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Comparing deliantra/server/common/object.C (file contents):
Revision 1.9 by root, Wed Aug 30 06:06:26 2006 UTC vs.
Revision 1.318 by root, Sat Apr 3 02:27:24 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 1.9 2006/08/30 06:06:26 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
		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;
		38
		39	objectvec objects;
		40	activevec actives;
		41
		42	//+GPL
		43
57	short freearr_x[SIZEOFFREE]=	44	short freearr_x[SIZEOFFREE] = {
58	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,	45	0,
		46	0, 1, 1, 1, 0, -1, -1, -1,
		47	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
59	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	48	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		49	};
60	short freearr_y[SIZEOFFREE]=	50	short freearr_y[SIZEOFFREE] = {
61	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	51	0,
		52	-1, -1, 0, 1, 1, 1, 0, -1,
		53	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
62	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	54	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
63	int maxfree[SIZEOFFREE]=	55	};
64	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,
65	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};
66	int freedir[SIZEOFFREE]= {	56	int freedir[SIZEOFFREE] = {
67	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	57	0,
68	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	58	1, 2, 3, 4, 5, 6, 7, 8,
		59	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		60	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		61	};
69		62
		63	static int maxfree[SIZEOFFREE] = {
		64	0,
		65	9, 10, 13, 14, 17, 18, 21, 22,
		66	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		67	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	};
		69
		70	static void
		71	write_uuid (uval64 skip, bool sync)
		72	{
		73	CALL_BEGIN (2);
		74	CALL_ARG_SV (newSVval64 (skip));
		75	CALL_ARG_SV (boolSV (sync));
		76	CALL_CALL ("cf::write_uuid", G_DISCARD);
		77	CALL_END;
		78	}
		79
		80	static void
		81	read_uuid ()
		82	{
		83	char filename[MAX_BUF];
		84
		85	sprintf (filename, "%s/uuid", settings.localdir);
		86
		87	seq_next_save = 0;
		88
		89	FILE *fp;
		90
		91	if (!(fp = fopen (filename, "r")))
		92	{
		93	if (errno == ENOENT)
		94	{
		95	LOG (llevInfo, "RESET uid to 1\n");
		96	UUID::cur.seq = 0;
		97	write_uuid (UUID_GAP, true);
		98	return;
		99	}
		100
		101	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		102	_exit (1);
		103	}
		104
		105	char buf [UUID::MAX_LEN];
		106	buf[0] = 0;
		107	fgets (buf, sizeof (buf), fp);
		108
		109	if (!UUID::cur.parse (buf))
		110	{
		111	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		112	_exit (1);
		113	}
		114
		115	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		116
		117	write_uuid (UUID_GAP, true);
		118	fclose (fp);
		119	}
		120
		121	UUID
		122	UUID::gen ()
		123	{
		124	UUID uid;
		125
		126	uid.seq = ++cur.seq;
		127
		128	if (expect_false (cur.seq >= seq_next_save))
		129	{
		130	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		131	write_uuid (UUID_GAP, false);
		132	}
		133
		134
		135	return uid;
		136	}
		137
		138	void
		139	UUID::init ()
		140	{
		141	read_uuid ();
		142	}
		143
		144	bool
		145	UUID::parse (const char *s)
		146	{
		147	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		148	return false;
		149
		150	seq = 0;
		151
		152	while (*s != '>')
		153	{
		154	if (*s < '0')
		155	return false;
		156
		157	// this gives nice branchless code with gcc
		158	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		159	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		160
		161	seq = (seq << 4) | digit;
		162
		163	++s;
		164	}
		165
		166	return true;
		167	}
		168
		169	char *
		170	UUID::append (char *buf) const
		171	{
		172	*buf++ = '<';
		173	*buf++ = '1';
		174	*buf++ = '.';
		175
		176	uint64_t seq = this->seq;
		177	const int bits = 64;
		178	char nz = 0;
		179	static const char tohex [] = "0123456789abcdef";
		180
		181	// assert (len >= 3 + bits / 4 + 1 + 1);
		182	for (int i = bits / 4; --i; )
		183	{
		184	uint8_t digit = seq >> (bits - 4);
		185
		186	*buf = tohex [digit];
		187	nz |= digit;
		188	buf += nz ? 1 : 0;
		189	seq <<= 4;
		190	}
		191
		192	// last digit is special - always emit
		193	uint8_t digit = seq >> (bits - 4);
		194	*buf++ = tohex [digit];
		195
		196	*buf++ = '>';
		197
		198	return buf;
		199	}
		200
		201	char *
		202	UUID::c_str () const
		203	{
		204	static char buf [MAX_LEN];
		205	*append (buf) = 0;
		206	return buf;
		207	}
70		208
71	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	209	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		210	static bool
72	static int compare_ob_value_lists_one(const object * wants, const object * has) {	211	compare_ob_value_lists_one (const object *wants, const object *has)
73	key_value * wants_field;	212	{
74
75	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	213	/* n-squared behaviour (see kv_get), but I'm hoping both
76	* objects with lists are rare, and lists stay short. If not, use a	214	* objects with lists are rare, and lists stay short. If not, use a
77	* different structure or at least keep the lists sorted...	215	* different structure or at least keep the lists sorted...
78	*/	216	*/
79		217
80	/* For each field in wants, */	218	/* For each field in wants, */
81	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	219	for (key_value *kv = wants->key_values; kv; kv = kv->next)
82	key_value * has_field;	220	if (has->kv_get (kv->key) != kv->value)
83		221	return false;
84	/* Look for a field in has with the same key. */	222
85	has_field = get_ob_key_link(has, wants_field->key);
86
87	if (has_field == NULL) {
88	/* No field with that name. */
89	return FALSE;
90	}
91
92	/* Found the matching field. */
93	if (has_field->value != wants_field->value) {
94	/* Values don't match, so this half of the comparison is false. */
95	return FALSE;
96	}
97
98	/* If we get here, we found a match. Now for the next field in wants. */
99	}
100
101	/* If we get here, every field in wants has a matching field in has. */	223	/* If we get here, every field in wants has a matching field in has. */
102	return TRUE;	224	return true;
103	}	225	}
104		226
105	/* Returns TRUE if ob1 has the same key_values as ob2. */	227	/* Returns TRUE if ob1 has the same key_values as ob2. */
		228	static bool
106	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	229	compare_ob_value_lists (const object *ob1, const object *ob2)
		230	{
107	/* However, there may be fields in has which aren't partnered in wants,	231	/* However, there may be fields in has which aren't partnered in wants,
108	* so we need to run the comparison *twice*. :(	232	* so we need to run the comparison *twice*. :(
109	*/	233	*/
110	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	234	return compare_ob_value_lists_one (ob1, ob2)
		235	&& compare_ob_value_lists_one (ob2, ob1);
111	}	236	}
112		237
113	/* Function examines the 2 objects given to it, and returns true if	238	/* Function examines the 2 objects given to it, and returns true if
114	* they can be merged together.	239	* they can be merged together.
115	*	240	*
116	* Note that this function appears a lot longer than the macro it	241	* Note that this function appears a lot longer than the macro it
117	* replaces - this is mostly for clarity - a decent compiler should hopefully	242	* replaces - this is mostly for clarity - a decent compiler should hopefully
118	* reduce this to the same efficiency.	243	* reduce this to the same efficiency.
119	*	244	*
120	* Check nrof variable *before* calling CAN_MERGE()	245	* Check nrof variable *before* calling can_merge()
121	*	246	*
122	* Improvements made with merge: Better checking on potion, and also	247	* Improvements made with merge: Better checking on potion, and also
123	* check weight	248	* check weight
124	*/	249	*/
125		250	bool object::can_merge_slow (object *ob1, object *ob2)
126	int CAN_MERGE(object *ob1, object *ob2) {	251	{
127
128	/* A couple quicksanity checks */	252	/* A couple quick sanity checks */
129	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	253	if (ob1 == ob2
		254	|| ob1->type != ob2->type
		255	|| ob1->value != ob2->value
		256	|| ob1->name != ob2->name
		257	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
		258	return 0;
130		259
131	if (ob1->speed != ob2->speed) return 0;	260	/* Do not merge objects if nrof would overflow, assume nrof
		261	* is always 0 .. 2**31-1 */
		262	if (ob1->nrof > 0x7fffffff - ob2->nrof)
		263	return 0;
		264
		265	/* If the objects have been identified, set the BEEN_APPLIED flag.
		266	* This is to the comparison of the flags below will be OK. We
		267	* just can't ignore the been applied or identified flags, as they
		268	* are not equal - just if it has been identified, the been_applied
		269	* flags lose any meaning.
		270	*/
		271	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		272	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		273
		274	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		275	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		276
		277	if (ob1->arch->archname != ob2->arch->archname
		278	|| ob1->name != ob2->name
		279	|| ob1->title != ob2->title
		280	|| ob1->msg != ob2->msg
		281	|| ob1->weight != ob2->weight
		282	|| ob1->attacktype != ob2->attacktype
		283	|| ob1->magic != ob2->magic
		284	|| ob1->slaying != ob2->slaying
		285	|| ob1->skill != ob2->skill
		286	|| ob1->value != ob2->value
		287	|| ob1->animation_id != ob2->animation_id
		288	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
		289	|| ob1->client_type != ob2->client_type
		290	|| ob1->material != ob2->material
		291	|| ob1->lore != ob2->lore
		292	|| ob1->subtype != ob2->subtype
		293	|| ob1->move_type != ob2->move_type
		294	|| ob1->move_block != ob2->move_block
		295	|| ob1->move_allow != ob2->move_allow
		296	|| ob1->move_on != ob2->move_on
		297	|| ob1->move_off != ob2->move_off
		298	|| ob1->move_slow != ob2->move_slow
		299	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		300	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		301	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
		302	return 0;
		303
		304	if ((ob1->flag ^ ob2->flag)
		305	.reset (FLAG_INV_LOCKED)
		306	.reset (FLAG_REMOVED)
		307	.any ())
		308	return 0;
		309
		310	/* This is really a spellbook check - we should in general
		311	* not merge objects with real inventories, as splitting them
		312	* is hard.
		313	*/
		314	if (ob1->inv || ob2->inv)
		315	{
		316	if (!(ob1->inv && ob2->inv))
		317	return 0; /* inventories differ in length */
		318
		319	if (ob1->inv->below || ob2->inv->below)
		320	return 0; /* more than one object in inv */
		321
		322	if (!object::can_merge (ob1->inv, ob2->inv))
		323	return 0; /* inventory objects differ */
		324
		325	/* inventory ok - still need to check rest of this object to see
		326	* if it is valid.
		327	*/
		328	}
		329
		330	/* Don't merge objects that are applied. With the new 'body' code,
		331	* it is possible for most any character to have more than one of
		332	* some items equipped, and we don't want those to merge.
		333	*/
		334	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		335	return 0;
		336
132	/* Note sure why the following is the case - either the object has to	337	/* Note sure why the following is the case - either the object has to
133	* be animated or have a very low speed. Is this an attempted monster	338	* be animated or have a very low speed. Is this an attempted monster
134	* check?	339	* check?
135	*/	340	*/
136	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	341	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
		342	return 0;
		343
		344	switch (ob1->type)
		345	{
		346	case SCROLL:
		347	if (ob1->level != ob2->level)
		348	return 0;
		349	break;
		350	}
		351
		352	if (ob1->key_values || ob2->key_values)
		353	{
		354	/* At least one of these has key_values. */
		355	if ((!ob1->key_values) != (!ob2->key_values))
		356	return 0; /* One has fields, but the other one doesn't. */
		357
		358	if (!compare_ob_value_lists (ob1, ob2))
137	return 0;	359	return 0;
		360	}
138		361
139	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	362	if (ob1->self || ob2->self)
140	* value could not be stored in a sint32 (which unfortunately sometimes is
141	* used to store nrof).
142	*/
143	if (ob1->nrof+ob2->nrof >= 1UL<<31)
144	return 0;
145
146	/* This is really a spellbook check - really, we should
147	* check all objects in the inventory.
148	*/
149	if (ob1->inv || ob2->inv) {
150	/* if one object has inventory but the other doesn't, not equiv */
151	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
152
153	/* Now check to see if the two inventory objects could merge */
154	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
155
156	/* inventory ok - still need to check rest of this object to see
157	* if it is valid.
158	*/
159	}	363	{
		364	ob1->optimise ();
		365	ob2->optimise ();
160		366
161	/* If the objects have been identified, set the BEEN_APPLIED flag.	367	if (ob1->self || ob2->self)
162	* This is to the comparison of the flags below will be OK. We
163	* just can't ignore the been applied or identified flags, as they
164	* are not equal - just if it has been identified, the been_applied
165	* flags lose any meaning.
166	*/
167	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
168	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
169
170	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
171	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
172
173
174	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
175	* being locked in inventory should prevent merging.
176	* 0x4 in flags3 is CLIENT_SENT
177	*/
178	if ((ob1->arch != ob2->arch) ||
179	(ob1->flags[0] != ob2->flags[0]) ||
180	(ob1->flags[1] != ob2->flags[1]) ||
181	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
182	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
183	(ob1->name != ob2->name) ||
184	(ob1->title != ob2->title) ||
185	(ob1->msg != ob2->msg) ||
186	(ob1->weight != ob2->weight) ||
187	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
188	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
189	(ob1->attacktype != ob2->attacktype) ||
190	(ob1->magic != ob2->magic) ||
191	(ob1->slaying != ob2->slaying) ||
192	(ob1->skill != ob2->skill) ||
193	(ob1->value != ob2->value) ||
194	(ob1->animation_id != ob2->animation_id) ||
195	(ob1->client_type != ob2->client_type) ||
196	(ob1->materialname != ob2->materialname) ||
197	(ob1->lore != ob2->lore) ||
198	(ob1->subtype != ob2->subtype) ||
199	(ob1->move_type != ob2->move_type) ||
200	(ob1->move_block != ob2->move_block) ||
201	(ob1->move_allow != ob2->move_allow) ||
202	(ob1->move_on != ob2->move_on) ||
203	(ob1->move_off != ob2->move_off) ||
204	(ob1->move_slow != ob2->move_slow) ||
205	(ob1->move_slow_penalty != ob2->move_slow_penalty)
206	)	368	{
		369	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		370	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		371
		372	if (k1 != k2)
207	return 0;	373	return 0;
208		374
209	/* Don't merge objects that are applied. With the new 'body' code,	375	if (k1 == 0)
210	* it is possible for most any character to have more than one of
211	* some items equipped, and we don't want those to merge.
212	*/
213	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))
214	return 0;
215
216	switch (ob1->type) {
217	case SCROLL:
218	if (ob1->level != ob2->level) return 0;
219	break;
220
221	}
222	if (ob1->key_values != NULL || ob2->key_values != NULL) {
223	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {
225	/* One has fields, but the other one doesn't. */
226	return 0;	376	return 1;
227	} else if (!compare_ob_value_lists(ob1, ob2)) {	377
		378	if (!cfperl_can_merge (ob1, ob2))
228	return 0;	379	return 0;
229	}	380	}
230	}	381	}
231		382
232	/* Everything passes, must be OK. */	383	/* Everything passes, must be OK. */
233	return 1;	384	return 1;
234	}	385	}
235		386
		387	// find player who can see this object
		388	object *
		389	object::visible_to () const
		390	{
		391	if (client_visible () && !flag [FLAG_REMOVED])
		392	{
		393	// see if we are in a container of sorts
		394	if (env)
		395	{
		396	// the player inventory itself is always visible
		397	if (env->is_player ())
		398	return env;
		399
		400	// else a player could have our env open
		401	object *envest = env->outer_env_or_self ();
		402
		403	// the player itself is always on a map, so we will find him here
		404	// even if our inv is in a player.
		405	if (envest->is_on_map ())
		406	if (object *pl = envest->ms ().player ())
		407	if (pl->container_ () == env)
		408	return pl;
		409	}
		410	else
		411	{
		412	// maybe there is a player standing on the same mapspace
		413	// this will catch the case where "this" is a player
		414	if (object *pl = ms ().player ())
		415	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		416	|| pl->container_ () == this)
		417	return pl;
		418	}
		419	}
		420
		421	return 0;
		422	}
		423
		424	// adjust weight per container type ("of holding")
		425	static sint32
		426	weight_adjust_for (object *op, sint32 weight)
		427	{
		428	return op->type == CONTAINER
		429	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		430	: weight;
		431	}
		432
236	/*	433	/*
		434	* adjust_weight(object, weight) adds the specified weight to an object,
		435	* and also updates how much the environment(s) is/are carrying.
		436	*/
		437	static void
		438	adjust_weight (object *op, sint32 weight)
		439	{
		440	while (op)
		441	{
		442	// adjust by actual difference to account for rounding errors
		443	// i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
		444	weight = weight_adjust_for (op, op->carrying)
		445	- weight_adjust_for (op, op->carrying - weight);
		446
		447	if (!weight)
		448	return;
		449
		450	op->carrying += weight;
		451
		452	if (object *pl = op->visible_to ())
		453	if (pl != op) // player is handled lazily
		454	esrv_update_item (UPD_WEIGHT, pl, op);
		455
		456	op = op->env;
		457	}
		458	}
		459
		460	/*
237	* sum_weight() is a recursive function which calculates the weight	461	* this is a recursive function which calculates the weight
238	* an object is carrying. It goes through in figures out how much	462	* an object is carrying. It goes through op and figures out how much
239	* containers are carrying, and sums it up.	463	* containers are carrying, and sums it up.
240	*/	464	*/
241	signed long sum_weight(object *op) {	465	void
242	signed long sum;	466	object::update_weight ()
243	object *inv;	467	{
244	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	468	sint32 sum = 0;
		469
		470	for (object *op = inv; op; op = op->below)
		471	{
245	if (inv->inv)	472	if (op->inv)
246	sum_weight(inv);	473	op->update_weight ();
247	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	474
		475	sum += op->total_weight ();
248	}	476	}
249	if (op->type == CONTAINER && op->stats.Str)	477
250	sum = (sum * (100 - op->stats.Str))/100;	478	sum = weight_adjust_for (this, sum);
251	if(op->carrying != sum)	479
		480	if (sum != carrying)
		481	{
252	op->carrying = sum;	482	carrying = sum;
253	return sum;
254	}
255		483
		484	if (object *pl = visible_to ())
		485	if (pl != this) // player is handled lazily
		486	esrv_update_item (UPD_WEIGHT, pl, this);
		487	}
		488	}
		489
256	/**	490	/*
257	* Return the outermost environment object for a given object.	491	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
258	*/	492	*/
259		493	char *
260	object *object_get_env_recursive (object *op) {
261	while (op->env != NULL)
262	op = op->env;
263	return op;
264	}
265
266	/*
267	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
268	* a better check. We basically keeping traversing up until we can't
269	* or find a player.
270	*/
271
272	object *is_player_inv (object *op) {
273	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
274	if (op->env==op)
275	op->env = NULL;
276	return op;
277	}
278
279	/*
280	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
281	* Some error messages.
282	* The result of the dump is stored in the static global errmsg array.
283	*/
284
285	void dump_object2(object *op) {
286	char *cp;
287	/* object *tmp;*/
288
289	if(op->arch!=NULL) {
290	strcat(errmsg,"arch ");
291	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
292	strcat(errmsg,"\n");
293	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
294	strcat(errmsg,cp);
295	#if 0
296	/* Don't dump player diffs - they are too long, mostly meaningless, and
297	* will overflow the buffer.
298	* Changed so that we don't dump inventory either. This may
299	* also overflow the buffer.
300	*/
301	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
302	strcat(errmsg,cp);
303	for (tmp=op->inv; tmp; tmp=tmp->below)
304	dump_object2(tmp);
305	#endif
306	strcat(errmsg,"end\n");
307	} else {
308	strcat(errmsg,"Object ");
309	if (op->name==NULL) strcat(errmsg, "(null)");
310	else strcat(errmsg,op->name);
311	strcat(errmsg,"\n");
312	#if 0
313	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	}
320	}
321
322	/*
323	* Dumps an object. Returns output in the static global errmsg array.
324	*/
325
326	void dump_object(object *op) {	494	dump_object (object *op)
327	if(op==NULL) {
328	strcpy(errmsg,"[NULL pointer]");
329	return;
330	}
331	errmsg[0]='\0';
332	dump_object2(op);
333	}
334
335	/* GROS - Dumps an object. Return the result into a string */
336	/* Note that no checking is done for the validity of the target string, so */
337	/* you need to be sure that you allocated enough space for it. */
338	void dump_me(object *op, char *outstr)
339	{	495	{
340	char *cp;	496	if (!op)
		497	return strdup ("[NULLOBJ]");
341		498
342	if(op==NULL)	499	object_freezer freezer;
343	{	500	op->write (freezer);
344	strcpy(outstr,"[NULL pointer]");	501	return freezer.as_string ();
345	return;
346	}
347	outstr[0]='\0';
348
349	if(op->arch!=NULL)
350	{
351	strcat(outstr,"arch ");
352	strcat(outstr,op->arch->name?op->arch->name:"(null)");
353	strcat(outstr,"\n");
354	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
355	strcat(outstr,cp);
356	strcat(outstr,"end\n");
357	}
358	else
359	{
360	strcat(outstr,"Object ");
361	if (op->name==NULL)
362	strcat(outstr, "(null)");
363	else
364	strcat(outstr,op->name);
365	strcat(outstr,"\n");
366	strcat(outstr,"end\n");
367	}
368	}	502	}
369		503
370	/*	504	char *
371	* This is really verbose...Can be triggered by the P key while in DM mode.	505	object::as_string ()
372	* All objects are dumped to stderr (or alternate logfile, if in server-mode)	506	{
373	*/	507	return dump_object (this);
374
375	void dump_all_objects(void) {
376	object *op;
377	for(op=objects;op!=NULL;op=op->next) {
378	dump_object(op);
379	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
380	}
381	}
382
383	/*
384	* get_nearest_part(multi-object, object 2) returns the part of the
385	* multi-object 1 which is closest to the second object.
386	* If it's not a multi-object, it is returned.
387	*/
388
389	object *get_nearest_part(object *op, const object *pl) {
390	object *tmp,*closest;
391	int last_dist,i;
392	if(op->more==NULL)
393	return op;
394	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
395	if((i=distance(tmp,pl))<last_dist)
396	closest=tmp,last_dist=i;
397	return closest;
398	}	508	}
399		509
400	/*	510	/*
401	* Returns the object which has the count-variable equal to the argument.	511	* Returns the object which has the count-variable equal to the argument.
		512	* VERRRY slow.
402	*/	513	*/
403		514	object *
404	object *find_object(tag_t i) {	515	find_object (tag_t i)
405	object *op;	516	{
406	for(op=objects;op!=NULL;op=op->next)	517	for_all_objects (op)
407	if(op->count==i)	518	if (op->count == i)
408	break;
409	return op;	519	return op;
		520
		521	return 0;
		522	}
		523
		524	/*
		525	* Returns the object which has the uuid equal to the argument.
		526	* MOAR VERRRY slow.
		527	*/
		528
		529	object *
		530	find_object_uuid (UUID i)
		531	{
		532	for_all_objects (op)
		533	if (op->uuid == i)
		534	return op;
		535
		536	return 0;
410	}	537	}
411		538
412	/*	539	/*
413	* Returns the first object which has a name equal to the argument.	540	* Returns the first object which has a name equal to the argument.
414	* Used only by the patch command, but not all that useful.	541	* Used only by the patch command, but not all that useful.
415	* Enables features like "patch <name-of-other-player> food 999"	542	* Enables features like "patch <name-of-other-player> food 999"
416	*/	543	*/
417		544	object *
418	object *find_object_name(const char *str) {	545	find_object_name (const char *str)
419	const char *name=add_string(str);	546	{
420	object *op;	547	shstr_cmp str_ (str);
421	for(op=objects;op!=NULL;op=op->next)	548
422	if(op->name==name)	549	if (str_)
423	break;	550	for_all_objects (op)
424	free_string(name);	551	if (op->name == str_)
		552	return op;
		553
425	return op;	554	return 0;
426	}	555	}
427
428	void free_all_object_data(void) {
429	#ifdef MEMORY_DEBUG
430	object *op, *next;
431
432	for (op=free_objects; op!=NULL; ) {
433	next=op->next;
434	free(op);
435	nrofallocobjects--;
436	nroffreeobjects--;
437	op=next;
438	}
439	#endif
440	LOG(llevDebug,"%d allocated objects, %d free objects, STARMAX=%d\n",
441	nrofallocobjects, nroffreeobjects,STARTMAX);
442	}
443
444	/*
445	* Returns the object which this object marks as being the owner.
446	* A id-scheme is used to avoid pointing to objects which have been
447	* freed and are now reused. If this is detected, the owner is
448	* set to NULL, and NULL is returned.
449	* Changed 2004-02-12 - if the player is setting at the play again
450	* prompt, he is removed, and we don't want to treat him as an owner of
451	* anything, so check removed flag. I don't expect that this should break
452	* anything - once an object is removed, it is basically dead anyways.
453	*/
454
455	object *get_owner(object *op) {
456	if(op->owner==NULL)
457	return NULL;
458
459	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
460	op->owner->count==op->ownercount)
461	return op->owner;
462
463	op->owner=NULL;
464	op->ownercount=0;
465	return NULL;
466	}
467
468	void clear_owner(object *op)
469	{
470	if (!op) return;
471
472	if (op->owner && op->ownercount == op->owner->count)
473	op->owner->refcount--;
474
475	op->owner = NULL;
476	op->ownercount = 0;
477	}
478
479
480		556
481	/*	557	/*
482	* Sets the owner and sets the skill and exp pointers to owner's current	558	* Sets the owner and sets the skill and exp pointers to owner's current
483	* skill and experience objects.	559	* skill and experience objects.
		560	* ACTUALLY NO! investigate! TODO
484	*/	561	*/
485	void set_owner (object *op, object *owner)	562	void
		563	object::set_owner (object *owner)
486	{	564	{
487	if(owner==NULL||op==NULL)	565	// allow objects which own objects
		566	if (owner)
		567	while (owner->owner)
		568	owner = owner->owner;
		569
		570	if (flag [FLAG_FREED])
		571	{
		572	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
488	return;	573	return;
		574	}
489		575
490	/* next line added to allow objects which own objects */
491	/* Add a check for ownercounts in here, as I got into an endless loop
492	* with the fireball owning a poison cloud which then owned the
493	* fireball. I believe that was caused by one of the objects getting
494	* freed and then another object replacing it. Since the ownercounts
495	* didn't match, this check is valid and I believe that cause is valid.
496	*/
497	while (owner->owner && owner!=owner->owner &&
498	owner->ownercount==owner->owner->count) owner=owner->owner;
499
500	/* IF the owner still has an owner, we did not resolve to a final owner.
501	* so lets not add to that.
502	*/
503	if (owner->owner) return;
504
505	op->owner=owner;	576	this->owner = owner;
506
507	op->ownercount=owner->count;
508	owner->refcount++;
509
510	}	577	}
511		578
512	/* Set the owner to clone's current owner and set the skill and experience	579	int
513	* objects to clone's objects (typically those objects that where the owner's	580	object::slottype () const
514	* current skill and experience objects at the time when clone's owner was
515	* set - not the owner's current skill and experience objects).
516	*
517	* Use this function if player created an object (e.g. fire bullet, swarm
518	* spell), and this object creates further objects whose kills should be
519	* accounted for the player's original skill, even if player has changed
520	* skills meanwhile.
521	*/
522	void copy_owner (object *op, object *clone)
523	{	581	{
524	object *owner = get_owner (clone);	582	if (type == SKILL)
525	if (owner == NULL) {
526	/* players don't have owners - they own themselves. Update
527	* as appropriate.
528	*/
529	if (clone->type == PLAYER) owner=clone;
530	else return;
531	}	583	{
532	set_owner(op, owner);	584	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
533		585	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
534	}	586	}
535		587	else
536	/*	588	{
537	* Resets vital variables in an object	589	if (slot [body_combat].info) return slot_combat;
538	*/	590	if (slot [body_range ].info) return slot_ranged;
539		591	}
540	void reset_object(object *op) {	592
541		593	return slot_none;
542	op->name = NULL;
543	op->name_pl = NULL;
544	op->title = NULL;
545	op->race = NULL;
546	op->slaying = NULL;
547	op->skill = NULL;
548	op->msg = NULL;
549	op->materialname = NULL;
550	op->lore = NULL;
551	clear_object(op);
552	}	594	}
553		595
554	/* Zero the key_values on op, decrementing the shared-string	596	/* Zero the key_values on op, decrementing the shared-string
555	* refcounts and freeing the links.	597	* refcounts and freeing the links.
556	*/	598	*/
		599	static void
557	static void free_key_values(object * op) {	600	free_key_values (object *op)
558	key_value * i;	601	{
559	key_value * next = NULL;	602	for (key_value *i = op->key_values; i; )
560		603	{
561	if (op->key_values == NULL) return;	604	key_value *next = i->next;
		605	delete i;
		606
		607	i = next;
562		608	}
563	for (i = op->key_values; i != NULL; i = next) {	609
564	/* Store next *first*. */
565	next = i->next;
566
567	if (i->key) FREE_AND_CLEAR_STR(i->key);
568	if (i->value) FREE_AND_CLEAR_STR(i->value);
569	i->next = NULL;
570	free(i);
571	}
572
573	op->key_values = NULL;	610	op->key_values = 0;
574	}	611	}
575		612
576
577	/*	613	/*
578	* clear_object() frees everything allocated by an object, and also
579	* clears all variables and flags to default settings.
580	*/
581
582	void clear_object(object *op) {
583	op->clear ();
584
585	event *evt;
586	event *evt2;
587
588	/* redo this to be simpler/more efficient. Was also seeing
589	* crashes in the old code. Move this to the top - am
590	* seeing periodic crashes in this code, and would like to have
591	* as much info available as possible (eg, object name).
592	*/
593	for (evt = op->events; evt; evt=evt2) {
594	evt2 = evt->next;
595
596	if (evt->hook != NULL) FREE_AND_CLEAR_STR(evt->hook);
597	if (evt->plugin != NULL) FREE_AND_CLEAR_STR(evt->plugin);
598	if (evt->options != NULL) FREE_AND_CLEAR_STR(evt->options);
599
600	free(evt);
601	}
602	op->events = NULL;
603
604	free_key_values(op);
605
606	/* the memset will clear all these values for us, but we need
607	* to reduce the refcount on them.
608	*/
609	if (op->name!=NULL) FREE_AND_CLEAR_STR(op->name);
610	if (op->name_pl!=NULL) FREE_AND_CLEAR_STR(op->name_pl);
611	if (op->title != NULL) FREE_AND_CLEAR_STR(op->title);
612	if (op->race!=NULL) FREE_AND_CLEAR_STR(op->race);
613	if (op->slaying!=NULL) FREE_AND_CLEAR_STR(op->slaying);
614	if (op->skill!=NULL) FREE_AND_CLEAR_STR(op->skill);
615	if (op->msg!=NULL) FREE_AND_CLEAR_STR(op->msg);
616	if (op->lore!=NULL) FREE_AND_CLEAR_STR(op->lore);
617	if (op->materialname!= NULL) FREE_AND_CLEAR_STR(op->materialname);
618
619
620	memset((void*)op, 0, sizeof (object_special));
621	/* Below here, we clear things that are not done by the memset,
622	* or set default values that are not zero.
623	*/
624	/* This is more or less true */
625	SET_FLAG(op, FLAG_REMOVED);
626
627
628	op->contr = NULL;
629	op->below=NULL;
630	op->above=NULL;
631	op->inv=NULL;
632	op->events=NULL;
633	op->container=NULL;
634	op->env=NULL;
635	op->more=NULL;
636	op->head=NULL;
637	op->map=NULL;
638	op->refcount=0;
639	op->active_next = NULL;
640	op->active_prev = NULL;
641	/* What is not cleared is next, prev, and count */
642
643	op->expmul=1.0;
644	op->face = blank_face;
645	op->attacked_by_count = (tag_t) -1;
646	if (settings.casting_time)
647	op->casting_time = -1;
648
649	}
650
651	/*
652	* copy object first frees everything allocated by the second object,	614	* copy_to first frees everything allocated by the dst object,
653	* and then copies the contends of the first object into the second	615	* and then copies the contents of itself into the second
654	* object, allocating what needs to be allocated. Basically, any	616	* object, allocating what needs to be allocated. Basically, any
655	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	617	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
656	* if the first object is freed, the pointers in the new object	618	* if the first object is freed, the pointers in the new object
657	* will point at garbage.	619	* will point at garbage.
658	*/	620	*/
		621	void
		622	object::copy_to (object *dst)
		623	{
		624	dst->remove ();
		625	*(object_copy *)dst = *this;
		626	dst->flag [FLAG_REMOVED] = true;
659		627
660	void copy_object(object *op2, object *op) {
661	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);
662	event *evt, *evt2, *evt_new;
663
664	op->clear ();
665
666	/* Decrement the refcounts, but don't bother zeroing the fields;
667	they'll be overwritten by memcpy. */
668	if(op->name!=NULL) free_string(op->name);
669	if(op->name_pl!=NULL) free_string(op->name_pl);
670	if(op->title!=NULL) free_string(op->title);
671	if(op->race!=NULL) free_string(op->race);
672	if(op->slaying!=NULL) free_string(op->slaying);
673	if(op->skill!=NULL) free_string(op->skill);
674	if(op->msg!=NULL) free_string(op->msg);
675	if(op->lore!=NULL) free_string(op->lore);
676	if(op->materialname != NULL) free_string(op->materialname);
677	if(op->custom_name != NULL) free_string(op->custom_name);
678
679	/* Basically, same code as from clear_object() */
680	for (evt = op->events; evt; evt=evt2) {
681	evt2 = evt->next;
682
683	if (evt->hook != NULL) FREE_AND_CLEAR_STR(evt->hook);
684	if (evt->plugin != NULL) FREE_AND_CLEAR_STR(evt->plugin);
685	if (evt->options != NULL) FREE_AND_CLEAR_STR(evt->options);
686
687	free(evt);
688	}
689	op->events = NULL;
690
691	free_key_values(op);
692
693	*(object_special *)op = *(object_special *)op2;
694	op2->clone (op);
695
696	if(is_freed) SET_FLAG(op,FLAG_FREED);
697	if(is_removed) SET_FLAG(op,FLAG_REMOVED);
698	if(op->name!=NULL) add_refcount(op->name);
699	if(op->name_pl!=NULL) add_refcount(op->name_pl);
700	if(op->title!=NULL) add_refcount(op->title);
701	if(op->race!=NULL) add_refcount(op->race);
702	if(op->slaying!=NULL) add_refcount(op->slaying);
703	if(op->skill!=NULL) add_refcount(op->skill);
704	if(op->lore!=NULL) add_refcount(op->lore);
705	if(op->msg!=NULL) add_refcount(op->msg);
706	if(op->custom_name!=NULL) add_refcount(op->custom_name);
707	if (op->materialname != NULL) add_refcount(op->materialname);
708
709	if((op2->speed<0) && !editor)
710	op->speed_left=op2->speed_left-RANDOM()%200/100.0;
711
712	/* Copy over event information */
713	evt2 = NULL;
714	for (evt = op2->events; evt; evt=evt->next) {
715	evt_new = (event *) malloc(sizeof(event));
716	memcpy(evt_new, evt, sizeof(event));
717	if (evt_new->hook) add_refcount(evt_new->hook);
718	if (evt_new->plugin) add_refcount(evt_new->plugin);
719	if (evt_new->options) add_refcount(evt_new->options);
720	evt_new->next = NULL;
721
722	/* Try to be a little clever here, and store away the
723	* last event we copied, so that its simpler to update the
724	* pointer.
725	*/
726	if (evt2)
727	evt2->next = evt_new;
728	else
729	op->events = evt_new;
730
731	evt2 = evt_new;
732	}
733	/* Copy over key_values, if any. */	628	/* Copy over key_values, if any. */
734	if (op2->key_values != NULL) {	629	if (key_values)
		630	{
735	key_value * tail = NULL;	631	key_value *tail = 0;
736	key_value * i;
737
738	op->key_values = NULL;	632	dst->key_values = 0;
739		633
740	for (i = op2->key_values; i != NULL; i = i->next) {	634	for (key_value *i = key_values; i; i = i->next)
741	key_value * new_link = (key_value *) malloc(sizeof(key_value));	635	{
		636	key_value *new_link = new key_value;
742		637
743	new_link->next = NULL;	638	new_link->next = 0;
744	new_link->key = add_refcount(i->key);	639	new_link->key = i->key;
745	if (i->value)
746	new_link->value = add_refcount(i->value);	640	new_link->value = i->value;
747	else
748	new_link->value = NULL;
749		641
750	/* Try and be clever here, too. */	642	/* Try and be clever here, too. */
751	if (op->key_values == NULL) {	643	if (!dst->key_values)
		644	{
752	op->key_values = new_link;	645	dst->key_values = new_link;
753	tail = new_link;	646	tail = new_link;
		647	}
754	} else {	648	else
		649	{
755	tail->next = new_link;	650	tail->next = new_link;
756	tail = new_link;	651	tail = new_link;
757	}	652	}
758	}	653	}
759	}	654	}
760		655
761	update_ob_speed(op);	656	dst->activate ();
762	}	657	}
763		658
764	/*	659	void
765	* expand_objects() allocates more objects for the list of unused objects.	660	object::instantiate ()
766	* It is called from get_object() if the unused list is empty.	661	{
767	*/	662	if (!uuid.seq) // HACK
		663	uuid = UUID::gen ();
768		664
769	void expand_objects(void) {	665	// TODO: unclean state changes, should nt be done in copy_to AND instantiate
770	int i;	666	if (flag [FLAG_RANDOM_SPEED] && speed)
771	object *obj;	667	speed_left = - speed - rndm (); // TODO animation
772	obj = (object *) CALLOC(OBJ_EXPAND,sizeof(object));	668	else
		669	speed_left = -1.;
773		670
774	if(obj==NULL)	671	/* copy the body_info to the body_used - this is only really
775	fatal(OUT_OF_MEMORY);	672	* need for monsters, but doesn't hurt to do it for everything.
776	free_objects=obj;	673	* by doing so, when a monster is created, it has good starting
777	obj[0].prev=NULL;	674	* values for the body_used info, so when items are created
778	obj[0].next= &obj[1],	675	* for it, they can be properly equipped.
779	SET_FLAG(&(obj[0]), FLAG_REMOVED);
780	SET_FLAG(&(obj[0]), FLAG_FREED);
781
782	for(i=1;i<OBJ_EXPAND-1;i++) {
783	obj[i].next= &obj[i+1],
784	obj[i].prev= &obj[i-1],
785	SET_FLAG(&(obj[i]), FLAG_REMOVED);
786	SET_FLAG(&(obj[i]), FLAG_FREED);
787	}
788	obj[OBJ_EXPAND-1].prev= &obj[OBJ_EXPAND-2],
789	obj[OBJ_EXPAND-1].next=NULL,
790	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_REMOVED);
791	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_FREED);
792
793	nrofallocobjects += OBJ_EXPAND;
794	nroffreeobjects += OBJ_EXPAND;
795	}
796
797	/*
798	* get_object() grabs an object from the list of unused objects, makes
799	* sure it is initialised, and returns it.
800	* If there are no free objects, expand_objects() is called to get more.
801	*/
802
803	object *get_object(void) {
804	object *op;
805
806	if(free_objects==NULL) {
807	expand_objects();
808	}
809	op=free_objects;
810	#ifdef MEMORY_DEBUG
811	/* The idea is hopefully by doing a realloc, the memory
812	* debugging program will now use the current stack trace to
813	* report leaks.
814	*/	676	*/
815	op = realloc(op, sizeof(object));	677	for (int i = NUM_BODY_LOCATIONS; i--; )
816	SET_FLAG(op, FLAG_REMOVED);	678	slot[i].used = slot[i].info;
817	SET_FLAG(op, FLAG_FREED);
818	#endif
819		679
820	if(!QUERY_FLAG(op,FLAG_FREED)) {	680	attachable::instantiate ();
821	LOG(llevError,"Fatal: Getting busy object.\n");	681	}
822	}	682
823	free_objects=op->next;	683	object *
824	if(free_objects!=NULL)	684	object::clone ()
825	free_objects->prev=NULL;	685	{
826	op->count= ++ob_count;	686	object *neu = create ();
827	op->name=NULL;	687	copy_to (neu);
828	op->name_pl=NULL;	688
829	op->title=NULL;	689	// TODO: unclean state changes, should not be done in clone AND instantiate
830	op->race=NULL;	690	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
831	op->slaying=NULL;	691	neu->speed_left = - neu->speed - rndm (); // TODO animation
832	op->skill = NULL;	692
833	op->lore=NULL;	693	neu->map = map; // not copied by copy_to
834	op->msg=NULL;
835	op->materialname=NULL;
836	op->next=objects;
837	op->prev=NULL;
838	op->active_next = NULL;
839	op->active_prev = NULL;
840	if(objects!=NULL)
841	objects->prev=op;
842	objects=op;
843	clear_object(op);
844	SET_FLAG(op,FLAG_REMOVED);
845	nroffreeobjects--;
846	return op;	694	return neu;
847	}	695	}
848		696
849	/*	697	/*
850	* If an object with the IS_TURNABLE() flag needs to be turned due	698	* If an object with the IS_TURNABLE() flag needs to be turned due
851	* to the closest player being on the other side, this function can	699	* to the closest player being on the other side, this function can
852	* be called to update the face variable, _and_ how it looks on the map.	700	* be called to update the face variable, _and_ how it looks on the map.
853	*/	701	*/
854		702	void
855	void update_turn_face(object *op) {	703	update_turn_face (object *op)
		704	{
856	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	705	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
857	return;	706	return;
		707
858	SET_ANIMATION(op, op->direction);	708	SET_ANIMATION (op, op->direction);
859	update_object(op,UP_OBJ_FACE);	709	update_object (op, UP_OBJ_FACE);
860	}	710	}
861		711
862	/*	712	/*
863	* Updates the speed of an object. If the speed changes from 0 to another	713	* Updates the speed of an object. If the speed changes from 0 to another
864	* value, or vice versa, then add/remove the object from the active list.	714	* value, or vice versa, then add/remove the object from the active list.
865	* This function needs to be called whenever the speed of an object changes.	715	* This function needs to be called whenever the speed of an object changes.
866	*/	716	*/
		717	void
		718	object::set_speed (float speed)
		719	{
		720	this->speed = speed;
867		721
868	void update_ob_speed(object *op) {	722	if (has_active_speed ())
869	extern int arch_init;	723	activate ();
870
871	/* No reason putting the archetypes objects on the speed list,
872	* since they never really need to be updated.
873	*/
874
875	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
876	LOG(llevError,"Object %s is freed but has speed.\n", op->name);
877	#ifdef MANY_CORES
878	abort();
879	#else
880	op->speed = 0;
881	#endif
882	}
883	if (arch_init) {
884	return;
885	}
886	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
887	/* If already on active list, don't do anything */
888	if (op->active_next || op->active_prev || op==active_objects)
889	return;
890
891	/* process_events() expects us to insert the object at the beginning
892	* of the list. */
893	op->active_next = active_objects;
894	if (op->active_next!=NULL)
895	op->active_next->active_prev = op;
896	active_objects = op;
897	}
898	else {	724	else
899	/* If not on the active list, nothing needs to be done */	725	deactivate ();
900	if (!op->active_next && !op->active_prev && op!=active_objects)
901	return;
902
903	if (op->active_prev==NULL) {
904	active_objects = op->active_next;
905	if (op->active_next!=NULL)
906	op->active_next->active_prev = NULL;
907	}
908	else {
909	op->active_prev->active_next = op->active_next;
910	if (op->active_next)
911	op->active_next->active_prev = op->active_prev;
912	}
913	op->active_next = NULL;
914	op->active_prev = NULL;
915	}
916	}	726	}
917		727
918	/* This function removes object 'op' from the list of active
919	* objects.
920	* This should only be used for style maps or other such
921	* reference maps where you don't want an object that isn't
922	* in play chewing up cpu time getting processed.
923	* The reverse of this is to call update_ob_speed, which
924	* will do the right thing based on the speed of the object.
925	*/
926	void remove_from_active_list(object *op)
927	{
928	/* If not on the active list, nothing needs to be done */
929	if (!op->active_next && !op->active_prev && op!=active_objects)
930	return;
931
932	if (op->active_prev==NULL) {
933	active_objects = op->active_next;
934	if (op->active_next!=NULL)
935	op->active_next->active_prev = NULL;
936	}
937	else {
938	op->active_prev->active_next = op->active_next;
939	if (op->active_next)
940	op->active_next->active_prev = op->active_prev;
941	}
942	op->active_next = NULL;
943	op->active_prev = NULL;
944	}
945
946	/*	728	/*
947	* update_object() updates the array which represents the map.	729	* update_object() updates the the map.
948	* It takes into account invisible objects (and represent squares covered	730	* It takes into account invisible objects (and represent squares covered
949	* by invisible objects by whatever is below them (unless it's another	731	* by invisible objects by whatever is below them (unless it's another
950	* invisible object, etc...)	732	* invisible object, etc...)
951	* If the object being updated is beneath a player, the look-window	733	* If the object being updated is beneath a player, the look-window
952	* of that player is updated (this might be a suboptimal way of	734	* of that player is updated (this might be a suboptimal way of
953	* updating that window, though, since update_object() is called _often_)	735	* updating that window, though, since update_object() is called _often_)
954	*	736	*
955	* action is a hint of what the caller believes need to be done.	737	* action is a hint of what the caller believes need to be done.
956	* For example, if the only thing that has changed is the face (due to
957	* an animation), we don't need to call update_position until that actually
958	* comes into view of a player. OTOH, many other things, like addition/removal
959	* of walls or living creatures may need us to update the flags now.
960	* current action are:	738	* current action are:
961	* UP_OBJ_INSERT: op was inserted	739	* UP_OBJ_INSERT: op was inserted
962	* UP_OBJ_REMOVE: op was removed	740	* UP_OBJ_REMOVE: op was removed
963	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	741	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
964	* as that is easier than trying to look at what may have changed.	742	* as that is easier than trying to look at what may have changed.
965	* UP_OBJ_FACE: only the objects face has changed.	743	* UP_OBJ_FACE: only the objects face has changed.
966	*/	744	*/
967		745	void
968	void update_object(object *op, int action) {	746	update_object (object *op, int action)
969	int update_now=0, flags;	747	{
970	MoveType move_on, move_off, move_block, move_slow;	748	if (!op)
971		749	{
972	if (op == NULL) {
973	/* this should never happen */	750	/* this should never happen */
974	LOG(llevDebug,"update_object() called for NULL object.\n");	751	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
975	return;	752	return;
976	}
977		753	}
978	if(op->env!=NULL) {	754
		755	if (!op->is_on_map ())
		756	{
979	/* Animation is currently handled by client, so nothing	757	/* Animation is currently handled by client, so nothing
980	* to do in this case.	758	* to do in this case.
981	*/	759	*/
982	return;	760	return;
983	}
984
985	/* If the map is saving, don't do anything as everything is
986	* going to get freed anyways.
987	*/
988	if (!op->map || op->map->in_memory == MAP_SAVING) return;
989		761	}
		762
990	/* make sure the object is within map boundaries */	763	/* make sure the object is within map boundaries */
991	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	764	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
992	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	765	{
993	LOG(llevError,"update_object() called for object out of map!\n");	766	LOG (llevError, "update_object() called for object out of map!\n");
994	#ifdef MANY_CORES	767	#ifdef MANY_CORES
995	abort();	768	abort ();
996	#endif	769	#endif
997	return;	770	return;
998	}
999		771	}
1000	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
1001	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
1002	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
1003	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
1004	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
1005	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
1006		772
		773	mapspace &m = op->ms ();
		774
		775	if (!(m.flags_ & P_UPTODATE))
		776	/* nop */;
1007	if (action == UP_OBJ_INSERT) {	777	else if (action == UP_OBJ_INSERT)
		778	{
		779	#if 0
		780	// this is likely overkill, TODO: revisit (schmorp)
1008	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	781	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
1009	update_now=1;
1010
1011	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	782	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
1012	update_now=1;	783	|| (op->is_player () && !(m.flags_ & P_PLAYER))
1013		784	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		785	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
1014	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	786	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
1015	update_now=1;	787	|| (m.move_on | op->move_on ) != m.move_on
1016
1017	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
1018	update_now=1;
1019
1020	if ((move_on | op->move_on) != move_on) update_now=1;
1021	if ((move_off | op->move_off) != move_off) update_now=1;	788	|| (m.move_off | op->move_off ) != m.move_off
		789	|| (m.move_slow | op->move_slow) != m.move_slow
1022	/* This isn't perfect, but I don't expect a lot of objects to	790	/* This isn't perfect, but I don't expect a lot of objects to
1023	* to have move_allow right now.	791	* have move_allow right now.
1024	*/	792	*/
1025	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	793	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
1026	update_now=1;	794	m.invalidate ();
1027	if ((move_slow | op->move_slow) != move_slow) update_now=1;	795	#else
		796	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		797	m.invalidate ();
		798	#endif
1028	}	799	}
1029	/* if the object is being removed, we can't make intelligent	800	/* if the object is being removed, we can't make intelligent
1030	* decisions, because remove_ob can't really pass the object	801	* decisions, because remove_ob can't really pass the object
1031	* that is being removed.	802	* that is being removed.
1032	*/	803	*/
1033	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	804	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
1034	update_now=1;	805	m.invalidate ();
1035	} else if (action == UP_OBJ_FACE) {	806	else if (action == UP_OBJ_FACE)
1036	/* Nothing to do for that case */	807	/* Nothing to do for that case */ ;
1037	}
1038	else {	808	else
1039	LOG(llevError,"update_object called with invalid action: %d\n", action);	809	LOG (llevError, "update_object called with invalid action: %d\n", action);
1040	}
1041		810
1042	if (update_now) {
1043	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
1044	update_position(op->map, op->x, op->y);
1045	}
1046
1047	if(op->more!=NULL)	811	if (op->more)
1048	update_object(op->more, action);	812	update_object (op->more, action);
1049	}	813	}
1050		814
		815	object::object ()
		816	{
		817	SET_FLAG (this, FLAG_REMOVED);
1051		818
1052	/*	819	//expmul = 1.0; declared const for the time being
1053	* free_object() frees everything allocated by an object, removes	820	face = blank_face;
1054	* it from the list of used objects, and puts it on the list of	821	material = MATERIAL_NULL;
1055	* free objects. The IS_FREED() flag is set in the object.
1056	* The object must have been removed by remove_ob() first for
1057	* this function to succeed.
1058	*
1059	* If free_inventory is set, free inventory as well. Else drop items in
1060	* inventory to the ground.
1061	*/
1062
1063	void free_object(object *ob) {
1064	free_object2(ob, 0);
1065	}	822	}
1066	void free_object2(object *ob, int free_inventory) {
1067	object *tmp,*op;
1068		823
1069	ob->clear ();	824	object::~object ()
		825	{
		826	unlink ();
1070		827
1071	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	828	free_key_values (this);
1072	LOG(llevDebug,"Free object called with non removed object\n");	829	}
1073	dump_object(ob);	830
1074	#ifdef MANY_CORES	831	static int object_count;
1075	abort();	832
1076	#endif	833	void object::link ()
1077	}	834	{
1078	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	835	assert (!index);//D
1079	LOG(llevMonster,"Warning: tried to free friendly object.\n");	836	uuid = UUID::gen ();
1080	remove_friendly_object(ob);	837	count = ++object_count;
1081	}	838
1082	if(QUERY_FLAG(ob,FLAG_FREED)) {	839	refcnt_inc ();
1083	dump_object(ob);	840	objects.insert (this);
1084	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	841	}
		842
		843	void object::unlink ()
		844	{
		845	if (!index)
1085	return;	846	return;
		847
		848	objects.erase (this);
		849	refcnt_dec ();
		850	}
		851
		852	void
		853	object::activate ()
		854	{
		855	/* If already on active list, don't do anything */
		856	if (active)
		857	return;
		858
		859	if (has_active_speed ())
1086	}	860	{
1087	if(ob->more!=NULL) {	861	if (flag [FLAG_FREED])
1088	free_object2(ob->more, free_inventory);	862	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
1089	ob->more=NULL;	863
		864	actives.insert (this);
		865	}
		866	}
		867
		868	void
		869	object::activate_recursive ()
		870	{
		871	activate ();
		872
		873	for (object *op = inv; op; op = op->below)
		874	op->activate_recursive ();
		875	}
		876
		877	/* This function removes object 'op' from the list of active
		878	* objects.
		879	* This should only be used for style maps or other such
		880	* reference maps where you don't want an object that isn't
		881	* in play chewing up cpu time getting processed.
		882	* The reverse of this is to call update_ob_speed, which
		883	* will do the right thing based on the speed of the object.
		884	*/
		885	void
		886	object::deactivate ()
		887	{
		888	/* If not on the active list, nothing needs to be done */
		889	if (!active)
		890	return;
		891
		892	actives.erase (this);
		893	}
		894
		895	void
		896	object::deactivate_recursive ()
		897	{
		898	for (object *op = inv; op; op = op->below)
		899	op->deactivate_recursive ();
		900
		901	deactivate ();
		902	}
		903
		904	void
		905	object::set_flag_inv (int flag, int value)
		906	{
		907	for (object *op = inv; op; op = op->below)
1090	}	908	{
1091	if (ob->inv) {	909	op->flag [flag] = value;
		910	op->set_flag_inv (flag, value);
		911	}
		912	}
		913
		914	/*
		915	* Remove and free all objects in the inventory of the given object.
		916	* object.c ?
		917	*/
		918	void
		919	object::destroy_inv (bool drop_to_ground)
		920	{
		921	// need to check first, because the checks below might segfault
		922	// as we might be on an invalid mapspace and crossfire code
		923	// is too buggy to ensure that the inventory is empty.
		924	// corollary: if you create arrows etc. with stuff in its inventory,
		925	// cf will crash below with off-map x and y
		926	if (!inv)
		927	return;
		928
1092	/* Only if the space blocks everything do we not process -	929	/* Only if the space blocks everything do we not process -
1093	* if some form of movemnt is allowed, let objects	930	* if some form of movement is allowed, let objects
1094	* drop on that space.	931	* drop on that space.
1095	*/	932	*/
1096	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	933	if (!drop_to_ground
1097	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	934	|| !map
		935	|| map->in_memory != MAP_ACTIVE
		936	|| map->no_drop
		937	|| ms ().move_block == MOVE_ALL)
		938	{
		939	while (inv)
		940	inv->destroy ();
		941	}
		942	else
		943	{ /* Put objects in inventory onto this space */
		944	while (inv)
1098	{	945	{
1099	op=ob->inv;	946	object *op = inv;
1100	while(op!=NULL) {	947
1101	tmp=op->below;	948	if (op->flag [FLAG_STARTEQUIP]
1102	remove_ob(op);	949	|| op->flag [FLAG_NO_DROP]
1103	free_object2(op, free_inventory);	950	|| op->type == RUNE
1104	op=tmp;	951	|| op->type == TRAP
1105	}	952	|| op->flag [FLAG_IS_A_TEMPLATE]
		953	|| op->flag [FLAG_DESTROY_ON_DEATH])
		954	op->destroy ();
		955	else
		956	map->insert (op, x, y);
1106	}	957	}
1107	else { /* Put objects in inventory onto this space */
1108	op=ob->inv;
1109	while(op!=NULL) {
1110	tmp=op->below;
1111	remove_ob(op);
1112	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||
1113	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))
1114	free_object(op);
1115	else {
1116	op->x=ob->x;
1117	op->y=ob->y;
1118	insert_ob_in_map(op,ob->map,NULL,0); /* Insert in same map as the envir */
1119	}
1120	op=tmp;
1121	}
1122	}
1123	}
1124	/* Remove object from the active list */
1125	ob->speed = 0;
1126	update_ob_speed(ob);
1127
1128	SET_FLAG(ob, FLAG_FREED);
1129	ob->count = 0;
1130
1131	/* Remove this object from the list of used objects */
1132	if(ob->prev==NULL) {
1133	objects=ob->next;
1134	if(objects!=NULL)
1135	objects->prev=NULL;
1136	}
1137	else {
1138	ob->prev->next=ob->next;
1139	if(ob->next!=NULL)
1140	ob->next->prev=ob->prev;
1141	}
1142
1143	if(ob->name!=NULL) FREE_AND_CLEAR_STR(ob->name);
1144	if(ob->name_pl!=NULL) FREE_AND_CLEAR_STR(ob->name_pl);
1145	if(ob->title!=NULL) FREE_AND_CLEAR_STR(ob->title);
1146	if(ob->race!=NULL) FREE_AND_CLEAR_STR(ob->race);
1147	if(ob->slaying!=NULL) FREE_AND_CLEAR_STR(ob->slaying);
1148	if(ob->skill!=NULL) FREE_AND_CLEAR_STR(ob->skill);
1149	if(ob->lore!=NULL) FREE_AND_CLEAR_STR(ob->lore);
1150	if(ob->msg!=NULL) FREE_AND_CLEAR_STR(ob->msg);
1151	if(ob->materialname!=NULL) FREE_AND_CLEAR_STR(ob->materialname);
1152
1153		958	}
1154	/* Why aren't events freed? */
1155	free_key_values(ob);
1156
1157	#if 0 /* MEMORY_DEBUG*/
1158	/* This is a nice idea. Unfortunately, a lot of the code in crossfire
1159	* presumes the freed_object will stick around for at least a little
1160	* bit
1161	*/
1162	/* this is necessary so that memory debugging programs will
1163	* be able to accurately report source of malloc. If we recycle
1164	* objects, then some other area may be doing the get_object
1165	* and not freeing it, but the original one that malloc'd the
1166	* object will get the blame.
1167	*/
1168	free(ob);
1169	#else
1170
1171	/* Now link it with the free_objects list: */
1172	ob->prev=NULL;
1173	ob->next=free_objects;
1174	if(free_objects!=NULL)
1175	free_objects->prev=ob;
1176	free_objects=ob;
1177	nroffreeobjects++;
1178	#endif
1179	}	959	}
1180		960
1181	/*	961	object *object::create ()
1182	* count_free() returns the number of objects on the list of free objects.	962	{
1183	*/
1184
1185	int count_free(void) {
1186	int i=0;
1187	object *tmp=free_objects;	963	object *op = new object;
1188	while(tmp!=NULL)	964	op->link ();
1189	tmp=tmp->next, i++;
1190	return i;	965	return op;
1191	}	966	}
1192		967
1193	/*	968	static struct freed_map : maptile
1194	* count_used() returns the number of objects on the list of used objects.	969	{
1195	*/	970	freed_map ()
		971	{
		972	path = "<freed objects map>";
		973	name = "/internal/freed_objects_map";
		974	width = 3;
		975	height = 3;
		976	no_drop = 1;
		977	no_reset = 1;
1196		978
1197	int count_used(void) {	979	alloc ();
1198	int i=0;	980	in_memory = MAP_ACTIVE;
1199	object *tmp=objects;
1200	while(tmp!=NULL)
1201	tmp=tmp->next, i++;
1202	return i;
1203	}
1204
1205	/*
1206	* count_active() returns the number of objects on the list of active objects.
1207	*/
1208
1209	int count_active(void) {
1210	int i=0;
1211	object *tmp=active_objects;
1212	while(tmp!=NULL)
1213	tmp=tmp->active_next, i++;
1214	return i;
1215	}
1216
1217	/*
1218	* sub_weight() recursively (outwards) subtracts a number from the
1219	* weight of an object (and what is carried by it's environment(s)).
1220	*/
1221
1222	void sub_weight (object *op, signed long weight) {
1223	while (op != NULL) {
1224	if (op->type == CONTAINER) {
1225	weight=(signed long)(weight*(100-op->stats.Str)/100);
1226	}
1227	op->carrying-=weight;
1228	op = op->env;
1229	}	981	}
1230	}
1231		982
1232	/* remove_ob(op):	983	~freed_map ()
		984	{
		985	destroy ();
		986	}
		987	} freed_map; // freed objects are moved here to avoid crashes
		988
		989	void
		990	object::do_destroy ()
		991	{
		992	if (flag [FLAG_IS_LINKED])
		993	remove_link ();
		994
		995	if (flag [FLAG_FRIENDLY])
		996	remove_friendly_object (this);
		997
		998	remove ();
		999
		1000	attachable::do_destroy ();
		1001
		1002	deactivate ();
		1003	unlink ();
		1004
		1005	flag [FLAG_FREED] = 1;
		1006
		1007	// hack to ensure that freed objects still have a valid map
		1008	map = &freed_map;
		1009	x = 1;
		1010	y = 1;
		1011
		1012	if (more)
		1013	{
		1014	more->destroy ();
		1015	more = 0;
		1016	}
		1017
		1018	head = 0;
		1019
		1020	// clear those pointers that likely might cause circular references
		1021	owner = 0;
		1022	enemy = 0;
		1023	attacked_by = 0;
		1024	current_weapon = 0;
		1025	}
		1026
		1027	void
		1028	object::destroy ()
		1029	{
		1030	if (destroyed ())
		1031	return;
		1032
		1033	if (!is_head () && !head->destroyed ())
		1034	{
		1035	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1036	head->destroy ();
		1037	return;
		1038	}
		1039
		1040	destroy_inv (false);
		1041
		1042	if (is_head ())
		1043	if (sound_destroy)
		1044	play_sound (sound_destroy);
		1045	else if (flag [FLAG_MONSTER])
		1046	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1047
		1048	attachable::destroy ();
		1049	}
		1050
		1051	/* op->remove ():
1233	* This function removes the object op from the linked list of objects	1052	* This function removes the object op from the linked list of objects
1234	* which it is currently tied to. When this function is done, the	1053	* which it is currently tied to. When this function is done, the
1235	* object will have no environment. If the object previously had an	1054	* object will have no environment. If the object previously had an
1236	* environment, the x and y coordinates will be updated to	1055	* environment, the x and y coordinates will be updated to
1237	* the previous environment.	1056	* the previous environment.
1238	* Beware: This function is called from the editor as well!
1239	*/	1057	*/
		1058	void
		1059	object::do_remove ()
		1060	{
		1061	if (flag [FLAG_REMOVED])
		1062	return;
1240		1063
1241	void remove_ob(object *op) {	1064	INVOKE_OBJECT (REMOVE, this);
1242	object *tmp,*last=NULL;
1243	object *otmp;
1244	tag_t tag;
1245	int check_walk_off;
1246	mapstruct *m;
1247	sint16 x,y;
1248
1249		1065
1250	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1066	flag [FLAG_REMOVED] = true;
1251	dump_object(op);
1252	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1253		1067
1254	/* Changed it to always dump core in this case. As has been learned	1068	if (more)
1255	* in the past, trying to recover from errors almost always	1069	more->remove ();
1256	* make things worse, and this is a real error here - something
1257	* that should not happen.
1258	* Yes, if this was a mission critical app, trying to do something
1259	* to recover may make sense, but that is because failure of the app
1260	* may have other disastrous problems. Cf runs out of a script
1261	* so is easily enough restarted without any real problems.
1262	* MSW 2001-07-01
1263	*/
1264	abort();
1265	}
1266	if(op->more!=NULL)
1267	remove_ob(op->more);
1268		1070
1269	SET_FLAG(op, FLAG_REMOVED);
1270
1271	/*	1071	/*
1272	* In this case, the object to be removed is in someones	1072	* In this case, the object to be removed is in someones
1273	* inventory.	1073	* inventory.
1274	*/	1074	*/
1275	if(op->env!=NULL) {	1075	if (env)
1276	if(op->nrof)	1076	{
1277	sub_weight(op->env, op->weight*op->nrof);	1077	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1278	else	1078	if (object *pl = visible_to ())
1279	sub_weight(op->env, op->weight+op->carrying);	1079	esrv_del_item (pl->contr, count);
		1080	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1280		1081
1281	/* NO_FIX_PLAYER is set when a great many changes are being	1082	adjust_weight (env, -total_weight ());
1282	* made to players inventory. If set, avoiding the call
1283	* to save cpu time.
1284	*/
1285	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&
1286	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1287	fix_player(otmp);
1288		1083
1289	if(op->above!=NULL)	1084	object *pl = in_player ();
1290	op->above->below=op->below;
1291	else
1292	op->env->inv=op->below;
1293		1085
1294	if(op->below!=NULL)
1295	op->below->above=op->above;
1296
1297	/* we set up values so that it could be inserted into	1086	/* we set up values so that it could be inserted into
1298	* the map, but we don't actually do that - it is up	1087	* the map, but we don't actually do that - it is up
1299	* to the caller to decide what we want to do.	1088	* to the caller to decide what we want to do.
1300	*/	1089	*/
1301	op->x=op->env->x,op->y=op->env->y;	1090	map = env->map;
1302	op->ox=op->x,op->oy=op->y;	1091	x = env->x;
1303	op->map=op->env->map;	1092	y = env->y;
1304	op->above=NULL,op->below=NULL;	1093
1305	op->env=NULL;	1094	// make sure cmov optimisation is applicable
		1095	*(above ? &above->below : &env->inv) = below;
		1096	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1097
		1098	above = 0;
		1099	below = 0;
		1100	env = 0;
		1101
		1102	if (pl && pl->is_player ())
		1103	{
		1104	if (expect_false (pl->contr->combat_ob == this))
		1105	{
		1106	pl->apply (pl->contr->combat_ob, AP_UNAPPLY);
		1107	pl->contr->combat_ob = 0;
		1108	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
		1109	}
		1110
		1111	if (expect_false (pl->contr->ranged_ob == this))
		1112	{
		1113	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY);
		1114	pl->contr->ranged_ob = 0;
		1115	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1116	}
		1117
		1118	pl->contr->queue_stats_update ();
		1119
		1120	if (expect_false (glow_radius) && pl->is_on_map ())
		1121	update_all_los (pl->map, pl->x, pl->y);
		1122	}
		1123	}
		1124	else if (map)
		1125	{
		1126	map->dirty = true;
		1127	mapspace &ms = this->ms ();
		1128
		1129	if (object *pl = ms.player ())
		1130	{
		1131	if (is_player ())
		1132	{
		1133	if (!flag [FLAG_WIZPASS])
		1134	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1135
		1136	// leaving a spot always closes any open container on the ground
		1137	if (container && !container->env)
		1138	// this causes spurious floorbox updates, but it ensures
		1139	// that the CLOSE event is being sent.
		1140	close_container ();
		1141
		1142	--map->players;
		1143	map->touch ();
		1144	}
		1145	else if (pl->container_ () == this)
		1146	{
		1147	// removing a container should close it
		1148	close_container ();
		1149	}
		1150
		1151	esrv_del_item (pl->contr, count);
		1152	}
		1153
		1154	/* link the object above us */
		1155	// re-link, make sure compiler can easily use cmove
		1156	*(above ? &above->below : &ms.top) = below;
		1157	*(below ? &below->above : &ms.bot) = above;
		1158
		1159	above = 0;
		1160	below = 0;
		1161
		1162	ms.invalidate ();
		1163
		1164	if (map->in_memory == MAP_SAVING)
1306	return;	1165	return;
1307	}
1308		1166
1309	/* If we get here, we are removing it from a map */	1167	int check_walk_off = !flag [FLAG_NO_APPLY];
1310	if (op->map == NULL) return;
1311		1168
1312	x = op->x;	1169	if (object *pl = ms.player ())
1313	y = op->y;
1314	m = get_map_from_coord(op->map, &x, &y);
1315
1316	if (!m) {
1317	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1318	op->map->path, op->x, op->y);
1319	/* in old days, we used to set x and y to 0 and continue.
1320	* it seems if we get into this case, something is probablye
1321	* screwed up and should be fixed.
1322	*/
1323	abort();
1324	}
1325	if (op->map != m) {
1326	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1327	op->map->path, m->path, op->x, op->y, x, y);
1328	}
1329
1330	/* Re did the following section of code - it looks like it had
1331	* lots of logic for things we no longer care about
1332	*/
1333
1334	/* link the object above us */
1335	if (op->above)
1336	op->above->below=op->below;
1337	else
1338	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1339
1340	/* Relink the object below us, if there is one */
1341	if(op->below) {
1342	op->below->above=op->above;
1343	} else {
1344	/* Nothing below, which means we need to relink map object for this space
1345	* use translated coordinates in case some oddness with map tiling is
1346	* evident
1347	*/
1348	if(GET_MAP_OB(m,x,y)!=op) {
1349	dump_object(op);
1350	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);
1351	dump_object(GET_MAP_OB(m,x,y));
1352	LOG(llevError,"%s\n",errmsg);
1353	}	1170	{
1354	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1171	if (pl->container_ () == this)
1355	}
1356	op->above=NULL;
1357	op->below=NULL;
1358
1359	if (op->map->in_memory == MAP_SAVING)
1360	return;
1361
1362	tag = op->count;
1363	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1364	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1365	/* No point updating the players look faces if he is the object
1366	* being removed.
1367	*/
1368
1369	if(tmp->type==PLAYER && tmp!=op) {
1370	/* If a container that the player is currently using somehow gets	1172	/* If a container that the player is currently using somehow gets
1371	* removed (most likely destroyed), update the player view	1173	* removed (most likely destroyed), update the player view
1372	* appropriately.	1174	* appropriately.
1373	*/	1175	*/
1374	if (tmp->container==op) {	1176	pl->close_container ();
1375	CLEAR_FLAG(op, FLAG_APPLIED);	1177
1376	tmp->container=NULL;	1178	//TODO: the floorbox prev/next might need updating
1377	}	1179	//esrv_del_item (pl->contr, count);
1378	tmp->contr->socket.update_look=1;	1180	//TODO: update floorbox to preserve ordering
		1181	if (pl->contr->ns)
		1182	pl->contr->ns->floorbox_update ();
1379	}	1183	}
		1184
		1185	if (check_walk_off)
		1186	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1187	{
		1188	above = tmp->above;
		1189
		1190	/* No point updating the players look faces if he is the object
		1191	* being removed.
		1192	*/
		1193
1380	/* See if player moving off should effect something */	1194	/* See if object moving off should effect something */
1381	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1195	if ((move_type & tmp->move_off)
1382	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1196	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1383
1384	move_apply(tmp, op, NULL);	1197	move_apply (tmp, this, 0);
1385	if (was_destroyed (op, tag)) {
1386	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1387	"leaving object\n", tmp->name, tmp->arch->name);
1388	}	1198	}
1389	}
1390		1199
1391	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1200	if (affects_los ())
1392
1393	if(tmp->above == tmp)
1394	tmp->above = NULL;
1395	last=tmp;
1396	}
1397	/* last == NULL of there are no objects on this space */
1398	if (last==NULL) {
1399	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1400	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1401	* those out anyways, and if there are any flags set right now, they won't
1402	* be correct anyways.
1403	*/
1404	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1405	update_position(op->map, op->x, op->y);
1406	}
1407	else
1408	update_object(last, UP_OBJ_REMOVE);
1409
1410	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1411	update_all_los(op->map, op->x, op->y);	1201	update_all_los (map, x, y);
1412		1202	}
1413	}	1203	}
1414		1204
1415	/*	1205	/*
1416	* merge_ob(op,top):	1206	* merge_ob(op,top):
1417	*	1207	*
1418	* This function goes through all objects below and including top, and	1208	* This function goes through all objects below and including top, and
1419	* merges op to the first matching object.	1209	* merges op to the first matching object.
1420	* If top is NULL, it is calculated.	1210	* If top is NULL, it is calculated.
1421	* Returns pointer to object if it succeded in the merge, otherwise NULL	1211	* Returns pointer to object if it succeded in the merge, otherwise NULL
1422	*/	1212	*/
1423		1213	object *
1424	object *merge_ob(object *op, object *top) {	1214	merge_ob (object *op, object *top)
		1215	{
1425	if(!op->nrof)	1216	if (!op->nrof)
1426	return 0;	1217	return 0;
1427	if(top==NULL)	1218
		1219	if (!top)
1428	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1220	for (top = op; top && top->above; top = top->above)
		1221	;
		1222
1429	for(;top!=NULL;top=top->below) {	1223	for (; top; top = top->below)
1430	if(top==op)	1224	if (object::can_merge (op, top))
1431	continue;
1432	if (CAN_MERGE(op,top))
1433	{	1225	{
1434	top->nrof+=op->nrof;	1226	top->nrof += op->nrof;
1435	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1227
1436	op->weight = 0; /* Don't want any adjustements now */	1228	if (object *pl = top->visible_to ())
1437	remove_ob(op);	1229	esrv_update_item (UPD_NROF, pl, top);
1438	free_object(op);	1230
		1231	op->weight = 0; // cancel the addition above
		1232	op->carrying = 0; // must be 0 already
		1233
		1234	op->destroy ();
		1235
1439	return top;	1236	return top;
1440	}	1237	}
1441	}	1238
1442	return NULL;	1239	return 0;
1443	}	1240	}
1444		1241
		1242	void
		1243	object::expand_tail ()
		1244	{
		1245	if (more)
		1246	return;
		1247
		1248	object *prev = this;
		1249
		1250	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1251	{
		1252	object *op = at->instance ();
		1253
		1254	op->name = name;
		1255	op->name_pl = name_pl;
		1256	op->title = title;
		1257
		1258	op->head = this;
		1259	prev->more = op;
		1260
		1261	prev = op;
		1262	}
		1263	}
		1264
1445	/*	1265	/*
1446	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1266	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1447	* job preparing multi-part monsters	1267	* job preparing multi-part monsters.
1448	*/	1268	*/
		1269	object *
1449	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1270	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1450	object* tmp;	1271	{
1451	if (op->head)	1272	op->remove ();
1452	op=op->head;	1273
1453	for (tmp=op;tmp;tmp=tmp->more){	1274	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1275	{
1454	tmp->x=x+tmp->arch->clone.x;	1276	tmp->x = x + tmp->arch->x;
1455	tmp->y=y+tmp->arch->clone.y;	1277	tmp->y = y + tmp->arch->y;
1456	}	1278	}
		1279
1457	return insert_ob_in_map (op, m, originator, flag);	1280	return insert_ob_in_map (op, m, originator, flag);
1458	}	1281	}
1459		1282
1460	/*	1283	/*
1461	* insert_ob_in_map (op, map, originator, flag):	1284	* insert_ob_in_map (op, map, originator, flag):
1462	* This function inserts the object in the two-way linked list	1285	* This function inserts the object in the two-way linked list
…		…
1472	* Passing 0 for flag gives proper default values, so flag really only needs	1295	* Passing 0 for flag gives proper default values, so flag really only needs
1473	* to be set if special handling is needed.	1296	* to be set if special handling is needed.
1474	*	1297	*
1475	* Return value:	1298	* Return value:
1476	* new object if 'op' was merged with other object	1299	* new object if 'op' was merged with other object
1477	* NULL if 'op' was destroyed	1300	* NULL if there was an error (destroyed, blocked etc.)
1478	* just 'op' otherwise	1301	* just 'op' otherwise
1479	*/	1302	*/
1480		1303	object *
1481	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1304	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1482	{	1305	{
1483	object *tmp, *top, *floor=NULL;	1306	op->remove ();
1484	sint16 x,y;
1485		1307
1486	if (QUERY_FLAG (op, FLAG_FREED)) {	1308	if (m == &freed_map)//D TODO: remove soon
1487	LOG (llevError, "Trying to insert freed object!\n");	1309	{//D
1488	return NULL;	1310	LOG (llevError | logBacktrace, "tries to insret object on freed objects map: %s", op->debug_desc ());//D
		1311	}//D
		1312
		1313	/* Ideally, the caller figures this out. However, it complicates a lot
		1314	* of areas of callers (eg, anything that uses find_free_spot would now
		1315	* need extra work
		1316	*/
		1317	maptile *newmap = m;
		1318	if (!xy_normalise (newmap, op->x, op->y))
1489	}	1319	{
1490	if(m==NULL) {	1320	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
1491	dump_object(op);
1492	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1493	return op;	1321	return 0;
1494	}	1322	}
1495	if(out_of_map(m,op->x,op->y)) {	1323
1496	dump_object(op);	1324	if (object *more = op->more)
1497	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1325	if (!insert_ob_in_map (more, m, originator, flag))
1498	#ifdef MANY_CORES
1499	/* Better to catch this here, as otherwise the next use of this object
1500	* is likely to cause a crash. Better to find out where it is getting
1501	* improperly inserted.
1502	*/
1503	abort();
1504	#endif
1505	return op;	1326	return 0;
1506	}
1507	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1508	dump_object(op);
1509	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1510	return op;
1511	}
1512	if(op->more!=NULL) {
1513	/* The part may be on a different map. */
1514		1327
1515	object *more = op->more;	1328	op->flag [FLAG_REMOVED] = false;
		1329	op->env = 0;
		1330	op->map = newmap;
1516		1331
1517	/* We really need the caller to normalize coordinates - if	1332	mapspace &ms = op->ms ();
1518	* we set the map, that doesn't work if the location is within	1333
1519	* a map and this is straddling an edge. So only if coordinate	1334	/* this has to be done after we translate the coordinates.
1520	* is clear wrong do we normalize it.	1335	*/
		1336	if (op->nrof && !(flag & INS_NO_MERGE))
		1337	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1338	if (object::can_merge (op, tmp))
1521	*/	1339	{
1522	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1340	// TODO: we actually want to update tmp, not op,
1523	/* Debugging information so you can see the last coordinates this object had */	1341	// but some caller surely breaks when we return tmp
1524	more->ox = more->x;	1342	// from here :/
1525	more->oy = more->y;	1343	op->nrof += tmp->nrof;
1526	more->map = get_map_from_coord(m, &more->x, &more->y);	1344	tmp->destroy ();
1527	} else if (!more->map) {
1528	/* For backwards compatibility - when not dealing with tiled maps,
1529	* more->map should always point to the parent.
1530	*/
1531	more->map = m;
1532	}	1345	}
1533		1346
1534	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1347	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1535	if ( ! op->head)	1348	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1536	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1349
1537	return NULL;	1350	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1351	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1352
		1353	if (flag & INS_BELOW_ORIGINATOR)
		1354	{
		1355	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1356	{
		1357	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1358	abort ();
1538	}	1359	}
		1360
		1361	if (!originator->is_on_map ())
		1362	{
		1363	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1364	op->debug_desc (), originator->debug_desc ());
		1365	abort ();
		1366	}
		1367
		1368	op->above = originator;
		1369	op->below = originator->below;
		1370	originator->below = op;
		1371
		1372	*(op->below ? &op->below->above : &ms.bot) = op;
		1373	}
		1374	else
1539	}	1375	{
1540	CLEAR_FLAG(op,FLAG_REMOVED);	1376	object *floor = 0;
		1377	object *top = ms.top;
1541		1378
1542	/* Debugging information so you can see the last coordinates this object had */	1379	/* If there are other objects, then */
1543	op->ox=op->x;	1380	if (top)
1544	op->oy=op->y;	1381	{
		1382	/*
		1383	* If there are multiple objects on this space, we do some trickier handling.
		1384	* We've already dealt with merging if appropriate.
		1385	* Generally, we want to put the new object on top. But if
		1386	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1387	* floor, we want to insert above that and no further.
		1388	* Also, if there are spell objects on this space, we stop processing
		1389	* once we get to them. This reduces the need to traverse over all of
		1390	* them when adding another one - this saves quite a bit of cpu time
		1391	* when lots of spells are cast in one area. Currently, it is presumed
		1392	* that flying non pickable objects are spell objects.
		1393	*/
		1394	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1395	{
		1396	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) || QUERY_FLAG (tmp, FLAG_OVERLAY_FLOOR))
		1397	floor = tmp;
1545		1398
1546	/* Ideally, the caller figures this out. However, it complicates a lot	1399	if (QUERY_FLAG (tmp, FLAG_NO_PICK) && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1547	* of areas of callers (eg, anything that uses find_free_spot would now	1400	{
1548	* need extra work	1401	/* We insert above top, so we want this object below this */
1549	*/	1402	top = tmp->below;
1550	op->map=get_map_from_coord(m, &op->x, &op->y);	1403	break;
1551	x = op->x;	1404	}
1552	y = op->y;
1553		1405
1554	/* this has to be done after we translate the coordinates.	1406	top = tmp;
1555	*/
1556	if(op->nrof && !(flag & INS_NO_MERGE)) {
1557	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)
1558	if (CAN_MERGE(op,tmp)) {
1559	op->nrof+=tmp->nrof;
1560	remove_ob(tmp);
1561	free_object(tmp);
1562	}	1407	}
1563	}
1564		1408
1565	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1409	/* We let update_position deal with figuring out what the space
1566	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1410	* looks like instead of lots of conditions here.
1567	if (!QUERY_FLAG(op, FLAG_ALIVE))	1411	* makes things faster, and effectively the same result.
1568	CLEAR_FLAG(op, FLAG_NO_STEAL);	1412	*/
1569		1413
1570	if (flag & INS_BELOW_ORIGINATOR) {	1414	/* Have object 'fall below' other objects that block view.
1571	if (originator->map != op->map || originator->x != op->x ||	1415	* Unless those objects are exits.
1572	originator->y != op->y) {	1416	* If INS_ON_TOP is used, don't do this processing
1573	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1417	* Need to find the object that in fact blocks view, otherwise
1574	abort();	1418	* stacking is a bit odd.
		1419	*/
		1420	if (!(flag & INS_ON_TOP)
		1421	&& ms.flags () & P_BLOCKSVIEW
		1422	&& (op->face && !faces [op->face].visibility))
		1423	{
		1424	object *last;
		1425
		1426	for (last = top; last != floor; last = last->below)
		1427	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1428	break;
		1429
		1430	/* Check to see if we found the object that blocks view,
		1431	* and make sure we have a below pointer for it so that
		1432	* we can get inserted below this one, which requires we
		1433	* set top to the object below us.
		1434	*/
		1435	if (last && last->below && last != floor)
		1436	top = last->below;
		1437	}
		1438	} /* If objects on this space */
		1439
		1440	if (flag & INS_ABOVE_FLOOR_ONLY)
		1441	top = floor;
		1442
		1443	// insert object above top, or bottom-most if top = 0
		1444	if (!top)
		1445	{
		1446	op->below = 0;
		1447	op->above = ms.bot;
		1448	ms.bot = op;
		1449
		1450	*(op->above ? &op->above->below : &ms.top) = op;
1575	}	1451	}
1576	op->above = originator;
1577	op->below = originator->below;
1578	if (op->below) op->below->above = op;
1579	else SET_MAP_OB(op->map, op->x, op->y, op);
1580	/* since *below* originator, no need to update top */
1581	originator->below = op;
1582	} else {	1452	else
1583	/* If there are other objects, then */
1584	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1585	object *last=NULL;
1586	/*
1587	* If there are multiple objects on this space, we do some trickier handling.
1588	* We've already dealt with merging if appropriate.
1589	* Generally, we want to put the new object on top. But if
1590	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1591	* floor, we want to insert above that and no further.
1592	* Also, if there are spell objects on this space, we stop processing
1593	* once we get to them. This reduces the need to traverse over all of
1594	* them when adding another one - this saves quite a bit of cpu time
1595	* when lots of spells are cast in one area. Currently, it is presumed
1596	* that flying non pickable objects are spell objects.
1597	*/
1598
1599	while (top != NULL) {
1600	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1601	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1602	if (QUERY_FLAG(top, FLAG_NO_PICK)
1603	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1604	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1605	{
1606	/* We insert above top, so we want this object below this */
1607	top=top->below;
1608	break;
1609	}
1610	last = top;
1611	top = top->above;
1612	}
1613	/* Don't want top to be NULL, so set it to the last valid object */
1614	top = last;
1615
1616	/* We let update_position deal with figuring out what the space
1617	* looks like instead of lots of conditions here.
1618	* makes things faster, and effectively the same result.
1619	*/
1620
1621	/* Have object 'fall below' other objects that block view.
1622	* Unless those objects are exits, type 66
1623	* If INS_ON_TOP is used, don't do this processing
1624	* Need to find the object that in fact blocks view, otherwise
1625	* stacking is a bit odd.
1626	*/
1627	if (!(flag & INS_ON_TOP) &&
1628	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1629	(op->face && !op->face->visibility)) {
1630	for (last=top; last != floor; last=last->below)
1631	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1632	/* Check to see if we found the object that blocks view,
1633	* and make sure we have a below pointer for it so that
1634	* we can get inserted below this one, which requires we
1635	* set top to the object below us.
1636	*/
1637	if (last && last->below && last != floor) top=last->below;
1638	}
1639	} /* If objects on this space */
1640	if (flag & INS_MAP_LOAD)
1641	top = GET_MAP_TOP(op->map,op->x,op->y);
1642	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1643
1644	/* Top is the object that our object (op) is going to get inserted above.
1645	*/	1453	{
1646
1647	/* First object on this space */
1648	if (!top) {
1649	op->above = GET_MAP_OB(op->map, op->x, op->y);
1650	if (op->above) op->above->below = op;
1651	op->below = NULL;
1652	SET_MAP_OB(op->map, op->x, op->y, op);
1653	} else { /* get inserted into the stack above top */
1654	op->above = top->above;	1454	op->above = top->above;
1655	if (op->above) op->above->below = op;
1656	op->below = top;
1657	top->above = op;	1455	top->above = op;
		1456
		1457	op->below = top;
		1458	*(op->above ? &op->above->below : &ms.top) = op;
1658	}	1459	}
1659	if (op->above==NULL)	1460	}
1660	SET_MAP_TOP(op->map,op->x, op->y, op);
1661	} /* else not INS_BELOW_ORIGINATOR */
1662		1461
1663	if(op->type==PLAYER)	1462	if (op->is_player ())
		1463	{
1664	op->contr->do_los=1;	1464	op->contr->do_los = 1;
1665		1465	++op->map->players;
1666	/* If we have a floor, we know the player, if any, will be above	1466	op->map->touch ();
1667	* it, so save a few ticks and start from there.
1668	*/
1669	if (!(flag & INS_MAP_LOAD))
1670	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1671	if (tmp->type == PLAYER)
1672	tmp->contr->socket.update_look=1;
1673	}	1467	}
1674		1468
		1469	op->map->dirty = true;
		1470
		1471	if (object *pl = ms.player ())
		1472	//TODO: the floorbox prev/next might need updating
		1473	//esrv_send_item (pl, op);
		1474	//TODO: update floorbox to preserve ordering
		1475	if (pl->contr->ns)
		1476	pl->contr->ns->floorbox_update ();
		1477
1675	/* If this object glows, it may affect lighting conditions that are	1478	/* If this object glows, it may affect lighting conditions that are
1676	* visible to others on this map. But update_all_los is really	1479	* visible to others on this map. But update_all_los is really
1677	* an inefficient way to do this, as it means los for all players	1480	* an inefficient way to do this, as it means los for all players
1678	* on the map will get recalculated. The players could very well	1481	* on the map will get recalculated. The players could very well
1679	* be far away from this change and not affected in any way -	1482	* be far away from this change and not affected in any way -
1680	* this should get redone to only look for players within range,	1483	* this should get redone to only look for players within range,
1681	* or just updating the P_NEED_UPDATE for spaces within this area	1484	* or just updating the P_UPTODATE for spaces within this area
1682	* of effect may be sufficient.	1485	* of effect may be sufficient.
1683	*/	1486	*/
1684	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1487	if (op->affects_los ())
		1488	{
		1489	op->ms ().invalidate ();
1685	update_all_los(op->map, op->x, op->y);	1490	update_all_los (op->map, op->x, op->y);
		1491	}
1686		1492
1687
1688	/* updates flags (blocked, alive, no magic, etc) for this map space */	1493	/* updates flags (blocked, alive, no magic, etc) for this map space */
1689	update_object(op,UP_OBJ_INSERT);	1494	update_object (op, UP_OBJ_INSERT);
1690		1495
		1496	INVOKE_OBJECT (INSERT, op);
1691		1497
1692	/* Don't know if moving this to the end will break anything. However,	1498	/* Don't know if moving this to the end will break anything. However,
1693	* we want to have update_look set above before calling this.	1499	* we want to have floorbox_update called before calling this.
1694	*	1500	*
1695	* check_move_on() must be after this because code called from	1501	* check_move_on() must be after this because code called from
1696	* check_move_on() depends on correct map flags (so functions like	1502	* check_move_on() depends on correct map flags (so functions like
1697	* blocked() and wall() work properly), and these flags are updated by	1503	* blocked() and wall() work properly), and these flags are updated by
1698	* update_object().	1504	* update_object().
1699	*/	1505	*/
1700		1506
1701	/* if this is not the head or flag has been passed, don't check walk on status */	1507	/* if this is not the head or flag has been passed, don't check walk on status */
1702
1703	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1508	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1509	{
1704	if (check_move_on(op, originator))	1510	if (check_move_on (op, originator))
1705	return NULL;	1511	return 0;
1706		1512
1707	/* If we are a multi part object, lets work our way through the check	1513	/* If we are a multi part object, lets work our way through the check
1708	* walk on's.	1514	* walk on's.
1709	*/	1515	*/
1710	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1516	for (object *tmp = op->more; tmp; tmp = tmp->more)
1711	if (check_move_on (tmp, originator))	1517	if (check_move_on (tmp, originator))
1712	return NULL;	1518	return 0;
1713	}	1519	}
		1520
1714	return op;	1521	return op;
1715	}	1522	}
1716		1523
1717	/* this function inserts an object in the map, but if it	1524	/* this function inserts an object in the map, but if it
1718	* finds an object of its own type, it'll remove that one first.	1525	* finds an object of its own type, it'll remove that one first.
1719	* op is the object to insert it under: supplies x and the map.	1526	* op is the object to insert it under: supplies x and the map.
1720	*/	1527	*/
1721	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1528	void
1722	object *tmp;	1529	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1723	object *tmp1;	1530	{
1724
1725	/* first search for itself and remove any old instances */	1531	/* first search for itself and remove any old instances */
1726		1532
1727	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1533	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1728	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1534	if (tmp->arch->archname == archname) /* same archetype */
1729	remove_ob(tmp);	1535	tmp->destroy ();
1730	free_object(tmp);
1731	}
1732	}
1733		1536
1734	tmp1=arch_to_object(find_archetype(arch_string));	1537	object *tmp = archetype::find (archname)->instance ();
1735		1538
1736		1539	tmp->x = op->x;
1737	tmp1->x = op->x; tmp1->y = op->y;	1540	tmp->y = op->y;
		1541
1738	insert_ob_in_map(tmp1,op->map,op,0);	1542	insert_ob_in_map (tmp, op->map, op, 0);
1739	}	1543	}
1740		1544
1741	/*	1545	object *
1742	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1546	object::insert_at (object *where, object *originator, int flags)
1743	* is returned contains nr objects, and the remaining parts contains	1547	{
1744	* the rest (or is removed and freed if that number is 0).	1548	if (where->env)
1745	* On failure, NULL is returned, and the reason put into the	1549	return where->env->insert (this);
1746	* global static errmsg array.	1550	else
1747	*/	1551	return where->map->insert (this, where->x, where->y, originator, flags);
		1552	}
1748		1553
1749	object *get_split_ob(object *orig_ob, uint32 nr) {	1554	// check whether we can put this into the map, respect max_volume, max_items
1750	object *newob;	1555	bool
1751	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1556	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1557	{
		1558	mapspace &ms = m->at (x, y);
1752		1559
1753	if(orig_ob->nrof<nr) {	1560	int items = ms.items ();
1754	sprintf(errmsg,"There are only %d %ss.",
1755	orig_ob->nrof?orig_ob->nrof:1, orig_ob->name);
1756	return NULL;
1757	}
1758	newob = object_create_clone(orig_ob);
1759	if((orig_ob->nrof-=nr)<1) {
1760	if ( ! is_removed)
1761	remove_ob(orig_ob);
1762	free_object2(orig_ob, 1);
1763	}
1764	else if ( ! is_removed) {
1765	if(orig_ob->env!=NULL)
1766	sub_weight (orig_ob->env,orig_ob->weight*nr);
1767	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1768	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1769	LOG(llevDebug,
1770	"Error, Tried to split object whose map is not in memory.\n");
1771	return NULL;
1772	}
1773	}
1774	newob->nrof=nr;
1775		1561
		1562	if (!items // testing !items ensures we can drop at least one item
		1563	|| (items < m->max_items
		1564	&& ms.volume () < m->max_volume))
1776	return newob;	1565	return true;
1777	}
1778		1566
		1567	if (originator && originator->is_player ())
		1568	originator->contr->failmsg (format (
		1569	"No matter how hard you try, you just cannot put the %s here H<Try to remove some items from the floor first.>",
		1570	query_name ()
		1571	));
		1572
		1573	return false;
		1574	}
		1575
1779	/*	1576	/*
1780	* decrease_ob_nr(object, number) decreases a specified number from	1577	* decrease(object, number) decreases a specified number from
1781	* the amount of an object. If the amount reaches 0, the object	1578	* the amount of an object. If the amount reaches 0, the object
1782	* is subsequently removed and freed.	1579	* is subsequently removed and freed.
1783	*	1580	*
1784	* Return value: 'op' if something is left, NULL if the amount reached 0	1581	* Return value: 'op' if something is left, NULL if the amount reached 0
1785	*/	1582	*/
1786		1583	bool
1787	object *decrease_ob_nr (object *op, uint32 i)	1584	object::decrease (sint32 nr)
1788	{	1585	{
1789	object *tmp;	1586	if (!nr)
1790	player *pl;	1587	return true;
1791		1588
1792	if (i == 0) /* objects with op->nrof require this check */	1589	nr = min (nr, nrof);
		1590
		1591	if (nrof > nr)
		1592	{
		1593	nrof -= nr;
		1594	adjust_weight (env, -weight * max (1, nr)); // carrying == 0
		1595
		1596	if (object *pl = visible_to ())
		1597	esrv_update_item (UPD_NROF, pl, this);
		1598
		1599	return true;
		1600	}
		1601	else
		1602	{
		1603	destroy ();
		1604	return false;
		1605	}
		1606	}
		1607
		1608	/*
		1609	* split(ob,nr) splits up ob into two parts. The part which
		1610	* is returned contains nr objects, and the remaining parts contains
		1611	* the rest (or is removed and returned if that number is 0).
		1612	* On failure, NULL is returned.
		1613	*/
		1614	object *
		1615	object::split (sint32 nr)
		1616	{
		1617	int have = number_of ();
		1618
		1619	if (have < nr)
		1620	return 0;
		1621	else if (have == nr)
		1622	{
		1623	remove ();
		1624	return this;
		1625	}
		1626	else
		1627	{
		1628	decrease (nr);
		1629
		1630	object *op = deep_clone ();
		1631	op->nrof = nr;
1793	return op;	1632	return op;
1794
1795	if (i > op->nrof)
1796	i = op->nrof;
1797
1798	if (QUERY_FLAG (op, FLAG_REMOVED))
1799	{	1633	}
1800	op->nrof -= i;	1634	}
		1635
		1636	object *
		1637	insert_ob_in_ob (object *op, object *where)
		1638	{
		1639	if (!where)
1801	}	1640	{
1802	else if (op->env != NULL)	1641	char *dump = dump_object (op);
1803	{	1642	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1804	/* is this object in the players inventory, or sub container	1643	free (dump);
1805	* therein?
1806	*/
1807	tmp = is_player_inv (op->env);
1808	/* nope. Is this a container the player has opened?
1809	* If so, set tmp to that player.
1810	* IMO, searching through all the players will mostly
1811	* likely be quicker than following op->env to the map,
1812	* and then searching the map for a player.
1813	*/
1814	if (!tmp) {
1815	for (pl=first_player; pl; pl=pl->next)
1816	if (pl->ob->container == op->env) break;
1817	if (pl) tmp=pl->ob;
1818	else tmp=NULL;
1819	}
1820
1821	if (i < op->nrof) {
1822	sub_weight (op->env, op->weight * i);
1823	op->nrof -= i;
1824	if (tmp) {
1825	esrv_send_item(tmp, op);
1826	}
1827	} else {
1828	remove_ob (op);
1829	op->nrof = 0;
1830	if (tmp) {
1831	esrv_del_item(tmp->contr, op->count);
1832	}
1833	}
1834	}
1835	else
1836	{
1837	object *above = op->above;
1838
1839	if (i < op->nrof) {
1840	op->nrof -= i;
1841	} else {
1842	remove_ob (op);
1843	op->nrof = 0;
1844	}
1845	/* Since we just removed op, op->above is null */
1846	for (tmp = above; tmp != NULL; tmp = tmp->above)
1847	if (tmp->type == PLAYER) {
1848	if (op->nrof)
1849	esrv_send_item(tmp, op);
1850	else
1851	esrv_del_item(tmp->contr, op->count);
1852	}
1853	}
1854
1855	if (op->nrof) {
1856	return op;	1644	return op;
1857	} else {	1645	}
1858	free_object (op);	1646
1859	return NULL;	1647	if (where->head_ () != where)
1860	}	1648	{
1861	}	1649	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1862		1650	where = where->head;
1863	/*
1864	* add_weight(object, weight) adds the specified weight to an object,
1865	* and also updates how much the environment(s) is/are carrying.
1866	*/
1867
1868	void add_weight (object *op, signed long weight) {
1869	while (op!=NULL) {
1870	if (op->type == CONTAINER) {
1871	weight=(signed long)(weight*(100-op->stats.Str)/100);
1872	}
1873	op->carrying+=weight;
1874	op=op->env;
1875	}	1651	}
1876	}
1877		1652
		1653	return where->insert (op);
		1654	}
		1655
1878	/*	1656	/*
1879	* insert_ob_in_ob(op,environment):	1657	* env->insert (op)
1880	* This function inserts the object op in the linked list	1658	* This function inserts the object op in the linked list
1881	* inside the object environment.	1659	* inside the object environment.
1882	*	1660	*
1883	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1884	* the inventory at the last position or next to other objects of the same
1885	* type.
1886	* Frank: Now sorted by type, archetype and magic!
1887	*
1888	* The function returns now pointer to inserted item, and return value can	1661	* The function returns now pointer to inserted item, and return value can
1889	* be != op, if items are merged. -Tero	1662	* be != op, if items are merged. -Tero
1890	*/	1663	*/
1891		1664	object *
1892	object *insert_ob_in_ob(object *op,object *where) {	1665	object::insert (object *op)
1893	object *tmp, *otmp;	1666	{
1894
1895	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1896	dump_object(op);
1897	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1898	return op;
1899	}
1900	if(where==NULL) {
1901	dump_object(op);
1902	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1903	return op;
1904	}
1905	if (where->head) {
1906	LOG(llevDebug,
1907	"Warning: Tried to insert object wrong part of multipart object.\n");
1908	where = where->head;
1909	}
1910	if (op->more) {	1667	if (op->more)
		1668	{
1911	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1669	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1912	op->name, op->count);
1913	return op;	1670	return op;
1914	}	1671	}
1915	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1672
1916	CLEAR_FLAG(op, FLAG_REMOVED);	1673	op->remove ();
		1674
		1675	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1676
1917	if(op->nrof) {	1677	if (op->nrof)
1918	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1678	for (object *tmp = inv; tmp; tmp = tmp->below)
1919	if ( CAN_MERGE(tmp,op) ) {	1679	if (object::can_merge (tmp, op))
		1680	{
1920	/* return the original object and remove inserted object	1681	/* return the original object and remove inserted object
1921	(client needs the original object) */	1682	(client needs the original object) */
1922	tmp->nrof += op->nrof;	1683	tmp->nrof += op->nrof;
1923	/* Weight handling gets pretty funky. Since we are adding to	1684
1924	* tmp->nrof, we need to increase the weight.	1685	if (object *pl = tmp->visible_to ())
1925	*/	1686	esrv_update_item (UPD_NROF, pl, tmp);
1926	add_weight (where, op->weight*op->nrof);	1687
1927	SET_FLAG(op, FLAG_REMOVED);	1688	adjust_weight (this, op->total_weight ());
1928	free_object(op); /* free the inserted object */	1689
		1690	op->destroy ();
1929	op = tmp;	1691	op = tmp;
1930	remove_ob (op); /* and fix old object's links */	1692	goto inserted;
1931	CLEAR_FLAG(op, FLAG_REMOVED);
1932	break;
1933	}	1693	}
1934		1694
1935	/* I assume combined objects have no inventory	1695	op->owner = 0; // it's his/hers now. period.
1936	* We add the weight - this object could have just been removed	1696	op->map = 0;
1937	* (if it was possible to merge). calling remove_ob will subtract	1697	op->x = 0;
1938	* the weight, so we need to add it in again, since we actually do	1698	op->y = 0;
1939	* the linking below
1940	*/
1941	add_weight (where, op->weight*op->nrof);
1942	} else
1943	add_weight (where, (op->weight+op->carrying));
1944		1699
1945	otmp=is_player_inv(where);
1946	if (otmp&&otmp->contr!=NULL) {
1947	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1948	fix_player(otmp);
1949	}
1950
1951	op->map=NULL;
1952	op->env=where;
1953	op->above=NULL;	1700	op->above = 0;
1954	op->below=NULL;	1701	op->below = inv;
1955	op->x=0,op->y=0;	1702	op->env = this;
1956	op->ox=0,op->oy=0;
1957		1703
		1704	if (inv)
		1705	inv->above = op;
		1706
		1707	inv = op;
		1708
		1709	op->flag [FLAG_REMOVED] = 0;
		1710
		1711	if (object *pl = op->visible_to ())
		1712	esrv_send_item (pl, op);
		1713
		1714	adjust_weight (this, op->total_weight ());
		1715
		1716	inserted:
1958	/* reset the light list and los of the players on the map */	1717	/* reset the light list and los of the players on the map */
1959	if((op->glow_radius!=0)&&where->map)	1718	if (op->glow_radius && is_on_map ())
1960	{	1719	{
1961	#ifdef DEBUG_LIGHTS	1720	update_stats ();
1962	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1721	update_all_los (map, x, y);
1963	op->name);
1964	#endif /* DEBUG_LIGHTS */
1965	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1966	}	1722	}
		1723	else if (is_player ())
		1724	// if this is a player's inventory, update stats
		1725	contr->queue_stats_update ();
1967		1726
1968	/* Client has no idea of ordering so lets not bother ordering it here.	1727	INVOKE_OBJECT (INSERT, this);
1969	* It sure simplifies this function...	1728
1970	*/
1971	if (where->inv==NULL)
1972	where->inv=op;
1973	else {
1974	op->below = where->inv;
1975	op->below->above = op;
1976	where->inv = op;
1977	}
1978	return op;	1729	return op;
1979	}	1730	}
1980		1731
1981	/*	1732	/*
1982	* Checks if any objects has a move_type that matches objects	1733	* Checks if any objects has a move_type that matches objects
…		…
1996	*	1747	*
1997	* MSW 2001-07-08: Check all objects on space, not just those below	1748	* MSW 2001-07-08: Check all objects on space, not just those below
1998	* object being inserted. insert_ob_in_map may not put new objects	1749	* object being inserted. insert_ob_in_map may not put new objects
1999	* on top.	1750	* on top.
2000	*/	1751	*/
2001		1752	int
2002	int check_move_on (object *op, object *originator)	1753	check_move_on (object *op, object *originator)
2003	{	1754	{
		1755	if (QUERY_FLAG (op, FLAG_NO_APPLY))
		1756	return 0;
		1757
2004	object *tmp;	1758	object *tmp;
2005	tag_t tag;
2006	mapstruct *m=op->map;	1759	maptile *m = op->map;
2007	int x=op->x, y=op->y;	1760	int x = op->x, y = op->y;
2008	MoveType move_on, move_slow, move_block;
2009		1761
2010	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1762	mapspace &ms = m->at (x, y);
2011	return 0;
2012		1763
2013	tag = op->count;	1764	ms.update ();
2014		1765
2015	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1766	MoveType move_on = ms.move_on;
2016	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1767	MoveType move_slow = ms.move_slow;
2017	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1768	MoveType move_block = ms.move_block;
2018		1769
2019	/* if nothing on this space will slow op down or be applied,	1770	/* if nothing on this space will slow op down or be applied,
2020	* no need to do checking below. have to make sure move_type	1771	* no need to do checking below. have to make sure move_type
2021	* is set, as lots of objects don't have it set - we treat that	1772	* is set, as lots of objects don't have it set - we treat that
2022	* as walking.	1773	* as walking.
2023	*/	1774	*/
2024	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1775	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
2025	return 0;	1776	return 0;
2026		1777
2027	/* This is basically inverse logic of that below - basically,	1778	/* This is basically inverse logic of that below - basically,
2028	* if the object can avoid the move on or slow move, they do so,	1779	* if the object can avoid the move on or slow move, they do so,
2029	* but can't do it if the alternate movement they are using is	1780	* but can't do it if the alternate movement they are using is
2030	* blocked. Logic on this seems confusing, but does seem correct.	1781	* blocked. Logic on this seems confusing, but does seem correct.
2031	*/	1782	*/
2032	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1783	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
2033	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1784	return 0;
2034		1785
2035	/* The objects have to be checked from top to bottom.	1786	/* The objects have to be checked from top to bottom.
2036	* Hence, we first go to the top:	1787	* Hence, we first go to the top:
2037	*/	1788	*/
2038		1789	for (object *next, *tmp = ms.top; tmp; tmp = next)
2039	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
2040	tmp->above!=NULL; tmp=tmp->above) {
2041	/* Trim the search when we find the first other spell effect
2042	* this helps performance so that if a space has 50 spell objects,
2043	* we don't need to check all of them.
2044	*/
2045	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
2046	}	1790	{
2047	for(;tmp!=NULL; tmp=tmp->below) {	1791	next = tmp->below;
		1792
		1793	if (tmp == op)
2048	if (tmp == op) continue; /* Can't apply yourself */	1794	continue; /* Can't apply yourself */
2049		1795
2050	/* Check to see if one of the movement types should be slowed down.	1796	/* Check to see if one of the movement types should be slowed down.
2051	* Second check makes sure that the movement types not being slowed	1797	* Second check makes sure that the movement types not being slowed
2052	* (~slow_move) is not blocked on this space - just because the	1798	* (~slow_move) is not blocked on this space - just because the
2053	* space doesn't slow down swimming (for example), if you can't actually	1799	* space doesn't slow down swimming (for example), if you can't actually
2054	* swim on that space, can't use it to avoid the penalty.	1800	* swim on that space, can't use it to avoid the penalty.
2055	*/	1801	*/
2056	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1802	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1803	{
2057	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1804	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
2058	((op->move_type & tmp->move_slow) &&
2059	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1805	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
2060		1806	{
2061	float diff;
2062
2063	diff = tmp->move_slow_penalty*FABS(op->speed);	1807	float diff = tmp->move_slow_penalty * fabs (op->speed);
2064	if (op->type == PLAYER) {	1808
		1809	if (op->is_player ())
2065	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1810	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
2066	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1811	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
2067	diff /= 4.0;	1812	diff /= 4.0;
2068	}	1813
2069	}
2070	op->speed_left -= diff;	1814	op->speed_left -= diff;
2071	}	1815	}
2072	}	1816	}
2073		1817
2074	/* Basically same logic as above, except now for actual apply. */	1818	/* Basically same logic as above, except now for actual apply. */
2075	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1819	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
2076	((op->move_type & tmp->move_on) &&
2077	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1820	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
2078		1821	{
2079	move_apply(tmp, op, originator);	1822	move_apply (tmp, op, originator);
		1823
2080	if (was_destroyed (op, tag))	1824	if (op->destroyed ())
2081	return 1;	1825	return 1;
2082		1826
2083	/* what the person/creature stepped onto has moved the object	1827	/* what the person/creature stepped onto has moved the object
2084	* someplace new. Don't process any further - if we did,	1828	* someplace new. Don't process any further - if we did,
2085	* have a feeling strange problems would result.	1829	* have a feeling strange problems would result.
2086	*/	1830	*/
2087	if (op->map != m || op->x != x || op->y != y) return 0;	1831	if (op->map != m || op->x != x || op->y != y)
		1832	return 0;
2088	}	1833	}
2089	}	1834	}
		1835
2090	return 0;	1836	return 0;
2091	}	1837	}
2092		1838
2093	/*	1839	/*
2094	* present_arch(arch, map, x, y) searches for any objects with	1840	* present_arch(arch, map, x, y) searches for any objects with
2095	* a matching archetype at the given map and coordinates.	1841	* a matching archetype at the given map and coordinates.
2096	* The first matching object is returned, or NULL if none.	1842	* The first matching object is returned, or NULL if none.
2097	*/	1843	*/
2098		1844	object *
2099	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1845	present_arch (const archetype *at, maptile *m, int x, int y)
2100	object *tmp;	1846	{
2101	if(m==NULL || out_of_map(m,x,y)) {	1847	if (!m || out_of_map (m, x, y))
		1848	{
2102	LOG(llevError,"Present_arch called outside map.\n");	1849	LOG (llevError, "Present_arch called outside map.\n");
2103	return NULL;	1850	return NULL;
2104	}	1851	}
2105	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1852
2106	if(tmp->arch == at)	1853	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1854	if (tmp->arch->archname == at->archname)
2107	return tmp;	1855	return tmp;
		1856
2108	return NULL;	1857	return NULL;
2109	}	1858	}
2110		1859
2111	/*	1860	/*
2112	* present(type, map, x, y) searches for any objects with	1861	* present(type, map, x, y) searches for any objects with
2113	* a matching type variable at the given map and coordinates.	1862	* a matching type variable at the given map and coordinates.
2114	* The first matching object is returned, or NULL if none.	1863	* The first matching object is returned, or NULL if none.
2115	*/	1864	*/
2116		1865	object *
2117	object *present(unsigned char type,mapstruct *m, int x,int y) {	1866	present (unsigned char type, maptile *m, int x, int y)
2118	object *tmp;	1867	{
2119	if(out_of_map(m,x,y)) {	1868	if (out_of_map (m, x, y))
		1869	{
2120	LOG(llevError,"Present called outside map.\n");	1870	LOG (llevError, "Present called outside map.\n");
2121	return NULL;	1871	return NULL;
2122	}	1872	}
2123	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1873
		1874	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
2124	if(tmp->type==type)	1875	if (tmp->type == type)
2125	return tmp;	1876	return tmp;
		1877
2126	return NULL;	1878	return NULL;
2127	}	1879	}
2128		1880
2129	/*	1881	/*
2130	* present_in_ob(type, object) searches for any objects with	1882	* present_in_ob(type, object) searches for any objects with
2131	* a matching type variable in the inventory of the given object.	1883	* a matching type variable in the inventory of the given object.
2132	* The first matching object is returned, or NULL if none.	1884	* The first matching object is returned, or NULL if none.
2133	*/	1885	*/
2134		1886	object *
2135	object *present_in_ob(unsigned char type, const object *op) {	1887	present_in_ob (unsigned char type, const object *op)
2136	object *tmp;	1888	{
2137	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1889	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2138	if(tmp->type==type)	1890	if (tmp->type == type)
2139	return tmp;	1891	return tmp;
		1892
2140	return NULL;	1893	return NULL;
2141	}	1894	}
2142		1895
2143	/*	1896	/*
2144	* present_in_ob (type, str, object) searches for any objects with	1897	* present_in_ob (type, str, object) searches for any objects with
…		…
2152	* str is the string to match against. Note that we match against	1905	* str is the string to match against. Note that we match against
2153	* the object name, not the archetype name. this is so that the	1906	* the object name, not the archetype name. this is so that the
2154	* spell code can use one object type (force), but change it's name	1907	* spell code can use one object type (force), but change it's name
2155	* to be unique.	1908	* to be unique.
2156	*/	1909	*/
2157		1910	object *
2158	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1911	present_in_ob_by_name (int type, const char *str, const object *op)
2159	object *tmp;	1912	{
2160
2161	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1913	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2162	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1914	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2163	return tmp;	1915	return tmp;
2164	}	1916
2165	return NULL;	1917	return 0;
2166	}	1918	}
2167		1919
2168	/*	1920	/*
2169	* present_arch_in_ob(archetype, object) searches for any objects with	1921	* present_arch_in_ob(archetype, object) searches for any objects with
2170	* a matching archetype in the inventory of the given object.	1922	* a matching archetype in the inventory of the given object.
2171	* The first matching object is returned, or NULL if none.	1923	* The first matching object is returned, or NULL if none.
2172	*/	1924	*/
2173		1925	object *
2174	object *present_arch_in_ob(const archetype *at, const object *op) {	1926	present_arch_in_ob (const archetype *at, const object *op)
2175	object *tmp;	1927	{
2176	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1928	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2177	if( tmp->arch == at)	1929	if (tmp->arch->archname == at->archname)
2178	return tmp;	1930	return tmp;
		1931
2179	return NULL;	1932	return NULL;
2180	}	1933	}
2181		1934
2182	/*	1935	/*
2183	* activate recursively a flag on an object inventory	1936	* activate recursively a flag on an object inventory
2184	*/	1937	*/
		1938	void
2185	void flag_inv(object*op, int flag){	1939	flag_inv (object *op, int flag)
2186	object *tmp;	1940	{
2187	if(op->inv)
2188	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1941	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1942	{
2189	SET_FLAG(tmp, flag);	1943	SET_FLAG (tmp, flag);
2190	flag_inv(tmp,flag);	1944	flag_inv (tmp, flag);
2191	}	1945	}
		1946	}
		1947
2192	}/*	1948	/*
2193	* desactivate recursively a flag on an object inventory	1949	* deactivate recursively a flag on an object inventory
2194	*/	1950	*/
		1951	void
2195	void unflag_inv(object*op, int flag){	1952	unflag_inv (object *op, int flag)
2196	object *tmp;	1953	{
2197	if(op->inv)
2198	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1954	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1955	{
2199	CLEAR_FLAG(tmp, flag);	1956	CLEAR_FLAG (tmp, flag);
2200	unflag_inv(tmp,flag);	1957	unflag_inv (tmp, flag);
2201	}	1958	}
2202	}
2203
2204	/*
2205	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2206	* all it's inventory (recursively).
2207	* If checksums are used, a player will get set_cheat called for
2208	* him/her-self and all object carried by a call to this function.
2209	*/
2210
2211	void set_cheat(object *op) {
2212	SET_FLAG(op, FLAG_WAS_WIZ);
2213	flag_inv(op, FLAG_WAS_WIZ);
2214	}	1959	}
2215		1960
2216	/*	1961	/*
2217	* find_free_spot(object, map, x, y, start, stop) will search for	1962	* find_free_spot(object, map, x, y, start, stop) will search for
2218	* a spot at the given map and coordinates which will be able to contain	1963	* a spot at the given map and coordinates which will be able to contain
…		…
2220	* to search (see the freearr_x/y[] definition).	1965	* to search (see the freearr_x/y[] definition).
2221	* It returns a random choice among the alternatives found.	1966	* It returns a random choice among the alternatives found.
2222	* start and stop are where to start relative to the free_arr array (1,9	1967	* start and stop are where to start relative to the free_arr array (1,9
2223	* does all 4 immediate directions). This returns the index into the	1968	* does all 4 immediate directions). This returns the index into the
2224	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1969	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2225	* Note - this only checks to see if there is space for the head of the
2226	* object - if it is a multispace object, this should be called for all
2227	* pieces.
2228	* Note2: This function does correctly handle tiled maps, but does not	1970	* Note: This function does correctly handle tiled maps, but does not
2229	* inform the caller. However, insert_ob_in_map will update as	1971	* inform the caller. However, insert_ob_in_map will update as
2230	* necessary, so the caller shouldn't need to do any special work.	1972	* necessary, so the caller shouldn't need to do any special work.
2231	* Note - updated to take an object instead of archetype - this is necessary	1973	* Note - updated to take an object instead of archetype - this is necessary
2232	* because arch_blocked (now ob_blocked) needs to know the movement type	1974	* because arch_blocked (now ob_blocked) needs to know the movement type
2233	* to know if the space in question will block the object. We can't use	1975	* to know if the space in question will block the object. We can't use
2234	* the archetype because that isn't correct if the monster has been	1976	* the archetype because that isn't correct if the monster has been
2235	* customized, changed states, etc.	1977	* customized, changed states, etc.
2236	*/	1978	*/
2237		1979	int
2238	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1980	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1981	{
		1982	int altern[SIZEOFFREE];
2239	int i,index=0, flag;	1983	int index = 0, flag;
2240	static int altern[SIZEOFFREE];
2241		1984
2242	for(i=start;i<stop;i++) {	1985	for (int i = start; i < stop; i++)
2243	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1986	{
2244	if(!flag)	1987	mapxy pos (m, x, y); pos.move (i);
		1988
		1989	if (!pos.normalise ())
		1990	continue;
		1991
		1992	mapspace &ms = *pos;
		1993
		1994	if (ms.flags () & P_IS_ALIVE)
		1995	continue;
		1996
		1997	/* However, often
		1998	* ob doesn't have any move type (when used to place exits)
		1999	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2000	*/
		2001	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2002	{
2245	altern[index++]=i;	2003	altern [index++] = i;
		2004	continue;
		2005	}
2246		2006
2247	/* Basically, if we find a wall on a space, we cut down the search size.	2007	/* Basically, if we find a wall on a space, we cut down the search size.
2248	* In this way, we won't return spaces that are on another side of a wall.	2008	* In this way, we won't return spaces that are on another side of a wall.
2249	* This mostly work, but it cuts down the search size in all directions -	2009	* This mostly work, but it cuts down the search size in all directions -
2250	* if the space being examined only has a wall to the north and empty	2010	* if the space being examined only has a wall to the north and empty
2251	* spaces in all the other directions, this will reduce the search space	2011	* spaces in all the other directions, this will reduce the search space
2252	* to only the spaces immediately surrounding the target area, and	2012	* to only the spaces immediately surrounding the target area, and
2253	* won't look 2 spaces south of the target space.	2013	* won't look 2 spaces south of the target space.
2254	*/	2014	*/
2255	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2015	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2016	{
2256	stop=maxfree[i];	2017	stop = maxfree[i];
2257	}	2018	continue;
2258	if(!index) return -1;	2019	}
2259	return altern[RANDOM()%index];
2260	}
2261		2020
		2021	/* Note it is intentional that we check ob - the movement type of the
		2022	* head of the object should correspond for the entire object.
		2023	*/
		2024	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2025	continue;
		2026
		2027	if (ob->blocked (pos.m, pos.x, pos.y))
		2028	continue;
		2029
		2030	altern [index++] = i;
		2031	}
		2032
		2033	if (!index)
		2034	return -1;
		2035
		2036	return altern [rndm (index)];
		2037	}
		2038
2262	/*	2039	/*
2263	* find_first_free_spot(archetype, mapstruct, x, y) works like	2040	* find_first_free_spot(archetype, maptile, x, y) works like
2264	* find_free_spot(), but it will search max number of squares.	2041	* find_free_spot(), but it will search max number of squares.
2265	* But it will return the first available spot, not a random choice.	2042	* But it will return the first available spot, not a random choice.
2266	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2043	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2267	*/	2044	*/
2268		2045	int
2269	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2046	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2270	int i;	2047	{
2271	for(i=0;i<SIZEOFFREE;i++) {	2048	for (int i = 0; i < SIZEOFFREE; i++)
2272	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2049	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2273	return i;	2050	return i;
2274	}	2051
2275	return -1;	2052	return -1;
2276	}	2053	}
2277		2054
2278	/*	2055	/*
2279	* The function permute(arr, begin, end) randomly reorders the array	2056	* The function permute(arr, begin, end) randomly reorders the array
2280	* arr[begin..end-1].	2057	* arr[begin..end-1].
		2058	* now uses a fisher-yates shuffle, old permute was broken
2281	*/	2059	*/
		2060	static void
2282	static void permute(int *arr, int begin, int end)	2061	permute (int *arr, int begin, int end)
2283	{	2062	{
2284	int i, j, tmp, len;	2063	arr += begin;
		2064	end -= begin;
2285		2065
2286	len = end-begin;	2066	while (--end)
2287	for(i = begin; i < end; i++)	2067	swap (arr [end], arr [rndm (end + 1)]);
2288	{
2289	j = begin+RANDOM()%len;
2290
2291	tmp = arr[i];
2292	arr[i] = arr[j];
2293	arr[j] = tmp;
2294	}
2295	}	2068	}
2296		2069
2297	/* new function to make monster searching more efficient, and effective!	2070	/* new function to make monster searching more efficient, and effective!
2298	* This basically returns a randomized array (in the passed pointer) of	2071	* This basically returns a randomized array (in the passed pointer) of
2299	* the spaces to find monsters. In this way, it won't always look for	2072	* the spaces to find monsters. In this way, it won't always look for
2300	* monsters to the north first. However, the size of the array passed	2073	* monsters to the north first. However, the size of the array passed
2301	* covers all the spaces, so within that size, all the spaces within	2074	* covers all the spaces, so within that size, all the spaces within
2302	* the 3x3 area will be searched, just not in a predictable order.	2075	* the 3x3 area will be searched, just not in a predictable order.
2303	*/	2076	*/
		2077	void
2304	void get_search_arr(int *search_arr)	2078	get_search_arr (int *search_arr)
2305	{	2079	{
2306	int i;	2080	int i;
2307		2081
2308	for(i = 0; i < SIZEOFFREE; i++)	2082	for (i = 0; i < SIZEOFFREE; i++)
2309	{
2310	search_arr[i] = i;	2083	search_arr[i] = i;
2311	}
2312		2084
2313	permute(search_arr, 1, SIZEOFFREE1+1);	2085	permute (search_arr, 1, SIZEOFFREE1 + 1);
2314	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2086	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2315	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2087	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2316	}	2088	}
2317		2089
2318	/*	2090	/*
2319	* find_dir(map, x, y, exclude) will search some close squares in the	2091	* find_dir(map, x, y, exclude) will search some close squares in the
2320	* given map at the given coordinates for live objects.	2092	* given map at the given coordinates for live objects.
…		…
2325	* Perhaps incorrectly, but I'm making the assumption that exclude	2097	* Perhaps incorrectly, but I'm making the assumption that exclude
2326	* is actually want is going to try and move there. We need this info	2098	* is actually want is going to try and move there. We need this info
2327	* because we have to know what movement the thing looking to move	2099	* because we have to know what movement the thing looking to move
2328	* there is capable of.	2100	* there is capable of.
2329	*/	2101	*/
2330		2102	int
2331	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2103	find_dir (maptile *m, int x, int y, object *exclude)
		2104	{
2332	int i,max=SIZEOFFREE, mflags;	2105	int max = SIZEOFFREE, mflags;
2333	sint16 nx, ny;
2334	object *tmp;
2335	mapstruct *mp;
2336	MoveType blocked, move_type;	2106	MoveType move_type;
2337		2107
2338	if (exclude && exclude->head) {	2108	if (exclude && exclude->head_ () != exclude)
		2109	{
2339	exclude = exclude->head;	2110	exclude = exclude->head;
2340	move_type = exclude->move_type;	2111	move_type = exclude->move_type;
2341	} else {	2112	}
		2113	else
		2114	{
2342	/* If we don't have anything, presume it can use all movement types. */	2115	/* If we don't have anything, presume it can use all movement types. */
2343	move_type=MOVE_ALL;	2116	move_type = MOVE_ALL;
		2117	}
		2118
		2119	for (int i = 1; i < max; i++)
2344	}	2120	{
		2121	mapxy pos (m, x, y);
		2122	pos.move (i);
2345		2123
2346	for(i=1;i<max;i++) {	2124	if (!pos.normalise ())
2347	mp = m;
2348	nx = x + freearr_x[i];	2125	max = maxfree[i];
2349	ny = y + freearr_y[i];	2126	else
		2127	{
		2128	mapspace &ms = *pos;
2350		2129
2351	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2130	if ((move_type & ms.move_block) == move_type)
2352	if (mflags & P_OUT_OF_MAP) {
2353	max = maxfree[i];	2131	max = maxfree [i];
2354	} else {
2355	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2356
2357	if ((move_type & blocked) == move_type) {
2358	max=maxfree[i];
2359	} else if (mflags & P_IS_ALIVE) {	2132	else if (ms.flags () & P_IS_ALIVE)
2360	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2133	{
2361	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2134	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2135	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2362	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2136	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2363	break;
2364	}
2365	}
2366	if(tmp) {
2367	return freedir[i];	2137	return freedir [i];
2368	}
2369	}	2138	}
2370	}	2139	}
2371	}	2140	}
		2141
2372	return 0;	2142	return 0;
2373	}	2143	}
2374		2144
2375	/*	2145	/*
2376	* distance(object 1, object 2) will return the square of the	2146	* distance(object 1, object 2) will return the square of the
2377	* distance between the two given objects.	2147	* distance between the two given objects.
2378	*/	2148	*/
2379		2149	int
2380	int distance(const object *ob1, const object *ob2) {	2150	distance (const object *ob1, const object *ob2)
2381	int i;	2151	{
2382	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2152	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2383	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2384	return i;
2385	}	2153	}
2386		2154
2387	/*	2155	/*
2388	* find_dir_2(delta-x,delta-y) will return a direction in which	2156	* find_dir_2(delta-x,delta-y) will return a direction in which
2389	* an object which has subtracted the x and y coordinates of another	2157	* an object which has subtracted the x and y coordinates of another
2390	* object, needs to travel toward it.	2158	* object, needs to travel toward it.
2391	*/	2159	*/
2392		2160	int
2393	int find_dir_2(int x, int y) {	2161	find_dir_2 (int x, int y)
		2162	{
2394	int q;	2163	int q;
2395		2164
2396	if(y)	2165	if (y)
2397	q=x*100/y;	2166	q = x * 100 / y;
2398	else if (x)	2167	else if (x)
2399	q= -300*x;	2168	q = -300 * x;
2400	else	2169	else
2401	return 0;	2170	return 0;
2402		2171
2403	if(y>0) {	2172	if (y > 0)
		2173	{
2404	if(q < -242)	2174	if (q < -242)
2405	return 3 ;	2175	return 3;
2406	if (q < -41)	2176	if (q < -41)
2407	return 2 ;	2177	return 2;
2408	if (q < 41)	2178	if (q < 41)
2409	return 1 ;	2179	return 1;
2410	if (q < 242)	2180	if (q < 242)
2411	return 8 ;	2181	return 8;
2412	return 7 ;	2182	return 7;
2413	}	2183	}
2414		2184
2415	if (q < -242)	2185	if (q < -242)
2416	return 7 ;	2186	return 7;
2417	if (q < -41)	2187	if (q < -41)
2418	return 6 ;	2188	return 6;
2419	if (q < 41)	2189	if (q < 41)
2420	return 5 ;	2190	return 5;
2421	if (q < 242)	2191	if (q < 242)
2422	return 4 ;	2192	return 4;
2423		2193
2424	return 3 ;	2194	return 3;
2425	}
2426
2427	/*
2428	* absdir(int): Returns a number between 1 and 8, which represent
2429	* the "absolute" direction of a number (it actually takes care of
2430	* "overflow" in previous calculations of a direction).
2431	*/
2432
2433	int absdir(int d) {
2434	while(d<1) d+=8;
2435	while(d>8) d-=8;
2436	return d;
2437	}	2195	}
2438		2196
2439	/*	2197	/*
2440	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2198	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2441	* between two directions (which are expected to be absolute (see absdir())	2199	* between two directions (which are expected to be absolute (see absdir())
2442	*/	2200	*/
2443		2201	int
2444	int dirdiff(int dir1, int dir2) {	2202	dirdiff (int dir1, int dir2)
		2203	{
2445	int d;	2204	int d;
		2205
2446	d = abs(dir1 - dir2);	2206	d = abs (dir1 - dir2);
2447	if(d>4)	2207	if (d > 4)
2448	d = 8 - d;	2208	d = 8 - d;
		2209
2449	return d;	2210	return d;
2450	}	2211	}
2451		2212
2452	/* peterm:	2213	/* peterm:
2453	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2214	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2456	* This basically means that if direction is 15, then it could either go	2217	* This basically means that if direction is 15, then it could either go
2457	* direction 4, 14, or 16 to get back to where we are.	2218	* direction 4, 14, or 16 to get back to where we are.
2458	* Moved from spell_util.c to object.c with the other related direction	2219	* Moved from spell_util.c to object.c with the other related direction
2459	* functions.	2220	* functions.
2460	*/	2221	*/
2461
2462	int reduction_dir[SIZEOFFREE][3] = {	2222	static const int reduction_dir[SIZEOFFREE][3] = {
2463	{0,0,0}, /* 0 */	2223	{0, 0, 0}, /* 0 */
2464	{0,0,0}, /* 1 */	2224	{0, 0, 0}, /* 1 */
2465	{0,0,0}, /* 2 */	2225	{0, 0, 0}, /* 2 */
2466	{0,0,0}, /* 3 */	2226	{0, 0, 0}, /* 3 */
2467	{0,0,0}, /* 4 */	2227	{0, 0, 0}, /* 4 */
2468	{0,0,0}, /* 5 */	2228	{0, 0, 0}, /* 5 */
2469	{0,0,0}, /* 6 */	2229	{0, 0, 0}, /* 6 */
2470	{0,0,0}, /* 7 */	2230	{0, 0, 0}, /* 7 */
2471	{0,0,0}, /* 8 */	2231	{0, 0, 0}, /* 8 */
2472	{8,1,2}, /* 9 */	2232	{8, 1, 2}, /* 9 */
2473	{1,2,-1}, /* 10 */	2233	{1, 2, -1}, /* 10 */
2474	{2,10,12}, /* 11 */	2234	{2, 10, 12}, /* 11 */
2475	{2,3,-1}, /* 12 */	2235	{2, 3, -1}, /* 12 */
2476	{2,3,4}, /* 13 */	2236	{2, 3, 4}, /* 13 */
2477	{3,4,-1}, /* 14 */	2237	{3, 4, -1}, /* 14 */
2478	{4,14,16}, /* 15 */	2238	{4, 14, 16}, /* 15 */
2479	{5,4,-1}, /* 16 */	2239	{5, 4, -1}, /* 16 */
2480	{4,5,6}, /* 17 */	2240	{4, 5, 6}, /* 17 */
2481	{6,5,-1}, /* 18 */	2241	{6, 5, -1}, /* 18 */
2482	{6,20,18}, /* 19 */	2242	{6, 20, 18}, /* 19 */
2483	{7,6,-1}, /* 20 */	2243	{7, 6, -1}, /* 20 */
2484	{6,7,8}, /* 21 */	2244	{6, 7, 8}, /* 21 */
2485	{7,8,-1}, /* 22 */	2245	{7, 8, -1}, /* 22 */
2486	{8,22,24}, /* 23 */	2246	{8, 22, 24}, /* 23 */
2487	{8,1,-1}, /* 24 */	2247	{8, 1, -1}, /* 24 */
2488	{24,9,10}, /* 25 */	2248	{24, 9, 10}, /* 25 */
2489	{9,10,-1}, /* 26 */	2249	{9, 10, -1}, /* 26 */
2490	{10,11,-1}, /* 27 */	2250	{10, 11, -1}, /* 27 */
2491	{27,11,29}, /* 28 */	2251	{27, 11, 29}, /* 28 */
2492	{11,12,-1}, /* 29 */	2252	{11, 12, -1}, /* 29 */
2493	{12,13,-1}, /* 30 */	2253	{12, 13, -1}, /* 30 */
2494	{12,13,14}, /* 31 */	2254	{12, 13, 14}, /* 31 */
2495	{13,14,-1}, /* 32 */	2255	{13, 14, -1}, /* 32 */
2496	{14,15,-1}, /* 33 */	2256	{14, 15, -1}, /* 33 */
2497	{33,15,35}, /* 34 */	2257	{33, 15, 35}, /* 34 */
2498	{16,15,-1}, /* 35 */	2258	{16, 15, -1}, /* 35 */
2499	{17,16,-1}, /* 36 */	2259	{17, 16, -1}, /* 36 */
2500	{18,17,16}, /* 37 */	2260	{18, 17, 16}, /* 37 */
2501	{18,17,-1}, /* 38 */	2261	{18, 17, -1}, /* 38 */
2502	{18,19,-1}, /* 39 */	2262	{18, 19, -1}, /* 39 */
2503	{41,19,39}, /* 40 */	2263	{41, 19, 39}, /* 40 */
2504	{19,20,-1}, /* 41 */	2264	{19, 20, -1}, /* 41 */
2505	{20,21,-1}, /* 42 */	2265	{20, 21, -1}, /* 42 */
2506	{20,21,22}, /* 43 */	2266	{20, 21, 22}, /* 43 */
2507	{21,22,-1}, /* 44 */	2267	{21, 22, -1}, /* 44 */
2508	{23,22,-1}, /* 45 */	2268	{23, 22, -1}, /* 45 */
2509	{45,47,23}, /* 46 */	2269	{45, 47, 23}, /* 46 */
2510	{23,24,-1}, /* 47 */	2270	{23, 24, -1}, /* 47 */
2511	{24,9,-1}}; /* 48 */	2271	{24, 9, -1}
		2272	}; /* 48 */
2512		2273
2513	/* Recursive routine to step back and see if we can	2274	/* Recursive routine to step back and see if we can
2514	* find a path to that monster that we found. If not,	2275	* find a path to that monster that we found. If not,
2515	* we don't bother going toward it. Returns 1 if we	2276	* we don't bother going toward it. Returns 1 if we
2516	* can see a direct way to get it	2277	* can see a direct way to get it
2517	* Modified to be map tile aware -.MSW	2278	* Modified to be map tile aware -.MSW
2518	*/	2279	*/
2519		2280	int
2520
2521	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2281	can_see_monsterP (maptile *m, int x, int y, int dir)
		2282	{
2522	sint16 dx, dy;	2283	sint16 dx, dy;
2523	int mflags;	2284	int mflags;
2524		2285
		2286	if (dir < 0)
2525	if(dir<0) return 0; /* exit condition: invalid direction */	2287	return 0; /* exit condition: invalid direction */
2526		2288
2527	dx = x + freearr_x[dir];	2289	dx = x + freearr_x[dir];
2528	dy = y + freearr_y[dir];	2290	dy = y + freearr_y[dir];
2529		2291
2530	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2292	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2531		2293
2532	/* This functional arguably was incorrect before - it was	2294	/* This functional arguably was incorrect before - it was
2533	* checking for P_WALL - that was basically seeing if	2295	* checking for P_WALL - that was basically seeing if
2534	* we could move to the monster - this is being more	2296	* we could move to the monster - this is being more
2535	* literal on if we can see it. To know if we can actually	2297	* literal on if we can see it. To know if we can actually
2536	* move to the monster, we'd need the monster passed in or	2298	* move to the monster, we'd need the monster passed in or
2537	* at least its move type.	2299	* at least its move type.
2538	*/	2300	*/
2539	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2301	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2302	return 0;
2540		2303
2541	/* yes, can see. */	2304	/* yes, can see. */
2542	if(dir < 9) return 1;	2305	if (dir < 9)
		2306	return 1;
		2307
2543	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2308	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2544	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2309	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2545	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2310	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2546	}	2311	}
2547		2312
2548
2549
2550	/*	2313	/*
2551	* can_pick(picker, item): finds out if an object is possible to be	2314	* can_pick(picker, item): finds out if an object is possible to be
2552	* picked up by the picker. Returnes 1 if it can be	2315	* picked up by the picker. Returnes 1 if it can be
2553	* picked up, otherwise 0.	2316	* picked up, otherwise 0.
2554	*	2317	*
2555	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2318	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2556	* core dumps if they do.	2319	* core dumps if they do.
2557	*	2320	*
2558	* Add a check so we can't pick up invisible objects (0.93.8)	2321	* Add a check so we can't pick up invisible objects (0.93.8)
2559	*/	2322	*/
2560		2323	int
2561	int can_pick(const object *who, const object *item) {	2324	can_pick (const object *who, const object *item)
		2325	{
2562	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2326	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2563	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2327	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2564	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2328	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2565	(who->type==PLAYER||item->weight<who->weight/3));
2566	}	2329	}
2567
2568		2330
2569	/*	2331	/*
2570	* create clone from object to another	2332	* create clone from object to another
2571	*/	2333	*/
2572	object *object_create_clone (object *asrc) {	2334	object *
2573	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2335	object::deep_clone ()
		2336	{
		2337	assert (("deep_clone called on non-head object", is_head ()));
2574		2338
2575	if(!asrc) return NULL;	2339	object *dst = clone ();
2576	src = asrc;
2577	if(src->head)
2578	src = src->head;
2579		2340
2580	prev = NULL;	2341	object *prev = dst;
2581	for(part = src; part; part = part->more) {	2342	for (object *part = this->more; part; part = part->more)
2582	tmp = get_object();	2343	{
2583	copy_object(part,tmp);	2344	object *tmp = part->clone ();
2584	tmp->x -= src->x;
2585	tmp->y -= src->y;
2586	if(!part->head) {
2587	dst = tmp;
2588	tmp->head = NULL;
2589	} else {
2590	tmp->head = dst;	2345	tmp->head = dst;
2591	}
2592	tmp->more = NULL;
2593	if(prev)
2594	prev->more = tmp;	2346	prev->more = tmp;
2595	prev = tmp;	2347	prev = tmp;
2596	}	2348	}
2597	/*** copy inventory ***/	2349
2598	for(item = src->inv; item; item = item->below) {	2350	for (object *item = inv; item; item = item->below)
2599	(void) insert_ob_in_ob(object_create_clone(item),dst);	2351	insert_ob_in_ob (item->deep_clone (), dst);
2600	}
2601		2352
2602	return dst;	2353	return dst;
2603	}
2604
2605	/* return true if the object was destroyed, 0 otherwise */
2606	int was_destroyed (const object *op, tag_t old_tag)
2607	{
2608	/* checking for FLAG_FREED isn't necessary, but makes this function more
2609	* robust */
2610	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2611	}
2612
2613	/* GROS - Creates an object using a string representing its content. */
2614	/* Basically, we save the content of the string to a temp file, then call */
2615	/* load_object on it. I admit it is a highly inefficient way to make things, */
2616	/* but it was simple to make and allows reusing the load_object function. */
2617	/* Remember not to use load_object_str in a time-critical situation. */
2618	/* Also remember that multiparts objects are not supported for now. */
2619
2620	object* load_object_str(const char *obstr)
2621	{
2622	object *op;
2623	char filename[MAX_BUF];
2624	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2625
2626	FILE *tempfile=fopen(filename,"w");
2627	if (tempfile == NULL)
2628	{
2629	LOG(llevError,"Error - Unable to access load object temp file\n");
2630	return NULL;
2631	};
2632	fprintf(tempfile,obstr);
2633	fclose(tempfile);
2634
2635	op=get_object();
2636
2637	object_thawer thawer (filename);
2638	if (thawer)
2639	load_object(thawer,op,LO_NEWFILE,0);
2640	LOG(llevDebug," load str completed, object=%s\n",op->name);
2641	CLEAR_FLAG(op,FLAG_REMOVED);
2642
2643	return op;
2644	}	2354	}
2645		2355
2646	/* This returns the first object in who's inventory that	2356	/* This returns the first object in who's inventory that
2647	* has the same type and subtype match.	2357	* has the same type and subtype match.
2648	* returns NULL if no match.	2358	* returns NULL if no match.
2649	*/	2359	*/
		2360	object *
2650	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2361	find_obj_by_type_subtype (const object *who, int type, int subtype)
2651	{	2362	{
2652	object *tmp;
2653
2654	for (tmp=who->inv; tmp; tmp=tmp->below)	2363	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2655	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2364	if (tmp->type == type && tmp->subtype == subtype)
		2365	return tmp;
2656		2366
2657	return NULL;	2367	return 0;
2658	}	2368	}
2659		2369
2660	/* If ob has a field named key, return the link from the list,	2370	shstr_tmp
2661	* otherwise return NULL.	2371	object::kv_get (shstr_tmp key) const
2662	*	2372	{
2663	* key must be a passed in shared string - otherwise, this won't	2373	for (key_value *kv = key_values; kv; kv = kv->next)
2664	* do the desired thing.	2374	if (kv->key == key)
2665	*/	2375	return kv->value;
2666	key_value * get_ob_key_link(const object * ob, const char * key) {	2376
2667	key_value * link;	2377	return shstr ();
		2378	}
		2379
		2380	void
		2381	object::kv_set (shstr_tmp key, shstr_tmp value)
		2382	{
		2383	for (key_value *kv = key_values; kv; kv = kv->next)
		2384	if (kv->key == key)
		2385	{
		2386	kv->value = value;
		2387	return;
		2388	}
		2389
		2390	key_value *kv = new key_value;
		2391
		2392	kv->next = key_values;
		2393	kv->key = key;
		2394	kv->value = value;
		2395
		2396	key_values = kv;
		2397	}
		2398
		2399	void
		2400	object::kv_del (shstr_tmp key)
		2401	{
		2402	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2403	if ((*kvp)->key == key)
		2404	{
		2405	key_value *kv = *kvp;
		2406	*kvp = (*kvp)->next;
		2407	delete kv;
		2408	return;
		2409	}
		2410	}
		2411
		2412	object::depth_iterator::depth_iterator (object *container)
		2413	: iterator_base (container)
		2414	{
		2415	while (item->inv)
		2416	item = item->inv;
		2417	}
		2418
		2419	void
		2420	object::depth_iterator::next ()
		2421	{
		2422	if (item->below)
2668		2423	{
2669	for (link = ob->key_values; link != NULL; link = link->next) {	2424	item = item->below;
2670	if (link->key == key) {	2425
2671	return link;	2426	while (item->inv)
		2427	item = item->inv;
		2428	}
		2429	else
		2430	item = item->env;
		2431	}
		2432
		2433	const char *
		2434	object::flag_desc (char *desc, int len) const
		2435	{
		2436	char *p = desc;
		2437	bool first = true;
		2438
		2439	*p = 0;
		2440
		2441	for (int i = 0; i < NUM_FLAGS; i++)
		2442	{
		2443	if (len <= 10) // magic constant!
		2444	{
		2445	snprintf (p, len, ",...");
		2446	break;
2672	}	2447	}
2673	}
2674
2675	return NULL;
2676	}
2677		2448
2678	/*	2449	if (flag [i])
2679	* Returns the value of op has an extra_field for key, or NULL.
2680	*
2681	* The argument doesn't need to be a shared string.
2682	*
2683	* The returned string is shared.
2684	*/
2685	const char * get_ob_key_value(const object * op, const char * const key) {
2686	key_value * link;
2687	const char * canonical_key;
2688
2689	canonical_key = find_string(key);
2690
2691	if (canonical_key == NULL) {
2692	/* 1. There being a field named key on any object
2693	* implies there'd be a shared string to find.
2694	* 2. Since there isn't, no object has this field.
2695	* 3. Therefore, *this* object doesn't have this field.
2696	*/	2450	{
2697	return NULL;	2451	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2698	}	2452	len -= cnt;
2699		2453	p += cnt;
2700	/* This is copied from get_ob_key_link() above -	2454	first = false;
2701	* only 4 lines, and saves the function call overhead.
2702	*/
2703	for (link = op->key_values; link != NULL; link = link->next) {
2704	if (link->key == canonical_key) {
2705	return link->value;
2706	}	2455	}
2707	}	2456	}
		2457
		2458	return desc;
		2459	}
		2460
		2461	// return a suitable string describing an object in enough detail to find it
		2462	const char *
		2463	object::debug_desc (char *info) const
		2464	{
		2465	char flagdesc[512];
		2466	char info2[256 * 4];
		2467	char *p = info;
		2468
		2469	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2470	count,
		2471	uuid.c_str (),
		2472	&name,
		2473	title ? ",title:\"" : "",
		2474	title ? (const char *)title : "",
		2475	title ? "\"" : "",
		2476	flag_desc (flagdesc, 512), type);
		2477
		2478	if (!flag[FLAG_REMOVED] && env)
		2479	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2480
		2481	if (map)
		2482	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2483
		2484	return info;
		2485	}
		2486
		2487	const char *
		2488	object::debug_desc () const
		2489	{
		2490	static char info[3][256 * 4];
		2491	static int info_idx;
		2492
		2493	return debug_desc (info [++info_idx % 3]);
		2494	}
		2495
		2496	struct region *
		2497	object::region () const
		2498	{
		2499	return map ? map->region (x, y)
		2500	: region::default_region ();
		2501	}
		2502
		2503	void
		2504	object::open_container (object *new_container)
		2505	{
		2506	if (container == new_container)
2708	return NULL;	2507	return;
2709	}
2710		2508
		2509	object *old_container = container;
2711		2510
2712	/*	2511	if (old_container)
2713	* Updates the canonical_key in op to value.
2714	*
2715	* canonical_key is a shared string (value doesn't have to be).
2716	*
2717	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2718	* keys.
2719	*
2720	* Returns TRUE on success.
2721	*/
2722	int set_ob_key_value_s(object * op, const char * canonical_key, const char * value, int add_key) {
2723	key_value * field = NULL, *last=NULL;
2724		2512	{
2725	for (field=op->key_values; field != NULL; field=field->next) {	2513	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2726	if (field->key != canonical_key) {	2514	return;
2727	last = field;	2515
2728	continue;	2516	#if 0
		2517	// remove the "Close old_container" object.
		2518	if (object *closer = old_container->inv)
		2519	if (closer->type == CLOSE_CON)
		2520	closer->destroy ();
		2521	#endif
		2522
		2523	// make sure the container is available
		2524	esrv_send_item (this, old_container);
		2525
		2526	old_container->flag [FLAG_APPLIED] = false;
		2527	container = 0;
		2528
		2529	// client needs item update to make it work, client bug requires this to be separate
		2530	esrv_update_item (UPD_FLAGS, this, old_container);
		2531
		2532	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2533	play_sound (sound_find ("chest_close"));
		2534	}
		2535
		2536	if (new_container)
		2537	{
		2538	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2539	return;
		2540
		2541	// TODO: this does not seem to serve any purpose anymore?
		2542	#if 0
		2543	// insert the "Close Container" object.
		2544	if (archetype *closer = new_container->other_arch)
		2545	{
		2546	object *closer = new_container->other_arch->instance ();
		2547	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2548	new_container->insert (closer);
2729	}	2549	}
		2550	#endif
		2551
		2552	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2553
		2554	// make sure the container is available, client bug requires this to be separate
		2555	esrv_send_item (this, new_container);
		2556
		2557	new_container->flag [FLAG_APPLIED] = true;
		2558	container = new_container;
		2559
		2560	// client needs flag change
		2561	esrv_update_item (UPD_FLAGS, this, new_container);
		2562	esrv_send_inventory (this, new_container);
		2563	play_sound (sound_find ("chest_open"));
2730		2564	}
2731	if (field->value) FREE_AND_CLEAR_STR(field->value);	2565	// else if (!old_container->env && contr && contr->ns)
2732	if (value)	2566	// contr->ns->floorbox_reset ();
2733	field->value = add_string(value);	2567	}
2734	else {
2735	/* Basically, if the archetype has this key set,
2736	* we need to store the null value so when we save
2737	* it, we save the empty value so that when we load,
2738	* we get this value back again.
2739	*/
2740	if (get_ob_key_link(&op->arch->clone, canonical_key))
2741	field->value = NULL;
2742	else {
2743	/* Delete this link */
2744	if (field->key) FREE_AND_CLEAR_STR(field->key);
2745	if (field->value) FREE_AND_CLEAR_STR(field->value);
2746	if (last) last->next = field->next;
2747	else op->key_values = field->next;
2748	free(field);
2749	}
2750	}
2751	return TRUE;
2752	}
2753	/* IF we get here, key doesn't exist */
2754		2568
2755	/* No field, we'll have to add it. */	2569	object *
		2570	object::force_find (shstr_tmp name)
		2571	{
		2572	/* cycle through his inventory to look for the MARK we want to
		2573	* place
		2574	*/
		2575	for (object *tmp = inv; tmp; tmp = tmp->below)
		2576	if (tmp->type == FORCE && tmp->slaying == name)
		2577	return splay (tmp);
		2578
		2579	return 0;
		2580	}
		2581
		2582	//-GPL
		2583
		2584	void
		2585	object::force_set_timer (int duration)
		2586	{
		2587	this->duration = 1;
		2588	this->speed_left = -1.f;
		2589
		2590	this->set_speed (duration ? 1.f / duration : 0.f);
		2591	}
		2592
		2593	object *
		2594	object::force_add (shstr_tmp name, int duration)
		2595	{
		2596	if (object *force = force_find (name))
		2597	force->destroy ();
		2598
		2599	object *force = get_archetype (FORCE_NAME);
		2600
		2601	force->slaying = name;
		2602	force->force_set_timer (duration);
		2603	force->flag [FLAG_APPLIED] = true;
		2604
		2605	return insert (force);
		2606	}
		2607
		2608	void
		2609	object::play_sound (faceidx sound) const
		2610	{
		2611	if (!sound)
		2612	return;
		2613
		2614	if (is_on_map ())
		2615	map->play_sound (sound, x, y);
		2616	else if (object *pl = in_player ())
		2617	pl->contr->play_sound (sound);
		2618	}
		2619
		2620	void
		2621	object::say_msg (const char *msg) const
		2622	{
		2623	if (is_on_map ())
		2624	map->say_msg (msg, x, y);
		2625	else if (object *pl = in_player ())
		2626	pl->contr->play_sound (sound);
		2627	}
		2628
		2629	void
		2630	object::make_noise ()
		2631	{
		2632	// we do not model noise in the map, so instead put
		2633	// a temporary light into the noise source
		2634	// could use the map instead, but that's less reliable for our
		2635	// goal, which is to make invisibility a bit harder to exploit
		2636
		2637	// currently only works sensibly for players
		2638	if (!is_player ())
		2639	return;
		2640
		2641	// find old force, or create new one
		2642	object *force = force_find (shstr_noise_force);
		2643
		2644	if (force)
		2645	force->speed_left = -1.f; // patch old speed up
		2646	else
2756		2647	{
2757	if (!add_key) {	2648	force = archetype::get (shstr_noise_force);
2758	return FALSE;	2649
2759	}	2650	force->slaying = shstr_noise_force;
2760	/* There isn't any good reason to store a null	2651	force->stats.food = 1;
2761	* value in the key/value list. If the archetype has	2652	force->speed_left = -1.f;
2762	* this key, then we should also have it, so shouldn't	2653
2763	* be here. If user wants to store empty strings,	2654	force->set_speed (1.f / 4.f);
2764	* should pass in ""	2655	force->flag [FLAG_IS_USED_UP] = true;
2765	*/	2656	force->flag [FLAG_APPLIED] = true;
2766	if (value == NULL) return TRUE;	2657
		2658	insert (force);
2767		2659	}
2768	field = (key_value *) malloc(sizeof(key_value));	2660	}
		2661
		2662	void object::change_move_type (MoveType mt)
		2663	{
		2664	if (move_type == mt)
		2665	return;
		2666
		2667	if (is_on_map ())
2769		2668	{
2770	field->key = add_refcount(canonical_key);	2669	// we are on the map, so handle move_on/off effects
2771	field->value = add_string(value);	2670	remove ();
2772	/* Usual prepend-addition. */	2671	move_type = mt;
2773	field->next = op->key_values;	2672	map->insert (this, x, y, this);
2774	op->key_values = field;
2775		2673	}
2776	return TRUE;	2674	else
		2675	move_type = mt;
2777	}	2676	}
2778		2677
2779	/*
2780	* Updates the key in op to value.
2781	*
2782	* If add_key is FALSE, this will only update existing keys,
2783	* and not add new ones.
2784	* In general, should be little reason FALSE is ever passed in for add_key
2785	*
2786	* Returns TRUE on success.
2787	*/
2788	int set_ob_key_value(object * op, const char * key, const char * value, int add_key) {
2789	const char * canonical_key = NULL;
2790	int floating_ref = FALSE;
2791	int ret;
2792
2793	/* HACK This mess is to make sure set_ob_value() passes a shared string
2794	* to get_ob_key_link(), without leaving a leaked refcount.
2795	*/
2796
2797	canonical_key = find_string(key);
2798	if (canonical_key == NULL) {
2799	canonical_key = add_string(key);
2800	floating_ref = TRUE;
2801	}
2802
2803	ret = set_ob_key_value_s(op, canonical_key, value, add_key);
2804
2805	if (floating_ref) {
2806	free_string(canonical_key);
2807	}
2808
2809	return ret;
2810	}

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