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Comparing deliantra/server/common/object.C (file contents):
Revision 1.14 by root, Mon Sep 4 11:07:59 2006 UTC vs.
Revision 1.228 by root, Sat May 3 11:14:50 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 1.14 2006/09/04 11:07:59 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	int nrofallocobjects = 0;
43		31
44	object *objects; /* Pointer to the list of used objects */	32	#include <bitset>
45	object *active_objects; /* List of active objects that need to be processed */
46		33
		34	UUID UUID::cur;
		35	static uint64_t seq_next_save;
		36	static const uint64 UUID_GAP = 1<<19;
		37
		38	objectvec objects;
		39	activevec actives;
		40
47	short freearr_x[SIZEOFFREE]=	41	short freearr_x[SIZEOFFREE] = {
48	{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,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	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	};
50	short freearr_y[SIZEOFFREE]=	47	short freearr_y[SIZEOFFREE] = {
51	{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,
52	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	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	};
53	int maxfree[SIZEOFFREE]=	53	int maxfree[SIZEOFFREE] = {
54	{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,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	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	};
56	int freedir[SIZEOFFREE]= {	59	int freedir[SIZEOFFREE] = {
57	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,
58	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	};
59		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	}
60		139
61	/* 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
62	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)
63	key_value * wants_field;	143	{
64
65	/* 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
66	* 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
67	* different structure or at least keep the lists sorted...	146	* different structure or at least keep the lists sorted...
68	*/	147	*/
69		148
70	/* For each field in wants, */	149	/* For each field in wants, */
71	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)
72	key_value * has_field;	151	if (has->kv_get (kv->key) != kv->value)
73		152	return false;
74	/* Look for a field in has with the same key. */	153
75	has_field = get_ob_key_link(has, wants_field->key);
76
77	if (has_field == NULL) {
78	/* No field with that name. */
79	return FALSE;
80	}
81
82	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {
84	/* Values don't match, so this half of the comparison is false. */
85	return FALSE;
86	}
87
88	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90
91	/* 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. */
92	return TRUE;	155	return true;
93	}	156	}
94		157
95	/* 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
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	160	compare_ob_value_lists (const object *ob1, const object *ob2)
		161	{
97	/* 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,
98	* so we need to run the comparison *twice*. :(	163	* so we need to run the comparison *twice*. :(
99	*/	164	*/
100	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);
101	}	167	}
102		168
103	/* 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
104	* they can be merged together.	170	* they can be merged together.
105	*	171	*
106	* 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
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	173	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	174	* reduce this to the same efficiency.
109	*	175	*
110	* Check nrof variable *before* calling CAN_MERGE()	176	* Check nrof variable *before* calling can_merge()
111	*	177	*
112	* Improvements made with merge: Better checking on potion, and also	178	* Improvements made with merge: Better checking on potion, and also
113	* check weight	179	* check weight
114	*/	180	*/
115		181	bool object::can_merge_slow (object *ob1, object *ob2)
116	int CAN_MERGE(object *ob1, object *ob2) {	182	{
117
118	/* A couple quicksanity checks */	183	/* A couple quicksanity checks */
119	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;
120		190
121	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
122	/* 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
123	* 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
124	* check?	273	* check?
125	*/	274	*/
126	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	275	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
		276	return 0;
		277
		278	switch (ob1->type)
		279	{
		280	case SCROLL:
		281	if (ob1->level != ob2->level)
		282	return 0;
		283	break;
		284	}
		285
		286	if (ob1->key_values || ob2->key_values)
		287	{
		288	/* At least one of these has key_values. */
		289	if ((!ob1->key_values) != (!ob2->key_values))
		290	return 0; /* One has fields, but the other one doesn't. */
		291
		292	if (!compare_ob_value_lists (ob1, ob2))
127	return 0;	293	return 0;
		294	}
128		295
129	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	296	if (ob1->self || ob2->self)
130	* value could not be stored in a sint32 (which unfortunately sometimes is
131	* used to store nrof).
132	*/
133	if (ob1->nrof+ob2->nrof >= 1UL<<31)
134	return 0;
135
136	/* This is really a spellbook check - really, we should
137	* check all objects in the inventory.
138	*/
139	if (ob1->inv || ob2->inv) {
140	/* if one object has inventory but the other doesn't, not equiv */
141	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
142
143	/* Now check to see if the two inventory objects could merge */
144	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
145
146	/* inventory ok - still need to check rest of this object to see
147	* if it is valid.
148	*/
149	}	297	{
		298	ob1->optimise ();
		299	ob2->optimise ();
150		300
151	/* If the objects have been identified, set the BEEN_APPLIED flag.	301	if (ob1->self || ob2->self)
152	* This is to the comparison of the flags below will be OK. We
153	* just can't ignore the been applied or identified flags, as they
154	* are not equal - just if it has been identified, the been_applied
155	* flags lose any meaning.
156	*/
157	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
158	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
159
160	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
161	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
162
163
164	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
165	* being locked in inventory should prevent merging.
166	* 0x4 in flags3 is CLIENT_SENT
167	*/
168	if ((ob1->arch != ob2->arch) ||
169	(ob1->flags[0] != ob2->flags[0]) ||
170	(ob1->flags[1] != ob2->flags[1]) ||
171	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
172	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
173	(ob1->name != ob2->name) ||
174	(ob1->title != ob2->title) ||
175	(ob1->msg != ob2->msg) ||
176	(ob1->weight != ob2->weight) ||
177	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
178	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
179	(ob1->attacktype != ob2->attacktype) ||
180	(ob1->magic != ob2->magic) ||
181	(ob1->slaying != ob2->slaying) ||
182	(ob1->skill != ob2->skill) ||
183	(ob1->value != ob2->value) ||
184	(ob1->animation_id != ob2->animation_id) ||
185	(ob1->client_type != ob2->client_type) ||
186	(ob1->materialname != ob2->materialname) ||
187	(ob1->lore != ob2->lore) ||
188	(ob1->subtype != ob2->subtype) ||
189	(ob1->move_type != ob2->move_type) ||
190	(ob1->move_block != ob2->move_block) ||
191	(ob1->move_allow != ob2->move_allow) ||
192	(ob1->move_on != ob2->move_on) ||
193	(ob1->move_off != ob2->move_off) ||
194	(ob1->move_slow != ob2->move_slow) ||
195	(ob1->move_slow_penalty != ob2->move_slow_penalty)
196	)	302	{
		303	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		304	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		305
		306	if (k1 != k2)
197	return 0;	307	return 0;
198		308
199	/* Don't merge objects that are applied. With the new 'body' code,	309	if (k1 == 0)
200	* it is possible for most any character to have more than one of
201	* some items equipped, and we don't want those to merge.
202	*/
203	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))
204	return 0;
205
206	switch (ob1->type) {
207	case SCROLL:
208	if (ob1->level != ob2->level) return 0;
209	break;
210
211	}
212	if (ob1->key_values != NULL || ob2->key_values != NULL) {
213	/* At least one of these has key_values. */
214	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {
215	/* One has fields, but the other one doesn't. */
216	return 0;	310	return 1;
217	} else if (!compare_ob_value_lists(ob1, ob2)) {	311
		312	if (!cfperl_can_merge (ob1, ob2))
218	return 0;	313	return 0;
219	}	314	}
220	}	315	}
221		316
222	/* Everything passes, must be OK. */	317	/* Everything passes, must be OK. */
223	return 1;	318	return 1;
224	}	319	}
225		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 (object *op, sint32 weight)
		360	{
		361	return op->type == CONTAINER
		362	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		363	: weight;
		364	}
		365
226	/*	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	weight = weight_adjust (op, weight);
		376
		377	if (!weight)
		378	return;
		379
		380	op->carrying += weight;
		381
		382	if (object *pl = op->visible_to ())
		383	if (pl != op) // player is handled lazily
		384	esrv_update_item (UPD_WEIGHT, pl, op);
		385
		386	op = op->env;
		387	}
		388	}
		389
		390	/*
227	* sum_weight() is a recursive function which calculates the weight	391	* this is a recursive function which calculates the weight
228	* an object is carrying. It goes through in figures out how much	392	* an object is carrying. It goes through op and figures out how much
229	* containers are carrying, and sums it up.	393	* containers are carrying, and sums it up.
230	*/	394	*/
231	signed long sum_weight(object *op) {	395	void
232	signed long sum;	396	object::update_weight ()
233	object *inv;	397	{
234	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	398	sint32 sum = 0;
		399
		400	for (object *op = inv; op; op = op->below)
		401	{
235	if (inv->inv)	402	if (op->inv)
236	sum_weight(inv);	403	op->update_weight ();
237	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	404
		405	sum += op->total_weight ();
238	}	406	}
239	if (op->type == CONTAINER && op->stats.Str)	407
240	sum = (sum * (100 - op->stats.Str))/100;	408	sum = weight_adjust (this, sum);
241	if(op->carrying != sum)	409
		410	if (sum != carrying)
		411	{
242	op->carrying = sum;	412	carrying = sum;
243	return sum;
244	}
245		413
		414	if (object *pl = visible_to ())
		415	if (pl != this) // player is handled lazily
		416	esrv_update_item (UPD_WEIGHT, pl, this);
		417	}
		418	}
		419
246	/**	420	/*
247	* Return the outermost environment object for a given object.	421	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
248	*/	422	*/
249		423	char *
250	object *object_get_env_recursive (object *op) {
251	while (op->env != NULL)
252	op = op->env;
253	return op;
254	}
255
256	/*
257	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
258	* a better check. We basically keeping traversing up until we can't
259	* or find a player.
260	*/
261
262	object *is_player_inv (object *op) {
263	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
264	if (op->env==op)
265	op->env = NULL;
266	return op;
267	}
268
269	/*
270	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
271	* Some error messages.
272	* The result of the dump is stored in the static global errmsg array.
273	*/
274
275	void dump_object2(object *op) {
276	errmsg[0] = 0;
277	return;
278	//TODO//D#d#
279	#if 0
280	char *cp;
281	/* object *tmp;*/
282
283	if(op->arch!=NULL) {
284	strcat(errmsg,"arch ");
285	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
286	strcat(errmsg,"\n");
287	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
288	strcat(errmsg,cp);
289	#if 0
290	/* Don't dump player diffs - they are too long, mostly meaningless, and
291	* will overflow the buffer.
292	* Changed so that we don't dump inventory either. This may
293	* also overflow the buffer.
294	*/
295	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
296	strcat(errmsg,cp);
297	for (tmp=op->inv; tmp; tmp=tmp->below)
298	dump_object2(tmp);
299	#endif
300	strcat(errmsg,"end\n");
301	} else {
302	strcat(errmsg,"Object ");
303	if (op->name==NULL) strcat(errmsg, "(null)");
304	else strcat(errmsg,op->name);
305	strcat(errmsg,"\n");
306	#if 0
307	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
308	strcat(errmsg,cp);
309	for (tmp=op->inv; tmp; tmp=tmp->below)
310	dump_object2(tmp);
311	#endif
312	strcat(errmsg,"end\n");
313	}
314	#endif
315	}
316
317	/*
318	* Dumps an object. Returns output in the static global errmsg array.
319	*/
320
321	void dump_object(object *op) {	424	dump_object (object *op)
322	if(op==NULL) {	425	{
323	strcpy(errmsg,"[NULL pointer]");	426	if (!op)
324	return;	427	return strdup ("[NULLOBJ]");
325	}
326	errmsg[0]='\0';
327	dump_object2(op);
328	}
329		428
330	void dump_all_objects(void) {	429	object_freezer freezer;
331	object *op;	430	op->write (freezer);
332	for(op=objects;op!=NULL;op=op->next) {	431	return freezer.as_string ();
333	dump_object(op);
334	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
335	}
336	}	432	}
337		433
338	/*	434	/*
339	* get_nearest_part(multi-object, object 2) returns the part of the	435	* get_nearest_part(multi-object, object 2) returns the part of the
340	* multi-object 1 which is closest to the second object.	436	* multi-object 1 which is closest to the second object.
341	* If it's not a multi-object, it is returned.	437	* If it's not a multi-object, it is returned.
342	*/	438	*/
343		439	object *
344	object *get_nearest_part(object *op, const object *pl) {	440	get_nearest_part (object *op, const object *pl)
		441	{
345	object *tmp,*closest;	442	object *tmp, *closest;
346	int last_dist,i;	443	int last_dist, i;
		444
347	if(op->more==NULL)	445	if (!op->more)
348	return op;	446	return op;
		447
349	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	448	for (last_dist = distance (op, pl), closest = op, tmp = op->more;
		449	tmp;
		450	tmp = tmp->more)
350	if((i=distance(tmp,pl))<last_dist)	451	if ((i = distance (tmp, pl)) < last_dist)
351	closest=tmp,last_dist=i;	452	closest = tmp, last_dist = i;
		453
352	return closest;	454	return closest;
353	}	455	}
354		456
355	/*	457	/*
356	* Returns the object which has the count-variable equal to the argument.	458	* Returns the object which has the count-variable equal to the argument.
		459	* VERRRY slow.
357	*/	460	*/
358		461	object *
359	object *find_object(tag_t i) {	462	find_object (tag_t i)
360	object *op;	463	{
361	for(op=objects;op!=NULL;op=op->next)	464	for_all_objects (op)
362	if(op->count==i)	465	if (op->count == i)
363	break;
364	return op;	466	return op;
		467
		468	return 0;
365	}	469	}
366		470
367	/*	471	/*
368	* Returns the first object which has a name equal to the argument.	472	* Returns the first object which has a name equal to the argument.
369	* Used only by the patch command, but not all that useful.	473	* Used only by the patch command, but not all that useful.
370	* Enables features like "patch <name-of-other-player> food 999"	474	* Enables features like "patch <name-of-other-player> food 999"
371	*/	475	*/
372		476	object *
373	object *find_object_name(const char *str) {	477	find_object_name (const char *str)
374	const char *name = shstr::find (str);	478	{
		479	shstr_cmp str_ (str);
375	object *op;	480	object *op;
376	for(op=objects;op!=NULL;op=op->next)	481
		482	for_all_objects (op)
377	if(&op->name == name)	483	if (op->name == str_)
378	break;	484	break;
379		485
380	return op;	486	return op;
381	}
382
383	void free_all_object_data ()
384	{
385	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
386	}
387
388	/*
389	* Returns the object which this object marks as being the owner.
390	* A id-scheme is used to avoid pointing to objects which have been
391	* freed and are now reused. If this is detected, the owner is
392	* set to NULL, and NULL is returned.
393	* Changed 2004-02-12 - if the player is setting at the play again
394	* prompt, he is removed, and we don't want to treat him as an owner of
395	* anything, so check removed flag. I don't expect that this should break
396	* anything - once an object is removed, it is basically dead anyways.
397	*/
398
399	object *get_owner(object *op) {
400	if(op->owner==NULL)
401	return NULL;
402
403	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
404	op->owner->count==op->ownercount)
405	return op->owner;
406
407	op->owner=NULL;
408	op->ownercount=0;
409	return NULL;
410	}
411
412	void clear_owner(object *op)
413	{
414	if (!op) return;
415
416	if (op->owner && op->ownercount == op->owner->count)
417	op->owner->refcount--;
418
419	op->owner = NULL;
420	op->ownercount = 0;
421	}	487	}
422		488
423	/*	489	/*
424	* Sets the owner and sets the skill and exp pointers to owner's current	490	* Sets the owner and sets the skill and exp pointers to owner's current
425	* skill and experience objects.	491	* skill and experience objects.
		492	* ACTUALLY NO! investigate! TODO
426	*/	493	*/
427	void set_owner (object *op, object *owner)	494	void
		495	object::set_owner (object *owner)
428	{	496	{
429	if(owner==NULL||op==NULL)	497	// allow objects which own objects
		498	if (owner)
		499	while (owner->owner)
		500	owner = owner->owner;
		501
		502	if (flag [FLAG_FREED])
		503	{
		504	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
430	return;	505	return;
		506	}
431		507
432	/* next line added to allow objects which own objects */
433	/* Add a check for ownercounts in here, as I got into an endless loop
434	* with the fireball owning a poison cloud which then owned the
435	* fireball. I believe that was caused by one of the objects getting
436	* freed and then another object replacing it. Since the ownercounts
437	* didn't match, this check is valid and I believe that cause is valid.
438	*/
439	while (owner->owner && owner!=owner->owner &&
440	owner->ownercount==owner->owner->count) owner=owner->owner;
441
442	/* IF the owner still has an owner, we did not resolve to a final owner.
443	* so lets not add to that.
444	*/
445	if (owner->owner) return;
446
447	op->owner=owner;	508	this->owner = owner;
448
449	op->ownercount=owner->count;
450	owner->refcount++;
451
452	}	509	}
453		510
454	/* Set the owner to clone's current owner and set the skill and experience	511	int
455	* objects to clone's objects (typically those objects that where the owner's	512	object::slottype () const
456	* current skill and experience objects at the time when clone's owner was
457	* set - not the owner's current skill and experience objects).
458	*
459	* Use this function if player created an object (e.g. fire bullet, swarm
460	* spell), and this object creates further objects whose kills should be
461	* accounted for the player's original skill, even if player has changed
462	* skills meanwhile.
463	*/
464	void copy_owner (object *op, object *clone)
465	{	513	{
466	object *owner = get_owner (clone);	514	if (type == SKILL)
467	if (owner == NULL) {	515	{
468	/* players don't have owners - they own themselves. Update	516	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
469	* as appropriate.	517	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		518	}
		519	else
		520	{
		521	if (slot [body_combat].info) return slot_combat;
		522	if (slot [body_range ].info) return slot_ranged;
		523	}
		524
		525	return slot_none;
		526	}
		527
		528	bool
		529	object::change_weapon (object *ob)
		530	{
		531	if (current_weapon == ob)
		532	return true;
		533
		534	if (chosen_skill)
		535	chosen_skill->flag [FLAG_APPLIED] = false;
		536
		537	current_weapon = ob;
		538	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		539
		540	if (chosen_skill)
		541	chosen_skill->flag [FLAG_APPLIED] = true;
		542
		543	update_stats ();
		544
		545	if (ob)
		546	{
		547	// now check wether any body locations became invalid, in which case
		548	// we cannot apply the weapon at the moment.
		549	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		550	if (slot[i].used < 0)
470	*/	551	{
471	if (clone->type == PLAYER) owner=clone;	552	current_weapon = chosen_skill = 0;
472	else return;	553	update_stats ();
		554
		555	new_draw_info_format (NDI_UNIQUE, 0, this,
		556	"You try to balance all your items at once, "
		557	"but the %s is just too much for your body. "
		558	"[You need to unapply some items first.]", &ob->name);
		559	return false;
		560	}
		561
		562	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		563	}
		564	else
		565	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		566
		567	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
473	}	568	{
474	set_owner(op, owner);	569	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		570	&name, ob->debug_desc ());
		571	return false;
		572	}
475		573
		574	return true;
476	}	575	}
477		576
478	/* Zero the key_values on op, decrementing the shared-string	577	/* Zero the key_values on op, decrementing the shared-string
479	* refcounts and freeing the links.	578	* refcounts and freeing the links.
480	*/	579	*/
		580	static void
481	static void free_key_values(object * op)	581	free_key_values (object *op)
482	{	582	{
483	for (key_value *i = op->key_values; i != 0; )	583	for (key_value *i = op->key_values; i; )
484	{	584	{
485	key_value *next = i->next;	585	key_value *next = i->next;
486	delete i;	586	delete i;
		587
487	i = next;	588	i = next;
488	}	589	}
489		590
490	op->key_values = 0;	591	op->key_values = 0;
491	}	592	}
492		593
493	void object::clear ()
494	{
495	attachable_base::clear ();
496
497	free_key_values (this);
498
499	name = 0;
500	name_pl = 0;
501	title = 0;
502	race = 0;
503	slaying = 0;
504	skill = 0;
505	msg = 0;
506	lore = 0;
507	custom_name = 0;
508	materialname = 0;
509
510	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
511
512	SET_FLAG (this, FLAG_REMOVED);
513	}
514
515	void object::clone (object *destination)
516	{
517	*(object_copy *)destination = *(object_copy *)this;
518	*(object_pod *)destination = *(object_pod *)this;
519
520	if (self || cb)
521	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
522	}
523
524	/*	594	/*
525	* clear_object() frees everything allocated by an object, and also
526	* clears all variables and flags to default settings.
527	*/
528
529	void clear_object (object *op)
530	{
531	op->clear ();
532
533	op->contr = NULL;
534	op->below = NULL;
535	op->above = NULL;
536	op->inv = NULL;
537	op->container=NULL;
538	op->env=NULL;
539	op->more=NULL;
540	op->head=NULL;
541	op->map=NULL;
542	op->refcount=0;
543	op->active_next = NULL;
544	op->active_prev = NULL;
545	/* What is not cleared is next, prev, and count */
546
547	op->expmul = 1.0;
548	op->face = blank_face;
549	op->attacked_by_count = -1;
550
551	if (settings.casting_time)
552	op->casting_time = -1;
553	}
554
555	/*
556	* copy object first frees everything allocated by the second object,	595	* copy_to first frees everything allocated by the dst object,
557	* and then copies the contends of the first object into the second	596	* and then copies the contents of itself into the second
558	* object, allocating what needs to be allocated. Basically, any	597	* object, allocating what needs to be allocated. Basically, any
559	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	598	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
560	* if the first object is freed, the pointers in the new object	599	* if the first object is freed, the pointers in the new object
561	* will point at garbage.	600	* will point at garbage.
562	*/	601	*/
563		602	void
564	void copy_object (object *op2, object *op)	603	object::copy_to (object *dst)
565	{	604	{
566	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	605	dst->remove ();
567	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	606	*(object_copy *)dst = *this;
568		607	dst->flag [FLAG_REMOVED] = true;
569	op2->clone (op);
570
571	if (is_freed) SET_FLAG (op, FLAG_FREED);
572	if (is_removed) SET_FLAG (op, FLAG_REMOVED);
573
574	if (op2->speed < 0)
575	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
576		608
577	/* Copy over key_values, if any. */	609	/* Copy over key_values, if any. */
578	if (op2->key_values != NULL)	610	if (key_values)
579	{	611	{
580	key_value *tail = NULL;	612	key_value *tail = 0;
581	key_value *i;
582
583	op->key_values = NULL;	613	dst->key_values = 0;
584		614
585	for (i = op2->key_values; i != NULL; i = i->next)	615	for (key_value *i = key_values; i; i = i->next)
586	{	616	{
587	key_value *new_link = new key_value;	617	key_value *new_link = new key_value;
588		618
589	new_link->next = NULL;	619	new_link->next = 0;
590	new_link->key = i->key;	620	new_link->key = i->key;
591	new_link->value = i->value;	621	new_link->value = i->value;
592		622
593	/* Try and be clever here, too. */	623	/* Try and be clever here, too. */
594	if (op->key_values == NULL)	624	if (!dst->key_values)
595	{	625	{
596	op->key_values = new_link;	626	dst->key_values = new_link;
597	tail = new_link;	627	tail = new_link;
598	}	628	}
599	else	629	else
600	{	630	{
601	tail->next = new_link;	631	tail->next = new_link;
602	tail = new_link;	632	tail = new_link;
603	}	633	}
604	}	634	}
605	}	635	}
606		636
607	update_ob_speed (op);	637	if (speed < 0)
608	}	638	dst->speed_left -= rndm ();
609		639
610	/*	640	dst->set_speed (dst->speed);
611	* get_object() grabs an object from the list of unused objects, makes	641	}
612	* sure it is initialised, and returns it.	642
613	* If there are no free objects, expand_objects() is called to get more.	643	void
		644	object::instantiate ()
		645	{
		646	if (!uuid.seq) // HACK
		647	uuid = UUID::gen ();
		648
		649	speed_left = -0.1f;
		650	/* copy the body_info to the body_used - this is only really
		651	* need for monsters, but doesn't hurt to do it for everything.
		652	* by doing so, when a monster is created, it has good starting
		653	* values for the body_used info, so when items are created
		654	* for it, they can be properly equipped.
614	*/	655	*/
		656	for (int i = NUM_BODY_LOCATIONS; i--; )
		657	slot[i].used = slot[i].info;
615		658
616	object *get_object ()	659	attachable::instantiate ();
617	{	660	}
618	object *op = new object;
619		661
620	op->count = ++ob_count;	662	object *
621		663	object::clone ()
622	op->active_next = 0;	664	{
623	op->active_prev = 0;	665	object *neu = create ();
624		666	copy_to (neu);
625	op->next = objects;	667	neu->map = map; // not copied by copy_to
626	op->prev = 0;
627
628	if (objects)
629	objects->prev = op;
630
631	objects = op;
632
633	SET_FLAG (op, FLAG_REMOVED);
634
635	return op;	668	return neu;
636	}	669	}
637		670
638	/*	671	/*
639	* If an object with the IS_TURNABLE() flag needs to be turned due	672	* If an object with the IS_TURNABLE() flag needs to be turned due
640	* to the closest player being on the other side, this function can	673	* to the closest player being on the other side, this function can
641	* be called to update the face variable, _and_ how it looks on the map.	674	* be called to update the face variable, _and_ how it looks on the map.
642	*/	675	*/
643		676	void
644	void update_turn_face(object *op) {	677	update_turn_face (object *op)
		678	{
645	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	679	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
646	return;	680	return;
		681
647	SET_ANIMATION(op, op->direction);	682	SET_ANIMATION (op, op->direction);
648	update_object(op,UP_OBJ_FACE);	683	update_object (op, UP_OBJ_FACE);
649	}	684	}
650		685
651	/*	686	/*
652	* Updates the speed of an object. If the speed changes from 0 to another	687	* Updates the speed of an object. If the speed changes from 0 to another
653	* value, or vice versa, then add/remove the object from the active list.	688	* value, or vice versa, then add/remove the object from the active list.
654	* This function needs to be called whenever the speed of an object changes.	689	* This function needs to be called whenever the speed of an object changes.
655	*/	690	*/
656		691	void
657	void update_ob_speed(object *op) {	692	object::set_speed (float speed)
658	extern int arch_init;	693	{
659		694	if (flag [FLAG_FREED] && speed)
660	/* No reason putting the archetypes objects on the speed list,	695	{
661	* since they never really need to be updated.
662	*/
663
664	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
665	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	696	LOG (llevError, "Object %s is freed but has speed.\n", &name);
666	#ifdef MANY_CORES
667	abort();
668	#else
669	op->speed = 0;	697	speed = 0;
670	#endif
671	}	698	}
672	if (arch_init) {
673	return;
674	}
675	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
676	/* If already on active list, don't do anything */
677	if (op->active_next || op->active_prev || op==active_objects)
678	return;
679		699
680	/* process_events() expects us to insert the object at the beginning	700	this->speed = speed;
681	* of the list. */	701
682	op->active_next = active_objects;	702	if (has_active_speed ())
683	if (op->active_next!=NULL)	703	activate ();
684	op->active_next->active_prev = op;
685	active_objects = op;
686	}
687	else {	704	else
688	/* If not on the active list, nothing needs to be done */	705	deactivate ();
689	if (!op->active_next && !op->active_prev && op!=active_objects)
690	return;
691
692	if (op->active_prev==NULL) {
693	active_objects = op->active_next;
694	if (op->active_next!=NULL)
695	op->active_next->active_prev = NULL;
696	}
697	else {
698	op->active_prev->active_next = op->active_next;
699	if (op->active_next)
700	op->active_next->active_prev = op->active_prev;
701	}
702	op->active_next = NULL;
703	op->active_prev = NULL;
704	}
705	}	706	}
706		707
707	/* This function removes object 'op' from the list of active
708	* objects.
709	* This should only be used for style maps or other such
710	* reference maps where you don't want an object that isn't
711	* in play chewing up cpu time getting processed.
712	* The reverse of this is to call update_ob_speed, which
713	* will do the right thing based on the speed of the object.
714	*/
715	void remove_from_active_list(object *op)
716	{
717	/* If not on the active list, nothing needs to be done */
718	if (!op->active_next && !op->active_prev && op!=active_objects)
719	return;
720
721	if (op->active_prev==NULL) {
722	active_objects = op->active_next;
723	if (op->active_next!=NULL)
724	op->active_next->active_prev = NULL;
725	}
726	else {
727	op->active_prev->active_next = op->active_next;
728	if (op->active_next)
729	op->active_next->active_prev = op->active_prev;
730	}
731	op->active_next = NULL;
732	op->active_prev = NULL;
733	}
734
735	/*	708	/*
736	* update_object() updates the array which represents the map.	709	* update_object() updates the the map.
737	* It takes into account invisible objects (and represent squares covered	710	* It takes into account invisible objects (and represent squares covered
738	* by invisible objects by whatever is below them (unless it's another	711	* by invisible objects by whatever is below them (unless it's another
739	* invisible object, etc...)	712	* invisible object, etc...)
740	* If the object being updated is beneath a player, the look-window	713	* If the object being updated is beneath a player, the look-window
741	* of that player is updated (this might be a suboptimal way of	714	* of that player is updated (this might be a suboptimal way of
742	* updating that window, though, since update_object() is called _often_)	715	* updating that window, though, since update_object() is called _often_)
743	*	716	*
744	* action is a hint of what the caller believes need to be done.	717	* action is a hint of what the caller believes need to be done.
745	* For example, if the only thing that has changed is the face (due to
746	* an animation), we don't need to call update_position until that actually
747	* comes into view of a player. OTOH, many other things, like addition/removal
748	* of walls or living creatures may need us to update the flags now.
749	* current action are:	718	* current action are:
750	* UP_OBJ_INSERT: op was inserted	719	* UP_OBJ_INSERT: op was inserted
751	* UP_OBJ_REMOVE: op was removed	720	* UP_OBJ_REMOVE: op was removed
752	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	721	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
753	* as that is easier than trying to look at what may have changed.	722	* as that is easier than trying to look at what may have changed.
754	* UP_OBJ_FACE: only the objects face has changed.	723	* UP_OBJ_FACE: only the objects face has changed.
755	*/	724	*/
756		725	void
757	void update_object(object *op, int action) {	726	update_object (object *op, int action)
758	int update_now=0, flags;	727	{
759	MoveType move_on, move_off, move_block, move_slow;	728	if (!op)
760		729	{
761	if (op == NULL) {
762	/* this should never happen */	730	/* this should never happen */
763	LOG(llevDebug,"update_object() called for NULL object.\n");	731	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
764	return;	732	return;
765	}
766		733	}
767	if(op->env!=NULL) {	734
		735	if (!op->is_on_map ())
		736	{
768	/* Animation is currently handled by client, so nothing	737	/* Animation is currently handled by client, so nothing
769	* to do in this case.	738	* to do in this case.
770	*/	739	*/
771	return;	740	return;
772	}
773
774	/* If the map is saving, don't do anything as everything is
775	* going to get freed anyways.
776	*/
777	if (!op->map || op->map->in_memory == MAP_SAVING) return;
778		741	}
		742
779	/* make sure the object is within map boundaries */	743	/* make sure the object is within map boundaries */
780	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	744	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
781	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	745	{
782	LOG(llevError,"update_object() called for object out of map!\n");	746	LOG (llevError, "update_object() called for object out of map!\n");
783	#ifdef MANY_CORES	747	#ifdef MANY_CORES
784	abort();	748	abort ();
785	#endif	749	#endif
786	return;	750	return;
787	}
788		751	}
789	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
790	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
791	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
792	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
793	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
794	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
795		752
		753	mapspace &m = op->ms ();
		754
		755	if (!(m.flags_ & P_UPTODATE))
		756	/* nop */;
796	if (action == UP_OBJ_INSERT) {	757	else if (action == UP_OBJ_INSERT)
		758	{
		759	// this is likely overkill, TODO: revisit (schmorp)
797	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	760	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
798	update_now=1;
799
800	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	761	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
801	update_now=1;	762	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
802		763	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		764	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
803	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	765	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
804	update_now=1;	766	|| (m.move_on | op->move_on ) != m.move_on
805
806	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
807	update_now=1;
808
809	if ((move_on | op->move_on) != move_on) update_now=1;
810	if ((move_off | op->move_off) != move_off) update_now=1;	767	|| (m.move_off | op->move_off ) != m.move_off
		768	|| (m.move_slow | op->move_slow) != m.move_slow
811	/* This isn't perfect, but I don't expect a lot of objects to	769	/* This isn't perfect, but I don't expect a lot of objects to
812	* to have move_allow right now.	770	* to have move_allow right now.
813	*/	771	*/
814	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	772	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
815	update_now=1;	773	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
816	if ((move_slow | op->move_slow) != move_slow) update_now=1;	774	m.flags_ = 0;
817	}	775	}
818	/* if the object is being removed, we can't make intelligent	776	/* if the object is being removed, we can't make intelligent
819	* decisions, because remove_ob can't really pass the object	777	* decisions, because remove_ob can't really pass the object
820	* that is being removed.	778	* that is being removed.
821	*/	779	*/
822	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	780	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
823	update_now=1;	781	m.flags_ = 0;
824	} else if (action == UP_OBJ_FACE) {	782	else if (action == UP_OBJ_FACE)
825	/* Nothing to do for that case */	783	/* Nothing to do for that case */ ;
826	}
827	else {	784	else
828	LOG(llevError,"update_object called with invalid action: %d\n", action);	785	LOG (llevError, "update_object called with invalid action: %d\n", action);
829	}
830		786
831	if (update_now) {
832	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
833	update_position(op->map, op->x, op->y);
834	}
835
836	if(op->more!=NULL)	787	if (op->more)
837	update_object(op->more, action);	788	update_object (op->more, action);
838	}	789	}
839		790
		791	object::object ()
		792	{
		793	SET_FLAG (this, FLAG_REMOVED);
840		794
841	/*	795	expmul = 1.0;
842	* free_object() frees everything allocated by an object, removes	796	face = blank_face;
843	* it from the list of used objects, and puts it on the list of	797	}
844	* free objects. The IS_FREED() flag is set in the object.	798
845	* The object must have been removed by remove_ob() first for	799	object::~object ()
846	* this function to succeed.	800	{
		801	unlink ();
		802
		803	free_key_values (this);
		804	}
		805
		806	static int object_count;
		807
		808	void object::link ()
		809	{
		810	assert (!index);//D
		811	uuid = UUID::gen ();
		812	count = ++object_count;
		813
		814	refcnt_inc ();
		815	objects.insert (this);
		816	}
		817
		818	void object::unlink ()
		819	{
		820	if (!index)
		821	return;
		822
		823	objects.erase (this);
		824	refcnt_dec ();
		825	}
		826
		827	void
		828	object::activate ()
		829	{
		830	/* If already on active list, don't do anything */
		831	if (active)
		832	return;
		833
		834	if (has_active_speed ())
		835	actives.insert (this);
		836	}
		837
		838	void
		839	object::activate_recursive ()
		840	{
		841	activate ();
		842
		843	for (object *op = inv; op; op = op->below)
		844	op->activate_recursive ();
		845	}
		846
		847	/* This function removes object 'op' from the list of active
		848	* objects.
		849	* This should only be used for style maps or other such
		850	* reference maps where you don't want an object that isn't
		851	* in play chewing up cpu time getting processed.
		852	* The reverse of this is to call update_ob_speed, which
		853	* will do the right thing based on the speed of the object.
847	*	854	*/
848	* If free_inventory is set, free inventory as well. Else drop items in
849	* inventory to the ground.
850	*/
851
852	void	855	void
853	free_object (object * ob)	856	object::deactivate ()
854	{	857	{
855	free_object2 (ob, 0);	858	/* If not on the active list, nothing needs to be done */
856	}	859	if (!active)
		860	return;
857		861
858	void	862	actives.erase (this);
859	free_object2 (object * ob, int free_inventory)	863	}
860	{
861	object *tmp, *op;
862		864
863	if (!QUERY_FLAG (ob, FLAG_REMOVED))	865	void
864	{	866	object::deactivate_recursive ()
865	LOG (llevDebug, "Free object called with non removed object\n");	867	{
866	dump_object (ob);	868	for (object *op = inv; op; op = op->below)
867	#ifdef MANY_CORES	869	op->deactivate_recursive ();
868	abort ();	870
869	#endif	871	deactivate ();
		872	}
		873
		874	void
		875	object::set_flag_inv (int flag, int value)
		876	{
		877	for (object *op = inv; op; op = op->below)
870	}	878	{
871		879	op->flag [flag] = value;
872	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	880	op->set_flag_inv (flag, value);
873	{	881	}
874	LOG (llevMonster, "Warning: tried to free friendly object.\n");	882	}
		883
		884	/*
		885	* Remove and free all objects in the inventory of the given object.
		886	* object.c ?
		887	*/
		888	void
		889	object::destroy_inv (bool drop_to_ground)
		890	{
		891	// need to check first, because the checks below might segfault
		892	// as we might be on an invalid mapspace and crossfire code
		893	// is too buggy to ensure that the inventory is empty.
		894	// corollary: if you create arrows etc. with stuff in its inventory,
		895	// cf will crash below with off-map x and y
		896	if (!inv)
		897	return;
		898
		899	/* Only if the space blocks everything do we not process -
		900	* if some form of movement is allowed, let objects
		901	* drop on that space.
		902	*/
		903	if (!drop_to_ground
		904	|| !map
		905	|| map->in_memory != MAP_ACTIVE
		906	|| map->nodrop
		907	|| ms ().move_block == MOVE_ALL)
		908	{
		909	while (inv)
		910	{
		911	inv->destroy_inv (false);
		912	inv->destroy ();
		913	}
		914	}
		915	else
		916	{ /* Put objects in inventory onto this space */
		917	while (inv)
		918	{
		919	object *op = inv;
		920
		921	if (op->flag [FLAG_STARTEQUIP]
		922	|| op->flag [FLAG_NO_DROP]
		923	|| op->type == RUNE
		924	|| op->type == TRAP
		925	|| op->flag [FLAG_IS_A_TEMPLATE]
		926	|| op->flag [FLAG_DESTROY_ON_DEATH])
		927	op->destroy (true);
		928	else
		929	map->insert (op, x, y);
		930	}
		931	}
		932	}
		933
		934	object *object::create ()
		935	{
		936	object *op = new object;
		937	op->link ();
		938	return op;
		939	}
		940
		941	static struct freed_map : maptile
		942	{
		943	freed_map ()
		944	{
		945	path = "<freed objects map>";
		946	name = "/internal/freed_objects_map";
		947	width = 3;
		948	height = 3;
		949	nodrop = 1;
		950
		951	alloc ();
		952	in_memory = MAP_ACTIVE;
		953	}
		954	} freed_map; // freed objects are moved here to avoid crashes
		955
		956	void
		957	object::do_destroy ()
		958	{
		959	if (flag [FLAG_IS_LINKED])
		960	remove_button_link (this);
		961
		962	if (flag [FLAG_FRIENDLY])
875	remove_friendly_object (ob);	963	remove_friendly_object (this);
		964
		965	remove ();
		966
		967	attachable::do_destroy ();
		968
		969	deactivate ();
		970	unlink ();
		971
		972	flag [FLAG_FREED] = 1;
		973
		974	// hack to ensure that freed objects still have a valid map
		975	map = &freed_map;
		976	x = 1;
		977	y = 1;
		978
		979	if (more)
876	}	980	{
877		981	more->destroy ();
878	if (QUERY_FLAG (ob, FLAG_FREED))	982	more = 0;
879	{	983	}
880	dump_object (ob);	984
881	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	985	head = 0;
		986
		987	// clear those pointers that likely might cause circular references
		988	owner = 0;
		989	enemy = 0;
		990	attacked_by = 0;
		991	current_weapon = 0;
		992	}
		993
		994	void
		995	object::destroy (bool destroy_inventory)
		996	{
		997	if (destroyed ())
		998	return;
		999
		1000	if (!is_head () && !head->destroyed ())
		1001	{
		1002	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1003	head->destroy (destroy_inventory);
882	return;	1004	return;
883	}	1005	}
884		1006
885	if (ob->more != NULL)	1007	destroy_inv (!destroy_inventory);
886	{
887	free_object2 (ob->more, free_inventory);
888	ob->more = NULL;
889	}
890		1008
891	if (ob->inv)	1009	if (is_head ())
892	{	1010	if (sound_destroy)
893	/* Only if the space blocks everything do we not process -	1011	play_sound (sound_destroy);
894	* if some form of movemnt is allowed, let objects	1012	else if (flag [FLAG_MONSTER])
895	* drop on that space.	1013	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
896	*/
897	if (free_inventory || ob->map == NULL
898	|| ob->map->in_memory != MAP_IN_MEMORY
899	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
900	{
901	op = ob->inv;
902		1014
903	while (op != NULL)	1015	attachable::destroy ();
904	{
905	tmp = op->below;
906	remove_ob (op);
907	free_object2 (op, free_inventory);
908	op = tmp;
909	}
910	}
911	else
912	{ /* Put objects in inventory onto this space */
913	op = ob->inv;
914
915	while (op != NULL)
916	{
917	tmp = op->below;
918	remove_ob (op);
919
920	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
921	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
922	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
923	free_object (op);
924	else
925	{
926	op->x = ob->x;
927	op->y = ob->y;
928	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
929	}
930
931	op = tmp;
932	}
933	}
934	}
935
936	/* Remove object from the active list */
937	ob->speed = 0;
938	update_ob_speed (ob);
939
940	SET_FLAG (ob, FLAG_FREED);
941	ob->count = 0;
942
943	/* Remove this object from the list of used objects */
944	if (ob->prev == NULL)
945	{
946	objects = ob->next;
947
948	if (objects != NULL)
949	objects->prev = NULL;
950	}
951	else
952	{
953	ob->prev->next = ob->next;
954
955	if (ob->next != NULL)
956	ob->next->prev = ob->prev;
957	}
958
959	free_key_values (ob);
960
961	/* Now link it with the free_objects list: */
962	ob->prev = 0;
963	ob->next = 0;
964
965	delete ob;
966	}	1016	}
967		1017
968	/*	1018	/* op->remove ():
969	* sub_weight() recursively (outwards) subtracts a number from the
970	* weight of an object (and what is carried by it's environment(s)).
971	*/
972
973	void sub_weight (object *op, signed long weight) {
974	while (op != NULL) {
975	if (op->type == CONTAINER) {
976	weight=(signed long)(weight*(100-op->stats.Str)/100);
977	}
978	op->carrying-=weight;
979	op = op->env;
980	}
981	}
982
983	/* remove_ob(op):
984	* This function removes the object op from the linked list of objects	1019	* This function removes the object op from the linked list of objects
985	* which it is currently tied to. When this function is done, the	1020	* which it is currently tied to. When this function is done, the
986	* object will have no environment. If the object previously had an	1021	* object will have no environment. If the object previously had an
987	* environment, the x and y coordinates will be updated to	1022	* environment, the x and y coordinates will be updated to
988	* the previous environment.	1023	* the previous environment.
989	* Beware: This function is called from the editor as well!
990	*/	1024	*/
991		1025	void
992	void remove_ob(object *op) {	1026	object::do_remove ()
		1027	{
993	object *tmp,*last=NULL;	1028	object *tmp, *last = 0;
994	object *otmp;	1029	object *otmp;
995	tag_t tag;
996	int check_walk_off;
997	mapstruct *m;
998	sint16 x,y;
999
1000		1030
1001	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1031	if (flag [FLAG_REMOVED])
1002	dump_object(op);	1032	return;
1003	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1004		1033
1005	/* Changed it to always dump core in this case. As has been learned	1034	INVOKE_OBJECT (REMOVE, this);
1006	* in the past, trying to recover from errors almost always
1007	* make things worse, and this is a real error here - something
1008	* that should not happen.
1009	* Yes, if this was a mission critical app, trying to do something
1010	* to recover may make sense, but that is because failure of the app
1011	* may have other disastrous problems. Cf runs out of a script
1012	* so is easily enough restarted without any real problems.
1013	* MSW 2001-07-01
1014	*/
1015	abort();
1016	}
1017	if(op->more!=NULL)
1018	remove_ob(op->more);
1019		1035
1020	SET_FLAG(op, FLAG_REMOVED);	1036	flag [FLAG_REMOVED] = true;
1021		1037
		1038	if (more)
		1039	more->remove ();
		1040
1022	/*	1041	/*
1023	* In this case, the object to be removed is in someones	1042	* In this case, the object to be removed is in someones
1024	* inventory.	1043	* inventory.
		1044	*/
		1045	if (env)
		1046	{
		1047	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
		1048	if (object *pl = visible_to ())
		1049	esrv_del_item (pl->contr, count);
		1050	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
		1051
		1052	adjust_weight (env, -total_weight ());
		1053
		1054	*(above ? &above->below : &env->inv) = below;
		1055
		1056	if (below)
		1057	below->above = above;
		1058
		1059	/* we set up values so that it could be inserted into
		1060	* the map, but we don't actually do that - it is up
		1061	* to the caller to decide what we want to do.
1025	*/	1062	*/
1026	if(op->env!=NULL) {	1063	map = env->map;
1027	if(op->nrof)	1064	x = env->x;
1028	sub_weight(op->env, op->weight*op->nrof);	1065	y = env->y;
1029	else	1066	above = 0;
1030	sub_weight(op->env, op->weight+op->carrying);	1067	below = 0;
		1068	env = 0;
1031		1069
1032	/* NO_FIX_PLAYER is set when a great many changes are being	1070	/* NO_FIX_PLAYER is set when a great many changes are being
1033	* made to players inventory. If set, avoiding the call	1071	* made to players inventory. If set, avoiding the call
1034	* to save cpu time.	1072	* to save cpu time.
		1073	*/
		1074	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
		1075	otmp->update_stats ();
		1076	}
		1077	else if (map)
		1078	{
		1079	map->dirty = true;
		1080	mapspace &ms = this->ms ();
		1081
		1082	if (object *pl = ms.player ())
		1083	{
		1084	if (type == PLAYER) // this == pl(!)
		1085	{
		1086	// leaving a spot always closes any open container on the ground
		1087	if (container && !container->env)
		1088	// this causes spurious floorbox updates, but it ensures
		1089	// that the CLOSE event is being sent.
		1090	close_container ();
		1091
		1092	--map->players;
		1093	map->touch ();
		1094	}
		1095	else if (pl->container == this)
		1096	{
		1097	// removing a container should close it
		1098	close_container ();
		1099	}
		1100
		1101	esrv_del_item (pl->contr, count);
		1102	}
		1103
		1104	/* link the object above us */
		1105	if (above)
		1106	above->below = below;
		1107	else
		1108	ms.top = below; /* we were top, set new top */
		1109
		1110	/* Relink the object below us, if there is one */
		1111	if (below)
		1112	below->above = above;
		1113	else
		1114	{
		1115	/* Nothing below, which means we need to relink map object for this space
		1116	* use translated coordinates in case some oddness with map tiling is
		1117	* evident
1035	*/	1118	*/
1036	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1119	if (GET_MAP_OB (map, x, y) != this)
1037	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1120	LOG (llevError, "remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom? %s\n", debug_desc ());
1038	fix_player(otmp);
1039		1121
1040	if(op->above!=NULL)	1122	ms.bot = above; /* goes on above it. */
1041	op->above->below=op->below;
1042	else
1043	op->env->inv=op->below;
1044
1045	if(op->below!=NULL)
1046	op->below->above=op->above;
1047
1048	/* we set up values so that it could be inserted into
1049	* the map, but we don't actually do that - it is up
1050	* to the caller to decide what we want to do.
1051	*/	1123	}
1052	op->x=op->env->x,op->y=op->env->y;	1124
1053	op->map=op->env->map;	1125	above = 0;
1054	op->above=NULL,op->below=NULL;	1126	below = 0;
1055	op->env=NULL;	1127
		1128	if (map->in_memory == MAP_SAVING)
1056	return;	1129	return;
1057	}
1058		1130
1059	/* If we get here, we are removing it from a map */	1131	int check_walk_off = !flag [FLAG_NO_APPLY];
1060	if (op->map == NULL) return;
1061		1132
1062	x = op->x;	1133	if (object *pl = ms.player ())
1063	y = op->y;
1064	m = get_map_from_coord(op->map, &x, &y);
1065
1066	if (!m) {
1067	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1068	op->map->path, op->x, op->y);
1069	/* in old days, we used to set x and y to 0 and continue.
1070	* it seems if we get into this case, something is probablye
1071	* screwed up and should be fixed.
1072	*/
1073	abort();
1074	}
1075	if (op->map != m) {
1076	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1077	op->map->path, m->path, op->x, op->y, x, y);
1078	}
1079
1080	/* Re did the following section of code - it looks like it had
1081	* lots of logic for things we no longer care about
1082	*/
1083
1084	/* link the object above us */
1085	if (op->above)
1086	op->above->below=op->below;
1087	else
1088	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1089
1090	/* Relink the object below us, if there is one */
1091	if(op->below) {
1092	op->below->above=op->above;
1093	} else {
1094	/* Nothing below, which means we need to relink map object for this space
1095	* use translated coordinates in case some oddness with map tiling is
1096	* evident
1097	*/
1098	if(GET_MAP_OB(m,x,y)!=op) {
1099	dump_object(op);
1100	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);
1101	dump_object(GET_MAP_OB(m,x,y));
1102	LOG(llevError,"%s\n",errmsg);
1103	}	1134	{
1104	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1135	if (pl->container == this)
1105	}
1106	op->above=NULL;
1107	op->below=NULL;
1108
1109	if (op->map->in_memory == MAP_SAVING)
1110	return;
1111
1112	tag = op->count;
1113	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1114	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1115	/* No point updating the players look faces if he is the object
1116	* being removed.
1117	*/
1118
1119	if(tmp->type==PLAYER && tmp!=op) {
1120	/* If a container that the player is currently using somehow gets	1136	/* If a container that the player is currently using somehow gets
1121	* removed (most likely destroyed), update the player view	1137	* removed (most likely destroyed), update the player view
1122	* appropriately.	1138	* appropriately.
1123	*/	1139	*/
1124	if (tmp->container==op) {	1140	pl->close_container ();
1125	CLEAR_FLAG(op, FLAG_APPLIED);	1141
1126	tmp->container=NULL;	1142	//TODO: the floorbox prev/next might need updating
		1143	//esrv_del_item (pl->contr, count);
		1144	//TODO: update floorbox to preserve ordering
		1145	if (pl->contr->ns)
		1146	pl->contr->ns->floorbox_update ();
		1147	}
		1148
		1149	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1150	{
		1151	/* No point updating the players look faces if he is the object
		1152	* being removed.
		1153	*/
		1154
		1155	/* See if object moving off should effect something */
		1156	if (check_walk_off
		1157	&& ((move_type & tmp->move_off)
		1158	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1159	{
		1160	move_apply (tmp, this, 0);
		1161
		1162	if (destroyed ())
		1163	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1127	}	1164	}
1128	tmp->contr->socket.update_look=1;	1165
		1166	last = tmp;
1129	}	1167	}
1130	/* See if player moving off should effect something */
1131	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1132	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1133		1168
1134	move_apply(tmp, op, NULL);
1135	if (was_destroyed (op, tag)) {
1136	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1137	"leaving object\n", &tmp->name, &tmp->arch->name);
1138	}
1139	}
1140
1141	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1142
1143	if(tmp->above == tmp)
1144	tmp->above = NULL;
1145	last=tmp;
1146	}
1147	/* last == NULL of there are no objects on this space */	1169	/* last == NULL if there are no objects on this space */
1148	if (last==NULL) {	1170	//TODO: this makes little sense, why only update the topmost object?
1149	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1171	if (!last)
1150	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1172	map->at (x, y).flags_ = 0;
1151	* those out anyways, and if there are any flags set right now, they won't
1152	* be correct anyways.
1153	*/
1154	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1155	update_position(op->map, op->x, op->y);
1156	}
1157	else	1173	else
1158	update_object(last, UP_OBJ_REMOVE);	1174	update_object (last, UP_OBJ_REMOVE);
1159		1175
1160	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1176	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1161	update_all_los(op->map, op->x, op->y);	1177	update_all_los (map, x, y);
1162		1178	}
1163	}	1179	}
1164		1180
1165	/*	1181	/*
1166	* merge_ob(op,top):	1182	* merge_ob(op,top):
1167	*	1183	*
1168	* This function goes through all objects below and including top, and	1184	* This function goes through all objects below and including top, and
1169	* merges op to the first matching object.	1185	* merges op to the first matching object.
1170	* If top is NULL, it is calculated.	1186	* If top is NULL, it is calculated.
1171	* Returns pointer to object if it succeded in the merge, otherwise NULL	1187	* Returns pointer to object if it succeded in the merge, otherwise NULL
1172	*/	1188	*/
1173		1189	object *
1174	object *merge_ob(object *op, object *top) {	1190	merge_ob (object *op, object *top)
		1191	{
1175	if(!op->nrof)	1192	if (!op->nrof)
1176	return 0;	1193	return 0;
1177	if(top==NULL)	1194
		1195	if (!top)
1178	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1196	for (top = op; top && top->above; top = top->above)
		1197	;
		1198
1179	for(;top!=NULL;top=top->below) {	1199	for (; top; top = top->below)
1180	if(top==op)	1200	if (object::can_merge (op, top))
1181	continue;
1182	if (CAN_MERGE(op,top))
1183	{	1201	{
1184	top->nrof+=op->nrof;	1202	top->nrof += op->nrof;
1185	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1203
1186	op->weight = 0; /* Don't want any adjustements now */	1204	if (object *pl = top->visible_to ())
1187	remove_ob(op);	1205	esrv_update_item (UPD_NROF, pl, top);
1188	free_object(op);	1206
		1207	op->weight = 0; // cancel the addition above
		1208	op->carrying = 0; // must be 0 already
		1209
		1210	op->destroy (1);
		1211
1189	return top;	1212	return top;
1190	}	1213	}
1191	}	1214
1192	return NULL;	1215	return 0;
1193	}	1216	}
1194		1217
		1218	void
		1219	object::expand_tail ()
		1220	{
		1221	if (more)
		1222	return;
		1223
		1224	object *prev = this;
		1225
		1226	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1227	{
		1228	object *op = arch_to_object (at);
		1229
		1230	op->name = name;
		1231	op->name_pl = name_pl;
		1232	op->title = title;
		1233
		1234	op->head = this;
		1235	prev->more = op;
		1236
		1237	prev = op;
		1238	}
		1239	}
		1240
1195	/*	1241	/*
1196	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1242	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1197	* job preparing multi-part monsters	1243	* job preparing multi-part monsters.
1198	*/	1244	*/
		1245	object *
1199	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1246	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1200	object* tmp;	1247	{
1201	if (op->head)	1248	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1202	op=op->head;	1249	{
1203	for (tmp=op;tmp;tmp=tmp->more){
1204	tmp->x=x+tmp->arch->clone.x;	1250	tmp->x = x + tmp->arch->x;
1205	tmp->y=y+tmp->arch->clone.y;	1251	tmp->y = y + tmp->arch->y;
1206	}	1252	}
		1253
1207	return insert_ob_in_map (op, m, originator, flag);	1254	return insert_ob_in_map (op, m, originator, flag);
1208	}	1255	}
1209		1256
1210	/*	1257	/*
1211	* insert_ob_in_map (op, map, originator, flag):	1258	* insert_ob_in_map (op, map, originator, flag):
1212	* This function inserts the object in the two-way linked list	1259	* This function inserts the object in the two-way linked list
…		…
1225	* Return value:	1272	* Return value:
1226	* new object if 'op' was merged with other object	1273	* new object if 'op' was merged with other object
1227	* NULL if 'op' was destroyed	1274	* NULL if 'op' was destroyed
1228	* just 'op' otherwise	1275	* just 'op' otherwise
1229	*/	1276	*/
1230		1277	object *
1231	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1278	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1232	{	1279	{
1233	object *tmp, *top, *floor=NULL;	1280	assert (!op->flag [FLAG_FREED]);
1234	sint16 x,y;
1235		1281
1236	if (QUERY_FLAG (op, FLAG_FREED)) {	1282	op->remove ();
1237	LOG (llevError, "Trying to insert freed object!\n");	1283
1238	return NULL;	1284	/* Ideally, the caller figures this out. However, it complicates a lot
		1285	* of areas of callers (eg, anything that uses find_free_spot would now
		1286	* need extra work
		1287	*/
		1288	if (!xy_normalise (m, op->x, op->y))
1239	}	1289	{
1240	if(m==NULL) {	1290	op->destroy (1);
1241	dump_object(op);
1242	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1243	return op;	1291	return 0;
1244	}	1292	}
1245	if(out_of_map(m,op->x,op->y)) {	1293
1246	dump_object(op);	1294	if (object *more = op->more)
1247	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1295	if (!insert_ob_in_map (more, m, originator, flag))
1248	#ifdef MANY_CORES
1249	/* Better to catch this here, as otherwise the next use of this object
1250	* is likely to cause a crash. Better to find out where it is getting
1251	* improperly inserted.
1252	*/
1253	abort();
1254	#endif
1255	return op;	1296	return 0;
1256	}
1257	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1258	dump_object(op);
1259	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1260	return op;
1261	}
1262	if(op->more!=NULL) {
1263	/* The part may be on a different map. */
1264		1297
1265	object *more = op->more;	1298	CLEAR_FLAG (op, FLAG_REMOVED);
1266		1299
1267	/* We really need the caller to normalize coordinates - if	1300	op->map = m;
1268	* we set the map, that doesn't work if the location is within	1301	mapspace &ms = op->ms ();
1269	* a map and this is straddling an edge. So only if coordinate	1302
1270	* is clear wrong do we normalize it.	1303	/* this has to be done after we translate the coordinates.
		1304	*/
		1305	if (op->nrof && !(flag & INS_NO_MERGE))
		1306	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1307	if (object::can_merge (op, tmp))
1271	*/	1308	{
1272	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1309	// TODO: we atcually want to update tmp, not op,
1273	more->map = get_map_from_coord(m, &more->x, &more->y);	1310	// but some caller surely breaks when we return tmp
1274	} else if (!more->map) {	1311	// from here :/
1275	/* For backwards compatibility - when not dealing with tiled maps,	1312	op->nrof += tmp->nrof;
1276	* more->map should always point to the parent.	1313	tmp->destroy (1);
1277	*/
1278	more->map = m;
1279	}	1314	}
1280		1315
1281	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1316	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1282	if ( ! op->head)	1317	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1283	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1318
1284	return NULL;	1319	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1320	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1321
		1322	if (flag & INS_BELOW_ORIGINATOR)
		1323	{
		1324	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1325	{
		1326	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1327	abort ();
1285	}	1328	}
		1329
		1330	op->above = originator;
		1331	op->below = originator->below;
		1332
		1333	if (op->below)
		1334	op->below->above = op;
		1335	else
		1336	ms.bot = op;
		1337
		1338	/* since *below* originator, no need to update top */
		1339	originator->below = op;
		1340	}
		1341	else
1286	}	1342	{
1287	CLEAR_FLAG(op,FLAG_REMOVED);	1343	object *top, *floor = NULL;
1288		1344
1289	/* Ideally, the caller figures this out. However, it complicates a lot	1345	top = ms.bot;
1290	* of areas of callers (eg, anything that uses find_free_spot would now
1291	* need extra work
1292	*/
1293	op->map=get_map_from_coord(m, &op->x, &op->y);
1294	x = op->x;
1295	y = op->y;
1296		1346
1297	/* this has to be done after we translate the coordinates.	1347	/* If there are other objects, then */
1298	*/	1348	if (top)
1299	if(op->nrof && !(flag & INS_NO_MERGE)) {	1349	{
1300	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1350	object *last = 0;
1301	if (CAN_MERGE(op,tmp)) {	1351
1302	op->nrof+=tmp->nrof;	1352	/*
1303	remove_ob(tmp);	1353	* If there are multiple objects on this space, we do some trickier handling.
1304	free_object(tmp);	1354	* We've already dealt with merging if appropriate.
		1355	* Generally, we want to put the new object on top. But if
		1356	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1357	* floor, we want to insert above that and no further.
		1358	* Also, if there are spell objects on this space, we stop processing
		1359	* once we get to them. This reduces the need to traverse over all of
		1360	* them when adding another one - this saves quite a bit of cpu time
		1361	* when lots of spells are cast in one area. Currently, it is presumed
		1362	* that flying non pickable objects are spell objects.
		1363	*/
		1364	for (top = ms.bot; top; top = top->above)
		1365	{
		1366	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1367	floor = top;
		1368
		1369	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1370	{
		1371	/* We insert above top, so we want this object below this */
		1372	top = top->below;
		1373	break;
		1374	}
		1375
		1376	last = top;
1305	}	1377	}
1306	}
1307		1378
1308	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1379	/* Don't want top to be NULL, so set it to the last valid object */
1309	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1380	top = last;
1310	if (!QUERY_FLAG(op, FLAG_ALIVE))
1311	CLEAR_FLAG(op, FLAG_NO_STEAL);
1312		1381
1313	if (flag & INS_BELOW_ORIGINATOR) {	1382	/* We let update_position deal with figuring out what the space
1314	if (originator->map != op->map || originator->x != op->x ||	1383	* looks like instead of lots of conditions here.
1315	originator->y != op->y) {	1384	* makes things faster, and effectively the same result.
1316	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1385	*/
1317	abort();	1386
		1387	/* Have object 'fall below' other objects that block view.
		1388	* Unless those objects are exits.
		1389	* If INS_ON_TOP is used, don't do this processing
		1390	* Need to find the object that in fact blocks view, otherwise
		1391	* stacking is a bit odd.
		1392	*/
		1393	if (!(flag & INS_ON_TOP)
		1394	&& ms.flags () & P_BLOCKSVIEW
		1395	&& (op->face && !faces [op->face].visibility))
		1396	{
		1397	for (last = top; last != floor; last = last->below)
		1398	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1399	break;
		1400
		1401	/* Check to see if we found the object that blocks view,
		1402	* and make sure we have a below pointer for it so that
		1403	* we can get inserted below this one, which requires we
		1404	* set top to the object below us.
		1405	*/
		1406	if (last && last->below && last != floor)
		1407	top = last->below;
		1408	}
		1409	} /* If objects on this space */
		1410
		1411	if (flag & INS_ABOVE_FLOOR_ONLY)
		1412	top = floor;
		1413
		1414	/* Top is the object that our object (op) is going to get inserted above.
		1415	*/
		1416
		1417	/* First object on this space */
		1418	if (!top)
		1419	{
		1420	op->above = ms.bot;
		1421
		1422	if (op->above)
		1423	op->above->below = op;
		1424
		1425	op->below = 0;
		1426	ms.bot = op;
1318	}	1427	}
1319	op->above = originator;
1320	op->below = originator->below;
1321	if (op->below) op->below->above = op;
1322	else SET_MAP_OB(op->map, op->x, op->y, op);
1323	/* since *below* originator, no need to update top */
1324	originator->below = op;
1325	} else {	1428	else
1326	/* If there are other objects, then */
1327	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1328	object *last=NULL;
1329	/*
1330	* If there are multiple objects on this space, we do some trickier handling.
1331	* We've already dealt with merging if appropriate.
1332	* Generally, we want to put the new object on top. But if
1333	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1334	* floor, we want to insert above that and no further.
1335	* Also, if there are spell objects on this space, we stop processing
1336	* once we get to them. This reduces the need to traverse over all of
1337	* them when adding another one - this saves quite a bit of cpu time
1338	* when lots of spells are cast in one area. Currently, it is presumed
1339	* that flying non pickable objects are spell objects.
1340	*/
1341
1342	while (top != NULL) {
1343	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1344	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1345	if (QUERY_FLAG(top, FLAG_NO_PICK)
1346	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1347	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1348	{
1349	/* We insert above top, so we want this object below this */
1350	top=top->below;
1351	break;
1352	}
1353	last = top;
1354	top = top->above;
1355	}
1356	/* Don't want top to be NULL, so set it to the last valid object */
1357	top = last;
1358
1359	/* We let update_position deal with figuring out what the space
1360	* looks like instead of lots of conditions here.
1361	* makes things faster, and effectively the same result.
1362	*/
1363
1364	/* Have object 'fall below' other objects that block view.
1365	* Unless those objects are exits, type 66
1366	* If INS_ON_TOP is used, don't do this processing
1367	* Need to find the object that in fact blocks view, otherwise
1368	* stacking is a bit odd.
1369	*/
1370	if (!(flag & INS_ON_TOP) &&
1371	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1372	(op->face && !op->face->visibility)) {
1373	for (last=top; last != floor; last=last->below)
1374	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1375	/* Check to see if we found the object that blocks view,
1376	* and make sure we have a below pointer for it so that
1377	* we can get inserted below this one, which requires we
1378	* set top to the object below us.
1379	*/
1380	if (last && last->below && last != floor) top=last->below;
1381	}
1382	} /* If objects on this space */
1383	if (flag & INS_MAP_LOAD)
1384	top = GET_MAP_TOP(op->map,op->x,op->y);
1385	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1386
1387	/* Top is the object that our object (op) is going to get inserted above.
1388	*/
1389
1390	/* First object on this space */
1391	if (!top) {
1392	op->above = GET_MAP_OB(op->map, op->x, op->y);
1393	if (op->above) op->above->below = op;
1394	op->below = NULL;
1395	SET_MAP_OB(op->map, op->x, op->y, op);
1396	} else { /* get inserted into the stack above top */	1429	{ /* get inserted into the stack above top */
1397	op->above = top->above;	1430	op->above = top->above;
		1431
		1432	if (op->above)
1398	if (op->above) op->above->below = op;	1433	op->above->below = op;
		1434
1399	op->below = top;	1435	op->below = top;
1400	top->above = op;	1436	top->above = op;
1401	}	1437	}
		1438
1402	if (op->above==NULL)	1439	if (!op->above)
1403	SET_MAP_TOP(op->map,op->x, op->y, op);	1440	ms.top = op;
1404	} /* else not INS_BELOW_ORIGINATOR */	1441	} /* else not INS_BELOW_ORIGINATOR */
1405		1442
1406	if(op->type==PLAYER)	1443	if (op->type == PLAYER)
		1444	{
1407	op->contr->do_los=1;	1445	op->contr->do_los = 1;
		1446	++op->map->players;
		1447	op->map->touch ();
		1448	}
1408		1449
1409	/* If we have a floor, we know the player, if any, will be above	1450	op->map->dirty = true;
1410	* it, so save a few ticks and start from there.
1411	*/
1412	if (!(flag & INS_MAP_LOAD))
1413	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1414	if (tmp->type == PLAYER)
1415	tmp->contr->socket.update_look=1;
1416	}
1417		1451
		1452	if (object *pl = ms.player ())
		1453	//TODO: the floorbox prev/next might need updating
		1454	//esrv_send_item (pl, op);
		1455	//TODO: update floorbox to preserve ordering
		1456	if (pl->contr->ns)
		1457	pl->contr->ns->floorbox_update ();
		1458
1418	/* If this object glows, it may affect lighting conditions that are	1459	/* If this object glows, it may affect lighting conditions that are
1419	* visible to others on this map. But update_all_los is really	1460	* visible to others on this map. But update_all_los is really
1420	* an inefficient way to do this, as it means los for all players	1461	* an inefficient way to do this, as it means los for all players
1421	* on the map will get recalculated. The players could very well	1462	* on the map will get recalculated. The players could very well
1422	* be far away from this change and not affected in any way -	1463	* be far away from this change and not affected in any way -
1423	* this should get redone to only look for players within range,	1464	* this should get redone to only look for players within range,
1424	* or just updating the P_NEED_UPDATE for spaces within this area	1465	* or just updating the P_UPTODATE for spaces within this area
1425	* of effect may be sufficient.	1466	* of effect may be sufficient.
1426	*/	1467	*/
1427	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1468	if (op->map->darkness && (op->glow_radius != 0))
1428	update_all_los(op->map, op->x, op->y);	1469	update_all_los (op->map, op->x, op->y);
1429		1470
1430
1431	/* updates flags (blocked, alive, no magic, etc) for this map space */	1471	/* updates flags (blocked, alive, no magic, etc) for this map space */
1432	update_object(op,UP_OBJ_INSERT);	1472	update_object (op, UP_OBJ_INSERT);
1433		1473
		1474	INVOKE_OBJECT (INSERT, op);
1434		1475
1435	/* Don't know if moving this to the end will break anything. However,	1476	/* Don't know if moving this to the end will break anything. However,
1436	* we want to have update_look set above before calling this.	1477	* we want to have floorbox_update called before calling this.
1437	*	1478	*
1438	* check_move_on() must be after this because code called from	1479	* check_move_on() must be after this because code called from
1439	* check_move_on() depends on correct map flags (so functions like	1480	* check_move_on() depends on correct map flags (so functions like
1440	* blocked() and wall() work properly), and these flags are updated by	1481	* blocked() and wall() work properly), and these flags are updated by
1441	* update_object().	1482	* update_object().
1442	*/	1483	*/
1443		1484
1444	/* if this is not the head or flag has been passed, don't check walk on status */	1485	/* if this is not the head or flag has been passed, don't check walk on status */
1445
1446	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1486	if (!(flag & INS_NO_WALK_ON) && op->head_ () == op)
		1487	{
1447	if (check_move_on(op, originator))	1488	if (check_move_on (op, originator))
1448	return NULL;	1489	return 0;
1449		1490
1450	/* If we are a multi part object, lets work our way through the check	1491	/* If we are a multi part object, lets work our way through the check
1451	* walk on's.	1492	* walk on's.
1452	*/	1493	*/
1453	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1494	for (object *tmp = op->more; tmp; tmp = tmp->more)
1454	if (check_move_on (tmp, originator))	1495	if (check_move_on (tmp, originator))
1455	return NULL;	1496	return 0;
1456	}	1497	}
		1498
1457	return op;	1499	return op;
1458	}	1500	}
1459		1501
1460	/* this function inserts an object in the map, but if it	1502	/* this function inserts an object in the map, but if it
1461	* finds an object of its own type, it'll remove that one first.	1503	* finds an object of its own type, it'll remove that one first.
1462	* op is the object to insert it under: supplies x and the map.	1504	* op is the object to insert it under: supplies x and the map.
1463	*/	1505	*/
		1506	void
1464	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1507	replace_insert_ob_in_map (const char *arch_string, object *op)
1465	object *tmp;	1508	{
1466	object *tmp1;
1467
1468	/* first search for itself and remove any old instances */	1509	/* first search for itself and remove any old instances */
1469		1510
1470	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1511	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1471	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1512	if (!strcmp (tmp->arch->archname, arch_string)) /* same archetype */
1472	remove_ob(tmp);	1513	tmp->destroy (1);
1473	free_object(tmp);
1474	}
1475	}
1476		1514
1477	tmp1=arch_to_object(find_archetype(arch_string));	1515	object *tmp = arch_to_object (archetype::find (arch_string));
1478		1516
1479		1517	tmp->x = op->x;
1480	tmp1->x = op->x; tmp1->y = op->y;	1518	tmp->y = op->y;
		1519
1481	insert_ob_in_map(tmp1,op->map,op,0);	1520	insert_ob_in_map (tmp, op->map, op, 0);
1482	}
1483
1484	/*
1485	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1486	* is returned contains nr objects, and the remaining parts contains
1487	* the rest (or is removed and freed if that number is 0).
1488	* On failure, NULL is returned, and the reason put into the
1489	* global static errmsg array.
1490	*/
1491
1492	object *get_split_ob(object *orig_ob, uint32 nr) {
1493	object *newob;
1494	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1495
1496	if(orig_ob->nrof<nr) {
1497	sprintf(errmsg,"There are only %d %ss.",
1498	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1499	return NULL;
1500	}
1501	newob = object_create_clone(orig_ob);
1502	if((orig_ob->nrof-=nr)<1) {
1503	if ( ! is_removed)
1504	remove_ob(orig_ob);
1505	free_object2(orig_ob, 1);
1506	}
1507	else if ( ! is_removed) {
1508	if(orig_ob->env!=NULL)
1509	sub_weight (orig_ob->env,orig_ob->weight*nr);
1510	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1511	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1512	LOG(llevDebug,
1513	"Error, Tried to split object whose map is not in memory.\n");
1514	return NULL;
1515	}
1516	}
1517	newob->nrof=nr;
1518
1519	return newob;
1520	}	1521	}
1521		1522
		1523	object *
		1524	object::insert_at (object *where, object *originator, int flags)
		1525	{
		1526	if (where->env)
		1527	return where->env->insert (this);
		1528	else
		1529	return where->map->insert (this, where->x, where->y, originator, flags);
		1530	}
		1531
1522	/*	1532	/*
1523	* decrease_ob_nr(object, number) decreases a specified number from	1533	* decrease(object, number) decreases a specified number from
1524	* the amount of an object. If the amount reaches 0, the object	1534	* the amount of an object. If the amount reaches 0, the object
1525	* is subsequently removed and freed.	1535	* is subsequently removed and freed.
1526	*	1536	*
1527	* Return value: 'op' if something is left, NULL if the amount reached 0	1537	* Return value: 'op' if something is left, NULL if the amount reached 0
1528	*/	1538	*/
1529		1539	bool
1530	object *decrease_ob_nr (object *op, uint32 i)	1540	object::decrease (sint32 nr)
1531	{	1541	{
1532	object *tmp;	1542	if (!nr)
1533	player *pl;	1543	return true;
1534		1544
1535	if (i == 0) /* objects with op->nrof require this check */	1545	nr = min (nr, nrof);
		1546
		1547	nrof -= nr;
		1548
		1549	if (nrof)
		1550	{
		1551	adjust_weight (env, -weight * nr); // carrying == 0
		1552
		1553	if (object *pl = visible_to ())
		1554	esrv_update_item (UPD_NROF, pl, this);
		1555
		1556	return true;
		1557	}
		1558	else
		1559	{
		1560	destroy (1);
		1561	return false;
		1562	}
		1563	}
		1564
		1565	/*
		1566	* split(ob,nr) splits up ob into two parts. The part which
		1567	* is returned contains nr objects, and the remaining parts contains
		1568	* the rest (or is removed and returned if that number is 0).
		1569	* On failure, NULL is returned.
		1570	*/
		1571	object *
		1572	object::split (sint32 nr)
		1573	{
		1574	int have = number_of ();
		1575
		1576	if (have < nr)
		1577	return 0;
		1578	else if (have == nr)
		1579	{
		1580	remove ();
		1581	return this;
		1582	}
		1583	else
		1584	{
		1585	decrease (nr);
		1586
		1587	object *op = object_create_clone (this);
		1588	op->nrof = nr;
1536	return op;	1589	return op;
1537
1538	if (i > op->nrof)
1539	i = op->nrof;
1540
1541	if (QUERY_FLAG (op, FLAG_REMOVED))
1542	{	1590	}
1543	op->nrof -= i;	1591	}
		1592
		1593	object *
		1594	insert_ob_in_ob (object *op, object *where)
		1595	{
		1596	if (!where)
1544	}	1597	{
1545	else if (op->env != NULL)	1598	char *dump = dump_object (op);
1546	{	1599	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1547	/* is this object in the players inventory, or sub container	1600	free (dump);
1548	* therein?
1549	*/
1550	tmp = is_player_inv (op->env);
1551	/* nope. Is this a container the player has opened?
1552	* If so, set tmp to that player.
1553	* IMO, searching through all the players will mostly
1554	* likely be quicker than following op->env to the map,
1555	* and then searching the map for a player.
1556	*/
1557	if (!tmp) {
1558	for (pl=first_player; pl; pl=pl->next)
1559	if (pl->ob->container == op->env) break;
1560	if (pl) tmp=pl->ob;
1561	else tmp=NULL;
1562	}
1563
1564	if (i < op->nrof) {
1565	sub_weight (op->env, op->weight * i);
1566	op->nrof -= i;
1567	if (tmp) {
1568	esrv_send_item(tmp, op);
1569	}
1570	} else {
1571	remove_ob (op);
1572	op->nrof = 0;
1573	if (tmp) {
1574	esrv_del_item(tmp->contr, op->count);
1575	}
1576	}
1577	}
1578	else
1579	{
1580	object *above = op->above;
1581
1582	if (i < op->nrof) {
1583	op->nrof -= i;
1584	} else {
1585	remove_ob (op);
1586	op->nrof = 0;
1587	}
1588	/* Since we just removed op, op->above is null */
1589	for (tmp = above; tmp != NULL; tmp = tmp->above)
1590	if (tmp->type == PLAYER) {
1591	if (op->nrof)
1592	esrv_send_item(tmp, op);
1593	else
1594	esrv_del_item(tmp->contr, op->count);
1595	}
1596	}
1597
1598	if (op->nrof) {
1599	return op;	1601	return op;
1600	} else {	1602	}
1601	free_object (op);	1603
1602	return NULL;	1604	if (where->head_ () != where)
1603	}	1605	{
1604	}	1606	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1605		1607	where = where->head;
1606	/*
1607	* add_weight(object, weight) adds the specified weight to an object,
1608	* and also updates how much the environment(s) is/are carrying.
1609	*/
1610
1611	void add_weight (object *op, signed long weight) {
1612	while (op!=NULL) {
1613	if (op->type == CONTAINER) {
1614	weight=(signed long)(weight*(100-op->stats.Str)/100);
1615	}
1616	op->carrying+=weight;
1617	op=op->env;
1618	}	1608	}
1619	}
1620		1609
		1610	return where->insert (op);
		1611	}
		1612
1621	/*	1613	/*
1622	* insert_ob_in_ob(op,environment):	1614	* env->insert (op)
1623	* This function inserts the object op in the linked list	1615	* This function inserts the object op in the linked list
1624	* inside the object environment.	1616	* inside the object environment.
1625	*	1617	*
1626	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1627	* the inventory at the last position or next to other objects of the same
1628	* type.
1629	* Frank: Now sorted by type, archetype and magic!
1630	*
1631	* The function returns now pointer to inserted item, and return value can	1618	* The function returns now pointer to inserted item, and return value can
1632	* be != op, if items are merged. -Tero	1619	* be != op, if items are merged. -Tero
1633	*/	1620	*/
1634		1621	object *
1635	object *insert_ob_in_ob(object *op,object *where) {	1622	object::insert (object *op)
1636	object *tmp, *otmp;	1623	{
1637
1638	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1639	dump_object(op);
1640	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1641	return op;
1642	}
1643	if(where==NULL) {
1644	dump_object(op);
1645	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1646	return op;
1647	}
1648	if (where->head) {
1649	LOG(llevDebug,
1650	"Warning: Tried to insert object wrong part of multipart object.\n");
1651	where = where->head;
1652	}
1653	if (op->more) {	1624	if (op->more)
		1625	{
1654	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1626	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1655	&op->name, op->count);
1656	return op;	1627	return op;
1657	}	1628	}
1658	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1629
1659	CLEAR_FLAG(op, FLAG_REMOVED);	1630	op->remove ();
		1631
		1632	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1633
1660	if(op->nrof) {	1634	if (op->nrof)
1661	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1635	for (object *tmp = inv; tmp; tmp = tmp->below)
1662	if ( CAN_MERGE(tmp,op) ) {	1636	if (object::can_merge (tmp, op))
		1637	{
1663	/* return the original object and remove inserted object	1638	/* return the original object and remove inserted object
1664	(client needs the original object) */	1639	(client needs the original object) */
1665	tmp->nrof += op->nrof;	1640	tmp->nrof += op->nrof;
1666	/* Weight handling gets pretty funky. Since we are adding to	1641
1667	* tmp->nrof, we need to increase the weight.	1642	if (object *pl = tmp->visible_to ())
1668	*/	1643	esrv_update_item (UPD_NROF, pl, tmp);
1669	add_weight (where, op->weight*op->nrof);	1644
1670	SET_FLAG(op, FLAG_REMOVED);	1645	adjust_weight (this, op->total_weight ());
1671	free_object(op); /* free the inserted object */	1646
		1647	op->destroy (1);
1672	op = tmp;	1648	op = tmp;
1673	remove_ob (op); /* and fix old object's links */	1649	goto inserted;
1674	CLEAR_FLAG(op, FLAG_REMOVED);
1675	break;
1676	}	1650	}
1677		1651
1678	/* I assume combined objects have no inventory	1652	op->owner = 0; // it's his/hers now. period.
1679	* We add the weight - this object could have just been removed	1653	op->map = 0;
1680	* (if it was possible to merge). calling remove_ob will subtract	1654	op->x = 0;
1681	* the weight, so we need to add it in again, since we actually do	1655	op->y = 0;
1682	* the linking below
1683	*/
1684	add_weight (where, op->weight*op->nrof);
1685	} else
1686	add_weight (where, (op->weight+op->carrying));
1687		1656
1688	otmp=is_player_inv(where);
1689	if (otmp&&otmp->contr!=NULL) {
1690	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1691	fix_player(otmp);
1692	}
1693
1694	op->map=NULL;
1695	op->env=where;
1696	op->above=NULL;	1657	op->above = 0;
1697	op->below=NULL;	1658	op->below = inv;
1698	op->x=0,op->y=0;	1659	op->env = this;
1699		1660
		1661	if (inv)
		1662	inv->above = op;
		1663
		1664	inv = op;
		1665
		1666	op->flag [FLAG_REMOVED] = 0;
		1667
		1668	if (object *pl = op->visible_to ())
		1669	esrv_send_item (pl, op);
		1670
		1671	adjust_weight (this, op->total_weight ());
		1672
		1673	inserted:
1700	/* reset the light list and los of the players on the map */	1674	/* reset the light list and los of the players on the map */
1701	if((op->glow_radius!=0)&&where->map)	1675	if (op->glow_radius && map && map->darkness)
1702	{	1676	update_all_los (map, x, y);
1703	#ifdef DEBUG_LIGHTS
1704	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",
1705	op->name);
1706	#endif /* DEBUG_LIGHTS */
1707	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1708	}
1709		1677
1710	/* Client has no idea of ordering so lets not bother ordering it here.	1678	// if this is a player's inventory, update stats
1711	* It sure simplifies this function...	1679	if (type == PLAYER && !flag [FLAG_NO_FIX_PLAYER])
1712	*/	1680	update_stats ();
1713	if (where->inv==NULL)	1681
1714	where->inv=op;	1682	INVOKE_OBJECT (INSERT, this);
1715	else {	1683
1716	op->below = where->inv;
1717	op->below->above = op;
1718	where->inv = op;
1719	}
1720	return op;	1684	return op;
1721	}	1685	}
1722		1686
1723	/*	1687	/*
1724	* Checks if any objects has a move_type that matches objects	1688	* Checks if any objects has a move_type that matches objects
…		…
1738	*	1702	*
1739	* MSW 2001-07-08: Check all objects on space, not just those below	1703	* MSW 2001-07-08: Check all objects on space, not just those below
1740	* object being inserted. insert_ob_in_map may not put new objects	1704	* object being inserted. insert_ob_in_map may not put new objects
1741	* on top.	1705	* on top.
1742	*/	1706	*/
1743		1707	int
1744	int check_move_on (object *op, object *originator)	1708	check_move_on (object *op, object *originator)
1745	{	1709	{
1746	object *tmp;	1710	object *tmp;
1747	tag_t tag;
1748	mapstruct *m=op->map;	1711	maptile *m = op->map;
1749	int x=op->x, y=op->y;	1712	int x = op->x, y = op->y;
		1713
1750	MoveType move_on, move_slow, move_block;	1714	MoveType move_on, move_slow, move_block;
1751		1715
1752	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1716	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1753	return 0;	1717	return 0;
1754		1718
1755	tag = op->count;
1756
1757	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1719	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1758	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1720	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1759	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1721	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1760		1722
1761	/* if nothing on this space will slow op down or be applied,	1723	/* if nothing on this space will slow op down or be applied,
1762	* no need to do checking below. have to make sure move_type	1724	* no need to do checking below. have to make sure move_type
1763	* is set, as lots of objects don't have it set - we treat that	1725	* is set, as lots of objects don't have it set - we treat that
1764	* as walking.	1726	* as walking.
1765	*/	1727	*/
1766	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1728	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1767	return 0;	1729	return 0;
1768		1730
1769	/* This is basically inverse logic of that below - basically,	1731	/* This is basically inverse logic of that below - basically,
1770	* if the object can avoid the move on or slow move, they do so,	1732	* if the object can avoid the move on or slow move, they do so,
1771	* but can't do it if the alternate movement they are using is	1733	* but can't do it if the alternate movement they are using is
1772	* blocked. Logic on this seems confusing, but does seem correct.	1734	* blocked. Logic on this seems confusing, but does seem correct.
1773	*/	1735	*/
1774	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1736	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1775	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1737	return 0;
1776		1738
1777	/* The objects have to be checked from top to bottom.	1739	/* The objects have to be checked from top to bottom.
1778	* Hence, we first go to the top:	1740	* Hence, we first go to the top:
1779	*/	1741	*/
1780		1742
1781	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1743	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1782	tmp->above!=NULL; tmp=tmp->above) {	1744	{
1783	/* Trim the search when we find the first other spell effect	1745	/* Trim the search when we find the first other spell effect
1784	* this helps performance so that if a space has 50 spell objects,	1746	* this helps performance so that if a space has 50 spell objects,
1785	* we don't need to check all of them.	1747	* we don't need to check all of them.
1786	*/	1748	*/
1787	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1749	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1750	break;
		1751	}
		1752
		1753	for (; tmp; tmp = tmp->below)
1788	}	1754	{
1789	for(;tmp!=NULL; tmp=tmp->below) {	1755	if (tmp == op)
1790	if (tmp == op) continue; /* Can't apply yourself */	1756	continue; /* Can't apply yourself */
1791		1757
1792	/* Check to see if one of the movement types should be slowed down.	1758	/* Check to see if one of the movement types should be slowed down.
1793	* Second check makes sure that the movement types not being slowed	1759	* Second check makes sure that the movement types not being slowed
1794	* (~slow_move) is not blocked on this space - just because the	1760	* (~slow_move) is not blocked on this space - just because the
1795	* space doesn't slow down swimming (for example), if you can't actually	1761	* space doesn't slow down swimming (for example), if you can't actually
1796	* swim on that space, can't use it to avoid the penalty.	1762	* swim on that space, can't use it to avoid the penalty.
1797	*/	1763	*/
1798	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1764	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1765	{
1799	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1766	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1800	((op->move_type & tmp->move_slow) &&
1801	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1767	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1768	{
1802		1769
1803	float diff;	1770	float
1804
1805	diff = tmp->move_slow_penalty*FABS(op->speed);	1771	diff = tmp->move_slow_penalty * fabs (op->speed);
		1772
1806	if (op->type == PLAYER) {	1773	if (op->type == PLAYER)
1807	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1774	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1808	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1775	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1809	diff /= 4.0;	1776	diff /= 4.0;
1810	}	1777
1811	}
1812	op->speed_left -= diff;	1778	op->speed_left -= diff;
1813	}	1779	}
1814	}	1780	}
1815		1781
1816	/* Basically same logic as above, except now for actual apply. */	1782	/* Basically same logic as above, except now for actual apply. */
1817	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1783	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1818	((op->move_type & tmp->move_on) &&
1819	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1784	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1820		1785	{
1821	move_apply(tmp, op, originator);	1786	move_apply (tmp, op, originator);
		1787
1822	if (was_destroyed (op, tag))	1788	if (op->destroyed ())
1823	return 1;	1789	return 1;
1824		1790
1825	/* what the person/creature stepped onto has moved the object	1791	/* what the person/creature stepped onto has moved the object
1826	* someplace new. Don't process any further - if we did,	1792	* someplace new. Don't process any further - if we did,
1827	* have a feeling strange problems would result.	1793	* have a feeling strange problems would result.
1828	*/	1794	*/
1829	if (op->map != m || op->x != x || op->y != y) return 0;	1795	if (op->map != m || op->x != x || op->y != y)
		1796	return 0;
1830	}	1797	}
1831	}	1798	}
		1799
1832	return 0;	1800	return 0;
1833	}	1801	}
1834		1802
1835	/*	1803	/*
1836	* present_arch(arch, map, x, y) searches for any objects with	1804	* present_arch(arch, map, x, y) searches for any objects with
1837	* a matching archetype at the given map and coordinates.	1805	* a matching archetype at the given map and coordinates.
1838	* The first matching object is returned, or NULL if none.	1806	* The first matching object is returned, or NULL if none.
1839	*/	1807	*/
1840		1808	object *
1841	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1809	present_arch (const archetype *at, maptile *m, int x, int y)
1842	object *tmp;	1810	{
1843	if(m==NULL || out_of_map(m,x,y)) {	1811	if (!m || out_of_map (m, x, y))
		1812	{
1844	LOG(llevError,"Present_arch called outside map.\n");	1813	LOG (llevError, "Present_arch called outside map.\n");
1845	return NULL;	1814	return NULL;
1846	}	1815	}
1847	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1816
		1817	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1848	if(tmp->arch == at)	1818	if (tmp->arch == at)
1849	return tmp;	1819	return tmp;
		1820
1850	return NULL;	1821	return NULL;
1851	}	1822	}
1852		1823
1853	/*	1824	/*
1854	* present(type, map, x, y) searches for any objects with	1825	* present(type, map, x, y) searches for any objects with
1855	* a matching type variable at the given map and coordinates.	1826	* a matching type variable at the given map and coordinates.
1856	* The first matching object is returned, or NULL if none.	1827	* The first matching object is returned, or NULL if none.
1857	*/	1828	*/
1858		1829	object *
1859	object *present(unsigned char type,mapstruct *m, int x,int y) {	1830	present (unsigned char type, maptile *m, int x, int y)
1860	object *tmp;	1831	{
1861	if(out_of_map(m,x,y)) {	1832	if (out_of_map (m, x, y))
		1833	{
1862	LOG(llevError,"Present called outside map.\n");	1834	LOG (llevError, "Present called outside map.\n");
1863	return NULL;	1835	return NULL;
1864	}	1836	}
1865	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1837
		1838	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1866	if(tmp->type==type)	1839	if (tmp->type == type)
1867	return tmp;	1840	return tmp;
		1841
1868	return NULL;	1842	return NULL;
1869	}	1843	}
1870		1844
1871	/*	1845	/*
1872	* present_in_ob(type, object) searches for any objects with	1846	* present_in_ob(type, object) searches for any objects with
1873	* a matching type variable in the inventory of the given object.	1847	* a matching type variable in the inventory of the given object.
1874	* The first matching object is returned, or NULL if none.	1848	* The first matching object is returned, or NULL if none.
1875	*/	1849	*/
1876		1850	object *
1877	object *present_in_ob(unsigned char type, const object *op) {	1851	present_in_ob (unsigned char type, const object *op)
1878	object *tmp;	1852	{
1879	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1853	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1880	if(tmp->type==type)	1854	if (tmp->type == type)
1881	return tmp;	1855	return tmp;
		1856
1882	return NULL;	1857	return NULL;
1883	}	1858	}
1884		1859
1885	/*	1860	/*
1886	* present_in_ob (type, str, object) searches for any objects with	1861	* present_in_ob (type, str, object) searches for any objects with
…		…
1894	* str is the string to match against. Note that we match against	1869	* str is the string to match against. Note that we match against
1895	* the object name, not the archetype name. this is so that the	1870	* the object name, not the archetype name. this is so that the
1896	* spell code can use one object type (force), but change it's name	1871	* spell code can use one object type (force), but change it's name
1897	* to be unique.	1872	* to be unique.
1898	*/	1873	*/
1899		1874	object *
1900	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1875	present_in_ob_by_name (int type, const char *str, const object *op)
1901	object *tmp;	1876	{
1902
1903	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1877	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1904	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1878	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1905	return tmp;	1879	return tmp;
1906	}	1880
1907	return NULL;	1881	return 0;
1908	}	1882	}
1909		1883
1910	/*	1884	/*
1911	* present_arch_in_ob(archetype, object) searches for any objects with	1885	* present_arch_in_ob(archetype, object) searches for any objects with
1912	* a matching archetype in the inventory of the given object.	1886	* a matching archetype in the inventory of the given object.
1913	* The first matching object is returned, or NULL if none.	1887	* The first matching object is returned, or NULL if none.
1914	*/	1888	*/
1915		1889	object *
1916	object *present_arch_in_ob(const archetype *at, const object *op) {	1890	present_arch_in_ob (const archetype *at, const object *op)
1917	object *tmp;	1891	{
1918	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1892	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1919	if( tmp->arch == at)	1893	if (tmp->arch == at)
1920	return tmp;	1894	return tmp;
		1895
1921	return NULL;	1896	return NULL;
1922	}	1897	}
1923		1898
1924	/*	1899	/*
1925	* activate recursively a flag on an object inventory	1900	* activate recursively a flag on an object inventory
1926	*/	1901	*/
		1902	void
1927	void flag_inv(object*op, int flag){	1903	flag_inv (object *op, int flag)
1928	object *tmp;	1904	{
1929	if(op->inv)
1930	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1905	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1906	{
1931	SET_FLAG(tmp, flag);	1907	SET_FLAG (tmp, flag);
1932	flag_inv(tmp,flag);	1908	flag_inv (tmp, flag);
1933	}	1909	}
		1910	}
		1911
1934	}/*	1912	/*
1935	* desactivate recursively a flag on an object inventory	1913	* deactivate recursively a flag on an object inventory
1936	*/	1914	*/
		1915	void
1937	void unflag_inv(object*op, int flag){	1916	unflag_inv (object *op, int flag)
1938	object *tmp;	1917	{
1939	if(op->inv)
1940	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1918	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1919	{
1941	CLEAR_FLAG(tmp, flag);	1920	CLEAR_FLAG (tmp, flag);
1942	unflag_inv(tmp,flag);	1921	unflag_inv (tmp, flag);
1943	}	1922	}
1944	}
1945
1946	/*
1947	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1948	* all it's inventory (recursively).
1949	* If checksums are used, a player will get set_cheat called for
1950	* him/her-self and all object carried by a call to this function.
1951	*/
1952
1953	void set_cheat(object *op) {
1954	SET_FLAG(op, FLAG_WAS_WIZ);
1955	flag_inv(op, FLAG_WAS_WIZ);
1956	}	1923	}
1957		1924
1958	/*	1925	/*
1959	* find_free_spot(object, map, x, y, start, stop) will search for	1926	* find_free_spot(object, map, x, y, start, stop) will search for
1960	* a spot at the given map and coordinates which will be able to contain	1927	* a spot at the given map and coordinates which will be able to contain
…		…
1962	* to search (see the freearr_x/y[] definition).	1929	* to search (see the freearr_x/y[] definition).
1963	* It returns a random choice among the alternatives found.	1930	* It returns a random choice among the alternatives found.
1964	* start and stop are where to start relative to the free_arr array (1,9	1931	* start and stop are where to start relative to the free_arr array (1,9
1965	* does all 4 immediate directions). This returns the index into the	1932	* does all 4 immediate directions). This returns the index into the
1966	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1933	* array of the free spot, -1 if no spot available (dir 0 = x,y)
1967	* Note - this only checks to see if there is space for the head of the
1968	* object - if it is a multispace object, this should be called for all
1969	* pieces.
1970	* Note2: This function does correctly handle tiled maps, but does not	1934	* Note: This function does correctly handle tiled maps, but does not
1971	* inform the caller. However, insert_ob_in_map will update as	1935	* inform the caller. However, insert_ob_in_map will update as
1972	* necessary, so the caller shouldn't need to do any special work.	1936	* necessary, so the caller shouldn't need to do any special work.
1973	* Note - updated to take an object instead of archetype - this is necessary	1937	* Note - updated to take an object instead of archetype - this is necessary
1974	* because arch_blocked (now ob_blocked) needs to know the movement type	1938	* because arch_blocked (now ob_blocked) needs to know the movement type
1975	* to know if the space in question will block the object. We can't use	1939	* to know if the space in question will block the object. We can't use
1976	* the archetype because that isn't correct if the monster has been	1940	* the archetype because that isn't correct if the monster has been
1977	* customized, changed states, etc.	1941	* customized, changed states, etc.
1978	*/	1942	*/
1979		1943	int
1980	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1944	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1945	{
		1946	int altern[SIZEOFFREE];
1981	int i,index=0, flag;	1947	int index = 0, flag;
1982	static int altern[SIZEOFFREE];
1983		1948
1984	for(i=start;i<stop;i++) {	1949	for (int i = start; i < stop; i++)
1985	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1950	{
1986	if(!flag)	1951	mapxy pos (m, x, y); pos.move (i);
		1952
		1953	if (!pos.normalise ())
		1954	continue;
		1955
		1956	mapspace &ms = *pos;
		1957
		1958	if (ms.flags () & P_IS_ALIVE)
		1959	continue;
		1960
		1961	/* However, often
		1962	* ob doesn't have any move type (when used to place exits)
		1963	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		1964	*/
		1965	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		1966	{
1987	altern[index++]=i;	1967	altern [index++] = i;
		1968	continue;
		1969	}
1988		1970
1989	/* Basically, if we find a wall on a space, we cut down the search size.	1971	/* Basically, if we find a wall on a space, we cut down the search size.
1990	* In this way, we won't return spaces that are on another side of a wall.	1972	* In this way, we won't return spaces that are on another side of a wall.
1991	* This mostly work, but it cuts down the search size in all directions -	1973	* This mostly work, but it cuts down the search size in all directions -
1992	* if the space being examined only has a wall to the north and empty	1974	* if the space being examined only has a wall to the north and empty
1993	* spaces in all the other directions, this will reduce the search space	1975	* spaces in all the other directions, this will reduce the search space
1994	* to only the spaces immediately surrounding the target area, and	1976	* to only the spaces immediately surrounding the target area, and
1995	* won't look 2 spaces south of the target space.	1977	* won't look 2 spaces south of the target space.
1996	*/	1978	*/
1997	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1979	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		1980	{
1998	stop=maxfree[i];	1981	stop = maxfree[i];
1999	}	1982	continue;
2000	if(!index) return -1;	1983	}
2001	return altern[RANDOM()%index];
2002	}
2003		1984
		1985	/* Note it is intentional that we check ob - the movement type of the
		1986	* head of the object should correspond for the entire object.
		1987	*/
		1988	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		1989	continue;
		1990
		1991	if (ob->blocked (m, pos.x, pos.y))
		1992	continue;
		1993
		1994	altern [index++] = i;
		1995	}
		1996
		1997	if (!index)
		1998	return -1;
		1999
		2000	return altern [rndm (index)];
		2001	}
		2002
2004	/*	2003	/*
2005	* find_first_free_spot(archetype, mapstruct, x, y) works like	2004	* find_first_free_spot(archetype, maptile, x, y) works like
2006	* find_free_spot(), but it will search max number of squares.	2005	* find_free_spot(), but it will search max number of squares.
2007	* But it will return the first available spot, not a random choice.	2006	* But it will return the first available spot, not a random choice.
2008	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2007	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2009	*/	2008	*/
2010		2009	int
2011	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2010	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2012	int i;	2011	{
2013	for(i=0;i<SIZEOFFREE;i++) {	2012	for (int i = 0; i < SIZEOFFREE; i++)
2014	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2013	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2015	return i;	2014	return i;
2016	}	2015
2017	return -1;	2016	return -1;
2018	}	2017	}
2019		2018
2020	/*	2019	/*
2021	* The function permute(arr, begin, end) randomly reorders the array	2020	* The function permute(arr, begin, end) randomly reorders the array
2022	* arr[begin..end-1].	2021	* arr[begin..end-1].
		2022	* now uses a fisher-yates shuffle, old permute was broken
2023	*/	2023	*/
		2024	static void
2024	static void permute(int *arr, int begin, int end)	2025	permute (int *arr, int begin, int end)
2025	{	2026	{
2026	int i, j, tmp, len;	2027	arr += begin;
		2028	end -= begin;
2027		2029
2028	len = end-begin;	2030	while (--end)
2029	for(i = begin; i < end; i++)	2031	swap (arr [end], arr [rndm (end + 1)]);
2030	{
2031	j = begin+RANDOM()%len;
2032
2033	tmp = arr[i];
2034	arr[i] = arr[j];
2035	arr[j] = tmp;
2036	}
2037	}	2032	}
2038		2033
2039	/* new function to make monster searching more efficient, and effective!	2034	/* new function to make monster searching more efficient, and effective!
2040	* This basically returns a randomized array (in the passed pointer) of	2035	* This basically returns a randomized array (in the passed pointer) of
2041	* the spaces to find monsters. In this way, it won't always look for	2036	* the spaces to find monsters. In this way, it won't always look for
2042	* monsters to the north first. However, the size of the array passed	2037	* monsters to the north first. However, the size of the array passed
2043	* covers all the spaces, so within that size, all the spaces within	2038	* covers all the spaces, so within that size, all the spaces within
2044	* the 3x3 area will be searched, just not in a predictable order.	2039	* the 3x3 area will be searched, just not in a predictable order.
2045	*/	2040	*/
		2041	void
2046	void get_search_arr(int *search_arr)	2042	get_search_arr (int *search_arr)
2047	{	2043	{
2048	int i;	2044	int i;
2049		2045
2050	for(i = 0; i < SIZEOFFREE; i++)	2046	for (i = 0; i < SIZEOFFREE; i++)
2051	{
2052	search_arr[i] = i;	2047	search_arr[i] = i;
2053	}
2054		2048
2055	permute(search_arr, 1, SIZEOFFREE1+1);	2049	permute (search_arr, 1, SIZEOFFREE1 + 1);
2056	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2050	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2057	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2051	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2058	}	2052	}
2059		2053
2060	/*	2054	/*
2061	* find_dir(map, x, y, exclude) will search some close squares in the	2055	* find_dir(map, x, y, exclude) will search some close squares in the
2062	* given map at the given coordinates for live objects.	2056	* given map at the given coordinates for live objects.
…		…
2067	* Perhaps incorrectly, but I'm making the assumption that exclude	2061	* Perhaps incorrectly, but I'm making the assumption that exclude
2068	* is actually want is going to try and move there. We need this info	2062	* is actually want is going to try and move there. We need this info
2069	* because we have to know what movement the thing looking to move	2063	* because we have to know what movement the thing looking to move
2070	* there is capable of.	2064	* there is capable of.
2071	*/	2065	*/
2072		2066	int
2073	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2067	find_dir (maptile *m, int x, int y, object *exclude)
		2068	{
2074	int i,max=SIZEOFFREE, mflags;	2069	int i, max = SIZEOFFREE, mflags;
		2070
2075	sint16 nx, ny;	2071	sint16 nx, ny;
2076	object *tmp;	2072	object *tmp;
2077	mapstruct *mp;	2073	maptile *mp;
		2074
2078	MoveType blocked, move_type;	2075	MoveType blocked, move_type;
2079		2076
2080	if (exclude && exclude->head) {	2077	if (exclude && exclude->head_ () != exclude)
		2078	{
2081	exclude = exclude->head;	2079	exclude = exclude->head;
2082	move_type = exclude->move_type;	2080	move_type = exclude->move_type;
2083	} else {	2081	}
		2082	else
		2083	{
2084	/* If we don't have anything, presume it can use all movement types. */	2084	/* If we don't have anything, presume it can use all movement types. */
2085	move_type=MOVE_ALL;	2085	move_type = MOVE_ALL;
		2086	}
		2087
		2088	for (i = 1; i < max; i++)
2086	}	2089	{
2087
2088	for(i=1;i<max;i++) {
2089	mp = m;	2090	mp = m;
2090	nx = x + freearr_x[i];	2091	nx = x + freearr_x[i];
2091	ny = y + freearr_y[i];	2092	ny = y + freearr_y[i];
2092		2093
2093	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2094	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2095
2094	if (mflags & P_OUT_OF_MAP) {	2096	if (mflags & P_OUT_OF_MAP)
		2097	max = maxfree[i];
		2098	else
		2099	{
		2100	mapspace &ms = mp->at (nx, ny);
		2101
		2102	blocked = ms.move_block;
		2103
		2104	if ((move_type & blocked) == move_type)
2095	max = maxfree[i];	2105	max = maxfree[i];
2096	} else {
2097	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2098
2099	if ((move_type & blocked) == move_type) {
2100	max=maxfree[i];
2101	} else if (mflags & P_IS_ALIVE) {	2106	else if (mflags & P_IS_ALIVE)
2102	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2107	{
		2108	for (tmp = ms.bot; tmp; tmp = tmp->above)
2103	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2109	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2104	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2110	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2105	break;	2111	break;
2106	}	2112
2107	}
2108	if(tmp) {	2113	if (tmp)
2109	return freedir[i];	2114	return freedir[i];
2110	}
2111	}	2115	}
2112	}	2116	}
2113	}	2117	}
		2118
2114	return 0;	2119	return 0;
2115	}	2120	}
2116		2121
2117	/*	2122	/*
2118	* distance(object 1, object 2) will return the square of the	2123	* distance(object 1, object 2) will return the square of the
2119	* distance between the two given objects.	2124	* distance between the two given objects.
2120	*/	2125	*/
2121		2126	int
2122	int distance(const object *ob1, const object *ob2) {	2127	distance (const object *ob1, const object *ob2)
2123	int i;	2128	{
2124	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2129	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2125	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2126	return i;
2127	}	2130	}
2128		2131
2129	/*	2132	/*
2130	* find_dir_2(delta-x,delta-y) will return a direction in which	2133	* find_dir_2(delta-x,delta-y) will return a direction in which
2131	* an object which has subtracted the x and y coordinates of another	2134	* an object which has subtracted the x and y coordinates of another
2132	* object, needs to travel toward it.	2135	* object, needs to travel toward it.
2133	*/	2136	*/
2134		2137	int
2135	int find_dir_2(int x, int y) {	2138	find_dir_2 (int x, int y)
		2139	{
2136	int q;	2140	int q;
2137		2141
2138	if(y)	2142	if (y)
2139	q=x*100/y;	2143	q = x * 100 / y;
2140	else if (x)	2144	else if (x)
2141	q= -300*x;	2145	q = -300 * x;
2142	else	2146	else
2143	return 0;	2147	return 0;
2144		2148
2145	if(y>0) {	2149	if (y > 0)
		2150	{
2146	if(q < -242)	2151	if (q < -242)
2147	return 3 ;	2152	return 3;
2148	if (q < -41)	2153	if (q < -41)
2149	return 2 ;	2154	return 2;
2150	if (q < 41)	2155	if (q < 41)
2151	return 1 ;	2156	return 1;
2152	if (q < 242)	2157	if (q < 242)
2153	return 8 ;	2158	return 8;
2154	return 7 ;	2159	return 7;
2155	}	2160	}
2156		2161
2157	if (q < -242)	2162	if (q < -242)
2158	return 7 ;	2163	return 7;
2159	if (q < -41)	2164	if (q < -41)
2160	return 6 ;	2165	return 6;
2161	if (q < 41)	2166	if (q < 41)
2162	return 5 ;	2167	return 5;
2163	if (q < 242)	2168	if (q < 242)
2164	return 4 ;	2169	return 4;
2165		2170
2166	return 3 ;	2171	return 3;
2167	}
2168
2169	/*
2170	* absdir(int): Returns a number between 1 and 8, which represent
2171	* the "absolute" direction of a number (it actually takes care of
2172	* "overflow" in previous calculations of a direction).
2173	*/
2174
2175	int absdir(int d) {
2176	while(d<1) d+=8;
2177	while(d>8) d-=8;
2178	return d;
2179	}	2172	}
2180		2173
2181	/*	2174	/*
2182	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2175	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2183	* between two directions (which are expected to be absolute (see absdir())	2176	* between two directions (which are expected to be absolute (see absdir())
2184	*/	2177	*/
2185		2178	int
2186	int dirdiff(int dir1, int dir2) {	2179	dirdiff (int dir1, int dir2)
		2180	{
2187	int d;	2181	int d;
		2182
2188	d = abs(dir1 - dir2);	2183	d = abs (dir1 - dir2);
2189	if(d>4)	2184	if (d > 4)
2190	d = 8 - d;	2185	d = 8 - d;
		2186
2191	return d;	2187	return d;
2192	}	2188	}
2193		2189
2194	/* peterm:	2190	/* peterm:
2195	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2191	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2198	* This basically means that if direction is 15, then it could either go	2194	* This basically means that if direction is 15, then it could either go
2199	* direction 4, 14, or 16 to get back to where we are.	2195	* direction 4, 14, or 16 to get back to where we are.
2200	* Moved from spell_util.c to object.c with the other related direction	2196	* Moved from spell_util.c to object.c with the other related direction
2201	* functions.	2197	* functions.
2202	*/	2198	*/
2203
2204	int reduction_dir[SIZEOFFREE][3] = {	2199	int reduction_dir[SIZEOFFREE][3] = {
2205	{0,0,0}, /* 0 */	2200	{0, 0, 0}, /* 0 */
2206	{0,0,0}, /* 1 */	2201	{0, 0, 0}, /* 1 */
2207	{0,0,0}, /* 2 */	2202	{0, 0, 0}, /* 2 */
2208	{0,0,0}, /* 3 */	2203	{0, 0, 0}, /* 3 */
2209	{0,0,0}, /* 4 */	2204	{0, 0, 0}, /* 4 */
2210	{0,0,0}, /* 5 */	2205	{0, 0, 0}, /* 5 */
2211	{0,0,0}, /* 6 */	2206	{0, 0, 0}, /* 6 */
2212	{0,0,0}, /* 7 */	2207	{0, 0, 0}, /* 7 */
2213	{0,0,0}, /* 8 */	2208	{0, 0, 0}, /* 8 */
2214	{8,1,2}, /* 9 */	2209	{8, 1, 2}, /* 9 */
2215	{1,2,-1}, /* 10 */	2210	{1, 2, -1}, /* 10 */
2216	{2,10,12}, /* 11 */	2211	{2, 10, 12}, /* 11 */
2217	{2,3,-1}, /* 12 */	2212	{2, 3, -1}, /* 12 */
2218	{2,3,4}, /* 13 */	2213	{2, 3, 4}, /* 13 */
2219	{3,4,-1}, /* 14 */	2214	{3, 4, -1}, /* 14 */
2220	{4,14,16}, /* 15 */	2215	{4, 14, 16}, /* 15 */
2221	{5,4,-1}, /* 16 */	2216	{5, 4, -1}, /* 16 */
2222	{4,5,6}, /* 17 */	2217	{4, 5, 6}, /* 17 */
2223	{6,5,-1}, /* 18 */	2218	{6, 5, -1}, /* 18 */
2224	{6,20,18}, /* 19 */	2219	{6, 20, 18}, /* 19 */
2225	{7,6,-1}, /* 20 */	2220	{7, 6, -1}, /* 20 */
2226	{6,7,8}, /* 21 */	2221	{6, 7, 8}, /* 21 */
2227	{7,8,-1}, /* 22 */	2222	{7, 8, -1}, /* 22 */
2228	{8,22,24}, /* 23 */	2223	{8, 22, 24}, /* 23 */
2229	{8,1,-1}, /* 24 */	2224	{8, 1, -1}, /* 24 */
2230	{24,9,10}, /* 25 */	2225	{24, 9, 10}, /* 25 */
2231	{9,10,-1}, /* 26 */	2226	{9, 10, -1}, /* 26 */
2232	{10,11,-1}, /* 27 */	2227	{10, 11, -1}, /* 27 */
2233	{27,11,29}, /* 28 */	2228	{27, 11, 29}, /* 28 */
2234	{11,12,-1}, /* 29 */	2229	{11, 12, -1}, /* 29 */
2235	{12,13,-1}, /* 30 */	2230	{12, 13, -1}, /* 30 */
2236	{12,13,14}, /* 31 */	2231	{12, 13, 14}, /* 31 */
2237	{13,14,-1}, /* 32 */	2232	{13, 14, -1}, /* 32 */
2238	{14,15,-1}, /* 33 */	2233	{14, 15, -1}, /* 33 */
2239	{33,15,35}, /* 34 */	2234	{33, 15, 35}, /* 34 */
2240	{16,15,-1}, /* 35 */	2235	{16, 15, -1}, /* 35 */
2241	{17,16,-1}, /* 36 */	2236	{17, 16, -1}, /* 36 */
2242	{18,17,16}, /* 37 */	2237	{18, 17, 16}, /* 37 */
2243	{18,17,-1}, /* 38 */	2238	{18, 17, -1}, /* 38 */
2244	{18,19,-1}, /* 39 */	2239	{18, 19, -1}, /* 39 */
2245	{41,19,39}, /* 40 */	2240	{41, 19, 39}, /* 40 */
2246	{19,20,-1}, /* 41 */	2241	{19, 20, -1}, /* 41 */
2247	{20,21,-1}, /* 42 */	2242	{20, 21, -1}, /* 42 */
2248	{20,21,22}, /* 43 */	2243	{20, 21, 22}, /* 43 */
2249	{21,22,-1}, /* 44 */	2244	{21, 22, -1}, /* 44 */
2250	{23,22,-1}, /* 45 */	2245	{23, 22, -1}, /* 45 */
2251	{45,47,23}, /* 46 */	2246	{45, 47, 23}, /* 46 */
2252	{23,24,-1}, /* 47 */	2247	{23, 24, -1}, /* 47 */
2253	{24,9,-1}}; /* 48 */	2248	{24, 9, -1}
		2249	}; /* 48 */
2254		2250
2255	/* Recursive routine to step back and see if we can	2251	/* Recursive routine to step back and see if we can
2256	* find a path to that monster that we found. If not,	2252	* find a path to that monster that we found. If not,
2257	* we don't bother going toward it. Returns 1 if we	2253	* we don't bother going toward it. Returns 1 if we
2258	* can see a direct way to get it	2254	* can see a direct way to get it
2259	* Modified to be map tile aware -.MSW	2255	* Modified to be map tile aware -.MSW
2260	*/	2256	*/
2261		2257	int
2262
2263	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2258	can_see_monsterP (maptile *m, int x, int y, int dir)
		2259	{
2264	sint16 dx, dy;	2260	sint16 dx, dy;
2265	int mflags;	2261	int mflags;
2266		2262
		2263	if (dir < 0)
2267	if(dir<0) return 0; /* exit condition: invalid direction */	2264	return 0; /* exit condition: invalid direction */
2268		2265
2269	dx = x + freearr_x[dir];	2266	dx = x + freearr_x[dir];
2270	dy = y + freearr_y[dir];	2267	dy = y + freearr_y[dir];
2271		2268
2272	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2269	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2273		2270
2274	/* This functional arguably was incorrect before - it was	2271	/* This functional arguably was incorrect before - it was
2275	* checking for P_WALL - that was basically seeing if	2272	* checking for P_WALL - that was basically seeing if
2276	* we could move to the monster - this is being more	2273	* we could move to the monster - this is being more
2277	* literal on if we can see it. To know if we can actually	2274	* literal on if we can see it. To know if we can actually
2278	* move to the monster, we'd need the monster passed in or	2275	* move to the monster, we'd need the monster passed in or
2279	* at least its move type.	2276	* at least its move type.
2280	*/	2277	*/
2281	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2278	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2279	return 0;
2282		2280
2283	/* yes, can see. */	2281	/* yes, can see. */
2284	if(dir < 9) return 1;	2282	if (dir < 9)
		2283	return 1;
		2284
2285	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2285	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2286	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2286	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2287	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2287	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2288	}	2288	}
2289		2289
2290
2291
2292	/*	2290	/*
2293	* can_pick(picker, item): finds out if an object is possible to be	2291	* can_pick(picker, item): finds out if an object is possible to be
2294	* picked up by the picker. Returnes 1 if it can be	2292	* picked up by the picker. Returnes 1 if it can be
2295	* picked up, otherwise 0.	2293	* picked up, otherwise 0.
2296	*	2294	*
2297	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2295	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2298	* core dumps if they do.	2296	* core dumps if they do.
2299	*	2297	*
2300	* Add a check so we can't pick up invisible objects (0.93.8)	2298	* Add a check so we can't pick up invisible objects (0.93.8)
2301	*/	2299	*/
2302		2300	int
2303	int can_pick(const object *who, const object *item) {	2301	can_pick (const object *who, const object *item)
		2302	{
2304	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2303	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2305	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2304	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2306	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2305	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2307	(who->type==PLAYER||item->weight<who->weight/3));
2308	}	2306	}
2309
2310		2307
2311	/*	2308	/*
2312	* create clone from object to another	2309	* create clone from object to another
2313	*/	2310	*/
		2311	object *
2314	object *object_create_clone (object *asrc) {	2312	object_create_clone (object *asrc)
2315	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2313	{
		2314	object *dst = 0;
2316		2315
2317	if(!asrc) return NULL;	2316	if (!asrc)
2318	src = asrc;	2317	return 0;
2319	if(src->head)
2320	src = src->head;
2321		2318
2322	prev = NULL;	2319	object *src = asrc->head_ ();
		2320
		2321	object *prev = 0;
2323	for(part = src; part; part = part->more) {	2322	for (object *part = src; part; part = part->more)
2324	tmp = get_object();	2323	{
2325	copy_object(part,tmp);	2324	object *tmp = part->clone ();
		2325
2326	tmp->x -= src->x;	2326	tmp->x -= src->x;
2327	tmp->y -= src->y;	2327	tmp->y -= src->y;
		2328
2328	if(!part->head) {	2329	if (!part->head)
		2330	{
2329	dst = tmp;	2331	dst = tmp;
2330	tmp->head = NULL;
2331	} else {
2332	tmp->head = dst;	2332	tmp->head = 0;
2333	}	2333	}
		2334	else
		2335	tmp->head = dst;
		2336
2334	tmp->more = NULL;	2337	tmp->more = 0;
		2338
2335	if(prev)	2339	if (prev)
2336	prev->more = tmp;	2340	prev->more = tmp;
		2341
2337	prev = tmp;	2342	prev = tmp;
2338	}	2343	}
2339	/*** copy inventory ***/	2344
2340	for(item = src->inv; item; item = item->below) {	2345	for (object *item = src->inv; item; item = item->below)
2341	(void) insert_ob_in_ob(object_create_clone(item),dst);	2346	insert_ob_in_ob (object_create_clone (item), dst);
2342	}
2343		2347
2344	return dst;	2348	return dst;
2345	}
2346
2347	/* return true if the object was destroyed, 0 otherwise */
2348	int was_destroyed (const object *op, tag_t old_tag)
2349	{
2350	/* checking for FLAG_FREED isn't necessary, but makes this function more
2351	* robust */
2352	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2353	}
2354
2355	/* GROS - Creates an object using a string representing its content. */
2356	/* Basically, we save the content of the string to a temp file, then call */
2357	/* load_object on it. I admit it is a highly inefficient way to make things, */
2358	/* but it was simple to make and allows reusing the load_object function. */
2359	/* Remember not to use load_object_str in a time-critical situation. */
2360	/* Also remember that multiparts objects are not supported for now. */
2361
2362	object* load_object_str(const char *obstr)
2363	{
2364	object *op;
2365	char filename[MAX_BUF];
2366	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2367
2368	FILE *tempfile=fopen(filename,"w");
2369	if (tempfile == NULL)
2370	{
2371	LOG(llevError,"Error - Unable to access load object temp file\n");
2372	return NULL;
2373	};
2374	fprintf(tempfile,obstr);
2375	fclose(tempfile);
2376
2377	op=get_object();
2378
2379	object_thawer thawer (filename);
2380
2381	if (thawer)
2382	load_object(thawer,op,0);
2383
2384	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2385	CLEAR_FLAG(op,FLAG_REMOVED);
2386
2387	return op;
2388	}	2349	}
2389		2350
2390	/* This returns the first object in who's inventory that	2351	/* This returns the first object in who's inventory that
2391	* has the same type and subtype match.	2352	* has the same type and subtype match.
2392	* returns NULL if no match.	2353	* returns NULL if no match.
2393	*/	2354	*/
		2355	object *
2394	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2356	find_obj_by_type_subtype (const object *who, int type, int subtype)
2395	{	2357	{
2396	object *tmp;
2397
2398	for (tmp=who->inv; tmp; tmp=tmp->below)	2358	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2399	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2359	if (tmp->type == type && tmp->subtype == subtype)
		2360	return tmp;
2400		2361
2401	return NULL;	2362	return 0;
2402	}	2363	}
2403		2364
2404	/* If ob has a field named key, return the link from the list,	2365	const shstr &
2405	* otherwise return NULL.	2366	object::kv_get (const shstr &key) const
2406	*	2367	{
2407	* key must be a passed in shared string - otherwise, this won't	2368	for (key_value *kv = key_values; kv; kv = kv->next)
2408	* do the desired thing.	2369	if (kv->key == key)
2409	*/	2370	return kv->value;
2410	key_value * get_ob_key_link(const object * ob, const char * key) {	2371
2411	key_value * link;	2372	return shstr_null;
		2373	}
		2374
		2375	void
		2376	object::kv_set (const shstr &key, const shstr &value)
		2377	{
		2378	for (key_value *kv = key_values; kv; kv = kv->next)
		2379	if (kv->key == key)
		2380	{
		2381	kv->value = value;
		2382	return;
		2383	}
		2384
		2385	key_value *kv = new key_value;
		2386
		2387	kv->next = key_values;
		2388	kv->key = key;
		2389	kv->value = value;
		2390
		2391	key_values = kv;
		2392	}
		2393
		2394	void
		2395	object::kv_del (const shstr &key)
		2396	{
		2397	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2398	if ((*kvp)->key == key)
		2399	{
		2400	key_value *kv = *kvp;
		2401	*kvp = (*kvp)->next;
		2402	delete kv;
		2403	return;
		2404	}
		2405	}
		2406
		2407	object::depth_iterator::depth_iterator (object *container)
		2408	: iterator_base (container)
		2409	{
		2410	while (item->inv)
		2411	item = item->inv;
		2412	}
		2413
		2414	void
		2415	object::depth_iterator::next ()
		2416	{
		2417	if (item->below)
2412		2418	{
2413	for (link = ob->key_values; link != NULL; link = link->next) {	2419	item = item->below;
2414	if (link->key == key) {	2420
2415	return link;	2421	while (item->inv)
		2422	item = item->inv;
		2423	}
		2424	else
		2425	item = item->env;
		2426	}
		2427
		2428	const char *
		2429	object::flag_desc (char *desc, int len) const
		2430	{
		2431	char *p = desc;
		2432	bool first = true;
		2433
		2434	*p = 0;
		2435
		2436	for (int i = 0; i < NUM_FLAGS; i++)
		2437	{
		2438	if (len <= 10) // magic constant!
		2439	{
		2440	snprintf (p, len, ",...");
		2441	break;
2416	}	2442	}
2417	}
2418
2419	return NULL;
2420	}
2421		2443
2422	/*	2444	if (flag [i])
2423	* Returns the value of op has an extra_field for key, or NULL.
2424	*
2425	* The argument doesn't need to be a shared string.
2426	*
2427	* The returned string is shared.
2428	*/
2429	const char * get_ob_key_value(const object * op, const char * const key) {
2430	key_value * link;
2431	const char * canonical_key;
2432
2433	canonical_key = shstr::find (key);
2434
2435	if (canonical_key == NULL) {
2436	/* 1. There being a field named key on any object
2437	* implies there'd be a shared string to find.
2438	* 2. Since there isn't, no object has this field.
2439	* 3. Therefore, *this* object doesn't have this field.
2440	*/	2445	{
2441	return NULL;	2446	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2442	}	2447	len -= cnt;
2443		2448	p += cnt;
2444	/* This is copied from get_ob_key_link() above -	2449	first = false;
2445	* only 4 lines, and saves the function call overhead.
2446	*/
2447	for (link = op->key_values; link != NULL; link = link->next) {
2448	if (link->key == canonical_key) {
2449	return link->value;
2450	}	2450	}
2451	}	2451	}
		2452
		2453	return desc;
		2454	}
		2455
		2456	// return a suitable string describing an object in enough detail to find it
		2457	const char *
		2458	object::debug_desc (char *info) const
		2459	{
		2460	char flagdesc[512];
		2461	char info2[256 * 4];
		2462	char *p = info;
		2463
		2464	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2465	count,
		2466	uuid.c_str (),
		2467	&name,
		2468	title ? "\",title:\"" : "",
		2469	title ? (const char *)title : "",
		2470	flag_desc (flagdesc, 512), type);
		2471
		2472	if (!flag[FLAG_REMOVED] && env)
		2473	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2474
		2475	if (map)
		2476	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2477
		2478	return info;
		2479	}
		2480
		2481	const char *
		2482	object::debug_desc () const
		2483	{
		2484	static char info[3][256 * 4];
		2485	static int info_idx;
		2486
		2487	return debug_desc (info [++info_idx % 3]);
		2488	}
		2489
		2490	struct region *
		2491	object::region () const
		2492	{
		2493	return map ? map->region (x, y)
		2494	: region::default_region ();
		2495	}
		2496
		2497	const materialtype_t *
		2498	object::dominant_material () const
		2499	{
		2500	if (materialtype_t *mt = name_to_material (materialname))
		2501	return mt;
		2502
		2503	return name_to_material (shstr_unknown);
		2504	}
		2505
		2506	void
		2507	object::open_container (object *new_container)
		2508	{
		2509	if (container == new_container)
2452	return NULL;	2510	return;
2453	}
2454		2511
		2512	object *old_container = container;
2455		2513
2456	/*	2514	if (old_container)
2457	* Updates the canonical_key in op to value.
2458	*
2459	* canonical_key is a shared string (value doesn't have to be).
2460	*
2461	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2462	* keys.
2463	*
2464	* Returns TRUE on success.
2465	*/
2466	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {
2467	key_value * field = NULL, *last=NULL;
2468		2515	{
2469	for (field=op->key_values; field != NULL; field=field->next) {	2516	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2470	if (field->key != canonical_key) {	2517	return;
2471	last = field;	2518
2472	continue;	2519	#if 0
		2520	// remove the "Close old_container" object.
		2521	if (object *closer = old_container->inv)
		2522	if (closer->type == CLOSE_CON)
		2523	closer->destroy ();
		2524	#endif
		2525
		2526	// make sure the container is available
		2527	esrv_send_item (this, old_container);
		2528
		2529	old_container->flag [FLAG_APPLIED] = false;
		2530	container = 0;
		2531
		2532	// client needs item update to make it work, client bug requires this to be separate
		2533	esrv_update_item (UPD_FLAGS, this, old_container);
		2534
		2535	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
		2536	play_sound (sound_find ("chest_close"));
		2537	}
		2538
		2539	if (new_container)
		2540	{
		2541	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2542	return;
		2543
		2544	// TODO: this does not seem to serve any purpose anymore?
		2545	#if 0
		2546	// insert the "Close Container" object.
		2547	if (archetype *closer = new_container->other_arch)
		2548	{
		2549	object *closer = arch_to_object (new_container->other_arch);
		2550	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2551	new_container->insert (closer);
2473	}	2552	}
		2553	#endif
		2554
		2555	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2556
		2557	// make sure the container is available, client bug requires this to be separate
		2558	esrv_send_item (this, new_container);
		2559
		2560	new_container->flag [FLAG_APPLIED] = true;
		2561	container = new_container;
		2562
		2563	// client needs flag change
		2564	esrv_update_item (UPD_FLAGS, this, new_container);
		2565	esrv_send_inventory (this, new_container);
		2566	play_sound (sound_find ("chest_open"));
2474		2567	}
2475	if (value)	2568	// else if (!old_container->env && contr && contr->ns)
2476	field->value = value;	2569	// contr->ns->floorbox_reset ();
2477	else {	2570	}
2478	/* Basically, if the archetype has this key set,
2479	* we need to store the null value so when we save
2480	* it, we save the empty value so that when we load,
2481	* we get this value back again.
2482	*/
2483	if (get_ob_key_link (&op->arch->clone, canonical_key))
2484	field->value = 0;
2485	else
2486	{
2487	if (last) last->next = field->next;
2488	else op->key_values = field->next;
2489		2571
2490	delete field;	2572	object *
2491	}	2573	object::force_find (const shstr name)
2492	}	2574	{
2493	return TRUE;	2575	/* cycle through his inventory to look for the MARK we want to
2494	}	2576	* place
2495	/* IF we get here, key doesn't exist */	2577	*/
		2578	for (object *tmp = inv; tmp; tmp = tmp->below)
		2579	if (tmp->type == FORCE && tmp->slaying == name)
		2580	return splay (tmp);
2496		2581
2497	/* No field, we'll have to add it. */	2582	return 0;
		2583	}
		2584
		2585	void
		2586	object::force_add (const shstr name, int duration)
		2587	{
		2588	if (object *force = force_find (name))
		2589	force->destroy ();
		2590
		2591	object *force = get_archetype (FORCE_NAME);
		2592
		2593	force->slaying = name;
		2594	force->stats.food = 1;
		2595	force->speed_left = -1.f;
		2596
		2597	force->set_speed (duration ? 1.f / duration : 0.f);
		2598	force->flag [FLAG_IS_USED_UP] = true;
		2599	force->flag [FLAG_APPLIED] = true;
		2600
		2601	insert (force);
		2602	}
		2603
		2604	void
		2605	object::play_sound (faceidx sound)
		2606	{
		2607	if (!sound)
		2608	return;
		2609
		2610	if (flag [FLAG_REMOVED])
		2611	return;
		2612
		2613	if (env)
2498		2614	{
2499	if (!add_key) {	2615	if (object *pl = in_player ())
2500	return FALSE;	2616	pl->contr->play_sound (sound);
2501	}
2502	/* There isn't any good reason to store a null
2503	* value in the key/value list. If the archetype has
2504	* this key, then we should also have it, so shouldn't
2505	* be here. If user wants to store empty strings,
2506	* should pass in ""
2507	*/
2508	if (value == NULL) return TRUE;
2509		2617	}
2510	field = new key_value;	2618	else
2511		2619	map->play_sound (sound, x, y);
2512	field->key = canonical_key;
2513	field->value = value;
2514	/* Usual prepend-addition. */
2515	field->next = op->key_values;
2516	op->key_values = field;
2517
2518	return TRUE;
2519	}	2620	}
2520		2621
2521	/*
2522	* Updates the key in op to value.
2523	*
2524	* If add_key is FALSE, this will only update existing keys,
2525	* and not add new ones.
2526	* In general, should be little reason FALSE is ever passed in for add_key
2527	*
2528	* Returns TRUE on success.
2529	*/
2530	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)
2531	{
2532	shstr key_ (key);
2533	return set_ob_key_value_s (op, key_, value, add_key);
2534	}

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