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Comparing deliantra/server/common/object.C (file contents):
Revision 1.2 by root, Fri Aug 25 17:11:52 2006 UTC vs.
Revision 1.239 by root, Wed May 7 13:38:16 2008 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: object.C,v 1.2 2006/08/25 17:11:52 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify
13	it under the terms of the GNU General Public License as published by	9	* it under the terms of the GNU General Public License as published by
14	the Free Software Foundation; either version 2 of the License, or	10	* the Free Software Foundation, either version 3 of the License, or
15	(at your option) any later version.	11	* (at your option) any later version.
16		12	*
17	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	*
25		21	* The authors can be reached via e-mail to <support@deliantra.net>
26	The authors can be reached via e-mail at crossfire-devel@real-time.com
27	*/	22	*/
28		23
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	24	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	25	#include <stdio.h>
35	#include <sys/types.h>	26	#include <sys/types.h>
36	#include <sys/uio.h>	27	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	28	#include <object.h>
39	#include <funcpoint.h>	29	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>	30	#include <loader.h>
42	#ifdef MEMORY_DEBUG
43	int nroffreeobjects = 0;
44	int nrofallocobjects = 0;
45	#undef OBJ_EXPAND
46	#define OBJ_EXPAND 1
47	#else
48	object objarray[STARTMAX]; /* All objects, allocated this way at first */
49	int nroffreeobjects = STARTMAX; /* How many OBs allocated and free (free) */
50	int nrofallocobjects = STARTMAX; /* How many OBs allocated (free + used) */
51	#endif
52		31
53	object *objects; /* Pointer to the list of used objects */	32	#include <bitset>
54	object *free_objects; /* Pointer to the list of unused objects */
55	object *active_objects; /* List of active objects that need to be processed */
56		33
57	void (*object_free_callback)(object *ob);	34	UUID UUID::cur;
		35	static uint64_t seq_next_save;
		36	static const uint64 UUID_GAP = 1<<19;
58		37
		38	objectvec objects;
		39	activevec actives;
		40
59	short freearr_x[SIZEOFFREE]=	41	short freearr_x[SIZEOFFREE] = {
60	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,	42	0,
		43	0, 1, 1, 1, 0, -1, -1, -1,
		44	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
61	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	45	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		46	};
62	short freearr_y[SIZEOFFREE]=	47	short freearr_y[SIZEOFFREE] = {
63	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	48	0,
		49	-1, -1, 0, 1, 1, 1, 0, -1,
		50	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
64	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	51	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
		52	};
65	int maxfree[SIZEOFFREE]=	53	int maxfree[SIZEOFFREE] = {
66	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	54	0,
		55	9, 10, 13, 14, 17, 18, 21, 22,
		56	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
67	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	57	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		58	};
68	int freedir[SIZEOFFREE]= {	59	int freedir[SIZEOFFREE] = {
69	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	60	0,
70	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	61	1, 2, 3, 4, 5, 6, 7, 8,
		62	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		63	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		64	};
71		65
		66	static void
		67	write_uuid (uval64 skip, bool sync)
		68	{
		69	CALL_BEGIN (2);
		70	CALL_ARG_SV (newSVval64 (skip));
		71	CALL_ARG_SV (boolSV (sync));
		72	CALL_CALL ("cf::write_uuid", G_DISCARD);
		73	CALL_END;
		74	}
		75
		76	static void
		77	read_uuid (void)
		78	{
		79	char filename[MAX_BUF];
		80
		81	sprintf (filename, "%s/uuid", settings.localdir);
		82
		83	seq_next_save = 0;
		84
		85	FILE *fp;
		86
		87	if (!(fp = fopen (filename, "r")))
		88	{
		89	if (errno == ENOENT)
		90	{
		91	LOG (llevInfo, "RESET uid to 1\n");
		92	UUID::cur.seq = 0;
		93	write_uuid (UUID_GAP, true);
		94	return;
		95	}
		96
		97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		98	_exit (1);
		99	}
		100
		101	UUID::BUF buf;
		102	buf[0] = 0;
		103	fgets (buf, sizeof (buf), fp);
		104
		105	if (!UUID::cur.parse (buf))
		106	{
		107	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		108	_exit (1);
		109	}
		110
		111	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		112
		113	write_uuid (UUID_GAP, true);
		114	fclose (fp);
		115	}
		116
		117	UUID
		118	UUID::gen ()
		119	{
		120	UUID uid;
		121
		122	uid.seq = ++cur.seq;
		123
		124	if (expect_false (cur.seq >= seq_next_save))
		125	{
		126	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		127	write_uuid (UUID_GAP, false);
		128	}
		129
		130
		131	return uid;
		132	}
		133
		134	void
		135	UUID::init ()
		136	{
		137	read_uuid ();
		138	}
72		139
73	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	140	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		141	static bool
74	static int compare_ob_value_lists_one(const object * wants, const object * has) {	142	compare_ob_value_lists_one (const object *wants, const object *has)
75	key_value * wants_field;	143	{
76
77	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	144	/* n-squared behaviour (see kv_get), but I'm hoping both
78	* objects with lists are rare, and lists stay short. If not, use a	145	* objects with lists are rare, and lists stay short. If not, use a
79	* different structure or at least keep the lists sorted...	146	* different structure or at least keep the lists sorted...
80	*/	147	*/
81		148
82	/* For each field in wants, */	149	/* For each field in wants, */
83	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	150	for (key_value *kv = wants->key_values; kv; kv = kv->next)
84	key_value * has_field;	151	if (has->kv_get (kv->key) != kv->value)
85		152	return false;
86	/* Look for a field in has with the same key. */	153
87	has_field = get_ob_key_link(has, wants_field->key);
88
89	if (has_field == NULL) {
90	/* No field with that name. */
91	return FALSE;
92	}
93
94	/* Found the matching field. */
95	if (has_field->value != wants_field->value) {
96	/* Values don't match, so this half of the comparison is false. */
97	return FALSE;
98	}
99
100	/* If we get here, we found a match. Now for the next field in wants. */
101	}
102
103	/* If we get here, every field in wants has a matching field in has. */	154	/* If we get here, every field in wants has a matching field in has. */
104	return TRUE;	155	return true;
105	}	156	}
106		157
107	/* Returns TRUE if ob1 has the same key_values as ob2. */	158	/* Returns TRUE if ob1 has the same key_values as ob2. */
		159	static bool
108	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	160	compare_ob_value_lists (const object *ob1, const object *ob2)
		161	{
109	/* However, there may be fields in has which aren't partnered in wants,	162	/* However, there may be fields in has which aren't partnered in wants,
110	* so we need to run the comparison *twice*. :(	163	* so we need to run the comparison *twice*. :(
111	*/	164	*/
112	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	165	return compare_ob_value_lists_one (ob1, ob2)
		166	&& compare_ob_value_lists_one (ob2, ob1);
113	}	167	}
114		168
115	/* Function examines the 2 objects given to it, and returns true if	169	/* Function examines the 2 objects given to it, and returns true if
116	* they can be merged together.	170	* they can be merged together.
117	*	171	*
118	* Note that this function appears a lot longer than the macro it	172	* Note that this function appears a lot longer than the macro it
119	* replaces - this is mostly for clarity - a decent compiler should hopefully	173	* replaces - this is mostly for clarity - a decent compiler should hopefully
120	* reduce this to the same efficiency.	174	* reduce this to the same efficiency.
121	*	175	*
122	* Check nrof variable *before* calling CAN_MERGE()	176	* Check nrof variable *before* calling can_merge()
123	*	177	*
124	* Improvements made with merge: Better checking on potion, and also	178	* Improvements made with merge: Better checking on potion, and also
125	* check weight	179	* check weight
126	*/	180	*/
127		181	bool object::can_merge_slow (object *ob1, object *ob2)
128	int CAN_MERGE(object *ob1, object *ob2) {	182	{
129
130	/* A couple quicksanity checks */	183	/* A couple quicksanity checks */
131	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	184	if (ob1 == ob2
		185	|| ob1->type != ob2->type
		186	|| ob1->speed != ob2->speed
		187	|| ob1->value != ob2->value
		188	|| ob1->name != ob2->name)
		189	return 0;
132		190
133	if (ob1->speed != ob2->speed) return 0;	191	/* Do not merge objects if nrof would overflow. First part checks
		192	* for unsigned overflow (2c), second part checks whether the result
		193	* would fit into a 32 bit signed int, which is often used to hold
		194	* nrof values.
		195	*/
		196	if (~ob1->nrof < ob2->nrof || ob1->nrof + ob2->nrof > (1UL << 31))
		197	return 0;
		198
		199	/* If the objects have been identified, set the BEEN_APPLIED flag.
		200	* This is to the comparison of the flags below will be OK. We
		201	* just can't ignore the been applied or identified flags, as they
		202	* are not equal - just if it has been identified, the been_applied
		203	* flags lose any meaning.
		204	*/
		205	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		206	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		207
		208	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		209	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		210
		211	if (ob1->arch->name != ob2->arch->name
		212	|| ob1->name != ob2->name
		213	|| ob1->title != ob2->title
		214	|| ob1->msg != ob2->msg
		215	|| ob1->weight != ob2->weight
		216	|| ob1->attacktype != ob2->attacktype
		217	|| ob1->magic != ob2->magic
		218	|| ob1->slaying != ob2->slaying
		219	|| ob1->skill != ob2->skill
		220	|| ob1->value != ob2->value
		221	|| ob1->animation_id != ob2->animation_id
		222	|| ob1->client_type != ob2->client_type
		223	|| ob1->materialname != ob2->materialname
		224	|| ob1->lore != ob2->lore
		225	|| ob1->subtype != ob2->subtype
		226	|| ob1->move_type != ob2->move_type
		227	|| ob1->move_block != ob2->move_block
		228	|| ob1->move_allow != ob2->move_allow
		229	|| ob1->move_on != ob2->move_on
		230	|| ob1->move_off != ob2->move_off
		231	|| ob1->move_slow != ob2->move_slow
		232	|| ob1->move_slow_penalty != ob2->move_slow_penalty
		233	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		234	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
		235	return 0;
		236
		237	if ((ob1->flag ^ ob2->flag)
		238	.reset (FLAG_INV_LOCKED)
		239	.reset (FLAG_CLIENT_SENT)
		240	.reset (FLAG_REMOVED)
		241	.any ())
		242	return 0;
		243
		244	/* This is really a spellbook check - we should in general
		245	* not merge objects with real inventories, as splitting them
		246	* is hard.
		247	*/
		248	if (ob1->inv || ob2->inv)
		249	{
		250	if (!(ob1->inv && ob2->inv))
		251	return 0; /* inventories differ in length */
		252
		253	if (ob1->inv->below || ob2->inv->below)
		254	return 0; /* more than one object in inv */
		255
		256	if (!object::can_merge (ob1->inv, ob2->inv))
		257	return 0; /* inventory objects differ */
		258
		259	/* inventory ok - still need to check rest of this object to see
		260	* if it is valid.
		261	*/
		262	}
		263
		264	/* Don't merge objects that are applied. With the new 'body' code,
		265	* it is possible for most any character to have more than one of
		266	* some items equipped, and we don't want those to merge.
		267	*/
		268	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		269	return 0;
		270
134	/* Note sure why the following is the case - either the object has to	271	/* Note sure why the following is the case - either the object has to
135	* be animated or have a very low speed. Is this an attempted monster	272	* be animated or have a very low speed. Is this an attempted monster
136	* check?	273	* check?
137	*/	274	*/
138	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	275	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
139	return 0;
140
141	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
142	* value could not be stored in a sint32 (which unfortunately sometimes is
143	* used to store nrof).
144	*/
145	if (ob1->nrof+ob2->nrof >= 1UL<<31)
146	return 0;
147
148	/* This is really a spellbook check - really, we should
149	* check all objects in the inventory.
150	*/
151	if (ob1->inv || ob2->inv) {
152	/* if one object has inventory but the other doesn't, not equiv */
153	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
154
155	/* Now check to see if the two inventory objects could merge */
156	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
157
158	/* inventory ok - still need to check rest of this object to see
159	* if it is valid.
160	*/
161	}
162
163	/* If the objects have been identified, set the BEEN_APPLIED flag.
164	* This is to the comparison of the flags below will be OK. We
165	* just can't ignore the been applied or identified flags, as they
166	* are not equal - just if it has been identified, the been_applied
167	* flags lose any meaning.
168	*/
169	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
170	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
171
172	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
173	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
174
175
176	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
177	* being locked in inventory should prevent merging.
178	* 0x4 in flags3 is CLIENT_SENT
179	*/
180	if ((ob1->arch != ob2->arch) ||
181	(ob1->flags[0] != ob2->flags[0]) ||
182	(ob1->flags[1] != ob2->flags[1]) ||
183	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
184	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
185	(ob1->name != ob2->name) ||
186	(ob1->title != ob2->title) ||
187	(ob1->msg != ob2->msg) ||
188	(ob1->weight != ob2->weight) ||
189	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
190	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
191	(ob1->attacktype != ob2->attacktype) ||
192	(ob1->magic != ob2->magic) ||
193	(ob1->slaying != ob2->slaying) ||
194	(ob1->skill != ob2->skill) ||
195	(ob1->value != ob2->value) ||
196	(ob1->animation_id != ob2->animation_id) ||
197	(ob1->client_type != ob2->client_type) ||
198	(ob1->materialname != ob2->materialname) ||
199	(ob1->lore != ob2->lore) ||
200	(ob1->subtype != ob2->subtype) ||
201	(ob1->move_type != ob2->move_type) ||
202	(ob1->move_block != ob2->move_block) ||
203	(ob1->move_allow != ob2->move_allow) ||
204	(ob1->move_on != ob2->move_on) ||
205	(ob1->move_off != ob2->move_off) ||
206	(ob1->move_slow != ob2->move_slow) ||
207	(ob1->move_slow_penalty != ob2->move_slow_penalty)
208	)
209	return 0;	276	return 0;
210		277
211	/* Don't merge objects that are applied. With the new 'body' code,
212	* it is possible for most any character to have more than one of
213	* some items equipped, and we don't want those to merge.
214	*/
215	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))
216	return 0;
217
218	switch (ob1->type) {	278	switch (ob1->type)
		279	{
219	case SCROLL:	280	case SCROLL:
220	if (ob1->level != ob2->level) return 0;	281	if (ob1->level != ob2->level)
		282	return 0;
221	break;	283	break;
222
223	}	284	}
		285
224	if (ob1->key_values != NULL || ob2->key_values != NULL) {	286	if (ob1->key_values || ob2->key_values)
		287	{
225	/* At least one of these has key_values. */	288	/* At least one of these has key_values. */
226	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {	289	if ((!ob1->key_values) != (!ob2->key_values))
227	/* One has fields, but the other one doesn't. */	290	return 0; /* One has fields, but the other one doesn't. */
		291
		292	if (!compare_ob_value_lists (ob1, ob2))
		293	return 0;
		294	}
		295
		296	if (ob1->self || ob2->self)
		297	{
		298	ob1->optimise ();
		299	ob2->optimise ();
		300
		301	if (ob1->self || ob2->self)
		302	{
		303	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		304	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		305
		306	if (k1 != k2)
228	return 0;	307	return 0;
229	} else if (!compare_ob_value_lists(ob1, ob2)) {	308
		309	if (k1 == 0)
		310	return 1;
		311
		312	if (!cfperl_can_merge (ob1, ob2))
230	return 0;	313	return 0;
231	}	314	}
232	}	315	}
233		316
234	/* Everything passes, must be OK. */	317	/* Everything passes, must be OK. */
235	return 1;	318	return 1;
236	}	319	}
237		320
		321	// find player who can see this object
		322	object *
		323	object::visible_to () const
		324	{
		325	if (client_visible () && !flag [FLAG_REMOVED])
		326	{
		327	// see if we are in a container of sorts
		328	if (env)
		329	{
		330	// the player inventory itself is always visible
		331	if (env->type == PLAYER)
		332	return env;
		333
		334	// else a player could have our env open
		335	object *envest = env->outer_env ();
		336
		337	// the player itself is always on a map, so we will find him here
		338	// even if our inv is in a player.
		339	if (envest->is_on_map ())
		340	if (object *pl = envest->ms ().player ())
		341	if (pl->container == env)
		342	return pl;
		343	}
		344	else
		345	{
		346	// maybe there is a player standing on the same mapspace
		347	// this will catch the case where "this" is a player
		348	if (object *pl = ms ().player ())
		349	if (!pl->container || this == pl->container)
		350	return pl;
		351	}
		352	}
		353
		354	return 0;
		355	}
		356
		357	// adjust weight per container type ("of holding")
		358	static sint32
		359	weight_adjust_for (object *op, sint32 weight)
		360	{
		361	return op->type == CONTAINER
		362	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		363	: weight;
		364	}
		365
238	/*	366	/*
		367	* adjust_weight(object, weight) adds the specified weight to an object,
		368	* and also updates how much the environment(s) is/are carrying.
		369	*/
		370	static void
		371	adjust_weight (object *op, sint32 weight)
		372	{
		373	while (op)
		374	{
		375	// adjust by actual difference to account for rounding errors
		376	// i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
		377	weight = weight_adjust_for (op, op->carrying)
		378	- weight_adjust_for (op, op->carrying - weight);
		379
		380	if (!weight)
		381	return;
		382
		383	op->carrying += weight;
		384
		385	if (object *pl = op->visible_to ())
		386	if (pl != op) // player is handled lazily
		387	esrv_update_item (UPD_WEIGHT, pl, op);
		388
		389	op = op->env;
		390	}
		391	}
		392
		393	/*
239	* sum_weight() is a recursive function which calculates the weight	394	* this is a recursive function which calculates the weight
240	* an object is carrying. It goes through in figures out how much	395	* an object is carrying. It goes through op and figures out how much
241	* containers are carrying, and sums it up.	396	* containers are carrying, and sums it up.
242	*/	397	*/
243	signed long sum_weight(object *op) {	398	void
244	signed long sum;	399	object::update_weight ()
245	object *inv;	400	{
246	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	401	sint32 sum = 0;
		402
		403	for (object *op = inv; op; op = op->below)
		404	{
247	if (inv->inv)	405	if (op->inv)
248	sum_weight(inv);	406	op->update_weight ();
249	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	407
		408	sum += op->total_weight ();
250	}	409	}
251	if (op->type == CONTAINER && op->stats.Str)	410
252	sum = (sum * (100 - op->stats.Str))/100;	411	sum = weight_adjust_for (this, sum);
253	if(op->carrying != sum)	412
		413	if (sum != carrying)
		414	{
254	op->carrying = sum;	415	carrying = sum;
255	return sum;
256	}
257		416
		417	if (object *pl = visible_to ())
		418	if (pl != this) // player is handled lazily
		419	esrv_update_item (UPD_WEIGHT, pl, this);
		420	}
		421	}
		422
258	/**	423	/*
259	* Return the outermost environment object for a given object.	424	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
260	*/	425	*/
261		426	char *
262	object *object_get_env_recursive (object *op) {
263	while (op->env != NULL)
264	op = op->env;
265	return op;
266	}
267
268	/*
269	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
270	* a better check. We basically keeping traversing up until we can't
271	* or find a player.
272	*/
273
274	object *is_player_inv (object *op) {
275	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
276	if (op->env==op)
277	op->env = NULL;
278	return op;
279	}
280
281	/*
282	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
283	* Some error messages.
284	* The result of the dump is stored in the static global errmsg array.
285	*/
286
287	void dump_object2(object *op) {
288	char *cp;
289	/* object *tmp;*/
290
291	if(op->arch!=NULL) {
292	strcat(errmsg,"arch ");
293	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
294	strcat(errmsg,"\n");
295	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
296	strcat(errmsg,cp);
297	#if 0
298	/* Don't dump player diffs - they are too long, mostly meaningless, and
299	* will overflow the buffer.
300	* Changed so that we don't dump inventory either. This may
301	* also overflow the buffer.
302	*/
303	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
304	strcat(errmsg,cp);
305	for (tmp=op->inv; tmp; tmp=tmp->below)
306	dump_object2(tmp);
307	#endif
308	strcat(errmsg,"end\n");
309	} else {
310	strcat(errmsg,"Object ");
311	if (op->name==NULL) strcat(errmsg, "(null)");
312	else strcat(errmsg,op->name);
313	strcat(errmsg,"\n");
314	#if 0
315	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
316	strcat(errmsg,cp);
317	for (tmp=op->inv; tmp; tmp=tmp->below)
318	dump_object2(tmp);
319	#endif
320	strcat(errmsg,"end\n");
321	}
322	}
323
324	/*
325	* Dumps an object. Returns output in the static global errmsg array.
326	*/
327
328	void dump_object(object *op) {	427	dump_object (object *op)
329	if(op==NULL) {
330	strcpy(errmsg,"[NULL pointer]");
331	return;
332	}
333	errmsg[0]='\0';
334	dump_object2(op);
335	}
336
337	/* GROS - Dumps an object. Return the result into a string */
338	/* Note that no checking is done for the validity of the target string, so */
339	/* you need to be sure that you allocated enough space for it. */
340	void dump_me(object *op, char *outstr)
341	{	428	{
342	char *cp;	429	if (!op)
		430	return strdup ("[NULLOBJ]");
343		431
344	if(op==NULL)	432	object_freezer freezer;
345	{	433	op->write (freezer);
346	strcpy(outstr,"[NULL pointer]");	434	return freezer.as_string ();
347	return;
348	}
349	outstr[0]='\0';
350
351	if(op->arch!=NULL)
352	{
353	strcat(outstr,"arch ");
354	strcat(outstr,op->arch->name?op->arch->name:"(null)");
355	strcat(outstr,"\n");
356	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
357	strcat(outstr,cp);
358	strcat(outstr,"end\n");
359	}
360	else
361	{
362	strcat(outstr,"Object ");
363	if (op->name==NULL)
364	strcat(outstr, "(null)");
365	else
366	strcat(outstr,op->name);
367	strcat(outstr,"\n");
368	strcat(outstr,"end\n");
369	}
370	}
371
372	/*
373	* This is really verbose...Can be triggered by the P key while in DM mode.
374	* All objects are dumped to stderr (or alternate logfile, if in server-mode)
375	*/
376
377	void dump_all_objects(void) {
378	object *op;
379	for(op=objects;op!=NULL;op=op->next) {
380	dump_object(op);
381	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
382	}
383	}	435	}
384		436
385	/*	437	/*
386	* get_nearest_part(multi-object, object 2) returns the part of the	438	* get_nearest_part(multi-object, object 2) returns the part of the
387	* multi-object 1 which is closest to the second object.	439	* multi-object 1 which is closest to the second object.
388	* If it's not a multi-object, it is returned.	440	* If it's not a multi-object, it is returned.
389	*/	441	*/
390		442	object *
391	object *get_nearest_part(object *op, const object *pl) {	443	get_nearest_part (object *op, const object *pl)
		444	{
392	object *tmp,*closest;	445	object *tmp, *closest;
393	int last_dist,i;	446	int last_dist, i;
		447
394	if(op->more==NULL)	448	if (!op->more)
395	return op;	449	return op;
		450
396	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	451	for (last_dist = distance (op, pl), closest = op, tmp = op->more;
		452	tmp;
		453	tmp = tmp->more)
397	if((i=distance(tmp,pl))<last_dist)	454	if ((i = distance (tmp, pl)) < last_dist)
398	closest=tmp,last_dist=i;	455	closest = tmp, last_dist = i;
		456
399	return closest;	457	return closest;
400	}	458	}
401		459
402	/*	460	/*
403	* Returns the object which has the count-variable equal to the argument.	461	* Returns the object which has the count-variable equal to the argument.
		462	* VERRRY slow.
404	*/	463	*/
405		464	object *
406	object *find_object(tag_t i) {	465	find_object (tag_t i)
407	object *op;	466	{
408	for(op=objects;op!=NULL;op=op->next)	467	for_all_objects (op)
409	if(op->count==i)	468	if (op->count == i)
410	break;
411	return op;	469	return op;
		470
		471	return 0;
412	}	472	}
413		473
414	/*	474	/*
415	* Returns the first object which has a name equal to the argument.	475	* Returns the first object which has a name equal to the argument.
416	* Used only by the patch command, but not all that useful.	476	* Used only by the patch command, but not all that useful.
417	* Enables features like "patch <name-of-other-player> food 999"	477	* Enables features like "patch <name-of-other-player> food 999"
418	*/	478	*/
419		479	object *
420	object *find_object_name(const char *str) {	480	find_object_name (const char *str)
421	const char *name=add_string(str);	481	{
		482	shstr_cmp str_ (str);
422	object *op;	483	object *op;
423	for(op=objects;op!=NULL;op=op->next)	484
		485	for_all_objects (op)
424	if(op->name==name)	486	if (op->name == str_)
425	break;	487	break;
426	free_string(name);	488
427	return op;	489	return op;
428	}	490	}
429
430	void free_all_object_data(void) {
431	#ifdef MEMORY_DEBUG
432	object *op, *next;
433
434	for (op=free_objects; op!=NULL; ) {
435	next=op->next;
436	free(op);
437	nrofallocobjects--;
438	nroffreeobjects--;
439	op=next;
440	}
441	#endif
442	LOG(llevDebug,"%d allocated objects, %d free objects, STARMAX=%d\n",
443	nrofallocobjects, nroffreeobjects,STARTMAX);
444	}
445
446	/*
447	* Returns the object which this object marks as being the owner.
448	* A id-scheme is used to avoid pointing to objects which have been
449	* freed and are now reused. If this is detected, the owner is
450	* set to NULL, and NULL is returned.
451	* Changed 2004-02-12 - if the player is setting at the play again
452	* prompt, he is removed, and we don't want to treat him as an owner of
453	* anything, so check removed flag. I don't expect that this should break
454	* anything - once an object is removed, it is basically dead anyways.
455	*/
456
457	object *get_owner(object *op) {
458	if(op->owner==NULL)
459	return NULL;
460
461	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
462	op->owner->count==op->ownercount)
463	return op->owner;
464
465	op->owner=NULL;
466	op->ownercount=0;
467	return NULL;
468	}
469
470	void clear_owner(object *op)
471	{
472	if (!op) return;
473
474	if (op->owner && op->ownercount == op->owner->count)
475	op->owner->refcount--;
476
477	op->owner = NULL;
478	op->ownercount = 0;
479	}
480
481
482		491
483	/*	492	/*
484	* Sets the owner and sets the skill and exp pointers to owner's current	493	* Sets the owner and sets the skill and exp pointers to owner's current
485	* skill and experience objects.	494	* skill and experience objects.
486	*/	495	* ACTUALLY NO! investigate! TODO
487	void set_owner (object *op, object *owner)
488	{
489	if(owner==NULL||op==NULL)
490	return;
491
492	/* next line added to allow objects which own objects */
493	/* Add a check for ownercounts in here, as I got into an endless loop
494	* with the fireball owning a poison cloud which then owned the
495	* fireball. I believe that was caused by one of the objects getting
496	* freed and then another object replacing it. Since the ownercounts
497	* didn't match, this check is valid and I believe that cause is valid.
498	*/
499	while (owner->owner && owner!=owner->owner &&
500	owner->ownercount==owner->owner->count) owner=owner->owner;
501
502	/* IF the owner still has an owner, we did not resolve to a final owner.
503	* so lets not add to that.
504	*/
505	if (owner->owner) return;
506
507	op->owner=owner;
508
509	op->ownercount=owner->count;
510	owner->refcount++;
511
512	}
513
514	/* Set the owner to clone's current owner and set the skill and experience
515	* objects to clone's objects (typically those objects that where the owner's
516	* current skill and experience objects at the time when clone's owner was
517	* set - not the owner's current skill and experience objects).
518	*
519	* Use this function if player created an object (e.g. fire bullet, swarm
520	* spell), and this object creates further objects whose kills should be
521	* accounted for the player's original skill, even if player has changed
522	* skills meanwhile.
523	*/
524	void copy_owner (object *op, object *clone)
525	{
526	object *owner = get_owner (clone);
527	if (owner == NULL) {
528	/* players don't have owners - they own themselves. Update
529	* as appropriate.
530	*/	496	*/
531	if (clone->type == PLAYER) owner=clone;	497	void
532	else return;	498	object::set_owner (object *owner)
		499	{
		500	// allow objects which own objects
		501	if (owner)
		502	while (owner->owner)
		503	owner = owner->owner;
		504
		505	if (flag [FLAG_FREED])
533	}	506	{
534	set_owner(op, owner);	507	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
		508	return;
		509	}
535		510
		511	this->owner = owner;
536	}	512	}
537		513
538	/*	514	int
539	* Resets vital variables in an object	515	object::slottype () const
540	*/	516	{
		517	if (type == SKILL)
		518	{
		519	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
		520	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		521	}
		522	else
		523	{
		524	if (slot [body_combat].info) return slot_combat;
		525	if (slot [body_range ].info) return slot_ranged;
		526	}
		527
		528	return slot_none;
		529	}
541		530
542	void reset_object(object *op) {	531	bool
		532	object::change_weapon (object *ob)
		533	{
		534	if (current_weapon == ob)
		535	return true;
543		536
544	op->name = NULL;	537	if (chosen_skill)
545	op->name_pl = NULL;	538	chosen_skill->flag [FLAG_APPLIED] = false;
546	op->title = NULL;	539
547	op->race = NULL;	540	current_weapon = ob;
548	op->slaying = NULL;	541	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
549	op->skill = NULL;	542
550	op->msg = NULL;	543	if (chosen_skill)
551	op->materialname = NULL;	544	chosen_skill->flag [FLAG_APPLIED] = true;
552	op->lore = NULL;	545
553	op->current_weapon_script = NULL;	546	update_stats ();
554	clear_object(op);	547
		548	if (ob)
		549	{
		550	// now check wether any body locations became invalid, in which case
		551	// we cannot apply the weapon at the moment.
		552	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		553	if (slot[i].used < 0)
		554	{
		555	current_weapon = chosen_skill = 0;
		556	update_stats ();
		557
		558	new_draw_info_format (NDI_UNIQUE, 0, this,
		559	"You try to balance all your items at once, "
		560	"but the %s is just too much for your body. "
		561	"[You need to unapply some items first.]", &ob->name);
		562	return false;
		563	}
		564
		565	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		566	}
		567	else
		568	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		569
		570	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
		571	{
		572	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		573	&name, ob->debug_desc ());
		574	return false;
		575	}
		576
		577	return true;
555	}	578	}
556		579
557	/* Zero the key_values on op, decrementing the shared-string	580	/* Zero the key_values on op, decrementing the shared-string
558	* refcounts and freeing the links.	581	* refcounts and freeing the links.
559	*/	582	*/
		583	static void
560	static void free_key_values(object * op) {	584	free_key_values (object *op)
561	key_value * i;	585	{
562	key_value * next = NULL;	586	for (key_value *i = op->key_values; i; )
563		587	{
564	if (op->key_values == NULL) return;	588	key_value *next = i->next;
		589	delete i;
		590
		591	i = next;
565		592	}
566	for (i = op->key_values; i != NULL; i = next) {	593
567	/* Store next *first*. */
568	next = i->next;
569
570	if (i->key) FREE_AND_CLEAR_STR(i->key);
571	if (i->value) FREE_AND_CLEAR_STR(i->value);
572	i->next = NULL;
573	free(i);
574	}
575
576	op->key_values = NULL;	594	op->key_values = 0;
577	}	595	}
578		596
579
580	/*	597	/*
581	* clear_object() frees everything allocated by an object, and also
582	* clears all variables and flags to default settings.
583	*/
584
585	void clear_object(object *op) {
586
587	if (object_free_callback)
588	object_free_callback (op);
589
590	event *evt;
591	event *evt2;
592
593	/* redo this to be simpler/more efficient. Was also seeing
594	* crashes in the old code. Move this to the top - am
595	* seeing periodic crashes in this code, and would like to have
596	* as much info available as possible (eg, object name).
597	*/
598	for (evt = op->events; evt; evt=evt2) {
599	evt2 = evt->next;
600
601	if (evt->hook != NULL) FREE_AND_CLEAR_STR(evt->hook);
602	if (evt->plugin != NULL) FREE_AND_CLEAR_STR(evt->plugin);
603	if (evt->options != NULL) FREE_AND_CLEAR_STR(evt->options);
604
605	free(evt);
606	}
607	op->events = NULL;
608
609	free_key_values(op);
610
611	/* the memset will clear all these values for us, but we need
612	* to reduce the refcount on them.
613	*/
614	if (op->name!=NULL) FREE_AND_CLEAR_STR(op->name);
615	if (op->name_pl!=NULL) FREE_AND_CLEAR_STR(op->name_pl);
616	if (op->title != NULL) FREE_AND_CLEAR_STR(op->title);
617	if (op->race!=NULL) FREE_AND_CLEAR_STR(op->race);
618	if (op->slaying!=NULL) FREE_AND_CLEAR_STR(op->slaying);
619	if (op->skill!=NULL) FREE_AND_CLEAR_STR(op->skill);
620	if (op->msg!=NULL) FREE_AND_CLEAR_STR(op->msg);
621	if (op->lore!=NULL) FREE_AND_CLEAR_STR(op->lore);
622	if (op->materialname!= NULL) FREE_AND_CLEAR_STR(op->materialname);
623
624
625	memset((void*)op, 0, sizeof (object_special));
626	/* Below here, we clear things that are not done by the memset,
627	* or set default values that are not zero.
628	*/
629	/* This is more or less true */
630	SET_FLAG(op, FLAG_REMOVED);
631
632
633	op->contr = NULL;
634	op->below=NULL;
635	op->above=NULL;
636	op->inv=NULL;
637	op->events=NULL;
638	op->container=NULL;
639	op->env=NULL;
640	op->more=NULL;
641	op->head=NULL;
642	op->map=NULL;
643	op->refcount=0;
644	op->active_next = NULL;
645	op->active_prev = NULL;
646	/* What is not cleared is next, prev, and count */
647
648	op->expmul=1.0;
649	op->face = blank_face;
650	op->attacked_by_count = (tag_t) -1;
651	if (settings.casting_time)
652	op->casting_time = -1;
653
654	}
655
656	/*
657	* copy object first frees everything allocated by the second object,	598	* copy_to first frees everything allocated by the dst object,
658	* and then copies the contends of the first object into the second	599	* and then copies the contents of itself into the second
659	* object, allocating what needs to be allocated. Basically, any	600	* object, allocating what needs to be allocated. Basically, any
660	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	601	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
661	* if the first object is freed, the pointers in the new object	602	* if the first object is freed, the pointers in the new object
662	* will point at garbage.	603	* will point at garbage.
663	*/	604	*/
		605	void
		606	object::copy_to (object *dst)
		607	{
		608	dst->remove ();
		609	*(object_copy *)dst = *this;
		610	dst->flag [FLAG_REMOVED] = true;
664		611
665	void copy_object(object *op2, object *op) {
666	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);
667	event *evt, *evt2, *evt_new;
668
669	if (object_free_callback)
670	object_free_callback (op);
671
672	// callback registries and self are empty for copied objects
673	// this ought to change in the future
674
675	/* Decrement the refcounts, but don't bother zeroing the fields;
676	they'll be overwritten by memcpy. */
677	if(op->name!=NULL) free_string(op->name);
678	if(op->name_pl!=NULL) free_string(op->name_pl);
679	if(op->title!=NULL) free_string(op->title);
680	if(op->race!=NULL) free_string(op->race);
681	if(op->slaying!=NULL) free_string(op->slaying);
682	if(op->skill!=NULL) free_string(op->skill);
683	if(op->msg!=NULL) free_string(op->msg);
684	if(op->lore!=NULL) free_string(op->lore);
685	if(op->materialname != NULL) free_string(op->materialname);
686	if(op->custom_name != NULL) free_string(op->custom_name);
687
688	/* Basically, same code as from clear_object() */
689	for (evt = op->events; evt; evt=evt2) {
690	evt2 = evt->next;
691
692	if (evt->hook != NULL) FREE_AND_CLEAR_STR(evt->hook);
693	if (evt->plugin != NULL) FREE_AND_CLEAR_STR(evt->plugin);
694	if (evt->options != NULL) FREE_AND_CLEAR_STR(evt->options);
695
696	free(evt);
697	}
698	op->events = NULL;
699
700	free_key_values(op);
701
702	*(object_special *)op = *(object_special *)op2;
703
704	if(is_freed) SET_FLAG(op,FLAG_FREED);
705	if(is_removed) SET_FLAG(op,FLAG_REMOVED);
706	if(op->name!=NULL) add_refcount(op->name);
707	if(op->name_pl!=NULL) add_refcount(op->name_pl);
708	if(op->title!=NULL) add_refcount(op->title);
709	if(op->race!=NULL) add_refcount(op->race);
710	if(op->slaying!=NULL) add_refcount(op->slaying);
711	if(op->skill!=NULL) add_refcount(op->skill);
712	if(op->lore!=NULL) add_refcount(op->lore);
713	if(op->msg!=NULL) add_refcount(op->msg);
714	if(op->custom_name!=NULL) add_refcount(op->custom_name);
715	if (op->materialname != NULL) add_refcount(op->materialname);
716
717	if((op2->speed<0) && !editor)
718	op->speed_left=op2->speed_left-RANDOM()%200/100.0;
719
720	/* Copy over event information */
721	evt2 = NULL;
722	for (evt = op2->events; evt; evt=evt->next) {
723	evt_new = (event *) malloc(sizeof(event));
724	memcpy(evt_new, evt, sizeof(event));
725	if (evt_new->hook) add_refcount(evt_new->hook);
726	if (evt_new->plugin) add_refcount(evt_new->plugin);
727	if (evt_new->options) add_refcount(evt_new->options);
728	evt_new->next = NULL;
729
730	/* Try to be a little clever here, and store away the
731	* last event we copied, so that its simpler to update the
732	* pointer.
733	*/
734	if (evt2)
735	evt2->next = evt_new;
736	else
737	op->events = evt_new;
738
739	evt2 = evt_new;
740	}
741	/* Copy over key_values, if any. */	612	/* Copy over key_values, if any. */
742	if (op2->key_values != NULL) {	613	if (key_values)
743	key_value * tail = NULL;	614	{
744	key_value * i;	615	key_value *tail = 0;
		616	dst->key_values = 0;
745		617
746	op->key_values = NULL;	618	for (key_value *i = key_values; i; i = i->next)
		619	{
		620	key_value *new_link = new key_value;
747		621
748	for (i = op2->key_values; i != NULL; i = i->next) {
749	key_value * new_link = (key_value *) malloc(sizeof(key_value));
750
751	new_link->next = NULL;	622	new_link->next = 0;
752	new_link->key = add_refcount(i->key);	623	new_link->key = i->key;
753	if (i->value)	624	new_link->value = i->value;
754	new_link->value = add_refcount(i->value);
755	else
756	new_link->value = NULL;
757		625
758	/* Try and be clever here, too. */	626	/* Try and be clever here, too. */
759	if (op->key_values == NULL) {	627	if (!dst->key_values)
760	op->key_values = new_link;	628	{
761	tail = new_link;	629	dst->key_values = new_link;
762	} else {	630	tail = new_link;
763	tail->next = new_link;	631	}
764	tail = new_link;	632	else
		633	{
		634	tail->next = new_link;
		635	tail = new_link;
		636	}
		637	}
765	}	638	}
766	}
767	}
768		639
769	update_ob_speed(op);	640	if (speed < 0)
770	}	641	dst->speed_left -= rndm ();
771		642
772	/*	643	dst->set_speed (dst->speed);
773	* expand_objects() allocates more objects for the list of unused objects.
774	* It is called from get_object() if the unused list is empty.
775	*/
776
777	void expand_objects(void) {
778	int i;
779	object *obj;
780	obj = (object *) CALLOC(OBJ_EXPAND,sizeof(object));
781
782	if(obj==NULL)
783	fatal(OUT_OF_MEMORY);
784	free_objects=obj;
785	obj[0].prev=NULL;
786	obj[0].next= &obj[1],
787	SET_FLAG(&(obj[0]), FLAG_REMOVED);
788	SET_FLAG(&(obj[0]), FLAG_FREED);
789
790	for(i=1;i<OBJ_EXPAND-1;i++) {
791	obj[i].next= &obj[i+1],
792	obj[i].prev= &obj[i-1],
793	SET_FLAG(&(obj[i]), FLAG_REMOVED);
794	SET_FLAG(&(obj[i]), FLAG_FREED);
795	}
796	obj[OBJ_EXPAND-1].prev= &obj[OBJ_EXPAND-2],
797	obj[OBJ_EXPAND-1].next=NULL,
798	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_REMOVED);
799	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_FREED);
800
801	nrofallocobjects += OBJ_EXPAND;
802	nroffreeobjects += OBJ_EXPAND;
803	}	644	}
804		645
805	/*	646	void
806	* get_object() grabs an object from the list of unused objects, makes	647	object::instantiate ()
807	* sure it is initialised, and returns it.	648	{
808	* If there are no free objects, expand_objects() is called to get more.	649	if (!uuid.seq) // HACK
809	*/	650	uuid = UUID::gen ();
810		651
811	object *get_object(void) {	652	speed_left = -0.1f;
812	object *op;	653	/* copy the body_info to the body_used - this is only really
813		654	* need for monsters, but doesn't hurt to do it for everything.
814	if(free_objects==NULL) {	655	* by doing so, when a monster is created, it has good starting
815	expand_objects();	656	* values for the body_used info, so when items are created
816	}	657	* for it, they can be properly equipped.
817	op=free_objects;
818	#ifdef MEMORY_DEBUG
819	/* The idea is hopefully by doing a realloc, the memory
820	* debugging program will now use the current stack trace to
821	* report leaks.
822	*/	658	*/
823	op = realloc(op, sizeof(object));	659	for (int i = NUM_BODY_LOCATIONS; i--; )
824	SET_FLAG(op, FLAG_REMOVED);	660	slot[i].used = slot[i].info;
825	SET_FLAG(op, FLAG_FREED);
826	#endif
827		661
828	if(!QUERY_FLAG(op,FLAG_FREED)) {	662	attachable::instantiate ();
829	LOG(llevError,"Fatal: Getting busy object.\n");	663	}
830	}	664
831	free_objects=op->next;	665	object *
832	if(free_objects!=NULL)	666	object::clone ()
833	free_objects->prev=NULL;	667	{
834	op->count= ++ob_count;	668	object *neu = create ();
835	op->name=NULL;	669	copy_to (neu);
836	op->name_pl=NULL;	670	neu->map = map; // not copied by copy_to
837	op->title=NULL;
838	op->race=NULL;
839	op->slaying=NULL;
840	op->skill = NULL;
841	op->lore=NULL;
842	op->msg=NULL;
843	op->materialname=NULL;
844	op->next=objects;
845	op->prev=NULL;
846	op->active_next = NULL;
847	op->active_prev = NULL;
848	if(objects!=NULL)
849	objects->prev=op;
850	objects=op;
851	clear_object(op);
852	SET_FLAG(op,FLAG_REMOVED);
853	nroffreeobjects--;
854	return op;	671	return neu;
855	}	672	}
856		673
857	/*	674	/*
858	* If an object with the IS_TURNABLE() flag needs to be turned due	675	* If an object with the IS_TURNABLE() flag needs to be turned due
859	* to the closest player being on the other side, this function can	676	* to the closest player being on the other side, this function can
860	* be called to update the face variable, _and_ how it looks on the map.	677	* be called to update the face variable, _and_ how it looks on the map.
861	*/	678	*/
862		679	void
863	void update_turn_face(object *op) {	680	update_turn_face (object *op)
		681	{
864	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	682	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
865	return;	683	return;
		684
866	SET_ANIMATION(op, op->direction);	685	SET_ANIMATION (op, op->direction);
867	update_object(op,UP_OBJ_FACE);	686	update_object (op, UP_OBJ_FACE);
868	}	687	}
869		688
870	/*	689	/*
871	* Updates the speed of an object. If the speed changes from 0 to another	690	* Updates the speed of an object. If the speed changes from 0 to another
872	* value, or vice versa, then add/remove the object from the active list.	691	* value, or vice versa, then add/remove the object from the active list.
873	* This function needs to be called whenever the speed of an object changes.	692	* This function needs to be called whenever the speed of an object changes.
874	*/	693	*/
875		694	void
876	void update_ob_speed(object *op) {	695	object::set_speed (float speed)
877	extern int arch_init;	696	{
878		697	if (flag [FLAG_FREED] && speed)
879	/* No reason putting the archetypes objects on the speed list,	698	{
880	* since they never really need to be updated.
881	*/
882
883	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
884	LOG(llevError,"Object %s is freed but has speed.\n", op->name);	699	LOG (llevError, "Object %s is freed but has speed.\n", &name);
885	#ifdef MANY_CORES	700	speed = 0;
886	abort();
887	#else
888	op->speed = 0;
889	#endif
890	}	701	}
891	if (arch_init) {
892	return;
893	}
894	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
895	/* If already on active list, don't do anything */
896	if (op->active_next || op->active_prev || op==active_objects)
897	return;
898		702
899	/* process_events() expects us to insert the object at the beginning	703	this->speed = speed;
900	* of the list. */	704
901	op->active_next = active_objects;	705	if (has_active_speed ())
902	if (op->active_next!=NULL)	706	activate ();
903	op->active_next->active_prev = op;
904	active_objects = op;
905	}
906	else {	707	else
907	/* If not on the active list, nothing needs to be done */	708	deactivate ();
908	if (!op->active_next && !op->active_prev && op!=active_objects)
909	return;
910
911	if (op->active_prev==NULL) {
912	active_objects = op->active_next;
913	if (op->active_next!=NULL)
914	op->active_next->active_prev = NULL;
915	}
916	else {
917	op->active_prev->active_next = op->active_next;
918	if (op->active_next)
919	op->active_next->active_prev = op->active_prev;
920	}
921	op->active_next = NULL;
922	op->active_prev = NULL;
923	}
924	}	709	}
925		710
926	/* This function removes object 'op' from the list of active
927	* objects.
928	* This should only be used for style maps or other such
929	* reference maps where you don't want an object that isn't
930	* in play chewing up cpu time getting processed.
931	* The reverse of this is to call update_ob_speed, which
932	* will do the right thing based on the speed of the object.
933	*/
934	void remove_from_active_list(object *op)
935	{
936	/* If not on the active list, nothing needs to be done */
937	if (!op->active_next && !op->active_prev && op!=active_objects)
938	return;
939
940	if (op->active_prev==NULL) {
941	active_objects = op->active_next;
942	if (op->active_next!=NULL)
943	op->active_next->active_prev = NULL;
944	}
945	else {
946	op->active_prev->active_next = op->active_next;
947	if (op->active_next)
948	op->active_next->active_prev = op->active_prev;
949	}
950	op->active_next = NULL;
951	op->active_prev = NULL;
952	}
953
954	/*	711	/*
955	* update_object() updates the array which represents the map.	712	* update_object() updates the the map.
956	* It takes into account invisible objects (and represent squares covered	713	* It takes into account invisible objects (and represent squares covered
957	* by invisible objects by whatever is below them (unless it's another	714	* by invisible objects by whatever is below them (unless it's another
958	* invisible object, etc...)	715	* invisible object, etc...)
959	* If the object being updated is beneath a player, the look-window	716	* If the object being updated is beneath a player, the look-window
960	* of that player is updated (this might be a suboptimal way of	717	* of that player is updated (this might be a suboptimal way of
961	* updating that window, though, since update_object() is called _often_)	718	* updating that window, though, since update_object() is called _often_)
962	*	719	*
963	* action is a hint of what the caller believes need to be done.	720	* action is a hint of what the caller believes need to be done.
964	* For example, if the only thing that has changed is the face (due to
965	* an animation), we don't need to call update_position until that actually
966	* comes into view of a player. OTOH, many other things, like addition/removal
967	* of walls or living creatures may need us to update the flags now.
968	* current action are:	721	* current action are:
969	* UP_OBJ_INSERT: op was inserted	722	* UP_OBJ_INSERT: op was inserted
970	* UP_OBJ_REMOVE: op was removed	723	* UP_OBJ_REMOVE: op was removed
971	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	724	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
972	* as that is easier than trying to look at what may have changed.	725	* as that is easier than trying to look at what may have changed.
973	* UP_OBJ_FACE: only the objects face has changed.	726	* UP_OBJ_FACE: only the objects face has changed.
974	*/	727	*/
975		728	void
976	void update_object(object *op, int action) {	729	update_object (object *op, int action)
977	int update_now=0, flags;	730	{
978	MoveType move_on, move_off, move_block, move_slow;	731	if (!op)
979		732	{
980	if (op == NULL) {
981	/* this should never happen */	733	/* this should never happen */
982	LOG(llevDebug,"update_object() called for NULL object.\n");	734	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
983	return;	735	return;
984	}
985		736	}
986	if(op->env!=NULL) {	737
		738	if (!op->is_on_map ())
		739	{
987	/* Animation is currently handled by client, so nothing	740	/* Animation is currently handled by client, so nothing
988	* to do in this case.	741	* to do in this case.
989	*/
990	return;
991	}
992
993	/* If the map is saving, don't do anything as everything is
994	* going to get freed anyways.
995	*/	742	*/
996	if (!op->map || op->map->in_memory == MAP_SAVING) return;	743	return;
997		744	}
		745
998	/* make sure the object is within map boundaries */	746	/* make sure the object is within map boundaries */
999	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	747	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
1000	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	748	{
1001	LOG(llevError,"update_object() called for object out of map!\n");	749	LOG (llevError, "update_object() called for object out of map!\n");
1002	#ifdef MANY_CORES	750	#ifdef MANY_CORES
1003	abort();	751	abort ();
1004	#endif	752	#endif
1005	return;	753	return;
1006	}
1007		754	}
1008	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
1009	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
1010	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
1011	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
1012	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
1013	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
1014		755
		756	mapspace &m = op->ms ();
		757
		758	if (!(m.flags_ & P_UPTODATE))
		759	/* nop */;
1015	if (action == UP_OBJ_INSERT) {	760	else if (action == UP_OBJ_INSERT)
		761	{
		762	// this is likely overkill, TODO: revisit (schmorp)
1016	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	763	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
1017	update_now=1;
1018
1019	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	764	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
1020	update_now=1;	765	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
1021		766	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		767	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
1022	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	768	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
1023	update_now=1;	769	|| (m.move_on | op->move_on ) != m.move_on
1024		770	|| (m.move_off | op->move_off ) != m.move_off
1025	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))	771	|| (m.move_slow | op->move_slow) != m.move_slow
1026	update_now=1;
1027
1028	if ((move_on | op->move_on) != move_on) update_now=1;
1029	if ((move_off | op->move_off) != move_off) update_now=1;
1030	/* This isn't perfect, but I don't expect a lot of objects to	772	/* This isn't perfect, but I don't expect a lot of objects to
1031	* to have move_allow right now.	773	* to have move_allow right now.
1032	*/	774	*/
1033	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	775	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
1034	update_now=1;	776	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
1035	if ((move_slow | op->move_slow) != move_slow) update_now=1;	777	m.flags_ = 0;
1036	}	778	}
1037	/* if the object is being removed, we can't make intelligent	779	/* if the object is being removed, we can't make intelligent
1038	* decisions, because remove_ob can't really pass the object	780	* decisions, because remove_ob can't really pass the object
1039	* that is being removed.	781	* that is being removed.
1040	*/	782	*/
1041	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	783	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
1042	update_now=1;	784	m.flags_ = 0;
1043	} else if (action == UP_OBJ_FACE) {	785	else if (action == UP_OBJ_FACE)
1044	/* Nothing to do for that case */	786	/* Nothing to do for that case */ ;
1045	}
1046	else {	787	else
1047	LOG(llevError,"update_object called with invalid action: %d\n", action);	788	LOG (llevError, "update_object called with invalid action: %d\n", action);
1048	}
1049		789
1050	if (update_now) {
1051	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
1052	update_position(op->map, op->x, op->y);
1053	}
1054
1055	if(op->more!=NULL)	790	if (op->more)
1056	update_object(op->more, action);	791	update_object (op->more, action);
1057	}	792	}
1058		793
		794	object::object ()
		795	{
		796	SET_FLAG (this, FLAG_REMOVED);
1059		797
1060	/*	798	expmul = 1.0;
1061	* free_object() frees everything allocated by an object, removes	799	face = blank_face;
1062	* it from the list of used objects, and puts it on the list of	800	}
1063	* free objects. The IS_FREED() flag is set in the object.	801
1064	* The object must have been removed by remove_ob() first for	802	object::~object ()
1065	* this function to succeed.	803	{
		804	unlink ();
		805
		806	free_key_values (this);
		807	}
		808
		809	static int object_count;
		810
		811	void object::link ()
		812	{
		813	assert (!index);//D
		814	uuid = UUID::gen ();
		815	count = ++object_count;
		816
		817	refcnt_inc ();
		818	objects.insert (this);
		819	}
		820
		821	void object::unlink ()
		822	{
		823	if (!index)
		824	return;
		825
		826	objects.erase (this);
		827	refcnt_dec ();
		828	}
		829
		830	void
		831	object::activate ()
		832	{
		833	/* If already on active list, don't do anything */
		834	if (active)
		835	return;
		836
		837	if (has_active_speed ())
		838	actives.insert (this);
		839	}
		840
		841	void
		842	object::activate_recursive ()
		843	{
		844	activate ();
		845
		846	for (object *op = inv; op; op = op->below)
		847	op->activate_recursive ();
		848	}
		849
		850	/* This function removes object 'op' from the list of active
		851	* objects.
		852	* This should only be used for style maps or other such
		853	* reference maps where you don't want an object that isn't
		854	* in play chewing up cpu time getting processed.
		855	* The reverse of this is to call update_ob_speed, which
		856	* will do the right thing based on the speed of the object.
1066	*	857	*/
1067	* If free_inventory is set, free inventory as well. Else drop items in	858	void
1068	* inventory to the ground.	859	object::deactivate ()
1069	*/	860	{
		861	/* If not on the active list, nothing needs to be done */
		862	if (!active)
		863	return;
1070		864
1071	void free_object(object *ob) {	865	actives.erase (this);
1072	free_object2(ob, 0);
1073	}	866	}
1074	void free_object2(object *ob, int free_inventory) {
1075	object *tmp,*op;
1076		867
1077	if (object_free_callback)	868	void
1078	object_free_callback (ob);	869	object::deactivate_recursive ()
		870	{
		871	for (object *op = inv; op; op = op->below)
		872	op->deactivate_recursive ();
1079		873
1080	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	874	deactivate ();
1081	LOG(llevDebug,"Free object called with non removed object\n");	875	}
1082	dump_object(ob);	876
1083	#ifdef MANY_CORES	877	void
1084	abort();	878	object::set_flag_inv (int flag, int value)
1085	#endif	879	{
		880	for (object *op = inv; op; op = op->below)
1086	}	881	{
1087	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	882	op->flag [flag] = value;
1088	LOG(llevMonster,"Warning: tried to free friendly object.\n");	883	op->set_flag_inv (flag, value);
1089	remove_friendly_object(ob);
1090	}	884	}
1091	if(QUERY_FLAG(ob,FLAG_FREED)) {	885	}
1092	dump_object(ob);	886
1093	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	887	/*
1094	return;	888	* Remove and free all objects in the inventory of the given object.
1095	}	889	* object.c ?
1096	if(ob->more!=NULL) {	890	*/
1097	free_object2(ob->more, free_inventory);	891	void
1098	ob->more=NULL;	892	object::destroy_inv (bool drop_to_ground)
1099	}	893	{
1100	if (ob->inv) {	894	// need to check first, because the checks below might segfault
		895	// as we might be on an invalid mapspace and crossfire code
		896	// is too buggy to ensure that the inventory is empty.
		897	// corollary: if you create arrows etc. with stuff in its inventory,
		898	// cf will crash below with off-map x and y
		899	if (!inv)
		900	return;
		901
1101	/* Only if the space blocks everything do we not process -	902	/* Only if the space blocks everything do we not process -
1102	* if some form of movemnt is allowed, let objects	903	* if some form of movement is allowed, let objects
1103	* drop on that space.	904	* drop on that space.
1104	*/	905	*/
1105	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	906	if (!drop_to_ground
1106	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	907	|| !map
1107	{	908	|| map->in_memory != MAP_ACTIVE
1108	op=ob->inv;	909	|| map->no_drop
1109	while(op!=NULL) {	910	|| ms ().move_block == MOVE_ALL)
1110	tmp=op->below;	911	{
1111	remove_ob(op);	912	while (inv)
1112	free_object2(op, free_inventory);	913	{
1113	op=tmp;	914	inv->destroy_inv (false);
		915	inv->destroy ();
		916	}
1114	}	917	}
1115	}	918	else
1116	else { /* Put objects in inventory onto this space */	919	{ /* Put objects in inventory onto this space */
1117	op=ob->inv;	920	while (inv)
1118	while(op!=NULL) {	921	{
1119	tmp=op->below;	922	object *op = inv;
1120	remove_ob(op);	923
1121	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||	924	if (op->flag [FLAG_STARTEQUIP]
1122	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))	925	|| op->flag [FLAG_NO_DROP]
1123	free_object(op);	926	|| op->type == RUNE
1124	else {	927	|| op->type == TRAP
1125	op->x=ob->x;	928	|| op->flag [FLAG_IS_A_TEMPLATE]
1126	op->y=ob->y;	929	|| op->flag [FLAG_DESTROY_ON_DEATH])
1127	insert_ob_in_map(op,ob->map,NULL,0); /* Insert in same map as the envir */	930	op->destroy (true);
1128	}	931	else
1129	op=tmp;	932	map->insert (op, x, y);
		933	}
1130	}	934	}
1131	}
1132	}
1133	/* Remove object from the active list */
1134	ob->speed = 0;
1135	update_ob_speed(ob);
1136
1137	SET_FLAG(ob, FLAG_FREED);
1138	ob->count = 0;
1139
1140	/* Remove this object from the list of used objects */
1141	if(ob->prev==NULL) {
1142	objects=ob->next;
1143	if(objects!=NULL)
1144	objects->prev=NULL;
1145	}
1146	else {
1147	ob->prev->next=ob->next;
1148	if(ob->next!=NULL)
1149	ob->next->prev=ob->prev;
1150	}
1151
1152	if(ob->name!=NULL) FREE_AND_CLEAR_STR(ob->name);
1153	if(ob->name_pl!=NULL) FREE_AND_CLEAR_STR(ob->name_pl);
1154	if(ob->title!=NULL) FREE_AND_CLEAR_STR(ob->title);
1155	if(ob->race!=NULL) FREE_AND_CLEAR_STR(ob->race);
1156	if(ob->slaying!=NULL) FREE_AND_CLEAR_STR(ob->slaying);
1157	if(ob->skill!=NULL) FREE_AND_CLEAR_STR(ob->skill);
1158	if(ob->lore!=NULL) FREE_AND_CLEAR_STR(ob->lore);
1159	if(ob->msg!=NULL) FREE_AND_CLEAR_STR(ob->msg);
1160	if(ob->materialname!=NULL) FREE_AND_CLEAR_STR(ob->materialname);
1161
1162
1163	/* Why aren't events freed? */
1164	free_key_values(ob);
1165
1166	#if 0 /* MEMORY_DEBUG*/
1167	/* This is a nice idea. Unfortunately, a lot of the code in crossfire
1168	* presumes the freed_object will stick around for at least a little
1169	* bit
1170	*/
1171	/* this is necessary so that memory debugging programs will
1172	* be able to accurately report source of malloc. If we recycle
1173	* objects, then some other area may be doing the get_object
1174	* and not freeing it, but the original one that malloc'd the
1175	* object will get the blame.
1176	*/
1177	free(ob);
1178	#else
1179
1180	/* Now link it with the free_objects list: */
1181	ob->prev=NULL;
1182	ob->next=free_objects;
1183	if(free_objects!=NULL)
1184	free_objects->prev=ob;
1185	free_objects=ob;
1186	nroffreeobjects++;
1187	#endif
1188	}	935	}
1189		936
1190	/*	937	object *object::create ()
1191	* count_free() returns the number of objects on the list of free objects.	938	{
1192	*/
1193
1194	int count_free(void) {
1195	int i=0;
1196	object *tmp=free_objects;	939	object *op = new object;
1197	while(tmp!=NULL)	940	op->link ();
1198	tmp=tmp->next, i++;
1199	return i;	941	return op;
1200	}	942	}
1201		943
1202	/*	944	static struct freed_map : maptile
1203	* count_used() returns the number of objects on the list of used objects.	945	{
1204	*/	946	freed_map ()
		947	{
		948	path = "<freed objects map>";
		949	name = "/internal/freed_objects_map";
		950	width = 3;
		951	height = 3;
		952	no_drop = 1;
		953	no_reset = 1;
1205		954
1206	int count_used(void) {	955	alloc ();
1207	int i=0;	956	in_memory = MAP_ACTIVE;
1208	object *tmp=objects;
1209	while(tmp!=NULL)
1210	tmp=tmp->next, i++;
1211	return i;
1212	}
1213
1214	/*
1215	* count_active() returns the number of objects on the list of active objects.
1216	*/
1217
1218	int count_active(void) {
1219	int i=0;
1220	object *tmp=active_objects;
1221	while(tmp!=NULL)
1222	tmp=tmp->active_next, i++;
1223	return i;
1224	}
1225
1226	/*
1227	* sub_weight() recursively (outwards) subtracts a number from the
1228	* weight of an object (and what is carried by it's environment(s)).
1229	*/
1230
1231	void sub_weight (object *op, signed long weight) {
1232	while (op != NULL) {
1233	if (op->type == CONTAINER) {
1234	weight=(signed long)(weight*(100-op->stats.Str)/100);
1235	}
1236	op->carrying-=weight;
1237	op = op->env;
1238	}	957	}
1239	}
1240		958
1241	/* remove_ob(op):	959	~freed_map ()
		960	{
		961	destroy ();
		962	}
		963	} freed_map; // freed objects are moved here to avoid crashes
		964
		965	void
		966	object::do_destroy ()
		967	{
		968	if (flag [FLAG_IS_LINKED])
		969	remove_button_link (this);
		970
		971	if (flag [FLAG_FRIENDLY])
		972	remove_friendly_object (this);
		973
		974	remove ();
		975
		976	attachable::do_destroy ();
		977
		978	deactivate ();
		979	unlink ();
		980
		981	flag [FLAG_FREED] = 1;
		982
		983	// hack to ensure that freed objects still have a valid map
		984	map = &freed_map;
		985	x = 1;
		986	y = 1;
		987
		988	if (more)
		989	{
		990	more->destroy ();
		991	more = 0;
		992	}
		993
		994	head = 0;
		995
		996	// clear those pointers that likely might cause circular references
		997	owner = 0;
		998	enemy = 0;
		999	attacked_by = 0;
		1000	current_weapon = 0;
		1001	}
		1002
		1003	void
		1004	object::destroy (bool destroy_inventory)
		1005	{
		1006	if (destroyed ())
		1007	return;
		1008
		1009	if (!is_head () && !head->destroyed ())
		1010	{
		1011	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1012	head->destroy (destroy_inventory);
		1013	return;
		1014	}
		1015
		1016	destroy_inv (!destroy_inventory);
		1017
		1018	if (is_head ())
		1019	if (sound_destroy)
		1020	play_sound (sound_destroy);
		1021	else if (flag [FLAG_MONSTER])
		1022	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1023
		1024	attachable::destroy ();
		1025	}
		1026
		1027	/* op->remove ():
1242	* This function removes the object op from the linked list of objects	1028	* This function removes the object op from the linked list of objects
1243	* which it is currently tied to. When this function is done, the	1029	* which it is currently tied to. When this function is done, the
1244	* object will have no environment. If the object previously had an	1030	* object will have no environment. If the object previously had an
1245	* environment, the x and y coordinates will be updated to	1031	* environment, the x and y coordinates will be updated to
1246	* the previous environment.	1032	* the previous environment.
1247	* Beware: This function is called from the editor as well!
1248	*/	1033	*/
1249		1034	void
1250	void remove_ob(object *op) {	1035	object::do_remove ()
		1036	{
1251	object *tmp,*last=NULL;	1037	object *tmp, *last = 0;
1252	object *otmp;	1038	object *otmp;
1253	tag_t tag;
1254	int check_walk_off;
1255	mapstruct *m;
1256	sint16 x,y;
1257
1258		1039
1259	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1040	if (flag [FLAG_REMOVED])
1260	dump_object(op);	1041	return;
1261	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1262		1042
1263	/* Changed it to always dump core in this case. As has been learned	1043	INVOKE_OBJECT (REMOVE, this);
1264	* in the past, trying to recover from errors almost always
1265	* make things worse, and this is a real error here - something
1266	* that should not happen.
1267	* Yes, if this was a mission critical app, trying to do something
1268	* to recover may make sense, but that is because failure of the app
1269	* may have other disastrous problems. Cf runs out of a script
1270	* so is easily enough restarted without any real problems.
1271	* MSW 2001-07-01
1272	*/
1273	abort();
1274	}
1275	if(op->more!=NULL)
1276	remove_ob(op->more);
1277		1044
1278	SET_FLAG(op, FLAG_REMOVED);	1045	flag [FLAG_REMOVED] = true;
1279		1046
		1047	if (more)
		1048	more->remove ();
		1049
1280	/*	1050	/*
1281	* In this case, the object to be removed is in someones	1051	* In this case, the object to be removed is in someones
1282	* inventory.	1052	* inventory.
		1053	*/
		1054	if (env)
		1055	{
		1056	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
		1057	if (object *pl = visible_to ())
		1058	esrv_del_item (pl->contr, count);
		1059	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
		1060
		1061	adjust_weight (env, -total_weight ());
		1062
		1063	/* we set up values so that it could be inserted into
		1064	* the map, but we don't actually do that - it is up
		1065	* to the caller to decide what we want to do.
1283	*/	1066	*/
1284	if(op->env!=NULL) {	1067	map = env->map;
1285	if(op->nrof)	1068	x = env->x;
1286	sub_weight(op->env, op->weight*op->nrof);	1069	y = env->y;
1287	else
1288	sub_weight(op->env, op->weight+op->carrying);
1289		1070
		1071	// make sure cmov optimisation is applicable
		1072	*(above ? &above->below : &env->inv) = below;
		1073	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1074
		1075	above = 0;
		1076	below = 0;
		1077	env = 0;
		1078
1290	/* NO_FIX_PLAYER is set when a great many changes are being	1079	/* NO_FIX_PLAYER is set when a great many changes are being
1291	* made to players inventory. If set, avoiding the call	1080	* made to players inventory. If set, avoiding the call
1292	* to save cpu time.	1081	* to save cpu time.
1293	*/
1294	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&
1295	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1296	fix_player(otmp);
1297
1298	if(op->above!=NULL)
1299	op->above->below=op->below;
1300	else
1301	op->env->inv=op->below;
1302
1303	if(op->below!=NULL)
1304	op->below->above=op->above;
1305
1306	/* we set up values so that it could be inserted into
1307	* the map, but we don't actually do that - it is up
1308	* to the caller to decide what we want to do.
1309	*/
1310	op->x=op->env->x,op->y=op->env->y;
1311	op->ox=op->x,op->oy=op->y;
1312	op->map=op->env->map;
1313	op->above=NULL,op->below=NULL;
1314	op->env=NULL;
1315	return;
1316	}
1317
1318	/* If we get here, we are removing it from a map */
1319	if (op->map == NULL) return;
1320
1321	x = op->x;
1322	y = op->y;
1323	m = get_map_from_coord(op->map, &x, &y);
1324
1325	if (!m) {
1326	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1327	op->map->path, op->x, op->y);
1328	/* in old days, we used to set x and y to 0 and continue.
1329	* it seems if we get into this case, something is probablye
1330	* screwed up and should be fixed.
1331	*/
1332	abort();
1333	}
1334	if (op->map != m) {
1335	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1336	op->map->path, m->path, op->x, op->y, x, y);
1337	}
1338
1339	/* Re did the following section of code - it looks like it had
1340	* lots of logic for things we no longer care about
1341	*/	1082	*/
		1083	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
		1084	otmp->update_stats ();
		1085	}
		1086	else if (map)
		1087	{
		1088	map->dirty = true;
		1089	mapspace &ms = this->ms ();
1342		1090
		1091	if (object *pl = ms.player ())
		1092	{
		1093	if (type == PLAYER) // this == pl(!)
		1094	{
		1095	// leaving a spot always closes any open container on the ground
		1096	if (container && !container->env)
		1097	// this causes spurious floorbox updates, but it ensures
		1098	// that the CLOSE event is being sent.
		1099	close_container ();
		1100
		1101	--map->players;
		1102	map->touch ();
		1103	}
		1104	else if (pl->container == this)
		1105	{
		1106	// removing a container should close it
		1107	close_container ();
		1108	}
		1109
		1110	esrv_del_item (pl->contr, count);
		1111	}
		1112
1343	/* link the object above us */	1113	/* link the object above us */
1344	if (op->above)	1114	// re-link, make sure compiler can easily use cmove
1345	op->above->below=op->below;	1115	*(above ? &above->below : &ms.top) = below;
1346	else	1116	*(below ? &below->above : &ms.bot) = above;
1347	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1348
1349	/* Relink the object below us, if there is one */
1350	if(op->below) {
1351	op->below->above=op->above;
1352	} else {
1353	/* Nothing below, which means we need to relink map object for this space
1354	* use translated coordinates in case some oddness with map tiling is
1355	* evident
1356	*/
1357	if(GET_MAP_OB(m,x,y)!=op) {
1358	dump_object(op);
1359	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);
1360	dump_object(GET_MAP_OB(m,x,y));
1361	LOG(llevError,"%s\n",errmsg);
1362	}
1363	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1364	}
1365	op->above=NULL;
1366	op->below=NULL;
1367		1117
		1118	above = 0;
		1119	below = 0;
		1120
1368	if (op->map->in_memory == MAP_SAVING)	1121	if (map->in_memory == MAP_SAVING)
1369	return;	1122	return;
1370		1123
1371	tag = op->count;	1124	int check_walk_off = !flag [FLAG_NO_APPLY];
1372	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1373	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1374	/* No point updating the players look faces if he is the object
1375	* being removed.
1376	*/
1377		1125
1378	if(tmp->type==PLAYER && tmp!=op) {	1126	if (object *pl = ms.player ())
		1127	{
		1128	if (pl->container == this)
1379	/* If a container that the player is currently using somehow gets	1129	/* If a container that the player is currently using somehow gets
1380	* removed (most likely destroyed), update the player view	1130	* removed (most likely destroyed), update the player view
1381	* appropriately.	1131	* appropriately.
1382	*/	1132	*/
1383	if (tmp->container==op) {	1133	pl->close_container ();
1384	CLEAR_FLAG(op, FLAG_APPLIED);	1134
1385	tmp->container=NULL;	1135	//TODO: the floorbox prev/next might need updating
1386	}	1136	//esrv_del_item (pl->contr, count);
1387	tmp->contr->socket.update_look=1;	1137	//TODO: update floorbox to preserve ordering
1388	}	1138	if (pl->contr->ns)
		1139	pl->contr->ns->floorbox_update ();
		1140	}
		1141
		1142	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1143	{
		1144	/* No point updating the players look faces if he is the object
		1145	* being removed.
		1146	*/
		1147
1389	/* See if player moving off should effect something */	1148	/* See if object moving off should effect something */
1390	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1149	if (check_walk_off
		1150	&& ((move_type & tmp->move_off)
1391	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1151	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1152	{
		1153	move_apply (tmp, this, 0);
1392		1154
1393	move_apply(tmp, op, NULL);	1155	if (destroyed ())
1394	if (was_destroyed (op, tag)) {	1156	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1395	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "	1157	}
1396	"leaving object\n", tmp->name, tmp->arch->name);
1397	}
1398	}
1399		1158
1400	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1159	last = tmp;
		1160	}
1401		1161
1402	if(tmp->above == tmp)
1403	tmp->above = NULL;
1404	last=tmp;
1405	}
1406	/* last == NULL of there are no objects on this space */	1162	/* last == NULL if there are no objects on this space */
1407	if (last==NULL) {	1163	//TODO: this makes little sense, why only update the topmost object?
1408	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1164	if (!last)
1409	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1165	map->at (x, y).flags_ = 0;
1410	* those out anyways, and if there are any flags set right now, they won't
1411	* be correct anyways.
1412	*/
1413	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1414	update_position(op->map, op->x, op->y);
1415	}
1416	else	1166	else
1417	update_object(last, UP_OBJ_REMOVE);	1167	update_object (last, UP_OBJ_REMOVE);
1418		1168
1419	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1169	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1420	update_all_los(op->map, op->x, op->y);	1170	update_all_los (map, x, y);
1421		1171	}
1422	}	1172	}
1423		1173
1424	/*	1174	/*
1425	* merge_ob(op,top):	1175	* merge_ob(op,top):
1426	*	1176	*
1427	* This function goes through all objects below and including top, and	1177	* This function goes through all objects below and including top, and
1428	* merges op to the first matching object.	1178	* merges op to the first matching object.
1429	* If top is NULL, it is calculated.	1179	* If top is NULL, it is calculated.
1430	* Returns pointer to object if it succeded in the merge, otherwise NULL	1180	* Returns pointer to object if it succeded in the merge, otherwise NULL
1431	*/	1181	*/
1432		1182	object *
1433	object *merge_ob(object *op, object *top) {	1183	merge_ob (object *op, object *top)
		1184	{
1434	if(!op->nrof)	1185	if (!op->nrof)
1435	return 0;	1186	return 0;
1436	if(top==NULL)	1187
		1188	if (!top)
1437	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1189	for (top = op; top && top->above; top = top->above)
		1190	;
		1191
1438	for(;top!=NULL;top=top->below) {	1192	for (; top; top = top->below)
1439	if(top==op)	1193	if (object::can_merge (op, top))
1440	continue;
1441	if (CAN_MERGE(op,top))
1442	{	1194	{
1443	top->nrof+=op->nrof;	1195	top->nrof += op->nrof;
1444	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1196
1445	op->weight = 0; /* Don't want any adjustements now */	1197	if (object *pl = top->visible_to ())
1446	remove_ob(op);	1198	esrv_update_item (UPD_NROF, pl, top);
1447	free_object(op);	1199
		1200	op->weight = 0; // cancel the addition above
		1201	op->carrying = 0; // must be 0 already
		1202
		1203	op->destroy (1);
		1204
1448	return top;	1205	return top;
1449	}	1206	}
1450	}	1207
1451	return NULL;	1208	return 0;
1452	}	1209	}
1453		1210
		1211	void
		1212	object::expand_tail ()
		1213	{
		1214	if (more)
		1215	return;
		1216
		1217	object *prev = this;
		1218
		1219	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1220	{
		1221	object *op = arch_to_object (at);
		1222
		1223	op->name = name;
		1224	op->name_pl = name_pl;
		1225	op->title = title;
		1226
		1227	op->head = this;
		1228	prev->more = op;
		1229
		1230	prev = op;
		1231	}
		1232	}
		1233
1454	/*	1234	/*
1455	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1235	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1456	* job preparing multi-part monsters	1236	* job preparing multi-part monsters.
1457	*/	1237	*/
		1238	object *
1458	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1239	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1459	object* tmp;	1240	{
1460	if (op->head)	1241	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1461	op=op->head;	1242	{
1462	for (tmp=op;tmp;tmp=tmp->more){
1463	tmp->x=x+tmp->arch->clone.x;	1243	tmp->x = x + tmp->arch->x;
1464	tmp->y=y+tmp->arch->clone.y;	1244	tmp->y = y + tmp->arch->y;
1465	}	1245	}
		1246
1466	return insert_ob_in_map (op, m, originator, flag);	1247	return insert_ob_in_map (op, m, originator, flag);
1467	}	1248	}
1468		1249
1469	/*	1250	/*
1470	* insert_ob_in_map (op, map, originator, flag):	1251	* insert_ob_in_map (op, map, originator, flag):
1471	* This function inserts the object in the two-way linked list	1252	* This function inserts the object in the two-way linked list
…		…
1484	* Return value:	1265	* Return value:
1485	* new object if 'op' was merged with other object	1266	* new object if 'op' was merged with other object
1486	* NULL if 'op' was destroyed	1267	* NULL if 'op' was destroyed
1487	* just 'op' otherwise	1268	* just 'op' otherwise
1488	*/	1269	*/
1489		1270	object *
1490	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1271	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1491	{	1272	{
1492	object *tmp, *top, *floor=NULL;	1273	op->remove ();
1493	sint16 x,y;
1494		1274
1495	if (QUERY_FLAG (op, FLAG_FREED)) {
1496	LOG (llevError, "Trying to insert freed object!\n");
1497	return NULL;
1498	}
1499	if(m==NULL) {
1500	dump_object(op);
1501	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1502	return op;
1503	}
1504	if(out_of_map(m,op->x,op->y)) {
1505	dump_object(op);
1506	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);
1507	#ifdef MANY_CORES
1508	/* Better to catch this here, as otherwise the next use of this object
1509	* is likely to cause a crash. Better to find out where it is getting
1510	* improperly inserted.
1511	*/
1512	abort();
1513	#endif
1514	return op;
1515	}
1516	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1517	dump_object(op);
1518	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1519	return op;
1520	}
1521	if(op->more!=NULL) {
1522	/* The part may be on a different map. */
1523
1524	object *more = op->more;
1525
1526	/* We really need the caller to normalize coordinates - if
1527	* we set the map, that doesn't work if the location is within
1528	* a map and this is straddling an edge. So only if coordinate
1529	* is clear wrong do we normalize it.
1530	*/
1531	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {
1532	/* Debugging information so you can see the last coordinates this object had */
1533	more->ox = more->x;
1534	more->oy = more->y;
1535	more->map = get_map_from_coord(m, &more->x, &more->y);
1536	} else if (!more->map) {
1537	/* For backwards compatibility - when not dealing with tiled maps,
1538	* more->map should always point to the parent.
1539	*/
1540	more->map = m;
1541	}
1542
1543	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {
1544	if ( ! op->head)
1545	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
1546	return NULL;
1547	}
1548	}
1549	CLEAR_FLAG(op,FLAG_REMOVED);
1550
1551	/* Debugging information so you can see the last coordinates this object had */
1552	op->ox=op->x;
1553	op->oy=op->y;
1554
1555	/* Ideally, the caller figures this out. However, it complicates a lot	1275	/* Ideally, the caller figures this out. However, it complicates a lot
1556	* of areas of callers (eg, anything that uses find_free_spot would now	1276	* of areas of callers (eg, anything that uses find_free_spot would now
1557	* need extra work	1277	* need extra work
1558	*/	1278	*/
1559	op->map=get_map_from_coord(m, &op->x, &op->y);	1279	if (!xy_normalise (m, op->x, op->y))
1560	x = op->x;	1280	{
1561	y = op->y;	1281	op->head_ ()->destroy (1);// remove head_ once all tail object destroyers found
		1282	return 0;
		1283	}
1562		1284
		1285	if (object *more = op->more)
		1286	if (!insert_ob_in_map (more, m, originator, flag))
		1287	return 0;
		1288
		1289	CLEAR_FLAG (op, FLAG_REMOVED);
		1290
		1291	op->map = m;
		1292	mapspace &ms = op->ms ();
		1293
1563	/* this has to be done after we translate the coordinates.	1294	/* this has to be done after we translate the coordinates.
1564	*/	1295	*/
1565	if(op->nrof && !(flag & INS_NO_MERGE)) {	1296	if (op->nrof && !(flag & INS_NO_MERGE))
1566	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1297	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1567	if (CAN_MERGE(op,tmp)) {	1298	if (object::can_merge (op, tmp))
1568	op->nrof+=tmp->nrof;	1299	{
1569	remove_ob(tmp);	1300	// TODO: we actually want to update tmp, not op,
1570	free_object(tmp);	1301	// but some caller surely breaks when we return tmp
1571	}	1302	// from here :/
1572	}	1303	op->nrof += tmp->nrof;
		1304	tmp->destroy (1);
		1305	}
1573		1306
1574	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1307	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1575	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1308	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1309
1576	if (!QUERY_FLAG(op, FLAG_ALIVE))	1310	if (!QUERY_FLAG (op, FLAG_ALIVE))
1577	CLEAR_FLAG(op, FLAG_NO_STEAL);	1311	CLEAR_FLAG (op, FLAG_NO_STEAL);
1578		1312
1579	if (flag & INS_BELOW_ORIGINATOR) {	1313	if (flag & INS_BELOW_ORIGINATOR)
1580	if (originator->map != op->map || originator->x != op->x ||	1314	{
1581	originator->y != op->y) {	1315	if (originator->map != op->map || originator->x != op->x || originator->y != op->y || !originator->is_on_map ())
		1316	{
1582	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1317	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1583	abort();	1318	abort ();
1584	}	1319	}
		1320
1585	op->above = originator;	1321	op->above = originator;
1586	op->below = originator->below;	1322	op->below = originator->below;
1587	if (op->below) op->below->above = op;
1588	else SET_MAP_OB(op->map, op->x, op->y, op);
1589	/* since *below* originator, no need to update top */
1590	originator->below = op;	1323	originator->below = op;
1591	} else {	1324
		1325	*(op->below ? &op->below->above : &ms.bot) = op;
		1326	}
		1327	else
		1328	{
		1329	object *floor = 0;
		1330	object *top = ms.top;
		1331
1592	/* If there are other objects, then */	1332	/* If there are other objects, then */
1593	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {	1333	if (top)
1594	object *last=NULL;	1334	{
1595	/*	1335	/*
1596	* If there are multiple objects on this space, we do some trickier handling.	1336	* If there are multiple objects on this space, we do some trickier handling.
1597	* We've already dealt with merging if appropriate.	1337	* We've already dealt with merging if appropriate.
1598	* Generally, we want to put the new object on top. But if	1338	* Generally, we want to put the new object on top. But if
1599	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1339	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1600	* floor, we want to insert above that and no further.	1340	* floor, we want to insert above that and no further.
1601	* Also, if there are spell objects on this space, we stop processing	1341	* Also, if there are spell objects on this space, we stop processing
1602	* once we get to them. This reduces the need to traverse over all of	1342	* once we get to them. This reduces the need to traverse over all of
1603	* them when adding another one - this saves quite a bit of cpu time	1343	* them when adding another one - this saves quite a bit of cpu time
1604	* when lots of spells are cast in one area. Currently, it is presumed	1344	* when lots of spells are cast in one area. Currently, it is presumed
1605	* that flying non pickable objects are spell objects.	1345	* that flying non pickable objects are spell objects.
1606	*/	1346	*/
		1347	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1348	{
		1349	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) || QUERY_FLAG (tmp, FLAG_OVERLAY_FLOOR))
		1350	floor = tmp;
1607		1351
1608	while (top != NULL) {	1352	if (QUERY_FLAG (tmp, FLAG_NO_PICK) && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1609	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1610	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1611	if (QUERY_FLAG(top, FLAG_NO_PICK)
1612	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1613	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1614	{	1353	{
1615	/* We insert above top, so we want this object below this */	1354	/* We insert above top, so we want this object below this */
1616	top=top->below;	1355	top = tmp->below;
1617	break;	1356	break;
1618	}	1357	}
1619	last = top;
1620	top = top->above;
1621	}
1622	/* Don't want top to be NULL, so set it to the last valid object */
1623	top = last;
1624		1358
		1359	top = tmp;
		1360	}
		1361
1625	/* We let update_position deal with figuring out what the space	1362	/* We let update_position deal with figuring out what the space
1626	* looks like instead of lots of conditions here.	1363	* looks like instead of lots of conditions here.
1627	* makes things faster, and effectively the same result.	1364	* makes things faster, and effectively the same result.
1628	*/	1365	*/
1629		1366
1630	/* Have object 'fall below' other objects that block view.	1367	/* Have object 'fall below' other objects that block view.
1631	* Unless those objects are exits, type 66	1368	* Unless those objects are exits.
1632	* If INS_ON_TOP is used, don't do this processing	1369	* If INS_ON_TOP is used, don't do this processing
1633	* Need to find the object that in fact blocks view, otherwise	1370	* Need to find the object that in fact blocks view, otherwise
1634	* stacking is a bit odd.	1371	* stacking is a bit odd.
1635	*/	1372	*/
1636	if (!(flag & INS_ON_TOP) &&	1373	if (!(flag & INS_ON_TOP)
1637	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&	1374	&& ms.flags () & P_BLOCKSVIEW
1638	(op->face && !op->face->visibility)) {	1375	&& (op->face && !faces [op->face].visibility))
		1376	{
		1377	object *last;
		1378
1639	for (last=top; last != floor; last=last->below)	1379	for (last = top; last != floor; last = last->below)
1640	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;	1380	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1381	break;
		1382
1641	/* Check to see if we found the object that blocks view,	1383	/* Check to see if we found the object that blocks view,
1642	* and make sure we have a below pointer for it so that	1384	* and make sure we have a below pointer for it so that
1643	* we can get inserted below this one, which requires we	1385	* we can get inserted below this one, which requires we
1644	* set top to the object below us.	1386	* set top to the object below us.
1645	*/	1387	*/
1646	if (last && last->below && last != floor) top=last->below;	1388	if (last && last->below && last != floor)
1647	}	1389	top = last->below;
1648	} /* If objects on this space */	1390	}
1649	if (flag & INS_MAP_LOAD)	1391	} /* If objects on this space */
1650	top = GET_MAP_TOP(op->map,op->x,op->y);	1392
1651	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1393	if (flag & INS_ABOVE_FLOOR_ONLY)
		1394	top = floor;
1652		1395
1653	/* Top is the object that our object (op) is going to get inserted above.	1396	/* Top is the object that our object (op) is going to get inserted above.
1654	*/	1397	*/
1655		1398
1656	/* First object on this space */	1399	/* no top found, insert at bottom */
1657	if (!top) {	1400	if (!top)
1658	op->above = GET_MAP_OB(op->map, op->x, op->y);	1401	{
1659	if (op->above) op->above->below = op;	1402	op->below = 0;
1660	op->below = NULL;	1403	op->above = ms.bot;
1661	SET_MAP_OB(op->map, op->x, op->y, op);	1404	ms.bot = op;
1662	} else { /* get inserted into the stack above top */	1405
		1406	*(op->above ? &op->above->below : &ms.top) = op;
		1407	}
		1408	else
		1409	{ /* get inserted into the stack above top */
1663	op->above = top->above;	1410	op->above = top->above;
1664	if (op->above) op->above->below = op;
1665	op->below = top;
1666	top->above = op;	1411	top->above = op;
1667	}	1412
1668	if (op->above==NULL)	1413	op->below = top;
1669	SET_MAP_TOP(op->map,op->x, op->y, op);	1414	*(op->above ? &op->above->below : &ms.top) = op;
		1415	}
1670	} /* else not INS_BELOW_ORIGINATOR */	1416	} /* else not INS_BELOW_ORIGINATOR */
1671		1417
1672	if(op->type==PLAYER)	1418	if (op->type == PLAYER)
		1419	{
1673	op->contr->do_los=1;	1420	op->contr->do_los = 1;
1674		1421	++op->map->players;
1675	/* If we have a floor, we know the player, if any, will be above	1422	op->map->touch ();
1676	* it, so save a few ticks and start from there.
1677	*/
1678	if (!(flag & INS_MAP_LOAD))
1679	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1680	if (tmp->type == PLAYER)
1681	tmp->contr->socket.update_look=1;
1682	}	1423	}
1683		1424
		1425	op->map->dirty = true;
		1426
		1427	if (object *pl = ms.player ())
		1428	//TODO: the floorbox prev/next might need updating
		1429	//esrv_send_item (pl, op);
		1430	//TODO: update floorbox to preserve ordering
		1431	if (pl->contr->ns)
		1432	pl->contr->ns->floorbox_update ();
		1433
1684	/* If this object glows, it may affect lighting conditions that are	1434	/* If this object glows, it may affect lighting conditions that are
1685	* visible to others on this map. But update_all_los is really	1435	* visible to others on this map. But update_all_los is really
1686	* an inefficient way to do this, as it means los for all players	1436	* an inefficient way to do this, as it means los for all players
1687	* on the map will get recalculated. The players could very well	1437	* on the map will get recalculated. The players could very well
1688	* be far away from this change and not affected in any way -	1438	* be far away from this change and not affected in any way -
1689	* this should get redone to only look for players within range,	1439	* this should get redone to only look for players within range,
1690	* or just updating the P_NEED_UPDATE for spaces within this area	1440	* or just updating the P_UPTODATE for spaces within this area
1691	* of effect may be sufficient.	1441	* of effect may be sufficient.
1692	*/	1442	*/
1693	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1443	if (op->map->darkness && (op->glow_radius != 0))
1694	update_all_los(op->map, op->x, op->y);	1444	update_all_los (op->map, op->x, op->y);
1695		1445
1696
1697	/* updates flags (blocked, alive, no magic, etc) for this map space */	1446	/* updates flags (blocked, alive, no magic, etc) for this map space */
1698	update_object(op,UP_OBJ_INSERT);	1447	update_object (op, UP_OBJ_INSERT);
1699		1448
		1449	INVOKE_OBJECT (INSERT, op);
1700		1450
1701	/* Don't know if moving this to the end will break anything. However,	1451	/* Don't know if moving this to the end will break anything. However,
1702	* we want to have update_look set above before calling this.	1452	* we want to have floorbox_update called before calling this.
1703	*	1453	*
1704	* check_move_on() must be after this because code called from	1454	* check_move_on() must be after this because code called from
1705	* check_move_on() depends on correct map flags (so functions like	1455	* check_move_on() depends on correct map flags (so functions like
1706	* blocked() and wall() work properly), and these flags are updated by	1456	* blocked() and wall() work properly), and these flags are updated by
1707	* update_object().	1457	* update_object().
1708	*/	1458	*/
1709		1459
1710	/* if this is not the head or flag has been passed, don't check walk on status */	1460	/* if this is not the head or flag has been passed, don't check walk on status */
1711
1712	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1461	if (!(flag & INS_NO_WALK_ON) && op->head_ () == op)
		1462	{
1713	if (check_move_on(op, originator))	1463	if (check_move_on (op, originator))
1714	return NULL;	1464	return 0;
1715		1465
1716	/* If we are a multi part object, lets work our way through the check	1466	/* If we are a multi part object, lets work our way through the check
1717	* walk on's.	1467	* walk on's.
1718	*/	1468	*/
1719	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1469	for (object *tmp = op->more; tmp; tmp = tmp->more)
1720	if (check_move_on (tmp, originator))	1470	if (check_move_on (tmp, originator))
1721	return NULL;	1471	return 0;
1722	}	1472	}
		1473
1723	return op;	1474	return op;
1724	}	1475	}
1725		1476
1726	/* this function inserts an object in the map, but if it	1477	/* this function inserts an object in the map, but if it
1727	* finds an object of its own type, it'll remove that one first.	1478	* finds an object of its own type, it'll remove that one first.
1728	* op is the object to insert it under: supplies x and the map.	1479	* op is the object to insert it under: supplies x and the map.
1729	*/	1480	*/
		1481	void
1730	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1482	replace_insert_ob_in_map (const char *arch_string, object *op)
1731	object *tmp;	1483	{
1732	object *tmp1;
1733
1734	/* first search for itself and remove any old instances */	1484	/* first search for itself and remove any old instances */
1735		1485
1736	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1486	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1737	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1487	if (!strcmp (tmp->arch->archname, arch_string)) /* same archetype */
1738	remove_ob(tmp);	1488	tmp->destroy (1);
1739	free_object(tmp);
1740	}
1741	}
1742		1489
1743	tmp1=arch_to_object(find_archetype(arch_string));	1490	object *tmp = arch_to_object (archetype::find (arch_string));
1744		1491
1745		1492	tmp->x = op->x;
1746	tmp1->x = op->x; tmp1->y = op->y;	1493	tmp->y = op->y;
		1494
1747	insert_ob_in_map(tmp1,op->map,op,0);	1495	insert_ob_in_map (tmp, op->map, op, 0);
1748	}
1749
1750	/*
1751	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1752	* is returned contains nr objects, and the remaining parts contains
1753	* the rest (or is removed and freed if that number is 0).
1754	* On failure, NULL is returned, and the reason put into the
1755	* global static errmsg array.
1756	*/
1757
1758	object *get_split_ob(object *orig_ob, uint32 nr) {
1759	object *newob;
1760	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1761
1762	if(orig_ob->nrof<nr) {
1763	sprintf(errmsg,"There are only %d %ss.",
1764	orig_ob->nrof?orig_ob->nrof:1, orig_ob->name);
1765	return NULL;
1766	}
1767	newob = object_create_clone(orig_ob);
1768	if((orig_ob->nrof-=nr)<1) {
1769	if ( ! is_removed)
1770	remove_ob(orig_ob);
1771	free_object2(orig_ob, 1);
1772	}
1773	else if ( ! is_removed) {
1774	if(orig_ob->env!=NULL)
1775	sub_weight (orig_ob->env,orig_ob->weight*nr);
1776	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1777	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1778	LOG(llevDebug,
1779	"Error, Tried to split object whose map is not in memory.\n");
1780	return NULL;
1781	}
1782	}
1783	newob->nrof=nr;
1784
1785	return newob;
1786	}	1496	}
1787		1497
		1498	object *
		1499	object::insert_at (object *where, object *originator, int flags)
		1500	{
		1501	if (where->env)
		1502	return where->env->insert (this);
		1503	else
		1504	return where->map->insert (this, where->x, where->y, originator, flags);
		1505	}
		1506
1788	/*	1507	/*
1789	* decrease_ob_nr(object, number) decreases a specified number from	1508	* decrease(object, number) decreases a specified number from
1790	* the amount of an object. If the amount reaches 0, the object	1509	* the amount of an object. If the amount reaches 0, the object
1791	* is subsequently removed and freed.	1510	* is subsequently removed and freed.
1792	*	1511	*
1793	* Return value: 'op' if something is left, NULL if the amount reached 0	1512	* Return value: 'op' if something is left, NULL if the amount reached 0
1794	*/	1513	*/
1795		1514	bool
1796	object *decrease_ob_nr (object *op, uint32 i)	1515	object::decrease (sint32 nr)
1797	{	1516	{
1798	object *tmp;	1517	if (!nr)
1799	player *pl;	1518	return true;
1800		1519
1801	if (i == 0) /* objects with op->nrof require this check */	1520	nr = min (nr, nrof);
		1521
		1522	nrof -= nr;
		1523
		1524	if (nrof)
		1525	{
		1526	adjust_weight (env, -weight * nr); // carrying == 0
		1527
		1528	if (object *pl = visible_to ())
		1529	esrv_update_item (UPD_NROF, pl, this);
		1530
		1531	return true;
		1532	}
		1533	else
		1534	{
		1535	destroy (1);
		1536	return false;
		1537	}
		1538	}
		1539
		1540	/*
		1541	* split(ob,nr) splits up ob into two parts. The part which
		1542	* is returned contains nr objects, and the remaining parts contains
		1543	* the rest (or is removed and returned if that number is 0).
		1544	* On failure, NULL is returned.
		1545	*/
		1546	object *
		1547	object::split (sint32 nr)
		1548	{
		1549	int have = number_of ();
		1550
		1551	if (have < nr)
		1552	return 0;
		1553	else if (have == nr)
		1554	{
		1555	remove ();
		1556	return this;
		1557	}
		1558	else
		1559	{
		1560	decrease (nr);
		1561
		1562	object *op = deep_clone ();
		1563	op->nrof = nr;
1802	return op;	1564	return op;
1803
1804	if (i > op->nrof)
1805	i = op->nrof;
1806
1807	if (QUERY_FLAG (op, FLAG_REMOVED))
1808	{	1565	}
1809	op->nrof -= i;	1566	}
		1567
		1568	object *
		1569	insert_ob_in_ob (object *op, object *where)
		1570	{
		1571	if (!where)
1810	}	1572	{
1811	else if (op->env != NULL)	1573	char *dump = dump_object (op);
1812	{	1574	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1813	/* is this object in the players inventory, or sub container	1575	free (dump);
1814	* therein?
1815	*/
1816	tmp = is_player_inv (op->env);
1817	/* nope. Is this a container the player has opened?
1818	* If so, set tmp to that player.
1819	* IMO, searching through all the players will mostly
1820	* likely be quicker than following op->env to the map,
1821	* and then searching the map for a player.
1822	*/
1823	if (!tmp) {
1824	for (pl=first_player; pl; pl=pl->next)
1825	if (pl->ob->container == op->env) break;
1826	if (pl) tmp=pl->ob;
1827	else tmp=NULL;
1828	}
1829
1830	if (i < op->nrof) {
1831	sub_weight (op->env, op->weight * i);
1832	op->nrof -= i;
1833	if (tmp) {
1834	esrv_send_item(tmp, op);
1835	}
1836	} else {
1837	remove_ob (op);
1838	op->nrof = 0;
1839	if (tmp) {
1840	esrv_del_item(tmp->contr, op->count);
1841	}
1842	}
1843	}
1844	else
1845	{
1846	object *above = op->above;
1847
1848	if (i < op->nrof) {
1849	op->nrof -= i;
1850	} else {
1851	remove_ob (op);
1852	op->nrof = 0;
1853	}
1854	/* Since we just removed op, op->above is null */
1855	for (tmp = above; tmp != NULL; tmp = tmp->above)
1856	if (tmp->type == PLAYER) {
1857	if (op->nrof)
1858	esrv_send_item(tmp, op);
1859	else
1860	esrv_del_item(tmp->contr, op->count);
1861	}
1862	}
1863
1864	if (op->nrof) {
1865	return op;	1576	return op;
1866	} else {	1577	}
1867	free_object (op);	1578
1868	return NULL;	1579	if (where->head_ () != where)
1869	}	1580	{
1870	}	1581	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1871		1582	where = where->head;
1872	/*
1873	* add_weight(object, weight) adds the specified weight to an object,
1874	* and also updates how much the environment(s) is/are carrying.
1875	*/
1876
1877	void add_weight (object *op, signed long weight) {
1878	while (op!=NULL) {
1879	if (op->type == CONTAINER) {
1880	weight=(signed long)(weight*(100-op->stats.Str)/100);
1881	}
1882	op->carrying+=weight;
1883	op=op->env;
1884	}	1583	}
1885	}
1886		1584
		1585	return where->insert (op);
		1586	}
		1587
1887	/*	1588	/*
1888	* insert_ob_in_ob(op,environment):	1589	* env->insert (op)
1889	* This function inserts the object op in the linked list	1590	* This function inserts the object op in the linked list
1890	* inside the object environment.	1591	* inside the object environment.
1891	*	1592	*
1892	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1893	* the inventory at the last position or next to other objects of the same
1894	* type.
1895	* Frank: Now sorted by type, archetype and magic!
1896	*
1897	* The function returns now pointer to inserted item, and return value can	1593	* The function returns now pointer to inserted item, and return value can
1898	* be != op, if items are merged. -Tero	1594	* be != op, if items are merged. -Tero
1899	*/	1595	*/
1900		1596	object *
1901	object *insert_ob_in_ob(object *op,object *where) {	1597	object::insert (object *op)
1902	object *tmp, *otmp;	1598	{
1903
1904	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1905	dump_object(op);
1906	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1907	return op;
1908	}
1909	if(where==NULL) {
1910	dump_object(op);
1911	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1912	return op;
1913	}
1914	if (where->head) {
1915	LOG(llevDebug,
1916	"Warning: Tried to insert object wrong part of multipart object.\n");
1917	where = where->head;
1918	}
1919	if (op->more) {	1599	if (op->more)
		1600	{
1920	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1601	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1921	op->name, op->count);
1922	return op;	1602	return op;
1923	}	1603	}
1924	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1604
1925	CLEAR_FLAG(op, FLAG_REMOVED);	1605	op->remove ();
		1606
		1607	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1608
1926	if(op->nrof) {	1609	if (op->nrof)
1927	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1610	for (object *tmp = inv; tmp; tmp = tmp->below)
1928	if ( CAN_MERGE(tmp,op) ) {	1611	if (object::can_merge (tmp, op))
		1612	{
1929	/* return the original object and remove inserted object	1613	/* return the original object and remove inserted object
1930	(client needs the original object) */	1614	(client needs the original object) */
1931	tmp->nrof += op->nrof;	1615	tmp->nrof += op->nrof;
1932	/* Weight handling gets pretty funky. Since we are adding to	1616
1933	* tmp->nrof, we need to increase the weight.	1617	if (object *pl = tmp->visible_to ())
1934	*/	1618	esrv_update_item (UPD_NROF, pl, tmp);
1935	add_weight (where, op->weight*op->nrof);	1619
1936	SET_FLAG(op, FLAG_REMOVED);	1620	adjust_weight (this, op->total_weight ());
1937	free_object(op); /* free the inserted object */	1621
		1622	op->destroy (1);
1938	op = tmp;	1623	op = tmp;
1939	remove_ob (op); /* and fix old object's links */	1624	goto inserted;
1940	CLEAR_FLAG(op, FLAG_REMOVED);
1941	break;
1942	}	1625	}
1943		1626
1944	/* I assume combined objects have no inventory	1627	op->owner = 0; // it's his/hers now. period.
1945	* We add the weight - this object could have just been removed	1628	op->map = 0;
1946	* (if it was possible to merge). calling remove_ob will subtract	1629	op->x = 0;
1947	* the weight, so we need to add it in again, since we actually do	1630	op->y = 0;
1948	* the linking below
1949	*/
1950	add_weight (where, op->weight*op->nrof);
1951	} else
1952	add_weight (where, (op->weight+op->carrying));
1953		1631
1954	otmp=is_player_inv(where);
1955	if (otmp&&otmp->contr!=NULL) {
1956	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1957	fix_player(otmp);
1958	}
1959
1960	op->map=NULL;
1961	op->env=where;
1962	op->above=NULL;	1632	op->above = 0;
1963	op->below=NULL;	1633	op->below = inv;
1964	op->x=0,op->y=0;	1634	op->env = this;
1965	op->ox=0,op->oy=0;
1966		1635
		1636	if (inv)
		1637	inv->above = op;
		1638
		1639	inv = op;
		1640
		1641	op->flag [FLAG_REMOVED] = 0;
		1642
		1643	if (object *pl = op->visible_to ())
		1644	esrv_send_item (pl, op);
		1645
		1646	adjust_weight (this, op->total_weight ());
		1647
		1648	inserted:
1967	/* reset the light list and los of the players on the map */	1649	/* reset the light list and los of the players on the map */
1968	if((op->glow_radius!=0)&&where->map)	1650	if (op->glow_radius && map && map->darkness)
1969	{	1651	update_all_los (map, x, y);
1970	#ifdef DEBUG_LIGHTS
1971	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",
1972	op->name);
1973	#endif /* DEBUG_LIGHTS */
1974	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1975	}
1976		1652
1977	/* Client has no idea of ordering so lets not bother ordering it here.	1653	// if this is a player's inventory, update stats
1978	* It sure simplifies this function...	1654	if (type == PLAYER && !flag [FLAG_NO_FIX_PLAYER])
1979	*/	1655	update_stats ();
1980	if (where->inv==NULL)	1656
1981	where->inv=op;	1657	INVOKE_OBJECT (INSERT, this);
1982	else {	1658
1983	op->below = where->inv;
1984	op->below->above = op;
1985	where->inv = op;
1986	}
1987	return op;	1659	return op;
1988	}	1660	}
1989		1661
1990	/*	1662	/*
1991	* Checks if any objects has a move_type that matches objects	1663	* Checks if any objects has a move_type that matches objects
…		…
2005	*	1677	*
2006	* MSW 2001-07-08: Check all objects on space, not just those below	1678	* MSW 2001-07-08: Check all objects on space, not just those below
2007	* object being inserted. insert_ob_in_map may not put new objects	1679	* object being inserted. insert_ob_in_map may not put new objects
2008	* on top.	1680	* on top.
2009	*/	1681	*/
2010		1682	int
2011	int check_move_on (object *op, object *originator)	1683	check_move_on (object *op, object *originator)
2012	{	1684	{
2013	object *tmp;	1685	object *tmp;
2014	tag_t tag;
2015	mapstruct *m=op->map;	1686	maptile *m = op->map;
2016	int x=op->x, y=op->y;	1687	int x = op->x, y = op->y;
		1688
2017	MoveType move_on, move_slow, move_block;	1689	MoveType move_on, move_slow, move_block;
2018		1690
2019	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1691	if (QUERY_FLAG (op, FLAG_NO_APPLY))
2020	return 0;
2021
2022	tag = op->count;
2023
2024	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
2025	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
2026	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
2027
2028	/* if nothing on this space will slow op down or be applied,
2029	* no need to do checking below. have to make sure move_type
2030	* is set, as lots of objects don't have it set - we treat that
2031	* as walking.
2032	*/
2033	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
2034	return 0;
2035
2036	/* This is basically inverse logic of that below - basically,
2037	* if the object can avoid the move on or slow move, they do so,
2038	* but can't do it if the alternate movement they are using is
2039	* blocked. Logic on this seems confusing, but does seem correct.
2040	*/
2041	if ((op->move_type & ~move_on & ~move_block) != 0 &&
2042	(op->move_type & ~move_slow & ~move_block) != 0) return 0;
2043
2044	/* The objects have to be checked from top to bottom.
2045	* Hence, we first go to the top:
2046	*/
2047
2048	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
2049	tmp->above!=NULL; tmp=tmp->above) {
2050	/* Trim the search when we find the first other spell effect
2051	* this helps performance so that if a space has 50 spell objects,
2052	* we don't need to check all of them.
2053	*/
2054	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
2055	}
2056	for(;tmp!=NULL; tmp=tmp->below) {
2057	if (tmp == op) continue; /* Can't apply yourself */
2058
2059	/* Check to see if one of the movement types should be slowed down.
2060	* Second check makes sure that the movement types not being slowed
2061	* (~slow_move) is not blocked on this space - just because the
2062	* space doesn't slow down swimming (for example), if you can't actually
2063	* swim on that space, can't use it to avoid the penalty.
2064	*/
2065	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {
2066	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
2067	((op->move_type & tmp->move_slow) &&
2068	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {
2069
2070	float diff;
2071
2072	diff = tmp->move_slow_penalty*FABS(op->speed);
2073	if (op->type == PLAYER) {
2074	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||
2075	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {
2076	diff /= 4.0;
2077	}
2078	}
2079	op->speed_left -= diff;
2080	}
2081	}
2082
2083	/* Basically same logic as above, except now for actual apply. */
2084	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
2085	((op->move_type & tmp->move_on) &&
2086	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {
2087
2088	move_apply(tmp, op, originator);
2089	if (was_destroyed (op, tag))
2090	return 1;
2091
2092	/* what the person/creature stepped onto has moved the object
2093	* someplace new. Don't process any further - if we did,
2094	* have a feeling strange problems would result.
2095	*/
2096	if (op->map != m || op->x != x || op->y != y) return 0;
2097	}
2098	}
2099	return 0;	1692	return 0;
		1693
		1694	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
		1695	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
		1696	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
		1697
		1698	/* if nothing on this space will slow op down or be applied,
		1699	* no need to do checking below. have to make sure move_type
		1700	* is set, as lots of objects don't have it set - we treat that
		1701	* as walking.
		1702	*/
		1703	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
		1704	return 0;
		1705
		1706	/* This is basically inverse logic of that below - basically,
		1707	* if the object can avoid the move on or slow move, they do so,
		1708	* but can't do it if the alternate movement they are using is
		1709	* blocked. Logic on this seems confusing, but does seem correct.
		1710	*/
		1711	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
		1712	return 0;
		1713
		1714	/* The objects have to be checked from top to bottom.
		1715	* Hence, we first go to the top:
		1716	*/
		1717
		1718	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
		1719	{
		1720	/* Trim the search when we find the first other spell effect
		1721	* this helps performance so that if a space has 50 spell objects,
		1722	* we don't need to check all of them.
		1723	*/
		1724	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1725	break;
		1726	}
		1727
		1728	for (; tmp; tmp = tmp->below)
		1729	{
		1730	if (tmp == op)
		1731	continue; /* Can't apply yourself */
		1732
		1733	/* Check to see if one of the movement types should be slowed down.
		1734	* Second check makes sure that the movement types not being slowed
		1735	* (~slow_move) is not blocked on this space - just because the
		1736	* space doesn't slow down swimming (for example), if you can't actually
		1737	* swim on that space, can't use it to avoid the penalty.
		1738	*/
		1739	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1740	{
		1741	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
		1742	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1743	{
		1744
		1745	float
		1746	diff = tmp->move_slow_penalty * fabs (op->speed);
		1747
		1748	if (op->type == PLAYER)
		1749	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
		1750	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
		1751	diff /= 4.0;
		1752
		1753	op->speed_left -= diff;
		1754	}
		1755	}
		1756
		1757	/* Basically same logic as above, except now for actual apply. */
		1758	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
		1759	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
		1760	{
		1761	move_apply (tmp, op, originator);
		1762
		1763	if (op->destroyed ())
		1764	return 1;
		1765
		1766	/* what the person/creature stepped onto has moved the object
		1767	* someplace new. Don't process any further - if we did,
		1768	* have a feeling strange problems would result.
		1769	*/
		1770	if (op->map != m || op->x != x || op->y != y)
		1771	return 0;
		1772	}
		1773	}
		1774
		1775	return 0;
2100	}	1776	}
2101		1777
2102	/*	1778	/*
2103	* present_arch(arch, map, x, y) searches for any objects with	1779	* present_arch(arch, map, x, y) searches for any objects with
2104	* a matching archetype at the given map and coordinates.	1780	* a matching archetype at the given map and coordinates.
2105	* The first matching object is returned, or NULL if none.	1781	* The first matching object is returned, or NULL if none.
2106	*/	1782	*/
2107		1783	object *
2108	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1784	present_arch (const archetype *at, maptile *m, int x, int y)
2109	object *tmp;	1785	{
2110	if(m==NULL || out_of_map(m,x,y)) {	1786	if (!m || out_of_map (m, x, y))
		1787	{
2111	LOG(llevError,"Present_arch called outside map.\n");	1788	LOG (llevError, "Present_arch called outside map.\n");
2112	return NULL;	1789	return NULL;
2113	}	1790	}
2114	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1791
2115	if(tmp->arch == at)	1792	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1793	if (tmp->arch->archname == at->archname)
2116	return tmp;	1794	return tmp;
		1795
2117	return NULL;	1796	return NULL;
2118	}	1797	}
2119		1798
2120	/*	1799	/*
2121	* present(type, map, x, y) searches for any objects with	1800	* present(type, map, x, y) searches for any objects with
2122	* a matching type variable at the given map and coordinates.	1801	* a matching type variable at the given map and coordinates.
2123	* The first matching object is returned, or NULL if none.	1802	* The first matching object is returned, or NULL if none.
2124	*/	1803	*/
2125		1804	object *
2126	object *present(unsigned char type,mapstruct *m, int x,int y) {	1805	present (unsigned char type, maptile *m, int x, int y)
2127	object *tmp;	1806	{
2128	if(out_of_map(m,x,y)) {	1807	if (out_of_map (m, x, y))
		1808	{
2129	LOG(llevError,"Present called outside map.\n");	1809	LOG (llevError, "Present called outside map.\n");
2130	return NULL;	1810	return NULL;
2131	}	1811	}
2132	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1812
		1813	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
2133	if(tmp->type==type)	1814	if (tmp->type == type)
2134	return tmp;	1815	return tmp;
		1816
2135	return NULL;	1817	return NULL;
2136	}	1818	}
2137		1819
2138	/*	1820	/*
2139	* present_in_ob(type, object) searches for any objects with	1821	* present_in_ob(type, object) searches for any objects with
2140	* a matching type variable in the inventory of the given object.	1822	* a matching type variable in the inventory of the given object.
2141	* The first matching object is returned, or NULL if none.	1823	* The first matching object is returned, or NULL if none.
2142	*/	1824	*/
2143		1825	object *
2144	object *present_in_ob(unsigned char type, const object *op) {	1826	present_in_ob (unsigned char type, const object *op)
2145	object *tmp;	1827	{
2146	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1828	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2147	if(tmp->type==type)	1829	if (tmp->type == type)
2148	return tmp;	1830	return tmp;
		1831
2149	return NULL;	1832	return NULL;
2150	}	1833	}
2151		1834
2152	/*	1835	/*
2153	* present_in_ob (type, str, object) searches for any objects with	1836	* present_in_ob (type, str, object) searches for any objects with
…		…
2161	* str is the string to match against. Note that we match against	1844	* str is the string to match against. Note that we match against
2162	* the object name, not the archetype name. this is so that the	1845	* the object name, not the archetype name. this is so that the
2163	* spell code can use one object type (force), but change it's name	1846	* spell code can use one object type (force), but change it's name
2164	* to be unique.	1847	* to be unique.
2165	*/	1848	*/
2166		1849	object *
2167	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1850	present_in_ob_by_name (int type, const char *str, const object *op)
2168	object *tmp;	1851	{
2169
2170	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1852	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2171	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1853	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2172	return tmp;	1854	return tmp;
2173	}	1855
2174	return NULL;	1856	return 0;
2175	}	1857	}
2176		1858
2177	/*	1859	/*
2178	* present_arch_in_ob(archetype, object) searches for any objects with	1860	* present_arch_in_ob(archetype, object) searches for any objects with
2179	* a matching archetype in the inventory of the given object.	1861	* a matching archetype in the inventory of the given object.
2180	* The first matching object is returned, or NULL if none.	1862	* The first matching object is returned, or NULL if none.
2181	*/	1863	*/
2182		1864	object *
2183	object *present_arch_in_ob(const archetype *at, const object *op) {	1865	present_arch_in_ob (const archetype *at, const object *op)
2184	object *tmp;	1866	{
2185	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1867	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2186	if( tmp->arch == at)	1868	if (tmp->arch->archname == at->archname)
2187	return tmp;	1869	return tmp;
		1870
2188	return NULL;	1871	return NULL;
2189	}	1872	}
2190		1873
2191	/*	1874	/*
2192	* activate recursively a flag on an object inventory	1875	* activate recursively a flag on an object inventory
2193	*/	1876	*/
		1877	void
2194	void flag_inv(object*op, int flag){	1878	flag_inv (object *op, int flag)
2195	object *tmp;	1879	{
2196	if(op->inv)
2197	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1880	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1881	{
2198	SET_FLAG(tmp, flag);	1882	SET_FLAG (tmp, flag);
2199	flag_inv(tmp,flag);	1883	flag_inv (tmp, flag);
2200	}	1884	}
		1885	}
		1886
2201	}/*	1887	/*
2202	* desactivate recursively a flag on an object inventory	1888	* deactivate recursively a flag on an object inventory
2203	*/	1889	*/
		1890	void
2204	void unflag_inv(object*op, int flag){	1891	unflag_inv (object *op, int flag)
2205	object *tmp;	1892	{
2206	if(op->inv)
2207	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1893	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1894	{
2208	CLEAR_FLAG(tmp, flag);	1895	CLEAR_FLAG (tmp, flag);
2209	unflag_inv(tmp,flag);	1896	unflag_inv (tmp, flag);
2210	}	1897	}
2211	}
2212
2213	/*
2214	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2215	* all it's inventory (recursively).
2216	* If checksums are used, a player will get set_cheat called for
2217	* him/her-self and all object carried by a call to this function.
2218	*/
2219
2220	void set_cheat(object *op) {
2221	SET_FLAG(op, FLAG_WAS_WIZ);
2222	flag_inv(op, FLAG_WAS_WIZ);
2223	}	1898	}
2224		1899
2225	/*	1900	/*
2226	* find_free_spot(object, map, x, y, start, stop) will search for	1901	* find_free_spot(object, map, x, y, start, stop) will search for
2227	* a spot at the given map and coordinates which will be able to contain	1902	* a spot at the given map and coordinates which will be able to contain
…		…
2229	* to search (see the freearr_x/y[] definition).	1904	* to search (see the freearr_x/y[] definition).
2230	* It returns a random choice among the alternatives found.	1905	* It returns a random choice among the alternatives found.
2231	* start and stop are where to start relative to the free_arr array (1,9	1906	* start and stop are where to start relative to the free_arr array (1,9
2232	* does all 4 immediate directions). This returns the index into the	1907	* does all 4 immediate directions). This returns the index into the
2233	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1908	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2234	* Note - this only checks to see if there is space for the head of the
2235	* object - if it is a multispace object, this should be called for all
2236	* pieces.
2237	* Note2: This function does correctly handle tiled maps, but does not	1909	* Note: This function does correctly handle tiled maps, but does not
2238	* inform the caller. However, insert_ob_in_map will update as	1910	* inform the caller. However, insert_ob_in_map will update as
2239	* necessary, so the caller shouldn't need to do any special work.	1911	* necessary, so the caller shouldn't need to do any special work.
2240	* Note - updated to take an object instead of archetype - this is necessary	1912	* Note - updated to take an object instead of archetype - this is necessary
2241	* because arch_blocked (now ob_blocked) needs to know the movement type	1913	* because arch_blocked (now ob_blocked) needs to know the movement type
2242	* to know if the space in question will block the object. We can't use	1914	* to know if the space in question will block the object. We can't use
2243	* the archetype because that isn't correct if the monster has been	1915	* the archetype because that isn't correct if the monster has been
2244	* customized, changed states, etc.	1916	* customized, changed states, etc.
2245	*/	1917	*/
2246		1918	int
2247	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1919	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1920	{
		1921	int altern[SIZEOFFREE];
2248	int i,index=0, flag;	1922	int index = 0, flag;
2249	static int altern[SIZEOFFREE];
2250		1923
2251	for(i=start;i<stop;i++) {	1924	for (int i = start; i < stop; i++)
2252	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1925	{
2253	if(!flag)	1926	mapxy pos (m, x, y); pos.move (i);
		1927
		1928	if (!pos.normalise ())
		1929	continue;
		1930
		1931	mapspace &ms = *pos;
		1932
		1933	if (ms.flags () & P_IS_ALIVE)
		1934	continue;
		1935
		1936	/* However, often
		1937	* ob doesn't have any move type (when used to place exits)
		1938	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		1939	*/
		1940	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		1941	{
2254	altern[index++]=i;	1942	altern [index++] = i;
		1943	continue;
		1944	}
2255		1945
2256	/* Basically, if we find a wall on a space, we cut down the search size.	1946	/* Basically, if we find a wall on a space, we cut down the search size.
2257	* In this way, we won't return spaces that are on another side of a wall.	1947	* In this way, we won't return spaces that are on another side of a wall.
2258	* This mostly work, but it cuts down the search size in all directions -	1948	* This mostly work, but it cuts down the search size in all directions -
2259	* if the space being examined only has a wall to the north and empty	1949	* if the space being examined only has a wall to the north and empty
2260	* spaces in all the other directions, this will reduce the search space	1950	* spaces in all the other directions, this will reduce the search space
2261	* to only the spaces immediately surrounding the target area, and	1951	* to only the spaces immediately surrounding the target area, and
2262	* won't look 2 spaces south of the target space.	1952	* won't look 2 spaces south of the target space.
2263	*/	1953	*/
2264	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1954	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		1955	{
2265	stop=maxfree[i];	1956	stop = maxfree[i];
2266	}	1957	continue;
2267	if(!index) return -1;	1958	}
2268	return altern[RANDOM()%index];
2269	}
2270		1959
		1960	/* Note it is intentional that we check ob - the movement type of the
		1961	* head of the object should correspond for the entire object.
		1962	*/
		1963	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		1964	continue;
		1965
		1966	if (ob->blocked (m, pos.x, pos.y))
		1967	continue;
		1968
		1969	altern [index++] = i;
		1970	}
		1971
		1972	if (!index)
		1973	return -1;
		1974
		1975	return altern [rndm (index)];
		1976	}
		1977
2271	/*	1978	/*
2272	* find_first_free_spot(archetype, mapstruct, x, y) works like	1979	* find_first_free_spot(archetype, maptile, x, y) works like
2273	* find_free_spot(), but it will search max number of squares.	1980	* find_free_spot(), but it will search max number of squares.
2274	* But it will return the first available spot, not a random choice.	1981	* But it will return the first available spot, not a random choice.
2275	* Changed 0.93.2: Have it return -1 if there is no free spot available.	1982	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2276	*/	1983	*/
2277		1984	int
2278	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	1985	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2279	int i;	1986	{
2280	for(i=0;i<SIZEOFFREE;i++) {	1987	for (int i = 0; i < SIZEOFFREE; i++)
2281	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	1988	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2282	return i;	1989	return i;
2283	}	1990
2284	return -1;	1991	return -1;
2285	}	1992	}
2286		1993
2287	/*	1994	/*
2288	* The function permute(arr, begin, end) randomly reorders the array	1995	* The function permute(arr, begin, end) randomly reorders the array
2289	* arr[begin..end-1].	1996	* arr[begin..end-1].
		1997	* now uses a fisher-yates shuffle, old permute was broken
2290	*/	1998	*/
		1999	static void
2291	static void permute(int *arr, int begin, int end)	2000	permute (int *arr, int begin, int end)
2292	{	2001	{
2293	int i, j, tmp, len;	2002	arr += begin;
		2003	end -= begin;
2294		2004
2295	len = end-begin;	2005	while (--end)
2296	for(i = begin; i < end; i++)	2006	swap (arr [end], arr [rndm (end + 1)]);
2297	{
2298	j = begin+RANDOM()%len;
2299
2300	tmp = arr[i];
2301	arr[i] = arr[j];
2302	arr[j] = tmp;
2303	}
2304	}	2007	}
2305		2008
2306	/* new function to make monster searching more efficient, and effective!	2009	/* new function to make monster searching more efficient, and effective!
2307	* This basically returns a randomized array (in the passed pointer) of	2010	* This basically returns a randomized array (in the passed pointer) of
2308	* the spaces to find monsters. In this way, it won't always look for	2011	* the spaces to find monsters. In this way, it won't always look for
2309	* monsters to the north first. However, the size of the array passed	2012	* monsters to the north first. However, the size of the array passed
2310	* covers all the spaces, so within that size, all the spaces within	2013	* covers all the spaces, so within that size, all the spaces within
2311	* the 3x3 area will be searched, just not in a predictable order.	2014	* the 3x3 area will be searched, just not in a predictable order.
2312	*/	2015	*/
		2016	void
2313	void get_search_arr(int *search_arr)	2017	get_search_arr (int *search_arr)
2314	{	2018	{
2315	int i;	2019	int i;
2316		2020
2317	for(i = 0; i < SIZEOFFREE; i++)	2021	for (i = 0; i < SIZEOFFREE; i++)
2318	{
2319	search_arr[i] = i;	2022	search_arr[i] = i;
2320	}
2321		2023
2322	permute(search_arr, 1, SIZEOFFREE1+1);	2024	permute (search_arr, 1, SIZEOFFREE1 + 1);
2323	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2025	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2324	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2026	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2325	}	2027	}
2326		2028
2327	/*	2029	/*
2328	* find_dir(map, x, y, exclude) will search some close squares in the	2030	* find_dir(map, x, y, exclude) will search some close squares in the
2329	* given map at the given coordinates for live objects.	2031	* given map at the given coordinates for live objects.
…		…
2334	* Perhaps incorrectly, but I'm making the assumption that exclude	2036	* Perhaps incorrectly, but I'm making the assumption that exclude
2335	* is actually want is going to try and move there. We need this info	2037	* is actually want is going to try and move there. We need this info
2336	* because we have to know what movement the thing looking to move	2038	* because we have to know what movement the thing looking to move
2337	* there is capable of.	2039	* there is capable of.
2338	*/	2040	*/
2339		2041	int
2340	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2042	find_dir (maptile *m, int x, int y, object *exclude)
		2043	{
2341	int i,max=SIZEOFFREE, mflags;	2044	int i, max = SIZEOFFREE, mflags;
		2045
2342	sint16 nx, ny;	2046	sint16 nx, ny;
2343	object *tmp;	2047	object *tmp;
2344	mapstruct *mp;	2048	maptile *mp;
		2049
2345	MoveType blocked, move_type;	2050	MoveType blocked, move_type;
2346		2051
2347	if (exclude && exclude->head) {	2052	if (exclude && exclude->head_ () != exclude)
		2053	{
2348	exclude = exclude->head;	2054	exclude = exclude->head;
2349	move_type = exclude->move_type;	2055	move_type = exclude->move_type;
2350	} else {	2056	}
		2057	else
		2058	{
2351	/* If we don't have anything, presume it can use all movement types. */	2059	/* If we don't have anything, presume it can use all movement types. */
2352	move_type=MOVE_ALL;	2060	move_type = MOVE_ALL;
		2061	}
		2062
		2063	for (i = 1; i < max; i++)
2353	}	2064	{
2354		2065	mp = m;
2355	for(i=1;i<max;i++) {
2356	mp = m;
2357	nx = x + freearr_x[i];	2066	nx = x + freearr_x[i];
2358	ny = y + freearr_y[i];	2067	ny = y + freearr_y[i];
2359		2068
2360	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2069	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2070
2361	if (mflags & P_OUT_OF_MAP) {	2071	if (mflags & P_OUT_OF_MAP)
2362	max = maxfree[i];	2072	max = maxfree[i];
2363	} else {	2073	else
2364	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);	2074	{
		2075	mapspace &ms = mp->at (nx, ny);
2365		2076
		2077	blocked = ms.move_block;
		2078
2366	if ((move_type & blocked) == move_type) {	2079	if ((move_type & blocked) == move_type)
2367	max=maxfree[i];	2080	max = maxfree[i];
2368	} else if (mflags & P_IS_ALIVE) {	2081	else if (mflags & P_IS_ALIVE)
2369	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2082	{
2370	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2083	for (tmp = ms.bot; tmp; tmp = tmp->above)
2371	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2084	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2372	break;	2085	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2373	}	2086	break;
2374	}	2087
2375	if(tmp) {	2088	if (tmp)
2376	return freedir[i];	2089	return freedir[i];
2377	}	2090	}
		2091	}
2378	}	2092	}
2379	}	2093
2380	}
2381	return 0;	2094	return 0;
2382	}	2095	}
2383		2096
2384	/*	2097	/*
2385	* distance(object 1, object 2) will return the square of the	2098	* distance(object 1, object 2) will return the square of the
2386	* distance between the two given objects.	2099	* distance between the two given objects.
2387	*/	2100	*/
2388		2101	int
2389	int distance(const object *ob1, const object *ob2) {	2102	distance (const object *ob1, const object *ob2)
2390	int i;	2103	{
2391	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2104	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2392	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2393	return i;
2394	}	2105	}
2395		2106
2396	/*	2107	/*
2397	* find_dir_2(delta-x,delta-y) will return a direction in which	2108	* find_dir_2(delta-x,delta-y) will return a direction in which
2398	* an object which has subtracted the x and y coordinates of another	2109	* an object which has subtracted the x and y coordinates of another
2399	* object, needs to travel toward it.	2110	* object, needs to travel toward it.
2400	*/	2111	*/
2401		2112	int
2402	int find_dir_2(int x, int y) {	2113	find_dir_2 (int x, int y)
		2114	{
2403	int q;	2115	int q;
2404		2116
2405	if(y)	2117	if (y)
2406	q=x*100/y;	2118	q = x * 100 / y;
2407	else if (x)	2119	else if (x)
2408	q= -300*x;	2120	q = -300 * x;
2409	else	2121	else
2410	return 0;	2122	return 0;
2411		2123
2412	if(y>0) {	2124	if (y > 0)
		2125	{
2413	if(q < -242)	2126	if (q < -242)
2414	return 3 ;	2127	return 3;
2415	if (q < -41)	2128	if (q < -41)
2416	return 2 ;	2129	return 2;
2417	if (q < 41)	2130	if (q < 41)
2418	return 1 ;	2131	return 1;
2419	if (q < 242)	2132	if (q < 242)
2420	return 8 ;	2133	return 8;
2421	return 7 ;	2134	return 7;
2422	}	2135	}
2423		2136
2424	if (q < -242)	2137	if (q < -242)
2425	return 7 ;	2138	return 7;
2426	if (q < -41)	2139	if (q < -41)
2427	return 6 ;	2140	return 6;
2428	if (q < 41)	2141	if (q < 41)
2429	return 5 ;	2142	return 5;
2430	if (q < 242)	2143	if (q < 242)
2431	return 4 ;	2144	return 4;
2432		2145
2433	return 3 ;	2146	return 3;
2434	}
2435
2436	/*
2437	* absdir(int): Returns a number between 1 and 8, which represent
2438	* the "absolute" direction of a number (it actually takes care of
2439	* "overflow" in previous calculations of a direction).
2440	*/
2441
2442	int absdir(int d) {
2443	while(d<1) d+=8;
2444	while(d>8) d-=8;
2445	return d;
2446	}	2147	}
2447		2148
2448	/*	2149	/*
2449	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2150	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2450	* between two directions (which are expected to be absolute (see absdir())	2151	* between two directions (which are expected to be absolute (see absdir())
2451	*/	2152	*/
2452		2153	int
2453	int dirdiff(int dir1, int dir2) {	2154	dirdiff (int dir1, int dir2)
		2155	{
2454	int d;	2156	int d;
		2157
2455	d = abs(dir1 - dir2);	2158	d = abs (dir1 - dir2);
2456	if(d>4)	2159	if (d > 4)
2457	d = 8 - d;	2160	d = 8 - d;
		2161
2458	return d;	2162	return d;
2459	}	2163	}
2460		2164
2461	/* peterm:	2165	/* peterm:
2462	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2166	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2465	* This basically means that if direction is 15, then it could either go	2169	* This basically means that if direction is 15, then it could either go
2466	* direction 4, 14, or 16 to get back to where we are.	2170	* direction 4, 14, or 16 to get back to where we are.
2467	* Moved from spell_util.c to object.c with the other related direction	2171	* Moved from spell_util.c to object.c with the other related direction
2468	* functions.	2172	* functions.
2469	*/	2173	*/
2470
2471	int reduction_dir[SIZEOFFREE][3] = {	2174	int reduction_dir[SIZEOFFREE][3] = {
2472	{0,0,0}, /* 0 */	2175	{0, 0, 0}, /* 0 */
2473	{0,0,0}, /* 1 */	2176	{0, 0, 0}, /* 1 */
2474	{0,0,0}, /* 2 */	2177	{0, 0, 0}, /* 2 */
2475	{0,0,0}, /* 3 */	2178	{0, 0, 0}, /* 3 */
2476	{0,0,0}, /* 4 */	2179	{0, 0, 0}, /* 4 */
2477	{0,0,0}, /* 5 */	2180	{0, 0, 0}, /* 5 */
2478	{0,0,0}, /* 6 */	2181	{0, 0, 0}, /* 6 */
2479	{0,0,0}, /* 7 */	2182	{0, 0, 0}, /* 7 */
2480	{0,0,0}, /* 8 */	2183	{0, 0, 0}, /* 8 */
2481	{8,1,2}, /* 9 */	2184	{8, 1, 2}, /* 9 */
2482	{1,2,-1}, /* 10 */	2185	{1, 2, -1}, /* 10 */
2483	{2,10,12}, /* 11 */	2186	{2, 10, 12}, /* 11 */
2484	{2,3,-1}, /* 12 */	2187	{2, 3, -1}, /* 12 */
2485	{2,3,4}, /* 13 */	2188	{2, 3, 4}, /* 13 */
2486	{3,4,-1}, /* 14 */	2189	{3, 4, -1}, /* 14 */
2487	{4,14,16}, /* 15 */	2190	{4, 14, 16}, /* 15 */
2488	{5,4,-1}, /* 16 */	2191	{5, 4, -1}, /* 16 */
2489	{4,5,6}, /* 17 */	2192	{4, 5, 6}, /* 17 */
2490	{6,5,-1}, /* 18 */	2193	{6, 5, -1}, /* 18 */
2491	{6,20,18}, /* 19 */	2194	{6, 20, 18}, /* 19 */
2492	{7,6,-1}, /* 20 */	2195	{7, 6, -1}, /* 20 */
2493	{6,7,8}, /* 21 */	2196	{6, 7, 8}, /* 21 */
2494	{7,8,-1}, /* 22 */	2197	{7, 8, -1}, /* 22 */
2495	{8,22,24}, /* 23 */	2198	{8, 22, 24}, /* 23 */
2496	{8,1,-1}, /* 24 */	2199	{8, 1, -1}, /* 24 */
2497	{24,9,10}, /* 25 */	2200	{24, 9, 10}, /* 25 */
2498	{9,10,-1}, /* 26 */	2201	{9, 10, -1}, /* 26 */
2499	{10,11,-1}, /* 27 */	2202	{10, 11, -1}, /* 27 */
2500	{27,11,29}, /* 28 */	2203	{27, 11, 29}, /* 28 */
2501	{11,12,-1}, /* 29 */	2204	{11, 12, -1}, /* 29 */
2502	{12,13,-1}, /* 30 */	2205	{12, 13, -1}, /* 30 */
2503	{12,13,14}, /* 31 */	2206	{12, 13, 14}, /* 31 */
2504	{13,14,-1}, /* 32 */	2207	{13, 14, -1}, /* 32 */
2505	{14,15,-1}, /* 33 */	2208	{14, 15, -1}, /* 33 */
2506	{33,15,35}, /* 34 */	2209	{33, 15, 35}, /* 34 */
2507	{16,15,-1}, /* 35 */	2210	{16, 15, -1}, /* 35 */
2508	{17,16,-1}, /* 36 */	2211	{17, 16, -1}, /* 36 */
2509	{18,17,16}, /* 37 */	2212	{18, 17, 16}, /* 37 */
2510	{18,17,-1}, /* 38 */	2213	{18, 17, -1}, /* 38 */
2511	{18,19,-1}, /* 39 */	2214	{18, 19, -1}, /* 39 */
2512	{41,19,39}, /* 40 */	2215	{41, 19, 39}, /* 40 */
2513	{19,20,-1}, /* 41 */	2216	{19, 20, -1}, /* 41 */
2514	{20,21,-1}, /* 42 */	2217	{20, 21, -1}, /* 42 */
2515	{20,21,22}, /* 43 */	2218	{20, 21, 22}, /* 43 */
2516	{21,22,-1}, /* 44 */	2219	{21, 22, -1}, /* 44 */
2517	{23,22,-1}, /* 45 */	2220	{23, 22, -1}, /* 45 */
2518	{45,47,23}, /* 46 */	2221	{45, 47, 23}, /* 46 */
2519	{23,24,-1}, /* 47 */	2222	{23, 24, -1}, /* 47 */
2520	{24,9,-1}}; /* 48 */	2223	{24, 9, -1}
		2224	}; /* 48 */
2521		2225
2522	/* Recursive routine to step back and see if we can	2226	/* Recursive routine to step back and see if we can
2523	* find a path to that monster that we found. If not,	2227	* find a path to that monster that we found. If not,
2524	* we don't bother going toward it. Returns 1 if we	2228	* we don't bother going toward it. Returns 1 if we
2525	* can see a direct way to get it	2229	* can see a direct way to get it
2526	* Modified to be map tile aware -.MSW	2230	* Modified to be map tile aware -.MSW
2527	*/	2231	*/
2528		2232	int
2529
2530	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2233	can_see_monsterP (maptile *m, int x, int y, int dir)
		2234	{
2531	sint16 dx, dy;	2235	sint16 dx, dy;
2532	int mflags;	2236	int mflags;
2533		2237
		2238	if (dir < 0)
2534	if(dir<0) return 0; /* exit condition: invalid direction */	2239	return 0; /* exit condition: invalid direction */
2535		2240
2536	dx = x + freearr_x[dir];	2241	dx = x + freearr_x[dir];
2537	dy = y + freearr_y[dir];	2242	dy = y + freearr_y[dir];
2538		2243
2539	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2244	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2540		2245
2541	/* This functional arguably was incorrect before - it was	2246	/* This functional arguably was incorrect before - it was
2542	* checking for P_WALL - that was basically seeing if	2247	* checking for P_WALL - that was basically seeing if
2543	* we could move to the monster - this is being more	2248	* we could move to the monster - this is being more
2544	* literal on if we can see it. To know if we can actually	2249	* literal on if we can see it. To know if we can actually
2545	* move to the monster, we'd need the monster passed in or	2250	* move to the monster, we'd need the monster passed in or
2546	* at least its move type.	2251	* at least its move type.
2547	*/	2252	*/
2548	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2253	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2254	return 0;
2549		2255
2550	/* yes, can see. */	2256	/* yes, can see. */
2551	if(dir < 9) return 1;	2257	if (dir < 9)
		2258	return 1;
		2259
2552	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2260	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2553	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2261	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2554	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2262	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2555	}	2263	}
2556		2264
2557
2558
2559	/*	2265	/*
2560	* can_pick(picker, item): finds out if an object is possible to be	2266	* can_pick(picker, item): finds out if an object is possible to be
2561	* picked up by the picker. Returnes 1 if it can be	2267	* picked up by the picker. Returnes 1 if it can be
2562	* picked up, otherwise 0.	2268	* picked up, otherwise 0.
2563	*	2269	*
2564	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2270	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2565	* core dumps if they do.	2271	* core dumps if they do.
2566	*	2272	*
2567	* Add a check so we can't pick up invisible objects (0.93.8)	2273	* Add a check so we can't pick up invisible objects (0.93.8)
2568	*/	2274	*/
2569		2275	int
2570	int can_pick(const object *who, const object *item) {	2276	can_pick (const object *who, const object *item)
		2277	{
2571	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2278	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2572	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2279	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2573	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2280	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2574	(who->type==PLAYER||item->weight<who->weight/3));
2575	}	2281	}
2576
2577		2282
2578	/*	2283	/*
2579	* create clone from object to another	2284	* create clone from object to another
2580	*/	2285	*/
2581	object *object_create_clone (object *asrc) {	2286	object *
2582	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2287	object::deep_clone ()
		2288	{
		2289	assert (("deep_clone called on non-head object", is_head ()));
2583		2290
2584	if(!asrc) return NULL;	2291	object *dst = clone ();
2585	src = asrc;
2586	if(src->head)
2587	src = src->head;
2588		2292
2589	prev = NULL;	2293	object *prev = dst;
2590	for(part = src; part; part = part->more) {	2294	for (object *part = this->more; part; part = part->more)
2591	tmp = get_object();	2295	{
2592	copy_object(part,tmp);	2296	object *tmp = part->clone ();
2593	tmp->x -= src->x;
2594	tmp->y -= src->y;
2595	if(!part->head) {
2596	dst = tmp;
2597	tmp->head = NULL;
2598	} else {
2599	tmp->head = dst;	2297	tmp->head = dst;
2600	}
2601	tmp->more = NULL;
2602	if(prev)
2603	prev->more = tmp;	2298	prev->more = tmp;
2604	prev = tmp;	2299	prev = tmp;
2605	}	2300	}
2606	/*** copy inventory ***/	2301
2607	for(item = src->inv; item; item = item->below) {	2302	for (object *item = inv; item; item = item->below)
2608	(void) insert_ob_in_ob(object_create_clone(item),dst);	2303	insert_ob_in_ob (item->deep_clone (), dst);
2609	}
2610		2304
2611	return dst;	2305	return dst;
2612	}
2613
2614	/* return true if the object was destroyed, 0 otherwise */
2615	int was_destroyed (const object *op, tag_t old_tag)
2616	{
2617	/* checking for FLAG_FREED isn't necessary, but makes this function more
2618	* robust */
2619	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2620	}
2621
2622	/* GROS - Creates an object using a string representing its content. */
2623	/* Basically, we save the content of the string to a temp file, then call */
2624	/* load_object on it. I admit it is a highly inefficient way to make things, */
2625	/* but it was simple to make and allows reusing the load_object function. */
2626	/* Remember not to use load_object_str in a time-critical situation. */
2627	/* Also remember that multiparts objects are not supported for now. */
2628
2629	object* load_object_str(const char *obstr)
2630	{
2631	object *op;
2632	FILE *tempfile;
2633	char filename[MAX_BUF];
2634	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2635	tempfile=fopen(filename,"w");
2636	if (tempfile == NULL)
2637	{
2638	LOG(llevError,"Error - Unable to access load object temp file\n");
2639	return NULL;
2640	};
2641	fprintf(tempfile,obstr);
2642	fclose(tempfile);
2643
2644	op=get_object();
2645
2646	tempfile=fopen(filename,"r");
2647	if (tempfile == NULL)
2648	{
2649	LOG(llevError,"Error - Unable to read object temp file\n");
2650	return NULL;
2651	};
2652	load_object(tempfile,op,LO_NEWFILE,0);
2653	LOG(llevDebug," load str completed, object=%s\n",op->name);
2654	CLEAR_FLAG(op,FLAG_REMOVED);
2655	fclose(tempfile);
2656	return op;
2657	}	2306	}
2658		2307
2659	/* This returns the first object in who's inventory that	2308	/* This returns the first object in who's inventory that
2660	* has the same type and subtype match.	2309	* has the same type and subtype match.
2661	* returns NULL if no match.	2310	* returns NULL if no match.
2662	*/	2311	*/
		2312	object *
2663	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2313	find_obj_by_type_subtype (const object *who, int type, int subtype)
2664	{	2314	{
2665	object *tmp;
2666
2667	for (tmp=who->inv; tmp; tmp=tmp->below)	2315	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2668	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2316	if (tmp->type == type && tmp->subtype == subtype)
		2317	return tmp;
2669		2318
2670	return NULL;	2319	return 0;
2671	}	2320	}
2672		2321
2673	/* If ob has a field named key, return the link from the list,	2322	const shstr &
2674	* otherwise return NULL.	2323	object::kv_get (const shstr &key) const
2675	*	2324	{
2676	* key must be a passed in shared string - otherwise, this won't	2325	for (key_value *kv = key_values; kv; kv = kv->next)
2677	* do the desired thing.	2326	if (kv->key == key)
2678	*/	2327	return kv->value;
2679	key_value * get_ob_key_link(const object * ob, const char * key) {	2328
2680	key_value * link;	2329	return shstr_null;
		2330	}
		2331
		2332	void
		2333	object::kv_set (const shstr &key, const shstr &value)
		2334	{
		2335	for (key_value *kv = key_values; kv; kv = kv->next)
		2336	if (kv->key == key)
		2337	{
		2338	kv->value = value;
		2339	return;
		2340	}
		2341
		2342	key_value *kv = new key_value;
		2343
		2344	kv->next = key_values;
		2345	kv->key = key;
		2346	kv->value = value;
		2347
		2348	key_values = kv;
		2349	}
		2350
		2351	void
		2352	object::kv_del (const shstr &key)
		2353	{
		2354	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2355	if ((*kvp)->key == key)
		2356	{
		2357	key_value *kv = *kvp;
		2358	*kvp = (*kvp)->next;
		2359	delete kv;
		2360	return;
		2361	}
		2362	}
		2363
		2364	object::depth_iterator::depth_iterator (object *container)
		2365	: iterator_base (container)
		2366	{
		2367	while (item->inv)
		2368	item = item->inv;
		2369	}
		2370
		2371	void
		2372	object::depth_iterator::next ()
		2373	{
		2374	if (item->below)
2681		2375	{
2682	for (link = ob->key_values; link != NULL; link = link->next) {	2376	item = item->below;
2683	if (link->key == key) {	2377
2684	return link;	2378	while (item->inv)
		2379	item = item->inv;
		2380	}
		2381	else
		2382	item = item->env;
		2383	}
		2384
		2385	const char *
		2386	object::flag_desc (char *desc, int len) const
		2387	{
		2388	char *p = desc;
		2389	bool first = true;
		2390
		2391	*p = 0;
		2392
		2393	for (int i = 0; i < NUM_FLAGS; i++)
		2394	{
		2395	if (len <= 10) // magic constant!
		2396	{
		2397	snprintf (p, len, ",...");
		2398	break;
2685	}	2399	}
2686	}
2687
2688	return NULL;
2689	}
2690		2400
2691	/*	2401	if (flag [i])
2692	* Returns the value of op has an extra_field for key, or NULL.
2693	*
2694	* The argument doesn't need to be a shared string.
2695	*
2696	* The returned string is shared.
2697	*/
2698	const char * get_ob_key_value(const object * op, const char * const key) {
2699	key_value * link;
2700	const char * canonical_key;
2701
2702	canonical_key = find_string(key);
2703
2704	if (canonical_key == NULL) {
2705	/* 1. There being a field named key on any object
2706	* implies there'd be a shared string to find.
2707	* 2. Since there isn't, no object has this field.
2708	* 3. Therefore, *this* object doesn't have this field.
2709	*/	2402	{
2710	return NULL;	2403	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2711	}	2404	len -= cnt;
2712		2405	p += cnt;
2713	/* This is copied from get_ob_key_link() above -	2406	first = false;
2714	* only 4 lines, and saves the function call overhead.
2715	*/
2716	for (link = op->key_values; link != NULL; link = link->next) {
2717	if (link->key == canonical_key) {
2718	return link->value;
2719	}	2407	}
2720	}	2408	}
		2409
		2410	return desc;
		2411	}
		2412
		2413	// return a suitable string describing an object in enough detail to find it
		2414	const char *
		2415	object::debug_desc (char *info) const
		2416	{
		2417	char flagdesc[512];
		2418	char info2[256 * 4];
		2419	char *p = info;
		2420
		2421	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2422	count,
		2423	uuid.c_str (),
		2424	&name,
		2425	title ? "\",title:\"" : "",
		2426	title ? (const char *)title : "",
		2427	flag_desc (flagdesc, 512), type);
		2428
		2429	if (!flag[FLAG_REMOVED] && env)
		2430	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2431
		2432	if (map)
		2433	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2434
		2435	return info;
		2436	}
		2437
		2438	const char *
		2439	object::debug_desc () const
		2440	{
		2441	static char info[3][256 * 4];
		2442	static int info_idx;
		2443
		2444	return debug_desc (info [++info_idx % 3]);
		2445	}
		2446
		2447	struct region *
		2448	object::region () const
		2449	{
		2450	return map ? map->region (x, y)
		2451	: region::default_region ();
		2452	}
		2453
		2454	const materialtype_t *
		2455	object::dominant_material () const
		2456	{
		2457	if (materialtype_t *mt = name_to_material (materialname))
		2458	return mt;
		2459
		2460	return name_to_material (shstr_unknown);
		2461	}
		2462
		2463	void
		2464	object::open_container (object *new_container)
		2465	{
		2466	if (container == new_container)
2721	return NULL;	2467	return;
2722	}
2723		2468
		2469	object *old_container = container;
2724		2470
2725	/*	2471	if (old_container)
2726	* Updates the canonical_key in op to value.
2727	*
2728	* canonical_key is a shared string (value doesn't have to be).
2729	*
2730	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2731	* keys.
2732	*
2733	* Returns TRUE on success.
2734	*/
2735	int set_ob_key_value_s(object * op, const char * canonical_key, const char * value, int add_key) {
2736	key_value * field = NULL, *last=NULL;
2737		2472	{
2738	for (field=op->key_values; field != NULL; field=field->next) {	2473	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2739	if (field->key != canonical_key) {	2474	return;
2740	last = field;	2475
2741	continue;	2476	#if 0
2742	}	2477	// remove the "Close old_container" object.
2743		2478	if (object *closer = old_container->inv)
2744	if (field->value) FREE_AND_CLEAR_STR(field->value);	2479	if (closer->type == CLOSE_CON)
2745	if (value)	2480	closer->destroy ();
2746	field->value = add_string(value);	2481	#endif
2747	else {	2482
2748	/* Basically, if the archetype has this key set,	2483	// make sure the container is available
2749	* we need to store the null value so when we save	2484	esrv_send_item (this, old_container);
2750	* it, we save the empty value so that when we load,	2485
2751	* we get this value back again.	2486	old_container->flag [FLAG_APPLIED] = false;
2752	*/	2487	container = 0;
2753	if (get_ob_key_link(&op->arch->clone, canonical_key))	2488
2754	field->value = NULL;	2489	// client needs item update to make it work, client bug requires this to be separate
2755	else {	2490	esrv_update_item (UPD_FLAGS, this, old_container);
2756	/* Delete this link */	2491
2757	if (field->key) FREE_AND_CLEAR_STR(field->key);	2492	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
2758	if (field->value) FREE_AND_CLEAR_STR(field->value);	2493	play_sound (sound_find ("chest_close"));
2759	if (last) last->next = field->next;
2760	else op->key_values = field->next;
2761	free(field);
2762	}	2494	}
2763	}
2764	return TRUE;
2765	}
2766	/* IF we get here, key doesn't exist */
2767		2495
2768	/* No field, we'll have to add it. */	2496	if (new_container)
2769		2497	{
2770	if (!add_key) {	2498	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
2771	return FALSE;	2499	return;
2772	}	2500
2773	/* There isn't any good reason to store a null	2501	// TODO: this does not seem to serve any purpose anymore?
2774	* value in the key/value list. If the archetype has	2502	#if 0
2775	* this key, then we should also have it, so shouldn't	2503	// insert the "Close Container" object.
2776	* be here. If user wants to store empty strings,	2504	if (archetype *closer = new_container->other_arch)
2777	* should pass in ""	2505	{
2778	*/	2506	object *closer = arch_to_object (new_container->other_arch);
2779	if (value == NULL) return TRUE;	2507	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2508	new_container->insert (closer);
		2509	}
		2510	#endif
		2511
		2512	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2513
		2514	// make sure the container is available, client bug requires this to be separate
		2515	esrv_send_item (this, new_container);
		2516
		2517	new_container->flag [FLAG_APPLIED] = true;
		2518	container = new_container;
		2519
		2520	// client needs flag change
		2521	esrv_update_item (UPD_FLAGS, this, new_container);
		2522	esrv_send_inventory (this, new_container);
		2523	play_sound (sound_find ("chest_open"));
2780		2524	}
2781	field = (key_value *) malloc(sizeof(key_value));	2525	// else if (!old_container->env && contr && contr->ns)
		2526	// contr->ns->floorbox_reset ();
		2527	}
		2528
		2529	object *
		2530	object::force_find (const shstr name)
		2531	{
		2532	/* cycle through his inventory to look for the MARK we want to
		2533	* place
		2534	*/
		2535	for (object *tmp = inv; tmp; tmp = tmp->below)
		2536	if (tmp->type == FORCE && tmp->slaying == name)
		2537	return splay (tmp);
		2538
		2539	return 0;
		2540	}
		2541
		2542	void
		2543	object::force_add (const shstr name, int duration)
		2544	{
		2545	if (object *force = force_find (name))
		2546	force->destroy ();
		2547
		2548	object *force = get_archetype (FORCE_NAME);
		2549
		2550	force->slaying = name;
		2551	force->stats.food = 1;
		2552	force->speed_left = -1.f;
		2553
		2554	force->set_speed (duration ? 1.f / duration : 0.f);
		2555	force->flag [FLAG_IS_USED_UP] = true;
		2556	force->flag [FLAG_APPLIED] = true;
		2557
		2558	insert (force);
		2559	}
		2560
		2561	void
		2562	object::play_sound (faceidx sound)
		2563	{
		2564	if (!sound)
		2565	return;
		2566
		2567	if (flag [FLAG_REMOVED])
		2568	return;
		2569
		2570	if (env)
2782		2571	{
2783	field->key = add_refcount(canonical_key);	2572	if (object *pl = in_player ())
2784	field->value = add_string(value);	2573	pl->contr->play_sound (sound);
2785	/* Usual prepend-addition. */
2786	field->next = op->key_values;
2787	op->key_values = field;
2788		2574	}
2789	return TRUE;	2575	else
		2576	map->play_sound (sound, x, y);
2790	}	2577	}
2791		2578
2792	/*
2793	* Updates the key in op to value.
2794	*
2795	* If add_key is FALSE, this will only update existing keys,
2796	* and not add new ones.
2797	* In general, should be little reason FALSE is ever passed in for add_key
2798	*
2799	* Returns TRUE on success.
2800	*/
2801	int set_ob_key_value(object * op, const char * key, const char * value, int add_key) {
2802	const char * canonical_key = NULL;
2803	int floating_ref = FALSE;
2804	int ret;
2805
2806	/* HACK This mess is to make sure set_ob_value() passes a shared string
2807	* to get_ob_key_link(), without leaving a leaked refcount.
2808	*/
2809
2810	canonical_key = find_string(key);
2811	if (canonical_key == NULL) {
2812	canonical_key = add_string(key);
2813	floating_ref = TRUE;
2814	}
2815
2816	ret = set_ob_key_value_s(op, canonical_key, value, add_key);
2817
2818	if (floating_ref) {
2819	free_string(canonical_key);
2820	}
2821
2822	return ret;
2823	}

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