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Comparing deliantra/server/common/object.C (file contents):
Revision 1.20 by root, Fri Sep 8 18:26:22 2006 UTC vs.
Revision 1.300 by root, Mon Nov 9 03:08:23 2009 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 1.20 2006/09/08 18:26:22 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
13	it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
14	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
15	(at your option) any later version.	11	* option) any later version.
16		12	*
17	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the Affero GNU General Public License
23	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
25		21	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	* The authors can be reached via e-mail to <support@deliantra.net>
27	*/	23	*/
28		24
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	25	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	26	#include <stdio.h>
35	#include <sys/types.h>	27	#include <sys/types.h>
36	#include <sys/uio.h>	28	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	29	#include <object.h>
39	#include <funcpoint.h>	30	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>	31	#include <loader.h>
42	int nrofallocobjects = 0;
43		32
44	object *objects; /* Pointer to the list of used objects */	33	#include <bitset>
45	object *active_objects; /* List of active objects that need to be processed */
46		34
		35	UUID UUID::cur;
		36	static uint64_t seq_next_save;
		37	static const uint64 UUID_GAP = 1<<19;
		38	uint32_t mapspace::smellcount = 10000;
		39
		40	objectvec objects;
		41	activevec actives;
		42
		43	//+GPL
		44
47	short freearr_x[SIZEOFFREE]=	45	short freearr_x[SIZEOFFREE] = {
48	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,	46	0,
		47	0, 1, 1, 1, 0, -1, -1, -1,
		48	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	49	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		50	};
50	short freearr_y[SIZEOFFREE]=	51	short freearr_y[SIZEOFFREE] = {
51	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	52	0,
		53	-1, -1, 0, 1, 1, 1, 0, -1,
		54	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
52	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	55	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	int maxfree[SIZEOFFREE]=	56	};
54	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};
56	int freedir[SIZEOFFREE]= {	57	int freedir[SIZEOFFREE] = {
57	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	58	0,
58	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	59	1, 2, 3, 4, 5, 6, 7, 8,
		60	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		61	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		62	};
59		63
		64	static int maxfree[SIZEOFFREE] = {
		65	0,
		66	9, 10, 13, 14, 17, 18, 21, 22,
		67	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		68	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		69	};
		70
		71	static void
		72	write_uuid (uval64 skip, bool sync)
		73	{
		74	CALL_BEGIN (2);
		75	CALL_ARG_SV (newSVval64 (skip));
		76	CALL_ARG_SV (boolSV (sync));
		77	CALL_CALL ("cf::write_uuid", G_DISCARD);
		78	CALL_END;
		79	}
		80
		81	static void
		82	read_uuid (void)
		83	{
		84	char filename[MAX_BUF];
		85
		86	sprintf (filename, "%s/uuid", settings.localdir);
		87
		88	seq_next_save = 0;
		89
		90	FILE *fp;
		91
		92	if (!(fp = fopen (filename, "r")))
		93	{
		94	if (errno == ENOENT)
		95	{
		96	LOG (llevInfo, "RESET uid to 1\n");
		97	UUID::cur.seq = 0;
		98	write_uuid (UUID_GAP, true);
		99	return;
		100	}
		101
		102	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		103	_exit (1);
		104	}
		105
		106	char buf [UUID::MAX_LEN];
		107	buf[0] = 0;
		108	fgets (buf, sizeof (buf), fp);
		109
		110	if (!UUID::cur.parse (buf))
		111	{
		112	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		113	_exit (1);
		114	}
		115
		116	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		117
		118	write_uuid (UUID_GAP, true);
		119	fclose (fp);
		120	}
		121
		122	UUID
		123	UUID::gen ()
		124	{
		125	UUID uid;
		126
		127	uid.seq = ++cur.seq;
		128
		129	if (expect_false (cur.seq >= seq_next_save))
		130	{
		131	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		132	write_uuid (UUID_GAP, false);
		133	}
		134
		135
		136	return uid;
		137	}
		138
		139	void
		140	UUID::init ()
		141	{
		142	read_uuid ();
		143	}
		144
		145	bool
		146	UUID::parse (const char *s)
		147	{
		148	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		149	return false;
		150
		151	seq = 0;
		152
		153	while (*s != '>')
		154	{
		155	if (*s < '0')
		156	return false;
		157
		158	// this gives nice branchless code with gcc
		159	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		160	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		161
		162	seq = (seq << 4) | digit;
		163
		164	++s;
		165	}
		166
		167	return true;
		168	}
		169
		170	char *
		171	UUID::append (char *buf) const
		172	{
		173	*buf++ = '<';
		174	*buf++ = '1';
		175	*buf++ = '.';
		176
		177	uint64_t seq = this->seq;
		178	const int bits = 64;
		179	char nz = 0;
		180	static const char tohex [] = "0123456789abcdef";
		181
		182	// assert (len >= 3 + bits / 4 + 1 + 1);
		183	for (int i = bits / 4; --i; )
		184	{
		185	uint8_t digit = seq >> (bits - 4);
		186
		187	*buf = tohex [digit];
		188	nz |= digit;
		189	buf += nz ? 1 : 0;
		190	seq <<= 4;
		191	}
		192
		193	// last digit is special - always emit
		194	uint8_t digit = seq >> (bits - 4);
		195	*buf++ = tohex [digit];
		196
		197	*buf++ = '>';
		198
		199	return buf;
		200	}
		201
		202	char *
		203	UUID::c_str () const
		204	{
		205	static char buf [MAX_LEN];
		206	*append (buf) = 0;
		207	return buf;
		208	}
60		209
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	210	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		211	static bool
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	212	compare_ob_value_lists_one (const object *wants, const object *has)
63	key_value * wants_field;	213	{
64
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	214	/* n-squared behaviour (see kv_get), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	215	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	216	* different structure or at least keep the lists sorted...
68	*/	217	*/
69		218
70	/* For each field in wants, */	219	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	220	for (key_value *kv = wants->key_values; kv; kv = kv->next)
72	key_value * has_field;	221	if (has->kv_get (kv->key) != kv->value)
73		222	return false;
74	/* Look for a field in has with the same key. */	223
75	has_field = get_ob_key_link(has, wants_field->key);
76
77	if (has_field == NULL) {
78	/* No field with that name. */
79	return FALSE;
80	}
81
82	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {
84	/* Values don't match, so this half of the comparison is false. */
85	return FALSE;
86	}
87
88	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90
91	/* If we get here, every field in wants has a matching field in has. */	224	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	225	return true;
93	}	226	}
94		227
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	228	/* Returns TRUE if ob1 has the same key_values as ob2. */
		229	static bool
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	230	compare_ob_value_lists (const object *ob1, const object *ob2)
		231	{
97	/* However, there may be fields in has which aren't partnered in wants,	232	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	233	* so we need to run the comparison *twice*. :(
99	*/	234	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	235	return compare_ob_value_lists_one (ob1, ob2)
		236	&& compare_ob_value_lists_one (ob2, ob1);
101	}	237	}
102		238
103	/* Function examines the 2 objects given to it, and returns true if	239	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	240	* they can be merged together.
105	*	241	*
106	* Note that this function appears a lot longer than the macro it	242	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	243	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	244	* reduce this to the same efficiency.
109	*	245	*
110	* Check nrof variable *before* calling CAN_MERGE()	246	* Check nrof variable *before* calling can_merge()
111	*	247	*
112	* Improvements made with merge: Better checking on potion, and also	248	* Improvements made with merge: Better checking on potion, and also
113	* check weight	249	* check weight
114	*/	250	*/
115
116	bool
117	object::can_merge (object *ob1, object *ob2)	251	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	252	{
119	/* A couple quicksanity checks */	253	/* A couple quicksanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	254	if (ob1 == ob2
		255	|| ob1->type != ob2->type
		256	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED
		257	|| ob1->value != ob2->value
		258	|| ob1->name != ob2->name)
121	return 0;	259	return 0;
122		260
123	if (ob1->speed != ob2->speed)	261	/* Do not merge objects if nrof would overflow, assume nrof
		262	* is always 0 .. 2**31-1 */
		263	if (ob1->nrof > 0x7fffffff - ob2->nrof)
124	return 0;	264	return 0;
125		265
126	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
127	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).
129	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)
131	return 0;
132
133	/* If the objects have been identified, set the BEEN_APPLIED flag.	266	/* If the objects have been identified, set the BEEN_APPLIED flag.
134	* This is to the comparison of the flags below will be OK. We	267	* This is to the comparison of the flags below will be OK. We
135	* just can't ignore the been applied or identified flags, as they	268	* just can't ignore the been applied or identified flags, as they
136	* are not equal - just if it has been identified, the been_applied	269	* are not equal - just if it has been identified, the been_applied
137	* flags lose any meaning.	270	* flags lose any meaning.
138	*/	271	*/
139	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	272	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	273	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		274
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	275	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	276	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		277
145		278	if (ob1->arch->archname != ob2->arch->archname
146	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
147	* being locked in inventory should prevent merging.
148	* 0x4 in flags3 is CLIENT_SENT
149	*/
150	if ((ob1->arch != ob2->arch) ||
151	(ob1->flags[0] != ob2->flags[0]) ||
152	(ob1->flags[1] != ob2->flags[1]) ||
153	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
154	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
155	(ob1->name != ob2->name) ||	279	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	280	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	281	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	282	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||
161	(ob1->attacktype != ob2->attacktype) ||	283	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	284	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	285	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	286	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	287	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	288	|| ob1->animation_id != ob2->animation_id
		289	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependent on each other
167	(ob1->client_type != ob2->client_type) ||	290	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	291	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	292	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	293	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	294	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	295	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	296	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	297	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	298	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	299	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	300	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		301	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		302	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
178	return 0;	303	return 0;
179		304
		305	if ((ob1->flag ^ ob2->flag)
		306	.reset (FLAG_INV_LOCKED)
		307	.reset (FLAG_REMOVED)
		308	.any ())
		309	return 0;
		310
180	/* This is really a spellbook check - really, we should	311	/* This is really a spellbook check - we should in general
181	* check all objects in the inventory.	312	* not merge objects with real inventories, as splitting them
		313	* is hard.
182	*/	314	*/
183	if (ob1->inv || ob2->inv)	315	if (ob1->inv || ob2->inv)
184	{	316	{
185	/* if one object has inventory but the other doesn't, not equiv */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;
188
189	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	317	if (!(ob1->inv && ob2->inv))
191	return 0;	318	return 0; /* inventories differ in length */
		319
		320	if (ob1->inv->below || ob2->inv->below)
		321	return 0; /* more than one object in inv */
		322
		323	if (!object::can_merge (ob1->inv, ob2->inv))
		324	return 0; /* inventory objects differ */
192		325
193	/* inventory ok - still need to check rest of this object to see	326	/* inventory ok - still need to check rest of this object to see
194	* if it is valid.	327	* if it is valid.
195	*/	328	*/
196	}	329	}
…		…
204		337
205	/* Note sure why the following is the case - either the object has to	338	/* Note sure why the following is the case - either the object has to
206	* be animated or have a very low speed. Is this an attempted monster	339	* be animated or have a very low speed. Is this an attempted monster
207	* check?	340	* check?
208	*/	341	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	342	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	343	return 0;
212		344
213	switch (ob1->type)	345	switch (ob1->type)
214	{	346	{
215	case SCROLL:	347	case SCROLL:
216	if (ob1->level != ob2->level)	348	if (ob1->level != ob2->level)
217	return 0;	349	return 0;
218	break;	350	break;
219	}	351	}
220		352
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	353	if (ob1->key_values || ob2->key_values)
222	{	354	{
223	/* At least one of these has key_values. */	355	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	356	if ((!ob1->key_values) != (!ob2->key_values))
225	/* One has fields, but the other one doesn't. */	357	return 0; /* One has fields, but the other one doesn't. */
226	return 0;	358
227	else if (!compare_ob_value_lists (ob1, ob2))	359	if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	360	return 0;
229	}	361	}
230		362
231	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	363	if (ob1->self || ob2->self)
233	{	364	{
234	ob1->optimise ();	365	ob1->optimise ();
235	ob2->optimise ();	366	ob2->optimise ();
236		367
237	if (ob1->self || ob2->self)	368	if (ob1->self || ob2->self)
238	return 0;	369	{
		370	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		371	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		372
		373	if (k1 != k2)
		374	return 0;
		375
		376	if (k1 == 0)
		377	return 1;
		378
		379	if (!cfperl_can_merge (ob1, ob2))
		380	return 0;
		381	}
239	}	382	}
240		383
241	/* Everything passes, must be OK. */	384	/* Everything passes, must be OK. */
242	return 1;	385	return 1;
243	}	386	}
		387
		388	// find player who can see this object
		389	object *
		390	object::visible_to () const
		391	{
		392	if (client_visible () && !flag [FLAG_REMOVED])
		393	{
		394	// see if we are in a container of sorts
		395	if (env)
		396	{
		397	// the player inventory itself is always visible
		398	if (env->is_player ())
		399	return env;
		400
		401	// else a player could have our env open
		402	object *envest = env->outer_env_or_self ();
		403
		404	// the player itself is always on a map, so we will find him here
		405	// even if our inv is in a player.
		406	if (envest->is_on_map ())
		407	if (object *pl = envest->ms ().player ())
		408	if (pl->container_ () == env)
		409	return pl;
		410	}
		411	else
		412	{
		413	// maybe there is a player standing on the same mapspace
		414	// this will catch the case where "this" is a player
		415	if (object *pl = ms ().player ())
		416	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		417	|| pl->container_ () == this)
		418	return pl;
		419	}
		420	}
		421
		422	return 0;
		423	}
		424
		425	// adjust weight per container type ("of holding")
		426	static sint32
		427	weight_adjust_for (object *op, sint32 weight)
		428	{
		429	return op->type == CONTAINER
		430	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		431	: weight;
		432	}
		433
244	/*	434	/*
		435	* adjust_weight(object, weight) adds the specified weight to an object,
		436	* and also updates how much the environment(s) is/are carrying.
		437	*/
		438	static void
		439	adjust_weight (object *op, sint32 weight)
		440	{
		441	while (op)
		442	{
		443	// adjust by actual difference to account for rounding errors
		444	// i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
		445	weight = weight_adjust_for (op, op->carrying)
		446	- weight_adjust_for (op, op->carrying - weight);
		447
		448	if (!weight)
		449	return;
		450
		451	op->carrying += weight;
		452
		453	if (object *pl = op->visible_to ())
		454	if (pl != op) // player is handled lazily
		455	esrv_update_item (UPD_WEIGHT, pl, op);
		456
		457	op = op->env;
		458	}
		459	}
		460
		461	/*
245	* sum_weight() is a recursive function which calculates the weight	462	* this is a recursive function which calculates the weight
246	* an object is carrying. It goes through in figures out how much	463	* an object is carrying. It goes through op and figures out how much
247	* containers are carrying, and sums it up.	464	* containers are carrying, and sums it up.
248	*/	465	*/
249	signed long sum_weight(object *op) {	466	void
250	signed long sum;	467	object::update_weight ()
251	object *inv;	468	{
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	469	sint32 sum = 0;
		470
		471	for (object *op = inv; op; op = op->below)
		472	{
253	if (inv->inv)	473	if (op->inv)
254	sum_weight(inv);	474	op->update_weight ();
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	475
		476	sum += op->total_weight ();
256	}	477	}
257	if (op->type == CONTAINER && op->stats.Str)	478
258	sum = (sum * (100 - op->stats.Str))/100;	479	sum = weight_adjust_for (this, sum);
259	if(op->carrying != sum)	480
		481	if (sum != carrying)
		482	{
260	op->carrying = sum;	483	carrying = sum;
261	return sum;
262	}
263		484
		485	if (object *pl = visible_to ())
		486	if (pl != this) // player is handled lazily
		487	esrv_update_item (UPD_WEIGHT, pl, this);
		488	}
		489	}
		490
264	/**	491	/*
265	* Return the outermost environment object for a given object.	492	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
266	*/	493	*/
267		494	char *
268	object *object_get_env_recursive (object *op) {
269	while (op->env != NULL)
270	op = op->env;
271	return op;
272	}
273
274	/*
275	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
276	* a better check. We basically keeping traversing up until we can't
277	* or find a player.
278	*/
279
280	object *is_player_inv (object *op) {
281	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
282	if (op->env==op)
283	op->env = NULL;
284	return op;
285	}
286
287	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.
290	* The result of the dump is stored in the static global errmsg array.
291	*/
292
293	void dump_object2(object *op) {
294	errmsg[0] = 0;
295	return;
296	//TODO//D#d#
297	#if 0
298	char *cp;
299	/* object *tmp;*/
300
301	if(op->arch!=NULL) {
302	strcat(errmsg,"arch ");
303	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
304	strcat(errmsg,"\n");
305	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	#if 0
308	/* Don't dump player diffs - they are too long, mostly meaningless, and
309	* will overflow the buffer.
310	* Changed so that we don't dump inventory either. This may
311	* also overflow the buffer.
312	*/
313	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	} else {
320	strcat(errmsg,"Object ");
321	if (op->name==NULL) strcat(errmsg, "(null)");
322	else strcat(errmsg,op->name);
323	strcat(errmsg,"\n");
324	#if 0
325	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
326	strcat(errmsg,cp);
327	for (tmp=op->inv; tmp; tmp=tmp->below)
328	dump_object2(tmp);
329	#endif
330	strcat(errmsg,"end\n");
331	}
332	#endif
333	}
334
335	/*
336	* Dumps an object. Returns output in the static global errmsg array.
337	*/
338
339	void dump_object(object *op) {	495	dump_object (object *op)
340	if(op==NULL) {	496	{
341	strcpy(errmsg,"[NULL pointer]");	497	if (!op)
342	return;	498	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		499
348	void dump_all_objects(void) {	500	object_freezer freezer;
349	object *op;	501	op->write (freezer);
350	for(op=objects;op!=NULL;op=op->next) {	502	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	503	}
355		504
356	/*	505	char *
357	* get_nearest_part(multi-object, object 2) returns the part of the	506	object::as_string ()
358	* multi-object 1 which is closest to the second object.	507	{
359	* If it's not a multi-object, it is returned.	508	return dump_object (this);
360	*/
361
362	object *get_nearest_part(object *op, const object *pl) {
363	object *tmp,*closest;
364	int last_dist,i;
365	if(op->more==NULL)
366	return op;
367	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
368	if((i=distance(tmp,pl))<last_dist)
369	closest=tmp,last_dist=i;
370	return closest;
371	}	509	}
372		510
373	/*	511	/*
374	* Returns the object which has the count-variable equal to the argument.	512	* Returns the object which has the count-variable equal to the argument.
		513	* VERRRY slow.
375	*/	514	*/
376		515	object *
377	object *find_object(tag_t i) {	516	find_object (tag_t i)
378	object *op;	517	{
379	for(op=objects;op!=NULL;op=op->next)	518	for_all_objects (op)
380	if(op->count==i)	519	if (op->count == i)
381	break;
382	return op;	520	return op;
		521
		522	return 0;
383	}	523	}
384		524
385	/*	525	/*
386	* Returns the first object which has a name equal to the argument.	526	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	527	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	528	* Enables features like "patch <name-of-other-player> food 999"
389	*/	529	*/
390		530	object *
391	object *find_object_name(const char *str) {	531	find_object_name (const char *str)
392	const char *name = shstr::find (str);	532	{
393	object *op;	533	shstr_cmp str_ (str);
394	for(op=objects;op!=NULL;op=op->next)	534
		535	if (str_)
		536	for_all_objects (op)
395	if(&op->name == name)	537	if (op->name == str_)
396	break;	538	return op;
397		539
398	return op;	540	return 0;
399	}
400
401	void free_all_object_data ()
402	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
404	}
405
406	/*
407	* Returns the object which this object marks as being the owner.
408	* A id-scheme is used to avoid pointing to objects which have been
409	* freed and are now reused. If this is detected, the owner is
410	* set to NULL, and NULL is returned.
411	* Changed 2004-02-12 - if the player is setting at the play again
412	* prompt, he is removed, and we don't want to treat him as an owner of
413	* anything, so check removed flag. I don't expect that this should break
414	* anything - once an object is removed, it is basically dead anyways.
415	*/
416
417	object *get_owner(object *op) {
418	if(op->owner==NULL)
419	return NULL;
420
421	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
422	op->owner->count==op->ownercount)
423	return op->owner;
424
425	op->owner=NULL;
426	op->ownercount=0;
427	return NULL;
428	}
429
430	void clear_owner(object *op)
431	{
432	if (!op) return;
433
434	if (op->owner && op->ownercount == op->owner->count)
435	op->owner->refcount--;
436
437	op->owner = NULL;
438	op->ownercount = 0;
439	}	541	}
440		542
441	/*	543	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	544	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	545	* skill and experience objects.
		546	* ACTUALLY NO! investigate! TODO
444	*/	547	*/
445	void set_owner (object *op, object *owner)	548	void
		549	object::set_owner (object *owner)
446	{	550	{
447	if(owner==NULL||op==NULL)	551	// allow objects which own objects
		552	if (owner)
		553	while (owner->owner)
		554	owner = owner->owner;
		555
		556	if (flag [FLAG_FREED])
		557	{
		558	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
448	return;	559	return;
		560	}
449		561
450	/* next line added to allow objects which own objects */
451	/* Add a check for ownercounts in here, as I got into an endless loop
452	* with the fireball owning a poison cloud which then owned the
453	* fireball. I believe that was caused by one of the objects getting
454	* freed and then another object replacing it. Since the ownercounts
455	* didn't match, this check is valid and I believe that cause is valid.
456	*/
457	while (owner->owner && owner!=owner->owner &&
458	owner->ownercount==owner->owner->count) owner=owner->owner;
459
460	/* IF the owner still has an owner, we did not resolve to a final owner.
461	* so lets not add to that.
462	*/
463	if (owner->owner) return;
464
465	op->owner=owner;	562	this->owner = owner;
466
467	op->ownercount=owner->count;
468	owner->refcount++;
469
470	}	563	}
471		564
472	/* Set the owner to clone's current owner and set the skill and experience	565	int
473	* objects to clone's objects (typically those objects that where the owner's	566	object::slottype () const
474	* current skill and experience objects at the time when clone's owner was
475	* set - not the owner's current skill and experience objects).
476	*
477	* Use this function if player created an object (e.g. fire bullet, swarm
478	* spell), and this object creates further objects whose kills should be
479	* accounted for the player's original skill, even if player has changed
480	* skills meanwhile.
481	*/
482	void copy_owner (object *op, object *clone)
483	{	567	{
484	object *owner = get_owner (clone);	568	if (type == SKILL)
485	if (owner == NULL) {	569	{
486	/* players don't have owners - they own themselves. Update	570	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
487	* as appropriate.	571	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		572	}
		573	else
		574	{
		575	if (slot [body_combat].info) return slot_combat;
		576	if (slot [body_range ].info) return slot_ranged;
		577	}
		578
		579	return slot_none;
		580	}
		581
		582	bool
		583	object::change_weapon (object *ob)
		584	{
		585	if (current_weapon == ob)
		586	return true;
		587
		588	if (chosen_skill)
		589	chosen_skill->flag [FLAG_APPLIED] = false;
		590
		591	current_weapon = ob;
		592	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		593
		594	if (chosen_skill)
		595	chosen_skill->flag [FLAG_APPLIED] = true;
		596
		597	update_stats ();
		598
		599	if (ob)
		600	{
		601	// now check wether any body locations became invalid, in which case
		602	// we cannot apply the weapon at the moment.
		603	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		604	if (slot[i].used < 0)
488	*/	605	{
489	if (clone->type == PLAYER) owner=clone;	606	current_weapon = chosen_skill = 0;
490	else return;	607	update_stats ();
		608
		609	new_draw_info_format (NDI_UNIQUE, 0, this,
		610	"You try to balance all your items at once, "
		611	"but the %s is just too much for your body. "
		612	"[You need to unapply some items first - use the 'body' command to see "
		613	"how many items you cna wera on a specific body part.]", &ob->name);
		614	return false;
		615	}
		616
		617	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		618	}
		619	else
		620	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		621
		622	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
491	}	623	{
492	set_owner(op, owner);	624	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		625	&name, ob->debug_desc ());
		626	return false;
		627	}
493		628
		629	return true;
494	}	630	}
495		631
496	/* Zero the key_values on op, decrementing the shared-string	632	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	633	* refcounts and freeing the links.
498	*/	634	*/
		635	static void
499	static void free_key_values(object * op)	636	free_key_values (object *op)
500	{	637	{
501	for (key_value *i = op->key_values; i != 0; )	638	for (key_value *i = op->key_values; i; )
502	{	639	{
503	key_value *next = i->next;	640	key_value *next = i->next;
504	delete i;	641	delete i;
		642
505	i = next;	643	i = next;
506	}	644	}
507		645
508	op->key_values = 0;	646	op->key_values = 0;
509	}	647	}
510		648
511	void object::clear ()
512	{
513	attachable_base::clear ();
514
515	free_key_values (this);
516
517	name = 0;
518	name_pl = 0;
519	title = 0;
520	race = 0;
521	slaying = 0;
522	skill = 0;
523	msg = 0;
524	lore = 0;
525	custom_name = 0;
526	materialname = 0;
527
528	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
529
530	SET_FLAG (this, FLAG_REMOVED);
531	}
532
533	void object::clone (object *destination)
534	{
535	*(object_copy *)destination = *(object_copy *)this;
536	*(object_pod *)destination = *(object_pod *)this;
537
538	if (self || cb)
539	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
540	}
541
542	/*	649	/*
543	* clear_object() frees everything allocated by an object, and also
544	* clears all variables and flags to default settings.
545	*/
546
547	void clear_object (object *op)
548	{
549	op->clear ();
550
551	op->contr = NULL;
552	op->below = NULL;
553	op->above = NULL;
554	op->inv = NULL;
555	op->container=NULL;
556	op->env=NULL;
557	op->more=NULL;
558	op->head=NULL;
559	op->map=NULL;
560	op->refcount=0;
561	op->active_next = NULL;
562	op->active_prev = NULL;
563	/* What is not cleared is next, prev, and count */
564
565	op->expmul = 1.0;
566	op->face = blank_face;
567	op->attacked_by_count = -1;
568
569	if (settings.casting_time)
570	op->casting_time = -1;
571	}
572
573	/*
574	* copy object first frees everything allocated by the second object,	650	* copy_to first frees everything allocated by the dst object,
575	* and then copies the contends of the first object into the second	651	* and then copies the contents of itself into the second
576	* object, allocating what needs to be allocated. Basically, any	652	* object, allocating what needs to be allocated. Basically, any
577	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	653	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
578	* if the first object is freed, the pointers in the new object	654	* if the first object is freed, the pointers in the new object
579	* will point at garbage.	655	* will point at garbage.
580	*/	656	*/
581		657	void
582	void copy_object (object *op2, object *op)	658	object::copy_to (object *dst)
583	{	659	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	660	dst->remove ();
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	661	*(object_copy *)dst = *this;
586		662	dst->flag [FLAG_REMOVED] = true;
587	op2->clone (op);
588
589	if (is_freed) SET_FLAG (op, FLAG_FREED);
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);
591
592	if (op2->speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
594		663
595	/* Copy over key_values, if any. */	664	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	665	if (key_values)
597	{	666	{
598	key_value *tail = NULL;	667	key_value *tail = 0;
599	key_value *i;
600
601	op->key_values = NULL;	668	dst->key_values = 0;
602		669
603	for (i = op2->key_values; i != NULL; i = i->next)	670	for (key_value *i = key_values; i; i = i->next)
604	{	671	{
605	key_value *new_link = new key_value;	672	key_value *new_link = new key_value;
606		673
607	new_link->next = NULL;	674	new_link->next = 0;
608	new_link->key = i->key;	675	new_link->key = i->key;
609	new_link->value = i->value;	676	new_link->value = i->value;
610		677
611	/* Try and be clever here, too. */	678	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	679	if (!dst->key_values)
613	{	680	{
614	op->key_values = new_link;	681	dst->key_values = new_link;
615	tail = new_link;	682	tail = new_link;
616	}	683	}
617	else	684	else
618	{	685	{
619	tail->next = new_link;	686	tail->next = new_link;
620	tail = new_link;	687	tail = new_link;
621	}	688	}
622	}	689	}
623	}	690	}
624		691
625	update_ob_speed (op);	692	if (speed < 0)
626	}	693	dst->speed_left -= rndm ();
627		694
		695	dst->activate ();
		696	}
		697
		698	void
		699	object::instantiate ()
		700	{
		701	if (!uuid.seq) // HACK
		702	uuid = UUID::gen ();
		703
		704	speed_left = -0.1f;
		705	/* copy the body_info to the body_used - this is only really
		706	* need for monsters, but doesn't hurt to do it for everything.
		707	* by doing so, when a monster is created, it has good starting
		708	* values for the body_used info, so when items are created
		709	* for it, they can be properly equipped.
		710	*/
		711	for (int i = NUM_BODY_LOCATIONS; i--; )
		712	slot[i].used = slot[i].info;
		713
		714	attachable::instantiate ();
		715	}
		716
		717	object *
628	object::object ()	718	object::clone ()
629	{	719	{
630	count = ++ob_count;	720	object *neu = create ();
631		721	copy_to (neu);
632	next = objects;	722	neu->map = map; // not copied by copy_to
633		723	return neu;
634	if (objects)
635	objects->prev = this;
636
637	objects = this;
638
639	SET_FLAG (this, FLAG_REMOVED);
640
641	expmul = 1.0;
642	face = blank_face;
643	attacked_by_count = -1;
644	}
645
646	object::~object ()
647	{
648	}	724	}
649		725
650	/*	726	/*
651	* If an object with the IS_TURNABLE() flag needs to be turned due	727	* If an object with the IS_TURNABLE() flag needs to be turned due
652	* to the closest player being on the other side, this function can	728	* to the closest player being on the other side, this function can
653	* be called to update the face variable, _and_ how it looks on the map.	729	* be called to update the face variable, _and_ how it looks on the map.
654	*/	730	*/
655		731	void
656	void update_turn_face(object *op) {	732	update_turn_face (object *op)
		733	{
657	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	734	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
658	return;	735	return;
		736
659	SET_ANIMATION(op, op->direction);	737	SET_ANIMATION (op, op->direction);
660	update_object(op,UP_OBJ_FACE);	738	update_object (op, UP_OBJ_FACE);
661	}	739	}
662		740
663	/*	741	/*
664	* Updates the speed of an object. If the speed changes from 0 to another	742	* Updates the speed of an object. If the speed changes from 0 to another
665	* value, or vice versa, then add/remove the object from the active list.	743	* value, or vice versa, then add/remove the object from the active list.
666	* This function needs to be called whenever the speed of an object changes.	744	* This function needs to be called whenever the speed of an object changes.
667	*/	745	*/
		746	void
		747	object::set_speed (float speed)
		748	{
		749	this->speed = speed;
668		750
669	void update_ob_speed(object *op) {	751	if (has_active_speed ())
670	extern int arch_init;	752	activate ();
671
672	/* No reason putting the archetypes objects on the speed list,
673	* since they never really need to be updated.
674	*/
675
676	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
677	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);
678	#ifdef MANY_CORES
679	abort();
680	#else
681	op->speed = 0;
682	#endif
683	}
684	if (arch_init) {
685	return;
686	}
687	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
688	/* If already on active list, don't do anything */
689	if (op->active_next || op->active_prev || op==active_objects)
690	return;
691
692	/* process_events() expects us to insert the object at the beginning
693	* of the list. */
694	op->active_next = active_objects;
695	if (op->active_next!=NULL)
696	op->active_next->active_prev = op;
697	active_objects = op;
698	}
699	else {	753	else
700	/* If not on the active list, nothing needs to be done */	754	deactivate ();
701	if (!op->active_next && !op->active_prev && op!=active_objects)
702	return;
703
704	if (op->active_prev==NULL) {
705	active_objects = op->active_next;
706	if (op->active_next!=NULL)
707	op->active_next->active_prev = NULL;
708	}
709	else {
710	op->active_prev->active_next = op->active_next;
711	if (op->active_next)
712	op->active_next->active_prev = op->active_prev;
713	}
714	op->active_next = NULL;
715	op->active_prev = NULL;
716	}
717	}	755	}
718		756
719	/* This function removes object 'op' from the list of active
720	* objects.
721	* This should only be used for style maps or other such
722	* reference maps where you don't want an object that isn't
723	* in play chewing up cpu time getting processed.
724	* The reverse of this is to call update_ob_speed, which
725	* will do the right thing based on the speed of the object.
726	*/
727	void remove_from_active_list(object *op)
728	{
729	/* If not on the active list, nothing needs to be done */
730	if (!op->active_next && !op->active_prev && op!=active_objects)
731	return;
732
733	if (op->active_prev==NULL) {
734	active_objects = op->active_next;
735	if (op->active_next!=NULL)
736	op->active_next->active_prev = NULL;
737	}
738	else {
739	op->active_prev->active_next = op->active_next;
740	if (op->active_next)
741	op->active_next->active_prev = op->active_prev;
742	}
743	op->active_next = NULL;
744	op->active_prev = NULL;
745	}
746
747	/*	757	/*
748	* update_object() updates the array which represents the map.	758	* update_object() updates the the map.
749	* It takes into account invisible objects (and represent squares covered	759	* It takes into account invisible objects (and represent squares covered
750	* by invisible objects by whatever is below them (unless it's another	760	* by invisible objects by whatever is below them (unless it's another
751	* invisible object, etc...)	761	* invisible object, etc...)
752	* If the object being updated is beneath a player, the look-window	762	* If the object being updated is beneath a player, the look-window
753	* of that player is updated (this might be a suboptimal way of	763	* of that player is updated (this might be a suboptimal way of
754	* updating that window, though, since update_object() is called _often_)	764	* updating that window, though, since update_object() is called _often_)
755	*	765	*
756	* action is a hint of what the caller believes need to be done.	766	* action is a hint of what the caller believes need to be done.
757	* For example, if the only thing that has changed is the face (due to
758	* an animation), we don't need to call update_position until that actually
759	* comes into view of a player. OTOH, many other things, like addition/removal
760	* of walls or living creatures may need us to update the flags now.
761	* current action are:	767	* current action are:
762	* UP_OBJ_INSERT: op was inserted	768	* UP_OBJ_INSERT: op was inserted
763	* UP_OBJ_REMOVE: op was removed	769	* UP_OBJ_REMOVE: op was removed
764	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	770	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
765	* as that is easier than trying to look at what may have changed.	771	* as that is easier than trying to look at what may have changed.
766	* UP_OBJ_FACE: only the objects face has changed.	772	* UP_OBJ_FACE: only the objects face has changed.
767	*/	773	*/
768		774	void
769	void update_object(object *op, int action) {	775	update_object (object *op, int action)
770	int update_now=0, flags;	776	{
771	MoveType move_on, move_off, move_block, move_slow;	777	if (!op)
772		778	{
773	if (op == NULL) {
774	/* this should never happen */	779	/* this should never happen */
775	LOG(llevDebug,"update_object() called for NULL object.\n");	780	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
776	return;	781	return;
777	}
778		782	}
779	if(op->env!=NULL) {	783
		784	if (!op->is_on_map ())
		785	{
780	/* Animation is currently handled by client, so nothing	786	/* Animation is currently handled by client, so nothing
781	* to do in this case.	787	* to do in this case.
782	*/	788	*/
783	return;	789	return;
784	}
785
786	/* If the map is saving, don't do anything as everything is
787	* going to get freed anyways.
788	*/
789	if (!op->map || op->map->in_memory == MAP_SAVING) return;
790		790	}
		791
791	/* make sure the object is within map boundaries */	792	/* make sure the object is within map boundaries */
792	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	793	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
793	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	794	{
794	LOG(llevError,"update_object() called for object out of map!\n");	795	LOG (llevError, "update_object() called for object out of map!\n");
795	#ifdef MANY_CORES	796	#ifdef MANY_CORES
796	abort();	797	abort ();
797	#endif	798	#endif
798	return;	799	return;
799	}
800		800	}
801	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
802	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
803	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
804	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
805	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
806	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
807		801
		802	mapspace &m = op->ms ();
		803
		804	if (!(m.flags_ & P_UPTODATE))
		805	/* nop */;
808	if (action == UP_OBJ_INSERT) {	806	else if (action == UP_OBJ_INSERT)
		807	{
		808	#if 0
		809	// this is likely overkill, TODO: revisit (schmorp)
809	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	810	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
810	update_now=1;
811
812	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	811	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
813	update_now=1;	812	|| (op->is_player () && !(m.flags_ & P_PLAYER))
814		813	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		814	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
815	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	815	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
816	update_now=1;	816	|| (m.move_on | op->move_on ) != m.move_on
817
818	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
819	update_now=1;
820
821	if (op->type == SAFE_GROUND && !(flags & P_SAFE))
822	update_now=1;
823
824	if ((move_on | op->move_on) != move_on) update_now=1;
825
826	if ((move_off | op->move_off) != move_off) update_now=1;	817	|| (m.move_off | op->move_off ) != m.move_off
827		818	|| (m.move_slow | op->move_slow) != m.move_slow
828	/* This isn't perfect, but I don't expect a lot of objects to	819	/* This isn't perfect, but I don't expect a lot of objects to
829	* to have move_allow right now.	820	* have move_allow right now.
830	*/	821	*/
831	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	822	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
832	update_now=1;	823	m.invalidate ();
833		824	#else
834	if ((move_slow | op->move_slow) != move_slow)	825	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
835	update_now=1;	826	m.invalidate ();
		827	#endif
836	}	828	}
837	/* if the object is being removed, we can't make intelligent	829	/* if the object is being removed, we can't make intelligent
838	* decisions, because remove_ob can't really pass the object	830	* decisions, because remove_ob can't really pass the object
839	* that is being removed.	831	* that is being removed.
840	*/	832	*/
841	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	833	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
842	update_now=1;	834	m.invalidate ();
843	} else if (action == UP_OBJ_FACE) {	835	else if (action == UP_OBJ_FACE)
844	/* Nothing to do for that case */	836	/* Nothing to do for that case */ ;
845	}
846	else {	837	else
847	LOG(llevError,"update_object called with invalid action: %d\n", action);	838	LOG (llevError, "update_object called with invalid action: %d\n", action);
848	}
849		839
850	if (update_now) {
851	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
852	update_position(op->map, op->x, op->y);
853	}
854
855	if(op->more!=NULL)	840	if (op->more)
856	update_object(op->more, action);	841	update_object (op->more, action);
857	}	842	}
858		843
859		844	object::object ()
860	/*
861	* free_object() frees everything allocated by an object, removes
862	* it from the list of used objects, and puts it on the list of
863	* free objects. The IS_FREED() flag is set in the object.
864	* The object must have been removed by remove_ob() first for
865	* this function to succeed.
866	*
867	* If free_inventory is set, free inventory as well. Else drop items in
868	* inventory to the ground.
869	*/
870
871	void
872	free_object (object * ob)
873	{	845	{
874	free_object2 (ob, 0);	846	SET_FLAG (this, FLAG_REMOVED);
875	}
876		847
877	void	848	//expmul = 1.0; declared const for the time being
878	free_object2 (object * ob, int free_inventory)	849	face = blank_face;
879	{	850	}
880	object *tmp, *op;
881		851
882	if (!QUERY_FLAG (ob, FLAG_REMOVED))	852	object::~object ()
883	{	853	{
884	LOG (llevDebug, "Free object called with non removed object\n");	854	unlink ();
885	dump_object (ob);	855
886	#ifdef MANY_CORES	856	free_key_values (this);
887	abort ();	857	}
888	#endif	858
		859	static int object_count;
		860
		861	void object::link ()
		862	{
		863	assert (!index);//D
		864	uuid = UUID::gen ();
		865	count = ++object_count;
		866
		867	refcnt_inc ();
		868	objects.insert (this);
		869	}
		870
		871	void object::unlink ()
		872	{
		873	if (!index)
		874	return;
		875
		876	objects.erase (this);
		877	refcnt_dec ();
		878	}
		879
		880	void
		881	object::activate ()
		882	{
		883	/* If already on active list, don't do anything */
		884	if (active)
		885	return;
		886
		887	if (has_active_speed ())
889	}	888	{
		889	if (flag [FLAG_FREED])
		890	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
890		891
891	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	892	actives.insert (this);
892	{	893	}
893	LOG (llevMonster, "Warning: tried to free friendly object.\n");	894	}
		895
		896	void
		897	object::activate_recursive ()
		898	{
		899	activate ();
		900
		901	for (object *op = inv; op; op = op->below)
		902	op->activate_recursive ();
		903	}
		904
		905	/* This function removes object 'op' from the list of active
		906	* objects.
		907	* This should only be used for style maps or other such
		908	* reference maps where you don't want an object that isn't
		909	* in play chewing up cpu time getting processed.
		910	* The reverse of this is to call update_ob_speed, which
		911	* will do the right thing based on the speed of the object.
		912	*/
		913	void
		914	object::deactivate ()
		915	{
		916	/* If not on the active list, nothing needs to be done */
		917	if (!active)
		918	return;
		919
		920	actives.erase (this);
		921	}
		922
		923	void
		924	object::deactivate_recursive ()
		925	{
		926	for (object *op = inv; op; op = op->below)
		927	op->deactivate_recursive ();
		928
		929	deactivate ();
		930	}
		931
		932	void
		933	object::set_flag_inv (int flag, int value)
		934	{
		935	for (object *op = inv; op; op = op->below)
		936	{
		937	op->flag [flag] = value;
		938	op->set_flag_inv (flag, value);
		939	}
		940	}
		941
		942	/*
		943	* Remove and free all objects in the inventory of the given object.
		944	* object.c ?
		945	*/
		946	void
		947	object::destroy_inv (bool drop_to_ground)
		948	{
		949	// need to check first, because the checks below might segfault
		950	// as we might be on an invalid mapspace and crossfire code
		951	// is too buggy to ensure that the inventory is empty.
		952	// corollary: if you create arrows etc. with stuff in its inventory,
		953	// cf will crash below with off-map x and y
		954	if (!inv)
		955	return;
		956
		957	/* Only if the space blocks everything do we not process -
		958	* if some form of movement is allowed, let objects
		959	* drop on that space.
		960	*/
		961	if (!drop_to_ground
		962	|| !map
		963	|| map->in_memory != MAP_ACTIVE
		964	|| map->no_drop
		965	|| ms ().move_block == MOVE_ALL)
		966	{
		967	while (inv)
		968	inv->destroy ();
		969	}
		970	else
		971	{ /* Put objects in inventory onto this space */
		972	while (inv)
		973	{
		974	object *op = inv;
		975
		976	if (op->flag [FLAG_STARTEQUIP]
		977	|| op->flag [FLAG_NO_DROP]
		978	|| op->type == RUNE
		979	|| op->type == TRAP
		980	|| op->flag [FLAG_IS_A_TEMPLATE]
		981	|| op->flag [FLAG_DESTROY_ON_DEATH])
		982	op->destroy ();
		983	else
		984	map->insert (op, x, y);
		985	}
		986	}
		987	}
		988
		989	object *object::create ()
		990	{
		991	object *op = new object;
		992	op->link ();
		993	return op;
		994	}
		995
		996	static struct freed_map : maptile
		997	{
		998	freed_map ()
		999	{
		1000	path = "<freed objects map>";
		1001	name = "/internal/freed_objects_map";
		1002	width = 3;
		1003	height = 3;
		1004	no_drop = 1;
		1005	no_reset = 1;
		1006
		1007	alloc ();
		1008	in_memory = MAP_ACTIVE;
		1009	}
		1010
		1011	~freed_map ()
		1012	{
		1013	destroy ();
		1014	}
		1015	} freed_map; // freed objects are moved here to avoid crashes
		1016
		1017	void
		1018	object::do_destroy ()
		1019	{
		1020	if (flag [FLAG_IS_LINKED])
		1021	remove_link ();
		1022
		1023	if (flag [FLAG_FRIENDLY])
894	remove_friendly_object (ob);	1024	remove_friendly_object (this);
		1025
		1026	remove ();
		1027
		1028	attachable::do_destroy ();
		1029
		1030	deactivate ();
		1031	unlink ();
		1032
		1033	flag [FLAG_FREED] = 1;
		1034
		1035	// hack to ensure that freed objects still have a valid map
		1036	map = &freed_map;
		1037	x = 1;
		1038	y = 1;
		1039
		1040	if (more)
895	}	1041	{
896		1042	more->destroy ();
897	if (QUERY_FLAG (ob, FLAG_FREED))	1043	more = 0;
898	{	1044	}
899	dump_object (ob);	1045
900	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	1046	head = 0;
		1047
		1048	// clear those pointers that likely might cause circular references
		1049	owner = 0;
		1050	enemy = 0;
		1051	attacked_by = 0;
		1052	current_weapon = 0;
		1053	}
		1054
		1055	void
		1056	object::destroy ()
		1057	{
		1058	if (destroyed ())
		1059	return;
		1060
		1061	if (!is_head () && !head->destroyed ())
		1062	{
		1063	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1064	head->destroy ();
901	return;	1065	return;
902	}	1066	}
903		1067
904	if (ob->more != NULL)	1068	destroy_inv (false);
905	{
906	free_object2 (ob->more, free_inventory);
907	ob->more = NULL;
908	}
909		1069
910	if (ob->inv)	1070	if (is_head ())
911	{	1071	if (sound_destroy)
912	/* Only if the space blocks everything do we not process -	1072	play_sound (sound_destroy);
913	* if some form of movement is allowed, let objects	1073	else if (flag [FLAG_MONSTER])
914	* drop on that space.	1074	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
915	*/
916	if (free_inventory || ob->map == NULL
917	|| ob->map->in_memory != MAP_IN_MEMORY
918	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
919	{
920	op = ob->inv;
921		1075
922	while (op != NULL)	1076	attachable::destroy ();
923	{
924	tmp = op->below;
925	remove_ob (op);
926	free_object2 (op, free_inventory);
927	op = tmp;
928	}
929	}
930	else
931	{ /* Put objects in inventory onto this space */
932	op = ob->inv;
933
934	while (op != NULL)
935	{
936	tmp = op->below;
937	remove_ob (op);
938
939	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
940	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
941	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
942	free_object (op);
943	else
944	{
945	op->x = ob->x;
946	op->y = ob->y;
947	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
948	}
949
950	op = tmp;
951	}
952	}
953	}
954
955	/* Remove object from the active list */
956	ob->speed = 0;
957	update_ob_speed (ob);
958
959	SET_FLAG (ob, FLAG_FREED);
960	ob->count = 0;
961
962	/* Remove this object from the list of used objects */
963	if (ob->prev == NULL)
964	{
965	objects = ob->next;
966
967	if (objects != NULL)
968	objects->prev = NULL;
969	}
970	else
971	{
972	ob->prev->next = ob->next;
973
974	if (ob->next != NULL)
975	ob->next->prev = ob->prev;
976	}
977
978	free_key_values (ob);
979
980	/* Now link it with the free_objects list: */
981	ob->prev = 0;
982	ob->next = 0;
983
984	delete ob;
985	}	1077	}
986		1078
987	/*	1079	/* op->remove ():
988	* sub_weight() recursively (outwards) subtracts a number from the
989	* weight of an object (and what is carried by it's environment(s)).
990	*/
991
992	void sub_weight (object *op, signed long weight) {
993	while (op != NULL) {
994	if (op->type == CONTAINER) {
995	weight=(signed long)(weight*(100-op->stats.Str)/100);
996	}
997	op->carrying-=weight;
998	op = op->env;
999	}
1000	}
1001
1002	/* remove_ob(op):
1003	* This function removes the object op from the linked list of objects	1080	* This function removes the object op from the linked list of objects
1004	* which it is currently tied to. When this function is done, the	1081	* which it is currently tied to. When this function is done, the
1005	* object will have no environment. If the object previously had an	1082	* object will have no environment. If the object previously had an
1006	* environment, the x and y coordinates will be updated to	1083	* environment, the x and y coordinates will be updated to
1007	* the previous environment.	1084	* the previous environment.
1008	* Beware: This function is called from the editor as well!
1009	*/	1085	*/
		1086	void
		1087	object::do_remove ()
		1088	{
		1089	if (flag [FLAG_REMOVED])
		1090	return;
1010		1091
1011	void remove_ob(object *op) {	1092	INVOKE_OBJECT (REMOVE, this);
1012	object *tmp,*last=NULL;
1013	object *otmp;
1014	tag_t tag;
1015	int check_walk_off;
1016	mapstruct *m;
1017	sint16 x,y;
1018
1019		1093
1020	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1094	flag [FLAG_REMOVED] = true;
1021	dump_object(op);
1022	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1023		1095
1024	/* Changed it to always dump core in this case. As has been learned	1096	if (more)
1025	* in the past, trying to recover from errors almost always	1097	more->remove ();
1026	* make things worse, and this is a real error here - something
1027	* that should not happen.
1028	* Yes, if this was a mission critical app, trying to do something
1029	* to recover may make sense, but that is because failure of the app
1030	* may have other disastrous problems. Cf runs out of a script
1031	* so is easily enough restarted without any real problems.
1032	* MSW 2001-07-01
1033	*/
1034	abort();
1035	}
1036	if(op->more!=NULL)
1037	remove_ob(op->more);
1038		1098
1039	SET_FLAG(op, FLAG_REMOVED);
1040
1041	/*	1099	/*
1042	* In this case, the object to be removed is in someones	1100	* In this case, the object to be removed is in someones
1043	* inventory.	1101	* inventory.
		1102	*/
		1103	if (env)
		1104	{
		1105	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
		1106	if (object *pl = visible_to ())
		1107	esrv_del_item (pl->contr, count);
		1108	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
		1109
		1110	adjust_weight (env, -total_weight ());
		1111
		1112	object *pl = in_player ();
		1113
		1114	/* we set up values so that it could be inserted into
		1115	* the map, but we don't actually do that - it is up
		1116	* to the caller to decide what we want to do.
1044	*/	1117	*/
1045	if(op->env!=NULL) {	1118	map = env->map;
1046	if(op->nrof)	1119	x = env->x;
1047	sub_weight(op->env, op->weight*op->nrof);	1120	y = env->y;
1048	else
1049	sub_weight(op->env, op->weight+op->carrying);
1050		1121
		1122	// make sure cmov optimisation is applicable
		1123	*(above ? &above->below : &env->inv) = below;
		1124	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1125
		1126	above = 0;
		1127	below = 0;
		1128	env = 0;
		1129
1051	/* NO_FIX_PLAYER is set when a great many changes are being	1130	/* NO_FIX_PLAYER is set when a great many changes are being
1052	* made to players inventory. If set, avoiding the call	1131	* made to players inventory. If set, avoiding the call
1053	* to save cpu time.	1132	* to save cpu time.
1054	*/	1133	*/
1055	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1134	if (pl)
1056	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1135	if (pl->is_player () && (glow_radius || !QUERY_FLAG (pl, FLAG_NO_FIX_PLAYER)))
1057	fix_player(otmp);
1058
1059	if(op->above!=NULL)
1060	op->above->below=op->below;
1061	else
1062	op->env->inv=op->below;
1063
1064	if(op->below!=NULL)
1065	op->below->above=op->above;
1066
1067	/* we set up values so that it could be inserted into
1068	* the map, but we don't actually do that - it is up
1069	* to the caller to decide what we want to do.
1070	*/	1136	{
1071	op->x=op->env->x,op->y=op->env->y;	1137	pl->update_stats ();
1072	op->map=op->env->map;	1138
1073	op->above=NULL,op->below=NULL;	1139	if (glow_radius && pl->is_on_map ())
1074	op->env=NULL;	1140	update_all_los (pl->map, pl->x, pl->y);
		1141	}
		1142	}
		1143	else if (map)
		1144	{
		1145	map->dirty = true;
		1146	mapspace &ms = this->ms ();
		1147
		1148	if (object *pl = ms.player ())
		1149	{
		1150	if (is_player ())
		1151	{
		1152	if (!flag [FLAG_WIZPASS])
		1153	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1154
		1155	// leaving a spot always closes any open container on the ground
		1156	if (container && !container->env)
		1157	// this causes spurious floorbox updates, but it ensures
		1158	// that the CLOSE event is being sent.
		1159	close_container ();
		1160
		1161	--map->players;
		1162	map->touch ();
		1163	}
		1164	else if (pl->container_ () == this)
		1165	{
		1166	// removing a container should close it
		1167	close_container ();
		1168	}
		1169
		1170	esrv_del_item (pl->contr, count);
		1171	}
		1172
		1173	/* link the object above us */
		1174	// re-link, make sure compiler can easily use cmove
		1175	*(above ? &above->below : &ms.top) = below;
		1176	*(below ? &below->above : &ms.bot) = above;
		1177
		1178	above = 0;
		1179	below = 0;
		1180
		1181	ms.invalidate ();
		1182
		1183	if (map->in_memory == MAP_SAVING)
1075	return;	1184	return;
1076	}
1077		1185
1078	/* If we get here, we are removing it from a map */	1186	int check_walk_off = !flag [FLAG_NO_APPLY];
1079	if (op->map == NULL) return;
1080		1187
1081	x = op->x;	1188	if (object *pl = ms.player ())
1082	y = op->y;
1083	m = get_map_from_coord(op->map, &x, &y);
1084
1085	if (!m) {
1086	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1087	op->map->path, op->x, op->y);
1088	/* in old days, we used to set x and y to 0 and continue.
1089	* it seems if we get into this case, something is probablye
1090	* screwed up and should be fixed.
1091	*/
1092	abort();
1093	}
1094	if (op->map != m) {
1095	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1096	op->map->path, m->path, op->x, op->y, x, y);
1097	}
1098
1099	/* Re did the following section of code - it looks like it had
1100	* lots of logic for things we no longer care about
1101	*/
1102
1103	/* link the object above us */
1104	if (op->above)
1105	op->above->below=op->below;
1106	else
1107	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1108
1109	/* Relink the object below us, if there is one */
1110	if(op->below) {
1111	op->below->above=op->above;
1112	} else {
1113	/* Nothing below, which means we need to relink map object for this space
1114	* use translated coordinates in case some oddness with map tiling is
1115	* evident
1116	*/
1117	if(GET_MAP_OB(m,x,y)!=op) {
1118	dump_object(op);
1119	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);
1120	dump_object(GET_MAP_OB(m,x,y));
1121	LOG(llevError,"%s\n",errmsg);
1122	}	1189	{
1123	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1190	if (pl->container_ () == this)
1124	}
1125	op->above=NULL;
1126	op->below=NULL;
1127
1128	if (op->map->in_memory == MAP_SAVING)
1129	return;
1130
1131	tag = op->count;
1132	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1133	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1134	/* No point updating the players look faces if he is the object
1135	* being removed.
1136	*/
1137
1138	if(tmp->type==PLAYER && tmp!=op) {
1139	/* If a container that the player is currently using somehow gets	1191	/* If a container that the player is currently using somehow gets
1140	* removed (most likely destroyed), update the player view	1192	* removed (most likely destroyed), update the player view
1141	* appropriately.	1193	* appropriately.
1142	*/	1194	*/
1143	if (tmp->container==op) {	1195	pl->close_container ();
1144	CLEAR_FLAG(op, FLAG_APPLIED);	1196
1145	tmp->container=NULL;	1197	//TODO: the floorbox prev/next might need updating
1146	}	1198	//esrv_del_item (pl->contr, count);
1147	tmp->contr->socket.update_look=1;	1199	//TODO: update floorbox to preserve ordering
		1200	if (pl->contr->ns)
		1201	pl->contr->ns->floorbox_update ();
1148	}	1202	}
		1203
		1204	if (check_walk_off)
		1205	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1206	{
		1207	above = tmp->above;
		1208
		1209	/* No point updating the players look faces if he is the object
		1210	* being removed.
		1211	*/
		1212
1149	/* See if player moving off should effect something */	1213	/* See if object moving off should effect something */
1150	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1214	if ((move_type & tmp->move_off)
1151	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1215	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1152
1153	move_apply(tmp, op, NULL);	1216	move_apply (tmp, this, 0);
1154	if (was_destroyed (op, tag)) {
1155	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1156	"leaving object\n", &tmp->name, &tmp->arch->name);
1157	}	1217	}
1158	}
1159		1218
1160	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1219	if (affects_los ())
1161
1162	if(tmp->above == tmp)
1163	tmp->above = NULL;
1164	last=tmp;
1165	}
1166	/* last == NULL of there are no objects on this space */
1167	if (last==NULL) {
1168	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1169	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1170	* those out anyways, and if there are any flags set right now, they won't
1171	* be correct anyways.
1172	*/
1173	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1174	update_position(op->map, op->x, op->y);
1175	}
1176	else
1177	update_object(last, UP_OBJ_REMOVE);
1178
1179	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1180	update_all_los(op->map, op->x, op->y);	1220	update_all_los (map, x, y);
1181		1221	}
1182	}	1222	}
1183		1223
1184	/*	1224	/*
1185	* merge_ob(op,top):	1225	* merge_ob(op,top):
1186	*	1226	*
1187	* This function goes through all objects below and including top, and	1227	* This function goes through all objects below and including top, and
1188	* merges op to the first matching object.	1228	* merges op to the first matching object.
1189	* If top is NULL, it is calculated.	1229	* If top is NULL, it is calculated.
1190	* Returns pointer to object if it succeded in the merge, otherwise NULL	1230	* Returns pointer to object if it succeded in the merge, otherwise NULL
1191	*/	1231	*/
1192		1232	object *
1193	object *merge_ob(object *op, object *top) {	1233	merge_ob (object *op, object *top)
		1234	{
1194	if(!op->nrof)	1235	if (!op->nrof)
1195	return 0;	1236	return 0;
1196	if(top==NULL)	1237
		1238	if (!top)
1197	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1239	for (top = op; top && top->above; top = top->above)
		1240	;
		1241
1198	for(;top!=NULL;top=top->below) {	1242	for (; top; top = top->below)
1199	if(top==op)	1243	if (object::can_merge (op, top))
1200	continue;
1201	if (CAN_MERGE(op,top))
1202	{	1244	{
1203	top->nrof+=op->nrof;	1245	top->nrof += op->nrof;
1204	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1246
1205	op->weight = 0; /* Don't want any adjustements now */	1247	if (object *pl = top->visible_to ())
1206	remove_ob(op);	1248	esrv_update_item (UPD_NROF, pl, top);
1207	free_object(op);	1249
		1250	op->weight = 0; // cancel the addition above
		1251	op->carrying = 0; // must be 0 already
		1252
		1253	op->destroy ();
		1254
1208	return top;	1255	return top;
1209	}	1256	}
1210	}	1257
1211	return NULL;	1258	return 0;
1212	}	1259	}
1213		1260
		1261	void
		1262	object::expand_tail ()
		1263	{
		1264	if (more)
		1265	return;
		1266
		1267	object *prev = this;
		1268
		1269	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1270	{
		1271	object *op = arch_to_object (at);
		1272
		1273	op->name = name;
		1274	op->name_pl = name_pl;
		1275	op->title = title;
		1276
		1277	op->head = this;
		1278	prev->more = op;
		1279
		1280	prev = op;
		1281	}
		1282	}
		1283
1214	/*	1284	/*
1215	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1285	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1216	* job preparing multi-part monsters	1286	* job preparing multi-part monsters.
1217	*/	1287	*/
		1288	object *
1218	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1289	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1219	object* tmp;	1290	{
1220	if (op->head)	1291	op->remove ();
1221	op=op->head;	1292
1222	for (tmp=op;tmp;tmp=tmp->more){	1293	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1294	{
1223	tmp->x=x+tmp->arch->clone.x;	1295	tmp->x = x + tmp->arch->x;
1224	tmp->y=y+tmp->arch->clone.y;	1296	tmp->y = y + tmp->arch->y;
1225	}	1297	}
		1298
1226	return insert_ob_in_map (op, m, originator, flag);	1299	return insert_ob_in_map (op, m, originator, flag);
1227	}	1300	}
1228		1301
1229	/*	1302	/*
1230	* insert_ob_in_map (op, map, originator, flag):	1303	* insert_ob_in_map (op, map, originator, flag):
1231	* This function inserts the object in the two-way linked list	1304	* This function inserts the object in the two-way linked list
…		…
1244	* Return value:	1317	* Return value:
1245	* new object if 'op' was merged with other object	1318	* new object if 'op' was merged with other object
1246	* NULL if 'op' was destroyed	1319	* NULL if 'op' was destroyed
1247	* just 'op' otherwise	1320	* just 'op' otherwise
1248	*/	1321	*/
1249		1322	object *
1250	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1323	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1251	{	1324	{
1252	object *tmp, *top, *floor=NULL;	1325	op->remove ();
1253	sint16 x,y;
1254		1326
1255	if (QUERY_FLAG (op, FLAG_FREED)) {	1327	if (m == &freed_map)//D TODO: remove soon
1256	LOG (llevError, "Trying to insert freed object!\n");	1328	{//D
1257	return NULL;	1329	LOG (llevError | logBacktrace, "tries to insret object on freed objects map: %s", op->debug_desc ());//D
		1330	}//D
		1331
		1332	/* Ideally, the caller figures this out. However, it complicates a lot
		1333	* of areas of callers (eg, anything that uses find_free_spot would now
		1334	* need extra work
		1335	*/
		1336	maptile *newmap = m;
		1337	if (!xy_normalise (newmap, op->x, op->y))
1258	}	1338	{
1259	if(m==NULL) {	1339	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
1260	dump_object(op);
1261	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1262	return op;	1340	return 0;
1263	}	1341	}
1264	if(out_of_map(m,op->x,op->y)) {	1342
1265	dump_object(op);	1343	if (object *more = op->more)
1266	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1344	if (!insert_ob_in_map (more, m, originator, flag))
1267	#ifdef MANY_CORES
1268	/* Better to catch this here, as otherwise the next use of this object
1269	* is likely to cause a crash. Better to find out where it is getting
1270	* improperly inserted.
1271	*/
1272	abort();
1273	#endif
1274	return op;	1345	return 0;
1275	}
1276	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1277	dump_object(op);
1278	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1279	return op;
1280	}
1281	if(op->more!=NULL) {
1282	/* The part may be on a different map. */
1283		1346
1284	object *more = op->more;	1347	op->flag [FLAG_REMOVED] = false;
		1348	op->env = 0;
		1349	op->map = newmap;
1285		1350
1286	/* We really need the caller to normalize coordinates - if	1351	mapspace &ms = op->ms ();
1287	* we set the map, that doesn't work if the location is within	1352
1288	* a map and this is straddling an edge. So only if coordinate	1353	/* this has to be done after we translate the coordinates.
1289	* is clear wrong do we normalize it.	1354	*/
		1355	if (op->nrof && !(flag & INS_NO_MERGE))
		1356	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1357	if (object::can_merge (op, tmp))
1290	*/	1358	{
1291	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1359	// TODO: we actually want to update tmp, not op,
1292	more->map = get_map_from_coord(m, &more->x, &more->y);	1360	// but some caller surely breaks when we return tmp
1293	} else if (!more->map) {	1361	// from here :/
1294	/* For backwards compatibility - when not dealing with tiled maps,	1362	op->nrof += tmp->nrof;
1295	* more->map should always point to the parent.	1363	tmp->destroy ();
1296	*/
1297	more->map = m;
1298	}	1364	}
1299		1365
1300	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1366	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1301	if ( ! op->head)	1367	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1302	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1368
1303	return NULL;	1369	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1370	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1371
		1372	if (flag & INS_BELOW_ORIGINATOR)
		1373	{
		1374	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1375	{
		1376	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1377	abort ();
1304	}	1378	}
		1379
		1380	if (!originator->is_on_map ())
		1381	{
		1382	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1383	op->debug_desc (), originator->debug_desc ());
		1384	abort ();
		1385	}
		1386
		1387	op->above = originator;
		1388	op->below = originator->below;
		1389	originator->below = op;
		1390
		1391	*(op->below ? &op->below->above : &ms.bot) = op;
		1392	}
		1393	else
1305	}	1394	{
1306	CLEAR_FLAG(op,FLAG_REMOVED);	1395	object *floor = 0;
		1396	object *top = ms.top;
1307		1397
1308	/* Ideally, the caller figures this out. However, it complicates a lot	1398	/* If there are other objects, then */
1309	* of areas of callers (eg, anything that uses find_free_spot would now	1399	if (top)
1310	* need extra work	1400	{
1311	*/	1401	/*
1312	op->map=get_map_from_coord(m, &op->x, &op->y);	1402	* If there are multiple objects on this space, we do some trickier handling.
1313	x = op->x;	1403	* We've already dealt with merging if appropriate.
1314	y = op->y;	1404	* Generally, we want to put the new object on top. But if
		1405	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1406	* floor, we want to insert above that and no further.
		1407	* Also, if there are spell objects on this space, we stop processing
		1408	* once we get to them. This reduces the need to traverse over all of
		1409	* them when adding another one - this saves quite a bit of cpu time
		1410	* when lots of spells are cast in one area. Currently, it is presumed
		1411	* that flying non pickable objects are spell objects.
		1412	*/
		1413	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1414	{
		1415	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) || QUERY_FLAG (tmp, FLAG_OVERLAY_FLOOR))
		1416	floor = tmp;
1315		1417
1316	/* this has to be done after we translate the coordinates.	1418	if (QUERY_FLAG (tmp, FLAG_NO_PICK) && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1317	*/	1419	{
1318	if(op->nrof && !(flag & INS_NO_MERGE)) {	1420	/* We insert above top, so we want this object below this */
1319	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1421	top = tmp->below;
1320	if (CAN_MERGE(op,tmp)) {	1422	break;
1321	op->nrof+=tmp->nrof;	1423	}
1322	remove_ob(tmp);	1424
1323	free_object(tmp);	1425	top = tmp;
1324	}	1426	}
1325	}
1326		1427
1327	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1428	/* We let update_position deal with figuring out what the space
1328	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1429	* looks like instead of lots of conditions here.
1329	if (!QUERY_FLAG(op, FLAG_ALIVE))	1430	* makes things faster, and effectively the same result.
1330	CLEAR_FLAG(op, FLAG_NO_STEAL);	1431	*/
1331		1432
1332	if (flag & INS_BELOW_ORIGINATOR) {	1433	/* Have object 'fall below' other objects that block view.
1333	if (originator->map != op->map || originator->x != op->x ||	1434	* Unless those objects are exits.
1334	originator->y != op->y) {	1435	* If INS_ON_TOP is used, don't do this processing
1335	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1436	* Need to find the object that in fact blocks view, otherwise
1336	abort();	1437	* stacking is a bit odd.
		1438	*/
		1439	if (!(flag & INS_ON_TOP)
		1440	&& ms.flags () & P_BLOCKSVIEW
		1441	&& (op->face && !faces [op->face].visibility))
		1442	{
		1443	object *last;
		1444
		1445	for (last = top; last != floor; last = last->below)
		1446	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1447	break;
		1448
		1449	/* Check to see if we found the object that blocks view,
		1450	* and make sure we have a below pointer for it so that
		1451	* we can get inserted below this one, which requires we
		1452	* set top to the object below us.
		1453	*/
		1454	if (last && last->below && last != floor)
		1455	top = last->below;
		1456	}
		1457	} /* If objects on this space */
		1458
		1459	if (flag & INS_ABOVE_FLOOR_ONLY)
		1460	top = floor;
		1461
		1462	// insert object above top, or bottom-most if top = 0
		1463	if (!top)
		1464	{
		1465	op->below = 0;
		1466	op->above = ms.bot;
		1467	ms.bot = op;
		1468
		1469	*(op->above ? &op->above->below : &ms.top) = op;
1337	}	1470	}
1338	op->above = originator;
1339	op->below = originator->below;
1340	if (op->below) op->below->above = op;
1341	else SET_MAP_OB(op->map, op->x, op->y, op);
1342	/* since *below* originator, no need to update top */
1343	originator->below = op;
1344	} else {	1471	else
1345	/* If there are other objects, then */
1346	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1347	object *last=NULL;
1348	/*
1349	* If there are multiple objects on this space, we do some trickier handling.
1350	* We've already dealt with merging if appropriate.
1351	* Generally, we want to put the new object on top. But if
1352	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1353	* floor, we want to insert above that and no further.
1354	* Also, if there are spell objects on this space, we stop processing
1355	* once we get to them. This reduces the need to traverse over all of
1356	* them when adding another one - this saves quite a bit of cpu time
1357	* when lots of spells are cast in one area. Currently, it is presumed
1358	* that flying non pickable objects are spell objects.
1359	*/
1360
1361	while (top != NULL) {
1362	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1363	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1364	if (QUERY_FLAG(top, FLAG_NO_PICK)
1365	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1366	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1367	{
1368	/* We insert above top, so we want this object below this */
1369	top=top->below;
1370	break;
1371	}
1372	last = top;
1373	top = top->above;
1374	}
1375	/* Don't want top to be NULL, so set it to the last valid object */
1376	top = last;
1377
1378	/* We let update_position deal with figuring out what the space
1379	* looks like instead of lots of conditions here.
1380	* makes things faster, and effectively the same result.
1381	*/
1382
1383	/* Have object 'fall below' other objects that block view.
1384	* Unless those objects are exits, type 66
1385	* If INS_ON_TOP is used, don't do this processing
1386	* Need to find the object that in fact blocks view, otherwise
1387	* stacking is a bit odd.
1388	*/
1389	if (!(flag & INS_ON_TOP) &&
1390	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1391	(op->face && !op->face->visibility)) {
1392	for (last=top; last != floor; last=last->below)
1393	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1394	/* Check to see if we found the object that blocks view,
1395	* and make sure we have a below pointer for it so that
1396	* we can get inserted below this one, which requires we
1397	* set top to the object below us.
1398	*/
1399	if (last && last->below && last != floor) top=last->below;
1400	}
1401	} /* If objects on this space */
1402	if (flag & INS_MAP_LOAD)
1403	top = GET_MAP_TOP(op->map,op->x,op->y);
1404	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1405
1406	/* Top is the object that our object (op) is going to get inserted above.
1407	*/	1472	{
1408
1409	/* First object on this space */
1410	if (!top) {
1411	op->above = GET_MAP_OB(op->map, op->x, op->y);
1412	if (op->above) op->above->below = op;
1413	op->below = NULL;
1414	SET_MAP_OB(op->map, op->x, op->y, op);
1415	} else { /* get inserted into the stack above top */
1416	op->above = top->above;	1473	op->above = top->above;
1417	if (op->above) op->above->below = op;
1418	op->below = top;
1419	top->above = op;	1474	top->above = op;
		1475
		1476	op->below = top;
		1477	*(op->above ? &op->above->below : &ms.top) = op;
1420	}	1478	}
1421	if (op->above==NULL)	1479	}
1422	SET_MAP_TOP(op->map,op->x, op->y, op);
1423	} /* else not INS_BELOW_ORIGINATOR */
1424		1480
1425	if(op->type==PLAYER)	1481	if (op->is_player ())
		1482	{
1426	op->contr->do_los=1;	1483	op->contr->do_los = 1;
		1484	++op->map->players;
		1485	op->map->touch ();
		1486	}
1427		1487
1428	/* If we have a floor, we know the player, if any, will be above	1488	op->map->dirty = true;
1429	* it, so save a few ticks and start from there.
1430	*/
1431	if (!(flag & INS_MAP_LOAD))
1432	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1433	if (tmp->type == PLAYER)
1434	tmp->contr->socket.update_look=1;
1435	}
1436		1489
		1490	if (object *pl = ms.player ())
		1491	//TODO: the floorbox prev/next might need updating
		1492	//esrv_send_item (pl, op);
		1493	//TODO: update floorbox to preserve ordering
		1494	if (pl->contr->ns)
		1495	pl->contr->ns->floorbox_update ();
		1496
1437	/* If this object glows, it may affect lighting conditions that are	1497	/* If this object glows, it may affect lighting conditions that are
1438	* visible to others on this map. But update_all_los is really	1498	* visible to others on this map. But update_all_los is really
1439	* an inefficient way to do this, as it means los for all players	1499	* an inefficient way to do this, as it means los for all players
1440	* on the map will get recalculated. The players could very well	1500	* on the map will get recalculated. The players could very well
1441	* be far away from this change and not affected in any way -	1501	* be far away from this change and not affected in any way -
1442	* this should get redone to only look for players within range,	1502	* this should get redone to only look for players within range,
1443	* or just updating the P_NEED_UPDATE for spaces within this area	1503	* or just updating the P_UPTODATE for spaces within this area
1444	* of effect may be sufficient.	1504	* of effect may be sufficient.
1445	*/	1505	*/
1446	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1506	if (op->affects_los ())
		1507	{
		1508	op->ms ().invalidate ();
1447	update_all_los(op->map, op->x, op->y);	1509	update_all_los (op->map, op->x, op->y);
		1510	}
1448		1511
1449
1450	/* updates flags (blocked, alive, no magic, etc) for this map space */	1512	/* updates flags (blocked, alive, no magic, etc) for this map space */
1451	update_object(op,UP_OBJ_INSERT);	1513	update_object (op, UP_OBJ_INSERT);
1452		1514
		1515	INVOKE_OBJECT (INSERT, op);
1453		1516
1454	/* Don't know if moving this to the end will break anything. However,	1517	/* Don't know if moving this to the end will break anything. However,
1455	* we want to have update_look set above before calling this.	1518	* we want to have floorbox_update called before calling this.
1456	*	1519	*
1457	* check_move_on() must be after this because code called from	1520	* check_move_on() must be after this because code called from
1458	* check_move_on() depends on correct map flags (so functions like	1521	* check_move_on() depends on correct map flags (so functions like
1459	* blocked() and wall() work properly), and these flags are updated by	1522	* blocked() and wall() work properly), and these flags are updated by
1460	* update_object().	1523	* update_object().
1461	*/	1524	*/
1462		1525
1463	/* if this is not the head or flag has been passed, don't check walk on status */	1526	/* if this is not the head or flag has been passed, don't check walk on status */
1464
1465	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1527	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1528	{
1466	if (check_move_on(op, originator))	1529	if (check_move_on (op, originator))
1467	return NULL;	1530	return 0;
1468		1531
1469	/* If we are a multi part object, lets work our way through the check	1532	/* If we are a multi part object, lets work our way through the check
1470	* walk on's.	1533	* walk on's.
1471	*/	1534	*/
1472	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1535	for (object *tmp = op->more; tmp; tmp = tmp->more)
1473	if (check_move_on (tmp, originator))	1536	if (check_move_on (tmp, originator))
1474	return NULL;	1537	return 0;
1475	}	1538	}
		1539
1476	return op;	1540	return op;
1477	}	1541	}
1478		1542
1479	/* this function inserts an object in the map, but if it	1543	/* this function inserts an object in the map, but if it
1480	* finds an object of its own type, it'll remove that one first.	1544	* finds an object of its own type, it'll remove that one first.
1481	* op is the object to insert it under: supplies x and the map.	1545	* op is the object to insert it under: supplies x and the map.
1482	*/	1546	*/
1483	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1547	void
1484	object *tmp;	1548	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1485	object *tmp1;	1549	{
1486
1487	/* first search for itself and remove any old instances */	1550	/* first search for itself and remove any old instances */
1488		1551
1489	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1552	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1490	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1553	if (tmp->arch->archname == archname) /* same archetype */
1491	remove_ob(tmp);	1554	tmp->destroy ();
1492	free_object(tmp);
1493	}
1494	}
1495		1555
1496	tmp1=arch_to_object(find_archetype(arch_string));	1556	object *tmp = arch_to_object (archetype::find (archname));
1497		1557
1498		1558	tmp->x = op->x;
1499	tmp1->x = op->x; tmp1->y = op->y;	1559	tmp->y = op->y;
		1560
1500	insert_ob_in_map(tmp1,op->map,op,0);	1561	insert_ob_in_map (tmp, op->map, op, 0);
1501	}	1562	}
1502		1563
1503	/*	1564	object *
1504	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1565	object::insert_at (object *where, object *originator, int flags)
1505	* is returned contains nr objects, and the remaining parts contains	1566	{
1506	* the rest (or is removed and freed if that number is 0).	1567	if (where->env)
1507	* On failure, NULL is returned, and the reason put into the	1568	return where->env->insert (this);
1508	* global static errmsg array.	1569	else
1509	*/	1570	return where->map->insert (this, where->x, where->y, originator, flags);
		1571	}
1510		1572
1511	object *get_split_ob(object *orig_ob, uint32 nr) {	1573	// check whether we can put this into the map, respect max_nrof, max_volume, max_items
1512	object *newob;	1574	bool
1513	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1575	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1576	{
		1577	mapspace &ms = m->at (x, y);
1514		1578
1515	if(orig_ob->nrof<nr) {	1579	int items = ms.items ();
1516	sprintf(errmsg,"There are only %d %ss.",
1517	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1518	return NULL;
1519	}
1520	newob = object_create_clone(orig_ob);
1521	if((orig_ob->nrof-=nr)<1) {
1522	if ( ! is_removed)
1523	remove_ob(orig_ob);
1524	free_object2(orig_ob, 1);
1525	}
1526	else if ( ! is_removed) {
1527	if(orig_ob->env!=NULL)
1528	sub_weight (orig_ob->env,orig_ob->weight*nr);
1529	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1530	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1531	LOG(llevDebug,
1532	"Error, Tried to split object whose map is not in memory.\n");
1533	return NULL;
1534	}
1535	}
1536	newob->nrof=nr;
1537		1580
		1581	if (!items // testing !items ensures we can drop at least one item
		1582	|| (items < m->max_items
		1583	&& ms.volume () < m->max_volume
		1584	&& nrof <= m->max_nrof))
1538	return newob;	1585	return true;
1539	}
1540		1586
		1587	if (originator && originator->is_player ())
		1588	originator->contr->failmsg (format (
		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
1541	/*	1596	/*
1542	* decrease_ob_nr(object, number) decreases a specified number from	1597	* decrease(object, number) decreases a specified number from
1543	* 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
1544	* is subsequently removed and freed.	1599	* is subsequently removed and freed.
1545	*	1600	*
1546	* 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
1547	*/	1602	*/
1548		1603	bool
1549	object *decrease_ob_nr (object *op, uint32 i)	1604	object::decrease (sint32 nr)
1550	{	1605	{
1551	object *tmp;	1606	if (!nr)
1552	player *pl;	1607	return true;
1553		1608
1554	if (i == 0) /* objects with op->nrof require this check */	1609	nr = min (nr, nrof);
		1610
		1611	if (nrof > nr)
		1612	{
		1613	nrof -= nr;
		1614	adjust_weight (env, -weight * max (1, nr)); // carrying == 0
		1615
		1616	if (object *pl = visible_to ())
		1617	esrv_update_item (UPD_NROF, pl, this);
		1618
		1619	return true;
		1620	}
		1621	else
		1622	{
		1623	destroy ();
		1624	return false;
		1625	}
		1626	}
		1627
		1628	/*
		1629	* split(ob,nr) splits up ob into two parts. The part which
		1630	* is returned contains nr objects, and the remaining parts contains
		1631	* the rest (or is removed and returned if that number is 0).
		1632	* On failure, NULL is returned.
		1633	*/
		1634	object *
		1635	object::split (sint32 nr)
		1636	{
		1637	int have = number_of ();
		1638
		1639	if (have < nr)
		1640	return 0;
		1641	else if (have == nr)
		1642	{
		1643	remove ();
		1644	return this;
		1645	}
		1646	else
		1647	{
		1648	decrease (nr);
		1649
		1650	object *op = deep_clone ();
		1651	op->nrof = nr;
1555	return op;	1652	return op;
1556
1557	if (i > op->nrof)
1558	i = op->nrof;
1559
1560	if (QUERY_FLAG (op, FLAG_REMOVED))
1561	{	1653	}
1562	op->nrof -= i;	1654	}
		1655
		1656	object *
		1657	insert_ob_in_ob (object *op, object *where)
		1658	{
		1659	if (!where)
1563	}	1660	{
1564	else if (op->env != NULL)	1661	char *dump = dump_object (op);
1565	{	1662	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1566	/* is this object in the players inventory, or sub container	1663	free (dump);
1567	* therein?
1568	*/
1569	tmp = is_player_inv (op->env);
1570	/* nope. Is this a container the player has opened?
1571	* If so, set tmp to that player.
1572	* IMO, searching through all the players will mostly
1573	* likely be quicker than following op->env to the map,
1574	* and then searching the map for a player.
1575	*/
1576	if (!tmp) {
1577	for (pl=first_player; pl; pl=pl->next)
1578	if (pl->ob->container == op->env) break;
1579	if (pl) tmp=pl->ob;
1580	else tmp=NULL;
1581	}
1582
1583	if (i < op->nrof) {
1584	sub_weight (op->env, op->weight * i);
1585	op->nrof -= i;
1586	if (tmp) {
1587	esrv_send_item(tmp, op);
1588	}
1589	} else {
1590	remove_ob (op);
1591	op->nrof = 0;
1592	if (tmp) {
1593	esrv_del_item(tmp->contr, op->count);
1594	}
1595	}
1596	}
1597	else
1598	{
1599	object *above = op->above;
1600
1601	if (i < op->nrof) {
1602	op->nrof -= i;
1603	} else {
1604	remove_ob (op);
1605	op->nrof = 0;
1606	}
1607	/* Since we just removed op, op->above is null */
1608	for (tmp = above; tmp != NULL; tmp = tmp->above)
1609	if (tmp->type == PLAYER) {
1610	if (op->nrof)
1611	esrv_send_item(tmp, op);
1612	else
1613	esrv_del_item(tmp->contr, op->count);
1614	}
1615	}
1616
1617	if (op->nrof) {
1618	return op;	1664	return op;
1619	} else {	1665	}
1620	free_object (op);	1666
1621	return NULL;	1667	if (where->head_ () != where)
1622	}	1668	{
1623	}	1669	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1624		1670	where = where->head;
1625	/*
1626	* add_weight(object, weight) adds the specified weight to an object,
1627	* and also updates how much the environment(s) is/are carrying.
1628	*/
1629
1630	void add_weight (object *op, signed long weight) {
1631	while (op!=NULL) {
1632	if (op->type == CONTAINER) {
1633	weight=(signed long)(weight*(100-op->stats.Str)/100);
1634	}
1635	op->carrying+=weight;
1636	op=op->env;
1637	}	1671	}
1638	}
1639		1672
		1673	return where->insert (op);
		1674	}
		1675
1640	/*	1676	/*
1641	* insert_ob_in_ob(op,environment):	1677	* env->insert (op)
1642	* This function inserts the object op in the linked list	1678	* This function inserts the object op in the linked list
1643	* inside the object environment.	1679	* inside the object environment.
1644	*	1680	*
1645	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1646	* the inventory at the last position or next to other objects of the same
1647	* type.
1648	* Frank: Now sorted by type, archetype and magic!
1649	*
1650	* The function returns now pointer to inserted item, and return value can	1681	* The function returns now pointer to inserted item, and return value can
1651	* be != op, if items are merged. -Tero	1682	* be != op, if items are merged. -Tero
1652	*/	1683	*/
1653		1684	object *
1654	object *insert_ob_in_ob(object *op,object *where) {	1685	object::insert (object *op)
1655	object *tmp, *otmp;	1686	{
1656
1657	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1658	dump_object(op);
1659	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1660	return op;
1661	}
1662	if(where==NULL) {
1663	dump_object(op);
1664	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1665	return op;
1666	}
1667	if (where->head) {
1668	LOG(llevDebug,
1669	"Warning: Tried to insert object wrong part of multipart object.\n");
1670	where = where->head;
1671	}
1672	if (op->more) {	1687	if (op->more)
		1688	{
1673	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1689	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1674	&op->name, op->count);
1675	return op;	1690	return op;
1676	}	1691	}
1677	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1692
1678	CLEAR_FLAG(op, FLAG_REMOVED);	1693	op->remove ();
		1694
		1695	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1696
1679	if(op->nrof) {	1697	if (op->nrof)
1680	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1698	for (object *tmp = inv; tmp; tmp = tmp->below)
1681	if ( CAN_MERGE(tmp,op) ) {	1699	if (object::can_merge (tmp, op))
		1700	{
1682	/* return the original object and remove inserted object	1701	/* return the original object and remove inserted object
1683	(client needs the original object) */	1702	(client needs the original object) */
1684	tmp->nrof += op->nrof;	1703	tmp->nrof += op->nrof;
1685	/* Weight handling gets pretty funky. Since we are adding to	1704
1686	* tmp->nrof, we need to increase the weight.	1705	if (object *pl = tmp->visible_to ())
1687	*/	1706	esrv_update_item (UPD_NROF, pl, tmp);
1688	add_weight (where, op->weight*op->nrof);	1707
1689	SET_FLAG(op, FLAG_REMOVED);	1708	adjust_weight (this, op->total_weight ());
1690	free_object(op); /* free the inserted object */	1709
		1710	op->destroy ();
1691	op = tmp;	1711	op = tmp;
1692	remove_ob (op); /* and fix old object's links */	1712	goto inserted;
1693	CLEAR_FLAG(op, FLAG_REMOVED);
1694	break;
1695	}	1713	}
1696		1714
1697	/* I assume combined objects have no inventory	1715	op->owner = 0; // it's his/hers now. period.
1698	* We add the weight - this object could have just been removed	1716	op->map = 0;
1699	* (if it was possible to merge). calling remove_ob will subtract	1717	op->x = 0;
1700	* the weight, so we need to add it in again, since we actually do	1718	op->y = 0;
1701	* the linking below
1702	*/
1703	add_weight (where, op->weight*op->nrof);
1704	} else
1705	add_weight (where, (op->weight+op->carrying));
1706		1719
1707	otmp=is_player_inv(where);
1708	if (otmp&&otmp->contr!=NULL) {
1709	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1710	fix_player(otmp);
1711	}
1712
1713	op->map=NULL;
1714	op->env=where;
1715	op->above=NULL;	1720	op->above = 0;
1716	op->below=NULL;	1721	op->below = inv;
1717	op->x=0,op->y=0;	1722	op->env = this;
1718		1723
		1724	if (inv)
		1725	inv->above = op;
		1726
		1727	inv = op;
		1728
		1729	op->flag [FLAG_REMOVED] = 0;
		1730
		1731	if (object *pl = op->visible_to ())
		1732	esrv_send_item (pl, op);
		1733
		1734	adjust_weight (this, op->total_weight ());
		1735
		1736	inserted:
1719	/* reset the light list and los of the players on the map */	1737	/* reset the light list and los of the players on the map */
1720	if((op->glow_radius!=0)&&where->map)	1738	if (op->glow_radius && is_on_map ())
1721	{	1739	{
1722	#ifdef DEBUG_LIGHTS	1740	update_stats ();
1723	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1741	update_all_los (map, x, y);
1724	op->name);
1725	#endif /* DEBUG_LIGHTS */
1726	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1727	}	1742	}
		1743	else if (is_player () && !flag [FLAG_NO_FIX_PLAYER])
		1744	// if this is a player's inventory, update stats
		1745	update_stats ();
1728		1746
1729	/* Client has no idea of ordering so lets not bother ordering it here.	1747	INVOKE_OBJECT (INSERT, this);
1730	* It sure simplifies this function...	1748
1731	*/
1732	if (where->inv==NULL)
1733	where->inv=op;
1734	else {
1735	op->below = where->inv;
1736	op->below->above = op;
1737	where->inv = op;
1738	}
1739	return op;	1749	return op;
1740	}	1750	}
1741		1751
1742	/*	1752	/*
1743	* Checks if any objects has a move_type that matches objects	1753	* Checks if any objects has a move_type that matches objects
…		…
1757	*	1767	*
1758	* MSW 2001-07-08: Check all objects on space, not just those below	1768	* MSW 2001-07-08: Check all objects on space, not just those below
1759	* object being inserted. insert_ob_in_map may not put new objects	1769	* object being inserted. insert_ob_in_map may not put new objects
1760	* on top.	1770	* on top.
1761	*/	1771	*/
1762		1772	int
1763	int check_move_on (object *op, object *originator)	1773	check_move_on (object *op, object *originator)
1764	{	1774	{
		1775	if (QUERY_FLAG (op, FLAG_NO_APPLY))
		1776	return 0;
		1777
1765	object *tmp;	1778	object *tmp;
1766	tag_t tag;
1767	mapstruct *m=op->map;	1779	maptile *m = op->map;
1768	int x=op->x, y=op->y;	1780	int x = op->x, y = op->y;
1769	MoveType move_on, move_slow, move_block;
1770		1781
1771	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1782	mapspace &ms = m->at (x, y);
1772	return 0;
1773		1783
1774	tag = op->count;	1784	ms.update ();
1775		1785
1776	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1786	MoveType move_on = ms.move_on;
1777	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1787	MoveType move_slow = ms.move_slow;
1778	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1788	MoveType move_block = ms.move_block;
1779		1789
1780	/* if nothing on this space will slow op down or be applied,	1790	/* if nothing on this space will slow op down or be applied,
1781	* no need to do checking below. have to make sure move_type	1791	* no need to do checking below. have to make sure move_type
1782	* is set, as lots of objects don't have it set - we treat that	1792	* is set, as lots of objects don't have it set - we treat that
1783	* as walking.	1793	* as walking.
1784	*/	1794	*/
1785	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1795	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1786	return 0;	1796	return 0;
1787		1797
1788	/* This is basically inverse logic of that below - basically,	1798	/* This is basically inverse logic of that below - basically,
1789	* if the object can avoid the move on or slow move, they do so,	1799	* if the object can avoid the move on or slow move, they do so,
1790	* but can't do it if the alternate movement they are using is	1800	* but can't do it if the alternate movement they are using is
1791	* blocked. Logic on this seems confusing, but does seem correct.	1801	* blocked. Logic on this seems confusing, but does seem correct.
1792	*/	1802	*/
1793	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1803	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1794	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1804	return 0;
1795		1805
1796	/* The objects have to be checked from top to bottom.	1806	/* The objects have to be checked from top to bottom.
1797	* Hence, we first go to the top:	1807	* Hence, we first go to the top:
1798	*/	1808	*/
1799		1809	for (object *next, *tmp = ms.top; tmp; tmp = next)
1800	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
1801	tmp->above!=NULL; tmp=tmp->above) {
1802	/* Trim the search when we find the first other spell effect
1803	* this helps performance so that if a space has 50 spell objects,
1804	* we don't need to check all of them.
1805	*/
1806	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
1807	}	1810	{
1808	for(;tmp!=NULL; tmp=tmp->below) {	1811	next = tmp->below;
		1812
		1813	if (tmp == op)
1809	if (tmp == op) continue; /* Can't apply yourself */	1814	continue; /* Can't apply yourself */
1810		1815
1811	/* Check to see if one of the movement types should be slowed down.	1816	/* Check to see if one of the movement types should be slowed down.
1812	* Second check makes sure that the movement types not being slowed	1817	* Second check makes sure that the movement types not being slowed
1813	* (~slow_move) is not blocked on this space - just because the	1818	* (~slow_move) is not blocked on this space - just because the
1814	* space doesn't slow down swimming (for example), if you can't actually	1819	* space doesn't slow down swimming (for example), if you can't actually
1815	* swim on that space, can't use it to avoid the penalty.	1820	* swim on that space, can't use it to avoid the penalty.
1816	*/	1821	*/
1817	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1822	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1823	{
1818	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1824	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1819	((op->move_type & tmp->move_slow) &&
1820	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1825	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
1821		1826	{
1822	float diff;
1823
1824	diff = tmp->move_slow_penalty*FABS(op->speed);	1827	float diff = tmp->move_slow_penalty * fabs (op->speed);
1825	if (op->type == PLAYER) {	1828
		1829	if (op->is_player ())
1826	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1830	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
1827	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1831	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
1828	diff /= 4.0;	1832	diff /= 4.0;
1829	}	1833
1830	}
1831	op->speed_left -= diff;	1834	op->speed_left -= diff;
1832	}	1835	}
1833	}	1836	}
1834		1837
1835	/* Basically same logic as above, except now for actual apply. */	1838	/* Basically same logic as above, except now for actual apply. */
1836	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1839	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1837	((op->move_type & tmp->move_on) &&
1838	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1840	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1839		1841	{
1840	move_apply(tmp, op, originator);	1842	move_apply (tmp, op, originator);
		1843
1841	if (was_destroyed (op, tag))	1844	if (op->destroyed ())
1842	return 1;	1845	return 1;
1843		1846
1844	/* what the person/creature stepped onto has moved the object	1847	/* what the person/creature stepped onto has moved the object
1845	* someplace new. Don't process any further - if we did,	1848	* someplace new. Don't process any further - if we did,
1846	* have a feeling strange problems would result.	1849	* have a feeling strange problems would result.
1847	*/	1850	*/
1848	if (op->map != m || op->x != x || op->y != y) return 0;	1851	if (op->map != m || op->x != x || op->y != y)
		1852	return 0;
1849	}	1853	}
1850	}	1854	}
		1855
1851	return 0;	1856	return 0;
1852	}	1857	}
1853		1858
1854	/*	1859	/*
1855	* present_arch(arch, map, x, y) searches for any objects with	1860	* present_arch(arch, map, x, y) searches for any objects with
1856	* a matching archetype at the given map and coordinates.	1861	* a matching archetype at the given map and coordinates.
1857	* The first matching object is returned, or NULL if none.	1862	* The first matching object is returned, or NULL if none.
1858	*/	1863	*/
1859		1864	object *
1860	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1865	present_arch (const archetype *at, maptile *m, int x, int y)
1861	object *tmp;	1866	{
1862	if(m==NULL || out_of_map(m,x,y)) {	1867	if (!m || out_of_map (m, x, y))
		1868	{
1863	LOG(llevError,"Present_arch called outside map.\n");	1869	LOG (llevError, "Present_arch called outside map.\n");
1864	return NULL;	1870	return NULL;
1865	}	1871	}
1866	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1872
1867	if(tmp->arch == at)	1873	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1874	if (tmp->arch->archname == at->archname)
1868	return tmp;	1875	return tmp;
		1876
1869	return NULL;	1877	return NULL;
1870	}	1878	}
1871		1879
1872	/*	1880	/*
1873	* present(type, map, x, y) searches for any objects with	1881	* present(type, map, x, y) searches for any objects with
1874	* a matching type variable at the given map and coordinates.	1882	* a matching type variable at the given map and coordinates.
1875	* The first matching object is returned, or NULL if none.	1883	* The first matching object is returned, or NULL if none.
1876	*/	1884	*/
1877		1885	object *
1878	object *present(unsigned char type,mapstruct *m, int x,int y) {	1886	present (unsigned char type, maptile *m, int x, int y)
1879	object *tmp;	1887	{
1880	if(out_of_map(m,x,y)) {	1888	if (out_of_map (m, x, y))
		1889	{
1881	LOG(llevError,"Present called outside map.\n");	1890	LOG (llevError, "Present called outside map.\n");
1882	return NULL;	1891	return NULL;
1883	}	1892	}
1884	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1893
		1894	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1885	if(tmp->type==type)	1895	if (tmp->type == type)
1886	return tmp;	1896	return tmp;
		1897
1887	return NULL;	1898	return NULL;
1888	}	1899	}
1889		1900
1890	/*	1901	/*
1891	* present_in_ob(type, object) searches for any objects with	1902	* present_in_ob(type, object) searches for any objects with
1892	* a matching type variable in the inventory of the given object.	1903	* a matching type variable in the inventory of the given object.
1893	* The first matching object is returned, or NULL if none.	1904	* The first matching object is returned, or NULL if none.
1894	*/	1905	*/
1895		1906	object *
1896	object *present_in_ob(unsigned char type, const object *op) {	1907	present_in_ob (unsigned char type, const object *op)
1897	object *tmp;	1908	{
1898	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1909	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1899	if(tmp->type==type)	1910	if (tmp->type == type)
1900	return tmp;	1911	return tmp;
		1912
1901	return NULL;	1913	return NULL;
1902	}	1914	}
1903		1915
1904	/*	1916	/*
1905	* present_in_ob (type, str, object) searches for any objects with	1917	* present_in_ob (type, str, object) searches for any objects with
…		…
1913	* str is the string to match against. Note that we match against	1925	* str is the string to match against. Note that we match against
1914	* the object name, not the archetype name. this is so that the	1926	* the object name, not the archetype name. this is so that the
1915	* spell code can use one object type (force), but change it's name	1927	* spell code can use one object type (force), but change it's name
1916	* to be unique.	1928	* to be unique.
1917	*/	1929	*/
1918		1930	object *
1919	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1931	present_in_ob_by_name (int type, const char *str, const object *op)
1920	object *tmp;	1932	{
1921
1922	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1933	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1923	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1934	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1924	return tmp;	1935	return tmp;
1925	}	1936
1926	return NULL;	1937	return 0;
1927	}	1938	}
1928		1939
1929	/*	1940	/*
1930	* present_arch_in_ob(archetype, object) searches for any objects with	1941	* present_arch_in_ob(archetype, object) searches for any objects with
1931	* a matching archetype in the inventory of the given object.	1942	* a matching archetype in the inventory of the given object.
1932	* The first matching object is returned, or NULL if none.	1943	* The first matching object is returned, or NULL if none.
1933	*/	1944	*/
1934		1945	object *
1935	object *present_arch_in_ob(const archetype *at, const object *op) {	1946	present_arch_in_ob (const archetype *at, const object *op)
1936	object *tmp;	1947	{
1937	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1948	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1938	if( tmp->arch == at)	1949	if (tmp->arch->archname == at->archname)
1939	return tmp;	1950	return tmp;
		1951
1940	return NULL;	1952	return NULL;
1941	}	1953	}
1942		1954
1943	/*	1955	/*
1944	* activate recursively a flag on an object inventory	1956	* activate recursively a flag on an object inventory
1945	*/	1957	*/
		1958	void
1946	void flag_inv(object*op, int flag){	1959	flag_inv (object *op, int flag)
1947	object *tmp;	1960	{
1948	if(op->inv)
1949	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1961	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1962	{
1950	SET_FLAG(tmp, flag);	1963	SET_FLAG (tmp, flag);
1951	flag_inv(tmp,flag);	1964	flag_inv (tmp, flag);
1952	}	1965	}
		1966	}
		1967
1953	}/*	1968	/*
1954	* desactivate recursively a flag on an object inventory	1969	* deactivate recursively a flag on an object inventory
1955	*/	1970	*/
		1971	void
1956	void unflag_inv(object*op, int flag){	1972	unflag_inv (object *op, int flag)
1957	object *tmp;	1973	{
1958	if(op->inv)
1959	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1974	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1975	{
1960	CLEAR_FLAG(tmp, flag);	1976	CLEAR_FLAG (tmp, flag);
1961	unflag_inv(tmp,flag);	1977	unflag_inv (tmp, flag);
1962	}	1978	}
1963	}
1964
1965	/*
1966	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1967	* all it's inventory (recursively).
1968	* If checksums are used, a player will get set_cheat called for
1969	* him/her-self and all object carried by a call to this function.
1970	*/
1971
1972	void set_cheat(object *op) {
1973	SET_FLAG(op, FLAG_WAS_WIZ);
1974	flag_inv(op, FLAG_WAS_WIZ);
1975	}	1979	}
1976		1980
1977	/*	1981	/*
1978	* find_free_spot(object, map, x, y, start, stop) will search for	1982	* find_free_spot(object, map, x, y, start, stop) will search for
1979	* a spot at the given map and coordinates which will be able to contain	1983	* a spot at the given map and coordinates which will be able to contain
…		…
1981	* to search (see the freearr_x/y[] definition).	1985	* to search (see the freearr_x/y[] definition).
1982	* It returns a random choice among the alternatives found.	1986	* It returns a random choice among the alternatives found.
1983	* start and stop are where to start relative to the free_arr array (1,9	1987	* start and stop are where to start relative to the free_arr array (1,9
1984	* does all 4 immediate directions). This returns the index into the	1988	* does all 4 immediate directions). This returns the index into the
1985	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1989	* array of the free spot, -1 if no spot available (dir 0 = x,y)
1986	* Note - this only checks to see if there is space for the head of the
1987	* object - if it is a multispace object, this should be called for all
1988	* pieces.
1989	* Note2: This function does correctly handle tiled maps, but does not	1990	* Note: This function does correctly handle tiled maps, but does not
1990	* inform the caller. However, insert_ob_in_map will update as	1991	* inform the caller. However, insert_ob_in_map will update as
1991	* necessary, so the caller shouldn't need to do any special work.	1992	* necessary, so the caller shouldn't need to do any special work.
1992	* Note - updated to take an object instead of archetype - this is necessary	1993	* Note - updated to take an object instead of archetype - this is necessary
1993	* because arch_blocked (now ob_blocked) needs to know the movement type	1994	* because arch_blocked (now ob_blocked) needs to know the movement type
1994	* to know if the space in question will block the object. We can't use	1995	* to know if the space in question will block the object. We can't use
1995	* the archetype because that isn't correct if the monster has been	1996	* the archetype because that isn't correct if the monster has been
1996	* customized, changed states, etc.	1997	* customized, changed states, etc.
1997	*/	1998	*/
1998		1999	int
1999	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2000	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2001	{
		2002	int altern[SIZEOFFREE];
2000	int i,index=0, flag;	2003	int index = 0, flag;
2001	static int altern[SIZEOFFREE];
2002		2004
2003	for(i=start;i<stop;i++) {	2005	for (int i = start; i < stop; i++)
2004	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2006	{
2005	if(!flag)	2007	mapxy pos (m, x, y); pos.move (i);
		2008
		2009	if (!pos.normalise ())
		2010	continue;
		2011
		2012	mapspace &ms = *pos;
		2013
		2014	if (ms.flags () & P_IS_ALIVE)
		2015	continue;
		2016
		2017	/* However, often
		2018	* ob doesn't have any move type (when used to place exits)
		2019	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2020	*/
		2021	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2022	{
2006	altern[index++]=i;	2023	altern [index++] = i;
		2024	continue;
		2025	}
2007		2026
2008	/* Basically, if we find a wall on a space, we cut down the search size.	2027	/* Basically, if we find a wall on a space, we cut down the search size.
2009	* In this way, we won't return spaces that are on another side of a wall.	2028	* In this way, we won't return spaces that are on another side of a wall.
2010	* This mostly work, but it cuts down the search size in all directions -	2029	* This mostly work, but it cuts down the search size in all directions -
2011	* if the space being examined only has a wall to the north and empty	2030	* if the space being examined only has a wall to the north and empty
2012	* spaces in all the other directions, this will reduce the search space	2031	* spaces in all the other directions, this will reduce the search space
2013	* to only the spaces immediately surrounding the target area, and	2032	* to only the spaces immediately surrounding the target area, and
2014	* won't look 2 spaces south of the target space.	2033	* won't look 2 spaces south of the target space.
2015	*/	2034	*/
2016	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2035	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2036	{
2017	stop=maxfree[i];	2037	stop = maxfree[i];
2018	}	2038	continue;
2019	if(!index) return -1;	2039	}
2020	return altern[RANDOM()%index];
2021	}
2022		2040
		2041	/* Note it is intentional that we check ob - the movement type of the
		2042	* head of the object should correspond for the entire object.
		2043	*/
		2044	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2045	continue;
		2046
		2047	if (ob->blocked (pos.m, pos.x, pos.y))
		2048	continue;
		2049
		2050	altern [index++] = i;
		2051	}
		2052
		2053	if (!index)
		2054	return -1;
		2055
		2056	return altern [rndm (index)];
		2057	}
		2058
2023	/*	2059	/*
2024	* find_first_free_spot(archetype, mapstruct, x, y) works like	2060	* find_first_free_spot(archetype, maptile, x, y) works like
2025	* find_free_spot(), but it will search max number of squares.	2061	* find_free_spot(), but it will search max number of squares.
2026	* But it will return the first available spot, not a random choice.	2062	* But it will return the first available spot, not a random choice.
2027	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2063	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2028	*/	2064	*/
2029		2065	int
2030	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2066	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2031	int i;	2067	{
2032	for(i=0;i<SIZEOFFREE;i++) {	2068	for (int i = 0; i < SIZEOFFREE; i++)
2033	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2069	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2034	return i;	2070	return i;
2035	}	2071
2036	return -1;	2072	return -1;
2037	}	2073	}
2038		2074
2039	/*	2075	/*
2040	* The function permute(arr, begin, end) randomly reorders the array	2076	* The function permute(arr, begin, end) randomly reorders the array
2041	* arr[begin..end-1].	2077	* arr[begin..end-1].
		2078	* now uses a fisher-yates shuffle, old permute was broken
2042	*/	2079	*/
		2080	static void
2043	static void permute(int *arr, int begin, int end)	2081	permute (int *arr, int begin, int end)
2044	{	2082	{
2045	int i, j, tmp, len;	2083	arr += begin;
		2084	end -= begin;
2046		2085
2047	len = end-begin;	2086	while (--end)
2048	for(i = begin; i < end; i++)	2087	swap (arr [end], arr [rndm (end + 1)]);
2049	{
2050	j = begin+RANDOM()%len;
2051
2052	tmp = arr[i];
2053	arr[i] = arr[j];
2054	arr[j] = tmp;
2055	}
2056	}	2088	}
2057		2089
2058	/* new function to make monster searching more efficient, and effective!	2090	/* new function to make monster searching more efficient, and effective!
2059	* This basically returns a randomized array (in the passed pointer) of	2091	* This basically returns a randomized array (in the passed pointer) of
2060	* the spaces to find monsters. In this way, it won't always look for	2092	* the spaces to find monsters. In this way, it won't always look for
2061	* monsters to the north first. However, the size of the array passed	2093	* monsters to the north first. However, the size of the array passed
2062	* covers all the spaces, so within that size, all the spaces within	2094	* covers all the spaces, so within that size, all the spaces within
2063	* the 3x3 area will be searched, just not in a predictable order.	2095	* the 3x3 area will be searched, just not in a predictable order.
2064	*/	2096	*/
		2097	void
2065	void get_search_arr(int *search_arr)	2098	get_search_arr (int *search_arr)
2066	{	2099	{
2067	int i;	2100	int i;
2068		2101
2069	for(i = 0; i < SIZEOFFREE; i++)	2102	for (i = 0; i < SIZEOFFREE; i++)
2070	{
2071	search_arr[i] = i;	2103	search_arr[i] = i;
2072	}
2073		2104
2074	permute(search_arr, 1, SIZEOFFREE1+1);	2105	permute (search_arr, 1, SIZEOFFREE1 + 1);
2075	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2106	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2076	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2107	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2077	}	2108	}
2078		2109
2079	/*	2110	/*
2080	* find_dir(map, x, y, exclude) will search some close squares in the	2111	* find_dir(map, x, y, exclude) will search some close squares in the
2081	* given map at the given coordinates for live objects.	2112	* given map at the given coordinates for live objects.
…		…
2086	* Perhaps incorrectly, but I'm making the assumption that exclude	2117	* Perhaps incorrectly, but I'm making the assumption that exclude
2087	* is actually want is going to try and move there. We need this info	2118	* is actually want is going to try and move there. We need this info
2088	* because we have to know what movement the thing looking to move	2119	* because we have to know what movement the thing looking to move
2089	* there is capable of.	2120	* there is capable of.
2090	*/	2121	*/
2091		2122	int
2092	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2123	find_dir (maptile *m, int x, int y, object *exclude)
		2124	{
2093	int i,max=SIZEOFFREE, mflags;	2125	int max = SIZEOFFREE, mflags;
2094	sint16 nx, ny;
2095	object *tmp;
2096	mapstruct *mp;
2097	MoveType blocked, move_type;	2126	MoveType move_type;
2098		2127
2099	if (exclude && exclude->head) {	2128	if (exclude && exclude->head_ () != exclude)
		2129	{
2100	exclude = exclude->head;	2130	exclude = exclude->head;
2101	move_type = exclude->move_type;	2131	move_type = exclude->move_type;
2102	} else {	2132	}
		2133	else
		2134	{
2103	/* If we don't have anything, presume it can use all movement types. */	2135	/* If we don't have anything, presume it can use all movement types. */
2104	move_type=MOVE_ALL;	2136	move_type = MOVE_ALL;
		2137	}
		2138
		2139	for (int i = 1; i < max; i++)
2105	}	2140	{
		2141	mapxy pos (m, x, y);
		2142	pos.move (i);
2106		2143
2107	for(i=1;i<max;i++) {	2144	if (!pos.normalise ())
2108	mp = m;
2109	nx = x + freearr_x[i];	2145	max = maxfree[i];
2110	ny = y + freearr_y[i];	2146	else
		2147	{
		2148	mapspace &ms = *pos;
2111		2149
2112	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2150	if ((move_type & ms.move_block) == move_type)
2113	if (mflags & P_OUT_OF_MAP) {
2114	max = maxfree[i];	2151	max = maxfree [i];
2115	} else {
2116	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2117
2118	if ((move_type & blocked) == move_type) {
2119	max=maxfree[i];
2120	} else if (mflags & P_IS_ALIVE) {	2152	else if (ms.flags () & P_IS_ALIVE)
2121	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2153	{
2122	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2154	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2155	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2123	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2156	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2124	break;
2125	}
2126	}
2127	if(tmp) {
2128	return freedir[i];	2157	return freedir [i];
2129	}
2130	}	2158	}
2131	}	2159	}
2132	}	2160	}
		2161
2133	return 0;	2162	return 0;
2134	}	2163	}
2135		2164
2136	/*	2165	/*
2137	* distance(object 1, object 2) will return the square of the	2166	* distance(object 1, object 2) will return the square of the
2138	* distance between the two given objects.	2167	* distance between the two given objects.
2139	*/	2168	*/
2140		2169	int
2141	int distance(const object *ob1, const object *ob2) {	2170	distance (const object *ob1, const object *ob2)
2142	int i;	2171	{
2143	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2172	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2144	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2145	return i;
2146	}	2173	}
2147		2174
2148	/*	2175	/*
2149	* find_dir_2(delta-x,delta-y) will return a direction in which	2176	* find_dir_2(delta-x,delta-y) will return a direction in which
2150	* an object which has subtracted the x and y coordinates of another	2177	* an object which has subtracted the x and y coordinates of another
2151	* object, needs to travel toward it.	2178	* object, needs to travel toward it.
2152	*/	2179	*/
2153		2180	int
2154	int find_dir_2(int x, int y) {	2181	find_dir_2 (int x, int y)
		2182	{
2155	int q;	2183	int q;
2156		2184
2157	if(y)	2185	if (y)
2158	q=x*100/y;	2186	q = x * 100 / y;
2159	else if (x)	2187	else if (x)
2160	q= -300*x;	2188	q = -300 * x;
2161	else	2189	else
2162	return 0;	2190	return 0;
2163		2191
2164	if(y>0) {	2192	if (y > 0)
		2193	{
2165	if(q < -242)	2194	if (q < -242)
2166	return 3 ;	2195	return 3;
2167	if (q < -41)	2196	if (q < -41)
2168	return 2 ;	2197	return 2;
2169	if (q < 41)	2198	if (q < 41)
2170	return 1 ;	2199	return 1;
2171	if (q < 242)	2200	if (q < 242)
2172	return 8 ;	2201	return 8;
2173	return 7 ;	2202	return 7;
2174	}	2203	}
2175		2204
2176	if (q < -242)	2205	if (q < -242)
2177	return 7 ;	2206	return 7;
2178	if (q < -41)	2207	if (q < -41)
2179	return 6 ;	2208	return 6;
2180	if (q < 41)	2209	if (q < 41)
2181	return 5 ;	2210	return 5;
2182	if (q < 242)	2211	if (q < 242)
2183	return 4 ;	2212	return 4;
2184		2213
2185	return 3 ;	2214	return 3;
2186	}
2187
2188	/*
2189	* absdir(int): Returns a number between 1 and 8, which represent
2190	* the "absolute" direction of a number (it actually takes care of
2191	* "overflow" in previous calculations of a direction).
2192	*/
2193
2194	int absdir(int d) {
2195	while(d<1) d+=8;
2196	while(d>8) d-=8;
2197	return d;
2198	}	2215	}
2199		2216
2200	/*	2217	/*
2201	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2218	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2202	* between two directions (which are expected to be absolute (see absdir())	2219	* between two directions (which are expected to be absolute (see absdir())
2203	*/	2220	*/
2204		2221	int
2205	int dirdiff(int dir1, int dir2) {	2222	dirdiff (int dir1, int dir2)
		2223	{
2206	int d;	2224	int d;
		2225
2207	d = abs(dir1 - dir2);	2226	d = abs (dir1 - dir2);
2208	if(d>4)	2227	if (d > 4)
2209	d = 8 - d;	2228	d = 8 - d;
		2229
2210	return d;	2230	return d;
2211	}	2231	}
2212		2232
2213	/* peterm:	2233	/* peterm:
2214	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2234	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2217	* This basically means that if direction is 15, then it could either go	2237	* This basically means that if direction is 15, then it could either go
2218	* direction 4, 14, or 16 to get back to where we are.	2238	* direction 4, 14, or 16 to get back to where we are.
2219	* Moved from spell_util.c to object.c with the other related direction	2239	* Moved from spell_util.c to object.c with the other related direction
2220	* functions.	2240	* functions.
2221	*/	2241	*/
2222
2223	int reduction_dir[SIZEOFFREE][3] = {	2242	static const int reduction_dir[SIZEOFFREE][3] = {
2224	{0,0,0}, /* 0 */	2243	{0, 0, 0}, /* 0 */
2225	{0,0,0}, /* 1 */	2244	{0, 0, 0}, /* 1 */
2226	{0,0,0}, /* 2 */	2245	{0, 0, 0}, /* 2 */
2227	{0,0,0}, /* 3 */	2246	{0, 0, 0}, /* 3 */
2228	{0,0,0}, /* 4 */	2247	{0, 0, 0}, /* 4 */
2229	{0,0,0}, /* 5 */	2248	{0, 0, 0}, /* 5 */
2230	{0,0,0}, /* 6 */	2249	{0, 0, 0}, /* 6 */
2231	{0,0,0}, /* 7 */	2250	{0, 0, 0}, /* 7 */
2232	{0,0,0}, /* 8 */	2251	{0, 0, 0}, /* 8 */
2233	{8,1,2}, /* 9 */	2252	{8, 1, 2}, /* 9 */
2234	{1,2,-1}, /* 10 */	2253	{1, 2, -1}, /* 10 */
2235	{2,10,12}, /* 11 */	2254	{2, 10, 12}, /* 11 */
2236	{2,3,-1}, /* 12 */	2255	{2, 3, -1}, /* 12 */
2237	{2,3,4}, /* 13 */	2256	{2, 3, 4}, /* 13 */
2238	{3,4,-1}, /* 14 */	2257	{3, 4, -1}, /* 14 */
2239	{4,14,16}, /* 15 */	2258	{4, 14, 16}, /* 15 */
2240	{5,4,-1}, /* 16 */	2259	{5, 4, -1}, /* 16 */
2241	{4,5,6}, /* 17 */	2260	{4, 5, 6}, /* 17 */
2242	{6,5,-1}, /* 18 */	2261	{6, 5, -1}, /* 18 */
2243	{6,20,18}, /* 19 */	2262	{6, 20, 18}, /* 19 */
2244	{7,6,-1}, /* 20 */	2263	{7, 6, -1}, /* 20 */
2245	{6,7,8}, /* 21 */	2264	{6, 7, 8}, /* 21 */
2246	{7,8,-1}, /* 22 */	2265	{7, 8, -1}, /* 22 */
2247	{8,22,24}, /* 23 */	2266	{8, 22, 24}, /* 23 */
2248	{8,1,-1}, /* 24 */	2267	{8, 1, -1}, /* 24 */
2249	{24,9,10}, /* 25 */	2268	{24, 9, 10}, /* 25 */
2250	{9,10,-1}, /* 26 */	2269	{9, 10, -1}, /* 26 */
2251	{10,11,-1}, /* 27 */	2270	{10, 11, -1}, /* 27 */
2252	{27,11,29}, /* 28 */	2271	{27, 11, 29}, /* 28 */
2253	{11,12,-1}, /* 29 */	2272	{11, 12, -1}, /* 29 */
2254	{12,13,-1}, /* 30 */	2273	{12, 13, -1}, /* 30 */
2255	{12,13,14}, /* 31 */	2274	{12, 13, 14}, /* 31 */
2256	{13,14,-1}, /* 32 */	2275	{13, 14, -1}, /* 32 */
2257	{14,15,-1}, /* 33 */	2276	{14, 15, -1}, /* 33 */
2258	{33,15,35}, /* 34 */	2277	{33, 15, 35}, /* 34 */
2259	{16,15,-1}, /* 35 */	2278	{16, 15, -1}, /* 35 */
2260	{17,16,-1}, /* 36 */	2279	{17, 16, -1}, /* 36 */
2261	{18,17,16}, /* 37 */	2280	{18, 17, 16}, /* 37 */
2262	{18,17,-1}, /* 38 */	2281	{18, 17, -1}, /* 38 */
2263	{18,19,-1}, /* 39 */	2282	{18, 19, -1}, /* 39 */
2264	{41,19,39}, /* 40 */	2283	{41, 19, 39}, /* 40 */
2265	{19,20,-1}, /* 41 */	2284	{19, 20, -1}, /* 41 */
2266	{20,21,-1}, /* 42 */	2285	{20, 21, -1}, /* 42 */
2267	{20,21,22}, /* 43 */	2286	{20, 21, 22}, /* 43 */
2268	{21,22,-1}, /* 44 */	2287	{21, 22, -1}, /* 44 */
2269	{23,22,-1}, /* 45 */	2288	{23, 22, -1}, /* 45 */
2270	{45,47,23}, /* 46 */	2289	{45, 47, 23}, /* 46 */
2271	{23,24,-1}, /* 47 */	2290	{23, 24, -1}, /* 47 */
2272	{24,9,-1}}; /* 48 */	2291	{24, 9, -1}
		2292	}; /* 48 */
2273		2293
2274	/* Recursive routine to step back and see if we can	2294	/* Recursive routine to step back and see if we can
2275	* find a path to that monster that we found. If not,	2295	* find a path to that monster that we found. If not,
2276	* we don't bother going toward it. Returns 1 if we	2296	* we don't bother going toward it. Returns 1 if we
2277	* can see a direct way to get it	2297	* can see a direct way to get it
2278	* Modified to be map tile aware -.MSW	2298	* Modified to be map tile aware -.MSW
2279	*/	2299	*/
2280		2300	int
2281
2282	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2301	can_see_monsterP (maptile *m, int x, int y, int dir)
		2302	{
2283	sint16 dx, dy;	2303	sint16 dx, dy;
2284	int mflags;	2304	int mflags;
2285		2305
		2306	if (dir < 0)
2286	if(dir<0) return 0; /* exit condition: invalid direction */	2307	return 0; /* exit condition: invalid direction */
2287		2308
2288	dx = x + freearr_x[dir];	2309	dx = x + freearr_x[dir];
2289	dy = y + freearr_y[dir];	2310	dy = y + freearr_y[dir];
2290		2311
2291	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2312	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2292		2313
2293	/* This functional arguably was incorrect before - it was	2314	/* This functional arguably was incorrect before - it was
2294	* checking for P_WALL - that was basically seeing if	2315	* checking for P_WALL - that was basically seeing if
2295	* we could move to the monster - this is being more	2316	* we could move to the monster - this is being more
2296	* literal on if we can see it. To know if we can actually	2317	* literal on if we can see it. To know if we can actually
2297	* move to the monster, we'd need the monster passed in or	2318	* move to the monster, we'd need the monster passed in or
2298	* at least its move type.	2319	* at least its move type.
2299	*/	2320	*/
2300	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2321	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2322	return 0;
2301		2323
2302	/* yes, can see. */	2324	/* yes, can see. */
2303	if(dir < 9) return 1;	2325	if (dir < 9)
		2326	return 1;
		2327
2304	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2328	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2305	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2329	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2306	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2330	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2307	}	2331	}
2308		2332
2309
2310
2311	/*	2333	/*
2312	* can_pick(picker, item): finds out if an object is possible to be	2334	* can_pick(picker, item): finds out if an object is possible to be
2313	* picked up by the picker. Returnes 1 if it can be	2335	* picked up by the picker. Returnes 1 if it can be
2314	* picked up, otherwise 0.	2336	* picked up, otherwise 0.
2315	*	2337	*
2316	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2338	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2317	* core dumps if they do.	2339	* core dumps if they do.
2318	*	2340	*
2319	* Add a check so we can't pick up invisible objects (0.93.8)	2341	* Add a check so we can't pick up invisible objects (0.93.8)
2320	*/	2342	*/
2321		2343	int
2322	int can_pick(const object *who, const object *item) {	2344	can_pick (const object *who, const object *item)
		2345	{
2323	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2346	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2324	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2347	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2325	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2348	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2326	(who->type==PLAYER||item->weight<who->weight/3));
2327	}	2349	}
2328
2329		2350
2330	/*	2351	/*
2331	* create clone from object to another	2352	* create clone from object to another
2332	*/	2353	*/
2333	object *object_create_clone (object *asrc) {	2354	object *
2334	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2355	object::deep_clone ()
		2356	{
		2357	assert (("deep_clone called on non-head object", is_head ()));
2335		2358
2336	if(!asrc) return NULL;	2359	object *dst = clone ();
2337	src = asrc;
2338	if(src->head)
2339	src = src->head;
2340		2360
2341	prev = NULL;	2361	object *prev = dst;
2342	for(part = src; part; part = part->more) {	2362	for (object *part = this->more; part; part = part->more)
2343	tmp = get_object();	2363	{
2344	copy_object(part,tmp);	2364	object *tmp = part->clone ();
2345	tmp->x -= src->x;
2346	tmp->y -= src->y;
2347	if(!part->head) {
2348	dst = tmp;
2349	tmp->head = NULL;
2350	} else {
2351	tmp->head = dst;	2365	tmp->head = dst;
2352	}
2353	tmp->more = NULL;
2354	if(prev)
2355	prev->more = tmp;	2366	prev->more = tmp;
2356	prev = tmp;	2367	prev = tmp;
2357	}	2368	}
2358	/*** copy inventory ***/	2369
2359	for(item = src->inv; item; item = item->below) {	2370	for (object *item = inv; item; item = item->below)
2360	(void) insert_ob_in_ob(object_create_clone(item),dst);	2371	insert_ob_in_ob (item->deep_clone (), dst);
2361	}
2362		2372
2363	return dst;	2373	return dst;
2364	}
2365
2366	/* return true if the object was destroyed, 0 otherwise */
2367	int was_destroyed (const object *op, tag_t old_tag)
2368	{
2369	/* checking for FLAG_FREED isn't necessary, but makes this function more
2370	* robust */
2371	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2372	}
2373
2374	/* GROS - Creates an object using a string representing its content. */
2375	/* Basically, we save the content of the string to a temp file, then call */
2376	/* load_object on it. I admit it is a highly inefficient way to make things, */
2377	/* but it was simple to make and allows reusing the load_object function. */
2378	/* Remember not to use load_object_str in a time-critical situation. */
2379	/* Also remember that multiparts objects are not supported for now. */
2380
2381	object* load_object_str(const char *obstr)
2382	{
2383	object *op;
2384	char filename[MAX_BUF];
2385	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2386
2387	FILE *tempfile=fopen(filename,"w");
2388	if (tempfile == NULL)
2389	{
2390	LOG(llevError,"Error - Unable to access load object temp file\n");
2391	return NULL;
2392	};
2393	fprintf(tempfile,obstr);
2394	fclose(tempfile);
2395
2396	op=get_object();
2397
2398	object_thawer thawer (filename);
2399
2400	if (thawer)
2401	load_object(thawer,op,0);
2402
2403	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2404	CLEAR_FLAG(op,FLAG_REMOVED);
2405
2406	return op;
2407	}	2374	}
2408		2375
2409	/* This returns the first object in who's inventory that	2376	/* This returns the first object in who's inventory that
2410	* has the same type and subtype match.	2377	* has the same type and subtype match.
2411	* returns NULL if no match.	2378	* returns NULL if no match.
2412	*/	2379	*/
		2380	object *
2413	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2381	find_obj_by_type_subtype (const object *who, int type, int subtype)
2414	{	2382	{
2415	object *tmp;
2416
2417	for (tmp=who->inv; tmp; tmp=tmp->below)	2383	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2418	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2384	if (tmp->type == type && tmp->subtype == subtype)
		2385	return tmp;
2419		2386
2420	return NULL;	2387	return 0;
2421	}	2388	}
2422		2389
2423	/* If ob has a field named key, return the link from the list,	2390	shstr_tmp
2424	* otherwise return NULL.	2391	object::kv_get (shstr_tmp key) const
2425	*	2392	{
2426	* key must be a passed in shared string - otherwise, this won't	2393	for (key_value *kv = key_values; kv; kv = kv->next)
2427	* do the desired thing.	2394	if (kv->key == key)
2428	*/	2395	return kv->value;
2429	key_value * get_ob_key_link(const object * ob, const char * key) {	2396
2430	key_value * link;	2397	return shstr ();
		2398	}
		2399
		2400	void
		2401	object::kv_set (shstr_tmp key, shstr_tmp value)
		2402	{
		2403	for (key_value *kv = key_values; kv; kv = kv->next)
		2404	if (kv->key == key)
		2405	{
		2406	kv->value = value;
		2407	return;
		2408	}
		2409
		2410	key_value *kv = new key_value;
		2411
		2412	kv->next = key_values;
		2413	kv->key = key;
		2414	kv->value = value;
		2415
		2416	key_values = kv;
		2417	}
		2418
		2419	void
		2420	object::kv_del (shstr_tmp key)
		2421	{
		2422	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2423	if ((*kvp)->key == key)
		2424	{
		2425	key_value *kv = *kvp;
		2426	*kvp = (*kvp)->next;
		2427	delete kv;
		2428	return;
		2429	}
		2430	}
		2431
		2432	object::depth_iterator::depth_iterator (object *container)
		2433	: iterator_base (container)
		2434	{
		2435	while (item->inv)
		2436	item = item->inv;
		2437	}
		2438
		2439	void
		2440	object::depth_iterator::next ()
		2441	{
		2442	if (item->below)
2431		2443	{
2432	for (link = ob->key_values; link != NULL; link = link->next) {	2444	item = item->below;
2433	if (link->key == key) {	2445
2434	return link;	2446	while (item->inv)
		2447	item = item->inv;
		2448	}
		2449	else
		2450	item = item->env;
		2451	}
		2452
		2453	const char *
		2454	object::flag_desc (char *desc, int len) const
		2455	{
		2456	char *p = desc;
		2457	bool first = true;
		2458
		2459	*p = 0;
		2460
		2461	for (int i = 0; i < NUM_FLAGS; i++)
		2462	{
		2463	if (len <= 10) // magic constant!
		2464	{
		2465	snprintf (p, len, ",...");
		2466	break;
2435	}	2467	}
2436	}
2437
2438	return NULL;
2439	}
2440		2468
2441	/*	2469	if (flag [i])
2442	* Returns the value of op has an extra_field for key, or NULL.
2443	*
2444	* The argument doesn't need to be a shared string.
2445	*
2446	* The returned string is shared.
2447	*/
2448	const char * get_ob_key_value(const object * op, const char * const key) {
2449	key_value * link;
2450	const char * canonical_key;
2451
2452	canonical_key = shstr::find (key);
2453
2454	if (canonical_key == NULL) {
2455	/* 1. There being a field named key on any object
2456	* implies there'd be a shared string to find.
2457	* 2. Since there isn't, no object has this field.
2458	* 3. Therefore, *this* object doesn't have this field.
2459	*/	2470	{
2460	return NULL;	2471	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2461	}	2472	len -= cnt;
2462		2473	p += cnt;
2463	/* This is copied from get_ob_key_link() above -	2474	first = false;
2464	* only 4 lines, and saves the function call overhead.
2465	*/
2466	for (link = op->key_values; link != NULL; link = link->next) {
2467	if (link->key == canonical_key) {
2468	return link->value;
2469	}	2475	}
2470	}	2476	}
		2477
		2478	return desc;
		2479	}
		2480
		2481	// return a suitable string describing an object in enough detail to find it
		2482	const char *
		2483	object::debug_desc (char *info) const
		2484	{
		2485	char flagdesc[512];
		2486	char info2[256 * 4];
		2487	char *p = info;
		2488
		2489	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2490	count,
		2491	uuid.c_str (),
		2492	&name,
		2493	title ? ",title:\"" : "",
		2494	title ? (const char *)title : "",
		2495	title ? "\"" : "",
		2496	flag_desc (flagdesc, 512), type);
		2497
		2498	if (!flag[FLAG_REMOVED] && env)
		2499	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2500
		2501	if (map)
		2502	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2503
		2504	return info;
		2505	}
		2506
		2507	const char *
		2508	object::debug_desc () const
		2509	{
		2510	static char info[3][256 * 4];
		2511	static int info_idx;
		2512
		2513	return debug_desc (info [++info_idx % 3]);
		2514	}
		2515
		2516	struct region *
		2517	object::region () const
		2518	{
		2519	return map ? map->region (x, y)
		2520	: region::default_region ();
		2521	}
		2522
		2523	const materialtype_t *
		2524	object::dominant_material () const
		2525	{
		2526	if (materialtype_t *mt = name_to_material (materialname))
		2527	return mt;
		2528
		2529	return name_to_material (shstr_unknown);
		2530	}
		2531
		2532	void
		2533	object::open_container (object *new_container)
		2534	{
		2535	if (container == new_container)
2471	return NULL;	2536	return;
2472	}
2473		2537
		2538	object *old_container = container;
2474		2539
2475	/*	2540	if (old_container)
2476	* Updates the canonical_key in op to value.
2477	*
2478	* canonical_key is a shared string (value doesn't have to be).
2479	*
2480	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2481	* keys.
2482	*
2483	* Returns TRUE on success.
2484	*/
2485	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {
2486	key_value * field = NULL, *last=NULL;
2487		2541	{
2488	for (field=op->key_values; field != NULL; field=field->next) {	2542	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2489	if (field->key != canonical_key) {	2543	return;
2490	last = field;	2544
2491	continue;	2545	#if 0
		2546	// remove the "Close old_container" object.
		2547	if (object *closer = old_container->inv)
		2548	if (closer->type == CLOSE_CON)
		2549	closer->destroy ();
		2550	#endif
		2551
		2552	// make sure the container is available
		2553	esrv_send_item (this, old_container);
		2554
		2555	old_container->flag [FLAG_APPLIED] = false;
		2556	container = 0;
		2557
		2558	// client needs item update to make it work, client bug requires this to be separate
		2559	esrv_update_item (UPD_FLAGS, this, old_container);
		2560
		2561	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2562	play_sound (sound_find ("chest_close"));
		2563	}
		2564
		2565	if (new_container)
		2566	{
		2567	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2568	return;
		2569
		2570	// TODO: this does not seem to serve any purpose anymore?
		2571	#if 0
		2572	// insert the "Close Container" object.
		2573	if (archetype *closer = new_container->other_arch)
		2574	{
		2575	object *closer = arch_to_object (new_container->other_arch);
		2576	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2577	new_container->insert (closer);
2492	}	2578	}
		2579	#endif
		2580
		2581	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2582
		2583	// make sure the container is available, client bug requires this to be separate
		2584	esrv_send_item (this, new_container);
		2585
		2586	new_container->flag [FLAG_APPLIED] = true;
		2587	container = new_container;
		2588
		2589	// client needs flag change
		2590	esrv_update_item (UPD_FLAGS, this, new_container);
		2591	esrv_send_inventory (this, new_container);
		2592	play_sound (sound_find ("chest_open"));
2493		2593	}
2494	if (value)	2594	// else if (!old_container->env && contr && contr->ns)
2495	field->value = value;	2595	// contr->ns->floorbox_reset ();
2496	else {	2596	}
2497	/* Basically, if the archetype has this key set,
2498	* we need to store the null value so when we save
2499	* it, we save the empty value so that when we load,
2500	* we get this value back again.
2501	*/
2502	if (get_ob_key_link (&op->arch->clone, canonical_key))
2503	field->value = 0;
2504	else
2505	{
2506	if (last) last->next = field->next;
2507	else op->key_values = field->next;
2508		2597
2509	delete field;	2598	object *
2510	}	2599	object::force_find (shstr_tmp name)
2511	}	2600	{
2512	return TRUE;	2601	/* cycle through his inventory to look for the MARK we want to
2513	}	2602	* place
2514	/* IF we get here, key doesn't exist */	2603	*/
		2604	for (object *tmp = inv; tmp; tmp = tmp->below)
		2605	if (tmp->type == FORCE && tmp->slaying == name)
		2606	return splay (tmp);
2515		2607
2516	/* No field, we'll have to add it. */	2608	return 0;
		2609	}
		2610
		2611	//-GPL
		2612
		2613	void
		2614	object::force_set_timer (int duration)
		2615	{
		2616	this->duration = 1;
		2617	this->speed_left = -1.f;
		2618
		2619	this->set_speed (duration ? 1.f / duration : 0.f);
		2620	}
		2621
		2622	object *
		2623	object::force_add (shstr_tmp name, int duration)
		2624	{
		2625	if (object *force = force_find (name))
		2626	force->destroy ();
		2627
		2628	object *force = get_archetype (FORCE_NAME);
		2629
		2630	force->slaying = name;
		2631	force->force_set_timer (duration);
		2632	force->flag [FLAG_APPLIED] = true;
		2633
		2634	return insert (force);
		2635	}
		2636
		2637	void
		2638	object::play_sound (faceidx sound) const
		2639	{
		2640	if (!sound)
		2641	return;
		2642
		2643	if (is_on_map ())
		2644	map->play_sound (sound, x, y);
		2645	else if (object *pl = in_player ())
		2646	pl->contr->play_sound (sound);
		2647	}
		2648
		2649	void
		2650	object::say_msg (const char *msg) const
		2651	{
		2652	if (is_on_map ())
		2653	map->say_msg (msg, x, y);
		2654	else if (object *pl = in_player ())
		2655	pl->contr->play_sound (sound);
		2656	}
		2657
		2658	void
		2659	object::make_noise ()
		2660	{
		2661	// we do not model noise in the map, so instead put
		2662	// a temporary light into the noise source
		2663	// could use the map instead, but that's less reliable for our
		2664	// goal, which is to make invisibility a bit harder to exploit
		2665
		2666	// currently only works sensibly for players
		2667	if (!is_player ())
		2668	return;
		2669
		2670	// find old force, or create new one
		2671	object *force = force_find (shstr_noise_force);
		2672
		2673	if (force)
		2674	force->speed_left = -1.f; // patch old speed up
		2675	else
2517		2676	{
2518	if (!add_key) {	2677	force = archetype::get (shstr_noise_force);
2519	return FALSE;	2678
2520	}	2679	force->slaying = shstr_noise_force;
2521	/* There isn't any good reason to store a null	2680	force->stats.food = 1;
2522	* value in the key/value list. If the archetype has	2681	force->speed_left = -1.f;
2523	* this key, then we should also have it, so shouldn't	2682
2524	* be here. If user wants to store empty strings,	2683	force->set_speed (1.f / 4.f);
2525	* should pass in ""	2684	force->flag [FLAG_IS_USED_UP] = true;
2526	*/	2685	force->flag [FLAG_APPLIED] = true;
2527	if (value == NULL) return TRUE;	2686
		2687	insert (force);
2528		2688	}
2529	field = new key_value;
2530
2531	field->key = canonical_key;
2532	field->value = value;
2533	/* Usual prepend-addition. */
2534	field->next = op->key_values;
2535	op->key_values = field;
2536
2537	return TRUE;
2538	}	2689	}
2539		2690
2540	/*
2541	* Updates the key in op to value.
2542	*
2543	* If add_key is FALSE, this will only update existing keys,
2544	* and not add new ones.
2545	* In general, should be little reason FALSE is ever passed in for add_key
2546	*
2547	* Returns TRUE on success.
2548	*/
2549	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)
2550	{
2551	shstr key_ (key);
2552	return set_ob_key_value_s (op, key_, value, add_key);
2553	}

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