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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 1.368 by root, Wed Dec 5 19:03:26 2018 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 $";
4	*/	3	*
5		4	* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
6	/*	5	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	6	* Copyright (©) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	7	* Copyright (©) 1992 Frank Tore Johansen
11		8	*
12	This program is free software; you can redistribute it and/or modify	9	* 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	10	* 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	11	* Free Software Foundation, either version 3 of the License, or (at your
15	(at your option) any later version.	12	* option) any later version.
16		13	*
17	This program is distributed in the hope that it will be useful,	14	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	17	* GNU General Public License for more details.
21		18	*
22	You should have received a copy of the GNU General Public License	19	* 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	20	* and the GNU General Public License along with this program. If not, see
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	21	* <http://www.gnu.org/licenses/>.
25		22	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	23	* The authors can be reached via e-mail to <support@deliantra.net>
27	*/	24	*/
28		25
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>	26	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	27	#include <stdio.h>
35	#include <sys/types.h>	28	#include <sys/types.h>
36	#include <sys/uio.h>	29	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	30	#include <object.h>
39	#include <funcpoint.h>	31	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>
42	int nrofallocobjects = 0;
43		32
44	object *objects; /* Pointer to the list of used objects */	33	#include <bitset>
45	object *active_objects; /* List of active objects that need to be processed */
46		34
		35	UUID UUID::cur;
		36	static uint64_t seq_next_save;
		37	static const uint64 UUID_GAP = 1<<19;
		38	uint32_t mapspace::smellcount = 10000;
		39
		40	objectvec objects;
		41	activevec actives;
		42
		43	freelist_item *object::freelist;
		44	uint32_t object::object_count;
		45	uint32_t object::free_count;
		46	uint32_t object::create_count;
		47	uint32_t object::destroy_count;
		48
		49	//+GPL
		50
47	short freearr_x[SIZEOFFREE]=	51	int 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,	52	0,
		53	0, 1, 1, 1, 0, -1, -1, -1,
		54	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};	55	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		56	};
50	short freearr_y[SIZEOFFREE]=	57	int 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,	58	0,
		59	-1, -1, 0, 1, 1, 1, 0, -1,
		60	-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};	61	-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]=	62	};
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]= {	63	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,	64	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};	65	1, 2, 3, 4, 5, 6, 7, 8,
		66	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		67	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		68	};
59		69
		70	static int maxfree[SIZEOFFREE] = {
		71	0,
		72	9, 10, 13, 14, 17, 18, 21, 22,
		73	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		74	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		75	};
		76
		77	const char *wall_suffix[16] = {
		78	"0",
		79	"1_3",
		80	"1_4",
		81	"2_1_2",
		82	"1_2",
		83	"2_2_4",
		84	"2_2_1",
		85	"3_1",
		86	"1_1",
		87	"2_2_3",
		88	"2_2_2",
		89	"3_3",
		90	"2_1_1",
		91	"3_4",
		92	"3_2",
		93	"4"
		94	};
		95
		96	static void
		97	write_uuid (uval64 skip, bool sync)
		98	{
		99	CALL_BEGIN (2);
		100	CALL_ARG_SV (newSVval64 (skip));
		101	CALL_ARG_SV (boolSV (sync));
		102	CALL_CALL ("cf::write_uuid", G_DISCARD);
		103	CALL_END;
		104	}
		105
		106	static void
		107	read_uuid ()
		108	{
		109	char filename[MAX_BUF];
		110
		111	sprintf (filename, "%s/uuid", settings.localdir);
		112
		113	seq_next_save = 0;
		114
		115	FILE *fp;
		116
		117	if (!(fp = fopen (filename, "r")))
		118	{
		119	if (errno == ENOENT)
		120	{
		121	LOG (llevInfo, "RESET uid to 1\n");
		122	UUID::cur.seq = 0;
		123	write_uuid (UUID_GAP, true);
		124	return;
		125	}
		126
		127	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		128	_exit (1);
		129	}
		130
		131	char buf [UUID::MAX_LEN];
		132	buf[0] = 0;
		133	fgets (buf, sizeof (buf), fp);
		134
		135	if (!UUID::cur.parse (buf))
		136	{
		137	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		138	_exit (1);
		139	}
		140
		141	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		142
		143	write_uuid (UUID_GAP, true);
		144	fclose (fp);
		145	}
		146
		147	UUID
		148	UUID::gen ()
		149	{
		150	UUID uid;
		151
		152	uid.seq = ++cur.seq;
		153
		154	if (ecb_expect_false (cur.seq >= seq_next_save))
		155	{
		156	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		157	write_uuid (UUID_GAP, false);
		158	}
		159
		160
		161	return uid;
		162	}
		163
		164	void
		165	UUID::init ()
		166	{
		167	read_uuid ();
		168	}
		169
		170	bool
		171	UUID::parse (const char *s)
		172	{
		173	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		174	return false;
		175
		176	seq = 0;
		177
		178	while (*s != '>')
		179	{
		180	if (*s < '0')
		181	return false;
		182
		183	// this gives nice branchless code with gcc
		184	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		185	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		186
		187	seq = (seq << 4) | digit;
		188
		189	++s;
		190	}
		191
		192	return true;
		193	}
		194
		195	char *
		196	UUID::append (char *buf) const
		197	{
		198	*buf++ = '<';
		199	*buf++ = '1';
		200	*buf++ = '.';
		201
		202	uint64_t seq = this->seq;
		203	const int bits = 64;
		204	char nz = 0;
		205	static const char tohex [] = "0123456789abcdef";
		206
		207	// assert (len >= 3 + bits / 4 + 1 + 1);
		208	for (int i = bits / 4; --i; )
		209	{
		210	uint8_t digit = seq >> (bits - 4);
		211
		212	*buf = tohex [digit];
		213	nz |= digit;
		214	buf += nz ? 1 : 0;
		215	seq <<= 4;
		216	}
		217
		218	// last digit is special - always emit
		219	uint8_t digit = seq >> (bits - 4);
		220	*buf++ = tohex [digit];
		221
		222	*buf++ = '>';
		223
		224	return buf;
		225	}
		226
		227	char *
		228	UUID::c_str () const
		229	{
		230	static char buf [MAX_LEN];
		231	*append (buf) = 0;
		232	return buf;
		233	}
60		234
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	235	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		236	static bool
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	237	compare_ob_value_lists_one (const object *wants, const object *has)
63	key_value * wants_field;	238	{
64
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	239	/* 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	240	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	241	* different structure or at least keep the lists sorted...
68	*/	242	*/
69		243
70	/* For each field in wants, */	244	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	245	for (key_value *kv = wants->kv.first; kv; kv = kv->next)
72	key_value * has_field;	246	if (has->kv.get (kv->key) != kv->value)
73		247	return false;
74	/* Look for a field in has with the same key. */	248
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. */	249	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	250	return true;
93	}	251	}
94		252
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	253	/* Returns TRUE if ob1 has the same key_values as ob2. */
		254	static bool
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	255	compare_ob_value_lists (const object *ob1, const object *ob2)
		256	{
97	/* However, there may be fields in has which aren't partnered in wants,	257	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	258	* so we need to run the comparison *twice*. :(
99	*/	259	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	260	return compare_ob_value_lists_one (ob1, ob2)
		261	&& compare_ob_value_lists_one (ob2, ob1);
101	}	262	}
102		263
103	/* Function examines the 2 objects given to it, and returns true if	264	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	265	* they can be merged together.
105	*	266	*
106	* Note that this function appears a lot longer than the macro it	267	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	268	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	269	* reduce this to the same efficiency.
109	*	270	*
110	* Check nrof variable *before* calling CAN_MERGE()	271	* Check nrof variable *before* calling can_merge()
111	*	272	*
112	* Improvements made with merge: Better checking on potion, and also	273	* Improvements made with merge: Better checking on potion, and also
113	* check weight	274	* check weight
114	*/	275	*/
115		276	bool object::can_merge_slow (object *ob1, object *ob2)
116	int CAN_MERGE(object *ob1, object *ob2) {	277	{
117
118	/* A couple quicksanity checks */	278	/* A couple quick sanity checks */
119	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	279	if (ob1 == ob2
		280	|| ob1->type != ob2->type
		281	|| ob1->value != ob2->value
		282	|| ob1->name != ob2->name
		283	|| ob1->custom_name != ob2->custom_name
		284	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
		285	return 0;
120		286
121	if (ob1->speed != ob2->speed) return 0;	287	/* Do not merge objects if nrof would overflow, assume nrof
		288	* is always 0 .. 2**31-1 */
		289	if (ob1->nrof > 0x7fffffff - ob2->nrof)
		290	return 0;
		291
		292	/* If the objects have been identified, set the BEEN_APPLIED flag.
		293	* This is to the comparison of the flags below will be OK. We
		294	* just can't ignore the been applied or identified flags, as they
		295	* are not equal - just if it has been identified, the been_applied
		296	* flags lose any meaning.
		297	*/
		298	if (ob1->flag [FLAG_IDENTIFIED])
		299	ob1->set_flag (FLAG_BEEN_APPLIED);
		300
		301	if (ob2->flag [FLAG_IDENTIFIED])
		302	ob2->set_flag (FLAG_BEEN_APPLIED);
		303
		304	if (ob1->arch->archname != ob2->arch->archname
		305	|| ob1->name != ob2->name
		306	|| ob1->title != ob2->title
		307	|| ob1->msg != ob2->msg
		308	|| ob1->weight != ob2->weight
		309	|| ob1->attacktype != ob2->attacktype
		310	|| ob1->magic != ob2->magic
		311	|| ob1->slaying != ob2->slaying
		312	|| ob1->skill != ob2->skill
		313	|| ob1->value != ob2->value
		314	|| ob1->animation_id != ob2->animation_id
		315	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
		316	|| ob1->client_type != ob2->client_type
		317	|| ob1->material != ob2->material
		318	|| ob1->lore != ob2->lore
		319	|| ob1->subtype != ob2->subtype
		320	|| ob1->move_type != ob2->move_type
		321	|| ob1->move_block != ob2->move_block
		322	|| ob1->move_allow != ob2->move_allow
		323	|| ob1->move_on != ob2->move_on
		324	|| ob1->move_off != ob2->move_off
		325	|| ob1->move_slow != ob2->move_slow
		326	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		327	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		328	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
		329	return 0;
		330
		331	if ((ob1->flag ^ ob2->flag)
		332	.reset (FLAG_INV_LOCKED)
		333	.reset (FLAG_REMOVED)
		334	.any ())
		335	return 0;
		336
		337	/* This is really a spellbook check - we should in general
		338	* not merge objects with real inventories, as splitting them
		339	* is hard.
		340	*/
		341	if (ob1->inv || ob2->inv)
		342	{
		343	if (!(ob1->inv && ob2->inv))
		344	return 0; /* inventories differ in length */
		345
		346	if (ob1->inv->below || ob2->inv->below)
		347	return 0; /* more than one object in inv */
		348
		349	if (!object::can_merge (ob1->inv, ob2->inv))
		350	return 0; /* inventory objects differ */
		351
		352	/* inventory ok - still need to check rest of this object to see
		353	* if it is valid.
		354	*/
		355	}
		356
		357	/* Don't merge objects that are applied. With the new 'body' code,
		358	* it is possible for most any character to have more than one of
		359	* some items equipped, and we don't want those to merge.
		360	*/
		361	if (ob1->flag [FLAG_APPLIED] || ob2->flag [FLAG_APPLIED])
		362	return 0;
		363
122	/* Note sure why the following is the case - either the object has to	364	/* Not 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	365	* be animated or have a very low speed. Is this an attempted monster
124	* check?	366	* check?
125	*/	367	*/
126	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	368	if (!ob1->flag [FLAG_ANIMATE] && ob1->has_active_speed ())
		369	return 0;
		370
		371	switch (ob1->type)
		372	{
		373	case SCROLL:
		374	if (ob1->level != ob2->level)
		375	return 0;
		376	break;
		377	}
		378
		379	if (!ob1->kv.empty () || !ob2->kv.empty ())
		380	{
		381	/* At least one of these has key_values. */
		382	if (ob1->kv.empty () != ob2->kv.empty ())
		383	return 0; /* One has fields, but the other one doesn't. */
		384
		385	if (!compare_ob_value_lists (ob1, ob2))
127	return 0;	386	return 0;
		387	}
128		388
129	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	389	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	}	390	{
		391	ob1->optimise ();
		392	ob2->optimise ();
150		393
151	/* If the objects have been identified, set the BEEN_APPLIED flag.	394	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	)	395	{
		396	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		397	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		398
		399	if (k1 != k2)
197	return 0;	400	return 0;
198		401
199	/* Don't merge objects that are applied. With the new 'body' code,	402	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;	403	return 1;
217	} else if (!compare_ob_value_lists(ob1, ob2)) {	404
		405	if (!cfperl_can_merge (ob1, ob2))
218	return 0;	406	return 0;
219	}	407	}
220	}	408	}
221		409
222	/* Everything passes, must be OK. */	410	/* Everything passes, must be OK. */
223	return 1;	411	return 1;
224	}	412	}
225		413
		414	// find player who can see this object
		415	object *
		416	object::visible_to () const
		417	{
		418	if (client_visible () && !flag [FLAG_REMOVED])
		419	{
		420	// see if we are in a container of sorts
		421	if (env)
		422	{
		423	// the player inventory itself is always visible
		424	if (env->is_player ())
		425	return env;
		426
		427	// else a player could have our env open
		428	object *envest = env->outer_env_or_self ();
		429
		430	// the player itself is always on a map, so we will find him here
		431	// even if our inv is in a player.
		432	if (envest->is_on_map ())
		433	if (object *pl = envest->ms ().player ())
		434	if (pl->container_ () == env)
		435	return pl;
		436	}
		437	else
		438	{
		439	// maybe there is a player standing on the same mapspace
		440	// this will catch the case where "this" is a player
		441	if (object *pl = ms ().player ())
		442	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		443	|| pl->container_ () == this)
		444	return pl;
		445	}
		446	}
		447
		448	return 0;
		449	}
		450
		451	// adjust weight per container type ("of holding")
		452	static weight_t
		453	weight_adjust_for (object *op, weight_t weight)
		454	{
		455	if (op->type == CONTAINER)
		456	weight -= weight * op->stats.Str / 100;
		457
		458	return weight;
		459	}
		460
226	/*	461	/*
		462	* subtracts, then adds, the specified weight to an object,
		463	* and also updates how much the environment(s) is/are carrying.
		464	*/
		465	static void
		466	adjust_weight (object *op, weight_t sub, weight_t add)
		467	{
		468	while (op)
		469	{
		470	weight_t carrying = (weight_t)op->carrying
		471	- weight_adjust_for (op, sub)
		472	+ weight_adjust_for (op, add);
		473
		474	sub = op->carrying;
		475	op->carrying = carrying;
		476	add = op->carrying;
		477
		478	if (object *pl = op->visible_to ())
		479	if (pl != op) // player is handled lazily
		480	esrv_update_item (UPD_WEIGHT, pl, op);
		481
		482	op = op->env;
		483	}
		484	}
		485
		486	/*
227	* sum_weight() is a recursive function which calculates the weight	487	* this is a recursive function which calculates the weight
228	* an object is carrying. It goes through in figures out how much	488	* an object is carrying. It goes through op and figures out how much
229	* containers are carrying, and sums it up.	489	* containers are carrying, and sums it up.
230	*/	490	*/
231	signed long sum_weight(object *op) {	491	void
232	signed long sum;	492	object::update_weight ()
233	object *inv;	493	{
234	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	494	weight_t sum = 0;
235	if (inv->inv)	495
236	sum_weight(inv);	496	for (object *op = inv; op; op = op->below)
237	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	497	{
		498	op->update_weight ();
		499
		500	sum += weight_adjust_for (this, op->total_weight ());
238	}	501	}
239	if (op->type == CONTAINER && op->stats.Str)	502
240	sum = (sum * (100 - op->stats.Str))/100;	503	if (sum != carrying)
241	if(op->carrying != sum)	504	{
		505	if (carrying != sum && carrying)//D
		506	LOG (llevDebug, "updating carrying got %ld, expected %ld (%s)\n",
		507	(long long)sum, (long long)carrying, debug_desc ());
		508
242	op->carrying = sum;	509	carrying = sum;
243	return sum;
244	}
245		510
		511	if (object *pl = visible_to ())
		512	if (pl != this) // player is handled lazily
		513	esrv_update_item (UPD_WEIGHT, pl, this);
		514	}
		515	}
		516
246	/**	517	/*
247	* Return the outermost environment object for a given object.	518	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
248	*/	519	*/
249		520	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) {	521	dump_object (object *op)
322	if(op==NULL) {	522	{
323	strcpy(errmsg,"[NULL pointer]");	523	if (!op)
324	return;	524	return strdup ("[NULLOBJ]");
325	}
326	errmsg[0]='\0';
327	dump_object2(op);
328	}
329		525
330	void dump_all_objects(void) {	526	object_freezer freezer;
331	object *op;	527	op->write (freezer);
332	for(op=objects;op!=NULL;op=op->next) {	528	return freezer.as_string ();
333	dump_object(op);
334	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
335	}
336	}	529	}
337		530
338	/*	531	char *
339	* get_nearest_part(multi-object, object 2) returns the part of the	532	object::as_string ()
340	* multi-object 1 which is closest to the second object.	533	{
341	* If it's not a multi-object, it is returned.	534	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	}	535	}
354		536
355	/*	537	/*
356	* Returns the object which has the count-variable equal to the argument.	538	* Returns the object which has the count-variable equal to the argument.
		539	* VERRRY slow.
357	*/	540	*/
358		541	object *
359	object *find_object(tag_t i) {	542	find_object (tag_t i)
360	object *op;	543	{
361	for(op=objects;op!=NULL;op=op->next)	544	for_all_objects (op)
362	if(op->count==i)	545	if (op->count == i)
363	break;
364	return op;	546	return op;
		547
		548	return 0;
		549	}
		550
		551	/*
		552	* Returns the object which has the uuid equal to the argument.
		553	* MOAR VERRRY slow.
		554	*/
		555
		556	object *
		557	find_object_uuid (UUID i)
		558	{
		559	for_all_objects (op)
		560	if (op->uuid == i)
		561	return op;
		562
		563	return 0;
365	}	564	}
366		565
367	/*	566	/*
368	* Returns the first object which has a name equal to the argument.	567	* Returns the first object which has a name equal to the argument.
369	* Used only by the patch command, but not all that useful.	568	* Used only by the patch command, but not all that useful.
370	* Enables features like "patch <name-of-other-player> food 999"	569	* Enables features like "patch <name-of-other-player> food 999"
371	*/	570	*/
372		571	object *
373	object *find_object_name(const char *str) {	572	find_object_name (const char *str)
374	const char *name = shstr::find (str);	573	{
375	object *op;	574	shstr_cmp str_ (str);
376	for(op=objects;op!=NULL;op=op->next)	575
		576	if (str_)
		577	for_all_objects (op)
377	if(&op->name == name)	578	if (op->name == str_)
378	break;	579	return op;
379		580
380	return op;	581	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	}	582	}
422		583
423	/*	584	/*
424	* Sets the owner and sets the skill and exp pointers to owner's current	585	* Sets the owner and sets the skill and exp pointers to owner's current
425	* skill and experience objects.	586	* skill and experience objects.
		587	* ACTUALLY NO! investigate! TODO
426	*/	588	*/
427	void set_owner (object *op, object *owner)	589	void
		590	object::set_owner (object *owner)
428	{	591	{
429	if(owner==NULL||op==NULL)	592	// allow objects which own objects
		593	if (owner)
		594	while (owner->owner)
		595	owner = owner->owner;
		596
		597	if (flag [FLAG_FREED])
		598	{
		599	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
430	return;	600	return;
431
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;
448
449	op->ownercount=owner->count;
450	owner->refcount++;
451
452	}
453
454	/* Set the owner to clone's current owner and set the skill and experience
455	* objects to clone's objects (typically those objects that where the owner's
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	{
466	object *owner = get_owner (clone);
467	if (owner == NULL) {
468	/* players don't have owners - they own themselves. Update
469	* as appropriate.
470	*/
471	if (clone->type == PLAYER) owner=clone;
472	else return;
473	}
474	set_owner(op, owner);
475
476	}
477
478	/* Zero the key_values on op, decrementing the shared-string
479	* refcounts and freeing the links.
480	*/
481	static void free_key_values(object * op)
482	{
483	for (key_value *i = op->key_values; i != 0; )
484	{	601	}
485	key_value *next = i->next;
486	delete i;
487	i = next;
488	}
489
490	op->key_values = 0;
491	}
492		602
493	void object::clear ()	603	this->owner = owner;
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	}	604	}
514		605
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	/*	606	/*
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,	607	* copy_to first frees everything allocated by the dst object,
557	* and then copies the contends of the first object into the second	608	* and then copies the contents of itself into the second
558	* object, allocating what needs to be allocated. Basically, any	609	* object, allocating what needs to be allocated. Basically, any
559	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	610	* 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	611	* if the first object is freed, the pointers in the new object
561	* will point at garbage.	612	* will point at garbage.
562	*/	613	*/
563		614	void
564	void copy_object (object *op2, object *op)	615	object::copy_to (object *dst)
565	{	616	{
566	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	617	dst->remove ();
567	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	618	*(object_copy *)dst = *this;
568		619
569	op2->clone (op);	620	// maybe move to object_copy?
		621	dst->kv = kv;
570		622
571	if (is_freed) SET_FLAG (op, FLAG_FREED);	623	dst->flag [FLAG_REMOVED] = true;
572	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	624	dst->activate ();
573
574	if (op2->speed < 0)
575	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
576
577	/* Copy over key_values, if any. */
578	if (op2->key_values != NULL)
579	{
580	key_value *tail = NULL;
581	key_value *i;
582
583	op->key_values = NULL;
584
585	for (i = op2->key_values; i != NULL; i = i->next)
586	{
587	key_value *new_link = new key_value;
588
589	new_link->next = NULL;
590	new_link->key = i->key;
591	new_link->value = i->value;
592
593	/* Try and be clever here, too. */
594	if (op->key_values == NULL)
595	{
596	op->key_values = new_link;
597	tail = new_link;
598	}
599	else
600	{
601	tail->next = new_link;
602	tail = new_link;
603	}
604	}
605	}
606
607	update_ob_speed (op);
608	}	625	}
609		626
610	/*	627	void
611	* get_object() grabs an object from the list of unused objects, makes	628	object::instantiate ()
612	* sure it is initialised, and returns it.	629	{
613	* If there are no free objects, expand_objects() is called to get more.	630	if (!uuid.seq) // HACK
		631	uuid = UUID::gen ();
		632
		633	// TODO: unclean state changes, should not be done in copy_to AND instantiate
		634	if (flag [FLAG_RANDOM_SPEED] && speed)
		635	speed_left = - speed - rndm (); // TODO animation
		636	else
		637	speed_left = -1.;
		638
		639	/* copy the body_info to the body_used - this is only really
		640	* need for monsters, but doesn't hurt to do it for everything.
		641	* by doing so, when a monster is created, it has good starting
		642	* values for the body_used info, so when items are created
		643	* for it, they can be properly equipped.
614	*/	644	*/
		645	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		646	slot[i].used = slot[i].info;
615		647
616	object *get_object ()	648	attachable::instantiate ();
617	{	649	}
618	object *op = new object;
619		650
620	op->count = ++ob_count;	651	object *
		652	object::clone ()
		653	{
		654	object *neu = create ();
		655	copy_to (neu);
621		656
622	op->active_next = 0;	657	// TODO: unclean state changes, should not be done in clone AND instantiate
623	op->active_prev = 0;	658	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
		659	neu->speed_left = - neu->speed - rndm (); // TODO animation
624		660
625	op->next = objects;	661	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;	662	return neu;
		663	}
		664
		665	// update the anhimation frame of an object, but only if it has an animation
		666	// assigned and the frame number if within the animation.
		667	void object::update_anim_frame (int frame)
		668	{
		669	if (ecb_expect_false (!has_anim () || frame >= anim_frames ()))
		670	return;
		671
		672	set_anim_frame (frame);
		673	update_object (this, UP_OBJ_FACE);
640	}	674	}
641		675
642	/*	676	/*
643	* If an object with the IS_TURNABLE() flag needs to be turned due	677	* 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	678	* 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.	679	* be called to update the face variable, _and_ how it looks on the map.
646	*/	680	*/
647		681	void
648	void update_turn_face(object *op) {	682	update_turn_face (object *op)
649	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	683	{
		684	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
650	return;	685	return;
651	SET_ANIMATION(op, op->direction);	686
652	update_object(op,UP_OBJ_FACE);	687	op->update_anim_frame (op->direction);
653	}	688	}
654		689
655	/*	690	/*
656	* Updates the speed of an object. If the speed changes from 0 to another	691	* 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.	692	* 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.	693	* This function needs to be called whenever the speed of an object changes.
659	*/	694	*/
		695	void
		696	object::set_speed (float speed)
		697	{
		698	this->speed = speed;
660		699
661	void update_ob_speed(object *op) {	700	if (has_active_speed ())
662	extern int arch_init;	701	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 {	702	else
692	/* If not on the active list, nothing needs to be done */	703	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	}	704	}
710		705
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	/*	706	/*
740	* update_object() updates the array which represents the map.	707	* update_object() updates the map.
741	* It takes into account invisible objects (and represent squares covered	708	* It takes into account invisible objects (and represent squares covered
742	* by invisible objects by whatever is below them (unless it's another	709	* by invisible objects by whatever is below them (unless it's another
743	* invisible object, etc...)	710	* invisible object, etc...)
744	* If the object being updated is beneath a player, the look-window	711	* 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	712	* of that player is updated (this might be a suboptimal way of
746	* updating that window, though, since update_object() is called _often_)	713	* updating that window, though, since update_object() is called _often_)
747	*	714	*
748	* action is a hint of what the caller believes need to be done.	715	* 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:	716	* current action are:
754	* UP_OBJ_INSERT: op was inserted	717	* UP_OBJ_INSERT: op was inserted
755	* UP_OBJ_REMOVE: op was removed	718	* UP_OBJ_REMOVE: op was removed
756	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	719	* 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.	720	* as that is easier than trying to look at what may have changed.
758	* UP_OBJ_FACE: only the objects face has changed.	721	* UP_OBJ_FACE: only the objects face has changed.
759	*/	722	*/
760		723	void
761	void update_object(object *op, int action) {	724	update_object (object *op, int action)
762	int update_now=0, flags;	725	{
763	MoveType move_on, move_off, move_block, move_slow;	726	if (!op)
764		727	{
765	if (op == NULL) {
766	/* this should never happen */	728	/* this should never happen */
767	LOG(llevDebug,"update_object() called for NULL object.\n");	729	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
768	return;	730	return;
769	}
770		731	}
771	if(op->env!=NULL) {	732
		733	if (!op->is_on_map ())
		734	{
772	/* Animation is currently handled by client, so nothing	735	/* Animation is currently handled by client, so nothing
773	* to do in this case.	736	* to do in this case.
774	*/	737	*/
775	return;	738	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		739	}
		740
783	/* make sure the object is within map boundaries */	741	/* make sure the object is within map boundaries */
784	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	742	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)) {	743	{
786	LOG(llevError,"update_object() called for object out of map!\n");	744	LOG (llevError, "update_object() called for object out of map!\n");
787	#ifdef MANY_CORES	745	#ifdef MANY_CORES
788	abort();	746	abort ();
789	#endif	747	#endif
790	return;	748	return;
791	}
792		749	}
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		750
		751	mapspace &m = op->ms ();
		752
		753	if (!(m.flags_ & P_UPTODATE))
		754	m.update_up (); // nothing to do except copy up
800	if (action == UP_OBJ_INSERT) {	755	else if (action == UP_OBJ_INSERT)
		756	{
		757	#if 0
		758	// this is likely overkill, TODO: revisit (schmorp)
801	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	759	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
802	update_now=1;	760	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
803		761	|| (op->is_player () && !(m.flags_ & P_PLAYER))
804	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	762	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
805	update_now=1;	763	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
806		764	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
807	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	765	|| (m.move_on | op->move_on ) != m.move_on
808	update_now=1;
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;	766	|| (m.move_off | op->move_off ) != m.move_off
		767	|| (m.move_slow | op->move_slow) != m.move_slow
815	/* This isn't perfect, but I don't expect a lot of objects to	768	/* This isn't perfect, but I don't expect a lot of objects to
816	* to have move_allow right now.	769	* have move_allow right now.
817	*/	770	*/
818	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	771	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
819	update_now=1;	772	m.invalidate ();
820	if ((move_slow | op->move_slow) != move_slow) update_now=1;	773	#else
		774	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		775	m.invalidate ();
		776	#endif
821	}	777	}
822	/* if the object is being removed, we can't make intelligent	778	/* if the object is being removed, we can't make intelligent
823	* decisions, because remove_ob can't really pass the object	779	* decisions, because remove_ob can't really pass the object
824	* that is being removed.	780	* that is being removed.
825	*/	781	*/
826	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	782	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
827	update_now=1;	783	m.invalidate ();
828	} else if (action == UP_OBJ_FACE) {	784	else if (action == UP_OBJ_FACE)
829	/* Nothing to do for that case */	785	m.update_up (); // nothing to do for that case, except copy up
830	}
831	else {	786	else
832	LOG(llevError,"update_object called with invalid action: %d\n", action);	787	LOG (llevError, "update_object called with invalid action: %d\n", action);
833	}
834		788
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)	789	if (op->more)
841	update_object(op->more, action);	790	update_object (op->more, action);
842	}	791	}
843		792
		793	object::object ()
		794	{
		795	this->set_flag (FLAG_REMOVED);
844		796
845	/*	797	//expmul = 1.0; declared const for the time being
846	* free_object() frees everything allocated by an object, removes	798	face = blank_face;
847	* it from the list of used objects, and puts it on the list of	799	material = MATERIAL_NULL;
848	* free objects. The IS_FREED() flag is set in the object.	800	}
849	* The object must have been removed by remove_ob() first for	801
850	* this function to succeed.	802	object::~object ()
		803	{
		804	unlink ();
		805
		806	kv.clear ();
		807	}
		808
		809	void object::link ()
		810	{
		811	assert (!index);//D
		812	uuid = UUID::gen ();
		813
		814	refcnt_inc ();
		815	objects.insert (this);
		816
		817	++create_count;
		818
		819	}
		820
		821	void object::unlink ()
		822	{
		823	if (!index)
		824	return;
		825
		826	++destroy_count;
		827
		828	objects.erase (this);
		829	refcnt_dec ();
		830	}
		831
		832	void
		833	object::activate ()
		834	{
		835	/* If already on active list, don't do anything */
		836	if (active)
		837	return;
		838
		839	if (has_active_speed ())
		840	{
		841	if (flag [FLAG_FREED])
		842	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
		843
		844	actives.insert (this);
		845	}
		846	}
		847
		848	void
		849	object::activate_recursive ()
		850	{
		851	activate ();
		852
		853	for (object *op = inv; op; op = op->below)
		854	op->activate_recursive ();
		855	}
		856
		857	/* This function removes object 'op' from the list of active
		858	* objects.
		859	* This should only be used for style maps or other such
		860	* reference maps where you don't want an object that isn't
		861	* in play chewing up cpu time getting processed.
		862	* The reverse of this is to call update_ob_speed, which
		863	* will do the right thing based on the speed of the object.
851	*	864	*/
852	* If free_inventory is set, free inventory as well. Else drop items in	865	void
853	* inventory to the ground.	866	object::deactivate ()
		867	{
		868	/* If not on the active list, nothing needs to be done */
		869	if (!active)
		870	return;
		871
		872	actives.erase (this);
		873	}
		874
		875	void
		876	object::deactivate_recursive ()
		877	{
		878	for (object *op = inv; op; op = op->below)
		879	op->deactivate_recursive ();
		880
		881	deactivate ();
		882	}
		883
		884	void
		885	object::set_flag_inv (int flag, int value)
		886	{
		887	for (object *op = inv; op; op = op->below)
		888	{
		889	op->flag [flag] = value;
		890	op->set_flag_inv (flag, value);
		891	}
		892	}
		893
		894	/*
		895	* Remove and free all objects in the inventory of the given object.
		896	* object.c ?
		897	*/
		898	void
		899	object::destroy_inv (bool drop_to_ground)
		900	{
		901	// need to check first, because the checks below might segfault
		902	// as we might be on an invalid mapspace and crossfire code
		903	// is too buggy to ensure that the inventory is empty.
		904	// corollary: if you create arrows etc. with stuff in its inventory,
		905	// cf will crash below with off-map x and y
		906	if (!inv)
		907	return;
		908
		909	/* Only if the space blocks everything do we not process -
		910	* if some form of movement is allowed, let objects
		911	* drop on that space.
854	*/	912	*/
		913	if (!drop_to_ground
		914	|| !map
		915	|| !map->linkable ()
		916	|| map->no_drop
		917	|| ms ().move_block == MOVE_ALL)
		918	{
		919	while (inv)
		920	inv->destroy ();
		921	}
		922	else
		923	{ /* Put objects in inventory onto this space */
		924	while (inv)
		925	{
		926	object *op = inv;
855		927
856	void	928	if (op->flag [FLAG_STARTEQUIP]
857	free_object (object * ob)	929	|| op->flag [FLAG_NO_DROP]
858	{	930	|| op->type == RUNE
859	free_object2 (ob, 0);	931	|| op->type == TRAP
		932	|| op->flag [FLAG_IS_A_TEMPLATE]
		933	|| op->flag [FLAG_DESTROY_ON_DEATH])
		934	op->destroy ();
		935	else
		936	map->insert (op, x, y);
		937	}
		938	}
860	}	939	}
861		940
		941	/*
		942	* Remove and free all objects in the inventory of the given object.
		943	* Unlike destroy_inv, this assumes the *this is destroyed as well
		944	* well, so we can (and have to!) take shortcuts.
		945	*/
862	void	946	void
863	free_object2 (object * ob, int free_inventory)	947	object::destroy_inv_fast ()
864	{	948	{
		949	while (object *op = inv)
		950	{
		951	// remove from object the fast way
		952	op->flag [FLAG_REMOVED] = true;
		953	op->env = 0;
		954	if ((inv = inv->below))
		955	inv->above = 0;
		956
		957	// then destroy
		958	op->destroy ();
		959	}
		960	}
		961
		962	void
		963	object::freelist_free (int count)
		964	{
		965	while (count-- && freelist)
		966	{
		967	freelist_item *next = freelist->next;
		968	// count is being "destroyed"
		969
		970	sfree ((char *)freelist, sizeof (object));
		971
		972	freelist = next;
		973	--free_count;
		974	}
		975	}
		976
		977	object *
		978	object::create ()
		979	{
865	object *tmp, *op;	980	object *op;
866		981
867	if (!QUERY_FLAG (ob, FLAG_REMOVED))	982	if (freelist)
868	{
869	LOG (llevDebug, "Free object called with non removed object\n");
870	dump_object (ob);
871	#ifdef MANY_CORES
872	abort ();
873	#endif
874	}	983	{
		984	freelist_item li = *freelist;
		985	memset (freelist, 0, sizeof (object));
875		986
876	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	987	op = new (freelist) object;
		988	op->count = li.count;
		989
		990	freelist = li.next;
		991	--free_count;
877	{	992	}
878	LOG (llevMonster, "Warning: tried to free friendly object.\n");	993	else
		994	{
		995	void *ni = salloc0<char> (sizeof (object));
		996
		997	op = new(ni) object;
		998
		999	op->count = ++object_count;
		1000	}
		1001
		1002	op->link ();
		1003
		1004	return op;
		1005	}
		1006
		1007	void
		1008	object::do_delete ()
		1009	{
		1010	uint32_t count = this->count;
		1011
		1012	this->~object ();
		1013
		1014	freelist_item *li = (freelist_item *)this;
		1015	li->next = freelist;
		1016	li->count = count;
		1017
		1018	freelist = li;
		1019	++free_count;
		1020	}
		1021
		1022	void
		1023	object::do_destroy ()
		1024	{
		1025	if (flag [FLAG_IS_LINKED])
		1026	remove_link ();
		1027
		1028	if (flag [FLAG_FRIENDLY])
879	remove_friendly_object (ob);	1029	remove_friendly_object (this);
		1030
		1031	remove ();
		1032
		1033	attachable::do_destroy ();
		1034
		1035	deactivate ();
		1036	unlink ();
		1037
		1038	flag [FLAG_FREED] = 1;
		1039
		1040	// hack to ensure that freed objects still have a valid map
		1041	map = &freed_map;
		1042	x = 1;
		1043	y = 1;
		1044
		1045	if (more)
880	}	1046	{
881		1047	more->destroy ();
882	if (QUERY_FLAG (ob, FLAG_FREED))	1048	more = 0;
883	{	1049	}
884	dump_object (ob);	1050
885	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	1051	head = 0;
		1052
		1053	// clear those pointers that likely might cause circular references
		1054	owner = 0;
		1055	enemy = 0;
		1056	attacked_by = 0;
		1057	current_weapon = 0;
		1058	}
		1059
		1060	void
		1061	object::destroy ()
		1062	{
		1063	if (destroyed ())
		1064	return;
		1065
		1066	if (!is_head () && !head->destroyed ())
		1067	{
		1068	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1069	head->destroy ();
886	return;	1070	return;
887	}	1071	}
888		1072
889	if (ob->more != NULL)	1073	destroy_inv_fast ();
890	{
891	free_object2 (ob->more, free_inventory);
892	ob->more = NULL;
893	}
894		1074
895	if (ob->inv)	1075	if (is_head ())
896	{	1076	if (sound_destroy)
897	/* Only if the space blocks everything do we not process -	1077	play_sound (sound_destroy);
898	* if some form of movemnt is allowed, let objects	1078	else if (flag [FLAG_MONSTER])
899	* drop on that space.	1079	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		1080
907	while (op != NULL)	1081	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	}	1082	}
971		1083
972	/*	1084	/* 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	1085	* 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	1086	* which it is currently tied to. When this function is done, the
990	* object will have no environment. If the object previously had an	1087	* object will have no environment. If the object previously had an
991	* environment, the x and y coordinates will be updated to	1088	* environment, the x and y coordinates will be updated to
992	* the previous environment.	1089	* the previous environment.
993	* Beware: This function is called from the editor as well!
994	*/	1090	*/
		1091	void
		1092	object::do_remove ()
		1093	{
		1094	if (flag [FLAG_REMOVED])
		1095	return;
995		1096
996	void remove_ob(object *op) {	1097	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		1098
1005	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1099	flag [FLAG_REMOVED] = true;
1006	dump_object(op);
1007	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1008		1100
1009	/* Changed it to always dump core in this case. As has been learned	1101	if (more)
1010	* in the past, trying to recover from errors almost always	1102	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		1103
1024	SET_FLAG(op, FLAG_REMOVED);	1104	/*
1025
1026	/*
1027	* In this case, the object to be removed is in someones	1105	* In this case, the object to be removed is in someones
1028	* inventory.	1106	* inventory.
1029	*/	1107	*/
1030	if(op->env!=NULL) {	1108	if (env)
1031	if(op->nrof)	1109	{
1032	sub_weight(op->env, op->weight*op->nrof);	1110	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1033	else	1111	if (object *pl = visible_to ())
1034	sub_weight(op->env, op->weight+op->carrying);	1112	esrv_del_item (pl->contr, count);
		1113	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1035		1114
1036	/* NO_FIX_PLAYER is set when a great many changes are being	1115	adjust_weight (env, total_weight (), 0);
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		1116
1044	if(op->above!=NULL)	1117	object *pl = in_player ();
1045	op->above->below=op->below;
1046	else
1047	op->env->inv=op->below;
1048		1118
1049	if(op->below!=NULL)
1050	op->below->above=op->above;
1051
1052	/* we set up values so that it could be inserted into	1119	/* we set up values so that it could be inserted into
1053	* the map, but we don't actually do that - it is up	1120	* the map, but we don't actually do that - it is up
1054	* to the caller to decide what we want to do.	1121	* to the caller to decide what we want to do.
1055	*/	1122	*/
1056	op->x=op->env->x,op->y=op->env->y;	1123	map = env->map;
1057	op->map=op->env->map;	1124	x = env->x;
1058	op->above=NULL,op->below=NULL;	1125	y = env->y;
1059	op->env=NULL;
1060	return;
1061	}
1062		1126
1063	/* If we get here, we are removing it from a map */	1127	// make sure cmov optimisation is applicable
1064	if (op->map == NULL) return;	1128	*(above ? &above->below : &env->inv) = below;
		1129	*(below ? &below->above : &above ) = above; // &above is just a dummy
1065		1130
1066	x = op->x;	1131	above = 0;
1067	y = op->y;	1132	below = 0;
1068	m = get_map_from_coord(op->map, &x, &y);	1133	env = 0;
1069		1134
1070	if (!m) {	1135	if (pl && pl->is_player ())
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	*/	1136	{
1077	abort();	1137	if (ecb_expect_false (pl->contr->combat_ob == this))
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	*/	1138	{
1102	if(GET_MAP_OB(m,x,y)!=op) {	1139	pl->apply (pl->contr->combat_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
1103	dump_object(op);	1140	pl->contr->combat_ob = 0;
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);	1141	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
1105	dump_object(GET_MAP_OB(m,x,y));	1142	}
1106	LOG(llevError,"%s\n",errmsg);	1143
		1144	if (ecb_expect_false (pl->contr->ranged_ob == this))
		1145	{
		1146	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1147	pl->contr->ranged_ob = 0;
		1148	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1149	}
		1150
		1151	pl->contr->queue_stats_update ();
		1152
		1153	if (ecb_expect_false (glow_radius) && pl->is_on_map ())
		1154	update_all_los (pl->map, pl->x, pl->y);
1107	}	1155	}
1108	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1156	}
		1157	else if (map)
1109	}	1158	{
1110	op->above=NULL;	1159	map->dirty = true;
1111	op->below=NULL;	1160	mapspace &ms = this->ms ();
1112		1161
1113	if (op->map->in_memory == MAP_SAVING)	1162	if (object *pl = ms.player ())
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	*/	1163	{
		1164	if (is_player ())
		1165	{
		1166	if (!flag [FLAG_WIZPASS])
		1167	ms.smell = ++mapspace::smellcount; // remember the smell of the player
1122		1168
1123	if(tmp->type==PLAYER && tmp!=op) {	1169	// leaving a spot always closes any open container on the ground
		1170	if (container && !container->env)
		1171	// this causes spurious floorbox updates, but it ensures
		1172	// that the CLOSE event is being sent.
		1173	close_container ();
		1174
		1175	--map->players;
		1176	map->touch ();
		1177	}
		1178	else if (pl->container_ () == this)
		1179	{
		1180	// removing a container should close it
		1181	close_container ();
		1182	}
		1183	else
		1184	esrv_del_item (pl->contr, count);
		1185	}
		1186
		1187	/* link the object above us */
		1188	// re-link, make sure compiler can easily use cmove
		1189	*(above ? &above->below : &ms.top) = below;
		1190	*(below ? &below->above : &ms.bot) = above;
		1191
		1192	above = 0;
		1193	below = 0;
		1194
		1195	ms.invalidate ();
		1196
		1197	int check_walk_off = !flag [FLAG_NO_APPLY];
		1198
		1199	if (object *pl = ms.player ())
		1200	{
		1201	if (pl->container_ () == this)
1124	/* If a container that the player is currently using somehow gets	1202	/* If a container that the player is currently using somehow gets
1125	* removed (most likely destroyed), update the player view	1203	* removed (most likely destroyed), update the player view
1126	* appropriately.	1204	* appropriately.
1127	*/	1205	*/
1128	if (tmp->container==op) {	1206	pl->close_container ();
1129	CLEAR_FLAG(op, FLAG_APPLIED);	1207
1130	tmp->container=NULL;	1208	//TODO: the floorbox prev/next might need updating
1131	}	1209	//esrv_del_item (pl->contr, count);
1132	tmp->contr->socket.update_look=1;	1210	//TODO: update floorbox to preserve ordering
		1211	if (pl->contr->ns)
		1212	pl->contr->ns->floorbox_update ();
1133	}	1213	}
		1214
		1215	if (check_walk_off)
		1216	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1217	{
		1218	above = tmp->above;
		1219
		1220	/* No point updating the players look faces if he is the object
		1221	* being removed.
		1222	*/
		1223
1134	/* See if player moving off should effect something */	1224	/* See if object moving off should effect something */
1135	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1225	if ((move_type & tmp->move_off)
1136	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1226	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1137
1138	move_apply(tmp, op, NULL);	1227	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	}	1228	}
1143	}
1144		1229
1145	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1230	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);	1231	update_all_los (map, x, y);
1166		1232	}
1167	}	1233	}
1168		1234
1169	/*	1235	/*
1170	* merge_ob(op,top):	1236	* merge_ob(op,top):
1171	*	1237	*
1172	* This function goes through all objects below and including top, and	1238	* This function goes through all objects below and including top, and
1173	* merges op to the first matching object.	1239	* merges op to the first matching object.
1174	* If top is NULL, it is calculated.	1240	* If top is NULL, it is calculated.
1175	* Returns pointer to object if it succeded in the merge, otherwise NULL	1241	* Returns pointer to object if it succeded in the merge, otherwise NULL
1176	*/	1242	*/
1177		1243	object *
1178	object *merge_ob(object *op, object *top) {	1244	merge_ob (object *op, object *top)
		1245	{
1179	if(!op->nrof)	1246	if (!op->nrof)
1180	return 0;	1247	return 0;
1181	if(top==NULL)	1248
		1249	if (!top)
1182	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1250	for (top = op; top && top->above; top = top->above)
		1251	;
		1252
1183	for(;top!=NULL;top=top->below) {	1253	for (; top; top = top->below)
1184	if(top==op)	1254	if (object::can_merge (op, top))
1185	continue;
1186	if (CAN_MERGE(op,top))
1187	{	1255	{
1188	top->nrof+=op->nrof;	1256	top->nrof += op->nrof;
1189	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1257
1190	op->weight = 0; /* Don't want any adjustements now */	1258	if (object *pl = top->visible_to ())
1191	remove_ob(op);	1259	esrv_update_item (UPD_NROF, pl, top);
1192	free_object(op);	1260
		1261	op->weight = 0; // cancel the addition above
		1262	op->carrying = 0; // must be 0 already
		1263
		1264	op->destroy ();
		1265
1193	return top;	1266	return top;
1194	}	1267	}
1195	}	1268
1196	return NULL;	1269	return 0;
1197	}	1270	}
1198		1271
		1272	void
		1273	object::expand_tail ()
		1274	{
		1275	if (more)
		1276	return;
		1277
		1278	object *prev = this;
		1279
		1280	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1281	{
		1282	object *op = at->instance ();
		1283
		1284	op->name = name;
		1285	op->name_pl = name_pl;
		1286	op->title = title;
		1287
		1288	op->head = this;
		1289	prev->more = op;
		1290
		1291	prev = op;
		1292	}
		1293	}
		1294
1199	/*	1295	/*
1200	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1296	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1201	* job preparing multi-part monsters	1297	* job preparing multi-part monsters.
1202	*/	1298	*/
		1299	object *
1203	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1300	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1204	object* tmp;	1301	{
1205	if (op->head)	1302	op->remove ();
1206	op=op->head;	1303
1207	for (tmp=op;tmp;tmp=tmp->more){	1304	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1305	{
1208	tmp->x=x+tmp->arch->clone.x;	1306	tmp->x = x + tmp->arch->x;
1209	tmp->y=y+tmp->arch->clone.y;	1307	tmp->y = y + tmp->arch->y;
1210	}	1308	}
		1309
1211	return insert_ob_in_map (op, m, originator, flag);	1310	return insert_ob_in_map (op, m, originator, flag);
1212	}	1311	}
1213		1312
1214	/*	1313	/*
1215	* insert_ob_in_map (op, map, originator, flag):	1314	* insert_ob_in_map (op, map, originator, flag):
1216	* This function inserts the object in the two-way linked list	1315	* This function inserts the object in the two-way linked list
…		…
1226	* Passing 0 for flag gives proper default values, so flag really only needs	1325	* Passing 0 for flag gives proper default values, so flag really only needs
1227	* to be set if special handling is needed.	1326	* to be set if special handling is needed.
1228	*	1327	*
1229	* Return value:	1328	* Return value:
1230	* new object if 'op' was merged with other object	1329	* new object if 'op' was merged with other object
1231	* NULL if 'op' was destroyed	1330	* NULL if there was an error (destroyed, blocked etc.)
1232	* just 'op' otherwise	1331	* just 'op' otherwise
1233	*/	1332	*/
1234		1333	object *
1235	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1334	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1236	{	1335	{
1237	object *tmp, *top, *floor=NULL;	1336	op->remove ();
1238	sint16 x,y;
1239		1337
1240	if (QUERY_FLAG (op, FLAG_FREED)) {	1338	if (m == &freed_map)//D TODO: remove soon
1241	LOG (llevError, "Trying to insert freed object!\n");	1339	{//D
1242	return NULL;	1340	LOG (llevError | logBacktrace, "tries to insert object on freed objects map: %s", op->debug_desc ());//D
		1341	}//D
		1342
		1343	/* Ideally, the caller figures this out. However, it complicates a lot
		1344	* of areas of callers (eg, anything that uses find_free_spot would now
		1345	* need extra work
		1346	*/
		1347	maptile *newmap = m;
		1348	if (!xy_normalise (newmap, op->x, op->y))
1243	}	1349	{
1244	if(m==NULL) {	1350	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;	1351	return 0;
1248	}	1352	}
1249	if(out_of_map(m,op->x,op->y)) {	1353
1250	dump_object(op);	1354	if (object *more = op->more)
1251	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1355	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;	1356	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		1357
1269	object *more = op->more;	1358	op->flag [FLAG_REMOVED] = false;
		1359	op->env = 0;
		1360	op->map = newmap;
1270		1361
1271	/* We really need the caller to normalize coordinates - if	1362	mapspace &ms = op->ms ();
1272	* we set the map, that doesn't work if the location is within	1363
1273	* a map and this is straddling an edge. So only if coordinate	1364	/* this has to be done after we translate the coordinates.
1274	* is clear wrong do we normalize it.	1365	*/
		1366	if (op->nrof && !(flag & INS_NO_MERGE))
		1367	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1368	if (object::can_merge (op, tmp))
1275	*/	1369	{
1276	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1370	// TODO: we actually want to update tmp, not op,
1277	more->map = get_map_from_coord(m, &more->x, &more->y);	1371	// but some caller surely breaks when we return tmp
1278	} else if (!more->map) {	1372	// from here :/
1279	/* For backwards compatibility - when not dealing with tiled maps,	1373	op->nrof += tmp->nrof;
1280	* more->map should always point to the parent.	1374	tmp->destroy ();
1281	*/
1282	more->map = m;
1283	}	1375	}
1284		1376
1285	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1377	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1286	if ( ! op->head)	1378	op->clr_flag (FLAG_INV_LOCKED);
1287	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1379
1288	return NULL;	1380	if (!op->flag [FLAG_ALIVE])
		1381	op->clr_flag (FLAG_NO_STEAL);
		1382
		1383	if (flag & INS_BELOW_ORIGINATOR)
		1384	{
		1385	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1386	{
		1387	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1388	abort ();
1289	}	1389	}
		1390
		1391	if (!originator->is_on_map ())
		1392	{
		1393	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1394	op->debug_desc (), originator->debug_desc ());
		1395	abort ();
		1396	}
		1397
		1398	op->above = originator;
		1399	op->below = originator->below;
		1400	originator->below = op;
		1401
		1402	*(op->below ? &op->below->above : &ms.bot) = op;
		1403	}
		1404	else
1290	}	1405	{
1291	CLEAR_FLAG(op,FLAG_REMOVED);	1406	object *floor = 0;
		1407	object *top = ms.top;
1292		1408
1293	/* Ideally, the caller figures this out. However, it complicates a lot	1409	/* If there are other objects, then */
1294	* of areas of callers (eg, anything that uses find_free_spot would now	1410	if (top)
1295	* need extra work	1411	{
1296	*/	1412	/*
1297	op->map=get_map_from_coord(m, &op->x, &op->y);	1413	* If there are multiple objects on this space, we do some trickier handling.
1298	x = op->x;	1414	* We've already dealt with merging if appropriate.
1299	y = op->y;	1415	* Generally, we want to put the new object on top. But if
		1416	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1417	* floor, we want to insert above that and no further.
		1418	* Also, if there are spell objects on this space, we stop processing
		1419	* once we get to them. This reduces the need to traverse over all of
		1420	* them when adding another one - this saves quite a bit of cpu time
		1421	* when lots of spells are cast in one area. Currently, it is presumed
		1422	* that flying non pickable objects are spell objects.
		1423	*/
		1424	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1425	{
		1426	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
		1427	floor = tmp;
1300		1428
1301	/* this has to be done after we translate the coordinates.	1429	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1302	*/	1430	{
1303	if(op->nrof && !(flag & INS_NO_MERGE)) {	1431	/* 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)	1432	top = tmp->below;
1305	if (CAN_MERGE(op,tmp)) {	1433	break;
1306	op->nrof+=tmp->nrof;	1434	}
1307	remove_ob(tmp);	1435
1308	free_object(tmp);	1436	top = tmp;
1309	}	1437	}
1310	}
1311		1438
1312	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1439	/* We let update_position deal with figuring out what the space
1313	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1440	* looks like instead of lots of conditions here.
1314	if (!QUERY_FLAG(op, FLAG_ALIVE))	1441	* makes things faster, and effectively the same result.
1315	CLEAR_FLAG(op, FLAG_NO_STEAL);	1442	*/
1316		1443
1317	if (flag & INS_BELOW_ORIGINATOR) {	1444	/* Have object 'fall below' other objects that block view.
1318	if (originator->map != op->map || originator->x != op->x ||	1445	* Unless those objects are exits.
1319	originator->y != op->y) {	1446	* 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");	1447	* Need to find the object that in fact blocks view, otherwise
1321	abort();	1448	* stacking is a bit odd.
		1449	*/
		1450	if (!(flag & INS_ON_TOP)
		1451	&& ms.flags () & P_BLOCKSVIEW
		1452	&& (op->face && !faces [op->face].visibility))
		1453	{
		1454	object *last;
		1455
		1456	for (last = top; last != floor; last = last->below)
		1457	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
		1458	break;
		1459
		1460	/* Check to see if we found the object that blocks view,
		1461	* and make sure we have a below pointer for it so that
		1462	* we can get inserted below this one, which requires we
		1463	* set top to the object below us.
		1464	*/
		1465	if (last && last->below && last != floor)
		1466	top = last->below;
		1467	}
		1468	} /* If objects on this space */
		1469
		1470	if (flag & INS_ABOVE_FLOOR_ONLY)
		1471	top = floor;
		1472
		1473	// insert object above top, or bottom-most if top = 0
		1474	if (!top)
		1475	{
		1476	op->below = 0;
		1477	op->above = ms.bot;
		1478	ms.bot = op;
		1479
		1480	*(op->above ? &op->above->below : &ms.top) = op;
1322	}	1481	}
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 {	1482	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	*/	1483	{
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;	1484	op->above = top->above;
1402	if (op->above) op->above->below = op;
1403	op->below = top;
1404	top->above = op;	1485	top->above = op;
		1486
		1487	op->below = top;
		1488	*(op->above ? &op->above->below : &ms.top) = op;
1405	}	1489	}
1406	if (op->above==NULL)	1490	}
1407	SET_MAP_TOP(op->map,op->x, op->y, op);
1408	} /* else not INS_BELOW_ORIGINATOR */
1409		1491
1410	if(op->type==PLAYER)	1492	if (op->is_player ())
		1493	{
1411	op->contr->do_los=1;	1494	op->contr->do_los = 1;
		1495	++op->map->players;
		1496	op->map->touch ();
		1497	}
1412		1498
1413	/* If we have a floor, we know the player, if any, will be above	1499	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		1500
		1501	if (object *pl = ms.player ())
		1502	//TODO: the floorbox prev/next might need updating
		1503	//esrv_send_item (pl, op);
		1504	//TODO: update floorbox to preserve ordering
		1505	if (pl->contr->ns)
		1506	pl->contr->ns->floorbox_update ();
		1507
1422	/* If this object glows, it may affect lighting conditions that are	1508	/* If this object glows, it may affect lighting conditions that are
1423	* visible to others on this map. But update_all_los is really	1509	* 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	1510	* 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	1511	* on the map will get recalculated. The players could very well
1426	* be far away from this change and not affected in any way -	1512	* be far away from this change and not affected in any way -
1427	* this should get redone to only look for players within range,	1513	* this should get redone to only look for players within range,
1428	* or just updating the P_NEED_UPDATE for spaces within this area	1514	* or just updating the P_UPTODATE for spaces within this area
1429	* of effect may be sufficient.	1515	* of effect may be sufficient.
1430	*/	1516	*/
1431	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1517	if (op->affects_los ())
		1518	{
		1519	op->ms ().invalidate ();
1432	update_all_los(op->map, op->x, op->y);	1520	update_all_los (op->map, op->x, op->y);
		1521	}
1433		1522
1434
1435	/* updates flags (blocked, alive, no magic, etc) for this map space */	1523	/* updates flags (blocked, alive, no magic, etc) for this map space */
1436	update_object(op,UP_OBJ_INSERT);	1524	update_object (op, UP_OBJ_INSERT);
1437		1525
		1526	INVOKE_OBJECT (INSERT, op);
1438		1527
1439	/* Don't know if moving this to the end will break anything. However,	1528	/* 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.	1529	* we want to have floorbox_update called before calling this.
1441	*	1530	*
1442	* check_move_on() must be after this because code called from	1531	* check_move_on() must be after this because code called from
1443	* check_move_on() depends on correct map flags (so functions like	1532	* check_move_on() depends on correct map flags (so functions like
1444	* blocked() and wall() work properly), and these flags are updated by	1533	* blocked() and wall() work properly), and these flags are updated by
1445	* update_object().	1534	* update_object().
1446	*/	1535	*/
1447		1536
1448	/* if this is not the head or flag has been passed, don't check walk on status */	1537	/* 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) {	1538	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1539	{
1451	if (check_move_on(op, originator))	1540	if (check_move_on (op, originator, flag))
1452	return NULL;	1541	return 0;
1453		1542
1454	/* If we are a multi part object, lets work our way through the check	1543	/* If we are a multi part object, let's work our way through the check
1455	* walk on's.	1544	* walk on's.
1456	*/	1545	*/
1457	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1546	for (object *tmp = op->more; tmp; tmp = tmp->more)
1458	if (check_move_on (tmp, originator))	1547	if (check_move_on (tmp, originator, flag))
1459	return NULL;	1548	return 0;
1460	}	1549	}
		1550
1461	return op;	1551	return op;
1462	}	1552	}
1463		1553
1464	/* this function inserts an object in the map, but if it	1554	/* 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.	1555	* 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.	1556	* op is the object to insert it under: supplies x and the map.
1467	*/	1557	*/
1468	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1558	void
1469	object *tmp;	1559	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1470	object *tmp1;	1560	{
1471
1472	/* first search for itself and remove any old instances */	1561	/* first search for itself and remove any old instances */
1473		1562
1474	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1563	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1475	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1564	if (tmp->arch->archname == archname) /* same archetype */
1476	remove_ob(tmp);	1565	tmp->destroy ();
1477	free_object(tmp);
1478	}
1479	}
1480		1566
1481	tmp1=arch_to_object(find_archetype(arch_string));	1567	object *tmp = archetype::find (archname)->instance ();
1482		1568
1483		1569	tmp->x = op->x;
1484	tmp1->x = op->x; tmp1->y = op->y;	1570	tmp->y = op->y;
		1571
1485	insert_ob_in_map(tmp1,op->map,op,0);	1572	insert_ob_in_map (tmp, op->map, op, 0);
1486	}	1573	}
1487		1574
1488	/*	1575	object *
1489	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1576	object::insert_at (object *where, object *originator, int flags)
1490	* is returned contains nr objects, and the remaining parts contains	1577	{
1491	* the rest (or is removed and freed if that number is 0).	1578	if (where->env)
1492	* On failure, NULL is returned, and the reason put into the	1579	return where->env->insert (this);
1493	* global static errmsg array.	1580	else
1494	*/	1581	return where->map->insert (this, where->x, where->y, originator, flags);
		1582	}
1495		1583
1496	object *get_split_ob(object *orig_ob, uint32 nr) {	1584	// check whether we can put this into the map, respect max_volume, max_items
1497	object *newob;	1585	bool
1498	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1586	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1587	{
		1588	mapspace &ms = m->at (x, y);
1499		1589
1500	if(orig_ob->nrof<nr) {	1590	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		1591
		1592	if (!items // testing !items ensures we can drop at least one item
		1593	|| (items < m->max_items
		1594	&& ms.volume () < m->max_volume))
1523	return newob;	1595	return true;
1524	}
1525		1596
		1597	if (originator)
		1598	originator->failmsgf (
		1599	"No matter how hard you try, you just cannot put the %s here! H<Try to remove some items from the floor first.>",
		1600	query_name ()
		1601	);
		1602
		1603	return false;
		1604	}
		1605
1526	/*	1606	/*
1527	* decrease_ob_nr(object, number) decreases a specified number from	1607	* decrease(object, number) decreases a specified number from
1528	* the amount of an object. If the amount reaches 0, the object	1608	* the amount of an object. If the amount reaches 0, the object
1529	* is subsequently removed and freed.	1609	* is subsequently removed and freed.
1530	*	1610	*
1531	* Return value: 'op' if something is left, NULL if the amount reached 0	1611	* Return value: 'op' if something is left, NULL if the amount reached 0
1532	*/	1612	*/
1533		1613	bool
1534	object *decrease_ob_nr (object *op, uint32 i)	1614	object::decrease (sint32 nr)
1535	{	1615	{
1536	object *tmp;	1616	if (!nr)
1537	player *pl;	1617	return true;
1538		1618
1539	if (i == 0) /* objects with op->nrof require this check */	1619	nr = min (nr, nrof);
		1620
		1621	if (nrof > nr)
		1622	{
		1623	weight_t oweight = total_weight ();
		1624
		1625	nrof -= nr;
		1626
		1627	if (object *pl = visible_to ())
		1628	esrv_update_item (UPD_NROF, pl, this);
		1629
		1630	adjust_weight (env, oweight, total_weight ());
		1631
		1632	return true;
		1633	}
		1634	else
		1635	{
		1636	destroy ();
		1637	return false;
		1638	}
		1639	}
		1640
		1641	/*
		1642	* split(ob,nr) splits up ob into two parts. The part which
		1643	* is returned contains nr objects, and the remaining parts contains
		1644	* the rest (or is removed and returned if that number is 0).
		1645	* On failure, NULL is returned.
		1646	*/
		1647	object *
		1648	object::split (sint32 nr)
		1649	{
		1650	int have = number_of ();
		1651
		1652	if (have < nr)
		1653	return 0;
		1654	else if (have == nr)
		1655	{
		1656	remove ();
		1657	return this;
		1658	}
		1659	else
		1660	{
		1661	decrease (nr);
		1662
		1663	object *op = deep_clone ();
		1664	op->nrof = nr;
1540	return op;	1665	return op;
1541
1542	if (i > op->nrof)
1543	i = op->nrof;
1544
1545	if (QUERY_FLAG (op, FLAG_REMOVED))
1546	{	1666	}
1547	op->nrof -= i;	1667	}
		1668
		1669	object *
		1670	insert_ob_in_ob (object *op, object *where)
		1671	{
		1672	if (!where)
1548	}	1673	{
1549	else if (op->env != NULL)	1674	char *dump = dump_object (op);
1550	{	1675	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1551	/* is this object in the players inventory, or sub container	1676	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;	1677	return op;
1604	} else {	1678	}
1605	free_object (op);	1679
1606	return NULL;	1680	if (where->head_ () != where)
1607	}	1681	{
1608	}	1682	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1609		1683	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	}	1684	}
1623	}
1624		1685
		1686	return where->insert (op);
		1687	}
		1688
1625	/*	1689	/*
1626	* insert_ob_in_ob(op,environment):	1690	* env->insert (op)
1627	* This function inserts the object op in the linked list	1691	* This function inserts the object op in the linked list
1628	* inside the object environment.	1692	* inside the object environment.
1629	*	1693	*
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	1694	* The function returns now pointer to inserted item, and return value can
1636	* be != op, if items are merged. -Tero	1695	* be != op, if items are merged. -Tero
1637	*/	1696	*/
1638		1697	object *
1639	object *insert_ob_in_ob(object *op,object *where) {	1698	object::insert (object *op)
1640	object *tmp, *otmp;	1699	{
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) {	1700	if (op->more)
		1701	{
1658	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1702	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1659	&op->name, op->count);
1660	return op;	1703	return op;
1661	}	1704	}
1662	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1705
1663	CLEAR_FLAG(op, FLAG_REMOVED);	1706	op->remove ();
		1707
		1708	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1709
1664	if(op->nrof) {	1710	if (op->nrof)
1665	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1711	for (object *tmp = inv; tmp; tmp = tmp->below)
1666	if ( CAN_MERGE(tmp,op) ) {	1712	if (object::can_merge (tmp, op))
		1713	{
1667	/* return the original object and remove inserted object	1714	/* return the original object and remove inserted object
1668	(client needs the original object) */	1715	(client prefers the original object) */
		1716
		1717	// carrying must be 0 for mergable objects
		1718	weight_t oweight = weight_t (tmp->weight) * tmp->nrof;
		1719
1669	tmp->nrof += op->nrof;	1720	tmp->nrof += op->nrof;
1670	/* Weight handling gets pretty funky. Since we are adding to	1721
1671	* tmp->nrof, we need to increase the weight.	1722	if (object *pl = tmp->visible_to ())
1672	*/	1723	esrv_update_item (UPD_NROF, pl, tmp);
1673	add_weight (where, op->weight*op->nrof);	1724
1674	SET_FLAG(op, FLAG_REMOVED);	1725	adjust_weight (this, oweight, weight_t (tmp->weight) * tmp->nrof);
1675	free_object(op); /* free the inserted object */	1726
		1727	op->destroy ();
1676	op = tmp;	1728	op = tmp;
1677	remove_ob (op); /* and fix old object's links */	1729	goto inserted;
1678	CLEAR_FLAG(op, FLAG_REMOVED);
1679	break;
1680	}	1730	}
1681		1731
1682	/* I assume combined objects have no inventory	1732	op->owner = 0; // it's his/hers now. period.
1683	* We add the weight - this object could have just been removed	1733	op->map = 0;
1684	* (if it was possible to merge). calling remove_ob will subtract	1734	op->x = 0;
1685	* the weight, so we need to add it in again, since we actually do	1735	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		1736
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;	1737	op->above = 0;
1701	op->below=NULL;	1738	op->below = inv;
1702	op->x=0,op->y=0;	1739	op->env = this;
1703		1740
		1741	if (inv)
		1742	inv->above = op;
		1743
		1744	inv = op;
		1745
		1746	op->flag [FLAG_REMOVED] = 0;
		1747
		1748	if (object *pl = op->visible_to ())
		1749	esrv_send_item (pl, op);
		1750
		1751	adjust_weight (this, 0, op->total_weight ());
		1752
		1753	inserted:
1704	/* reset the light list and los of the players on the map */	1754	/* reset the light list and los of the players on the map */
1705	if((op->glow_radius!=0)&&where->map)	1755	if (op->glow_radius && is_on_map ())
1706	{	1756	{
1707	#ifdef DEBUG_LIGHTS	1757	update_stats ();
1708	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1758	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	}	1759	}
		1760	else if (is_player ())
		1761	// if this is a player's inventory, update stats
		1762	contr->queue_stats_update ();
1713		1763
1714	/* Client has no idea of ordering so lets not bother ordering it here.	1764	INVOKE_OBJECT (INSERT, this);
1715	* It sure simplifies this function...	1765
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;	1766	return op;
1725	}	1767	}
1726		1768
1727	/*	1769	/*
1728	* Checks if any objects has a move_type that matches objects	1770	* Checks if any objects has a move_type that matches objects
…		…
1742	*	1784	*
1743	* MSW 2001-07-08: Check all objects on space, not just those below	1785	* 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	1786	* object being inserted. insert_ob_in_map may not put new objects
1745	* on top.	1787	* on top.
1746	*/	1788	*/
1747		1789	int
1748	int check_move_on (object *op, object *originator)	1790	check_move_on (object *op, object *originator, int flags)
1749	{	1791	{
		1792	if (op->flag [FLAG_NO_APPLY])
		1793	return 0;
		1794
1750	object *tmp;	1795	object *tmp;
1751	tag_t tag;
1752	mapstruct *m=op->map;	1796	maptile *m = op->map;
1753	int x=op->x, y=op->y;	1797	int x = op->x, y = op->y;
1754	MoveType move_on, move_slow, move_block;
1755		1798
1756	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1799	mapspace &ms = m->at (x, y);
1757	return 0;
1758		1800
1759	tag = op->count;	1801	ms.update ();
1760		1802
1761	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1803	MoveType move_on = ms.move_on;
1762	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1804	MoveType move_slow = ms.move_slow;
1763	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1805	MoveType move_block = ms.move_block;
1764		1806
1765	/* if nothing on this space will slow op down or be applied,	1807	/* 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	1808	* 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	1809	* is set, as lots of objects don't have it set - we treat that
1768	* as walking.	1810	* as walking.
1769	*/	1811	*/
1770	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1812	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1771	return 0;	1813	return 0;
1772		1814
1773	/* This is basically inverse logic of that below - basically,	1815	/* This is basically inverse logic of that below - basically,
1774	* if the object can avoid the move on or slow move, they do so,	1816	* 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	1817	* but can't do it if the alternate movement they are using is
1776	* blocked. Logic on this seems confusing, but does seem correct.	1818	* blocked. Logic on this seems confusing, but does seem correct.
1777	*/	1819	*/
1778	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1820	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;	1821	return 0;
1780		1822
1781	/* The objects have to be checked from top to bottom.	1823	/* The objects have to be checked from top to bottom.
1782	* Hence, we first go to the top:	1824	* Hence, we first go to the top:
1783	*/	1825	*/
1784		1826	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	}	1827	{
1793	for(;tmp!=NULL; tmp=tmp->below) {	1828	next = tmp->below;
		1829
		1830	if (tmp == op)
1794	if (tmp == op) continue; /* Can't apply yourself */	1831	continue; /* Can't apply yourself */
1795		1832
1796	/* Check to see if one of the movement types should be slowed down.	1833	/* 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	1834	* Second check makes sure that the movement types not being slowed
1798	* (~slow_move) is not blocked on this space - just because the	1835	* (~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	1836	* 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.	1837	* swim on that space, can't use it to avoid the penalty.
1801	*/	1838	*/
1802	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1839	if (!op->flag [FLAG_WIZPASS])
		1840	{
1803	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1841	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)) {	1842	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
1806		1843	{
1807	float diff;
1808
1809	diff = tmp->move_slow_penalty*FABS(op->speed);	1844	float diff = tmp->move_slow_penalty * fabs (op->speed);
1810	if (op->type == PLAYER) {	1845
		1846	if (op->is_player ())
1811	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1847	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))) {	1848	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
1813	diff /= 4.0;	1849	diff /= 4.0;
1814	}	1850
1815	}
1816	op->speed_left -= diff;	1851	op->speed_left -= diff;
1817	}	1852	}
1818	}	1853	}
1819		1854
1820	/* Basically same logic as above, except now for actual apply. */	1855	/* Basically same logic as above, except now for actual apply. */
1821	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1856	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)) {	1857	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
		1858	{
		1859	if ((flags & INS_NO_AUTO_EXIT)
		1860	&& (tmp->type == EXIT || tmp->type == TELEPORTER
		1861	|| tmp->type == HOLE || tmp->type == TRAPDOOR)) //TODO: temporary, fix exits instead
		1862	continue;
1824		1863
1825	move_apply(tmp, op, originator);	1864	move_apply (tmp, op, originator);
		1865
1826	if (was_destroyed (op, tag))	1866	if (op->destroyed ())
1827	return 1;	1867	return 1;
1828		1868
1829	/* what the person/creature stepped onto has moved the object	1869	/* what the person/creature stepped onto has moved the object
1830	* someplace new. Don't process any further - if we did,	1870	* someplace new. Don't process any further - if we did,
1831	* have a feeling strange problems would result.	1871	* have a feeling strange problems would result.
1832	*/	1872	*/
1833	if (op->map != m || op->x != x || op->y != y) return 0;	1873	if (op->map != m || op->x != x || op->y != y)
		1874	return 0;
1834	}	1875	}
1835	}	1876	}
		1877
1836	return 0;	1878	return 0;
1837	}	1879	}
1838		1880
1839	/*	1881	/*
1840	* present_arch(arch, map, x, y) searches for any objects with	1882	* present_arch(arch, map, x, y) searches for any objects with
1841	* a matching archetype at the given map and coordinates.	1883	* a matching archetype at the given map and coordinates.
1842	* The first matching object is returned, or NULL if none.	1884	* The first matching object is returned, or NULL if none.
1843	*/	1885	*/
1844		1886	object *
1845	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1887	present_arch (const archetype *at, maptile *m, int x, int y)
1846	object *tmp;	1888	{
1847	if(m==NULL || out_of_map(m,x,y)) {	1889	if (!m || out_of_map (m, x, y))
		1890	{
1848	LOG(llevError,"Present_arch called outside map.\n");	1891	LOG (llevError, "Present_arch called outside map.\n");
1849	return NULL;	1892	return NULL;
1850	}	1893	}
1851	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1894
1852	if(tmp->arch == at)	1895	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1896	if (tmp->arch->archname == at->archname)
1853	return tmp;	1897	return tmp;
		1898
1854	return NULL;	1899	return NULL;
1855	}	1900	}
1856		1901
1857	/*	1902	/*
1858	* present(type, map, x, y) searches for any objects with	1903	* present(type, map, x, y) searches for any objects with
1859	* a matching type variable at the given map and coordinates.	1904	* a matching type variable at the given map and coordinates.
1860	* The first matching object is returned, or NULL if none.	1905	* The first matching object is returned, or NULL if none.
1861	*/	1906	*/
1862		1907	object *
1863	object *present(unsigned char type,mapstruct *m, int x,int y) {	1908	present (unsigned char type, maptile *m, int x, int y)
1864	object *tmp;	1909	{
1865	if(out_of_map(m,x,y)) {	1910	if (out_of_map (m, x, y))
		1911	{
1866	LOG(llevError,"Present called outside map.\n");	1912	LOG (llevError, "Present called outside map.\n");
1867	return NULL;	1913	return NULL;
1868	}	1914	}
1869	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1915
		1916	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1870	if(tmp->type==type)	1917	if (tmp->type == type)
1871	return tmp;	1918	return tmp;
		1919
1872	return NULL;	1920	return NULL;
1873	}	1921	}
1874		1922
1875	/*	1923	/*
1876	* present_in_ob(type, object) searches for any objects with	1924	* present_in_ob(type, object) searches for any objects with
1877	* a matching type variable in the inventory of the given object.	1925	* a matching type variable in the inventory of the given object.
1878	* The first matching object is returned, or NULL if none.	1926	* The first matching object is returned, or NULL if none.
1879	*/	1927	*/
1880		1928	object *
1881	object *present_in_ob(unsigned char type, const object *op) {	1929	present_in_ob (unsigned char type, const object *op)
1882	object *tmp;	1930	{
1883	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1931	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1884	if(tmp->type==type)	1932	if (tmp->type == type)
1885	return tmp;	1933	return tmp;
		1934
1886	return NULL;	1935	return NULL;
1887	}	1936	}
1888		1937
1889	/*	1938	/*
1890	* present_in_ob (type, str, object) searches for any objects with	1939	* present_in_ob (type, str, object) searches for any objects with
…		…
1898	* str is the string to match against. Note that we match against	1947	* 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	1948	* 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	1949	* spell code can use one object type (force), but change it's name
1901	* to be unique.	1950	* to be unique.
1902	*/	1951	*/
1903		1952	object *
1904	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1953	present_in_ob_by_name (int type, const char *str, const object *op)
1905	object *tmp;	1954	{
1906
1907	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1955	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1908	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1956	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1909	return tmp;	1957	return tmp;
1910	}	1958
1911	return NULL;	1959	return 0;
1912	}	1960	}
1913		1961
1914	/*	1962	/*
1915	* present_arch_in_ob(archetype, object) searches for any objects with	1963	* present_arch_in_ob(archetype, object) searches for any objects with
1916	* a matching archetype in the inventory of the given object.	1964	* a matching archetype in the inventory of the given object.
1917	* The first matching object is returned, or NULL if none.	1965	* The first matching object is returned, or NULL if none.
1918	*/	1966	*/
1919		1967	object *
1920	object *present_arch_in_ob(const archetype *at, const object *op) {	1968	present_arch_in_ob (const archetype *at, const object *op)
1921	object *tmp;	1969	{
1922	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1970	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1923	if( tmp->arch == at)	1971	if (tmp->arch->archname == at->archname)
1924	return tmp;	1972	return tmp;
		1973
1925	return NULL;	1974	return NULL;
1926	}	1975	}
1927		1976
1928	/*	1977	/*
1929	* activate recursively a flag on an object inventory	1978	* activate recursively a flag on an object inventory
1930	*/	1979	*/
		1980	void
1931	void flag_inv(object*op, int flag){	1981	flag_inv (object *op, int flag)
1932	object *tmp;	1982	{
1933	if(op->inv)
1934	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1983	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1935	SET_FLAG(tmp, flag);	1984	{
		1985	tmp->set_flag (flag);
1936	flag_inv(tmp,flag);	1986	flag_inv (tmp, flag);
1937	}	1987	}
		1988	}
		1989
1938	}/*	1990	/*
1939	* desactivate recursively a flag on an object inventory	1991	* deactivate recursively a flag on an object inventory
1940	*/	1992	*/
		1993	void
1941	void unflag_inv(object*op, int flag){	1994	unflag_inv (object *op, int flag)
1942	object *tmp;	1995	{
1943	if(op->inv)
1944	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1996	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1945	CLEAR_FLAG(tmp, flag);	1997	{
		1998	tmp->clr_flag (flag);
1946	unflag_inv(tmp,flag);	1999	unflag_inv (tmp, flag);
1947	}	2000	}
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	}	2001	}
1961		2002
1962	/*	2003	/*
1963	* find_free_spot(object, map, x, y, start, stop) will search for	2004	* 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	2005	* a spot at the given map and coordinates which will be able to contain
…		…
1966	* to search (see the freearr_x/y[] definition).	2007	* to search (see the freearr_x/y[] definition).
1967	* It returns a random choice among the alternatives found.	2008	* 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	2009	* 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	2010	* 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)	2011	* 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	2012	* Note: This function does correctly handle tiled maps, but does not
1975	* inform the caller. However, insert_ob_in_map will update as	2013	* inform the caller. However, insert_ob_in_map will update as
1976	* necessary, so the caller shouldn't need to do any special work.	2014	* 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	2015	* 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	2016	* 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	2017	* 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	2018	* the archetype because that isn't correct if the monster has been
1981	* customized, changed states, etc.	2019	* customized, changed states, etc.
1982	*/	2020	*/
1983		2021	int
1984	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2022	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
1985	int i,index=0, flag;	2023	{
1986	static int altern[SIZEOFFREE];	2024	int altern[SIZEOFFREE];
		2025	int index = 0;
1987		2026
1988	for(i=start;i<stop;i++) {	2027	for (int i = start; i < stop; i++)
1989	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2028	{
1990	if(!flag)	2029	mapxy pos (m, x, y); pos.move (i);
		2030
		2031	if (!pos.normalise ())
		2032	continue;
		2033
		2034	mapspace &ms = *pos;
		2035
		2036	if (ms.flags () & P_IS_ALIVE)
		2037	continue;
		2038
		2039	/* However, often
		2040	* ob doesn't have any move type (when used to place exits)
		2041	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2042	*/
		2043	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2044	{
1991	altern[index++]=i;	2045	altern [index++] = i;
		2046	continue;
		2047	}
1992		2048
1993	/* Basically, if we find a wall on a space, we cut down the search size.	2049	/* 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.	2050	* 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 -	2051	* 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	2052	* 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	2053	* spaces in all the other directions, this will reduce the search space
1998	* to only the spaces immediately surrounding the target area, and	2054	* to only the spaces immediately surrounding the target area, and
1999	* won't look 2 spaces south of the target space.	2055	* won't look 2 spaces south of the target space.
2000	*/	2056	*/
2001	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2057	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2058	{
2002	stop=maxfree[i];	2059	stop = maxfree[i];
2003	}	2060	continue;
2004	if(!index) return -1;	2061	}
2005	return altern[RANDOM()%index];
2006	}
2007		2062
		2063	/* Note it is intentional that we check ob - the movement type of the
		2064	* head of the object should correspond for the entire object.
		2065	*/
		2066	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2067	continue;
		2068
		2069	if (ob->blocked (pos.m, pos.x, pos.y))
		2070	continue;
		2071
		2072	altern [index++] = i;
		2073	}
		2074
		2075	if (!index)
		2076	return -1;
		2077
		2078	return altern [rndm (index)];
		2079	}
		2080
2008	/*	2081	/*
2009	* find_first_free_spot(archetype, mapstruct, x, y) works like	2082	* find_first_free_spot(archetype, maptile, x, y) works like
2010	* find_free_spot(), but it will search max number of squares.	2083	* find_free_spot(), but it will search max number of squares.
2011	* But it will return the first available spot, not a random choice.	2084	* 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.	2085	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2013	*/	2086	*/
2014		2087	int
2015	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2088	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2016	int i;	2089	{
2017	for(i=0;i<SIZEOFFREE;i++) {	2090	for (int i = 0; i < SIZEOFFREE; i++)
2018	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2091	if (!ob->blocked (m, x + DIRX (i), y + DIRY (i)))
2019	return i;	2092	return i;
2020	}	2093
2021	return -1;	2094	return -1;
2022	}	2095	}
2023		2096
2024	/*	2097	/*
2025	* The function permute(arr, begin, end) randomly reorders the array	2098	* The function permute(arr, begin, end) randomly reorders the array
2026	* arr[begin..end-1].	2099	* arr[begin..end-1].
		2100	* now uses a fisher-yates shuffle, old permute was broken
2027	*/	2101	*/
		2102	static void
2028	static void permute(int *arr, int begin, int end)	2103	permute (int *arr, int begin, int end)
2029	{	2104	{
2030	int i, j, tmp, len;	2105	arr += begin;
		2106	end -= begin;
2031		2107
2032	len = end-begin;	2108	while (--end)
2033	for(i = begin; i < end; i++)	2109	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	}	2110	}
2042		2111
2043	/* new function to make monster searching more efficient, and effective!	2112	/* new function to make monster searching more efficient, and effective!
2044	* This basically returns a randomized array (in the passed pointer) of	2113	* 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	2114	* 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	2115	* 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	2116	* 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.	2117	* the 3x3 area will be searched, just not in a predictable order.
2049	*/	2118	*/
		2119	void
2050	void get_search_arr(int *search_arr)	2120	get_search_arr (int *search_arr)
2051	{	2121	{
2052	int i;	2122	int i;
2053		2123
2054	for(i = 0; i < SIZEOFFREE; i++)	2124	for (i = 0; i < SIZEOFFREE; i++)
2055	{
2056	search_arr[i] = i;	2125	search_arr[i] = i;
2057	}
2058		2126
2059	permute(search_arr, 1, SIZEOFFREE1+1);	2127	permute (search_arr, 1, SIZEOFFREE1 + 1);
2060	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2128	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2061	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2129	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2062	}	2130	}
2063		2131
2064	/*	2132	/*
2065	* find_dir(map, x, y, exclude) will search some close squares in the	2133	* find_dir(map, x, y, exclude) will search some close squares in the
2066	* given map at the given coordinates for live objects.	2134	* given map at the given coordinates for live objects.
…		…
2071	* Perhaps incorrectly, but I'm making the assumption that exclude	2139	* 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	2140	* 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	2141	* because we have to know what movement the thing looking to move
2074	* there is capable of.	2142	* there is capable of.
2075	*/	2143	*/
2076		2144	int
2077	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2145	find_dir (maptile *m, int x, int y, object *exclude)
		2146	{
2078	int i,max=SIZEOFFREE, mflags;	2147	int max = SIZEOFFREE;
2079	sint16 nx, ny;
2080	object *tmp;
2081	mapstruct *mp;
2082	MoveType blocked, move_type;	2148	MoveType move_type;
2083		2149
2084	if (exclude && exclude->head) {	2150	if (exclude && exclude->head_ () != exclude)
		2151	{
2085	exclude = exclude->head;	2152	exclude = exclude->head;
2086	move_type = exclude->move_type;	2153	move_type = exclude->move_type;
2087	} else {	2154	}
		2155	else
		2156	{
2088	/* If we don't have anything, presume it can use all movement types. */	2157	/* If we don't have anything, presume it can use all movement types. */
2089	move_type=MOVE_ALL;	2158	move_type = MOVE_ALL;
		2159	}
		2160
		2161	for (int i = 1; i < max; i++)
2090	}	2162	{
		2163	mapxy pos (m, x, y);
		2164	pos.move (i);
2091		2165
2092	for(i=1;i<max;i++) {	2166	if (!pos.normalise ())
2093	mp = m;
2094	nx = x + freearr_x[i];	2167	max = maxfree[i];
2095	ny = y + freearr_y[i];	2168	else
		2169	{
		2170	mapspace &ms = *pos;
2096		2171
2097	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2172	if ((move_type & ms.move_block) == move_type)
2098	if (mflags & P_OUT_OF_MAP) {
2099	max = maxfree[i];	2173	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) {	2174	else if (ms.flags () & P_IS_ALIVE)
2106	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2175	{
2107	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2176	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2177	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2108	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2178	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2109	break;
2110	}
2111	}
2112	if(tmp) {
2113	return freedir[i];	2179	return freedir [i];
2114	}
2115	}	2180	}
2116	}	2181	}
2117	}	2182	}
		2183
2118	return 0;	2184	return 0;
2119	}	2185	}
2120		2186
2121	/*	2187	/*
2122	* distance(object 1, object 2) will return the square of the	2188	* distance(object 1, object 2) will return the square of the
2123	* distance between the two given objects.	2189	* distance between the two given objects.
2124	*/	2190	*/
2125		2191	int
2126	int distance(const object *ob1, const object *ob2) {	2192	distance (const object *ob1, const object *ob2)
2127	int i;	2193	{
2128	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2194	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	}	2195	}
2132		2196
2133	/*	2197	/*
2134	* find_dir_2(delta-x,delta-y) will return a direction in which	2198	* find_dir_2(delta-x,delta-y) will return a direction value
2135	* an object which has subtracted the x and y coordinates of another	2199	* for running into direct [dx, dy].
2136	* object, needs to travel toward it.	2200	* (the opposite of crossfire's find_dir_2!)
2137	*/	2201	*/
2138		2202	int
2139	int find_dir_2(int x, int y) {	2203	find_dir_2 (int x, int y)
		2204	{
		2205	#if 1 // new algorithm
		2206	// this works by putting x, y into 16 sectors, which
		2207	// are not equal sized, but are a better approximation
		2208	// then the old algorithm, and then using a mapping
		2209	// table to map it into a direction value.
		2210	// basically, it maps these comparisons to each bit
		2211	// bit #3: x < 0
		2212	// bit #2: y < 0
		2213	// bit #1: x > y
		2214	// bit #0: x > 2y
		2215
		2216	static const uint8 dir[16] = {
		2217	4, 5, 4, 3,
		2218	2, 1, 2, 3,
		2219	6, 5, 6, 7,
		2220	8, 1, 8, 7,
		2221	};
		2222	int sector = 0;
		2223
		2224	// this is a bit ugly, but more likely to result in branchless code
		2225	sector |= x < 0 ? 8 : 0;
		2226	x = x < 0 ? -x : x; // abs
		2227
		2228	sector |= y < 0 ? 4 : 0;
		2229	y = y < 0 ? -y : y; // abs
		2230
		2231	if (x > y)
		2232	{
		2233	sector |= 2;
		2234
		2235	if (x > y * 2)
		2236	sector |= 1;
		2237	}
		2238	else
		2239	{
		2240	if (y > x * 2)
		2241	sector |= 1;
		2242	else if (!y)
		2243	return 0; // x == 0 here
		2244	}
		2245
		2246	return dir [sector];
		2247	#else // old algorithm
2140	int q;	2248	int q;
2141		2249
2142	if(y)	2250	if (y)
2143	q=x*100/y;	2251	q = 128 * x / y;
2144	else if (x)	2252	else if (x)
2145	q= -300*x;	2253	q = -512 * x; // to make it > 309
2146	else	2254	else
2147	return 0;	2255	return 0;
2148		2256
2149	if(y>0) {	2257	if (y > 0)
2150	if(q < -242)	2258	{
		2259	if (q < -309) return 7;
		2260	if (q < -52) return 6;
		2261	if (q < 52) return 5;
		2262	if (q < 309) return 4;
		2263
2151	return 3 ;	2264	return 3;
2152	if (q < -41)	2265	}
		2266	else
		2267	{
		2268	if (q < -309) return 3;
		2269	if (q < -52) return 2;
		2270	if (q < 52) return 1;
		2271	if (q < 309) return 8;
		2272
2153	return 2 ;	2273	return 7;
2154	if (q < 41)
2155	return 1 ;
2156	if (q < 242)
2157	return 8 ;
2158	return 7 ;
2159	}	2274	}
2160		2275	#endif
2161	if (q < -242)
2162	return 7 ;
2163	if (q < -41)
2164	return 6 ;
2165	if (q < 41)
2166	return 5 ;
2167	if (q < 242)
2168	return 4 ;
2169
2170	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	}	2276	}
2184		2277
2185	/*	2278	/*
2186	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2279	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2187	* between two directions (which are expected to be absolute (see absdir())	2280	* between two directions (which are expected to be absolute (see absdir())
2188	*/	2281	*/
2189		2282	int
2190	int dirdiff(int dir1, int dir2) {	2283	dirdiff (int dir1, int dir2)
2191	int d;	2284	{
2192	d = abs(dir1 - dir2);	2285	int d = abs (dir1 - dir2);
2193	if(d>4)	2286
2194	d = 8 - d;	2287	return d > 4 ? 8 - d : d;
2195	return d;
2196	}	2288	}
2197		2289
2198	/* peterm:	2290	/* peterm:
2199	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2291	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
2200	* Basically, this is a table of directions, and what directions	2292	* Basically, this is a table of directions, and what directions
…		…
2202	* This basically means that if direction is 15, then it could either go	2294	* 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.	2295	* 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	2296	* Moved from spell_util.c to object.c with the other related direction
2205	* functions.	2297	* functions.
2206	*/	2298	*/
2207
2208	int reduction_dir[SIZEOFFREE][3] = {	2299	static const int reduction_dir[SIZEOFFREE][3] = {
2209	{0,0,0}, /* 0 */	2300	{0, 0, 0}, /* 0 */
2210	{0,0,0}, /* 1 */	2301	{0, 0, 0}, /* 1 */
2211	{0,0,0}, /* 2 */	2302	{0, 0, 0}, /* 2 */
2212	{0,0,0}, /* 3 */	2303	{0, 0, 0}, /* 3 */
2213	{0,0,0}, /* 4 */	2304	{0, 0, 0}, /* 4 */
2214	{0,0,0}, /* 5 */	2305	{0, 0, 0}, /* 5 */
2215	{0,0,0}, /* 6 */	2306	{0, 0, 0}, /* 6 */
2216	{0,0,0}, /* 7 */	2307	{0, 0, 0}, /* 7 */
2217	{0,0,0}, /* 8 */	2308	{0, 0, 0}, /* 8 */
2218	{8,1,2}, /* 9 */	2309	{8, 1, 2}, /* 9 */
2219	{1,2,-1}, /* 10 */	2310	{1, 2, -1}, /* 10 */
2220	{2,10,12}, /* 11 */	2311	{2, 10, 12}, /* 11 */
2221	{2,3,-1}, /* 12 */	2312	{2, 3, -1}, /* 12 */
2222	{2,3,4}, /* 13 */	2313	{2, 3, 4}, /* 13 */
2223	{3,4,-1}, /* 14 */	2314	{3, 4, -1}, /* 14 */
2224	{4,14,16}, /* 15 */	2315	{4, 14, 16}, /* 15 */
2225	{5,4,-1}, /* 16 */	2316	{5, 4, -1}, /* 16 */
2226	{4,5,6}, /* 17 */	2317	{4, 5, 6}, /* 17 */
2227	{6,5,-1}, /* 18 */	2318	{6, 5, -1}, /* 18 */
2228	{6,20,18}, /* 19 */	2319	{6, 20, 18}, /* 19 */
2229	{7,6,-1}, /* 20 */	2320	{7, 6, -1}, /* 20 */
2230	{6,7,8}, /* 21 */	2321	{6, 7, 8}, /* 21 */
2231	{7,8,-1}, /* 22 */	2322	{7, 8, -1}, /* 22 */
2232	{8,22,24}, /* 23 */	2323	{8, 22, 24}, /* 23 */
2233	{8,1,-1}, /* 24 */	2324	{8, 1, -1}, /* 24 */
2234	{24,9,10}, /* 25 */	2325	{24, 9, 10}, /* 25 */
2235	{9,10,-1}, /* 26 */	2326	{9, 10, -1}, /* 26 */
2236	{10,11,-1}, /* 27 */	2327	{10, 11, -1}, /* 27 */
2237	{27,11,29}, /* 28 */	2328	{27, 11, 29}, /* 28 */
2238	{11,12,-1}, /* 29 */	2329	{11, 12, -1}, /* 29 */
2239	{12,13,-1}, /* 30 */	2330	{12, 13, -1}, /* 30 */
2240	{12,13,14}, /* 31 */	2331	{12, 13, 14}, /* 31 */
2241	{13,14,-1}, /* 32 */	2332	{13, 14, -1}, /* 32 */
2242	{14,15,-1}, /* 33 */	2333	{14, 15, -1}, /* 33 */
2243	{33,15,35}, /* 34 */	2334	{33, 15, 35}, /* 34 */
2244	{16,15,-1}, /* 35 */	2335	{16, 15, -1}, /* 35 */
2245	{17,16,-1}, /* 36 */	2336	{17, 16, -1}, /* 36 */
2246	{18,17,16}, /* 37 */	2337	{18, 17, 16}, /* 37 */
2247	{18,17,-1}, /* 38 */	2338	{18, 17, -1}, /* 38 */
2248	{18,19,-1}, /* 39 */	2339	{18, 19, -1}, /* 39 */
2249	{41,19,39}, /* 40 */	2340	{41, 19, 39}, /* 40 */
2250	{19,20,-1}, /* 41 */	2341	{19, 20, -1}, /* 41 */
2251	{20,21,-1}, /* 42 */	2342	{20, 21, -1}, /* 42 */
2252	{20,21,22}, /* 43 */	2343	{20, 21, 22}, /* 43 */
2253	{21,22,-1}, /* 44 */	2344	{21, 22, -1}, /* 44 */
2254	{23,22,-1}, /* 45 */	2345	{23, 22, -1}, /* 45 */
2255	{45,47,23}, /* 46 */	2346	{45, 47, 23}, /* 46 */
2256	{23,24,-1}, /* 47 */	2347	{23, 24, -1}, /* 47 */
2257	{24,9,-1}}; /* 48 */	2348	{24, 9, -1}
		2349	}; /* 48 */
2258		2350
2259	/* Recursive routine to step back and see if we can	2351	/* Recursive routine to step back and see if we can
2260	* find a path to that monster that we found. If not,	2352	* find a path to that monster that we found. If not,
2261	* we don't bother going toward it. Returns 1 if we	2353	* we don't bother going toward it. Returns 1 if we
2262	* can see a direct way to get it	2354	* can see a direct way to get it
2263	* Modified to be map tile aware -.MSW	2355	* Modified to be map tile aware -.MSW
2264	*/	2356	*/
2265		2357	int
2266
2267	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2358	can_see_monsterP (maptile *m, int x, int y, int dir)
		2359	{
2268	sint16 dx, dy;	2360	sint16 dx, dy;
2269	int mflags;	2361	int mflags;
2270		2362
		2363	if (dir < 0)
2271	if(dir<0) return 0; /* exit condition: invalid direction */	2364	return 0; /* exit condition: invalid direction */
2272		2365
2273	dx = x + freearr_x[dir];	2366	dx = x + DIRX (dir);
2274	dy = y + freearr_y[dir];	2367	dy = y + DIRY (dir);
2275		2368
2276	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2369	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2277		2370
2278	/* This functional arguably was incorrect before - it was	2371	/* This functional arguably was incorrect before - it was
2279	* checking for P_WALL - that was basically seeing if	2372	* checking for P_WALL - that was basically seeing if
2280	* we could move to the monster - this is being more	2373	* we could move to the monster - this is being more
2281	* literal on if we can see it. To know if we can actually	2374	* 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	2375	* move to the monster, we'd need the monster passed in or
2283	* at least its move type.	2376	* at least its move type.
2284	*/	2377	*/
2285	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2378	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2379	return 0;
2286		2380
2287	/* yes, can see. */	2381	/* yes, can see. */
2288	if(dir < 9) return 1;	2382	if (dir < 9)
		2383	return 1;
		2384
2289	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2385	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2290	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2386	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2291	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2387	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2292	}	2388	}
2293		2389
2294
2295
2296	/*	2390	/*
2297	* can_pick(picker, item): finds out if an object is possible to be	2391	* 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	2392	* picked up by the picker. Returnes 1 if it can be
2299	* picked up, otherwise 0.	2393	* picked up, otherwise 0.
2300	*	2394	*
2301	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2395	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2302	* core dumps if they do.	2396	* core dumps if they do.
2303	*	2397	*
2304	* Add a check so we can't pick up invisible objects (0.93.8)	2398	* Add a check so we can't pick up invisible objects (0.93.8)
2305	*/	2399	*/
2306		2400	int
2307	int can_pick(const object *who, const object *item) {	2401	can_pick (const object *who, const object *item)
2308	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2402	{
2309	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2403	return /*who->flag [FLAG_WIZ]|| */
2310	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2404	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2311	(who->type==PLAYER||item->weight<who->weight/3));	2405	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2312	}	2406	}
2313		2407
		2408	//-GPL
2314		2409
2315	/*	2410	/*
2316	* create clone from object to another	2411	* create clone from object to another
2317	*/	2412	*/
2318	object *object_create_clone (object *asrc) {	2413	object *
2319	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2414	object::deep_clone ()
		2415	{
		2416	assert (("deep_clone called on non-head object", is_head ()));
2320		2417
2321	if(!asrc) return NULL;	2418	object *dst = clone ();
2322	src = asrc;
2323	if(src->head)
2324	src = src->head;
2325		2419
2326	prev = NULL;	2420	object *prev = dst;
2327	for(part = src; part; part = part->more) {	2421	for (object *part = this->more; part; part = part->more)
2328	tmp = get_object();	2422	{
2329	copy_object(part,tmp);	2423	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;	2424	tmp->head = dst;
2337	}
2338	tmp->more = NULL;
2339	if(prev)
2340	prev->more = tmp;	2425	prev->more = tmp;
2341	prev = tmp;	2426	prev = tmp;
2342	}	2427	}
2343	/*** copy inventory ***/	2428
2344	for(item = src->inv; item; item = item->below) {	2429	for (object *item = inv; item; item = item->below)
2345	(void) insert_ob_in_ob(object_create_clone(item),dst);	2430	insert_ob_in_ob (item->deep_clone (), dst);
2346	}
2347		2431
2348	return dst;	2432	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	}	2433	}
2393		2434
2394	/* This returns the first object in who's inventory that	2435	/* This returns the first object in who's inventory that
2395	* has the same type and subtype match.	2436	* has the same type and subtype match.
2396	* returns NULL if no match.	2437	* returns NULL if no match.
2397	*/	2438	*/
		2439	object *
2398	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2440	find_obj_by_type_subtype (const object *who, int type, int subtype)
2399	{	2441	{
2400	object *tmp;
2401
2402	for (tmp=who->inv; tmp; tmp=tmp->below)	2442	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2403	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2443	if (tmp->type == type && tmp->subtype == subtype)
		2444	return tmp;
2404		2445
2405	return NULL;	2446	return 0;
2406	}	2447	}
2407		2448
2408	/* If ob has a field named key, return the link from the list,	2449	/* Zero the key_values on op, decrementing the shared-string
2409	* otherwise return NULL.	2450	* refcounts and freeing the links.
2410	*	2451	*/
2411	* key must be a passed in shared string - otherwise, this won't	2452	void
2412	* do the desired thing.	2453	key_values::clear ()
2413	*/	2454	{
2414	key_value * get_ob_key_link(const object * ob, const char * key) {	2455	for (key_value *kvp = first; kvp; )
2415	key_value * link;
2416		2456	{
2417	for (link = ob->key_values; link != NULL; link = link->next) {	2457	key_value *next = kvp->next;
		2458	delete kvp;
		2459	kvp = next;
		2460	}
		2461
		2462	first = 0;
		2463	}
		2464
		2465	shstr_tmp
		2466	key_values::get (shstr_tmp key) const
		2467	{
		2468	for (key_value *kv = first; kv; kv = kv->next)
2418	if (link->key == key) {	2469	if (kv->key == key)
		2470	return kv->value;
		2471
		2472	return shstr ();
		2473	}
		2474
		2475	void
		2476	key_values::add (shstr_tmp key, shstr_tmp value)
		2477	{
		2478	key_value *kv = new key_value;
		2479
		2480	kv->next = first;
		2481	kv->key = key;
		2482	kv->value = value;
		2483
		2484	first = kv;
		2485	}
		2486
		2487	void
		2488	key_values::set (shstr_tmp key, shstr_tmp value)
		2489	{
		2490	for (key_value *kv = first; kv; kv = kv->next)
		2491	if (kv->key == key)
		2492	{
		2493	kv->value = value;
2419	return link;	2494	return;
		2495	}
		2496
		2497	add (key, value);
		2498	}
		2499
		2500	void
		2501	key_values::del (shstr_tmp key)
		2502	{
		2503	for (key_value **kvp = &first; *kvp; kvp = &(*kvp)->next)
		2504	if ((*kvp)->key == key)
		2505	{
		2506	key_value *kv = *kvp;
		2507	*kvp = (*kvp)->next;
		2508	delete kv;
		2509	return;
		2510	}
		2511	}
		2512
		2513	void
		2514	key_values::reverse ()
		2515	{
		2516	key_value *prev = 0;
		2517	key_value *head = first;
		2518
		2519	while (head)
		2520	{
		2521	key_value *node = head;
		2522	head = head->next;
		2523	node->next = prev;
		2524	prev = node;
		2525	}
		2526
		2527	first = prev;
		2528	}
		2529
		2530	key_values &
		2531	key_values::operator =(const key_values &kv)
		2532	{
		2533	clear ();
		2534
		2535	for (key_value *kvp = kv.first; kvp; kvp = kvp->next)
		2536	add (kvp->key, kvp->value);
		2537
		2538	reverse ();
		2539
		2540	return *this;
		2541	}
		2542
		2543	object::depth_iterator::depth_iterator (object *container)
		2544	: iterator_base (container)
		2545	{
		2546	while (item->inv)
		2547	item = item->inv;
		2548	}
		2549
		2550	void
		2551	object::depth_iterator::next ()
		2552	{
		2553	if (item->below)
		2554	{
		2555	item = item->below;
		2556
		2557	while (item->inv)
		2558	item = item->inv;
		2559	}
		2560	else
		2561	item = item->env;
		2562	}
		2563
		2564	const char *
		2565	object::flag_desc (char *desc, int len) const
		2566	{
		2567	char *p = desc;
		2568	bool first = true;
		2569
		2570	*p = 0;
		2571
		2572	for (int i = 0; i < NUM_FLAGS; i++)
		2573	{
		2574	if (len <= 10) // magic constant!
		2575	{
		2576	snprintf (p, len, ",...");
		2577	break;
2420	}	2578	}
2421	}
2422
2423	return NULL;
2424	}
2425		2579
2426	/*	2580	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	*/	2581	{
2445	return NULL;	2582	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2446	}	2583	len -= cnt;
2447		2584	p += cnt;
2448	/* This is copied from get_ob_key_link() above -	2585	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	}	2586	}
2455	}	2587	}
		2588
		2589	return desc;
		2590	}
		2591
		2592	// return a suitable string describing an object in enough detail to find it
		2593	const char *
		2594	object::debug_desc (char *info) const
		2595	{
		2596	char flagdesc[512];
		2597	char info2[256 * 4];
		2598	char *p = info;
		2599
		2600	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2601	count,
		2602	uuid.c_str (),
		2603	&name,
		2604	title ? ",title:\"" : "",
		2605	title ? (const char *)title : "",
		2606	title ? "\"" : "",
		2607	flag_desc (flagdesc, 512), type);
		2608
		2609	if (!flag[FLAG_REMOVED] && env)
		2610	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2611
		2612	if (map)
		2613	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2614
		2615	return info;
		2616	}
		2617
		2618	const char *
		2619	object::debug_desc () const
		2620	{
		2621	static char info[3][256 * 4];
		2622	static int info_idx;
		2623
		2624	return debug_desc (info [++info_idx % 3]);
		2625	}
		2626
		2627	struct region *
		2628	object::region () const
		2629	{
		2630	return map ? map->region (x, y)
		2631	: region::default_region ();
		2632	}
		2633
		2634	//+GPL
		2635
		2636	void
		2637	object::open_container (object *new_container)
		2638	{
		2639	if (container == new_container)
2456	return NULL;	2640	return;
2457	}
2458		2641
		2642	object *old_container = container;
2459		2643
2460	/*	2644	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		2645	{
2473	for (field=op->key_values; field != NULL; field=field->next) {	2646	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2474	if (field->key != canonical_key) {	2647	return;
2475	last = field;	2648
2476	continue;	2649	#if 0
		2650	// remove the "Close old_container" object.
		2651	if (object *closer = old_container->inv)
		2652	if (closer->type == CLOSE_CON)
		2653	closer->destroy ();
		2654	#endif
		2655
		2656	// make sure the container is available
		2657	esrv_send_item (this, old_container);
		2658
		2659	old_container->flag [FLAG_APPLIED] = false;
		2660	container = 0;
		2661
		2662	// client needs item update to make it work, client bug requires this to be separate
		2663	esrv_update_item (UPD_FLAGS, this, old_container);
		2664
		2665	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2666	play_sound (sound_find ("chest_close"));
		2667	}
		2668
		2669	if (new_container)
		2670	{
		2671	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2672	return;
		2673
		2674	// TODO: this does not seem to serve any purpose anymore?
		2675	#if 0
		2676	// insert the "Close Container" object.
		2677	if (archetype *closer = new_container->other_arch)
		2678	{
		2679	object *closer = new_container->other_arch->instance ();
		2680	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2681	new_container->insert (closer);
2477	}	2682	}
		2683	#endif
		2684
		2685	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2686
		2687	// make sure the container is available, client bug requires this to be separate
		2688	esrv_send_item (this, new_container);
		2689
		2690	new_container->flag [FLAG_APPLIED] = true;
		2691	container = new_container;
		2692
		2693	// client needs flag change
		2694	esrv_update_item (UPD_FLAGS, this, new_container);
		2695	esrv_send_inventory (this, new_container);
		2696	play_sound (sound_find ("chest_open"));
2478		2697	}
2479	if (value)	2698	// else if (!old_container->env && contr && contr->ns)
2480	field->value = value;	2699	// contr->ns->floorbox_reset ();
2481	else {	2700	}
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		2701
2494	delete field;	2702	//-GPL
2495	}
2496	}
2497	return TRUE;
2498	}
2499	/* IF we get here, key doesn't exist */
2500		2703
2501	/* No field, we'll have to add it. */	2704	// prefetch some flat area around the player
		2705	static void
		2706	prefetch_surrounding_area (object *op, maptile *map, int range)
		2707	{
		2708	for (maprect *rect = map->split_to_tiles (mapwalk_buf,
		2709	op->x - range , op->y - range ,
		2710	op->x + range + 1, op->y + range + 1);
		2711	rect->m;
		2712	++rect)
2502		2713	{
2503	if (!add_key) {	2714	rect->m->touch ();
2504	return FALSE;	2715	rect->m->activate ();
2505	}
2506	/* There isn't any good reason to store a null
2507	* value in the key/value list. If the archetype has
2508	* this key, then we should also have it, so shouldn't
2509	* be here. If user wants to store empty strings,
2510	* should pass in ""
2511	*/
2512	if (value == NULL) return TRUE;
2513		2716	}
2514	field = new key_value;	2717	}
		2718
		2719	// prefetch a generous area around the player, also up and down
		2720	void
		2721	object::prefetch_surrounding_maps ()
		2722	{
		2723	prefetch_surrounding_area (this, map, 40);
		2724
		2725	if (maptile *m = map->tile_available (TILE_DOWN))
		2726	prefetch_surrounding_area (this, m, 20);
		2727
		2728	if (maptile *m = map->tile_available (TILE_UP))
		2729	prefetch_surrounding_area (this, m, 20);
		2730	}
		2731
		2732	//+GPL
		2733
		2734	object *
		2735	object::force_find (shstr_tmp name)
		2736	{
		2737	/* cycle through his inventory to look for the MARK we want to
		2738	* place
		2739	*/
		2740	for (object *tmp = inv; tmp; tmp = tmp->below)
		2741	if (tmp->type == FORCE && tmp->slaying == name)
		2742	return splay (tmp);
		2743
		2744	return 0;
		2745	}
		2746
		2747	void
		2748	object::force_set_timer (int duration)
		2749	{
		2750	this->duration = 1;
		2751	this->speed_left = -1.f;
		2752
		2753	this->set_speed (duration ? 1.f / duration : 0.f);
		2754	}
		2755
		2756	object *
		2757	object::force_add (shstr_tmp name, int duration)
		2758	{
		2759	if (object *force = force_find (name))
		2760	force->destroy ();
		2761
		2762	object *force = archetype::get (FORCE_NAME);
		2763
		2764	force->slaying = name;
		2765	force->force_set_timer (duration);
		2766	force->flag [FLAG_APPLIED] = true;
		2767
		2768	return insert (force);
		2769	}
		2770
		2771	void
		2772	object::play_sound (faceidx sound) const
		2773	{
		2774	if (!sound)
		2775	return;
		2776
		2777	if (is_on_map ())
		2778	map->play_sound (sound, x, y);
		2779	else if (object *pl = in_player ())
		2780	pl->contr->play_sound (sound);
		2781	}
		2782
		2783	void
		2784	object::say_msg (const char *msg) const
		2785	{
		2786	if (is_on_map ())
		2787	map->say_msg (msg, x, y);
		2788	else if (object *pl = in_player ())
		2789	pl->contr->play_sound (sound);
		2790	}
		2791
		2792	void
		2793	object::make_noise ()
		2794	{
		2795	// we do not model noise in the map, so instead put
		2796	// a temporary light into the noise source
		2797	// could use the map instead, but that's less reliable for our
		2798	// goal, which is to make invisibility a bit harder to exploit
		2799
		2800	// currently only works sensibly for players
		2801	if (!is_player ())
		2802	return;
		2803
		2804	// find old force, or create new one
		2805	object *force = force_find (shstr_noise_force);
		2806
		2807	if (force)
		2808	force->speed_left = -1.f; // patch old speed up
		2809	else
2515		2810	{
2516	field->key = canonical_key;	2811	force = archetype::get (shstr_noise_force);
2517	field->value = value;	2812
2518	/* Usual prepend-addition. */	2813	force->slaying = shstr_noise_force;
2519	field->next = op->key_values;	2814	force->stats.food = 1;
2520	op->key_values = field;	2815	force->speed_left = -1.f;
		2816
		2817	force->set_speed (1.f / 4.f);
		2818	force->flag [FLAG_IS_USED_UP] = true;
		2819	force->flag [FLAG_APPLIED] = true;
		2820
		2821	insert (force);
2521		2822	}
		2823	}
		2824
		2825	void object::change_move_type (MoveType mt)
		2826	{
		2827	if (move_type == mt)
		2828	return;
		2829
		2830	if (is_on_map ())
		2831	{
		2832	// we are on the map, so handle move_on/off effects
		2833	remove ();
		2834	move_type = mt;
		2835	map->insert (this, x, y, this);
		2836	}
		2837	else
		2838	move_type = mt;
		2839	}
		2840
		2841	/* object should be a player.
		2842	* we return the object the player has marked with the 'mark' command
		2843	* below. If no match is found (or object has changed), we return
		2844	* NULL. We leave it up to the calling function to print messages if
		2845	* nothing is found.
		2846	*/
		2847	object *
		2848	object::mark () const
		2849	{
		2850	if (contr && contr->mark && contr->mark->env == this)
		2851	return contr->mark;
		2852	else
2522	return TRUE;	2853	return 0;
2523	}	2854	}
2524		2855
2525	/*	2856	// put marked object first in the inventory
2526	* Updates the key in op to value.	2857	// this is used by identify-like spells so players can influence
2527	*	2858	// the order a bit.
2528	* If add_key is FALSE, this will only update existing keys,	2859	void
2529	* and not add new ones.	2860	object::splay_marked ()
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	{	2861	{
2536	shstr key_ (key);	2862	if (object *marked = mark ())
2537	return set_ob_key_value_s (op, key_, value, add_key);	2863	splay (marked);
2538	}	2864	}
		2865

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