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Comparing deliantra/server/common/object.C (file contents):
Revision 1.12 by elmex, Sun Sep 3 14:33:47 2006 UTC vs.
Revision 1.341 by root, Fri Feb 25 07:23:38 2011 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: object.C,v 1.12 2006/09/03 14:33:47 elmex Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
13	it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
14	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
15	(at your option) any later version.	11	* option) any later version.
16		12	*
17	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the Affero GNU General Public License
23	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
25		21	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	* The authors can be reached via e-mail to <support@deliantra.net>
27	*/	23	*/
28		24
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	25	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	26	#include <stdio.h>
35	#include <sys/types.h>	27	#include <sys/types.h>
36	#include <sys/uio.h>	28	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	29	#include <object.h>
39	#include <funcpoint.h>	30	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>
42	#ifdef MEMORY_DEBUG
43	int nroffreeobjects = 0;
44	int nrofallocobjects = 0;
45	#undef OBJ_EXPAND
46	#define OBJ_EXPAND 1
47	#else
48	object objarray[STARTMAX]; /* All objects, allocated this way at first */
49	int nroffreeobjects = STARTMAX; /* How many OBs allocated and free (free) */
50	int nrofallocobjects = STARTMAX; /* How many OBs allocated (free + used) */
51	#endif
52		31
53	object *objects; /* Pointer to the list of used objects */	32	#include <bitset>
54	object *free_objects; /* Pointer to the list of unused objects */
55	object *active_objects; /* List of active objects that need to be processed */
56		33
		34	UUID UUID::cur;
		35	static uint64_t seq_next_save;
		36	static const uint64 UUID_GAP = 1<<19;
		37	uint32_t mapspace::smellcount = 10000;
		38
		39	objectvec objects;
		40	activevec actives;
		41
		42	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
57	short freearr_x[SIZEOFFREE]=	50	short freearr_x[SIZEOFFREE] = {
58	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,	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,
59	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	54	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		55	};
60	short freearr_y[SIZEOFFREE]=	56	short freearr_y[SIZEOFFREE] = {
61	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	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,
62	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	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
63	int maxfree[SIZEOFFREE]=	61	};
64	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,
65	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};
66	int freedir[SIZEOFFREE]= {	62	int freedir[SIZEOFFREE] = {
67	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	63	0,
68	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	64	1, 2, 3, 4, 5, 6, 7, 8,
		65	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		66	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		67	};
69		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	}
70		233
71	/* 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. */
		235	static bool
72	static int compare_ob_value_lists_one(const object * wants, const object * has) {	236	compare_ob_value_lists_one (const object *wants, const object *has)
73	key_value * wants_field;	237	{
74
75	/* 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
76	* 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
77	* different structure or at least keep the lists sorted...	240	* different structure or at least keep the lists sorted...
78	*/	241	*/
79		242
80	/* For each field in wants, */	243	/* For each field in wants, */
81	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	244	for (key_value *kv = wants->key_values; kv; kv = kv->next)
82	key_value * has_field;	245	if (has->kv_get (kv->key) != kv->value)
83		246	return false;
84	/* Look for a field in has with the same key. */	247
85	has_field = get_ob_key_link(has, wants_field->key);
86
87	if (has_field == NULL) {
88	/* No field with that name. */
89	return FALSE;
90	}
91
92	/* Found the matching field. */
93	if (has_field->value != wants_field->value) {
94	/* Values don't match, so this half of the comparison is false. */
95	return FALSE;
96	}
97
98	/* If we get here, we found a match. Now for the next field in wants. */
99	}
100
101	/* If we get here, every field in wants has a matching field in has. */	248	/* If we get here, every field in wants has a matching field in has. */
102	return TRUE;	249	return true;
103	}	250	}
104		251
105	/* Returns TRUE if ob1 has the same key_values as ob2. */	252	/* Returns TRUE if ob1 has the same key_values as ob2. */
		253	static bool
106	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	254	compare_ob_value_lists (const object *ob1, const object *ob2)
		255	{
107	/* 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,
108	* so we need to run the comparison *twice*. :(	257	* so we need to run the comparison *twice*. :(
109	*/	258	*/
110	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);
111	}	261	}
112		262
113	/* 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
114	* they can be merged together.	264	* they can be merged together.
115	*	265	*
116	* 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
117	* replaces - this is mostly for clarity - a decent compiler should hopefully	267	* replaces - this is mostly for clarity - a decent compiler should hopefully
118	* reduce this to the same efficiency.	268	* reduce this to the same efficiency.
119	*	269	*
120	* Check nrof variable *before* calling CAN_MERGE()	270	* Check nrof variable *before* calling can_merge()
121	*	271	*
122	* Improvements made with merge: Better checking on potion, and also	272	* Improvements made with merge: Better checking on potion, and also
123	* check weight	273	* check weight
124	*/	274	*/
125		275	bool object::can_merge_slow (object *ob1, object *ob2)
126	int CAN_MERGE(object *ob1, object *ob2) {	276	{
127
128	/* A couple quicksanity checks */	277	/* A couple quick sanity checks */
129	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	278	if (ob1 == ob2
		279	|| ob1->type != ob2->type
		280	|| ob1->value != ob2->value
		281	|| ob1->name != ob2->name
		282	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
		283	return 0;
130		284
131	if (ob1->speed != ob2->speed) return 0;	285	/* Do not merge objects if nrof would overflow, assume nrof
		286	* is always 0 .. 2**31-1 */
		287	if (ob1->nrof > 0x7fffffff - ob2->nrof)
		288	return 0;
		289
		290	/* If the objects have been identified, set the BEEN_APPLIED flag.
		291	* This is to the comparison of the flags below will be OK. We
		292	* just can't ignore the been applied or identified flags, as they
		293	* are not equal - just if it has been identified, the been_applied
		294	* flags lose any meaning.
		295	*/
		296	if (ob1->flag [FLAG_IDENTIFIED])
		297	ob1->set_flag (FLAG_BEEN_APPLIED);
		298
		299	if (ob2->flag [FLAG_IDENTIFIED])
		300	ob2->set_flag (FLAG_BEEN_APPLIED);
		301
		302	if (ob1->arch->archname != ob2->arch->archname
		303	|| ob1->name != ob2->name
		304	|| ob1->title != ob2->title
		305	|| ob1->msg != ob2->msg
		306	|| ob1->weight != ob2->weight
		307	|| ob1->attacktype != ob2->attacktype
		308	|| ob1->magic != ob2->magic
		309	|| ob1->slaying != ob2->slaying
		310	|| ob1->skill != ob2->skill
		311	|| ob1->value != ob2->value
		312	|| ob1->animation_id != ob2->animation_id
		313	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
		314	|| ob1->client_type != ob2->client_type
		315	|| ob1->material != ob2->material
		316	|| ob1->lore != ob2->lore
		317	|| ob1->subtype != ob2->subtype
		318	|| ob1->move_type != ob2->move_type
		319	|| ob1->move_block != ob2->move_block
		320	|| ob1->move_allow != ob2->move_allow
		321	|| ob1->move_on != ob2->move_on
		322	|| ob1->move_off != ob2->move_off
		323	|| ob1->move_slow != ob2->move_slow
		324	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		325	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		326	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
		327	return 0;
		328
		329	if ((ob1->flag ^ ob2->flag)
		330	.reset (FLAG_INV_LOCKED)
		331	.reset (FLAG_REMOVED)
		332	.any ())
		333	return 0;
		334
		335	/* This is really a spellbook check - we should in general
		336	* not merge objects with real inventories, as splitting them
		337	* is hard.
		338	*/
		339	if (ob1->inv || ob2->inv)
		340	{
		341	if (!(ob1->inv && ob2->inv))
		342	return 0; /* inventories differ in length */
		343
		344	if (ob1->inv->below || ob2->inv->below)
		345	return 0; /* more than one object in inv */
		346
		347	if (!object::can_merge (ob1->inv, ob2->inv))
		348	return 0; /* inventory objects differ */
		349
		350	/* inventory ok - still need to check rest of this object to see
		351	* if it is valid.
		352	*/
		353	}
		354
		355	/* Don't merge objects that are applied. With the new 'body' code,
		356	* it is possible for most any character to have more than one of
		357	* some items equipped, and we don't want those to merge.
		358	*/
		359	if (ob1->flag [FLAG_APPLIED] || ob2->flag [FLAG_APPLIED])
		360	return 0;
		361
132	/* Note sure why the following is the case - either the object has to	362	/* Note sure why the following is the case - either the object has to
133	* be animated or have a very low speed. Is this an attempted monster	363	* be animated or have a very low speed. Is this an attempted monster
134	* check?	364	* check?
135	*/	365	*/
136	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	366	if (!ob1->flag [FLAG_ANIMATE] && ob1->has_active_speed ())
		367	return 0;
		368
		369	switch (ob1->type)
		370	{
		371	case SCROLL:
		372	if (ob1->level != ob2->level)
		373	return 0;
		374	break;
		375	}
		376
		377	if (ob1->key_values || ob2->key_values)
		378	{
		379	/* At least one of these has key_values. */
		380	if ((!ob1->key_values) != (!ob2->key_values))
		381	return 0; /* One has fields, but the other one doesn't. */
		382
		383	if (!compare_ob_value_lists (ob1, ob2))
137	return 0;	384	return 0;
		385	}
138		386
139	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	387	if (ob1->self || ob2->self)
140	* value could not be stored in a sint32 (which unfortunately sometimes is
141	* used to store nrof).
142	*/
143	if (ob1->nrof+ob2->nrof >= 1UL<<31)
144	return 0;
145
146	/* This is really a spellbook check - really, we should
147	* check all objects in the inventory.
148	*/
149	if (ob1->inv || ob2->inv) {
150	/* if one object has inventory but the other doesn't, not equiv */
151	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
152
153	/* Now check to see if the two inventory objects could merge */
154	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
155
156	/* inventory ok - still need to check rest of this object to see
157	* if it is valid.
158	*/
159	}	388	{
		389	ob1->optimise ();
		390	ob2->optimise ();
160		391
161	/* If the objects have been identified, set the BEEN_APPLIED flag.	392	if (ob1->self || ob2->self)
162	* This is to the comparison of the flags below will be OK. We
163	* just can't ignore the been applied or identified flags, as they
164	* are not equal - just if it has been identified, the been_applied
165	* flags lose any meaning.
166	*/
167	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
168	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
169
170	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
171	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
172
173
174	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
175	* being locked in inventory should prevent merging.
176	* 0x4 in flags3 is CLIENT_SENT
177	*/
178	if ((ob1->arch != ob2->arch) ||
179	(ob1->flags[0] != ob2->flags[0]) ||
180	(ob1->flags[1] != ob2->flags[1]) ||
181	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
182	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
183	(ob1->name != ob2->name) ||
184	(ob1->title != ob2->title) ||
185	(ob1->msg != ob2->msg) ||
186	(ob1->weight != ob2->weight) ||
187	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
188	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
189	(ob1->attacktype != ob2->attacktype) ||
190	(ob1->magic != ob2->magic) ||
191	(ob1->slaying != ob2->slaying) ||
192	(ob1->skill != ob2->skill) ||
193	(ob1->value != ob2->value) ||
194	(ob1->animation_id != ob2->animation_id) ||
195	(ob1->client_type != ob2->client_type) ||
196	(ob1->materialname != ob2->materialname) ||
197	(ob1->lore != ob2->lore) ||
198	(ob1->subtype != ob2->subtype) ||
199	(ob1->move_type != ob2->move_type) ||
200	(ob1->move_block != ob2->move_block) ||
201	(ob1->move_allow != ob2->move_allow) ||
202	(ob1->move_on != ob2->move_on) ||
203	(ob1->move_off != ob2->move_off) ||
204	(ob1->move_slow != ob2->move_slow) ||
205	(ob1->move_slow_penalty != ob2->move_slow_penalty)
206	)	393	{
		394	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		395	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		396
		397	if (k1 != k2)
207	return 0;	398	return 0;
208		399
209	/* Don't merge objects that are applied. With the new 'body' code,	400	if (k1 == 0)
210	* it is possible for most any character to have more than one of
211	* some items equipped, and we don't want those to merge.
212	*/
213	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))
214	return 0;
215
216	switch (ob1->type) {
217	case SCROLL:
218	if (ob1->level != ob2->level) return 0;
219	break;
220
221	}
222	if (ob1->key_values != NULL || ob2->key_values != NULL) {
223	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {
225	/* One has fields, but the other one doesn't. */
226	return 0;	401	return 1;
227	} else if (!compare_ob_value_lists(ob1, ob2)) {	402
		403	if (!cfperl_can_merge (ob1, ob2))
228	return 0;	404	return 0;
229	}	405	}
230	}	406	}
231		407
232	/* Everything passes, must be OK. */	408	/* Everything passes, must be OK. */
233	return 1;	409	return 1;
234	}	410	}
235		411
		412	// find player who can see this object
		413	object *
		414	object::visible_to () const
		415	{
		416	if (client_visible () && !flag [FLAG_REMOVED])
		417	{
		418	// see if we are in a container of sorts
		419	if (env)
		420	{
		421	// the player inventory itself is always visible
		422	if (env->is_player ())
		423	return env;
		424
		425	// else a player could have our env open
		426	object *envest = env->outer_env_or_self ();
		427
		428	// the player itself is always on a map, so we will find him here
		429	// even if our inv is in a player.
		430	if (envest->is_on_map ())
		431	if (object *pl = envest->ms ().player ())
		432	if (pl->container_ () == env)
		433	return pl;
		434	}
		435	else
		436	{
		437	// maybe there is a player standing on the same mapspace
		438	// this will catch the case where "this" is a player
		439	if (object *pl = ms ().player ())
		440	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		441	|| pl->container_ () == this)
		442	return pl;
		443	}
		444	}
		445
		446	return 0;
		447	}
		448
		449	// adjust weight per container type ("of holding")
		450	static uint32
		451	weight_adjust_for (object *op, uint32 weight)
		452	{
		453	return op->type == CONTAINER
		454	? weight - weight * op->stats.Str / 100
		455	: weight;
		456	}
		457
236	/*	458	/*
		459	* subtracts, then adds, the specified weight to an object,
		460	* and also updates how much the environment(s) is/are carrying.
		461	*/
		462	static void
		463	adjust_weight (object *op, sint32 sub, sint32 add)
		464	{
		465	while (op)
		466	{
		467	sint32 ocarrying = op->carrying;
		468
		469	op->carrying -= weight_adjust_for (op, sub);
		470	op->carrying += weight_adjust_for (op, add);
		471
		472	if (object *pl = op->visible_to ())
		473	if (pl != op) // player is handled lazily
		474	esrv_update_item (UPD_WEIGHT, pl, op);
		475
		476	sub = ocarrying;
		477	add = op->carrying;
		478
		479	op = op->env;
		480	}
		481	}
		482
		483	/*
237	* sum_weight() is a recursive function which calculates the weight	484	* this is a recursive function which calculates the weight
238	* an object is carrying. It goes through in figures out how much	485	* an object is carrying. It goes through op and figures out how much
239	* containers are carrying, and sums it up.	486	* containers are carrying, and sums it up.
240	*/	487	*/
241	signed long sum_weight(object *op) {	488	void
242	signed long sum;	489	object::update_weight ()
243	object *inv;	490	{
244	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	491	sint32 sum = 0;
245	if (inv->inv)	492
246	sum_weight(inv);	493	for (object *op = inv; op; op = op->below)
247	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	494	{
		495	op->update_weight ();
		496
		497	sum += weight_adjust_for (this, op->total_weight ());
248	}	498	}
249	if (op->type == CONTAINER && op->stats.Str)	499
250	sum = (sum * (100 - op->stats.Str))/100;	500	if (sum != carrying)
251	if(op->carrying != sum)	501	{
		502	if (carrying != sum && carrying)//D
		503	LOG (llevDebug, "updating carrying got %ld, expected %ld (%s)\n",
		504	(long long)sum, (long long)carrying, debug_desc ());
		505
252	op->carrying = sum;	506	carrying = sum;
253	return sum;
254	}
255		507
		508	if (object *pl = visible_to ())
		509	if (pl != this) // player is handled lazily
		510	esrv_update_item (UPD_WEIGHT, pl, this);
		511	}
		512	}
		513
256	/**	514	/*
257	* Return the outermost environment object for a given object.	515	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
258	*/	516	*/
259		517	char *
260	object *object_get_env_recursive (object *op) {
261	while (op->env != NULL)
262	op = op->env;
263	return op;
264	}
265
266	/*
267	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
268	* a better check. We basically keeping traversing up until we can't
269	* or find a player.
270	*/
271
272	object *is_player_inv (object *op) {
273	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
274	if (op->env==op)
275	op->env = NULL;
276	return op;
277	}
278
279	/*
280	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
281	* Some error messages.
282	* The result of the dump is stored in the static global errmsg array.
283	*/
284
285	void dump_object2(object *op) {
286	errmsg[0] = 0;
287	return;
288	//TODO//D#d#
289	#if 0
290	char *cp;
291	/* object *tmp;*/
292
293	if(op->arch!=NULL) {
294	strcat(errmsg,"arch ");
295	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
296	strcat(errmsg,"\n");
297	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
298	strcat(errmsg,cp);
299	#if 0
300	/* Don't dump player diffs - they are too long, mostly meaningless, and
301	* will overflow the buffer.
302	* Changed so that we don't dump inventory either. This may
303	* also overflow the buffer.
304	*/
305	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	for (tmp=op->inv; tmp; tmp=tmp->below)
308	dump_object2(tmp);
309	#endif
310	strcat(errmsg,"end\n");
311	} else {
312	strcat(errmsg,"Object ");
313	if (op->name==NULL) strcat(errmsg, "(null)");
314	else strcat(errmsg,op->name);
315	strcat(errmsg,"\n");
316	#if 0
317	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
318	strcat(errmsg,cp);
319	for (tmp=op->inv; tmp; tmp=tmp->below)
320	dump_object2(tmp);
321	#endif
322	strcat(errmsg,"end\n");
323	}
324	#endif
325	}
326
327	/*
328	* Dumps an object. Returns output in the static global errmsg array.
329	*/
330
331	void dump_object(object *op) {	518	dump_object (object *op)
332	if(op==NULL) {	519	{
333	strcpy(errmsg,"[NULL pointer]");	520	if (!op)
334	return;	521	return strdup ("[NULLOBJ]");
335	}
336	errmsg[0]='\0';
337	dump_object2(op);
338	}
339		522
340	void dump_all_objects(void) {	523	object_freezer freezer;
341	object *op;	524	op->write (freezer);
342	for(op=objects;op!=NULL;op=op->next) {	525	return freezer.as_string ();
343	dump_object(op);
344	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
345	}
346	}	526	}
347		527
348	/*	528	char *
349	* get_nearest_part(multi-object, object 2) returns the part of the	529	object::as_string ()
350	* multi-object 1 which is closest to the second object.	530	{
351	* If it's not a multi-object, it is returned.	531	return dump_object (this);
352	*/
353
354	object *get_nearest_part(object *op, const object *pl) {
355	object *tmp,*closest;
356	int last_dist,i;
357	if(op->more==NULL)
358	return op;
359	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
360	if((i=distance(tmp,pl))<last_dist)
361	closest=tmp,last_dist=i;
362	return closest;
363	}	532	}
364		533
365	/*	534	/*
366	* Returns the object which has the count-variable equal to the argument.	535	* Returns the object which has the count-variable equal to the argument.
		536	* VERRRY slow.
367	*/	537	*/
368		538	object *
369	object *find_object(tag_t i) {	539	find_object (tag_t i)
370	object *op;	540	{
371	for(op=objects;op!=NULL;op=op->next)	541	for_all_objects (op)
372	if(op->count==i)	542	if (op->count == i)
373	break;
374	return op;	543	return op;
		544
		545	return 0;
		546	}
		547
		548	/*
		549	* Returns the object which has the uuid equal to the argument.
		550	* MOAR VERRRY slow.
		551	*/
		552
		553	object *
		554	find_object_uuid (UUID i)
		555	{
		556	for_all_objects (op)
		557	if (op->uuid == i)
		558	return op;
		559
		560	return 0;
375	}	561	}
376		562
377	/*	563	/*
378	* Returns the first object which has a name equal to the argument.	564	* Returns the first object which has a name equal to the argument.
379	* Used only by the patch command, but not all that useful.	565	* Used only by the patch command, but not all that useful.
380	* Enables features like "patch <name-of-other-player> food 999"	566	* Enables features like "patch <name-of-other-player> food 999"
381	*/	567	*/
382		568	object *
383	object *find_object_name(const char *str) {	569	find_object_name (const char *str)
384	const char *name = shstr::find (str);	570	{
385	object *op;	571	shstr_cmp str_ (str);
386	for(op=objects;op!=NULL;op=op->next)	572
		573	if (str_)
		574	for_all_objects (op)
387	if(&op->name == name)	575	if (op->name == str_)
388	break;	576	return op;
389		577
390	return op;	578	return 0;
391	}	579	}
392
393	void free_all_object_data(void) {
394	#ifdef MEMORY_DEBUG
395	object *op, *next;
396
397	for (op=free_objects; op!=NULL; ) {
398	next=op->next;
399	free(op);
400	nrofallocobjects--;
401	nroffreeobjects--;
402	op=next;
403	}
404	#endif
405	LOG(llevDebug,"%d allocated objects, %d free objects, STARMAX=%d\n",
406	nrofallocobjects, nroffreeobjects,STARTMAX);
407	}
408
409	/*
410	* Returns the object which this object marks as being the owner.
411	* A id-scheme is used to avoid pointing to objects which have been
412	* freed and are now reused. If this is detected, the owner is
413	* set to NULL, and NULL is returned.
414	* Changed 2004-02-12 - if the player is setting at the play again
415	* prompt, he is removed, and we don't want to treat him as an owner of
416	* anything, so check removed flag. I don't expect that this should break
417	* anything - once an object is removed, it is basically dead anyways.
418	*/
419
420	object *get_owner(object *op) {
421	if(op->owner==NULL)
422	return NULL;
423
424	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
425	op->owner->count==op->ownercount)
426	return op->owner;
427
428	op->owner=NULL;
429	op->ownercount=0;
430	return NULL;
431	}
432
433	void clear_owner(object *op)
434	{
435	if (!op) return;
436
437	if (op->owner && op->ownercount == op->owner->count)
438	op->owner->refcount--;
439
440	op->owner = NULL;
441	op->ownercount = 0;
442	}
443
444
445		580
446	/*	581	/*
447	* Sets the owner and sets the skill and exp pointers to owner's current	582	* Sets the owner and sets the skill and exp pointers to owner's current
448	* skill and experience objects.	583	* skill and experience objects.
		584	* ACTUALLY NO! investigate! TODO
449	*/	585	*/
450	void set_owner (object *op, object *owner)	586	void
		587	object::set_owner (object *owner)
451	{	588	{
452	if(owner==NULL||op==NULL)	589	// allow objects which own objects
		590	if (owner)
		591	while (owner->owner)
		592	owner = owner->owner;
		593
		594	if (flag [FLAG_FREED])
		595	{
		596	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
453	return;	597	return;
		598	}
454		599
455	/* next line added to allow objects which own objects */
456	/* Add a check for ownercounts in here, as I got into an endless loop
457	* with the fireball owning a poison cloud which then owned the
458	* fireball. I believe that was caused by one of the objects getting
459	* freed and then another object replacing it. Since the ownercounts
460	* didn't match, this check is valid and I believe that cause is valid.
461	*/
462	while (owner->owner && owner!=owner->owner &&
463	owner->ownercount==owner->owner->count) owner=owner->owner;
464
465	/* IF the owner still has an owner, we did not resolve to a final owner.
466	* so lets not add to that.
467	*/
468	if (owner->owner) return;
469
470	op->owner=owner;	600	this->owner = owner;
471
472	op->ownercount=owner->count;
473	owner->refcount++;
474
475	}
476
477	/* Set the owner to clone's current owner and set the skill and experience
478	* objects to clone's objects (typically those objects that where the owner's
479	* current skill and experience objects at the time when clone's owner was
480	* set - not the owner's current skill and experience objects).
481	*
482	* Use this function if player created an object (e.g. fire bullet, swarm
483	* spell), and this object creates further objects whose kills should be
484	* accounted for the player's original skill, even if player has changed
485	* skills meanwhile.
486	*/
487	void copy_owner (object *op, object *clone)
488	{
489	object *owner = get_owner (clone);
490	if (owner == NULL) {
491	/* players don't have owners - they own themselves. Update
492	* as appropriate.
493	*/
494	if (clone->type == PLAYER) owner=clone;
495	else return;
496	}
497	set_owner(op, owner);
498
499	}
500
501	/*
502	* Resets vital variables in an object
503	*/
504
505	void reset_object(object *op) {
506
507	op->name = NULL;
508	op->name_pl = NULL;
509	op->title = NULL;
510	op->race = NULL;
511	op->slaying = NULL;
512	op->skill = NULL;
513	op->msg = NULL;
514	op->materialname = NULL;
515	op->lore = NULL;
516	clear_object(op);
517	}	601	}
518		602
519	/* Zero the key_values on op, decrementing the shared-string	603	/* Zero the key_values on op, decrementing the shared-string
520	* refcounts and freeing the links.	604	* refcounts and freeing the links.
521	*/	605	*/
		606	static void
522	static void free_key_values(object * op)	607	free_key_values (object *op)
523	{	608	{
524	for (key_value *i = op->key_values; i != 0; )	609	for (key_value *i = op->key_values; i; )
525	{	610	{
526	key_value *next = i->next;	611	key_value *next = i->next;
527	delete i;	612	delete i;
		613
528	i = next;	614	i = next;
529	}	615	}
530		616
531	op->key_values = 0;	617	op->key_values = 0;
532	}	618	}
533		619
534	/*	620	/*
535	* clear_object() frees everything allocated by an object, and also
536	* clears all variables and flags to default settings.
537	*/
538
539	void clear_object(object *op)
540	{
541	op->clear ();
542
543	free_key_values (op);
544
545	/* the memset will clear all these values for us, but we need
546	* to reduce the refcount on them.
547	*/
548	op->name = 0;
549	op->name_pl = 0;
550	op->title = 0;
551	op->race = 0;
552	op->slaying = 0;
553	op->skill = 0;
554	op->msg = 0;
555	op->lore = 0;
556	op->materialname = 0;
557
558	memset((void*)op, 0, sizeof (object_special));
559	/* Below here, we clear things that are not done by the memset,
560	* or set default values that are not zero.
561	*/
562	/* This is more or less true */
563	SET_FLAG (op, FLAG_REMOVED);
564
565	op->contr = NULL;
566	op->below = NULL;
567	op->above = NULL;
568	op->inv = NULL;
569	op->container=NULL;
570	op->env=NULL;
571	op->more=NULL;
572	op->head=NULL;
573	op->map=NULL;
574	op->refcount=0;
575	op->active_next = NULL;
576	op->active_prev = NULL;
577	/* What is not cleared is next, prev, and count */
578
579	op->expmul=1.0;
580	op->face = blank_face;
581	op->attacked_by_count = (tag_t) -1;
582
583	if (settings.casting_time)
584	op->casting_time = -1;
585	}
586
587	/*
588	* copy object first frees everything allocated by the second object,	621	* copy_to first frees everything allocated by the dst object,
589	* and then copies the contends of the first object into the second	622	* and then copies the contents of itself into the second
590	* object, allocating what needs to be allocated. Basically, any	623	* object, allocating what needs to be allocated. Basically, any
591	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	624	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
592	* if the first object is freed, the pointers in the new object	625	* if the first object is freed, the pointers in the new object
593	* will point at garbage.	626	* will point at garbage.
594	*/	627	*/
595		628	void
596	void copy_object(object *op2, object *op)	629	object::copy_to (object *dst)
597	{	630	{
598	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);	631	dst->remove ();
599		632	*(object_copy *)dst = *this;
600	op->clear ();	633	dst->flag [FLAG_REMOVED] = true;
601
602	free_key_values (op);
603
604	*(object_special *)op = *(object_special *)op2;
605	op2->clone (op);
606
607	if (is_freed) SET_FLAG(op,FLAG_FREED);
608	if (is_removed) SET_FLAG(op,FLAG_REMOVED);
609
610	if (op2->speed < 0)
611	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
612		634
613	/* Copy over key_values, if any. */	635	/* Copy over key_values, if any. */
614	if (op2->key_values != NULL) {	636	if (key_values)
		637	{
615	key_value *tail = NULL;	638	key_value *tail = 0;
616	key_value *i;
617
618	op->key_values = NULL;	639	dst->key_values = 0;
619		640
620	for (i = op2->key_values; i != NULL; i = i->next)	641	for (key_value *i = key_values; i; i = i->next)
621	{	642	{
622	key_value *new_link = new key_value;	643	key_value *new_link = new key_value;
623		644
624	new_link->next = NULL;	645	new_link->next = 0;
625	new_link->key = i->key;	646	new_link->key = i->key;
626	new_link->value = i->value;	647	new_link->value = i->value;
627		648
628	/* Try and be clever here, too. */	649	/* Try and be clever here, too. */
629	if (op->key_values == NULL)	650	if (!dst->key_values)
630	{	651	{
631	op->key_values = new_link;	652	dst->key_values = new_link;
632	tail = new_link;	653	tail = new_link;
633	}	654	}
634	else	655	else
635	{	656	{
636	tail->next = new_link;	657	tail->next = new_link;
637	tail = new_link;	658	tail = new_link;
638	}	659	}
639	}	660	}
640	}	661	}
641		662
642	update_ob_speed (op);	663	dst->activate ();
643	}	664	}
644		665
645	/*	666	void
646	* expand_objects() allocates more objects for the list of unused objects.	667	object::instantiate ()
647	* It is called from get_object() if the unused list is empty.	668	{
		669	if (!uuid.seq) // HACK
		670	uuid = UUID::gen ();
		671
		672	// TODO: unclean state changes, should not be done in copy_to AND instantiate
		673	if (flag [FLAG_RANDOM_SPEED] && speed)
		674	speed_left = - speed - rndm (); // TODO animation
		675	else
		676	speed_left = -1.;
		677
		678	/* copy the body_info to the body_used - this is only really
		679	* need for monsters, but doesn't hurt to do it for everything.
		680	* by doing so, when a monster is created, it has good starting
		681	* values for the body_used info, so when items are created
		682	* for it, they can be properly equipped.
648	*/	683	*/
		684	for (int i = NUM_BODY_LOCATIONS; i--; )
		685	slot[i].used = slot[i].info;
649		686
650	void expand_objects(void) {	687	attachable::instantiate ();
651	int i;
652	object *obj;
653	obj = new object [OBJ_EXPAND];
654
655	free_objects=obj;
656	obj[0].prev=NULL;
657	obj[0].next= &obj[1],
658	SET_FLAG(&(obj[0]), FLAG_REMOVED);
659	SET_FLAG(&(obj[0]), FLAG_FREED);
660
661	for(i=1;i<OBJ_EXPAND-1;i++) {
662	obj[i].next= &obj[i+1],
663	obj[i].prev= &obj[i-1],
664	SET_FLAG(&(obj[i]), FLAG_REMOVED);
665	SET_FLAG(&(obj[i]), FLAG_FREED);
666	}
667	obj[OBJ_EXPAND-1].prev= &obj[OBJ_EXPAND-2],
668	obj[OBJ_EXPAND-1].next=NULL,
669	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_REMOVED);
670	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_FREED);
671
672	nrofallocobjects += OBJ_EXPAND;
673	nroffreeobjects += OBJ_EXPAND;
674	}	688	}
675		689
676	/*
677	* get_object() grabs an object from the list of unused objects, makes
678	* sure it is initialised, and returns it.
679	* If there are no free objects, expand_objects() is called to get more.
680	*/
681
682	object *get_object(void)
683	{
684	object *op;	690	object *
		691	object::clone ()
		692	{
		693	object *neu = create ();
		694	copy_to (neu);
685		695
686	if(free_objects==NULL)	696	// TODO: unclean state changes, should not be done in clone AND instantiate
687	expand_objects();	697	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
		698	neu->speed_left = - neu->speed - rndm (); // TODO animation
688		699
689	op = free_objects;	700	neu->map = map; // not copied by copy_to
690
691	if (!QUERY_FLAG (op, FLAG_FREED))
692	LOG(llevError,"Fatal: Getting busy object.\n");
693
694	free_objects = op->next;
695
696	if (free_objects != NULL)
697	free_objects->prev = NULL;
698
699	op->count= ++ob_count;
700	op->name=NULL;
701	op->name_pl=NULL;
702	op->title=NULL;
703	op->race=NULL;
704	op->slaying=NULL;
705	op->skill = NULL;
706	op->lore=NULL;
707	op->msg=NULL;
708	op->materialname=NULL;
709	op->next=objects;
710	op->prev=NULL;
711	op->active_next = NULL;
712	op->active_prev = NULL;
713	if(objects!=NULL)
714	objects->prev=op;
715	objects=op;
716	clear_object(op);
717	SET_FLAG(op,FLAG_REMOVED);
718	nroffreeobjects--;
719	return op;	701	return neu;
720	}	702	}
721		703
722	/*	704	/*
723	* If an object with the IS_TURNABLE() flag needs to be turned due	705	* If an object with the IS_TURNABLE() flag needs to be turned due
724	* to the closest player being on the other side, this function can	706	* to the closest player being on the other side, this function can
725	* be called to update the face variable, _and_ how it looks on the map.	707	* be called to update the face variable, _and_ how it looks on the map.
726	*/	708	*/
727		709	void
728	void update_turn_face(object *op) {	710	update_turn_face (object *op)
729	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	711	{
		712	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
730	return;	713	return;
		714
731	SET_ANIMATION(op, op->direction);	715	SET_ANIMATION (op, op->direction);
732	update_object(op,UP_OBJ_FACE);	716	update_object (op, UP_OBJ_FACE);
733	}	717	}
734		718
735	/*	719	/*
736	* Updates the speed of an object. If the speed changes from 0 to another	720	* Updates the speed of an object. If the speed changes from 0 to another
737	* value, or vice versa, then add/remove the object from the active list.	721	* value, or vice versa, then add/remove the object from the active list.
738	* This function needs to be called whenever the speed of an object changes.	722	* This function needs to be called whenever the speed of an object changes.
739	*/	723	*/
		724	void
		725	object::set_speed (float speed)
		726	{
		727	this->speed = speed;
740		728
741	void update_ob_speed(object *op) {	729	if (has_active_speed ())
742	extern int arch_init;	730	activate ();
743
744	/* No reason putting the archetypes objects on the speed list,
745	* since they never really need to be updated.
746	*/
747
748	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
749	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);
750	#ifdef MANY_CORES
751	abort();
752	#else
753	op->speed = 0;
754	#endif
755	}
756	if (arch_init) {
757	return;
758	}
759	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
760	/* If already on active list, don't do anything */
761	if (op->active_next || op->active_prev || op==active_objects)
762	return;
763
764	/* process_events() expects us to insert the object at the beginning
765	* of the list. */
766	op->active_next = active_objects;
767	if (op->active_next!=NULL)
768	op->active_next->active_prev = op;
769	active_objects = op;
770	}
771	else {	731	else
772	/* If not on the active list, nothing needs to be done */	732	deactivate ();
773	if (!op->active_next && !op->active_prev && op!=active_objects)
774	return;
775
776	if (op->active_prev==NULL) {
777	active_objects = op->active_next;
778	if (op->active_next!=NULL)
779	op->active_next->active_prev = NULL;
780	}
781	else {
782	op->active_prev->active_next = op->active_next;
783	if (op->active_next)
784	op->active_next->active_prev = op->active_prev;
785	}
786	op->active_next = NULL;
787	op->active_prev = NULL;
788	}
789	}	733	}
790		734
791	/* This function removes object 'op' from the list of active
792	* objects.
793	* This should only be used for style maps or other such
794	* reference maps where you don't want an object that isn't
795	* in play chewing up cpu time getting processed.
796	* The reverse of this is to call update_ob_speed, which
797	* will do the right thing based on the speed of the object.
798	*/
799	void remove_from_active_list(object *op)
800	{
801	/* If not on the active list, nothing needs to be done */
802	if (!op->active_next && !op->active_prev && op!=active_objects)
803	return;
804
805	if (op->active_prev==NULL) {
806	active_objects = op->active_next;
807	if (op->active_next!=NULL)
808	op->active_next->active_prev = NULL;
809	}
810	else {
811	op->active_prev->active_next = op->active_next;
812	if (op->active_next)
813	op->active_next->active_prev = op->active_prev;
814	}
815	op->active_next = NULL;
816	op->active_prev = NULL;
817	}
818
819	/*	735	/*
820	* update_object() updates the array which represents the map.	736	* update_object() updates the the map.
821	* It takes into account invisible objects (and represent squares covered	737	* It takes into account invisible objects (and represent squares covered
822	* by invisible objects by whatever is below them (unless it's another	738	* by invisible objects by whatever is below them (unless it's another
823	* invisible object, etc...)	739	* invisible object, etc...)
824	* If the object being updated is beneath a player, the look-window	740	* If the object being updated is beneath a player, the look-window
825	* of that player is updated (this might be a suboptimal way of	741	* of that player is updated (this might be a suboptimal way of
826	* updating that window, though, since update_object() is called _often_)	742	* updating that window, though, since update_object() is called _often_)
827	*	743	*
828	* action is a hint of what the caller believes need to be done.	744	* action is a hint of what the caller believes need to be done.
829	* For example, if the only thing that has changed is the face (due to
830	* an animation), we don't need to call update_position until that actually
831	* comes into view of a player. OTOH, many other things, like addition/removal
832	* of walls or living creatures may need us to update the flags now.
833	* current action are:	745	* current action are:
834	* UP_OBJ_INSERT: op was inserted	746	* UP_OBJ_INSERT: op was inserted
835	* UP_OBJ_REMOVE: op was removed	747	* UP_OBJ_REMOVE: op was removed
836	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	748	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
837	* as that is easier than trying to look at what may have changed.	749	* as that is easier than trying to look at what may have changed.
838	* UP_OBJ_FACE: only the objects face has changed.	750	* UP_OBJ_FACE: only the objects face has changed.
839	*/	751	*/
840		752	void
841	void update_object(object *op, int action) {	753	update_object (object *op, int action)
842	int update_now=0, flags;	754	{
843	MoveType move_on, move_off, move_block, move_slow;	755	if (!op)
844		756	{
845	if (op == NULL) {
846	/* this should never happen */	757	/* this should never happen */
847	LOG(llevDebug,"update_object() called for NULL object.\n");	758	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
848	return;	759	return;
849	}
850		760	}
851	if(op->env!=NULL) {	761
		762	if (!op->is_on_map ())
		763	{
852	/* Animation is currently handled by client, so nothing	764	/* Animation is currently handled by client, so nothing
853	* to do in this case.	765	* to do in this case.
854	*/	766	*/
855	return;	767	return;
856	}
857
858	/* If the map is saving, don't do anything as everything is
859	* going to get freed anyways.
860	*/
861	if (!op->map || op->map->in_memory == MAP_SAVING) return;
862		768	}
		769
863	/* make sure the object is within map boundaries */	770	/* make sure the object is within map boundaries */
864	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	771	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
865	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	772	{
866	LOG(llevError,"update_object() called for object out of map!\n");	773	LOG (llevError, "update_object() called for object out of map!\n");
867	#ifdef MANY_CORES	774	#ifdef MANY_CORES
868	abort();	775	abort ();
869	#endif	776	#endif
870	return;	777	return;
871	}
872		778	}
873	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
874	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
875	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
876	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
877	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
878	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
879		779
		780	mapspace &m = op->ms ();
		781
		782	if (!(m.flags_ & P_UPTODATE))
		783	/* nop */;
880	if (action == UP_OBJ_INSERT) {	784	else if (action == UP_OBJ_INSERT)
		785	{
		786	#if 0
		787	// this is likely overkill, TODO: revisit (schmorp)
881	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	788	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
882	update_now=1;	789	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
883		790	|| (op->is_player () && !(m.flags_ & P_PLAYER))
884	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	791	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
885	update_now=1;	792	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
886		793	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
887	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	794	|| (m.move_on | op->move_on ) != m.move_on
888	update_now=1;
889
890	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
891	update_now=1;
892
893	if ((move_on | op->move_on) != move_on) update_now=1;
894	if ((move_off | op->move_off) != move_off) update_now=1;	795	|| (m.move_off | op->move_off ) != m.move_off
		796	|| (m.move_slow | op->move_slow) != m.move_slow
895	/* This isn't perfect, but I don't expect a lot of objects to	797	/* This isn't perfect, but I don't expect a lot of objects to
896	* to have move_allow right now.	798	* have move_allow right now.
897	*/	799	*/
898	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	800	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
899	update_now=1;	801	m.invalidate ();
900	if ((move_slow | op->move_slow) != move_slow) update_now=1;	802	#else
		803	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		804	m.invalidate ();
		805	#endif
901	}	806	}
902	/* if the object is being removed, we can't make intelligent	807	/* if the object is being removed, we can't make intelligent
903	* decisions, because remove_ob can't really pass the object	808	* decisions, because remove_ob can't really pass the object
904	* that is being removed.	809	* that is being removed.
905	*/	810	*/
906	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	811	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
907	update_now=1;	812	m.invalidate ();
908	} else if (action == UP_OBJ_FACE) {	813	else if (action == UP_OBJ_FACE)
909	/* Nothing to do for that case */	814	/* Nothing to do for that case */ ;
910	}
911	else {	815	else
912	LOG(llevError,"update_object called with invalid action: %d\n", action);	816	LOG (llevError, "update_object called with invalid action: %d\n", action);
913	}
914		817
915	if (update_now) {
916	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
917	update_position(op->map, op->x, op->y);
918	}
919
920	if(op->more!=NULL)	818	if (op->more)
921	update_object(op->more, action);	819	update_object (op->more, action);
922	}	820	}
923		821
		822	object::object ()
		823	{
		824	this->set_flag (FLAG_REMOVED);
924		825
925	/*	826	//expmul = 1.0; declared const for the time being
926	* free_object() frees everything allocated by an object, removes	827	face = blank_face;
927	* it from the list of used objects, and puts it on the list of	828	material = MATERIAL_NULL;
928	* free objects. The IS_FREED() flag is set in the object.
929	* The object must have been removed by remove_ob() first for
930	* this function to succeed.
931	*
932	* If free_inventory is set, free inventory as well. Else drop items in
933	* inventory to the ground.
934	*/
935
936	void free_object(object *ob) {
937	free_object2(ob, 0);
938	}	829	}
939	void free_object2(object *ob, int free_inventory) {
940	object *tmp,*op;
941		830
942	ob->clear ();	831	object::~object ()
		832	{
		833	unlink ();
943		834
944	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	835	free_key_values (this);
945	LOG(llevDebug,"Free object called with non removed object\n");	836	}
946	dump_object(ob);	837
947	#ifdef MANY_CORES	838	void object::link ()
948	abort();	839	{
949	#endif	840	assert (!index);//D
950	}	841	uuid = UUID::gen ();
951	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	842
952	LOG(llevMonster,"Warning: tried to free friendly object.\n");	843	refcnt_inc ();
953	remove_friendly_object(ob);	844	objects.insert (this);
954	}	845
955	if(QUERY_FLAG(ob,FLAG_FREED)) {	846	++create_count;
956	dump_object(ob);	847
957	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	848	}
		849
		850	void object::unlink ()
		851	{
		852	if (!index)
958	return;	853	return;
		854
		855	++destroy_count;
		856
		857	objects.erase (this);
		858	refcnt_dec ();
		859	}
		860
		861	void
		862	object::activate ()
		863	{
		864	/* If already on active list, don't do anything */
		865	if (active)
		866	return;
		867
		868	if (has_active_speed ())
959	}	869	{
960	if(ob->more!=NULL) {	870	if (flag [FLAG_FREED])
961	free_object2(ob->more, free_inventory);	871	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
962	ob->more=NULL;	872
		873	actives.insert (this);
		874	}
		875	}
		876
		877	void
		878	object::activate_recursive ()
		879	{
		880	activate ();
		881
		882	for (object *op = inv; op; op = op->below)
		883	op->activate_recursive ();
		884	}
		885
		886	/* This function removes object 'op' from the list of active
		887	* objects.
		888	* This should only be used for style maps or other such
		889	* reference maps where you don't want an object that isn't
		890	* in play chewing up cpu time getting processed.
		891	* The reverse of this is to call update_ob_speed, which
		892	* will do the right thing based on the speed of the object.
		893	*/
		894	void
		895	object::deactivate ()
		896	{
		897	/* If not on the active list, nothing needs to be done */
		898	if (!active)
		899	return;
		900
		901	actives.erase (this);
		902	}
		903
		904	void
		905	object::deactivate_recursive ()
		906	{
		907	for (object *op = inv; op; op = op->below)
		908	op->deactivate_recursive ();
		909
		910	deactivate ();
		911	}
		912
		913	void
		914	object::set_flag_inv (int flag, int value)
		915	{
		916	for (object *op = inv; op; op = op->below)
963	}	917	{
964	if (ob->inv) {	918	op->flag [flag] = value;
		919	op->set_flag_inv (flag, value);
		920	}
		921	}
		922
		923	/*
		924	* Remove and free all objects in the inventory of the given object.
		925	* object.c ?
		926	*/
		927	void
		928	object::destroy_inv (bool drop_to_ground)
		929	{
		930	// need to check first, because the checks below might segfault
		931	// as we might be on an invalid mapspace and crossfire code
		932	// is too buggy to ensure that the inventory is empty.
		933	// corollary: if you create arrows etc. with stuff in its inventory,
		934	// cf will crash below with off-map x and y
		935	if (!inv)
		936	return;
		937
965	/* Only if the space blocks everything do we not process -	938	/* Only if the space blocks everything do we not process -
966	* if some form of movemnt is allowed, let objects	939	* if some form of movement is allowed, let objects
967	* drop on that space.	940	* drop on that space.
968	*/	941	*/
969	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	942	if (!drop_to_ground
970	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	943	|| !map
		944	|| map->in_memory != MAP_ACTIVE
		945	|| map->no_drop
		946	|| ms ().move_block == MOVE_ALL)
		947	{
		948	while (inv)
		949	inv->destroy ();
		950	}
		951	else
		952	{ /* Put objects in inventory onto this space */
		953	while (inv)
971	{	954	{
972	op=ob->inv;	955	object *op = inv;
973	while(op!=NULL) {	956
974	tmp=op->below;	957	if (op->flag [FLAG_STARTEQUIP]
975	remove_ob(op);	958	|| op->flag [FLAG_NO_DROP]
976	free_object2(op, free_inventory);	959	|| op->type == RUNE
977	op=tmp;	960	|| op->type == TRAP
978	}	961	|| op->flag [FLAG_IS_A_TEMPLATE]
		962	|| op->flag [FLAG_DESTROY_ON_DEATH])
		963	op->destroy ();
		964	else
		965	map->insert (op, x, y);
979	}	966	}
980	else { /* Put objects in inventory onto this space */	967	}
981	op=ob->inv;	968	}
982	while(op!=NULL) {	969
983	tmp=op->below;	970	/*
984	remove_ob(op);	971	* Remove and free all objects in the inventory of the given object.
985	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||	972	* Unlike destroy_inv, this assumes the *this is destroyed as well
986	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))	973	* well, so we can (and have to!) take shortcuts.
987	free_object(op);	974	*/
988	else {	975	void
989	op->x=ob->x;	976	object::destroy_inv_fast ()
990	op->y=ob->y;	977	{
991	insert_ob_in_map(op,ob->map,NULL,0); /* Insert in same map as the envir */	978	while (object *op = inv)
992	}
993	op=tmp;
994	}
995	}
996	}	979	{
997	/* Remove object from the active list */	980	// remove from object the fast way
998	ob->speed = 0;	981	op->flag [FLAG_REMOVED] = true;
999	update_ob_speed(ob);	982	op->env = 0;
		983	if ((inv = inv->below))
		984	inv->above = 0;
1000		985
1001	SET_FLAG(ob, FLAG_FREED);	986	// then destroy
1002	ob->count = 0;	987	op->destroy ();
		988	}
		989	}
1003		990
1004	/* Remove this object from the list of used objects */	991	void
1005	if(ob->prev==NULL) {	992	object::freelist_free (int count)
1006	objects=ob->next;	993	{
1007	if(objects!=NULL)	994	while (count-- && freelist)
1008	objects->prev=NULL;
1009	}	995	{
1010	else {	996	freelist_item *next = freelist->next;
1011	ob->prev->next=ob->next;	997	// count is being "destroyed"
1012	if(ob->next!=NULL)	998
1013	ob->next->prev=ob->prev;	999	sfree ((char *)freelist, sizeof (object));
		1000
		1001	freelist = next;
		1002	--free_count;
		1003	}
		1004	}
		1005
		1006	object *
		1007	object::create ()
		1008	{
		1009	object *op;
		1010
		1011	if (freelist)
1014	}	1012	{
1015		1013	freelist_item li = *freelist;
1016	ob->name = 0;	1014	memset (freelist, 0, sizeof (object));
1017	ob->name_pl = 0;
1018	ob->title = 0;
1019	ob->race = 0;
1020	ob->slaying = 0;
1021	ob->skill = 0;
1022	ob->lore = 0;
1023	ob->msg = 0;
1024	ob->materialname = 0;
1025		1015
1026	free_key_values (ob);	1016	op = new (freelist) object;
		1017	op->count = li.count;
1027		1018
1028	/* Now link it with the free_objects list: */	1019	freelist = li.next;
1029	ob->prev=NULL;	1020	--free_count;
1030	ob->next=free_objects;	1021	}
		1022	else
		1023	{
		1024	void *ni = salloc0<char> (sizeof (object));
1031		1025
1032	if(free_objects!=NULL)	1026	op = new(ni) object;
1033	free_objects->prev=ob;
1034		1027
1035	free_objects=ob;	1028	op->count = ++object_count;
1036	nroffreeobjects++;	1029	}
1037	}
1038		1030
1039	/*	1031	op->link ();
1040	* count_free() returns the number of objects on the list of free objects.
1041	*/
1042		1032
1043	int count_free ()
1044	{
1045	int i=0;
1046	object *tmp=free_objects;
1047	while(tmp!=NULL)
1048	tmp=tmp->next, i++;
1049	return i;	1033	return op;
1050	}	1034	}
1051		1035
1052	/*	1036	void
1053	* count_used() returns the number of objects on the list of used objects.	1037	object::do_delete ()
1054	*/
1055
1056	int count_used()
1057	{	1038	{
1058	int i=0;	1039	uint32_t count = this->count;
1059	object *tmp=objects;
1060	while(tmp!=NULL)
1061	tmp=tmp->next, i++;
1062	return i;
1063	}
1064		1040
1065	/*	1041	this->~object ();
1066	* count_active() returns the number of objects on the list of active objects.
1067	*/
1068		1042
1069	int count_active()	1043	freelist_item *li = (freelist_item *)this;
1070	{	1044	li->next = freelist;
1071	int i=0;	1045	li->count = count;
1072	object *tmp=active_objects;
1073	while(tmp!=NULL)
1074	tmp=tmp->active_next, i++;
1075	return i;
1076	}
1077		1046
1078	/*	1047	freelist = li;
1079	* sub_weight() recursively (outwards) subtracts a number from the	1048	++free_count;
1080	* weight of an object (and what is carried by it's environment(s)).	1049	}
1081	*/
1082		1050
1083	void sub_weight (object *op, signed long weight) {	1051	static struct freed_map : maptile
1084	while (op != NULL) {	1052	{
1085	if (op->type == CONTAINER) {	1053	freed_map ()
1086	weight=(signed long)(weight*(100-op->stats.Str)/100);	1054	: maptile (3, 3)
1087	}	1055	{
1088	op->carrying-=weight;	1056	path = "<freed objects map>";
1089	op = op->env;	1057	name = "/internal/freed_objects_map";
		1058	no_drop = 1;
		1059	no_reset = 1;
		1060
		1061	in_memory = MAP_ACTIVE;
1090	}	1062	}
1091	}
1092		1063
1093	/* remove_ob(op):	1064	~freed_map ()
		1065	{
		1066	destroy ();
		1067	}
		1068	} freed_map; // freed objects are moved here to avoid crashes
		1069
		1070	void
		1071	object::do_destroy ()
		1072	{
		1073	if (flag [FLAG_IS_LINKED])
		1074	remove_link ();
		1075
		1076	if (flag [FLAG_FRIENDLY])
		1077	remove_friendly_object (this);
		1078
		1079	remove ();
		1080
		1081	attachable::do_destroy ();
		1082
		1083	deactivate ();
		1084	unlink ();
		1085
		1086	flag [FLAG_FREED] = 1;
		1087
		1088	// hack to ensure that freed objects still have a valid map
		1089	map = &freed_map;
		1090	x = 1;
		1091	y = 1;
		1092
		1093	if (more)
		1094	{
		1095	more->destroy ();
		1096	more = 0;
		1097	}
		1098
		1099	head = 0;
		1100
		1101	// clear those pointers that likely might cause circular references
		1102	owner = 0;
		1103	enemy = 0;
		1104	attacked_by = 0;
		1105	current_weapon = 0;
		1106	}
		1107
		1108	void
		1109	object::destroy ()
		1110	{
		1111	if (destroyed ())
		1112	return;
		1113
		1114	if (!is_head () && !head->destroyed ())
		1115	{
		1116	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1117	head->destroy ();
		1118	return;
		1119	}
		1120
		1121	destroy_inv_fast ();
		1122
		1123	if (is_head ())
		1124	if (sound_destroy)
		1125	play_sound (sound_destroy);
		1126	else if (flag [FLAG_MONSTER])
		1127	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1128
		1129	attachable::destroy ();
		1130	}
		1131
		1132	/* op->remove ():
1094	* This function removes the object op from the linked list of objects	1133	* This function removes the object op from the linked list of objects
1095	* which it is currently tied to. When this function is done, the	1134	* which it is currently tied to. When this function is done, the
1096	* object will have no environment. If the object previously had an	1135	* object will have no environment. If the object previously had an
1097	* environment, the x and y coordinates will be updated to	1136	* environment, the x and y coordinates will be updated to
1098	* the previous environment.	1137	* the previous environment.
1099	* Beware: This function is called from the editor as well!
1100	*/	1138	*/
		1139	void
		1140	object::do_remove ()
		1141	{
		1142	if (flag [FLAG_REMOVED])
		1143	return;
1101		1144
1102	void remove_ob(object *op) {	1145	INVOKE_OBJECT (REMOVE, this);
1103	object *tmp,*last=NULL;
1104	object *otmp;
1105	tag_t tag;
1106	int check_walk_off;
1107	mapstruct *m;
1108	sint16 x,y;
1109
1110		1146
1111	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1147	flag [FLAG_REMOVED] = true;
1112	dump_object(op);
1113	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1114		1148
1115	/* Changed it to always dump core in this case. As has been learned	1149	if (more)
1116	* in the past, trying to recover from errors almost always	1150	more->remove ();
1117	* make things worse, and this is a real error here - something
1118	* that should not happen.
1119	* Yes, if this was a mission critical app, trying to do something
1120	* to recover may make sense, but that is because failure of the app
1121	* may have other disastrous problems. Cf runs out of a script
1122	* so is easily enough restarted without any real problems.
1123	* MSW 2001-07-01
1124	*/
1125	abort();
1126	}
1127	if(op->more!=NULL)
1128	remove_ob(op->more);
1129		1151
1130	SET_FLAG(op, FLAG_REMOVED);
1131
1132	/*	1152	/*
1133	* In this case, the object to be removed is in someones	1153	* In this case, the object to be removed is in someones
1134	* inventory.	1154	* inventory.
1135	*/	1155	*/
1136	if(op->env!=NULL) {	1156	if (env)
1137	if(op->nrof)	1157	{
1138	sub_weight(op->env, op->weight*op->nrof);	1158	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1139	else	1159	if (object *pl = visible_to ())
1140	sub_weight(op->env, op->weight+op->carrying);	1160	esrv_del_item (pl->contr, count);
		1161	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1141		1162
1142	/* NO_FIX_PLAYER is set when a great many changes are being	1163	adjust_weight (env, total_weight (), 0);
1143	* made to players inventory. If set, avoiding the call
1144	* to save cpu time.
1145	*/
1146	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&
1147	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1148	fix_player(otmp);
1149		1164
1150	if(op->above!=NULL)	1165	object *pl = in_player ();
1151	op->above->below=op->below;
1152	else
1153	op->env->inv=op->below;
1154		1166
1155	if(op->below!=NULL)
1156	op->below->above=op->above;
1157
1158	/* we set up values so that it could be inserted into	1167	/* we set up values so that it could be inserted into
1159	* the map, but we don't actually do that - it is up	1168	* the map, but we don't actually do that - it is up
1160	* to the caller to decide what we want to do.	1169	* to the caller to decide what we want to do.
1161	*/	1170	*/
1162	op->x=op->env->x,op->y=op->env->y;	1171	map = env->map;
1163	op->map=op->env->map;	1172	x = env->x;
1164	op->above=NULL,op->below=NULL;	1173	y = env->y;
1165	op->env=NULL;	1174
		1175	// make sure cmov optimisation is applicable
		1176	*(above ? &above->below : &env->inv) = below;
		1177	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1178
		1179	above = 0;
		1180	below = 0;
		1181	env = 0;
		1182
		1183	if (pl && pl->is_player ())
		1184	{
		1185	if (expect_false (pl->contr->combat_ob == this))
		1186	{
		1187	pl->apply (pl->contr->combat_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1188	pl->contr->combat_ob = 0;
		1189	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
		1190	}
		1191
		1192	if (expect_false (pl->contr->ranged_ob == this))
		1193	{
		1194	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1195	pl->contr->ranged_ob = 0;
		1196	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1197	}
		1198
		1199	pl->contr->queue_stats_update ();
		1200
		1201	if (expect_false (glow_radius) && pl->is_on_map ())
		1202	update_all_los (pl->map, pl->x, pl->y);
		1203	}
		1204	}
		1205	else if (map)
		1206	{
		1207	map->dirty = true;
		1208	mapspace &ms = this->ms ();
		1209
		1210	if (object *pl = ms.player ())
		1211	{
		1212	if (is_player ())
		1213	{
		1214	if (!flag [FLAG_WIZPASS])
		1215	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1216
		1217	// leaving a spot always closes any open container on the ground
		1218	if (container && !container->env)
		1219	// this causes spurious floorbox updates, but it ensures
		1220	// that the CLOSE event is being sent.
		1221	close_container ();
		1222
		1223	--map->players;
		1224	map->touch ();
		1225	}
		1226	else if (pl->container_ () == this)
		1227	{
		1228	// removing a container should close it
		1229	close_container ();
		1230	}
		1231	else
		1232	esrv_del_item (pl->contr, count);
		1233	}
		1234
		1235	/* link the object above us */
		1236	// re-link, make sure compiler can easily use cmove
		1237	*(above ? &above->below : &ms.top) = below;
		1238	*(below ? &below->above : &ms.bot) = above;
		1239
		1240	above = 0;
		1241	below = 0;
		1242
		1243	ms.invalidate ();
		1244
		1245	if (map->in_memory == MAP_SAVING)
1166	return;	1246	return;
1167	}
1168		1247
1169	/* If we get here, we are removing it from a map */	1248	int check_walk_off = !flag [FLAG_NO_APPLY];
1170	if (op->map == NULL) return;
1171		1249
1172	x = op->x;	1250	if (object *pl = ms.player ())
1173	y = op->y;
1174	m = get_map_from_coord(op->map, &x, &y);
1175
1176	if (!m) {
1177	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1178	op->map->path, op->x, op->y);
1179	/* in old days, we used to set x and y to 0 and continue.
1180	* it seems if we get into this case, something is probablye
1181	* screwed up and should be fixed.
1182	*/
1183	abort();
1184	}
1185	if (op->map != m) {
1186	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1187	op->map->path, m->path, op->x, op->y, x, y);
1188	}
1189
1190	/* Re did the following section of code - it looks like it had
1191	* lots of logic for things we no longer care about
1192	*/
1193
1194	/* link the object above us */
1195	if (op->above)
1196	op->above->below=op->below;
1197	else
1198	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1199
1200	/* Relink the object below us, if there is one */
1201	if(op->below) {
1202	op->below->above=op->above;
1203	} else {
1204	/* Nothing below, which means we need to relink map object for this space
1205	* use translated coordinates in case some oddness with map tiling is
1206	* evident
1207	*/
1208	if(GET_MAP_OB(m,x,y)!=op) {
1209	dump_object(op);
1210	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);
1211	dump_object(GET_MAP_OB(m,x,y));
1212	LOG(llevError,"%s\n",errmsg);
1213	}	1251	{
1214	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1252	if (pl->container_ () == this)
1215	}
1216	op->above=NULL;
1217	op->below=NULL;
1218
1219	if (op->map->in_memory == MAP_SAVING)
1220	return;
1221
1222	tag = op->count;
1223	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1224	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1225	/* No point updating the players look faces if he is the object
1226	* being removed.
1227	*/
1228
1229	if(tmp->type==PLAYER && tmp!=op) {
1230	/* If a container that the player is currently using somehow gets	1253	/* If a container that the player is currently using somehow gets
1231	* removed (most likely destroyed), update the player view	1254	* removed (most likely destroyed), update the player view
1232	* appropriately.	1255	* appropriately.
1233	*/	1256	*/
1234	if (tmp->container==op) {	1257	pl->close_container ();
1235	CLEAR_FLAG(op, FLAG_APPLIED);	1258
1236	tmp->container=NULL;	1259	//TODO: the floorbox prev/next might need updating
1237	}	1260	//esrv_del_item (pl->contr, count);
1238	tmp->contr->socket.update_look=1;	1261	//TODO: update floorbox to preserve ordering
		1262	if (pl->contr->ns)
		1263	pl->contr->ns->floorbox_update ();
1239	}	1264	}
		1265
		1266	if (check_walk_off)
		1267	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1268	{
		1269	above = tmp->above;
		1270
		1271	/* No point updating the players look faces if he is the object
		1272	* being removed.
		1273	*/
		1274
1240	/* See if player moving off should effect something */	1275	/* See if object moving off should effect something */
1241	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1276	if ((move_type & tmp->move_off)
1242	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1277	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1243
1244	move_apply(tmp, op, NULL);	1278	move_apply (tmp, this, 0);
1245	if (was_destroyed (op, tag)) {
1246	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1247	"leaving object\n", &tmp->name, &tmp->arch->name);
1248	}	1279	}
1249	}
1250		1280
1251	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1281	if (affects_los ())
1252
1253	if(tmp->above == tmp)
1254	tmp->above = NULL;
1255	last=tmp;
1256	}
1257	/* last == NULL of there are no objects on this space */
1258	if (last==NULL) {
1259	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1260	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1261	* those out anyways, and if there are any flags set right now, they won't
1262	* be correct anyways.
1263	*/
1264	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1265	update_position(op->map, op->x, op->y);
1266	}
1267	else
1268	update_object(last, UP_OBJ_REMOVE);
1269
1270	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1271	update_all_los(op->map, op->x, op->y);	1282	update_all_los (map, x, y);
1272		1283	}
1273	}	1284	}
1274		1285
1275	/*	1286	/*
1276	* merge_ob(op,top):	1287	* merge_ob(op,top):
1277	*	1288	*
1278	* This function goes through all objects below and including top, and	1289	* This function goes through all objects below and including top, and
1279	* merges op to the first matching object.	1290	* merges op to the first matching object.
1280	* If top is NULL, it is calculated.	1291	* If top is NULL, it is calculated.
1281	* Returns pointer to object if it succeded in the merge, otherwise NULL	1292	* Returns pointer to object if it succeded in the merge, otherwise NULL
1282	*/	1293	*/
1283		1294	object *
1284	object *merge_ob(object *op, object *top) {	1295	merge_ob (object *op, object *top)
		1296	{
1285	if(!op->nrof)	1297	if (!op->nrof)
1286	return 0;	1298	return 0;
1287	if(top==NULL)	1299
		1300	if (!top)
1288	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1301	for (top = op; top && top->above; top = top->above)
		1302	;
		1303
1289	for(;top!=NULL;top=top->below) {	1304	for (; top; top = top->below)
1290	if(top==op)	1305	if (object::can_merge (op, top))
1291	continue;
1292	if (CAN_MERGE(op,top))
1293	{	1306	{
1294	top->nrof+=op->nrof;	1307	top->nrof += op->nrof;
1295	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1308
1296	op->weight = 0; /* Don't want any adjustements now */	1309	if (object *pl = top->visible_to ())
1297	remove_ob(op);	1310	esrv_update_item (UPD_NROF, pl, top);
1298	free_object(op);	1311
		1312	op->weight = 0; // cancel the addition above
		1313	op->carrying = 0; // must be 0 already
		1314
		1315	op->destroy ();
		1316
1299	return top;	1317	return top;
1300	}	1318	}
1301	}	1319
1302	return NULL;	1320	return 0;
1303	}	1321	}
1304		1322
		1323	void
		1324	object::expand_tail ()
		1325	{
		1326	if (more)
		1327	return;
		1328
		1329	object *prev = this;
		1330
		1331	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1332	{
		1333	object *op = at->instance ();
		1334
		1335	op->name = name;
		1336	op->name_pl = name_pl;
		1337	op->title = title;
		1338
		1339	op->head = this;
		1340	prev->more = op;
		1341
		1342	prev = op;
		1343	}
		1344	}
		1345
1305	/*	1346	/*
1306	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1347	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1307	* job preparing multi-part monsters	1348	* job preparing multi-part monsters.
1308	*/	1349	*/
		1350	object *
1309	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1351	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1310	object* tmp;	1352	{
1311	if (op->head)	1353	op->remove ();
1312	op=op->head;	1354
1313	for (tmp=op;tmp;tmp=tmp->more){	1355	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1356	{
1314	tmp->x=x+tmp->arch->clone.x;	1357	tmp->x = x + tmp->arch->x;
1315	tmp->y=y+tmp->arch->clone.y;	1358	tmp->y = y + tmp->arch->y;
1316	}	1359	}
		1360
1317	return insert_ob_in_map (op, m, originator, flag);	1361	return insert_ob_in_map (op, m, originator, flag);
1318	}	1362	}
1319		1363
1320	/*	1364	/*
1321	* insert_ob_in_map (op, map, originator, flag):	1365	* insert_ob_in_map (op, map, originator, flag):
1322	* This function inserts the object in the two-way linked list	1366	* This function inserts the object in the two-way linked list
…		…
1332	* Passing 0 for flag gives proper default values, so flag really only needs	1376	* Passing 0 for flag gives proper default values, so flag really only needs
1333	* to be set if special handling is needed.	1377	* to be set if special handling is needed.
1334	*	1378	*
1335	* Return value:	1379	* Return value:
1336	* new object if 'op' was merged with other object	1380	* new object if 'op' was merged with other object
1337	* NULL if 'op' was destroyed	1381	* NULL if there was an error (destroyed, blocked etc.)
1338	* just 'op' otherwise	1382	* just 'op' otherwise
1339	*/	1383	*/
1340		1384	object *
1341	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1385	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1342	{	1386	{
1343	object *tmp, *top, *floor=NULL;	1387	op->remove ();
1344	sint16 x,y;
1345		1388
1346	if (QUERY_FLAG (op, FLAG_FREED)) {	1389	if (m == &freed_map)//D TODO: remove soon
1347	LOG (llevError, "Trying to insert freed object!\n");	1390	{//D
1348	return NULL;	1391	LOG (llevError | logBacktrace, "tries to insret object on freed objects map: %s", op->debug_desc ());//D
		1392	}//D
		1393
		1394	/* Ideally, the caller figures this out. However, it complicates a lot
		1395	* of areas of callers (eg, anything that uses find_free_spot would now
		1396	* need extra work
		1397	*/
		1398	maptile *newmap = m;
		1399	if (!xy_normalise (newmap, op->x, op->y))
1349	}	1400	{
1350	if(m==NULL) {	1401	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
1351	dump_object(op);
1352	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1353	return op;	1402	return 0;
1354	}	1403	}
1355	if(out_of_map(m,op->x,op->y)) {	1404
1356	dump_object(op);	1405	if (object *more = op->more)
1357	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1406	if (!insert_ob_in_map (more, m, originator, flag))
1358	#ifdef MANY_CORES
1359	/* Better to catch this here, as otherwise the next use of this object
1360	* is likely to cause a crash. Better to find out where it is getting
1361	* improperly inserted.
1362	*/
1363	abort();
1364	#endif
1365	return op;	1407	return 0;
1366	}
1367	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1368	dump_object(op);
1369	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1370	return op;
1371	}
1372	if(op->more!=NULL) {
1373	/* The part may be on a different map. */
1374		1408
1375	object *more = op->more;	1409	op->flag [FLAG_REMOVED] = false;
		1410	op->env = 0;
		1411	op->map = newmap;
1376		1412
1377	/* We really need the caller to normalize coordinates - if	1413	mapspace &ms = op->ms ();
1378	* we set the map, that doesn't work if the location is within	1414
1379	* a map and this is straddling an edge. So only if coordinate	1415	/* this has to be done after we translate the coordinates.
1380	* is clear wrong do we normalize it.	1416	*/
		1417	if (op->nrof && !(flag & INS_NO_MERGE))
		1418	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1419	if (object::can_merge (op, tmp))
1381	*/	1420	{
1382	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1421	// TODO: we actually want to update tmp, not op,
1383	more->map = get_map_from_coord(m, &more->x, &more->y);	1422	// but some caller surely breaks when we return tmp
1384	} else if (!more->map) {	1423	// from here :/
1385	/* For backwards compatibility - when not dealing with tiled maps,	1424	op->nrof += tmp->nrof;
1386	* more->map should always point to the parent.	1425	tmp->destroy ();
1387	*/
1388	more->map = m;
1389	}	1426	}
1390		1427
1391	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1428	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1392	if ( ! op->head)	1429	op->clr_flag (FLAG_INV_LOCKED);
1393	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1430
1394	return NULL;	1431	if (!op->flag [FLAG_ALIVE])
		1432	op->clr_flag (FLAG_NO_STEAL);
		1433
		1434	if (flag & INS_BELOW_ORIGINATOR)
		1435	{
		1436	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1437	{
		1438	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1439	abort ();
1395	}	1440	}
		1441
		1442	if (!originator->is_on_map ())
		1443	{
		1444	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1445	op->debug_desc (), originator->debug_desc ());
		1446	abort ();
		1447	}
		1448
		1449	op->above = originator;
		1450	op->below = originator->below;
		1451	originator->below = op;
		1452
		1453	*(op->below ? &op->below->above : &ms.bot) = op;
		1454	}
		1455	else
1396	}	1456	{
1397	CLEAR_FLAG(op,FLAG_REMOVED);	1457	object *floor = 0;
		1458	object *top = ms.top;
1398		1459
1399	/* Ideally, the caller figures this out. However, it complicates a lot	1460	/* If there are other objects, then */
1400	* of areas of callers (eg, anything that uses find_free_spot would now	1461	if (top)
1401	* need extra work	1462	{
1402	*/	1463	/*
1403	op->map=get_map_from_coord(m, &op->x, &op->y);	1464	* If there are multiple objects on this space, we do some trickier handling.
1404	x = op->x;	1465	* We've already dealt with merging if appropriate.
1405	y = op->y;	1466	* Generally, we want to put the new object on top. But if
		1467	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1468	* floor, we want to insert above that and no further.
		1469	* Also, if there are spell objects on this space, we stop processing
		1470	* once we get to them. This reduces the need to traverse over all of
		1471	* them when adding another one - this saves quite a bit of cpu time
		1472	* when lots of spells are cast in one area. Currently, it is presumed
		1473	* that flying non pickable objects are spell objects.
		1474	*/
		1475	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1476	{
		1477	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
		1478	floor = tmp;
1406		1479
1407	/* this has to be done after we translate the coordinates.	1480	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1408	*/	1481	{
1409	if(op->nrof && !(flag & INS_NO_MERGE)) {	1482	/* We insert above top, so we want this object below this */
1410	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1483	top = tmp->below;
1411	if (CAN_MERGE(op,tmp)) {	1484	break;
1412	op->nrof+=tmp->nrof;	1485	}
1413	remove_ob(tmp);	1486
1414	free_object(tmp);	1487	top = tmp;
1415	}	1488	}
1416	}
1417		1489
1418	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1490	/* We let update_position deal with figuring out what the space
1419	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1491	* looks like instead of lots of conditions here.
1420	if (!QUERY_FLAG(op, FLAG_ALIVE))	1492	* makes things faster, and effectively the same result.
1421	CLEAR_FLAG(op, FLAG_NO_STEAL);	1493	*/
1422		1494
1423	if (flag & INS_BELOW_ORIGINATOR) {	1495	/* Have object 'fall below' other objects that block view.
1424	if (originator->map != op->map || originator->x != op->x ||	1496	* Unless those objects are exits.
1425	originator->y != op->y) {	1497	* If INS_ON_TOP is used, don't do this processing
1426	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1498	* Need to find the object that in fact blocks view, otherwise
1427	abort();	1499	* stacking is a bit odd.
		1500	*/
		1501	if (!(flag & INS_ON_TOP)
		1502	&& ms.flags () & P_BLOCKSVIEW
		1503	&& (op->face && !faces [op->face].visibility))
		1504	{
		1505	object *last;
		1506
		1507	for (last = top; last != floor; last = last->below)
		1508	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
		1509	break;
		1510
		1511	/* Check to see if we found the object that blocks view,
		1512	* and make sure we have a below pointer for it so that
		1513	* we can get inserted below this one, which requires we
		1514	* set top to the object below us.
		1515	*/
		1516	if (last && last->below && last != floor)
		1517	top = last->below;
		1518	}
		1519	} /* If objects on this space */
		1520
		1521	if (flag & INS_ABOVE_FLOOR_ONLY)
		1522	top = floor;
		1523
		1524	// insert object above top, or bottom-most if top = 0
		1525	if (!top)
		1526	{
		1527	op->below = 0;
		1528	op->above = ms.bot;
		1529	ms.bot = op;
		1530
		1531	*(op->above ? &op->above->below : &ms.top) = op;
1428	}	1532	}
1429	op->above = originator;
1430	op->below = originator->below;
1431	if (op->below) op->below->above = op;
1432	else SET_MAP_OB(op->map, op->x, op->y, op);
1433	/* since *below* originator, no need to update top */
1434	originator->below = op;
1435	} else {	1533	else
1436	/* If there are other objects, then */
1437	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1438	object *last=NULL;
1439	/*
1440	* If there are multiple objects on this space, we do some trickier handling.
1441	* We've already dealt with merging if appropriate.
1442	* Generally, we want to put the new object on top. But if
1443	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1444	* floor, we want to insert above that and no further.
1445	* Also, if there are spell objects on this space, we stop processing
1446	* once we get to them. This reduces the need to traverse over all of
1447	* them when adding another one - this saves quite a bit of cpu time
1448	* when lots of spells are cast in one area. Currently, it is presumed
1449	* that flying non pickable objects are spell objects.
1450	*/
1451
1452	while (top != NULL) {
1453	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1454	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1455	if (QUERY_FLAG(top, FLAG_NO_PICK)
1456	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1457	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1458	{
1459	/* We insert above top, so we want this object below this */
1460	top=top->below;
1461	break;
1462	}
1463	last = top;
1464	top = top->above;
1465	}
1466	/* Don't want top to be NULL, so set it to the last valid object */
1467	top = last;
1468
1469	/* We let update_position deal with figuring out what the space
1470	* looks like instead of lots of conditions here.
1471	* makes things faster, and effectively the same result.
1472	*/
1473
1474	/* Have object 'fall below' other objects that block view.
1475	* Unless those objects are exits, type 66
1476	* If INS_ON_TOP is used, don't do this processing
1477	* Need to find the object that in fact blocks view, otherwise
1478	* stacking is a bit odd.
1479	*/
1480	if (!(flag & INS_ON_TOP) &&
1481	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1482	(op->face && !op->face->visibility)) {
1483	for (last=top; last != floor; last=last->below)
1484	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1485	/* Check to see if we found the object that blocks view,
1486	* and make sure we have a below pointer for it so that
1487	* we can get inserted below this one, which requires we
1488	* set top to the object below us.
1489	*/
1490	if (last && last->below && last != floor) top=last->below;
1491	}
1492	} /* If objects on this space */
1493	if (flag & INS_MAP_LOAD)
1494	top = GET_MAP_TOP(op->map,op->x,op->y);
1495	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1496
1497	/* Top is the object that our object (op) is going to get inserted above.
1498	*/	1534	{
1499
1500	/* First object on this space */
1501	if (!top) {
1502	op->above = GET_MAP_OB(op->map, op->x, op->y);
1503	if (op->above) op->above->below = op;
1504	op->below = NULL;
1505	SET_MAP_OB(op->map, op->x, op->y, op);
1506	} else { /* get inserted into the stack above top */
1507	op->above = top->above;	1535	op->above = top->above;
1508	if (op->above) op->above->below = op;
1509	op->below = top;
1510	top->above = op;	1536	top->above = op;
		1537
		1538	op->below = top;
		1539	*(op->above ? &op->above->below : &ms.top) = op;
1511	}	1540	}
1512	if (op->above==NULL)	1541	}
1513	SET_MAP_TOP(op->map,op->x, op->y, op);
1514	} /* else not INS_BELOW_ORIGINATOR */
1515		1542
1516	if(op->type==PLAYER)	1543	if (op->is_player ())
		1544	{
1517	op->contr->do_los=1;	1545	op->contr->do_los = 1;
		1546	++op->map->players;
		1547	op->map->touch ();
		1548	}
1518		1549
1519	/* If we have a floor, we know the player, if any, will be above	1550	op->map->dirty = true;
1520	* it, so save a few ticks and start from there.
1521	*/
1522	if (!(flag & INS_MAP_LOAD))
1523	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1524	if (tmp->type == PLAYER)
1525	tmp->contr->socket.update_look=1;
1526	}
1527		1551
		1552	if (object *pl = ms.player ())
		1553	//TODO: the floorbox prev/next might need updating
		1554	//esrv_send_item (pl, op);
		1555	//TODO: update floorbox to preserve ordering
		1556	if (pl->contr->ns)
		1557	pl->contr->ns->floorbox_update ();
		1558
1528	/* If this object glows, it may affect lighting conditions that are	1559	/* If this object glows, it may affect lighting conditions that are
1529	* visible to others on this map. But update_all_los is really	1560	* visible to others on this map. But update_all_los is really
1530	* an inefficient way to do this, as it means los for all players	1561	* an inefficient way to do this, as it means los for all players
1531	* on the map will get recalculated. The players could very well	1562	* on the map will get recalculated. The players could very well
1532	* be far away from this change and not affected in any way -	1563	* be far away from this change and not affected in any way -
1533	* this should get redone to only look for players within range,	1564	* this should get redone to only look for players within range,
1534	* or just updating the P_NEED_UPDATE for spaces within this area	1565	* or just updating the P_UPTODATE for spaces within this area
1535	* of effect may be sufficient.	1566	* of effect may be sufficient.
1536	*/	1567	*/
1537	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1568	if (op->affects_los ())
		1569	{
		1570	op->ms ().invalidate ();
1538	update_all_los(op->map, op->x, op->y);	1571	update_all_los (op->map, op->x, op->y);
		1572	}
1539		1573
1540
1541	/* updates flags (blocked, alive, no magic, etc) for this map space */	1574	/* updates flags (blocked, alive, no magic, etc) for this map space */
1542	update_object(op,UP_OBJ_INSERT);	1575	update_object (op, UP_OBJ_INSERT);
1543		1576
		1577	INVOKE_OBJECT (INSERT, op);
1544		1578
1545	/* Don't know if moving this to the end will break anything. However,	1579	/* Don't know if moving this to the end will break anything. However,
1546	* we want to have update_look set above before calling this.	1580	* we want to have floorbox_update called before calling this.
1547	*	1581	*
1548	* check_move_on() must be after this because code called from	1582	* check_move_on() must be after this because code called from
1549	* check_move_on() depends on correct map flags (so functions like	1583	* check_move_on() depends on correct map flags (so functions like
1550	* blocked() and wall() work properly), and these flags are updated by	1584	* blocked() and wall() work properly), and these flags are updated by
1551	* update_object().	1585	* update_object().
1552	*/	1586	*/
1553		1587
1554	/* if this is not the head or flag has been passed, don't check walk on status */	1588	/* if this is not the head or flag has been passed, don't check walk on status */
1555
1556	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1589	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1590	{
1557	if (check_move_on(op, originator))	1591	if (check_move_on (op, originator, flag))
1558	return NULL;	1592	return 0;
1559		1593
1560	/* If we are a multi part object, lets work our way through the check	1594	/* If we are a multi part object, let's work our way through the check
1561	* walk on's.	1595	* walk on's.
1562	*/	1596	*/
1563	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1597	for (object *tmp = op->more; tmp; tmp = tmp->more)
1564	if (check_move_on (tmp, originator))	1598	if (check_move_on (tmp, originator, flag))
1565	return NULL;	1599	return 0;
1566	}	1600	}
		1601
1567	return op;	1602	return op;
1568	}	1603	}
1569		1604
1570	/* this function inserts an object in the map, but if it	1605	/* this function inserts an object in the map, but if it
1571	* finds an object of its own type, it'll remove that one first.	1606	* finds an object of its own type, it'll remove that one first.
1572	* op is the object to insert it under: supplies x and the map.	1607	* op is the object to insert it under: supplies x and the map.
1573	*/	1608	*/
1574	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1609	void
1575	object *tmp;	1610	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1576	object *tmp1;	1611	{
1577
1578	/* first search for itself and remove any old instances */	1612	/* first search for itself and remove any old instances */
1579		1613
1580	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1614	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1581	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1615	if (tmp->arch->archname == archname) /* same archetype */
1582	remove_ob(tmp);	1616	tmp->destroy ();
1583	free_object(tmp);
1584	}
1585	}
1586		1617
1587	tmp1=arch_to_object(find_archetype(arch_string));	1618	object *tmp = archetype::find (archname)->instance ();
1588		1619
1589		1620	tmp->x = op->x;
1590	tmp1->x = op->x; tmp1->y = op->y;	1621	tmp->y = op->y;
		1622
1591	insert_ob_in_map(tmp1,op->map,op,0);	1623	insert_ob_in_map (tmp, op->map, op, 0);
1592	}	1624	}
1593		1625
1594	/*	1626	object *
1595	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1627	object::insert_at (object *where, object *originator, int flags)
1596	* is returned contains nr objects, and the remaining parts contains	1628	{
1597	* the rest (or is removed and freed if that number is 0).	1629	if (where->env)
1598	* On failure, NULL is returned, and the reason put into the	1630	return where->env->insert (this);
1599	* global static errmsg array.	1631	else
1600	*/	1632	return where->map->insert (this, where->x, where->y, originator, flags);
		1633	}
1601		1634
1602	object *get_split_ob(object *orig_ob, uint32 nr) {	1635	// check whether we can put this into the map, respect max_volume, max_items
1603	object *newob;	1636	bool
1604	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1637	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1638	{
		1639	mapspace &ms = m->at (x, y);
1605		1640
1606	if(orig_ob->nrof<nr) {	1641	int items = ms.items ();
1607	sprintf(errmsg,"There are only %d %ss.",
1608	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1609	return NULL;
1610	}
1611	newob = object_create_clone(orig_ob);
1612	if((orig_ob->nrof-=nr)<1) {
1613	if ( ! is_removed)
1614	remove_ob(orig_ob);
1615	free_object2(orig_ob, 1);
1616	}
1617	else if ( ! is_removed) {
1618	if(orig_ob->env!=NULL)
1619	sub_weight (orig_ob->env,orig_ob->weight*nr);
1620	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1621	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1622	LOG(llevDebug,
1623	"Error, Tried to split object whose map is not in memory.\n");
1624	return NULL;
1625	}
1626	}
1627	newob->nrof=nr;
1628		1642
		1643	if (!items // testing !items ensures we can drop at least one item
		1644	|| (items < m->max_items
		1645	&& ms.volume () < m->max_volume))
1629	return newob;	1646	return true;
1630	}
1631		1647
		1648	if (originator && originator->is_player ())
		1649	originator->contr->failmsgf (
		1650	"No matter how hard you try, you just cannot put the %s here H<Try to remove some items from the floor first.>",
		1651	query_name ()
		1652	);
		1653
		1654	return false;
		1655	}
		1656
1632	/*	1657	/*
1633	* decrease_ob_nr(object, number) decreases a specified number from	1658	* decrease(object, number) decreases a specified number from
1634	* the amount of an object. If the amount reaches 0, the object	1659	* the amount of an object. If the amount reaches 0, the object
1635	* is subsequently removed and freed.	1660	* is subsequently removed and freed.
1636	*	1661	*
1637	* Return value: 'op' if something is left, NULL if the amount reached 0	1662	* Return value: 'op' if something is left, NULL if the amount reached 0
1638	*/	1663	*/
1639		1664	bool
1640	object *decrease_ob_nr (object *op, uint32 i)	1665	object::decrease (sint32 nr)
1641	{	1666	{
1642	object *tmp;	1667	if (!nr)
1643	player *pl;	1668	return true;
1644		1669
1645	if (i == 0) /* objects with op->nrof require this check */	1670	nr = min (nr, nrof);
		1671
		1672	if (nrof > nr)
		1673	{
		1674	sint64 oweight = total_weight ();
		1675
		1676	nrof -= nr;
		1677
		1678	if (object *pl = visible_to ())
		1679	esrv_update_item (UPD_NROF, pl, this);
		1680
		1681	adjust_weight (env, oweight, total_weight ());
		1682
		1683	return true;
		1684	}
		1685	else
		1686	{
		1687	destroy ();
		1688	return false;
		1689	}
		1690	}
		1691
		1692	/*
		1693	* split(ob,nr) splits up ob into two parts. The part which
		1694	* is returned contains nr objects, and the remaining parts contains
		1695	* the rest (or is removed and returned if that number is 0).
		1696	* On failure, NULL is returned.
		1697	*/
		1698	object *
		1699	object::split (sint32 nr)
		1700	{
		1701	int have = number_of ();
		1702
		1703	if (have < nr)
		1704	return 0;
		1705	else if (have == nr)
		1706	{
		1707	remove ();
		1708	return this;
		1709	}
		1710	else
		1711	{
		1712	decrease (nr);
		1713
		1714	object *op = deep_clone ();
		1715	op->nrof = nr;
1646	return op;	1716	return op;
1647
1648	if (i > op->nrof)
1649	i = op->nrof;
1650
1651	if (QUERY_FLAG (op, FLAG_REMOVED))
1652	{	1717	}
1653	op->nrof -= i;	1718	}
		1719
		1720	object *
		1721	insert_ob_in_ob (object *op, object *where)
		1722	{
		1723	if (!where)
1654	}	1724	{
1655	else if (op->env != NULL)	1725	char *dump = dump_object (op);
1656	{	1726	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1657	/* is this object in the players inventory, or sub container	1727	free (dump);
1658	* therein?
1659	*/
1660	tmp = is_player_inv (op->env);
1661	/* nope. Is this a container the player has opened?
1662	* If so, set tmp to that player.
1663	* IMO, searching through all the players will mostly
1664	* likely be quicker than following op->env to the map,
1665	* and then searching the map for a player.
1666	*/
1667	if (!tmp) {
1668	for (pl=first_player; pl; pl=pl->next)
1669	if (pl->ob->container == op->env) break;
1670	if (pl) tmp=pl->ob;
1671	else tmp=NULL;
1672	}
1673
1674	if (i < op->nrof) {
1675	sub_weight (op->env, op->weight * i);
1676	op->nrof -= i;
1677	if (tmp) {
1678	esrv_send_item(tmp, op);
1679	}
1680	} else {
1681	remove_ob (op);
1682	op->nrof = 0;
1683	if (tmp) {
1684	esrv_del_item(tmp->contr, op->count);
1685	}
1686	}
1687	}
1688	else
1689	{
1690	object *above = op->above;
1691
1692	if (i < op->nrof) {
1693	op->nrof -= i;
1694	} else {
1695	remove_ob (op);
1696	op->nrof = 0;
1697	}
1698	/* Since we just removed op, op->above is null */
1699	for (tmp = above; tmp != NULL; tmp = tmp->above)
1700	if (tmp->type == PLAYER) {
1701	if (op->nrof)
1702	esrv_send_item(tmp, op);
1703	else
1704	esrv_del_item(tmp->contr, op->count);
1705	}
1706	}
1707
1708	if (op->nrof) {
1709	return op;	1728	return op;
1710	} else {	1729	}
1711	free_object (op);	1730
1712	return NULL;	1731	if (where->head_ () != where)
1713	}	1732	{
1714	}	1733	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1715		1734	where = where->head;
1716	/*
1717	* add_weight(object, weight) adds the specified weight to an object,
1718	* and also updates how much the environment(s) is/are carrying.
1719	*/
1720
1721	void add_weight (object *op, signed long weight) {
1722	while (op!=NULL) {
1723	if (op->type == CONTAINER) {
1724	weight=(signed long)(weight*(100-op->stats.Str)/100);
1725	}
1726	op->carrying+=weight;
1727	op=op->env;
1728	}	1735	}
1729	}
1730		1736
		1737	return where->insert (op);
		1738	}
		1739
1731	/*	1740	/*
1732	* insert_ob_in_ob(op,environment):	1741	* env->insert (op)
1733	* This function inserts the object op in the linked list	1742	* This function inserts the object op in the linked list
1734	* inside the object environment.	1743	* inside the object environment.
1735	*	1744	*
1736	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1737	* the inventory at the last position or next to other objects of the same
1738	* type.
1739	* Frank: Now sorted by type, archetype and magic!
1740	*
1741	* The function returns now pointer to inserted item, and return value can	1745	* The function returns now pointer to inserted item, and return value can
1742	* be != op, if items are merged. -Tero	1746	* be != op, if items are merged. -Tero
1743	*/	1747	*/
1744		1748	object *
1745	object *insert_ob_in_ob(object *op,object *where) {	1749	object::insert (object *op)
1746	object *tmp, *otmp;	1750	{
1747
1748	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1749	dump_object(op);
1750	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1751	return op;
1752	}
1753	if(where==NULL) {
1754	dump_object(op);
1755	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1756	return op;
1757	}
1758	if (where->head) {
1759	LOG(llevDebug,
1760	"Warning: Tried to insert object wrong part of multipart object.\n");
1761	where = where->head;
1762	}
1763	if (op->more) {	1751	if (op->more)
		1752	{
1764	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1753	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1765	&op->name, op->count);
1766	return op;	1754	return op;
1767	}	1755	}
1768	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1756
1769	CLEAR_FLAG(op, FLAG_REMOVED);	1757	op->remove ();
		1758
		1759	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1760
1770	if(op->nrof) {	1761	if (op->nrof)
1771	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1762	for (object *tmp = inv; tmp; tmp = tmp->below)
1772	if ( CAN_MERGE(tmp,op) ) {	1763	if (object::can_merge (tmp, op))
		1764	{
1773	/* return the original object and remove inserted object	1765	/* return the original object and remove inserted object
1774	(client needs the original object) */	1766	(client prefers the original object) */
		1767
		1768	// carring must be 0 for mergable objects
		1769	sint64 oweight = tmp->weight * tmp->nrof;
		1770
1775	tmp->nrof += op->nrof;	1771	tmp->nrof += op->nrof;
1776	/* Weight handling gets pretty funky. Since we are adding to	1772
1777	* tmp->nrof, we need to increase the weight.	1773	if (object *pl = tmp->visible_to ())
1778	*/	1774	esrv_update_item (UPD_NROF, pl, tmp);
1779	add_weight (where, op->weight*op->nrof);	1775
1780	SET_FLAG(op, FLAG_REMOVED);	1776	adjust_weight (this, oweight, tmp->weight * tmp->nrof);
1781	free_object(op); /* free the inserted object */	1777
		1778	op->destroy ();
1782	op = tmp;	1779	op = tmp;
1783	remove_ob (op); /* and fix old object's links */	1780	goto inserted;
1784	CLEAR_FLAG(op, FLAG_REMOVED);
1785	break;
1786	}	1781	}
1787		1782
1788	/* I assume combined objects have no inventory	1783	op->owner = 0; // it's his/hers now. period.
1789	* We add the weight - this object could have just been removed	1784	op->map = 0;
1790	* (if it was possible to merge). calling remove_ob will subtract	1785	op->x = 0;
1791	* the weight, so we need to add it in again, since we actually do	1786	op->y = 0;
1792	* the linking below
1793	*/
1794	add_weight (where, op->weight*op->nrof);
1795	} else
1796	add_weight (where, (op->weight+op->carrying));
1797		1787
1798	otmp=is_player_inv(where);
1799	if (otmp&&otmp->contr!=NULL) {
1800	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1801	fix_player(otmp);
1802	}
1803
1804	op->map=NULL;
1805	op->env=where;
1806	op->above=NULL;	1788	op->above = 0;
1807	op->below=NULL;	1789	op->below = inv;
1808	op->x=0,op->y=0;	1790	op->env = this;
1809		1791
		1792	if (inv)
		1793	inv->above = op;
		1794
		1795	inv = op;
		1796
		1797	op->flag [FLAG_REMOVED] = 0;
		1798
		1799	if (object *pl = op->visible_to ())
		1800	esrv_send_item (pl, op);
		1801
		1802	adjust_weight (this, 0, op->total_weight ());
		1803
		1804	inserted:
1810	/* reset the light list and los of the players on the map */	1805	/* reset the light list and los of the players on the map */
1811	if((op->glow_radius!=0)&&where->map)	1806	if (op->glow_radius && is_on_map ())
1812	{	1807	{
1813	#ifdef DEBUG_LIGHTS	1808	update_stats ();
1814	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1809	update_all_los (map, x, y);
1815	op->name);
1816	#endif /* DEBUG_LIGHTS */
1817	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1818	}	1810	}
		1811	else if (is_player ())
		1812	// if this is a player's inventory, update stats
		1813	contr->queue_stats_update ();
1819		1814
1820	/* Client has no idea of ordering so lets not bother ordering it here.	1815	INVOKE_OBJECT (INSERT, this);
1821	* It sure simplifies this function...	1816
1822	*/
1823	if (where->inv==NULL)
1824	where->inv=op;
1825	else {
1826	op->below = where->inv;
1827	op->below->above = op;
1828	where->inv = op;
1829	}
1830	return op;	1817	return op;
1831	}	1818	}
1832		1819
1833	/*	1820	/*
1834	* Checks if any objects has a move_type that matches objects	1821	* Checks if any objects has a move_type that matches objects
…		…
1848	*	1835	*
1849	* MSW 2001-07-08: Check all objects on space, not just those below	1836	* MSW 2001-07-08: Check all objects on space, not just those below
1850	* object being inserted. insert_ob_in_map may not put new objects	1837	* object being inserted. insert_ob_in_map may not put new objects
1851	* on top.	1838	* on top.
1852	*/	1839	*/
1853		1840	int
1854	int check_move_on (object *op, object *originator)	1841	check_move_on (object *op, object *originator, int flags)
1855	{	1842	{
		1843	if (op->flag [FLAG_NO_APPLY])
		1844	return 0;
		1845
1856	object *tmp;	1846	object *tmp;
1857	tag_t tag;
1858	mapstruct *m=op->map;	1847	maptile *m = op->map;
1859	int x=op->x, y=op->y;	1848	int x = op->x, y = op->y;
1860	MoveType move_on, move_slow, move_block;
1861		1849
1862	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1850	mapspace &ms = m->at (x, y);
1863	return 0;
1864		1851
1865	tag = op->count;	1852	ms.update ();
1866		1853
1867	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1854	MoveType move_on = ms.move_on;
1868	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1855	MoveType move_slow = ms.move_slow;
1869	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1856	MoveType move_block = ms.move_block;
1870		1857
1871	/* if nothing on this space will slow op down or be applied,	1858	/* if nothing on this space will slow op down or be applied,
1872	* no need to do checking below. have to make sure move_type	1859	* no need to do checking below. have to make sure move_type
1873	* is set, as lots of objects don't have it set - we treat that	1860	* is set, as lots of objects don't have it set - we treat that
1874	* as walking.	1861	* as walking.
1875	*/	1862	*/
1876	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1863	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1877	return 0;	1864	return 0;
1878		1865
1879	/* This is basically inverse logic of that below - basically,	1866	/* This is basically inverse logic of that below - basically,
1880	* if the object can avoid the move on or slow move, they do so,	1867	* if the object can avoid the move on or slow move, they do so,
1881	* but can't do it if the alternate movement they are using is	1868	* but can't do it if the alternate movement they are using is
1882	* blocked. Logic on this seems confusing, but does seem correct.	1869	* blocked. Logic on this seems confusing, but does seem correct.
1883	*/	1870	*/
1884	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1871	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1885	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1872	return 0;
1886		1873
1887	/* The objects have to be checked from top to bottom.	1874	/* The objects have to be checked from top to bottom.
1888	* Hence, we first go to the top:	1875	* Hence, we first go to the top:
1889	*/	1876	*/
1890		1877	for (object *next, *tmp = ms.top; tmp; tmp = next)
1891	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
1892	tmp->above!=NULL; tmp=tmp->above) {
1893	/* Trim the search when we find the first other spell effect
1894	* this helps performance so that if a space has 50 spell objects,
1895	* we don't need to check all of them.
1896	*/
1897	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
1898	}	1878	{
1899	for(;tmp!=NULL; tmp=tmp->below) {	1879	next = tmp->below;
		1880
		1881	if (tmp == op)
1900	if (tmp == op) continue; /* Can't apply yourself */	1882	continue; /* Can't apply yourself */
1901		1883
1902	/* Check to see if one of the movement types should be slowed down.	1884	/* Check to see if one of the movement types should be slowed down.
1903	* Second check makes sure that the movement types not being slowed	1885	* Second check makes sure that the movement types not being slowed
1904	* (~slow_move) is not blocked on this space - just because the	1886	* (~slow_move) is not blocked on this space - just because the
1905	* space doesn't slow down swimming (for example), if you can't actually	1887	* space doesn't slow down swimming (for example), if you can't actually
1906	* swim on that space, can't use it to avoid the penalty.	1888	* swim on that space, can't use it to avoid the penalty.
1907	*/	1889	*/
1908	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1890	if (!op->flag [FLAG_WIZPASS])
		1891	{
1909	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1892	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1910	((op->move_type & tmp->move_slow) &&
1911	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1893	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
1912		1894	{
1913	float diff;
1914
1915	diff = tmp->move_slow_penalty*FABS(op->speed);	1895	float diff = tmp->move_slow_penalty * fabs (op->speed);
1916	if (op->type == PLAYER) {	1896
		1897	if (op->is_player ())
1917	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1898	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
1918	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1899	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
1919	diff /= 4.0;	1900	diff /= 4.0;
1920	}	1901
1921	}
1922	op->speed_left -= diff;	1902	op->speed_left -= diff;
1923	}	1903	}
1924	}	1904	}
1925		1905
1926	/* Basically same logic as above, except now for actual apply. */	1906	/* Basically same logic as above, except now for actual apply. */
1927	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1907	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1928	((op->move_type & tmp->move_on) &&
1929	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1908	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
		1909	{
		1910	if ((flags & INS_NO_AUTO_EXIT)
		1911	&& (tmp->type == EXIT || tmp->type == TELEPORTER
		1912	|| tmp->type == HOLE || tmp->type == TRAPDOOR)) //TODO: temporary, fix exits instead
		1913	continue;
1930		1914
1931	move_apply(tmp, op, originator);	1915	move_apply (tmp, op, originator);
		1916
1932	if (was_destroyed (op, tag))	1917	if (op->destroyed ())
1933	return 1;	1918	return 1;
1934		1919
1935	/* what the person/creature stepped onto has moved the object	1920	/* what the person/creature stepped onto has moved the object
1936	* someplace new. Don't process any further - if we did,	1921	* someplace new. Don't process any further - if we did,
1937	* have a feeling strange problems would result.	1922	* have a feeling strange problems would result.
1938	*/	1923	*/
1939	if (op->map != m || op->x != x || op->y != y) return 0;	1924	if (op->map != m || op->x != x || op->y != y)
		1925	return 0;
1940	}	1926	}
1941	}	1927	}
		1928
1942	return 0;	1929	return 0;
1943	}	1930	}
1944		1931
1945	/*	1932	/*
1946	* present_arch(arch, map, x, y) searches for any objects with	1933	* present_arch(arch, map, x, y) searches for any objects with
1947	* a matching archetype at the given map and coordinates.	1934	* a matching archetype at the given map and coordinates.
1948	* The first matching object is returned, or NULL if none.	1935	* The first matching object is returned, or NULL if none.
1949	*/	1936	*/
1950		1937	object *
1951	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1938	present_arch (const archetype *at, maptile *m, int x, int y)
1952	object *tmp;	1939	{
1953	if(m==NULL || out_of_map(m,x,y)) {	1940	if (!m || out_of_map (m, x, y))
		1941	{
1954	LOG(llevError,"Present_arch called outside map.\n");	1942	LOG (llevError, "Present_arch called outside map.\n");
1955	return NULL;	1943	return NULL;
1956	}	1944	}
1957	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1945
1958	if(tmp->arch == at)	1946	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1947	if (tmp->arch->archname == at->archname)
1959	return tmp;	1948	return tmp;
		1949
1960	return NULL;	1950	return NULL;
1961	}	1951	}
1962		1952
1963	/*	1953	/*
1964	* present(type, map, x, y) searches for any objects with	1954	* present(type, map, x, y) searches for any objects with
1965	* a matching type variable at the given map and coordinates.	1955	* a matching type variable at the given map and coordinates.
1966	* The first matching object is returned, or NULL if none.	1956	* The first matching object is returned, or NULL if none.
1967	*/	1957	*/
1968		1958	object *
1969	object *present(unsigned char type,mapstruct *m, int x,int y) {	1959	present (unsigned char type, maptile *m, int x, int y)
1970	object *tmp;	1960	{
1971	if(out_of_map(m,x,y)) {	1961	if (out_of_map (m, x, y))
		1962	{
1972	LOG(llevError,"Present called outside map.\n");	1963	LOG (llevError, "Present called outside map.\n");
1973	return NULL;	1964	return NULL;
1974	}	1965	}
1975	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1966
		1967	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1976	if(tmp->type==type)	1968	if (tmp->type == type)
1977	return tmp;	1969	return tmp;
		1970
1978	return NULL;	1971	return NULL;
1979	}	1972	}
1980		1973
1981	/*	1974	/*
1982	* present_in_ob(type, object) searches for any objects with	1975	* present_in_ob(type, object) searches for any objects with
1983	* a matching type variable in the inventory of the given object.	1976	* a matching type variable in the inventory of the given object.
1984	* The first matching object is returned, or NULL if none.	1977	* The first matching object is returned, or NULL if none.
1985	*/	1978	*/
1986		1979	object *
1987	object *present_in_ob(unsigned char type, const object *op) {	1980	present_in_ob (unsigned char type, const object *op)
1988	object *tmp;	1981	{
1989	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1982	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1990	if(tmp->type==type)	1983	if (tmp->type == type)
1991	return tmp;	1984	return tmp;
		1985
1992	return NULL;	1986	return NULL;
1993	}	1987	}
1994		1988
1995	/*	1989	/*
1996	* present_in_ob (type, str, object) searches for any objects with	1990	* present_in_ob (type, str, object) searches for any objects with
…		…
2004	* str is the string to match against. Note that we match against	1998	* str is the string to match against. Note that we match against
2005	* the object name, not the archetype name. this is so that the	1999	* the object name, not the archetype name. this is so that the
2006	* spell code can use one object type (force), but change it's name	2000	* spell code can use one object type (force), but change it's name
2007	* to be unique.	2001	* to be unique.
2008	*/	2002	*/
2009		2003	object *
2010	object *present_in_ob_by_name(int type, const char *str, const object *op) {	2004	present_in_ob_by_name (int type, const char *str, const object *op)
2011	object *tmp;	2005	{
2012
2013	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	2006	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2014	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	2007	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2015	return tmp;	2008	return tmp;
2016	}	2009
2017	return NULL;	2010	return 0;
2018	}	2011	}
2019		2012
2020	/*	2013	/*
2021	* present_arch_in_ob(archetype, object) searches for any objects with	2014	* present_arch_in_ob(archetype, object) searches for any objects with
2022	* a matching archetype in the inventory of the given object.	2015	* a matching archetype in the inventory of the given object.
2023	* The first matching object is returned, or NULL if none.	2016	* The first matching object is returned, or NULL if none.
2024	*/	2017	*/
2025		2018	object *
2026	object *present_arch_in_ob(const archetype *at, const object *op) {	2019	present_arch_in_ob (const archetype *at, const object *op)
2027	object *tmp;	2020	{
2028	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	2021	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2029	if( tmp->arch == at)	2022	if (tmp->arch->archname == at->archname)
2030	return tmp;	2023	return tmp;
		2024
2031	return NULL;	2025	return NULL;
2032	}	2026	}
2033		2027
2034	/*	2028	/*
2035	* activate recursively a flag on an object inventory	2029	* activate recursively a flag on an object inventory
2036	*/	2030	*/
		2031	void
2037	void flag_inv(object*op, int flag){	2032	flag_inv (object *op, int flag)
2038	object *tmp;	2033	{
2039	if(op->inv)
2040	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	2034	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2041	SET_FLAG(tmp, flag);	2035	{
		2036	tmp->set_flag (flag);
2042	flag_inv(tmp,flag);	2037	flag_inv (tmp, flag);
2043	}	2038	}
		2039	}
		2040
2044	}/*	2041	/*
2045	* desactivate recursively a flag on an object inventory	2042	* deactivate recursively a flag on an object inventory
2046	*/	2043	*/
		2044	void
2047	void unflag_inv(object*op, int flag){	2045	unflag_inv (object *op, int flag)
2048	object *tmp;	2046	{
2049	if(op->inv)
2050	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	2047	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2051	CLEAR_FLAG(tmp, flag);	2048	{
		2049	tmp->clr_flag (flag);
2052	unflag_inv(tmp,flag);	2050	unflag_inv (tmp, flag);
2053	}	2051	}
2054	}
2055
2056	/*
2057	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2058	* all it's inventory (recursively).
2059	* If checksums are used, a player will get set_cheat called for
2060	* him/her-self and all object carried by a call to this function.
2061	*/
2062
2063	void set_cheat(object *op) {
2064	SET_FLAG(op, FLAG_WAS_WIZ);
2065	flag_inv(op, FLAG_WAS_WIZ);
2066	}	2052	}
2067		2053
2068	/*	2054	/*
2069	* find_free_spot(object, map, x, y, start, stop) will search for	2055	* find_free_spot(object, map, x, y, start, stop) will search for
2070	* a spot at the given map and coordinates which will be able to contain	2056	* a spot at the given map and coordinates which will be able to contain
…		…
2072	* to search (see the freearr_x/y[] definition).	2058	* to search (see the freearr_x/y[] definition).
2073	* It returns a random choice among the alternatives found.	2059	* It returns a random choice among the alternatives found.
2074	* start and stop are where to start relative to the free_arr array (1,9	2060	* start and stop are where to start relative to the free_arr array (1,9
2075	* does all 4 immediate directions). This returns the index into the	2061	* does all 4 immediate directions). This returns the index into the
2076	* array of the free spot, -1 if no spot available (dir 0 = x,y)	2062	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2077	* Note - this only checks to see if there is space for the head of the
2078	* object - if it is a multispace object, this should be called for all
2079	* pieces.
2080	* Note2: This function does correctly handle tiled maps, but does not	2063	* Note: This function does correctly handle tiled maps, but does not
2081	* inform the caller. However, insert_ob_in_map will update as	2064	* inform the caller. However, insert_ob_in_map will update as
2082	* necessary, so the caller shouldn't need to do any special work.	2065	* necessary, so the caller shouldn't need to do any special work.
2083	* Note - updated to take an object instead of archetype - this is necessary	2066	* Note - updated to take an object instead of archetype - this is necessary
2084	* because arch_blocked (now ob_blocked) needs to know the movement type	2067	* because arch_blocked (now ob_blocked) needs to know the movement type
2085	* to know if the space in question will block the object. We can't use	2068	* to know if the space in question will block the object. We can't use
2086	* the archetype because that isn't correct if the monster has been	2069	* the archetype because that isn't correct if the monster has been
2087	* customized, changed states, etc.	2070	* customized, changed states, etc.
2088	*/	2071	*/
2089		2072	int
2090	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2073	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2074	{
		2075	int altern[SIZEOFFREE];
2091	int i,index=0, flag;	2076	int index = 0, flag;
2092	static int altern[SIZEOFFREE];
2093		2077
2094	for(i=start;i<stop;i++) {	2078	for (int i = start; i < stop; i++)
2095	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2079	{
2096	if(!flag)	2080	mapxy pos (m, x, y); pos.move (i);
		2081
		2082	if (!pos.normalise ())
		2083	continue;
		2084
		2085	mapspace &ms = *pos;
		2086
		2087	if (ms.flags () & P_IS_ALIVE)
		2088	continue;
		2089
		2090	/* However, often
		2091	* ob doesn't have any move type (when used to place exits)
		2092	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2093	*/
		2094	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2095	{
2097	altern[index++]=i;	2096	altern [index++] = i;
		2097	continue;
		2098	}
2098		2099
2099	/* Basically, if we find a wall on a space, we cut down the search size.	2100	/* Basically, if we find a wall on a space, we cut down the search size.
2100	* In this way, we won't return spaces that are on another side of a wall.	2101	* In this way, we won't return spaces that are on another side of a wall.
2101	* This mostly work, but it cuts down the search size in all directions -	2102	* This mostly work, but it cuts down the search size in all directions -
2102	* if the space being examined only has a wall to the north and empty	2103	* if the space being examined only has a wall to the north and empty
2103	* spaces in all the other directions, this will reduce the search space	2104	* spaces in all the other directions, this will reduce the search space
2104	* to only the spaces immediately surrounding the target area, and	2105	* to only the spaces immediately surrounding the target area, and
2105	* won't look 2 spaces south of the target space.	2106	* won't look 2 spaces south of the target space.
2106	*/	2107	*/
2107	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2108	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2109	{
2108	stop=maxfree[i];	2110	stop = maxfree[i];
2109	}	2111	continue;
2110	if(!index) return -1;	2112	}
2111	return altern[RANDOM()%index];
2112	}
2113		2113
		2114	/* Note it is intentional that we check ob - the movement type of the
		2115	* head of the object should correspond for the entire object.
		2116	*/
		2117	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2118	continue;
		2119
		2120	if (ob->blocked (pos.m, pos.x, pos.y))
		2121	continue;
		2122
		2123	altern [index++] = i;
		2124	}
		2125
		2126	if (!index)
		2127	return -1;
		2128
		2129	return altern [rndm (index)];
		2130	}
		2131
2114	/*	2132	/*
2115	* find_first_free_spot(archetype, mapstruct, x, y) works like	2133	* find_first_free_spot(archetype, maptile, x, y) works like
2116	* find_free_spot(), but it will search max number of squares.	2134	* find_free_spot(), but it will search max number of squares.
2117	* But it will return the first available spot, not a random choice.	2135	* But it will return the first available spot, not a random choice.
2118	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2136	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2119	*/	2137	*/
2120		2138	int
2121	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2139	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2122	int i;	2140	{
2123	for(i=0;i<SIZEOFFREE;i++) {	2141	for (int i = 0; i < SIZEOFFREE; i++)
2124	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2142	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2125	return i;	2143	return i;
2126	}	2144
2127	return -1;	2145	return -1;
2128	}	2146	}
2129		2147
2130	/*	2148	/*
2131	* The function permute(arr, begin, end) randomly reorders the array	2149	* The function permute(arr, begin, end) randomly reorders the array
2132	* arr[begin..end-1].	2150	* arr[begin..end-1].
		2151	* now uses a fisher-yates shuffle, old permute was broken
2133	*/	2152	*/
		2153	static void
2134	static void permute(int *arr, int begin, int end)	2154	permute (int *arr, int begin, int end)
2135	{	2155	{
2136	int i, j, tmp, len;	2156	arr += begin;
		2157	end -= begin;
2137		2158
2138	len = end-begin;	2159	while (--end)
2139	for(i = begin; i < end; i++)	2160	swap (arr [end], arr [rndm (end + 1)]);
2140	{
2141	j = begin+RANDOM()%len;
2142
2143	tmp = arr[i];
2144	arr[i] = arr[j];
2145	arr[j] = tmp;
2146	}
2147	}	2161	}
2148		2162
2149	/* new function to make monster searching more efficient, and effective!	2163	/* new function to make monster searching more efficient, and effective!
2150	* This basically returns a randomized array (in the passed pointer) of	2164	* This basically returns a randomized array (in the passed pointer) of
2151	* the spaces to find monsters. In this way, it won't always look for	2165	* the spaces to find monsters. In this way, it won't always look for
2152	* monsters to the north first. However, the size of the array passed	2166	* monsters to the north first. However, the size of the array passed
2153	* covers all the spaces, so within that size, all the spaces within	2167	* covers all the spaces, so within that size, all the spaces within
2154	* the 3x3 area will be searched, just not in a predictable order.	2168	* the 3x3 area will be searched, just not in a predictable order.
2155	*/	2169	*/
		2170	void
2156	void get_search_arr(int *search_arr)	2171	get_search_arr (int *search_arr)
2157	{	2172	{
2158	int i;	2173	int i;
2159		2174
2160	for(i = 0; i < SIZEOFFREE; i++)	2175	for (i = 0; i < SIZEOFFREE; i++)
2161	{
2162	search_arr[i] = i;	2176	search_arr[i] = i;
2163	}
2164		2177
2165	permute(search_arr, 1, SIZEOFFREE1+1);	2178	permute (search_arr, 1, SIZEOFFREE1 + 1);
2166	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2179	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2167	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2180	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2168	}	2181	}
2169		2182
2170	/*	2183	/*
2171	* find_dir(map, x, y, exclude) will search some close squares in the	2184	* find_dir(map, x, y, exclude) will search some close squares in the
2172	* given map at the given coordinates for live objects.	2185	* given map at the given coordinates for live objects.
…		…
2177	* Perhaps incorrectly, but I'm making the assumption that exclude	2190	* Perhaps incorrectly, but I'm making the assumption that exclude
2178	* is actually want is going to try and move there. We need this info	2191	* is actually want is going to try and move there. We need this info
2179	* because we have to know what movement the thing looking to move	2192	* because we have to know what movement the thing looking to move
2180	* there is capable of.	2193	* there is capable of.
2181	*/	2194	*/
2182		2195	int
2183	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2196	find_dir (maptile *m, int x, int y, object *exclude)
		2197	{
2184	int i,max=SIZEOFFREE, mflags;	2198	int max = SIZEOFFREE, mflags;
2185	sint16 nx, ny;
2186	object *tmp;
2187	mapstruct *mp;
2188	MoveType blocked, move_type;	2199	MoveType move_type;
2189		2200
2190	if (exclude && exclude->head) {	2201	if (exclude && exclude->head_ () != exclude)
		2202	{
2191	exclude = exclude->head;	2203	exclude = exclude->head;
2192	move_type = exclude->move_type;	2204	move_type = exclude->move_type;
2193	} else {	2205	}
		2206	else
		2207	{
2194	/* If we don't have anything, presume it can use all movement types. */	2208	/* If we don't have anything, presume it can use all movement types. */
2195	move_type=MOVE_ALL;	2209	move_type = MOVE_ALL;
		2210	}
		2211
		2212	for (int i = 1; i < max; i++)
2196	}	2213	{
		2214	mapxy pos (m, x, y);
		2215	pos.move (i);
2197		2216
2198	for(i=1;i<max;i++) {	2217	if (!pos.normalise ())
2199	mp = m;
2200	nx = x + freearr_x[i];	2218	max = maxfree[i];
2201	ny = y + freearr_y[i];	2219	else
		2220	{
		2221	mapspace &ms = *pos;
2202		2222
2203	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2223	if ((move_type & ms.move_block) == move_type)
2204	if (mflags & P_OUT_OF_MAP) {
2205	max = maxfree[i];	2224	max = maxfree [i];
2206	} else {
2207	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2208
2209	if ((move_type & blocked) == move_type) {
2210	max=maxfree[i];
2211	} else if (mflags & P_IS_ALIVE) {	2225	else if (ms.flags () & P_IS_ALIVE)
2212	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2226	{
2213	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2227	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2228	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2214	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2229	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2215	break;
2216	}
2217	}
2218	if(tmp) {
2219	return freedir[i];	2230	return freedir [i];
2220	}
2221	}	2231	}
2222	}	2232	}
2223	}	2233	}
		2234
2224	return 0;	2235	return 0;
2225	}	2236	}
2226		2237
2227	/*	2238	/*
2228	* distance(object 1, object 2) will return the square of the	2239	* distance(object 1, object 2) will return the square of the
2229	* distance between the two given objects.	2240	* distance between the two given objects.
2230	*/	2241	*/
2231		2242	int
2232	int distance(const object *ob1, const object *ob2) {	2243	distance (const object *ob1, const object *ob2)
2233	int i;	2244	{
2234	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2245	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2235	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2236	return i;
2237	}	2246	}
2238		2247
2239	/*	2248	/*
2240	* find_dir_2(delta-x,delta-y) will return a direction in which	2249	* find_dir_2(delta-x,delta-y) will return a direction value
2241	* an object which has subtracted the x and y coordinates of another	2250	* for running into direct [dx, dy].
2242	* object, needs to travel toward it.	2251	* (the opposite of crossfire's find_dir_2!)
2243	*/	2252	*/
2244		2253	int
2245	int find_dir_2(int x, int y) {	2254	find_dir_2 (int x, int y)
		2255	{
		2256	#if 1 // new algorithm
		2257	// this works by putting x, y into 16 sectors, which
		2258	// are not equal sized, but are a better approximation
		2259	// then the old algorithm, and then using a mapping
		2260	// table to map it into a direction value.
		2261	// basically, it maps these comparisons to each bit
		2262	// bit #3: x < 0
		2263	// bit #2: y < 0
		2264	// bit #1: x > y
		2265	// bit #0: x > 2y
		2266
		2267	static const uint8 dir[16] = {
		2268	4, 5, 4, 3,
		2269	2, 1, 2, 3,
		2270	6, 5, 6, 7,
		2271	8, 1, 8, 7,
		2272	};
		2273	int sector = 0;
		2274
		2275	// this is a bit ugly, but more likely to result in branchless code
		2276	sector |= x < 0 ? 8 : 0;
		2277	x = x < 0 ? -x : x; // abs
		2278
		2279	sector |= y < 0 ? 4 : 0;
		2280	y = y < 0 ? -y : y; // abs
		2281
		2282	if (x > y)
		2283	{
		2284	sector |= 2;
		2285
		2286	if (x > y * 2)
		2287	sector |= 1;
		2288	}
		2289	else
		2290	{
		2291	if (y > x * 2)
		2292	sector |= 1;
		2293	else if (!y)
		2294	return 0; // x == 0 here
		2295	}
		2296
		2297	return dir [sector];
		2298	#else // old algorithm
2246	int q;	2299	int q;
2247		2300
2248	if(y)	2301	if (y)
2249	q=x*100/y;	2302	q = 128 * x / y;
2250	else if (x)	2303	else if (x)
2251	q= -300*x;	2304	q = -512 * x; // to make it > 309
2252	else	2305	else
2253	return 0;	2306	return 0;
2254		2307
2255	if(y>0) {	2308	if (y > 0)
2256	if(q < -242)	2309	{
		2310	if (q < -309) return 7;
		2311	if (q < -52) return 6;
		2312	if (q < 52) return 5;
		2313	if (q < 309) return 4;
		2314
2257	return 3 ;	2315	return 3;
2258	if (q < -41)	2316	}
		2317	else
		2318	{
		2319	if (q < -309) return 3;
		2320	if (q < -52) return 2;
		2321	if (q < 52) return 1;
		2322	if (q < 309) return 8;
		2323
2259	return 2 ;	2324	return 7;
2260	if (q < 41)
2261	return 1 ;
2262	if (q < 242)
2263	return 8 ;
2264	return 7 ;
2265	}	2325	}
2266		2326	#endif
2267	if (q < -242)
2268	return 7 ;
2269	if (q < -41)
2270	return 6 ;
2271	if (q < 41)
2272	return 5 ;
2273	if (q < 242)
2274	return 4 ;
2275
2276	return 3 ;
2277	}
2278
2279	/*
2280	* absdir(int): Returns a number between 1 and 8, which represent
2281	* the "absolute" direction of a number (it actually takes care of
2282	* "overflow" in previous calculations of a direction).
2283	*/
2284
2285	int absdir(int d) {
2286	while(d<1) d+=8;
2287	while(d>8) d-=8;
2288	return d;
2289	}	2327	}
2290		2328
2291	/*	2329	/*
2292	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2330	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2293	* between two directions (which are expected to be absolute (see absdir())	2331	* between two directions (which are expected to be absolute (see absdir())
2294	*/	2332	*/
2295		2333	int
2296	int dirdiff(int dir1, int dir2) {	2334	dirdiff (int dir1, int dir2)
2297	int d;	2335	{
2298	d = abs(dir1 - dir2);	2336	int d = abs (dir1 - dir2);
2299	if(d>4)	2337
2300	d = 8 - d;	2338	return d > 4 ? 8 - d : d;
2301	return d;
2302	}	2339	}
2303		2340
2304	/* peterm:	2341	/* peterm:
2305	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2342	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
2306	* Basically, this is a table of directions, and what directions	2343	* Basically, this is a table of directions, and what directions
…		…
2308	* This basically means that if direction is 15, then it could either go	2345	* This basically means that if direction is 15, then it could either go
2309	* direction 4, 14, or 16 to get back to where we are.	2346	* direction 4, 14, or 16 to get back to where we are.
2310	* Moved from spell_util.c to object.c with the other related direction	2347	* Moved from spell_util.c to object.c with the other related direction
2311	* functions.	2348	* functions.
2312	*/	2349	*/
2313
2314	int reduction_dir[SIZEOFFREE][3] = {	2350	static const int reduction_dir[SIZEOFFREE][3] = {
2315	{0,0,0}, /* 0 */	2351	{0, 0, 0}, /* 0 */
2316	{0,0,0}, /* 1 */	2352	{0, 0, 0}, /* 1 */
2317	{0,0,0}, /* 2 */	2353	{0, 0, 0}, /* 2 */
2318	{0,0,0}, /* 3 */	2354	{0, 0, 0}, /* 3 */
2319	{0,0,0}, /* 4 */	2355	{0, 0, 0}, /* 4 */
2320	{0,0,0}, /* 5 */	2356	{0, 0, 0}, /* 5 */
2321	{0,0,0}, /* 6 */	2357	{0, 0, 0}, /* 6 */
2322	{0,0,0}, /* 7 */	2358	{0, 0, 0}, /* 7 */
2323	{0,0,0}, /* 8 */	2359	{0, 0, 0}, /* 8 */
2324	{8,1,2}, /* 9 */	2360	{8, 1, 2}, /* 9 */
2325	{1,2,-1}, /* 10 */	2361	{1, 2, -1}, /* 10 */
2326	{2,10,12}, /* 11 */	2362	{2, 10, 12}, /* 11 */
2327	{2,3,-1}, /* 12 */	2363	{2, 3, -1}, /* 12 */
2328	{2,3,4}, /* 13 */	2364	{2, 3, 4}, /* 13 */
2329	{3,4,-1}, /* 14 */	2365	{3, 4, -1}, /* 14 */
2330	{4,14,16}, /* 15 */	2366	{4, 14, 16}, /* 15 */
2331	{5,4,-1}, /* 16 */	2367	{5, 4, -1}, /* 16 */
2332	{4,5,6}, /* 17 */	2368	{4, 5, 6}, /* 17 */
2333	{6,5,-1}, /* 18 */	2369	{6, 5, -1}, /* 18 */
2334	{6,20,18}, /* 19 */	2370	{6, 20, 18}, /* 19 */
2335	{7,6,-1}, /* 20 */	2371	{7, 6, -1}, /* 20 */
2336	{6,7,8}, /* 21 */	2372	{6, 7, 8}, /* 21 */
2337	{7,8,-1}, /* 22 */	2373	{7, 8, -1}, /* 22 */
2338	{8,22,24}, /* 23 */	2374	{8, 22, 24}, /* 23 */
2339	{8,1,-1}, /* 24 */	2375	{8, 1, -1}, /* 24 */
2340	{24,9,10}, /* 25 */	2376	{24, 9, 10}, /* 25 */
2341	{9,10,-1}, /* 26 */	2377	{9, 10, -1}, /* 26 */
2342	{10,11,-1}, /* 27 */	2378	{10, 11, -1}, /* 27 */
2343	{27,11,29}, /* 28 */	2379	{27, 11, 29}, /* 28 */
2344	{11,12,-1}, /* 29 */	2380	{11, 12, -1}, /* 29 */
2345	{12,13,-1}, /* 30 */	2381	{12, 13, -1}, /* 30 */
2346	{12,13,14}, /* 31 */	2382	{12, 13, 14}, /* 31 */
2347	{13,14,-1}, /* 32 */	2383	{13, 14, -1}, /* 32 */
2348	{14,15,-1}, /* 33 */	2384	{14, 15, -1}, /* 33 */
2349	{33,15,35}, /* 34 */	2385	{33, 15, 35}, /* 34 */
2350	{16,15,-1}, /* 35 */	2386	{16, 15, -1}, /* 35 */
2351	{17,16,-1}, /* 36 */	2387	{17, 16, -1}, /* 36 */
2352	{18,17,16}, /* 37 */	2388	{18, 17, 16}, /* 37 */
2353	{18,17,-1}, /* 38 */	2389	{18, 17, -1}, /* 38 */
2354	{18,19,-1}, /* 39 */	2390	{18, 19, -1}, /* 39 */
2355	{41,19,39}, /* 40 */	2391	{41, 19, 39}, /* 40 */
2356	{19,20,-1}, /* 41 */	2392	{19, 20, -1}, /* 41 */
2357	{20,21,-1}, /* 42 */	2393	{20, 21, -1}, /* 42 */
2358	{20,21,22}, /* 43 */	2394	{20, 21, 22}, /* 43 */
2359	{21,22,-1}, /* 44 */	2395	{21, 22, -1}, /* 44 */
2360	{23,22,-1}, /* 45 */	2396	{23, 22, -1}, /* 45 */
2361	{45,47,23}, /* 46 */	2397	{45, 47, 23}, /* 46 */
2362	{23,24,-1}, /* 47 */	2398	{23, 24, -1}, /* 47 */
2363	{24,9,-1}}; /* 48 */	2399	{24, 9, -1}
		2400	}; /* 48 */
2364		2401
2365	/* Recursive routine to step back and see if we can	2402	/* Recursive routine to step back and see if we can
2366	* find a path to that monster that we found. If not,	2403	* find a path to that monster that we found. If not,
2367	* we don't bother going toward it. Returns 1 if we	2404	* we don't bother going toward it. Returns 1 if we
2368	* can see a direct way to get it	2405	* can see a direct way to get it
2369	* Modified to be map tile aware -.MSW	2406	* Modified to be map tile aware -.MSW
2370	*/	2407	*/
2371		2408	int
2372
2373	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2409	can_see_monsterP (maptile *m, int x, int y, int dir)
		2410	{
2374	sint16 dx, dy;	2411	sint16 dx, dy;
2375	int mflags;	2412	int mflags;
2376		2413
		2414	if (dir < 0)
2377	if(dir<0) return 0; /* exit condition: invalid direction */	2415	return 0; /* exit condition: invalid direction */
2378		2416
2379	dx = x + freearr_x[dir];	2417	dx = x + freearr_x[dir];
2380	dy = y + freearr_y[dir];	2418	dy = y + freearr_y[dir];
2381		2419
2382	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2420	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2383		2421
2384	/* This functional arguably was incorrect before - it was	2422	/* This functional arguably was incorrect before - it was
2385	* checking for P_WALL - that was basically seeing if	2423	* checking for P_WALL - that was basically seeing if
2386	* we could move to the monster - this is being more	2424	* we could move to the monster - this is being more
2387	* literal on if we can see it. To know if we can actually	2425	* literal on if we can see it. To know if we can actually
2388	* move to the monster, we'd need the monster passed in or	2426	* move to the monster, we'd need the monster passed in or
2389	* at least its move type.	2427	* at least its move type.
2390	*/	2428	*/
2391	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2429	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2430	return 0;
2392		2431
2393	/* yes, can see. */	2432	/* yes, can see. */
2394	if(dir < 9) return 1;	2433	if (dir < 9)
		2434	return 1;
		2435
2395	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2436	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2396	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2437	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2397	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2438	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2398	}	2439	}
2399		2440
2400
2401
2402	/*	2441	/*
2403	* can_pick(picker, item): finds out if an object is possible to be	2442	* can_pick(picker, item): finds out if an object is possible to be
2404	* picked up by the picker. Returnes 1 if it can be	2443	* picked up by the picker. Returnes 1 if it can be
2405	* picked up, otherwise 0.	2444	* picked up, otherwise 0.
2406	*	2445	*
2407	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2446	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2408	* core dumps if they do.	2447	* core dumps if they do.
2409	*	2448	*
2410	* Add a check so we can't pick up invisible objects (0.93.8)	2449	* Add a check so we can't pick up invisible objects (0.93.8)
2411	*/	2450	*/
2412		2451	int
2413	int can_pick(const object *who, const object *item) {	2452	can_pick (const object *who, const object *item)
2414	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2453	{
2415	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2454	return /*who->flag [FLAG_WIZ]|| */
2416	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2455	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2417	(who->type==PLAYER||item->weight<who->weight/3));	2456	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2418	}	2457	}
2419
2420		2458
2421	/*	2459	/*
2422	* create clone from object to another	2460	* create clone from object to another
2423	*/	2461	*/
2424	object *object_create_clone (object *asrc) {	2462	object *
2425	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2463	object::deep_clone ()
		2464	{
		2465	assert (("deep_clone called on non-head object", is_head ()));
2426		2466
2427	if(!asrc) return NULL;	2467	object *dst = clone ();
2428	src = asrc;
2429	if(src->head)
2430	src = src->head;
2431		2468
2432	prev = NULL;	2469	object *prev = dst;
2433	for(part = src; part; part = part->more) {	2470	for (object *part = this->more; part; part = part->more)
2434	tmp = get_object();	2471	{
2435	copy_object(part,tmp);	2472	object *tmp = part->clone ();
2436	tmp->x -= src->x;
2437	tmp->y -= src->y;
2438	if(!part->head) {
2439	dst = tmp;
2440	tmp->head = NULL;
2441	} else {
2442	tmp->head = dst;	2473	tmp->head = dst;
2443	}
2444	tmp->more = NULL;
2445	if(prev)
2446	prev->more = tmp;	2474	prev->more = tmp;
2447	prev = tmp;	2475	prev = tmp;
2448	}	2476	}
2449	/*** copy inventory ***/	2477
2450	for(item = src->inv; item; item = item->below) {	2478	for (object *item = inv; item; item = item->below)
2451	(void) insert_ob_in_ob(object_create_clone(item),dst);	2479	insert_ob_in_ob (item->deep_clone (), dst);
2452	}
2453		2480
2454	return dst;	2481	return dst;
2455	}
2456
2457	/* return true if the object was destroyed, 0 otherwise */
2458	int was_destroyed (const object *op, tag_t old_tag)
2459	{
2460	/* checking for FLAG_FREED isn't necessary, but makes this function more
2461	* robust */
2462	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2463	}
2464
2465	/* GROS - Creates an object using a string representing its content. */
2466	/* Basically, we save the content of the string to a temp file, then call */
2467	/* load_object on it. I admit it is a highly inefficient way to make things, */
2468	/* but it was simple to make and allows reusing the load_object function. */
2469	/* Remember not to use load_object_str in a time-critical situation. */
2470	/* Also remember that multiparts objects are not supported for now. */
2471
2472	object* load_object_str(const char *obstr)
2473	{
2474	object *op;
2475	char filename[MAX_BUF];
2476	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2477
2478	FILE *tempfile=fopen(filename,"w");
2479	if (tempfile == NULL)
2480	{
2481	LOG(llevError,"Error - Unable to access load object temp file\n");
2482	return NULL;
2483	};
2484	fprintf(tempfile,obstr);
2485	fclose(tempfile);
2486
2487	op=get_object();
2488
2489	object_thawer thawer (filename);
2490	if (thawer)
2491	load_object(thawer,op,LO_NEWFILE,0);
2492	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2493	CLEAR_FLAG(op,FLAG_REMOVED);
2494
2495	return op;
2496	}	2482	}
2497		2483
2498	/* This returns the first object in who's inventory that	2484	/* This returns the first object in who's inventory that
2499	* has the same type and subtype match.	2485	* has the same type and subtype match.
2500	* returns NULL if no match.	2486	* returns NULL if no match.
2501	*/	2487	*/
		2488	object *
2502	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2489	find_obj_by_type_subtype (const object *who, int type, int subtype)
2503	{	2490	{
2504	object *tmp;
2505
2506	for (tmp=who->inv; tmp; tmp=tmp->below)	2491	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2507	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2492	if (tmp->type == type && tmp->subtype == subtype)
		2493	return tmp;
2508		2494
2509	return NULL;	2495	return 0;
2510	}	2496	}
2511		2497
2512	/* If ob has a field named key, return the link from the list,	2498	shstr_tmp
2513	* otherwise return NULL.	2499	object::kv_get (shstr_tmp key) const
2514	*	2500	{
2515	* key must be a passed in shared string - otherwise, this won't	2501	for (key_value *kv = key_values; kv; kv = kv->next)
2516	* do the desired thing.	2502	if (kv->key == key)
2517	*/	2503	return kv->value;
2518	key_value * get_ob_key_link(const object * ob, const char * key) {	2504
2519	key_value * link;	2505	return shstr ();
		2506	}
		2507
		2508	void
		2509	object::kv_set (shstr_tmp key, shstr_tmp value)
		2510	{
		2511	for (key_value *kv = key_values; kv; kv = kv->next)
		2512	if (kv->key == key)
		2513	{
		2514	kv->value = value;
		2515	return;
		2516	}
		2517
		2518	key_value *kv = new key_value;
		2519
		2520	kv->next = key_values;
		2521	kv->key = key;
		2522	kv->value = value;
		2523
		2524	key_values = kv;
		2525	}
		2526
		2527	void
		2528	object::kv_del (shstr_tmp key)
		2529	{
		2530	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2531	if ((*kvp)->key == key)
		2532	{
		2533	key_value *kv = *kvp;
		2534	*kvp = (*kvp)->next;
		2535	delete kv;
		2536	return;
		2537	}
		2538	}
		2539
		2540	object::depth_iterator::depth_iterator (object *container)
		2541	: iterator_base (container)
		2542	{
		2543	while (item->inv)
		2544	item = item->inv;
		2545	}
		2546
		2547	void
		2548	object::depth_iterator::next ()
		2549	{
		2550	if (item->below)
2520		2551	{
2521	for (link = ob->key_values; link != NULL; link = link->next) {	2552	item = item->below;
2522	if (link->key == key) {	2553
2523	return link;	2554	while (item->inv)
		2555	item = item->inv;
		2556	}
		2557	else
		2558	item = item->env;
		2559	}
		2560
		2561	const char *
		2562	object::flag_desc (char *desc, int len) const
		2563	{
		2564	char *p = desc;
		2565	bool first = true;
		2566
		2567	*p = 0;
		2568
		2569	for (int i = 0; i < NUM_FLAGS; i++)
		2570	{
		2571	if (len <= 10) // magic constant!
		2572	{
		2573	snprintf (p, len, ",...");
		2574	break;
2524	}	2575	}
2525	}
2526
2527	return NULL;
2528	}
2529		2576
2530	/*	2577	if (flag [i])
2531	* Returns the value of op has an extra_field for key, or NULL.
2532	*
2533	* The argument doesn't need to be a shared string.
2534	*
2535	* The returned string is shared.
2536	*/
2537	const char * get_ob_key_value(const object * op, const char * const key) {
2538	key_value * link;
2539	const char * canonical_key;
2540
2541	canonical_key = shstr::find (key);
2542
2543	if (canonical_key == NULL) {
2544	/* 1. There being a field named key on any object
2545	* implies there'd be a shared string to find.
2546	* 2. Since there isn't, no object has this field.
2547	* 3. Therefore, *this* object doesn't have this field.
2548	*/	2578	{
2549	return NULL;	2579	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2550	}	2580	len -= cnt;
2551		2581	p += cnt;
2552	/* This is copied from get_ob_key_link() above -	2582	first = false;
2553	* only 4 lines, and saves the function call overhead.
2554	*/
2555	for (link = op->key_values; link != NULL; link = link->next) {
2556	if (link->key == canonical_key) {
2557	return link->value;
2558	}	2583	}
2559	}	2584	}
		2585
		2586	return desc;
		2587	}
		2588
		2589	// return a suitable string describing an object in enough detail to find it
		2590	const char *
		2591	object::debug_desc (char *info) const
		2592	{
		2593	char flagdesc[512];
		2594	char info2[256 * 4];
		2595	char *p = info;
		2596
		2597	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2598	count,
		2599	uuid.c_str (),
		2600	&name,
		2601	title ? ",title:\"" : "",
		2602	title ? (const char *)title : "",
		2603	title ? "\"" : "",
		2604	flag_desc (flagdesc, 512), type);
		2605
		2606	if (!flag[FLAG_REMOVED] && env)
		2607	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2608
		2609	if (map)
		2610	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2611
		2612	return info;
		2613	}
		2614
		2615	const char *
		2616	object::debug_desc () const
		2617	{
		2618	static char info[3][256 * 4];
		2619	static int info_idx;
		2620
		2621	return debug_desc (info [++info_idx % 3]);
		2622	}
		2623
		2624	struct region *
		2625	object::region () const
		2626	{
		2627	return map ? map->region (x, y)
		2628	: region::default_region ();
		2629	}
		2630
		2631	void
		2632	object::open_container (object *new_container)
		2633	{
		2634	if (container == new_container)
2560	return NULL;	2635	return;
2561	}
2562		2636
		2637	object *old_container = container;
2563		2638
2564	/*	2639	if (old_container)
2565	* Updates the canonical_key in op to value.
2566	*
2567	* canonical_key is a shared string (value doesn't have to be).
2568	*
2569	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2570	* keys.
2571	*
2572	* Returns TRUE on success.
2573	*/
2574	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {
2575	key_value * field = NULL, *last=NULL;
2576		2640	{
2577	for (field=op->key_values; field != NULL; field=field->next) {	2641	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2578	if (field->key != canonical_key) {	2642	return;
2579	last = field;	2643
2580	continue;	2644	#if 0
		2645	// remove the "Close old_container" object.
		2646	if (object *closer = old_container->inv)
		2647	if (closer->type == CLOSE_CON)
		2648	closer->destroy ();
		2649	#endif
		2650
		2651	// make sure the container is available
		2652	esrv_send_item (this, old_container);
		2653
		2654	old_container->flag [FLAG_APPLIED] = false;
		2655	container = 0;
		2656
		2657	// client needs item update to make it work, client bug requires this to be separate
		2658	esrv_update_item (UPD_FLAGS, this, old_container);
		2659
		2660	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2661	play_sound (sound_find ("chest_close"));
		2662	}
		2663
		2664	if (new_container)
		2665	{
		2666	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2667	return;
		2668
		2669	// TODO: this does not seem to serve any purpose anymore?
		2670	#if 0
		2671	// insert the "Close Container" object.
		2672	if (archetype *closer = new_container->other_arch)
		2673	{
		2674	object *closer = new_container->other_arch->instance ();
		2675	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2676	new_container->insert (closer);
2581	}	2677	}
		2678	#endif
		2679
		2680	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2681
		2682	// make sure the container is available, client bug requires this to be separate
		2683	esrv_send_item (this, new_container);
		2684
		2685	new_container->flag [FLAG_APPLIED] = true;
		2686	container = new_container;
		2687
		2688	// client needs flag change
		2689	esrv_update_item (UPD_FLAGS, this, new_container);
		2690	esrv_send_inventory (this, new_container);
		2691	play_sound (sound_find ("chest_open"));
2582		2692	}
2583	if (value)	2693	// else if (!old_container->env && contr && contr->ns)
2584	field->value = value;	2694	// contr->ns->floorbox_reset ();
2585	else {	2695	}
2586	/* Basically, if the archetype has this key set,
2587	* we need to store the null value so when we save
2588	* it, we save the empty value so that when we load,
2589	* we get this value back again.
2590	*/
2591	if (get_ob_key_link (&op->arch->clone, canonical_key))
2592	field->value = 0;
2593	else
2594	{
2595	if (last) last->next = field->next;
2596	else op->key_values = field->next;
2597		2696
2598	delete field;	2697	object *
2599	}	2698	object::force_find (shstr_tmp name)
2600	}	2699	{
2601	return TRUE;	2700	/* cycle through his inventory to look for the MARK we want to
2602	}	2701	* place
2603	/* IF we get here, key doesn't exist */	2702	*/
		2703	for (object *tmp = inv; tmp; tmp = tmp->below)
		2704	if (tmp->type == FORCE && tmp->slaying == name)
		2705	return splay (tmp);
2604		2706
2605	/* No field, we'll have to add it. */	2707	return 0;
		2708	}
		2709
		2710	//-GPL
		2711
		2712	void
		2713	object::force_set_timer (int duration)
		2714	{
		2715	this->duration = 1;
		2716	this->speed_left = -1.f;
		2717
		2718	this->set_speed (duration ? 1.f / duration : 0.f);
		2719	}
		2720
		2721	object *
		2722	object::force_add (shstr_tmp name, int duration)
		2723	{
		2724	if (object *force = force_find (name))
		2725	force->destroy ();
		2726
		2727	object *force = get_archetype (FORCE_NAME);
		2728
		2729	force->slaying = name;
		2730	force->force_set_timer (duration);
		2731	force->flag [FLAG_APPLIED] = true;
		2732
		2733	return insert (force);
		2734	}
		2735
		2736	void
		2737	object::play_sound (faceidx sound) const
		2738	{
		2739	if (!sound)
		2740	return;
		2741
		2742	if (is_on_map ())
		2743	map->play_sound (sound, x, y);
		2744	else if (object *pl = in_player ())
		2745	pl->contr->play_sound (sound);
		2746	}
		2747
		2748	void
		2749	object::say_msg (const char *msg) const
		2750	{
		2751	if (is_on_map ())
		2752	map->say_msg (msg, x, y);
		2753	else if (object *pl = in_player ())
		2754	pl->contr->play_sound (sound);
		2755	}
		2756
		2757	void
		2758	object::make_noise ()
		2759	{
		2760	// we do not model noise in the map, so instead put
		2761	// a temporary light into the noise source
		2762	// could use the map instead, but that's less reliable for our
		2763	// goal, which is to make invisibility a bit harder to exploit
		2764
		2765	// currently only works sensibly for players
		2766	if (!is_player ())
		2767	return;
		2768
		2769	// find old force, or create new one
		2770	object *force = force_find (shstr_noise_force);
		2771
		2772	if (force)
		2773	force->speed_left = -1.f; // patch old speed up
		2774	else
2606		2775	{
2607	if (!add_key) {	2776	force = archetype::get (shstr_noise_force);
2608	return FALSE;	2777
2609	}	2778	force->slaying = shstr_noise_force;
2610	/* There isn't any good reason to store a null	2779	force->stats.food = 1;
2611	* value in the key/value list. If the archetype has	2780	force->speed_left = -1.f;
2612	* this key, then we should also have it, so shouldn't	2781
2613	* be here. If user wants to store empty strings,	2782	force->set_speed (1.f / 4.f);
2614	* should pass in ""	2783	force->flag [FLAG_IS_USED_UP] = true;
2615	*/	2784	force->flag [FLAG_APPLIED] = true;
2616	if (value == NULL) return TRUE;	2785
		2786	insert (force);
2617		2787	}
2618	field = new key_value;	2788	}
		2789
		2790	void object::change_move_type (MoveType mt)
		2791	{
		2792	if (move_type == mt)
		2793	return;
		2794
		2795	if (is_on_map ())
2619		2796	{
2620	field->key = canonical_key;	2797	// we are on the map, so handle move_on/off effects
2621	field->value = value;	2798	remove ();
2622	/* Usual prepend-addition. */	2799	move_type = mt;
2623	field->next = op->key_values;	2800	map->insert (this, x, y, this);
2624	op->key_values = field;
2625		2801	}
		2802	else
		2803	move_type = mt;
		2804	}
		2805
		2806	/* object should be a player.
		2807	* we return the object the player has marked with the 'mark' command
		2808	* below. If no match is found (or object has changed), we return
		2809	* NULL. We leave it up to the calling function to print messages if
		2810	* nothing is found.
		2811	*/
		2812	object *
		2813	object::mark () const
		2814	{
		2815	if (contr && contr->mark && contr->mark->env == this)
		2816	return contr->mark;
		2817	else
2626	return TRUE;	2818	return 0;
2627	}	2819	}
2628		2820
2629	/*	2821	// put marked object first in the inventory
2630	* Updates the key in op to value.	2822	// this is used by identify-like spells so players can influence
2631	*	2823	// the order a bit.
2632	* If add_key is FALSE, this will only update existing keys,	2824	void
2633	* and not add new ones.	2825	object::splay_marked ()
2634	* In general, should be little reason FALSE is ever passed in for add_key
2635	*
2636	* Returns TRUE on success.
2637	*/
2638	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)
2639	{	2826	{
2640	shstr key_ (key);	2827	if (object *marked = mark ())
2641	return set_ob_key_value_s (op, key_, value, add_key);	2828	splay (marked);
2642	}	2829	}
		2830

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