, negative make it brighter
1018	*/	998	*/
1019	int	999	int
1020	maptile::change_map_light (int change)	1000	maptile::change_map_light (int change)
1021	{	1001	{
1022	int new_level = darkness + change;
1023
1024	/* Nothing to do */	1002	/* Nothing to do */
1025	if (!change || (new_level <= 0 && darkness == 0) || (new_level >= MAX_DARKNESS && darkness >= MAX_DARKNESS))	1003	if (!change)
1026	return 0;	1004	return 0;
1027		1005
1028	/* inform all players on the map */	1006	/* inform all players on the map */
1029	if (change > 0)	1007	if (change > 0)
1030	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");	1008	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes darker.");
1031	else	1009	else
1032	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");	1010	new_info_map (NDI_BLACK | NDI_UNIQUE, this, "It becomes brighter.");
1033		1011
1034	/* Do extra checking. since darkness is a unsigned value,	1012	darkness = clamp (darkness + change, -MAX_DARKNESS, MAX_DARKNESS);
1035	* we need to be extra careful about negative values.
1036	* In general, the checks below are only needed if change
1037	* is not +/-1
1038	*/
1039	if (new_level < 0)
1040	darkness = 0;
1041	else if (new_level >= MAX_DARKNESS)
1042	darkness = MAX_DARKNESS;
1043	else
1044	darkness = new_level;
1045		1013
1046	/* All clients need to get re-updated for the change */	1014	/* All clients need to get re-updated for the change */
1047	update_all_map_los (this);	1015	update_all_map_los (this);
		1016
1048	return 1;	1017	return 1;
1049	}	1018	}
1050		1019
1051	/*	1020	/*
1052	* This function updates various attributes about a specific space	1021	* This function updates various attributes about a specific space
…		…
1055	* through, etc)	1024	* through, etc)
1056	*/	1025	*/
1057	void	1026	void
1058	mapspace::update_ ()	1027	mapspace::update_ ()
1059	{	1028	{
1060	object *tmp, *last = 0;	1029	object *last = 0;
1061	uint8 flags = P_UPTODATE, light = 0, anywhere = 0;	1030	uint8 flags = P_UPTODATE;
		1031	sint8 light = 0;
1062	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;	1032	MoveType move_block = 0, move_slow = 0, move_on = 0, move_off = 0, move_allow = 0;
		1033	uint64_t volume = 0;
		1034	uint32_t items = 0;
		1035	object *anywhere = 0;
		1036	uint8_t middle_visibility = 0;
1063		1037
1064	//object *middle = 0;	1038	//object *middle = 0;
1065	//object *top = 0;	1039	//object *top = 0;
1066	//object *floor = 0;	1040	//object *floor = 0;
1067	// this seems to generate better code than using locals, above	1041	// this seems to generate better code than using locals, above
1068	object *&top = faces_obj[0] = 0;	1042	object *&top = faces_obj[0] = 0;
1069	object *&middle = faces_obj[1] = 0;	1043	object *&middle = faces_obj[1] = 0;
1070	object *&floor = faces_obj[2] = 0;	1044	object *&floor = faces_obj[2] = 0;
1071		1045
		1046	object::flags_t allflags; // all flags of all objects or'ed together
		1047
1072	for (tmp = bot; tmp; last = tmp, tmp = tmp->above)	1048	for (object *tmp = bot; tmp; last = tmp, tmp = tmp->above)
1073	{	1049	{
1074	/* This could be made additive I guess (two lights better than	1050	// Lights are additive, up to MAX_LIGHT_RADIUS, see los.C)
1075	* one). But if so, it shouldn't be a simple additive - 2
1076	* light bulbs do not illuminate twice as far as once since
1077	* it is a dissapation factor that is cubed.
1078	*/
1079	if (tmp->glow_radius > light)
1080	light = tmp->glow_radius;	1051	light += tmp->glow_radius;
1081		1052
1082	/* This call is needed in order to update objects the player	1053	/* This call is needed in order to update objects the player
1083	* is standing in that have animations (ie, grass, fire, etc).	1054	* is standing in that have animations (ie, grass, fire, etc).
1084	* However, it also causes the look window to be re-drawn	1055	* However, it also causes the look window to be re-drawn
1085	* 3 times each time the player moves, because many of the	1056	* 3 times each time the player moves, because many of the
1086	* functions the move_player calls eventualy call this.	1057	* functions the move_player calls eventualy call this.
1087	*	1058	*
1088	* Always put the player down for drawing.	1059	* Always put the player down for drawing.
1089	*/	1060	*/
1090	if (!tmp->invisible)	1061	if (expect_true (!tmp->invisible))
1091	{	1062	{
1092	if ((tmp->type == PLAYER || QUERY_FLAG (tmp, FLAG_MONSTER)))	1063	if (expect_false (tmp->type == PLAYER || tmp->flag [FLAG_MONSTER]))
1093	top = tmp;	1064	top = tmp;
1094	else if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1065	else if (expect_false (tmp->flag [FLAG_IS_FLOOR]))
1095	{	1066	{
1096	/* If we got a floor, that means middle and top were below it,	1067	/* If we got a floor, that means middle and top were below it,
1097	* so should not be visible, so we clear them.	1068	* so should not be visible, so we clear them.
1098	*/	1069	*/
1099	middle = 0;	1070	middle = 0;
1100	top = 0;	1071	top = 0;
1101	floor = tmp;	1072	floor = tmp;
		1073	volume = 0;
		1074	items = 0;
1102	}	1075	}
1103	/* Flag anywhere have high priority */	1076	else
1104	else if (QUERY_FLAG (tmp, FLAG_SEE_ANYWHERE))
1105	{	1077	{
		1078	if (expect_true (!tmp->flag [FLAG_NO_PICK]))
		1079	{
		1080	++items;
		1081	volume += tmp->volume ();
		1082	}
		1083
		1084	/* Flag anywhere have high priority */
		1085	if (expect_false (tmp->flag [FLAG_SEE_ANYWHERE]))
		1086	anywhere = tmp;
		1087
		1088	/* Find the highest visible face around. If equal
		1089	* visibilities, we still want the one nearer to the
		1090	* top
		1091	*/
		1092	if (expect_false (::faces [tmp->face].visibility >= middle_visibility))
		1093	{
		1094	middle_visibility = ::faces [tmp->face].visibility;
1106	middle = tmp;	1095	middle = tmp;
1107	anywhere = 1;	1096	}
1108	}	1097	}
1109	/* Find the highest visible face around. If equal
1110	* visibilities, we still want the one nearer to the
1111	* top
1112	*/
1113	else if (!middle || (::faces [tmp->face].visibility > ::faces [middle->face].visibility && !anywhere))
1114	middle = tmp;
1115	}
1116
1117	if (tmp == tmp->above)
1118	{
1119	LOG (llevError, "Error in structure of map\n");
1120	exit (-1);
1121	}	1098	}
1122		1099
1123	move_slow |= tmp->move_slow;	1100	move_slow |= tmp->move_slow;
1124	move_block |= tmp->move_block;	1101	move_block |= tmp->move_block;
1125	move_on |= tmp->move_on;	1102	move_on |= tmp->move_on;
1126	move_off |= tmp->move_off;	1103	move_off |= tmp->move_off;
1127	move_allow |= tmp->move_allow;	1104	move_allow |= tmp->move_allow;
1128		1105
1129	if (QUERY_FLAG (tmp, FLAG_BLOCKSVIEW)) flags |= P_BLOCKSVIEW;	1106	allflags |= tmp->flag;
1130	if (QUERY_FLAG (tmp, FLAG_NO_MAGIC)) flags |= P_NO_MAGIC;	1107
1131	if (tmp->type == PLAYER) flags |= P_PLAYER;	1108	if (tmp->type == PLAYER) flags |= P_PLAYER;
1132	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;	1109	if (tmp->type == SAFE_GROUND) flags |= P_SAFE;
1133	if (QUERY_FLAG (tmp, FLAG_ALIVE)) flags |= P_IS_ALIVE;
1134	if (QUERY_FLAG (tmp, FLAG_DAMNED)) flags |= P_NO_CLERIC;
1135	}	1110	}
1136		1111
1137	this->light = light;	1112	// FLAG_SEE_ANYWHERE takes precedence
		1113	if (anywhere)
		1114	middle = anywhere;
		1115
		1116	// ORing all flags together and checking them here is much faster
		1117	if (allflags [FLAG_BLOCKSVIEW]) flags |= P_BLOCKSVIEW;
		1118	if (allflags [FLAG_NO_MAGIC] ) flags |= P_NO_MAGIC;
		1119	if (allflags [FLAG_ALIVE] ) flags |= P_IS_ALIVE;
		1120	if (allflags [FLAG_DAMNED] ) flags |= P_NO_CLERIC;
		1121
		1122	this->light = min (light, MAX_LIGHT_RADIUS);
1138	this->flags_ = flags;	1123	this->flags_ = flags;
1139	this->move_block = move_block & ~move_allow;	1124	this->move_block = move_block & ~move_allow;
1140	this->move_on = move_on;	1125	this->move_on = move_on;
1141	this->move_off = move_off;	1126	this->move_off = move_off;
1142	this->move_slow = move_slow;	1127	this->move_slow = move_slow;
		1128	this->volume_ = (volume + 1023) / 1024;
		1129	this->items_ = upos_min (items, 65535); // assume nrof <= 2**31
1143		1130
1144	/* At this point, we have a floor face (if there is a floor),	1131	/* At this point, we have a floor face (if there is a floor),
1145	* and the floor is set - we are not going to touch it at	1132	* and the floor is set - we are not going to touch it at
1146	* this point.	1133	* this point.
1147	* middle contains the highest visibility face.	1134	* middle contains the highest visibility face.
…		…
1162	* 1) top face is set, need middle to be set.	1149	* 1) top face is set, need middle to be set.
1163	* 2) middle is set, need to set top.	1150	* 2) middle is set, need to set top.
1164	* 3) neither middle or top is set - need to set both.	1151	* 3) neither middle or top is set - need to set both.
1165	*/	1152	*/
1166		1153
1167	for (tmp = last; tmp; tmp = tmp->below)	1154	for (object *tmp = last; tmp; tmp = tmp->below)
1168	{	1155	{
1169	/* Once we get to a floor, stop, since we already have a floor object */	1156	/* Once we get to a floor, stop, since we already have a floor object */
1170	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1157	if (tmp->flag [FLAG_IS_FLOOR])
1171	break;	1158	break;
1172		1159
1173	/* If two top faces are already set, quit processing */	1160	/* If two top faces are already set, quit processing */
1174	if (top && middle)	1161	if (top && middle)
1175	break;	1162	break;
…		…
1213	faces_obj [1] = middle;	1200	faces_obj [1] = middle;
1214	faces_obj [2] = floor;	1201	faces_obj [2] = floor;
1215	#endif	1202	#endif
1216	}	1203	}
1217		1204
1218	uint64	1205	maptile *
1219	mapspace::volume () const
1220	{
1221	uint64 vol = 0;
1222
1223	for (object *op = top; op && !op->flag [FLAG_NO_PICK]; op = op->below)
1224	vol += op->volume ();
1225
1226	return vol;
1227	}
1228
1229	bool
1230	maptile::tile_available (int dir, bool load)	1206	maptile::tile_available (int dir, bool load)
1231	{	1207	{
1232	if (!tile_path[dir])	1208	if (tile_path[dir])
1233	return 0;	1209	{
1234		1210	// map is there and we don't need to load it OR it's loaded => return what we have
1235	if (tile_map[dir] && (!load || tile_map[dir]->in_memory == MAP_IN_MEMORY))	1211	if (tile_map[dir] && (!load || tile_map[dir]->linkable ()))
1236	return 1;	1212	return tile_map[dir];
1237		1213
		1214	// well, try to locate it then, if possible - maybe it's there already
1238	if ((tile_map[dir] = find_async (tile_path[dir], this, load)))	1215	if ((tile_map[dir] = find_async (tile_path[dir], this, load)))
1239	return 1;	1216	return tile_map[dir];
		1217	}
1240		1218
1241	return 0;	1219	return 0;
1242	}	1220	}
1243		1221
1244	/* this returns TRUE if the coordinates (x,y) are out of	1222	/* this returns TRUE if the coordinates (x,y) are out of
…		…
1353	/**	1331	/**
1354	* Return whether map2 is adjacent to map1. If so, store the distance from	1332	* Return whether map2 is adjacent to map1. If so, store the distance from
1355	* map1 to map2 in dx/dy.	1333	* map1 to map2 in dx/dy.
1356	*/	1334	*/
1357	int	1335	int
1358	adjacent_map (const maptile *map1, const maptile *map2, int *dx, int *dy)	1336	adjacent_map (maptile *map1, maptile *map2, int *dx, int *dy)
1359	{	1337	{
1360	if (!map1 || !map2)	1338	if (!map1 || !map2)
1361	return 0;	1339	return 0;
1362		1340
1363	//TODO: this doesn't actually check correctly when intermediate maps are not loaded	1341	//TODO: this doesn't actually check correctly when intermediate maps are not loaded
…		…
1365	if (map1 == map2)	1343	if (map1 == map2)
1366	{	1344	{
1367	*dx = 0;	1345	*dx = 0;
1368	*dy = 0;	1346	*dy = 0;
1369	}	1347	}
1370	else if (map1->tile_map[0] == map2)	1348	else if (map1->tile_available (TILE_NORTH, false) == map2)
1371	{ /* up */	1349	{
1372	*dx = 0;	1350	*dx = 0;
1373	*dy = -map2->height;	1351	*dy = -map2->height;
1374	}	1352	}
1375	else if (map1->tile_map[1] == map2)	1353	else if (map1->tile_available (TILE_EAST , false) == map2)
1376	{ /* right */	1354	{
1377	*dx = map1->width;	1355	*dx = map1->width;
1378	*dy = 0;	1356	*dy = 0;
1379	}	1357	}
1380	else if (map1->tile_map[2] == map2)	1358	else if (map1->tile_available (TILE_SOUTH, false) == map2)
1381	{ /* down */	1359	{
1382	*dx = 0;	1360	*dx = 0;
1383	*dy = map1->height;	1361	*dy = map1->height;
1384	}	1362	}
1385	else if (map1->tile_map[3] == map2)	1363	else if (map1->tile_available (TILE_WEST , false) == map2)
1386	{ /* left */	1364	{
1387	*dx = -map2->width;	1365	*dx = -map2->width;
1388	*dy = 0;	1366	*dy = 0;
1389	}	1367	}
1390	else if (map1->tile_map[0] && map1->tile_map[0]->tile_map[1] == map2)	1368	else if (map1->tile_map[TILE_NORTH] && map1->tile_map[TILE_NORTH]->tile_available (TILE_EAST , false) == map2)
1391	{ /* up right */	1369	{ /* up right */
1392	*dx = map1->tile_map[0]->width;	1370	*dx = +map1->tile_map[TILE_NORTH]->width;
1393	*dy = -map1->tile_map[0]->height;	1371	*dy = -map1->tile_map[TILE_NORTH]->height;
1394	}	1372	}
1395	else if (map1->tile_map[0] && map1->tile_map[0]->tile_map[3] == map2)	1373	else if (map1->tile_map[TILE_NORTH] && map1->tile_map[TILE_NORTH]->tile_available (TILE_WEST , false) == map2)
1396	{ /* up left */	1374	{ /* up left */
1397	*dx = -map2->width;	1375	*dx = -map2->width;
1398	*dy = -map1->tile_map[0]->height;	1376	*dy = -map1->tile_map[TILE_NORTH]->height;
1399	}	1377	}
1400	else if (map1->tile_map[1] && map1->tile_map[1]->tile_map[0] == map2)	1378	else if (map1->tile_map[TILE_EAST ] && map1->tile_map[TILE_EAST ]->tile_available (TILE_NORTH, false) == map2)
1401	{ /* right up */	1379	{ /* right up */
1402	*dx = map1->width;	1380	*dx = +map1->width;
1403	*dy = -map2->height;	1381	*dy = -map2->height;
1404	}	1382	}
1405	else if (map1->tile_map[1] && map1->tile_map[1]->tile_map[2] == map2)	1383	else if (map1->tile_map[TILE_EAST ] && map1->tile_map[TILE_EAST ]->tile_available (TILE_SOUTH, false) == map2)
1406	{ /* right down */	1384	{ /* right down */
1407	*dx = map1->width;	1385	*dx = +map1->width;
1408	*dy = map1->tile_map[1]->height;	1386	*dy = +map1->tile_map[TILE_EAST]->height;
1409	}	1387	}
1410	else if (map1->tile_map[2] && map1->tile_map[2]->tile_map[1] == map2)	1388	else if (map1->tile_map[TILE_SOUTH] && map1->tile_map[TILE_SOUTH]->tile_available (TILE_EAST , false) == map2)
1411	{ /* down right */	1389	{ /* down right */
1412	*dx = map1->tile_map[2]->width;	1390	*dx = +map1->tile_map[TILE_SOUTH]->width;
1413	*dy = map1->height;	1391	*dy = +map1->height;
1414	}	1392	}
1415	else if (map1->tile_map[2] && map1->tile_map[2]->tile_map[3] == map2)	1393	else if (map1->tile_map[TILE_SOUTH] && map1->tile_map[TILE_SOUTH]->tile_available (TILE_WEST , false) == map2)
1416	{ /* down left */	1394	{ /* down left */
1417	*dx = -map2->width;	1395	*dx = -map2->width;
1418	*dy = map1->height;	1396	*dy = +map1->height;
1419	}	1397	}
1420	else if (map1->tile_map[3] && map1->tile_map[3]->tile_map[0] == map2)	1398	else if (map1->tile_map[TILE_WEST ] && map1->tile_map[TILE_WEST ]->tile_available (TILE_NORTH, false) == map2)
1421	{ /* left up */	1399	{ /* left up */
1422	*dx = -map1->tile_map[3]->width;	1400	*dx = -map1->tile_map[TILE_WEST]->width;
1423	*dy = -map2->height;	1401	*dy = -map2->height;
1424	}	1402	}
1425	else if (map1->tile_map[3] && map1->tile_map[3]->tile_map[2] == map2)	1403	else if (map1->tile_map[TILE_WEST ] && map1->tile_map[TILE_WEST ]->tile_available (TILE_SOUTH, false) == map2)
1426	{ /* left down */	1404	{ /* left down */
1427	*dx = -map1->tile_map[3]->width;	1405	*dx = -map1->tile_map[TILE_WEST]->width;
1428	*dy = map1->tile_map[3]->height;	1406	*dy = +map1->tile_map[TILE_WEST]->height;
1429	}	1407	}
1430	else	1408	else
1431	return 0;	1409	return 0;
1432		1410
1433	return 1;	1411	return 1;
…		…
1469	*	1447	*
1470	* currently, the only flag supported (0x1) is don't translate for	1448	* currently, the only flag supported (0x1) is don't translate for
1471	* closest body part of 'op1'	1449	* closest body part of 'op1'
1472	*/	1450	*/
1473	void	1451	void
1474	get_rangevector (object *op1, object *op2, rv_vector * retval, int flags)	1452	get_rangevector (object *op1, object *op2, rv_vector *retval, int flags)
1475	{	1453	{
1476	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))	1454	if (!adjacent_map (op1->map, op2->map, &retval->distance_x, &retval->distance_y))
1477	{	1455	{
1478	/* be conservative and fill in _some_ data */	1456	/* be conservative and fill in _some_ data */
1479	retval->distance = 10000;	1457	retval->distance = 10000;
1480	retval->distance_x = 10000;	1458	retval->distance_x = 10000;
1481	retval->distance_y = 10000;	1459	retval->distance_y = 10000;
1482	retval->direction = 0;	1460	retval->direction = 0;
1483	retval->part = 0;	1461	retval->part = 0;
1484	}	1462	}
1485	else	1463	else
1486	{	1464	{
1487	object *best;
1488
1489	retval->distance_x += op2->x - op1->x;	1465	retval->distance_x += op2->x - op1->x;
1490	retval->distance_y += op2->y - op1->y;	1466	retval->distance_y += op2->y - op1->y;
1491		1467
1492	best = op1;	1468	object *best = op1;
		1469
1493	/* If this is multipart, find the closest part now */	1470	/* If this is multipart, find the closest part now */
1494	if (!(flags & 0x1) && op1->more)	1471	if (!(flags & 1) && op1->more)
1495	{	1472	{
1496	int best_distance = retval->distance_x * retval->distance_x + retval->distance_y * retval->distance_y, tmpi;	1473	int best_distance = idistance (retval->distance_x, retval->distance_y);
1497		1474
1498	/* we just take the offset of the piece to head to figure	1475	/* we just take the offset of the piece to head to figure
1499	* distance instead of doing all that work above again	1476	* distance instead of doing all that work above again
1500	* since the distance fields we set above are positive in the	1477	* since the distance fields we set above are positive in the
1501	* same axis as is used for multipart objects, the simply arithmetic	1478	* same axis as is used for multipart objects, the simply arithmetic
1502	* below works.	1479	* below works.
1503	*/	1480	*/
1504	for (object *tmp = op1->more; tmp; tmp = tmp->more)	1481	for (object *tmp = op1->more; tmp; tmp = tmp->more)
1505	{	1482	{
1506	tmpi = (op1->x - tmp->x + retval->distance_x) * (op1->x - tmp->x + retval->distance_x) +	1483	int tmpi = idistance (op1->x - tmp->x + retval->distance_x, op1->y - tmp->y + retval->distance_y);
1507	(op1->y - tmp->y + retval->distance_y) * (op1->y - tmp->y + retval->distance_y);	1484
1508	if (tmpi < best_distance)	1485	if (tmpi < best_distance)
1509	{	1486	{
1510	best_distance = tmpi;	1487	best_distance = tmpi;
1511	best = tmp;	1488	best = tmp;
1512	}	1489	}
1513	}	1490	}
1514		1491
1515	if (best != op1)	1492	if (best != op1)
1516	{	1493	{
1517	retval->distance_x += op1->x - best->x;	1494	retval->distance_x += op1->x - best->x;
1518	retval->distance_y += op1->y - best->y;	1495	retval->distance_y += op1->y - best->y;
1519	}	1496	}
1520	}	1497	}
1521		1498
1522	retval->part = best;	1499	retval->part = best;
1523	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));	1500	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1524	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1501	retval->direction = find_dir_2 (retval->distance_x, retval->distance_y);
1525	}	1502	}
1526	}	1503	}
1527		1504
1528	/* this is basically the same as get_rangevector above, but instead of	1505	/* this is basically the same as get_rangevector above, but instead of
1529	* the first parameter being an object, it instead is the map	1506	* the first parameter being an object, it instead is the map
…		…
1534	* be more consistant with the above function and also in case they are needed	1511	* be more consistant with the above function and also in case they are needed
1535	* for something in the future. Also, since no object is pasted, the best	1512	* for something in the future. Also, since no object is pasted, the best
1536	* field of the rv_vector is set to NULL.	1513	* field of the rv_vector is set to NULL.
1537	*/	1514	*/
1538	void	1515	void
1539	get_rangevector_from_mapcoord (const maptile *m, int x, int y, const object *op2, rv_vector *retval, int flags)	1516	get_rangevector_from_mapcoord (maptile *m, int x, int y, const object *op2, rv_vector *retval, int flags)
1540	{	1517	{
1541	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))	1518	if (!adjacent_map (m, op2->map, &retval->distance_x, &retval->distance_y))
1542	{	1519	{
1543	/* be conservative and fill in _some_ data */	1520	/* be conservative and fill in _some_ data */
1544	retval->distance = 100000;	1521	retval->distance = 100000;
1545	retval->distance_x = 32767;	1522	retval->distance_x = 32767;
1546	retval->distance_y = 32767;	1523	retval->distance_y = 32767;
1547	retval->direction = 0;	1524	retval->direction = 0;
1548	retval->part = 0;	1525	retval->part = 0;
1549	}	1526	}
1550	else	1527	else
1551	{	1528	{
1552	retval->distance_x += op2->x - x;	1529	retval->distance_x += op2->x - x;
1553	retval->distance_y += op2->y - y;	1530	retval->distance_y += op2->y - y;
1554		1531
1555	retval->part = NULL;	1532	retval->part = 0;
1556	retval->distance = idistance (retval->distance_x, retval->distance_y);	1533	retval->distance = upos_max (abs (retval->distance_x), abs (retval->distance_y));
1557	retval->direction = find_dir_2 (-retval->distance_x, -retval->distance_y);	1534	retval->direction = find_dir_2 (retval->distance_x, retval->distance_y);
1558	}	1535	}
1559	}	1536	}
1560		1537
1561	/* Returns true of op1 and op2 are effectively on the same map	1538	/* Returns true of op1 and op2 are effectively on the same map
1562	* (as related to map tiling). Note that this looks for a path from	1539	* (as related to map tiling). Note that this looks for a path from
…		…
1572	int dx, dy;	1549	int dx, dy;
1573		1550
1574	return adjacent_map (op1->map, op2->map, &dx, &dy);	1551	return adjacent_map (op1->map, op2->map, &dx, &dy);
1575	}	1552	}
1576		1553
		1554	//-GPL
		1555
1577	object *	1556	object *
1578	maptile::insert (object *op, int x, int y, object *originator, int flags)	1557	maptile::insert (object *op, int x, int y, object *originator, int flags)
1579	{	1558	{
1580	if (!op->flag [FLAG_REMOVED])
1581	op->remove ();
1582
1583	return insert_ob_in_map_at (op, this, originator, flags, x, y);	1559	return insert_ob_in_map_at (op, this, originator, flags, x, y);
1584	}	1560	}
1585		1561
1586	region *	1562	region *
1587	maptile::region (int x, int y) const	1563	maptile::region (int x, int y) const
…		…
1596	return default_region;	1572	return default_region;
1597		1573
1598	return ::region::default_region ();	1574	return ::region::default_region ();
1599	}	1575	}
1600		1576
		1577	//+GPL
		1578
1601	/* picks a random object from a style map.	1579	/* picks a random object from a style map.
1602	* Redone by MSW so it should be faster and not use static
1603	* variables to generate tables.
1604	*/	1580	*/
1605	object *	1581	object *
1606	maptile::pick_random_object () const	1582	maptile::pick_random_object (rand_gen &gen) const
1607	{	1583	{
1608	/* while returning a null object will result in a crash, that	1584	/* while returning a null object will result in a crash, that
1609	* is actually preferable to an infinite loop. That is because	1585	* is actually preferable to an infinite loop. That is because
1610	* most servers will automatically restart in case of crash.	1586	* most servers will automatically restart in case of crash.
1611	* Change the logic on getting the random space - shouldn't make	1587	* Change the logic on getting the random space - shouldn't make
1612	* any difference, but this seems clearer to me.	1588	* any difference, but this seems clearer to me.
1613	*/	1589	*/
1614	for (int i = 1000; --i;)	1590	for (int i = 1000; --i;)
1615	{	1591	{
1616	object *pick = at (rndm (width), rndm (height)).bot;	1592	object *pick = at (gen (width), gen (height)).bot;
1617		1593
1618	// do not prefer big monsters just because they are big.	1594	// must be head: do not prefer big monsters just because they are big.
1619	if (pick && pick->head_ () == pick)	1595	if (pick && pick->is_head ())
1620	return pick->head_ ();	1596	return pick;
1621	}	1597	}
1622		1598
1623	// instead of crashing in the unlikely(?) case, try to return *something*	1599	// instead of crashing in the unlikely(?) case, try to return *something*
1624	return get_archetype ("blocked");	1600	return archetype::find (shstr_bug);
1625	}	1601	}
		1602
		1603	//-GPL
1626		1604
1627	void	1605	void
1628	maptile::play_sound (faceidx sound, int x, int y) const	1606	maptile::play_sound (faceidx sound, int x, int y) const
1629	{	1607	{
1630	if (!sound)	1608	if (!sound)
1631	return;	1609	return;
1632		1610
		1611	for_all_players_on_map (pl, this)
		1612	if (client *ns = pl->ns)
		1613	{
		1614	int dx = x - pl->ob->x;
		1615	int dy = y - pl->ob->y;
		1616
		1617	int distance = idistance (dx, dy);
		1618
		1619	if (distance <= MAX_SOUND_DISTANCE)
		1620	ns->play_sound (sound, dx, dy);
		1621	}
		1622	}
		1623
		1624	void
		1625	maptile::say_msg (const char *msg, int x, int y) const
		1626	{
1633	for_all_players (pl)	1627	for_all_players (pl)
1634	if (pl->ob->map == this)
1635	if (client *ns = pl->ns)	1628	if (client *ns = pl->ns)
1636	{	1629	{
1637	int dx = x - pl->ob->x;	1630	int dx = x - pl->ob->x;
1638	int dy = y - pl->ob->y;	1631	int dy = y - pl->ob->y;
1639		1632
1640	int distance = idistance (dx, dy);	1633	int distance = idistance (dx, dy);
1641		1634
1642	if (distance <= MAX_SOUND_DISTANCE)	1635	if (distance <= MAX_SOUND_DISTANCE)
1643	ns->play_sound (sound, dx, dy);	1636	ns->send_msg (NDI_GREY | NDI_DEF, SAY_CHANNEL, msg);
1644	}	1637	}
1645	}	1638	}
1646		1639
		1640	dynbuf mapwalk_buf (sizeof (maprect) * 25, sizeof (maprect) * 25);
		1641
		1642	static void
		1643	split_to_tiles (dynbuf &buf, maptile *m, int x0, int y0, int x1, int y1, int dx, int dy)
		1644	{
		1645	// clip to map to the left
		1646	if (x0 < 0)
		1647	{
		1648	if (maptile *tile = m->tile_available (TILE_WEST, 1))
		1649	split_to_tiles (buf, tile, x0 + tile->width, y0, min (x1 + tile->width, tile->width), y1, dx - tile->width, dy);
		1650
		1651	if (x1 < 0) // entirely to the left
		1652	return;
		1653
		1654	x0 = 0;
		1655	}
		1656
		1657	// clip to map to the right
		1658	if (x1 > m->width)
		1659	{
		1660	if (maptile *tile = m->tile_available (TILE_EAST, 1))
		1661	split_to_tiles (buf, tile, max (x0 - m->width, 0), y0, x1 - m->width, y1, dx + m->width, dy);
		1662
		1663	if (x0 > m->width) // entirely to the right
		1664	return;
		1665
		1666	x1 = m->width;
		1667	}
		1668
		1669	// clip to map above
		1670	if (y0 < 0)
		1671	{
		1672	if (maptile *tile = m->tile_available (TILE_NORTH, 1))
		1673	split_to_tiles (buf, tile, x0, y0 + tile->height, x1, min (y1 + tile->height, tile->height), dx, dy - tile->height);
		1674
		1675	if (y1 < 0) // entirely above
		1676	return;
		1677
		1678	y0 = 0;
		1679	}
		1680
		1681	// clip to map below
		1682	if (y1 > m->height)
		1683	{
		1684	if (maptile *tile = m->tile_available (TILE_SOUTH, 1))
		1685	split_to_tiles (buf, tile, x0, max (y0 - m->height, 0), x1, y1 - m->height, dx, dy + m->height);
		1686
		1687	if (y0 > m->height) // entirely below
		1688	return;
		1689
		1690	y1 = m->height;
		1691	}
		1692
		1693	// if we get here, the rect is within the current map
		1694	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1695
		1696	r->m = m;
		1697	r->x0 = x0;
		1698	r->y0 = y0;
		1699	r->x1 = x1;
		1700	r->y1 = y1;
		1701	r->dx = dx;
		1702	r->dy = dy;
		1703	}
		1704
		1705	maprect *
		1706	maptile::split_to_tiles (dynbuf &buf, int x0, int y0, int x1, int y1)
		1707	{
		1708	buf.clear ();
		1709
		1710	::split_to_tiles (buf, this, x0, y0, x1, y1, 0, 0);
		1711
		1712	// add end marker
		1713	maprect *r = (maprect *)buf.alloc (sizeof (maprect));
		1714	r->m = 0;
		1715
		1716	return (maprect *)buf.linearise ();
		1717	}
		1718

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