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Comparing deliantra/server/common/object.C (file contents):
Revision 1.15 by root, Mon Sep 4 13:55:54 2006 UTC vs.
Revision 1.312 by elmex, Sat Mar 20 00:42:08 2010 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: object.C,v 1.15 2006/09/04 13:55:54 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 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 it under
13	it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
14	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
15	(at your option) any later version.	11	* option) any later version.
16		12	*
17	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the Affero GNU General Public License
23	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
25		21	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	* The authors can be reached via e-mail to <support@deliantra.net>
27	*/	23	*/
28		24
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	25	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	26	#include <stdio.h>
35	#include <sys/types.h>	27	#include <sys/types.h>
36	#include <sys/uio.h>	28	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	29	#include <object.h>
39	#include <funcpoint.h>	30	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>
42	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	uint32_t mapspace::smellcount = 10000;
		38
		39	objectvec objects;
		40	activevec actives;
		41
		42	//+GPL
		43
47	short freearr_x[SIZEOFFREE]=	44	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,	45	0,
		46	0, 1, 1, 1, 0, -1, -1, -1,
		47	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
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};	48	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		49	};
50	short freearr_y[SIZEOFFREE]=	50	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,	51	0,
		52	-1, -1, 0, 1, 1, 1, 0, -1,
		53	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
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};	54	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	int maxfree[SIZEOFFREE]=	55	};
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,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};
56	int freedir[SIZEOFFREE]= {	56	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,	57	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};	58	1, 2, 3, 4, 5, 6, 7, 8,
		59	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		60	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		61	};
59		62
		63	static int maxfree[SIZEOFFREE] = {
		64	0,
		65	9, 10, 13, 14, 17, 18, 21, 22,
		66	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		67	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		68	};
		69
		70	static void
		71	write_uuid (uval64 skip, bool sync)
		72	{
		73	CALL_BEGIN (2);
		74	CALL_ARG_SV (newSVval64 (skip));
		75	CALL_ARG_SV (boolSV (sync));
		76	CALL_CALL ("cf::write_uuid", G_DISCARD);
		77	CALL_END;
		78	}
		79
		80	static void
		81	read_uuid ()
		82	{
		83	char filename[MAX_BUF];
		84
		85	sprintf (filename, "%s/uuid", settings.localdir);
		86
		87	seq_next_save = 0;
		88
		89	FILE *fp;
		90
		91	if (!(fp = fopen (filename, "r")))
		92	{
		93	if (errno == ENOENT)
		94	{
		95	LOG (llevInfo, "RESET uid to 1\n");
		96	UUID::cur.seq = 0;
		97	write_uuid (UUID_GAP, true);
		98	return;
		99	}
		100
		101	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		102	_exit (1);
		103	}
		104
		105	char buf [UUID::MAX_LEN];
		106	buf[0] = 0;
		107	fgets (buf, sizeof (buf), fp);
		108
		109	if (!UUID::cur.parse (buf))
		110	{
		111	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		112	_exit (1);
		113	}
		114
		115	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		116
		117	write_uuid (UUID_GAP, true);
		118	fclose (fp);
		119	}
		120
		121	UUID
		122	UUID::gen ()
		123	{
		124	UUID uid;
		125
		126	uid.seq = ++cur.seq;
		127
		128	if (expect_false (cur.seq >= seq_next_save))
		129	{
		130	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		131	write_uuid (UUID_GAP, false);
		132	}
		133
		134
		135	return uid;
		136	}
		137
		138	void
		139	UUID::init ()
		140	{
		141	read_uuid ();
		142	}
		143
		144	bool
		145	UUID::parse (const char *s)
		146	{
		147	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		148	return false;
		149
		150	seq = 0;
		151
		152	while (*s != '>')
		153	{
		154	if (*s < '0')
		155	return false;
		156
		157	// this gives nice branchless code with gcc
		158	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		159	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		160
		161	seq = (seq << 4) | digit;
		162
		163	++s;
		164	}
		165
		166	return true;
		167	}
		168
		169	char *
		170	UUID::append (char *buf) const
		171	{
		172	*buf++ = '<';
		173	*buf++ = '1';
		174	*buf++ = '.';
		175
		176	uint64_t seq = this->seq;
		177	const int bits = 64;
		178	char nz = 0;
		179	static const char tohex [] = "0123456789abcdef";
		180
		181	// assert (len >= 3 + bits / 4 + 1 + 1);
		182	for (int i = bits / 4; --i; )
		183	{
		184	uint8_t digit = seq >> (bits - 4);
		185
		186	*buf = tohex [digit];
		187	nz |= digit;
		188	buf += nz ? 1 : 0;
		189	seq <<= 4;
		190	}
		191
		192	// last digit is special - always emit
		193	uint8_t digit = seq >> (bits - 4);
		194	*buf++ = tohex [digit];
		195
		196	*buf++ = '>';
		197
		198	return buf;
		199	}
		200
		201	char *
		202	UUID::c_str () const
		203	{
		204	static char buf [MAX_LEN];
		205	*append (buf) = 0;
		206	return buf;
		207	}
60		208
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	209	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		210	static bool
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	211	compare_ob_value_lists_one (const object *wants, const object *has)
63	key_value * wants_field;	212	{
64
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	213	/* n-squared behaviour (see kv_get), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	214	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	215	* different structure or at least keep the lists sorted...
68	*/	216	*/
69		217
70	/* For each field in wants, */	218	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	219	for (key_value *kv = wants->key_values; kv; kv = kv->next)
72	key_value * has_field;	220	if (has->kv_get (kv->key) != kv->value)
73		221	return false;
74	/* Look for a field in has with the same key. */	222
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. */	223	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	224	return true;
93	}	225	}
94		226
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	227	/* Returns TRUE if ob1 has the same key_values as ob2. */
		228	static bool
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	229	compare_ob_value_lists (const object *ob1, const object *ob2)
		230	{
97	/* However, there may be fields in has which aren't partnered in wants,	231	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	232	* so we need to run the comparison *twice*. :(
99	*/	233	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	234	return compare_ob_value_lists_one (ob1, ob2)
		235	&& compare_ob_value_lists_one (ob2, ob1);
101	}	236	}
102		237
103	/* Function examines the 2 objects given to it, and returns true if	238	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	239	* they can be merged together.
105	*	240	*
106	* Note that this function appears a lot longer than the macro it	241	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	242	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	243	* reduce this to the same efficiency.
109	*	244	*
110	* Check nrof variable *before* calling CAN_MERGE()	245	* Check nrof variable *before* calling can_merge()
111	*	246	*
112	* Improvements made with merge: Better checking on potion, and also	247	* Improvements made with merge: Better checking on potion, and also
113	* check weight	248	* check weight
114	*/	249	*/
115		250	bool object::can_merge_slow (object *ob1, object *ob2)
116	int CAN_MERGE(object *ob1, object *ob2) {	251	{
117
118	/* A couple quicksanity checks */	252	/* A couple quick sanity checks */
119	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	253	if (ob1 == ob2
		254	|| ob1->type != ob2->type
		255	|| ob1->value != ob2->value
		256	|| ob1->name != ob2->name
		257	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
		258	return 0;
120		259
121	if (ob1->speed != ob2->speed) return 0;	260	/* Do not merge objects if nrof would overflow, assume nrof
		261	* is always 0 .. 2**31-1 */
		262	if (ob1->nrof > 0x7fffffff - ob2->nrof)
		263	return 0;
		264
		265	/* If the objects have been identified, set the BEEN_APPLIED flag.
		266	* This is to the comparison of the flags below will be OK. We
		267	* just can't ignore the been applied or identified flags, as they
		268	* are not equal - just if it has been identified, the been_applied
		269	* flags lose any meaning.
		270	*/
		271	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		272	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		273
		274	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		275	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		276
		277	if (ob1->arch->archname != ob2->arch->archname
		278	|| ob1->name != ob2->name
		279	|| ob1->title != ob2->title
		280	|| ob1->msg != ob2->msg
		281	|| ob1->weight != ob2->weight
		282	|| ob1->attacktype != ob2->attacktype
		283	|| ob1->magic != ob2->magic
		284	|| ob1->slaying != ob2->slaying
		285	|| ob1->skill != ob2->skill
		286	|| ob1->value != ob2->value
		287	|| ob1->animation_id != ob2->animation_id
		288	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
		289	|| ob1->client_type != ob2->client_type
		290	|| ob1->material != ob2->material
		291	|| ob1->lore != ob2->lore
		292	|| ob1->subtype != ob2->subtype
		293	|| ob1->move_type != ob2->move_type
		294	|| ob1->move_block != ob2->move_block
		295	|| ob1->move_allow != ob2->move_allow
		296	|| ob1->move_on != ob2->move_on
		297	|| ob1->move_off != ob2->move_off
		298	|| ob1->move_slow != ob2->move_slow
		299	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		300	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		301	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
		302	return 0;
		303
		304	if ((ob1->flag ^ ob2->flag)
		305	.reset (FLAG_INV_LOCKED)
		306	.reset (FLAG_REMOVED)
		307	.any ())
		308	return 0;
		309
		310	/* This is really a spellbook check - we should in general
		311	* not merge objects with real inventories, as splitting them
		312	* is hard.
		313	*/
		314	if (ob1->inv || ob2->inv)
		315	{
		316	if (!(ob1->inv && ob2->inv))
		317	return 0; /* inventories differ in length */
		318
		319	if (ob1->inv->below || ob2->inv->below)
		320	return 0; /* more than one object in inv */
		321
		322	if (!object::can_merge (ob1->inv, ob2->inv))
		323	return 0; /* inventory objects differ */
		324
		325	/* inventory ok - still need to check rest of this object to see
		326	* if it is valid.
		327	*/
		328	}
		329
		330	/* Don't merge objects that are applied. With the new 'body' code,
		331	* it is possible for most any character to have more than one of
		332	* some items equipped, and we don't want those to merge.
		333	*/
		334	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		335	return 0;
		336
122	/* Note sure why the following is the case - either the object has to	337	/* Note sure why the following is the case - either the object has to
123	* be animated or have a very low speed. Is this an attempted monster	338	* be animated or have a very low speed. Is this an attempted monster
124	* check?	339	* check?
125	*/	340	*/
126	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	341	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
		342	return 0;
		343
		344	switch (ob1->type)
		345	{
		346	case SCROLL:
		347	if (ob1->level != ob2->level)
		348	return 0;
		349	break;
		350	}
		351
		352	if (ob1->key_values || ob2->key_values)
		353	{
		354	/* At least one of these has key_values. */
		355	if ((!ob1->key_values) != (!ob2->key_values))
		356	return 0; /* One has fields, but the other one doesn't. */
		357
		358	if (!compare_ob_value_lists (ob1, ob2))
127	return 0;	359	return 0;
		360	}
128		361
129	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	362	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	}	363	{
		364	ob1->optimise ();
		365	ob2->optimise ();
150		366
151	/* If the objects have been identified, set the BEEN_APPLIED flag.	367	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	)	368	{
		369	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		370	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		371
		372	if (k1 != k2)
197	return 0;	373	return 0;
198		374
199	/* Don't merge objects that are applied. With the new 'body' code,	375	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;	376	return 1;
217	} else if (!compare_ob_value_lists(ob1, ob2)) {	377
		378	if (!cfperl_can_merge (ob1, ob2))
218	return 0;	379	return 0;
219	}	380	}
220	}	381	}
221		382
222	/* Everything passes, must be OK. */	383	/* Everything passes, must be OK. */
223	return 1;	384	return 1;
224	}	385	}
225		386
		387	// find player who can see this object
		388	object *
		389	object::visible_to () const
		390	{
		391	if (client_visible () && !flag [FLAG_REMOVED])
		392	{
		393	// see if we are in a container of sorts
		394	if (env)
		395	{
		396	// the player inventory itself is always visible
		397	if (env->is_player ())
		398	return env;
		399
		400	// else a player could have our env open
		401	object *envest = env->outer_env_or_self ();
		402
		403	// the player itself is always on a map, so we will find him here
		404	// even if our inv is in a player.
		405	if (envest->is_on_map ())
		406	if (object *pl = envest->ms ().player ())
		407	if (pl->container_ () == env)
		408	return pl;
		409	}
		410	else
		411	{
		412	// maybe there is a player standing on the same mapspace
		413	// this will catch the case where "this" is a player
		414	if (object *pl = ms ().player ())
		415	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		416	|| pl->container_ () == this)
		417	return pl;
		418	}
		419	}
		420
		421	return 0;
		422	}
		423
		424	// adjust weight per container type ("of holding")
		425	static sint32
		426	weight_adjust_for (object *op, sint32 weight)
		427	{
		428	return op->type == CONTAINER
		429	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		430	: weight;
		431	}
		432
226	/*	433	/*
		434	* adjust_weight(object, weight) adds the specified weight to an object,
		435	* and also updates how much the environment(s) is/are carrying.
		436	*/
		437	static void
		438	adjust_weight (object *op, sint32 weight)
		439	{
		440	while (op)
		441	{
		442	// adjust by actual difference to account for rounding errors
		443	// i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
		444	weight = weight_adjust_for (op, op->carrying)
		445	- weight_adjust_for (op, op->carrying - weight);
		446
		447	if (!weight)
		448	return;
		449
		450	op->carrying += weight;
		451
		452	if (object *pl = op->visible_to ())
		453	if (pl != op) // player is handled lazily
		454	esrv_update_item (UPD_WEIGHT, pl, op);
		455
		456	op = op->env;
		457	}
		458	}
		459
		460	/*
227	* sum_weight() is a recursive function which calculates the weight	461	* this is a recursive function which calculates the weight
228	* an object is carrying. It goes through in figures out how much	462	* an object is carrying. It goes through op and figures out how much
229	* containers are carrying, and sums it up.	463	* containers are carrying, and sums it up.
230	*/	464	*/
231	signed long sum_weight(object *op) {	465	void
232	signed long sum;	466	object::update_weight ()
233	object *inv;	467	{
234	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	468	sint32 sum = 0;
		469
		470	for (object *op = inv; op; op = op->below)
		471	{
235	if (inv->inv)	472	if (op->inv)
236	sum_weight(inv);	473	op->update_weight ();
237	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	474
		475	sum += op->total_weight ();
238	}	476	}
239	if (op->type == CONTAINER && op->stats.Str)	477
240	sum = (sum * (100 - op->stats.Str))/100;	478	sum = weight_adjust_for (this, sum);
241	if(op->carrying != sum)	479
		480	if (sum != carrying)
		481	{
242	op->carrying = sum;	482	carrying = sum;
243	return sum;
244	}
245		483
		484	if (object *pl = visible_to ())
		485	if (pl != this) // player is handled lazily
		486	esrv_update_item (UPD_WEIGHT, pl, this);
		487	}
		488	}
		489
246	/**	490	/*
247	* Return the outermost environment object for a given object.	491	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
248	*/	492	*/
249		493	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) {	494	dump_object (object *op)
322	if(op==NULL) {	495	{
323	strcpy(errmsg,"[NULL pointer]");	496	if (!op)
324	return;	497	return strdup ("[NULLOBJ]");
325	}
326	errmsg[0]='\0';
327	dump_object2(op);
328	}
329		498
330	void dump_all_objects(void) {	499	object_freezer freezer;
331	object *op;	500	op->write (freezer);
332	for(op=objects;op!=NULL;op=op->next) {	501	return freezer.as_string ();
333	dump_object(op);
334	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
335	}
336	}	502	}
337		503
338	/*	504	char *
339	* get_nearest_part(multi-object, object 2) returns the part of the	505	object::as_string ()
340	* multi-object 1 which is closest to the second object.	506	{
341	* If it's not a multi-object, it is returned.	507	return dump_object (this);
342	*/
343
344	object *get_nearest_part(object *op, const object *pl) {
345	object *tmp,*closest;
346	int last_dist,i;
347	if(op->more==NULL)
348	return op;
349	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
350	if((i=distance(tmp,pl))<last_dist)
351	closest=tmp,last_dist=i;
352	return closest;
353	}	508	}
354		509
355	/*	510	/*
356	* Returns the object which has the count-variable equal to the argument.	511	* Returns the object which has the count-variable equal to the argument.
		512	* VERRRY slow.
357	*/	513	*/
358		514	object *
359	object *find_object(tag_t i) {	515	find_object (tag_t i)
360	object *op;	516	{
361	for(op=objects;op!=NULL;op=op->next)	517	for_all_objects (op)
362	if(op->count==i)	518	if (op->count == i)
363	break;
364	return op;	519	return op;
		520
		521	return 0;
		522	}
		523
		524	/*
		525	* Returns the object which has the uuid equal to the argument.
		526	* MOAR VERRRY slow.
		527	*/
		528
		529	object *
		530	find_object_uuid (UUID i)
		531	{
		532	for_all_objects (op)
		533	if (op->uuid == i)
		534	return op;
		535
		536	return 0;
365	}	537	}
366		538
367	/*	539	/*
368	* Returns the first object which has a name equal to the argument.	540	* Returns the first object which has a name equal to the argument.
369	* Used only by the patch command, but not all that useful.	541	* Used only by the patch command, but not all that useful.
370	* Enables features like "patch <name-of-other-player> food 999"	542	* Enables features like "patch <name-of-other-player> food 999"
371	*/	543	*/
372		544	object *
373	object *find_object_name(const char *str) {	545	find_object_name (const char *str)
374	const char *name = shstr::find (str);	546	{
375	object *op;	547	shstr_cmp str_ (str);
376	for(op=objects;op!=NULL;op=op->next)	548
		549	if (str_)
		550	for_all_objects (op)
377	if(&op->name == name)	551	if (op->name == str_)
378	break;	552	return op;
379		553
380	return op;	554	return 0;
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	}	555	}
422		556
423	/*	557	/*
424	* Sets the owner and sets the skill and exp pointers to owner's current	558	* Sets the owner and sets the skill and exp pointers to owner's current
425	* skill and experience objects.	559	* skill and experience objects.
		560	* ACTUALLY NO! investigate! TODO
426	*/	561	*/
427	void set_owner (object *op, object *owner)	562	void
		563	object::set_owner (object *owner)
428	{	564	{
429	if(owner==NULL||op==NULL)	565	// allow objects which own objects
		566	if (owner)
		567	while (owner->owner)
		568	owner = owner->owner;
		569
		570	if (flag [FLAG_FREED])
		571	{
		572	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
430	return;	573	return;
		574	}
431		575
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;	576	this->owner = owner;
448
449	op->ownercount=owner->count;
450	owner->refcount++;
451
452	}	577	}
453		578
454	/* Set the owner to clone's current owner and set the skill and experience	579	int
455	* objects to clone's objects (typically those objects that where the owner's	580	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	{	581	{
466	object *owner = get_owner (clone);	582	if (type == SKILL)
467	if (owner == NULL) {	583	{
468	/* players don't have owners - they own themselves. Update	584	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
469	* as appropriate.	585	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		586	}
		587	else
		588	{
		589	if (slot [body_combat].info) return slot_combat;
		590	if (slot [body_range ].info) return slot_ranged;
		591	}
		592
		593	return slot_none;
		594	}
		595
		596	bool
		597	object::change_weapon (object *ob)
		598	{
		599	if (current_weapon == ob)
		600	return true;
		601
		602	if (chosen_skill)
		603	chosen_skill->flag [FLAG_APPLIED] = false;
		604
		605	current_weapon = ob;
		606	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		607
		608	if (chosen_skill)
		609	chosen_skill->flag [FLAG_APPLIED] = true;
		610
		611	update_stats ();
		612
		613	if (ob)
		614	{
		615	// now check wether any body locations became invalid, in which case
		616	// we cannot apply the weapon at the moment.
		617	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		618	if (slot[i].used < 0)
470	*/	619	{
471	if (clone->type == PLAYER) owner=clone;	620	current_weapon = chosen_skill = 0;
472	else return;	621	update_stats ();
		622
		623	new_draw_info_format (NDI_UNIQUE, 0, this,
		624	"You try to balance all your items at once, "
		625	"but the %s is just too much for your body. "
		626	"[You need to unapply some items first - use the 'body' command to see "
		627	"how many items you cna wera on a specific body part.]", &ob->name);
		628	return false;
		629	}
		630
		631	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		632	}
		633	else
		634	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		635
		636	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
473	}	637	{
474	set_owner(op, owner);	638	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		639	&name, ob->debug_desc ());
		640	return false;
		641	}
475		642
		643	return true;
476	}	644	}
477		645
478	/* Zero the key_values on op, decrementing the shared-string	646	/* Zero the key_values on op, decrementing the shared-string
479	* refcounts and freeing the links.	647	* refcounts and freeing the links.
480	*/	648	*/
		649	static void
481	static void free_key_values(object * op)	650	free_key_values (object *op)
482	{	651	{
483	for (key_value *i = op->key_values; i != 0; )	652	for (key_value *i = op->key_values; i; )
484	{	653	{
485	key_value *next = i->next;	654	key_value *next = i->next;
486	delete i;	655	delete i;
		656
487	i = next;	657	i = next;
488	}	658	}
489		659
490	op->key_values = 0;	660	op->key_values = 0;
491	}	661	}
492		662
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	/*	663	/*
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,	664	* copy_to first frees everything allocated by the dst object,
557	* and then copies the contends of the first object into the second	665	* and then copies the contents of itself into the second
558	* object, allocating what needs to be allocated. Basically, any	666	* object, allocating what needs to be allocated. Basically, any
559	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	667	* 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	668	* if the first object is freed, the pointers in the new object
561	* will point at garbage.	669	* will point at garbage.
562	*/	670	*/
563		671	void
564	void copy_object (object *op2, object *op)	672	object::copy_to (object *dst)
565	{	673	{
566	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	674	dst->remove ();
567	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	675	*(object_copy *)dst = *this;
568		676	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		677
577	/* Copy over key_values, if any. */	678	/* Copy over key_values, if any. */
578	if (op2->key_values != NULL)	679	if (key_values)
579	{	680	{
580	key_value *tail = NULL;	681	key_value *tail = 0;
581	key_value *i;
582
583	op->key_values = NULL;	682	dst->key_values = 0;
584		683
585	for (i = op2->key_values; i != NULL; i = i->next)	684	for (key_value *i = key_values; i; i = i->next)
586	{	685	{
587	key_value *new_link = new key_value;	686	key_value *new_link = new key_value;
588		687
589	new_link->next = NULL;	688	new_link->next = 0;
590	new_link->key = i->key;	689	new_link->key = i->key;
591	new_link->value = i->value;	690	new_link->value = i->value;
592		691
593	/* Try and be clever here, too. */	692	/* Try and be clever here, too. */
594	if (op->key_values == NULL)	693	if (!dst->key_values)
595	{	694	{
596	op->key_values = new_link;	695	dst->key_values = new_link;
597	tail = new_link;	696	tail = new_link;
598	}	697	}
599	else	698	else
600	{	699	{
601	tail->next = new_link;	700	tail->next = new_link;
602	tail = new_link;	701	tail = new_link;
603	}	702	}
604	}	703	}
605	}	704	}
606		705
607	update_ob_speed (op);	706	dst->activate ();
608	}	707	}
609		708
610	/*	709	void
611	* get_object() grabs an object from the list of unused objects, makes	710	object::instantiate ()
612	* sure it is initialised, and returns it.	711	{
613	* If there are no free objects, expand_objects() is called to get more.	712	if (!uuid.seq) // HACK
		713	uuid = UUID::gen ();
		714
		715	// TODO: unclean state changes, should nt be done in copy_to AND instantiate
		716	if (flag [FLAG_RANDOM_SPEED] && speed)
		717	speed_left = - speed - rndm (); // TODO animation
		718	else
		719	speed_left = -1.;
		720
		721	/* copy the body_info to the body_used - this is only really
		722	* need for monsters, but doesn't hurt to do it for everything.
		723	* by doing so, when a monster is created, it has good starting
		724	* values for the body_used info, so when items are created
		725	* for it, they can be properly equipped.
614	*/	726	*/
		727	for (int i = NUM_BODY_LOCATIONS; i--; )
		728	slot[i].used = slot[i].info;
615		729
616	object *get_object ()	730	attachable::instantiate ();
617	{	731	}
618	object *op = new object;
619		732
620	op->count = ++ob_count;	733	object *
		734	object::clone ()
		735	{
		736	object *neu = create ();
		737	copy_to (neu);
621		738
622	op->active_next = 0;	739	// TODO: unclean state changes, should not be done in clone AND instantiate
623	op->active_prev = 0;	740	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
		741	neu->speed_left = - neu->speed - rndm (); // TODO animation
624		742
625	op->next = objects;	743	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	op->expmul = 1.0;
636	op->face = blank_face;
637	op->attacked_by_count = -1;
638
639	return op;	744	return neu;
640	}	745	}
641		746
642	/*	747	/*
643	* If an object with the IS_TURNABLE() flag needs to be turned due	748	* If an object with the IS_TURNABLE() flag needs to be turned due
644	* to the closest player being on the other side, this function can	749	* to the closest player being on the other side, this function can
645	* be called to update the face variable, _and_ how it looks on the map.	750	* be called to update the face variable, _and_ how it looks on the map.
646	*/	751	*/
647		752	void
648	void update_turn_face(object *op) {	753	update_turn_face (object *op)
		754	{
649	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	755	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
650	return;	756	return;
		757
651	SET_ANIMATION(op, op->direction);	758	SET_ANIMATION (op, op->direction);
652	update_object(op,UP_OBJ_FACE);	759	update_object (op, UP_OBJ_FACE);
653	}	760	}
654		761
655	/*	762	/*
656	* Updates the speed of an object. If the speed changes from 0 to another	763	* Updates the speed of an object. If the speed changes from 0 to another
657	* value, or vice versa, then add/remove the object from the active list.	764	* value, or vice versa, then add/remove the object from the active list.
658	* This function needs to be called whenever the speed of an object changes.	765	* This function needs to be called whenever the speed of an object changes.
659	*/	766	*/
		767	void
		768	object::set_speed (float speed)
		769	{
		770	this->speed = speed;
660		771
661	void update_ob_speed(object *op) {	772	if (has_active_speed ())
662	extern int arch_init;	773	activate ();
663
664	/* No reason putting the archetypes objects on the speed list,
665	* since they never really need to be updated.
666	*/
667
668	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
669	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);
670	#ifdef MANY_CORES
671	abort();
672	#else
673	op->speed = 0;
674	#endif
675	}
676	if (arch_init) {
677	return;
678	}
679	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
680	/* If already on active list, don't do anything */
681	if (op->active_next || op->active_prev || op==active_objects)
682	return;
683
684	/* process_events() expects us to insert the object at the beginning
685	* of the list. */
686	op->active_next = active_objects;
687	if (op->active_next!=NULL)
688	op->active_next->active_prev = op;
689	active_objects = op;
690	}
691	else {	774	else
692	/* If not on the active list, nothing needs to be done */	775	deactivate ();
693	if (!op->active_next && !op->active_prev && op!=active_objects)
694	return;
695
696	if (op->active_prev==NULL) {
697	active_objects = op->active_next;
698	if (op->active_next!=NULL)
699	op->active_next->active_prev = NULL;
700	}
701	else {
702	op->active_prev->active_next = op->active_next;
703	if (op->active_next)
704	op->active_next->active_prev = op->active_prev;
705	}
706	op->active_next = NULL;
707	op->active_prev = NULL;
708	}
709	}	776	}
710		777
711	/* This function removes object 'op' from the list of active
712	* objects.
713	* This should only be used for style maps or other such
714	* reference maps where you don't want an object that isn't
715	* in play chewing up cpu time getting processed.
716	* The reverse of this is to call update_ob_speed, which
717	* will do the right thing based on the speed of the object.
718	*/
719	void remove_from_active_list(object *op)
720	{
721	/* If not on the active list, nothing needs to be done */
722	if (!op->active_next && !op->active_prev && op!=active_objects)
723	return;
724
725	if (op->active_prev==NULL) {
726	active_objects = op->active_next;
727	if (op->active_next!=NULL)
728	op->active_next->active_prev = NULL;
729	}
730	else {
731	op->active_prev->active_next = op->active_next;
732	if (op->active_next)
733	op->active_next->active_prev = op->active_prev;
734	}
735	op->active_next = NULL;
736	op->active_prev = NULL;
737	}
738
739	/*	778	/*
740	* update_object() updates the array which represents the map.	779	* update_object() updates the the map.
741	* It takes into account invisible objects (and represent squares covered	780	* It takes into account invisible objects (and represent squares covered
742	* by invisible objects by whatever is below them (unless it's another	781	* by invisible objects by whatever is below them (unless it's another
743	* invisible object, etc...)	782	* invisible object, etc...)
744	* If the object being updated is beneath a player, the look-window	783	* If the object being updated is beneath a player, the look-window
745	* of that player is updated (this might be a suboptimal way of	784	* of that player is updated (this might be a suboptimal way of
746	* updating that window, though, since update_object() is called _often_)	785	* updating that window, though, since update_object() is called _often_)
747	*	786	*
748	* action is a hint of what the caller believes need to be done.	787	* action is a hint of what the caller believes need to be done.
749	* For example, if the only thing that has changed is the face (due to
750	* an animation), we don't need to call update_position until that actually
751	* comes into view of a player. OTOH, many other things, like addition/removal
752	* of walls or living creatures may need us to update the flags now.
753	* current action are:	788	* current action are:
754	* UP_OBJ_INSERT: op was inserted	789	* UP_OBJ_INSERT: op was inserted
755	* UP_OBJ_REMOVE: op was removed	790	* UP_OBJ_REMOVE: op was removed
756	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	791	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
757	* as that is easier than trying to look at what may have changed.	792	* as that is easier than trying to look at what may have changed.
758	* UP_OBJ_FACE: only the objects face has changed.	793	* UP_OBJ_FACE: only the objects face has changed.
759	*/	794	*/
760		795	void
761	void update_object(object *op, int action) {	796	update_object (object *op, int action)
762	int update_now=0, flags;	797	{
763	MoveType move_on, move_off, move_block, move_slow;	798	if (!op)
764		799	{
765	if (op == NULL) {
766	/* this should never happen */	800	/* this should never happen */
767	LOG(llevDebug,"update_object() called for NULL object.\n");	801	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
768	return;	802	return;
769	}
770		803	}
771	if(op->env!=NULL) {	804
		805	if (!op->is_on_map ())
		806	{
772	/* Animation is currently handled by client, so nothing	807	/* Animation is currently handled by client, so nothing
773	* to do in this case.	808	* to do in this case.
774	*/	809	*/
775	return;	810	return;
776	}
777
778	/* If the map is saving, don't do anything as everything is
779	* going to get freed anyways.
780	*/
781	if (!op->map || op->map->in_memory == MAP_SAVING) return;
782		811	}
		812
783	/* make sure the object is within map boundaries */	813	/* make sure the object is within map boundaries */
784	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	814	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
785	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	815	{
786	LOG(llevError,"update_object() called for object out of map!\n");	816	LOG (llevError, "update_object() called for object out of map!\n");
787	#ifdef MANY_CORES	817	#ifdef MANY_CORES
788	abort();	818	abort ();
789	#endif	819	#endif
790	return;	820	return;
791	}
792		821	}
793	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
794	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
795	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
796	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
797	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
798	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
799		822
		823	mapspace &m = op->ms ();
		824
		825	if (!(m.flags_ & P_UPTODATE))
		826	/* nop */;
800	if (action == UP_OBJ_INSERT) {	827	else if (action == UP_OBJ_INSERT)
		828	{
		829	#if 0
		830	// this is likely overkill, TODO: revisit (schmorp)
801	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	831	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
802	update_now=1;
803
804	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	832	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
805	update_now=1;	833	|| (op->is_player () && !(m.flags_ & P_PLAYER))
806		834	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		835	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
807	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	836	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
808	update_now=1;	837	|| (m.move_on | op->move_on ) != m.move_on
809
810	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
811	update_now=1;
812
813	if ((move_on | op->move_on) != move_on) update_now=1;
814	if ((move_off | op->move_off) != move_off) update_now=1;	838	|| (m.move_off | op->move_off ) != m.move_off
		839	|| (m.move_slow | op->move_slow) != m.move_slow
815	/* This isn't perfect, but I don't expect a lot of objects to	840	/* This isn't perfect, but I don't expect a lot of objects to
816	* to have move_allow right now.	841	* have move_allow right now.
817	*/	842	*/
818	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	843	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
819	update_now=1;	844	m.invalidate ();
820	if ((move_slow | op->move_slow) != move_slow) update_now=1;	845	#else
		846	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		847	m.invalidate ();
		848	#endif
821	}	849	}
822	/* if the object is being removed, we can't make intelligent	850	/* if the object is being removed, we can't make intelligent
823	* decisions, because remove_ob can't really pass the object	851	* decisions, because remove_ob can't really pass the object
824	* that is being removed.	852	* that is being removed.
825	*/	853	*/
826	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	854	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
827	update_now=1;	855	m.invalidate ();
828	} else if (action == UP_OBJ_FACE) {	856	else if (action == UP_OBJ_FACE)
829	/* Nothing to do for that case */	857	/* Nothing to do for that case */ ;
830	}
831	else {	858	else
832	LOG(llevError,"update_object called with invalid action: %d\n", action);	859	LOG (llevError, "update_object called with invalid action: %d\n", action);
833	}
834		860
835	if (update_now) {
836	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
837	update_position(op->map, op->x, op->y);
838	}
839
840	if(op->more!=NULL)	861	if (op->more)
841	update_object(op->more, action);	862	update_object (op->more, action);
842	}	863	}
843		864
844		865	object::object ()
845	/*
846	* free_object() frees everything allocated by an object, removes
847	* it from the list of used objects, and puts it on the list of
848	* free objects. The IS_FREED() flag is set in the object.
849	* The object must have been removed by remove_ob() first for
850	* this function to succeed.
851	*
852	* If free_inventory is set, free inventory as well. Else drop items in
853	* inventory to the ground.
854	*/
855
856	void
857	free_object (object * ob)
858	{	866	{
859	free_object2 (ob, 0);	867	SET_FLAG (this, FLAG_REMOVED);
860	}
861		868
862	void	869	//expmul = 1.0; declared const for the time being
863	free_object2 (object * ob, int free_inventory)	870	face = blank_face;
864	{	871	material = MATERIAL_NULL;
865	object *tmp, *op;	872	}
866		873
867	if (!QUERY_FLAG (ob, FLAG_REMOVED))	874	object::~object ()
868	{	875	{
869	LOG (llevDebug, "Free object called with non removed object\n");	876	unlink ();
870	dump_object (ob);	877
871	#ifdef MANY_CORES	878	free_key_values (this);
872	abort ();	879	}
873	#endif	880
		881	static int object_count;
		882
		883	void object::link ()
		884	{
		885	assert (!index);//D
		886	uuid = UUID::gen ();
		887	count = ++object_count;
		888
		889	refcnt_inc ();
		890	objects.insert (this);
		891	}
		892
		893	void object::unlink ()
		894	{
		895	if (!index)
		896	return;
		897
		898	objects.erase (this);
		899	refcnt_dec ();
		900	}
		901
		902	void
		903	object::activate ()
		904	{
		905	/* If already on active list, don't do anything */
		906	if (active)
		907	return;
		908
		909	if (has_active_speed ())
874	}	910	{
		911	if (flag [FLAG_FREED])
		912	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
875		913
876	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	914	actives.insert (this);
877	{	915	}
878	LOG (llevMonster, "Warning: tried to free friendly object.\n");	916	}
		917
		918	void
		919	object::activate_recursive ()
		920	{
		921	activate ();
		922
		923	for (object *op = inv; op; op = op->below)
		924	op->activate_recursive ();
		925	}
		926
		927	/* This function removes object 'op' from the list of active
		928	* objects.
		929	* This should only be used for style maps or other such
		930	* reference maps where you don't want an object that isn't
		931	* in play chewing up cpu time getting processed.
		932	* The reverse of this is to call update_ob_speed, which
		933	* will do the right thing based on the speed of the object.
		934	*/
		935	void
		936	object::deactivate ()
		937	{
		938	/* If not on the active list, nothing needs to be done */
		939	if (!active)
		940	return;
		941
		942	actives.erase (this);
		943	}
		944
		945	void
		946	object::deactivate_recursive ()
		947	{
		948	for (object *op = inv; op; op = op->below)
		949	op->deactivate_recursive ();
		950
		951	deactivate ();
		952	}
		953
		954	void
		955	object::set_flag_inv (int flag, int value)
		956	{
		957	for (object *op = inv; op; op = op->below)
		958	{
		959	op->flag [flag] = value;
		960	op->set_flag_inv (flag, value);
		961	}
		962	}
		963
		964	/*
		965	* Remove and free all objects in the inventory of the given object.
		966	* object.c ?
		967	*/
		968	void
		969	object::destroy_inv (bool drop_to_ground)
		970	{
		971	// need to check first, because the checks below might segfault
		972	// as we might be on an invalid mapspace and crossfire code
		973	// is too buggy to ensure that the inventory is empty.
		974	// corollary: if you create arrows etc. with stuff in its inventory,
		975	// cf will crash below with off-map x and y
		976	if (!inv)
		977	return;
		978
		979	/* Only if the space blocks everything do we not process -
		980	* if some form of movement is allowed, let objects
		981	* drop on that space.
		982	*/
		983	if (!drop_to_ground
		984	|| !map
		985	|| map->in_memory != MAP_ACTIVE
		986	|| map->no_drop
		987	|| ms ().move_block == MOVE_ALL)
		988	{
		989	while (inv)
		990	inv->destroy ();
		991	}
		992	else
		993	{ /* Put objects in inventory onto this space */
		994	while (inv)
		995	{
		996	object *op = inv;
		997
		998	if (op->flag [FLAG_STARTEQUIP]
		999	|| op->flag [FLAG_NO_DROP]
		1000	|| op->type == RUNE
		1001	|| op->type == TRAP
		1002	|| op->flag [FLAG_IS_A_TEMPLATE]
		1003	|| op->flag [FLAG_DESTROY_ON_DEATH])
		1004	op->destroy ();
		1005	else
		1006	map->insert (op, x, y);
		1007	}
		1008	}
		1009	}
		1010
		1011	object *object::create ()
		1012	{
		1013	object *op = new object;
		1014	op->link ();
		1015	return op;
		1016	}
		1017
		1018	static struct freed_map : maptile
		1019	{
		1020	freed_map ()
		1021	{
		1022	path = "<freed objects map>";
		1023	name = "/internal/freed_objects_map";
		1024	width = 3;
		1025	height = 3;
		1026	no_drop = 1;
		1027	no_reset = 1;
		1028
		1029	alloc ();
		1030	in_memory = MAP_ACTIVE;
		1031	}
		1032
		1033	~freed_map ()
		1034	{
		1035	destroy ();
		1036	}
		1037	} freed_map; // freed objects are moved here to avoid crashes
		1038
		1039	void
		1040	object::do_destroy ()
		1041	{
		1042	if (flag [FLAG_IS_LINKED])
		1043	remove_link ();
		1044
		1045	if (flag [FLAG_FRIENDLY])
879	remove_friendly_object (ob);	1046	remove_friendly_object (this);
		1047
		1048	remove ();
		1049
		1050	attachable::do_destroy ();
		1051
		1052	deactivate ();
		1053	unlink ();
		1054
		1055	flag [FLAG_FREED] = 1;
		1056
		1057	// hack to ensure that freed objects still have a valid map
		1058	map = &freed_map;
		1059	x = 1;
		1060	y = 1;
		1061
		1062	if (more)
880	}	1063	{
881		1064	more->destroy ();
882	if (QUERY_FLAG (ob, FLAG_FREED))	1065	more = 0;
883	{	1066	}
884	dump_object (ob);	1067
885	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	1068	head = 0;
		1069
		1070	// clear those pointers that likely might cause circular references
		1071	owner = 0;
		1072	enemy = 0;
		1073	attacked_by = 0;
		1074	current_weapon = 0;
		1075	}
		1076
		1077	void
		1078	object::destroy ()
		1079	{
		1080	if (destroyed ())
		1081	return;
		1082
		1083	if (!is_head () && !head->destroyed ())
		1084	{
		1085	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1086	head->destroy ();
886	return;	1087	return;
887	}	1088	}
888		1089
889	if (ob->more != NULL)	1090	destroy_inv (false);
890	{
891	free_object2 (ob->more, free_inventory);
892	ob->more = NULL;
893	}
894		1091
895	if (ob->inv)	1092	if (is_head ())
896	{	1093	if (sound_destroy)
897	/* Only if the space blocks everything do we not process -	1094	play_sound (sound_destroy);
898	* if some form of movemnt is allowed, let objects	1095	else if (flag [FLAG_MONSTER])
899	* drop on that space.	1096	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
900	*/
901	if (free_inventory || ob->map == NULL
902	|| ob->map->in_memory != MAP_IN_MEMORY
903	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
904	{
905	op = ob->inv;
906		1097
907	while (op != NULL)	1098	attachable::destroy ();
908	{
909	tmp = op->below;
910	remove_ob (op);
911	free_object2 (op, free_inventory);
912	op = tmp;
913	}
914	}
915	else
916	{ /* Put objects in inventory onto this space */
917	op = ob->inv;
918
919	while (op != NULL)
920	{
921	tmp = op->below;
922	remove_ob (op);
923
924	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
925	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
926	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
927	free_object (op);
928	else
929	{
930	op->x = ob->x;
931	op->y = ob->y;
932	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
933	}
934
935	op = tmp;
936	}
937	}
938	}
939
940	/* Remove object from the active list */
941	ob->speed = 0;
942	update_ob_speed (ob);
943
944	SET_FLAG (ob, FLAG_FREED);
945	ob->count = 0;
946
947	/* Remove this object from the list of used objects */
948	if (ob->prev == NULL)
949	{
950	objects = ob->next;
951
952	if (objects != NULL)
953	objects->prev = NULL;
954	}
955	else
956	{
957	ob->prev->next = ob->next;
958
959	if (ob->next != NULL)
960	ob->next->prev = ob->prev;
961	}
962
963	free_key_values (ob);
964
965	/* Now link it with the free_objects list: */
966	ob->prev = 0;
967	ob->next = 0;
968
969	delete ob;
970	}	1099	}
971		1100
972	/*	1101	/* op->remove ():
973	* sub_weight() recursively (outwards) subtracts a number from the
974	* weight of an object (and what is carried by it's environment(s)).
975	*/
976
977	void sub_weight (object *op, signed long weight) {
978	while (op != NULL) {
979	if (op->type == CONTAINER) {
980	weight=(signed long)(weight*(100-op->stats.Str)/100);
981	}
982	op->carrying-=weight;
983	op = op->env;
984	}
985	}
986
987	/* remove_ob(op):
988	* This function removes the object op from the linked list of objects	1102	* This function removes the object op from the linked list of objects
989	* which it is currently tied to. When this function is done, the	1103	* which it is currently tied to. When this function is done, the
990	* object will have no environment. If the object previously had an	1104	* object will have no environment. If the object previously had an
991	* environment, the x and y coordinates will be updated to	1105	* environment, the x and y coordinates will be updated to
992	* the previous environment.	1106	* the previous environment.
993	* Beware: This function is called from the editor as well!
994	*/	1107	*/
		1108	void
		1109	object::do_remove ()
		1110	{
		1111	if (flag [FLAG_REMOVED])
		1112	return;
995		1113
996	void remove_ob(object *op) {	1114	INVOKE_OBJECT (REMOVE, this);
997	object *tmp,*last=NULL;
998	object *otmp;
999	tag_t tag;
1000	int check_walk_off;
1001	mapstruct *m;
1002	sint16 x,y;
1003
1004		1115
1005	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1116	flag [FLAG_REMOVED] = true;
1006	dump_object(op);
1007	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1008		1117
1009	/* Changed it to always dump core in this case. As has been learned	1118	if (more)
1010	* in the past, trying to recover from errors almost always	1119	more->remove ();
1011	* make things worse, and this is a real error here - something
1012	* that should not happen.
1013	* Yes, if this was a mission critical app, trying to do something
1014	* to recover may make sense, but that is because failure of the app
1015	* may have other disastrous problems. Cf runs out of a script
1016	* so is easily enough restarted without any real problems.
1017	* MSW 2001-07-01
1018	*/
1019	abort();
1020	}
1021	if(op->more!=NULL)
1022	remove_ob(op->more);
1023		1120
1024	SET_FLAG(op, FLAG_REMOVED);
1025
1026	/*	1121	/*
1027	* In this case, the object to be removed is in someones	1122	* In this case, the object to be removed is in someones
1028	* inventory.	1123	* inventory.
1029	*/	1124	*/
1030	if(op->env!=NULL) {	1125	if (env)
1031	if(op->nrof)	1126	{
1032	sub_weight(op->env, op->weight*op->nrof);	1127	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1033	else	1128	if (object *pl = visible_to ())
1034	sub_weight(op->env, op->weight+op->carrying);	1129	esrv_del_item (pl->contr, count);
		1130	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1035		1131
1036	/* NO_FIX_PLAYER is set when a great many changes are being	1132	adjust_weight (env, -total_weight ());
1037	* made to players inventory. If set, avoiding the call
1038	* to save cpu time.
1039	*/
1040	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&
1041	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1042	fix_player(otmp);
1043		1133
1044	if(op->above!=NULL)	1134	object *pl = in_player ();
1045	op->above->below=op->below;
1046	else
1047	op->env->inv=op->below;
1048		1135
1049	if(op->below!=NULL)
1050	op->below->above=op->above;
1051
1052	/* we set up values so that it could be inserted into	1136	/* we set up values so that it could be inserted into
1053	* the map, but we don't actually do that - it is up	1137	* the map, but we don't actually do that - it is up
1054	* to the caller to decide what we want to do.	1138	* to the caller to decide what we want to do.
1055	*/	1139	*/
1056	op->x=op->env->x,op->y=op->env->y;	1140	map = env->map;
1057	op->map=op->env->map;	1141	x = env->x;
1058	op->above=NULL,op->below=NULL;	1142	y = env->y;
1059	op->env=NULL;	1143
		1144	// make sure cmov optimisation is applicable
		1145	*(above ? &above->below : &env->inv) = below;
		1146	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1147
		1148	above = 0;
		1149	below = 0;
		1150	env = 0;
		1151
		1152	if (pl && pl->is_player ())
		1153	{
		1154	pl->contr->queue_stats_update ();
		1155
		1156	if (glow_radius && pl->is_on_map ())
		1157	update_all_los (pl->map, pl->x, pl->y);
		1158	}
		1159	}
		1160	else if (map)
		1161	{
		1162	map->dirty = true;
		1163	mapspace &ms = this->ms ();
		1164
		1165	if (object *pl = ms.player ())
		1166	{
		1167	if (is_player ())
		1168	{
		1169	if (!flag [FLAG_WIZPASS])
		1170	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1171
		1172	// leaving a spot always closes any open container on the ground
		1173	if (container && !container->env)
		1174	// this causes spurious floorbox updates, but it ensures
		1175	// that the CLOSE event is being sent.
		1176	close_container ();
		1177
		1178	--map->players;
		1179	map->touch ();
		1180	}
		1181	else if (pl->container_ () == this)
		1182	{
		1183	// removing a container should close it
		1184	close_container ();
		1185	}
		1186
		1187	esrv_del_item (pl->contr, count);
		1188	}
		1189
		1190	/* link the object above us */
		1191	// re-link, make sure compiler can easily use cmove
		1192	*(above ? &above->below : &ms.top) = below;
		1193	*(below ? &below->above : &ms.bot) = above;
		1194
		1195	above = 0;
		1196	below = 0;
		1197
		1198	ms.invalidate ();
		1199
		1200	if (map->in_memory == MAP_SAVING)
1060	return;	1201	return;
1061	}
1062		1202
1063	/* If we get here, we are removing it from a map */	1203	int check_walk_off = !flag [FLAG_NO_APPLY];
1064	if (op->map == NULL) return;
1065		1204
1066	x = op->x;	1205	if (object *pl = ms.player ())
1067	y = op->y;
1068	m = get_map_from_coord(op->map, &x, &y);
1069
1070	if (!m) {
1071	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1072	op->map->path, op->x, op->y);
1073	/* in old days, we used to set x and y to 0 and continue.
1074	* it seems if we get into this case, something is probablye
1075	* screwed up and should be fixed.
1076	*/
1077	abort();
1078	}
1079	if (op->map != m) {
1080	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1081	op->map->path, m->path, op->x, op->y, x, y);
1082	}
1083
1084	/* Re did the following section of code - it looks like it had
1085	* lots of logic for things we no longer care about
1086	*/
1087
1088	/* link the object above us */
1089	if (op->above)
1090	op->above->below=op->below;
1091	else
1092	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1093
1094	/* Relink the object below us, if there is one */
1095	if(op->below) {
1096	op->below->above=op->above;
1097	} else {
1098	/* Nothing below, which means we need to relink map object for this space
1099	* use translated coordinates in case some oddness with map tiling is
1100	* evident
1101	*/
1102	if(GET_MAP_OB(m,x,y)!=op) {
1103	dump_object(op);
1104	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);
1105	dump_object(GET_MAP_OB(m,x,y));
1106	LOG(llevError,"%s\n",errmsg);
1107	}	1206	{
1108	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1207	if (pl->container_ () == this)
1109	}
1110	op->above=NULL;
1111	op->below=NULL;
1112
1113	if (op->map->in_memory == MAP_SAVING)
1114	return;
1115
1116	tag = op->count;
1117	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1118	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1119	/* No point updating the players look faces if he is the object
1120	* being removed.
1121	*/
1122
1123	if(tmp->type==PLAYER && tmp!=op) {
1124	/* If a container that the player is currently using somehow gets	1208	/* If a container that the player is currently using somehow gets
1125	* removed (most likely destroyed), update the player view	1209	* removed (most likely destroyed), update the player view
1126	* appropriately.	1210	* appropriately.
1127	*/	1211	*/
1128	if (tmp->container==op) {	1212	pl->close_container ();
1129	CLEAR_FLAG(op, FLAG_APPLIED);	1213
1130	tmp->container=NULL;	1214	//TODO: the floorbox prev/next might need updating
1131	}	1215	//esrv_del_item (pl->contr, count);
1132	tmp->contr->socket.update_look=1;	1216	//TODO: update floorbox to preserve ordering
		1217	if (pl->contr->ns)
		1218	pl->contr->ns->floorbox_update ();
1133	}	1219	}
		1220
		1221	if (check_walk_off)
		1222	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1223	{
		1224	above = tmp->above;
		1225
		1226	/* No point updating the players look faces if he is the object
		1227	* being removed.
		1228	*/
		1229
1134	/* See if player moving off should effect something */	1230	/* See if object moving off should effect something */
1135	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1231	if ((move_type & tmp->move_off)
1136	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1232	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1137
1138	move_apply(tmp, op, NULL);	1233	move_apply (tmp, this, 0);
1139	if (was_destroyed (op, tag)) {
1140	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1141	"leaving object\n", &tmp->name, &tmp->arch->name);
1142	}	1234	}
1143	}
1144		1235
1145	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1236	if (affects_los ())
1146
1147	if(tmp->above == tmp)
1148	tmp->above = NULL;
1149	last=tmp;
1150	}
1151	/* last == NULL of there are no objects on this space */
1152	if (last==NULL) {
1153	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1154	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1155	* those out anyways, and if there are any flags set right now, they won't
1156	* be correct anyways.
1157	*/
1158	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1159	update_position(op->map, op->x, op->y);
1160	}
1161	else
1162	update_object(last, UP_OBJ_REMOVE);
1163
1164	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1165	update_all_los(op->map, op->x, op->y);	1237	update_all_los (map, x, y);
1166		1238	}
1167	}	1239	}
1168		1240
1169	/*	1241	/*
1170	* merge_ob(op,top):	1242	* merge_ob(op,top):
1171	*	1243	*
1172	* This function goes through all objects below and including top, and	1244	* This function goes through all objects below and including top, and
1173	* merges op to the first matching object.	1245	* merges op to the first matching object.
1174	* If top is NULL, it is calculated.	1246	* If top is NULL, it is calculated.
1175	* Returns pointer to object if it succeded in the merge, otherwise NULL	1247	* Returns pointer to object if it succeded in the merge, otherwise NULL
1176	*/	1248	*/
1177		1249	object *
1178	object *merge_ob(object *op, object *top) {	1250	merge_ob (object *op, object *top)
		1251	{
1179	if(!op->nrof)	1252	if (!op->nrof)
1180	return 0;	1253	return 0;
1181	if(top==NULL)	1254
		1255	if (!top)
1182	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1256	for (top = op; top && top->above; top = top->above)
		1257	;
		1258
1183	for(;top!=NULL;top=top->below) {	1259	for (; top; top = top->below)
1184	if(top==op)	1260	if (object::can_merge (op, top))
1185	continue;
1186	if (CAN_MERGE(op,top))
1187	{	1261	{
1188	top->nrof+=op->nrof;	1262	top->nrof += op->nrof;
1189	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1263
1190	op->weight = 0; /* Don't want any adjustements now */	1264	if (object *pl = top->visible_to ())
1191	remove_ob(op);	1265	esrv_update_item (UPD_NROF, pl, top);
1192	free_object(op);	1266
		1267	op->weight = 0; // cancel the addition above
		1268	op->carrying = 0; // must be 0 already
		1269
		1270	op->destroy ();
		1271
1193	return top;	1272	return top;
1194	}	1273	}
1195	}	1274
1196	return NULL;	1275	return 0;
1197	}	1276	}
1198		1277
		1278	void
		1279	object::expand_tail ()
		1280	{
		1281	if (more)
		1282	return;
		1283
		1284	object *prev = this;
		1285
		1286	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1287	{
		1288	object *op = at->instance ();
		1289
		1290	op->name = name;
		1291	op->name_pl = name_pl;
		1292	op->title = title;
		1293
		1294	op->head = this;
		1295	prev->more = op;
		1296
		1297	prev = op;
		1298	}
		1299	}
		1300
1199	/*	1301	/*
1200	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1302	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1201	* job preparing multi-part monsters	1303	* job preparing multi-part monsters.
1202	*/	1304	*/
		1305	object *
1203	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1306	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1204	object* tmp;	1307	{
1205	if (op->head)	1308	op->remove ();
1206	op=op->head;	1309
1207	for (tmp=op;tmp;tmp=tmp->more){	1310	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1311	{
1208	tmp->x=x+tmp->arch->clone.x;	1312	tmp->x = x + tmp->arch->x;
1209	tmp->y=y+tmp->arch->clone.y;	1313	tmp->y = y + tmp->arch->y;
1210	}	1314	}
		1315
1211	return insert_ob_in_map (op, m, originator, flag);	1316	return insert_ob_in_map (op, m, originator, flag);
1212	}	1317	}
1213		1318
1214	/*	1319	/*
1215	* insert_ob_in_map (op, map, originator, flag):	1320	* insert_ob_in_map (op, map, originator, flag):
1216	* This function inserts the object in the two-way linked list	1321	* This function inserts the object in the two-way linked list
…		…
1229	* Return value:	1334	* Return value:
1230	* new object if 'op' was merged with other object	1335	* new object if 'op' was merged with other object
1231	* NULL if 'op' was destroyed	1336	* NULL if 'op' was destroyed
1232	* just 'op' otherwise	1337	* just 'op' otherwise
1233	*/	1338	*/
1234		1339	object *
1235	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1340	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1236	{	1341	{
1237	object *tmp, *top, *floor=NULL;	1342	op->remove ();
1238	sint16 x,y;
1239		1343
1240	if (QUERY_FLAG (op, FLAG_FREED)) {	1344	if (m == &freed_map)//D TODO: remove soon
1241	LOG (llevError, "Trying to insert freed object!\n");	1345	{//D
1242	return NULL;	1346	LOG (llevError | logBacktrace, "tries to insret object on freed objects map: %s", op->debug_desc ());//D
		1347	}//D
		1348
		1349	/* Ideally, the caller figures this out. However, it complicates a lot
		1350	* of areas of callers (eg, anything that uses find_free_spot would now
		1351	* need extra work
		1352	*/
		1353	maptile *newmap = m;
		1354	if (!xy_normalise (newmap, op->x, op->y))
1243	}	1355	{
1244	if(m==NULL) {	1356	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
1245	dump_object(op);
1246	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1247	return op;	1357	return 0;
1248	}	1358	}
1249	if(out_of_map(m,op->x,op->y)) {	1359
1250	dump_object(op);	1360	if (object *more = op->more)
1251	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1361	if (!insert_ob_in_map (more, m, originator, flag))
1252	#ifdef MANY_CORES
1253	/* Better to catch this here, as otherwise the next use of this object
1254	* is likely to cause a crash. Better to find out where it is getting
1255	* improperly inserted.
1256	*/
1257	abort();
1258	#endif
1259	return op;	1362	return 0;
1260	}
1261	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1262	dump_object(op);
1263	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1264	return op;
1265	}
1266	if(op->more!=NULL) {
1267	/* The part may be on a different map. */
1268		1363
1269	object *more = op->more;	1364	op->flag [FLAG_REMOVED] = false;
		1365	op->env = 0;
		1366	op->map = newmap;
1270		1367
1271	/* We really need the caller to normalize coordinates - if	1368	mapspace &ms = op->ms ();
1272	* we set the map, that doesn't work if the location is within	1369
1273	* a map and this is straddling an edge. So only if coordinate	1370	/* this has to be done after we translate the coordinates.
1274	* is clear wrong do we normalize it.	1371	*/
		1372	if (op->nrof && !(flag & INS_NO_MERGE))
		1373	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1374	if (object::can_merge (op, tmp))
1275	*/	1375	{
1276	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1376	// TODO: we actually want to update tmp, not op,
1277	more->map = get_map_from_coord(m, &more->x, &more->y);	1377	// but some caller surely breaks when we return tmp
1278	} else if (!more->map) {	1378	// from here :/
1279	/* For backwards compatibility - when not dealing with tiled maps,	1379	op->nrof += tmp->nrof;
1280	* more->map should always point to the parent.	1380	tmp->destroy ();
1281	*/
1282	more->map = m;
1283	}	1381	}
1284		1382
1285	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1383	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1286	if ( ! op->head)	1384	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1287	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1385
1288	return NULL;	1386	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1387	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1388
		1389	if (flag & INS_BELOW_ORIGINATOR)
		1390	{
		1391	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1392	{
		1393	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1394	abort ();
1289	}	1395	}
		1396
		1397	if (!originator->is_on_map ())
		1398	{
		1399	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1400	op->debug_desc (), originator->debug_desc ());
		1401	abort ();
		1402	}
		1403
		1404	op->above = originator;
		1405	op->below = originator->below;
		1406	originator->below = op;
		1407
		1408	*(op->below ? &op->below->above : &ms.bot) = op;
		1409	}
		1410	else
1290	}	1411	{
1291	CLEAR_FLAG(op,FLAG_REMOVED);	1412	object *floor = 0;
		1413	object *top = ms.top;
1292		1414
1293	/* Ideally, the caller figures this out. However, it complicates a lot	1415	/* If there are other objects, then */
1294	* of areas of callers (eg, anything that uses find_free_spot would now	1416	if (top)
1295	* need extra work	1417	{
1296	*/	1418	/*
1297	op->map=get_map_from_coord(m, &op->x, &op->y);	1419	* If there are multiple objects on this space, we do some trickier handling.
1298	x = op->x;	1420	* We've already dealt with merging if appropriate.
1299	y = op->y;	1421	* Generally, we want to put the new object on top. But if
		1422	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1423	* floor, we want to insert above that and no further.
		1424	* Also, if there are spell objects on this space, we stop processing
		1425	* once we get to them. This reduces the need to traverse over all of
		1426	* them when adding another one - this saves quite a bit of cpu time
		1427	* when lots of spells are cast in one area. Currently, it is presumed
		1428	* that flying non pickable objects are spell objects.
		1429	*/
		1430	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1431	{
		1432	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) || QUERY_FLAG (tmp, FLAG_OVERLAY_FLOOR))
		1433	floor = tmp;
1300		1434
1301	/* this has to be done after we translate the coordinates.	1435	if (QUERY_FLAG (tmp, FLAG_NO_PICK) && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1302	*/	1436	{
1303	if(op->nrof && !(flag & INS_NO_MERGE)) {	1437	/* We insert above top, so we want this object below this */
1304	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1438	top = tmp->below;
1305	if (CAN_MERGE(op,tmp)) {	1439	break;
1306	op->nrof+=tmp->nrof;	1440	}
1307	remove_ob(tmp);	1441
1308	free_object(tmp);	1442	top = tmp;
1309	}	1443	}
1310	}
1311		1444
1312	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1445	/* We let update_position deal with figuring out what the space
1313	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1446	* looks like instead of lots of conditions here.
1314	if (!QUERY_FLAG(op, FLAG_ALIVE))	1447	* makes things faster, and effectively the same result.
1315	CLEAR_FLAG(op, FLAG_NO_STEAL);	1448	*/
1316		1449
1317	if (flag & INS_BELOW_ORIGINATOR) {	1450	/* Have object 'fall below' other objects that block view.
1318	if (originator->map != op->map || originator->x != op->x ||	1451	* Unless those objects are exits.
1319	originator->y != op->y) {	1452	* If INS_ON_TOP is used, don't do this processing
1320	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1453	* Need to find the object that in fact blocks view, otherwise
1321	abort();	1454	* stacking is a bit odd.
		1455	*/
		1456	if (!(flag & INS_ON_TOP)
		1457	&& ms.flags () & P_BLOCKSVIEW
		1458	&& (op->face && !faces [op->face].visibility))
		1459	{
		1460	object *last;
		1461
		1462	for (last = top; last != floor; last = last->below)
		1463	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1464	break;
		1465
		1466	/* Check to see if we found the object that blocks view,
		1467	* and make sure we have a below pointer for it so that
		1468	* we can get inserted below this one, which requires we
		1469	* set top to the object below us.
		1470	*/
		1471	if (last && last->below && last != floor)
		1472	top = last->below;
		1473	}
		1474	} /* If objects on this space */
		1475
		1476	if (flag & INS_ABOVE_FLOOR_ONLY)
		1477	top = floor;
		1478
		1479	// insert object above top, or bottom-most if top = 0
		1480	if (!top)
		1481	{
		1482	op->below = 0;
		1483	op->above = ms.bot;
		1484	ms.bot = op;
		1485
		1486	*(op->above ? &op->above->below : &ms.top) = op;
1322	}	1487	}
1323	op->above = originator;
1324	op->below = originator->below;
1325	if (op->below) op->below->above = op;
1326	else SET_MAP_OB(op->map, op->x, op->y, op);
1327	/* since *below* originator, no need to update top */
1328	originator->below = op;
1329	} else {	1488	else
1330	/* If there are other objects, then */
1331	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1332	object *last=NULL;
1333	/*
1334	* If there are multiple objects on this space, we do some trickier handling.
1335	* We've already dealt with merging if appropriate.
1336	* Generally, we want to put the new object on top. But if
1337	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1338	* floor, we want to insert above that and no further.
1339	* Also, if there are spell objects on this space, we stop processing
1340	* once we get to them. This reduces the need to traverse over all of
1341	* them when adding another one - this saves quite a bit of cpu time
1342	* when lots of spells are cast in one area. Currently, it is presumed
1343	* that flying non pickable objects are spell objects.
1344	*/
1345
1346	while (top != NULL) {
1347	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1348	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1349	if (QUERY_FLAG(top, FLAG_NO_PICK)
1350	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1351	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1352	{
1353	/* We insert above top, so we want this object below this */
1354	top=top->below;
1355	break;
1356	}
1357	last = top;
1358	top = top->above;
1359	}
1360	/* Don't want top to be NULL, so set it to the last valid object */
1361	top = last;
1362
1363	/* We let update_position deal with figuring out what the space
1364	* looks like instead of lots of conditions here.
1365	* makes things faster, and effectively the same result.
1366	*/
1367
1368	/* Have object 'fall below' other objects that block view.
1369	* Unless those objects are exits, type 66
1370	* If INS_ON_TOP is used, don't do this processing
1371	* Need to find the object that in fact blocks view, otherwise
1372	* stacking is a bit odd.
1373	*/
1374	if (!(flag & INS_ON_TOP) &&
1375	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1376	(op->face && !op->face->visibility)) {
1377	for (last=top; last != floor; last=last->below)
1378	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1379	/* Check to see if we found the object that blocks view,
1380	* and make sure we have a below pointer for it so that
1381	* we can get inserted below this one, which requires we
1382	* set top to the object below us.
1383	*/
1384	if (last && last->below && last != floor) top=last->below;
1385	}
1386	} /* If objects on this space */
1387	if (flag & INS_MAP_LOAD)
1388	top = GET_MAP_TOP(op->map,op->x,op->y);
1389	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1390
1391	/* Top is the object that our object (op) is going to get inserted above.
1392	*/	1489	{
1393
1394	/* First object on this space */
1395	if (!top) {
1396	op->above = GET_MAP_OB(op->map, op->x, op->y);
1397	if (op->above) op->above->below = op;
1398	op->below = NULL;
1399	SET_MAP_OB(op->map, op->x, op->y, op);
1400	} else { /* get inserted into the stack above top */
1401	op->above = top->above;	1490	op->above = top->above;
1402	if (op->above) op->above->below = op;
1403	op->below = top;
1404	top->above = op;	1491	top->above = op;
		1492
		1493	op->below = top;
		1494	*(op->above ? &op->above->below : &ms.top) = op;
1405	}	1495	}
1406	if (op->above==NULL)	1496	}
1407	SET_MAP_TOP(op->map,op->x, op->y, op);
1408	} /* else not INS_BELOW_ORIGINATOR */
1409		1497
1410	if(op->type==PLAYER)	1498	if (op->is_player ())
		1499	{
1411	op->contr->do_los=1;	1500	op->contr->do_los = 1;
		1501	++op->map->players;
		1502	op->map->touch ();
		1503	}
1412		1504
1413	/* If we have a floor, we know the player, if any, will be above	1505	op->map->dirty = true;
1414	* it, so save a few ticks and start from there.
1415	*/
1416	if (!(flag & INS_MAP_LOAD))
1417	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1418	if (tmp->type == PLAYER)
1419	tmp->contr->socket.update_look=1;
1420	}
1421		1506
		1507	if (object *pl = ms.player ())
		1508	//TODO: the floorbox prev/next might need updating
		1509	//esrv_send_item (pl, op);
		1510	//TODO: update floorbox to preserve ordering
		1511	if (pl->contr->ns)
		1512	pl->contr->ns->floorbox_update ();
		1513
1422	/* If this object glows, it may affect lighting conditions that are	1514	/* If this object glows, it may affect lighting conditions that are
1423	* visible to others on this map. But update_all_los is really	1515	* visible to others on this map. But update_all_los is really
1424	* an inefficient way to do this, as it means los for all players	1516	* an inefficient way to do this, as it means los for all players
1425	* on the map will get recalculated. The players could very well	1517	* on the map will get recalculated. The players could very well
1426	* be far away from this change and not affected in any way -	1518	* be far away from this change and not affected in any way -
1427	* this should get redone to only look for players within range,	1519	* this should get redone to only look for players within range,
1428	* or just updating the P_NEED_UPDATE for spaces within this area	1520	* or just updating the P_UPTODATE for spaces within this area
1429	* of effect may be sufficient.	1521	* of effect may be sufficient.
1430	*/	1522	*/
1431	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1523	if (op->affects_los ())
		1524	{
		1525	op->ms ().invalidate ();
1432	update_all_los(op->map, op->x, op->y);	1526	update_all_los (op->map, op->x, op->y);
		1527	}
1433		1528
1434
1435	/* updates flags (blocked, alive, no magic, etc) for this map space */	1529	/* updates flags (blocked, alive, no magic, etc) for this map space */
1436	update_object(op,UP_OBJ_INSERT);	1530	update_object (op, UP_OBJ_INSERT);
1437		1531
		1532	INVOKE_OBJECT (INSERT, op);
1438		1533
1439	/* Don't know if moving this to the end will break anything. However,	1534	/* Don't know if moving this to the end will break anything. However,
1440	* we want to have update_look set above before calling this.	1535	* we want to have floorbox_update called before calling this.
1441	*	1536	*
1442	* check_move_on() must be after this because code called from	1537	* check_move_on() must be after this because code called from
1443	* check_move_on() depends on correct map flags (so functions like	1538	* check_move_on() depends on correct map flags (so functions like
1444	* blocked() and wall() work properly), and these flags are updated by	1539	* blocked() and wall() work properly), and these flags are updated by
1445	* update_object().	1540	* update_object().
1446	*/	1541	*/
1447		1542
1448	/* if this is not the head or flag has been passed, don't check walk on status */	1543	/* if this is not the head or flag has been passed, don't check walk on status */
1449
1450	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1544	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1545	{
1451	if (check_move_on(op, originator))	1546	if (check_move_on (op, originator))
1452	return NULL;	1547	return 0;
1453		1548
1454	/* If we are a multi part object, lets work our way through the check	1549	/* If we are a multi part object, lets work our way through the check
1455	* walk on's.	1550	* walk on's.
1456	*/	1551	*/
1457	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1552	for (object *tmp = op->more; tmp; tmp = tmp->more)
1458	if (check_move_on (tmp, originator))	1553	if (check_move_on (tmp, originator))
1459	return NULL;	1554	return 0;
1460	}	1555	}
		1556
1461	return op;	1557	return op;
1462	}	1558	}
1463		1559
1464	/* this function inserts an object in the map, but if it	1560	/* this function inserts an object in the map, but if it
1465	* finds an object of its own type, it'll remove that one first.	1561	* finds an object of its own type, it'll remove that one first.
1466	* op is the object to insert it under: supplies x and the map.	1562	* op is the object to insert it under: supplies x and the map.
1467	*/	1563	*/
1468	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1564	void
1469	object *tmp;	1565	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1470	object *tmp1;	1566	{
1471
1472	/* first search for itself and remove any old instances */	1567	/* first search for itself and remove any old instances */
1473		1568
1474	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1569	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1475	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1570	if (tmp->arch->archname == archname) /* same archetype */
1476	remove_ob(tmp);	1571	tmp->destroy ();
1477	free_object(tmp);
1478	}
1479	}
1480		1572
1481	tmp1=arch_to_object(find_archetype(arch_string));	1573	object *tmp = archetype::find (archname)->instance ();
1482		1574
1483		1575	tmp->x = op->x;
1484	tmp1->x = op->x; tmp1->y = op->y;	1576	tmp->y = op->y;
		1577
1485	insert_ob_in_map(tmp1,op->map,op,0);	1578	insert_ob_in_map (tmp, op->map, op, 0);
1486	}	1579	}
1487		1580
1488	/*	1581	object *
1489	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1582	object::insert_at (object *where, object *originator, int flags)
1490	* is returned contains nr objects, and the remaining parts contains	1583	{
1491	* the rest (or is removed and freed if that number is 0).	1584	if (where->env)
1492	* On failure, NULL is returned, and the reason put into the	1585	return where->env->insert (this);
1493	* global static errmsg array.	1586	else
1494	*/	1587	return where->map->insert (this, where->x, where->y, originator, flags);
		1588	}
1495		1589
1496	object *get_split_ob(object *orig_ob, uint32 nr) {	1590	// check whether we can put this into the map, respect max_volume, max_items
1497	object *newob;	1591	bool
1498	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1592	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1593	{
		1594	mapspace &ms = m->at (x, y);
1499		1595
1500	if(orig_ob->nrof<nr) {	1596	int items = ms.items ();
1501	sprintf(errmsg,"There are only %d %ss.",
1502	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1503	return NULL;
1504	}
1505	newob = object_create_clone(orig_ob);
1506	if((orig_ob->nrof-=nr)<1) {
1507	if ( ! is_removed)
1508	remove_ob(orig_ob);
1509	free_object2(orig_ob, 1);
1510	}
1511	else if ( ! is_removed) {
1512	if(orig_ob->env!=NULL)
1513	sub_weight (orig_ob->env,orig_ob->weight*nr);
1514	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1515	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1516	LOG(llevDebug,
1517	"Error, Tried to split object whose map is not in memory.\n");
1518	return NULL;
1519	}
1520	}
1521	newob->nrof=nr;
1522		1597
		1598	if (!items // testing !items ensures we can drop at least one item
		1599	|| (items < m->max_items
		1600	&& ms.volume () < m->max_volume))
1523	return newob;	1601	return true;
1524	}
1525		1602
		1603	if (originator && originator->is_player ())
		1604	originator->contr->failmsg (format (
		1605	"No matter how hard you try, you just cannot put the %s here H<Try to remove some items from the floor first.>",
		1606	query_name ()
		1607	));
		1608
		1609	return false;
		1610	}
		1611
1526	/*	1612	/*
1527	* decrease_ob_nr(object, number) decreases a specified number from	1613	* decrease(object, number) decreases a specified number from
1528	* the amount of an object. If the amount reaches 0, the object	1614	* the amount of an object. If the amount reaches 0, the object
1529	* is subsequently removed and freed.	1615	* is subsequently removed and freed.
1530	*	1616	*
1531	* Return value: 'op' if something is left, NULL if the amount reached 0	1617	* Return value: 'op' if something is left, NULL if the amount reached 0
1532	*/	1618	*/
1533		1619	bool
1534	object *decrease_ob_nr (object *op, uint32 i)	1620	object::decrease (sint32 nr)
1535	{	1621	{
1536	object *tmp;	1622	if (!nr)
1537	player *pl;	1623	return true;
1538		1624
1539	if (i == 0) /* objects with op->nrof require this check */	1625	nr = min (nr, nrof);
		1626
		1627	if (nrof > nr)
		1628	{
		1629	nrof -= nr;
		1630	adjust_weight (env, -weight * max (1, nr)); // carrying == 0
		1631
		1632	if (object *pl = visible_to ())
		1633	esrv_update_item (UPD_NROF, pl, this);
		1634
		1635	return true;
		1636	}
		1637	else
		1638	{
		1639	destroy ();
		1640	return false;
		1641	}
		1642	}
		1643
		1644	/*
		1645	* split(ob,nr) splits up ob into two parts. The part which
		1646	* is returned contains nr objects, and the remaining parts contains
		1647	* the rest (or is removed and returned if that number is 0).
		1648	* On failure, NULL is returned.
		1649	*/
		1650	object *
		1651	object::split (sint32 nr)
		1652	{
		1653	int have = number_of ();
		1654
		1655	if (have < nr)
		1656	return 0;
		1657	else if (have == nr)
		1658	{
		1659	remove ();
		1660	return this;
		1661	}
		1662	else
		1663	{
		1664	decrease (nr);
		1665
		1666	object *op = deep_clone ();
		1667	op->nrof = nr;
1540	return op;	1668	return op;
1541
1542	if (i > op->nrof)
1543	i = op->nrof;
1544
1545	if (QUERY_FLAG (op, FLAG_REMOVED))
1546	{	1669	}
1547	op->nrof -= i;	1670	}
		1671
		1672	object *
		1673	insert_ob_in_ob (object *op, object *where)
		1674	{
		1675	if (!where)
1548	}	1676	{
1549	else if (op->env != NULL)	1677	char *dump = dump_object (op);
1550	{	1678	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1551	/* is this object in the players inventory, or sub container	1679	free (dump);
1552	* therein?
1553	*/
1554	tmp = is_player_inv (op->env);
1555	/* nope. Is this a container the player has opened?
1556	* If so, set tmp to that player.
1557	* IMO, searching through all the players will mostly
1558	* likely be quicker than following op->env to the map,
1559	* and then searching the map for a player.
1560	*/
1561	if (!tmp) {
1562	for (pl=first_player; pl; pl=pl->next)
1563	if (pl->ob->container == op->env) break;
1564	if (pl) tmp=pl->ob;
1565	else tmp=NULL;
1566	}
1567
1568	if (i < op->nrof) {
1569	sub_weight (op->env, op->weight * i);
1570	op->nrof -= i;
1571	if (tmp) {
1572	esrv_send_item(tmp, op);
1573	}
1574	} else {
1575	remove_ob (op);
1576	op->nrof = 0;
1577	if (tmp) {
1578	esrv_del_item(tmp->contr, op->count);
1579	}
1580	}
1581	}
1582	else
1583	{
1584	object *above = op->above;
1585
1586	if (i < op->nrof) {
1587	op->nrof -= i;
1588	} else {
1589	remove_ob (op);
1590	op->nrof = 0;
1591	}
1592	/* Since we just removed op, op->above is null */
1593	for (tmp = above; tmp != NULL; tmp = tmp->above)
1594	if (tmp->type == PLAYER) {
1595	if (op->nrof)
1596	esrv_send_item(tmp, op);
1597	else
1598	esrv_del_item(tmp->contr, op->count);
1599	}
1600	}
1601
1602	if (op->nrof) {
1603	return op;	1680	return op;
1604	} else {	1681	}
1605	free_object (op);	1682
1606	return NULL;	1683	if (where->head_ () != where)
1607	}	1684	{
1608	}	1685	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1609		1686	where = where->head;
1610	/*
1611	* add_weight(object, weight) adds the specified weight to an object,
1612	* and also updates how much the environment(s) is/are carrying.
1613	*/
1614
1615	void add_weight (object *op, signed long weight) {
1616	while (op!=NULL) {
1617	if (op->type == CONTAINER) {
1618	weight=(signed long)(weight*(100-op->stats.Str)/100);
1619	}
1620	op->carrying+=weight;
1621	op=op->env;
1622	}	1687	}
1623	}
1624		1688
		1689	return where->insert (op);
		1690	}
		1691
1625	/*	1692	/*
1626	* insert_ob_in_ob(op,environment):	1693	* env->insert (op)
1627	* This function inserts the object op in the linked list	1694	* This function inserts the object op in the linked list
1628	* inside the object environment.	1695	* inside the object environment.
1629	*	1696	*
1630	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1631	* the inventory at the last position or next to other objects of the same
1632	* type.
1633	* Frank: Now sorted by type, archetype and magic!
1634	*
1635	* The function returns now pointer to inserted item, and return value can	1697	* The function returns now pointer to inserted item, and return value can
1636	* be != op, if items are merged. -Tero	1698	* be != op, if items are merged. -Tero
1637	*/	1699	*/
1638		1700	object *
1639	object *insert_ob_in_ob(object *op,object *where) {	1701	object::insert (object *op)
1640	object *tmp, *otmp;	1702	{
1641
1642	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1643	dump_object(op);
1644	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1645	return op;
1646	}
1647	if(where==NULL) {
1648	dump_object(op);
1649	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1650	return op;
1651	}
1652	if (where->head) {
1653	LOG(llevDebug,
1654	"Warning: Tried to insert object wrong part of multipart object.\n");
1655	where = where->head;
1656	}
1657	if (op->more) {	1703	if (op->more)
		1704	{
1658	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1705	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1659	&op->name, op->count);
1660	return op;	1706	return op;
1661	}	1707	}
1662	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1708
1663	CLEAR_FLAG(op, FLAG_REMOVED);	1709	op->remove ();
		1710
		1711	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1712
1664	if(op->nrof) {	1713	if (op->nrof)
1665	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1714	for (object *tmp = inv; tmp; tmp = tmp->below)
1666	if ( CAN_MERGE(tmp,op) ) {	1715	if (object::can_merge (tmp, op))
		1716	{
1667	/* return the original object and remove inserted object	1717	/* return the original object and remove inserted object
1668	(client needs the original object) */	1718	(client needs the original object) */
1669	tmp->nrof += op->nrof;	1719	tmp->nrof += op->nrof;
1670	/* Weight handling gets pretty funky. Since we are adding to	1720
1671	* tmp->nrof, we need to increase the weight.	1721	if (object *pl = tmp->visible_to ())
1672	*/	1722	esrv_update_item (UPD_NROF, pl, tmp);
1673	add_weight (where, op->weight*op->nrof);	1723
1674	SET_FLAG(op, FLAG_REMOVED);	1724	adjust_weight (this, op->total_weight ());
1675	free_object(op); /* free the inserted object */	1725
		1726	op->destroy ();
1676	op = tmp;	1727	op = tmp;
1677	remove_ob (op); /* and fix old object's links */	1728	goto inserted;
1678	CLEAR_FLAG(op, FLAG_REMOVED);
1679	break;
1680	}	1729	}
1681		1730
1682	/* I assume combined objects have no inventory	1731	op->owner = 0; // it's his/hers now. period.
1683	* We add the weight - this object could have just been removed	1732	op->map = 0;
1684	* (if it was possible to merge). calling remove_ob will subtract	1733	op->x = 0;
1685	* the weight, so we need to add it in again, since we actually do	1734	op->y = 0;
1686	* the linking below
1687	*/
1688	add_weight (where, op->weight*op->nrof);
1689	} else
1690	add_weight (where, (op->weight+op->carrying));
1691		1735
1692	otmp=is_player_inv(where);
1693	if (otmp&&otmp->contr!=NULL) {
1694	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1695	fix_player(otmp);
1696	}
1697
1698	op->map=NULL;
1699	op->env=where;
1700	op->above=NULL;	1736	op->above = 0;
1701	op->below=NULL;	1737	op->below = inv;
1702	op->x=0,op->y=0;	1738	op->env = this;
1703		1739
		1740	if (inv)
		1741	inv->above = op;
		1742
		1743	inv = op;
		1744
		1745	op->flag [FLAG_REMOVED] = 0;
		1746
		1747	if (object *pl = op->visible_to ())
		1748	esrv_send_item (pl, op);
		1749
		1750	adjust_weight (this, op->total_weight ());
		1751
		1752	inserted:
1704	/* reset the light list and los of the players on the map */	1753	/* reset the light list and los of the players on the map */
1705	if((op->glow_radius!=0)&&where->map)	1754	if (op->glow_radius && is_on_map ())
1706	{	1755	{
1707	#ifdef DEBUG_LIGHTS	1756	update_stats ();
1708	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1757	update_all_los (map, x, y);
1709	op->name);
1710	#endif /* DEBUG_LIGHTS */
1711	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1712	}	1758	}
		1759	else if (is_player ())
		1760	// if this is a player's inventory, update stats
		1761	contr->queue_stats_update ();
1713		1762
1714	/* Client has no idea of ordering so lets not bother ordering it here.	1763	INVOKE_OBJECT (INSERT, this);
1715	* It sure simplifies this function...	1764
1716	*/
1717	if (where->inv==NULL)
1718	where->inv=op;
1719	else {
1720	op->below = where->inv;
1721	op->below->above = op;
1722	where->inv = op;
1723	}
1724	return op;	1765	return op;
1725	}	1766	}
1726		1767
1727	/*	1768	/*
1728	* Checks if any objects has a move_type that matches objects	1769	* Checks if any objects has a move_type that matches objects
…		…
1742	*	1783	*
1743	* MSW 2001-07-08: Check all objects on space, not just those below	1784	* MSW 2001-07-08: Check all objects on space, not just those below
1744	* object being inserted. insert_ob_in_map may not put new objects	1785	* object being inserted. insert_ob_in_map may not put new objects
1745	* on top.	1786	* on top.
1746	*/	1787	*/
1747		1788	int
1748	int check_move_on (object *op, object *originator)	1789	check_move_on (object *op, object *originator)
1749	{	1790	{
		1791	if (QUERY_FLAG (op, FLAG_NO_APPLY))
		1792	return 0;
		1793
1750	object *tmp;	1794	object *tmp;
1751	tag_t tag;
1752	mapstruct *m=op->map;	1795	maptile *m = op->map;
1753	int x=op->x, y=op->y;	1796	int x = op->x, y = op->y;
1754	MoveType move_on, move_slow, move_block;
1755		1797
1756	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1798	mapspace &ms = m->at (x, y);
1757	return 0;
1758		1799
1759	tag = op->count;	1800	ms.update ();
1760		1801
1761	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1802	MoveType move_on = ms.move_on;
1762	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1803	MoveType move_slow = ms.move_slow;
1763	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1804	MoveType move_block = ms.move_block;
1764		1805
1765	/* if nothing on this space will slow op down or be applied,	1806	/* if nothing on this space will slow op down or be applied,
1766	* no need to do checking below. have to make sure move_type	1807	* no need to do checking below. have to make sure move_type
1767	* is set, as lots of objects don't have it set - we treat that	1808	* is set, as lots of objects don't have it set - we treat that
1768	* as walking.	1809	* as walking.
1769	*/	1810	*/
1770	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1811	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1771	return 0;	1812	return 0;
1772		1813
1773	/* This is basically inverse logic of that below - basically,	1814	/* This is basically inverse logic of that below - basically,
1774	* if the object can avoid the move on or slow move, they do so,	1815	* if the object can avoid the move on or slow move, they do so,
1775	* but can't do it if the alternate movement they are using is	1816	* but can't do it if the alternate movement they are using is
1776	* blocked. Logic on this seems confusing, but does seem correct.	1817	* blocked. Logic on this seems confusing, but does seem correct.
1777	*/	1818	*/
1778	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1819	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1779	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1820	return 0;
1780		1821
1781	/* The objects have to be checked from top to bottom.	1822	/* The objects have to be checked from top to bottom.
1782	* Hence, we first go to the top:	1823	* Hence, we first go to the top:
1783	*/	1824	*/
1784		1825	for (object *next, *tmp = ms.top; tmp; tmp = next)
1785	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
1786	tmp->above!=NULL; tmp=tmp->above) {
1787	/* Trim the search when we find the first other spell effect
1788	* this helps performance so that if a space has 50 spell objects,
1789	* we don't need to check all of them.
1790	*/
1791	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
1792	}	1826	{
1793	for(;tmp!=NULL; tmp=tmp->below) {	1827	next = tmp->below;
		1828
		1829	if (tmp == op)
1794	if (tmp == op) continue; /* Can't apply yourself */	1830	continue; /* Can't apply yourself */
1795		1831
1796	/* Check to see if one of the movement types should be slowed down.	1832	/* Check to see if one of the movement types should be slowed down.
1797	* Second check makes sure that the movement types not being slowed	1833	* Second check makes sure that the movement types not being slowed
1798	* (~slow_move) is not blocked on this space - just because the	1834	* (~slow_move) is not blocked on this space - just because the
1799	* space doesn't slow down swimming (for example), if you can't actually	1835	* space doesn't slow down swimming (for example), if you can't actually
1800	* swim on that space, can't use it to avoid the penalty.	1836	* swim on that space, can't use it to avoid the penalty.
1801	*/	1837	*/
1802	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1838	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1839	{
1803	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1840	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1804	((op->move_type & tmp->move_slow) &&
1805	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1841	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
1806		1842	{
1807	float diff;
1808
1809	diff = tmp->move_slow_penalty*FABS(op->speed);	1843	float diff = tmp->move_slow_penalty * fabs (op->speed);
1810	if (op->type == PLAYER) {	1844
		1845	if (op->is_player ())
1811	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1846	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
1812	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1847	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
1813	diff /= 4.0;	1848	diff /= 4.0;
1814	}	1849
1815	}
1816	op->speed_left -= diff;	1850	op->speed_left -= diff;
1817	}	1851	}
1818	}	1852	}
1819		1853
1820	/* Basically same logic as above, except now for actual apply. */	1854	/* Basically same logic as above, except now for actual apply. */
1821	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1855	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1822	((op->move_type & tmp->move_on) &&
1823	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1856	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1824		1857	{
1825	move_apply(tmp, op, originator);	1858	move_apply (tmp, op, originator);
		1859
1826	if (was_destroyed (op, tag))	1860	if (op->destroyed ())
1827	return 1;	1861	return 1;
1828		1862
1829	/* what the person/creature stepped onto has moved the object	1863	/* what the person/creature stepped onto has moved the object
1830	* someplace new. Don't process any further - if we did,	1864	* someplace new. Don't process any further - if we did,
1831	* have a feeling strange problems would result.	1865	* have a feeling strange problems would result.
1832	*/	1866	*/
1833	if (op->map != m || op->x != x || op->y != y) return 0;	1867	if (op->map != m || op->x != x || op->y != y)
		1868	return 0;
1834	}	1869	}
1835	}	1870	}
		1871
1836	return 0;	1872	return 0;
1837	}	1873	}
1838		1874
1839	/*	1875	/*
1840	* present_arch(arch, map, x, y) searches for any objects with	1876	* present_arch(arch, map, x, y) searches for any objects with
1841	* a matching archetype at the given map and coordinates.	1877	* a matching archetype at the given map and coordinates.
1842	* The first matching object is returned, or NULL if none.	1878	* The first matching object is returned, or NULL if none.
1843	*/	1879	*/
1844		1880	object *
1845	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1881	present_arch (const archetype *at, maptile *m, int x, int y)
1846	object *tmp;	1882	{
1847	if(m==NULL || out_of_map(m,x,y)) {	1883	if (!m || out_of_map (m, x, y))
		1884	{
1848	LOG(llevError,"Present_arch called outside map.\n");	1885	LOG (llevError, "Present_arch called outside map.\n");
1849	return NULL;	1886	return NULL;
1850	}	1887	}
1851	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1888
1852	if(tmp->arch == at)	1889	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1890	if (tmp->arch->archname == at->archname)
1853	return tmp;	1891	return tmp;
		1892
1854	return NULL;	1893	return NULL;
1855	}	1894	}
1856		1895
1857	/*	1896	/*
1858	* present(type, map, x, y) searches for any objects with	1897	* present(type, map, x, y) searches for any objects with
1859	* a matching type variable at the given map and coordinates.	1898	* a matching type variable at the given map and coordinates.
1860	* The first matching object is returned, or NULL if none.	1899	* The first matching object is returned, or NULL if none.
1861	*/	1900	*/
1862		1901	object *
1863	object *present(unsigned char type,mapstruct *m, int x,int y) {	1902	present (unsigned char type, maptile *m, int x, int y)
1864	object *tmp;	1903	{
1865	if(out_of_map(m,x,y)) {	1904	if (out_of_map (m, x, y))
		1905	{
1866	LOG(llevError,"Present called outside map.\n");	1906	LOG (llevError, "Present called outside map.\n");
1867	return NULL;	1907	return NULL;
1868	}	1908	}
1869	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1909
		1910	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1870	if(tmp->type==type)	1911	if (tmp->type == type)
1871	return tmp;	1912	return tmp;
		1913
1872	return NULL;	1914	return NULL;
1873	}	1915	}
1874		1916
1875	/*	1917	/*
1876	* present_in_ob(type, object) searches for any objects with	1918	* present_in_ob(type, object) searches for any objects with
1877	* a matching type variable in the inventory of the given object.	1919	* a matching type variable in the inventory of the given object.
1878	* The first matching object is returned, or NULL if none.	1920	* The first matching object is returned, or NULL if none.
1879	*/	1921	*/
1880		1922	object *
1881	object *present_in_ob(unsigned char type, const object *op) {	1923	present_in_ob (unsigned char type, const object *op)
1882	object *tmp;	1924	{
1883	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1925	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1884	if(tmp->type==type)	1926	if (tmp->type == type)
1885	return tmp;	1927	return tmp;
		1928
1886	return NULL;	1929	return NULL;
1887	}	1930	}
1888		1931
1889	/*	1932	/*
1890	* present_in_ob (type, str, object) searches for any objects with	1933	* present_in_ob (type, str, object) searches for any objects with
…		…
1898	* str is the string to match against. Note that we match against	1941	* str is the string to match against. Note that we match against
1899	* the object name, not the archetype name. this is so that the	1942	* the object name, not the archetype name. this is so that the
1900	* spell code can use one object type (force), but change it's name	1943	* spell code can use one object type (force), but change it's name
1901	* to be unique.	1944	* to be unique.
1902	*/	1945	*/
1903		1946	object *
1904	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1947	present_in_ob_by_name (int type, const char *str, const object *op)
1905	object *tmp;	1948	{
1906
1907	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1949	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1908	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1950	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1909	return tmp;	1951	return tmp;
1910	}	1952
1911	return NULL;	1953	return 0;
1912	}	1954	}
1913		1955
1914	/*	1956	/*
1915	* present_arch_in_ob(archetype, object) searches for any objects with	1957	* present_arch_in_ob(archetype, object) searches for any objects with
1916	* a matching archetype in the inventory of the given object.	1958	* a matching archetype in the inventory of the given object.
1917	* The first matching object is returned, or NULL if none.	1959	* The first matching object is returned, or NULL if none.
1918	*/	1960	*/
1919		1961	object *
1920	object *present_arch_in_ob(const archetype *at, const object *op) {	1962	present_arch_in_ob (const archetype *at, const object *op)
1921	object *tmp;	1963	{
1922	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1964	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1923	if( tmp->arch == at)	1965	if (tmp->arch->archname == at->archname)
1924	return tmp;	1966	return tmp;
		1967
1925	return NULL;	1968	return NULL;
1926	}	1969	}
1927		1970
1928	/*	1971	/*
1929	* activate recursively a flag on an object inventory	1972	* activate recursively a flag on an object inventory
1930	*/	1973	*/
		1974	void
1931	void flag_inv(object*op, int flag){	1975	flag_inv (object *op, int flag)
1932	object *tmp;	1976	{
1933	if(op->inv)
1934	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1977	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1978	{
1935	SET_FLAG(tmp, flag);	1979	SET_FLAG (tmp, flag);
1936	flag_inv(tmp,flag);	1980	flag_inv (tmp, flag);
1937	}	1981	}
		1982	}
		1983
1938	}/*	1984	/*
1939	* desactivate recursively a flag on an object inventory	1985	* deactivate recursively a flag on an object inventory
1940	*/	1986	*/
		1987	void
1941	void unflag_inv(object*op, int flag){	1988	unflag_inv (object *op, int flag)
1942	object *tmp;	1989	{
1943	if(op->inv)
1944	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1990	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1991	{
1945	CLEAR_FLAG(tmp, flag);	1992	CLEAR_FLAG (tmp, flag);
1946	unflag_inv(tmp,flag);	1993	unflag_inv (tmp, flag);
1947	}	1994	}
1948	}
1949
1950	/*
1951	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1952	* all it's inventory (recursively).
1953	* If checksums are used, a player will get set_cheat called for
1954	* him/her-self and all object carried by a call to this function.
1955	*/
1956
1957	void set_cheat(object *op) {
1958	SET_FLAG(op, FLAG_WAS_WIZ);
1959	flag_inv(op, FLAG_WAS_WIZ);
1960	}	1995	}
1961		1996
1962	/*	1997	/*
1963	* find_free_spot(object, map, x, y, start, stop) will search for	1998	* find_free_spot(object, map, x, y, start, stop) will search for
1964	* a spot at the given map and coordinates which will be able to contain	1999	* a spot at the given map and coordinates which will be able to contain
…		…
1966	* to search (see the freearr_x/y[] definition).	2001	* to search (see the freearr_x/y[] definition).
1967	* It returns a random choice among the alternatives found.	2002	* It returns a random choice among the alternatives found.
1968	* start and stop are where to start relative to the free_arr array (1,9	2003	* start and stop are where to start relative to the free_arr array (1,9
1969	* does all 4 immediate directions). This returns the index into the	2004	* does all 4 immediate directions). This returns the index into the
1970	* array of the free spot, -1 if no spot available (dir 0 = x,y)	2005	* array of the free spot, -1 if no spot available (dir 0 = x,y)
1971	* Note - this only checks to see if there is space for the head of the
1972	* object - if it is a multispace object, this should be called for all
1973	* pieces.
1974	* Note2: This function does correctly handle tiled maps, but does not	2006	* Note: This function does correctly handle tiled maps, but does not
1975	* inform the caller. However, insert_ob_in_map will update as	2007	* inform the caller. However, insert_ob_in_map will update as
1976	* necessary, so the caller shouldn't need to do any special work.	2008	* necessary, so the caller shouldn't need to do any special work.
1977	* Note - updated to take an object instead of archetype - this is necessary	2009	* Note - updated to take an object instead of archetype - this is necessary
1978	* because arch_blocked (now ob_blocked) needs to know the movement type	2010	* because arch_blocked (now ob_blocked) needs to know the movement type
1979	* to know if the space in question will block the object. We can't use	2011	* to know if the space in question will block the object. We can't use
1980	* the archetype because that isn't correct if the monster has been	2012	* the archetype because that isn't correct if the monster has been
1981	* customized, changed states, etc.	2013	* customized, changed states, etc.
1982	*/	2014	*/
1983		2015	int
1984	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2016	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2017	{
		2018	int altern[SIZEOFFREE];
1985	int i,index=0, flag;	2019	int index = 0, flag;
1986	static int altern[SIZEOFFREE];
1987		2020
1988	for(i=start;i<stop;i++) {	2021	for (int i = start; i < stop; i++)
1989	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2022	{
1990	if(!flag)	2023	mapxy pos (m, x, y); pos.move (i);
		2024
		2025	if (!pos.normalise ())
		2026	continue;
		2027
		2028	mapspace &ms = *pos;
		2029
		2030	if (ms.flags () & P_IS_ALIVE)
		2031	continue;
		2032
		2033	/* However, often
		2034	* ob doesn't have any move type (when used to place exits)
		2035	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2036	*/
		2037	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2038	{
1991	altern[index++]=i;	2039	altern [index++] = i;
		2040	continue;
		2041	}
1992		2042
1993	/* Basically, if we find a wall on a space, we cut down the search size.	2043	/* Basically, if we find a wall on a space, we cut down the search size.
1994	* In this way, we won't return spaces that are on another side of a wall.	2044	* In this way, we won't return spaces that are on another side of a wall.
1995	* This mostly work, but it cuts down the search size in all directions -	2045	* This mostly work, but it cuts down the search size in all directions -
1996	* if the space being examined only has a wall to the north and empty	2046	* if the space being examined only has a wall to the north and empty
1997	* spaces in all the other directions, this will reduce the search space	2047	* spaces in all the other directions, this will reduce the search space
1998	* to only the spaces immediately surrounding the target area, and	2048	* to only the spaces immediately surrounding the target area, and
1999	* won't look 2 spaces south of the target space.	2049	* won't look 2 spaces south of the target space.
2000	*/	2050	*/
2001	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2051	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2052	{
2002	stop=maxfree[i];	2053	stop = maxfree[i];
2003	}	2054	continue;
2004	if(!index) return -1;	2055	}
2005	return altern[RANDOM()%index];
2006	}
2007		2056
		2057	/* Note it is intentional that we check ob - the movement type of the
		2058	* head of the object should correspond for the entire object.
		2059	*/
		2060	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2061	continue;
		2062
		2063	if (ob->blocked (pos.m, pos.x, pos.y))
		2064	continue;
		2065
		2066	altern [index++] = i;
		2067	}
		2068
		2069	if (!index)
		2070	return -1;
		2071
		2072	return altern [rndm (index)];
		2073	}
		2074
2008	/*	2075	/*
2009	* find_first_free_spot(archetype, mapstruct, x, y) works like	2076	* find_first_free_spot(archetype, maptile, x, y) works like
2010	* find_free_spot(), but it will search max number of squares.	2077	* find_free_spot(), but it will search max number of squares.
2011	* But it will return the first available spot, not a random choice.	2078	* But it will return the first available spot, not a random choice.
2012	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2079	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2013	*/	2080	*/
2014		2081	int
2015	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2082	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2016	int i;	2083	{
2017	for(i=0;i<SIZEOFFREE;i++) {	2084	for (int i = 0; i < SIZEOFFREE; i++)
2018	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2085	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2019	return i;	2086	return i;
2020	}	2087
2021	return -1;	2088	return -1;
2022	}	2089	}
2023		2090
2024	/*	2091	/*
2025	* The function permute(arr, begin, end) randomly reorders the array	2092	* The function permute(arr, begin, end) randomly reorders the array
2026	* arr[begin..end-1].	2093	* arr[begin..end-1].
		2094	* now uses a fisher-yates shuffle, old permute was broken
2027	*/	2095	*/
		2096	static void
2028	static void permute(int *arr, int begin, int end)	2097	permute (int *arr, int begin, int end)
2029	{	2098	{
2030	int i, j, tmp, len;	2099	arr += begin;
		2100	end -= begin;
2031		2101
2032	len = end-begin;	2102	while (--end)
2033	for(i = begin; i < end; i++)	2103	swap (arr [end], arr [rndm (end + 1)]);
2034	{
2035	j = begin+RANDOM()%len;
2036
2037	tmp = arr[i];
2038	arr[i] = arr[j];
2039	arr[j] = tmp;
2040	}
2041	}	2104	}
2042		2105
2043	/* new function to make monster searching more efficient, and effective!	2106	/* new function to make monster searching more efficient, and effective!
2044	* This basically returns a randomized array (in the passed pointer) of	2107	* This basically returns a randomized array (in the passed pointer) of
2045	* the spaces to find monsters. In this way, it won't always look for	2108	* the spaces to find monsters. In this way, it won't always look for
2046	* monsters to the north first. However, the size of the array passed	2109	* monsters to the north first. However, the size of the array passed
2047	* covers all the spaces, so within that size, all the spaces within	2110	* covers all the spaces, so within that size, all the spaces within
2048	* the 3x3 area will be searched, just not in a predictable order.	2111	* the 3x3 area will be searched, just not in a predictable order.
2049	*/	2112	*/
		2113	void
2050	void get_search_arr(int *search_arr)	2114	get_search_arr (int *search_arr)
2051	{	2115	{
2052	int i;	2116	int i;
2053		2117
2054	for(i = 0; i < SIZEOFFREE; i++)	2118	for (i = 0; i < SIZEOFFREE; i++)
2055	{
2056	search_arr[i] = i;	2119	search_arr[i] = i;
2057	}
2058		2120
2059	permute(search_arr, 1, SIZEOFFREE1+1);	2121	permute (search_arr, 1, SIZEOFFREE1 + 1);
2060	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2122	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2061	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2123	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2062	}	2124	}
2063		2125
2064	/*	2126	/*
2065	* find_dir(map, x, y, exclude) will search some close squares in the	2127	* find_dir(map, x, y, exclude) will search some close squares in the
2066	* given map at the given coordinates for live objects.	2128	* given map at the given coordinates for live objects.
…		…
2071	* Perhaps incorrectly, but I'm making the assumption that exclude	2133	* Perhaps incorrectly, but I'm making the assumption that exclude
2072	* is actually want is going to try and move there. We need this info	2134	* is actually want is going to try and move there. We need this info
2073	* because we have to know what movement the thing looking to move	2135	* because we have to know what movement the thing looking to move
2074	* there is capable of.	2136	* there is capable of.
2075	*/	2137	*/
2076		2138	int
2077	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2139	find_dir (maptile *m, int x, int y, object *exclude)
		2140	{
2078	int i,max=SIZEOFFREE, mflags;	2141	int max = SIZEOFFREE, mflags;
2079	sint16 nx, ny;
2080	object *tmp;
2081	mapstruct *mp;
2082	MoveType blocked, move_type;	2142	MoveType move_type;
2083		2143
2084	if (exclude && exclude->head) {	2144	if (exclude && exclude->head_ () != exclude)
		2145	{
2085	exclude = exclude->head;	2146	exclude = exclude->head;
2086	move_type = exclude->move_type;	2147	move_type = exclude->move_type;
2087	} else {	2148	}
		2149	else
		2150	{
2088	/* If we don't have anything, presume it can use all movement types. */	2151	/* If we don't have anything, presume it can use all movement types. */
2089	move_type=MOVE_ALL;	2152	move_type = MOVE_ALL;
		2153	}
		2154
		2155	for (int i = 1; i < max; i++)
2090	}	2156	{
		2157	mapxy pos (m, x, y);
		2158	pos.move (i);
2091		2159
2092	for(i=1;i<max;i++) {	2160	if (!pos.normalise ())
2093	mp = m;
2094	nx = x + freearr_x[i];	2161	max = maxfree[i];
2095	ny = y + freearr_y[i];	2162	else
		2163	{
		2164	mapspace &ms = *pos;
2096		2165
2097	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2166	if ((move_type & ms.move_block) == move_type)
2098	if (mflags & P_OUT_OF_MAP) {
2099	max = maxfree[i];	2167	max = maxfree [i];
2100	} else {
2101	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2102
2103	if ((move_type & blocked) == move_type) {
2104	max=maxfree[i];
2105	} else if (mflags & P_IS_ALIVE) {	2168	else if (ms.flags () & P_IS_ALIVE)
2106	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2169	{
2107	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2170	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2171	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2108	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2172	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2109	break;
2110	}
2111	}
2112	if(tmp) {
2113	return freedir[i];	2173	return freedir [i];
2114	}
2115	}	2174	}
2116	}	2175	}
2117	}	2176	}
		2177
2118	return 0;	2178	return 0;
2119	}	2179	}
2120		2180
2121	/*	2181	/*
2122	* distance(object 1, object 2) will return the square of the	2182	* distance(object 1, object 2) will return the square of the
2123	* distance between the two given objects.	2183	* distance between the two given objects.
2124	*/	2184	*/
2125		2185	int
2126	int distance(const object *ob1, const object *ob2) {	2186	distance (const object *ob1, const object *ob2)
2127	int i;	2187	{
2128	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2188	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2129	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2130	return i;
2131	}	2189	}
2132		2190
2133	/*	2191	/*
2134	* find_dir_2(delta-x,delta-y) will return a direction in which	2192	* find_dir_2(delta-x,delta-y) will return a direction in which
2135	* an object which has subtracted the x and y coordinates of another	2193	* an object which has subtracted the x and y coordinates of another
2136	* object, needs to travel toward it.	2194	* object, needs to travel toward it.
2137	*/	2195	*/
2138		2196	int
2139	int find_dir_2(int x, int y) {	2197	find_dir_2 (int x, int y)
		2198	{
2140	int q;	2199	int q;
2141		2200
2142	if(y)	2201	if (y)
2143	q=x*100/y;	2202	q = x * 100 / y;
2144	else if (x)	2203	else if (x)
2145	q= -300*x;	2204	q = -300 * x;
2146	else	2205	else
2147	return 0;	2206	return 0;
2148		2207
2149	if(y>0) {	2208	if (y > 0)
		2209	{
2150	if(q < -242)	2210	if (q < -242)
2151	return 3 ;	2211	return 3;
2152	if (q < -41)	2212	if (q < -41)
2153	return 2 ;	2213	return 2;
2154	if (q < 41)	2214	if (q < 41)
2155	return 1 ;	2215	return 1;
2156	if (q < 242)	2216	if (q < 242)
2157	return 8 ;	2217	return 8;
2158	return 7 ;	2218	return 7;
2159	}	2219	}
2160		2220
2161	if (q < -242)	2221	if (q < -242)
2162	return 7 ;	2222	return 7;
2163	if (q < -41)	2223	if (q < -41)
2164	return 6 ;	2224	return 6;
2165	if (q < 41)	2225	if (q < 41)
2166	return 5 ;	2226	return 5;
2167	if (q < 242)	2227	if (q < 242)
2168	return 4 ;	2228	return 4;
2169		2229
2170	return 3 ;	2230	return 3;
2171	}
2172
2173	/*
2174	* absdir(int): Returns a number between 1 and 8, which represent
2175	* the "absolute" direction of a number (it actually takes care of
2176	* "overflow" in previous calculations of a direction).
2177	*/
2178
2179	int absdir(int d) {
2180	while(d<1) d+=8;
2181	while(d>8) d-=8;
2182	return d;
2183	}	2231	}
2184		2232
2185	/*	2233	/*
2186	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2234	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2187	* between two directions (which are expected to be absolute (see absdir())	2235	* between two directions (which are expected to be absolute (see absdir())
2188	*/	2236	*/
2189		2237	int
2190	int dirdiff(int dir1, int dir2) {	2238	dirdiff (int dir1, int dir2)
		2239	{
2191	int d;	2240	int d;
		2241
2192	d = abs(dir1 - dir2);	2242	d = abs (dir1 - dir2);
2193	if(d>4)	2243	if (d > 4)
2194	d = 8 - d;	2244	d = 8 - d;
		2245
2195	return d;	2246	return d;
2196	}	2247	}
2197		2248
2198	/* peterm:	2249	/* peterm:
2199	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2250	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2202	* This basically means that if direction is 15, then it could either go	2253	* This basically means that if direction is 15, then it could either go
2203	* direction 4, 14, or 16 to get back to where we are.	2254	* direction 4, 14, or 16 to get back to where we are.
2204	* Moved from spell_util.c to object.c with the other related direction	2255	* Moved from spell_util.c to object.c with the other related direction
2205	* functions.	2256	* functions.
2206	*/	2257	*/
2207
2208	int reduction_dir[SIZEOFFREE][3] = {	2258	static const int reduction_dir[SIZEOFFREE][3] = {
2209	{0,0,0}, /* 0 */	2259	{0, 0, 0}, /* 0 */
2210	{0,0,0}, /* 1 */	2260	{0, 0, 0}, /* 1 */
2211	{0,0,0}, /* 2 */	2261	{0, 0, 0}, /* 2 */
2212	{0,0,0}, /* 3 */	2262	{0, 0, 0}, /* 3 */
2213	{0,0,0}, /* 4 */	2263	{0, 0, 0}, /* 4 */
2214	{0,0,0}, /* 5 */	2264	{0, 0, 0}, /* 5 */
2215	{0,0,0}, /* 6 */	2265	{0, 0, 0}, /* 6 */
2216	{0,0,0}, /* 7 */	2266	{0, 0, 0}, /* 7 */
2217	{0,0,0}, /* 8 */	2267	{0, 0, 0}, /* 8 */
2218	{8,1,2}, /* 9 */	2268	{8, 1, 2}, /* 9 */
2219	{1,2,-1}, /* 10 */	2269	{1, 2, -1}, /* 10 */
2220	{2,10,12}, /* 11 */	2270	{2, 10, 12}, /* 11 */
2221	{2,3,-1}, /* 12 */	2271	{2, 3, -1}, /* 12 */
2222	{2,3,4}, /* 13 */	2272	{2, 3, 4}, /* 13 */
2223	{3,4,-1}, /* 14 */	2273	{3, 4, -1}, /* 14 */
2224	{4,14,16}, /* 15 */	2274	{4, 14, 16}, /* 15 */
2225	{5,4,-1}, /* 16 */	2275	{5, 4, -1}, /* 16 */
2226	{4,5,6}, /* 17 */	2276	{4, 5, 6}, /* 17 */
2227	{6,5,-1}, /* 18 */	2277	{6, 5, -1}, /* 18 */
2228	{6,20,18}, /* 19 */	2278	{6, 20, 18}, /* 19 */
2229	{7,6,-1}, /* 20 */	2279	{7, 6, -1}, /* 20 */
2230	{6,7,8}, /* 21 */	2280	{6, 7, 8}, /* 21 */
2231	{7,8,-1}, /* 22 */	2281	{7, 8, -1}, /* 22 */
2232	{8,22,24}, /* 23 */	2282	{8, 22, 24}, /* 23 */
2233	{8,1,-1}, /* 24 */	2283	{8, 1, -1}, /* 24 */
2234	{24,9,10}, /* 25 */	2284	{24, 9, 10}, /* 25 */
2235	{9,10,-1}, /* 26 */	2285	{9, 10, -1}, /* 26 */
2236	{10,11,-1}, /* 27 */	2286	{10, 11, -1}, /* 27 */
2237	{27,11,29}, /* 28 */	2287	{27, 11, 29}, /* 28 */
2238	{11,12,-1}, /* 29 */	2288	{11, 12, -1}, /* 29 */
2239	{12,13,-1}, /* 30 */	2289	{12, 13, -1}, /* 30 */
2240	{12,13,14}, /* 31 */	2290	{12, 13, 14}, /* 31 */
2241	{13,14,-1}, /* 32 */	2291	{13, 14, -1}, /* 32 */
2242	{14,15,-1}, /* 33 */	2292	{14, 15, -1}, /* 33 */
2243	{33,15,35}, /* 34 */	2293	{33, 15, 35}, /* 34 */
2244	{16,15,-1}, /* 35 */	2294	{16, 15, -1}, /* 35 */
2245	{17,16,-1}, /* 36 */	2295	{17, 16, -1}, /* 36 */
2246	{18,17,16}, /* 37 */	2296	{18, 17, 16}, /* 37 */
2247	{18,17,-1}, /* 38 */	2297	{18, 17, -1}, /* 38 */
2248	{18,19,-1}, /* 39 */	2298	{18, 19, -1}, /* 39 */
2249	{41,19,39}, /* 40 */	2299	{41, 19, 39}, /* 40 */
2250	{19,20,-1}, /* 41 */	2300	{19, 20, -1}, /* 41 */
2251	{20,21,-1}, /* 42 */	2301	{20, 21, -1}, /* 42 */
2252	{20,21,22}, /* 43 */	2302	{20, 21, 22}, /* 43 */
2253	{21,22,-1}, /* 44 */	2303	{21, 22, -1}, /* 44 */
2254	{23,22,-1}, /* 45 */	2304	{23, 22, -1}, /* 45 */
2255	{45,47,23}, /* 46 */	2305	{45, 47, 23}, /* 46 */
2256	{23,24,-1}, /* 47 */	2306	{23, 24, -1}, /* 47 */
2257	{24,9,-1}}; /* 48 */	2307	{24, 9, -1}
		2308	}; /* 48 */
2258		2309
2259	/* Recursive routine to step back and see if we can	2310	/* Recursive routine to step back and see if we can
2260	* find a path to that monster that we found. If not,	2311	* find a path to that monster that we found. If not,
2261	* we don't bother going toward it. Returns 1 if we	2312	* we don't bother going toward it. Returns 1 if we
2262	* can see a direct way to get it	2313	* can see a direct way to get it
2263	* Modified to be map tile aware -.MSW	2314	* Modified to be map tile aware -.MSW
2264	*/	2315	*/
2265		2316	int
2266
2267	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2317	can_see_monsterP (maptile *m, int x, int y, int dir)
		2318	{
2268	sint16 dx, dy;	2319	sint16 dx, dy;
2269	int mflags;	2320	int mflags;
2270		2321
		2322	if (dir < 0)
2271	if(dir<0) return 0; /* exit condition: invalid direction */	2323	return 0; /* exit condition: invalid direction */
2272		2324
2273	dx = x + freearr_x[dir];	2325	dx = x + freearr_x[dir];
2274	dy = y + freearr_y[dir];	2326	dy = y + freearr_y[dir];
2275		2327
2276	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2328	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2277		2329
2278	/* This functional arguably was incorrect before - it was	2330	/* This functional arguably was incorrect before - it was
2279	* checking for P_WALL - that was basically seeing if	2331	* checking for P_WALL - that was basically seeing if
2280	* we could move to the monster - this is being more	2332	* we could move to the monster - this is being more
2281	* literal on if we can see it. To know if we can actually	2333	* literal on if we can see it. To know if we can actually
2282	* move to the monster, we'd need the monster passed in or	2334	* move to the monster, we'd need the monster passed in or
2283	* at least its move type.	2335	* at least its move type.
2284	*/	2336	*/
2285	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2337	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2338	return 0;
2286		2339
2287	/* yes, can see. */	2340	/* yes, can see. */
2288	if(dir < 9) return 1;	2341	if (dir < 9)
		2342	return 1;
		2343
2289	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2344	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2290	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2345	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2291	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2346	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2292	}	2347	}
2293		2348
2294
2295
2296	/*	2349	/*
2297	* can_pick(picker, item): finds out if an object is possible to be	2350	* can_pick(picker, item): finds out if an object is possible to be
2298	* picked up by the picker. Returnes 1 if it can be	2351	* picked up by the picker. Returnes 1 if it can be
2299	* picked up, otherwise 0.	2352	* picked up, otherwise 0.
2300	*	2353	*
2301	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2354	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2302	* core dumps if they do.	2355	* core dumps if they do.
2303	*	2356	*
2304	* Add a check so we can't pick up invisible objects (0.93.8)	2357	* Add a check so we can't pick up invisible objects (0.93.8)
2305	*/	2358	*/
2306		2359	int
2307	int can_pick(const object *who, const object *item) {	2360	can_pick (const object *who, const object *item)
		2361	{
2308	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2362	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2309	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2363	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2310	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2364	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2311	(who->type==PLAYER||item->weight<who->weight/3));
2312	}	2365	}
2313
2314		2366
2315	/*	2367	/*
2316	* create clone from object to another	2368	* create clone from object to another
2317	*/	2369	*/
2318	object *object_create_clone (object *asrc) {	2370	object *
2319	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2371	object::deep_clone ()
		2372	{
		2373	assert (("deep_clone called on non-head object", is_head ()));
2320		2374
2321	if(!asrc) return NULL;	2375	object *dst = clone ();
2322	src = asrc;
2323	if(src->head)
2324	src = src->head;
2325		2376
2326	prev = NULL;	2377	object *prev = dst;
2327	for(part = src; part; part = part->more) {	2378	for (object *part = this->more; part; part = part->more)
2328	tmp = get_object();	2379	{
2329	copy_object(part,tmp);	2380	object *tmp = part->clone ();
2330	tmp->x -= src->x;
2331	tmp->y -= src->y;
2332	if(!part->head) {
2333	dst = tmp;
2334	tmp->head = NULL;
2335	} else {
2336	tmp->head = dst;	2381	tmp->head = dst;
2337	}
2338	tmp->more = NULL;
2339	if(prev)
2340	prev->more = tmp;	2382	prev->more = tmp;
2341	prev = tmp;	2383	prev = tmp;
2342	}	2384	}
2343	/*** copy inventory ***/	2385
2344	for(item = src->inv; item; item = item->below) {	2386	for (object *item = inv; item; item = item->below)
2345	(void) insert_ob_in_ob(object_create_clone(item),dst);	2387	insert_ob_in_ob (item->deep_clone (), dst);
2346	}
2347		2388
2348	return dst;	2389	return dst;
2349	}
2350
2351	/* return true if the object was destroyed, 0 otherwise */
2352	int was_destroyed (const object *op, tag_t old_tag)
2353	{
2354	/* checking for FLAG_FREED isn't necessary, but makes this function more
2355	* robust */
2356	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2357	}
2358
2359	/* GROS - Creates an object using a string representing its content. */
2360	/* Basically, we save the content of the string to a temp file, then call */
2361	/* load_object on it. I admit it is a highly inefficient way to make things, */
2362	/* but it was simple to make and allows reusing the load_object function. */
2363	/* Remember not to use load_object_str in a time-critical situation. */
2364	/* Also remember that multiparts objects are not supported for now. */
2365
2366	object* load_object_str(const char *obstr)
2367	{
2368	object *op;
2369	char filename[MAX_BUF];
2370	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2371
2372	FILE *tempfile=fopen(filename,"w");
2373	if (tempfile == NULL)
2374	{
2375	LOG(llevError,"Error - Unable to access load object temp file\n");
2376	return NULL;
2377	};
2378	fprintf(tempfile,obstr);
2379	fclose(tempfile);
2380
2381	op=get_object();
2382
2383	object_thawer thawer (filename);
2384
2385	if (thawer)
2386	load_object(thawer,op,0);
2387
2388	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2389	CLEAR_FLAG(op,FLAG_REMOVED);
2390
2391	return op;
2392	}	2390	}
2393		2391
2394	/* This returns the first object in who's inventory that	2392	/* This returns the first object in who's inventory that
2395	* has the same type and subtype match.	2393	* has the same type and subtype match.
2396	* returns NULL if no match.	2394	* returns NULL if no match.
2397	*/	2395	*/
		2396	object *
2398	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2397	find_obj_by_type_subtype (const object *who, int type, int subtype)
2399	{	2398	{
2400	object *tmp;
2401
2402	for (tmp=who->inv; tmp; tmp=tmp->below)	2399	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2403	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2400	if (tmp->type == type && tmp->subtype == subtype)
		2401	return tmp;
2404		2402
2405	return NULL;	2403	return 0;
2406	}	2404	}
2407		2405
2408	/* If ob has a field named key, return the link from the list,	2406	shstr_tmp
2409	* otherwise return NULL.	2407	object::kv_get (shstr_tmp key) const
2410	*	2408	{
2411	* key must be a passed in shared string - otherwise, this won't	2409	for (key_value *kv = key_values; kv; kv = kv->next)
2412	* do the desired thing.	2410	if (kv->key == key)
2413	*/	2411	return kv->value;
2414	key_value * get_ob_key_link(const object * ob, const char * key) {	2412
2415	key_value * link;	2413	return shstr ();
		2414	}
		2415
		2416	void
		2417	object::kv_set (shstr_tmp key, shstr_tmp value)
		2418	{
		2419	for (key_value *kv = key_values; kv; kv = kv->next)
		2420	if (kv->key == key)
		2421	{
		2422	kv->value = value;
		2423	return;
		2424	}
		2425
		2426	key_value *kv = new key_value;
		2427
		2428	kv->next = key_values;
		2429	kv->key = key;
		2430	kv->value = value;
		2431
		2432	key_values = kv;
		2433	}
		2434
		2435	void
		2436	object::kv_del (shstr_tmp key)
		2437	{
		2438	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2439	if ((*kvp)->key == key)
		2440	{
		2441	key_value *kv = *kvp;
		2442	*kvp = (*kvp)->next;
		2443	delete kv;
		2444	return;
		2445	}
		2446	}
		2447
		2448	object::depth_iterator::depth_iterator (object *container)
		2449	: iterator_base (container)
		2450	{
		2451	while (item->inv)
		2452	item = item->inv;
		2453	}
		2454
		2455	void
		2456	object::depth_iterator::next ()
		2457	{
		2458	if (item->below)
2416		2459	{
2417	for (link = ob->key_values; link != NULL; link = link->next) {	2460	item = item->below;
2418	if (link->key == key) {	2461
2419	return link;	2462	while (item->inv)
		2463	item = item->inv;
		2464	}
		2465	else
		2466	item = item->env;
		2467	}
		2468
		2469	const char *
		2470	object::flag_desc (char *desc, int len) const
		2471	{
		2472	char *p = desc;
		2473	bool first = true;
		2474
		2475	*p = 0;
		2476
		2477	for (int i = 0; i < NUM_FLAGS; i++)
		2478	{
		2479	if (len <= 10) // magic constant!
		2480	{
		2481	snprintf (p, len, ",...");
		2482	break;
2420	}	2483	}
2421	}
2422
2423	return NULL;
2424	}
2425		2484
2426	/*	2485	if (flag [i])
2427	* Returns the value of op has an extra_field for key, or NULL.
2428	*
2429	* The argument doesn't need to be a shared string.
2430	*
2431	* The returned string is shared.
2432	*/
2433	const char * get_ob_key_value(const object * op, const char * const key) {
2434	key_value * link;
2435	const char * canonical_key;
2436
2437	canonical_key = shstr::find (key);
2438
2439	if (canonical_key == NULL) {
2440	/* 1. There being a field named key on any object
2441	* implies there'd be a shared string to find.
2442	* 2. Since there isn't, no object has this field.
2443	* 3. Therefore, *this* object doesn't have this field.
2444	*/	2486	{
2445	return NULL;	2487	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2446	}	2488	len -= cnt;
2447		2489	p += cnt;
2448	/* This is copied from get_ob_key_link() above -	2490	first = false;
2449	* only 4 lines, and saves the function call overhead.
2450	*/
2451	for (link = op->key_values; link != NULL; link = link->next) {
2452	if (link->key == canonical_key) {
2453	return link->value;
2454	}	2491	}
2455	}	2492	}
		2493
		2494	return desc;
		2495	}
		2496
		2497	// return a suitable string describing an object in enough detail to find it
		2498	const char *
		2499	object::debug_desc (char *info) const
		2500	{
		2501	char flagdesc[512];
		2502	char info2[256 * 4];
		2503	char *p = info;
		2504
		2505	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2506	count,
		2507	uuid.c_str (),
		2508	&name,
		2509	title ? ",title:\"" : "",
		2510	title ? (const char *)title : "",
		2511	title ? "\"" : "",
		2512	flag_desc (flagdesc, 512), type);
		2513
		2514	if (!flag[FLAG_REMOVED] && env)
		2515	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2516
		2517	if (map)
		2518	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2519
		2520	return info;
		2521	}
		2522
		2523	const char *
		2524	object::debug_desc () const
		2525	{
		2526	static char info[3][256 * 4];
		2527	static int info_idx;
		2528
		2529	return debug_desc (info [++info_idx % 3]);
		2530	}
		2531
		2532	struct region *
		2533	object::region () const
		2534	{
		2535	return map ? map->region (x, y)
		2536	: region::default_region ();
		2537	}
		2538
		2539	void
		2540	object::open_container (object *new_container)
		2541	{
		2542	if (container == new_container)
2456	return NULL;	2543	return;
2457	}
2458		2544
		2545	object *old_container = container;
2459		2546
2460	/*	2547	if (old_container)
2461	* Updates the canonical_key in op to value.
2462	*
2463	* canonical_key is a shared string (value doesn't have to be).
2464	*
2465	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2466	* keys.
2467	*
2468	* Returns TRUE on success.
2469	*/
2470	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {
2471	key_value * field = NULL, *last=NULL;
2472		2548	{
2473	for (field=op->key_values; field != NULL; field=field->next) {	2549	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2474	if (field->key != canonical_key) {	2550	return;
2475	last = field;	2551
2476	continue;	2552	#if 0
		2553	// remove the "Close old_container" object.
		2554	if (object *closer = old_container->inv)
		2555	if (closer->type == CLOSE_CON)
		2556	closer->destroy ();
		2557	#endif
		2558
		2559	// make sure the container is available
		2560	esrv_send_item (this, old_container);
		2561
		2562	old_container->flag [FLAG_APPLIED] = false;
		2563	container = 0;
		2564
		2565	// client needs item update to make it work, client bug requires this to be separate
		2566	esrv_update_item (UPD_FLAGS, this, old_container);
		2567
		2568	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2569	play_sound (sound_find ("chest_close"));
		2570	}
		2571
		2572	if (new_container)
		2573	{
		2574	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2575	return;
		2576
		2577	// TODO: this does not seem to serve any purpose anymore?
		2578	#if 0
		2579	// insert the "Close Container" object.
		2580	if (archetype *closer = new_container->other_arch)
		2581	{
		2582	object *closer = new_container->other_arch->instance ();
		2583	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2584	new_container->insert (closer);
2477	}	2585	}
		2586	#endif
		2587
		2588	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2589
		2590	// make sure the container is available, client bug requires this to be separate
		2591	esrv_send_item (this, new_container);
		2592
		2593	new_container->flag [FLAG_APPLIED] = true;
		2594	container = new_container;
		2595
		2596	// client needs flag change
		2597	esrv_update_item (UPD_FLAGS, this, new_container);
		2598	esrv_send_inventory (this, new_container);
		2599	play_sound (sound_find ("chest_open"));
2478		2600	}
2479	if (value)	2601	// else if (!old_container->env && contr && contr->ns)
2480	field->value = value;	2602	// contr->ns->floorbox_reset ();
2481	else {	2603	}
2482	/* Basically, if the archetype has this key set,
2483	* we need to store the null value so when we save
2484	* it, we save the empty value so that when we load,
2485	* we get this value back again.
2486	*/
2487	if (get_ob_key_link (&op->arch->clone, canonical_key))
2488	field->value = 0;
2489	else
2490	{
2491	if (last) last->next = field->next;
2492	else op->key_values = field->next;
2493		2604
2494	delete field;	2605	object *
2495	}	2606	object::force_find (shstr_tmp name)
2496	}	2607	{
2497	return TRUE;	2608	/* cycle through his inventory to look for the MARK we want to
2498	}	2609	* place
2499	/* IF we get here, key doesn't exist */	2610	*/
		2611	for (object *tmp = inv; tmp; tmp = tmp->below)
		2612	if (tmp->type == FORCE && tmp->slaying == name)
		2613	return splay (tmp);
2500		2614
2501	/* No field, we'll have to add it. */	2615	return 0;
		2616	}
		2617
		2618	//-GPL
		2619
		2620	void
		2621	object::force_set_timer (int duration)
		2622	{
		2623	this->duration = 1;
		2624	this->speed_left = -1.f;
		2625
		2626	this->set_speed (duration ? 1.f / duration : 0.f);
		2627	}
		2628
		2629	object *
		2630	object::force_add (shstr_tmp name, int duration)
		2631	{
		2632	if (object *force = force_find (name))
		2633	force->destroy ();
		2634
		2635	object *force = get_archetype (FORCE_NAME);
		2636
		2637	force->slaying = name;
		2638	force->force_set_timer (duration);
		2639	force->flag [FLAG_APPLIED] = true;
		2640
		2641	return insert (force);
		2642	}
		2643
		2644	void
		2645	object::play_sound (faceidx sound) const
		2646	{
		2647	if (!sound)
		2648	return;
		2649
		2650	if (is_on_map ())
		2651	map->play_sound (sound, x, y);
		2652	else if (object *pl = in_player ())
		2653	pl->contr->play_sound (sound);
		2654	}
		2655
		2656	void
		2657	object::say_msg (const char *msg) const
		2658	{
		2659	if (is_on_map ())
		2660	map->say_msg (msg, x, y);
		2661	else if (object *pl = in_player ())
		2662	pl->contr->play_sound (sound);
		2663	}
		2664
		2665	void
		2666	object::make_noise ()
		2667	{
		2668	// we do not model noise in the map, so instead put
		2669	// a temporary light into the noise source
		2670	// could use the map instead, but that's less reliable for our
		2671	// goal, which is to make invisibility a bit harder to exploit
		2672
		2673	// currently only works sensibly for players
		2674	if (!is_player ())
		2675	return;
		2676
		2677	// find old force, or create new one
		2678	object *force = force_find (shstr_noise_force);
		2679
		2680	if (force)
		2681	force->speed_left = -1.f; // patch old speed up
		2682	else
2502		2683	{
2503	if (!add_key) {	2684	force = archetype::get (shstr_noise_force);
2504	return FALSE;	2685
2505	}	2686	force->slaying = shstr_noise_force;
2506	/* There isn't any good reason to store a null	2687	force->stats.food = 1;
2507	* value in the key/value list. If the archetype has	2688	force->speed_left = -1.f;
2508	* this key, then we should also have it, so shouldn't	2689
2509	* be here. If user wants to store empty strings,	2690	force->set_speed (1.f / 4.f);
2510	* should pass in ""	2691	force->flag [FLAG_IS_USED_UP] = true;
2511	*/	2692	force->flag [FLAG_APPLIED] = true;
2512	if (value == NULL) return TRUE;	2693
		2694	insert (force);
2513		2695	}
2514	field = new key_value;
2515
2516	field->key = canonical_key;
2517	field->value = value;
2518	/* Usual prepend-addition. */
2519	field->next = op->key_values;
2520	op->key_values = field;
2521
2522	return TRUE;
2523	}	2696	}
2524		2697
2525	/*
2526	* Updates the key in op to value.
2527	*
2528	* If add_key is FALSE, this will only update existing keys,
2529	* and not add new ones.
2530	* In general, should be little reason FALSE is ever passed in for add_key
2531	*
2532	* Returns TRUE on success.
2533	*/
2534	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)
2535	{
2536	shstr key_ (key);
2537	return set_ob_key_value_s (op, key_, value, add_key);
2538	}

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