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Comparing deliantra/server/common/object.C (file contents):
Revision 1.2 by root, Fri Aug 25 17:11:52 2006 UTC vs.
Revision 1.325 by root, Wed Apr 14 21:36:31 2010 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 1.2 2006/08/25 17:11:52 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008,2009,2010 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 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 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 it under
13	it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
14	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
15	(at your option) any later version.	11	* 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 Affero GNU General Public License
23	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
25		21	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	* The authors can be reached via e-mail to <support@deliantra.net>
27	*/	23	*/
28		24
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>	25	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	26	#include <stdio.h>
35	#include <sys/types.h>	27	#include <sys/types.h>
36	#include <sys/uio.h>	28	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	29	#include <object.h>
39	#include <funcpoint.h>	30	#include <sproto.h>
40	#include <skills.h>
41	#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
57	void (*object_free_callback)(object *ob);	34	UUID UUID::cur;
		35	static uint64_t seq_next_save;
		36	static const uint64 UUID_GAP = 1<<19;
		37	uint32_t mapspace::smellcount = 10000;
58		38
		39	objectvec objects;
		40	activevec actives;
		41
		42	freelist_item *object::freelist;
		43	uint32_t object::object_count;
		44	uint32_t object::free_count;
		45	uint32_t object::create_count;
		46	uint32_t object::destroy_count;
		47
		48	//+GPL
		49
59	short freearr_x[SIZEOFFREE]=	50	short freearr_x[SIZEOFFREE] = {
60	{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,	51	0,
		52	0, 1, 1, 1, 0, -1, -1, -1,
		53	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
61	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	54	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		55	};
62	short freearr_y[SIZEOFFREE]=	56	short freearr_y[SIZEOFFREE] = {
63	{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,	57	0,
		58	-1, -1, 0, 1, 1, 1, 0, -1,
		59	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
64	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	60	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
65	int maxfree[SIZEOFFREE]=	61	};
66	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,
67	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};
68	int freedir[SIZEOFFREE]= {	62	int freedir[SIZEOFFREE] = {
69	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,	63	0,
70	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	1, 2, 3, 4, 5, 6, 7, 8,
		65	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		66	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		67	};
71		68
		69	static int maxfree[SIZEOFFREE] = {
		70	0,
		71	9, 10, 13, 14, 17, 18, 21, 22,
		72	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		73	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		74	};
		75
		76	static void
		77	write_uuid (uval64 skip, bool sync)
		78	{
		79	CALL_BEGIN (2);
		80	CALL_ARG_SV (newSVval64 (skip));
		81	CALL_ARG_SV (boolSV (sync));
		82	CALL_CALL ("cf::write_uuid", G_DISCARD);
		83	CALL_END;
		84	}
		85
		86	static void
		87	read_uuid ()
		88	{
		89	char filename[MAX_BUF];
		90
		91	sprintf (filename, "%s/uuid", settings.localdir);
		92
		93	seq_next_save = 0;
		94
		95	FILE *fp;
		96
		97	if (!(fp = fopen (filename, "r")))
		98	{
		99	if (errno == ENOENT)
		100	{
		101	LOG (llevInfo, "RESET uid to 1\n");
		102	UUID::cur.seq = 0;
		103	write_uuid (UUID_GAP, true);
		104	return;
		105	}
		106
		107	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		108	_exit (1);
		109	}
		110
		111	char buf [UUID::MAX_LEN];
		112	buf[0] = 0;
		113	fgets (buf, sizeof (buf), fp);
		114
		115	if (!UUID::cur.parse (buf))
		116	{
		117	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		118	_exit (1);
		119	}
		120
		121	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		122
		123	write_uuid (UUID_GAP, true);
		124	fclose (fp);
		125	}
		126
		127	UUID
		128	UUID::gen ()
		129	{
		130	UUID uid;
		131
		132	uid.seq = ++cur.seq;
		133
		134	if (expect_false (cur.seq >= seq_next_save))
		135	{
		136	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		137	write_uuid (UUID_GAP, false);
		138	}
		139
		140
		141	return uid;
		142	}
		143
		144	void
		145	UUID::init ()
		146	{
		147	read_uuid ();
		148	}
		149
		150	bool
		151	UUID::parse (const char *s)
		152	{
		153	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		154	return false;
		155
		156	seq = 0;
		157
		158	while (*s != '>')
		159	{
		160	if (*s < '0')
		161	return false;
		162
		163	// this gives nice branchless code with gcc
		164	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		165	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		166
		167	seq = (seq << 4) | digit;
		168
		169	++s;
		170	}
		171
		172	return true;
		173	}
		174
		175	char *
		176	UUID::append (char *buf) const
		177	{
		178	*buf++ = '<';
		179	*buf++ = '1';
		180	*buf++ = '.';
		181
		182	uint64_t seq = this->seq;
		183	const int bits = 64;
		184	char nz = 0;
		185	static const char tohex [] = "0123456789abcdef";
		186
		187	// assert (len >= 3 + bits / 4 + 1 + 1);
		188	for (int i = bits / 4; --i; )
		189	{
		190	uint8_t digit = seq >> (bits - 4);
		191
		192	*buf = tohex [digit];
		193	nz |= digit;
		194	buf += nz ? 1 : 0;
		195	seq <<= 4;
		196	}
		197
		198	// last digit is special - always emit
		199	uint8_t digit = seq >> (bits - 4);
		200	*buf++ = tohex [digit];
		201
		202	*buf++ = '>';
		203
		204	return buf;
		205	}
		206
		207	char *
		208	UUID::c_str () const
		209	{
		210	static char buf [MAX_LEN];
		211	*append (buf) = 0;
		212	return buf;
		213	}
72		214
73	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	215	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		216	static bool
74	static int compare_ob_value_lists_one(const object * wants, const object * has) {	217	compare_ob_value_lists_one (const object *wants, const object *has)
75	key_value * wants_field;	218	{
76
77	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	219	/* n-squared behaviour (see kv_get), but I'm hoping both
78	* objects with lists are rare, and lists stay short. If not, use a	220	* objects with lists are rare, and lists stay short. If not, use a
79	* different structure or at least keep the lists sorted...	221	* different structure or at least keep the lists sorted...
80	*/	222	*/
81		223
82	/* For each field in wants, */	224	/* For each field in wants, */
83	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	225	for (key_value *kv = wants->key_values; kv; kv = kv->next)
84	key_value * has_field;	226	if (has->kv_get (kv->key) != kv->value)
85		227	return false;
86	/* Look for a field in has with the same key. */	228
87	has_field = get_ob_key_link(has, wants_field->key);
88
89	if (has_field == NULL) {
90	/* No field with that name. */
91	return FALSE;
92	}
93
94	/* Found the matching field. */
95	if (has_field->value != wants_field->value) {
96	/* Values don't match, so this half of the comparison is false. */
97	return FALSE;
98	}
99
100	/* If we get here, we found a match. Now for the next field in wants. */
101	}
102
103	/* If we get here, every field in wants has a matching field in has. */	229	/* If we get here, every field in wants has a matching field in has. */
104	return TRUE;	230	return true;
105	}	231	}
106		232
107	/* Returns TRUE if ob1 has the same key_values as ob2. */	233	/* Returns TRUE if ob1 has the same key_values as ob2. */
		234	static bool
108	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	235	compare_ob_value_lists (const object *ob1, const object *ob2)
		236	{
109	/* However, there may be fields in has which aren't partnered in wants,	237	/* However, there may be fields in has which aren't partnered in wants,
110	* so we need to run the comparison *twice*. :(	238	* so we need to run the comparison *twice*. :(
111	*/	239	*/
112	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	240	return compare_ob_value_lists_one (ob1, ob2)
		241	&& compare_ob_value_lists_one (ob2, ob1);
113	}	242	}
114		243
115	/* Function examines the 2 objects given to it, and returns true if	244	/* Function examines the 2 objects given to it, and returns true if
116	* they can be merged together.	245	* they can be merged together.
117	*	246	*
118	* Note that this function appears a lot longer than the macro it	247	* Note that this function appears a lot longer than the macro it
119	* replaces - this is mostly for clarity - a decent compiler should hopefully	248	* replaces - this is mostly for clarity - a decent compiler should hopefully
120	* reduce this to the same efficiency.	249	* reduce this to the same efficiency.
121	*	250	*
122	* Check nrof variable *before* calling CAN_MERGE()	251	* Check nrof variable *before* calling can_merge()
123	*	252	*
124	* Improvements made with merge: Better checking on potion, and also	253	* Improvements made with merge: Better checking on potion, and also
125	* check weight	254	* check weight
126	*/	255	*/
127		256	bool object::can_merge_slow (object *ob1, object *ob2)
128	int CAN_MERGE(object *ob1, object *ob2) {	257	{
129
130	/* A couple quicksanity checks */	258	/* A couple quick sanity checks */
131	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	259	if (ob1 == ob2
		260	|| ob1->type != ob2->type
		261	|| ob1->value != ob2->value
		262	|| ob1->name != ob2->name
		263	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
		264	return 0;
132		265
133	if (ob1->speed != ob2->speed) return 0;	266	/* Do not merge objects if nrof would overflow, assume nrof
		267	* is always 0 .. 2**31-1 */
		268	if (ob1->nrof > 0x7fffffff - ob2->nrof)
		269	return 0;
		270
		271	/* If the objects have been identified, set the BEEN_APPLIED flag.
		272	* This is to the comparison of the flags below will be OK. We
		273	* just can't ignore the been applied or identified flags, as they
		274	* are not equal - just if it has been identified, the been_applied
		275	* flags lose any meaning.
		276	*/
		277	if (ob1->flag [FLAG_IDENTIFIED])
		278	ob1->set_flag (FLAG_BEEN_APPLIED);
		279
		280	if (ob2->flag [FLAG_IDENTIFIED])
		281	ob2->set_flag (FLAG_BEEN_APPLIED);
		282
		283	if (ob1->arch->archname != ob2->arch->archname
		284	|| ob1->name != ob2->name
		285	|| ob1->title != ob2->title
		286	|| ob1->msg != ob2->msg
		287	|| ob1->weight != ob2->weight
		288	|| ob1->attacktype != ob2->attacktype
		289	|| ob1->magic != ob2->magic
		290	|| ob1->slaying != ob2->slaying
		291	|| ob1->skill != ob2->skill
		292	|| ob1->value != ob2->value
		293	|| ob1->animation_id != ob2->animation_id
		294	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
		295	|| ob1->client_type != ob2->client_type
		296	|| ob1->material != ob2->material
		297	|| ob1->lore != ob2->lore
		298	|| ob1->subtype != ob2->subtype
		299	|| ob1->move_type != ob2->move_type
		300	|| ob1->move_block != ob2->move_block
		301	|| ob1->move_allow != ob2->move_allow
		302	|| ob1->move_on != ob2->move_on
		303	|| ob1->move_off != ob2->move_off
		304	|| ob1->move_slow != ob2->move_slow
		305	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		306	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		307	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
		308	return 0;
		309
		310	if ((ob1->flag ^ ob2->flag)
		311	.reset (FLAG_INV_LOCKED)
		312	.reset (FLAG_REMOVED)
		313	.any ())
		314	return 0;
		315
		316	/* This is really a spellbook check - we should in general
		317	* not merge objects with real inventories, as splitting them
		318	* is hard.
		319	*/
		320	if (ob1->inv || ob2->inv)
		321	{
		322	if (!(ob1->inv && ob2->inv))
		323	return 0; /* inventories differ in length */
		324
		325	if (ob1->inv->below || ob2->inv->below)
		326	return 0; /* more than one object in inv */
		327
		328	if (!object::can_merge (ob1->inv, ob2->inv))
		329	return 0; /* inventory objects differ */
		330
		331	/* inventory ok - still need to check rest of this object to see
		332	* if it is valid.
		333	*/
		334	}
		335
		336	/* Don't merge objects that are applied. With the new 'body' code,
		337	* it is possible for most any character to have more than one of
		338	* some items equipped, and we don't want those to merge.
		339	*/
		340	if (ob1->flag [FLAG_APPLIED] || ob2->flag [FLAG_APPLIED])
		341	return 0;
		342
134	/* Note sure why the following is the case - either the object has to	343	/* Note sure why the following is the case - either the object has to
135	* be animated or have a very low speed. Is this an attempted monster	344	* be animated or have a very low speed. Is this an attempted monster
136	* check?	345	* check?
137	*/	346	*/
138	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	347	if (!ob1->flag [FLAG_ANIMATE] && ob1->has_active_speed ())
139	return 0;
140
141	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
142	* value could not be stored in a sint32 (which unfortunately sometimes is
143	* used to store nrof).
144	*/
145	if (ob1->nrof+ob2->nrof >= 1UL<<31)
146	return 0;
147
148	/* This is really a spellbook check - really, we should
149	* check all objects in the inventory.
150	*/
151	if (ob1->inv || ob2->inv) {
152	/* if one object has inventory but the other doesn't, not equiv */
153	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
154
155	/* Now check to see if the two inventory objects could merge */
156	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
157
158	/* inventory ok - still need to check rest of this object to see
159	* if it is valid.
160	*/
161	}
162
163	/* If the objects have been identified, set the BEEN_APPLIED flag.
164	* This is to the comparison of the flags below will be OK. We
165	* just can't ignore the been applied or identified flags, as they
166	* are not equal - just if it has been identified, the been_applied
167	* flags lose any meaning.
168	*/
169	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
170	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
171
172	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
173	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
174
175
176	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
177	* being locked in inventory should prevent merging.
178	* 0x4 in flags3 is CLIENT_SENT
179	*/
180	if ((ob1->arch != ob2->arch) ||
181	(ob1->flags[0] != ob2->flags[0]) ||
182	(ob1->flags[1] != ob2->flags[1]) ||
183	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
184	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
185	(ob1->name != ob2->name) ||
186	(ob1->title != ob2->title) ||
187	(ob1->msg != ob2->msg) ||
188	(ob1->weight != ob2->weight) ||
189	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
190	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
191	(ob1->attacktype != ob2->attacktype) ||
192	(ob1->magic != ob2->magic) ||
193	(ob1->slaying != ob2->slaying) ||
194	(ob1->skill != ob2->skill) ||
195	(ob1->value != ob2->value) ||
196	(ob1->animation_id != ob2->animation_id) ||
197	(ob1->client_type != ob2->client_type) ||
198	(ob1->materialname != ob2->materialname) ||
199	(ob1->lore != ob2->lore) ||
200	(ob1->subtype != ob2->subtype) ||
201	(ob1->move_type != ob2->move_type) ||
202	(ob1->move_block != ob2->move_block) ||
203	(ob1->move_allow != ob2->move_allow) ||
204	(ob1->move_on != ob2->move_on) ||
205	(ob1->move_off != ob2->move_off) ||
206	(ob1->move_slow != ob2->move_slow) ||
207	(ob1->move_slow_penalty != ob2->move_slow_penalty)
208	)
209	return 0;	348	return 0;
210		349
211	/* Don't merge objects that are applied. With the new 'body' code,
212	* it is possible for most any character to have more than one of
213	* some items equipped, and we don't want those to merge.
214	*/
215	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))
216	return 0;
217
218	switch (ob1->type) {	350	switch (ob1->type)
		351	{
219	case SCROLL:	352	case SCROLL:
220	if (ob1->level != ob2->level) return 0;	353	if (ob1->level != ob2->level)
		354	return 0;
221	break;	355	break;
222
223	}	356	}
		357
224	if (ob1->key_values != NULL || ob2->key_values != NULL) {	358	if (ob1->key_values || ob2->key_values)
		359	{
225	/* At least one of these has key_values. */	360	/* At least one of these has key_values. */
226	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {	361	if ((!ob1->key_values) != (!ob2->key_values))
227	/* One has fields, but the other one doesn't. */	362	return 0; /* One has fields, but the other one doesn't. */
		363
		364	if (!compare_ob_value_lists (ob1, ob2))
		365	return 0;
		366	}
		367
		368	if (ob1->self || ob2->self)
		369	{
		370	ob1->optimise ();
		371	ob2->optimise ();
		372
		373	if (ob1->self || ob2->self)
		374	{
		375	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		376	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		377
		378	if (k1 != k2)
228	return 0;	379	return 0;
229	} else if (!compare_ob_value_lists(ob1, ob2)) {	380
		381	if (k1 == 0)
		382	return 1;
		383
		384	if (!cfperl_can_merge (ob1, ob2))
230	return 0;	385	return 0;
231	}	386	}
232	}	387	}
233		388
234	/* Everything passes, must be OK. */	389	/* Everything passes, must be OK. */
235	return 1;	390	return 1;
236	}	391	}
237		392
		393	// find player who can see this object
		394	object *
		395	object::visible_to () const
		396	{
		397	if (client_visible () && !flag [FLAG_REMOVED])
		398	{
		399	// see if we are in a container of sorts
		400	if (env)
		401	{
		402	// the player inventory itself is always visible
		403	if (env->is_player ())
		404	return env;
		405
		406	// else a player could have our env open
		407	object *envest = env->outer_env_or_self ();
		408
		409	// the player itself is always on a map, so we will find him here
		410	// even if our inv is in a player.
		411	if (envest->is_on_map ())
		412	if (object *pl = envest->ms ().player ())
		413	if (pl->container_ () == env)
		414	return pl;
		415	}
		416	else
		417	{
		418	// maybe there is a player standing on the same mapspace
		419	// this will catch the case where "this" is a player
		420	if (object *pl = ms ().player ())
		421	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		422	|| pl->container_ () == this)
		423	return pl;
		424	}
		425	}
		426
		427	return 0;
		428	}
		429
		430	// adjust weight per container type ("of holding")
		431	static sint32
		432	weight_adjust_for (object *op, sint32 weight)
		433	{
		434	return op->type == CONTAINER
		435	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		436	: weight;
		437	}
		438
238	/*	439	/*
		440	* adjust_weight(object, weight) adds the specified weight to an object,
		441	* and also updates how much the environment(s) is/are carrying.
		442	*/
		443	static void
		444	adjust_weight (object *op, sint32 weight)
		445	{
		446	while (op)
		447	{
		448	// adjust by actual difference to account for rounding errors
		449	// i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
		450	weight = weight_adjust_for (op, op->carrying)
		451	- weight_adjust_for (op, op->carrying - weight);
		452
		453	if (!weight)
		454	return;
		455
		456	op->carrying += weight;
		457
		458	if (object *pl = op->visible_to ())
		459	if (pl != op) // player is handled lazily
		460	esrv_update_item (UPD_WEIGHT, pl, op);
		461
		462	op = op->env;
		463	}
		464	}
		465
		466	/*
239	* sum_weight() is a recursive function which calculates the weight	467	* this is a recursive function which calculates the weight
240	* an object is carrying. It goes through in figures out how much	468	* an object is carrying. It goes through op and figures out how much
241	* containers are carrying, and sums it up.	469	* containers are carrying, and sums it up.
242	*/	470	*/
243	signed long sum_weight(object *op) {	471	void
244	signed long sum;	472	object::update_weight ()
245	object *inv;	473	{
246	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	474	sint32 sum = 0;
		475
		476	for (object *op = inv; op; op = op->below)
		477	{
247	if (inv->inv)	478	if (op->inv)
248	sum_weight(inv);	479	op->update_weight ();
249	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	480
		481	sum += op->total_weight ();
250	}	482	}
251	if (op->type == CONTAINER && op->stats.Str)	483
252	sum = (sum * (100 - op->stats.Str))/100;	484	sum = weight_adjust_for (this, sum);
253	if(op->carrying != sum)	485
		486	if (sum != carrying)
		487	{
254	op->carrying = sum;	488	carrying = sum;
255	return sum;
256	}
257		489
		490	if (object *pl = visible_to ())
		491	if (pl != this) // player is handled lazily
		492	esrv_update_item (UPD_WEIGHT, pl, this);
		493	}
		494	}
		495
258	/**	496	/*
259	* Return the outermost environment object for a given object.	497	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
260	*/	498	*/
261		499	char *
262	object *object_get_env_recursive (object *op) {
263	while (op->env != NULL)
264	op = op->env;
265	return op;
266	}
267
268	/*
269	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
270	* a better check. We basically keeping traversing up until we can't
271	* or find a player.
272	*/
273
274	object *is_player_inv (object *op) {
275	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
276	if (op->env==op)
277	op->env = NULL;
278	return op;
279	}
280
281	/*
282	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
283	* Some error messages.
284	* The result of the dump is stored in the static global errmsg array.
285	*/
286
287	void dump_object2(object *op) {
288	char *cp;
289	/* object *tmp;*/
290
291	if(op->arch!=NULL) {
292	strcat(errmsg,"arch ");
293	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
294	strcat(errmsg,"\n");
295	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
296	strcat(errmsg,cp);
297	#if 0
298	/* Don't dump player diffs - they are too long, mostly meaningless, and
299	* will overflow the buffer.
300	* Changed so that we don't dump inventory either. This may
301	* also overflow the buffer.
302	*/
303	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
304	strcat(errmsg,cp);
305	for (tmp=op->inv; tmp; tmp=tmp->below)
306	dump_object2(tmp);
307	#endif
308	strcat(errmsg,"end\n");
309	} else {
310	strcat(errmsg,"Object ");
311	if (op->name==NULL) strcat(errmsg, "(null)");
312	else strcat(errmsg,op->name);
313	strcat(errmsg,"\n");
314	#if 0
315	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
316	strcat(errmsg,cp);
317	for (tmp=op->inv; tmp; tmp=tmp->below)
318	dump_object2(tmp);
319	#endif
320	strcat(errmsg,"end\n");
321	}
322	}
323
324	/*
325	* Dumps an object. Returns output in the static global errmsg array.
326	*/
327
328	void dump_object(object *op) {	500	dump_object (object *op)
329	if(op==NULL) {
330	strcpy(errmsg,"[NULL pointer]");
331	return;
332	}
333	errmsg[0]='\0';
334	dump_object2(op);
335	}
336
337	/* GROS - Dumps an object. Return the result into a string */
338	/* Note that no checking is done for the validity of the target string, so */
339	/* you need to be sure that you allocated enough space for it. */
340	void dump_me(object *op, char *outstr)
341	{	501	{
342	char *cp;	502	if (!op)
		503	return strdup ("[NULLOBJ]");
343		504
344	if(op==NULL)	505	object_freezer freezer;
345	{	506	op->write (freezer);
346	strcpy(outstr,"[NULL pointer]");	507	return freezer.as_string ();
347	return;
348	}
349	outstr[0]='\0';
350
351	if(op->arch!=NULL)
352	{
353	strcat(outstr,"arch ");
354	strcat(outstr,op->arch->name?op->arch->name:"(null)");
355	strcat(outstr,"\n");
356	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
357	strcat(outstr,cp);
358	strcat(outstr,"end\n");
359	}
360	else
361	{
362	strcat(outstr,"Object ");
363	if (op->name==NULL)
364	strcat(outstr, "(null)");
365	else
366	strcat(outstr,op->name);
367	strcat(outstr,"\n");
368	strcat(outstr,"end\n");
369	}
370	}	508	}
371		509
372	/*	510	char *
373	* This is really verbose...Can be triggered by the P key while in DM mode.	511	object::as_string ()
374	* All objects are dumped to stderr (or alternate logfile, if in server-mode)	512	{
375	*/	513	return dump_object (this);
376
377	void dump_all_objects(void) {
378	object *op;
379	for(op=objects;op!=NULL;op=op->next) {
380	dump_object(op);
381	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
382	}
383	}
384
385	/*
386	* get_nearest_part(multi-object, object 2) returns the part of the
387	* multi-object 1 which is closest to the second object.
388	* If it's not a multi-object, it is returned.
389	*/
390
391	object *get_nearest_part(object *op, const object *pl) {
392	object *tmp,*closest;
393	int last_dist,i;
394	if(op->more==NULL)
395	return op;
396	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
397	if((i=distance(tmp,pl))<last_dist)
398	closest=tmp,last_dist=i;
399	return closest;
400	}	514	}
401		515
402	/*	516	/*
403	* Returns the object which has the count-variable equal to the argument.	517	* Returns the object which has the count-variable equal to the argument.
		518	* VERRRY slow.
404	*/	519	*/
405		520	object *
406	object *find_object(tag_t i) {	521	find_object (tag_t i)
407	object *op;	522	{
408	for(op=objects;op!=NULL;op=op->next)	523	for_all_objects (op)
409	if(op->count==i)	524	if (op->count == i)
410	break;
411	return op;	525	return op;
		526
		527	return 0;
		528	}
		529
		530	/*
		531	* Returns the object which has the uuid equal to the argument.
		532	* MOAR VERRRY slow.
		533	*/
		534
		535	object *
		536	find_object_uuid (UUID i)
		537	{
		538	for_all_objects (op)
		539	if (op->uuid == i)
		540	return op;
		541
		542	return 0;
412	}	543	}
413		544
414	/*	545	/*
415	* Returns the first object which has a name equal to the argument.	546	* Returns the first object which has a name equal to the argument.
416	* Used only by the patch command, but not all that useful.	547	* Used only by the patch command, but not all that useful.
417	* Enables features like "patch <name-of-other-player> food 999"	548	* Enables features like "patch <name-of-other-player> food 999"
418	*/	549	*/
419		550	object *
420	object *find_object_name(const char *str) {	551	find_object_name (const char *str)
421	const char *name=add_string(str);	552	{
422	object *op;	553	shstr_cmp str_ (str);
423	for(op=objects;op!=NULL;op=op->next)	554
424	if(op->name==name)	555	if (str_)
425	break;	556	for_all_objects (op)
426	free_string(name);	557	if (op->name == str_)
		558	return op;
		559
427	return op;	560	return 0;
428	}	561	}
429
430	void free_all_object_data(void) {
431	#ifdef MEMORY_DEBUG
432	object *op, *next;
433
434	for (op=free_objects; op!=NULL; ) {
435	next=op->next;
436	free(op);
437	nrofallocobjects--;
438	nroffreeobjects--;
439	op=next;
440	}
441	#endif
442	LOG(llevDebug,"%d allocated objects, %d free objects, STARMAX=%d\n",
443	nrofallocobjects, nroffreeobjects,STARTMAX);
444	}
445
446	/*
447	* Returns the object which this object marks as being the owner.
448	* A id-scheme is used to avoid pointing to objects which have been
449	* freed and are now reused. If this is detected, the owner is
450	* set to NULL, and NULL is returned.
451	* Changed 2004-02-12 - if the player is setting at the play again
452	* prompt, he is removed, and we don't want to treat him as an owner of
453	* anything, so check removed flag. I don't expect that this should break
454	* anything - once an object is removed, it is basically dead anyways.
455	*/
456
457	object *get_owner(object *op) {
458	if(op->owner==NULL)
459	return NULL;
460
461	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
462	op->owner->count==op->ownercount)
463	return op->owner;
464
465	op->owner=NULL;
466	op->ownercount=0;
467	return NULL;
468	}
469
470	void clear_owner(object *op)
471	{
472	if (!op) return;
473
474	if (op->owner && op->ownercount == op->owner->count)
475	op->owner->refcount--;
476
477	op->owner = NULL;
478	op->ownercount = 0;
479	}
480
481
482		562
483	/*	563	/*
484	* Sets the owner and sets the skill and exp pointers to owner's current	564	* Sets the owner and sets the skill and exp pointers to owner's current
485	* skill and experience objects.	565	* skill and experience objects.
486	*/	566	* ACTUALLY NO! investigate! TODO
487	void set_owner (object *op, object *owner)
488	{
489	if(owner==NULL||op==NULL)
490	return;
491
492	/* next line added to allow objects which own objects */
493	/* Add a check for ownercounts in here, as I got into an endless loop
494	* with the fireball owning a poison cloud which then owned the
495	* fireball. I believe that was caused by one of the objects getting
496	* freed and then another object replacing it. Since the ownercounts
497	* didn't match, this check is valid and I believe that cause is valid.
498	*/
499	while (owner->owner && owner!=owner->owner &&
500	owner->ownercount==owner->owner->count) owner=owner->owner;
501
502	/* IF the owner still has an owner, we did not resolve to a final owner.
503	* so lets not add to that.
504	*/
505	if (owner->owner) return;
506
507	op->owner=owner;
508
509	op->ownercount=owner->count;
510	owner->refcount++;
511
512	}
513
514	/* Set the owner to clone's current owner and set the skill and experience
515	* objects to clone's objects (typically those objects that where the owner's
516	* current skill and experience objects at the time when clone's owner was
517	* set - not the owner's current skill and experience objects).
518	*
519	* Use this function if player created an object (e.g. fire bullet, swarm
520	* spell), and this object creates further objects whose kills should be
521	* accounted for the player's original skill, even if player has changed
522	* skills meanwhile.
523	*/
524	void copy_owner (object *op, object *clone)
525	{
526	object *owner = get_owner (clone);
527	if (owner == NULL) {
528	/* players don't have owners - they own themselves. Update
529	* as appropriate.
530	*/	567	*/
531	if (clone->type == PLAYER) owner=clone;	568	void
532	else return;	569	object::set_owner (object *owner)
		570	{
		571	// allow objects which own objects
		572	if (owner)
		573	while (owner->owner)
		574	owner = owner->owner;
		575
		576	if (flag [FLAG_FREED])
533	}	577	{
534	set_owner(op, owner);	578	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
		579	return;
		580	}
535		581
536	}	582	this->owner = owner;
537
538	/*
539	* Resets vital variables in an object
540	*/
541
542	void reset_object(object *op) {
543
544	op->name = NULL;
545	op->name_pl = NULL;
546	op->title = NULL;
547	op->race = NULL;
548	op->slaying = NULL;
549	op->skill = NULL;
550	op->msg = NULL;
551	op->materialname = NULL;
552	op->lore = NULL;
553	op->current_weapon_script = NULL;
554	clear_object(op);
555	}	583	}
556		584
557	/* Zero the key_values on op, decrementing the shared-string	585	/* Zero the key_values on op, decrementing the shared-string
558	* refcounts and freeing the links.	586	* refcounts and freeing the links.
559	*/	587	*/
		588	static void
560	static void free_key_values(object * op) {	589	free_key_values (object *op)
561	key_value * i;	590	{
562	key_value * next = NULL;	591	for (key_value *i = op->key_values; i; )
563		592	{
564	if (op->key_values == NULL) return;	593	key_value *next = i->next;
		594	delete i;
		595
		596	i = next;
565		597	}
566	for (i = op->key_values; i != NULL; i = next) {	598
567	/* Store next *first*. */
568	next = i->next;
569
570	if (i->key) FREE_AND_CLEAR_STR(i->key);
571	if (i->value) FREE_AND_CLEAR_STR(i->value);
572	i->next = NULL;
573	free(i);
574	}
575
576	op->key_values = NULL;	599	op->key_values = 0;
577	}	600	}
578		601
579
580	/*	602	/*
581	* clear_object() frees everything allocated by an object, and also
582	* clears all variables and flags to default settings.
583	*/
584
585	void clear_object(object *op) {
586
587	if (object_free_callback)
588	object_free_callback (op);
589
590	event *evt;
591	event *evt2;
592
593	/* redo this to be simpler/more efficient. Was also seeing
594	* crashes in the old code. Move this to the top - am
595	* seeing periodic crashes in this code, and would like to have
596	* as much info available as possible (eg, object name).
597	*/
598	for (evt = op->events; evt; evt=evt2) {
599	evt2 = evt->next;
600
601	if (evt->hook != NULL) FREE_AND_CLEAR_STR(evt->hook);
602	if (evt->plugin != NULL) FREE_AND_CLEAR_STR(evt->plugin);
603	if (evt->options != NULL) FREE_AND_CLEAR_STR(evt->options);
604
605	free(evt);
606	}
607	op->events = NULL;
608
609	free_key_values(op);
610
611	/* the memset will clear all these values for us, but we need
612	* to reduce the refcount on them.
613	*/
614	if (op->name!=NULL) FREE_AND_CLEAR_STR(op->name);
615	if (op->name_pl!=NULL) FREE_AND_CLEAR_STR(op->name_pl);
616	if (op->title != NULL) FREE_AND_CLEAR_STR(op->title);
617	if (op->race!=NULL) FREE_AND_CLEAR_STR(op->race);
618	if (op->slaying!=NULL) FREE_AND_CLEAR_STR(op->slaying);
619	if (op->skill!=NULL) FREE_AND_CLEAR_STR(op->skill);
620	if (op->msg!=NULL) FREE_AND_CLEAR_STR(op->msg);
621	if (op->lore!=NULL) FREE_AND_CLEAR_STR(op->lore);
622	if (op->materialname!= NULL) FREE_AND_CLEAR_STR(op->materialname);
623
624
625	memset((void*)op, 0, sizeof (object_special));
626	/* Below here, we clear things that are not done by the memset,
627	* or set default values that are not zero.
628	*/
629	/* This is more or less true */
630	SET_FLAG(op, FLAG_REMOVED);
631
632
633	op->contr = NULL;
634	op->below=NULL;
635	op->above=NULL;
636	op->inv=NULL;
637	op->events=NULL;
638	op->container=NULL;
639	op->env=NULL;
640	op->more=NULL;
641	op->head=NULL;
642	op->map=NULL;
643	op->refcount=0;
644	op->active_next = NULL;
645	op->active_prev = NULL;
646	/* What is not cleared is next, prev, and count */
647
648	op->expmul=1.0;
649	op->face = blank_face;
650	op->attacked_by_count = (tag_t) -1;
651	if (settings.casting_time)
652	op->casting_time = -1;
653
654	}
655
656	/*
657	* copy object first frees everything allocated by the second object,	603	* copy_to first frees everything allocated by the dst object,
658	* and then copies the contends of the first object into the second	604	* and then copies the contents of itself into the second
659	* object, allocating what needs to be allocated. Basically, any	605	* object, allocating what needs to be allocated. Basically, any
660	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	606	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
661	* if the first object is freed, the pointers in the new object	607	* if the first object is freed, the pointers in the new object
662	* will point at garbage.	608	* will point at garbage.
663	*/	609	*/
		610	void
		611	object::copy_to (object *dst)
		612	{
		613	dst->remove ();
		614	*(object_copy *)dst = *this;
		615	dst->flag [FLAG_REMOVED] = true;
664		616
665	void copy_object(object *op2, object *op) {
666	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);
667	event *evt, *evt2, *evt_new;
668
669	if (object_free_callback)
670	object_free_callback (op);
671
672	// callback registries and self are empty for copied objects
673	// this ought to change in the future
674
675	/* Decrement the refcounts, but don't bother zeroing the fields;
676	they'll be overwritten by memcpy. */
677	if(op->name!=NULL) free_string(op->name);
678	if(op->name_pl!=NULL) free_string(op->name_pl);
679	if(op->title!=NULL) free_string(op->title);
680	if(op->race!=NULL) free_string(op->race);
681	if(op->slaying!=NULL) free_string(op->slaying);
682	if(op->skill!=NULL) free_string(op->skill);
683	if(op->msg!=NULL) free_string(op->msg);
684	if(op->lore!=NULL) free_string(op->lore);
685	if(op->materialname != NULL) free_string(op->materialname);
686	if(op->custom_name != NULL) free_string(op->custom_name);
687
688	/* Basically, same code as from clear_object() */
689	for (evt = op->events; evt; evt=evt2) {
690	evt2 = evt->next;
691
692	if (evt->hook != NULL) FREE_AND_CLEAR_STR(evt->hook);
693	if (evt->plugin != NULL) FREE_AND_CLEAR_STR(evt->plugin);
694	if (evt->options != NULL) FREE_AND_CLEAR_STR(evt->options);
695
696	free(evt);
697	}
698	op->events = NULL;
699
700	free_key_values(op);
701
702	*(object_special *)op = *(object_special *)op2;
703
704	if(is_freed) SET_FLAG(op,FLAG_FREED);
705	if(is_removed) SET_FLAG(op,FLAG_REMOVED);
706	if(op->name!=NULL) add_refcount(op->name);
707	if(op->name_pl!=NULL) add_refcount(op->name_pl);
708	if(op->title!=NULL) add_refcount(op->title);
709	if(op->race!=NULL) add_refcount(op->race);
710	if(op->slaying!=NULL) add_refcount(op->slaying);
711	if(op->skill!=NULL) add_refcount(op->skill);
712	if(op->lore!=NULL) add_refcount(op->lore);
713	if(op->msg!=NULL) add_refcount(op->msg);
714	if(op->custom_name!=NULL) add_refcount(op->custom_name);
715	if (op->materialname != NULL) add_refcount(op->materialname);
716
717	if((op2->speed<0) && !editor)
718	op->speed_left=op2->speed_left-RANDOM()%200/100.0;
719
720	/* Copy over event information */
721	evt2 = NULL;
722	for (evt = op2->events; evt; evt=evt->next) {
723	evt_new = (event *) malloc(sizeof(event));
724	memcpy(evt_new, evt, sizeof(event));
725	if (evt_new->hook) add_refcount(evt_new->hook);
726	if (evt_new->plugin) add_refcount(evt_new->plugin);
727	if (evt_new->options) add_refcount(evt_new->options);
728	evt_new->next = NULL;
729
730	/* Try to be a little clever here, and store away the
731	* last event we copied, so that its simpler to update the
732	* pointer.
733	*/
734	if (evt2)
735	evt2->next = evt_new;
736	else
737	op->events = evt_new;
738
739	evt2 = evt_new;
740	}
741	/* Copy over key_values, if any. */	617	/* Copy over key_values, if any. */
742	if (op2->key_values != NULL) {	618	if (key_values)
743	key_value * tail = NULL;	619	{
744	key_value * i;	620	key_value *tail = 0;
		621	dst->key_values = 0;
745		622
746	op->key_values = NULL;	623	for (key_value *i = key_values; i; i = i->next)
		624	{
		625	key_value *new_link = new key_value;
747		626
748	for (i = op2->key_values; i != NULL; i = i->next) {
749	key_value * new_link = (key_value *) malloc(sizeof(key_value));
750
751	new_link->next = NULL;	627	new_link->next = 0;
752	new_link->key = add_refcount(i->key);	628	new_link->key = i->key;
753	if (i->value)	629	new_link->value = i->value;
754	new_link->value = add_refcount(i->value);
755	else
756	new_link->value = NULL;
757		630
758	/* Try and be clever here, too. */	631	/* Try and be clever here, too. */
759	if (op->key_values == NULL) {	632	if (!dst->key_values)
760	op->key_values = new_link;	633	{
761	tail = new_link;	634	dst->key_values = new_link;
762	} else {	635	tail = new_link;
763	tail->next = new_link;	636	}
764	tail = new_link;	637	else
		638	{
		639	tail->next = new_link;
		640	tail = new_link;
		641	}
		642	}
765	}	643	}
766	}
767	}
768		644
769	update_ob_speed(op);	645	dst->activate ();
770	}	646	}
771		647
772	/*	648	void
773	* expand_objects() allocates more objects for the list of unused objects.	649	object::instantiate ()
774	* It is called from get_object() if the unused list is empty.	650	{
775	*/	651	if (!uuid.seq) // HACK
		652	uuid = UUID::gen ();
776		653
777	void expand_objects(void) {	654	// TODO: unclean state changes, should nt be done in copy_to AND instantiate
778	int i;	655	if (flag [FLAG_RANDOM_SPEED] && speed)
779	object *obj;	656	speed_left = - speed - rndm (); // TODO animation
780	obj = (object *) CALLOC(OBJ_EXPAND,sizeof(object));	657	else
		658	speed_left = -1.;
781		659
782	if(obj==NULL)	660	/* copy the body_info to the body_used - this is only really
783	fatal(OUT_OF_MEMORY);	661	* need for monsters, but doesn't hurt to do it for everything.
784	free_objects=obj;	662	* by doing so, when a monster is created, it has good starting
785	obj[0].prev=NULL;	663	* values for the body_used info, so when items are created
786	obj[0].next= &obj[1],	664	* for it, they can be properly equipped.
787	SET_FLAG(&(obj[0]), FLAG_REMOVED);
788	SET_FLAG(&(obj[0]), FLAG_FREED);
789
790	for(i=1;i<OBJ_EXPAND-1;i++) {
791	obj[i].next= &obj[i+1],
792	obj[i].prev= &obj[i-1],
793	SET_FLAG(&(obj[i]), FLAG_REMOVED);
794	SET_FLAG(&(obj[i]), FLAG_FREED);
795	}
796	obj[OBJ_EXPAND-1].prev= &obj[OBJ_EXPAND-2],
797	obj[OBJ_EXPAND-1].next=NULL,
798	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_REMOVED);
799	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_FREED);
800
801	nrofallocobjects += OBJ_EXPAND;
802	nroffreeobjects += OBJ_EXPAND;
803	}
804
805	/*
806	* get_object() grabs an object from the list of unused objects, makes
807	* sure it is initialised, and returns it.
808	* If there are no free objects, expand_objects() is called to get more.
809	*/
810
811	object *get_object(void) {
812	object *op;
813
814	if(free_objects==NULL) {
815	expand_objects();
816	}
817	op=free_objects;
818	#ifdef MEMORY_DEBUG
819	/* The idea is hopefully by doing a realloc, the memory
820	* debugging program will now use the current stack trace to
821	* report leaks.
822	*/	665	*/
823	op = realloc(op, sizeof(object));	666	for (int i = NUM_BODY_LOCATIONS; i--; )
824	SET_FLAG(op, FLAG_REMOVED);	667	slot[i].used = slot[i].info;
825	SET_FLAG(op, FLAG_FREED);
826	#endif
827		668
828	if(!QUERY_FLAG(op,FLAG_FREED)) {	669	attachable::instantiate ();
829	LOG(llevError,"Fatal: Getting busy object.\n");	670	}
830	}	671
831	free_objects=op->next;	672	object *
832	if(free_objects!=NULL)	673	object::clone ()
833	free_objects->prev=NULL;	674	{
834	op->count= ++ob_count;	675	object *neu = create ();
835	op->name=NULL;	676	copy_to (neu);
836	op->name_pl=NULL;	677
837	op->title=NULL;	678	// TODO: unclean state changes, should not be done in clone AND instantiate
838	op->race=NULL;	679	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
839	op->slaying=NULL;	680	neu->speed_left = - neu->speed - rndm (); // TODO animation
840	op->skill = NULL;	681
841	op->lore=NULL;	682	neu->map = map; // not copied by copy_to
842	op->msg=NULL;
843	op->materialname=NULL;
844	op->next=objects;
845	op->prev=NULL;
846	op->active_next = NULL;
847	op->active_prev = NULL;
848	if(objects!=NULL)
849	objects->prev=op;
850	objects=op;
851	clear_object(op);
852	SET_FLAG(op,FLAG_REMOVED);
853	nroffreeobjects--;
854	return op;	683	return neu;
855	}	684	}
856		685
857	/*	686	/*
858	* If an object with the IS_TURNABLE() flag needs to be turned due	687	* If an object with the IS_TURNABLE() flag needs to be turned due
859	* to the closest player being on the other side, this function can	688	* to the closest player being on the other side, this function can
860	* be called to update the face variable, _and_ how it looks on the map.	689	* be called to update the face variable, _and_ how it looks on the map.
861	*/	690	*/
862		691	void
863	void update_turn_face(object *op) {	692	update_turn_face (object *op)
864	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	693	{
865	return;	694	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
		695	return;
		696
866	SET_ANIMATION(op, op->direction);	697	SET_ANIMATION (op, op->direction);
867	update_object(op,UP_OBJ_FACE);	698	update_object (op, UP_OBJ_FACE);
868	}	699	}
869		700
870	/*	701	/*
871	* Updates the speed of an object. If the speed changes from 0 to another	702	* Updates the speed of an object. If the speed changes from 0 to another
872	* value, or vice versa, then add/remove the object from the active list.	703	* value, or vice versa, then add/remove the object from the active list.
873	* This function needs to be called whenever the speed of an object changes.	704	* This function needs to be called whenever the speed of an object changes.
874	*/	705	*/
		706	void
		707	object::set_speed (float speed)
		708	{
		709	this->speed = speed;
875		710
876	void update_ob_speed(object *op) {	711	if (has_active_speed ())
877	extern int arch_init;	712	activate ();
878
879	/* No reason putting the archetypes objects on the speed list,
880	* since they never really need to be updated.
881	*/
882
883	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
884	LOG(llevError,"Object %s is freed but has speed.\n", op->name);
885	#ifdef MANY_CORES
886	abort();
887	#else
888	op->speed = 0;
889	#endif
890	}
891	if (arch_init) {
892	return;
893	}
894	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
895	/* If already on active list, don't do anything */
896	if (op->active_next || op->active_prev || op==active_objects)
897	return;
898
899	/* process_events() expects us to insert the object at the beginning
900	* of the list. */
901	op->active_next = active_objects;
902	if (op->active_next!=NULL)
903	op->active_next->active_prev = op;
904	active_objects = op;
905	}
906	else {	713	else
907	/* If not on the active list, nothing needs to be done */	714	deactivate ();
908	if (!op->active_next && !op->active_prev && op!=active_objects)
909	return;
910
911	if (op->active_prev==NULL) {
912	active_objects = op->active_next;
913	if (op->active_next!=NULL)
914	op->active_next->active_prev = NULL;
915	}
916	else {
917	op->active_prev->active_next = op->active_next;
918	if (op->active_next)
919	op->active_next->active_prev = op->active_prev;
920	}
921	op->active_next = NULL;
922	op->active_prev = NULL;
923	}
924	}	715	}
925		716
926	/* This function removes object 'op' from the list of active
927	* objects.
928	* This should only be used for style maps or other such
929	* reference maps where you don't want an object that isn't
930	* in play chewing up cpu time getting processed.
931	* The reverse of this is to call update_ob_speed, which
932	* will do the right thing based on the speed of the object.
933	*/
934	void remove_from_active_list(object *op)
935	{
936	/* If not on the active list, nothing needs to be done */
937	if (!op->active_next && !op->active_prev && op!=active_objects)
938	return;
939
940	if (op->active_prev==NULL) {
941	active_objects = op->active_next;
942	if (op->active_next!=NULL)
943	op->active_next->active_prev = NULL;
944	}
945	else {
946	op->active_prev->active_next = op->active_next;
947	if (op->active_next)
948	op->active_next->active_prev = op->active_prev;
949	}
950	op->active_next = NULL;
951	op->active_prev = NULL;
952	}
953
954	/*	717	/*
955	* update_object() updates the array which represents the map.	718	* update_object() updates the the map.
956	* It takes into account invisible objects (and represent squares covered	719	* It takes into account invisible objects (and represent squares covered
957	* by invisible objects by whatever is below them (unless it's another	720	* by invisible objects by whatever is below them (unless it's another
958	* invisible object, etc...)	721	* invisible object, etc...)
959	* If the object being updated is beneath a player, the look-window	722	* If the object being updated is beneath a player, the look-window
960	* of that player is updated (this might be a suboptimal way of	723	* of that player is updated (this might be a suboptimal way of
961	* updating that window, though, since update_object() is called _often_)	724	* updating that window, though, since update_object() is called _often_)
962	*	725	*
963	* action is a hint of what the caller believes need to be done.	726	* action is a hint of what the caller believes need to be done.
964	* For example, if the only thing that has changed is the face (due to
965	* an animation), we don't need to call update_position until that actually
966	* comes into view of a player. OTOH, many other things, like addition/removal
967	* of walls or living creatures may need us to update the flags now.
968	* current action are:	727	* current action are:
969	* UP_OBJ_INSERT: op was inserted	728	* UP_OBJ_INSERT: op was inserted
970	* UP_OBJ_REMOVE: op was removed	729	* UP_OBJ_REMOVE: op was removed
971	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	730	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
972	* as that is easier than trying to look at what may have changed.	731	* as that is easier than trying to look at what may have changed.
973	* UP_OBJ_FACE: only the objects face has changed.	732	* UP_OBJ_FACE: only the objects face has changed.
974	*/	733	*/
975		734	void
976	void update_object(object *op, int action) {	735	update_object (object *op, int action)
977	int update_now=0, flags;	736	{
978	MoveType move_on, move_off, move_block, move_slow;	737	if (!op)
979		738	{
980	if (op == NULL) {
981	/* this should never happen */	739	/* this should never happen */
982	LOG(llevDebug,"update_object() called for NULL object.\n");	740	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
983	return;	741	return;
984	}
985		742	}
986	if(op->env!=NULL) {	743
		744	if (!op->is_on_map ())
		745	{
987	/* Animation is currently handled by client, so nothing	746	/* Animation is currently handled by client, so nothing
988	* to do in this case.	747	* to do in this case.
989	*/
990	return;
991	}
992
993	/* If the map is saving, don't do anything as everything is
994	* going to get freed anyways.
995	*/	748	*/
996	if (!op->map || op->map->in_memory == MAP_SAVING) return;	749	return;
997		750	}
		751
998	/* make sure the object is within map boundaries */	752	/* make sure the object is within map boundaries */
999	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	753	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
1000	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	754	{
1001	LOG(llevError,"update_object() called for object out of map!\n");	755	LOG (llevError, "update_object() called for object out of map!\n");
1002	#ifdef MANY_CORES	756	#ifdef MANY_CORES
1003	abort();	757	abort ();
1004	#endif	758	#endif
1005	return;	759	return;
1006	}
1007		760	}
1008	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
1009	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
1010	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
1011	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
1012	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
1013	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
1014		761
		762	mapspace &m = op->ms ();
		763
		764	if (!(m.flags_ & P_UPTODATE))
		765	/* nop */;
1015	if (action == UP_OBJ_INSERT) {	766	else if (action == UP_OBJ_INSERT)
		767	{
		768	#if 0
		769	// this is likely overkill, TODO: revisit (schmorp)
1016	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	770	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
1017	update_now=1;	771	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
1018		772	|| (op->is_player () && !(m.flags_ & P_PLAYER))
1019	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	773	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
1020	update_now=1;	774	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
1021		775	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
1022	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	776	|| (m.move_on | op->move_on ) != m.move_on
1023	update_now=1;	777	|| (m.move_off | op->move_off ) != m.move_off
1024		778	|| (m.move_slow | op->move_slow) != m.move_slow
1025	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
1026	update_now=1;
1027
1028	if ((move_on | op->move_on) != move_on) update_now=1;
1029	if ((move_off | op->move_off) != move_off) update_now=1;
1030	/* This isn't perfect, but I don't expect a lot of objects to	779	/* This isn't perfect, but I don't expect a lot of objects to
1031	* to have move_allow right now.	780	* have move_allow right now.
1032	*/	781	*/
1033	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	782	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
1034	update_now=1;	783	m.invalidate ();
1035	if ((move_slow | op->move_slow) != move_slow) update_now=1;	784	#else
		785	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		786	m.invalidate ();
		787	#endif
1036	}	788	}
1037	/* if the object is being removed, we can't make intelligent	789	/* if the object is being removed, we can't make intelligent
1038	* decisions, because remove_ob can't really pass the object	790	* decisions, because remove_ob can't really pass the object
1039	* that is being removed.	791	* that is being removed.
1040	*/	792	*/
1041	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	793	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
1042	update_now=1;	794	m.invalidate ();
1043	} else if (action == UP_OBJ_FACE) {	795	else if (action == UP_OBJ_FACE)
1044	/* Nothing to do for that case */	796	/* Nothing to do for that case */ ;
1045	}
1046	else {	797	else
1047	LOG(llevError,"update_object called with invalid action: %d\n", action);	798	LOG (llevError, "update_object called with invalid action: %d\n", action);
1048	}
1049		799
1050	if (update_now) {
1051	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
1052	update_position(op->map, op->x, op->y);
1053	}
1054
1055	if(op->more!=NULL)	800	if (op->more)
1056	update_object(op->more, action);	801	update_object (op->more, action);
1057	}	802	}
1058		803
		804	object::object ()
		805	{
		806	this->set_flag (FLAG_REMOVED);
1059		807
1060	/*	808	//expmul = 1.0; declared const for the time being
1061	* free_object() frees everything allocated by an object, removes	809	face = blank_face;
1062	* it from the list of used objects, and puts it on the list of	810	material = MATERIAL_NULL;
1063	* free objects. The IS_FREED() flag is set in the object.
1064	* The object must have been removed by remove_ob() first for
1065	* this function to succeed.
1066	*
1067	* If free_inventory is set, free inventory as well. Else drop items in
1068	* inventory to the ground.
1069	*/
1070
1071	void free_object(object *ob) {
1072	free_object2(ob, 0);
1073	}	811	}
1074	void free_object2(object *ob, int free_inventory) {
1075	object *tmp,*op;
1076		812
1077	if (object_free_callback)	813	object::~object ()
1078	object_free_callback (ob);	814	{
		815	unlink ();
1079		816
1080	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	817	free_key_values (this);
1081	LOG(llevDebug,"Free object called with non removed object\n");	818	}
1082	dump_object(ob);	819
1083	#ifdef MANY_CORES	820	void object::link ()
1084	abort();	821	{
1085	#endif	822	assert (!index);//D
		823	uuid = UUID::gen ();
		824
		825	refcnt_inc ();
		826	objects.insert (this);
		827
		828	++create_count;
		829
		830	}
		831
		832	void object::unlink ()
		833	{
		834	if (!index)
		835	return;
		836
		837	++destroy_count;
		838
		839	objects.erase (this);
		840	refcnt_dec ();
		841	}
		842
		843	void
		844	object::activate ()
		845	{
		846	/* If already on active list, don't do anything */
		847	if (active)
		848	return;
		849
		850	if (has_active_speed ())
1086	}	851	{
1087	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	852	if (flag [FLAG_FREED])
1088	LOG(llevMonster,"Warning: tried to free friendly object.\n");	853	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
1089	remove_friendly_object(ob);	854
		855	actives.insert (this);
		856	}
		857	}
		858
		859	void
		860	object::activate_recursive ()
		861	{
		862	activate ();
		863
		864	for (object *op = inv; op; op = op->below)
		865	op->activate_recursive ();
		866	}
		867
		868	/* This function removes object 'op' from the list of active
		869	* objects.
		870	* This should only be used for style maps or other such
		871	* reference maps where you don't want an object that isn't
		872	* in play chewing up cpu time getting processed.
		873	* The reverse of this is to call update_ob_speed, which
		874	* will do the right thing based on the speed of the object.
		875	*/
		876	void
		877	object::deactivate ()
		878	{
		879	/* If not on the active list, nothing needs to be done */
		880	if (!active)
		881	return;
		882
		883	actives.erase (this);
		884	}
		885
		886	void
		887	object::deactivate_recursive ()
		888	{
		889	for (object *op = inv; op; op = op->below)
		890	op->deactivate_recursive ();
		891
		892	deactivate ();
		893	}
		894
		895	void
		896	object::set_flag_inv (int flag, int value)
		897	{
		898	for (object *op = inv; op; op = op->below)
1090	}	899	{
1091	if(QUERY_FLAG(ob,FLAG_FREED)) {	900	op->flag [flag] = value;
1092	dump_object(ob);	901	op->set_flag_inv (flag, value);
1093	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);
1094	return;
1095	}	902	}
1096	if(ob->more!=NULL) {	903	}
1097	free_object2(ob->more, free_inventory);	904
1098	ob->more=NULL;	905	/*
1099	}	906	* Remove and free all objects in the inventory of the given object.
1100	if (ob->inv) {	907	* object.c ?
		908	*/
		909	void
		910	object::destroy_inv (bool drop_to_ground)
		911	{
		912	// need to check first, because the checks below might segfault
		913	// as we might be on an invalid mapspace and crossfire code
		914	// is too buggy to ensure that the inventory is empty.
		915	// corollary: if you create arrows etc. with stuff in its inventory,
		916	// cf will crash below with off-map x and y
		917	if (!inv)
		918	return;
		919
1101	/* Only if the space blocks everything do we not process -	920	/* Only if the space blocks everything do we not process -
1102	* if some form of movemnt is allowed, let objects	921	* if some form of movement is allowed, let objects
1103	* drop on that space.	922	* drop on that space.
1104	*/	923	*/
1105	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	924	if (!drop_to_ground
1106	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	925	|| !map
1107	{	926	|| map->in_memory != MAP_ACTIVE
1108	op=ob->inv;	927	|| map->no_drop
1109	while(op!=NULL) {	928	|| ms ().move_block == MOVE_ALL)
1110	tmp=op->below;	929	{
1111	remove_ob(op);	930	while (inv)
1112	free_object2(op, free_inventory);	931	inv->destroy ();
1113	op=tmp;
1114	}	932	}
1115	}	933	else
1116	else { /* Put objects in inventory onto this space */	934	{ /* Put objects in inventory onto this space */
1117	op=ob->inv;	935	while (inv)
1118	while(op!=NULL) {	936	{
1119	tmp=op->below;	937	object *op = inv;
1120	remove_ob(op);	938
1121	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||	939	if (op->flag [FLAG_STARTEQUIP]
1122	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))	940	|| op->flag [FLAG_NO_DROP]
1123	free_object(op);	941	|| op->type == RUNE
1124	else {	942	|| op->type == TRAP
1125	op->x=ob->x;	943	|| op->flag [FLAG_IS_A_TEMPLATE]
1126	op->y=ob->y;	944	|| op->flag [FLAG_DESTROY_ON_DEATH])
1127	insert_ob_in_map(op,ob->map,NULL,0); /* Insert in same map as the envir */	945	op->destroy ();
1128	}	946	else
1129	op=tmp;	947	map->insert (op, x, y);
		948	}
1130	}	949	}
1131	}	950	}
1132	}
1133	/* Remove object from the active list */
1134	ob->speed = 0;
1135	update_ob_speed(ob);
1136		951
1137	SET_FLAG(ob, FLAG_FREED);	952	/*
1138	ob->count = 0;	953	* Remove and free all objects in the inventory of the given object.
1139		954	* Unlike destroy_inv, this assumes the *this is destroyed as well
1140	/* Remove this object from the list of used objects */	955	* well, so we can (and have to!) take shortcuts.
1141	if(ob->prev==NULL) {	956	*/
1142	objects=ob->next;	957	void
1143	if(objects!=NULL)	958	object::destroy_inv_fast ()
1144	objects->prev=NULL;	959	{
1145	}	960	while (object *op = inv)
1146	else {
1147	ob->prev->next=ob->next;
1148	if(ob->next!=NULL)
1149	ob->next->prev=ob->prev;
1150	}
1151
1152	if(ob->name!=NULL) FREE_AND_CLEAR_STR(ob->name);
1153	if(ob->name_pl!=NULL) FREE_AND_CLEAR_STR(ob->name_pl);
1154	if(ob->title!=NULL) FREE_AND_CLEAR_STR(ob->title);
1155	if(ob->race!=NULL) FREE_AND_CLEAR_STR(ob->race);
1156	if(ob->slaying!=NULL) FREE_AND_CLEAR_STR(ob->slaying);
1157	if(ob->skill!=NULL) FREE_AND_CLEAR_STR(ob->skill);
1158	if(ob->lore!=NULL) FREE_AND_CLEAR_STR(ob->lore);
1159	if(ob->msg!=NULL) FREE_AND_CLEAR_STR(ob->msg);
1160	if(ob->materialname!=NULL) FREE_AND_CLEAR_STR(ob->materialname);
1161
1162		961	{
1163	/* Why aren't events freed? */	962	// remove from object the fast way
1164	free_key_values(ob);	963	op->flag [FLAG_REMOVED] = true;
		964	op->env = 0;
		965	if ((inv = inv->below))
		966	inv->above = 0;
1165		967
1166	#if 0 /* MEMORY_DEBUG*/	968	// then destroy
1167	/* This is a nice idea. Unfortunately, a lot of the code in crossfire	969	op->destroy ();
1168	* presumes the freed_object will stick around for at least a little	970	}
1169	* bit
1170	*/
1171	/* this is necessary so that memory debugging programs will
1172	* be able to accurately report source of malloc. If we recycle
1173	* objects, then some other area may be doing the get_object
1174	* and not freeing it, but the original one that malloc'd the
1175	* object will get the blame.
1176	*/
1177	free(ob);
1178	#else
1179
1180	/* Now link it with the free_objects list: */
1181	ob->prev=NULL;
1182	ob->next=free_objects;
1183	if(free_objects!=NULL)
1184	free_objects->prev=ob;
1185	free_objects=ob;
1186	nroffreeobjects++;
1187	#endif
1188	}	971	}
1189		972
1190	/*	973	void
1191	* count_free() returns the number of objects on the list of free objects.	974	object::freelist_free (int count)
1192	*/	975	{
		976	while (count-- && freelist)
		977	{
		978	freelist_item *next = freelist->next;
		979	// count is being "destroyed"
1193		980
1194	int count_free(void) {	981	sfree ((char *)freelist, sizeof (object));
1195	int i=0;	982
1196	object *tmp=free_objects;	983	freelist = next;
1197	while(tmp!=NULL)	984	--free_count;
1198	tmp=tmp->next, i++;	985	}
		986	}
		987
		988	object *
		989	object::create ()
		990	{
		991	object *op;
		992
		993	if (freelist)
		994	{
		995	freelist_item li = *freelist;
		996	memset (freelist, 0, sizeof (object));
		997
		998	op = new (freelist) object;
		999	op->count = li.count;
		1000
		1001	freelist = li.next;
		1002	--free_count;
		1003	}
		1004	else
		1005	{
		1006	void *ni = salloc0<char> (sizeof (object));
		1007
		1008	op = new(ni) object;
		1009
		1010	op->count = ++object_count;
		1011	}
		1012
		1013	op->link ();
		1014
1199	return i;	1015	return op;
1200	}	1016	}
1201		1017
1202	/*	1018	void
1203	* count_used() returns the number of objects on the list of used objects.	1019	object::do_delete ()
1204	*/	1020	{
		1021	uint32_t count = this->count;
1205		1022
1206	int count_used(void) {	1023	this->~object ();
1207	int i=0;
1208	object *tmp=objects;
1209	while(tmp!=NULL)
1210	tmp=tmp->next, i++;
1211	return i;
1212	}
1213		1024
1214	/*	1025	freelist_item *li = (freelist_item *)this;
1215	* count_active() returns the number of objects on the list of active objects.	1026	li->next = freelist;
1216	*/	1027	li->count = count;
1217		1028
1218	int count_active(void) {	1029	freelist = li;
1219	int i=0;	1030	++free_count;
1220	object *tmp=active_objects;
1221	while(tmp!=NULL)
1222	tmp=tmp->active_next, i++;
1223	return i;
1224	}	1031	}
1225		1032
1226	/*	1033	static struct freed_map : maptile
1227	* sub_weight() recursively (outwards) subtracts a number from the	1034	{
1228	* weight of an object (and what is carried by it's environment(s)).	1035	freed_map ()
1229	*/	1036	{
		1037	path = "<freed objects map>";
		1038	name = "/internal/freed_objects_map";
		1039	width = 3;
		1040	height = 3;
		1041	no_drop = 1;
		1042	no_reset = 1;
1230		1043
1231	void sub_weight (object *op, signed long weight) {	1044	alloc ();
1232	while (op != NULL) {	1045	in_memory = MAP_ACTIVE;
1233	if (op->type == CONTAINER) {
1234	weight=(signed long)(weight*(100-op->stats.Str)/100);
1235	}
1236	op->carrying-=weight;
1237	op = op->env;
1238	}	1046	}
1239	}
1240		1047
1241	/* remove_ob(op):	1048	~freed_map ()
		1049	{
		1050	destroy ();
		1051	}
		1052	} freed_map; // freed objects are moved here to avoid crashes
		1053
		1054	void
		1055	object::do_destroy ()
		1056	{
		1057	if (flag [FLAG_IS_LINKED])
		1058	remove_link ();
		1059
		1060	if (flag [FLAG_FRIENDLY])
		1061	remove_friendly_object (this);
		1062
		1063	remove ();
		1064
		1065	attachable::do_destroy ();
		1066
		1067	deactivate ();
		1068	unlink ();
		1069
		1070	flag [FLAG_FREED] = 1;
		1071
		1072	// hack to ensure that freed objects still have a valid map
		1073	map = &freed_map;
		1074	x = 1;
		1075	y = 1;
		1076
		1077	if (more)
		1078	{
		1079	more->destroy ();
		1080	more = 0;
		1081	}
		1082
		1083	head = 0;
		1084
		1085	// clear those pointers that likely might cause circular references
		1086	owner = 0;
		1087	enemy = 0;
		1088	attacked_by = 0;
		1089	current_weapon = 0;
		1090	}
		1091
		1092	void
		1093	object::destroy ()
		1094	{
		1095	if (destroyed ())
		1096	return;
		1097
		1098	if (!is_head () && !head->destroyed ())
		1099	{
		1100	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1101	head->destroy ();
		1102	return;
		1103	}
		1104
		1105	destroy_inv_fast ();
		1106
		1107	if (is_head ())
		1108	if (sound_destroy)
		1109	play_sound (sound_destroy);
		1110	else if (flag [FLAG_MONSTER])
		1111	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1112
		1113	attachable::destroy ();
		1114	}
		1115
		1116	/* op->remove ():
1242	* This function removes the object op from the linked list of objects	1117	* This function removes the object op from the linked list of objects
1243	* which it is currently tied to. When this function is done, the	1118	* which it is currently tied to. When this function is done, the
1244	* object will have no environment. If the object previously had an	1119	* object will have no environment. If the object previously had an
1245	* environment, the x and y coordinates will be updated to	1120	* environment, the x and y coordinates will be updated to
1246	* the previous environment.	1121	* the previous environment.
1247	* Beware: This function is called from the editor as well!
1248	*/
1249
1250	void remove_ob(object *op) {
1251	object *tmp,*last=NULL;
1252	object *otmp;
1253	tag_t tag;
1254	int check_walk_off;
1255	mapstruct *m;
1256	sint16 x,y;
1257
1258
1259	if(QUERY_FLAG(op,FLAG_REMOVED)) {
1260	dump_object(op);
1261	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1262
1263	/* Changed it to always dump core in this case. As has been learned
1264	* in the past, trying to recover from errors almost always
1265	* make things worse, and this is a real error here - something
1266	* that should not happen.
1267	* Yes, if this was a mission critical app, trying to do something
1268	* to recover may make sense, but that is because failure of the app
1269	* may have other disastrous problems. Cf runs out of a script
1270	* so is easily enough restarted without any real problems.
1271	* MSW 2001-07-01
1272	*/	1122	*/
1273	abort();	1123	void
1274	}	1124	object::do_remove ()
1275	if(op->more!=NULL)	1125	{
1276	remove_ob(op->more);	1126	if (flag [FLAG_REMOVED])
		1127	return;
1277		1128
1278	SET_FLAG(op, FLAG_REMOVED);	1129	INVOKE_OBJECT (REMOVE, this);
1279		1130
		1131	flag [FLAG_REMOVED] = true;
		1132
		1133	if (more)
		1134	more->remove ();
		1135
1280	/*	1136	/*
1281	* In this case, the object to be removed is in someones	1137	* In this case, the object to be removed is in someones
1282	* inventory.	1138	* inventory.
1283	*/	1139	*/
1284	if(op->env!=NULL) {	1140	if (env)
1285	if(op->nrof)	1141	{
1286	sub_weight(op->env, op->weight*op->nrof);	1142	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1287	else	1143	if (object *pl = visible_to ())
1288	sub_weight(op->env, op->weight+op->carrying);	1144	esrv_del_item (pl->contr, count);
		1145	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1289		1146
1290	/* NO_FIX_PLAYER is set when a great many changes are being	1147	adjust_weight (env, -total_weight ());
1291	* made to players inventory. If set, avoiding the call
1292	* to save cpu time.
1293	*/
1294	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&
1295	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1296	fix_player(otmp);
1297		1148
1298	if(op->above!=NULL)	1149	object *pl = in_player ();
1299	op->above->below=op->below;
1300	else
1301	op->env->inv=op->below;
1302		1150
1303	if(op->below!=NULL)
1304	op->below->above=op->above;
1305
1306	/* we set up values so that it could be inserted into	1151	/* we set up values so that it could be inserted into
1307	* the map, but we don't actually do that - it is up	1152	* the map, but we don't actually do that - it is up
1308	* to the caller to decide what we want to do.	1153	* to the caller to decide what we want to do.
1309	*/
1310	op->x=op->env->x,op->y=op->env->y;
1311	op->ox=op->x,op->oy=op->y;
1312	op->map=op->env->map;
1313	op->above=NULL,op->below=NULL;
1314	op->env=NULL;
1315	return;
1316	}
1317
1318	/* If we get here, we are removing it from a map */
1319	if (op->map == NULL) return;
1320
1321	x = op->x;
1322	y = op->y;
1323	m = get_map_from_coord(op->map, &x, &y);
1324
1325	if (!m) {
1326	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1327	op->map->path, op->x, op->y);
1328	/* in old days, we used to set x and y to 0 and continue.
1329	* it seems if we get into this case, something is probablye
1330	* screwed up and should be fixed.
1331	*/
1332	abort();
1333	}
1334	if (op->map != m) {
1335	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1336	op->map->path, m->path, op->x, op->y, x, y);
1337	}
1338
1339	/* Re did the following section of code - it looks like it had
1340	* lots of logic for things we no longer care about
1341	*/	1154	*/
		1155	map = env->map;
		1156	x = env->x;
		1157	y = env->y;
1342		1158
		1159	// make sure cmov optimisation is applicable
		1160	*(above ? &above->below : &env->inv) = below;
		1161	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1162
		1163	above = 0;
		1164	below = 0;
		1165	env = 0;
		1166
		1167	if (pl && pl->is_player ())
		1168	{
		1169	if (expect_false (pl->contr->combat_ob == this))
		1170	{
		1171	pl->apply (pl->contr->combat_ob, AP_UNAPPLY);
		1172	pl->contr->combat_ob = 0;
		1173	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
		1174	}
		1175
		1176	if (expect_false (pl->contr->ranged_ob == this))
		1177	{
		1178	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY);
		1179	pl->contr->ranged_ob = 0;
		1180	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1181	}
		1182
		1183	pl->contr->queue_stats_update ();
		1184
		1185	if (expect_false (glow_radius) && pl->is_on_map ())
		1186	update_all_los (pl->map, pl->x, pl->y);
		1187	}
		1188	}
		1189	else if (map)
		1190	{
		1191	map->dirty = true;
		1192	mapspace &ms = this->ms ();
		1193
		1194	if (object *pl = ms.player ())
		1195	{
		1196	if (is_player ())
		1197	{
		1198	if (!flag [FLAG_WIZPASS])
		1199	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1200
		1201	// leaving a spot always closes any open container on the ground
		1202	if (container && !container->env)
		1203	// this causes spurious floorbox updates, but it ensures
		1204	// that the CLOSE event is being sent.
		1205	close_container ();
		1206
		1207	--map->players;
		1208	map->touch ();
		1209	}
		1210	else if (pl->container_ () == this)
		1211	{
		1212	// removing a container should close it
		1213	close_container ();
		1214	}
		1215	else
		1216	esrv_del_item (pl->contr, count);
		1217	}
		1218
1343	/* link the object above us */	1219	/* link the object above us */
1344	if (op->above)	1220	// re-link, make sure compiler can easily use cmove
1345	op->above->below=op->below;	1221	*(above ? &above->below : &ms.top) = below;
1346	else	1222	*(below ? &below->above : &ms.bot) = above;
1347	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1348
1349	/* Relink the object below us, if there is one */
1350	if(op->below) {
1351	op->below->above=op->above;
1352	} else {
1353	/* Nothing below, which means we need to relink map object for this space
1354	* use translated coordinates in case some oddness with map tiling is
1355	* evident
1356	*/
1357	if(GET_MAP_OB(m,x,y)!=op) {
1358	dump_object(op);
1359	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);
1360	dump_object(GET_MAP_OB(m,x,y));
1361	LOG(llevError,"%s\n",errmsg);
1362	}
1363	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1364	}
1365	op->above=NULL;
1366	op->below=NULL;
1367		1223
		1224	above = 0;
		1225	below = 0;
		1226
		1227	ms.invalidate ();
		1228
1368	if (op->map->in_memory == MAP_SAVING)	1229	if (map->in_memory == MAP_SAVING)
1369	return;	1230	return;
1370		1231
1371	tag = op->count;	1232	int check_walk_off = !flag [FLAG_NO_APPLY];
1372	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1373	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1374	/* No point updating the players look faces if he is the object
1375	* being removed.
1376	*/
1377		1233
1378	if(tmp->type==PLAYER && tmp!=op) {	1234	if (object *pl = ms.player ())
		1235	{
		1236	if (pl->container_ () == this)
1379	/* If a container that the player is currently using somehow gets	1237	/* If a container that the player is currently using somehow gets
1380	* removed (most likely destroyed), update the player view	1238	* removed (most likely destroyed), update the player view
1381	* appropriately.	1239	* appropriately.
1382	*/	1240	*/
1383	if (tmp->container==op) {	1241	pl->close_container ();
1384	CLEAR_FLAG(op, FLAG_APPLIED);	1242
1385	tmp->container=NULL;	1243	//TODO: the floorbox prev/next might need updating
		1244	//esrv_del_item (pl->contr, count);
		1245	//TODO: update floorbox to preserve ordering
		1246	if (pl->contr->ns)
		1247	pl->contr->ns->floorbox_update ();
		1248	}
		1249
		1250	if (check_walk_off)
		1251	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1252	{
		1253	above = tmp->above;
		1254
		1255	/* No point updating the players look faces if he is the object
		1256	* being removed.
		1257	*/
		1258
		1259	/* See if object moving off should effect something */
		1260	if ((move_type & tmp->move_off)
		1261	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
		1262	move_apply (tmp, this, 0);
		1263	}
		1264
		1265	if (affects_los ())
		1266	update_all_los (map, x, y);
1386	}	1267	}
1387	tmp->contr->socket.update_look=1;
1388	}
1389	/* See if player moving off should effect something */
1390	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1391	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1392
1393	move_apply(tmp, op, NULL);
1394	if (was_destroyed (op, tag)) {
1395	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1396	"leaving object\n", tmp->name, tmp->arch->name);
1397	}
1398	}
1399
1400	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1401
1402	if(tmp->above == tmp)
1403	tmp->above = NULL;
1404	last=tmp;
1405	}
1406	/* last == NULL of there are no objects on this space */
1407	if (last==NULL) {
1408	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1409	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1410	* those out anyways, and if there are any flags set right now, they won't
1411	* be correct anyways.
1412	*/
1413	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1414	update_position(op->map, op->x, op->y);
1415	}
1416	else
1417	update_object(last, UP_OBJ_REMOVE);
1418
1419	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1420	update_all_los(op->map, op->x, op->y);
1421
1422	}	1268	}
1423		1269
1424	/*	1270	/*
1425	* merge_ob(op,top):	1271	* merge_ob(op,top):
1426	*	1272	*
1427	* This function goes through all objects below and including top, and	1273	* This function goes through all objects below and including top, and
1428	* merges op to the first matching object.	1274	* merges op to the first matching object.
1429	* If top is NULL, it is calculated.	1275	* If top is NULL, it is calculated.
1430	* Returns pointer to object if it succeded in the merge, otherwise NULL	1276	* Returns pointer to object if it succeded in the merge, otherwise NULL
1431	*/	1277	*/
1432		1278	object *
1433	object *merge_ob(object *op, object *top) {	1279	merge_ob (object *op, object *top)
		1280	{
1434	if(!op->nrof)	1281	if (!op->nrof)
1435	return 0;	1282	return 0;
1436	if(top==NULL)	1283
		1284	if (!top)
1437	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1285	for (top = op; top && top->above; top = top->above)
		1286	;
		1287
1438	for(;top!=NULL;top=top->below) {	1288	for (; top; top = top->below)
1439	if(top==op)	1289	if (object::can_merge (op, top))
1440	continue;
1441	if (CAN_MERGE(op,top))
1442	{	1290	{
1443	top->nrof+=op->nrof;	1291	top->nrof += op->nrof;
1444	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1292
1445	op->weight = 0; /* Don't want any adjustements now */	1293	if (object *pl = top->visible_to ())
1446	remove_ob(op);	1294	esrv_update_item (UPD_NROF, pl, top);
1447	free_object(op);	1295
		1296	op->weight = 0; // cancel the addition above
		1297	op->carrying = 0; // must be 0 already
		1298
		1299	op->destroy ();
		1300
1448	return top;	1301	return top;
1449	}	1302	}
1450	}	1303
1451	return NULL;	1304	return 0;
1452	}	1305	}
1453		1306
		1307	void
		1308	object::expand_tail ()
		1309	{
		1310	if (more)
		1311	return;
		1312
		1313	object *prev = this;
		1314
		1315	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1316	{
		1317	object *op = at->instance ();
		1318
		1319	op->name = name;
		1320	op->name_pl = name_pl;
		1321	op->title = title;
		1322
		1323	op->head = this;
		1324	prev->more = op;
		1325
		1326	prev = op;
		1327	}
		1328	}
		1329
1454	/*	1330	/*
1455	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1331	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1456	* job preparing multi-part monsters	1332	* job preparing multi-part monsters.
1457	*/	1333	*/
		1334	object *
1458	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1335	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1459	object* tmp;	1336	{
1460	if (op->head)	1337	op->remove ();
1461	op=op->head;	1338
1462	for (tmp=op;tmp;tmp=tmp->more){	1339	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1340	{
1463	tmp->x=x+tmp->arch->clone.x;	1341	tmp->x = x + tmp->arch->x;
1464	tmp->y=y+tmp->arch->clone.y;	1342	tmp->y = y + tmp->arch->y;
1465	}	1343	}
		1344
1466	return insert_ob_in_map (op, m, originator, flag);	1345	return insert_ob_in_map (op, m, originator, flag);
1467	}	1346	}
1468		1347
1469	/*	1348	/*
1470	* insert_ob_in_map (op, map, originator, flag):	1349	* insert_ob_in_map (op, map, originator, flag):
1471	* This function inserts the object in the two-way linked list	1350	* This function inserts the object in the two-way linked list
…		…
1481	* Passing 0 for flag gives proper default values, so flag really only needs	1360	* Passing 0 for flag gives proper default values, so flag really only needs
1482	* to be set if special handling is needed.	1361	* to be set if special handling is needed.
1483	*	1362	*
1484	* Return value:	1363	* Return value:
1485	* new object if 'op' was merged with other object	1364	* new object if 'op' was merged with other object
1486	* NULL if 'op' was destroyed	1365	* NULL if there was an error (destroyed, blocked etc.)
1487	* just 'op' otherwise	1366	* just 'op' otherwise
1488	*/	1367	*/
1489		1368	object *
1490	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1369	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1491	{	1370	{
1492	object *tmp, *top, *floor=NULL;	1371	op->remove ();
1493	sint16 x,y;
1494		1372
1495	if (QUERY_FLAG (op, FLAG_FREED)) {	1373	if (m == &freed_map)//D TODO: remove soon
1496	LOG (llevError, "Trying to insert freed object!\n");	1374	{//D
1497	return NULL;	1375	LOG (llevError | logBacktrace, "tries to insret object on freed objects map: %s", op->debug_desc ());//D
1498	}	1376	}//D
1499	if(m==NULL) {
1500	dump_object(op);
1501	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1502	return op;
1503	}
1504	if(out_of_map(m,op->x,op->y)) {
1505	dump_object(op);
1506	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);
1507	#ifdef MANY_CORES
1508	/* Better to catch this here, as otherwise the next use of this object
1509	* is likely to cause a crash. Better to find out where it is getting
1510	* improperly inserted.
1511	*/
1512	abort();
1513	#endif
1514	return op;
1515	}
1516	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1517	dump_object(op);
1518	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1519	return op;
1520	}
1521	if(op->more!=NULL) {
1522	/* The part may be on a different map. */
1523		1377
1524	object *more = op->more;
1525
1526	/* We really need the caller to normalize coordinates - if
1527	* we set the map, that doesn't work if the location is within
1528	* a map and this is straddling an edge. So only if coordinate
1529	* is clear wrong do we normalize it.
1530	*/
1531	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {
1532	/* Debugging information so you can see the last coordinates this object had */
1533	more->ox = more->x;
1534	more->oy = more->y;
1535	more->map = get_map_from_coord(m, &more->x, &more->y);
1536	} else if (!more->map) {
1537	/* For backwards compatibility - when not dealing with tiled maps,
1538	* more->map should always point to the parent.
1539	*/
1540	more->map = m;
1541	}
1542
1543	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {
1544	if ( ! op->head)
1545	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
1546	return NULL;
1547	}
1548	}
1549	CLEAR_FLAG(op,FLAG_REMOVED);
1550
1551	/* Debugging information so you can see the last coordinates this object had */
1552	op->ox=op->x;
1553	op->oy=op->y;
1554
1555	/* Ideally, the caller figures this out. However, it complicates a lot	1378	/* Ideally, the caller figures this out. However, it complicates a lot
1556	* of areas of callers (eg, anything that uses find_free_spot would now	1379	* of areas of callers (eg, anything that uses find_free_spot would now
1557	* need extra work	1380	* need extra work
1558	*/	1381	*/
1559	op->map=get_map_from_coord(m, &op->x, &op->y);	1382	maptile *newmap = m;
1560	x = op->x;	1383	if (!xy_normalise (newmap, op->x, op->y))
1561	y = op->y;	1384	{
		1385	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
		1386	return 0;
		1387	}
1562		1388
		1389	if (object *more = op->more)
		1390	if (!insert_ob_in_map (more, m, originator, flag))
		1391	return 0;
		1392
		1393	op->flag [FLAG_REMOVED] = false;
		1394	op->env = 0;
		1395	op->map = newmap;
		1396
		1397	mapspace &ms = op->ms ();
		1398
1563	/* this has to be done after we translate the coordinates.	1399	/* this has to be done after we translate the coordinates.
1564	*/	1400	*/
1565	if(op->nrof && !(flag & INS_NO_MERGE)) {	1401	if (op->nrof && !(flag & INS_NO_MERGE))
1566	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1402	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1567	if (CAN_MERGE(op,tmp)) {	1403	if (object::can_merge (op, tmp))
1568	op->nrof+=tmp->nrof;	1404	{
1569	remove_ob(tmp);	1405	// TODO: we actually want to update tmp, not op,
1570	free_object(tmp);	1406	// but some caller surely breaks when we return tmp
1571	}	1407	// from here :/
1572	}	1408	op->nrof += tmp->nrof;
		1409	tmp->destroy ();
		1410	}
1573		1411
1574	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1412	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1575	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1413	op->clr_flag (FLAG_INV_LOCKED);
1576	if (!QUERY_FLAG(op, FLAG_ALIVE))
1577	CLEAR_FLAG(op, FLAG_NO_STEAL);
1578		1414
		1415	if (!op->flag [FLAG_ALIVE])
		1416	op->clr_flag (FLAG_NO_STEAL);
		1417
1579	if (flag & INS_BELOW_ORIGINATOR) {	1418	if (flag & INS_BELOW_ORIGINATOR)
		1419	{
1580	if (originator->map != op->map || originator->x != op->x ||	1420	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
1581	originator->y != op->y) {	1421	{
1582	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1422	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1583	abort();	1423	abort ();
1584	}	1424	}
		1425
		1426	if (!originator->is_on_map ())
		1427	{
		1428	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1429	op->debug_desc (), originator->debug_desc ());
		1430	abort ();
		1431	}
		1432
1585	op->above = originator;	1433	op->above = originator;
1586	op->below = originator->below;	1434	op->below = originator->below;
1587	if (op->below) op->below->above = op;
1588	else SET_MAP_OB(op->map, op->x, op->y, op);
1589	/* since *below* originator, no need to update top */
1590	originator->below = op;	1435	originator->below = op;
1591	} else {	1436
		1437	*(op->below ? &op->below->above : &ms.bot) = op;
		1438	}
		1439	else
		1440	{
		1441	object *floor = 0;
		1442	object *top = ms.top;
		1443
1592	/* If there are other objects, then */	1444	/* If there are other objects, then */
1593	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {	1445	if (top)
1594	object *last=NULL;	1446	{
1595	/*	1447	/*
1596	* If there are multiple objects on this space, we do some trickier handling.	1448	* If there are multiple objects on this space, we do some trickier handling.
1597	* We've already dealt with merging if appropriate.	1449	* We've already dealt with merging if appropriate.
1598	* Generally, we want to put the new object on top. But if	1450	* Generally, we want to put the new object on top. But if
1599	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1451	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1600	* floor, we want to insert above that and no further.	1452	* floor, we want to insert above that and no further.
1601	* Also, if there are spell objects on this space, we stop processing	1453	* Also, if there are spell objects on this space, we stop processing
1602	* once we get to them. This reduces the need to traverse over all of	1454	* once we get to them. This reduces the need to traverse over all of
1603	* them when adding another one - this saves quite a bit of cpu time	1455	* them when adding another one - this saves quite a bit of cpu time
1604	* when lots of spells are cast in one area. Currently, it is presumed	1456	* when lots of spells are cast in one area. Currently, it is presumed
1605	* that flying non pickable objects are spell objects.	1457	* that flying non pickable objects are spell objects.
1606	*/	1458	*/
		1459	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1460	{
		1461	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
		1462	floor = tmp;
1607		1463
1608	while (top != NULL) {	1464	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1609	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1610	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1611	if (QUERY_FLAG(top, FLAG_NO_PICK)
1612	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1613	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1614	{	1465	{
1615	/* We insert above top, so we want this object below this */	1466	/* We insert above top, so we want this object below this */
1616	top=top->below;	1467	top = tmp->below;
1617	break;	1468	break;
1618	}	1469	}
1619	last = top;
1620	top = top->above;
1621	}
1622	/* Don't want top to be NULL, so set it to the last valid object */
1623	top = last;
1624		1470
		1471	top = tmp;
		1472	}
		1473
1625	/* We let update_position deal with figuring out what the space	1474	/* We let update_position deal with figuring out what the space
1626	* looks like instead of lots of conditions here.	1475	* looks like instead of lots of conditions here.
1627	* makes things faster, and effectively the same result.	1476	* makes things faster, and effectively the same result.
1628	*/	1477	*/
1629		1478
1630	/* Have object 'fall below' other objects that block view.	1479	/* Have object 'fall below' other objects that block view.
1631	* Unless those objects are exits, type 66	1480	* Unless those objects are exits.
1632	* If INS_ON_TOP is used, don't do this processing	1481	* If INS_ON_TOP is used, don't do this processing
1633	* Need to find the object that in fact blocks view, otherwise	1482	* Need to find the object that in fact blocks view, otherwise
1634	* stacking is a bit odd.	1483	* stacking is a bit odd.
1635	*/	1484	*/
1636	if (!(flag & INS_ON_TOP) &&	1485	if (!(flag & INS_ON_TOP)
1637	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&	1486	&& ms.flags () & P_BLOCKSVIEW
1638	(op->face && !op->face->visibility)) {	1487	&& (op->face && !faces [op->face].visibility))
		1488	{
		1489	object *last;
		1490
1639	for (last=top; last != floor; last=last->below)	1491	for (last = top; last != floor; last = last->below)
1640	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;	1492	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
		1493	break;
		1494
1641	/* Check to see if we found the object that blocks view,	1495	/* Check to see if we found the object that blocks view,
1642	* and make sure we have a below pointer for it so that	1496	* and make sure we have a below pointer for it so that
1643	* we can get inserted below this one, which requires we	1497	* we can get inserted below this one, which requires we
1644	* set top to the object below us.	1498	* set top to the object below us.
1645	*/	1499	*/
1646	if (last && last->below && last != floor) top=last->below;	1500	if (last && last->below && last != floor)
		1501	top = last->below;
		1502	}
		1503	} /* If objects on this space */
		1504
		1505	if (flag & INS_ABOVE_FLOOR_ONLY)
		1506	top = floor;
		1507
		1508	// insert object above top, or bottom-most if top = 0
		1509	if (!top)
		1510	{
		1511	op->below = 0;
		1512	op->above = ms.bot;
		1513	ms.bot = op;
		1514
		1515	*(op->above ? &op->above->below : &ms.top) = op;
		1516	}
		1517	else
		1518	{
		1519	op->above = top->above;
		1520	top->above = op;
		1521
		1522	op->below = top;
		1523	*(op->above ? &op->above->below : &ms.top) = op;
		1524	}
1647	}	1525	}
1648	} /* If objects on this space */
1649	if (flag & INS_MAP_LOAD)
1650	top = GET_MAP_TOP(op->map,op->x,op->y);
1651	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1652		1526
1653	/* Top is the object that our object (op) is going to get inserted above.	1527	if (op->is_player ())
1654	*/	1528	{
1655
1656	/* First object on this space */
1657	if (!top) {
1658	op->above = GET_MAP_OB(op->map, op->x, op->y);
1659	if (op->above) op->above->below = op;
1660	op->below = NULL;
1661	SET_MAP_OB(op->map, op->x, op->y, op);
1662	} else { /* get inserted into the stack above top */
1663	op->above = top->above;
1664	if (op->above) op->above->below = op;
1665	op->below = top;
1666	top->above = op;
1667	}
1668	if (op->above==NULL)
1669	SET_MAP_TOP(op->map,op->x, op->y, op);
1670	} /* else not INS_BELOW_ORIGINATOR */
1671
1672	if(op->type==PLAYER)
1673	op->contr->do_los=1;	1529	op->contr->do_los = 1;
1674		1530	++op->map->players;
1675	/* If we have a floor, we know the player, if any, will be above	1531	op->map->touch ();
1676	* it, so save a few ticks and start from there.
1677	*/
1678	if (!(flag & INS_MAP_LOAD))
1679	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1680	if (tmp->type == PLAYER)
1681	tmp->contr->socket.update_look=1;
1682	}	1532	}
1683		1533
		1534	op->map->dirty = true;
		1535
		1536	if (object *pl = ms.player ())
		1537	//TODO: the floorbox prev/next might need updating
		1538	//esrv_send_item (pl, op);
		1539	//TODO: update floorbox to preserve ordering
		1540	if (pl->contr->ns)
		1541	pl->contr->ns->floorbox_update ();
		1542
1684	/* If this object glows, it may affect lighting conditions that are	1543	/* If this object glows, it may affect lighting conditions that are
1685	* visible to others on this map. But update_all_los is really	1544	* visible to others on this map. But update_all_los is really
1686	* an inefficient way to do this, as it means los for all players	1545	* an inefficient way to do this, as it means los for all players
1687	* on the map will get recalculated. The players could very well	1546	* on the map will get recalculated. The players could very well
1688	* be far away from this change and not affected in any way -	1547	* be far away from this change and not affected in any way -
1689	* this should get redone to only look for players within range,	1548	* this should get redone to only look for players within range,
1690	* or just updating the P_NEED_UPDATE for spaces within this area	1549	* or just updating the P_UPTODATE for spaces within this area
1691	* of effect may be sufficient.	1550	* of effect may be sufficient.
1692	*/	1551	*/
1693	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1552	if (op->affects_los ())
		1553	{
		1554	op->ms ().invalidate ();
1694	update_all_los(op->map, op->x, op->y);	1555	update_all_los (op->map, op->x, op->y);
		1556	}
1695		1557
1696
1697	/* updates flags (blocked, alive, no magic, etc) for this map space */	1558	/* updates flags (blocked, alive, no magic, etc) for this map space */
1698	update_object(op,UP_OBJ_INSERT);	1559	update_object (op, UP_OBJ_INSERT);
1699		1560
		1561	INVOKE_OBJECT (INSERT, op);
1700		1562
1701	/* Don't know if moving this to the end will break anything. However,	1563	/* Don't know if moving this to the end will break anything. However,
1702	* we want to have update_look set above before calling this.	1564	* we want to have floorbox_update called before calling this.
1703	*	1565	*
1704	* check_move_on() must be after this because code called from	1566	* check_move_on() must be after this because code called from
1705	* check_move_on() depends on correct map flags (so functions like	1567	* check_move_on() depends on correct map flags (so functions like
1706	* blocked() and wall() work properly), and these flags are updated by	1568	* blocked() and wall() work properly), and these flags are updated by
1707	* update_object().	1569	* update_object().
1708	*/	1570	*/
1709		1571
1710	/* if this is not the head or flag has been passed, don't check walk on status */	1572	/* if this is not the head or flag has been passed, don't check walk on status */
1711
1712	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1573	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1574	{
1713	if (check_move_on(op, originator))	1575	if (check_move_on (op, originator))
1714	return NULL;	1576	return 0;
1715		1577
1716	/* If we are a multi part object, lets work our way through the check	1578	/* If we are a multi part object, lets work our way through the check
1717	* walk on's.	1579	* walk on's.
1718	*/	1580	*/
1719	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1581	for (object *tmp = op->more; tmp; tmp = tmp->more)
1720	if (check_move_on (tmp, originator))	1582	if (check_move_on (tmp, originator))
1721	return NULL;	1583	return 0;
1722	}	1584	}
		1585
1723	return op;	1586	return op;
1724	}	1587	}
1725		1588
1726	/* this function inserts an object in the map, but if it	1589	/* this function inserts an object in the map, but if it
1727	* finds an object of its own type, it'll remove that one first.	1590	* finds an object of its own type, it'll remove that one first.
1728	* op is the object to insert it under: supplies x and the map.	1591	* op is the object to insert it under: supplies x and the map.
1729	*/	1592	*/
1730	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1593	void
1731	object *tmp;	1594	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1732	object *tmp1;	1595	{
1733
1734	/* first search for itself and remove any old instances */	1596	/* first search for itself and remove any old instances */
1735		1597
1736	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1598	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1737	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1599	if (tmp->arch->archname == archname) /* same archetype */
1738	remove_ob(tmp);	1600	tmp->destroy ();
1739	free_object(tmp);
1740	}
1741	}
1742		1601
1743	tmp1=arch_to_object(find_archetype(arch_string));	1602	object *tmp = archetype::find (archname)->instance ();
1744		1603
1745		1604	tmp->x = op->x;
1746	tmp1->x = op->x; tmp1->y = op->y;	1605	tmp->y = op->y;
		1606
1747	insert_ob_in_map(tmp1,op->map,op,0);	1607	insert_ob_in_map (tmp, op->map, op, 0);
1748	}	1608	}
1749		1609
1750	/*	1610	object *
1751	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1611	object::insert_at (object *where, object *originator, int flags)
1752	* is returned contains nr objects, and the remaining parts contains	1612	{
1753	* the rest (or is removed and freed if that number is 0).	1613	if (where->env)
1754	* On failure, NULL is returned, and the reason put into the	1614	return where->env->insert (this);
1755	* global static errmsg array.	1615	else
1756	*/	1616	return where->map->insert (this, where->x, where->y, originator, flags);
		1617	}
1757		1618
1758	object *get_split_ob(object *orig_ob, uint32 nr) {	1619	// check whether we can put this into the map, respect max_volume, max_items
1759	object *newob;	1620	bool
1760	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1621	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1622	{
		1623	mapspace &ms = m->at (x, y);
1761		1624
1762	if(orig_ob->nrof<nr) {	1625	int items = ms.items ();
1763	sprintf(errmsg,"There are only %d %ss.",
1764	orig_ob->nrof?orig_ob->nrof:1, orig_ob->name);
1765	return NULL;
1766	}
1767	newob = object_create_clone(orig_ob);
1768	if((orig_ob->nrof-=nr)<1) {
1769	if ( ! is_removed)
1770	remove_ob(orig_ob);
1771	free_object2(orig_ob, 1);
1772	}
1773	else if ( ! is_removed) {
1774	if(orig_ob->env!=NULL)
1775	sub_weight (orig_ob->env,orig_ob->weight*nr);
1776	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1777	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1778	LOG(llevDebug,
1779	"Error, Tried to split object whose map is not in memory.\n");
1780	return NULL;
1781	}
1782	}
1783	newob->nrof=nr;
1784		1626
		1627	if (!items // testing !items ensures we can drop at least one item
		1628	|| (items < m->max_items
		1629	&& ms.volume () < m->max_volume))
1785	return newob;	1630	return true;
1786	}
1787		1631
		1632	if (originator && originator->is_player ())
		1633	originator->contr->failmsgf (
		1634	"No matter how hard you try, you just cannot put the %s here H<Try to remove some items from the floor first.>",
		1635	query_name ()
		1636	);
		1637
		1638	return false;
		1639	}
		1640
1788	/*	1641	/*
1789	* decrease_ob_nr(object, number) decreases a specified number from	1642	* decrease(object, number) decreases a specified number from
1790	* the amount of an object. If the amount reaches 0, the object	1643	* the amount of an object. If the amount reaches 0, the object
1791	* is subsequently removed and freed.	1644	* is subsequently removed and freed.
1792	*	1645	*
1793	* Return value: 'op' if something is left, NULL if the amount reached 0	1646	* Return value: 'op' if something is left, NULL if the amount reached 0
1794	*/	1647	*/
1795		1648	bool
1796	object *decrease_ob_nr (object *op, uint32 i)	1649	object::decrease (sint32 nr)
1797	{	1650	{
1798	object *tmp;	1651	if (!nr)
1799	player *pl;	1652	return true;
1800		1653
1801	if (i == 0) /* objects with op->nrof require this check */	1654	nr = min (nr, nrof);
		1655
		1656	if (nrof > nr)
		1657	{
		1658	nrof -= nr;
		1659	adjust_weight (env, -weight * max (1, nr)); // carrying == 0
		1660
		1661	if (object *pl = visible_to ())
		1662	esrv_update_item (UPD_NROF, pl, this);
		1663
		1664	return true;
		1665	}
		1666	else
		1667	{
		1668	destroy ();
		1669	return false;
		1670	}
		1671	}
		1672
		1673	/*
		1674	* split(ob,nr) splits up ob into two parts. The part which
		1675	* is returned contains nr objects, and the remaining parts contains
		1676	* the rest (or is removed and returned if that number is 0).
		1677	* On failure, NULL is returned.
		1678	*/
		1679	object *
		1680	object::split (sint32 nr)
		1681	{
		1682	int have = number_of ();
		1683
		1684	if (have < nr)
		1685	return 0;
		1686	else if (have == nr)
		1687	{
		1688	remove ();
		1689	return this;
		1690	}
		1691	else
		1692	{
		1693	decrease (nr);
		1694
		1695	object *op = deep_clone ();
		1696	op->nrof = nr;
1802	return op;	1697	return op;
1803
1804	if (i > op->nrof)
1805	i = op->nrof;
1806
1807	if (QUERY_FLAG (op, FLAG_REMOVED))
1808	{	1698	}
1809	op->nrof -= i;	1699	}
		1700
		1701	object *
		1702	insert_ob_in_ob (object *op, object *where)
		1703	{
		1704	if (!where)
1810	}	1705	{
1811	else if (op->env != NULL)	1706	char *dump = dump_object (op);
1812	{	1707	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1813	/* is this object in the players inventory, or sub container	1708	free (dump);
1814	* therein?
1815	*/
1816	tmp = is_player_inv (op->env);
1817	/* nope. Is this a container the player has opened?
1818	* If so, set tmp to that player.
1819	* IMO, searching through all the players will mostly
1820	* likely be quicker than following op->env to the map,
1821	* and then searching the map for a player.
1822	*/
1823	if (!tmp) {
1824	for (pl=first_player; pl; pl=pl->next)
1825	if (pl->ob->container == op->env) break;
1826	if (pl) tmp=pl->ob;
1827	else tmp=NULL;
1828	}
1829
1830	if (i < op->nrof) {
1831	sub_weight (op->env, op->weight * i);
1832	op->nrof -= i;
1833	if (tmp) {
1834	esrv_send_item(tmp, op);
1835	}
1836	} else {
1837	remove_ob (op);
1838	op->nrof = 0;
1839	if (tmp) {
1840	esrv_del_item(tmp->contr, op->count);
1841	}
1842	}
1843	}
1844	else
1845	{
1846	object *above = op->above;
1847
1848	if (i < op->nrof) {
1849	op->nrof -= i;
1850	} else {
1851	remove_ob (op);
1852	op->nrof = 0;
1853	}
1854	/* Since we just removed op, op->above is null */
1855	for (tmp = above; tmp != NULL; tmp = tmp->above)
1856	if (tmp->type == PLAYER) {
1857	if (op->nrof)
1858	esrv_send_item(tmp, op);
1859	else
1860	esrv_del_item(tmp->contr, op->count);
1861	}
1862	}
1863
1864	if (op->nrof) {
1865	return op;	1709	return op;
1866	} else {	1710	}
1867	free_object (op);	1711
1868	return NULL;	1712	if (where->head_ () != where)
1869	}	1713	{
1870	}	1714	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1871		1715	where = where->head;
1872	/*
1873	* add_weight(object, weight) adds the specified weight to an object,
1874	* and also updates how much the environment(s) is/are carrying.
1875	*/
1876
1877	void add_weight (object *op, signed long weight) {
1878	while (op!=NULL) {
1879	if (op->type == CONTAINER) {
1880	weight=(signed long)(weight*(100-op->stats.Str)/100);
1881	}
1882	op->carrying+=weight;
1883	op=op->env;
1884	}	1716	}
1885	}
1886		1717
		1718	return where->insert (op);
		1719	}
		1720
1887	/*	1721	/*
1888	* insert_ob_in_ob(op,environment):	1722	* env->insert (op)
1889	* This function inserts the object op in the linked list	1723	* This function inserts the object op in the linked list
1890	* inside the object environment.	1724	* inside the object environment.
1891	*	1725	*
1892	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1893	* the inventory at the last position or next to other objects of the same
1894	* type.
1895	* Frank: Now sorted by type, archetype and magic!
1896	*
1897	* The function returns now pointer to inserted item, and return value can	1726	* The function returns now pointer to inserted item, and return value can
1898	* be != op, if items are merged. -Tero	1727	* be != op, if items are merged. -Tero
1899	*/	1728	*/
1900		1729	object *
1901	object *insert_ob_in_ob(object *op,object *where) {	1730	object::insert (object *op)
1902	object *tmp, *otmp;	1731	{
1903
1904	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1905	dump_object(op);
1906	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1907	return op;
1908	}
1909	if(where==NULL) {
1910	dump_object(op);
1911	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1912	return op;
1913	}
1914	if (where->head) {
1915	LOG(llevDebug,
1916	"Warning: Tried to insert object wrong part of multipart object.\n");
1917	where = where->head;
1918	}
1919	if (op->more) {	1732	if (op->more)
		1733	{
1920	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1734	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1921	op->name, op->count);
1922	return op;	1735	return op;
1923	}	1736	}
1924	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1737
1925	CLEAR_FLAG(op, FLAG_REMOVED);	1738	op->remove ();
		1739
		1740	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1741
1926	if(op->nrof) {	1742	if (op->nrof)
1927	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1743	for (object *tmp = inv; tmp; tmp = tmp->below)
1928	if ( CAN_MERGE(tmp,op) ) {	1744	if (object::can_merge (tmp, op))
		1745	{
1929	/* return the original object and remove inserted object	1746	/* return the original object and remove inserted object
1930	(client needs the original object) */	1747	(client needs the original object) */
1931	tmp->nrof += op->nrof;	1748	tmp->nrof += op->nrof;
1932	/* Weight handling gets pretty funky. Since we are adding to	1749
1933	* tmp->nrof, we need to increase the weight.	1750	if (object *pl = tmp->visible_to ())
1934	*/	1751	esrv_update_item (UPD_NROF, pl, tmp);
1935	add_weight (where, op->weight*op->nrof);	1752
1936	SET_FLAG(op, FLAG_REMOVED);	1753	adjust_weight (this, op->total_weight ());
1937	free_object(op); /* free the inserted object */	1754
		1755	op->destroy ();
1938	op = tmp;	1756	op = tmp;
1939	remove_ob (op); /* and fix old object's links */	1757	goto inserted;
1940	CLEAR_FLAG(op, FLAG_REMOVED);
1941	break;
1942	}	1758	}
1943		1759
1944	/* I assume combined objects have no inventory	1760	op->owner = 0; // it's his/hers now. period.
1945	* We add the weight - this object could have just been removed	1761	op->map = 0;
1946	* (if it was possible to merge). calling remove_ob will subtract	1762	op->x = 0;
1947	* the weight, so we need to add it in again, since we actually do	1763	op->y = 0;
1948	* the linking below
1949	*/
1950	add_weight (where, op->weight*op->nrof);
1951	} else
1952	add_weight (where, (op->weight+op->carrying));
1953		1764
1954	otmp=is_player_inv(where);
1955	if (otmp&&otmp->contr!=NULL) {
1956	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1957	fix_player(otmp);
1958	}
1959
1960	op->map=NULL;
1961	op->env=where;
1962	op->above=NULL;	1765	op->above = 0;
1963	op->below=NULL;	1766	op->below = inv;
1964	op->x=0,op->y=0;	1767	op->env = this;
1965	op->ox=0,op->oy=0;
1966		1768
		1769	if (inv)
		1770	inv->above = op;
		1771
		1772	inv = op;
		1773
		1774	op->flag [FLAG_REMOVED] = 0;
		1775
		1776	if (object *pl = op->visible_to ())
		1777	esrv_send_item (pl, op);
		1778
		1779	adjust_weight (this, op->total_weight ());
		1780
		1781	inserted:
1967	/* reset the light list and los of the players on the map */	1782	/* reset the light list and los of the players on the map */
1968	if((op->glow_radius!=0)&&where->map)	1783	if (op->glow_radius && is_on_map ())
1969	{	1784	{
1970	#ifdef DEBUG_LIGHTS	1785	update_stats ();
1971	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1786	update_all_los (map, x, y);
1972	op->name);
1973	#endif /* DEBUG_LIGHTS */
1974	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1975	}	1787	}
		1788	else if (is_player ())
		1789	// if this is a player's inventory, update stats
		1790	contr->queue_stats_update ();
1976		1791
1977	/* Client has no idea of ordering so lets not bother ordering it here.	1792	INVOKE_OBJECT (INSERT, this);
1978	* It sure simplifies this function...	1793
1979	*/
1980	if (where->inv==NULL)
1981	where->inv=op;
1982	else {
1983	op->below = where->inv;
1984	op->below->above = op;
1985	where->inv = op;
1986	}
1987	return op;	1794	return op;
1988	}	1795	}
1989		1796
1990	/*	1797	/*
1991	* Checks if any objects has a move_type that matches objects	1798	* Checks if any objects has a move_type that matches objects
…		…
2005	*	1812	*
2006	* MSW 2001-07-08: Check all objects on space, not just those below	1813	* MSW 2001-07-08: Check all objects on space, not just those below
2007	* object being inserted. insert_ob_in_map may not put new objects	1814	* object being inserted. insert_ob_in_map may not put new objects
2008	* on top.	1815	* on top.
2009	*/	1816	*/
2010		1817	int
2011	int check_move_on (object *op, object *originator)	1818	check_move_on (object *op, object *originator)
2012	{	1819	{
2013	object *tmp;	1820	if (op->flag [FLAG_NO_APPLY])
2014	tag_t tag;
2015	mapstruct *m=op->map;
2016	int x=op->x, y=op->y;
2017	MoveType move_on, move_slow, move_block;
2018
2019	if(QUERY_FLAG(op,FLAG_NO_APPLY))
2020	return 0;
2021
2022	tag = op->count;
2023
2024	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
2025	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
2026	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
2027
2028	/* if nothing on this space will slow op down or be applied,
2029	* no need to do checking below. have to make sure move_type
2030	* is set, as lots of objects don't have it set - we treat that
2031	* as walking.
2032	*/
2033	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
2034	return 0;
2035
2036	/* This is basically inverse logic of that below - basically,
2037	* if the object can avoid the move on or slow move, they do so,
2038	* but can't do it if the alternate movement they are using is
2039	* blocked. Logic on this seems confusing, but does seem correct.
2040	*/
2041	if ((op->move_type & ~move_on & ~move_block) != 0 &&
2042	(op->move_type & ~move_slow & ~move_block) != 0) return 0;
2043
2044	/* The objects have to be checked from top to bottom.
2045	* Hence, we first go to the top:
2046	*/
2047
2048	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
2049	tmp->above!=NULL; tmp=tmp->above) {
2050	/* Trim the search when we find the first other spell effect
2051	* this helps performance so that if a space has 50 spell objects,
2052	* we don't need to check all of them.
2053	*/
2054	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
2055	}
2056	for(;tmp!=NULL; tmp=tmp->below) {
2057	if (tmp == op) continue; /* Can't apply yourself */
2058
2059	/* Check to see if one of the movement types should be slowed down.
2060	* Second check makes sure that the movement types not being slowed
2061	* (~slow_move) is not blocked on this space - just because the
2062	* space doesn't slow down swimming (for example), if you can't actually
2063	* swim on that space, can't use it to avoid the penalty.
2064	*/
2065	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {
2066	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
2067	((op->move_type & tmp->move_slow) &&
2068	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {
2069
2070	float diff;
2071
2072	diff = tmp->move_slow_penalty*FABS(op->speed);
2073	if (op->type == PLAYER) {
2074	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||
2075	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {
2076	diff /= 4.0;
2077	}
2078	}
2079	op->speed_left -= diff;
2080	}
2081	}
2082
2083	/* Basically same logic as above, except now for actual apply. */
2084	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
2085	((op->move_type & tmp->move_on) &&
2086	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {
2087
2088	move_apply(tmp, op, originator);
2089	if (was_destroyed (op, tag))
2090	return 1;
2091
2092	/* what the person/creature stepped onto has moved the object
2093	* someplace new. Don't process any further - if we did,
2094	* have a feeling strange problems would result.
2095	*/
2096	if (op->map != m || op->x != x || op->y != y) return 0;
2097	}
2098	}
2099	return 0;	1821	return 0;
		1822
		1823	object *tmp;
		1824	maptile *m = op->map;
		1825	int x = op->x, y = op->y;
		1826
		1827	mapspace &ms = m->at (x, y);
		1828
		1829	ms.update ();
		1830
		1831	MoveType move_on = ms.move_on;
		1832	MoveType move_slow = ms.move_slow;
		1833	MoveType move_block = ms.move_block;
		1834
		1835	/* if nothing on this space will slow op down or be applied,
		1836	* no need to do checking below. have to make sure move_type
		1837	* is set, as lots of objects don't have it set - we treat that
		1838	* as walking.
		1839	*/
		1840	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
		1841	return 0;
		1842
		1843	/* This is basically inverse logic of that below - basically,
		1844	* if the object can avoid the move on or slow move, they do so,
		1845	* but can't do it if the alternate movement they are using is
		1846	* blocked. Logic on this seems confusing, but does seem correct.
		1847	*/
		1848	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
		1849	return 0;
		1850
		1851	/* The objects have to be checked from top to bottom.
		1852	* Hence, we first go to the top:
		1853	*/
		1854	for (object *next, *tmp = ms.top; tmp; tmp = next)
		1855	{
		1856	next = tmp->below;
		1857
		1858	if (tmp == op)
		1859	continue; /* Can't apply yourself */
		1860
		1861	/* Check to see if one of the movement types should be slowed down.
		1862	* Second check makes sure that the movement types not being slowed
		1863	* (~slow_move) is not blocked on this space - just because the
		1864	* space doesn't slow down swimming (for example), if you can't actually
		1865	* swim on that space, can't use it to avoid the penalty.
		1866	*/
		1867	if (!op->flag [FLAG_WIZPASS])
		1868	{
		1869	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
		1870	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1871	{
		1872	float diff = tmp->move_slow_penalty * fabs (op->speed);
		1873
		1874	if (op->is_player ())
		1875	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
		1876	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
		1877	diff /= 4.0;
		1878
		1879	op->speed_left -= diff;
		1880	}
		1881	}
		1882
		1883	/* Basically same logic as above, except now for actual apply. */
		1884	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
		1885	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
		1886	{
		1887	move_apply (tmp, op, originator);
		1888
		1889	if (op->destroyed ())
		1890	return 1;
		1891
		1892	/* what the person/creature stepped onto has moved the object
		1893	* someplace new. Don't process any further - if we did,
		1894	* have a feeling strange problems would result.
		1895	*/
		1896	if (op->map != m || op->x != x || op->y != y)
		1897	return 0;
		1898	}
		1899	}
		1900
		1901	return 0;
2100	}	1902	}
2101		1903
2102	/*	1904	/*
2103	* present_arch(arch, map, x, y) searches for any objects with	1905	* present_arch(arch, map, x, y) searches for any objects with
2104	* a matching archetype at the given map and coordinates.	1906	* a matching archetype at the given map and coordinates.
2105	* The first matching object is returned, or NULL if none.	1907	* The first matching object is returned, or NULL if none.
2106	*/	1908	*/
2107		1909	object *
2108	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1910	present_arch (const archetype *at, maptile *m, int x, int y)
2109	object *tmp;	1911	{
2110	if(m==NULL || out_of_map(m,x,y)) {	1912	if (!m || out_of_map (m, x, y))
		1913	{
2111	LOG(llevError,"Present_arch called outside map.\n");	1914	LOG (llevError, "Present_arch called outside map.\n");
2112	return NULL;	1915	return NULL;
2113	}	1916	}
2114	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1917
2115	if(tmp->arch == at)	1918	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1919	if (tmp->arch->archname == at->archname)
2116	return tmp;	1920	return tmp;
		1921
2117	return NULL;	1922	return NULL;
2118	}	1923	}
2119		1924
2120	/*	1925	/*
2121	* present(type, map, x, y) searches for any objects with	1926	* present(type, map, x, y) searches for any objects with
2122	* a matching type variable at the given map and coordinates.	1927	* a matching type variable at the given map and coordinates.
2123	* The first matching object is returned, or NULL if none.	1928	* The first matching object is returned, or NULL if none.
2124	*/	1929	*/
2125		1930	object *
2126	object *present(unsigned char type,mapstruct *m, int x,int y) {	1931	present (unsigned char type, maptile *m, int x, int y)
2127	object *tmp;	1932	{
2128	if(out_of_map(m,x,y)) {	1933	if (out_of_map (m, x, y))
		1934	{
2129	LOG(llevError,"Present called outside map.\n");	1935	LOG (llevError, "Present called outside map.\n");
2130	return NULL;	1936	return NULL;
2131	}	1937	}
2132	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1938
		1939	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
2133	if(tmp->type==type)	1940	if (tmp->type == type)
2134	return tmp;	1941	return tmp;
		1942
2135	return NULL;	1943	return NULL;
2136	}	1944	}
2137		1945
2138	/*	1946	/*
2139	* present_in_ob(type, object) searches for any objects with	1947	* present_in_ob(type, object) searches for any objects with
2140	* a matching type variable in the inventory of the given object.	1948	* a matching type variable in the inventory of the given object.
2141	* The first matching object is returned, or NULL if none.	1949	* The first matching object is returned, or NULL if none.
2142	*/	1950	*/
2143		1951	object *
2144	object *present_in_ob(unsigned char type, const object *op) {	1952	present_in_ob (unsigned char type, const object *op)
2145	object *tmp;	1953	{
2146	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1954	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2147	if(tmp->type==type)	1955	if (tmp->type == type)
2148	return tmp;	1956	return tmp;
		1957
2149	return NULL;	1958	return NULL;
2150	}	1959	}
2151		1960
2152	/*	1961	/*
2153	* present_in_ob (type, str, object) searches for any objects with	1962	* present_in_ob (type, str, object) searches for any objects with
…		…
2161	* str is the string to match against. Note that we match against	1970	* str is the string to match against. Note that we match against
2162	* the object name, not the archetype name. this is so that the	1971	* the object name, not the archetype name. this is so that the
2163	* spell code can use one object type (force), but change it's name	1972	* spell code can use one object type (force), but change it's name
2164	* to be unique.	1973	* to be unique.
2165	*/	1974	*/
2166		1975	object *
2167	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1976	present_in_ob_by_name (int type, const char *str, const object *op)
2168	object *tmp;	1977	{
2169
2170	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1978	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2171	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1979	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2172	return tmp;	1980	return tmp;
2173	}	1981
2174	return NULL;	1982	return 0;
2175	}	1983	}
2176		1984
2177	/*	1985	/*
2178	* present_arch_in_ob(archetype, object) searches for any objects with	1986	* present_arch_in_ob(archetype, object) searches for any objects with
2179	* a matching archetype in the inventory of the given object.	1987	* a matching archetype in the inventory of the given object.
2180	* The first matching object is returned, or NULL if none.	1988	* The first matching object is returned, or NULL if none.
2181	*/	1989	*/
2182		1990	object *
2183	object *present_arch_in_ob(const archetype *at, const object *op) {	1991	present_arch_in_ob (const archetype *at, const object *op)
2184	object *tmp;	1992	{
2185	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1993	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2186	if( tmp->arch == at)	1994	if (tmp->arch->archname == at->archname)
2187	return tmp;	1995	return tmp;
		1996
2188	return NULL;	1997	return NULL;
2189	}	1998	}
2190		1999
2191	/*	2000	/*
2192	* activate recursively a flag on an object inventory	2001	* activate recursively a flag on an object inventory
2193	*/	2002	*/
		2003	void
2194	void flag_inv(object*op, int flag){	2004	flag_inv (object *op, int flag)
2195	object *tmp;	2005	{
2196	if(op->inv)
2197	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	2006	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2198	SET_FLAG(tmp, flag);	2007	{
		2008	tmp->set_flag (flag);
2199	flag_inv(tmp,flag);	2009	flag_inv (tmp, flag);
2200	}	2010	}
		2011	}
		2012
2201	}/*	2013	/*
2202	* desactivate recursively a flag on an object inventory	2014	* deactivate recursively a flag on an object inventory
2203	*/	2015	*/
		2016	void
2204	void unflag_inv(object*op, int flag){	2017	unflag_inv (object *op, int flag)
2205	object *tmp;	2018	{
2206	if(op->inv)
2207	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	2019	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2208	CLEAR_FLAG(tmp, flag);	2020	{
		2021	tmp->clr_flag (flag);
2209	unflag_inv(tmp,flag);	2022	unflag_inv (tmp, flag);
2210	}	2023	}
2211	}
2212
2213	/*
2214	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2215	* all it's inventory (recursively).
2216	* If checksums are used, a player will get set_cheat called for
2217	* him/her-self and all object carried by a call to this function.
2218	*/
2219
2220	void set_cheat(object *op) {
2221	SET_FLAG(op, FLAG_WAS_WIZ);
2222	flag_inv(op, FLAG_WAS_WIZ);
2223	}	2024	}
2224		2025
2225	/*	2026	/*
2226	* find_free_spot(object, map, x, y, start, stop) will search for	2027	* find_free_spot(object, map, x, y, start, stop) will search for
2227	* a spot at the given map and coordinates which will be able to contain	2028	* a spot at the given map and coordinates which will be able to contain
…		…
2229	* to search (see the freearr_x/y[] definition).	2030	* to search (see the freearr_x/y[] definition).
2230	* It returns a random choice among the alternatives found.	2031	* It returns a random choice among the alternatives found.
2231	* start and stop are where to start relative to the free_arr array (1,9	2032	* start and stop are where to start relative to the free_arr array (1,9
2232	* does all 4 immediate directions). This returns the index into the	2033	* does all 4 immediate directions). This returns the index into the
2233	* array of the free spot, -1 if no spot available (dir 0 = x,y)	2034	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2234	* Note - this only checks to see if there is space for the head of the
2235	* object - if it is a multispace object, this should be called for all
2236	* pieces.
2237	* Note2: This function does correctly handle tiled maps, but does not	2035	* Note: This function does correctly handle tiled maps, but does not
2238	* inform the caller. However, insert_ob_in_map will update as	2036	* inform the caller. However, insert_ob_in_map will update as
2239	* necessary, so the caller shouldn't need to do any special work.	2037	* necessary, so the caller shouldn't need to do any special work.
2240	* Note - updated to take an object instead of archetype - this is necessary	2038	* Note - updated to take an object instead of archetype - this is necessary
2241	* because arch_blocked (now ob_blocked) needs to know the movement type	2039	* because arch_blocked (now ob_blocked) needs to know the movement type
2242	* to know if the space in question will block the object. We can't use	2040	* to know if the space in question will block the object. We can't use
2243	* the archetype because that isn't correct if the monster has been	2041	* the archetype because that isn't correct if the monster has been
2244	* customized, changed states, etc.	2042	* customized, changed states, etc.
2245	*/	2043	*/
2246		2044	int
2247	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2045	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2046	{
		2047	int altern[SIZEOFFREE];
2248	int i,index=0, flag;	2048	int index = 0, flag;
2249	static int altern[SIZEOFFREE];
2250		2049
2251	for(i=start;i<stop;i++) {	2050	for (int i = start; i < stop; i++)
2252	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2051	{
2253	if(!flag)	2052	mapxy pos (m, x, y); pos.move (i);
		2053
		2054	if (!pos.normalise ())
		2055	continue;
		2056
		2057	mapspace &ms = *pos;
		2058
		2059	if (ms.flags () & P_IS_ALIVE)
		2060	continue;
		2061
		2062	/* However, often
		2063	* ob doesn't have any move type (when used to place exits)
		2064	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2065	*/
		2066	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2067	{
2254	altern[index++]=i;	2068	altern [index++] = i;
		2069	continue;
		2070	}
2255		2071
2256	/* Basically, if we find a wall on a space, we cut down the search size.	2072	/* Basically, if we find a wall on a space, we cut down the search size.
2257	* In this way, we won't return spaces that are on another side of a wall.	2073	* In this way, we won't return spaces that are on another side of a wall.
2258	* This mostly work, but it cuts down the search size in all directions -	2074	* This mostly work, but it cuts down the search size in all directions -
2259	* if the space being examined only has a wall to the north and empty	2075	* if the space being examined only has a wall to the north and empty
2260	* spaces in all the other directions, this will reduce the search space	2076	* spaces in all the other directions, this will reduce the search space
2261	* to only the spaces immediately surrounding the target area, and	2077	* to only the spaces immediately surrounding the target area, and
2262	* won't look 2 spaces south of the target space.	2078	* won't look 2 spaces south of the target space.
2263	*/	2079	*/
2264	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2080	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2081	{
2265	stop=maxfree[i];	2082	stop = maxfree[i];
2266	}	2083	continue;
2267	if(!index) return -1;	2084	}
2268	return altern[RANDOM()%index];
2269	}
2270		2085
		2086	/* Note it is intentional that we check ob - the movement type of the
		2087	* head of the object should correspond for the entire object.
		2088	*/
		2089	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2090	continue;
		2091
		2092	if (ob->blocked (pos.m, pos.x, pos.y))
		2093	continue;
		2094
		2095	altern [index++] = i;
		2096	}
		2097
		2098	if (!index)
		2099	return -1;
		2100
		2101	return altern [rndm (index)];
		2102	}
		2103
2271	/*	2104	/*
2272	* find_first_free_spot(archetype, mapstruct, x, y) works like	2105	* find_first_free_spot(archetype, maptile, x, y) works like
2273	* find_free_spot(), but it will search max number of squares.	2106	* find_free_spot(), but it will search max number of squares.
2274	* But it will return the first available spot, not a random choice.	2107	* But it will return the first available spot, not a random choice.
2275	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2108	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2276	*/	2109	*/
2277		2110	int
2278	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2111	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2279	int i;	2112	{
2280	for(i=0;i<SIZEOFFREE;i++) {	2113	for (int i = 0; i < SIZEOFFREE; i++)
2281	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2114	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2282	return i;	2115	return i;
2283	}	2116
2284	return -1;	2117	return -1;
2285	}	2118	}
2286		2119
2287	/*	2120	/*
2288	* The function permute(arr, begin, end) randomly reorders the array	2121	* The function permute(arr, begin, end) randomly reorders the array
2289	* arr[begin..end-1].	2122	* arr[begin..end-1].
		2123	* now uses a fisher-yates shuffle, old permute was broken
2290	*/	2124	*/
		2125	static void
2291	static void permute(int *arr, int begin, int end)	2126	permute (int *arr, int begin, int end)
2292	{	2127	{
2293	int i, j, tmp, len;	2128	arr += begin;
		2129	end -= begin;
2294		2130
2295	len = end-begin;	2131	while (--end)
2296	for(i = begin; i < end; i++)	2132	swap (arr [end], arr [rndm (end + 1)]);
2297	{
2298	j = begin+RANDOM()%len;
2299
2300	tmp = arr[i];
2301	arr[i] = arr[j];
2302	arr[j] = tmp;
2303	}
2304	}	2133	}
2305		2134
2306	/* new function to make monster searching more efficient, and effective!	2135	/* new function to make monster searching more efficient, and effective!
2307	* This basically returns a randomized array (in the passed pointer) of	2136	* This basically returns a randomized array (in the passed pointer) of
2308	* the spaces to find monsters. In this way, it won't always look for	2137	* the spaces to find monsters. In this way, it won't always look for
2309	* monsters to the north first. However, the size of the array passed	2138	* monsters to the north first. However, the size of the array passed
2310	* covers all the spaces, so within that size, all the spaces within	2139	* covers all the spaces, so within that size, all the spaces within
2311	* the 3x3 area will be searched, just not in a predictable order.	2140	* the 3x3 area will be searched, just not in a predictable order.
2312	*/	2141	*/
		2142	void
2313	void get_search_arr(int *search_arr)	2143	get_search_arr (int *search_arr)
2314	{	2144	{
2315	int i;	2145	int i;
2316		2146
2317	for(i = 0; i < SIZEOFFREE; i++)	2147	for (i = 0; i < SIZEOFFREE; i++)
2318	{
2319	search_arr[i] = i;	2148	search_arr[i] = i;
2320	}
2321		2149
2322	permute(search_arr, 1, SIZEOFFREE1+1);	2150	permute (search_arr, 1, SIZEOFFREE1 + 1);
2323	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2151	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2324	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2152	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2325	}	2153	}
2326		2154
2327	/*	2155	/*
2328	* find_dir(map, x, y, exclude) will search some close squares in the	2156	* find_dir(map, x, y, exclude) will search some close squares in the
2329	* given map at the given coordinates for live objects.	2157	* given map at the given coordinates for live objects.
…		…
2334	* Perhaps incorrectly, but I'm making the assumption that exclude	2162	* Perhaps incorrectly, but I'm making the assumption that exclude
2335	* is actually want is going to try and move there. We need this info	2163	* is actually want is going to try and move there. We need this info
2336	* because we have to know what movement the thing looking to move	2164	* because we have to know what movement the thing looking to move
2337	* there is capable of.	2165	* there is capable of.
2338	*/	2166	*/
2339		2167	int
2340	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2168	find_dir (maptile *m, int x, int y, object *exclude)
		2169	{
2341	int i,max=SIZEOFFREE, mflags;	2170	int max = SIZEOFFREE, mflags;
2342	sint16 nx, ny;
2343	object *tmp;
2344	mapstruct *mp;
2345	MoveType blocked, move_type;	2171	MoveType move_type;
2346		2172
2347	if (exclude && exclude->head) {	2173	if (exclude && exclude->head_ () != exclude)
		2174	{
2348	exclude = exclude->head;	2175	exclude = exclude->head;
2349	move_type = exclude->move_type;	2176	move_type = exclude->move_type;
2350	} else {	2177	}
		2178	else
		2179	{
2351	/* If we don't have anything, presume it can use all movement types. */	2180	/* If we don't have anything, presume it can use all movement types. */
2352	move_type=MOVE_ALL;	2181	move_type = MOVE_ALL;
2353	}
2354
2355	for(i=1;i<max;i++) {
2356	mp = m;
2357	nx = x + freearr_x[i];
2358	ny = y + freearr_y[i];
2359
2360	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);
2361	if (mflags & P_OUT_OF_MAP) {
2362	max = maxfree[i];
2363	} else {
2364	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2365
2366	if ((move_type & blocked) == move_type) {
2367	max=maxfree[i];
2368	} else if (mflags & P_IS_ALIVE) {
2369	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {
2370	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&
2371	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {
2372	break;
2373	}
2374	}
2375	if(tmp) {
2376	return freedir[i];
2377	}
2378	}	2182	}
2379	}	2183
		2184	for (int i = 1; i < max; i++)
2380	}	2185	{
		2186	mapxy pos (m, x, y);
		2187	pos.move (i);
		2188
		2189	if (!pos.normalise ())
		2190	max = maxfree[i];
		2191	else
		2192	{
		2193	mapspace &ms = *pos;
		2194
		2195	if ((move_type & ms.move_block) == move_type)
		2196	max = maxfree [i];
		2197	else if (ms.flags () & P_IS_ALIVE)
		2198	{
		2199	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2200	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
		2201	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
		2202	return freedir [i];
		2203	}
		2204	}
		2205	}
		2206
2381	return 0;	2207	return 0;
2382	}	2208	}
2383		2209
2384	/*	2210	/*
2385	* distance(object 1, object 2) will return the square of the	2211	* distance(object 1, object 2) will return the square of the
2386	* distance between the two given objects.	2212	* distance between the two given objects.
2387	*/	2213	*/
2388		2214	int
2389	int distance(const object *ob1, const object *ob2) {	2215	distance (const object *ob1, const object *ob2)
2390	int i;	2216	{
2391	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2217	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2392	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2393	return i;
2394	}	2218	}
2395		2219
2396	/*	2220	/*
2397	* find_dir_2(delta-x,delta-y) will return a direction in which	2221	* find_dir_2(delta-x,delta-y) will return a direction in which
2398	* an object which has subtracted the x and y coordinates of another	2222	* an object which has subtracted the x and y coordinates of another
2399	* object, needs to travel toward it.	2223	* object, needs to travel toward it.
2400	*/	2224	*/
2401		2225	int
2402	int find_dir_2(int x, int y) {	2226	find_dir_2 (int x, int y)
		2227	{
2403	int q;	2228	int q;
2404		2229
2405	if(y)	2230	if (y)
2406	q=x*100/y;	2231	q = x * 100 / y;
2407	else if (x)	2232	else if (x)
2408	q= -300*x;	2233	q = -300 * x;
2409	else	2234	else
2410	return 0;	2235	return 0;
2411		2236
2412	if(y>0) {	2237	if (y > 0)
		2238	{
2413	if(q < -242)	2239	if (q < -242)
2414	return 3 ;	2240	return 3;
2415	if (q < -41)	2241	if (q < -41)
2416	return 2 ;	2242	return 2;
2417	if (q < 41)	2243	if (q < 41)
2418	return 1 ;	2244	return 1;
2419	if (q < 242)	2245	if (q < 242)
2420	return 8 ;	2246	return 8;
2421	return 7 ;	2247	return 7;
2422	}	2248	}
2423		2249
2424	if (q < -242)	2250	if (q < -242)
2425	return 7 ;	2251	return 7;
2426	if (q < -41)	2252	if (q < -41)
2427	return 6 ;	2253	return 6;
2428	if (q < 41)	2254	if (q < 41)
2429	return 5 ;	2255	return 5;
2430	if (q < 242)	2256	if (q < 242)
2431	return 4 ;	2257	return 4;
2432		2258
2433	return 3 ;	2259	return 3;
2434	}
2435
2436	/*
2437	* absdir(int): Returns a number between 1 and 8, which represent
2438	* the "absolute" direction of a number (it actually takes care of
2439	* "overflow" in previous calculations of a direction).
2440	*/
2441
2442	int absdir(int d) {
2443	while(d<1) d+=8;
2444	while(d>8) d-=8;
2445	return d;
2446	}	2260	}
2447		2261
2448	/*	2262	/*
2449	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2263	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2450	* between two directions (which are expected to be absolute (see absdir())	2264	* between two directions (which are expected to be absolute (see absdir())
2451	*/	2265	*/
2452		2266	int
2453	int dirdiff(int dir1, int dir2) {	2267	dirdiff (int dir1, int dir2)
		2268	{
2454	int d;	2269	int d;
		2270
2455	d = abs(dir1 - dir2);	2271	d = abs (dir1 - dir2);
2456	if(d>4)	2272	if (d > 4)
2457	d = 8 - d;	2273	d = 8 - d;
		2274
2458	return d;	2275	return d;
2459	}	2276	}
2460		2277
2461	/* peterm:	2278	/* peterm:
2462	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2279	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2465	* This basically means that if direction is 15, then it could either go	2282	* This basically means that if direction is 15, then it could either go
2466	* direction 4, 14, or 16 to get back to where we are.	2283	* direction 4, 14, or 16 to get back to where we are.
2467	* Moved from spell_util.c to object.c with the other related direction	2284	* Moved from spell_util.c to object.c with the other related direction
2468	* functions.	2285	* functions.
2469	*/	2286	*/
2470
2471	int reduction_dir[SIZEOFFREE][3] = {	2287	static const int reduction_dir[SIZEOFFREE][3] = {
2472	{0,0,0}, /* 0 */	2288	{0, 0, 0}, /* 0 */
2473	{0,0,0}, /* 1 */	2289	{0, 0, 0}, /* 1 */
2474	{0,0,0}, /* 2 */	2290	{0, 0, 0}, /* 2 */
2475	{0,0,0}, /* 3 */	2291	{0, 0, 0}, /* 3 */
2476	{0,0,0}, /* 4 */	2292	{0, 0, 0}, /* 4 */
2477	{0,0,0}, /* 5 */	2293	{0, 0, 0}, /* 5 */
2478	{0,0,0}, /* 6 */	2294	{0, 0, 0}, /* 6 */
2479	{0,0,0}, /* 7 */	2295	{0, 0, 0}, /* 7 */
2480	{0,0,0}, /* 8 */	2296	{0, 0, 0}, /* 8 */
2481	{8,1,2}, /* 9 */	2297	{8, 1, 2}, /* 9 */
2482	{1,2,-1}, /* 10 */	2298	{1, 2, -1}, /* 10 */
2483	{2,10,12}, /* 11 */	2299	{2, 10, 12}, /* 11 */
2484	{2,3,-1}, /* 12 */	2300	{2, 3, -1}, /* 12 */
2485	{2,3,4}, /* 13 */	2301	{2, 3, 4}, /* 13 */
2486	{3,4,-1}, /* 14 */	2302	{3, 4, -1}, /* 14 */
2487	{4,14,16}, /* 15 */	2303	{4, 14, 16}, /* 15 */
2488	{5,4,-1}, /* 16 */	2304	{5, 4, -1}, /* 16 */
2489	{4,5,6}, /* 17 */	2305	{4, 5, 6}, /* 17 */
2490	{6,5,-1}, /* 18 */	2306	{6, 5, -1}, /* 18 */
2491	{6,20,18}, /* 19 */	2307	{6, 20, 18}, /* 19 */
2492	{7,6,-1}, /* 20 */	2308	{7, 6, -1}, /* 20 */
2493	{6,7,8}, /* 21 */	2309	{6, 7, 8}, /* 21 */
2494	{7,8,-1}, /* 22 */	2310	{7, 8, -1}, /* 22 */
2495	{8,22,24}, /* 23 */	2311	{8, 22, 24}, /* 23 */
2496	{8,1,-1}, /* 24 */	2312	{8, 1, -1}, /* 24 */
2497	{24,9,10}, /* 25 */	2313	{24, 9, 10}, /* 25 */
2498	{9,10,-1}, /* 26 */	2314	{9, 10, -1}, /* 26 */
2499	{10,11,-1}, /* 27 */	2315	{10, 11, -1}, /* 27 */
2500	{27,11,29}, /* 28 */	2316	{27, 11, 29}, /* 28 */
2501	{11,12,-1}, /* 29 */	2317	{11, 12, -1}, /* 29 */
2502	{12,13,-1}, /* 30 */	2318	{12, 13, -1}, /* 30 */
2503	{12,13,14}, /* 31 */	2319	{12, 13, 14}, /* 31 */
2504	{13,14,-1}, /* 32 */	2320	{13, 14, -1}, /* 32 */
2505	{14,15,-1}, /* 33 */	2321	{14, 15, -1}, /* 33 */
2506	{33,15,35}, /* 34 */	2322	{33, 15, 35}, /* 34 */
2507	{16,15,-1}, /* 35 */	2323	{16, 15, -1}, /* 35 */
2508	{17,16,-1}, /* 36 */	2324	{17, 16, -1}, /* 36 */
2509	{18,17,16}, /* 37 */	2325	{18, 17, 16}, /* 37 */
2510	{18,17,-1}, /* 38 */	2326	{18, 17, -1}, /* 38 */
2511	{18,19,-1}, /* 39 */	2327	{18, 19, -1}, /* 39 */
2512	{41,19,39}, /* 40 */	2328	{41, 19, 39}, /* 40 */
2513	{19,20,-1}, /* 41 */	2329	{19, 20, -1}, /* 41 */
2514	{20,21,-1}, /* 42 */	2330	{20, 21, -1}, /* 42 */
2515	{20,21,22}, /* 43 */	2331	{20, 21, 22}, /* 43 */
2516	{21,22,-1}, /* 44 */	2332	{21, 22, -1}, /* 44 */
2517	{23,22,-1}, /* 45 */	2333	{23, 22, -1}, /* 45 */
2518	{45,47,23}, /* 46 */	2334	{45, 47, 23}, /* 46 */
2519	{23,24,-1}, /* 47 */	2335	{23, 24, -1}, /* 47 */
2520	{24,9,-1}}; /* 48 */	2336	{24, 9, -1}
		2337	}; /* 48 */
2521		2338
2522	/* Recursive routine to step back and see if we can	2339	/* Recursive routine to step back and see if we can
2523	* find a path to that monster that we found. If not,	2340	* find a path to that monster that we found. If not,
2524	* we don't bother going toward it. Returns 1 if we	2341	* we don't bother going toward it. Returns 1 if we
2525	* can see a direct way to get it	2342	* can see a direct way to get it
2526	* Modified to be map tile aware -.MSW	2343	* Modified to be map tile aware -.MSW
2527	*/	2344	*/
2528		2345	int
2529
2530	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2346	can_see_monsterP (maptile *m, int x, int y, int dir)
		2347	{
2531	sint16 dx, dy;	2348	sint16 dx, dy;
2532	int mflags;	2349	int mflags;
2533		2350
		2351	if (dir < 0)
2534	if(dir<0) return 0; /* exit condition: invalid direction */	2352	return 0; /* exit condition: invalid direction */
2535		2353
2536	dx = x + freearr_x[dir];	2354	dx = x + freearr_x[dir];
2537	dy = y + freearr_y[dir];	2355	dy = y + freearr_y[dir];
2538		2356
2539	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2357	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2540		2358
2541	/* This functional arguably was incorrect before - it was	2359	/* This functional arguably was incorrect before - it was
2542	* checking for P_WALL - that was basically seeing if	2360	* checking for P_WALL - that was basically seeing if
2543	* we could move to the monster - this is being more	2361	* we could move to the monster - this is being more
2544	* literal on if we can see it. To know if we can actually	2362	* literal on if we can see it. To know if we can actually
2545	* move to the monster, we'd need the monster passed in or	2363	* move to the monster, we'd need the monster passed in or
2546	* at least its move type.	2364	* at least its move type.
2547	*/	2365	*/
2548	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2366	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2367	return 0;
2549		2368
2550	/* yes, can see. */	2369	/* yes, can see. */
2551	if(dir < 9) return 1;	2370	if (dir < 9)
		2371	return 1;
		2372
2552	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2373	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2553	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2374	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2554	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2375	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2555	}	2376	}
2556		2377
2557
2558
2559	/*	2378	/*
2560	* can_pick(picker, item): finds out if an object is possible to be	2379	* can_pick(picker, item): finds out if an object is possible to be
2561	* picked up by the picker. Returnes 1 if it can be	2380	* picked up by the picker. Returnes 1 if it can be
2562	* picked up, otherwise 0.	2381	* picked up, otherwise 0.
2563	*	2382	*
2564	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2383	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2565	* core dumps if they do.	2384	* core dumps if they do.
2566	*	2385	*
2567	* Add a check so we can't pick up invisible objects (0.93.8)	2386	* Add a check so we can't pick up invisible objects (0.93.8)
2568	*/	2387	*/
2569		2388	int
2570	int can_pick(const object *who, const object *item) {	2389	can_pick (const object *who, const object *item)
2571	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2390	{
2572	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2391	return /*who->flag [FLAG_WIZ]|| */
2573	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2392	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2574	(who->type==PLAYER||item->weight<who->weight/3));	2393	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2575	}	2394	}
2576
2577		2395
2578	/*	2396	/*
2579	* create clone from object to another	2397	* create clone from object to another
2580	*/	2398	*/
2581	object *object_create_clone (object *asrc) {	2399	object *
2582	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2400	object::deep_clone ()
		2401	{
		2402	assert (("deep_clone called on non-head object", is_head ()));
2583		2403
2584	if(!asrc) return NULL;	2404	object *dst = clone ();
2585	src = asrc;
2586	if(src->head)
2587	src = src->head;
2588		2405
2589	prev = NULL;	2406	object *prev = dst;
2590	for(part = src; part; part = part->more) {	2407	for (object *part = this->more; part; part = part->more)
2591	tmp = get_object();	2408	{
2592	copy_object(part,tmp);	2409	object *tmp = part->clone ();
2593	tmp->x -= src->x;
2594	tmp->y -= src->y;
2595	if(!part->head) {
2596	dst = tmp;
2597	tmp->head = NULL;
2598	} else {
2599	tmp->head = dst;	2410	tmp->head = dst;
2600	}
2601	tmp->more = NULL;
2602	if(prev)
2603	prev->more = tmp;	2411	prev->more = tmp;
2604	prev = tmp;	2412	prev = tmp;
2605	}	2413	}
2606	/*** copy inventory ***/	2414
2607	for(item = src->inv; item; item = item->below) {	2415	for (object *item = inv; item; item = item->below)
2608	(void) insert_ob_in_ob(object_create_clone(item),dst);	2416	insert_ob_in_ob (item->deep_clone (), dst);
2609	}
2610		2417
2611	return dst;	2418	return dst;
2612	}
2613
2614	/* return true if the object was destroyed, 0 otherwise */
2615	int was_destroyed (const object *op, tag_t old_tag)
2616	{
2617	/* checking for FLAG_FREED isn't necessary, but makes this function more
2618	* robust */
2619	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2620	}
2621
2622	/* GROS - Creates an object using a string representing its content. */
2623	/* Basically, we save the content of the string to a temp file, then call */
2624	/* load_object on it. I admit it is a highly inefficient way to make things, */
2625	/* but it was simple to make and allows reusing the load_object function. */
2626	/* Remember not to use load_object_str in a time-critical situation. */
2627	/* Also remember that multiparts objects are not supported for now. */
2628
2629	object* load_object_str(const char *obstr)
2630	{
2631	object *op;
2632	FILE *tempfile;
2633	char filename[MAX_BUF];
2634	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2635	tempfile=fopen(filename,"w");
2636	if (tempfile == NULL)
2637	{
2638	LOG(llevError,"Error - Unable to access load object temp file\n");
2639	return NULL;
2640	};
2641	fprintf(tempfile,obstr);
2642	fclose(tempfile);
2643
2644	op=get_object();
2645
2646	tempfile=fopen(filename,"r");
2647	if (tempfile == NULL)
2648	{
2649	LOG(llevError,"Error - Unable to read object temp file\n");
2650	return NULL;
2651	};
2652	load_object(tempfile,op,LO_NEWFILE,0);
2653	LOG(llevDebug," load str completed, object=%s\n",op->name);
2654	CLEAR_FLAG(op,FLAG_REMOVED);
2655	fclose(tempfile);
2656	return op;
2657	}	2419	}
2658		2420
2659	/* This returns the first object in who's inventory that	2421	/* This returns the first object in who's inventory that
2660	* has the same type and subtype match.	2422	* has the same type and subtype match.
2661	* returns NULL if no match.	2423	* returns NULL if no match.
2662	*/	2424	*/
		2425	object *
2663	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2426	find_obj_by_type_subtype (const object *who, int type, int subtype)
2664	{	2427	{
2665	object *tmp;
2666
2667	for (tmp=who->inv; tmp; tmp=tmp->below)	2428	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2668	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2429	if (tmp->type == type && tmp->subtype == subtype)
		2430	return tmp;
2669		2431
2670	return NULL;	2432	return 0;
2671	}	2433	}
2672		2434
2673	/* If ob has a field named key, return the link from the list,	2435	shstr_tmp
2674	* otherwise return NULL.	2436	object::kv_get (shstr_tmp key) const
2675	*	2437	{
2676	* key must be a passed in shared string - otherwise, this won't	2438	for (key_value *kv = key_values; kv; kv = kv->next)
2677	* do the desired thing.	2439	if (kv->key == key)
2678	*/	2440	return kv->value;
2679	key_value * get_ob_key_link(const object * ob, const char * key) {	2441
2680	key_value * link;	2442	return shstr ();
		2443	}
		2444
		2445	void
		2446	object::kv_set (shstr_tmp key, shstr_tmp value)
		2447	{
		2448	for (key_value *kv = key_values; kv; kv = kv->next)
		2449	if (kv->key == key)
		2450	{
		2451	kv->value = value;
		2452	return;
		2453	}
		2454
		2455	key_value *kv = new key_value;
		2456
		2457	kv->next = key_values;
		2458	kv->key = key;
		2459	kv->value = value;
		2460
		2461	key_values = kv;
		2462	}
		2463
		2464	void
		2465	object::kv_del (shstr_tmp key)
		2466	{
		2467	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2468	if ((*kvp)->key == key)
		2469	{
		2470	key_value *kv = *kvp;
		2471	*kvp = (*kvp)->next;
		2472	delete kv;
		2473	return;
		2474	}
		2475	}
		2476
		2477	object::depth_iterator::depth_iterator (object *container)
		2478	: iterator_base (container)
		2479	{
		2480	while (item->inv)
		2481	item = item->inv;
		2482	}
		2483
		2484	void
		2485	object::depth_iterator::next ()
		2486	{
		2487	if (item->below)
2681		2488	{
2682	for (link = ob->key_values; link != NULL; link = link->next) {	2489	item = item->below;
2683	if (link->key == key) {	2490
2684	return link;	2491	while (item->inv)
		2492	item = item->inv;
		2493	}
		2494	else
		2495	item = item->env;
		2496	}
		2497
		2498	const char *
		2499	object::flag_desc (char *desc, int len) const
		2500	{
		2501	char *p = desc;
		2502	bool first = true;
		2503
		2504	*p = 0;
		2505
		2506	for (int i = 0; i < NUM_FLAGS; i++)
		2507	{
		2508	if (len <= 10) // magic constant!
		2509	{
		2510	snprintf (p, len, ",...");
		2511	break;
2685	}	2512	}
2686	}
2687
2688	return NULL;
2689	}
2690		2513
2691	/*	2514	if (flag [i])
2692	* Returns the value of op has an extra_field for key, or NULL.
2693	*
2694	* The argument doesn't need to be a shared string.
2695	*
2696	* The returned string is shared.
2697	*/
2698	const char * get_ob_key_value(const object * op, const char * const key) {
2699	key_value * link;
2700	const char * canonical_key;
2701
2702	canonical_key = find_string(key);
2703
2704	if (canonical_key == NULL) {
2705	/* 1. There being a field named key on any object
2706	* implies there'd be a shared string to find.
2707	* 2. Since there isn't, no object has this field.
2708	* 3. Therefore, *this* object doesn't have this field.
2709	*/	2515	{
2710	return NULL;	2516	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2711	}	2517	len -= cnt;
2712		2518	p += cnt;
2713	/* This is copied from get_ob_key_link() above -	2519	first = false;
2714	* only 4 lines, and saves the function call overhead.
2715	*/
2716	for (link = op->key_values; link != NULL; link = link->next) {
2717	if (link->key == canonical_key) {
2718	return link->value;
2719	}	2520	}
2720	}	2521	}
		2522
		2523	return desc;
		2524	}
		2525
		2526	// return a suitable string describing an object in enough detail to find it
		2527	const char *
		2528	object::debug_desc (char *info) const
		2529	{
		2530	char flagdesc[512];
		2531	char info2[256 * 4];
		2532	char *p = info;
		2533
		2534	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2535	count,
		2536	uuid.c_str (),
		2537	&name,
		2538	title ? ",title:\"" : "",
		2539	title ? (const char *)title : "",
		2540	title ? "\"" : "",
		2541	flag_desc (flagdesc, 512), type);
		2542
		2543	if (!flag[FLAG_REMOVED] && env)
		2544	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2545
		2546	if (map)
		2547	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2548
		2549	return info;
		2550	}
		2551
		2552	const char *
		2553	object::debug_desc () const
		2554	{
		2555	static char info[3][256 * 4];
		2556	static int info_idx;
		2557
		2558	return debug_desc (info [++info_idx % 3]);
		2559	}
		2560
		2561	struct region *
		2562	object::region () const
		2563	{
		2564	return map ? map->region (x, y)
		2565	: region::default_region ();
		2566	}
		2567
		2568	void
		2569	object::open_container (object *new_container)
		2570	{
		2571	if (container == new_container)
2721	return NULL;	2572	return;
2722	}
2723		2573
		2574	object *old_container = container;
2724		2575
2725	/*	2576	if (old_container)
2726	* Updates the canonical_key in op to value.
2727	*
2728	* canonical_key is a shared string (value doesn't have to be).
2729	*
2730	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2731	* keys.
2732	*
2733	* Returns TRUE on success.
2734	*/
2735	int set_ob_key_value_s(object * op, const char * canonical_key, const char * value, int add_key) {
2736	key_value * field = NULL, *last=NULL;
2737		2577	{
2738	for (field=op->key_values; field != NULL; field=field->next) {	2578	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2739	if (field->key != canonical_key) {	2579	return;
2740	last = field;	2580
2741	continue;	2581	#if 0
2742	}	2582	// remove the "Close old_container" object.
2743		2583	if (object *closer = old_container->inv)
2744	if (field->value) FREE_AND_CLEAR_STR(field->value);	2584	if (closer->type == CLOSE_CON)
2745	if (value)	2585	closer->destroy ();
2746	field->value = add_string(value);	2586	#endif
2747	else {	2587
2748	/* Basically, if the archetype has this key set,	2588	// make sure the container is available
2749	* we need to store the null value so when we save	2589	esrv_send_item (this, old_container);
2750	* it, we save the empty value so that when we load,	2590
2751	* we get this value back again.	2591	old_container->flag [FLAG_APPLIED] = false;
2752	*/	2592	container = 0;
2753	if (get_ob_key_link(&op->arch->clone, canonical_key))	2593
2754	field->value = NULL;	2594	// client needs item update to make it work, client bug requires this to be separate
2755	else {	2595	esrv_update_item (UPD_FLAGS, this, old_container);
2756	/* Delete this link */	2596
2757	if (field->key) FREE_AND_CLEAR_STR(field->key);	2597	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
2758	if (field->value) FREE_AND_CLEAR_STR(field->value);	2598	play_sound (sound_find ("chest_close"));
2759	if (last) last->next = field->next;
2760	else op->key_values = field->next;
2761	free(field);
2762	}	2599	}
2763	}
2764	return TRUE;
2765	}
2766	/* IF we get here, key doesn't exist */
2767		2600
2768	/* No field, we'll have to add it. */	2601	if (new_container)
2769		2602	{
2770	if (!add_key) {	2603	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
2771	return FALSE;	2604	return;
2772	}	2605
2773	/* There isn't any good reason to store a null	2606	// TODO: this does not seem to serve any purpose anymore?
2774	* value in the key/value list. If the archetype has	2607	#if 0
2775	* this key, then we should also have it, so shouldn't	2608	// insert the "Close Container" object.
2776	* be here. If user wants to store empty strings,	2609	if (archetype *closer = new_container->other_arch)
2777	* should pass in ""	2610	{
2778	*/	2611	object *closer = new_container->other_arch->instance ();
2779	if (value == NULL) return TRUE;	2612	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2613	new_container->insert (closer);
		2614	}
		2615	#endif
		2616
		2617	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2618
		2619	// make sure the container is available, client bug requires this to be separate
		2620	esrv_send_item (this, new_container);
		2621
		2622	new_container->flag [FLAG_APPLIED] = true;
		2623	container = new_container;
		2624
		2625	// client needs flag change
		2626	esrv_update_item (UPD_FLAGS, this, new_container);
		2627	esrv_send_inventory (this, new_container);
		2628	play_sound (sound_find ("chest_open"));
2780		2629	}
2781	field = (key_value *) malloc(sizeof(key_value));	2630	// else if (!old_container->env && contr && contr->ns)
		2631	// contr->ns->floorbox_reset ();
		2632	}
		2633
		2634	object *
		2635	object::force_find (shstr_tmp name)
		2636	{
		2637	/* cycle through his inventory to look for the MARK we want to
		2638	* place
		2639	*/
		2640	for (object *tmp = inv; tmp; tmp = tmp->below)
		2641	if (tmp->type == FORCE && tmp->slaying == name)
		2642	return splay (tmp);
		2643
		2644	return 0;
		2645	}
		2646
		2647	//-GPL
		2648
		2649	void
		2650	object::force_set_timer (int duration)
		2651	{
		2652	this->duration = 1;
		2653	this->speed_left = -1.f;
		2654
		2655	this->set_speed (duration ? 1.f / duration : 0.f);
		2656	}
		2657
		2658	object *
		2659	object::force_add (shstr_tmp name, int duration)
		2660	{
		2661	if (object *force = force_find (name))
		2662	force->destroy ();
		2663
		2664	object *force = get_archetype (FORCE_NAME);
		2665
		2666	force->slaying = name;
		2667	force->force_set_timer (duration);
		2668	force->flag [FLAG_APPLIED] = true;
		2669
		2670	return insert (force);
		2671	}
		2672
		2673	void
		2674	object::play_sound (faceidx sound) const
		2675	{
		2676	if (!sound)
		2677	return;
		2678
		2679	if (is_on_map ())
		2680	map->play_sound (sound, x, y);
		2681	else if (object *pl = in_player ())
		2682	pl->contr->play_sound (sound);
		2683	}
		2684
		2685	void
		2686	object::say_msg (const char *msg) const
		2687	{
		2688	if (is_on_map ())
		2689	map->say_msg (msg, x, y);
		2690	else if (object *pl = in_player ())
		2691	pl->contr->play_sound (sound);
		2692	}
		2693
		2694	void
		2695	object::make_noise ()
		2696	{
		2697	// we do not model noise in the map, so instead put
		2698	// a temporary light into the noise source
		2699	// could use the map instead, but that's less reliable for our
		2700	// goal, which is to make invisibility a bit harder to exploit
		2701
		2702	// currently only works sensibly for players
		2703	if (!is_player ())
		2704	return;
		2705
		2706	// find old force, or create new one
		2707	object *force = force_find (shstr_noise_force);
		2708
		2709	if (force)
		2710	force->speed_left = -1.f; // patch old speed up
		2711	else
2782		2712	{
2783	field->key = add_refcount(canonical_key);	2713	force = archetype::get (shstr_noise_force);
2784	field->value = add_string(value);	2714
2785	/* Usual prepend-addition. */	2715	force->slaying = shstr_noise_force;
2786	field->next = op->key_values;	2716	force->stats.food = 1;
2787	op->key_values = field;	2717	force->speed_left = -1.f;
		2718
		2719	force->set_speed (1.f / 4.f);
		2720	force->flag [FLAG_IS_USED_UP] = true;
		2721	force->flag [FLAG_APPLIED] = true;
		2722
		2723	insert (force);
2788		2724	}
		2725	}
		2726
		2727	void object::change_move_type (MoveType mt)
		2728	{
		2729	if (move_type == mt)
2789	return TRUE;	2730	return;
2790	}
2791		2731
2792	/*	2732	if (is_on_map ())
2793	* Updates the key in op to value.
2794	*
2795	* If add_key is FALSE, this will only update existing keys,
2796	* and not add new ones.
2797	* In general, should be little reason FALSE is ever passed in for add_key
2798	*
2799	* Returns TRUE on success.
2800	*/
2801	int set_ob_key_value(object * op, const char * key, const char * value, int add_key) {
2802	const char * canonical_key = NULL;
2803	int floating_ref = FALSE;
2804	int ret;
2805		2733	{
2806	/* HACK This mess is to make sure set_ob_value() passes a shared string	2734	// we are on the map, so handle move_on/off effects
2807	* to get_ob_key_link(), without leaving a leaked refcount.	2735	remove ();
2808	*/	2736	move_type = mt;
		2737	map->insert (this, x, y, this);
2809		2738	}
2810	canonical_key = find_string(key);	2739	else
2811	if (canonical_key == NULL) {	2740	move_type = mt;
2812	canonical_key = add_string(key);	2741	}
2813	floating_ref = TRUE;	2742
2814	}	2743	/* object should be a player.
2815		2744	* we return the object the player has marked with the 'mark' command
2816	ret = set_ob_key_value_s(op, canonical_key, value, add_key);	2745	* below. If no match is found (or object has changed), we return
2817		2746	* NULL. We leave it up to the calling function to print messages if
2818	if (floating_ref) {	2747	* nothing is found.
2819	free_string(canonical_key);	2748	*/
2820	}	2749	object *
2821		2750	object::mark () const
		2751	{
		2752	if (contr && contr->mark && contr->mark->env == this)
		2753	return contr->mark;
		2754	else
2822	return ret;	2755	return 0;
2823	}	2756	}
		2757

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