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Comparing deliantra/server/common/object.C (file contents):
Revision 1.12 by elmex, Sun Sep 3 14:33:47 2006 UTC vs.
Revision 1.366 by root, Sat Nov 17 23:40:00 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 1.12 2006/09/03 14:33:47 elmex 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	#ifdef MEMORY_DEBUG
43	int nroffreeobjects = 0;
44	int nrofallocobjects = 0;
45	#undef OBJ_EXPAND
46	#define OBJ_EXPAND 1
47	#else
48	object objarray[STARTMAX]; /* All objects, allocated this way at first */
49	int nroffreeobjects = STARTMAX; /* How many OBs allocated and free (free) */
50	int nrofallocobjects = STARTMAX; /* How many OBs allocated (free + used) */
51	#endif
52		32
53	object *objects; /* Pointer to the list of used objects */	33	#include <bitset>
54	object *free_objects; /* Pointer to the list of unused objects */
55	object *active_objects; /* List of active objects that need to be processed */
56		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
57	short freearr_x[SIZEOFFREE]=	51	int freearr_x[SIZEOFFREE] = {
58	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,	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,
59	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	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	};
60	short freearr_y[SIZEOFFREE]=	57	int freearr_y[SIZEOFFREE] = {
61	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	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,
62	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	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
63	int maxfree[SIZEOFFREE]=	62	};
64	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,
65	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};
66	int freedir[SIZEOFFREE]= {	63	int freedir[SIZEOFFREE] = {
67	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	64	0,
68	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	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	};
69		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 (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	}
70		234
71	/* 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
72	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)
73	key_value * wants_field;	238	{
74
75	/* 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
76	* 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
77	* different structure or at least keep the lists sorted...	241	* different structure or at least keep the lists sorted...
78	*/	242	*/
79		243
80	/* For each field in wants, */	244	/* For each field in wants, */
81	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)
82	key_value * has_field;	246	if (has->kv.get (kv->key) != kv->value)
83		247	return false;
84	/* Look for a field in has with the same key. */	248
85	has_field = get_ob_key_link(has, wants_field->key);
86
87	if (has_field == NULL) {
88	/* No field with that name. */
89	return FALSE;
90	}
91
92	/* Found the matching field. */
93	if (has_field->value != wants_field->value) {
94	/* Values don't match, so this half of the comparison is false. */
95	return FALSE;
96	}
97
98	/* If we get here, we found a match. Now for the next field in wants. */
99	}
100
101	/* If we get here, every field in wants has a matching field in has. */	249	/* If we get here, every field in wants has a matching field in has. */
102	return TRUE;	250	return true;
103	}	251	}
104		252
105	/* 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
106	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	255	compare_ob_value_lists (const object *ob1, const object *ob2)
		256	{
107	/* 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,
108	* so we need to run the comparison *twice*. :(	258	* so we need to run the comparison *twice*. :(
109	*/	259	*/
110	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);
111	}	262	}
112		263
113	/* 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
114	* they can be merged together.	265	* they can be merged together.
115	*	266	*
116	* 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
117	* replaces - this is mostly for clarity - a decent compiler should hopefully	268	* replaces - this is mostly for clarity - a decent compiler should hopefully
118	* reduce this to the same efficiency.	269	* reduce this to the same efficiency.
119	*	270	*
120	* Check nrof variable *before* calling CAN_MERGE()	271	* Check nrof variable *before* calling can_merge()
121	*	272	*
122	* Improvements made with merge: Better checking on potion, and also	273	* Improvements made with merge: Better checking on potion, and also
123	* check weight	274	* check weight
124	*/	275	*/
125		276	bool object::can_merge_slow (object *ob1, object *ob2)
126	int CAN_MERGE(object *ob1, object *ob2) {	277	{
127
128	/* A couple quicksanity checks */	278	/* A couple quick sanity checks */
129	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;
130		286
131	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
132	/* 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
133	* 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
134	* check?	366	* check?
135	*/	367	*/
136	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))
137	return 0;	386	return 0;
		387	}
138		388
139	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	389	if (ob1->self || ob2->self)
140	* value could not be stored in a sint32 (which unfortunately sometimes is
141	* used to store nrof).
142	*/
143	if (ob1->nrof+ob2->nrof >= 1UL<<31)
144	return 0;
145
146	/* This is really a spellbook check - really, we should
147	* check all objects in the inventory.
148	*/
149	if (ob1->inv || ob2->inv) {
150	/* if one object has inventory but the other doesn't, not equiv */
151	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
152
153	/* Now check to see if the two inventory objects could merge */
154	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
155
156	/* inventory ok - still need to check rest of this object to see
157	* if it is valid.
158	*/
159	}	390	{
		391	ob1->optimise ();
		392	ob2->optimise ();
160		393
161	/* If the objects have been identified, set the BEEN_APPLIED flag.	394	if (ob1->self || ob2->self)
162	* This is to the comparison of the flags below will be OK. We
163	* just can't ignore the been applied or identified flags, as they
164	* are not equal - just if it has been identified, the been_applied
165	* flags lose any meaning.
166	*/
167	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
168	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
169
170	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
171	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
172
173
174	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
175	* being locked in inventory should prevent merging.
176	* 0x4 in flags3 is CLIENT_SENT
177	*/
178	if ((ob1->arch != ob2->arch) ||
179	(ob1->flags[0] != ob2->flags[0]) ||
180	(ob1->flags[1] != ob2->flags[1]) ||
181	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
182	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
183	(ob1->name != ob2->name) ||
184	(ob1->title != ob2->title) ||
185	(ob1->msg != ob2->msg) ||
186	(ob1->weight != ob2->weight) ||
187	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
188	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
189	(ob1->attacktype != ob2->attacktype) ||
190	(ob1->magic != ob2->magic) ||
191	(ob1->slaying != ob2->slaying) ||
192	(ob1->skill != ob2->skill) ||
193	(ob1->value != ob2->value) ||
194	(ob1->animation_id != ob2->animation_id) ||
195	(ob1->client_type != ob2->client_type) ||
196	(ob1->materialname != ob2->materialname) ||
197	(ob1->lore != ob2->lore) ||
198	(ob1->subtype != ob2->subtype) ||
199	(ob1->move_type != ob2->move_type) ||
200	(ob1->move_block != ob2->move_block) ||
201	(ob1->move_allow != ob2->move_allow) ||
202	(ob1->move_on != ob2->move_on) ||
203	(ob1->move_off != ob2->move_off) ||
204	(ob1->move_slow != ob2->move_slow) ||
205	(ob1->move_slow_penalty != ob2->move_slow_penalty)
206	)	395	{
		396	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		397	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		398
		399	if (k1 != k2)
207	return 0;	400	return 0;
208		401
209	/* Don't merge objects that are applied. With the new 'body' code,	402	if (k1 == 0)
210	* it is possible for most any character to have more than one of
211	* some items equipped, and we don't want those to merge.
212	*/
213	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))
214	return 0;
215
216	switch (ob1->type) {
217	case SCROLL:
218	if (ob1->level != ob2->level) return 0;
219	break;
220
221	}
222	if (ob1->key_values != NULL || ob2->key_values != NULL) {
223	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {
225	/* One has fields, but the other one doesn't. */
226	return 0;	403	return 1;
227	} else if (!compare_ob_value_lists(ob1, ob2)) {	404
		405	if (!cfperl_can_merge (ob1, ob2))
228	return 0;	406	return 0;
229	}	407	}
230	}	408	}
231		409
232	/* Everything passes, must be OK. */	410	/* Everything passes, must be OK. */
233	return 1;	411	return 1;
234	}	412	}
235		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
236	/*	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	/*
237	* sum_weight() is a recursive function which calculates the weight	487	* this is a recursive function which calculates the weight
238	* 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
239	* containers are carrying, and sums it up.	489	* containers are carrying, and sums it up.
240	*/	490	*/
241	signed long sum_weight(object *op) {	491	void
242	signed long sum;	492	object::update_weight ()
243	object *inv;	493	{
244	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	494	weight_t sum = 0;
245	if (inv->inv)	495
246	sum_weight(inv);	496	for (object *op = inv; op; op = op->below)
247	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 ());
248	}	501	}
249	if (op->type == CONTAINER && op->stats.Str)	502
250	sum = (sum * (100 - op->stats.Str))/100;	503	if (sum != carrying)
251	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
252	op->carrying = sum;	509	carrying = sum;
253	return sum;
254	}
255		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
256	/**	517	/*
257	* Return the outermost environment object for a given object.	518	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
258	*/	519	*/
259		520	char *
260	object *object_get_env_recursive (object *op) {
261	while (op->env != NULL)
262	op = op->env;
263	return op;
264	}
265
266	/*
267	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
268	* a better check. We basically keeping traversing up until we can't
269	* or find a player.
270	*/
271
272	object *is_player_inv (object *op) {
273	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
274	if (op->env==op)
275	op->env = NULL;
276	return op;
277	}
278
279	/*
280	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
281	* Some error messages.
282	* The result of the dump is stored in the static global errmsg array.
283	*/
284
285	void dump_object2(object *op) {
286	errmsg[0] = 0;
287	return;
288	//TODO//D#d#
289	#if 0
290	char *cp;
291	/* object *tmp;*/
292
293	if(op->arch!=NULL) {
294	strcat(errmsg,"arch ");
295	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
296	strcat(errmsg,"\n");
297	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
298	strcat(errmsg,cp);
299	#if 0
300	/* Don't dump player diffs - they are too long, mostly meaningless, and
301	* will overflow the buffer.
302	* Changed so that we don't dump inventory either. This may
303	* also overflow the buffer.
304	*/
305	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	for (tmp=op->inv; tmp; tmp=tmp->below)
308	dump_object2(tmp);
309	#endif
310	strcat(errmsg,"end\n");
311	} else {
312	strcat(errmsg,"Object ");
313	if (op->name==NULL) strcat(errmsg, "(null)");
314	else strcat(errmsg,op->name);
315	strcat(errmsg,"\n");
316	#if 0
317	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
318	strcat(errmsg,cp);
319	for (tmp=op->inv; tmp; tmp=tmp->below)
320	dump_object2(tmp);
321	#endif
322	strcat(errmsg,"end\n");
323	}
324	#endif
325	}
326
327	/*
328	* Dumps an object. Returns output in the static global errmsg array.
329	*/
330
331	void dump_object(object *op) {	521	dump_object (object *op)
332	if(op==NULL) {	522	{
333	strcpy(errmsg,"[NULL pointer]");	523	if (!op)
334	return;	524	return strdup ("[NULLOBJ]");
335	}
336	errmsg[0]='\0';
337	dump_object2(op);
338	}
339		525
340	void dump_all_objects(void) {	526	object_freezer freezer;
341	object *op;	527	op->write (freezer);
342	for(op=objects;op!=NULL;op=op->next) {	528	return freezer.as_string ();
343	dump_object(op);
344	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
345	}
346	}	529	}
347		530
348	/*	531	char *
349	* get_nearest_part(multi-object, object 2) returns the part of the	532	object::as_string ()
350	* multi-object 1 which is closest to the second object.	533	{
351	* If it's not a multi-object, it is returned.	534	return dump_object (this);
352	*/
353
354	object *get_nearest_part(object *op, const object *pl) {
355	object *tmp,*closest;
356	int last_dist,i;
357	if(op->more==NULL)
358	return op;
359	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
360	if((i=distance(tmp,pl))<last_dist)
361	closest=tmp,last_dist=i;
362	return closest;
363	}	535	}
364		536
365	/*	537	/*
366	* 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.
367	*/	540	*/
368		541	object *
369	object *find_object(tag_t i) {	542	find_object (tag_t i)
370	object *op;	543	{
371	for(op=objects;op!=NULL;op=op->next)	544	for_all_objects (op)
372	if(op->count==i)	545	if (op->count == i)
373	break;
374	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;
375	}	564	}
376		565
377	/*	566	/*
378	* 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.
379	* Used only by the patch command, but not all that useful.	568	* Used only by the patch command, but not all that useful.
380	* Enables features like "patch <name-of-other-player> food 999"	569	* Enables features like "patch <name-of-other-player> food 999"
381	*/	570	*/
382		571	object *
383	object *find_object_name(const char *str) {	572	find_object_name (const char *str)
384	const char *name = shstr::find (str);	573	{
385	object *op;	574	shstr_cmp str_ (str);
386	for(op=objects;op!=NULL;op=op->next)	575
		576	if (str_)
		577	for_all_objects (op)
387	if(&op->name == name)	578	if (op->name == str_)
388	break;	579	return op;
389		580
390	return op;	581	return 0;
391	}	582	}
392
393	void free_all_object_data(void) {
394	#ifdef MEMORY_DEBUG
395	object *op, *next;
396
397	for (op=free_objects; op!=NULL; ) {
398	next=op->next;
399	free(op);
400	nrofallocobjects--;
401	nroffreeobjects--;
402	op=next;
403	}
404	#endif
405	LOG(llevDebug,"%d allocated objects, %d free objects, STARMAX=%d\n",
406	nrofallocobjects, nroffreeobjects,STARTMAX);
407	}
408
409	/*
410	* Returns the object which this object marks as being the owner.
411	* A id-scheme is used to avoid pointing to objects which have been
412	* freed and are now reused. If this is detected, the owner is
413	* set to NULL, and NULL is returned.
414	* Changed 2004-02-12 - if the player is setting at the play again
415	* prompt, he is removed, and we don't want to treat him as an owner of
416	* anything, so check removed flag. I don't expect that this should break
417	* anything - once an object is removed, it is basically dead anyways.
418	*/
419
420	object *get_owner(object *op) {
421	if(op->owner==NULL)
422	return NULL;
423
424	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
425	op->owner->count==op->ownercount)
426	return op->owner;
427
428	op->owner=NULL;
429	op->ownercount=0;
430	return NULL;
431	}
432
433	void clear_owner(object *op)
434	{
435	if (!op) return;
436
437	if (op->owner && op->ownercount == op->owner->count)
438	op->owner->refcount--;
439
440	op->owner = NULL;
441	op->ownercount = 0;
442	}
443
444
445		583
446	/*	584	/*
447	* 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
448	* skill and experience objects.	586	* skill and experience objects.
		587	* ACTUALLY NO! investigate! TODO
449	*/	588	*/
450	void set_owner (object *op, object *owner)	589	void
		590	object::set_owner (object *owner)
451	{	591	{
452	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 ());
453	return;	600	return;
454
455	/* next line added to allow objects which own objects */
456	/* Add a check for ownercounts in here, as I got into an endless loop
457	* with the fireball owning a poison cloud which then owned the
458	* fireball. I believe that was caused by one of the objects getting
459	* freed and then another object replacing it. Since the ownercounts
460	* didn't match, this check is valid and I believe that cause is valid.
461	*/
462	while (owner->owner && owner!=owner->owner &&
463	owner->ownercount==owner->owner->count) owner=owner->owner;
464
465	/* IF the owner still has an owner, we did not resolve to a final owner.
466	* so lets not add to that.
467	*/
468	if (owner->owner) return;
469
470	op->owner=owner;
471
472	op->ownercount=owner->count;
473	owner->refcount++;
474
475	}
476
477	/* Set the owner to clone's current owner and set the skill and experience
478	* objects to clone's objects (typically those objects that where the owner's
479	* current skill and experience objects at the time when clone's owner was
480	* set - not the owner's current skill and experience objects).
481	*
482	* Use this function if player created an object (e.g. fire bullet, swarm
483	* spell), and this object creates further objects whose kills should be
484	* accounted for the player's original skill, even if player has changed
485	* skills meanwhile.
486	*/
487	void copy_owner (object *op, object *clone)
488	{
489	object *owner = get_owner (clone);
490	if (owner == NULL) {
491	/* players don't have owners - they own themselves. Update
492	* as appropriate.
493	*/
494	if (clone->type == PLAYER) owner=clone;
495	else return;
496	}
497	set_owner(op, owner);
498
499	}
500
501	/*
502	* Resets vital variables in an object
503	*/
504
505	void reset_object(object *op) {
506
507	op->name = NULL;
508	op->name_pl = NULL;
509	op->title = NULL;
510	op->race = NULL;
511	op->slaying = NULL;
512	op->skill = NULL;
513	op->msg = NULL;
514	op->materialname = NULL;
515	op->lore = NULL;
516	clear_object(op);
517	}
518
519	/* Zero the key_values on op, decrementing the shared-string
520	* refcounts and freeing the links.
521	*/
522	static void free_key_values(object * op)
523	{
524	for (key_value *i = op->key_values; i != 0; )
525	{	601	}
526	key_value *next = i->next;
527	delete i;
528	i = next;
529	}
530
531	op->key_values = 0;
532	}
533		602
534	/*	603	this->owner = owner;
535	* clear_object() frees everything allocated by an object, and also
536	* clears all variables and flags to default settings.
537	*/
538
539	void clear_object(object *op)
540	{
541	op->clear ();
542
543	free_key_values (op);
544
545	/* the memset will clear all these values for us, but we need
546	* to reduce the refcount on them.
547	*/
548	op->name = 0;
549	op->name_pl = 0;
550	op->title = 0;
551	op->race = 0;
552	op->slaying = 0;
553	op->skill = 0;
554	op->msg = 0;
555	op->lore = 0;
556	op->materialname = 0;
557
558	memset((void*)op, 0, sizeof (object_special));
559	/* Below here, we clear things that are not done by the memset,
560	* or set default values that are not zero.
561	*/
562	/* This is more or less true */
563	SET_FLAG (op, FLAG_REMOVED);
564
565	op->contr = NULL;
566	op->below = NULL;
567	op->above = NULL;
568	op->inv = NULL;
569	op->container=NULL;
570	op->env=NULL;
571	op->more=NULL;
572	op->head=NULL;
573	op->map=NULL;
574	op->refcount=0;
575	op->active_next = NULL;
576	op->active_prev = NULL;
577	/* What is not cleared is next, prev, and count */
578
579	op->expmul=1.0;
580	op->face = blank_face;
581	op->attacked_by_count = (tag_t) -1;
582
583	if (settings.casting_time)
584	op->casting_time = -1;
585	}	604	}
586		605
587	/*	606	/*
588	* copy object first frees everything allocated by the second object,	607	* copy_to first frees everything allocated by the dst object,
589	* and then copies the contends of the first object into the second	608	* and then copies the contents of itself into the second
590	* object, allocating what needs to be allocated. Basically, any	609	* object, allocating what needs to be allocated. Basically, any
591	* 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,
592	* 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
593	* will point at garbage.	612	* will point at garbage.
594	*/	613	*/
595		614	void
596	void copy_object(object *op2, object *op)	615	object::copy_to (object *dst)
597	{	616	{
598	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);	617	dst->remove ();
		618	*(object_copy *)dst = *this;
599		619
600	op->clear ();	620	// maybe move to object_copy?
		621	dst->kv = kv;
601		622
602	free_key_values (op);	623	dst->flag [FLAG_REMOVED] = true;
603		624	dst->activate ();
604	*(object_special *)op = *(object_special *)op2;
605	op2->clone (op);
606
607	if (is_freed) SET_FLAG(op,FLAG_FREED);
608	if (is_removed) SET_FLAG(op,FLAG_REMOVED);
609
610	if (op2->speed < 0)
611	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
612
613	/* Copy over key_values, if any. */
614	if (op2->key_values != NULL) {
615	key_value *tail = NULL;
616	key_value *i;
617
618	op->key_values = NULL;
619
620	for (i = op2->key_values; i != NULL; i = i->next)
621	{
622	key_value *new_link = new key_value;
623
624	new_link->next = NULL;
625	new_link->key = i->key;
626	new_link->value = i->value;
627
628	/* Try and be clever here, too. */
629	if (op->key_values == NULL)
630	{
631	op->key_values = new_link;
632	tail = new_link;
633	}
634	else
635	{
636	tail->next = new_link;
637	tail = new_link;
638	}
639	}
640	}
641
642	update_ob_speed (op);
643	}	625	}
644		626
645	/*	627	void
646	* expand_objects() allocates more objects for the list of unused objects.	628	object::instantiate ()
647	* It is called from get_object() if the unused list is empty.	629	{
		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.
648	*/	644	*/
		645	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		646	slot[i].used = slot[i].info;
649		647
650	void expand_objects(void) {	648	attachable::instantiate ();
651	int i;
652	object *obj;
653	obj = new object [OBJ_EXPAND];
654
655	free_objects=obj;
656	obj[0].prev=NULL;
657	obj[0].next= &obj[1],
658	SET_FLAG(&(obj[0]), FLAG_REMOVED);
659	SET_FLAG(&(obj[0]), FLAG_FREED);
660
661	for(i=1;i<OBJ_EXPAND-1;i++) {
662	obj[i].next= &obj[i+1],
663	obj[i].prev= &obj[i-1],
664	SET_FLAG(&(obj[i]), FLAG_REMOVED);
665	SET_FLAG(&(obj[i]), FLAG_FREED);
666	}
667	obj[OBJ_EXPAND-1].prev= &obj[OBJ_EXPAND-2],
668	obj[OBJ_EXPAND-1].next=NULL,
669	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_REMOVED);
670	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_FREED);
671
672	nrofallocobjects += OBJ_EXPAND;
673	nroffreeobjects += OBJ_EXPAND;
674	}	649	}
675		650
676	/*
677	* get_object() grabs an object from the list of unused objects, makes
678	* sure it is initialised, and returns it.
679	* If there are no free objects, expand_objects() is called to get more.
680	*/
681
682	object *get_object(void)
683	{
684	object *op;	651	object *
		652	object::clone ()
		653	{
		654	object *neu = create ();
		655	copy_to (neu);
685		656
686	if(free_objects==NULL)	657	// TODO: unclean state changes, should not be done in clone AND instantiate
687	expand_objects();	658	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
		659	neu->speed_left = - neu->speed - rndm (); // TODO animation
688		660
689	op = free_objects;	661	neu->map = map; // not copied by copy_to
690
691	if (!QUERY_FLAG (op, FLAG_FREED))
692	LOG(llevError,"Fatal: Getting busy object.\n");
693
694	free_objects = op->next;
695
696	if (free_objects != NULL)
697	free_objects->prev = NULL;
698
699	op->count= ++ob_count;
700	op->name=NULL;
701	op->name_pl=NULL;
702	op->title=NULL;
703	op->race=NULL;
704	op->slaying=NULL;
705	op->skill = NULL;
706	op->lore=NULL;
707	op->msg=NULL;
708	op->materialname=NULL;
709	op->next=objects;
710	op->prev=NULL;
711	op->active_next = NULL;
712	op->active_prev = NULL;
713	if(objects!=NULL)
714	objects->prev=op;
715	objects=op;
716	clear_object(op);
717	SET_FLAG(op,FLAG_REMOVED);
718	nroffreeobjects--;
719	return op;	662	return neu;
720	}	663	}
721		664
722	/*	665	/*
723	* If an object with the IS_TURNABLE() flag needs to be turned due	666	* If an object with the IS_TURNABLE() flag needs to be turned due
724	* to the closest player being on the other side, this function can	667	* to the closest player being on the other side, this function can
725	* be called to update the face variable, _and_ how it looks on the map.	668	* be called to update the face variable, _and_ how it looks on the map.
726	*/	669	*/
727		670	void
728	void update_turn_face(object *op) {	671	update_turn_face (object *op)
729	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	672	{
		673	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
730	return;	674	return;
		675
731	SET_ANIMATION(op, op->direction);	676	SET_ANIMATION (op, op->direction);
732	update_object(op,UP_OBJ_FACE);	677	update_object (op, UP_OBJ_FACE);
733	}	678	}
734		679
735	/*	680	/*
736	* Updates the speed of an object. If the speed changes from 0 to another	681	* Updates the speed of an object. If the speed changes from 0 to another
737	* value, or vice versa, then add/remove the object from the active list.	682	* value, or vice versa, then add/remove the object from the active list.
738	* This function needs to be called whenever the speed of an object changes.	683	* This function needs to be called whenever the speed of an object changes.
739	*/	684	*/
		685	void
		686	object::set_speed (float speed)
		687	{
		688	this->speed = speed;
740		689
741	void update_ob_speed(object *op) {	690	if (has_active_speed ())
742	extern int arch_init;	691	activate ();
743
744	/* No reason putting the archetypes objects on the speed list,
745	* since they never really need to be updated.
746	*/
747
748	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
749	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);
750	#ifdef MANY_CORES
751	abort();
752	#else
753	op->speed = 0;
754	#endif
755	}
756	if (arch_init) {
757	return;
758	}
759	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
760	/* If already on active list, don't do anything */
761	if (op->active_next || op->active_prev || op==active_objects)
762	return;
763
764	/* process_events() expects us to insert the object at the beginning
765	* of the list. */
766	op->active_next = active_objects;
767	if (op->active_next!=NULL)
768	op->active_next->active_prev = op;
769	active_objects = op;
770	}
771	else {	692	else
772	/* If not on the active list, nothing needs to be done */	693	deactivate ();
773	if (!op->active_next && !op->active_prev && op!=active_objects)
774	return;
775
776	if (op->active_prev==NULL) {
777	active_objects = op->active_next;
778	if (op->active_next!=NULL)
779	op->active_next->active_prev = NULL;
780	}
781	else {
782	op->active_prev->active_next = op->active_next;
783	if (op->active_next)
784	op->active_next->active_prev = op->active_prev;
785	}
786	op->active_next = NULL;
787	op->active_prev = NULL;
788	}
789	}	694	}
790		695
791	/* This function removes object 'op' from the list of active
792	* objects.
793	* This should only be used for style maps or other such
794	* reference maps where you don't want an object that isn't
795	* in play chewing up cpu time getting processed.
796	* The reverse of this is to call update_ob_speed, which
797	* will do the right thing based on the speed of the object.
798	*/
799	void remove_from_active_list(object *op)
800	{
801	/* If not on the active list, nothing needs to be done */
802	if (!op->active_next && !op->active_prev && op!=active_objects)
803	return;
804
805	if (op->active_prev==NULL) {
806	active_objects = op->active_next;
807	if (op->active_next!=NULL)
808	op->active_next->active_prev = NULL;
809	}
810	else {
811	op->active_prev->active_next = op->active_next;
812	if (op->active_next)
813	op->active_next->active_prev = op->active_prev;
814	}
815	op->active_next = NULL;
816	op->active_prev = NULL;
817	}
818
819	/*	696	/*
820	* update_object() updates the array which represents the map.	697	* update_object() updates the the map.
821	* It takes into account invisible objects (and represent squares covered	698	* It takes into account invisible objects (and represent squares covered
822	* by invisible objects by whatever is below them (unless it's another	699	* by invisible objects by whatever is below them (unless it's another
823	* invisible object, etc...)	700	* invisible object, etc...)
824	* If the object being updated is beneath a player, the look-window	701	* If the object being updated is beneath a player, the look-window
825	* of that player is updated (this might be a suboptimal way of	702	* of that player is updated (this might be a suboptimal way of
826	* updating that window, though, since update_object() is called _often_)	703	* updating that window, though, since update_object() is called _often_)
827	*	704	*
828	* action is a hint of what the caller believes need to be done.	705	* action is a hint of what the caller believes need to be done.
829	* For example, if the only thing that has changed is the face (due to
830	* an animation), we don't need to call update_position until that actually
831	* comes into view of a player. OTOH, many other things, like addition/removal
832	* of walls or living creatures may need us to update the flags now.
833	* current action are:	706	* current action are:
834	* UP_OBJ_INSERT: op was inserted	707	* UP_OBJ_INSERT: op was inserted
835	* UP_OBJ_REMOVE: op was removed	708	* UP_OBJ_REMOVE: op was removed
836	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	709	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
837	* as that is easier than trying to look at what may have changed.	710	* as that is easier than trying to look at what may have changed.
838	* UP_OBJ_FACE: only the objects face has changed.	711	* UP_OBJ_FACE: only the objects face has changed.
839	*/	712	*/
840		713	void
841	void update_object(object *op, int action) {	714	update_object (object *op, int action)
842	int update_now=0, flags;	715	{
843	MoveType move_on, move_off, move_block, move_slow;	716	if (!op)
844		717	{
845	if (op == NULL) {
846	/* this should never happen */	718	/* this should never happen */
847	LOG(llevDebug,"update_object() called for NULL object.\n");	719	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
848	return;	720	return;
849	}
850		721	}
851	if(op->env!=NULL) {	722
		723	if (!op->is_on_map ())
		724	{
852	/* Animation is currently handled by client, so nothing	725	/* Animation is currently handled by client, so nothing
853	* to do in this case.	726	* to do in this case.
854	*/	727	*/
855	return;	728	return;
856	}
857
858	/* If the map is saving, don't do anything as everything is
859	* going to get freed anyways.
860	*/
861	if (!op->map || op->map->in_memory == MAP_SAVING) return;
862		729	}
		730
863	/* make sure the object is within map boundaries */	731	/* make sure the object is within map boundaries */
864	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	732	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
865	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	733	{
866	LOG(llevError,"update_object() called for object out of map!\n");	734	LOG (llevError, "update_object() called for object out of map!\n");
867	#ifdef MANY_CORES	735	#ifdef MANY_CORES
868	abort();	736	abort ();
869	#endif	737	#endif
870	return;	738	return;
871	}
872		739	}
873	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
874	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
875	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
876	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
877	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
878	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
879		740
		741	mapspace &m = op->ms ();
		742
		743	if (!(m.flags_ & P_UPTODATE))
		744	m.update_up (); // nothing to do except copy up
880	if (action == UP_OBJ_INSERT) {	745	else if (action == UP_OBJ_INSERT)
		746	{
		747	#if 0
		748	// this is likely overkill, TODO: revisit (schmorp)
881	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	749	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
882	update_now=1;	750	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
883		751	|| (op->is_player () && !(m.flags_ & P_PLAYER))
884	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	752	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
885	update_now=1;	753	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
886		754	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
887	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	755	|| (m.move_on | op->move_on ) != m.move_on
888	update_now=1;
889
890	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
891	update_now=1;
892
893	if ((move_on | op->move_on) != move_on) update_now=1;
894	if ((move_off | op->move_off) != move_off) update_now=1;	756	|| (m.move_off | op->move_off ) != m.move_off
		757	|| (m.move_slow | op->move_slow) != m.move_slow
895	/* This isn't perfect, but I don't expect a lot of objects to	758	/* This isn't perfect, but I don't expect a lot of objects to
896	* to have move_allow right now.	759	* have move_allow right now.
897	*/	760	*/
898	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	761	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
899	update_now=1;	762	m.invalidate ();
900	if ((move_slow | op->move_slow) != move_slow) update_now=1;	763	#else
		764	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		765	m.invalidate ();
		766	#endif
901	}	767	}
902	/* if the object is being removed, we can't make intelligent	768	/* if the object is being removed, we can't make intelligent
903	* decisions, because remove_ob can't really pass the object	769	* decisions, because remove_ob can't really pass the object
904	* that is being removed.	770	* that is being removed.
905	*/	771	*/
906	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	772	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
907	update_now=1;	773	m.invalidate ();
908	} else if (action == UP_OBJ_FACE) {	774	else if (action == UP_OBJ_FACE)
909	/* Nothing to do for that case */	775	m.update_up (); // nothing to do for that case, except copy up
910	}
911	else {	776	else
912	LOG(llevError,"update_object called with invalid action: %d\n", action);	777	LOG (llevError, "update_object called with invalid action: %d\n", action);
913	}
914		778
915	if (update_now) {
916	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
917	update_position(op->map, op->x, op->y);
918	}
919
920	if(op->more!=NULL)	779	if (op->more)
921	update_object(op->more, action);	780	update_object (op->more, action);
922	}	781	}
923		782
		783	object::object ()
		784	{
		785	this->set_flag (FLAG_REMOVED);
924		786
925	/*	787	//expmul = 1.0; declared const for the time being
926	* free_object() frees everything allocated by an object, removes	788	face = blank_face;
927	* it from the list of used objects, and puts it on the list of	789	material = MATERIAL_NULL;
928	* free objects. The IS_FREED() flag is set in the object.
929	* The object must have been removed by remove_ob() first for
930	* this function to succeed.
931	*
932	* If free_inventory is set, free inventory as well. Else drop items in
933	* inventory to the ground.
934	*/
935
936	void free_object(object *ob) {
937	free_object2(ob, 0);
938	}	790	}
939	void free_object2(object *ob, int free_inventory) {
940	object *tmp,*op;
941		791
942	ob->clear ();	792	object::~object ()
		793	{
		794	unlink ();
943		795
944	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	796	kv.clear ();
945	LOG(llevDebug,"Free object called with non removed object\n");	797	}
946	dump_object(ob);	798
947	#ifdef MANY_CORES	799	void object::link ()
948	abort();	800	{
949	#endif	801	assert (!index);//D
950	}	802	uuid = UUID::gen ();
951	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	803
952	LOG(llevMonster,"Warning: tried to free friendly object.\n");	804	refcnt_inc ();
953	remove_friendly_object(ob);	805	objects.insert (this);
954	}	806
955	if(QUERY_FLAG(ob,FLAG_FREED)) {	807	++create_count;
956	dump_object(ob);	808
957	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	809	}
		810
		811	void object::unlink ()
		812	{
		813	if (!index)
958	return;	814	return;
		815
		816	++destroy_count;
		817
		818	objects.erase (this);
		819	refcnt_dec ();
		820	}
		821
		822	void
		823	object::activate ()
		824	{
		825	/* If already on active list, don't do anything */
		826	if (active)
		827	return;
		828
		829	if (has_active_speed ())
959	}	830	{
960	if(ob->more!=NULL) {	831	if (flag [FLAG_FREED])
961	free_object2(ob->more, free_inventory);	832	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
962	ob->more=NULL;	833
		834	actives.insert (this);
		835	}
		836	}
		837
		838	void
		839	object::activate_recursive ()
		840	{
		841	activate ();
		842
		843	for (object *op = inv; op; op = op->below)
		844	op->activate_recursive ();
		845	}
		846
		847	/* This function removes object 'op' from the list of active
		848	* objects.
		849	* This should only be used for style maps or other such
		850	* reference maps where you don't want an object that isn't
		851	* in play chewing up cpu time getting processed.
		852	* The reverse of this is to call update_ob_speed, which
		853	* will do the right thing based on the speed of the object.
		854	*/
		855	void
		856	object::deactivate ()
		857	{
		858	/* If not on the active list, nothing needs to be done */
		859	if (!active)
		860	return;
		861
		862	actives.erase (this);
		863	}
		864
		865	void
		866	object::deactivate_recursive ()
		867	{
		868	for (object *op = inv; op; op = op->below)
		869	op->deactivate_recursive ();
		870
		871	deactivate ();
		872	}
		873
		874	void
		875	object::set_flag_inv (int flag, int value)
		876	{
		877	for (object *op = inv; op; op = op->below)
963	}	878	{
964	if (ob->inv) {	879	op->flag [flag] = value;
		880	op->set_flag_inv (flag, value);
		881	}
		882	}
		883
		884	/*
		885	* Remove and free all objects in the inventory of the given object.
		886	* object.c ?
		887	*/
		888	void
		889	object::destroy_inv (bool drop_to_ground)
		890	{
		891	// need to check first, because the checks below might segfault
		892	// as we might be on an invalid mapspace and crossfire code
		893	// is too buggy to ensure that the inventory is empty.
		894	// corollary: if you create arrows etc. with stuff in its inventory,
		895	// cf will crash below with off-map x and y
		896	if (!inv)
		897	return;
		898
965	/* Only if the space blocks everything do we not process -	899	/* Only if the space blocks everything do we not process -
966	* if some form of movemnt is allowed, let objects	900	* if some form of movement is allowed, let objects
967	* drop on that space.	901	* drop on that space.
968	*/	902	*/
969	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	903	if (!drop_to_ground
970	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	904	|| !map
		905	|| !map->linkable ()
		906	|| map->no_drop
		907	|| ms ().move_block == MOVE_ALL)
		908	{
		909	while (inv)
		910	inv->destroy ();
		911	}
		912	else
		913	{ /* Put objects in inventory onto this space */
		914	while (inv)
971	{	915	{
972	op=ob->inv;	916	object *op = inv;
973	while(op!=NULL) {	917
974	tmp=op->below;	918	if (op->flag [FLAG_STARTEQUIP]
975	remove_ob(op);	919	|| op->flag [FLAG_NO_DROP]
976	free_object2(op, free_inventory);	920	|| op->type == RUNE
977	op=tmp;	921	|| op->type == TRAP
978	}	922	|| op->flag [FLAG_IS_A_TEMPLATE]
		923	|| op->flag [FLAG_DESTROY_ON_DEATH])
		924	op->destroy ();
		925	else
		926	map->insert (op, x, y);
979	}	927	}
980	else { /* Put objects in inventory onto this space */	928	}
981	op=ob->inv;	929	}
982	while(op!=NULL) {	930
983	tmp=op->below;	931	/*
984	remove_ob(op);	932	* Remove and free all objects in the inventory of the given object.
985	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||	933	* Unlike destroy_inv, this assumes the *this is destroyed as well
986	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))	934	* well, so we can (and have to!) take shortcuts.
987	free_object(op);	935	*/
988	else {	936	void
989	op->x=ob->x;	937	object::destroy_inv_fast ()
990	op->y=ob->y;	938	{
991	insert_ob_in_map(op,ob->map,NULL,0); /* Insert in same map as the envir */	939	while (object *op = inv)
992	}
993	op=tmp;
994	}
995	}
996	}	940	{
997	/* Remove object from the active list */	941	// remove from object the fast way
998	ob->speed = 0;	942	op->flag [FLAG_REMOVED] = true;
999	update_ob_speed(ob);	943	op->env = 0;
		944	if ((inv = inv->below))
		945	inv->above = 0;
1000		946
1001	SET_FLAG(ob, FLAG_FREED);	947	// then destroy
1002	ob->count = 0;	948	op->destroy ();
		949	}
		950	}
1003		951
1004	/* Remove this object from the list of used objects */	952	void
1005	if(ob->prev==NULL) {	953	object::freelist_free (int count)
1006	objects=ob->next;	954	{
1007	if(objects!=NULL)	955	while (count-- && freelist)
1008	objects->prev=NULL;
1009	}	956	{
1010	else {	957	freelist_item *next = freelist->next;
1011	ob->prev->next=ob->next;	958	// count is being "destroyed"
1012	if(ob->next!=NULL)	959
1013	ob->next->prev=ob->prev;	960	sfree ((char *)freelist, sizeof (object));
		961
		962	freelist = next;
		963	--free_count;
		964	}
		965	}
		966
		967	object *
		968	object::create ()
		969	{
		970	object *op;
		971
		972	if (freelist)
1014	}	973	{
1015		974	freelist_item li = *freelist;
1016	ob->name = 0;	975	memset (freelist, 0, sizeof (object));
1017	ob->name_pl = 0;
1018	ob->title = 0;
1019	ob->race = 0;
1020	ob->slaying = 0;
1021	ob->skill = 0;
1022	ob->lore = 0;
1023	ob->msg = 0;
1024	ob->materialname = 0;
1025		976
1026	free_key_values (ob);	977	op = new (freelist) object;
		978	op->count = li.count;
1027		979
1028	/* Now link it with the free_objects list: */	980	freelist = li.next;
1029	ob->prev=NULL;	981	--free_count;
1030	ob->next=free_objects;	982	}
		983	else
		984	{
		985	void *ni = salloc0<char> (sizeof (object));
1031		986
1032	if(free_objects!=NULL)	987	op = new(ni) object;
1033	free_objects->prev=ob;
1034		988
1035	free_objects=ob;	989	op->count = ++object_count;
1036	nroffreeobjects++;	990	}
1037	}
1038		991
1039	/*	992	op->link ();
1040	* count_free() returns the number of objects on the list of free objects.
1041	*/
1042		993
1043	int count_free ()
1044	{
1045	int i=0;
1046	object *tmp=free_objects;
1047	while(tmp!=NULL)
1048	tmp=tmp->next, i++;
1049	return i;	994	return op;
1050	}	995	}
1051		996
1052	/*	997	void
1053	* count_used() returns the number of objects on the list of used objects.	998	object::do_delete ()
1054	*/
1055
1056	int count_used()
1057	{	999	{
1058	int i=0;	1000	uint32_t count = this->count;
1059	object *tmp=objects;	1001
1060	while(tmp!=NULL)	1002	this->~object ();
1061	tmp=tmp->next, i++;	1003
		1004	freelist_item *li = (freelist_item *)this;
		1005	li->next = freelist;
		1006	li->count = count;
		1007
		1008	freelist = li;
		1009	++free_count;
		1010	}
		1011
		1012	void
		1013	object::do_destroy ()
		1014	{
		1015	if (flag [FLAG_IS_LINKED])
		1016	remove_link ();
		1017
		1018	if (flag [FLAG_FRIENDLY])
		1019	remove_friendly_object (this);
		1020
		1021	remove ();
		1022
		1023	attachable::do_destroy ();
		1024
		1025	deactivate ();
		1026	unlink ();
		1027
		1028	flag [FLAG_FREED] = 1;
		1029
		1030	// hack to ensure that freed objects still have a valid map
		1031	map = &freed_map;
		1032	x = 1;
		1033	y = 1;
		1034
		1035	if (more)
		1036	{
		1037	more->destroy ();
		1038	more = 0;
		1039	}
		1040
		1041	head = 0;
		1042
		1043	// clear those pointers that likely might cause circular references
		1044	owner = 0;
		1045	enemy = 0;
		1046	attacked_by = 0;
		1047	current_weapon = 0;
		1048	}
		1049
		1050	void
		1051	object::destroy ()
		1052	{
		1053	if (destroyed ())
1062	return i;	1054	return;
1063	}
1064		1055
1065	/*	1056	if (!is_head () && !head->destroyed ())
1066	* count_active() returns the number of objects on the list of active objects.
1067	*/
1068
1069	int count_active()
1070	{
1071	int i=0;
1072	object *tmp=active_objects;
1073	while(tmp!=NULL)
1074	tmp=tmp->active_next, i++;
1075	return i;
1076	}
1077
1078	/*
1079	* sub_weight() recursively (outwards) subtracts a number from the
1080	* weight of an object (and what is carried by it's environment(s)).
1081	*/
1082
1083	void sub_weight (object *op, signed long weight) {
1084	while (op != NULL) {
1085	if (op->type == CONTAINER) {
1086	weight=(signed long)(weight*(100-op->stats.Str)/100);
1087	}	1057	{
1088	op->carrying-=weight;	1058	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
1089	op = op->env;	1059	head->destroy ();
		1060	return;
1090	}	1061	}
1091	}
1092		1062
1093	/* remove_ob(op):	1063	destroy_inv_fast ();
		1064
		1065	if (is_head ())
		1066	if (sound_destroy)
		1067	play_sound (sound_destroy);
		1068	else if (flag [FLAG_MONSTER])
		1069	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1070
		1071	attachable::destroy ();
		1072	}
		1073
		1074	/* op->remove ():
1094	* This function removes the object op from the linked list of objects	1075	* This function removes the object op from the linked list of objects
1095	* which it is currently tied to. When this function is done, the	1076	* which it is currently tied to. When this function is done, the
1096	* object will have no environment. If the object previously had an	1077	* object will have no environment. If the object previously had an
1097	* environment, the x and y coordinates will be updated to	1078	* environment, the x and y coordinates will be updated to
1098	* the previous environment.	1079	* the previous environment.
1099	* Beware: This function is called from the editor as well!
1100	*/	1080	*/
		1081	void
		1082	object::do_remove ()
		1083	{
		1084	if (flag [FLAG_REMOVED])
		1085	return;
1101		1086
1102	void remove_ob(object *op) {	1087	INVOKE_OBJECT (REMOVE, this);
1103	object *tmp,*last=NULL;
1104	object *otmp;
1105	tag_t tag;
1106	int check_walk_off;
1107	mapstruct *m;
1108	sint16 x,y;
1109
1110		1088
1111	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1089	flag [FLAG_REMOVED] = true;
1112	dump_object(op);
1113	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1114		1090
1115	/* Changed it to always dump core in this case. As has been learned	1091	if (more)
1116	* in the past, trying to recover from errors almost always	1092	more->remove ();
1117	* make things worse, and this is a real error here - something
1118	* that should not happen.
1119	* Yes, if this was a mission critical app, trying to do something
1120	* to recover may make sense, but that is because failure of the app
1121	* may have other disastrous problems. Cf runs out of a script
1122	* so is easily enough restarted without any real problems.
1123	* MSW 2001-07-01
1124	*/
1125	abort();
1126	}
1127	if(op->more!=NULL)
1128	remove_ob(op->more);
1129		1093
1130	SET_FLAG(op, FLAG_REMOVED);	1094	/*
1131
1132	/*
1133	* In this case, the object to be removed is in someones	1095	* In this case, the object to be removed is in someones
1134	* inventory.	1096	* inventory.
1135	*/	1097	*/
1136	if(op->env!=NULL) {	1098	if (env)
1137	if(op->nrof)	1099	{
1138	sub_weight(op->env, op->weight*op->nrof);	1100	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1139	else	1101	if (object *pl = visible_to ())
1140	sub_weight(op->env, op->weight+op->carrying);	1102	esrv_del_item (pl->contr, count);
		1103	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1141		1104
1142	/* NO_FIX_PLAYER is set when a great many changes are being	1105	adjust_weight (env, total_weight (), 0);
1143	* made to players inventory. If set, avoiding the call
1144	* to save cpu time.
1145	*/
1146	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&
1147	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1148	fix_player(otmp);
1149		1106
1150	if(op->above!=NULL)	1107	object *pl = in_player ();
1151	op->above->below=op->below;
1152	else
1153	op->env->inv=op->below;
1154		1108
1155	if(op->below!=NULL)
1156	op->below->above=op->above;
1157
1158	/* we set up values so that it could be inserted into	1109	/* we set up values so that it could be inserted into
1159	* the map, but we don't actually do that - it is up	1110	* the map, but we don't actually do that - it is up
1160	* to the caller to decide what we want to do.	1111	* to the caller to decide what we want to do.
1161	*/	1112	*/
1162	op->x=op->env->x,op->y=op->env->y;	1113	map = env->map;
1163	op->map=op->env->map;	1114	x = env->x;
1164	op->above=NULL,op->below=NULL;	1115	y = env->y;
1165	op->env=NULL;
1166	return;
1167	}
1168		1116
1169	/* If we get here, we are removing it from a map */	1117	// make sure cmov optimisation is applicable
1170	if (op->map == NULL) return;	1118	*(above ? &above->below : &env->inv) = below;
		1119	*(below ? &below->above : &above ) = above; // &above is just a dummy
1171		1120
1172	x = op->x;	1121	above = 0;
1173	y = op->y;	1122	below = 0;
1174	m = get_map_from_coord(op->map, &x, &y);	1123	env = 0;
1175		1124
1176	if (!m) {	1125	if (pl && pl->is_player ())
1177	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1178	op->map->path, op->x, op->y);
1179	/* in old days, we used to set x and y to 0 and continue.
1180	* it seems if we get into this case, something is probablye
1181	* screwed up and should be fixed.
1182	*/	1126	{
1183	abort();	1127	if (expect_false (pl->contr->combat_ob == this))
1184	}
1185	if (op->map != m) {
1186	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1187	op->map->path, m->path, op->x, op->y, x, y);
1188	}
1189
1190	/* Re did the following section of code - it looks like it had
1191	* lots of logic for things we no longer care about
1192	*/
1193
1194	/* link the object above us */
1195	if (op->above)
1196	op->above->below=op->below;
1197	else
1198	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1199
1200	/* Relink the object below us, if there is one */
1201	if(op->below) {
1202	op->below->above=op->above;
1203	} else {
1204	/* Nothing below, which means we need to relink map object for this space
1205	* use translated coordinates in case some oddness with map tiling is
1206	* evident
1207	*/	1128	{
1208	if(GET_MAP_OB(m,x,y)!=op) {	1129	pl->apply (pl->contr->combat_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
1209	dump_object(op);	1130	pl->contr->combat_ob = 0;
1210	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);	1131	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
1211	dump_object(GET_MAP_OB(m,x,y));	1132	}
1212	LOG(llevError,"%s\n",errmsg);	1133
		1134	if (expect_false (pl->contr->ranged_ob == this))
		1135	{
		1136	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1137	pl->contr->ranged_ob = 0;
		1138	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1139	}
		1140
		1141	pl->contr->queue_stats_update ();
		1142
		1143	if (expect_false (glow_radius) && pl->is_on_map ())
		1144	update_all_los (pl->map, pl->x, pl->y);
1213	}	1145	}
1214	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1146	}
		1147	else if (map)
1215	}	1148	{
1216	op->above=NULL;	1149	map->dirty = true;
1217	op->below=NULL;	1150	mapspace &ms = this->ms ();
1218		1151
1219	if (op->map->in_memory == MAP_SAVING)	1152	if (object *pl = ms.player ())
1220	return;
1221
1222	tag = op->count;
1223	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1224	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1225	/* No point updating the players look faces if he is the object
1226	* being removed.
1227	*/	1153	{
		1154	if (is_player ())
		1155	{
		1156	if (!flag [FLAG_WIZPASS])
		1157	ms.smell = ++mapspace::smellcount; // remember the smell of the player
1228		1158
1229	if(tmp->type==PLAYER && tmp!=op) {	1159	// leaving a spot always closes any open container on the ground
		1160	if (container && !container->env)
		1161	// this causes spurious floorbox updates, but it ensures
		1162	// that the CLOSE event is being sent.
		1163	close_container ();
		1164
		1165	--map->players;
		1166	map->touch ();
		1167	}
		1168	else if (pl->container_ () == this)
		1169	{
		1170	// removing a container should close it
		1171	close_container ();
		1172	}
		1173	else
		1174	esrv_del_item (pl->contr, count);
		1175	}
		1176
		1177	/* link the object above us */
		1178	// re-link, make sure compiler can easily use cmove
		1179	*(above ? &above->below : &ms.top) = below;
		1180	*(below ? &below->above : &ms.bot) = above;
		1181
		1182	above = 0;
		1183	below = 0;
		1184
		1185	ms.invalidate ();
		1186
		1187	int check_walk_off = !flag [FLAG_NO_APPLY];
		1188
		1189	if (object *pl = ms.player ())
		1190	{
		1191	if (pl->container_ () == this)
1230	/* If a container that the player is currently using somehow gets	1192	/* If a container that the player is currently using somehow gets
1231	* removed (most likely destroyed), update the player view	1193	* removed (most likely destroyed), update the player view
1232	* appropriately.	1194	* appropriately.
1233	*/	1195	*/
1234	if (tmp->container==op) {	1196	pl->close_container ();
1235	CLEAR_FLAG(op, FLAG_APPLIED);	1197
1236	tmp->container=NULL;	1198	//TODO: the floorbox prev/next might need updating
1237	}	1199	//esrv_del_item (pl->contr, count);
1238	tmp->contr->socket.update_look=1;	1200	//TODO: update floorbox to preserve ordering
		1201	if (pl->contr->ns)
		1202	pl->contr->ns->floorbox_update ();
1239	}	1203	}
		1204
		1205	if (check_walk_off)
		1206	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1207	{
		1208	above = tmp->above;
		1209
		1210	/* No point updating the players look faces if he is the object
		1211	* being removed.
		1212	*/
		1213
1240	/* See if player moving off should effect something */	1214	/* See if object moving off should effect something */
1241	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1215	if ((move_type & tmp->move_off)
1242	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1216	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1243
1244	move_apply(tmp, op, NULL);	1217	move_apply (tmp, this, 0);
1245	if (was_destroyed (op, tag)) {
1246	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1247	"leaving object\n", &tmp->name, &tmp->arch->name);
1248	}	1218	}
1249	}
1250		1219
1251	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1220	if (affects_los ())
1252
1253	if(tmp->above == tmp)
1254	tmp->above = NULL;
1255	last=tmp;
1256	}
1257	/* last == NULL of there are no objects on this space */
1258	if (last==NULL) {
1259	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1260	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1261	* those out anyways, and if there are any flags set right now, they won't
1262	* be correct anyways.
1263	*/
1264	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1265	update_position(op->map, op->x, op->y);
1266	}
1267	else
1268	update_object(last, UP_OBJ_REMOVE);
1269
1270	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1271	update_all_los(op->map, op->x, op->y);	1221	update_all_los (map, x, y);
1272		1222	}
1273	}	1223	}
1274		1224
1275	/*	1225	/*
1276	* merge_ob(op,top):	1226	* merge_ob(op,top):
1277	*	1227	*
1278	* This function goes through all objects below and including top, and	1228	* This function goes through all objects below and including top, and
1279	* merges op to the first matching object.	1229	* merges op to the first matching object.
1280	* If top is NULL, it is calculated.	1230	* If top is NULL, it is calculated.
1281	* Returns pointer to object if it succeded in the merge, otherwise NULL	1231	* Returns pointer to object if it succeded in the merge, otherwise NULL
1282	*/	1232	*/
1283		1233	object *
1284	object *merge_ob(object *op, object *top) {	1234	merge_ob (object *op, object *top)
		1235	{
1285	if(!op->nrof)	1236	if (!op->nrof)
1286	return 0;	1237	return 0;
1287	if(top==NULL)	1238
		1239	if (!top)
1288	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1240	for (top = op; top && top->above; top = top->above)
		1241	;
		1242
1289	for(;top!=NULL;top=top->below) {	1243	for (; top; top = top->below)
1290	if(top==op)	1244	if (object::can_merge (op, top))
1291	continue;
1292	if (CAN_MERGE(op,top))
1293	{	1245	{
1294	top->nrof+=op->nrof;	1246	top->nrof += op->nrof;
1295	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1247
1296	op->weight = 0; /* Don't want any adjustements now */	1248	if (object *pl = top->visible_to ())
1297	remove_ob(op);	1249	esrv_update_item (UPD_NROF, pl, top);
1298	free_object(op);	1250
		1251	op->weight = 0; // cancel the addition above
		1252	op->carrying = 0; // must be 0 already
		1253
		1254	op->destroy ();
		1255
1299	return top;	1256	return top;
1300	}	1257	}
1301	}	1258
1302	return NULL;	1259	return 0;
1303	}	1260	}
1304		1261
		1262	void
		1263	object::expand_tail ()
		1264	{
		1265	if (more)
		1266	return;
		1267
		1268	object *prev = this;
		1269
		1270	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1271	{
		1272	object *op = at->instance ();
		1273
		1274	op->name = name;
		1275	op->name_pl = name_pl;
		1276	op->title = title;
		1277
		1278	op->head = this;
		1279	prev->more = op;
		1280
		1281	prev = op;
		1282	}
		1283	}
		1284
1305	/*	1285	/*
1306	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1286	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1307	* job preparing multi-part monsters	1287	* job preparing multi-part monsters.
1308	*/	1288	*/
		1289	object *
1309	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1290	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1310	object* tmp;	1291	{
1311	if (op->head)	1292	op->remove ();
1312	op=op->head;	1293
1313	for (tmp=op;tmp;tmp=tmp->more){	1294	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1295	{
1314	tmp->x=x+tmp->arch->clone.x;	1296	tmp->x = x + tmp->arch->x;
1315	tmp->y=y+tmp->arch->clone.y;	1297	tmp->y = y + tmp->arch->y;
1316	}	1298	}
		1299
1317	return insert_ob_in_map (op, m, originator, flag);	1300	return insert_ob_in_map (op, m, originator, flag);
1318	}	1301	}
1319		1302
1320	/*	1303	/*
1321	* insert_ob_in_map (op, map, originator, flag):	1304	* insert_ob_in_map (op, map, originator, flag):
1322	* This function inserts the object in the two-way linked list	1305	* This function inserts the object in the two-way linked list
…		…
1332	* Passing 0 for flag gives proper default values, so flag really only needs	1315	* Passing 0 for flag gives proper default values, so flag really only needs
1333	* to be set if special handling is needed.	1316	* to be set if special handling is needed.
1334	*	1317	*
1335	* Return value:	1318	* Return value:
1336	* new object if 'op' was merged with other object	1319	* new object if 'op' was merged with other object
1337	* NULL if 'op' was destroyed	1320	* NULL if there was an error (destroyed, blocked etc.)
1338	* just 'op' otherwise	1321	* just 'op' otherwise
1339	*/	1322	*/
1340		1323	object *
1341	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1324	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1342	{	1325	{
1343	object *tmp, *top, *floor=NULL;	1326	op->remove ();
1344	sint16 x,y;
1345		1327
1346	if (QUERY_FLAG (op, FLAG_FREED)) {	1328	if (m == &freed_map)//D TODO: remove soon
1347	LOG (llevError, "Trying to insert freed object!\n");	1329	{//D
1348	return NULL;	1330	LOG (llevError | logBacktrace, "tries to insert object on freed objects map: %s", op->debug_desc ());//D
		1331	}//D
		1332
		1333	/* Ideally, the caller figures this out. However, it complicates a lot
		1334	* of areas of callers (eg, anything that uses find_free_spot would now
		1335	* need extra work
		1336	*/
		1337	maptile *newmap = m;
		1338	if (!xy_normalise (newmap, op->x, op->y))
1349	}	1339	{
1350	if(m==NULL) {	1340	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
1351	dump_object(op);
1352	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1353	return op;	1341	return 0;
1354	}	1342	}
1355	if(out_of_map(m,op->x,op->y)) {	1343
1356	dump_object(op);	1344	if (object *more = op->more)
1357	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1345	if (!insert_ob_in_map (more, m, originator, flag))
1358	#ifdef MANY_CORES
1359	/* Better to catch this here, as otherwise the next use of this object
1360	* is likely to cause a crash. Better to find out where it is getting
1361	* improperly inserted.
1362	*/
1363	abort();
1364	#endif
1365	return op;	1346	return 0;
1366	}
1367	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1368	dump_object(op);
1369	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1370	return op;
1371	}
1372	if(op->more!=NULL) {
1373	/* The part may be on a different map. */
1374		1347
1375	object *more = op->more;	1348	op->flag [FLAG_REMOVED] = false;
		1349	op->env = 0;
		1350	op->map = newmap;
1376		1351
1377	/* We really need the caller to normalize coordinates - if	1352	mapspace &ms = op->ms ();
1378	* we set the map, that doesn't work if the location is within	1353
1379	* a map and this is straddling an edge. So only if coordinate	1354	/* this has to be done after we translate the coordinates.
1380	* is clear wrong do we normalize it.	1355	*/
		1356	if (op->nrof && !(flag & INS_NO_MERGE))
		1357	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1358	if (object::can_merge (op, tmp))
1381	*/	1359	{
1382	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1360	// TODO: we actually want to update tmp, not op,
1383	more->map = get_map_from_coord(m, &more->x, &more->y);	1361	// but some caller surely breaks when we return tmp
1384	} else if (!more->map) {	1362	// from here :/
1385	/* For backwards compatibility - when not dealing with tiled maps,	1363	op->nrof += tmp->nrof;
1386	* more->map should always point to the parent.	1364	tmp->destroy ();
1387	*/
1388	more->map = m;
1389	}	1365	}
1390		1366
1391	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1367	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1392	if ( ! op->head)	1368	op->clr_flag (FLAG_INV_LOCKED);
1393	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1369
1394	return NULL;	1370	if (!op->flag [FLAG_ALIVE])
		1371	op->clr_flag (FLAG_NO_STEAL);
		1372
		1373	if (flag & INS_BELOW_ORIGINATOR)
		1374	{
		1375	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1376	{
		1377	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1378	abort ();
1395	}	1379	}
		1380
		1381	if (!originator->is_on_map ())
		1382	{
		1383	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1384	op->debug_desc (), originator->debug_desc ());
		1385	abort ();
		1386	}
		1387
		1388	op->above = originator;
		1389	op->below = originator->below;
		1390	originator->below = op;
		1391
		1392	*(op->below ? &op->below->above : &ms.bot) = op;
		1393	}
		1394	else
1396	}	1395	{
1397	CLEAR_FLAG(op,FLAG_REMOVED);	1396	object *floor = 0;
		1397	object *top = ms.top;
1398		1398
1399	/* Ideally, the caller figures this out. However, it complicates a lot	1399	/* If there are other objects, then */
1400	* of areas of callers (eg, anything that uses find_free_spot would now	1400	if (top)
1401	* need extra work	1401	{
1402	*/	1402	/*
1403	op->map=get_map_from_coord(m, &op->x, &op->y);	1403	* If there are multiple objects on this space, we do some trickier handling.
1404	x = op->x;	1404	* We've already dealt with merging if appropriate.
1405	y = op->y;	1405	* Generally, we want to put the new object on top. But if
		1406	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1407	* floor, we want to insert above that and no further.
		1408	* Also, if there are spell objects on this space, we stop processing
		1409	* once we get to them. This reduces the need to traverse over all of
		1410	* them when adding another one - this saves quite a bit of cpu time
		1411	* when lots of spells are cast in one area. Currently, it is presumed
		1412	* that flying non pickable objects are spell objects.
		1413	*/
		1414	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1415	{
		1416	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
		1417	floor = tmp;
1406		1418
1407	/* this has to be done after we translate the coordinates.	1419	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1408	*/	1420	{
1409	if(op->nrof && !(flag & INS_NO_MERGE)) {	1421	/* We insert above top, so we want this object below this */
1410	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1422	top = tmp->below;
1411	if (CAN_MERGE(op,tmp)) {	1423	break;
1412	op->nrof+=tmp->nrof;	1424	}
1413	remove_ob(tmp);	1425
1414	free_object(tmp);	1426	top = tmp;
1415	}	1427	}
1416	}
1417		1428
1418	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1429	/* We let update_position deal with figuring out what the space
1419	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1430	* looks like instead of lots of conditions here.
1420	if (!QUERY_FLAG(op, FLAG_ALIVE))	1431	* makes things faster, and effectively the same result.
1421	CLEAR_FLAG(op, FLAG_NO_STEAL);	1432	*/
1422		1433
1423	if (flag & INS_BELOW_ORIGINATOR) {	1434	/* Have object 'fall below' other objects that block view.
1424	if (originator->map != op->map || originator->x != op->x ||	1435	* Unless those objects are exits.
1425	originator->y != op->y) {	1436	* If INS_ON_TOP is used, don't do this processing
1426	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1437	* Need to find the object that in fact blocks view, otherwise
1427	abort();	1438	* stacking is a bit odd.
		1439	*/
		1440	if (!(flag & INS_ON_TOP)
		1441	&& ms.flags () & P_BLOCKSVIEW
		1442	&& (op->face && !faces [op->face].visibility))
		1443	{
		1444	object *last;
		1445
		1446	for (last = top; last != floor; last = last->below)
		1447	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
		1448	break;
		1449
		1450	/* Check to see if we found the object that blocks view,
		1451	* and make sure we have a below pointer for it so that
		1452	* we can get inserted below this one, which requires we
		1453	* set top to the object below us.
		1454	*/
		1455	if (last && last->below && last != floor)
		1456	top = last->below;
		1457	}
		1458	} /* If objects on this space */
		1459
		1460	if (flag & INS_ABOVE_FLOOR_ONLY)
		1461	top = floor;
		1462
		1463	// insert object above top, or bottom-most if top = 0
		1464	if (!top)
		1465	{
		1466	op->below = 0;
		1467	op->above = ms.bot;
		1468	ms.bot = op;
		1469
		1470	*(op->above ? &op->above->below : &ms.top) = op;
1428	}	1471	}
1429	op->above = originator;
1430	op->below = originator->below;
1431	if (op->below) op->below->above = op;
1432	else SET_MAP_OB(op->map, op->x, op->y, op);
1433	/* since *below* originator, no need to update top */
1434	originator->below = op;
1435	} else {	1472	else
1436	/* If there are other objects, then */
1437	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1438	object *last=NULL;
1439	/*
1440	* If there are multiple objects on this space, we do some trickier handling.
1441	* We've already dealt with merging if appropriate.
1442	* Generally, we want to put the new object on top. But if
1443	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1444	* floor, we want to insert above that and no further.
1445	* Also, if there are spell objects on this space, we stop processing
1446	* once we get to them. This reduces the need to traverse over all of
1447	* them when adding another one - this saves quite a bit of cpu time
1448	* when lots of spells are cast in one area. Currently, it is presumed
1449	* that flying non pickable objects are spell objects.
1450	*/
1451
1452	while (top != NULL) {
1453	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1454	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1455	if (QUERY_FLAG(top, FLAG_NO_PICK)
1456	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1457	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1458	{
1459	/* We insert above top, so we want this object below this */
1460	top=top->below;
1461	break;
1462	}
1463	last = top;
1464	top = top->above;
1465	}
1466	/* Don't want top to be NULL, so set it to the last valid object */
1467	top = last;
1468
1469	/* We let update_position deal with figuring out what the space
1470	* looks like instead of lots of conditions here.
1471	* makes things faster, and effectively the same result.
1472	*/
1473
1474	/* Have object 'fall below' other objects that block view.
1475	* Unless those objects are exits, type 66
1476	* If INS_ON_TOP is used, don't do this processing
1477	* Need to find the object that in fact blocks view, otherwise
1478	* stacking is a bit odd.
1479	*/
1480	if (!(flag & INS_ON_TOP) &&
1481	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1482	(op->face && !op->face->visibility)) {
1483	for (last=top; last != floor; last=last->below)
1484	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1485	/* Check to see if we found the object that blocks view,
1486	* and make sure we have a below pointer for it so that
1487	* we can get inserted below this one, which requires we
1488	* set top to the object below us.
1489	*/
1490	if (last && last->below && last != floor) top=last->below;
1491	}
1492	} /* If objects on this space */
1493	if (flag & INS_MAP_LOAD)
1494	top = GET_MAP_TOP(op->map,op->x,op->y);
1495	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1496
1497	/* Top is the object that our object (op) is going to get inserted above.
1498	*/	1473	{
1499
1500	/* First object on this space */
1501	if (!top) {
1502	op->above = GET_MAP_OB(op->map, op->x, op->y);
1503	if (op->above) op->above->below = op;
1504	op->below = NULL;
1505	SET_MAP_OB(op->map, op->x, op->y, op);
1506	} else { /* get inserted into the stack above top */
1507	op->above = top->above;	1474	op->above = top->above;
1508	if (op->above) op->above->below = op;
1509	op->below = top;
1510	top->above = op;	1475	top->above = op;
		1476
		1477	op->below = top;
		1478	*(op->above ? &op->above->below : &ms.top) = op;
1511	}	1479	}
1512	if (op->above==NULL)	1480	}
1513	SET_MAP_TOP(op->map,op->x, op->y, op);
1514	} /* else not INS_BELOW_ORIGINATOR */
1515		1481
1516	if(op->type==PLAYER)	1482	if (op->is_player ())
		1483	{
1517	op->contr->do_los=1;	1484	op->contr->do_los = 1;
		1485	++op->map->players;
		1486	op->map->touch ();
		1487	}
1518		1488
1519	/* If we have a floor, we know the player, if any, will be above	1489	op->map->dirty = true;
1520	* it, so save a few ticks and start from there.
1521	*/
1522	if (!(flag & INS_MAP_LOAD))
1523	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1524	if (tmp->type == PLAYER)
1525	tmp->contr->socket.update_look=1;
1526	}
1527		1490
		1491	if (object *pl = ms.player ())
		1492	//TODO: the floorbox prev/next might need updating
		1493	//esrv_send_item (pl, op);
		1494	//TODO: update floorbox to preserve ordering
		1495	if (pl->contr->ns)
		1496	pl->contr->ns->floorbox_update ();
		1497
1528	/* If this object glows, it may affect lighting conditions that are	1498	/* If this object glows, it may affect lighting conditions that are
1529	* visible to others on this map. But update_all_los is really	1499	* visible to others on this map. But update_all_los is really
1530	* an inefficient way to do this, as it means los for all players	1500	* an inefficient way to do this, as it means los for all players
1531	* on the map will get recalculated. The players could very well	1501	* on the map will get recalculated. The players could very well
1532	* be far away from this change and not affected in any way -	1502	* be far away from this change and not affected in any way -
1533	* this should get redone to only look for players within range,	1503	* this should get redone to only look for players within range,
1534	* or just updating the P_NEED_UPDATE for spaces within this area	1504	* or just updating the P_UPTODATE for spaces within this area
1535	* of effect may be sufficient.	1505	* of effect may be sufficient.
1536	*/	1506	*/
1537	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1507	if (op->affects_los ())
		1508	{
		1509	op->ms ().invalidate ();
1538	update_all_los(op->map, op->x, op->y);	1510	update_all_los (op->map, op->x, op->y);
		1511	}
1539		1512
1540
1541	/* updates flags (blocked, alive, no magic, etc) for this map space */	1513	/* updates flags (blocked, alive, no magic, etc) for this map space */
1542	update_object(op,UP_OBJ_INSERT);	1514	update_object (op, UP_OBJ_INSERT);
1543		1515
		1516	INVOKE_OBJECT (INSERT, op);
1544		1517
1545	/* Don't know if moving this to the end will break anything. However,	1518	/* Don't know if moving this to the end will break anything. However,
1546	* we want to have update_look set above before calling this.	1519	* we want to have floorbox_update called before calling this.
1547	*	1520	*
1548	* check_move_on() must be after this because code called from	1521	* check_move_on() must be after this because code called from
1549	* check_move_on() depends on correct map flags (so functions like	1522	* check_move_on() depends on correct map flags (so functions like
1550	* blocked() and wall() work properly), and these flags are updated by	1523	* blocked() and wall() work properly), and these flags are updated by
1551	* update_object().	1524	* update_object().
1552	*/	1525	*/
1553		1526
1554	/* if this is not the head or flag has been passed, don't check walk on status */	1527	/* if this is not the head or flag has been passed, don't check walk on status */
1555
1556	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1528	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1529	{
1557	if (check_move_on(op, originator))	1530	if (check_move_on (op, originator, flag))
1558	return NULL;	1531	return 0;
1559		1532
1560	/* If we are a multi part object, lets work our way through the check	1533	/* If we are a multi part object, let's work our way through the check
1561	* walk on's.	1534	* walk on's.
1562	*/	1535	*/
1563	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1536	for (object *tmp = op->more; tmp; tmp = tmp->more)
1564	if (check_move_on (tmp, originator))	1537	if (check_move_on (tmp, originator, flag))
1565	return NULL;	1538	return 0;
1566	}	1539	}
		1540
1567	return op;	1541	return op;
1568	}	1542	}
1569		1543
1570	/* this function inserts an object in the map, but if it	1544	/* this function inserts an object in the map, but if it
1571	* finds an object of its own type, it'll remove that one first.	1545	* finds an object of its own type, it'll remove that one first.
1572	* op is the object to insert it under: supplies x and the map.	1546	* op is the object to insert it under: supplies x and the map.
1573	*/	1547	*/
1574	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1548	void
1575	object *tmp;	1549	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1576	object *tmp1;	1550	{
1577
1578	/* first search for itself and remove any old instances */	1551	/* first search for itself and remove any old instances */
1579		1552
1580	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1553	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1581	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1554	if (tmp->arch->archname == archname) /* same archetype */
1582	remove_ob(tmp);	1555	tmp->destroy ();
1583	free_object(tmp);
1584	}
1585	}
1586		1556
1587	tmp1=arch_to_object(find_archetype(arch_string));	1557	object *tmp = archetype::find (archname)->instance ();
1588		1558
1589		1559	tmp->x = op->x;
1590	tmp1->x = op->x; tmp1->y = op->y;	1560	tmp->y = op->y;
		1561
1591	insert_ob_in_map(tmp1,op->map,op,0);	1562	insert_ob_in_map (tmp, op->map, op, 0);
1592	}	1563	}
1593		1564
1594	/*	1565	object *
1595	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1566	object::insert_at (object *where, object *originator, int flags)
1596	* is returned contains nr objects, and the remaining parts contains	1567	{
1597	* the rest (or is removed and freed if that number is 0).	1568	if (where->env)
1598	* On failure, NULL is returned, and the reason put into the	1569	return where->env->insert (this);
1599	* global static errmsg array.	1570	else
1600	*/	1571	return where->map->insert (this, where->x, where->y, originator, flags);
		1572	}
1601		1573
1602	object *get_split_ob(object *orig_ob, uint32 nr) {	1574	// check whether we can put this into the map, respect max_volume, max_items
1603	object *newob;	1575	bool
1604	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1576	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1577	{
		1578	mapspace &ms = m->at (x, y);
1605		1579
1606	if(orig_ob->nrof<nr) {	1580	int items = ms.items ();
1607	sprintf(errmsg,"There are only %d %ss.",
1608	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1609	return NULL;
1610	}
1611	newob = object_create_clone(orig_ob);
1612	if((orig_ob->nrof-=nr)<1) {
1613	if ( ! is_removed)
1614	remove_ob(orig_ob);
1615	free_object2(orig_ob, 1);
1616	}
1617	else if ( ! is_removed) {
1618	if(orig_ob->env!=NULL)
1619	sub_weight (orig_ob->env,orig_ob->weight*nr);
1620	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1621	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1622	LOG(llevDebug,
1623	"Error, Tried to split object whose map is not in memory.\n");
1624	return NULL;
1625	}
1626	}
1627	newob->nrof=nr;
1628		1581
		1582	if (!items // testing !items ensures we can drop at least one item
		1583	|| (items < m->max_items
		1584	&& ms.volume () < m->max_volume))
1629	return newob;	1585	return true;
1630	}
1631		1586
		1587	if (originator)
		1588	originator->failmsgf (
		1589	"No matter how hard you try, you just cannot put the %s here! H<Try to remove some items from the floor first.>",
		1590	query_name ()
		1591	);
		1592
		1593	return false;
		1594	}
		1595
1632	/*	1596	/*
1633	* decrease_ob_nr(object, number) decreases a specified number from	1597	* decrease(object, number) decreases a specified number from
1634	* the amount of an object. If the amount reaches 0, the object	1598	* the amount of an object. If the amount reaches 0, the object
1635	* is subsequently removed and freed.	1599	* is subsequently removed and freed.
1636	*	1600	*
1637	* Return value: 'op' if something is left, NULL if the amount reached 0	1601	* Return value: 'op' if something is left, NULL if the amount reached 0
1638	*/	1602	*/
1639		1603	bool
1640	object *decrease_ob_nr (object *op, uint32 i)	1604	object::decrease (sint32 nr)
1641	{	1605	{
1642	object *tmp;	1606	if (!nr)
1643	player *pl;	1607	return true;
1644		1608
1645	if (i == 0) /* objects with op->nrof require this check */	1609	nr = min (nr, nrof);
		1610
		1611	if (nrof > nr)
		1612	{
		1613	weight_t oweight = total_weight ();
		1614
		1615	nrof -= nr;
		1616
		1617	if (object *pl = visible_to ())
		1618	esrv_update_item (UPD_NROF, pl, this);
		1619
		1620	adjust_weight (env, oweight, total_weight ());
		1621
		1622	return true;
		1623	}
		1624	else
		1625	{
		1626	destroy ();
		1627	return false;
		1628	}
		1629	}
		1630
		1631	/*
		1632	* split(ob,nr) splits up ob into two parts. The part which
		1633	* is returned contains nr objects, and the remaining parts contains
		1634	* the rest (or is removed and returned if that number is 0).
		1635	* On failure, NULL is returned.
		1636	*/
		1637	object *
		1638	object::split (sint32 nr)
		1639	{
		1640	int have = number_of ();
		1641
		1642	if (have < nr)
		1643	return 0;
		1644	else if (have == nr)
		1645	{
		1646	remove ();
		1647	return this;
		1648	}
		1649	else
		1650	{
		1651	decrease (nr);
		1652
		1653	object *op = deep_clone ();
		1654	op->nrof = nr;
1646	return op;	1655	return op;
1647
1648	if (i > op->nrof)
1649	i = op->nrof;
1650
1651	if (QUERY_FLAG (op, FLAG_REMOVED))
1652	{	1656	}
1653	op->nrof -= i;	1657	}
		1658
		1659	object *
		1660	insert_ob_in_ob (object *op, object *where)
		1661	{
		1662	if (!where)
1654	}	1663	{
1655	else if (op->env != NULL)	1664	char *dump = dump_object (op);
1656	{	1665	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1657	/* is this object in the players inventory, or sub container	1666	free (dump);
1658	* therein?
1659	*/
1660	tmp = is_player_inv (op->env);
1661	/* nope. Is this a container the player has opened?
1662	* If so, set tmp to that player.
1663	* IMO, searching through all the players will mostly
1664	* likely be quicker than following op->env to the map,
1665	* and then searching the map for a player.
1666	*/
1667	if (!tmp) {
1668	for (pl=first_player; pl; pl=pl->next)
1669	if (pl->ob->container == op->env) break;
1670	if (pl) tmp=pl->ob;
1671	else tmp=NULL;
1672	}
1673
1674	if (i < op->nrof) {
1675	sub_weight (op->env, op->weight * i);
1676	op->nrof -= i;
1677	if (tmp) {
1678	esrv_send_item(tmp, op);
1679	}
1680	} else {
1681	remove_ob (op);
1682	op->nrof = 0;
1683	if (tmp) {
1684	esrv_del_item(tmp->contr, op->count);
1685	}
1686	}
1687	}
1688	else
1689	{
1690	object *above = op->above;
1691
1692	if (i < op->nrof) {
1693	op->nrof -= i;
1694	} else {
1695	remove_ob (op);
1696	op->nrof = 0;
1697	}
1698	/* Since we just removed op, op->above is null */
1699	for (tmp = above; tmp != NULL; tmp = tmp->above)
1700	if (tmp->type == PLAYER) {
1701	if (op->nrof)
1702	esrv_send_item(tmp, op);
1703	else
1704	esrv_del_item(tmp->contr, op->count);
1705	}
1706	}
1707
1708	if (op->nrof) {
1709	return op;	1667	return op;
1710	} else {	1668	}
1711	free_object (op);	1669
1712	return NULL;	1670	if (where->head_ () != where)
1713	}	1671	{
1714	}	1672	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1715		1673	where = where->head;
1716	/*
1717	* add_weight(object, weight) adds the specified weight to an object,
1718	* and also updates how much the environment(s) is/are carrying.
1719	*/
1720
1721	void add_weight (object *op, signed long weight) {
1722	while (op!=NULL) {
1723	if (op->type == CONTAINER) {
1724	weight=(signed long)(weight*(100-op->stats.Str)/100);
1725	}
1726	op->carrying+=weight;
1727	op=op->env;
1728	}	1674	}
1729	}
1730		1675
		1676	return where->insert (op);
		1677	}
		1678
1731	/*	1679	/*
1732	* insert_ob_in_ob(op,environment):	1680	* env->insert (op)
1733	* This function inserts the object op in the linked list	1681	* This function inserts the object op in the linked list
1734	* inside the object environment.	1682	* inside the object environment.
1735	*	1683	*
1736	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1737	* the inventory at the last position or next to other objects of the same
1738	* type.
1739	* Frank: Now sorted by type, archetype and magic!
1740	*
1741	* The function returns now pointer to inserted item, and return value can	1684	* The function returns now pointer to inserted item, and return value can
1742	* be != op, if items are merged. -Tero	1685	* be != op, if items are merged. -Tero
1743	*/	1686	*/
1744		1687	object *
1745	object *insert_ob_in_ob(object *op,object *where) {	1688	object::insert (object *op)
1746	object *tmp, *otmp;	1689	{
1747
1748	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1749	dump_object(op);
1750	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1751	return op;
1752	}
1753	if(where==NULL) {
1754	dump_object(op);
1755	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1756	return op;
1757	}
1758	if (where->head) {
1759	LOG(llevDebug,
1760	"Warning: Tried to insert object wrong part of multipart object.\n");
1761	where = where->head;
1762	}
1763	if (op->more) {	1690	if (op->more)
		1691	{
1764	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1692	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1765	&op->name, op->count);
1766	return op;	1693	return op;
1767	}	1694	}
1768	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1695
1769	CLEAR_FLAG(op, FLAG_REMOVED);	1696	op->remove ();
		1697
		1698	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1699
1770	if(op->nrof) {	1700	if (op->nrof)
1771	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1701	for (object *tmp = inv; tmp; tmp = tmp->below)
1772	if ( CAN_MERGE(tmp,op) ) {	1702	if (object::can_merge (tmp, op))
		1703	{
1773	/* return the original object and remove inserted object	1704	/* return the original object and remove inserted object
1774	(client needs the original object) */	1705	(client prefers the original object) */
		1706
		1707	// carrying must be 0 for mergable objects
		1708	weight_t oweight = weight_t (tmp->weight) * tmp->nrof;
		1709
1775	tmp->nrof += op->nrof;	1710	tmp->nrof += op->nrof;
1776	/* Weight handling gets pretty funky. Since we are adding to	1711
1777	* tmp->nrof, we need to increase the weight.	1712	if (object *pl = tmp->visible_to ())
1778	*/	1713	esrv_update_item (UPD_NROF, pl, tmp);
1779	add_weight (where, op->weight*op->nrof);	1714
1780	SET_FLAG(op, FLAG_REMOVED);	1715	adjust_weight (this, oweight, weight_t (tmp->weight) * tmp->nrof);
1781	free_object(op); /* free the inserted object */	1716
		1717	op->destroy ();
1782	op = tmp;	1718	op = tmp;
1783	remove_ob (op); /* and fix old object's links */	1719	goto inserted;
1784	CLEAR_FLAG(op, FLAG_REMOVED);
1785	break;
1786	}	1720	}
1787		1721
1788	/* I assume combined objects have no inventory	1722	op->owner = 0; // it's his/hers now. period.
1789	* We add the weight - this object could have just been removed	1723	op->map = 0;
1790	* (if it was possible to merge). calling remove_ob will subtract	1724	op->x = 0;
1791	* the weight, so we need to add it in again, since we actually do	1725	op->y = 0;
1792	* the linking below
1793	*/
1794	add_weight (where, op->weight*op->nrof);
1795	} else
1796	add_weight (where, (op->weight+op->carrying));
1797		1726
1798	otmp=is_player_inv(where);
1799	if (otmp&&otmp->contr!=NULL) {
1800	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1801	fix_player(otmp);
1802	}
1803
1804	op->map=NULL;
1805	op->env=where;
1806	op->above=NULL;	1727	op->above = 0;
1807	op->below=NULL;	1728	op->below = inv;
1808	op->x=0,op->y=0;	1729	op->env = this;
1809		1730
		1731	if (inv)
		1732	inv->above = op;
		1733
		1734	inv = op;
		1735
		1736	op->flag [FLAG_REMOVED] = 0;
		1737
		1738	if (object *pl = op->visible_to ())
		1739	esrv_send_item (pl, op);
		1740
		1741	adjust_weight (this, 0, op->total_weight ());
		1742
		1743	inserted:
1810	/* reset the light list and los of the players on the map */	1744	/* reset the light list and los of the players on the map */
1811	if((op->glow_radius!=0)&&where->map)	1745	if (op->glow_radius && is_on_map ())
1812	{	1746	{
1813	#ifdef DEBUG_LIGHTS	1747	update_stats ();
1814	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1748	update_all_los (map, x, y);
1815	op->name);
1816	#endif /* DEBUG_LIGHTS */
1817	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1818	}	1749	}
		1750	else if (is_player ())
		1751	// if this is a player's inventory, update stats
		1752	contr->queue_stats_update ();
1819		1753
1820	/* Client has no idea of ordering so lets not bother ordering it here.	1754	INVOKE_OBJECT (INSERT, this);
1821	* It sure simplifies this function...	1755
1822	*/
1823	if (where->inv==NULL)
1824	where->inv=op;
1825	else {
1826	op->below = where->inv;
1827	op->below->above = op;
1828	where->inv = op;
1829	}
1830	return op;	1756	return op;
1831	}	1757	}
1832		1758
1833	/*	1759	/*
1834	* Checks if any objects has a move_type that matches objects	1760	* Checks if any objects has a move_type that matches objects
…		…
1848	*	1774	*
1849	* MSW 2001-07-08: Check all objects on space, not just those below	1775	* MSW 2001-07-08: Check all objects on space, not just those below
1850	* object being inserted. insert_ob_in_map may not put new objects	1776	* object being inserted. insert_ob_in_map may not put new objects
1851	* on top.	1777	* on top.
1852	*/	1778	*/
1853		1779	int
1854	int check_move_on (object *op, object *originator)	1780	check_move_on (object *op, object *originator, int flags)
1855	{	1781	{
		1782	if (op->flag [FLAG_NO_APPLY])
		1783	return 0;
		1784
1856	object *tmp;	1785	object *tmp;
1857	tag_t tag;
1858	mapstruct *m=op->map;	1786	maptile *m = op->map;
1859	int x=op->x, y=op->y;	1787	int x = op->x, y = op->y;
1860	MoveType move_on, move_slow, move_block;
1861		1788
1862	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1789	mapspace &ms = m->at (x, y);
1863	return 0;
1864		1790
1865	tag = op->count;	1791	ms.update ();
1866		1792
1867	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1793	MoveType move_on = ms.move_on;
1868	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1794	MoveType move_slow = ms.move_slow;
1869	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1795	MoveType move_block = ms.move_block;
1870		1796
1871	/* if nothing on this space will slow op down or be applied,	1797	/* if nothing on this space will slow op down or be applied,
1872	* no need to do checking below. have to make sure move_type	1798	* no need to do checking below. have to make sure move_type
1873	* is set, as lots of objects don't have it set - we treat that	1799	* is set, as lots of objects don't have it set - we treat that
1874	* as walking.	1800	* as walking.
1875	*/	1801	*/
1876	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1802	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1877	return 0;	1803	return 0;
1878		1804
1879	/* This is basically inverse logic of that below - basically,	1805	/* This is basically inverse logic of that below - basically,
1880	* if the object can avoid the move on or slow move, they do so,	1806	* if the object can avoid the move on or slow move, they do so,
1881	* but can't do it if the alternate movement they are using is	1807	* but can't do it if the alternate movement they are using is
1882	* blocked. Logic on this seems confusing, but does seem correct.	1808	* blocked. Logic on this seems confusing, but does seem correct.
1883	*/	1809	*/
1884	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1810	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1885	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1811	return 0;
1886		1812
1887	/* The objects have to be checked from top to bottom.	1813	/* The objects have to be checked from top to bottom.
1888	* Hence, we first go to the top:	1814	* Hence, we first go to the top:
1889	*/	1815	*/
1890		1816	for (object *next, *tmp = ms.top; tmp; tmp = next)
1891	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
1892	tmp->above!=NULL; tmp=tmp->above) {
1893	/* Trim the search when we find the first other spell effect
1894	* this helps performance so that if a space has 50 spell objects,
1895	* we don't need to check all of them.
1896	*/
1897	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
1898	}	1817	{
1899	for(;tmp!=NULL; tmp=tmp->below) {	1818	next = tmp->below;
		1819
		1820	if (tmp == op)
1900	if (tmp == op) continue; /* Can't apply yourself */	1821	continue; /* Can't apply yourself */
1901		1822
1902	/* Check to see if one of the movement types should be slowed down.	1823	/* Check to see if one of the movement types should be slowed down.
1903	* Second check makes sure that the movement types not being slowed	1824	* Second check makes sure that the movement types not being slowed
1904	* (~slow_move) is not blocked on this space - just because the	1825	* (~slow_move) is not blocked on this space - just because the
1905	* space doesn't slow down swimming (for example), if you can't actually	1826	* space doesn't slow down swimming (for example), if you can't actually
1906	* swim on that space, can't use it to avoid the penalty.	1827	* swim on that space, can't use it to avoid the penalty.
1907	*/	1828	*/
1908	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1829	if (!op->flag [FLAG_WIZPASS])
		1830	{
1909	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1831	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1910	((op->move_type & tmp->move_slow) &&
1911	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1832	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
1912		1833	{
1913	float diff;
1914
1915	diff = tmp->move_slow_penalty*FABS(op->speed);	1834	float diff = tmp->move_slow_penalty * fabs (op->speed);
1916	if (op->type == PLAYER) {	1835
		1836	if (op->is_player ())
1917	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1837	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
1918	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1838	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
1919	diff /= 4.0;	1839	diff /= 4.0;
1920	}	1840
1921	}
1922	op->speed_left -= diff;	1841	op->speed_left -= diff;
1923	}	1842	}
1924	}	1843	}
1925		1844
1926	/* Basically same logic as above, except now for actual apply. */	1845	/* Basically same logic as above, except now for actual apply. */
1927	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1846	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1928	((op->move_type & tmp->move_on) &&
1929	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1847	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
		1848	{
		1849	if ((flags & INS_NO_AUTO_EXIT)
		1850	&& (tmp->type == EXIT || tmp->type == TELEPORTER
		1851	|| tmp->type == HOLE || tmp->type == TRAPDOOR)) //TODO: temporary, fix exits instead
		1852	continue;
1930		1853
1931	move_apply(tmp, op, originator);	1854	move_apply (tmp, op, originator);
		1855
1932	if (was_destroyed (op, tag))	1856	if (op->destroyed ())
1933	return 1;	1857	return 1;
1934		1858
1935	/* what the person/creature stepped onto has moved the object	1859	/* what the person/creature stepped onto has moved the object
1936	* someplace new. Don't process any further - if we did,	1860	* someplace new. Don't process any further - if we did,
1937	* have a feeling strange problems would result.	1861	* have a feeling strange problems would result.
1938	*/	1862	*/
1939	if (op->map != m || op->x != x || op->y != y) return 0;	1863	if (op->map != m || op->x != x || op->y != y)
		1864	return 0;
1940	}	1865	}
1941	}	1866	}
		1867
1942	return 0;	1868	return 0;
1943	}	1869	}
1944		1870
1945	/*	1871	/*
1946	* present_arch(arch, map, x, y) searches for any objects with	1872	* present_arch(arch, map, x, y) searches for any objects with
1947	* a matching archetype at the given map and coordinates.	1873	* a matching archetype at the given map and coordinates.
1948	* The first matching object is returned, or NULL if none.	1874	* The first matching object is returned, or NULL if none.
1949	*/	1875	*/
1950		1876	object *
1951	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1877	present_arch (const archetype *at, maptile *m, int x, int y)
1952	object *tmp;	1878	{
1953	if(m==NULL || out_of_map(m,x,y)) {	1879	if (!m || out_of_map (m, x, y))
		1880	{
1954	LOG(llevError,"Present_arch called outside map.\n");	1881	LOG (llevError, "Present_arch called outside map.\n");
1955	return NULL;	1882	return NULL;
1956	}	1883	}
1957	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1884
1958	if(tmp->arch == at)	1885	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1886	if (tmp->arch->archname == at->archname)
1959	return tmp;	1887	return tmp;
		1888
1960	return NULL;	1889	return NULL;
1961	}	1890	}
1962		1891
1963	/*	1892	/*
1964	* present(type, map, x, y) searches for any objects with	1893	* present(type, map, x, y) searches for any objects with
1965	* a matching type variable at the given map and coordinates.	1894	* a matching type variable at the given map and coordinates.
1966	* The first matching object is returned, or NULL if none.	1895	* The first matching object is returned, or NULL if none.
1967	*/	1896	*/
1968		1897	object *
1969	object *present(unsigned char type,mapstruct *m, int x,int y) {	1898	present (unsigned char type, maptile *m, int x, int y)
1970	object *tmp;	1899	{
1971	if(out_of_map(m,x,y)) {	1900	if (out_of_map (m, x, y))
		1901	{
1972	LOG(llevError,"Present called outside map.\n");	1902	LOG (llevError, "Present called outside map.\n");
1973	return NULL;	1903	return NULL;
1974	}	1904	}
1975	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1905
		1906	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1976	if(tmp->type==type)	1907	if (tmp->type == type)
1977	return tmp;	1908	return tmp;
		1909
1978	return NULL;	1910	return NULL;
1979	}	1911	}
1980		1912
1981	/*	1913	/*
1982	* present_in_ob(type, object) searches for any objects with	1914	* present_in_ob(type, object) searches for any objects with
1983	* a matching type variable in the inventory of the given object.	1915	* a matching type variable in the inventory of the given object.
1984	* The first matching object is returned, or NULL if none.	1916	* The first matching object is returned, or NULL if none.
1985	*/	1917	*/
1986		1918	object *
1987	object *present_in_ob(unsigned char type, const object *op) {	1919	present_in_ob (unsigned char type, const object *op)
1988	object *tmp;	1920	{
1989	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1921	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1990	if(tmp->type==type)	1922	if (tmp->type == type)
1991	return tmp;	1923	return tmp;
		1924
1992	return NULL;	1925	return NULL;
1993	}	1926	}
1994		1927
1995	/*	1928	/*
1996	* present_in_ob (type, str, object) searches for any objects with	1929	* present_in_ob (type, str, object) searches for any objects with
…		…
2004	* str is the string to match against. Note that we match against	1937	* str is the string to match against. Note that we match against
2005	* the object name, not the archetype name. this is so that the	1938	* the object name, not the archetype name. this is so that the
2006	* spell code can use one object type (force), but change it's name	1939	* spell code can use one object type (force), but change it's name
2007	* to be unique.	1940	* to be unique.
2008	*/	1941	*/
2009		1942	object *
2010	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1943	present_in_ob_by_name (int type, const char *str, const object *op)
2011	object *tmp;	1944	{
2012
2013	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1945	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2014	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1946	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2015	return tmp;	1947	return tmp;
2016	}	1948
2017	return NULL;	1949	return 0;
2018	}	1950	}
2019		1951
2020	/*	1952	/*
2021	* present_arch_in_ob(archetype, object) searches for any objects with	1953	* present_arch_in_ob(archetype, object) searches for any objects with
2022	* a matching archetype in the inventory of the given object.	1954	* a matching archetype in the inventory of the given object.
2023	* The first matching object is returned, or NULL if none.	1955	* The first matching object is returned, or NULL if none.
2024	*/	1956	*/
2025		1957	object *
2026	object *present_arch_in_ob(const archetype *at, const object *op) {	1958	present_arch_in_ob (const archetype *at, const object *op)
2027	object *tmp;	1959	{
2028	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1960	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2029	if( tmp->arch == at)	1961	if (tmp->arch->archname == at->archname)
2030	return tmp;	1962	return tmp;
		1963
2031	return NULL;	1964	return NULL;
2032	}	1965	}
2033		1966
2034	/*	1967	/*
2035	* activate recursively a flag on an object inventory	1968	* activate recursively a flag on an object inventory
2036	*/	1969	*/
		1970	void
2037	void flag_inv(object*op, int flag){	1971	flag_inv (object *op, int flag)
2038	object *tmp;	1972	{
2039	if(op->inv)
2040	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1973	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2041	SET_FLAG(tmp, flag);	1974	{
		1975	tmp->set_flag (flag);
2042	flag_inv(tmp,flag);	1976	flag_inv (tmp, flag);
2043	}	1977	}
		1978	}
		1979
2044	}/*	1980	/*
2045	* desactivate recursively a flag on an object inventory	1981	* deactivate recursively a flag on an object inventory
2046	*/	1982	*/
		1983	void
2047	void unflag_inv(object*op, int flag){	1984	unflag_inv (object *op, int flag)
2048	object *tmp;	1985	{
2049	if(op->inv)
2050	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1986	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2051	CLEAR_FLAG(tmp, flag);	1987	{
		1988	tmp->clr_flag (flag);
2052	unflag_inv(tmp,flag);	1989	unflag_inv (tmp, flag);
2053	}	1990	}
2054	}
2055
2056	/*
2057	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2058	* all it's inventory (recursively).
2059	* If checksums are used, a player will get set_cheat called for
2060	* him/her-self and all object carried by a call to this function.
2061	*/
2062
2063	void set_cheat(object *op) {
2064	SET_FLAG(op, FLAG_WAS_WIZ);
2065	flag_inv(op, FLAG_WAS_WIZ);
2066	}	1991	}
2067		1992
2068	/*	1993	/*
2069	* find_free_spot(object, map, x, y, start, stop) will search for	1994	* find_free_spot(object, map, x, y, start, stop) will search for
2070	* a spot at the given map and coordinates which will be able to contain	1995	* a spot at the given map and coordinates which will be able to contain
…		…
2072	* to search (see the freearr_x/y[] definition).	1997	* to search (see the freearr_x/y[] definition).
2073	* It returns a random choice among the alternatives found.	1998	* It returns a random choice among the alternatives found.
2074	* start and stop are where to start relative to the free_arr array (1,9	1999	* start and stop are where to start relative to the free_arr array (1,9
2075	* does all 4 immediate directions). This returns the index into the	2000	* does all 4 immediate directions). This returns the index into the
2076	* array of the free spot, -1 if no spot available (dir 0 = x,y)	2001	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2077	* Note - this only checks to see if there is space for the head of the
2078	* object - if it is a multispace object, this should be called for all
2079	* pieces.
2080	* Note2: This function does correctly handle tiled maps, but does not	2002	* Note: This function does correctly handle tiled maps, but does not
2081	* inform the caller. However, insert_ob_in_map will update as	2003	* inform the caller. However, insert_ob_in_map will update as
2082	* necessary, so the caller shouldn't need to do any special work.	2004	* necessary, so the caller shouldn't need to do any special work.
2083	* Note - updated to take an object instead of archetype - this is necessary	2005	* Note - updated to take an object instead of archetype - this is necessary
2084	* because arch_blocked (now ob_blocked) needs to know the movement type	2006	* because arch_blocked (now ob_blocked) needs to know the movement type
2085	* to know if the space in question will block the object. We can't use	2007	* to know if the space in question will block the object. We can't use
2086	* the archetype because that isn't correct if the monster has been	2008	* the archetype because that isn't correct if the monster has been
2087	* customized, changed states, etc.	2009	* customized, changed states, etc.
2088	*/	2010	*/
2089		2011	int
2090	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2012	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
2091	int i,index=0, flag;	2013	{
2092	static int altern[SIZEOFFREE];	2014	int altern[SIZEOFFREE];
		2015	int index = 0;
2093		2016
2094	for(i=start;i<stop;i++) {	2017	for (int i = start; i < stop; i++)
2095	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2018	{
2096	if(!flag)	2019	mapxy pos (m, x, y); pos.move (i);
		2020
		2021	if (!pos.normalise ())
		2022	continue;
		2023
		2024	mapspace &ms = *pos;
		2025
		2026	if (ms.flags () & P_IS_ALIVE)
		2027	continue;
		2028
		2029	/* However, often
		2030	* ob doesn't have any move type (when used to place exits)
		2031	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2032	*/
		2033	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2034	{
2097	altern[index++]=i;	2035	altern [index++] = i;
		2036	continue;
		2037	}
2098		2038
2099	/* Basically, if we find a wall on a space, we cut down the search size.	2039	/* Basically, if we find a wall on a space, we cut down the search size.
2100	* In this way, we won't return spaces that are on another side of a wall.	2040	* In this way, we won't return spaces that are on another side of a wall.
2101	* This mostly work, but it cuts down the search size in all directions -	2041	* This mostly work, but it cuts down the search size in all directions -
2102	* if the space being examined only has a wall to the north and empty	2042	* if the space being examined only has a wall to the north and empty
2103	* spaces in all the other directions, this will reduce the search space	2043	* spaces in all the other directions, this will reduce the search space
2104	* to only the spaces immediately surrounding the target area, and	2044	* to only the spaces immediately surrounding the target area, and
2105	* won't look 2 spaces south of the target space.	2045	* won't look 2 spaces south of the target space.
2106	*/	2046	*/
2107	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2047	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2048	{
2108	stop=maxfree[i];	2049	stop = maxfree[i];
2109	}	2050	continue;
2110	if(!index) return -1;	2051	}
2111	return altern[RANDOM()%index];
2112	}
2113		2052
		2053	/* Note it is intentional that we check ob - the movement type of the
		2054	* head of the object should correspond for the entire object.
		2055	*/
		2056	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2057	continue;
		2058
		2059	if (ob->blocked (pos.m, pos.x, pos.y))
		2060	continue;
		2061
		2062	altern [index++] = i;
		2063	}
		2064
		2065	if (!index)
		2066	return -1;
		2067
		2068	return altern [rndm (index)];
		2069	}
		2070
2114	/*	2071	/*
2115	* find_first_free_spot(archetype, mapstruct, x, y) works like	2072	* find_first_free_spot(archetype, maptile, x, y) works like
2116	* find_free_spot(), but it will search max number of squares.	2073	* find_free_spot(), but it will search max number of squares.
2117	* But it will return the first available spot, not a random choice.	2074	* But it will return the first available spot, not a random choice.
2118	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2075	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2119	*/	2076	*/
2120		2077	int
2121	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2078	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2122	int i;	2079	{
2123	for(i=0;i<SIZEOFFREE;i++) {	2080	for (int i = 0; i < SIZEOFFREE; i++)
2124	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2081	if (!ob->blocked (m, x + DIRX (i), y + DIRY (i)))
2125	return i;	2082	return i;
2126	}	2083
2127	return -1;	2084	return -1;
2128	}	2085	}
2129		2086
2130	/*	2087	/*
2131	* The function permute(arr, begin, end) randomly reorders the array	2088	* The function permute(arr, begin, end) randomly reorders the array
2132	* arr[begin..end-1].	2089	* arr[begin..end-1].
		2090	* now uses a fisher-yates shuffle, old permute was broken
2133	*/	2091	*/
		2092	static void
2134	static void permute(int *arr, int begin, int end)	2093	permute (int *arr, int begin, int end)
2135	{	2094	{
2136	int i, j, tmp, len;	2095	arr += begin;
		2096	end -= begin;
2137		2097
2138	len = end-begin;	2098	while (--end)
2139	for(i = begin; i < end; i++)	2099	swap (arr [end], arr [rndm (end + 1)]);
2140	{
2141	j = begin+RANDOM()%len;
2142
2143	tmp = arr[i];
2144	arr[i] = arr[j];
2145	arr[j] = tmp;
2146	}
2147	}	2100	}
2148		2101
2149	/* new function to make monster searching more efficient, and effective!	2102	/* new function to make monster searching more efficient, and effective!
2150	* This basically returns a randomized array (in the passed pointer) of	2103	* This basically returns a randomized array (in the passed pointer) of
2151	* the spaces to find monsters. In this way, it won't always look for	2104	* the spaces to find monsters. In this way, it won't always look for
2152	* monsters to the north first. However, the size of the array passed	2105	* monsters to the north first. However, the size of the array passed
2153	* covers all the spaces, so within that size, all the spaces within	2106	* covers all the spaces, so within that size, all the spaces within
2154	* the 3x3 area will be searched, just not in a predictable order.	2107	* the 3x3 area will be searched, just not in a predictable order.
2155	*/	2108	*/
		2109	void
2156	void get_search_arr(int *search_arr)	2110	get_search_arr (int *search_arr)
2157	{	2111	{
2158	int i;	2112	int i;
2159		2113
2160	for(i = 0; i < SIZEOFFREE; i++)	2114	for (i = 0; i < SIZEOFFREE; i++)
2161	{
2162	search_arr[i] = i;	2115	search_arr[i] = i;
2163	}
2164		2116
2165	permute(search_arr, 1, SIZEOFFREE1+1);	2117	permute (search_arr, 1, SIZEOFFREE1 + 1);
2166	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2118	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2167	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2119	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2168	}	2120	}
2169		2121
2170	/*	2122	/*
2171	* find_dir(map, x, y, exclude) will search some close squares in the	2123	* find_dir(map, x, y, exclude) will search some close squares in the
2172	* given map at the given coordinates for live objects.	2124	* given map at the given coordinates for live objects.
…		…
2177	* Perhaps incorrectly, but I'm making the assumption that exclude	2129	* Perhaps incorrectly, but I'm making the assumption that exclude
2178	* is actually want is going to try and move there. We need this info	2130	* is actually want is going to try and move there. We need this info
2179	* because we have to know what movement the thing looking to move	2131	* because we have to know what movement the thing looking to move
2180	* there is capable of.	2132	* there is capable of.
2181	*/	2133	*/
2182		2134	int
2183	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2135	find_dir (maptile *m, int x, int y, object *exclude)
		2136	{
2184	int i,max=SIZEOFFREE, mflags;	2137	int max = SIZEOFFREE;
2185	sint16 nx, ny;
2186	object *tmp;
2187	mapstruct *mp;
2188	MoveType blocked, move_type;	2138	MoveType move_type;
2189		2139
2190	if (exclude && exclude->head) {	2140	if (exclude && exclude->head_ () != exclude)
		2141	{
2191	exclude = exclude->head;	2142	exclude = exclude->head;
2192	move_type = exclude->move_type;	2143	move_type = exclude->move_type;
2193	} else {	2144	}
		2145	else
		2146	{
2194	/* If we don't have anything, presume it can use all movement types. */	2147	/* If we don't have anything, presume it can use all movement types. */
2195	move_type=MOVE_ALL;	2148	move_type = MOVE_ALL;
		2149	}
		2150
		2151	for (int i = 1; i < max; i++)
2196	}	2152	{
		2153	mapxy pos (m, x, y);
		2154	pos.move (i);
2197		2155
2198	for(i=1;i<max;i++) {	2156	if (!pos.normalise ())
2199	mp = m;
2200	nx = x + freearr_x[i];	2157	max = maxfree[i];
2201	ny = y + freearr_y[i];	2158	else
		2159	{
		2160	mapspace &ms = *pos;
2202		2161
2203	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2162	if ((move_type & ms.move_block) == move_type)
2204	if (mflags & P_OUT_OF_MAP) {
2205	max = maxfree[i];	2163	max = maxfree [i];
2206	} else {
2207	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2208
2209	if ((move_type & blocked) == move_type) {
2210	max=maxfree[i];
2211	} else if (mflags & P_IS_ALIVE) {	2164	else if (ms.flags () & P_IS_ALIVE)
2212	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2165	{
2213	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2166	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2167	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2214	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2168	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2215	break;
2216	}
2217	}
2218	if(tmp) {
2219	return freedir[i];	2169	return freedir [i];
2220	}
2221	}	2170	}
2222	}	2171	}
2223	}	2172	}
		2173
2224	return 0;	2174	return 0;
2225	}	2175	}
2226		2176
2227	/*	2177	/*
2228	* distance(object 1, object 2) will return the square of the	2178	* distance(object 1, object 2) will return the square of the
2229	* distance between the two given objects.	2179	* distance between the two given objects.
2230	*/	2180	*/
2231		2181	int
2232	int distance(const object *ob1, const object *ob2) {	2182	distance (const object *ob1, const object *ob2)
2233	int i;	2183	{
2234	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2184	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2235	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2236	return i;
2237	}	2185	}
2238		2186
2239	/*	2187	/*
2240	* find_dir_2(delta-x,delta-y) will return a direction in which	2188	* find_dir_2(delta-x,delta-y) will return a direction value
2241	* an object which has subtracted the x and y coordinates of another	2189	* for running into direct [dx, dy].
2242	* object, needs to travel toward it.	2190	* (the opposite of crossfire's find_dir_2!)
2243	*/	2191	*/
2244		2192	int
2245	int find_dir_2(int x, int y) {	2193	find_dir_2 (int x, int y)
		2194	{
		2195	#if 1 // new algorithm
		2196	// this works by putting x, y into 16 sectors, which
		2197	// are not equal sized, but are a better approximation
		2198	// then the old algorithm, and then using a mapping
		2199	// table to map it into a direction value.
		2200	// basically, it maps these comparisons to each bit
		2201	// bit #3: x < 0
		2202	// bit #2: y < 0
		2203	// bit #1: x > y
		2204	// bit #0: x > 2y
		2205
		2206	static const uint8 dir[16] = {
		2207	4, 5, 4, 3,
		2208	2, 1, 2, 3,
		2209	6, 5, 6, 7,
		2210	8, 1, 8, 7,
		2211	};
		2212	int sector = 0;
		2213
		2214	// this is a bit ugly, but more likely to result in branchless code
		2215	sector |= x < 0 ? 8 : 0;
		2216	x = x < 0 ? -x : x; // abs
		2217
		2218	sector |= y < 0 ? 4 : 0;
		2219	y = y < 0 ? -y : y; // abs
		2220
		2221	if (x > y)
		2222	{
		2223	sector |= 2;
		2224
		2225	if (x > y * 2)
		2226	sector |= 1;
		2227	}
		2228	else
		2229	{
		2230	if (y > x * 2)
		2231	sector |= 1;
		2232	else if (!y)
		2233	return 0; // x == 0 here
		2234	}
		2235
		2236	return dir [sector];
		2237	#else // old algorithm
2246	int q;	2238	int q;
2247		2239
2248	if(y)	2240	if (y)
2249	q=x*100/y;	2241	q = 128 * x / y;
2250	else if (x)	2242	else if (x)
2251	q= -300*x;	2243	q = -512 * x; // to make it > 309
2252	else	2244	else
2253	return 0;	2245	return 0;
2254		2246
2255	if(y>0) {	2247	if (y > 0)
2256	if(q < -242)	2248	{
		2249	if (q < -309) return 7;
		2250	if (q < -52) return 6;
		2251	if (q < 52) return 5;
		2252	if (q < 309) return 4;
		2253
2257	return 3 ;	2254	return 3;
2258	if (q < -41)	2255	}
		2256	else
		2257	{
		2258	if (q < -309) return 3;
		2259	if (q < -52) return 2;
		2260	if (q < 52) return 1;
		2261	if (q < 309) return 8;
		2262
2259	return 2 ;	2263	return 7;
2260	if (q < 41)
2261	return 1 ;
2262	if (q < 242)
2263	return 8 ;
2264	return 7 ;
2265	}	2264	}
2266		2265	#endif
2267	if (q < -242)
2268	return 7 ;
2269	if (q < -41)
2270	return 6 ;
2271	if (q < 41)
2272	return 5 ;
2273	if (q < 242)
2274	return 4 ;
2275
2276	return 3 ;
2277	}
2278
2279	/*
2280	* absdir(int): Returns a number between 1 and 8, which represent
2281	* the "absolute" direction of a number (it actually takes care of
2282	* "overflow" in previous calculations of a direction).
2283	*/
2284
2285	int absdir(int d) {
2286	while(d<1) d+=8;
2287	while(d>8) d-=8;
2288	return d;
2289	}	2266	}
2290		2267
2291	/*	2268	/*
2292	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2269	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2293	* between two directions (which are expected to be absolute (see absdir())	2270	* between two directions (which are expected to be absolute (see absdir())
2294	*/	2271	*/
2295		2272	int
2296	int dirdiff(int dir1, int dir2) {	2273	dirdiff (int dir1, int dir2)
2297	int d;	2274	{
2298	d = abs(dir1 - dir2);	2275	int d = abs (dir1 - dir2);
2299	if(d>4)	2276
2300	d = 8 - d;	2277	return d > 4 ? 8 - d : d;
2301	return d;
2302	}	2278	}
2303		2279
2304	/* peterm:	2280	/* peterm:
2305	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2281	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
2306	* Basically, this is a table of directions, and what directions	2282	* Basically, this is a table of directions, and what directions
…		…
2308	* This basically means that if direction is 15, then it could either go	2284	* This basically means that if direction is 15, then it could either go
2309	* direction 4, 14, or 16 to get back to where we are.	2285	* direction 4, 14, or 16 to get back to where we are.
2310	* Moved from spell_util.c to object.c with the other related direction	2286	* Moved from spell_util.c to object.c with the other related direction
2311	* functions.	2287	* functions.
2312	*/	2288	*/
2313
2314	int reduction_dir[SIZEOFFREE][3] = {	2289	static const int reduction_dir[SIZEOFFREE][3] = {
2315	{0,0,0}, /* 0 */	2290	{0, 0, 0}, /* 0 */
2316	{0,0,0}, /* 1 */	2291	{0, 0, 0}, /* 1 */
2317	{0,0,0}, /* 2 */	2292	{0, 0, 0}, /* 2 */
2318	{0,0,0}, /* 3 */	2293	{0, 0, 0}, /* 3 */
2319	{0,0,0}, /* 4 */	2294	{0, 0, 0}, /* 4 */
2320	{0,0,0}, /* 5 */	2295	{0, 0, 0}, /* 5 */
2321	{0,0,0}, /* 6 */	2296	{0, 0, 0}, /* 6 */
2322	{0,0,0}, /* 7 */	2297	{0, 0, 0}, /* 7 */
2323	{0,0,0}, /* 8 */	2298	{0, 0, 0}, /* 8 */
2324	{8,1,2}, /* 9 */	2299	{8, 1, 2}, /* 9 */
2325	{1,2,-1}, /* 10 */	2300	{1, 2, -1}, /* 10 */
2326	{2,10,12}, /* 11 */	2301	{2, 10, 12}, /* 11 */
2327	{2,3,-1}, /* 12 */	2302	{2, 3, -1}, /* 12 */
2328	{2,3,4}, /* 13 */	2303	{2, 3, 4}, /* 13 */
2329	{3,4,-1}, /* 14 */	2304	{3, 4, -1}, /* 14 */
2330	{4,14,16}, /* 15 */	2305	{4, 14, 16}, /* 15 */
2331	{5,4,-1}, /* 16 */	2306	{5, 4, -1}, /* 16 */
2332	{4,5,6}, /* 17 */	2307	{4, 5, 6}, /* 17 */
2333	{6,5,-1}, /* 18 */	2308	{6, 5, -1}, /* 18 */
2334	{6,20,18}, /* 19 */	2309	{6, 20, 18}, /* 19 */
2335	{7,6,-1}, /* 20 */	2310	{7, 6, -1}, /* 20 */
2336	{6,7,8}, /* 21 */	2311	{6, 7, 8}, /* 21 */
2337	{7,8,-1}, /* 22 */	2312	{7, 8, -1}, /* 22 */
2338	{8,22,24}, /* 23 */	2313	{8, 22, 24}, /* 23 */
2339	{8,1,-1}, /* 24 */	2314	{8, 1, -1}, /* 24 */
2340	{24,9,10}, /* 25 */	2315	{24, 9, 10}, /* 25 */
2341	{9,10,-1}, /* 26 */	2316	{9, 10, -1}, /* 26 */
2342	{10,11,-1}, /* 27 */	2317	{10, 11, -1}, /* 27 */
2343	{27,11,29}, /* 28 */	2318	{27, 11, 29}, /* 28 */
2344	{11,12,-1}, /* 29 */	2319	{11, 12, -1}, /* 29 */
2345	{12,13,-1}, /* 30 */	2320	{12, 13, -1}, /* 30 */
2346	{12,13,14}, /* 31 */	2321	{12, 13, 14}, /* 31 */
2347	{13,14,-1}, /* 32 */	2322	{13, 14, -1}, /* 32 */
2348	{14,15,-1}, /* 33 */	2323	{14, 15, -1}, /* 33 */
2349	{33,15,35}, /* 34 */	2324	{33, 15, 35}, /* 34 */
2350	{16,15,-1}, /* 35 */	2325	{16, 15, -1}, /* 35 */
2351	{17,16,-1}, /* 36 */	2326	{17, 16, -1}, /* 36 */
2352	{18,17,16}, /* 37 */	2327	{18, 17, 16}, /* 37 */
2353	{18,17,-1}, /* 38 */	2328	{18, 17, -1}, /* 38 */
2354	{18,19,-1}, /* 39 */	2329	{18, 19, -1}, /* 39 */
2355	{41,19,39}, /* 40 */	2330	{41, 19, 39}, /* 40 */
2356	{19,20,-1}, /* 41 */	2331	{19, 20, -1}, /* 41 */
2357	{20,21,-1}, /* 42 */	2332	{20, 21, -1}, /* 42 */
2358	{20,21,22}, /* 43 */	2333	{20, 21, 22}, /* 43 */
2359	{21,22,-1}, /* 44 */	2334	{21, 22, -1}, /* 44 */
2360	{23,22,-1}, /* 45 */	2335	{23, 22, -1}, /* 45 */
2361	{45,47,23}, /* 46 */	2336	{45, 47, 23}, /* 46 */
2362	{23,24,-1}, /* 47 */	2337	{23, 24, -1}, /* 47 */
2363	{24,9,-1}}; /* 48 */	2338	{24, 9, -1}
		2339	}; /* 48 */
2364		2340
2365	/* Recursive routine to step back and see if we can	2341	/* Recursive routine to step back and see if we can
2366	* find a path to that monster that we found. If not,	2342	* find a path to that monster that we found. If not,
2367	* we don't bother going toward it. Returns 1 if we	2343	* we don't bother going toward it. Returns 1 if we
2368	* can see a direct way to get it	2344	* can see a direct way to get it
2369	* Modified to be map tile aware -.MSW	2345	* Modified to be map tile aware -.MSW
2370	*/	2346	*/
2371		2347	int
2372
2373	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2348	can_see_monsterP (maptile *m, int x, int y, int dir)
		2349	{
2374	sint16 dx, dy;	2350	sint16 dx, dy;
2375	int mflags;	2351	int mflags;
2376		2352
		2353	if (dir < 0)
2377	if(dir<0) return 0; /* exit condition: invalid direction */	2354	return 0; /* exit condition: invalid direction */
2378		2355
2379	dx = x + freearr_x[dir];	2356	dx = x + DIRX (dir);
2380	dy = y + freearr_y[dir];	2357	dy = y + DIRY (dir);
2381		2358
2382	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2359	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2383		2360
2384	/* This functional arguably was incorrect before - it was	2361	/* This functional arguably was incorrect before - it was
2385	* checking for P_WALL - that was basically seeing if	2362	* checking for P_WALL - that was basically seeing if
2386	* we could move to the monster - this is being more	2363	* we could move to the monster - this is being more
2387	* literal on if we can see it. To know if we can actually	2364	* literal on if we can see it. To know if we can actually
2388	* move to the monster, we'd need the monster passed in or	2365	* move to the monster, we'd need the monster passed in or
2389	* at least its move type.	2366	* at least its move type.
2390	*/	2367	*/
2391	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2368	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2369	return 0;
2392		2370
2393	/* yes, can see. */	2371	/* yes, can see. */
2394	if(dir < 9) return 1;	2372	if (dir < 9)
		2373	return 1;
		2374
2395	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2375	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2396	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2376	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2397	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2377	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2398	}	2378	}
2399		2379
2400
2401
2402	/*	2380	/*
2403	* can_pick(picker, item): finds out if an object is possible to be	2381	* can_pick(picker, item): finds out if an object is possible to be
2404	* picked up by the picker. Returnes 1 if it can be	2382	* picked up by the picker. Returnes 1 if it can be
2405	* picked up, otherwise 0.	2383	* picked up, otherwise 0.
2406	*	2384	*
2407	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2385	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2408	* core dumps if they do.	2386	* core dumps if they do.
2409	*	2387	*
2410	* Add a check so we can't pick up invisible objects (0.93.8)	2388	* Add a check so we can't pick up invisible objects (0.93.8)
2411	*/	2389	*/
2412		2390	int
2413	int can_pick(const object *who, const object *item) {	2391	can_pick (const object *who, const object *item)
2414	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2392	{
2415	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2393	return /*who->flag [FLAG_WIZ]|| */
2416	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2394	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2417	(who->type==PLAYER||item->weight<who->weight/3));	2395	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2418	}	2396	}
2419		2397
		2398	//-GPL
2420		2399
2421	/*	2400	/*
2422	* create clone from object to another	2401	* create clone from object to another
2423	*/	2402	*/
2424	object *object_create_clone (object *asrc) {	2403	object *
2425	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2404	object::deep_clone ()
		2405	{
		2406	assert (("deep_clone called on non-head object", is_head ()));
2426		2407
2427	if(!asrc) return NULL;	2408	object *dst = clone ();
2428	src = asrc;
2429	if(src->head)
2430	src = src->head;
2431		2409
2432	prev = NULL;	2410	object *prev = dst;
2433	for(part = src; part; part = part->more) {	2411	for (object *part = this->more; part; part = part->more)
2434	tmp = get_object();	2412	{
2435	copy_object(part,tmp);	2413	object *tmp = part->clone ();
2436	tmp->x -= src->x;
2437	tmp->y -= src->y;
2438	if(!part->head) {
2439	dst = tmp;
2440	tmp->head = NULL;
2441	} else {
2442	tmp->head = dst;	2414	tmp->head = dst;
2443	}
2444	tmp->more = NULL;
2445	if(prev)
2446	prev->more = tmp;	2415	prev->more = tmp;
2447	prev = tmp;	2416	prev = tmp;
2448	}	2417	}
2449	/*** copy inventory ***/	2418
2450	for(item = src->inv; item; item = item->below) {	2419	for (object *item = inv; item; item = item->below)
2451	(void) insert_ob_in_ob(object_create_clone(item),dst);	2420	insert_ob_in_ob (item->deep_clone (), dst);
2452	}
2453		2421
2454	return dst;	2422	return dst;
2455	}
2456
2457	/* return true if the object was destroyed, 0 otherwise */
2458	int was_destroyed (const object *op, tag_t old_tag)
2459	{
2460	/* checking for FLAG_FREED isn't necessary, but makes this function more
2461	* robust */
2462	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2463	}
2464
2465	/* GROS - Creates an object using a string representing its content. */
2466	/* Basically, we save the content of the string to a temp file, then call */
2467	/* load_object on it. I admit it is a highly inefficient way to make things, */
2468	/* but it was simple to make and allows reusing the load_object function. */
2469	/* Remember not to use load_object_str in a time-critical situation. */
2470	/* Also remember that multiparts objects are not supported for now. */
2471
2472	object* load_object_str(const char *obstr)
2473	{
2474	object *op;
2475	char filename[MAX_BUF];
2476	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2477
2478	FILE *tempfile=fopen(filename,"w");
2479	if (tempfile == NULL)
2480	{
2481	LOG(llevError,"Error - Unable to access load object temp file\n");
2482	return NULL;
2483	};
2484	fprintf(tempfile,obstr);
2485	fclose(tempfile);
2486
2487	op=get_object();
2488
2489	object_thawer thawer (filename);
2490	if (thawer)
2491	load_object(thawer,op,LO_NEWFILE,0);
2492	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2493	CLEAR_FLAG(op,FLAG_REMOVED);
2494
2495	return op;
2496	}	2423	}
2497		2424
2498	/* This returns the first object in who's inventory that	2425	/* This returns the first object in who's inventory that
2499	* has the same type and subtype match.	2426	* has the same type and subtype match.
2500	* returns NULL if no match.	2427	* returns NULL if no match.
2501	*/	2428	*/
		2429	object *
2502	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2430	find_obj_by_type_subtype (const object *who, int type, int subtype)
2503	{	2431	{
2504	object *tmp;
2505
2506	for (tmp=who->inv; tmp; tmp=tmp->below)	2432	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2507	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2433	if (tmp->type == type && tmp->subtype == subtype)
		2434	return tmp;
2508		2435
2509	return NULL;	2436	return 0;
2510	}	2437	}
2511		2438
2512	/* If ob has a field named key, return the link from the list,	2439	/* Zero the key_values on op, decrementing the shared-string
2513	* otherwise return NULL.	2440	* refcounts and freeing the links.
2514	*	2441	*/
2515	* key must be a passed in shared string - otherwise, this won't	2442	void
2516	* do the desired thing.	2443	key_values::clear ()
2517	*/	2444	{
2518	key_value * get_ob_key_link(const object * ob, const char * key) {	2445	for (key_value *kvp = first; kvp; )
2519	key_value * link;
2520		2446	{
2521	for (link = ob->key_values; link != NULL; link = link->next) {	2447	key_value *next = kvp->next;
		2448	delete kvp;
		2449	kvp = next;
		2450	}
		2451
		2452	first = 0;
		2453	}
		2454
		2455	shstr_tmp
		2456	key_values::get (shstr_tmp key) const
		2457	{
		2458	for (key_value *kv = first; kv; kv = kv->next)
2522	if (link->key == key) {	2459	if (kv->key == key)
		2460	return kv->value;
		2461
		2462	return shstr ();
		2463	}
		2464
		2465	void
		2466	key_values::add (shstr_tmp key, shstr_tmp value)
		2467	{
		2468	key_value *kv = new key_value;
		2469
		2470	kv->next = first;
		2471	kv->key = key;
		2472	kv->value = value;
		2473
		2474	first = kv;
		2475	}
		2476
		2477	void
		2478	key_values::set (shstr_tmp key, shstr_tmp value)
		2479	{
		2480	for (key_value *kv = first; kv; kv = kv->next)
		2481	if (kv->key == key)
		2482	{
		2483	kv->value = value;
2523	return link;	2484	return;
		2485	}
		2486
		2487	add (key, value);
		2488	}
		2489
		2490	void
		2491	key_values::del (shstr_tmp key)
		2492	{
		2493	for (key_value **kvp = &first; *kvp; kvp = &(*kvp)->next)
		2494	if ((*kvp)->key == key)
		2495	{
		2496	key_value *kv = *kvp;
		2497	*kvp = (*kvp)->next;
		2498	delete kv;
		2499	return;
		2500	}
		2501	}
		2502
		2503	void
		2504	key_values::reverse ()
		2505	{
		2506	key_value *prev = 0;
		2507	key_value *head = first;
		2508
		2509	while (head)
		2510	{
		2511	key_value *node = head;
		2512	head = head->next;
		2513	node->next = prev;
		2514	prev = node;
		2515	}
		2516
		2517	first = prev;
		2518	}
		2519
		2520	key_values &
		2521	key_values::operator =(const key_values &kv)
		2522	{
		2523	clear ();
		2524
		2525	for (key_value *kvp = kv.first; kvp; kvp = kvp->next)
		2526	add (kvp->key, kvp->value);
		2527
		2528	reverse ();
		2529	}
		2530
		2531	object::depth_iterator::depth_iterator (object *container)
		2532	: iterator_base (container)
		2533	{
		2534	while (item->inv)
		2535	item = item->inv;
		2536	}
		2537
		2538	void
		2539	object::depth_iterator::next ()
		2540	{
		2541	if (item->below)
		2542	{
		2543	item = item->below;
		2544
		2545	while (item->inv)
		2546	item = item->inv;
		2547	}
		2548	else
		2549	item = item->env;
		2550	}
		2551
		2552	const char *
		2553	object::flag_desc (char *desc, int len) const
		2554	{
		2555	char *p = desc;
		2556	bool first = true;
		2557
		2558	*p = 0;
		2559
		2560	for (int i = 0; i < NUM_FLAGS; i++)
		2561	{
		2562	if (len <= 10) // magic constant!
		2563	{
		2564	snprintf (p, len, ",...");
		2565	break;
2524	}	2566	}
2525	}
2526
2527	return NULL;
2528	}
2529		2567
2530	/*	2568	if (flag [i])
2531	* Returns the value of op has an extra_field for key, or NULL.
2532	*
2533	* The argument doesn't need to be a shared string.
2534	*
2535	* The returned string is shared.
2536	*/
2537	const char * get_ob_key_value(const object * op, const char * const key) {
2538	key_value * link;
2539	const char * canonical_key;
2540
2541	canonical_key = shstr::find (key);
2542
2543	if (canonical_key == NULL) {
2544	/* 1. There being a field named key on any object
2545	* implies there'd be a shared string to find.
2546	* 2. Since there isn't, no object has this field.
2547	* 3. Therefore, *this* object doesn't have this field.
2548	*/	2569	{
2549	return NULL;	2570	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2550	}	2571	len -= cnt;
2551		2572	p += cnt;
2552	/* This is copied from get_ob_key_link() above -	2573	first = false;
2553	* only 4 lines, and saves the function call overhead.
2554	*/
2555	for (link = op->key_values; link != NULL; link = link->next) {
2556	if (link->key == canonical_key) {
2557	return link->value;
2558	}	2574	}
2559	}	2575	}
		2576
		2577	return desc;
		2578	}
		2579
		2580	// return a suitable string describing an object in enough detail to find it
		2581	const char *
		2582	object::debug_desc (char *info) const
		2583	{
		2584	char flagdesc[512];
		2585	char info2[256 * 4];
		2586	char *p = info;
		2587
		2588	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2589	count,
		2590	uuid.c_str (),
		2591	&name,
		2592	title ? ",title:\"" : "",
		2593	title ? (const char *)title : "",
		2594	title ? "\"" : "",
		2595	flag_desc (flagdesc, 512), type);
		2596
		2597	if (!flag[FLAG_REMOVED] && env)
		2598	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2599
		2600	if (map)
		2601	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2602
		2603	return info;
		2604	}
		2605
		2606	const char *
		2607	object::debug_desc () const
		2608	{
		2609	static char info[3][256 * 4];
		2610	static int info_idx;
		2611
		2612	return debug_desc (info [++info_idx % 3]);
		2613	}
		2614
		2615	struct region *
		2616	object::region () const
		2617	{
		2618	return map ? map->region (x, y)
		2619	: region::default_region ();
		2620	}
		2621
		2622	//+GPL
		2623
		2624	void
		2625	object::open_container (object *new_container)
		2626	{
		2627	if (container == new_container)
2560	return NULL;	2628	return;
2561	}
2562		2629
		2630	object *old_container = container;
2563		2631
2564	/*	2632	if (old_container)
2565	* Updates the canonical_key in op to value.
2566	*
2567	* canonical_key is a shared string (value doesn't have to be).
2568	*
2569	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2570	* keys.
2571	*
2572	* Returns TRUE on success.
2573	*/
2574	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {
2575	key_value * field = NULL, *last=NULL;
2576		2633	{
2577	for (field=op->key_values; field != NULL; field=field->next) {	2634	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2578	if (field->key != canonical_key) {	2635	return;
2579	last = field;	2636
2580	continue;	2637	#if 0
		2638	// remove the "Close old_container" object.
		2639	if (object *closer = old_container->inv)
		2640	if (closer->type == CLOSE_CON)
		2641	closer->destroy ();
		2642	#endif
		2643
		2644	// make sure the container is available
		2645	esrv_send_item (this, old_container);
		2646
		2647	old_container->flag [FLAG_APPLIED] = false;
		2648	container = 0;
		2649
		2650	// client needs item update to make it work, client bug requires this to be separate
		2651	esrv_update_item (UPD_FLAGS, this, old_container);
		2652
		2653	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2654	play_sound (sound_find ("chest_close"));
		2655	}
		2656
		2657	if (new_container)
		2658	{
		2659	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2660	return;
		2661
		2662	// TODO: this does not seem to serve any purpose anymore?
		2663	#if 0
		2664	// insert the "Close Container" object.
		2665	if (archetype *closer = new_container->other_arch)
		2666	{
		2667	object *closer = new_container->other_arch->instance ();
		2668	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2669	new_container->insert (closer);
2581	}	2670	}
		2671	#endif
		2672
		2673	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2674
		2675	// make sure the container is available, client bug requires this to be separate
		2676	esrv_send_item (this, new_container);
		2677
		2678	new_container->flag [FLAG_APPLIED] = true;
		2679	container = new_container;
		2680
		2681	// client needs flag change
		2682	esrv_update_item (UPD_FLAGS, this, new_container);
		2683	esrv_send_inventory (this, new_container);
		2684	play_sound (sound_find ("chest_open"));
2582		2685	}
2583	if (value)	2686	// else if (!old_container->env && contr && contr->ns)
2584	field->value = value;	2687	// contr->ns->floorbox_reset ();
2585	else {	2688	}
2586	/* Basically, if the archetype has this key set,
2587	* we need to store the null value so when we save
2588	* it, we save the empty value so that when we load,
2589	* we get this value back again.
2590	*/
2591	if (get_ob_key_link (&op->arch->clone, canonical_key))
2592	field->value = 0;
2593	else
2594	{
2595	if (last) last->next = field->next;
2596	else op->key_values = field->next;
2597		2689
2598	delete field;	2690	//-GPL
2599	}
2600	}
2601	return TRUE;
2602	}
2603	/* IF we get here, key doesn't exist */
2604		2691
2605	/* No field, we'll have to add it. */	2692	// prefetch some flat area around the player
		2693	static void
		2694	prefetch_surrounding_area (object *op, maptile *map, int range)
		2695	{
		2696	for (maprect *rect = map->split_to_tiles (mapwalk_buf,
		2697	op->x - range , op->y - range ,
		2698	op->x + range + 1, op->y + range + 1);
		2699	rect->m;
		2700	++rect)
2606		2701	{
2607	if (!add_key) {	2702	rect->m->touch ();
2608	return FALSE;	2703	rect->m->activate ();
2609	}
2610	/* There isn't any good reason to store a null
2611	* value in the key/value list. If the archetype has
2612	* this key, then we should also have it, so shouldn't
2613	* be here. If user wants to store empty strings,
2614	* should pass in ""
2615	*/
2616	if (value == NULL) return TRUE;
2617		2704	}
2618	field = new key_value;	2705	}
		2706
		2707	// prefetch a generous area around the player, also up and down
		2708	void
		2709	object::prefetch_surrounding_maps ()
		2710	{
		2711	prefetch_surrounding_area (this, map, 40);
		2712
		2713	if (maptile *m = map->tile_available (TILE_DOWN))
		2714	prefetch_surrounding_area (this, m, 20);
		2715
		2716	if (maptile *m = map->tile_available (TILE_UP))
		2717	prefetch_surrounding_area (this, m, 20);
		2718	}
		2719
		2720	//+GPL
		2721
		2722	object *
		2723	object::force_find (shstr_tmp name)
		2724	{
		2725	/* cycle through his inventory to look for the MARK we want to
		2726	* place
		2727	*/
		2728	for (object *tmp = inv; tmp; tmp = tmp->below)
		2729	if (tmp->type == FORCE && tmp->slaying == name)
		2730	return splay (tmp);
		2731
		2732	return 0;
		2733	}
		2734
		2735	void
		2736	object::force_set_timer (int duration)
		2737	{
		2738	this->duration = 1;
		2739	this->speed_left = -1.f;
		2740
		2741	this->set_speed (duration ? 1.f / duration : 0.f);
		2742	}
		2743
		2744	object *
		2745	object::force_add (shstr_tmp name, int duration)
		2746	{
		2747	if (object *force = force_find (name))
		2748	force->destroy ();
		2749
		2750	object *force = archetype::get (FORCE_NAME);
		2751
		2752	force->slaying = name;
		2753	force->force_set_timer (duration);
		2754	force->flag [FLAG_APPLIED] = true;
		2755
		2756	return insert (force);
		2757	}
		2758
		2759	void
		2760	object::play_sound (faceidx sound) const
		2761	{
		2762	if (!sound)
		2763	return;
		2764
		2765	if (is_on_map ())
		2766	map->play_sound (sound, x, y);
		2767	else if (object *pl = in_player ())
		2768	pl->contr->play_sound (sound);
		2769	}
		2770
		2771	void
		2772	object::say_msg (const char *msg) const
		2773	{
		2774	if (is_on_map ())
		2775	map->say_msg (msg, x, y);
		2776	else if (object *pl = in_player ())
		2777	pl->contr->play_sound (sound);
		2778	}
		2779
		2780	void
		2781	object::make_noise ()
		2782	{
		2783	// we do not model noise in the map, so instead put
		2784	// a temporary light into the noise source
		2785	// could use the map instead, but that's less reliable for our
		2786	// goal, which is to make invisibility a bit harder to exploit
		2787
		2788	// currently only works sensibly for players
		2789	if (!is_player ())
		2790	return;
		2791
		2792	// find old force, or create new one
		2793	object *force = force_find (shstr_noise_force);
		2794
		2795	if (force)
		2796	force->speed_left = -1.f; // patch old speed up
		2797	else
2619		2798	{
2620	field->key = canonical_key;	2799	force = archetype::get (shstr_noise_force);
2621	field->value = value;	2800
2622	/* Usual prepend-addition. */	2801	force->slaying = shstr_noise_force;
2623	field->next = op->key_values;	2802	force->stats.food = 1;
2624	op->key_values = field;	2803	force->speed_left = -1.f;
		2804
		2805	force->set_speed (1.f / 4.f);
		2806	force->flag [FLAG_IS_USED_UP] = true;
		2807	force->flag [FLAG_APPLIED] = true;
		2808
		2809	insert (force);
2625		2810	}
		2811	}
		2812
		2813	void object::change_move_type (MoveType mt)
		2814	{
		2815	if (move_type == mt)
		2816	return;
		2817
		2818	if (is_on_map ())
		2819	{
		2820	// we are on the map, so handle move_on/off effects
		2821	remove ();
		2822	move_type = mt;
		2823	map->insert (this, x, y, this);
		2824	}
		2825	else
		2826	move_type = mt;
		2827	}
		2828
		2829	/* object should be a player.
		2830	* we return the object the player has marked with the 'mark' command
		2831	* below. If no match is found (or object has changed), we return
		2832	* NULL. We leave it up to the calling function to print messages if
		2833	* nothing is found.
		2834	*/
		2835	object *
		2836	object::mark () const
		2837	{
		2838	if (contr && contr->mark && contr->mark->env == this)
		2839	return contr->mark;
		2840	else
2626	return TRUE;	2841	return 0;
2627	}	2842	}
2628		2843
2629	/*	2844	// put marked object first in the inventory
2630	* Updates the key in op to value.	2845	// this is used by identify-like spells so players can influence
2631	*	2846	// the order a bit.
2632	* If add_key is FALSE, this will only update existing keys,	2847	void
2633	* and not add new ones.	2848	object::splay_marked ()
2634	* In general, should be little reason FALSE is ever passed in for add_key
2635	*
2636	* Returns TRUE on success.
2637	*/
2638	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)
2639	{	2849	{
2640	shstr key_ (key);	2850	if (object *marked = mark ())
2641	return set_ob_key_value_s (op, key_, value, add_key);	2851	splay (marked);
2642	}	2852	}
		2853

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