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Comparing deliantra/server/common/object.C (file contents):
Revision 1.26 by root, Mon Sep 11 11:46:52 2006 UTC vs.
Revision 1.353 by root, Fri Jan 27 22:00:39 2012 UTC

1
2	/*	1	/*
3	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
4	* "$Id: object.C,v 1.26 2006/09/11 11:46:52 root Exp $";	3	*
5	*/	4	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
6
7	/*
8	CrossFire, A Multiplayer game for X-windows
9
10	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001 Mark Wedel & Crossfire Development Team
11	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
12		7	*
13	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
14	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
15	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
16	(at your option) any later version.	11	* option) any later version.
17		12	*
18	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,
19	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21	GNU General Public License for more details.	16	* GNU General Public License for more details.
22		17	*
23	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
24	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
25	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
26		21	*
27	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>
28	*/	23	*/
29		24
30	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
31	sub/add_weight will transcend the environment updating the carrying
32	variable. */
33	#include <global.h>	25	#include <global.h>
34	#ifndef WIN32 /* ---win32 exclude headers */
35	# include <stdio.h>	26	#include <stdio.h>
36	# include <sys/types.h>	27	#include <sys/types.h>
37	# include <sys/uio.h>	28	#include <sys/uio.h>
38	#endif /* win32 */
39	#include <object.h>	29	#include <object.h>
40	#include <funcpoint.h>	30	#include <sproto.h>
41	#include <skills.h>
42	#include <loader.h>
43	int nrofallocobjects = 0;
44		31
45	object *objects; /* Pointer to the list of used objects */	32	#include <bitset>
46	object *active_objects; /* List of active objects that need to be processed */
47		33
48	short freearr_x[SIZEOFFREE] = { 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,	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	freelist_item *object::freelist;
		43	uint32_t object::object_count;
		44	uint32_t object::free_count;
		45	uint32_t object::create_count;
		46	uint32_t object::destroy_count;
		47
		48	//+GPL
		49
		50	short freearr_x[SIZEOFFREE] = {
		51	0,
		52	0, 1, 1, 1, 0, -1, -1, -1,
		53	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
49	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1	54	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
50	};	55	};
51	short freearr_y[SIZEOFFREE] = { 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,	56	short freearr_y[SIZEOFFREE] = {
		57	0,
		58	-1, -1, 0, 1, 1, 1, 0, -1,
		59	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
52	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3	60	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	};
54	int maxfree[SIZEOFFREE] = { 0, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45,
55	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
56	};	61	};
57	int freedir[SIZEOFFREE] = {	62	int freedir[SIZEOFFREE] = {
58	0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,	63	0,
		64	1, 2, 3, 4, 5, 6, 7, 8,
		65	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
59	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8	66	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
60	};	67	};
61		68
		69	static int maxfree[SIZEOFFREE] = {
		70	0,
		71	9, 10, 13, 14, 17, 18, 21, 22,
		72	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		73	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		74	};
		75
		76	const char *wall_suffix[16] = {
		77	"0",
		78	"1_3",
		79	"1_4",
		80	"2_1_2",
		81	"1_2",
		82	"2_2_4",
		83	"2_2_1",
		84	"3_1",
		85	"1_1",
		86	"2_2_3",
		87	"2_2_2",
		88	"3_3",
		89	"2_1_1",
		90	"3_4",
		91	"3_2",
		92	"4"
		93	};
		94
		95	static void
		96	write_uuid (uval64 skip, bool sync)
		97	{
		98	CALL_BEGIN (2);
		99	CALL_ARG_SV (newSVval64 (skip));
		100	CALL_ARG_SV (boolSV (sync));
		101	CALL_CALL ("cf::write_uuid", G_DISCARD);
		102	CALL_END;
		103	}
		104
		105	static void
		106	read_uuid ()
		107	{
		108	char filename[MAX_BUF];
		109
		110	sprintf (filename, "%s/uuid", settings.localdir);
		111
		112	seq_next_save = 0;
		113
		114	FILE *fp;
		115
		116	if (!(fp = fopen (filename, "r")))
		117	{
		118	if (errno == ENOENT)
		119	{
		120	LOG (llevInfo, "RESET uid to 1\n");
		121	UUID::cur.seq = 0;
		122	write_uuid (UUID_GAP, true);
		123	return;
		124	}
		125
		126	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		127	_exit (1);
		128	}
		129
		130	char buf [UUID::MAX_LEN];
		131	buf[0] = 0;
		132	fgets (buf, sizeof (buf), fp);
		133
		134	if (!UUID::cur.parse (buf))
		135	{
		136	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		137	_exit (1);
		138	}
		139
		140	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		141
		142	write_uuid (UUID_GAP, true);
		143	fclose (fp);
		144	}
		145
		146	UUID
		147	UUID::gen ()
		148	{
		149	UUID uid;
		150
		151	uid.seq = ++cur.seq;
		152
		153	if (expect_false (cur.seq >= seq_next_save))
		154	{
		155	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		156	write_uuid (UUID_GAP, false);
		157	}
		158
		159
		160	return uid;
		161	}
		162
		163	void
		164	UUID::init ()
		165	{
		166	read_uuid ();
		167	}
		168
		169	bool
		170	UUID::parse (const char *s)
		171	{
		172	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		173	return false;
		174
		175	seq = 0;
		176
		177	while (*s != '>')
		178	{
		179	if (*s < '0')
		180	return false;
		181
		182	// this gives nice branchless code with gcc
		183	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		184	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		185
		186	seq = (seq << 4) | digit;
		187
		188	++s;
		189	}
		190
		191	return true;
		192	}
		193
		194	char *
		195	UUID::append (char *buf) const
		196	{
		197	*buf++ = '<';
		198	*buf++ = '1';
		199	*buf++ = '.';
		200
		201	uint64_t seq = this->seq;
		202	const int bits = 64;
		203	char nz = 0;
		204	static const char tohex [] = "0123456789abcdef";
		205
		206	// assert (len >= 3 + bits / 4 + 1 + 1);
		207	for (int i = bits / 4; --i; )
		208	{
		209	uint8_t digit = seq >> (bits - 4);
		210
		211	*buf = tohex [digit];
		212	nz |= digit;
		213	buf += nz ? 1 : 0;
		214	seq <<= 4;
		215	}
		216
		217	// last digit is special - always emit
		218	uint8_t digit = seq >> (bits - 4);
		219	*buf++ = tohex [digit];
		220
		221	*buf++ = '>';
		222
		223	return buf;
		224	}
		225
		226	char *
		227	UUID::c_str () const
		228	{
		229	static char buf [MAX_LEN];
		230	*append (buf) = 0;
		231	return buf;
		232	}
		233
62	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	234	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
63	static int	235	static bool
64	compare_ob_value_lists_one (const object *wants, const object *has)	236	compare_ob_value_lists_one (const object *wants, const object *has)
65	{	237	{
66	key_value *wants_field;
67
68	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	238	/* n-squared behaviour (see kv.get), but I'm hoping both
69	* objects with lists are rare, and lists stay short. If not, use a	239	* objects with lists are rare, and lists stay short. If not, use a
70	* different structure or at least keep the lists sorted...	240	* different structure or at least keep the lists sorted...
71	*/	241	*/
72		242
73	/* For each field in wants, */	243	/* For each field in wants, */
74	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next)	244	for (key_value *kv = wants->kv.first; kv; kv = kv->next)
75	{	245	if (has->kv.get (kv->key) != kv->value)
76	key_value *has_field;	246	return false;
77
78	/* Look for a field in has with the same key. */
79	has_field = get_ob_key_link (has, wants_field->key);
80
81	if (has_field == NULL)
82	{
83	/* No field with that name. */
84	return FALSE;
85	}
86
87	/* Found the matching field. */
88	if (has_field->value != wants_field->value)
89	{
90	/* Values don't match, so this half of the comparison is false. */
91	return FALSE;
92	}
93
94	/* If we get here, we found a match. Now for the next field in wants. */
95	}
96		247
97	/* If we get here, every field in wants has a matching field in has. */	248	/* If we get here, every field in wants has a matching field in has. */
98	return TRUE;	249	return true;
99	}	250	}
100		251
101	/* Returns TRUE if ob1 has the same key_values as ob2. */	252	/* Returns TRUE if ob1 has the same key_values as ob2. */
102	static int	253	static bool
103	compare_ob_value_lists (const object *ob1, const object *ob2)	254	compare_ob_value_lists (const object *ob1, const object *ob2)
104	{	255	{
105	/* However, there may be fields in has which aren't partnered in wants,	256	/* However, there may be fields in has which aren't partnered in wants,
106	* so we need to run the comparison *twice*. :(	257	* so we need to run the comparison *twice*. :(
107	*/	258	*/
108	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);	259	return compare_ob_value_lists_one (ob1, ob2)
		260	&& compare_ob_value_lists_one (ob2, ob1);
109	}	261	}
110		262
111	/* Function examines the 2 objects given to it, and returns true if	263	/* Function examines the 2 objects given to it, and returns true if
112	* they can be merged together.	264	* they can be merged together.
113	*	265	*
114	* Note that this function appears a lot longer than the macro it	266	* Note that this function appears a lot longer than the macro it
115	* replaces - this is mostly for clarity - a decent compiler should hopefully	267	* replaces - this is mostly for clarity - a decent compiler should hopefully
116	* reduce this to the same efficiency.	268	* reduce this to the same efficiency.
117	*	269	*
118	* Check nrof variable *before* calling CAN_MERGE()	270	* Check nrof variable *before* calling can_merge()
119	*	271	*
120	* Improvements made with merge: Better checking on potion, and also	272	* Improvements made with merge: Better checking on potion, and also
121	* check weight	273	* check weight
122	*/	274	*/
123
124	bool object::can_merge (object *ob1, object *ob2)	275	bool object::can_merge_slow (object *ob1, object *ob2)
125	{	276	{
126	/* A couple quicksanity checks */	277	/* A couple quick sanity checks */
127	if ((ob1 == ob2) || (ob1->type != ob2->type))	278	if (ob1 == ob2
		279	|| ob1->type != ob2->type
		280	|| ob1->value != ob2->value
		281	|| ob1->name != ob2->name
		282	|| ob1->custom_name != ob2->custom_name
		283	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
128	return 0;	284	return 0;
129		285
130	if (ob1->speed != ob2->speed)	286	/* Do not merge objects if nrof would overflow, assume nrof
		287	* is always 0 .. 2**31-1 */
		288	if (ob1->nrof > 0x7fffffff - ob2->nrof)
131	return 0;	289	return 0;
132		290
133	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
134	* value could not be stored in a sint32 (which unfortunately sometimes is
135	* used to store nrof).
136	*/
137	if (ob1->nrof + ob2->nrof >= 1UL << 31)
138	return 0;
139
140	/* If the objects have been identified, set the BEEN_APPLIED flag.	291	/* If the objects have been identified, set the BEEN_APPLIED flag.
141	* This is to the comparison of the flags below will be OK. We	292	* This is to the comparison of the flags below will be OK. We
142	* just can't ignore the been applied or identified flags, as they	293	* just can't ignore the been applied or identified flags, as they
143	* are not equal - just if it has been identified, the been_applied	294	* are not equal - just if it has been identified, the been_applied
144	* flags lose any meaning.	295	* flags lose any meaning.
145	*/	296	*/
146	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	297	if (ob1->flag [FLAG_IDENTIFIED])
147	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	298	ob1->set_flag (FLAG_BEEN_APPLIED);
148		299
149	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	300	if (ob2->flag [FLAG_IDENTIFIED])
150	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	301	ob2->set_flag (FLAG_BEEN_APPLIED);
151		302
152		303	if (ob1->arch->archname != ob2->arch->archname
153	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
154	* being locked in inventory should prevent merging.
155	* 0x4 in flags3 is CLIENT_SENT
156	*/
157	if ((ob1->arch != ob2->arch) ||
158	(ob1->flags[0] != ob2->flags[0]) ||
159	(ob1->flags[1] != ob2->flags[1]) ||
160	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
161	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
162	(ob1->name != ob2->name) ||	304	|| ob1->name != ob2->name
163	(ob1->title != ob2->title) ||	305	|| ob1->title != ob2->title
164	(ob1->msg != ob2->msg) ||	306	|| ob1->msg != ob2->msg
165	(ob1->weight != ob2->weight) ||	307	|| ob1->weight != ob2->weight
166	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||
167	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||
168	(ob1->attacktype != ob2->attacktype) ||	308	|| ob1->attacktype != ob2->attacktype
169	(ob1->magic != ob2->magic) ||	309	|| ob1->magic != ob2->magic
170	(ob1->slaying != ob2->slaying) ||	310	|| ob1->slaying != ob2->slaying
171	(ob1->skill != ob2->skill) ||	311	|| ob1->skill != ob2->skill
172	(ob1->value != ob2->value) ||	312	|| ob1->value != ob2->value
173	(ob1->animation_id != ob2->animation_id) ||	313	|| ob1->animation_id != ob2->animation_id
		314	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
174	(ob1->client_type != ob2->client_type) ||	315	|| ob1->client_type != ob2->client_type
175	(ob1->materialname != ob2->materialname) ||	316	|| ob1->material != ob2->material
176	(ob1->lore != ob2->lore) ||	317	|| ob1->lore != ob2->lore
177	(ob1->subtype != ob2->subtype) ||	318	|| ob1->subtype != ob2->subtype
178	(ob1->move_type != ob2->move_type) ||	319	|| ob1->move_type != ob2->move_type
179	(ob1->move_block != ob2->move_block) ||	320	|| ob1->move_block != ob2->move_block
180	(ob1->move_allow != ob2->move_allow) ||	321	|| ob1->move_allow != ob2->move_allow
181	(ob1->move_on != ob2->move_on) ||	322	|| ob1->move_on != ob2->move_on
182	(ob1->move_off != ob2->move_off) || (ob1->move_slow != ob2->move_slow) || (ob1->move_slow_penalty != ob2->move_slow_penalty))	323	|| ob1->move_off != ob2->move_off
		324	|| ob1->move_slow != ob2->move_slow
		325	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		326	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		327	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
183	return 0;	328	return 0;
184		329
		330	if ((ob1->flag ^ ob2->flag)
		331	.reset (FLAG_INV_LOCKED)
		332	.reset (FLAG_REMOVED)
		333	.any ())
		334	return 0;
		335
185	/* This is really a spellbook check - really, we should	336	/* This is really a spellbook check - we should in general
186	* check all objects in the inventory.	337	* not merge objects with real inventories, as splitting them
		338	* is hard.
187	*/	339	*/
188	if (ob1->inv || ob2->inv)	340	if (ob1->inv || ob2->inv)
189	{	341	{
190	/* if one object has inventory but the other doesn't, not equiv */
191	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
192	return 0;
193
194	/* Now check to see if the two inventory objects could merge */
195	if (!CAN_MERGE (ob1->inv, ob2->inv))	342	if (!(ob1->inv && ob2->inv))
196	return 0;	343	return 0; /* inventories differ in length */
		344
		345	if (ob1->inv->below || ob2->inv->below)
		346	return 0; /* more than one object in inv */
		347
		348	if (!object::can_merge (ob1->inv, ob2->inv))
		349	return 0; /* inventory objects differ */
197		350
198	/* inventory ok - still need to check rest of this object to see	351	/* inventory ok - still need to check rest of this object to see
199	* if it is valid.	352	* if it is valid.
200	*/	353	*/
201	}	354	}
202		355
203	/* Don't merge objects that are applied. With the new 'body' code,	356	/* Don't merge objects that are applied. With the new 'body' code,
204	* it is possible for most any character to have more than one of	357	* it is possible for most any character to have more than one of
205	* some items equipped, and we don't want those to merge.	358	* some items equipped, and we don't want those to merge.
206	*/	359	*/
207	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))	360	if (ob1->flag [FLAG_APPLIED] || ob2->flag [FLAG_APPLIED])
208	return 0;	361	return 0;
209		362
210	/* Note sure why the following is the case - either the object has to	363	/* Note sure why the following is the case - either the object has to
211	* be animated or have a very low speed. Is this an attempted monster	364	* be animated or have a very low speed. Is this an attempted monster
212	* check?	365	* check?
213	*/	366	*/
214	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)	367	if (!ob1->flag [FLAG_ANIMATE] && ob1->has_active_speed ())
215	return 0;	368	return 0;
216		369
217	switch (ob1->type)	370	switch (ob1->type)
218	{	371	{
219	case SCROLL:	372	case SCROLL:
220	if (ob1->level != ob2->level)	373	if (ob1->level != ob2->level)
221	return 0;	374	return 0;
222	break;	375	break;
223	}	376	}
224		377
225	if (ob1->key_values != NULL || ob2->key_values != NULL)	378	if (!ob1->kv.empty () || !ob2->kv.empty ())
226	{	379	{
227	/* At least one of these has key_values. */	380	/* At least one of these has key_values. */
228	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	381	if (ob1->kv.empty () != ob2->kv.empty ())
229	/* One has fields, but the other one doesn't. */	382	return 0; /* One has fields, but the other one doesn't. */
		383
		384	if (!compare_ob_value_lists (ob1, ob2))
230	return 0;	385	return 0;
231	else if (!compare_ob_value_lists (ob1, ob2))
232	return 0;
233	}	386	}
234		387
235	//TODO: generate an event or call into perl for additional checks
236	if (ob1->self || ob2->self)	388	if (ob1->self || ob2->self)
237	{	389	{
238	ob1->optimise ();	390	ob1->optimise ();
239	ob2->optimise ();	391	ob2->optimise ();
240		392
241	if (ob1->self || ob2->self)	393	if (ob1->self || ob2->self)
		394	{
		395	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		396	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		397
		398	if (k1 != k2)
242	return 0;	399	return 0;
		400
		401	if (k1 == 0)
		402	return 1;
		403
		404	if (!cfperl_can_merge (ob1, ob2))
		405	return 0;
		406	}
243	}	407	}
244		408
245	/* Everything passes, must be OK. */	409	/* Everything passes, must be OK. */
246	return 1;	410	return 1;
247	}	411	}
248		412
		413	// find player who can see this object
		414	object *
		415	object::visible_to () const
		416	{
		417	if (client_visible () && !flag [FLAG_REMOVED])
		418	{
		419	// see if we are in a container of sorts
		420	if (env)
		421	{
		422	// the player inventory itself is always visible
		423	if (env->is_player ())
		424	return env;
		425
		426	// else a player could have our env open
		427	object *envest = env->outer_env_or_self ();
		428
		429	// the player itself is always on a map, so we will find him here
		430	// even if our inv is in a player.
		431	if (envest->is_on_map ())
		432	if (object *pl = envest->ms ().player ())
		433	if (pl->container_ () == env)
		434	return pl;
		435	}
		436	else
		437	{
		438	// maybe there is a player standing on the same mapspace
		439	// this will catch the case where "this" is a player
		440	if (object *pl = ms ().player ())
		441	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		442	|| pl->container_ () == this)
		443	return pl;
		444	}
		445	}
		446
		447	return 0;
		448	}
		449
		450	// adjust weight per container type ("of holding")
		451	static uint32
		452	weight_adjust_for (object *op, uint32 weight)
		453	{
		454	return op->type == CONTAINER
		455	? weight - weight * op->stats.Str / 100
		456	: weight;
		457	}
		458
249	/*	459	/*
		460	* subtracts, then adds, the specified weight to an object,
		461	* and also updates how much the environment(s) is/are carrying.
		462	*/
		463	static void
		464	adjust_weight (object *op, sint32 sub, sint32 add)
		465	{
		466	while (op)
		467	{
		468	sint32 ocarrying = op->carrying;
		469
		470	op->carrying -= weight_adjust_for (op, sub);
		471	op->carrying += weight_adjust_for (op, add);
		472
		473	if (object *pl = op->visible_to ())
		474	if (pl != op) // player is handled lazily
		475	esrv_update_item (UPD_WEIGHT, pl, op);
		476
		477	sub = ocarrying;
		478	add = op->carrying;
		479
		480	op = op->env;
		481	}
		482	}
		483
		484	/*
250	* sum_weight() is a recursive function which calculates the weight	485	* this is a recursive function which calculates the weight
251	* an object is carrying. It goes through in figures out how much	486	* an object is carrying. It goes through op and figures out how much
252	* containers are carrying, and sums it up.	487	* containers are carrying, and sums it up.
253	*/	488	*/
254	signed long	489	void
255	sum_weight (object *op)	490	object::update_weight ()
256	{	491	{
257	signed long sum;	492	sint32 sum = 0;
258	object *inv;
259		493
260	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)	494	for (object *op = inv; op; op = op->below)
261	{
262	if (inv->inv)
263	sum_weight (inv);
264	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
265	}	495	{
266	if (op->type == CONTAINER && op->stats.Str)	496	op->update_weight ();
267	sum = (sum * (100 - op->stats.Str)) / 100;	497
268	if (op->carrying != sum)	498	sum += weight_adjust_for (this, op->total_weight ());
		499	}
		500
		501	if (sum != carrying)
		502	{
		503	if (carrying != sum && carrying)//D
		504	LOG (llevDebug, "updating carrying got %ld, expected %ld (%s)\n",
		505	(long long)sum, (long long)carrying, debug_desc ());
		506
269	op->carrying = sum;	507	carrying = sum;
270	return sum;
271	}
272		508
273	/**	509	if (object *pl = visible_to ())
274	* Return the outermost environment object for a given object.	510	if (pl != this) // player is handled lazily
275	*/	511	esrv_update_item (UPD_WEIGHT, pl, this);
276
277	object *
278	object_get_env_recursive (object *op)
279	{
280	while (op->env != NULL)
281	op = op->env;
282	return op;
283	}
284
285	/*
286	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
287	* a better check. We basically keeping traversing up until we can't
288	* or find a player.
289	*/
290
291	object *
292	is_player_inv (object *op)
293	{
294	for (; op != NULL && op->type != PLAYER; op = op->env)
295	if (op->env == op)
296	op->env = NULL;
297	return op;
298	}
299
300	/*
301	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
302	* Some error messages.
303	* The result of the dump is stored in the static global errmsg array.
304	*/
305
306	void
307	dump_object2 (object *op)
308	{
309	errmsg[0] = 0;
310	return;
311	//TODO//D#d#
312	#if 0
313	char *cp;
314
315	/* object *tmp;*/
316
317	if (op->arch != NULL)
318	{	512	}
319	strcat (errmsg, "arch ");
320	strcat (errmsg, op->arch->name ? op->arch->name : "(null)");
321	strcat (errmsg, "\n");
322	if ((cp = get_ob_diff (op, &empty_archetype->clone)) != NULL)
323	strcat (errmsg, cp);
324	# if 0
325	/* Don't dump player diffs - they are too long, mostly meaningless, and
326	* will overflow the buffer.
327	* Changed so that we don't dump inventory either. This may
328	* also overflow the buffer.
329	*/
330	if (op->type != PLAYER && (cp = get_ob_diff (op, &empty_archetype->clone)) != NULL)
331	strcat (errmsg, cp);
332	for (tmp = op->inv; tmp; tmp = tmp->below)
333	dump_object2 (tmp);
334	# endif
335	strcat (errmsg, "end\n");
336	}
337	else
338	{
339	strcat (errmsg, "Object ");
340	if (op->name == NULL)
341	strcat (errmsg, "(null)");
342	else
343	strcat (errmsg, op->name);
344	strcat (errmsg, "\n");
345	# if 0
346	if ((cp = get_ob_diff (op, &empty_archetype->clone)) != NULL)
347	strcat (errmsg, cp);
348	for (tmp = op->inv; tmp; tmp = tmp->below)
349	dump_object2 (tmp);
350	# endif
351	strcat (errmsg, "end\n");
352	}
353	#endif
354	}	513	}
355		514
356	/*	515	/*
357	* Dumps an object. Returns output in the static global errmsg array.	516	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
358	*/	517	*/
359		518	char *
360	void
361	dump_object (object *op)	519	dump_object (object *op)
362	{	520	{
363	if (op == NULL)	521	if (!op)
364	{	522	return strdup ("[NULLOBJ]");
365	strcpy (errmsg, "[NULL pointer]");
366	return;
367	}
368	errmsg[0] = '\0';
369	dump_object2 (op);
370	}
371		523
372	void	524	object_freezer freezer;
373	dump_all_objects (void)	525	op->write (freezer);
374	{	526	return freezer.as_string ();
375	object *op;
376
377	for (op = objects; op != NULL; op = op->next)
378	{
379	dump_object (op);
380	fprintf (logfile, "Object %d\n:%s\n", op->count, errmsg);
381	}
382	}	527	}
383		528
384	/*	529	char *
385	* get_nearest_part(multi-object, object 2) returns the part of the	530	object::as_string ()
386	* multi-object 1 which is closest to the second object.
387	* If it's not a multi-object, it is returned.
388	*/
389
390	object *
391	get_nearest_part (object *op, const object *pl)
392	{	531	{
393	object *tmp, *closest;	532	return dump_object (this);
394	int last_dist, i;
395
396	if (op->more == NULL)
397	return op;
398	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
399	if ((i = distance (tmp, pl)) < last_dist)
400	closest = tmp, last_dist = i;
401	return closest;
402	}	533	}
403		534
404	/*	535	/*
405	* Returns the object which has the count-variable equal to the argument.	536	* Returns the object which has the count-variable equal to the argument.
		537	* VERRRY slow.
406	*/	538	*/
407
408	object *	539	object *
409	find_object (tag_t i)	540	find_object (tag_t i)
410	{	541	{
411	object *op;	542	for_all_objects (op)
412
413	for (op = objects; op != NULL; op = op->next)
414	if (op->count == i)	543	if (op->count == i)
415	break;
416	return op;	544	return op;
		545
		546	return 0;
		547	}
		548
		549	/*
		550	* Returns the object which has the uuid equal to the argument.
		551	* MOAR VERRRY slow.
		552	*/
		553
		554	object *
		555	find_object_uuid (UUID i)
		556	{
		557	for_all_objects (op)
		558	if (op->uuid == i)
		559	return op;
		560
		561	return 0;
417	}	562	}
418		563
419	/*	564	/*
420	* Returns the first object which has a name equal to the argument.	565	* Returns the first object which has a name equal to the argument.
421	* Used only by the patch command, but not all that useful.	566	* Used only by the patch command, but not all that useful.
422	* Enables features like "patch <name-of-other-player> food 999"	567	* Enables features like "patch <name-of-other-player> food 999"
423	*/	568	*/
424
425	object *	569	object *
426	find_object_name (const char *str)	570	find_object_name (const char *str)
427	{	571	{
428	const char *name = shstr::find (str);	572	shstr_cmp str_ (str);
429	object *op;
430		573
431	for (op = objects; op != NULL; op = op->next)	574	if (str_)
		575	for_all_objects (op)
432	if (&op->name == name)	576	if (op->name == str_)
433	break;	577	return op;
434		578
435	return op;	579	return 0;
436	}
437
438	void
439	free_all_object_data ()
440	{
441	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
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 *
456	get_owner (object *op)
457	{
458	if (op->owner == NULL)
459	return NULL;
460
461	if (!QUERY_FLAG (op->owner, FLAG_FREED) && !QUERY_FLAG (op->owner, FLAG_REMOVED) && op->owner->count == op->ownercount)
462	return op->owner;
463
464	op->owner = NULL;
465	op->ownercount = 0;
466	return NULL;
467	}
468
469	void
470	clear_owner (object *op)
471	{
472	if (!op)
473	return;
474
475	if (op->owner && op->ownercount == op->owner->count)
476	op->owner->refcount--;
477
478	op->owner = NULL;
479	op->ownercount = 0;
480	}	580	}
481		581
482	/*	582	/*
483	* Sets the owner and sets the skill and exp pointers to owner's current	583	* Sets the owner and sets the skill and exp pointers to owner's current
484	* skill and experience objects.	584	* skill and experience objects.
485	*/	585	* ACTUALLY NO! investigate! TODO
486	void
487	set_owner (object *op, object *owner)
488	{
489	if (owner == NULL || op == NULL)
490	return;
491
492	/* next line added to allow objects which own objects */
493	/* Add a check for ownercounts in here, as I got into an endless loop
494	* with the fireball owning a poison cloud which then owned the
495	* fireball. I believe that was caused by one of the objects getting
496	* freed and then another object replacing it. Since the ownercounts
497	* didn't match, this check is valid and I believe that cause is valid.
498	*/	586	*/
499	while (owner->owner && owner != owner->owner && owner->ownercount == owner->owner->count)	587	void
		588	object::set_owner (object *owner)
		589	{
		590	// allow objects which own objects
		591	if (owner)
		592	while (owner->owner)
500	owner = owner->owner;	593	owner = owner->owner;
501		594
502	/* IF the owner still has an owner, we did not resolve to a final owner.	595	if (flag [FLAG_FREED])
503	* so lets not add to that.
504	*/
505	if (owner->owner)
506	return;
507
508	op->owner = owner;
509
510	op->ownercount = owner->count;
511	owner->refcount++;
512	}
513
514	/* Set the owner to clone's current owner and set the skill and experience
515	* objects to clone's objects (typically those objects that where the owner's
516	* current skill and experience objects at the time when clone's owner was
517	* set - not the owner's current skill and experience objects).
518	*
519	* Use this function if player created an object (e.g. fire bullet, swarm
520	* spell), and this object creates further objects whose kills should be
521	* accounted for the player's original skill, even if player has changed
522	* skills meanwhile.
523	*/
524	void
525	copy_owner (object *op, object *clone)
526	{
527	object *owner = get_owner (clone);
528
529	if (owner == NULL)
530	{	596	{
531	/* players don't have owners - they own themselves. Update	597	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
532	* as appropriate.
533	*/
534	if (clone->type == PLAYER)
535	owner = clone;
536	else
537	return;	598	return;
538	}
539
540	set_owner (op, owner);
541	}
542
543	/* Zero the key_values on op, decrementing the shared-string
544	* refcounts and freeing the links.
545	*/
546	static void
547	free_key_values (object *op)
548	{
549	for (key_value *i = op->key_values; i != 0;)
550	{	599	}
551	key_value *next = i->next;
552	delete i;
553		600
554	i = next;	601	this->owner = owner;
555	}
556
557	op->key_values = 0;
558	}	602	}
559		603
560	void object::clear ()
561	{
562	attachable_base::clear ();
563
564	free_key_values (this);
565
566	clear_owner (this);
567
568	name = 0;
569	name_pl = 0;
570	title = 0;
571	race = 0;
572	slaying = 0;
573	skill = 0;
574	msg = 0;
575	lore = 0;
576	custom_name = 0;
577	materialname = 0;
578
579	memset (static_cast < object_pod * >(this), 0, sizeof (object_pod));
580
581	SET_FLAG (this, FLAG_REMOVED);
582	}
583
584	void object::clone (object *destination)
585	{
586	*(object_copy *) destination = *this;
587	*(object_pod *) destination = *this;
588
589	if (self || cb)
590	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
591	}
592
593	/*	604	/*
594	* clear_object() frees everything allocated by an object, and also
595	* clears all variables and flags to default settings.
596	*/
597
598	void
599	clear_object (object *op)
600	{
601	op->clear ();
602
603	op->contr = NULL;
604	op->below = NULL;
605	op->above = NULL;
606	op->inv = NULL;
607	op->container = NULL;
608	op->env = NULL;
609	op->more = NULL;
610	op->head = NULL;
611	op->map = NULL;
612	op->refcount = 0;
613	op->active_next = NULL;
614	op->active_prev = NULL;
615	/* What is not cleared is next, prev, and count */
616
617	op->expmul = 1.0;
618	op->face = blank_face;
619	op->attacked_by_count = -1;
620
621	if (settings.casting_time)
622	op->casting_time = -1;
623	}
624
625	/*
626	* copy object first frees everything allocated by the second object,	605	* copy_to first frees everything allocated by the dst object,
627	* and then copies the contends of the first object into the second	606	* and then copies the contents of itself into the second
628	* object, allocating what needs to be allocated. Basically, any	607	* object, allocating what needs to be allocated. Basically, any
629	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	608	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
630	* if the first object is freed, the pointers in the new object	609	* if the first object is freed, the pointers in the new object
631	* will point at garbage.	610	* will point at garbage.
632	*/	611	*/
633
634	void	612	void
635	copy_object (object *op2, object *op)	613	object::copy_to (object *dst)
636	{	614	{
637	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	615	dst->remove ();
638	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	616	*(object_copy *)dst = *this;
639		617
640	op2->clone (op);	618	// maybe move to object_copy?
		619	dst->kv = kv;
641		620
642	if (is_freed)	621	dst->flag [FLAG_REMOVED] = true;
643	SET_FLAG (op, FLAG_FREED);	622	dst->activate ();
644	if (is_removed)	623	}
645	SET_FLAG (op, FLAG_REMOVED);
646		624
647	if (op2->speed < 0)	625	void
648	op->speed_left = op2->speed_left - RANDOM () % 200 / 100.0;	626	object::instantiate ()
		627	{
		628	if (!uuid.seq) // HACK
		629	uuid = UUID::gen ();
649		630
650	/* Copy over key_values, if any. */	631	// TODO: unclean state changes, should not be done in copy_to AND instantiate
651	if (op2->key_values)	632	if (flag [FLAG_RANDOM_SPEED] && speed)
652	{	633	speed_left = - speed - rndm (); // TODO animation
653	key_value *tail = 0;	634	else
654	key_value *i;	635	speed_left = -1.;
655		636
656	op->key_values = 0;	637	/* copy the body_info to the body_used - this is only really
		638	* need for monsters, but doesn't hurt to do it for everything.
		639	* by doing so, when a monster is created, it has good starting
		640	* values for the body_used info, so when items are created
		641	* for it, they can be properly equipped.
		642	*/
		643	for (int i = NUM_BODY_LOCATIONS; i--; )
		644	slot[i].used = slot[i].info;
657		645
658	for (i = op2->key_values; i; i = i->next)	646	attachable::instantiate ();
659	{	647	}
660	key_value *new_link = new key_value;
661		648
662	new_link->next = 0;	649	object *
663	new_link->key = i->key;	650	object::clone ()
664	new_link->value = i->value;	651	{
		652	object *neu = create ();
		653	copy_to (neu);
665		654
666	/* Try and be clever here, too. */	655	// TODO: unclean state changes, should not be done in clone AND instantiate
667	if (!op->key_values)	656	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
668	{	657	neu->speed_left = - neu->speed - rndm (); // TODO animation
669	op->key_values = new_link;
670	tail = new_link;
671	}
672	else
673	{
674	tail->next = new_link;
675	tail = new_link;
676	}
677	}
678	}
679		658
680	update_ob_speed (op);	659	neu->map = map; // not copied by copy_to
		660	return neu;
681	}	661	}
682		662
683	/*	663	/*
684	* If an object with the IS_TURNABLE() flag needs to be turned due	664	* If an object with the IS_TURNABLE() flag needs to be turned due
685	* to the closest player being on the other side, this function can	665	* to the closest player being on the other side, this function can
686	* be called to update the face variable, _and_ how it looks on the map.	666	* be called to update the face variable, _and_ how it looks on the map.
687	*/	667	*/
688
689	void	668	void
690	update_turn_face (object *op)	669	update_turn_face (object *op)
691	{	670	{
692	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || op->arch == NULL)	671	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
693	return;	672	return;
		673
694	SET_ANIMATION (op, op->direction);	674	SET_ANIMATION (op, op->direction);
695	update_object (op, UP_OBJ_FACE);	675	update_object (op, UP_OBJ_FACE);
696	}	676	}
697		677
698	/*	678	/*
699	* Updates the speed of an object. If the speed changes from 0 to another	679	* Updates the speed of an object. If the speed changes from 0 to another
700	* value, or vice versa, then add/remove the object from the active list.	680	* value, or vice versa, then add/remove the object from the active list.
701	* This function needs to be called whenever the speed of an object changes.	681	* This function needs to be called whenever the speed of an object changes.
702	*/	682	*/
703
704	void	683	void
705	update_ob_speed (object *op)	684	object::set_speed (float speed)
706	{	685	{
707	extern int arch_init;	686	this->speed = speed;
708		687
709	/* No reason putting the archetypes objects on the speed list,	688	if (has_active_speed ())
710	* since they never really need to be updated.	689	activate ();
711	*/
712
713	if (QUERY_FLAG (op, FLAG_FREED) && op->speed)
714	{
715	LOG (llevError, "Object %s is freed but has speed.\n", &op->name);
716	#ifdef MANY_CORES
717	abort ();
718	#else
719	op->speed = 0;
720	#endif
721	}
722	if (arch_init)
723	{
724	return;
725	}
726	if (FABS (op->speed) > MIN_ACTIVE_SPEED)
727	{
728	/* If already on active list, don't do anything */
729	if (op->active_next || op->active_prev || op == active_objects)
730	return;
731
732	/* process_events() expects us to insert the object at the beginning
733	* of the list. */
734	op->active_next = active_objects;
735	if (op->active_next != NULL)
736	op->active_next->active_prev = op;
737	active_objects = op;
738	}
739	else	690	else
740	{	691	deactivate ();
741	/* If not on the active list, nothing needs to be done */
742	if (!op->active_next && !op->active_prev && op != active_objects)
743	return;
744
745	if (op->active_prev == NULL)
746	{
747	active_objects = op->active_next;
748	if (op->active_next != NULL)
749	op->active_next->active_prev = NULL;
750	}
751	else
752	{
753	op->active_prev->active_next = op->active_next;
754	if (op->active_next)
755	op->active_next->active_prev = op->active_prev;
756	}
757	op->active_next = NULL;
758	op->active_prev = NULL;
759	}
760	}	692	}
761		693
762	/* This function removes object 'op' from the list of active
763	* objects.
764	* This should only be used for style maps or other such
765	* reference maps where you don't want an object that isn't
766	* in play chewing up cpu time getting processed.
767	* The reverse of this is to call update_ob_speed, which
768	* will do the right thing based on the speed of the object.
769	*/
770	void
771	remove_from_active_list (object *op)
772	{
773	/* If not on the active list, nothing needs to be done */
774	if (!op->active_next && !op->active_prev && op != active_objects)
775	return;
776
777	if (op->active_prev == NULL)
778	{
779	active_objects = op->active_next;
780	if (op->active_next != NULL)
781	op->active_next->active_prev = NULL;
782	}
783	else
784	{
785	op->active_prev->active_next = op->active_next;
786	if (op->active_next)
787	op->active_next->active_prev = op->active_prev;
788	}
789	op->active_next = NULL;
790	op->active_prev = NULL;
791	}
792
793	/*	694	/*
794	* update_object() updates the array which represents the map.	695	* update_object() updates the the map.
795	* It takes into account invisible objects (and represent squares covered	696	* It takes into account invisible objects (and represent squares covered
796	* by invisible objects by whatever is below them (unless it's another	697	* by invisible objects by whatever is below them (unless it's another
797	* invisible object, etc...)	698	* invisible object, etc...)
798	* If the object being updated is beneath a player, the look-window	699	* If the object being updated is beneath a player, the look-window
799	* of that player is updated (this might be a suboptimal way of	700	* of that player is updated (this might be a suboptimal way of
800	* updating that window, though, since update_object() is called _often_)	701	* updating that window, though, since update_object() is called _often_)
801	*	702	*
802	* action is a hint of what the caller believes need to be done.	703	* action is a hint of what the caller believes need to be done.
803	* For example, if the only thing that has changed is the face (due to
804	* an animation), we don't need to call update_position until that actually
805	* comes into view of a player. OTOH, many other things, like addition/removal
806	* of walls or living creatures may need us to update the flags now.
807	* current action are:	704	* current action are:
808	* UP_OBJ_INSERT: op was inserted	705	* UP_OBJ_INSERT: op was inserted
809	* UP_OBJ_REMOVE: op was removed	706	* UP_OBJ_REMOVE: op was removed
810	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	707	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
811	* as that is easier than trying to look at what may have changed.	708	* as that is easier than trying to look at what may have changed.
812	* UP_OBJ_FACE: only the objects face has changed.	709	* UP_OBJ_FACE: only the objects face has changed.
813	*/	710	*/
814
815	void	711	void
816	update_object (object *op, int action)	712	update_object (object *op, int action)
817	{	713	{
818	int update_now = 0, flags;	714	if (!op)
819	MoveType move_on, move_off, move_block, move_slow;
820
821	if (op == NULL)
822	{	715	{
823	/* this should never happen */	716	/* this should never happen */
824	LOG (llevDebug, "update_object() called for NULL object.\n");	717	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
825	return;	718	return;
826	}	719	}
827		720
828	if (op->env != NULL)	721	if (!op->is_on_map ())
829	{	722	{
830	/* Animation is currently handled by client, so nothing	723	/* Animation is currently handled by client, so nothing
831	* to do in this case.	724	* to do in this case.
832	*/	725	*/
833	return;	726	return;
834	}	727	}
835		728
836	/* If the map is saving, don't do anything as everything is
837	* going to get freed anyways.
838	*/
839	if (!op->map || op->map->in_memory == MAP_SAVING)
840	return;
841
842	/* make sure the object is within map boundaries */	729	/* make sure the object is within map boundaries */
843	if (op->x < 0 || op->x >= MAP_WIDTH (op->map) || op->y < 0 || op->y >= MAP_HEIGHT (op->map))	730	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
844	{	731	{
845	LOG (llevError, "update_object() called for object out of map!\n");	732	LOG (llevError, "update_object() called for object out of map!\n");
846	#ifdef MANY_CORES	733	#ifdef MANY_CORES
847	abort ();	734	abort ();
848	#endif	735	#endif
849	return;	736	return;
850	}	737	}
851		738
852	flags = GET_MAP_FLAGS (op->map, op->x, op->y);	739	mapspace &m = op->ms ();
853	SET_MAP_FLAGS (op->map, op->x, op->y, flags | P_NEED_UPDATE);
854	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
855	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
856	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
857	move_off = GET_MAP_MOVE_OFF (op->map, op->x, op->y);
858		740
		741	if (!(m.flags_ & P_UPTODATE))
		742	m.update_up (); // nothing to do except copy up
859	if (action == UP_OBJ_INSERT)	743	else if (action == UP_OBJ_INSERT)
860	{	744	{
		745	#if 0
		746	// this is likely overkill, TODO: revisit (schmorp)
861	if (QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	747	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
862	update_now = 1;	748	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
863		749	|| (op->is_player () && !(m.flags_ & P_PLAYER))
864	if (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))
865	update_now = 1;
866
867	if (QUERY_FLAG (op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))
868	update_now = 1;
869
870	if (QUERY_FLAG (op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
871	update_now = 1;
872
873	if (op->type == SAFE_GROUND && !(flags & P_SAFE))	750	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
874	update_now = 1;	751	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
875		752	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
876	if ((move_on | op->move_on) != move_on)	753	|| (m.move_on | op->move_on ) != m.move_on
877	update_now = 1;
878
879	if ((move_off | op->move_off) != move_off)	754	|| (m.move_off | op->move_off ) != m.move_off
880	update_now = 1;	755	|| (m.move_slow | op->move_slow) != m.move_slow
881
882	/* This isn't perfect, but I don't expect a lot of objects to	756	/* This isn't perfect, but I don't expect a lot of objects to
883	* to have move_allow right now.	757	* have move_allow right now.
884	*/	758	*/
885	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	759	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
886	update_now = 1;	760	m.invalidate ();
887		761	#else
888	if ((move_slow | op->move_slow) != move_slow)	762	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
889	update_now = 1;	763	m.invalidate ();
		764	#endif
890	}	765	}
891	/* if the object is being removed, we can't make intelligent	766	/* if the object is being removed, we can't make intelligent
892	* decisions, because remove_ob can't really pass the object	767	* decisions, because remove_ob can't really pass the object
893	* that is being removed.	768	* that is being removed.
		769	*/
		770	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
		771	m.invalidate ();
		772	else if (action == UP_OBJ_FACE)
		773	m.update_up (); // nothing to do for that case, except copy up
		774	else
		775	LOG (llevError, "update_object called with invalid action: %d\n", action);
		776
		777	if (op->more)
		778	update_object (op->more, action);
		779	}
		780
		781	object::object ()
		782	{
		783	this->set_flag (FLAG_REMOVED);
		784
		785	//expmul = 1.0; declared const for the time being
		786	face = blank_face;
		787	material = MATERIAL_NULL;
		788	}
		789
		790	object::~object ()
		791	{
		792	unlink ();
		793
		794	kv.clear ();
		795	}
		796
		797	void object::link ()
		798	{
		799	assert (!index);//D
		800	uuid = UUID::gen ();
		801
		802	refcnt_inc ();
		803	objects.insert (this);
		804
		805	++create_count;
		806
		807	}
		808
		809	void object::unlink ()
		810	{
		811	if (!index)
		812	return;
		813
		814	++destroy_count;
		815
		816	objects.erase (this);
		817	refcnt_dec ();
		818	}
		819
		820	void
		821	object::activate ()
		822	{
		823	/* If already on active list, don't do anything */
		824	if (active)
		825	return;
		826
		827	if (has_active_speed ())
		828	{
		829	if (flag [FLAG_FREED])
		830	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
		831
		832	actives.insert (this);
		833	}
		834	}
		835
		836	void
		837	object::activate_recursive ()
		838	{
		839	activate ();
		840
		841	for (object *op = inv; op; op = op->below)
		842	op->activate_recursive ();
		843	}
		844
		845	/* This function removes object 'op' from the list of active
		846	* objects.
		847	* This should only be used for style maps or other such
		848	* reference maps where you don't want an object that isn't
		849	* in play chewing up cpu time getting processed.
		850	* The reverse of this is to call update_ob_speed, which
		851	* will do the right thing based on the speed of the object.
		852	*/
		853	void
		854	object::deactivate ()
		855	{
		856	/* If not on the active list, nothing needs to be done */
		857	if (!active)
		858	return;
		859
		860	actives.erase (this);
		861	}
		862
		863	void
		864	object::deactivate_recursive ()
		865	{
		866	for (object *op = inv; op; op = op->below)
		867	op->deactivate_recursive ();
		868
		869	deactivate ();
		870	}
		871
		872	void
		873	object::set_flag_inv (int flag, int value)
		874	{
		875	for (object *op = inv; op; op = op->below)
		876	{
		877	op->flag [flag] = value;
		878	op->set_flag_inv (flag, value);
		879	}
		880	}
		881
		882	/*
		883	* Remove and free all objects in the inventory of the given object.
		884	* object.c ?
		885	*/
		886	void
		887	object::destroy_inv (bool drop_to_ground)
		888	{
		889	// need to check first, because the checks below might segfault
		890	// as we might be on an invalid mapspace and crossfire code
		891	// is too buggy to ensure that the inventory is empty.
		892	// corollary: if you create arrows etc. with stuff in its inventory,
		893	// cf will crash below with off-map x and y
		894	if (!inv)
		895	return;
		896
		897	/* Only if the space blocks everything do we not process -
		898	* if some form of movement is allowed, let objects
		899	* drop on that space.
894	*/	900	*/
895	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)	901	if (!drop_to_ground
896	{	902	|| !map
897	update_now = 1;	903	|| !map->linkable ()
		904	|| map->no_drop
		905	|| ms ().move_block == MOVE_ALL)
898	}	906	{
899	else if (action == UP_OBJ_FACE)	907	while (inv)
900	{	908	inv->destroy ();
901	/* Nothing to do for that case */
902	}	909	}
903	else	910	else
904	{	911	{ /* Put objects in inventory onto this space */
905	LOG (llevError, "update_object called with invalid action: %d\n", action);	912	while (inv)
906	}
907
908	if (update_now)
909	{
910	SET_MAP_FLAGS (op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
911	update_position (op->map, op->x, op->y);
912	}
913
914	if (op->more != NULL)
915	update_object (op->more, action);
916	}
917
918	static unordered_vector<object *> mortals;
919	static std::vector<object *> freed;
920
921	void object::free_mortals ()
922	{
923	for (unordered_vector<object *>::iterator i = mortals.begin (); i != mortals.end (); )
924	if (!(*i)->refcount)
925	{	913	{
926	freed.push_back (*i);	914	object *op = inv;
927	mortals.erase (i);	915
		916	if (op->flag [FLAG_STARTEQUIP]
		917	|| op->flag [FLAG_NO_DROP]
		918	|| op->type == RUNE
		919	|| op->type == TRAP
		920	|| op->flag [FLAG_IS_A_TEMPLATE]
		921	|| op->flag [FLAG_DESTROY_ON_DEATH])
		922	op->destroy ();
		923	else
		924	map->insert (op, x, y);
928	}	925	}
929	else
930	++i;
931	}
932
933	object::object ()
934	{
935	SET_FLAG (this, FLAG_REMOVED);
936
937	expmul = 1.0;
938	face = blank_face;
939	attacked_by_count = -1;
940	}
941
942	object::~object ()
943	{
944	free_key_values (this);
945	}
946
947	void object::link ()
948	{
949	count = ++ob_count;
950
951	prev = 0;
952	next = objects;
953
954	if (objects)
955	objects->prev = this;
956
957	objects = this;
958	}
959
960	void object::unlink ()
961	{
962	count = 0;
963
964	/* Remove this object from the list of used objects */
965	if (prev)
966	{	926	}
967	prev->next = next;	927	}
		928
		929	/*
		930	* Remove and free all objects in the inventory of the given object.
		931	* Unlike destroy_inv, this assumes the *this is destroyed as well
		932	* well, so we can (and have to!) take shortcuts.
		933	*/
		934	void
		935	object::destroy_inv_fast ()
		936	{
		937	while (object *op = inv)
		938	{
		939	// remove from object the fast way
		940	op->flag [FLAG_REMOVED] = true;
968	prev = 0;	941	op->env = 0;
969	}	942	if ((inv = inv->below))
		943	inv->above = 0;
970		944
971	if (next)	945	// then destroy
		946	op->destroy ();
972	{	947	}
973	next->prev = prev;	948	}
974	next = 0;	949
		950	void
		951	object::freelist_free (int count)
		952	{
		953	while (count-- && freelist)
975	}	954	{
		955	freelist_item *next = freelist->next;
		956	// count is being "destroyed"
976		957
977	if (this == objects)	958	sfree ((char *)freelist, sizeof (object));
978	objects = next;
979	}
980		959
		960	freelist = next;
		961	--free_count;
		962	}
		963	}
		964
		965	object *
981	object *object::create ()	966	object::create ()
982	{	967	{
983	object *op;	968	object *op;
984		969
985	if (freed.empty ())	970	if (freelist)
		971	{
		972	freelist_item li = *freelist;
		973	memset (freelist, 0, sizeof (object));
		974
986	op = new object;	975	op = new (freelist) object;
		976	op->count = li.count;
		977
		978	freelist = li.next;
		979	--free_count;
		980	}
987	else	981	else
988	{	982	{
989	// highly annoying, but the only way to get it stable right now	983	void *ni = salloc0<char> (sizeof (object));
990	op = freed.back (); freed.pop_back ();	984
991	op->~object ();	985	op = new(ni) object;
992	new ((void *)op) object;	986
		987	op->count = ++object_count;
993	}	988	}
994		989
995	op->link ();	990	op->link ();
		991
996	return op;	992	return op;
997	}	993	}
998		994
999	/*	995	void
1000	* free_object() frees everything allocated by an object, removes	996	object::do_delete ()
1001	* it from the list of used objects, and puts it on the list of
1002	* free objects. The IS_FREED() flag is set in the object.
1003	* The object must have been removed by remove_ob() first for
1004	* this function to succeed.
1005	*
1006	* If free_inventory is set, free inventory as well. Else drop items in
1007	* inventory to the ground.
1008	*/
1009	void object::free (bool free_inventory)
1010	{	997	{
1011	if (!QUERY_FLAG (this, FLAG_REMOVED))	998	uint32_t count = this->count;
1012	{
1013	LOG (llevDebug, "Free object called with non removed object\n");
1014	dump_object (this);
1015	#ifdef MANY_CORES
1016	abort ();
1017	#endif
1018	}
1019		999
1020	if (QUERY_FLAG (this, FLAG_FRIENDLY))	1000	this->~object ();
1021	{	1001
1022	LOG (llevMonster, "Warning: tried to free friendly object.\n");	1002	freelist_item *li = (freelist_item *)this;
		1003	li->next = freelist;
		1004	li->count = count;
		1005
		1006	freelist = li;
		1007	++free_count;
		1008	}
		1009
		1010	void
		1011	object::do_destroy ()
		1012	{
		1013	if (flag [FLAG_IS_LINKED])
		1014	remove_link ();
		1015
		1016	if (flag [FLAG_FRIENDLY])
1023	remove_friendly_object (this);	1017	remove_friendly_object (this);
		1018
		1019	remove ();
		1020
		1021	attachable::do_destroy ();
		1022
		1023	deactivate ();
		1024	unlink ();
		1025
		1026	flag [FLAG_FREED] = 1;
		1027
		1028	// hack to ensure that freed objects still have a valid map
		1029	map = &freed_map;
		1030	x = 1;
		1031	y = 1;
		1032
		1033	if (more)
1024	}	1034	{
1025		1035	more->destroy ();
1026	if (QUERY_FLAG (this, FLAG_FREED))	1036	more = 0;
1027	{	1037	}
1028	dump_object (this);	1038
1029	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	1039	head = 0;
		1040
		1041	// clear those pointers that likely might cause circular references
		1042	owner = 0;
		1043	enemy = 0;
		1044	attacked_by = 0;
		1045	current_weapon = 0;
		1046	}
		1047
		1048	void
		1049	object::destroy ()
		1050	{
		1051	if (destroyed ())
		1052	return;
		1053
		1054	if (!is_head () && !head->destroyed ())
		1055	{
		1056	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1057	head->destroy ();
1030	return;	1058	return;
1031	}	1059	}
1032		1060
1033	if (more)	1061	destroy_inv_fast ();
1034	{
1035	more->free (free_inventory);
1036	more = 0;
1037	}
1038		1062
1039	if (inv)	1063	if (is_head ())
1040	{	1064	if (sound_destroy)
1041	/* Only if the space blocks everything do we not process -	1065	play_sound (sound_destroy);
1042	* if some form of movement is allowed, let objects	1066	else if (flag [FLAG_MONSTER])
1043	* drop on that space.	1067	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
1044	*/
1045	if (free_inventory || !map || map->in_memory != MAP_IN_MEMORY || (GET_MAP_MOVE_BLOCK (map, x, y) == MOVE_ALL))
1046	{
1047	object *
1048	op = inv;
1049		1068
1050	while (op)	1069	attachable::destroy ();
1051	{
1052	object *
1053	tmp = op->below;
1054
1055	remove_ob (op);
1056	op->free (free_inventory);
1057	op = tmp;
1058	}
1059	}
1060	else
1061	{ /* Put objects in inventory onto this space */
1062	object *
1063	op = inv;
1064
1065	while (op)
1066	{
1067	object *
1068	tmp = op->below;
1069
1070	remove_ob (op);
1071
1072	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
1073	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE || op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
1074	free_object (op);
1075	else
1076	{
1077	op->x = x;
1078	op->y = y;
1079	insert_ob_in_map (op, map, 0, 0); /* Insert in same map as the envir */
1080	}
1081
1082	op = tmp;
1083	}
1084	}
1085	}
1086
1087	clear_owner (this);
1088
1089	/* Remove object from the active list */
1090	speed = 0;
1091	update_ob_speed (this);
1092
1093	unlink ();
1094
1095	SET_FLAG (this, FLAG_FREED);
1096
1097	mortals.push_back (this);
1098	}	1070	}
1099		1071
1100	/*	1072	/* op->remove ():
1101	* sub_weight() recursively (outwards) subtracts a number from the
1102	* weight of an object (and what is carried by it's environment(s)).
1103	*/
1104
1105	void
1106	sub_weight (object *op, signed long weight)
1107	{
1108	while (op != NULL)
1109	{
1110	if (op->type == CONTAINER)
1111	{
1112	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1113	}
1114	op->carrying -= weight;
1115	op = op->env;
1116	}
1117	}
1118
1119	/* remove_ob(op):
1120	* This function removes the object op from the linked list of objects	1073	* This function removes the object op from the linked list of objects
1121	* which it is currently tied to. When this function is done, the	1074	* which it is currently tied to. When this function is done, the
1122	* object will have no environment. If the object previously had an	1075	* object will have no environment. If the object previously had an
1123	* environment, the x and y coordinates will be updated to	1076	* environment, the x and y coordinates will be updated to
1124	* the previous environment.	1077	* the previous environment.
1125	* Beware: This function is called from the editor as well!
1126	*/	1078	*/
1127
1128	void	1079	void
1129	remove_ob (object *op)	1080	object::do_remove ()
1130	{	1081	{
1131	object *tmp, *last = NULL;	1082	if (flag [FLAG_REMOVED])
1132	object *otmp;	1083	return;
1133		1084
1134	tag_t tag;	1085	INVOKE_OBJECT (REMOVE, this);
1135	int check_walk_off;
1136	mapstruct *m;
1137		1086
1138	sint16 x, y;	1087	flag [FLAG_REMOVED] = true;
1139		1088
1140	if (QUERY_FLAG (op, FLAG_REMOVED))	1089	if (more)
1141	{	1090	more->remove ();
1142	dump_object (op);
1143	LOG (llevError, "Trying to remove removed object.\n%s\n", errmsg);
1144
1145	/* Changed it to always dump core in this case. As has been learned
1146	* in the past, trying to recover from errors almost always
1147	* make things worse, and this is a real error here - something
1148	* that should not happen.
1149	* Yes, if this was a mission critical app, trying to do something
1150	* to recover may make sense, but that is because failure of the app
1151	* may have other disastrous problems. Cf runs out of a script
1152	* so is easily enough restarted without any real problems.
1153	* MSW 2001-07-01
1154	*/
1155	abort ();
1156	}
1157
1158	if (op->more != NULL)
1159	remove_ob (op->more);
1160
1161	SET_FLAG (op, FLAG_REMOVED);
1162		1091
1163	/*	1092	/*
1164	* In this case, the object to be removed is in someones	1093	* In this case, the object to be removed is in someones
1165	* inventory.	1094	* inventory.
1166	*/	1095	*/
1167	if (op->env != NULL)	1096	if (env)
1168	{	1097	{
1169	if (op->nrof)	1098	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1170	sub_weight (op->env, op->weight * op->nrof);	1099	if (object *pl = visible_to ())
1171	else	1100	esrv_del_item (pl->contr, count);
1172	sub_weight (op->env, op->weight + op->carrying);	1101	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1173		1102
1174	/* NO_FIX_PLAYER is set when a great many changes are being	1103	adjust_weight (env, total_weight (), 0);
1175	* made to players inventory. If set, avoiding the call
1176	* to save cpu time.
1177	*/
1178	if ((otmp = is_player_inv (op->env)) != NULL && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1179	fix_player (otmp);
1180		1104
1181	if (op->above != NULL)	1105	object *pl = in_player ();
1182	op->above->below = op->below;
1183	else
1184	op->env->inv = op->below;
1185
1186	if (op->below != NULL)
1187	op->below->above = op->above;
1188		1106
1189	/* we set up values so that it could be inserted into	1107	/* we set up values so that it could be inserted into
1190	* the map, but we don't actually do that - it is up	1108	* the map, but we don't actually do that - it is up
1191	* to the caller to decide what we want to do.	1109	* to the caller to decide what we want to do.
1192	*/	1110	*/
1193	op->x = op->env->x, op->y = op->env->y;
1194	op->map = op->env->map;	1111	map = env->map;
1195	op->above = NULL, op->below = NULL;	1112	x = env->x;
1196	op->env = NULL;	1113	y = env->y;
1197	return;
1198	}
1199		1114
1200	/* If we get here, we are removing it from a map */	1115	// make sure cmov optimisation is applicable
1201	if (op->map == NULL)	1116	*(above ? &above->below : &env->inv) = below;
1202	return;	1117	*(below ? &below->above : &above ) = above; // &above is just a dummy
1203		1118
1204	x = op->x;	1119	above = 0;
1205	y = op->y;	1120	below = 0;
1206	m = get_map_from_coord (op->map, &x, &y);	1121	env = 0;
1207		1122
1208	if (!m)	1123	if (pl && pl->is_player ())
1209	{
1210	LOG (llevError, "remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1211	op->map->path, op->x, op->y);
1212	/* in old days, we used to set x and y to 0 and continue.
1213	* it seems if we get into this case, something is probablye
1214	* screwed up and should be fixed.
1215	*/
1216	abort ();
1217	}
1218	if (op->map != m)
1219	{
1220	LOG (llevDebug, "remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1221	op->map->path, m->path, op->x, op->y, x, y);
1222	}
1223
1224	/* Re did the following section of code - it looks like it had
1225	* lots of logic for things we no longer care about
1226	*/
1227
1228	/* link the object above us */
1229	if (op->above)
1230	op->above->below = op->below;
1231	else
1232	SET_MAP_TOP (m, x, y, op->below); /* we were top, set new top */
1233
1234	/* Relink the object below us, if there is one */
1235	if (op->below)
1236	op->below->above = op->above;
1237	else
1238	{
1239	/* Nothing below, which means we need to relink map object for this space
1240	* use translated coordinates in case some oddness with map tiling is
1241	* evident
1242	*/
1243	if (GET_MAP_OB (m, x, y) != op)
1244	{	1124	{
1245	dump_object (op);	1125	if (expect_false (pl->contr->combat_ob == this))
1246	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",	1126	{
1247	errmsg);	1127	pl->apply (pl->contr->combat_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
1248	dump_object (GET_MAP_OB (m, x, y));	1128	pl->contr->combat_ob = 0;
1249	LOG (llevError, "%s\n", errmsg);	1129	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
		1130	}
		1131
		1132	if (expect_false (pl->contr->ranged_ob == this))
		1133	{
		1134	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1135	pl->contr->ranged_ob = 0;
		1136	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1137	}
		1138
		1139	pl->contr->queue_stats_update ();
		1140
		1141	if (expect_false (glow_radius) && pl->is_on_map ())
		1142	update_all_los (pl->map, pl->x, pl->y);
1250	}	1143	}
1251
1252	SET_MAP_OB (m, x, y, op->above); /* goes on above it. */
1253	}
1254
1255	op->above = NULL;
1256	op->below = NULL;
1257
1258	if (op->map->in_memory == MAP_SAVING)
1259	return;
1260
1261	tag = op->count;
1262	check_walk_off = !QUERY_FLAG (op, FLAG_NO_APPLY);
1263
1264	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1265	{	1144	}
1266	/* No point updating the players look faces if he is the object	1145	else if (map)
1267	* being removed.	1146	{
1268	*/	1147	map->dirty = true;
		1148	mapspace &ms = this->ms ();
1269		1149
1270	if (tmp->type == PLAYER && tmp != op)	1150	if (object *pl = ms.player ())
1271	{	1151	{
1272	/* If a container that the player is currently using somehow gets	1152	if (is_player ())
1273	* removed (most likely destroyed), update the player view
1274	* appropriately.
1275	*/
1276	if (tmp->container == op)
1277	{	1153	{
1278	CLEAR_FLAG (op, FLAG_APPLIED);	1154	if (!flag [FLAG_WIZPASS])
1279	tmp->container = NULL;	1155	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1156
		1157	// leaving a spot always closes any open container on the ground
		1158	if (container && !container->env)
		1159	// this causes spurious floorbox updates, but it ensures
		1160	// that the CLOSE event is being sent.
		1161	close_container ();
		1162
		1163	--map->players;
		1164	map->touch ();
1280	}	1165	}
1281		1166	else if (pl->container_ () == this)
1282	tmp->contr->socket.update_look = 1;	1167	{
		1168	// removing a container should close it
		1169	close_container ();
		1170	}
		1171	else
		1172	esrv_del_item (pl->contr, count);
1283	}	1173	}
1284	/* See if player moving off should effect something */	1174
1285	if (check_walk_off && ((op->move_type & tmp->move_off) && (op->move_type & ~tmp->move_off & ~tmp->move_block) == 0))	1175	/* link the object above us */
		1176	// re-link, make sure compiler can easily use cmove
		1177	*(above ? &above->below : &ms.top) = below;
		1178	*(below ? &below->above : &ms.bot) = above;
		1179
		1180	above = 0;
		1181	below = 0;
		1182
		1183	ms.invalidate ();
		1184
		1185	int check_walk_off = !flag [FLAG_NO_APPLY];
		1186
		1187	if (object *pl = ms.player ())
1286	{	1188	{
1287	move_apply (tmp, op, NULL);	1189	if (pl->container_ () == this)
1288		1190	/* If a container that the player is currently using somehow gets
1289	if (was_destroyed (op, tag))	1191	* removed (most likely destroyed), update the player view
		1192	* appropriately.
1290	{	1193	*/
1291	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed " "leaving object\n", &tmp->name, &tmp->arch->name);	1194	pl->close_container ();
1292	}	1195
		1196	//TODO: the floorbox prev/next might need updating
		1197	//esrv_del_item (pl->contr, count);
		1198	//TODO: update floorbox to preserve ordering
		1199	if (pl->contr->ns)
		1200	pl->contr->ns->floorbox_update ();
1293	}	1201	}
1294		1202
1295	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1203	if (check_walk_off)
		1204	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1205	{
		1206	above = tmp->above;
1296		1207
1297	if (tmp->above == tmp)	1208	/* No point updating the players look faces if he is the object
1298	tmp->above = NULL;	1209	* being removed.
		1210	*/
1299		1211
1300	last = tmp;	1212	/* See if object moving off should effect something */
1301	}	1213	if ((move_type & tmp->move_off)
		1214	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
		1215	move_apply (tmp, this, 0);
		1216	}
1302		1217
1303	/* last == NULL of there are no objects on this space */	1218	if (affects_los ())
1304	if (last == NULL)	1219	update_all_los (map, x, y);
1305	{	1220	}
1306	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1307	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1308	* those out anyways, and if there are any flags set right now, they won't
1309	* be correct anyways.
1310	*/
1311	SET_MAP_FLAGS (op->map, op->x, op->y, P_NEED_UPDATE);
1312	update_position (op->map, op->x, op->y);
1313	}
1314	else
1315	update_object (last, UP_OBJ_REMOVE);
1316
1317	if (QUERY_FLAG (op, FLAG_BLOCKSVIEW) || (op->glow_radius != 0))
1318	update_all_los (op->map, op->x, op->y);
1319	}	1221	}
1320		1222
1321	/*	1223	/*
1322	* merge_ob(op,top):	1224	* merge_ob(op,top):
1323	*	1225	*
1324	* This function goes through all objects below and including top, and	1226	* This function goes through all objects below and including top, and
1325	* merges op to the first matching object.	1227	* merges op to the first matching object.
1326	* If top is NULL, it is calculated.	1228	* If top is NULL, it is calculated.
1327	* Returns pointer to object if it succeded in the merge, otherwise NULL	1229	* Returns pointer to object if it succeded in the merge, otherwise NULL
1328	*/	1230	*/
1329
1330	object *	1231	object *
1331	merge_ob (object *op, object *top)	1232	merge_ob (object *op, object *top)
1332	{	1233	{
1333	if (!op->nrof)	1234	if (!op->nrof)
1334	return 0;	1235	return 0;
1335	if (top == NULL)	1236
		1237	if (!top)
1336	for (top = op; top != NULL && top->above != NULL; top = top->above);	1238	for (top = op; top && top->above; top = top->above)
		1239	;
		1240
1337	for (; top != NULL; top = top->below)	1241	for (; top; top = top->below)
1338	{	1242	if (object::can_merge (op, top))
1339	if (top == op)
1340	continue;
1341	if (CAN_MERGE (op, top))
1342	{	1243	{
1343	top->nrof += op->nrof;	1244	top->nrof += op->nrof;
1344		1245
1345	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1246	if (object *pl = top->visible_to ())
1346	op->weight = 0; /* Don't want any adjustements now */	1247	esrv_update_item (UPD_NROF, pl, top);
1347	remove_ob (op);	1248
1348	free_object (op);	1249	op->weight = 0; // cancel the addition above
		1250	op->carrying = 0; // must be 0 already
		1251
		1252	op->destroy ();
		1253
1349	return top;	1254	return top;
1350	}	1255	}
1351	}	1256
1352	return NULL;	1257	return 0;
1353	}	1258	}
1354		1259
		1260	void
		1261	object::expand_tail ()
		1262	{
		1263	if (more)
		1264	return;
		1265
		1266	object *prev = this;
		1267
		1268	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1269	{
		1270	object *op = at->instance ();
		1271
		1272	op->name = name;
		1273	op->name_pl = name_pl;
		1274	op->title = title;
		1275
		1276	op->head = this;
		1277	prev->more = op;
		1278
		1279	prev = op;
		1280	}
		1281	}
		1282
1355	/*	1283	/*
1356	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1284	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1357	* job preparing multi-part monsters	1285	* job preparing multi-part monsters.
1358	*/	1286	*/
1359	object *	1287	object *
1360	insert_ob_in_map_at (object *op, mapstruct *m, object *originator, int flag, int x, int y)	1288	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1361	{	1289	{
1362	object *	1290	op->remove ();
1363	tmp;
1364		1291
1365	if (op->head)
1366	op = op->head;
1367	for (tmp = op; tmp; tmp = tmp->more)	1292	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1368	{	1293	{
1369	tmp->x = x + tmp->arch->clone.x;	1294	tmp->x = x + tmp->arch->x;
1370	tmp->y = y + tmp->arch->clone.y;	1295	tmp->y = y + tmp->arch->y;
1371	}	1296	}
		1297
1372	return insert_ob_in_map (op, m, originator, flag);	1298	return insert_ob_in_map (op, m, originator, flag);
1373	}	1299	}
1374		1300
1375	/*	1301	/*
1376	* insert_ob_in_map (op, map, originator, flag):	1302	* insert_ob_in_map (op, map, originator, flag):
…		…
1387	* Passing 0 for flag gives proper default values, so flag really only needs	1313	* Passing 0 for flag gives proper default values, so flag really only needs
1388	* to be set if special handling is needed.	1314	* to be set if special handling is needed.
1389	*	1315	*
1390	* Return value:	1316	* Return value:
1391	* new object if 'op' was merged with other object	1317	* new object if 'op' was merged with other object
1392	* NULL if 'op' was destroyed	1318	* NULL if there was an error (destroyed, blocked etc.)
1393	* just 'op' otherwise	1319	* just 'op' otherwise
1394	*/	1320	*/
1395
1396	object *	1321	object *
1397	insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1322	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1398	{	1323	{
1399	object *tmp, *top, *floor = NULL;	1324	op->remove ();
1400	sint16 x, y;
1401		1325
1402	if (QUERY_FLAG (op, FLAG_FREED))	1326	if (m == &freed_map)//D TODO: remove soon
1403	{	1327	{//D
1404	LOG (llevError, "Trying to insert freed object!\n");	1328	LOG (llevError | logBacktrace, "tries to insert object on freed objects map: %s", op->debug_desc ());//D
1405	return NULL;
1406	}	1329	}//D
1407
1408	if (m == NULL)
1409	{
1410	dump_object (op);
1411	LOG (llevError, "Trying to insert in null-map!\n%s\n", errmsg);
1412	return op;
1413	}
1414
1415	if (out_of_map (m, op->x, op->y))
1416	{
1417	dump_object (op);
1418	LOG (llevError, "Trying to insert object outside the map.\n%s\n", errmsg);
1419	#ifdef MANY_CORES
1420	/* Better to catch this here, as otherwise the next use of this object
1421	* is likely to cause a crash. Better to find out where it is getting
1422	* improperly inserted.
1423	*/
1424	abort ();
1425	#endif
1426	return op;
1427	}
1428
1429	if (!QUERY_FLAG (op, FLAG_REMOVED))
1430	{
1431	dump_object (op);
1432	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", errmsg);
1433	return op;
1434	}
1435
1436	if (op->more != NULL)
1437	{
1438	/* The part may be on a different map. */
1439
1440	object *more = op->more;
1441
1442	/* We really need the caller to normalize coordinates - if
1443	* we set the map, that doesn't work if the location is within
1444	* a map and this is straddling an edge. So only if coordinate
1445	* is clear wrong do we normalize it.
1446	*/
1447	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1448	more->map = get_map_from_coord (m, &more->x, &more->y);
1449	else if (!more->map)
1450	{
1451	/* For backwards compatibility - when not dealing with tiled maps,
1452	* more->map should always point to the parent.
1453	*/
1454	more->map = m;
1455	}
1456
1457	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
1458	{
1459	if (!op->head)
1460	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
1461
1462	return NULL;
1463	}
1464	}
1465
1466	CLEAR_FLAG (op, FLAG_REMOVED);
1467		1330
1468	/* Ideally, the caller figures this out. However, it complicates a lot	1331	/* Ideally, the caller figures this out. However, it complicates a lot
1469	* of areas of callers (eg, anything that uses find_free_spot would now	1332	* of areas of callers (eg, anything that uses find_free_spot would now
1470	* need extra work	1333	* need extra work
1471	*/	1334	*/
1472	op->map = get_map_from_coord (m, &op->x, &op->y);	1335	maptile *newmap = m;
1473	x = op->x;	1336	if (!xy_normalise (newmap, op->x, op->y))
1474	y = op->y;	1337	{
		1338	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
		1339	return 0;
		1340	}
		1341
		1342	if (object *more = op->more)
		1343	if (!insert_ob_in_map (more, m, originator, flag))
		1344	return 0;
		1345
		1346	op->flag [FLAG_REMOVED] = false;
		1347	op->env = 0;
		1348	op->map = newmap;
		1349
		1350	mapspace &ms = op->ms ();
1475		1351
1476	/* this has to be done after we translate the coordinates.	1352	/* this has to be done after we translate the coordinates.
1477	*/	1353	*/
1478	if (op->nrof && !(flag & INS_NO_MERGE))	1354	if (op->nrof && !(flag & INS_NO_MERGE))
1479	for (tmp = GET_MAP_OB (op->map, x, y); tmp != NULL; tmp = tmp->above)	1355	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1480	if (CAN_MERGE (op, tmp))	1356	if (object::can_merge (op, tmp))
1481	{	1357	{
		1358	// TODO: we actually want to update tmp, not op,
		1359	// but some caller surely breaks when we return tmp
		1360	// from here :/
1482	op->nrof += tmp->nrof;	1361	op->nrof += tmp->nrof;
1483	remove_ob (tmp);	1362	tmp->destroy ();
1484	free_object (tmp);
1485	}	1363	}
1486		1364
1487	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1365	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1488	CLEAR_FLAG (op, FLAG_INV_LOCKED);	1366	op->clr_flag (FLAG_INV_LOCKED);
1489		1367
1490	if (!QUERY_FLAG (op, FLAG_ALIVE))	1368	if (!op->flag [FLAG_ALIVE])
1491	CLEAR_FLAG (op, FLAG_NO_STEAL);	1369	op->clr_flag (FLAG_NO_STEAL);
1492		1370
1493	if (flag & INS_BELOW_ORIGINATOR)	1371	if (flag & INS_BELOW_ORIGINATOR)
1494	{	1372	{
1495	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)	1373	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
1496	{	1374	{
1497	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1375	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1498	abort ();	1376	abort ();
1499	}	1377	}
1500		1378
		1379	if (!originator->is_on_map ())
		1380	{
		1381	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1382	op->debug_desc (), originator->debug_desc ());
		1383	abort ();
		1384	}
		1385
1501	op->above = originator;	1386	op->above = originator;
1502	op->below = originator->below;	1387	op->below = originator->below;
1503
1504	if (op->below)
1505	op->below->above = op;
1506	else
1507	SET_MAP_OB (op->map, op->x, op->y, op);
1508
1509	/* since *below* originator, no need to update top */
1510	originator->below = op;	1388	originator->below = op;
		1389
		1390	*(op->below ? &op->below->above : &ms.bot) = op;
1511	}	1391	}
1512	else	1392	else
1513	{	1393	{
		1394	object *floor = 0;
		1395	object *top = ms.top;
		1396
1514	/* If there are other objects, then */	1397	/* If there are other objects, then */
1515	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))	1398	if (top)
1516	{	1399	{
1517	object *last = NULL;
1518
1519	/*	1400	/*
1520	* If there are multiple objects on this space, we do some trickier handling.	1401	* If there are multiple objects on this space, we do some trickier handling.
1521	* We've already dealt with merging if appropriate.	1402	* We've already dealt with merging if appropriate.
1522	* Generally, we want to put the new object on top. But if	1403	* Generally, we want to put the new object on top. But if
1523	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1404	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
…		…
1526	* once we get to them. This reduces the need to traverse over all of	1407	* once we get to them. This reduces the need to traverse over all of
1527	* them when adding another one - this saves quite a bit of cpu time	1408	* them when adding another one - this saves quite a bit of cpu time
1528	* when lots of spells are cast in one area. Currently, it is presumed	1409	* when lots of spells are cast in one area. Currently, it is presumed
1529	* that flying non pickable objects are spell objects.	1410	* that flying non pickable objects are spell objects.
1530	*/	1411	*/
1531		1412	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1532	while (top != NULL)
1533	{	1413	{
1534	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))	1414	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
1535	floor = top;	1415	floor = tmp;
1536		1416
1537	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))	1417	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1538	{	1418	{
1539	/* We insert above top, so we want this object below this */	1419	/* We insert above top, so we want this object below this */
1540	top = top->below;	1420	top = tmp->below;
1541	break;	1421	break;
1542	}	1422	}
1543		1423
1544	last = top;
1545	top = top->above;	1424	top = tmp;
1546	}	1425	}
1547
1548	/* Don't want top to be NULL, so set it to the last valid object */
1549	top = last;
1550		1426
1551	/* We let update_position deal with figuring out what the space	1427	/* We let update_position deal with figuring out what the space
1552	* looks like instead of lots of conditions here.	1428	* looks like instead of lots of conditions here.
1553	* makes things faster, and effectively the same result.	1429	* makes things faster, and effectively the same result.
1554	*/	1430	*/
1555		1431
1556	/* Have object 'fall below' other objects that block view.	1432	/* Have object 'fall below' other objects that block view.
1557	* Unless those objects are exits, type 66	1433	* Unless those objects are exits.
1558	* If INS_ON_TOP is used, don't do this processing	1434	* If INS_ON_TOP is used, don't do this processing
1559	* Need to find the object that in fact blocks view, otherwise	1435	* Need to find the object that in fact blocks view, otherwise
1560	* stacking is a bit odd.	1436	* stacking is a bit odd.
1561	*/	1437	*/
1562	if (!(flag & INS_ON_TOP) &&	1438	if (!(flag & INS_ON_TOP)
1563	(get_map_flags (op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))	1439	&& ms.flags () & P_BLOCKSVIEW
		1440	&& (op->face && !faces [op->face].visibility))
1564	{	1441	{
		1442	object *last;
		1443
1565	for (last = top; last != floor; last = last->below)	1444	for (last = top; last != floor; last = last->below)
1566	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))	1445	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
1567	break;	1446	break;
		1447
1568	/* Check to see if we found the object that blocks view,	1448	/* Check to see if we found the object that blocks view,
1569	* and make sure we have a below pointer for it so that	1449	* and make sure we have a below pointer for it so that
1570	* we can get inserted below this one, which requires we	1450	* we can get inserted below this one, which requires we
1571	* set top to the object below us.	1451	* set top to the object below us.
1572	*/	1452	*/
1573	if (last && last->below && last != floor)	1453	if (last && last->below && last != floor)
1574	top = last->below;	1454	top = last->below;
1575	}	1455	}
1576	} /* If objects on this space */	1456	} /* If objects on this space */
1577		1457
1578	if (flag & INS_MAP_LOAD)
1579	top = GET_MAP_TOP (op->map, op->x, op->y);
1580
1581	if (flag & INS_ABOVE_FLOOR_ONLY)	1458	if (flag & INS_ABOVE_FLOOR_ONLY)
1582	top = floor;	1459	top = floor;
1583		1460
1584	/* Top is the object that our object (op) is going to get inserted above.	1461	// insert object above top, or bottom-most if top = 0
1585	*/
1586
1587	/* First object on this space */
1588	if (!top)	1462	if (!top)
1589	{	1463	{
1590	op->above = GET_MAP_OB (op->map, op->x, op->y);
1591
1592	if (op->above)
1593	op->above->below = op;
1594
1595	op->below = NULL;	1464	op->below = 0;
1596	SET_MAP_OB (op->map, op->x, op->y, op);	1465	op->above = ms.bot;
		1466	ms.bot = op;
		1467
		1468	*(op->above ? &op->above->below : &ms.top) = op;
1597	}	1469	}
1598	else	1470	else
1599	{ /* get inserted into the stack above top */	1471	{
1600	op->above = top->above;	1472	op->above = top->above;
1601
1602	if (op->above)
1603	op->above->below = op;	1473	top->above = op;
1604		1474
1605	op->below = top;	1475	op->below = top;
1606	top->above = op;	1476	*(op->above ? &op->above->below : &ms.top) = op;
1607	}	1477	}
		1478	}
1608		1479
1609	if (op->above == NULL)	1480	if (op->is_player ())
1610	SET_MAP_TOP (op->map, op->x, op->y, op);	1481	{
1611	} /* else not INS_BELOW_ORIGINATOR */
1612
1613	if (op->type == PLAYER)
1614	op->contr->do_los = 1;	1482	op->contr->do_los = 1;
		1483	++op->map->players;
		1484	op->map->touch ();
		1485	}
1615		1486
1616	/* If we have a floor, we know the player, if any, will be above	1487	op->map->dirty = true;
1617	* it, so save a few ticks and start from there.	1488
1618	*/	1489	if (object *pl = ms.player ())
1619	if (!(flag & INS_MAP_LOAD))	1490	//TODO: the floorbox prev/next might need updating
1620	for (tmp = floor ? floor : GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)	1491	//esrv_send_item (pl, op);
1621	if (tmp->type == PLAYER)	1492	//TODO: update floorbox to preserve ordering
1622	tmp->contr->socket.update_look = 1;	1493	if (pl->contr->ns)
		1494	pl->contr->ns->floorbox_update ();
1623		1495
1624	/* If this object glows, it may affect lighting conditions that are	1496	/* If this object glows, it may affect lighting conditions that are
1625	* visible to others on this map. But update_all_los is really	1497	* visible to others on this map. But update_all_los is really
1626	* an inefficient way to do this, as it means los for all players	1498	* an inefficient way to do this, as it means los for all players
1627	* on the map will get recalculated. The players could very well	1499	* on the map will get recalculated. The players could very well
1628	* be far away from this change and not affected in any way -	1500	* be far away from this change and not affected in any way -
1629	* this should get redone to only look for players within range,	1501	* this should get redone to only look for players within range,
1630	* or just updating the P_NEED_UPDATE for spaces within this area	1502	* or just updating the P_UPTODATE for spaces within this area
1631	* of effect may be sufficient.	1503	* of effect may be sufficient.
1632	*/	1504	*/
1633	if (MAP_DARKNESS (op->map) && (op->glow_radius != 0))	1505	if (op->affects_los ())
		1506	{
		1507	op->ms ().invalidate ();
1634	update_all_los (op->map, op->x, op->y);	1508	update_all_los (op->map, op->x, op->y);
		1509	}
1635		1510
1636	/* updates flags (blocked, alive, no magic, etc) for this map space */	1511	/* updates flags (blocked, alive, no magic, etc) for this map space */
1637	update_object (op, UP_OBJ_INSERT);	1512	update_object (op, UP_OBJ_INSERT);
1638		1513
		1514	INVOKE_OBJECT (INSERT, op);
		1515
1639	/* Don't know if moving this to the end will break anything. However,	1516	/* Don't know if moving this to the end will break anything. However,
1640	* we want to have update_look set above before calling this.	1517	* we want to have floorbox_update called before calling this.
1641	*	1518	*
1642	* check_move_on() must be after this because code called from	1519	* check_move_on() must be after this because code called from
1643	* check_move_on() depends on correct map flags (so functions like	1520	* check_move_on() depends on correct map flags (so functions like
1644	* blocked() and wall() work properly), and these flags are updated by	1521	* blocked() and wall() work properly), and these flags are updated by
1645	* update_object().	1522	* update_object().
1646	*/	1523	*/
1647		1524
1648	/* if this is not the head or flag has been passed, don't check walk on status */	1525	/* if this is not the head or flag has been passed, don't check walk on status */
1649	if (!(flag & INS_NO_WALK_ON) && !op->head)	1526	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
1650	{	1527	{
1651	if (check_move_on (op, originator))	1528	if (check_move_on (op, originator, flag))
1652	return NULL;	1529	return 0;
1653		1530
1654	/* If we are a multi part object, lets work our way through the check	1531	/* If we are a multi part object, let's work our way through the check
1655	* walk on's.	1532	* walk on's.
1656	*/	1533	*/
1657	for (tmp = op->more; tmp != NULL; tmp = tmp->more)	1534	for (object *tmp = op->more; tmp; tmp = tmp->more)
1658	if (check_move_on (tmp, originator))	1535	if (check_move_on (tmp, originator, flag))
1659	return NULL;	1536	return 0;
1660	}	1537	}
1661		1538
1662	return op;	1539	return op;
1663	}	1540	}
1664		1541
1665	/* this function inserts an object in the map, but if it	1542	/* this function inserts an object in the map, but if it
1666	* finds an object of its own type, it'll remove that one first.	1543	* finds an object of its own type, it'll remove that one first.
1667	* op is the object to insert it under: supplies x and the map.	1544	* op is the object to insert it under: supplies x and the map.
1668	*/	1545	*/
1669	void	1546	void
1670	replace_insert_ob_in_map (const char *arch_string, object *op)	1547	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1671	{	1548	{
1672	object *tmp;
1673	object *tmp1;
1674
1675	/* first search for itself and remove any old instances */	1549	/* first search for itself and remove any old instances */
1676		1550
1677	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)	1551	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1678	{
1679	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */	1552	if (tmp->arch->archname == archname) /* same archetype */
1680	{	1553	tmp->destroy ();
1681	remove_ob (tmp);
1682	free_object (tmp);
1683	}
1684	}
1685		1554
1686	tmp1 = arch_to_object (find_archetype (arch_string));	1555	object *tmp = archetype::find (archname)->instance ();
1687		1556
1688	tmp1->x = op->x;	1557	tmp->x = op->x;
1689	tmp1->y = op->y;	1558	tmp->y = op->y;
		1559
1690	insert_ob_in_map (tmp1, op->map, op, 0);	1560	insert_ob_in_map (tmp, op->map, op, 0);
1691	}	1561	}
1692
1693	/*
1694	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1695	* is returned contains nr objects, and the remaining parts contains
1696	* the rest (or is removed and freed if that number is 0).
1697	* On failure, NULL is returned, and the reason put into the
1698	* global static errmsg array.
1699	*/
1700		1562
1701	object *	1563	object *
1702	get_split_ob (object *orig_ob, uint32 nr)	1564	object::insert_at (object *where, object *originator, int flags)
1703	{	1565	{
1704	object *	1566	if (where->env)
1705	newob;	1567	return where->env->insert (this);
1706	int	1568	else
1707	is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1569	return where->map->insert (this, where->x, where->y, originator, flags);
1708
1709	if (orig_ob->nrof < nr)
1710	{
1711	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1712	return NULL;
1713	}
1714	newob = object_create_clone (orig_ob);
1715	if ((orig_ob->nrof -= nr) < 1)
1716	{
1717	if (!is_removed)
1718	remove_ob (orig_ob);
1719	free_object2 (orig_ob, 1);
1720	}
1721	else if (!is_removed)
1722	{
1723	if (orig_ob->env != NULL)
1724	sub_weight (orig_ob->env, orig_ob->weight * nr);
1725	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
1726	{
1727	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1728	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1729	return NULL;
1730	}
1731	}
1732	newob->nrof = nr;
1733
1734	return newob;
1735	}	1570	}
1736		1571
		1572	// check whether we can put this into the map, respect max_volume, max_items
		1573	bool
		1574	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1575	{
		1576	mapspace &ms = m->at (x, y);
		1577
		1578	int items = ms.items ();
		1579
		1580	if (!items // testing !items ensures we can drop at least one item
		1581	|| (items < m->max_items
		1582	&& ms.volume () < m->max_volume))
		1583	return true;
		1584
		1585	if (originator && originator->is_player ())
		1586	originator->contr->failmsgf (
		1587	"No matter how hard you try, you just cannot put the %s here H<Try to remove some items from the floor first.>",
		1588	query_name ()
		1589	);
		1590
		1591	return false;
		1592	}
		1593
1737	/*	1594	/*
1738	* decrease_ob_nr(object, number) decreases a specified number from	1595	* decrease(object, number) decreases a specified number from
1739	* the amount of an object. If the amount reaches 0, the object	1596	* the amount of an object. If the amount reaches 0, the object
1740	* is subsequently removed and freed.	1597	* is subsequently removed and freed.
1741	*	1598	*
1742	* Return value: 'op' if something is left, NULL if the amount reached 0	1599	* Return value: 'op' if something is left, NULL if the amount reached 0
1743	*/	1600	*/
		1601	bool
		1602	object::decrease (sint32 nr)
		1603	{
		1604	if (!nr)
		1605	return true;
1744		1606
		1607	nr = min (nr, nrof);
		1608
		1609	if (nrof > nr)
		1610	{
		1611	sint64 oweight = total_weight ();
		1612
		1613	nrof -= nr;
		1614
		1615	if (object *pl = visible_to ())
		1616	esrv_update_item (UPD_NROF, pl, this);
		1617
		1618	adjust_weight (env, oweight, total_weight ());
		1619
		1620	return true;
		1621	}
		1622	else
		1623	{
		1624	destroy ();
		1625	return false;
		1626	}
		1627	}
		1628
		1629	/*
		1630	* split(ob,nr) splits up ob into two parts. The part which
		1631	* is returned contains nr objects, and the remaining parts contains
		1632	* the rest (or is removed and returned if that number is 0).
		1633	* On failure, NULL is returned.
		1634	*/
1745	object *	1635	object *
1746	decrease_ob_nr (object *op, uint32 i)	1636	object::split (sint32 nr)
1747	{	1637	{
1748	object *	1638	int have = number_of ();
1749	tmp;
1750	player *
1751	pl;
1752		1639
1753	if (i == 0) /* objects with op->nrof require this check */	1640	if (have < nr)
1754	return op;	1641	return 0;
1755		1642	else if (have == nr)
1756	if (i > op->nrof)
1757	i = op->nrof;
1758
1759	if (QUERY_FLAG (op, FLAG_REMOVED))
1760	{
1761	op->nrof -= i;
1762	}	1643	{
1763	else if (op->env != NULL)
1764	{
1765	/* is this object in the players inventory, or sub container
1766	* therein?
1767	*/
1768	tmp = is_player_inv (op->env);
1769	/* nope. Is this a container the player has opened?
1770	* If so, set tmp to that player.
1771	* IMO, searching through all the players will mostly
1772	* likely be quicker than following op->env to the map,
1773	* and then searching the map for a player.
1774	*/
1775	if (!tmp)
1776	{
1777	for (pl = first_player; pl; pl = pl->next)
1778	if (pl->ob->container == op->env)
1779	break;
1780	if (pl)
1781	tmp = pl->ob;
1782	else
1783	tmp = NULL;
1784	}
1785
1786	if (i < op->nrof)
1787	{
1788	sub_weight (op->env, op->weight * i);
1789	op->nrof -= i;
1790	if (tmp)
1791	{
1792	esrv_send_item (tmp, op);
1793	}
1794	}
1795	else
1796	{
1797	remove_ob (op);	1644	remove ();
1798	op->nrof = 0;	1645	return this;
1799	if (tmp)
1800	{
1801	esrv_del_item (tmp->contr, op->count);
1802	}
1803	}
1804	}	1646	}
1805	else	1647	else
1806	{	1648	{
1807	object *	1649	decrease (nr);
1808	above = op->above;
1809		1650
1810	if (i < op->nrof)	1651	object *op = deep_clone ();
1811	{
1812	op->nrof -= i;
1813	}
1814	else
1815	{
1816	remove_ob (op);
1817	op->nrof = 0;	1652	op->nrof = nr;
1818	}
1819	/* Since we just removed op, op->above is null */
1820	for (tmp = above; tmp != NULL; tmp = tmp->above)
1821	if (tmp->type == PLAYER)
1822	{
1823	if (op->nrof)
1824	esrv_send_item (tmp, op);
1825	else
1826	esrv_del_item (tmp->contr, op->count);
1827	}
1828	}
1829
1830	if (op->nrof)
1831	{
1832	return op;	1653	return op;
1833	}	1654	}
1834	else	1655	}
		1656
		1657	object *
		1658	insert_ob_in_ob (object *op, object *where)
		1659	{
		1660	if (!where)
1835	{	1661	{
1836	free_object (op);	1662	char *dump = dump_object (op);
		1663	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1664	free (dump);
1837	return NULL;	1665	return op;
1838	}
1839	}
1840
1841	/*
1842	* add_weight(object, weight) adds the specified weight to an object,
1843	* and also updates how much the environment(s) is/are carrying.
1844	*/
1845
1846	void
1847	add_weight (object *op, signed long weight)
1848	{
1849	while (op != NULL)
1850	{	1666	}
1851	if (op->type == CONTAINER)	1667
1852	{	1668	if (where->head_ () != where)
1853	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1854	}
1855	op->carrying += weight;
1856	op = op->env;
1857	}	1669	{
1858	}	1670	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1671	where = where->head;
		1672	}
1859		1673
		1674	return where->insert (op);
		1675	}
		1676
1860	/*	1677	/*
1861	* insert_ob_in_ob(op,environment):	1678	* env->insert (op)
1862	* This function inserts the object op in the linked list	1679	* This function inserts the object op in the linked list
1863	* inside the object environment.	1680	* inside the object environment.
1864	*	1681	*
1865	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1866	* the inventory at the last position or next to other objects of the same
1867	* type.
1868	* Frank: Now sorted by type, archetype and magic!
1869	*
1870	* The function returns now pointer to inserted item, and return value can	1682	* The function returns now pointer to inserted item, and return value can
1871	* be != op, if items are merged. -Tero	1683	* be != op, if items are merged. -Tero
1872	*/	1684	*/
1873
1874	object *	1685	object *
1875	insert_ob_in_ob (object *op, object *where)	1686	object::insert (object *op)
1876	{	1687	{
1877	object *
1878	tmp, *
1879	otmp;
1880
1881	if (!QUERY_FLAG (op, FLAG_REMOVED))
1882	{
1883	dump_object (op);
1884	LOG (llevError, "Trying to insert (ob) inserted object.\n%s\n", errmsg);
1885	return op;
1886	}
1887	if (where == NULL)
1888	{
1889	dump_object (op);
1890	LOG (llevError, "Trying to put object in NULL.\n%s\n", errmsg);
1891	return op;
1892	}
1893	if (where->head)
1894	{
1895	LOG (llevDebug, "Warning: Tried to insert object wrong part of multipart object.\n");
1896	where = where->head;
1897	}
1898	if (op->more)	1688	if (op->more)
1899	{	1689	{
1900	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);	1690	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1901	return op;	1691	return op;
1902	}	1692	}
1903	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);	1693
1904	CLEAR_FLAG (op, FLAG_REMOVED);	1694	op->remove ();
		1695
		1696	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1697
1905	if (op->nrof)	1698	if (op->nrof)
1906	{
1907	for (tmp = where->inv; tmp != NULL; tmp = tmp->below)	1699	for (object *tmp = inv; tmp; tmp = tmp->below)
1908	if (CAN_MERGE (tmp, op))	1700	if (object::can_merge (tmp, op))
1909	{	1701	{
1910	/* return the original object and remove inserted object	1702	/* return the original object and remove inserted object
1911	(client needs the original object) */	1703	(client prefers the original object) */
		1704
		1705	// carring must be 0 for mergable objects
		1706	sint64 oweight = tmp->weight * tmp->nrof;
		1707
1912	tmp->nrof += op->nrof;	1708	tmp->nrof += op->nrof;
1913	/* Weight handling gets pretty funky. Since we are adding to	1709
1914	* tmp->nrof, we need to increase the weight.	1710	if (object *pl = tmp->visible_to ())
1915	*/	1711	esrv_update_item (UPD_NROF, pl, tmp);
		1712
1916	add_weight (where, op->weight * op->nrof);	1713	adjust_weight (this, oweight, tmp->weight * tmp->nrof);
1917	SET_FLAG (op, FLAG_REMOVED);	1714
1918	free_object (op); /* free the inserted object */	1715	op->destroy ();
1919	op = tmp;	1716	op = tmp;
1920	remove_ob (op); /* and fix old object's links */	1717	goto inserted;
1921	CLEAR_FLAG (op, FLAG_REMOVED);
1922	break;
1923	}	1718	}
1924		1719
1925	/* I assume combined objects have no inventory	1720	op->owner = 0; // it's his/hers now. period.
1926	* We add the weight - this object could have just been removed
1927	* (if it was possible to merge). calling remove_ob will subtract
1928	* the weight, so we need to add it in again, since we actually do
1929	* the linking below
1930	*/
1931	add_weight (where, op->weight * op->nrof);
1932	}
1933	else
1934	add_weight (where, (op->weight + op->carrying));
1935
1936	otmp = is_player_inv (where);
1937	if (otmp && otmp->contr != NULL)
1938	{
1939	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1940	fix_player (otmp);
1941	}
1942
1943	op->map = NULL;	1721	op->map = 0;
1944	op->env = where;	1722	op->x = 0;
		1723	op->y = 0;
		1724
1945	op->above = NULL;	1725	op->above = 0;
1946	op->below = NULL;	1726	op->below = inv;
1947	op->x = 0, op->y = 0;	1727	op->env = this;
1948		1728
		1729	if (inv)
		1730	inv->above = op;
		1731
		1732	inv = op;
		1733
		1734	op->flag [FLAG_REMOVED] = 0;
		1735
		1736	if (object *pl = op->visible_to ())
		1737	esrv_send_item (pl, op);
		1738
		1739	adjust_weight (this, 0, op->total_weight ());
		1740
		1741	inserted:
1949	/* reset the light list and los of the players on the map */	1742	/* reset the light list and los of the players on the map */
1950	if ((op->glow_radius != 0) && where->map)	1743	if (op->glow_radius && is_on_map ())
1951	{
1952	#ifdef DEBUG_LIGHTS
1953	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1954	#endif /* DEBUG_LIGHTS */
1955	if (MAP_DARKNESS (where->map))
1956	update_all_los (where->map, where->x, where->y);
1957	}	1744	{
1958		1745	update_stats ();
1959	/* Client has no idea of ordering so lets not bother ordering it here.	1746	update_all_los (map, x, y);
1960	* It sure simplifies this function...
1961	*/
1962	if (where->inv == NULL)
1963	where->inv = op;
1964	else
1965	{	1747	}
1966	op->below = where->inv;	1748	else if (is_player ())
1967	op->below->above = op;	1749	// if this is a player's inventory, update stats
1968	where->inv = op;	1750	contr->queue_stats_update ();
1969	}	1751
		1752	INVOKE_OBJECT (INSERT, this);
		1753
1970	return op;	1754	return op;
1971	}	1755	}
1972		1756
1973	/*	1757	/*
1974	* Checks if any objects has a move_type that matches objects	1758	* Checks if any objects has a move_type that matches objects
…		…
1988	*	1772	*
1989	* MSW 2001-07-08: Check all objects on space, not just those below	1773	* MSW 2001-07-08: Check all objects on space, not just those below
1990	* object being inserted. insert_ob_in_map may not put new objects	1774	* object being inserted. insert_ob_in_map may not put new objects
1991	* on top.	1775	* on top.
1992	*/	1776	*/
1993
1994	int	1777	int
1995	check_move_on (object *op, object *originator)	1778	check_move_on (object *op, object *originator, int flags)
1996	{	1779	{
		1780	if (op->flag [FLAG_NO_APPLY])
		1781	return 0;
		1782
1997	object *tmp;	1783	object *tmp;
1998	tag_t tag;
1999	mapstruct *m = op->map;	1784	maptile *m = op->map;
2000	int x = op->x, y = op->y;	1785	int x = op->x, y = op->y;
2001		1786
2002	MoveType move_on, move_slow, move_block;	1787	mapspace &ms = m->at (x, y);
2003		1788
2004	if (QUERY_FLAG (op, FLAG_NO_APPLY))	1789	ms.update ();
2005	return 0;
2006		1790
2007	tag = op->count;	1791	MoveType move_on = ms.move_on;
2008		1792	MoveType move_slow = ms.move_slow;
2009	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);	1793	MoveType move_block = ms.move_block;
2010	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
2011	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
2012		1794
2013	/* if nothing on this space will slow op down or be applied,	1795	/* if nothing on this space will slow op down or be applied,
2014	* no need to do checking below. have to make sure move_type	1796	* no need to do checking below. have to make sure move_type
2015	* is set, as lots of objects don't have it set - we treat that	1797	* is set, as lots of objects don't have it set - we treat that
2016	* as walking.	1798	* as walking.
…		…
2027	return 0;	1809	return 0;
2028		1810
2029	/* The objects have to be checked from top to bottom.	1811	/* The objects have to be checked from top to bottom.
2030	* Hence, we first go to the top:	1812	* Hence, we first go to the top:
2031	*/	1813	*/
2032		1814	for (object *next, *tmp = ms.top; tmp; tmp = next)
2033	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL && tmp->above != NULL; tmp = tmp->above)
2034	{
2035	/* Trim the search when we find the first other spell effect
2036	* this helps performance so that if a space has 50 spell objects,
2037	* we don't need to check all of them.
2038	*/
2039	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
2040	break;
2041	}	1815	{
		1816	next = tmp->below;
2042		1817
2043	for (; tmp; tmp = tmp->below)
2044	{
2045	if (tmp == op)	1818	if (tmp == op)
2046	continue; /* Can't apply yourself */	1819	continue; /* Can't apply yourself */
2047		1820
2048	/* Check to see if one of the movement types should be slowed down.	1821	/* Check to see if one of the movement types should be slowed down.
2049	* Second check makes sure that the movement types not being slowed	1822	* Second check makes sure that the movement types not being slowed
2050	* (~slow_move) is not blocked on this space - just because the	1823	* (~slow_move) is not blocked on this space - just because the
2051	* space doesn't slow down swimming (for example), if you can't actually	1824	* space doesn't slow down swimming (for example), if you can't actually
2052	* swim on that space, can't use it to avoid the penalty.	1825	* swim on that space, can't use it to avoid the penalty.
2053	*/	1826	*/
2054	if (!QUERY_FLAG (op, FLAG_WIZPASS))	1827	if (!op->flag [FLAG_WIZPASS])
2055	{	1828	{
2056	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1829	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
2057	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))	1830	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
2058	{	1831	{
2059
2060	float diff = tmp->move_slow_penalty * FABS (op->speed);	1832	float diff = tmp->move_slow_penalty * fabs (op->speed);
2061		1833
2062	if (op->type == PLAYER)	1834	if (op->is_player ())
2063	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||	1835	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
2064	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))	1836	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
2065	diff /= 4.0;	1837	diff /= 4.0;
2066		1838
2067	op->speed_left -= diff;	1839	op->speed_left -= diff;
2068	}	1840	}
2069	}	1841	}
2070		1842
2071	/* Basically same logic as above, except now for actual apply. */	1843	/* Basically same logic as above, except now for actual apply. */
2072	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1844	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
2073	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))	1845	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
2074	{	1846	{
		1847	if ((flags & INS_NO_AUTO_EXIT)
		1848	&& (tmp->type == EXIT || tmp->type == TELEPORTER
		1849	|| tmp->type == HOLE || tmp->type == TRAPDOOR)) //TODO: temporary, fix exits instead
		1850	continue;
		1851
2075	move_apply (tmp, op, originator);	1852	move_apply (tmp, op, originator);
2076		1853
2077	if (was_destroyed (op, tag))	1854	if (op->destroyed ())
2078	return 1;	1855	return 1;
2079		1856
2080	/* what the person/creature stepped onto has moved the object	1857	/* what the person/creature stepped onto has moved the object
2081	* someplace new. Don't process any further - if we did,	1858	* someplace new. Don't process any further - if we did,
2082	* have a feeling strange problems would result.	1859	* have a feeling strange problems would result.
…		…
2092	/*	1869	/*
2093	* present_arch(arch, map, x, y) searches for any objects with	1870	* present_arch(arch, map, x, y) searches for any objects with
2094	* a matching archetype at the given map and coordinates.	1871	* a matching archetype at the given map and coordinates.
2095	* The first matching object is returned, or NULL if none.	1872	* The first matching object is returned, or NULL if none.
2096	*/	1873	*/
2097
2098	object *	1874	object *
2099	present_arch (const archetype *at, mapstruct *m, int x, int y)	1875	present_arch (const archetype *at, maptile *m, int x, int y)
2100	{	1876	{
2101	object *
2102	tmp;
2103
2104	if (m == NULL || out_of_map (m, x, y))	1877	if (!m || out_of_map (m, x, y))
2105	{	1878	{
2106	LOG (llevError, "Present_arch called outside map.\n");	1879	LOG (llevError, "Present_arch called outside map.\n");
2107	return NULL;	1880	return NULL;
2108	}	1881	}
2109	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)	1882
2110	if (tmp->arch == at)	1883	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1884	if (tmp->arch->archname == at->archname)
2111	return tmp;	1885	return tmp;
		1886
2112	return NULL;	1887	return NULL;
2113	}	1888	}
2114		1889
2115	/*	1890	/*
2116	* present(type, map, x, y) searches for any objects with	1891	* present(type, map, x, y) searches for any objects with
2117	* a matching type variable at the given map and coordinates.	1892	* a matching type variable at the given map and coordinates.
2118	* The first matching object is returned, or NULL if none.	1893	* The first matching object is returned, or NULL if none.
2119	*/	1894	*/
2120
2121	object *	1895	object *
2122	present (unsigned char type, mapstruct *m, int x, int y)	1896	present (unsigned char type, maptile *m, int x, int y)
2123	{	1897	{
2124	object *
2125	tmp;
2126
2127	if (out_of_map (m, x, y))	1898	if (out_of_map (m, x, y))
2128	{	1899	{
2129	LOG (llevError, "Present called outside map.\n");	1900	LOG (llevError, "Present called outside map.\n");
2130	return NULL;	1901	return NULL;
2131	}	1902	}
2132	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)	1903
		1904	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
2133	if (tmp->type == type)	1905	if (tmp->type == type)
2134	return tmp;	1906	return tmp;
		1907
2135	return NULL;	1908	return NULL;
2136	}	1909	}
2137		1910
2138	/*	1911	/*
2139	* present_in_ob(type, object) searches for any objects with	1912	* present_in_ob(type, object) searches for any objects with
2140	* a matching type variable in the inventory of the given object.	1913	* a matching type variable in the inventory of the given object.
2141	* The first matching object is returned, or NULL if none.	1914	* The first matching object is returned, or NULL if none.
2142	*/	1915	*/
2143
2144	object *	1916	object *
2145	present_in_ob (unsigned char type, const object *op)	1917	present_in_ob (unsigned char type, const object *op)
2146	{	1918	{
2147	object *
2148	tmp;
2149
2150	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1919	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2151	if (tmp->type == type)	1920	if (tmp->type == type)
2152	return tmp;	1921	return tmp;
		1922
2153	return NULL;	1923	return NULL;
2154	}	1924	}
2155		1925
2156	/*	1926	/*
2157	* present_in_ob (type, str, object) searches for any objects with	1927	* present_in_ob (type, str, object) searches for any objects with
…		…
2165	* str is the string to match against. Note that we match against	1935	* str is the string to match against. Note that we match against
2166	* the object name, not the archetype name. this is so that the	1936	* the object name, not the archetype name. this is so that the
2167	* spell code can use one object type (force), but change it's name	1937	* spell code can use one object type (force), but change it's name
2168	* to be unique.	1938	* to be unique.
2169	*/	1939	*/
2170
2171	object *	1940	object *
2172	present_in_ob_by_name (int type, const char *str, const object *op)	1941	present_in_ob_by_name (int type, const char *str, const object *op)
2173	{	1942	{
2174	object *
2175	tmp;
2176
2177	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1943	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2178	{
2179	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))	1944	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2180	return tmp;	1945	return tmp;
2181	}	1946
2182	return NULL;	1947	return 0;
2183	}	1948	}
2184		1949
2185	/*	1950	/*
2186	* present_arch_in_ob(archetype, object) searches for any objects with	1951	* present_arch_in_ob(archetype, object) searches for any objects with
2187	* a matching archetype in the inventory of the given object.	1952	* a matching archetype in the inventory of the given object.
2188	* The first matching object is returned, or NULL if none.	1953	* The first matching object is returned, or NULL if none.
2189	*/	1954	*/
2190
2191	object *	1955	object *
2192	present_arch_in_ob (const archetype *at, const object *op)	1956	present_arch_in_ob (const archetype *at, const object *op)
2193	{	1957	{
2194	object *
2195	tmp;
2196
2197	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1958	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2198	if (tmp->arch == at)	1959	if (tmp->arch->archname == at->archname)
2199	return tmp;	1960	return tmp;
		1961
2200	return NULL;	1962	return NULL;
2201	}	1963	}
2202		1964
2203	/*	1965	/*
2204	* activate recursively a flag on an object inventory	1966	* activate recursively a flag on an object inventory
2205	*/	1967	*/
2206	void	1968	void
2207	flag_inv (object *op, int flag)	1969	flag_inv (object *op, int flag)
2208	{	1970	{
2209	object *
2210	tmp;
2211
2212	if (op->inv)
2213	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1971	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2214	{	1972	{
2215	SET_FLAG (tmp, flag);	1973	tmp->set_flag (flag);
2216	flag_inv (tmp, flag);	1974	flag_inv (tmp, flag);
2217	}	1975	}
2218	} /*	1976	}
		1977
		1978	/*
2219	* desactivate recursively a flag on an object inventory	1979	* deactivate recursively a flag on an object inventory
2220	*/	1980	*/
2221	void	1981	void
2222	unflag_inv (object *op, int flag)	1982	unflag_inv (object *op, int flag)
2223	{	1983	{
2224	object *
2225	tmp;
2226
2227	if (op->inv)
2228	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1984	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2229	{	1985	{
2230	CLEAR_FLAG (tmp, flag);	1986	tmp->clr_flag (flag);
2231	unflag_inv (tmp, flag);	1987	unflag_inv (tmp, flag);
2232	}	1988	}
2233	}
2234
2235	/*
2236	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2237	* all it's inventory (recursively).
2238	* If checksums are used, a player will get set_cheat called for
2239	* him/her-self and all object carried by a call to this function.
2240	*/
2241
2242	void
2243	set_cheat (object *op)
2244	{
2245	SET_FLAG (op, FLAG_WAS_WIZ);
2246	flag_inv (op, FLAG_WAS_WIZ);
2247	}	1989	}
2248		1990
2249	/*	1991	/*
2250	* find_free_spot(object, map, x, y, start, stop) will search for	1992	* find_free_spot(object, map, x, y, start, stop) will search for
2251	* a spot at the given map and coordinates which will be able to contain	1993	* a spot at the given map and coordinates which will be able to contain
…		…
2253	* to search (see the freearr_x/y[] definition).	1995	* to search (see the freearr_x/y[] definition).
2254	* It returns a random choice among the alternatives found.	1996	* It returns a random choice among the alternatives found.
2255	* start and stop are where to start relative to the free_arr array (1,9	1997	* start and stop are where to start relative to the free_arr array (1,9
2256	* does all 4 immediate directions). This returns the index into the	1998	* does all 4 immediate directions). This returns the index into the
2257	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1999	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2258	* Note - this only checks to see if there is space for the head of the
2259	* object - if it is a multispace object, this should be called for all
2260	* pieces.
2261	* Note2: This function does correctly handle tiled maps, but does not	2000	* Note: This function does correctly handle tiled maps, but does not
2262	* inform the caller. However, insert_ob_in_map will update as	2001	* inform the caller. However, insert_ob_in_map will update as
2263	* necessary, so the caller shouldn't need to do any special work.	2002	* necessary, so the caller shouldn't need to do any special work.
2264	* Note - updated to take an object instead of archetype - this is necessary	2003	* Note - updated to take an object instead of archetype - this is necessary
2265	* because arch_blocked (now ob_blocked) needs to know the movement type	2004	* because arch_blocked (now ob_blocked) needs to know the movement type
2266	* to know if the space in question will block the object. We can't use	2005	* to know if the space in question will block the object. We can't use
2267	* the archetype because that isn't correct if the monster has been	2006	* the archetype because that isn't correct if the monster has been
2268	* customized, changed states, etc.	2007	* customized, changed states, etc.
2269	*/	2008	*/
2270
2271	int	2009	int
2272	find_free_spot (const object *ob, mapstruct *m, int x, int y, int start, int stop)	2010	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
2273	{	2011	{
2274	int
2275	i,
2276	index = 0, flag;
2277	static int
2278	altern[SIZEOFFREE];	2012	int altern[SIZEOFFREE];
		2013	int index = 0;
2279		2014
2280	for (i = start; i < stop; i++)	2015	for (int i = start; i < stop; i++)
2281	{	2016	{
2282	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);	2017	mapxy pos (m, x, y); pos.move (i);
2283	if (!flag)	2018
		2019	if (!pos.normalise ())
		2020	continue;
		2021
		2022	mapspace &ms = *pos;
		2023
		2024	if (ms.flags () & P_IS_ALIVE)
		2025	continue;
		2026
		2027	/* However, often
		2028	* ob doesn't have any move type (when used to place exits)
		2029	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2030	*/
		2031	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2032	{
2284	altern[index++] = i;	2033	altern [index++] = i;
		2034	continue;
		2035	}
2285		2036
2286	/* Basically, if we find a wall on a space, we cut down the search size.	2037	/* Basically, if we find a wall on a space, we cut down the search size.
2287	* In this way, we won't return spaces that are on another side of a wall.	2038	* In this way, we won't return spaces that are on another side of a wall.
2288	* This mostly work, but it cuts down the search size in all directions -	2039	* This mostly work, but it cuts down the search size in all directions -
2289	* if the space being examined only has a wall to the north and empty	2040	* if the space being examined only has a wall to the north and empty
2290	* spaces in all the other directions, this will reduce the search space	2041	* spaces in all the other directions, this will reduce the search space
2291	* to only the spaces immediately surrounding the target area, and	2042	* to only the spaces immediately surrounding the target area, and
2292	* won't look 2 spaces south of the target space.	2043	* won't look 2 spaces south of the target space.
2293	*/	2044	*/
2294	else if ((flag & AB_NO_PASS) && maxfree[i] < stop)	2045	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2046	{
2295	stop = maxfree[i];	2047	stop = maxfree[i];
		2048	continue;
		2049	}
		2050
		2051	/* Note it is intentional that we check ob - the movement type of the
		2052	* head of the object should correspond for the entire object.
		2053	*/
		2054	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2055	continue;
		2056
		2057	if (ob->blocked (pos.m, pos.x, pos.y))
		2058	continue;
		2059
		2060	altern [index++] = i;
2296	}	2061	}
		2062
2297	if (!index)	2063	if (!index)
2298	return -1;	2064	return -1;
		2065
2299	return altern[RANDOM () % index];	2066	return altern [rndm (index)];
2300	}	2067	}
2301		2068
2302	/*	2069	/*
2303	* find_first_free_spot(archetype, mapstruct, x, y) works like	2070	* find_first_free_spot(archetype, maptile, x, y) works like
2304	* find_free_spot(), but it will search max number of squares.	2071	* find_free_spot(), but it will search max number of squares.
2305	* But it will return the first available spot, not a random choice.	2072	* But it will return the first available spot, not a random choice.
2306	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2073	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2307	*/	2074	*/
2308
2309	int	2075	int
2310	find_first_free_spot (const object *ob, mapstruct *m, int x, int y)	2076	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2311	{	2077	{
2312	int
2313	i;
2314
2315	for (i = 0; i < SIZEOFFREE; i++)	2078	for (int i = 0; i < SIZEOFFREE; i++)
2316	{
2317	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))	2079	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2318	return i;	2080	return i;
2319	}	2081
2320	return -1;	2082	return -1;
2321	}	2083	}
2322		2084
2323	/*	2085	/*
2324	* The function permute(arr, begin, end) randomly reorders the array	2086	* The function permute(arr, begin, end) randomly reorders the array
2325	* arr[begin..end-1].	2087	* arr[begin..end-1].
		2088	* now uses a fisher-yates shuffle, old permute was broken
2326	*/	2089	*/
2327	static void	2090	static void
2328	permute (int *arr, int begin, int end)	2091	permute (int *arr, int begin, int end)
2329	{	2092	{
2330	int	2093	arr += begin;
2331	i,
2332	j,
2333	tmp,
2334	len;
2335
2336	len = end - begin;	2094	end -= begin;
2337	for (i = begin; i < end; i++)
2338	{
2339	j = begin + RANDOM () % len;
2340		2095
2341	tmp = arr[i];	2096	while (--end)
2342	arr[i] = arr[j];	2097	swap (arr [end], arr [rndm (end + 1)]);
2343	arr[j] = tmp;
2344	}
2345	}	2098	}
2346		2099
2347	/* new function to make monster searching more efficient, and effective!	2100	/* new function to make monster searching more efficient, and effective!
2348	* This basically returns a randomized array (in the passed pointer) of	2101	* This basically returns a randomized array (in the passed pointer) of
2349	* the spaces to find monsters. In this way, it won't always look for	2102	* the spaces to find monsters. In this way, it won't always look for
…		…
2352	* the 3x3 area will be searched, just not in a predictable order.	2105	* the 3x3 area will be searched, just not in a predictable order.
2353	*/	2106	*/
2354	void	2107	void
2355	get_search_arr (int *search_arr)	2108	get_search_arr (int *search_arr)
2356	{	2109	{
2357	int	2110	int i;
2358	i;
2359		2111
2360	for (i = 0; i < SIZEOFFREE; i++)	2112	for (i = 0; i < SIZEOFFREE; i++)
2361	{
2362	search_arr[i] = i;	2113	search_arr[i] = i;
2363	}
2364		2114
2365	permute (search_arr, 1, SIZEOFFREE1 + 1);	2115	permute (search_arr, 1, SIZEOFFREE1 + 1);
2366	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);	2116	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2367	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);	2117	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2368	}	2118	}
…		…
2377	* Perhaps incorrectly, but I'm making the assumption that exclude	2127	* Perhaps incorrectly, but I'm making the assumption that exclude
2378	* is actually want is going to try and move there. We need this info	2128	* is actually want is going to try and move there. We need this info
2379	* because we have to know what movement the thing looking to move	2129	* because we have to know what movement the thing looking to move
2380	* there is capable of.	2130	* there is capable of.
2381	*/	2131	*/
2382
2383	int	2132	int
2384	find_dir (mapstruct *m, int x, int y, object *exclude)	2133	find_dir (maptile *m, int x, int y, object *exclude)
2385	{	2134	{
2386	int
2387	i,
2388	max = SIZEOFFREE, mflags;	2135	int max = SIZEOFFREE;
2389	sint16	2136	MoveType move_type;
2390	nx,
2391	ny;
2392	object *
2393	tmp;
2394	mapstruct *
2395	mp;
2396	MoveType
2397	blocked,
2398	move_type;
2399		2137
2400	if (exclude && exclude->head)	2138	if (exclude && exclude->head_ () != exclude)
2401	{	2139	{
2402	exclude = exclude->head;	2140	exclude = exclude->head;
2403	move_type = exclude->move_type;	2141	move_type = exclude->move_type;
2404	}	2142	}
2405	else	2143	else
2406	{	2144	{
2407	/* If we don't have anything, presume it can use all movement types. */	2145	/* If we don't have anything, presume it can use all movement types. */
2408	move_type = MOVE_ALL;	2146	move_type = MOVE_ALL;
2409	}	2147	}
2410		2148
2411	for (i = 1; i < max; i++)	2149	for (int i = 1; i < max; i++)
2412	{	2150	{
2413	mp = m;	2151	mapxy pos (m, x, y);
2414	nx = x + freearr_x[i];	2152	pos.move (i);
2415	ny = y + freearr_y[i];
2416		2153
2417	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);	2154	if (!pos.normalise ())
2418	if (mflags & P_OUT_OF_MAP)
2419	{
2420	max = maxfree[i];	2155	max = maxfree[i];
2421	}
2422	else	2156	else
2423	{	2157	{
2424	blocked = GET_MAP_MOVE_BLOCK (mp, nx, ny);	2158	mapspace &ms = *pos;
2425		2159
2426	if ((move_type & blocked) == move_type)	2160	if ((move_type & ms.move_block) == move_type)
		2161	max = maxfree [i];
		2162	else if (ms.flags () & P_IS_ALIVE)
2427	{	2163	{
2428	max = maxfree[i];	2164	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
2429	}	2165	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2430	else if (mflags & P_IS_ALIVE)	2166	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2431	{
2432	for (tmp = GET_MAP_OB (mp, nx, ny); tmp != NULL; tmp = tmp->above)
2433	{
2434	if ((QUERY_FLAG (tmp, FLAG_MONSTER) || tmp->type == PLAYER) && (tmp != exclude || (tmp->head && tmp->head != exclude)))
2435	{
2436	break;
2437	}
2438	}
2439	if (tmp)
2440	{
2441	return freedir[i];	2167	return freedir [i];
2442	}
2443	}	2168	}
2444	}	2169	}
2445	}	2170	}
		2171
2446	return 0;	2172	return 0;
2447	}	2173	}
2448		2174
2449	/*	2175	/*
2450	* distance(object 1, object 2) will return the square of the	2176	* distance(object 1, object 2) will return the square of the
2451	* distance between the two given objects.	2177	* distance between the two given objects.
2452	*/	2178	*/
2453
2454	int	2179	int
2455	distance (const object *ob1, const object *ob2)	2180	distance (const object *ob1, const object *ob2)
2456	{	2181	{
2457	int
2458	i;
2459
2460	i = (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);	2182	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2461	return i;
2462	}	2183	}
2463		2184
2464	/*	2185	/*
2465	* find_dir_2(delta-x,delta-y) will return a direction in which	2186	* find_dir_2(delta-x,delta-y) will return a direction value
2466	* an object which has subtracted the x and y coordinates of another	2187	* for running into direct [dx, dy].
2467	* object, needs to travel toward it.	2188	* (the opposite of crossfire's find_dir_2!)
2468	*/	2189	*/
2469
2470	int	2190	int
2471	find_dir_2 (int x, int y)	2191	find_dir_2 (int x, int y)
2472	{	2192	{
		2193	#if 1 // new algorithm
		2194	// this works by putting x, y into 16 sectors, which
		2195	// are not equal sized, but are a better approximation
		2196	// then the old algorithm, and then using a mapping
		2197	// table to map it into a direction value.
		2198	// basically, it maps these comparisons to each bit
		2199	// bit #3: x < 0
		2200	// bit #2: y < 0
		2201	// bit #1: x > y
		2202	// bit #0: x > 2y
		2203
		2204	static const uint8 dir[16] = {
		2205	4, 5, 4, 3,
		2206	2, 1, 2, 3,
		2207	6, 5, 6, 7,
		2208	8, 1, 8, 7,
		2209	};
		2210	int sector = 0;
		2211
		2212	// this is a bit ugly, but more likely to result in branchless code
		2213	sector |= x < 0 ? 8 : 0;
		2214	x = x < 0 ? -x : x; // abs
		2215
		2216	sector |= y < 0 ? 4 : 0;
		2217	y = y < 0 ? -y : y; // abs
		2218
		2219	if (x > y)
		2220	{
		2221	sector |= 2;
		2222
		2223	if (x > y * 2)
		2224	sector |= 1;
		2225	}
		2226	else
		2227	{
		2228	if (y > x * 2)
		2229	sector |= 1;
		2230	else if (!y)
		2231	return 0; // x == 0 here
		2232	}
		2233
		2234	return dir [sector];
		2235	#else // old algorithm
2473	int	2236	int q;
2474	q;
2475		2237
2476	if (y)	2238	if (y)
2477	q = x * 100 / y;	2239	q = 128 * x / y;
2478	else if (x)	2240	else if (x)
2479	q = -300 * x;	2241	q = -512 * x; // to make it > 309
2480	else	2242	else
2481	return 0;	2243	return 0;
2482		2244
2483	if (y > 0)	2245	if (y > 0)
2484	{	2246	{
2485	if (q < -242)	2247	if (q < -309) return 7;
		2248	if (q < -52) return 6;
		2249	if (q < 52) return 5;
		2250	if (q < 309) return 4;
		2251
2486	return 3;	2252	return 3;
2487	if (q < -41)	2253	}
2488	return 2;	2254	else
2489	if (q < 41)	2255	{
2490	return 1;	2256	if (q < -309) return 3;
2491	if (q < 242)	2257	if (q < -52) return 2;
2492	return 8;	2258	if (q < 52) return 1;
		2259	if (q < 309) return 8;
		2260
2493	return 7;	2261	return 7;
2494	}	2262	}
2495		2263	#endif
2496	if (q < -242)
2497	return 7;
2498	if (q < -41)
2499	return 6;
2500	if (q < 41)
2501	return 5;
2502	if (q < 242)
2503	return 4;
2504
2505	return 3;
2506	}
2507
2508	/*
2509	* absdir(int): Returns a number between 1 and 8, which represent
2510	* the "absolute" direction of a number (it actually takes care of
2511	* "overflow" in previous calculations of a direction).
2512	*/
2513
2514	int
2515	absdir (int d)
2516	{
2517	while (d < 1)
2518	d += 8;
2519	while (d > 8)
2520	d -= 8;
2521	return d;
2522	}	2264	}
2523		2265
2524	/*	2266	/*
2525	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2267	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2526	* between two directions (which are expected to be absolute (see absdir())	2268	* between two directions (which are expected to be absolute (see absdir())
2527	*/	2269	*/
2528
2529	int	2270	int
2530	dirdiff (int dir1, int dir2)	2271	dirdiff (int dir1, int dir2)
2531	{	2272	{
2532	int
2533	d;
2534
2535	d = abs (dir1 - dir2);	2273	int d = abs (dir1 - dir2);
2536	if (d > 4)	2274
2537	d = 8 - d;	2275	return d > 4 ? 8 - d : d;
2538	return d;
2539	}	2276	}
2540		2277
2541	/* peterm:	2278	/* peterm:
2542	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2279	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
2543	* Basically, this is a table of directions, and what directions	2280	* Basically, this is a table of directions, and what directions
…		…
2545	* This basically means that if direction is 15, then it could either go	2282	* This basically means that if direction is 15, then it could either go
2546	* direction 4, 14, or 16 to get back to where we are.	2283	* direction 4, 14, or 16 to get back to where we are.
2547	* Moved from spell_util.c to object.c with the other related direction	2284	* Moved from spell_util.c to object.c with the other related direction
2548	* functions.	2285	* functions.
2549	*/	2286	*/
2550
2551	int
2552	reduction_dir[SIZEOFFREE][3] = {	2287	static const int reduction_dir[SIZEOFFREE][3] = {
2553	{0, 0, 0}, /* 0 */	2288	{0, 0, 0}, /* 0 */
2554	{0, 0, 0}, /* 1 */	2289	{0, 0, 0}, /* 1 */
2555	{0, 0, 0}, /* 2 */	2290	{0, 0, 0}, /* 2 */
2556	{0, 0, 0}, /* 3 */	2291	{0, 0, 0}, /* 3 */
2557	{0, 0, 0}, /* 4 */	2292	{0, 0, 0}, /* 4 */
…		…
2605	* find a path to that monster that we found. If not,	2340	* find a path to that monster that we found. If not,
2606	* we don't bother going toward it. Returns 1 if we	2341	* we don't bother going toward it. Returns 1 if we
2607	* can see a direct way to get it	2342	* can see a direct way to get it
2608	* Modified to be map tile aware -.MSW	2343	* Modified to be map tile aware -.MSW
2609	*/	2344	*/
2610
2611
2612	int	2345	int
2613	can_see_monsterP (mapstruct *m, int x, int y, int dir)	2346	can_see_monsterP (maptile *m, int x, int y, int dir)
2614	{	2347	{
2615	sint16	2348	sint16 dx, dy;
2616	dx,
2617	dy;
2618	int
2619	mflags;	2349	int mflags;
2620		2350
2621	if (dir < 0)	2351	if (dir < 0)
2622	return 0; /* exit condition: invalid direction */	2352	return 0; /* exit condition: invalid direction */
2623		2353
2624	dx = x + freearr_x[dir];	2354	dx = x + freearr_x[dir];
…		…
2637	return 0;	2367	return 0;
2638		2368
2639	/* yes, can see. */	2369	/* yes, can see. */
2640	if (dir < 9)	2370	if (dir < 9)
2641	return 1;	2371	return 1;
		2372
2642	return can_see_monsterP (m, x, y, reduction_dir[dir][0]) |	2373	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2643	can_see_monsterP (m, x, y, reduction_dir[dir][1]) | can_see_monsterP (m, x, y, reduction_dir[dir][2]);	2374	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
		2375	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2644	}	2376	}
2645
2646
2647		2377
2648	/*	2378	/*
2649	* can_pick(picker, item): finds out if an object is possible to be	2379	* can_pick(picker, item): finds out if an object is possible to be
2650	* picked up by the picker. Returnes 1 if it can be	2380	* picked up by the picker. Returnes 1 if it can be
2651	* picked up, otherwise 0.	2381	* picked up, otherwise 0.
…		…
2653	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2383	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2654	* core dumps if they do.	2384	* core dumps if they do.
2655	*	2385	*
2656	* Add a check so we can't pick up invisible objects (0.93.8)	2386	* Add a check so we can't pick up invisible objects (0.93.8)
2657	*/	2387	*/
2658
2659	int	2388	int
2660	can_pick (const object *who, const object *item)	2389	can_pick (const object *who, const object *item)
2661	{	2390	{
2662	return /*QUERY_FLAG(who,FLAG_WIZ)|| */	2391	return /*who->flag [FLAG_WIZ]|| */
2663	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&	2392	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2664	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));	2393	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2665	}	2394	}
2666		2395
		2396	//-GPL
2667		2397
2668	/*	2398	/*
2669	* create clone from object to another	2399	* create clone from object to another
2670	*/	2400	*/
2671	object *	2401	object *
2672	object_create_clone (object *asrc)	2402	object::deep_clone ()
2673	{	2403	{
2674	object *	2404	assert (("deep_clone called on non-head object", is_head ()));
2675	dst = NULL, *tmp, *src, *part, *prev, *item;
2676		2405
2677	if (!asrc)	2406	object *dst = clone ();
2678	return NULL;
2679	src = asrc;
2680	if (src->head)
2681	src = src->head;
2682		2407
2683	prev = NULL;	2408	object *prev = dst;
2684	for (part = src; part; part = part->more)	2409	for (object *part = this->more; part; part = part->more)
2685	{	2410	{
2686	tmp = get_object ();	2411	object *tmp = part->clone ();
2687	copy_object (part, tmp);
2688	tmp->x -= src->x;
2689	tmp->y -= src->y;
2690	if (!part->head)
2691	{
2692	dst = tmp;
2693	tmp->head = NULL;
2694	}
2695	else
2696	{
2697	tmp->head = dst;	2412	tmp->head = dst;
2698	}
2699	tmp->more = NULL;
2700	if (prev)
2701	prev->more = tmp;	2413	prev->more = tmp;
2702	prev = tmp;	2414	prev = tmp;
2703	}	2415	}
2704		2416
2705	/*** copy inventory ***/
2706	for (item = src->inv; item; item = item->below)	2417	for (object *item = inv; item; item = item->below)
2707	{	2418	insert_ob_in_ob (item->deep_clone (), dst);
2708	(void) insert_ob_in_ob (object_create_clone (item), dst);
2709	}
2710		2419
2711	return dst;	2420	return dst;
2712	}
2713
2714	/* return true if the object was destroyed, 0 otherwise */
2715	int
2716	was_destroyed (const object *op, tag_t old_tag)
2717	{
2718	/* checking for FLAG_FREED isn't necessary, but makes this function more
2719	* robust */
2720	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2721	}
2722
2723	/* GROS - Creates an object using a string representing its content. */
2724
2725	/* Basically, we save the content of the string to a temp file, then call */
2726
2727	/* load_object on it. I admit it is a highly inefficient way to make things, */
2728
2729	/* but it was simple to make and allows reusing the load_object function. */
2730
2731	/* Remember not to use load_object_str in a time-critical situation. */
2732
2733	/* Also remember that multiparts objects are not supported for now. */
2734
2735	object *
2736	load_object_str (const char *obstr)
2737	{
2738	object *
2739	op;
2740	char
2741	filename[MAX_BUF];
2742
2743	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2744
2745	FILE *
2746	tempfile = fopen (filename, "w");
2747
2748	if (tempfile == NULL)
2749	{
2750	LOG (llevError, "Error - Unable to access load object temp file\n");
2751	return NULL;
2752	};
2753	fprintf (tempfile, obstr);
2754	fclose (tempfile);
2755
2756	op = get_object ();
2757
2758	object_thawer
2759	thawer (filename);
2760
2761	if (thawer)
2762	load_object (thawer, op, 0);
2763
2764	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2765	CLEAR_FLAG (op, FLAG_REMOVED);
2766
2767	return op;
2768	}	2421	}
2769		2422
2770	/* This returns the first object in who's inventory that	2423	/* This returns the first object in who's inventory that
2771	* has the same type and subtype match.	2424	* has the same type and subtype match.
2772	* returns NULL if no match.	2425	* returns NULL if no match.
2773	*/	2426	*/
2774	object *	2427	object *
2775	find_obj_by_type_subtype (const object *who, int type, int subtype)	2428	find_obj_by_type_subtype (const object *who, int type, int subtype)
2776	{	2429	{
2777	object *
2778	tmp;
2779
2780	for (tmp = who->inv; tmp; tmp = tmp->below)	2430	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2781	if (tmp->type == type && tmp->subtype == subtype)	2431	if (tmp->type == type && tmp->subtype == subtype)
2782	return tmp;	2432	return tmp;
2783		2433
2784	return NULL;	2434	return 0;
2785	}	2435	}
2786		2436
2787	/* If ob has a field named key, return the link from the list,	2437	/* Zero the key_values on op, decrementing the shared-string
2788	* otherwise return NULL.	2438	* refcounts and freeing the links.
2789	*	2439	*/
2790	* key must be a passed in shared string - otherwise, this won't	2440	void
2791	* do the desired thing.	2441	key_values::clear ()
2792	*/
2793	key_value *
2794	get_ob_key_link (const object *ob, const char *key)
2795	{	2442	{
2796	key_value *	2443	for (key_value *kvp = first; kvp; )
2797	link;	2444	{
2798		2445	key_value *next = kvp->next;
2799	for (link = ob->key_values; link != NULL; link = link->next)	2446	delete kvp;
		2447	kvp = next;
2800	{	2448	}
		2449
		2450	first = 0;
		2451	}
		2452
		2453	shstr_tmp
		2454	key_values::get (shstr_tmp key) const
		2455	{
		2456	for (key_value *kv = first; kv; kv = kv->next)
2801	if (link->key == key)	2457	if (kv->key == key)
		2458	return kv->value;
		2459
		2460	return shstr ();
		2461	}
		2462
		2463	void
		2464	key_values::add (shstr_tmp key, shstr_tmp value)
		2465	{
		2466	key_value *kv = new key_value;
		2467
		2468	kv->next = first;
		2469	kv->key = key;
		2470	kv->value = value;
		2471
		2472	first = kv;
		2473	}
		2474
		2475	void
		2476	key_values::set (shstr_tmp key, shstr_tmp value)
		2477	{
		2478	for (key_value *kv = first; kv; kv = kv->next)
		2479	if (kv->key == key)
		2480	{
		2481	kv->value = value;
		2482	return;
		2483	}
		2484
		2485	add (key, value);
		2486	}
		2487
		2488	void
		2489	key_values::del (shstr_tmp key)
		2490	{
		2491	for (key_value **kvp = &first; *kvp; kvp = &(*kvp)->next)
		2492	if ((*kvp)->key == key)
		2493	{
		2494	key_value *kv = *kvp;
		2495	*kvp = (*kvp)->next;
		2496	delete kv;
		2497	return;
		2498	}
		2499	}
		2500
		2501	void
		2502	key_values::reverse ()
		2503	{
		2504	key_value *prev = 0;
		2505	key_value *head = first;
		2506
		2507	while (head)
		2508	{
		2509	key_value *node = head;
		2510	head = head->next;
		2511	node->next = prev;
		2512	prev = node;
		2513	}
		2514
		2515	first = prev;
		2516	}
		2517
		2518	key_values &
		2519	key_values::operator =(const key_values &kv)
		2520	{
		2521	clear ();
		2522
		2523	for (key_value *kvp = kv.first; kvp; kvp = kvp->next)
		2524	add (kvp->key, kvp->value);
		2525
		2526	reverse ();
		2527	}
		2528
		2529	object::depth_iterator::depth_iterator (object *container)
		2530	: iterator_base (container)
		2531	{
		2532	while (item->inv)
		2533	item = item->inv;
		2534	}
		2535
		2536	void
		2537	object::depth_iterator::next ()
		2538	{
		2539	if (item->below)
		2540	{
		2541	item = item->below;
		2542
		2543	while (item->inv)
		2544	item = item->inv;
		2545	}
		2546	else
		2547	item = item->env;
		2548	}
		2549
		2550	const char *
		2551	object::flag_desc (char *desc, int len) const
		2552	{
		2553	char *p = desc;
		2554	bool first = true;
		2555
		2556	*p = 0;
		2557
		2558	for (int i = 0; i < NUM_FLAGS; i++)
		2559	{
		2560	if (len <= 10) // magic constant!
2802	{	2561	{
2803	return link;	2562	snprintf (p, len, ",...");
		2563	break;
2804	}	2564	}
2805	}
2806		2565
2807	return NULL;	2566	if (flag [i])
2808	}	2567	{
		2568	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2569	len -= cnt;
		2570	p += cnt;
		2571	first = false;
		2572	}
		2573	}
2809		2574
2810	/*	2575	return desc;
2811	* Returns the value of op has an extra_field for key, or NULL.	2576	}
2812	*	2577
2813	* The argument doesn't need to be a shared string.	2578	// return a suitable string describing an object in enough detail to find it
2814	*
2815	* The returned string is shared.
2816	*/
2817	const char *	2579	const char *
2818	get_ob_key_value (const object *op, const char *const key)	2580	object::debug_desc (char *info) const
2819	{	2581	{
2820	key_value *	2582	char flagdesc[512];
2821	link;	2583	char info2[256 * 4];
		2584	char *p = info;
		2585
		2586	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2587	count,
		2588	uuid.c_str (),
		2589	&name,
		2590	title ? ",title:\"" : "",
		2591	title ? (const char *)title : "",
		2592	title ? "\"" : "",
		2593	flag_desc (flagdesc, 512), type);
		2594
		2595	if (!flag[FLAG_REMOVED] && env)
		2596	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2597
		2598	if (map)
		2599	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2600
		2601	return info;
		2602	}
		2603
2822	const char *	2604	const char *
2823	canonical_key;	2605	object::debug_desc () const
		2606	{
		2607	static char info[3][256 * 4];
		2608	static int info_idx;
2824		2609
2825	canonical_key = shstr::find (key);	2610	return debug_desc (info [++info_idx % 3]);
		2611	}
2826		2612
2827	if (canonical_key == NULL)	2613	struct region *
2828	{	2614	object::region () const
2829	/* 1. There being a field named key on any object	2615	{
2830	* implies there'd be a shared string to find.	2616	return map ? map->region (x, y)
2831	* 2. Since there isn't, no object has this field.	2617	: region::default_region ();
2832	* 3. Therefore, *this* object doesn't have this field.	2618	}
2833	*/	2619
		2620	//+GPL
		2621
		2622	void
		2623	object::open_container (object *new_container)
		2624	{
		2625	if (container == new_container)
2834	return NULL;	2626	return;
		2627
		2628	object *old_container = container;
		2629
		2630	if (old_container)
2835	}	2631	{
		2632	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2633	return;
2836		2634
2837	/* This is copied from get_ob_key_link() above -	2635	#if 0
2838	* only 4 lines, and saves the function call overhead.	2636	// remove the "Close old_container" object.
		2637	if (object *closer = old_container->inv)
		2638	if (closer->type == CLOSE_CON)
		2639	closer->destroy ();
		2640	#endif
		2641
		2642	// make sure the container is available
		2643	esrv_send_item (this, old_container);
		2644
		2645	old_container->flag [FLAG_APPLIED] = false;
		2646	container = 0;
		2647
		2648	// client needs item update to make it work, client bug requires this to be separate
		2649	esrv_update_item (UPD_FLAGS, this, old_container);
		2650
		2651	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2652	play_sound (sound_find ("chest_close"));
		2653	}
		2654
		2655	if (new_container)
		2656	{
		2657	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2658	return;
		2659
		2660	// TODO: this does not seem to serve any purpose anymore?
		2661	#if 0
		2662	// insert the "Close Container" object.
		2663	if (archetype *closer = new_container->other_arch)
		2664	{
		2665	object *closer = new_container->other_arch->instance ();
		2666	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2667	new_container->insert (closer);
		2668	}
		2669	#endif
		2670
		2671	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2672
		2673	// make sure the container is available, client bug requires this to be separate
		2674	esrv_send_item (this, new_container);
		2675
		2676	new_container->flag [FLAG_APPLIED] = true;
		2677	container = new_container;
		2678
		2679	// client needs flag change
		2680	esrv_update_item (UPD_FLAGS, this, new_container);
		2681	esrv_send_inventory (this, new_container);
		2682	play_sound (sound_find ("chest_open"));
		2683	}
		2684	// else if (!old_container->env && contr && contr->ns)
		2685	// contr->ns->floorbox_reset ();
		2686	}
		2687
		2688	//-GPL
		2689
		2690	// prefetch some flat area around the player
		2691	static void
		2692	prefetch_surrounding_area (object *op, maptile *map, int range)
		2693	{
		2694	for (maprect *rect = map->split_to_tiles (mapwalk_buf,
		2695	op->x - range , op->y - range ,
		2696	op->x + range + 1, op->y + range + 1);
		2697	rect->m;
		2698	++rect)
		2699	{
		2700	rect->m->touch ();
		2701	rect->m->activate ();
		2702	}
		2703	}
		2704
		2705	// prefetch a generous area around the player, also up and down
		2706	void
		2707	object::prefetch_surrounding_maps ()
		2708	{
		2709	prefetch_surrounding_area (this, map, 40);
		2710
		2711	if (maptile *m = map->tile_available (TILE_DOWN))
		2712	prefetch_surrounding_area (this, m, 20);
		2713
		2714	if (maptile *m = map->tile_available (TILE_UP))
		2715	prefetch_surrounding_area (this, m, 20);
		2716	}
		2717
		2718	//+GPL
		2719
		2720	object *
		2721	object::force_find (shstr_tmp name)
		2722	{
		2723	/* cycle through his inventory to look for the MARK we want to
		2724	* place
2839	*/	2725	*/
2840	for (link = op->key_values; link != NULL; link = link->next)	2726	for (object *tmp = inv; tmp; tmp = tmp->below)
2841	{	2727	if (tmp->type == FORCE && tmp->slaying == name)
2842	if (link->key == canonical_key)	2728	return splay (tmp);
2843	{	2729
2844	return link->value;
2845	}
2846	}
2847	return NULL;	2730	return 0;
2848	}	2731	}
2849		2732
2850		2733	void
2851	/*	2734	object::force_set_timer (int duration)
2852	* Updates the canonical_key in op to value.
2853	*
2854	* canonical_key is a shared string (value doesn't have to be).
2855	*
2856	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2857	* keys.
2858	*
2859	* Returns TRUE on success.
2860	*/
2861	int
2862	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
2863	{	2735	{
2864	key_value *	2736	this->duration = 1;
2865	field = NULL, *last = NULL;	2737	this->speed_left = -1.f;
2866		2738
2867	for (field = op->key_values; field != NULL; field = field->next)	2739	this->set_speed (duration ? 1.f / duration : 0.f);
2868	{	2740	}
2869	if (field->key != canonical_key)
2870	{
2871	last = field;
2872	continue;
2873	}
2874		2741
2875	if (value)	2742	object *
2876	field->value = value;	2743	object::force_add (shstr_tmp name, int duration)
2877	else	2744	{
2878	{	2745	if (object *force = force_find (name))
2879	/* Basically, if the archetype has this key set,	2746	force->destroy ();
2880	* we need to store the null value so when we save
2881	* it, we save the empty value so that when we load,
2882	* we get this value back again.
2883	*/
2884	if (get_ob_key_link (&op->arch->clone, canonical_key))
2885	field->value = 0;
2886	else
2887	{
2888	if (last)
2889	last->next = field->next;
2890	else
2891	op->key_values = field->next;
2892		2747
2893	delete	2748	object *force = archetype::get (FORCE_NAME);
2894	field;	2749
2895	}	2750	force->slaying = name;
2896	}	2751	force->force_set_timer (duration);
		2752	force->flag [FLAG_APPLIED] = true;
		2753
		2754	return insert (force);
		2755	}
		2756
		2757	void
		2758	object::play_sound (faceidx sound) const
		2759	{
		2760	if (!sound)
2897	return TRUE;	2761	return;
		2762
		2763	if (is_on_map ())
		2764	map->play_sound (sound, x, y);
		2765	else if (object *pl = in_player ())
		2766	pl->contr->play_sound (sound);
		2767	}
		2768
		2769	void
		2770	object::say_msg (const char *msg) const
		2771	{
		2772	if (is_on_map ())
		2773	map->say_msg (msg, x, y);
		2774	else if (object *pl = in_player ())
		2775	pl->contr->play_sound (sound);
		2776	}
		2777
		2778	void
		2779	object::make_noise ()
		2780	{
		2781	// we do not model noise in the map, so instead put
		2782	// a temporary light into the noise source
		2783	// could use the map instead, but that's less reliable for our
		2784	// goal, which is to make invisibility a bit harder to exploit
		2785
		2786	// currently only works sensibly for players
		2787	if (!is_player ())
		2788	return;
		2789
		2790	// find old force, or create new one
		2791	object *force = force_find (shstr_noise_force);
		2792
		2793	if (force)
		2794	force->speed_left = -1.f; // patch old speed up
		2795	else
2898	}	2796	{
2899	/* IF we get here, key doesn't exist */	2797	force = archetype::get (shstr_noise_force);
2900		2798
2901	/* No field, we'll have to add it. */	2799	force->slaying = shstr_noise_force;
		2800	force->stats.food = 1;
		2801	force->speed_left = -1.f;
2902		2802
2903	if (!add_key)	2803	force->set_speed (1.f / 4.f);
		2804	force->flag [FLAG_IS_USED_UP] = true;
		2805	force->flag [FLAG_APPLIED] = true;
		2806
		2807	insert (force);
2904	{	2808	}
2905	return FALSE;	2809	}
		2810
		2811	void object::change_move_type (MoveType mt)
		2812	{
		2813	if (move_type == mt)
		2814	return;
		2815
		2816	if (is_on_map ())
2906	}	2817	{
2907	/* There isn't any good reason to store a null	2818	// we are on the map, so handle move_on/off effects
2908	* value in the key/value list. If the archetype has	2819	remove ();
2909	* this key, then we should also have it, so shouldn't	2820	move_type = mt;
2910	* be here. If user wants to store empty strings,	2821	map->insert (this, x, y, this);
2911	* should pass in ""	2822	}
		2823	else
		2824	move_type = mt;
		2825	}
		2826
		2827	/* object should be a player.
		2828	* we return the object the player has marked with the 'mark' command
		2829	* below. If no match is found (or object has changed), we return
		2830	* NULL. We leave it up to the calling function to print messages if
		2831	* nothing is found.
2912	*/	2832	*/
2913	if (value == NULL)	2833	object *
		2834	object::mark () const
		2835	{
		2836	if (contr && contr->mark && contr->mark->env == this)
		2837	return contr->mark;
		2838	else
2914	return TRUE;	2839	return 0;
2915
2916	field = new key_value;
2917
2918	field->key = canonical_key;
2919	field->value = value;
2920	/* Usual prepend-addition. */
2921	field->next = op->key_values;
2922	op->key_values = field;
2923
2924	return TRUE;
2925	}	2840	}
2926		2841
2927	/*	2842	// put marked object first in the inventory
2928	* Updates the key in op to value.	2843	// this is used by identify-like spells so players can influence
2929	*	2844	// the order a bit.
2930	* If add_key is FALSE, this will only update existing keys,	2845	void
2931	* and not add new ones.	2846	object::splay_marked ()
2932	* In general, should be little reason FALSE is ever passed in for add_key
2933	*
2934	* Returns TRUE on success.
2935	*/
2936	int
2937	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2938	{	2847	{
2939	shstr	2848	if (object *marked = mark ())
2940	key_ (key);	2849	splay (marked);
2941
2942	return set_ob_key_value_s (op, key_, value, add_key);
2943	}	2850	}
		2851

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