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Comparing deliantra/server/common/object.C (file contents):
Revision 1.11 by root, Sun Sep 3 00:18:40 2006 UTC vs.
Revision 1.212 by root, Mon Apr 21 23:35:24 2008 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: object.C,v 1.11 2006/09/03 00:18:40 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify
13	it under the terms of the GNU General Public License as published by	9	* it under the terms of the GNU General Public License as published by
14	the Free Software Foundation; either version 2 of the License, or	10	* the Free Software Foundation, either version 3 of the License, or
15	(at your option) any later version.	11	* (at your option) any later version.
16		12	*
17	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,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	*
25		21	* The authors can be reached via e-mail to <support@deliantra.net>
26	The authors can be reached via e-mail at crossfire-devel@real-time.com
27	*/	22	*/
28		23
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	24	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	25	#include <stdio.h>
35	#include <sys/types.h>	26	#include <sys/types.h>
36	#include <sys/uio.h>	27	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	28	#include <object.h>
39	#include <funcpoint.h>	29	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>	30	#include <loader.h>
42	#ifdef MEMORY_DEBUG
43	int nroffreeobjects = 0;
44	int nrofallocobjects = 0;
45	#undef OBJ_EXPAND
46	#define OBJ_EXPAND 1
47	#else
48	object objarray[STARTMAX]; /* All objects, allocated this way at first */
49	int nroffreeobjects = STARTMAX; /* How many OBs allocated and free (free) */
50	int nrofallocobjects = STARTMAX; /* How many OBs allocated (free + used) */
51	#endif
52		31
53	object *objects; /* Pointer to the list of used objects */	32	#include <bitset>
54	object *free_objects; /* Pointer to the list of unused objects */
55	object *active_objects; /* List of active objects that need to be processed */
56		33
		34	UUID UUID::cur;
		35	static uint64_t seq_next_save;
		36	static const uint64 UUID_GAP = 1<<19;
		37
		38	objectvec objects;
		39	activevec actives;
		40
57	short freearr_x[SIZEOFFREE]=	41	short freearr_x[SIZEOFFREE] = {
58	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,	42	0,
		43	0, 1, 1, 1, 0, -1, -1, -1,
		44	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
59	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	45	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		46	};
60	short freearr_y[SIZEOFFREE]=	47	short freearr_y[SIZEOFFREE] = {
61	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	48	0,
		49	-1, -1, 0, 1, 1, 1, 0, -1,
		50	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
62	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	51	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
		52	};
63	int maxfree[SIZEOFFREE]=	53	int maxfree[SIZEOFFREE] = {
64	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	54	0,
		55	9, 10, 13, 14, 17, 18, 21, 22,
		56	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
65	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	57	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		58	};
66	int freedir[SIZEOFFREE]= {	59	int freedir[SIZEOFFREE] = {
67	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	60	0,
68	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	61	1, 2, 3, 4, 5, 6, 7, 8,
		62	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		63	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		64	};
69		65
		66	static void
		67	write_uuid (uval64 skip, bool sync)
		68	{
		69	CALL_BEGIN (2);
		70	CALL_ARG_SV (newSVval64 (skip));
		71	CALL_ARG_SV (boolSV (sync));
		72	CALL_CALL ("cf::write_uuid", G_DISCARD);
		73	CALL_END;
		74	}
		75
		76	static void
		77	read_uuid (void)
		78	{
		79	char filename[MAX_BUF];
		80
		81	sprintf (filename, "%s/uuid", settings.localdir);
		82
		83	seq_next_save = 0;
		84
		85	FILE *fp;
		86
		87	if (!(fp = fopen (filename, "r")))
		88	{
		89	if (errno == ENOENT)
		90	{
		91	LOG (llevInfo, "RESET uid to 1\n");
		92	UUID::cur.seq = 0;
		93	write_uuid (UUID_GAP, true);
		94	return;
		95	}
		96
		97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		98	_exit (1);
		99	}
		100
		101	UUID::BUF buf;
		102	buf[0] = 0;
		103	fgets (buf, sizeof (buf), fp);
		104
		105	if (!UUID::cur.parse (buf))
		106	{
		107	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		108	_exit (1);
		109	}
		110
		111	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		112
		113	write_uuid (UUID_GAP, true);
		114	fclose (fp);
		115	}
		116
		117	UUID
		118	UUID::gen ()
		119	{
		120	UUID uid;
		121
		122	uid.seq = ++cur.seq;
		123
		124	if (expect_false (cur.seq >= seq_next_save))
		125	{
		126	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		127	write_uuid (UUID_GAP, false);
		128	}
		129
		130
		131	return uid;
		132	}
		133
		134	void
		135	UUID::init ()
		136	{
		137	read_uuid ();
		138	}
70		139
71	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	140	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		141	static bool
72	static int compare_ob_value_lists_one(const object * wants, const object * has) {	142	compare_ob_value_lists_one (const object *wants, const object *has)
		143	{
73	key_value * wants_field;	144	key_value *wants_field;
74		145
75	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	146	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
76	* objects with lists are rare, and lists stay short. If not, use a	147	* objects with lists are rare, and lists stay short. If not, use a
77	* different structure or at least keep the lists sorted...	148	* different structure or at least keep the lists sorted...
78	*/	149	*/
79		150
80	/* For each field in wants, */	151	/* For each field in wants, */
81	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	152	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		153	{
82	key_value * has_field;	154	key_value *has_field;
83		155
84	/* Look for a field in has with the same key. */	156	/* Look for a field in has with the same key. */
85	has_field = get_ob_key_link(has, wants_field->key);	157	has_field = get_ob_key_link (has, wants_field->key);
86		158
87	if (has_field == NULL) {	159	if (!has_field)
88	/* No field with that name. */	160	return 0; /* No field with that name. */
89	return FALSE;	161
90	}
91
92	/* Found the matching field. */	162	/* Found the matching field. */
93	if (has_field->value != wants_field->value) {	163	if (has_field->value != wants_field->value)
94	/* Values don't match, so this half of the comparison is false. */	164	return 0; /* Values don't match, so this half of the comparison is false. */
95	return FALSE;	165
96	}
97
98	/* If we get here, we found a match. Now for the next field in wants. */	166	/* If we get here, we found a match. Now for the next field in wants. */
99	}
100		167	}
		168
101	/* If we get here, every field in wants has a matching field in has. */	169	/* If we get here, every field in wants has a matching field in has. */
102	return TRUE;	170	return 1;
103	}	171	}
104		172
105	/* Returns TRUE if ob1 has the same key_values as ob2. */	173	/* Returns TRUE if ob1 has the same key_values as ob2. */
		174	static bool
106	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	175	compare_ob_value_lists (const object *ob1, const object *ob2)
		176	{
107	/* However, there may be fields in has which aren't partnered in wants,	177	/* However, there may be fields in has which aren't partnered in wants,
108	* so we need to run the comparison *twice*. :(	178	* so we need to run the comparison *twice*. :(
109	*/	179	*/
110	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	180	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
111	}	181	}
112		182
113	/* Function examines the 2 objects given to it, and returns true if	183	/* Function examines the 2 objects given to it, and returns true if
114	* they can be merged together.	184	* they can be merged together.
115	*	185	*
116	* Note that this function appears a lot longer than the macro it	186	* Note that this function appears a lot longer than the macro it
117	* replaces - this is mostly for clarity - a decent compiler should hopefully	187	* replaces - this is mostly for clarity - a decent compiler should hopefully
118	* reduce this to the same efficiency.	188	* reduce this to the same efficiency.
119	*	189	*
120	* Check nrof variable *before* calling CAN_MERGE()	190	* Check nrof variable *before* calling can_merge()
121	*	191	*
122	* Improvements made with merge: Better checking on potion, and also	192	* Improvements made with merge: Better checking on potion, and also
123	* check weight	193	* check weight
124	*/	194	*/
125		195	bool object::can_merge_slow (object *ob1, object *ob2)
126	int CAN_MERGE(object *ob1, object *ob2) {	196	{
127
128	/* A couple quicksanity checks */	197	/* A couple quicksanity checks */
129	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	198	if (ob1 == ob2
		199	|| ob1->type != ob2->type
		200	|| ob1->speed != ob2->speed
		201	|| ob1->value != ob2->value
		202	|| ob1->name != ob2->name)
		203	return 0;
130		204
131	if (ob1->speed != ob2->speed) return 0;	205	/* Do not merge objects if nrof would overflow. First part checks
		206	* for unsigned overflow (2c), second part checks whether the result
		207	* would fit into a 32 bit signed int, which is often used to hold
		208	* nrof values.
		209	*/
		210	if (~ob1->nrof < ob2->nrof || ob1->nrof + ob2->nrof > (1UL << 31))
		211	return 0;
		212
		213	/* If the objects have been identified, set the BEEN_APPLIED flag.
		214	* This is to the comparison of the flags below will be OK. We
		215	* just can't ignore the been applied or identified flags, as they
		216	* are not equal - just if it has been identified, the been_applied
		217	* flags lose any meaning.
		218	*/
		219	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		220	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		221
		222	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		223	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		224
		225	if (ob1->arch->name != ob2->arch->name
		226	|| ob1->name != ob2->name
		227	|| ob1->title != ob2->title
		228	|| ob1->msg != ob2->msg
		229	|| ob1->weight != ob2->weight
		230	|| ob1->attacktype != ob2->attacktype
		231	|| ob1->magic != ob2->magic
		232	|| ob1->slaying != ob2->slaying
		233	|| ob1->skill != ob2->skill
		234	|| ob1->value != ob2->value
		235	|| ob1->animation_id != ob2->animation_id
		236	|| ob1->client_type != ob2->client_type
		237	|| ob1->materialname != ob2->materialname
		238	|| ob1->lore != ob2->lore
		239	|| ob1->subtype != ob2->subtype
		240	|| ob1->move_type != ob2->move_type
		241	|| ob1->move_block != ob2->move_block
		242	|| ob1->move_allow != ob2->move_allow
		243	|| ob1->move_on != ob2->move_on
		244	|| ob1->move_off != ob2->move_off
		245	|| ob1->move_slow != ob2->move_slow
		246	|| ob1->move_slow_penalty != ob2->move_slow_penalty
		247	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		248	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
		249	return 0;
		250
		251	if ((ob1->flag ^ ob2->flag)
		252	.reset (FLAG_INV_LOCKED)
		253	.reset (FLAG_CLIENT_SENT)
		254	.reset (FLAG_REMOVED)
		255	.any ())
		256	return 0;
		257
		258	/* This is really a spellbook check - we should in general
		259	* not merge objects with real inventories, as splitting them
		260	* is hard.
		261	*/
		262	if (ob1->inv || ob2->inv)
		263	{
		264	if (!(ob1->inv && ob2->inv))
		265	return 0; /* inventories differ in length */
		266
		267	if (ob1->inv->below || ob2->inv->below)
		268	return 0; /* more than one object in inv */
		269
		270	if (!object::can_merge (ob1->inv, ob2->inv))
		271	return 0; /* inventory objects differ */
		272
		273	/* inventory ok - still need to check rest of this object to see
		274	* if it is valid.
		275	*/
		276	}
		277
		278	/* Don't merge objects that are applied. With the new 'body' code,
		279	* it is possible for most any character to have more than one of
		280	* some items equipped, and we don't want those to merge.
		281	*/
		282	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		283	return 0;
		284
132	/* Note sure why the following is the case - either the object has to	285	/* Note sure why the following is the case - either the object has to
133	* be animated or have a very low speed. Is this an attempted monster	286	* be animated or have a very low speed. Is this an attempted monster
134	* check?	287	* check?
135	*/	288	*/
136	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	289	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
		290	return 0;
		291
		292	switch (ob1->type)
		293	{
		294	case SCROLL:
		295	if (ob1->level != ob2->level)
		296	return 0;
		297	break;
		298	}
		299
		300	if (ob1->key_values || ob2->key_values)
		301	{
		302	/* At least one of these has key_values. */
		303	if ((!ob1->key_values) != (!ob2->key_values))
		304	return 0; /* One has fields, but the other one doesn't. */
		305
		306	if (!compare_ob_value_lists (ob1, ob2))
137	return 0;	307	return 0;
		308	}
138		309
139	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	310	if (ob1->self || ob2->self)
140	* value could not be stored in a sint32 (which unfortunately sometimes is
141	* used to store nrof).
142	*/
143	if (ob1->nrof+ob2->nrof >= 1UL<<31)
144	return 0;
145
146	/* This is really a spellbook check - really, we should
147	* check all objects in the inventory.
148	*/
149	if (ob1->inv || ob2->inv) {
150	/* if one object has inventory but the other doesn't, not equiv */
151	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
152
153	/* Now check to see if the two inventory objects could merge */
154	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
155
156	/* inventory ok - still need to check rest of this object to see
157	* if it is valid.
158	*/
159	}	311	{
		312	ob1->optimise ();
		313	ob2->optimise ();
160		314
161	/* If the objects have been identified, set the BEEN_APPLIED flag.	315	if (ob1->self || ob2->self)
162	* This is to the comparison of the flags below will be OK. We
163	* just can't ignore the been applied or identified flags, as they
164	* are not equal - just if it has been identified, the been_applied
165	* flags lose any meaning.
166	*/
167	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
168	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
169
170	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
171	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
172
173
174	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
175	* being locked in inventory should prevent merging.
176	* 0x4 in flags3 is CLIENT_SENT
177	*/
178	if ((ob1->arch != ob2->arch) ||
179	(ob1->flags[0] != ob2->flags[0]) ||
180	(ob1->flags[1] != ob2->flags[1]) ||
181	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
182	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
183	(ob1->name != ob2->name) ||
184	(ob1->title != ob2->title) ||
185	(ob1->msg != ob2->msg) ||
186	(ob1->weight != ob2->weight) ||
187	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
188	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
189	(ob1->attacktype != ob2->attacktype) ||
190	(ob1->magic != ob2->magic) ||
191	(ob1->slaying != ob2->slaying) ||
192	(ob1->skill != ob2->skill) ||
193	(ob1->value != ob2->value) ||
194	(ob1->animation_id != ob2->animation_id) ||
195	(ob1->client_type != ob2->client_type) ||
196	(ob1->materialname != ob2->materialname) ||
197	(ob1->lore != ob2->lore) ||
198	(ob1->subtype != ob2->subtype) ||
199	(ob1->move_type != ob2->move_type) ||
200	(ob1->move_block != ob2->move_block) ||
201	(ob1->move_allow != ob2->move_allow) ||
202	(ob1->move_on != ob2->move_on) ||
203	(ob1->move_off != ob2->move_off) ||
204	(ob1->move_slow != ob2->move_slow) ||
205	(ob1->move_slow_penalty != ob2->move_slow_penalty)
206	)	316	{
		317	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		318	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		319
		320	if (k1 != k2)
207	return 0;	321	return 0;
208		322
209	/* Don't merge objects that are applied. With the new 'body' code,	323	if (k1 == 0)
210	* it is possible for most any character to have more than one of
211	* some items equipped, and we don't want those to merge.
212	*/
213	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))
214	return 0;	324	return 1;
215		325
216	switch (ob1->type) {	326	if (!cfperl_can_merge (ob1, ob2))
217	case SCROLL:
218	if (ob1->level != ob2->level) return 0;
219	break;
220
221	}
222	if (ob1->key_values != NULL || ob2->key_values != NULL) {
223	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {
225	/* One has fields, but the other one doesn't. */
226	return 0;	327	return 0;
227	} else if (!compare_ob_value_lists(ob1, ob2)) {
228	return 0;
229	}	328	}
230	}	329	}
231		330
232	/* Everything passes, must be OK. */	331	/* Everything passes, must be OK. */
233	return 1;	332	return 1;
234	}	333	}
235		334
		335	// adjust weight per container type ("of holding")
		336	static sint32
		337	weight_adjust (object *op, sint32 weight)
		338	{
		339	return op->type == CONTAINER
		340	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		341	: weight;
		342	}
		343
236	/*	344	/*
		345	* adjust_weight(object, weight) adds the specified weight to an object,
		346	* and also updates how much the environment(s) is/are carrying.
		347	*/
		348	static void
		349	adjust_weight (object *op, sint32 weight)
		350	{
		351	while (op)
		352	{
		353	weight = weight_adjust (op, weight);
		354
		355	if (!weight)
		356	return;
		357
		358	op->carrying += weight;
		359
		360	if (object *pl = op->visible_to ())
		361	esrv_update_item (UPD_WEIGHT, pl, op);
		362
		363	op = op->env;
		364	}
		365	}
		366
		367	/*
237	* sum_weight() is a recursive function which calculates the weight	368	* this is a recursive function which calculates the weight
238	* an object is carrying. It goes through in figures out how much	369	* an object is carrying. It goes through op and figures out how much
239	* containers are carrying, and sums it up.	370	* containers are carrying, and sums it up.
240	*/	371	*/
241	signed long sum_weight(object *op) {	372	void
242	signed long sum;	373	object::update_weight ()
243	object *inv;	374	{
244	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	375	sint32 sum = 0;
		376
		377	for (object *op = inv; op; op = op->below)
		378	{
245	if (inv->inv)	379	if (op->inv)
246	sum_weight(inv);	380	op->update_weight ();
247	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	381
		382	sum += op->total_weight ();
248	}	383	}
249	if (op->type == CONTAINER && op->stats.Str)	384
250	sum = (sum * (100 - op->stats.Str))/100;	385	sum = weight_adjust (this, sum);
251	if(op->carrying != sum)	386
		387	if (sum != carrying)
		388	{
252	op->carrying = sum;	389	carrying = sum;
253	return sum;
254	}
255		390
		391	if (object *pl = visible_to ())
		392	esrv_update_item (UPD_WEIGHT, pl, this);
		393	}
		394	}
		395
256	/**	396	/*
257	* Return the outermost environment object for a given object.	397	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
258	*/	398	*/
259		399	char *
260	object *object_get_env_recursive (object *op) {
261	while (op->env != NULL)
262	op = op->env;
263	return op;
264	}
265
266	/*
267	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
268	* a better check. We basically keeping traversing up until we can't
269	* or find a player.
270	*/
271
272	object *is_player_inv (object *op) {
273	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
274	if (op->env==op)
275	op->env = NULL;
276	return op;
277	}
278
279	/*
280	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
281	* Some error messages.
282	* The result of the dump is stored in the static global errmsg array.
283	*/
284
285	void dump_object2(object *op) {
286	errmsg[0] = 0;
287	return;
288	//TODO//D#d#
289	#if 0
290	char *cp;
291	/* object *tmp;*/
292
293	if(op->arch!=NULL) {
294	strcat(errmsg,"arch ");
295	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
296	strcat(errmsg,"\n");
297	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
298	strcat(errmsg,cp);
299	#if 0
300	/* Don't dump player diffs - they are too long, mostly meaningless, and
301	* will overflow the buffer.
302	* Changed so that we don't dump inventory either. This may
303	* also overflow the buffer.
304	*/
305	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	for (tmp=op->inv; tmp; tmp=tmp->below)
308	dump_object2(tmp);
309	#endif
310	strcat(errmsg,"end\n");
311	} else {
312	strcat(errmsg,"Object ");
313	if (op->name==NULL) strcat(errmsg, "(null)");
314	else strcat(errmsg,op->name);
315	strcat(errmsg,"\n");
316	#if 0
317	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
318	strcat(errmsg,cp);
319	for (tmp=op->inv; tmp; tmp=tmp->below)
320	dump_object2(tmp);
321	#endif
322	strcat(errmsg,"end\n");
323	}
324	#endif
325	}
326
327	/*
328	* Dumps an object. Returns output in the static global errmsg array.
329	*/
330
331	void dump_object(object *op) {	400	dump_object (object *op)
332	if(op==NULL) {	401	{
333	strcpy(errmsg,"[NULL pointer]");	402	if (!op)
334	return;	403	return strdup ("[NULLOBJ]");
335	}
336	errmsg[0]='\0';
337	dump_object2(op);
338	}
339		404
340	void dump_all_objects(void) {	405	object_freezer freezer;
341	object *op;	406	op->write (freezer);
342	for(op=objects;op!=NULL;op=op->next) {	407	return freezer.as_string ();
343	dump_object(op);
344	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
345	}
346	}	408	}
347		409
348	/*	410	/*
349	* get_nearest_part(multi-object, object 2) returns the part of the	411	* get_nearest_part(multi-object, object 2) returns the part of the
350	* multi-object 1 which is closest to the second object.	412	* multi-object 1 which is closest to the second object.
351	* If it's not a multi-object, it is returned.	413	* If it's not a multi-object, it is returned.
352	*/	414	*/
353		415	object *
354	object *get_nearest_part(object *op, const object *pl) {	416	get_nearest_part (object *op, const object *pl)
		417	{
355	object *tmp,*closest;	418	object *tmp, *closest;
356	int last_dist,i;	419	int last_dist, i;
		420
357	if(op->more==NULL)	421	if (!op->more)
358	return op;	422	return op;
		423
359	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	424	for (last_dist = distance (op, pl), closest = op, tmp = op->more;
		425	tmp;
		426	tmp = tmp->more)
360	if((i=distance(tmp,pl))<last_dist)	427	if ((i = distance (tmp, pl)) < last_dist)
361	closest=tmp,last_dist=i;	428	closest = tmp, last_dist = i;
		429
362	return closest;	430	return closest;
363	}	431	}
364		432
365	/*	433	/*
366	* Returns the object which has the count-variable equal to the argument.	434	* Returns the object which has the count-variable equal to the argument.
		435	* VERRRY slow.
367	*/	436	*/
368		437	object *
369	object *find_object(tag_t i) {	438	find_object (tag_t i)
370	object *op;	439	{
371	for(op=objects;op!=NULL;op=op->next)	440	for_all_objects (op)
372	if(op->count==i)	441	if (op->count == i)
373	break;
374	return op;	442	return op;
		443
		444	return 0;
375	}	445	}
376		446
377	/*	447	/*
378	* Returns the first object which has a name equal to the argument.	448	* Returns the first object which has a name equal to the argument.
379	* Used only by the patch command, but not all that useful.	449	* Used only by the patch command, but not all that useful.
380	* Enables features like "patch <name-of-other-player> food 999"	450	* Enables features like "patch <name-of-other-player> food 999"
381	*/	451	*/
382		452	object *
383	object *find_object_name(const char *str) {	453	find_object_name (const char *str)
384	const char *name = shstr::find (str);	454	{
		455	shstr_cmp str_ (str);
385	object *op;	456	object *op;
386	for(op=objects;op!=NULL;op=op->next)	457
		458	for_all_objects (op)
387	if(&op->name == name)	459	if (op->name == str_)
388	break;	460	break;
389		461
390	return op;	462	return op;
391	}	463	}
392
393	void free_all_object_data(void) {
394	#ifdef MEMORY_DEBUG
395	object *op, *next;
396
397	for (op=free_objects; op!=NULL; ) {
398	next=op->next;
399	free(op);
400	nrofallocobjects--;
401	nroffreeobjects--;
402	op=next;
403	}
404	#endif
405	LOG(llevDebug,"%d allocated objects, %d free objects, STARMAX=%d\n",
406	nrofallocobjects, nroffreeobjects,STARTMAX);
407	}
408
409	/*
410	* Returns the object which this object marks as being the owner.
411	* A id-scheme is used to avoid pointing to objects which have been
412	* freed and are now reused. If this is detected, the owner is
413	* set to NULL, and NULL is returned.
414	* Changed 2004-02-12 - if the player is setting at the play again
415	* prompt, he is removed, and we don't want to treat him as an owner of
416	* anything, so check removed flag. I don't expect that this should break
417	* anything - once an object is removed, it is basically dead anyways.
418	*/
419
420	object *get_owner(object *op) {
421	if(op->owner==NULL)
422	return NULL;
423
424	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
425	op->owner->count==op->ownercount)
426	return op->owner;
427
428	op->owner=NULL;
429	op->ownercount=0;
430	return NULL;
431	}
432
433	void clear_owner(object *op)
434	{
435	if (!op) return;
436
437	if (op->owner && op->ownercount == op->owner->count)
438	op->owner->refcount--;
439
440	op->owner = NULL;
441	op->ownercount = 0;
442	}
443
444
445		464
446	/*	465	/*
447	* Sets the owner and sets the skill and exp pointers to owner's current	466	* Sets the owner and sets the skill and exp pointers to owner's current
448	* skill and experience objects.	467	* skill and experience objects.
		468	* ACTUALLY NO! investigate! TODO
449	*/	469	*/
450	void set_owner (object *op, object *owner)	470	void
		471	object::set_owner (object *owner)
451	{	472	{
452	if(owner==NULL||op==NULL)	473	// allow objects which own objects
		474	if (owner)
		475	while (owner->owner)
		476	owner = owner->owner;
		477
		478	if (flag [FLAG_FREED])
		479	{
		480	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
453	return;	481	return;
		482	}
454		483
455	/* next line added to allow objects which own objects */
456	/* Add a check for ownercounts in here, as I got into an endless loop
457	* with the fireball owning a poison cloud which then owned the
458	* fireball. I believe that was caused by one of the objects getting
459	* freed and then another object replacing it. Since the ownercounts
460	* didn't match, this check is valid and I believe that cause is valid.
461	*/
462	while (owner->owner && owner!=owner->owner &&
463	owner->ownercount==owner->owner->count) owner=owner->owner;
464
465	/* IF the owner still has an owner, we did not resolve to a final owner.
466	* so lets not add to that.
467	*/
468	if (owner->owner) return;
469
470	op->owner=owner;	484	this->owner = owner;
471
472	op->ownercount=owner->count;
473	owner->refcount++;
474
475	}	485	}
476		486
477	/* Set the owner to clone's current owner and set the skill and experience	487	int
478	* objects to clone's objects (typically those objects that where the owner's	488	object::slottype () const
479	* current skill and experience objects at the time when clone's owner was
480	* set - not the owner's current skill and experience objects).
481	*
482	* Use this function if player created an object (e.g. fire bullet, swarm
483	* spell), and this object creates further objects whose kills should be
484	* accounted for the player's original skill, even if player has changed
485	* skills meanwhile.
486	*/
487	void copy_owner (object *op, object *clone)
488	{	489	{
489	object *owner = get_owner (clone);	490	if (type == SKILL)
490	if (owner == NULL) {	491	{
491	/* players don't have owners - they own themselves. Update	492	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
492	* as appropriate.	493	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		494	}
		495	else
		496	{
		497	if (slot [body_combat].info) return slot_combat;
		498	if (slot [body_range ].info) return slot_ranged;
		499	}
		500
		501	return slot_none;
		502	}
		503
		504	bool
		505	object::change_weapon (object *ob)
		506	{
		507	if (current_weapon == ob)
		508	return true;
		509
		510	if (chosen_skill)
		511	chosen_skill->flag [FLAG_APPLIED] = false;
		512
		513	current_weapon = ob;
		514	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		515
		516	if (chosen_skill)
		517	chosen_skill->flag [FLAG_APPLIED] = true;
		518
		519	update_stats ();
		520
		521	if (ob)
		522	{
		523	// now check wether any body locations became invalid, in which case
		524	// we cannot apply the weapon at the moment.
		525	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		526	if (slot[i].used < 0)
493	*/	527	{
494	if (clone->type == PLAYER) owner=clone;	528	current_weapon = chosen_skill = 0;
495	else return;	529	update_stats ();
		530
		531	new_draw_info_format (NDI_UNIQUE, 0, this,
		532	"You try to balance all your items at once, "
		533	"but the %s is just too much for your body. "
		534	"[You need to unapply some items first.]", &ob->name);
		535	return false;
		536	}
		537
		538	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		539	}
		540	else
		541	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		542
		543	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
496	}	544	{
497	set_owner(op, owner);	545	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		546	&name, ob->debug_desc ());
		547	return false;
		548	}
498		549
499	}	550	return true;
500
501	/*
502	* Resets vital variables in an object
503	*/
504
505	void reset_object(object *op) {
506
507	op->name = NULL;
508	op->name_pl = NULL;
509	op->title = NULL;
510	op->race = NULL;
511	op->slaying = NULL;
512	op->skill = NULL;
513	op->msg = NULL;
514	op->materialname = NULL;
515	op->lore = NULL;
516	clear_object(op);
517	}	551	}
518		552
519	/* Zero the key_values on op, decrementing the shared-string	553	/* Zero the key_values on op, decrementing the shared-string
520	* refcounts and freeing the links.	554	* refcounts and freeing the links.
521	*/	555	*/
		556	static void
522	static void free_key_values(object * op)	557	free_key_values (object *op)
523	{	558	{
524	for (key_value *i = op->key_values; i != 0; )	559	for (key_value *i = op->key_values; i; )
525	{	560	{
526	key_value *next = i->next;	561	key_value *next = i->next;
527	delete i;	562	delete i;
		563
528	i = next;	564	i = next;
529	}	565	}
530		566
531	op->key_values = 0;	567	op->key_values = 0;
532	}	568	}
533		569
534	/*	570	object &
535	* clear_object() frees everything allocated by an object, and also	571	object::operator =(const object &src)
536	* clears all variables and flags to default settings.
537	*/
538
539	void clear_object(object *op)
540	{	572	{
541	op->clear ();	573	bool is_freed = flag [FLAG_FREED];
		574	bool is_removed = flag [FLAG_REMOVED];
542		575
543	free_key_values (op);	576	*(object_copy *)this = src;
544		577
545	/* the memset will clear all these values for us, but we need	578	flag [FLAG_FREED] = is_freed;
546	* to reduce the refcount on them.	579	flag [FLAG_REMOVED] = is_removed;
547	*/
548	op->name = 0;
549	op->name_pl = 0;
550	op->title = 0;
551	op->race = 0;
552	op->slaying = 0;
553	op->skill = 0;
554	op->msg = 0;
555	op->lore = 0;
556	op->materialname = 0;
557
558	memset((void*)op, 0, sizeof (object_special));
559	/* Below here, we clear things that are not done by the memset,
560	* or set default values that are not zero.
561	*/
562	/* This is more or less true */
563	SET_FLAG (op, FLAG_REMOVED);
564
565	op->contr = NULL;
566	op->below = NULL;
567	op->above = NULL;
568	op->inv = NULL;
569	op->container=NULL;
570	op->env=NULL;
571	op->more=NULL;
572	op->head=NULL;
573	op->map=NULL;
574	op->refcount=0;
575	op->active_next = NULL;
576	op->active_prev = NULL;
577	/* What is not cleared is next, prev, and count */
578
579	op->expmul=1.0;
580	op->face = blank_face;
581	op->attacked_by_count = (tag_t) -1;
582
583	if (settings.casting_time)
584	op->casting_time = -1;
585	}
586
587	/*
588	* copy object first frees everything allocated by the second object,
589	* and then copies the contends of the first object into the second
590	* object, allocating what needs to be allocated. Basically, any
591	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
592	* if the first object is freed, the pointers in the new object
593	* will point at garbage.
594	*/
595
596	void copy_object(object *op2, object *op)
597	{
598	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);
599
600	op->clear ();
601
602	free_key_values (op);
603
604	*(object_special *)op = *(object_special *)op2;
605	op2->clone (op);
606
607	if (is_freed) SET_FLAG(op,FLAG_FREED);
608	if (is_removed) SET_FLAG(op,FLAG_REMOVED);
609
610	if (op2->speed < 0)
611	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
612		580
613	/* Copy over key_values, if any. */	581	/* Copy over key_values, if any. */
614	if (op2->key_values != NULL) {	582	if (src.key_values)
		583	{
615	key_value *tail = NULL;	584	key_value *tail = 0;
616	key_value *i;
617
618	op->key_values = NULL;	585	key_values = 0;
619		586
620	for (i = op2->key_values; i != NULL; i = i->next)	587	for (key_value *i = src.key_values; i; i = i->next)
621	{	588	{
622	key_value *new_link = new key_value;	589	key_value *new_link = new key_value;
623		590
624	new_link->next = NULL;	591	new_link->next = 0;
625	new_link->key = i->key;	592	new_link->key = i->key;
626	new_link->value = i->value;	593	new_link->value = i->value;
627		594
628	/* Try and be clever here, too. */	595	/* Try and be clever here, too. */
629	if (op->key_values == NULL)	596	if (!key_values)
630	{	597	{
631	op->key_values = new_link;	598	key_values = new_link;
632	tail = new_link;	599	tail = new_link;
633	}	600	}
634	else	601	else
635	{	602	{
636	tail->next = new_link;	603	tail->next = new_link;
637	tail = new_link;	604	tail = new_link;
638	}	605	}
639	}	606	}
640	}	607	}
641
642	update_ob_speed (op);
643	}	608	}
644		609
645	/*	610	/*
646	* expand_objects() allocates more objects for the list of unused objects.	611	* copy_to first frees everything allocated by the dst object,
647	* It is called from get_object() if the unused list is empty.	612	* and then copies the contents of itself into the second
		613	* object, allocating what needs to be allocated. Basically, any
		614	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
		615	* if the first object is freed, the pointers in the new object
		616	* will point at garbage.
		617	*/
		618	void
		619	object::copy_to (object *dst)
		620	{
		621	*dst = *this;
		622
		623	if (speed < 0)
		624	dst->speed_left -= rndm ();
		625
		626	dst->set_speed (dst->speed);
		627	}
		628
		629	void
		630	object::instantiate ()
		631	{
		632	if (!uuid.seq) // HACK
		633	uuid = UUID::gen ();
		634
		635	speed_left = -0.1f;
		636	/* copy the body_info to the body_used - this is only really
		637	* need for monsters, but doesn't hurt to do it for everything.
		638	* by doing so, when a monster is created, it has good starting
		639	* values for the body_used info, so when items are created
		640	* for it, they can be properly equipped.
648	*/	641	*/
		642	for (int i = NUM_BODY_LOCATIONS; i--; )
		643	slot[i].used = slot[i].info;
649		644
650	void expand_objects(void) {	645	attachable::instantiate ();
651	int i;
652	object *obj;
653	obj = new object [OBJ_EXPAND];
654
655	free_objects=obj;
656	obj[0].prev=NULL;
657	obj[0].next= &obj[1],
658	SET_FLAG(&(obj[0]), FLAG_REMOVED);
659	SET_FLAG(&(obj[0]), FLAG_FREED);
660
661	for(i=1;i<OBJ_EXPAND-1;i++) {
662	obj[i].next= &obj[i+1],
663	obj[i].prev= &obj[i-1],
664	SET_FLAG(&(obj[i]), FLAG_REMOVED);
665	SET_FLAG(&(obj[i]), FLAG_FREED);
666	}
667	obj[OBJ_EXPAND-1].prev= &obj[OBJ_EXPAND-2],
668	obj[OBJ_EXPAND-1].next=NULL,
669	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_REMOVED);
670	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_FREED);
671
672	nrofallocobjects += OBJ_EXPAND;
673	nroffreeobjects += OBJ_EXPAND;
674	}	646	}
675		647
676	/*
677	* get_object() grabs an object from the list of unused objects, makes
678	* sure it is initialised, and returns it.
679	* If there are no free objects, expand_objects() is called to get more.
680	*/
681
682	object *get_object(void)
683	{
684	object *op;	648	object *
685		649	object::clone ()
686	if(free_objects==NULL)	650	{
687	expand_objects();	651	object *neu = create ();
688		652	copy_to (neu);
689	op = free_objects;
690
691	if (!QUERY_FLAG (op, FLAG_FREED))
692	LOG(llevError,"Fatal: Getting busy object.\n");
693
694	free_objects = op->next;
695
696	if (free_objects != NULL)
697	free_objects->prev = NULL;
698
699	op->count= ++ob_count;
700	op->name=NULL;
701	op->name_pl=NULL;
702	op->title=NULL;
703	op->race=NULL;
704	op->slaying=NULL;
705	op->skill = NULL;
706	op->lore=NULL;
707	op->msg=NULL;
708	op->materialname=NULL;
709	op->next=objects;
710	op->prev=NULL;
711	op->active_next = NULL;
712	op->active_prev = NULL;
713	if(objects!=NULL)
714	objects->prev=op;
715	objects=op;
716	clear_object(op);
717	SET_FLAG(op,FLAG_REMOVED);
718	nroffreeobjects--;
719	return op;	653	return neu;
720	}	654	}
721		655
722	/*	656	/*
723	* If an object with the IS_TURNABLE() flag needs to be turned due	657	* If an object with the IS_TURNABLE() flag needs to be turned due
724	* to the closest player being on the other side, this function can	658	* to the closest player being on the other side, this function can
725	* be called to update the face variable, _and_ how it looks on the map.	659	* be called to update the face variable, _and_ how it looks on the map.
726	*/	660	*/
727		661	void
728	void update_turn_face(object *op) {	662	update_turn_face (object *op)
		663	{
729	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	664	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
730	return;	665	return;
		666
731	SET_ANIMATION(op, op->direction);	667	SET_ANIMATION (op, op->direction);
732	update_object(op,UP_OBJ_FACE);	668	update_object (op, UP_OBJ_FACE);
733	}	669	}
734		670
735	/*	671	/*
736	* Updates the speed of an object. If the speed changes from 0 to another	672	* Updates the speed of an object. If the speed changes from 0 to another
737	* value, or vice versa, then add/remove the object from the active list.	673	* value, or vice versa, then add/remove the object from the active list.
738	* This function needs to be called whenever the speed of an object changes.	674	* This function needs to be called whenever the speed of an object changes.
739	*/	675	*/
740		676	void
741	void update_ob_speed(object *op) {	677	object::set_speed (float speed)
742	extern int arch_init;	678	{
743		679	if (flag [FLAG_FREED] && speed)
744	/* No reason putting the archetypes objects on the speed list,	680	{
745	* since they never really need to be updated.
746	*/
747
748	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
749	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	681	LOG (llevError, "Object %s is freed but has speed.\n", &name);
750	#ifdef MANY_CORES
751	abort();
752	#else
753	op->speed = 0;	682	speed = 0;
754	#endif
755	}	683	}
756	if (arch_init) {
757	return;
758	}
759	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
760	/* If already on active list, don't do anything */
761	if (op->active_next || op->active_prev || op==active_objects)
762	return;
763		684
764	/* process_events() expects us to insert the object at the beginning	685	this->speed = speed;
765	* of the list. */	686
766	op->active_next = active_objects;	687	if (has_active_speed ())
767	if (op->active_next!=NULL)	688	activate ();
768	op->active_next->active_prev = op;
769	active_objects = op;
770	}
771	else {	689	else
772	/* If not on the active list, nothing needs to be done */	690	deactivate ();
773	if (!op->active_next && !op->active_prev && op!=active_objects)
774	return;
775
776	if (op->active_prev==NULL) {
777	active_objects = op->active_next;
778	if (op->active_next!=NULL)
779	op->active_next->active_prev = NULL;
780	}
781	else {
782	op->active_prev->active_next = op->active_next;
783	if (op->active_next)
784	op->active_next->active_prev = op->active_prev;
785	}
786	op->active_next = NULL;
787	op->active_prev = NULL;
788	}
789	}	691	}
790		692
791	/* This function removes object 'op' from the list of active
792	* objects.
793	* This should only be used for style maps or other such
794	* reference maps where you don't want an object that isn't
795	* in play chewing up cpu time getting processed.
796	* The reverse of this is to call update_ob_speed, which
797	* will do the right thing based on the speed of the object.
798	*/
799	void remove_from_active_list(object *op)
800	{
801	/* If not on the active list, nothing needs to be done */
802	if (!op->active_next && !op->active_prev && op!=active_objects)
803	return;
804
805	if (op->active_prev==NULL) {
806	active_objects = op->active_next;
807	if (op->active_next!=NULL)
808	op->active_next->active_prev = NULL;
809	}
810	else {
811	op->active_prev->active_next = op->active_next;
812	if (op->active_next)
813	op->active_next->active_prev = op->active_prev;
814	}
815	op->active_next = NULL;
816	op->active_prev = NULL;
817	}
818
819	/*	693	/*
820	* update_object() updates the array which represents the map.	694	* update_object() updates the the map.
821	* It takes into account invisible objects (and represent squares covered	695	* It takes into account invisible objects (and represent squares covered
822	* by invisible objects by whatever is below them (unless it's another	696	* by invisible objects by whatever is below them (unless it's another
823	* invisible object, etc...)	697	* invisible object, etc...)
824	* If the object being updated is beneath a player, the look-window	698	* If the object being updated is beneath a player, the look-window
825	* of that player is updated (this might be a suboptimal way of	699	* of that player is updated (this might be a suboptimal way of
826	* updating that window, though, since update_object() is called _often_)	700	* updating that window, though, since update_object() is called _often_)
827	*	701	*
828	* action is a hint of what the caller believes need to be done.	702	* action is a hint of what the caller believes need to be done.
829	* For example, if the only thing that has changed is the face (due to
830	* an animation), we don't need to call update_position until that actually
831	* comes into view of a player. OTOH, many other things, like addition/removal
832	* of walls or living creatures may need us to update the flags now.
833	* current action are:	703	* current action are:
834	* UP_OBJ_INSERT: op was inserted	704	* UP_OBJ_INSERT: op was inserted
835	* UP_OBJ_REMOVE: op was removed	705	* UP_OBJ_REMOVE: op was removed
836	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	706	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
837	* as that is easier than trying to look at what may have changed.	707	* as that is easier than trying to look at what may have changed.
838	* UP_OBJ_FACE: only the objects face has changed.	708	* UP_OBJ_FACE: only the objects face has changed.
839	*/	709	*/
840		710	void
841	void update_object(object *op, int action) {	711	update_object (object *op, int action)
842	int update_now=0, flags;	712	{
843	MoveType move_on, move_off, move_block, move_slow;
844
845	if (op == NULL) {	713	if (op == NULL)
		714	{
846	/* this should never happen */	715	/* this should never happen */
847	LOG(llevDebug,"update_object() called for NULL object.\n");	716	LOG (llevDebug, "update_object() called for NULL object.\n");
848	return;	717	return;
849	}
850		718	}
851	if(op->env!=NULL) {	719
		720	if (op->env)
		721	{
852	/* Animation is currently handled by client, so nothing	722	/* Animation is currently handled by client, so nothing
853	* to do in this case.	723	* to do in this case.
854	*/	724	*/
855	return;	725	return;
856	}	726	}
857		727
858	/* If the map is saving, don't do anything as everything is	728	/* If the map is saving, don't do anything as everything is
859	* going to get freed anyways.	729	* going to get freed anyways.
860	*/	730	*/
861	if (!op->map || op->map->in_memory == MAP_SAVING) return;	731	if (!op->map || op->map->in_memory == MAP_SAVING)
862		732	return;
		733
863	/* make sure the object is within map boundaries */	734	/* make sure the object is within map boundaries */
864	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	735	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
865	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	736	{
866	LOG(llevError,"update_object() called for object out of map!\n");	737	LOG (llevError, "update_object() called for object out of map!\n");
867	#ifdef MANY_CORES	738	#ifdef MANY_CORES
868	abort();	739	abort ();
869	#endif	740	#endif
870	return;	741	return;
871	}
872		742	}
873	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
874	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
875	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
876	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
877	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
878	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
879		743
		744	mapspace &m = op->ms ();
		745
		746	if (!(m.flags_ & P_UPTODATE))
		747	/* nop */;
880	if (action == UP_OBJ_INSERT) {	748	else if (action == UP_OBJ_INSERT)
		749	{
		750	// this is likely overkill, TODO: revisit (schmorp)
881	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	751	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
882	update_now=1;
883
884	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	752	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
885	update_now=1;	753	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
886		754	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		755	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
887	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	756	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
888	update_now=1;	757	|| (m.move_on | op->move_on ) != m.move_on
889
890	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
891	update_now=1;
892
893	if ((move_on | op->move_on) != move_on) update_now=1;
894	if ((move_off | op->move_off) != move_off) update_now=1;	758	|| (m.move_off | op->move_off ) != m.move_off
		759	|| (m.move_slow | op->move_slow) != m.move_slow
895	/* This isn't perfect, but I don't expect a lot of objects to	760	/* This isn't perfect, but I don't expect a lot of objects to
896	* to have move_allow right now.	761	* to have move_allow right now.
897	*/	762	*/
898	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	763	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
899	update_now=1;	764	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
900	if ((move_slow | op->move_slow) != move_slow) update_now=1;	765	m.flags_ = 0;
901	}	766	}
902	/* if the object is being removed, we can't make intelligent	767	/* if the object is being removed, we can't make intelligent
903	* decisions, because remove_ob can't really pass the object	768	* decisions, because remove_ob can't really pass the object
904	* that is being removed.	769	* that is being removed.
905	*/	770	*/
906	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	771	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
907	update_now=1;	772	m.flags_ = 0;
908	} else if (action == UP_OBJ_FACE) {	773	else if (action == UP_OBJ_FACE)
909	/* Nothing to do for that case */	774	/* Nothing to do for that case */ ;
910	}
911	else {	775	else
912	LOG(llevError,"update_object called with invalid action: %d\n", action);	776	LOG (llevError, "update_object called with invalid action: %d\n", action);
913	}
914		777
915	if (update_now) {
916	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
917	update_position(op->map, op->x, op->y);
918	}
919
920	if(op->more!=NULL)	778	if (op->more)
921	update_object(op->more, action);	779	update_object (op->more, action);
922	}	780	}
923		781
		782	object::object ()
		783	{
		784	SET_FLAG (this, FLAG_REMOVED);
924		785
925	/*	786	expmul = 1.0;
926	* free_object() frees everything allocated by an object, removes	787	face = blank_face;
927	* it from the list of used objects, and puts it on the list of
928	* free objects. The IS_FREED() flag is set in the object.
929	* The object must have been removed by remove_ob() first for
930	* this function to succeed.
931	*
932	* If free_inventory is set, free inventory as well. Else drop items in
933	* inventory to the ground.
934	*/
935
936	void free_object(object *ob) {
937	free_object2(ob, 0);
938	}	788	}
939	void free_object2(object *ob, int free_inventory) {
940	object *tmp,*op;
941		789
942	ob->clear ();	790	object::~object ()
		791	{
		792	unlink ();
943		793
944	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	794	free_key_values (this);
945	LOG(llevDebug,"Free object called with non removed object\n");	795	}
946	dump_object(ob);	796
947	#ifdef MANY_CORES	797	static int object_count;
948	abort();	798
949	#endif	799	void object::link ()
950	}	800	{
951	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	801	assert (!index);//D
952	LOG(llevMonster,"Warning: tried to free friendly object.\n");	802	uuid = UUID::gen ();
953	remove_friendly_object(ob);	803	count = ++object_count;
954	}	804
955	if(QUERY_FLAG(ob,FLAG_FREED)) {	805	refcnt_inc ();
956	dump_object(ob);	806	objects.insert (this);
957	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	807	}
		808
		809	void object::unlink ()
		810	{
		811	if (!index)
958	return;	812	return;
		813
		814	objects.erase (this);
		815	refcnt_dec ();
		816	}
		817
		818	void
		819	object::activate ()
		820	{
		821	/* If already on active list, don't do anything */
		822	if (active)
		823	return;
		824
		825	if (has_active_speed ())
		826	actives.insert (this);
		827	}
		828
		829	void
		830	object::activate_recursive ()
		831	{
		832	activate ();
		833
		834	for (object *op = inv; op; op = op->below)
		835	op->activate_recursive ();
		836	}
		837
		838	/* This function removes object 'op' from the list of active
		839	* objects.
		840	* This should only be used for style maps or other such
		841	* reference maps where you don't want an object that isn't
		842	* in play chewing up cpu time getting processed.
		843	* The reverse of this is to call update_ob_speed, which
		844	* will do the right thing based on the speed of the object.
		845	*/
		846	void
		847	object::deactivate ()
		848	{
		849	/* If not on the active list, nothing needs to be done */
		850	if (!active)
		851	return;
		852
		853	actives.erase (this);
		854	}
		855
		856	void
		857	object::deactivate_recursive ()
		858	{
		859	for (object *op = inv; op; op = op->below)
		860	op->deactivate_recursive ();
		861
		862	deactivate ();
		863	}
		864
		865	void
		866	object::set_flag_inv (int flag, int value)
		867	{
		868	for (object *op = inv; op; op = op->below)
959	}	869	{
960	if(ob->more!=NULL) {	870	op->flag [flag] = value;
961	free_object2(ob->more, free_inventory);	871	op->set_flag_inv (flag, value);
962	ob->more=NULL;
963	}	872	}
964	if (ob->inv) {	873	}
		874
		875	/*
		876	* Remove and free all objects in the inventory of the given object.
		877	* object.c ?
		878	*/
		879	void
		880	object::destroy_inv (bool drop_to_ground)
		881	{
		882	// need to check first, because the checks below might segfault
		883	// as we might be on an invalid mapspace and crossfire code
		884	// is too buggy to ensure that the inventory is empty.
		885	// corollary: if you create arrows etc. with stuff in tis inventory,
		886	// cf will crash below with off-map x and y
		887	if (!inv)
		888	return;
		889
965	/* Only if the space blocks everything do we not process -	890	/* Only if the space blocks everything do we not process -
966	* if some form of movemnt is allowed, let objects	891	* if some form of movement is allowed, let objects
967	* drop on that space.	892	* drop on that space.
968	*/	893	*/
969	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	894	if (!drop_to_ground
970	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	895	|| !map
971	{	896	|| map->in_memory != MAP_ACTIVE
972	op=ob->inv;	897	|| map->nodrop
973	while(op!=NULL) {	898	|| ms ().move_block == MOVE_ALL)
974	tmp=op->below;	899	{
975	remove_ob(op);	900	while (inv)
976	free_object2(op, free_inventory);
977	op=tmp;
978	}
979	}	901	{
980	else { /* Put objects in inventory onto this space */	902	inv->destroy_inv (drop_to_ground);
981	op=ob->inv;	903	inv->destroy ();
982	while(op!=NULL) {
983	tmp=op->below;
984	remove_ob(op);
985	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||
986	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))
987	free_object(op);
988	else {
989	op->x=ob->x;
990	op->y=ob->y;
991	insert_ob_in_map(op,ob->map,NULL,0); /* Insert in same map as the envir */
992	}
993	op=tmp;
994	}	904	}
		905	}
		906	else
		907	{ /* Put objects in inventory onto this space */
		908	while (inv)
995	}	909	{
996	}	910	object *op = inv;
997	/* Remove object from the active list */
998	ob->speed = 0;
999	update_ob_speed(ob);
1000		911
1001	SET_FLAG(ob, FLAG_FREED);	912	if (op->flag [FLAG_STARTEQUIP]
1002	ob->count = 0;	913	|| op->flag [FLAG_NO_DROP]
1003		914	|| op->type == RUNE
1004	/* Remove this object from the list of used objects */	915	|| op->type == TRAP
1005	if(ob->prev==NULL) {	916	|| op->flag [FLAG_IS_A_TEMPLATE]
1006	objects=ob->next;	917	|| op->flag [FLAG_DESTROY_ON_DEATH])
1007	if(objects!=NULL)	918	op->destroy ();
1008	objects->prev=NULL;	919	else
		920	map->insert (op, x, y);
		921	}
1009	}	922	}
1010	else {
1011	ob->prev->next=ob->next;
1012	if(ob->next!=NULL)
1013	ob->next->prev=ob->prev;
1014	}
1015
1016	ob->name = 0;
1017	ob->name_pl = 0;
1018	ob->title = 0;
1019	ob->race = 0;
1020	ob->slaying = 0;
1021	ob->skill = 0;
1022	ob->lore = 0;
1023	ob->msg = 0;
1024	ob->materialname = 0;
1025
1026	free_key_values (ob);
1027
1028	/* Now link it with the free_objects list: */
1029	ob->prev=NULL;
1030	ob->next=free_objects;
1031
1032	if(free_objects!=NULL)
1033	free_objects->prev=ob;
1034
1035	free_objects=ob;
1036	nroffreeobjects++;
1037	}	923	}
1038		924
1039	/*	925	object *object::create ()
1040	* count_free() returns the number of objects on the list of free objects.
1041	*/
1042
1043	int count_free ()
1044	{	926	{
1045	int i=0;
1046	object *tmp=free_objects;	927	object *op = new object;
1047	while(tmp!=NULL)	928	op->link ();
1048	tmp=tmp->next, i++;
1049	return i;	929	return op;
1050	}	930	}
1051		931
1052	/*	932	void
1053	* count_used() returns the number of objects on the list of used objects.	933	object::do_destroy ()
1054	*/
1055
1056	int count_used()
1057	{	934	{
1058	int i=0;	935	if (object *pl = visible_to ())
1059	object *tmp=objects;	936	esrv_del_item (pl->contr, count);
1060	while(tmp!=NULL)
1061	tmp=tmp->next, i++;
1062	return i;
1063	}
1064		937
1065	/*	938	attachable::do_destroy ();
1066	* count_active() returns the number of objects on the list of active objects.
1067	*/
1068		939
1069	int count_active()	940	if (flag [FLAG_IS_LINKED])
1070	{	941	remove_button_link (this);
1071	int i=0;
1072	object *tmp=active_objects;
1073	while(tmp!=NULL)
1074	tmp=tmp->active_next, i++;
1075	return i;
1076	}
1077		942
1078	/*	943	if (flag [FLAG_FRIENDLY])
1079	* sub_weight() recursively (outwards) subtracts a number from the	944	remove_friendly_object (this);
1080	* weight of an object (and what is carried by it's environment(s)).
1081	*/
1082		945
1083	void sub_weight (object *op, signed long weight) {	946	if (!flag [FLAG_REMOVED])
1084	while (op != NULL) {	947	remove ();
1085	if (op->type == CONTAINER) {	948
1086	weight=(signed long)(weight*(100-op->stats.Str)/100);	949	destroy_inv (true);
		950
		951	deactivate ();
		952	unlink ();
		953
		954	flag [FLAG_FREED] = 1;
		955
		956	// hack to ensure that freed objects still have a valid map
		957	{
		958	static maptile *freed_map; // freed objects are moved here to avoid crashes
		959
		960	if (!freed_map)
		961	{
		962	freed_map = new maptile;
		963
		964	freed_map->path = "<freed objects map>";
		965	freed_map->name = "/internal/freed_objects_map";
		966	freed_map->width = 3;
		967	freed_map->height = 3;
		968	freed_map->nodrop = 1;
		969
		970	freed_map->alloc ();
		971	freed_map->in_memory = MAP_ACTIVE;
1087	}	972	}
1088	op->carrying-=weight;	973
1089	op = op->env;	974	map = freed_map;
		975	x = 1;
		976	y = 1;
1090	}	977	}
1091	}
1092		978
1093	/* remove_ob(op):	979	if (more)
		980	{
		981	more->destroy ();
		982	more = 0;
		983	}
		984
		985	head = 0;
		986
		987	// clear those pointers that likely might cause circular references
		988	owner = 0;
		989	enemy = 0;
		990	attacked_by = 0;
		991	current_weapon = 0;
		992	}
		993
		994	void
		995	object::destroy (bool destroy_inventory)
		996	{
		997	if (destroyed ())
		998	return;
		999
		1000	if (destroy_inventory)
		1001	destroy_inv (false);
		1002
		1003	if (is_head ())
		1004	if (sound_destroy)
		1005	play_sound (sound_destroy);
		1006	else if (flag [FLAG_MONSTER])
		1007	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1008
		1009	attachable::destroy ();
		1010	}
		1011
		1012	/* op->remove ():
1094	* This function removes the object op from the linked list of objects	1013	* This function removes the object op from the linked list of objects
1095	* which it is currently tied to. When this function is done, the	1014	* which it is currently tied to. When this function is done, the
1096	* object will have no environment. If the object previously had an	1015	* object will have no environment. If the object previously had an
1097	* environment, the x and y coordinates will be updated to	1016	* environment, the x and y coordinates will be updated to
1098	* the previous environment.	1017	* the previous environment.
1099	* Beware: This function is called from the editor as well!
1100	*/	1018	*/
1101		1019	void
1102	void remove_ob(object *op) {	1020	object::do_remove ()
		1021	{
1103	object *tmp,*last=NULL;	1022	object *tmp, *last = 0;
1104	object *otmp;	1023	object *otmp;
1105	tag_t tag;
1106	int check_walk_off;
1107	mapstruct *m;
1108	sint16 x,y;
1109
1110		1024
1111	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1025	if (QUERY_FLAG (this, FLAG_REMOVED))
1112	dump_object(op);	1026	return;
1113	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1114		1027
1115	/* Changed it to always dump core in this case. As has been learned
1116	* in the past, trying to recover from errors almost always
1117	* make things worse, and this is a real error here - something
1118	* that should not happen.
1119	* Yes, if this was a mission critical app, trying to do something
1120	* to recover may make sense, but that is because failure of the app
1121	* may have other disastrous problems. Cf runs out of a script
1122	* so is easily enough restarted without any real problems.
1123	* MSW 2001-07-01
1124	*/
1125	abort();
1126	}
1127	if(op->more!=NULL)
1128	remove_ob(op->more);
1129
1130	SET_FLAG(op, FLAG_REMOVED);	1028	SET_FLAG (this, FLAG_REMOVED);
		1029	INVOKE_OBJECT (REMOVE, this);
1131		1030
		1031	if (more)
		1032	more->remove ();
		1033
1132	/*	1034	/*
1133	* In this case, the object to be removed is in someones	1035	* In this case, the object to be removed is in someones
1134	* inventory.	1036	* inventory.
		1037	*/
		1038	if (env)
		1039	{
		1040	adjust_weight (env, -total_weight ());
		1041
		1042	*(above ? &above->below : &env->inv) = below;
		1043
		1044	if (below)
		1045	below->above = above;
		1046
		1047	/* we set up values so that it could be inserted into
		1048	* the map, but we don't actually do that - it is up
		1049	* to the caller to decide what we want to do.
1135	*/	1050	*/
1136	if(op->env!=NULL) {	1051	map = env->map;
1137	if(op->nrof)	1052	x = env->x;
1138	sub_weight(op->env, op->weight*op->nrof);	1053	y = env->y;
1139	else	1054	above = 0;
1140	sub_weight(op->env, op->weight+op->carrying);	1055	below = 0;
		1056	env = 0;
1141		1057
1142	/* NO_FIX_PLAYER is set when a great many changes are being	1058	/* NO_FIX_PLAYER is set when a great many changes are being
1143	* made to players inventory. If set, avoiding the call	1059	* made to players inventory. If set, avoiding the call
1144	* to save cpu time.	1060	* to save cpu time.
		1061	*/
		1062	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
		1063	otmp->update_stats ();
		1064	}
		1065	else if (map)
		1066	{
		1067	if (type == PLAYER)
		1068	{
		1069	// leaving a spot always closes any open container on the ground
		1070	if (container && !container->env)
		1071	// this causes spurious floorbox updates, but it ensures
		1072	// that the CLOSE event is being sent.
		1073	close_container ();
		1074
		1075	--map->players;
		1076	map->touch ();
		1077	}
		1078
		1079	map->dirty = true;
		1080	mapspace &ms = this->ms ();
		1081
		1082	/* link the object above us */
		1083	if (above)
		1084	above->below = below;
		1085	else
		1086	ms.top = below; /* we were top, set new top */
		1087
		1088	/* Relink the object below us, if there is one */
		1089	if (below)
		1090	below->above = above;
		1091	else
		1092	{
		1093	/* Nothing below, which means we need to relink map object for this space
		1094	* use translated coordinates in case some oddness with map tiling is
		1095	* evident
1145	*/	1096	*/
1146	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1097	if (GET_MAP_OB (map, x, y) != this)
1147	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1098	LOG (llevError, "remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom? %s\n", debug_desc ());
1148	fix_player(otmp);
1149		1099
1150	if(op->above!=NULL)	1100	ms.bot = above; /* goes on above it. */
1151	op->above->below=op->below;
1152	else
1153	op->env->inv=op->below;
1154
1155	if(op->below!=NULL)
1156	op->below->above=op->above;
1157
1158	/* we set up values so that it could be inserted into
1159	* the map, but we don't actually do that - it is up
1160	* to the caller to decide what we want to do.
1161	*/	1101	}
1162	op->x=op->env->x,op->y=op->env->y;	1102
1163	op->ox=op->x,op->oy=op->y;	1103	above = 0;
1164	op->map=op->env->map;	1104	below = 0;
1165	op->above=NULL,op->below=NULL;	1105
1166	op->env=NULL;	1106	if (map->in_memory == MAP_SAVING)
1167	return;	1107	return;
1168	}
1169		1108
1170	/* If we get here, we are removing it from a map */	1109	int check_walk_off = !flag [FLAG_NO_APPLY];
1171	if (op->map == NULL) return;
1172		1110
1173	x = op->x;	1111	if (object *pl = ms.player ())
1174	y = op->y;
1175	m = get_map_from_coord(op->map, &x, &y);
1176
1177	if (!m) {
1178	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1179	op->map->path, op->x, op->y);
1180	/* in old days, we used to set x and y to 0 and continue.
1181	* it seems if we get into this case, something is probablye
1182	* screwed up and should be fixed.
1183	*/
1184	abort();
1185	}
1186	if (op->map != m) {
1187	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1188	op->map->path, m->path, op->x, op->y, x, y);
1189	}
1190
1191	/* Re did the following section of code - it looks like it had
1192	* lots of logic for things we no longer care about
1193	*/
1194
1195	/* link the object above us */
1196	if (op->above)
1197	op->above->below=op->below;
1198	else
1199	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1200
1201	/* Relink the object below us, if there is one */
1202	if(op->below) {
1203	op->below->above=op->above;
1204	} else {
1205	/* Nothing below, which means we need to relink map object for this space
1206	* use translated coordinates in case some oddness with map tiling is
1207	* evident
1208	*/
1209	if(GET_MAP_OB(m,x,y)!=op) {
1210	dump_object(op);
1211	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);
1212	dump_object(GET_MAP_OB(m,x,y));
1213	LOG(llevError,"%s\n",errmsg);
1214	}	1112	{
1215	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1113	if (pl->container == this)
1216	}
1217	op->above=NULL;
1218	op->below=NULL;
1219
1220	if (op->map->in_memory == MAP_SAVING)
1221	return;
1222
1223	tag = op->count;
1224	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1225	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1226	/* No point updating the players look faces if he is the object
1227	* being removed.
1228	*/
1229
1230	if(tmp->type==PLAYER && tmp!=op) {
1231	/* If a container that the player is currently using somehow gets	1114	/* If a container that the player is currently using somehow gets
1232	* removed (most likely destroyed), update the player view	1115	* removed (most likely destroyed), update the player view
1233	* appropriately.	1116	* appropriately.
1234	*/	1117	*/
1235	if (tmp->container==op) {	1118	pl->close_container ();
1236	CLEAR_FLAG(op, FLAG_APPLIED);	1119
1237	tmp->container=NULL;	1120	pl->contr->ns->floorbox_update ();
		1121	}
		1122
		1123	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1124	{
		1125	/* No point updating the players look faces if he is the object
		1126	* being removed.
		1127	*/
		1128
		1129	/* See if object moving off should effect something */
		1130	if (check_walk_off
		1131	&& ((move_type & tmp->move_off)
		1132	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1133	{
		1134	move_apply (tmp, this, 0);
		1135
		1136	if (destroyed ())
		1137	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1238	}	1138	}
1239	tmp->contr->socket.update_look=1;
1240	}
1241	/* See if player moving off should effect something */
1242	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1243	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1244		1139
1245	move_apply(tmp, op, NULL);
1246	if (was_destroyed (op, tag)) {
1247	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1248	"leaving object\n", &tmp->name, &tmp->arch->name);
1249	}
1250	}
1251
1252	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1253
1254	if(tmp->above == tmp)
1255	tmp->above = NULL;
1256	last=tmp;	1140	last = tmp;
1257	}	1141	}
		1142
1258	/* last == NULL of there are no objects on this space */	1143	/* last == NULL if there are no objects on this space */
1259	if (last==NULL) {	1144	//TODO: this makes little sense, why only update the topmost object?
1260	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1145	if (!last)
1261	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1146	map->at (x, y).flags_ = 0;
1262	* those out anyways, and if there are any flags set right now, they won't
1263	* be correct anyways.
1264	*/
1265	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1266	update_position(op->map, op->x, op->y);
1267	}
1268	else	1147	else
1269	update_object(last, UP_OBJ_REMOVE);	1148	update_object (last, UP_OBJ_REMOVE);
1270		1149
1271	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1150	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1272	update_all_los(op->map, op->x, op->y);	1151	update_all_los (map, x, y);
1273		1152	}
1274	}	1153	}
1275		1154
1276	/*	1155	/*
1277	* merge_ob(op,top):	1156	* merge_ob(op,top):
1278	*	1157	*
1279	* This function goes through all objects below and including top, and	1158	* This function goes through all objects below and including top, and
1280	* merges op to the first matching object.	1159	* merges op to the first matching object.
1281	* If top is NULL, it is calculated.	1160	* If top is NULL, it is calculated.
1282	* Returns pointer to object if it succeded in the merge, otherwise NULL	1161	* Returns pointer to object if it succeded in the merge, otherwise NULL
1283	*/	1162	*/
1284		1163	object *
1285	object *merge_ob(object *op, object *top) {	1164	merge_ob (object *op, object *top)
		1165	{
1286	if(!op->nrof)	1166	if (!op->nrof)
1287	return 0;	1167	return 0;
1288	if(top==NULL)	1168
		1169	if (!top)
1289	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1170	for (top = op; top && top->above; top = top->above)
		1171	;
		1172
1290	for(;top!=NULL;top=top->below) {	1173	for (; top; top = top->below)
		1174	{
1291	if(top==op)	1175	if (top == op)
1292	continue;	1176	continue;
1293	if (CAN_MERGE(op,top))	1177
1294	{	1178	if (object::can_merge (op, top))
		1179	{
1295	top->nrof+=op->nrof;	1180	top->nrof += op->nrof;
		1181
1296	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1182	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1297	op->weight = 0; /* Don't want any adjustements now */	1183	op->weight = 0; /* Don't want any adjustements now */
1298	remove_ob(op);	1184	op->destroy ();
1299	free_object(op);
1300	return top;	1185	return top;
1301	}	1186	}
1302	}	1187	}
		1188
1303	return NULL;	1189	return 0;
1304	}	1190	}
1305		1191
		1192	void
		1193	object::expand_tail ()
		1194	{
		1195	if (more)
		1196	return;
		1197
		1198	object *prev = this;
		1199
		1200	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1201	{
		1202	object *op = arch_to_object (at);
		1203
		1204	op->name = name;
		1205	op->name_pl = name_pl;
		1206	op->title = title;
		1207
		1208	op->head = this;
		1209	prev->more = op;
		1210
		1211	prev = op;
		1212	}
		1213	}
		1214
1306	/*	1215	/*
1307	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1216	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1308	* job preparing multi-part monsters	1217	* job preparing multi-part monsters.
1309	*/	1218	*/
		1219	object *
1310	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1220	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1311	object* tmp;	1221	{
1312	if (op->head)	1222	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1313	op=op->head;	1223	{
1314	for (tmp=op;tmp;tmp=tmp->more){
1315	tmp->x=x+tmp->arch->clone.x;	1224	tmp->x = x + tmp->arch->x;
1316	tmp->y=y+tmp->arch->clone.y;	1225	tmp->y = y + tmp->arch->y;
1317	}	1226	}
		1227
1318	return insert_ob_in_map (op, m, originator, flag);	1228	return insert_ob_in_map (op, m, originator, flag);
1319	}	1229	}
1320		1230
1321	/*	1231	/*
1322	* insert_ob_in_map (op, map, originator, flag):	1232	* insert_ob_in_map (op, map, originator, flag):
1323	* This function inserts the object in the two-way linked list	1233	* This function inserts the object in the two-way linked list
…		…
1336	* Return value:	1246	* Return value:
1337	* new object if 'op' was merged with other object	1247	* new object if 'op' was merged with other object
1338	* NULL if 'op' was destroyed	1248	* NULL if 'op' was destroyed
1339	* just 'op' otherwise	1249	* just 'op' otherwise
1340	*/	1250	*/
1341		1251	object *
1342	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1252	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1343	{	1253	{
		1254	assert (!op->flag [FLAG_FREED]);
		1255
1344	object *tmp, *top, *floor=NULL;	1256	object *top, *floor = NULL;
1345	sint16 x,y;
1346		1257
1347	if (QUERY_FLAG (op, FLAG_FREED)) {	1258	op->remove ();
1348	LOG (llevError, "Trying to insert freed object!\n");
1349	return NULL;
1350	}
1351	if(m==NULL) {
1352	dump_object(op);
1353	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1354	return op;
1355	}
1356	if(out_of_map(m,op->x,op->y)) {
1357	dump_object(op);
1358	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);
1359	#ifdef MANY_CORES
1360	/* Better to catch this here, as otherwise the next use of this object
1361	* is likely to cause a crash. Better to find out where it is getting
1362	* improperly inserted.
1363	*/
1364	abort();
1365	#endif
1366	return op;
1367	}
1368	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1369	dump_object(op);
1370	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1371	return op;
1372	}
1373	if(op->more!=NULL) {
1374	/* The part may be on a different map. */
1375		1259
1376	object *more = op->more;
1377
1378	/* We really need the caller to normalize coordinates - if
1379	* we set the map, that doesn't work if the location is within
1380	* a map and this is straddling an edge. So only if coordinate
1381	* is clear wrong do we normalize it.
1382	*/
1383	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {
1384	/* Debugging information so you can see the last coordinates this object had */
1385	more->ox = more->x;
1386	more->oy = more->y;
1387	more->map = get_map_from_coord(m, &more->x, &more->y);
1388	} else if (!more->map) {
1389	/* For backwards compatibility - when not dealing with tiled maps,
1390	* more->map should always point to the parent.
1391	*/
1392	more->map = m;
1393	}
1394
1395	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {
1396	if ( ! op->head)
1397	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
1398	return NULL;
1399	}
1400	}
1401	CLEAR_FLAG(op,FLAG_REMOVED);
1402
1403	/* Debugging information so you can see the last coordinates this object had */
1404	op->ox=op->x;
1405	op->oy=op->y;
1406
1407	/* Ideally, the caller figures this out. However, it complicates a lot	1260	/* Ideally, the caller figures this out. However, it complicates a lot
1408	* of areas of callers (eg, anything that uses find_free_spot would now	1261	* of areas of callers (eg, anything that uses find_free_spot would now
1409	* need extra work	1262	* need extra work
1410	*/	1263	*/
1411	op->map=get_map_from_coord(m, &op->x, &op->y);	1264	if (!xy_normalise (m, op->x, op->y))
1412	x = op->x;	1265	{
1413	y = op->y;	1266	op->destroy ();
		1267	return 0;
		1268	}
1414		1269
		1270	if (object *more = op->more)
		1271	if (!insert_ob_in_map (more, m, originator, flag))
		1272	return 0;
		1273
		1274	CLEAR_FLAG (op, FLAG_REMOVED);
		1275
		1276	op->map = m;
		1277	mapspace &ms = op->ms ();
		1278
1415	/* this has to be done after we translate the coordinates.	1279	/* this has to be done after we translate the coordinates.
1416	*/	1280	*/
1417	if(op->nrof && !(flag & INS_NO_MERGE)) {	1281	if (op->nrof && !(flag & INS_NO_MERGE))
1418	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1282	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1419	if (CAN_MERGE(op,tmp)) {	1283	if (object::can_merge (op, tmp))
		1284	{
1420	op->nrof+=tmp->nrof;	1285	op->nrof += tmp->nrof;
1421	remove_ob(tmp);	1286	tmp->destroy (1);
1422	free_object(tmp);	1287	}
		1288
		1289	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1290	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1291
		1292	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1293	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1294
		1295	if (flag & INS_BELOW_ORIGINATOR)
		1296	{
		1297	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1298	{
		1299	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1300	abort ();
		1301	}
		1302
		1303	op->above = originator;
		1304	op->below = originator->below;
		1305
		1306	if (op->below)
		1307	op->below->above = op;
		1308	else
		1309	ms.bot = op;
		1310
		1311	/* since *below* originator, no need to update top */
		1312	originator->below = op;
		1313	}
		1314	else
		1315	{
		1316	top = ms.bot;
		1317
		1318	/* If there are other objects, then */
		1319	if (top)
		1320	{
		1321	object *last = 0;
		1322
		1323	/*
		1324	* If there are multiple objects on this space, we do some trickier handling.
		1325	* We've already dealt with merging if appropriate.
		1326	* Generally, we want to put the new object on top. But if
		1327	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1328	* floor, we want to insert above that and no further.
		1329	* Also, if there are spell objects on this space, we stop processing
		1330	* once we get to them. This reduces the need to traverse over all of
		1331	* them when adding another one - this saves quite a bit of cpu time
		1332	* when lots of spells are cast in one area. Currently, it is presumed
		1333	* that flying non pickable objects are spell objects.
		1334	*/
		1335	for (top = ms.bot; top; top = top->above)
		1336	{
		1337	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1338	floor = top;
		1339
		1340	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1341	{
		1342	/* We insert above top, so we want this object below this */
		1343	top = top->below;
		1344	break;
		1345	}
		1346
		1347	last = top;
1423	}	1348	}
1424	}
1425		1349
1426	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1350	/* Don't want top to be NULL, so set it to the last valid object */
1427	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1351	top = last;
1428	if (!QUERY_FLAG(op, FLAG_ALIVE))
1429	CLEAR_FLAG(op, FLAG_NO_STEAL);
1430		1352
1431	if (flag & INS_BELOW_ORIGINATOR) {	1353	/* We let update_position deal with figuring out what the space
1432	if (originator->map != op->map || originator->x != op->x ||	1354	* looks like instead of lots of conditions here.
1433	originator->y != op->y) {	1355	* makes things faster, and effectively the same result.
1434	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1435	abort();
1436	}
1437	op->above = originator;
1438	op->below = originator->below;
1439	if (op->below) op->below->above = op;
1440	else SET_MAP_OB(op->map, op->x, op->y, op);
1441	/* since *below* originator, no need to update top */
1442	originator->below = op;
1443	} else {
1444	/* If there are other objects, then */
1445	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1446	object *last=NULL;
1447	/*	1356	*/
1448	* If there are multiple objects on this space, we do some trickier handling.	1357
1449	* We've already dealt with merging if appropriate.	1358	/* Have object 'fall below' other objects that block view.
1450	* Generally, we want to put the new object on top. But if	1359	* Unless those objects are exits.
1451	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1360	* If INS_ON_TOP is used, don't do this processing
1452	* floor, we want to insert above that and no further.	1361	* Need to find the object that in fact blocks view, otherwise
1453	* Also, if there are spell objects on this space, we stop processing	1362	* stacking is a bit odd.
1454	* once we get to them. This reduces the need to traverse over all of	1363	*/
1455	* them when adding another one - this saves quite a bit of cpu time	1364	if (!(flag & INS_ON_TOP)
1456	* when lots of spells are cast in one area. Currently, it is presumed	1365	&& ms.flags () & P_BLOCKSVIEW
1457	* that flying non pickable objects are spell objects.	1366	&& (op->face && !faces [op->face].visibility))
		1367	{
		1368	for (last = top; last != floor; last = last->below)
		1369	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1370	break;
		1371
		1372	/* Check to see if we found the object that blocks view,
		1373	* and make sure we have a below pointer for it so that
		1374	* we can get inserted below this one, which requires we
		1375	* set top to the object below us.
1458	*/	1376	*/
1459		1377	if (last && last->below && last != floor)
1460	while (top != NULL) {
1461	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1462	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1463	if (QUERY_FLAG(top, FLAG_NO_PICK)
1464	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1465	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1466	{
1467	/* We insert above top, so we want this object below this */
1468	top=top->below;
1469	break;
1470	}
1471	last = top;
1472	top = top->above;	1378	top = last->below;
1473	}	1379	}
1474	/* Don't want top to be NULL, so set it to the last valid object */
1475	top = last;
1476
1477	/* We let update_position deal with figuring out what the space
1478	* looks like instead of lots of conditions here.
1479	* makes things faster, and effectively the same result.
1480	*/
1481
1482	/* Have object 'fall below' other objects that block view.
1483	* Unless those objects are exits, type 66
1484	* If INS_ON_TOP is used, don't do this processing
1485	* Need to find the object that in fact blocks view, otherwise
1486	* stacking is a bit odd.
1487	*/
1488	if (!(flag & INS_ON_TOP) &&
1489	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1490	(op->face && !op->face->visibility)) {
1491	for (last=top; last != floor; last=last->below)
1492	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1493	/* Check to see if we found the object that blocks view,
1494	* and make sure we have a below pointer for it so that
1495	* we can get inserted below this one, which requires we
1496	* set top to the object below us.
1497	*/
1498	if (last && last->below && last != floor) top=last->below;
1499	}
1500	} /* If objects on this space */	1380	} /* If objects on this space */
1501	if (flag & INS_MAP_LOAD)	1381
1502	top = GET_MAP_TOP(op->map,op->x,op->y);
1503	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1382	if (flag & INS_ABOVE_FLOOR_ONLY)
		1383	top = floor;
1504		1384
1505	/* Top is the object that our object (op) is going to get inserted above.	1385	/* Top is the object that our object (op) is going to get inserted above.
1506	*/	1386	*/
1507		1387
1508	/* First object on this space */	1388	/* First object on this space */
1509	if (!top) {	1389	if (!top)
1510	op->above = GET_MAP_OB(op->map, op->x, op->y);	1390	{
		1391	op->above = ms.bot;
		1392
		1393	if (op->above)
1511	if (op->above) op->above->below = op;	1394	op->above->below = op;
		1395
1512	op->below = NULL;	1396	op->below = 0;
1513	SET_MAP_OB(op->map, op->x, op->y, op);	1397	ms.bot = op;
		1398	}
		1399	else
1514	} else { /* get inserted into the stack above top */	1400	{ /* get inserted into the stack above top */
1515	op->above = top->above;	1401	op->above = top->above;
		1402
		1403	if (op->above)
1516	if (op->above) op->above->below = op;	1404	op->above->below = op;
		1405
1517	op->below = top;	1406	op->below = top;
1518	top->above = op;	1407	top->above = op;
1519	}	1408	}
		1409
1520	if (op->above==NULL)	1410	if (!op->above)
1521	SET_MAP_TOP(op->map,op->x, op->y, op);	1411	ms.top = op;
1522	} /* else not INS_BELOW_ORIGINATOR */	1412	} /* else not INS_BELOW_ORIGINATOR */
1523		1413
1524	if(op->type==PLAYER)	1414	if (op->type == PLAYER)
		1415	{
1525	op->contr->do_los=1;	1416	op->contr->do_los = 1;
		1417	++op->map->players;
		1418	op->map->touch ();
		1419	}
1526		1420
1527	/* If we have a floor, we know the player, if any, will be above	1421	op->map->dirty = true;
1528	* it, so save a few ticks and start from there.
1529	*/
1530	if (!(flag & INS_MAP_LOAD))
1531	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1532	if (tmp->type == PLAYER)
1533	tmp->contr->socket.update_look=1;
1534	}
1535		1422
		1423	if (object *pl = ms.player ())
		1424	pl->contr->ns->floorbox_update ();
		1425
1536	/* If this object glows, it may affect lighting conditions that are	1426	/* If this object glows, it may affect lighting conditions that are
1537	* visible to others on this map. But update_all_los is really	1427	* visible to others on this map. But update_all_los is really
1538	* an inefficient way to do this, as it means los for all players	1428	* an inefficient way to do this, as it means los for all players
1539	* on the map will get recalculated. The players could very well	1429	* on the map will get recalculated. The players could very well
1540	* be far away from this change and not affected in any way -	1430	* be far away from this change and not affected in any way -
1541	* this should get redone to only look for players within range,	1431	* this should get redone to only look for players within range,
1542	* or just updating the P_NEED_UPDATE for spaces within this area	1432	* or just updating the P_UPTODATE for spaces within this area
1543	* of effect may be sufficient.	1433	* of effect may be sufficient.
1544	*/	1434	*/
1545	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1435	if (op->map->darkness && (op->glow_radius != 0))
1546	update_all_los(op->map, op->x, op->y);	1436	update_all_los (op->map, op->x, op->y);
1547		1437
1548
1549	/* updates flags (blocked, alive, no magic, etc) for this map space */	1438	/* updates flags (blocked, alive, no magic, etc) for this map space */
1550	update_object(op,UP_OBJ_INSERT);	1439	update_object (op, UP_OBJ_INSERT);
1551		1440
		1441	INVOKE_OBJECT (INSERT, op);
1552		1442
1553	/* Don't know if moving this to the end will break anything. However,	1443	/* Don't know if moving this to the end will break anything. However,
1554	* we want to have update_look set above before calling this.	1444	* we want to have floorbox_update called before calling this.
1555	*	1445	*
1556	* check_move_on() must be after this because code called from	1446	* check_move_on() must be after this because code called from
1557	* check_move_on() depends on correct map flags (so functions like	1447	* check_move_on() depends on correct map flags (so functions like
1558	* blocked() and wall() work properly), and these flags are updated by	1448	* blocked() and wall() work properly), and these flags are updated by
1559	* update_object().	1449	* update_object().
1560	*/	1450	*/
1561		1451
1562	/* if this is not the head or flag has been passed, don't check walk on status */	1452	/* if this is not the head or flag has been passed, don't check walk on status */
1563
1564	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1453	if (!(flag & INS_NO_WALK_ON) && op->head_ () == op)
		1454	{
1565	if (check_move_on(op, originator))	1455	if (check_move_on (op, originator))
1566	return NULL;	1456	return 0;
1567		1457
1568	/* If we are a multi part object, lets work our way through the check	1458	/* If we are a multi part object, lets work our way through the check
1569	* walk on's.	1459	* walk on's.
1570	*/	1460	*/
1571	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1461	for (object *tmp = op->more; tmp; tmp = tmp->more)
1572	if (check_move_on (tmp, originator))	1462	if (check_move_on (tmp, originator))
1573	return NULL;	1463	return 0;
1574	}	1464	}
		1465
1575	return op;	1466	return op;
1576	}	1467	}
1577		1468
1578	/* this function inserts an object in the map, but if it	1469	/* this function inserts an object in the map, but if it
1579	* finds an object of its own type, it'll remove that one first.	1470	* finds an object of its own type, it'll remove that one first.
1580	* op is the object to insert it under: supplies x and the map.	1471	* op is the object to insert it under: supplies x and the map.
1581	*/	1472	*/
		1473	void
1582	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1474	replace_insert_ob_in_map (const char *arch_string, object *op)
1583	object *tmp;	1475	{
1584	object *tmp1;
1585
1586	/* first search for itself and remove any old instances */	1476	/* first search for itself and remove any old instances */
1587		1477
1588	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1478	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1589	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1479	if (!strcmp (tmp->arch->archname, arch_string)) /* same archetype */
1590	remove_ob(tmp);	1480	tmp->destroy (1);
1591	free_object(tmp);
1592	}
1593	}
1594		1481
1595	tmp1=arch_to_object(find_archetype(arch_string));	1482	object *tmp = arch_to_object (archetype::find (arch_string));
1596		1483
1597		1484	tmp->x = op->x;
1598	tmp1->x = op->x; tmp1->y = op->y;	1485	tmp->y = op->y;
		1486
1599	insert_ob_in_map(tmp1,op->map,op,0);	1487	insert_ob_in_map (tmp, op->map, op, 0);
1600	}	1488	}
1601		1489
1602	/*	1490	object *
1603	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1491	object::insert_at (object *where, object *originator, int flags)
1604	* is returned contains nr objects, and the remaining parts contains	1492	{
1605	* the rest (or is removed and freed if that number is 0).	1493	if (where->env)
1606	* On failure, NULL is returned, and the reason put into the	1494	return where->env->insert (this);
1607	* global static errmsg array.	1495	else
1608	*/	1496	return where->map->insert (this, where->x, where->y, originator, flags);
		1497	}
1609		1498
1610	object *get_split_ob(object *orig_ob, uint32 nr) {	1499	// find player who can see this object
1611	object *newob;	1500	object *
1612	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1501	object::visible_to () const
1613		1502	{
1614	if(orig_ob->nrof<nr) {	1503	if (!flag [FLAG_REMOVED])
1615	sprintf(errmsg,"There are only %d %ss.",
1616	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1617	return NULL;
1618	}	1504	{
1619	newob = object_create_clone(orig_ob);	1505	// see if we are in a container of sorts
1620	if((orig_ob->nrof-=nr)<1) {	1506	if (env)
1621	if ( ! is_removed)
1622	remove_ob(orig_ob);
1623	free_object2(orig_ob, 1);
1624	}
1625	else if ( ! is_removed) {
1626	if(orig_ob->env!=NULL)
1627	sub_weight (orig_ob->env,orig_ob->weight*nr);
1628	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1629	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1630	LOG(llevDebug,
1631	"Error, Tried to split object whose map is not in memory.\n");
1632	return NULL;
1633	}	1507	{
1634	}	1508	// the player inventory itself is always visible
1635	newob->nrof=nr;	1509	if (env->type == PLAYER)
		1510	return env;
1636		1511
1637	return newob;	1512	// else a player could have our env open
1638	}	1513	object *envest = env->outer_env ();
1639		1514
		1515	// the player itself is always on a map, so we will find him here
		1516	// even if our inv is in a player.
		1517	if (envest->is_on_map ())
		1518	if (object *pl = envest->ms ().player ())
		1519	if (pl->container == env)
		1520	return pl;
		1521	}
		1522	else
		1523	{
		1524	// maybe there is a player standing on the same mapspace
		1525	// this will catch the case where "this" is a player
		1526	if (object *pl = ms ().player ())
		1527	return pl;
		1528	}
		1529	}
		1530
		1531	return 0;
		1532	}
		1533
1640	/*	1534	/*
1641	* decrease_ob_nr(object, number) decreases a specified number from	1535	* decrease(object, number) decreases a specified number from
1642	* the amount of an object. If the amount reaches 0, the object	1536	* the amount of an object. If the amount reaches 0, the object
1643	* is subsequently removed and freed.	1537	* is subsequently removed and freed.
1644	*	1538	*
1645	* Return value: 'op' if something is left, NULL if the amount reached 0	1539	* Return value: 'op' if something is left, NULL if the amount reached 0
1646	*/	1540	*/
1647		1541	bool
1648	object *decrease_ob_nr (object *op, uint32 i)	1542	object::decrease (sint32 nr)
1649	{	1543	{
1650	object *tmp;	1544	if (!nr)
1651	player *pl;	1545	return true;
1652		1546
1653	if (i == 0) /* objects with op->nrof require this check */	1547	nr = min (nr, nrof);
		1548
		1549	nrof -= nr;
		1550
		1551	if (nrof)
		1552	{
		1553	adjust_weight (env, -weight * nr); // carrying == 0
		1554
		1555	if (object *pl = visible_to ())
		1556	esrv_update_item (UPD_NROF, pl, this);
		1557
		1558	return true;
		1559	}
		1560	else
		1561	{
		1562	destroy (1);
		1563	return false;
		1564	}
		1565	}
		1566
		1567	/*
		1568	* split(ob,nr) splits up ob into two parts. The part which
		1569	* is returned contains nr objects, and the remaining parts contains
		1570	* the rest (or is removed and returned if that number is 0).
		1571	* On failure, NULL is returned.
		1572	*/
		1573	object *
		1574	object::split (sint32 nr)
		1575	{
		1576	int have = number_of ();
		1577
		1578	if (have < nr)
		1579	return 0;
		1580	else if (have == nr)
		1581	{
		1582	remove ();
		1583	return this;
		1584	}
		1585	else
		1586	{
		1587	decrease (nr);
		1588
		1589	object *op = object_create_clone (this);
		1590	op->nrof = nr;
1654	return op;	1591	return op;
1655
1656	if (i > op->nrof)
1657	i = op->nrof;
1658
1659	if (QUERY_FLAG (op, FLAG_REMOVED))
1660	{	1592	}
1661	op->nrof -= i;	1593	}
		1594
		1595	object *
		1596	insert_ob_in_ob (object *op, object *where)
		1597	{
		1598	if (!where)
1662	}	1599	{
1663	else if (op->env != NULL)	1600	char *dump = dump_object (op);
1664	{	1601	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1665	/* is this object in the players inventory, or sub container	1602	free (dump);
1666	* therein?
1667	*/
1668	tmp = is_player_inv (op->env);
1669	/* nope. Is this a container the player has opened?
1670	* If so, set tmp to that player.
1671	* IMO, searching through all the players will mostly
1672	* likely be quicker than following op->env to the map,
1673	* and then searching the map for a player.
1674	*/
1675	if (!tmp) {
1676	for (pl=first_player; pl; pl=pl->next)
1677	if (pl->ob->container == op->env) break;
1678	if (pl) tmp=pl->ob;
1679	else tmp=NULL;
1680	}
1681
1682	if (i < op->nrof) {
1683	sub_weight (op->env, op->weight * i);
1684	op->nrof -= i;
1685	if (tmp) {
1686	esrv_send_item(tmp, op);
1687	}
1688	} else {
1689	remove_ob (op);
1690	op->nrof = 0;
1691	if (tmp) {
1692	esrv_del_item(tmp->contr, op->count);
1693	}
1694	}
1695	}
1696	else
1697	{
1698	object *above = op->above;
1699
1700	if (i < op->nrof) {
1701	op->nrof -= i;
1702	} else {
1703	remove_ob (op);
1704	op->nrof = 0;
1705	}
1706	/* Since we just removed op, op->above is null */
1707	for (tmp = above; tmp != NULL; tmp = tmp->above)
1708	if (tmp->type == PLAYER) {
1709	if (op->nrof)
1710	esrv_send_item(tmp, op);
1711	else
1712	esrv_del_item(tmp->contr, op->count);
1713	}
1714	}
1715
1716	if (op->nrof) {
1717	return op;	1603	return op;
1718	} else {	1604	}
1719	free_object (op);	1605
1720	return NULL;	1606	if (where->head_ () != where)
1721	}	1607	{
1722	}	1608	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1723		1609	where = where->head;
1724	/*
1725	* add_weight(object, weight) adds the specified weight to an object,
1726	* and also updates how much the environment(s) is/are carrying.
1727	*/
1728
1729	void add_weight (object *op, signed long weight) {
1730	while (op!=NULL) {
1731	if (op->type == CONTAINER) {
1732	weight=(signed long)(weight*(100-op->stats.Str)/100);
1733	}
1734	op->carrying+=weight;
1735	op=op->env;
1736	}	1610	}
1737	}
1738		1611
		1612	return where->insert (op);
		1613	}
		1614
1739	/*	1615	/*
1740	* insert_ob_in_ob(op,environment):	1616	* env->insert (op)
1741	* This function inserts the object op in the linked list	1617	* This function inserts the object op in the linked list
1742	* inside the object environment.	1618	* inside the object environment.
1743	*	1619	*
1744	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1745	* the inventory at the last position or next to other objects of the same
1746	* type.
1747	* Frank: Now sorted by type, archetype and magic!
1748	*
1749	* The function returns now pointer to inserted item, and return value can	1620	* The function returns now pointer to inserted item, and return value can
1750	* be != op, if items are merged. -Tero	1621	* be != op, if items are merged. -Tero
1751	*/	1622	*/
1752		1623	object *
1753	object *insert_ob_in_ob(object *op,object *where) {	1624	object::insert (object *op)
1754	object *tmp, *otmp;	1625	{
1755
1756	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1757	dump_object(op);
1758	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1759	return op;
1760	}
1761	if(where==NULL) {
1762	dump_object(op);
1763	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1764	return op;
1765	}
1766	if (where->head) {
1767	LOG(llevDebug,
1768	"Warning: Tried to insert object wrong part of multipart object.\n");
1769	where = where->head;
1770	}
1771	if (op->more) {	1626	if (op->more)
		1627	{
1772	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1628	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1773	&op->name, op->count);
1774	return op;	1629	return op;
1775	}	1630	}
1776	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1631
1777	CLEAR_FLAG(op, FLAG_REMOVED);	1632	op->remove ();
		1633
		1634	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1635
1778	if(op->nrof) {	1636	if (op->nrof)
1779	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1637	for (object *tmp = inv; tmp; tmp = tmp->below)
1780	if ( CAN_MERGE(tmp,op) ) {	1638	if (object::can_merge (tmp, op))
		1639	{
1781	/* return the original object and remove inserted object	1640	/* return the original object and remove inserted object
1782	(client needs the original object) */	1641	(client needs the original object) */
1783	tmp->nrof += op->nrof;	1642	tmp->nrof += op->nrof;
1784	/* Weight handling gets pretty funky. Since we are adding to	1643	adjust_weight (this, op->total_weight ());
1785	* tmp->nrof, we need to increase the weight.	1644
1786	*/	1645	op->destroy (1);
1787	add_weight (where, op->weight*op->nrof);
1788	SET_FLAG(op, FLAG_REMOVED);
1789	free_object(op); /* free the inserted object */
1790	op = tmp;	1646	op = tmp;
1791	remove_ob (op); /* and fix old object's links */	1647	goto inserted;
1792	CLEAR_FLAG(op, FLAG_REMOVED);
1793	break;
1794	}	1648	}
1795		1649
1796	/* I assume combined objects have no inventory	1650	op->owner = 0; // it's his/hers now. period.
1797	* We add the weight - this object could have just been removed	1651	op->map = 0;
1798	* (if it was possible to merge). calling remove_ob will subtract	1652	op->x = 0;
1799	* the weight, so we need to add it in again, since we actually do	1653	op->y = 0;
1800	* the linking below
1801	*/
1802	add_weight (where, op->weight*op->nrof);
1803	} else
1804	add_weight (where, (op->weight+op->carrying));
1805		1654
1806	otmp=is_player_inv(where);
1807	if (otmp&&otmp->contr!=NULL) {
1808	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1809	fix_player(otmp);
1810	}
1811
1812	op->map=NULL;
1813	op->env=where;
1814	op->above=NULL;	1655	op->above = 0;
1815	op->below=NULL;	1656	op->below = inv;
1816	op->x=0,op->y=0;	1657	op->env = this;
1817	op->ox=0,op->oy=0;
1818		1658
		1659	if (inv)
		1660	inv->above = op;
		1661
		1662	inv = op;
		1663
		1664	op->flag [FLAG_REMOVED] = 0;
		1665
		1666	adjust_weight (this, op->total_weight ());
		1667
		1668	inserted:
1819	/* reset the light list and los of the players on the map */	1669	/* reset the light list and los of the players on the map */
1820	if((op->glow_radius!=0)&&where->map)	1670	if (op->glow_radius && map && map->darkness)
1821	{	1671	update_all_los (map, x, y);
1822	#ifdef DEBUG_LIGHTS
1823	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",
1824	op->name);
1825	#endif /* DEBUG_LIGHTS */
1826	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1827	}
1828		1672
1829	/* Client has no idea of ordering so lets not bother ordering it here.	1673	if (object *otmp = in_player ())
1830	* It sure simplifies this function...	1674	if (otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1831	*/	1675	otmp->update_stats ();
1832	if (where->inv==NULL)	1676
1833	where->inv=op;	1677	INVOKE_OBJECT (INSERT, this);
1834	else {	1678
1835	op->below = where->inv;
1836	op->below->above = op;
1837	where->inv = op;
1838	}
1839	return op;	1679	return op;
1840	}	1680	}
1841		1681
1842	/*	1682	/*
1843	* Checks if any objects has a move_type that matches objects	1683	* Checks if any objects has a move_type that matches objects
…		…
1857	*	1697	*
1858	* MSW 2001-07-08: Check all objects on space, not just those below	1698	* MSW 2001-07-08: Check all objects on space, not just those below
1859	* object being inserted. insert_ob_in_map may not put new objects	1699	* object being inserted. insert_ob_in_map may not put new objects
1860	* on top.	1700	* on top.
1861	*/	1701	*/
1862		1702	int
1863	int check_move_on (object *op, object *originator)	1703	check_move_on (object *op, object *originator)
1864	{	1704	{
1865	object *tmp;	1705	object *tmp;
1866	tag_t tag;
1867	mapstruct *m=op->map;	1706	maptile *m = op->map;
1868	int x=op->x, y=op->y;	1707	int x = op->x, y = op->y;
		1708
1869	MoveType move_on, move_slow, move_block;	1709	MoveType move_on, move_slow, move_block;
1870		1710
1871	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1711	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1872	return 0;	1712	return 0;
1873		1713
1874	tag = op->count;
1875
1876	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1714	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1877	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1715	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1878	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1716	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1879		1717
1880	/* if nothing on this space will slow op down or be applied,	1718	/* if nothing on this space will slow op down or be applied,
1881	* no need to do checking below. have to make sure move_type	1719	* no need to do checking below. have to make sure move_type
1882	* is set, as lots of objects don't have it set - we treat that	1720	* is set, as lots of objects don't have it set - we treat that
1883	* as walking.	1721	* as walking.
1884	*/	1722	*/
1885	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1723	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1886	return 0;	1724	return 0;
1887		1725
1888	/* This is basically inverse logic of that below - basically,	1726	/* This is basically inverse logic of that below - basically,
1889	* if the object can avoid the move on or slow move, they do so,	1727	* if the object can avoid the move on or slow move, they do so,
1890	* but can't do it if the alternate movement they are using is	1728	* but can't do it if the alternate movement they are using is
1891	* blocked. Logic on this seems confusing, but does seem correct.	1729	* blocked. Logic on this seems confusing, but does seem correct.
1892	*/	1730	*/
1893	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1731	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1894	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1732	return 0;
1895		1733
1896	/* The objects have to be checked from top to bottom.	1734	/* The objects have to be checked from top to bottom.
1897	* Hence, we first go to the top:	1735	* Hence, we first go to the top:
1898	*/	1736	*/
1899		1737
1900	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1738	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1901	tmp->above!=NULL; tmp=tmp->above) {	1739	{
1902	/* Trim the search when we find the first other spell effect	1740	/* Trim the search when we find the first other spell effect
1903	* this helps performance so that if a space has 50 spell objects,	1741	* this helps performance so that if a space has 50 spell objects,
1904	* we don't need to check all of them.	1742	* we don't need to check all of them.
1905	*/	1743	*/
1906	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1744	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1745	break;
		1746	}
		1747
		1748	for (; tmp; tmp = tmp->below)
1907	}	1749	{
1908	for(;tmp!=NULL; tmp=tmp->below) {	1750	if (tmp == op)
1909	if (tmp == op) continue; /* Can't apply yourself */	1751	continue; /* Can't apply yourself */
1910		1752
1911	/* Check to see if one of the movement types should be slowed down.	1753	/* Check to see if one of the movement types should be slowed down.
1912	* Second check makes sure that the movement types not being slowed	1754	* Second check makes sure that the movement types not being slowed
1913	* (~slow_move) is not blocked on this space - just because the	1755	* (~slow_move) is not blocked on this space - just because the
1914	* space doesn't slow down swimming (for example), if you can't actually	1756	* space doesn't slow down swimming (for example), if you can't actually
1915	* swim on that space, can't use it to avoid the penalty.	1757	* swim on that space, can't use it to avoid the penalty.
1916	*/	1758	*/
1917	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1759	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1760	{
1918	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1761	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1919	((op->move_type & tmp->move_slow) &&
1920	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1762	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1763	{
1921		1764
1922	float diff;	1765	float
1923
1924	diff = tmp->move_slow_penalty*FABS(op->speed);	1766	diff = tmp->move_slow_penalty * fabs (op->speed);
		1767
1925	if (op->type == PLAYER) {	1768	if (op->type == PLAYER)
1926	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1769	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1927	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1770	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1928	diff /= 4.0;	1771	diff /= 4.0;
1929	}	1772
1930	}
1931	op->speed_left -= diff;	1773	op->speed_left -= diff;
1932	}	1774	}
1933	}	1775	}
1934		1776
1935	/* Basically same logic as above, except now for actual apply. */	1777	/* Basically same logic as above, except now for actual apply. */
1936	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1778	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1937	((op->move_type & tmp->move_on) &&
1938	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1779	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1939		1780	{
1940	move_apply(tmp, op, originator);	1781	move_apply (tmp, op, originator);
		1782
1941	if (was_destroyed (op, tag))	1783	if (op->destroyed ())
1942	return 1;	1784	return 1;
1943		1785
1944	/* what the person/creature stepped onto has moved the object	1786	/* what the person/creature stepped onto has moved the object
1945	* someplace new. Don't process any further - if we did,	1787	* someplace new. Don't process any further - if we did,
1946	* have a feeling strange problems would result.	1788	* have a feeling strange problems would result.
1947	*/	1789	*/
1948	if (op->map != m || op->x != x || op->y != y) return 0;	1790	if (op->map != m || op->x != x || op->y != y)
		1791	return 0;
1949	}	1792	}
1950	}	1793	}
		1794
1951	return 0;	1795	return 0;
1952	}	1796	}
1953		1797
1954	/*	1798	/*
1955	* present_arch(arch, map, x, y) searches for any objects with	1799	* present_arch(arch, map, x, y) searches for any objects with
1956	* a matching archetype at the given map and coordinates.	1800	* a matching archetype at the given map and coordinates.
1957	* The first matching object is returned, or NULL if none.	1801	* The first matching object is returned, or NULL if none.
1958	*/	1802	*/
1959		1803	object *
1960	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1804	present_arch (const archetype *at, maptile *m, int x, int y)
1961	object *tmp;	1805	{
1962	if(m==NULL || out_of_map(m,x,y)) {	1806	if (!m || out_of_map (m, x, y))
		1807	{
1963	LOG(llevError,"Present_arch called outside map.\n");	1808	LOG (llevError, "Present_arch called outside map.\n");
1964	return NULL;	1809	return NULL;
1965	}	1810	}
1966	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1811
		1812	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1967	if(tmp->arch == at)	1813	if (tmp->arch == at)
1968	return tmp;	1814	return tmp;
		1815
1969	return NULL;	1816	return NULL;
1970	}	1817	}
1971		1818
1972	/*	1819	/*
1973	* present(type, map, x, y) searches for any objects with	1820	* present(type, map, x, y) searches for any objects with
1974	* a matching type variable at the given map and coordinates.	1821	* a matching type variable at the given map and coordinates.
1975	* The first matching object is returned, or NULL if none.	1822	* The first matching object is returned, or NULL if none.
1976	*/	1823	*/
1977		1824	object *
1978	object *present(unsigned char type,mapstruct *m, int x,int y) {	1825	present (unsigned char type, maptile *m, int x, int y)
1979	object *tmp;	1826	{
1980	if(out_of_map(m,x,y)) {	1827	if (out_of_map (m, x, y))
		1828	{
1981	LOG(llevError,"Present called outside map.\n");	1829	LOG (llevError, "Present called outside map.\n");
1982	return NULL;	1830	return NULL;
1983	}	1831	}
1984	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1832
		1833	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1985	if(tmp->type==type)	1834	if (tmp->type == type)
1986	return tmp;	1835	return tmp;
		1836
1987	return NULL;	1837	return NULL;
1988	}	1838	}
1989		1839
1990	/*	1840	/*
1991	* present_in_ob(type, object) searches for any objects with	1841	* present_in_ob(type, object) searches for any objects with
1992	* a matching type variable in the inventory of the given object.	1842	* a matching type variable in the inventory of the given object.
1993	* The first matching object is returned, or NULL if none.	1843	* The first matching object is returned, or NULL if none.
1994	*/	1844	*/
1995		1845	object *
1996	object *present_in_ob(unsigned char type, const object *op) {	1846	present_in_ob (unsigned char type, const object *op)
1997	object *tmp;	1847	{
1998	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1848	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1999	if(tmp->type==type)	1849	if (tmp->type == type)
2000	return tmp;	1850	return tmp;
		1851
2001	return NULL;	1852	return NULL;
2002	}	1853	}
2003		1854
2004	/*	1855	/*
2005	* present_in_ob (type, str, object) searches for any objects with	1856	* present_in_ob (type, str, object) searches for any objects with
…		…
2013	* str is the string to match against. Note that we match against	1864	* str is the string to match against. Note that we match against
2014	* the object name, not the archetype name. this is so that the	1865	* the object name, not the archetype name. this is so that the
2015	* spell code can use one object type (force), but change it's name	1866	* spell code can use one object type (force), but change it's name
2016	* to be unique.	1867	* to be unique.
2017	*/	1868	*/
2018		1869	object *
2019	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1870	present_in_ob_by_name (int type, const char *str, const object *op)
2020	object *tmp;	1871	{
2021
2022	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1872	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2023	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1873	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2024	return tmp;	1874	return tmp;
2025	}	1875
2026	return NULL;	1876	return 0;
2027	}	1877	}
2028		1878
2029	/*	1879	/*
2030	* present_arch_in_ob(archetype, object) searches for any objects with	1880	* present_arch_in_ob(archetype, object) searches for any objects with
2031	* a matching archetype in the inventory of the given object.	1881	* a matching archetype in the inventory of the given object.
2032	* The first matching object is returned, or NULL if none.	1882	* The first matching object is returned, or NULL if none.
2033	*/	1883	*/
2034		1884	object *
2035	object *present_arch_in_ob(const archetype *at, const object *op) {	1885	present_arch_in_ob (const archetype *at, const object *op)
2036	object *tmp;	1886	{
2037	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1887	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2038	if( tmp->arch == at)	1888	if (tmp->arch == at)
2039	return tmp;	1889	return tmp;
		1890
2040	return NULL;	1891	return NULL;
2041	}	1892	}
2042		1893
2043	/*	1894	/*
2044	* activate recursively a flag on an object inventory	1895	* activate recursively a flag on an object inventory
2045	*/	1896	*/
		1897	void
2046	void flag_inv(object*op, int flag){	1898	flag_inv (object *op, int flag)
2047	object *tmp;	1899	{
2048	if(op->inv)
2049	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1900	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1901	{
2050	SET_FLAG(tmp, flag);	1902	SET_FLAG (tmp, flag);
2051	flag_inv(tmp,flag);	1903	flag_inv (tmp, flag);
2052	}	1904	}
		1905	}
		1906
2053	}/*	1907	/*
2054	* desactivate recursively a flag on an object inventory	1908	* deactivate recursively a flag on an object inventory
2055	*/	1909	*/
		1910	void
2056	void unflag_inv(object*op, int flag){	1911	unflag_inv (object *op, int flag)
2057	object *tmp;	1912	{
2058	if(op->inv)
2059	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1913	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1914	{
2060	CLEAR_FLAG(tmp, flag);	1915	CLEAR_FLAG (tmp, flag);
2061	unflag_inv(tmp,flag);	1916	unflag_inv (tmp, flag);
2062	}	1917	}
2063	}
2064
2065	/*
2066	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2067	* all it's inventory (recursively).
2068	* If checksums are used, a player will get set_cheat called for
2069	* him/her-self and all object carried by a call to this function.
2070	*/
2071
2072	void set_cheat(object *op) {
2073	SET_FLAG(op, FLAG_WAS_WIZ);
2074	flag_inv(op, FLAG_WAS_WIZ);
2075	}	1918	}
2076		1919
2077	/*	1920	/*
2078	* find_free_spot(object, map, x, y, start, stop) will search for	1921	* find_free_spot(object, map, x, y, start, stop) will search for
2079	* a spot at the given map and coordinates which will be able to contain	1922	* a spot at the given map and coordinates which will be able to contain
…		…
2081	* to search (see the freearr_x/y[] definition).	1924	* to search (see the freearr_x/y[] definition).
2082	* It returns a random choice among the alternatives found.	1925	* It returns a random choice among the alternatives found.
2083	* start and stop are where to start relative to the free_arr array (1,9	1926	* start and stop are where to start relative to the free_arr array (1,9
2084	* does all 4 immediate directions). This returns the index into the	1927	* does all 4 immediate directions). This returns the index into the
2085	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1928	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2086	* Note - this only checks to see if there is space for the head of the
2087	* object - if it is a multispace object, this should be called for all
2088	* pieces.
2089	* Note2: This function does correctly handle tiled maps, but does not	1929	* Note: This function does correctly handle tiled maps, but does not
2090	* inform the caller. However, insert_ob_in_map will update as	1930	* inform the caller. However, insert_ob_in_map will update as
2091	* necessary, so the caller shouldn't need to do any special work.	1931	* necessary, so the caller shouldn't need to do any special work.
2092	* Note - updated to take an object instead of archetype - this is necessary	1932	* Note - updated to take an object instead of archetype - this is necessary
2093	* because arch_blocked (now ob_blocked) needs to know the movement type	1933	* because arch_blocked (now ob_blocked) needs to know the movement type
2094	* to know if the space in question will block the object. We can't use	1934	* to know if the space in question will block the object. We can't use
2095	* the archetype because that isn't correct if the monster has been	1935	* the archetype because that isn't correct if the monster has been
2096	* customized, changed states, etc.	1936	* customized, changed states, etc.
2097	*/	1937	*/
2098		1938	int
2099	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1939	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1940	{
		1941	int altern[SIZEOFFREE];
2100	int i,index=0, flag;	1942	int index = 0, flag;
2101	static int altern[SIZEOFFREE];
2102		1943
2103	for(i=start;i<stop;i++) {	1944	for (int i = start; i < stop; i++)
2104	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1945	{
2105	if(!flag)	1946	mapxy pos (m, x, y); pos.move (i);
		1947
		1948	if (!pos.normalise ())
		1949	continue;
		1950
		1951	mapspace &ms = *pos;
		1952
		1953	if (ms.flags () & P_IS_ALIVE)
		1954	continue;
		1955
		1956	/* However, often
		1957	* ob doesn't have any move type (when used to place exits)
		1958	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		1959	*/
		1960	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		1961	{
2106	altern[index++]=i;	1962	altern [index++] = i;
		1963	continue;
		1964	}
2107		1965
2108	/* Basically, if we find a wall on a space, we cut down the search size.	1966	/* Basically, if we find a wall on a space, we cut down the search size.
2109	* In this way, we won't return spaces that are on another side of a wall.	1967	* In this way, we won't return spaces that are on another side of a wall.
2110	* This mostly work, but it cuts down the search size in all directions -	1968	* This mostly work, but it cuts down the search size in all directions -
2111	* if the space being examined only has a wall to the north and empty	1969	* if the space being examined only has a wall to the north and empty
2112	* spaces in all the other directions, this will reduce the search space	1970	* spaces in all the other directions, this will reduce the search space
2113	* to only the spaces immediately surrounding the target area, and	1971	* to only the spaces immediately surrounding the target area, and
2114	* won't look 2 spaces south of the target space.	1972	* won't look 2 spaces south of the target space.
2115	*/	1973	*/
2116	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1974	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		1975	{
2117	stop=maxfree[i];	1976	stop = maxfree[i];
2118	}	1977	continue;
2119	if(!index) return -1;	1978	}
2120	return altern[RANDOM()%index];
2121	}
2122		1979
		1980	/* Note it is intentional that we check ob - the movement type of the
		1981	* head of the object should correspond for the entire object.
		1982	*/
		1983	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		1984	continue;
		1985
		1986	if (ob->blocked (m, pos.x, pos.y))
		1987	continue;
		1988
		1989	altern [index++] = i;
		1990	}
		1991
		1992	if (!index)
		1993	return -1;
		1994
		1995	return altern [rndm (index)];
		1996	}
		1997
2123	/*	1998	/*
2124	* find_first_free_spot(archetype, mapstruct, x, y) works like	1999	* find_first_free_spot(archetype, maptile, x, y) works like
2125	* find_free_spot(), but it will search max number of squares.	2000	* find_free_spot(), but it will search max number of squares.
2126	* But it will return the first available spot, not a random choice.	2001	* But it will return the first available spot, not a random choice.
2127	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2002	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2128	*/	2003	*/
2129		2004	int
2130	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2005	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2131	int i;	2006	{
2132	for(i=0;i<SIZEOFFREE;i++) {	2007	for (int i = 0; i < SIZEOFFREE; i++)
2133	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2008	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2134	return i;	2009	return i;
2135	}	2010
2136	return -1;	2011	return -1;
2137	}	2012	}
2138		2013
2139	/*	2014	/*
2140	* The function permute(arr, begin, end) randomly reorders the array	2015	* The function permute(arr, begin, end) randomly reorders the array
2141	* arr[begin..end-1].	2016	* arr[begin..end-1].
		2017	* now uses a fisher-yates shuffle, old permute was broken
2142	*/	2018	*/
		2019	static void
2143	static void permute(int *arr, int begin, int end)	2020	permute (int *arr, int begin, int end)
2144	{	2021	{
2145	int i, j, tmp, len;	2022	arr += begin;
		2023	end -= begin;
2146		2024
2147	len = end-begin;	2025	while (--end)
2148	for(i = begin; i < end; i++)	2026	swap (arr [end], arr [rndm (end + 1)]);
2149	{
2150	j = begin+RANDOM()%len;
2151
2152	tmp = arr[i];
2153	arr[i] = arr[j];
2154	arr[j] = tmp;
2155	}
2156	}	2027	}
2157		2028
2158	/* new function to make monster searching more efficient, and effective!	2029	/* new function to make monster searching more efficient, and effective!
2159	* This basically returns a randomized array (in the passed pointer) of	2030	* This basically returns a randomized array (in the passed pointer) of
2160	* the spaces to find monsters. In this way, it won't always look for	2031	* the spaces to find monsters. In this way, it won't always look for
2161	* monsters to the north first. However, the size of the array passed	2032	* monsters to the north first. However, the size of the array passed
2162	* covers all the spaces, so within that size, all the spaces within	2033	* covers all the spaces, so within that size, all the spaces within
2163	* the 3x3 area will be searched, just not in a predictable order.	2034	* the 3x3 area will be searched, just not in a predictable order.
2164	*/	2035	*/
		2036	void
2165	void get_search_arr(int *search_arr)	2037	get_search_arr (int *search_arr)
2166	{	2038	{
2167	int i;	2039	int i;
2168		2040
2169	for(i = 0; i < SIZEOFFREE; i++)	2041	for (i = 0; i < SIZEOFFREE; i++)
2170	{
2171	search_arr[i] = i;	2042	search_arr[i] = i;
2172	}
2173		2043
2174	permute(search_arr, 1, SIZEOFFREE1+1);	2044	permute (search_arr, 1, SIZEOFFREE1 + 1);
2175	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2045	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2176	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2046	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2177	}	2047	}
2178		2048
2179	/*	2049	/*
2180	* find_dir(map, x, y, exclude) will search some close squares in the	2050	* find_dir(map, x, y, exclude) will search some close squares in the
2181	* given map at the given coordinates for live objects.	2051	* given map at the given coordinates for live objects.
…		…
2186	* Perhaps incorrectly, but I'm making the assumption that exclude	2056	* Perhaps incorrectly, but I'm making the assumption that exclude
2187	* is actually want is going to try and move there. We need this info	2057	* is actually want is going to try and move there. We need this info
2188	* because we have to know what movement the thing looking to move	2058	* because we have to know what movement the thing looking to move
2189	* there is capable of.	2059	* there is capable of.
2190	*/	2060	*/
2191		2061	int
2192	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2062	find_dir (maptile *m, int x, int y, object *exclude)
		2063	{
2193	int i,max=SIZEOFFREE, mflags;	2064	int i, max = SIZEOFFREE, mflags;
		2065
2194	sint16 nx, ny;	2066	sint16 nx, ny;
2195	object *tmp;	2067	object *tmp;
2196	mapstruct *mp;	2068	maptile *mp;
		2069
2197	MoveType blocked, move_type;	2070	MoveType blocked, move_type;
2198		2071
2199	if (exclude && exclude->head) {	2072	if (exclude && exclude->head_ () != exclude)
		2073	{
2200	exclude = exclude->head;	2074	exclude = exclude->head;
2201	move_type = exclude->move_type;	2075	move_type = exclude->move_type;
2202	} else {	2076	}
		2077	else
		2078	{
2203	/* If we don't have anything, presume it can use all movement types. */	2079	/* If we don't have anything, presume it can use all movement types. */
2204	move_type=MOVE_ALL;	2080	move_type = MOVE_ALL;
		2081	}
		2082
		2083	for (i = 1; i < max; i++)
2205	}	2084	{
2206
2207	for(i=1;i<max;i++) {
2208	mp = m;	2085	mp = m;
2209	nx = x + freearr_x[i];	2086	nx = x + freearr_x[i];
2210	ny = y + freearr_y[i];	2087	ny = y + freearr_y[i];
2211		2088
2212	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2089	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2090
2213	if (mflags & P_OUT_OF_MAP) {	2091	if (mflags & P_OUT_OF_MAP)
		2092	max = maxfree[i];
		2093	else
		2094	{
		2095	mapspace &ms = mp->at (nx, ny);
		2096
		2097	blocked = ms.move_block;
		2098
		2099	if ((move_type & blocked) == move_type)
2214	max = maxfree[i];	2100	max = maxfree[i];
2215	} else {
2216	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2217
2218	if ((move_type & blocked) == move_type) {
2219	max=maxfree[i];
2220	} else if (mflags & P_IS_ALIVE) {	2101	else if (mflags & P_IS_ALIVE)
2221	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2102	{
		2103	for (tmp = ms.bot; tmp; tmp = tmp->above)
2222	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2104	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2223	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2105	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2224	break;	2106	break;
2225	}	2107
2226	}
2227	if(tmp) {	2108	if (tmp)
2228	return freedir[i];	2109	return freedir[i];
2229	}
2230	}	2110	}
2231	}	2111	}
2232	}	2112	}
		2113
2233	return 0;	2114	return 0;
2234	}	2115	}
2235		2116
2236	/*	2117	/*
2237	* distance(object 1, object 2) will return the square of the	2118	* distance(object 1, object 2) will return the square of the
2238	* distance between the two given objects.	2119	* distance between the two given objects.
2239	*/	2120	*/
2240		2121	int
2241	int distance(const object *ob1, const object *ob2) {	2122	distance (const object *ob1, const object *ob2)
2242	int i;	2123	{
2243	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2124	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2244	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2245	return i;
2246	}	2125	}
2247		2126
2248	/*	2127	/*
2249	* find_dir_2(delta-x,delta-y) will return a direction in which	2128	* find_dir_2(delta-x,delta-y) will return a direction in which
2250	* an object which has subtracted the x and y coordinates of another	2129	* an object which has subtracted the x and y coordinates of another
2251	* object, needs to travel toward it.	2130	* object, needs to travel toward it.
2252	*/	2131	*/
2253		2132	int
2254	int find_dir_2(int x, int y) {	2133	find_dir_2 (int x, int y)
		2134	{
2255	int q;	2135	int q;
2256		2136
2257	if(y)	2137	if (y)
2258	q=x*100/y;	2138	q = x * 100 / y;
2259	else if (x)	2139	else if (x)
2260	q= -300*x;	2140	q = -300 * x;
2261	else	2141	else
2262	return 0;	2142	return 0;
2263		2143
2264	if(y>0) {	2144	if (y > 0)
		2145	{
2265	if(q < -242)	2146	if (q < -242)
2266	return 3 ;	2147	return 3;
2267	if (q < -41)	2148	if (q < -41)
2268	return 2 ;	2149	return 2;
2269	if (q < 41)	2150	if (q < 41)
2270	return 1 ;	2151	return 1;
2271	if (q < 242)	2152	if (q < 242)
2272	return 8 ;	2153	return 8;
2273	return 7 ;	2154	return 7;
2274	}	2155	}
2275		2156
2276	if (q < -242)	2157	if (q < -242)
2277	return 7 ;	2158	return 7;
2278	if (q < -41)	2159	if (q < -41)
2279	return 6 ;	2160	return 6;
2280	if (q < 41)	2161	if (q < 41)
2281	return 5 ;	2162	return 5;
2282	if (q < 242)	2163	if (q < 242)
2283	return 4 ;	2164	return 4;
2284		2165
2285	return 3 ;	2166	return 3;
2286	}
2287
2288	/*
2289	* absdir(int): Returns a number between 1 and 8, which represent
2290	* the "absolute" direction of a number (it actually takes care of
2291	* "overflow" in previous calculations of a direction).
2292	*/
2293
2294	int absdir(int d) {
2295	while(d<1) d+=8;
2296	while(d>8) d-=8;
2297	return d;
2298	}	2167	}
2299		2168
2300	/*	2169	/*
2301	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2170	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2302	* between two directions (which are expected to be absolute (see absdir())	2171	* between two directions (which are expected to be absolute (see absdir())
2303	*/	2172	*/
2304		2173	int
2305	int dirdiff(int dir1, int dir2) {	2174	dirdiff (int dir1, int dir2)
		2175	{
2306	int d;	2176	int d;
		2177
2307	d = abs(dir1 - dir2);	2178	d = abs (dir1 - dir2);
2308	if(d>4)	2179	if (d > 4)
2309	d = 8 - d;	2180	d = 8 - d;
		2181
2310	return d;	2182	return d;
2311	}	2183	}
2312		2184
2313	/* peterm:	2185	/* peterm:
2314	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2186	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2317	* This basically means that if direction is 15, then it could either go	2189	* This basically means that if direction is 15, then it could either go
2318	* direction 4, 14, or 16 to get back to where we are.	2190	* direction 4, 14, or 16 to get back to where we are.
2319	* Moved from spell_util.c to object.c with the other related direction	2191	* Moved from spell_util.c to object.c with the other related direction
2320	* functions.	2192	* functions.
2321	*/	2193	*/
2322
2323	int reduction_dir[SIZEOFFREE][3] = {	2194	int reduction_dir[SIZEOFFREE][3] = {
2324	{0,0,0}, /* 0 */	2195	{0, 0, 0}, /* 0 */
2325	{0,0,0}, /* 1 */	2196	{0, 0, 0}, /* 1 */
2326	{0,0,0}, /* 2 */	2197	{0, 0, 0}, /* 2 */
2327	{0,0,0}, /* 3 */	2198	{0, 0, 0}, /* 3 */
2328	{0,0,0}, /* 4 */	2199	{0, 0, 0}, /* 4 */
2329	{0,0,0}, /* 5 */	2200	{0, 0, 0}, /* 5 */
2330	{0,0,0}, /* 6 */	2201	{0, 0, 0}, /* 6 */
2331	{0,0,0}, /* 7 */	2202	{0, 0, 0}, /* 7 */
2332	{0,0,0}, /* 8 */	2203	{0, 0, 0}, /* 8 */
2333	{8,1,2}, /* 9 */	2204	{8, 1, 2}, /* 9 */
2334	{1,2,-1}, /* 10 */	2205	{1, 2, -1}, /* 10 */
2335	{2,10,12}, /* 11 */	2206	{2, 10, 12}, /* 11 */
2336	{2,3,-1}, /* 12 */	2207	{2, 3, -1}, /* 12 */
2337	{2,3,4}, /* 13 */	2208	{2, 3, 4}, /* 13 */
2338	{3,4,-1}, /* 14 */	2209	{3, 4, -1}, /* 14 */
2339	{4,14,16}, /* 15 */	2210	{4, 14, 16}, /* 15 */
2340	{5,4,-1}, /* 16 */	2211	{5, 4, -1}, /* 16 */
2341	{4,5,6}, /* 17 */	2212	{4, 5, 6}, /* 17 */
2342	{6,5,-1}, /* 18 */	2213	{6, 5, -1}, /* 18 */
2343	{6,20,18}, /* 19 */	2214	{6, 20, 18}, /* 19 */
2344	{7,6,-1}, /* 20 */	2215	{7, 6, -1}, /* 20 */
2345	{6,7,8}, /* 21 */	2216	{6, 7, 8}, /* 21 */
2346	{7,8,-1}, /* 22 */	2217	{7, 8, -1}, /* 22 */
2347	{8,22,24}, /* 23 */	2218	{8, 22, 24}, /* 23 */
2348	{8,1,-1}, /* 24 */	2219	{8, 1, -1}, /* 24 */
2349	{24,9,10}, /* 25 */	2220	{24, 9, 10}, /* 25 */
2350	{9,10,-1}, /* 26 */	2221	{9, 10, -1}, /* 26 */
2351	{10,11,-1}, /* 27 */	2222	{10, 11, -1}, /* 27 */
2352	{27,11,29}, /* 28 */	2223	{27, 11, 29}, /* 28 */
2353	{11,12,-1}, /* 29 */	2224	{11, 12, -1}, /* 29 */
2354	{12,13,-1}, /* 30 */	2225	{12, 13, -1}, /* 30 */
2355	{12,13,14}, /* 31 */	2226	{12, 13, 14}, /* 31 */
2356	{13,14,-1}, /* 32 */	2227	{13, 14, -1}, /* 32 */
2357	{14,15,-1}, /* 33 */	2228	{14, 15, -1}, /* 33 */
2358	{33,15,35}, /* 34 */	2229	{33, 15, 35}, /* 34 */
2359	{16,15,-1}, /* 35 */	2230	{16, 15, -1}, /* 35 */
2360	{17,16,-1}, /* 36 */	2231	{17, 16, -1}, /* 36 */
2361	{18,17,16}, /* 37 */	2232	{18, 17, 16}, /* 37 */
2362	{18,17,-1}, /* 38 */	2233	{18, 17, -1}, /* 38 */
2363	{18,19,-1}, /* 39 */	2234	{18, 19, -1}, /* 39 */
2364	{41,19,39}, /* 40 */	2235	{41, 19, 39}, /* 40 */
2365	{19,20,-1}, /* 41 */	2236	{19, 20, -1}, /* 41 */
2366	{20,21,-1}, /* 42 */	2237	{20, 21, -1}, /* 42 */
2367	{20,21,22}, /* 43 */	2238	{20, 21, 22}, /* 43 */
2368	{21,22,-1}, /* 44 */	2239	{21, 22, -1}, /* 44 */
2369	{23,22,-1}, /* 45 */	2240	{23, 22, -1}, /* 45 */
2370	{45,47,23}, /* 46 */	2241	{45, 47, 23}, /* 46 */
2371	{23,24,-1}, /* 47 */	2242	{23, 24, -1}, /* 47 */
2372	{24,9,-1}}; /* 48 */	2243	{24, 9, -1}
		2244	}; /* 48 */
2373		2245
2374	/* Recursive routine to step back and see if we can	2246	/* Recursive routine to step back and see if we can
2375	* find a path to that monster that we found. If not,	2247	* find a path to that monster that we found. If not,
2376	* we don't bother going toward it. Returns 1 if we	2248	* we don't bother going toward it. Returns 1 if we
2377	* can see a direct way to get it	2249	* can see a direct way to get it
2378	* Modified to be map tile aware -.MSW	2250	* Modified to be map tile aware -.MSW
2379	*/	2251	*/
2380		2252	int
2381
2382	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2253	can_see_monsterP (maptile *m, int x, int y, int dir)
		2254	{
2383	sint16 dx, dy;	2255	sint16 dx, dy;
2384	int mflags;	2256	int mflags;
2385		2257
		2258	if (dir < 0)
2386	if(dir<0) return 0; /* exit condition: invalid direction */	2259	return 0; /* exit condition: invalid direction */
2387		2260
2388	dx = x + freearr_x[dir];	2261	dx = x + freearr_x[dir];
2389	dy = y + freearr_y[dir];	2262	dy = y + freearr_y[dir];
2390		2263
2391	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2264	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2392		2265
2393	/* This functional arguably was incorrect before - it was	2266	/* This functional arguably was incorrect before - it was
2394	* checking for P_WALL - that was basically seeing if	2267	* checking for P_WALL - that was basically seeing if
2395	* we could move to the monster - this is being more	2268	* we could move to the monster - this is being more
2396	* literal on if we can see it. To know if we can actually	2269	* literal on if we can see it. To know if we can actually
2397	* move to the monster, we'd need the monster passed in or	2270	* move to the monster, we'd need the monster passed in or
2398	* at least its move type.	2271	* at least its move type.
2399	*/	2272	*/
2400	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2273	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2274	return 0;
2401		2275
2402	/* yes, can see. */	2276	/* yes, can see. */
2403	if(dir < 9) return 1;	2277	if (dir < 9)
		2278	return 1;
		2279
2404	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2280	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2405	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2281	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2406	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2282	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2407	}	2283	}
2408		2284
2409
2410
2411	/*	2285	/*
2412	* can_pick(picker, item): finds out if an object is possible to be	2286	* can_pick(picker, item): finds out if an object is possible to be
2413	* picked up by the picker. Returnes 1 if it can be	2287	* picked up by the picker. Returnes 1 if it can be
2414	* picked up, otherwise 0.	2288	* picked up, otherwise 0.
2415	*	2289	*
2416	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2290	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2417	* core dumps if they do.	2291	* core dumps if they do.
2418	*	2292	*
2419	* Add a check so we can't pick up invisible objects (0.93.8)	2293	* Add a check so we can't pick up invisible objects (0.93.8)
2420	*/	2294	*/
2421		2295	int
2422	int can_pick(const object *who, const object *item) {	2296	can_pick (const object *who, const object *item)
		2297	{
2423	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2298	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2424	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2299	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2425	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2300	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2426	(who->type==PLAYER||item->weight<who->weight/3));
2427	}	2301	}
2428
2429		2302
2430	/*	2303	/*
2431	* create clone from object to another	2304	* create clone from object to another
2432	*/	2305	*/
		2306	object *
2433	object *object_create_clone (object *asrc) {	2307	object_create_clone (object *asrc)
		2308	{
2434	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2309	object *dst = 0, *tmp, *src, *prev, *item;
2435		2310
2436	if(!asrc) return NULL;	2311	if (!asrc)
2437	src = asrc;	2312	return 0;
2438	if(src->head)	2313
2439	src = src->head;	2314	src = asrc->head_ ();
2440		2315
2441	prev = NULL;	2316	prev = 0;
2442	for(part = src; part; part = part->more) {	2317	for (object *part = src; part; part = part->more)
2443	tmp = get_object();	2318	{
2444	copy_object(part,tmp);	2319	tmp = part->clone ();
2445	tmp->x -= src->x;	2320	tmp->x -= src->x;
2446	tmp->y -= src->y;	2321	tmp->y -= src->y;
		2322
2447	if(!part->head) {	2323	if (!part->head)
		2324	{
2448	dst = tmp;	2325	dst = tmp;
2449	tmp->head = NULL;	2326	tmp->head = 0;
		2327	}
2450	} else {	2328	else
2451	tmp->head = dst;	2329	tmp->head = dst;
2452	}	2330
2453	tmp->more = NULL;	2331	tmp->more = 0;
		2332
2454	if(prev)	2333	if (prev)
2455	prev->more = tmp;	2334	prev->more = tmp;
		2335
2456	prev = tmp;	2336	prev = tmp;
2457	}	2337	}
2458	/*** copy inventory ***/	2338
2459	for(item = src->inv; item; item = item->below) {	2339	for (item = src->inv; item; item = item->below)
2460	(void) insert_ob_in_ob(object_create_clone(item),dst);	2340	insert_ob_in_ob (object_create_clone (item), dst);
2461	}
2462		2341
2463	return dst;	2342	return dst;
2464	}
2465
2466	/* return true if the object was destroyed, 0 otherwise */
2467	int was_destroyed (const object *op, tag_t old_tag)
2468	{
2469	/* checking for FLAG_FREED isn't necessary, but makes this function more
2470	* robust */
2471	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2472	}
2473
2474	/* GROS - Creates an object using a string representing its content. */
2475	/* Basically, we save the content of the string to a temp file, then call */
2476	/* load_object on it. I admit it is a highly inefficient way to make things, */
2477	/* but it was simple to make and allows reusing the load_object function. */
2478	/* Remember not to use load_object_str in a time-critical situation. */
2479	/* Also remember that multiparts objects are not supported for now. */
2480
2481	object* load_object_str(const char *obstr)
2482	{
2483	object *op;
2484	char filename[MAX_BUF];
2485	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2486
2487	FILE *tempfile=fopen(filename,"w");
2488	if (tempfile == NULL)
2489	{
2490	LOG(llevError,"Error - Unable to access load object temp file\n");
2491	return NULL;
2492	};
2493	fprintf(tempfile,obstr);
2494	fclose(tempfile);
2495
2496	op=get_object();
2497
2498	object_thawer thawer (filename);
2499	if (thawer)
2500	load_object(thawer,op,LO_NEWFILE,0);
2501	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2502	CLEAR_FLAG(op,FLAG_REMOVED);
2503
2504	return op;
2505	}	2343	}
2506		2344
2507	/* This returns the first object in who's inventory that	2345	/* This returns the first object in who's inventory that
2508	* has the same type and subtype match.	2346	* has the same type and subtype match.
2509	* returns NULL if no match.	2347	* returns NULL if no match.
2510	*/	2348	*/
		2349	object *
2511	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2350	find_obj_by_type_subtype (const object *who, int type, int subtype)
2512	{	2351	{
2513	object *tmp;
2514
2515	for (tmp=who->inv; tmp; tmp=tmp->below)	2352	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2516	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2353	if (tmp->type == type && tmp->subtype == subtype)
		2354	return tmp;
2517		2355
2518	return NULL;	2356	return 0;
2519	}	2357	}
2520		2358
2521	/* If ob has a field named key, return the link from the list,	2359	/* If ob has a field named key, return the link from the list,
2522	* otherwise return NULL.	2360	* otherwise return NULL.
2523	*	2361	*
2524	* key must be a passed in shared string - otherwise, this won't	2362	* key must be a passed in shared string - otherwise, this won't
2525	* do the desired thing.	2363	* do the desired thing.
2526	*/	2364	*/
		2365	key_value *
2527	key_value * get_ob_key_link(const object * ob, const char * key) {	2366	get_ob_key_link (const object *ob, const char *key)
2528	key_value * link;	2367	{
2529
2530	for (link = ob->key_values; link != NULL; link = link->next) {	2368	for (key_value *link = ob->key_values; link; link = link->next)
2531	if (link->key == key) {	2369	if (link->key == key)
2532	return link;	2370	return link;
2533	}	2371
2534	}	2372	return 0;
2535		2373	}
2536	return NULL;
2537	}
2538		2374
2539	/*	2375	/*
2540	* Returns the value of op has an extra_field for key, or NULL.	2376	* Returns the value of op has an extra_field for key, or NULL.
2541	*	2377	*
2542	* The argument doesn't need to be a shared string.	2378	* The argument doesn't need to be a shared string.
2543	*	2379	*
2544	* The returned string is shared.	2380	* The returned string is shared.
2545	*/	2381	*/
		2382	const char *
2546	const char * get_ob_key_value(const object * op, const char * const key) {	2383	get_ob_key_value (const object *op, const char *const key)
		2384	{
2547	key_value * link;	2385	key_value *link;
2548	const char * canonical_key;	2386	shstr_cmp canonical_key (key);
		2387
		2388	if (!canonical_key)
2549		2389	{
2550	canonical_key = shstr::find (key);
2551
2552	if (canonical_key == NULL) {
2553	/* 1. There being a field named key on any object	2390	/* 1. There being a field named key on any object
2554	* implies there'd be a shared string to find.	2391	* implies there'd be a shared string to find.
2555	* 2. Since there isn't, no object has this field.	2392	* 2. Since there isn't, no object has this field.
2556	* 3. Therefore, *this* object doesn't have this field.	2393	* 3. Therefore, *this* object doesn't have this field.
2557	*/	2394	*/
2558	return NULL;	2395	return 0;
2559	}	2396	}
2560		2397
2561	/* This is copied from get_ob_key_link() above -	2398	/* This is copied from get_ob_key_link() above -
2562	* only 4 lines, and saves the function call overhead.	2399	* only 4 lines, and saves the function call overhead.
2563	*/	2400	*/
2564	for (link = op->key_values; link != NULL; link = link->next) {	2401	for (link = op->key_values; link; link = link->next)
2565	if (link->key == canonical_key) {	2402	if (link->key == canonical_key)
2566	return link->value;	2403	return link->value;
2567	}
2568	}
2569	return NULL;
2570	}
2571		2404
		2405	return 0;
		2406	}
2572		2407
2573	/*	2408	/*
2574	* Updates the canonical_key in op to value.	2409	* Updates the canonical_key in op to value.
2575	*	2410	*
2576	* canonical_key is a shared string (value doesn't have to be).	2411	* canonical_key is a shared string (value doesn't have to be).
…		…
2578	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2413	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2579	* keys.	2414	* keys.
2580	*	2415	*
2581	* Returns TRUE on success.	2416	* Returns TRUE on success.
2582	*/	2417	*/
		2418	int
2583	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2419	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2420	{
2584	key_value * field = NULL, *last=NULL;	2421	key_value *field = NULL, *last = NULL;
2585		2422
2586	for (field=op->key_values; field != NULL; field=field->next) {	2423	for (field = op->key_values; field != NULL; field = field->next)
		2424	{
2587	if (field->key != canonical_key) {	2425	if (field->key != canonical_key)
		2426	{
2588	last = field;	2427	last = field;
2589	continue;	2428	continue;
2590	}	2429	}
2591		2430
2592	if (value)	2431	if (value)
2593	field->value = value;	2432	field->value = value;
2594	else {	2433	else
		2434	{
2595	/* Basically, if the archetype has this key set,	2435	/* Basically, if the archetype has this key set,
2596	* we need to store the null value so when we save	2436	* we need to store the null value so when we save
2597	* it, we save the empty value so that when we load,	2437	* it, we save the empty value so that when we load,
2598	* we get this value back again.	2438	* we get this value back again.
2599	*/	2439	*/
2600	if (get_ob_key_link (&op->arch->clone, canonical_key))	2440	if (get_ob_key_link (op->arch, canonical_key))
2601	field->value = 0;	2441	field->value = 0;
		2442	else
		2443	{
		2444	if (last)
		2445	last->next = field->next;
2602	else	2446	else
2603	{
2604	if (last) last->next = field->next;
2605	else op->key_values = field->next;	2447	op->key_values = field->next;
2606		2448
2607	delete field;	2449	delete field;
2608	}	2450	}
2609	}	2451	}
2610	return TRUE;	2452	return TRUE;
2611	}	2453	}
2612	/* IF we get here, key doesn't exist */	2454	/* IF we get here, key doesn't exist */
2613		2455
2614	/* No field, we'll have to add it. */	2456	/* No field, we'll have to add it. */
2615		2457
2616	if (!add_key) {	2458	if (!add_key)
2617	return FALSE;	2459	return FALSE;
2618	}	2460
2619	/* There isn't any good reason to store a null	2461	/* There isn't any good reason to store a null
2620	* value in the key/value list. If the archetype has	2462	* value in the key/value list. If the archetype has
2621	* this key, then we should also have it, so shouldn't	2463	* this key, then we should also have it, so shouldn't
2622	* be here. If user wants to store empty strings,	2464	* be here. If user wants to store empty strings,
2623	* should pass in ""	2465	* should pass in ""
2624	*/	2466	*/
2625	if (value == NULL) return TRUE;	2467	if (value == NULL)
2626
2627	field = new key_value;
2628
2629	field->key = canonical_key;
2630	field->value = value;
2631	/* Usual prepend-addition. */
2632	field->next = op->key_values;
2633	op->key_values = field;
2634
2635	return TRUE;	2468	return TRUE;
		2469
		2470	field = new key_value;
		2471
		2472	field->key = canonical_key;
		2473	field->value = value;
		2474	/* Usual prepend-addition. */
		2475	field->next = op->key_values;
		2476	op->key_values = field;
		2477
		2478	return TRUE;
2636	}	2479	}
2637		2480
2638	/*	2481	/*
2639	* Updates the key in op to value.	2482	* Updates the key in op to value.
2640	*	2483	*
…		…
2642	* and not add new ones.	2485	* and not add new ones.
2643	* In general, should be little reason FALSE is ever passed in for add_key	2486	* In general, should be little reason FALSE is ever passed in for add_key
2644	*	2487	*
2645	* Returns TRUE on success.	2488	* Returns TRUE on success.
2646	*/	2489	*/
		2490	int
2647	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2491	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2648	{	2492	{
2649	shstr key_ (key);	2493	shstr key_ (key);
		2494
2650	return set_ob_key_value_s (op, key_, value, add_key);	2495	return set_ob_key_value_s (op, key_, value, add_key);
2651	}	2496	}
		2497
		2498	object::depth_iterator::depth_iterator (object *container)
		2499	: iterator_base (container)
		2500	{
		2501	while (item->inv)
		2502	item = item->inv;
		2503	}
		2504
		2505	void
		2506	object::depth_iterator::next ()
		2507	{
		2508	if (item->below)
		2509	{
		2510	item = item->below;
		2511
		2512	while (item->inv)
		2513	item = item->inv;
		2514	}
		2515	else
		2516	item = item->env;
		2517	}
		2518
		2519	const char *
		2520	object::flag_desc (char *desc, int len) const
		2521	{
		2522	char *p = desc;
		2523	bool first = true;
		2524
		2525	*p = 0;
		2526
		2527	for (int i = 0; i < NUM_FLAGS; i++)
		2528	{
		2529	if (len <= 10) // magic constant!
		2530	{
		2531	snprintf (p, len, ",...");
		2532	break;
		2533	}
		2534
		2535	if (flag [i])
		2536	{
		2537	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2538	len -= cnt;
		2539	p += cnt;
		2540	first = false;
		2541	}
		2542	}
		2543
		2544	return desc;
		2545	}
		2546
		2547	// return a suitable string describing an object in enough detail to find it
		2548	const char *
		2549	object::debug_desc (char *info) const
		2550	{
		2551	char flagdesc[512];
		2552	char info2[256 * 4];
		2553	char *p = info;
		2554
		2555	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2556	count,
		2557	uuid.c_str (),
		2558	&name,
		2559	title ? "\",title:\"" : "",
		2560	title ? (const char *)title : "",
		2561	flag_desc (flagdesc, 512), type);
		2562
		2563	if (!this->flag[FLAG_REMOVED] && env)
		2564	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2565
		2566	if (map)
		2567	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2568
		2569	return info;
		2570	}
		2571
		2572	const char *
		2573	object::debug_desc () const
		2574	{
		2575	static char info[3][256 * 4];
		2576	static int info_idx;
		2577
		2578	return debug_desc (info [++info_idx % 3]);
		2579	}
		2580
		2581	struct region *
		2582	object::region () const
		2583	{
		2584	return map ? map->region (x, y)
		2585	: region::default_region ();
		2586	}
		2587
		2588	const materialtype_t *
		2589	object::dominant_material () const
		2590	{
		2591	if (materialtype_t *mt = name_to_material (materialname))
		2592	return mt;
		2593
		2594	return name_to_material (shstr_unknown);
		2595	}
		2596
		2597	void
		2598	object::open_container (object *new_container)
		2599	{
		2600	if (container == new_container)
		2601	return;
		2602
		2603	if (object *old_container = container)
		2604	{
		2605	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2606	return;
		2607
		2608	#if 0
		2609	// remove the "Close old_container" object.
		2610	if (object *closer = old_container->inv)
		2611	if (closer->type == CLOSE_CON)
		2612	closer->destroy ();
		2613	#endif
		2614
		2615	old_container->flag [FLAG_APPLIED] = 0;
		2616	container = 0;
		2617
		2618	esrv_update_item (UPD_FLAGS, this, old_container);
		2619	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
		2620	play_sound (sound_find ("chest_close"));
		2621	}
		2622
		2623	if (new_container)
		2624	{
		2625	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2626	return;
		2627
		2628	// TODO: this does not seem to serve any purpose anymore?
		2629	#if 0
		2630	// insert the "Close Container" object.
		2631	if (archetype *closer = new_container->other_arch)
		2632	{
		2633	object *closer = arch_to_object (new_container->other_arch);
		2634	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2635	new_container->insert (closer);
		2636	}
		2637	#endif
		2638
		2639	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2640
		2641	new_container->flag [FLAG_APPLIED] = 1;
		2642	container = new_container;
		2643
		2644	esrv_update_item (UPD_FLAGS, this, new_container);
		2645	esrv_send_inventory (this, new_container);
		2646	play_sound (sound_find ("chest_open"));
		2647	}
		2648	}
		2649
		2650	object *
		2651	object::force_find (const shstr name)
		2652	{
		2653	/* cycle through his inventory to look for the MARK we want to
		2654	* place
		2655	*/
		2656	for (object *tmp = inv; tmp; tmp = tmp->below)
		2657	if (tmp->type == FORCE && tmp->slaying == name)
		2658	return splay (tmp);
		2659
		2660	return 0;
		2661	}
		2662
		2663	void
		2664	object::force_add (const shstr name, int duration)
		2665	{
		2666	if (object *force = force_find (name))
		2667	force->destroy ();
		2668
		2669	object *force = get_archetype (FORCE_NAME);
		2670
		2671	force->slaying = name;
		2672	force->stats.food = 1;
		2673	force->speed_left = -1.f;
		2674
		2675	force->set_speed (duration ? 1.f / duration : 0.f);
		2676	force->flag [FLAG_IS_USED_UP] = true;
		2677	force->flag [FLAG_APPLIED] = true;
		2678
		2679	insert (force);
		2680	}
		2681
		2682	void
		2683	object::play_sound (faceidx sound)
		2684	{
		2685	if (!sound)
		2686	return;
		2687
		2688	if (flag [FLAG_REMOVED])
		2689	return;
		2690
		2691	if (env)
		2692	{
		2693	if (object *pl = in_player ())
		2694	pl->contr->play_sound (sound);
		2695	}
		2696	else
		2697	map->play_sound (sound, x, y);
		2698	}
		2699

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