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Comparing deliantra/server/common/object.C (file contents):
Revision 1.40 by root, Thu Sep 14 00:07:15 2006 UTC vs.
Revision 1.327 by root, Fri Apr 16 02:32:25 2010 UTC

1
2	/*	1	/*
3	CrossFire, A Multiplayer game for X-windows	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
4		3	*
		4	* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001 Mark Wedel & Crossfire Development Team
6	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
7		7	*
8	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
9	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
10	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
11	(at your option) any later version.	11	* option) any later version.
12		12	*
13	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,
14	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	GNU General Public License for more details.	16	* GNU General Public License for more details.
17		17	*
18	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
19	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
20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
21		21	*
22	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>
23	*/	23	*/
24		24
25	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
26	sub/add_weight will transcend the environment updating the carrying
27	variable. */
28	#include <global.h>	25	#include <global.h>
29	#include <stdio.h>	26	#include <stdio.h>
30	#include <sys/types.h>	27	#include <sys/types.h>
31	#include <sys/uio.h>	28	#include <sys/uio.h>
32	#include <object.h>	29	#include <object.h>
33	#include <funcpoint.h>	30	#include <sproto.h>
34	#include <loader.h>
35		31
36	int nrofallocobjects = 0;	32	#include <bitset>
37	static UUID uuid;	33
		34	UUID UUID::cur;
		35	static uint64_t seq_next_save;
38	const uint64 UUID_SKIP = 1<<19;	36	static const uint64 UUID_GAP = 1<<19;
		37	uint32_t mapspace::smellcount = 10000;
39		38
40	object *objects; /* Pointer to the list of used objects */	39	objectvec objects;
41	object *active_objects; /* List of active objects that need to be processed */	40	activevec actives;
42		41
43	short freearr_x[SIZEOFFREE] = { 0, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,	42	freelist_item *object::freelist;
		43	uint32_t object::object_count;
		44	uint32_t object::free_count;
		45	uint32_t object::create_count;
		46	uint32_t object::destroy_count;
		47
		48	//+GPL
		49
		50	short freearr_x[SIZEOFFREE] = {
		51	0,
		52	0, 1, 1, 1, 0, -1, -1, -1,
		53	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
44	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1	54	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
45	};	55	};
46	short freearr_y[SIZEOFFREE] = { 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,	56	short freearr_y[SIZEOFFREE] = {
		57	0,
		58	-1, -1, 0, 1, 1, 1, 0, -1,
		59	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
47	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3	60	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
48	};
49	int maxfree[SIZEOFFREE] = { 0, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45,
50	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
51	};	61	};
52	int freedir[SIZEOFFREE] = {	62	int freedir[SIZEOFFREE] = {
53	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,	63	0,
		64	1, 2, 3, 4, 5, 6, 7, 8,
		65	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
54	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8	66	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
55	};	67	};
56		68
		69	static int maxfree[SIZEOFFREE] = {
		70	0,
		71	9, 10, 13, 14, 17, 18, 21, 22,
		72	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		73	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		74	};
		75
57	static void	76	static void
58	write_uuid (void)	77	write_uuid (uval64 skip, bool sync)
59	{	78	{
60	char filename1[MAX_BUF], filename2[MAX_BUF];	79	CALL_BEGIN (2);
61		80	CALL_ARG_SV (newSVval64 (skip));
62	sprintf (filename1, "%s/uuid", settings.localdir);	81	CALL_ARG_SV (boolSV (sync));
63	sprintf (filename2, "%s/uuid~", settings.localdir);	82	CALL_CALL ("cf::write_uuid", G_DISCARD);
64		83	CALL_END;
65	FILE *fp;
66
67	if (!(fp = fopen (filename2, "w")))
68	{
69	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
70	return;
71	}
72
73	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
74	fclose (fp);
75	rename (filename2, filename1);
76	}	84	}
77		85
78	static void	86	static void
79	read_uuid (void)	87	read_uuid ()
80	{	88	{
81	char filename[MAX_BUF];	89	char filename[MAX_BUF];
82		90
83	sprintf (filename, "%s/uuid", settings.localdir);	91	sprintf (filename, "%s/uuid", settings.localdir);
		92
		93	seq_next_save = 0;
84		94
85	FILE *fp;	95	FILE *fp;
86		96
87	if (!(fp = fopen (filename, "r")))	97	if (!(fp = fopen (filename, "r")))
88	{	98	{
89	if (errno == ENOENT)	99	if (errno == ENOENT)
90	{	100	{
91	LOG (llevInfo, "RESET uid to 1\n");	101	LOG (llevInfo, "RESET uid to 1\n");
92	uuid.seq = 0;	102	UUID::cur.seq = 0;
93	write_uuid ();	103	write_uuid (UUID_GAP, true);
94	return;	104	return;
95	}	105	}
96		106
97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);	107	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
98	_exit (1);	108	_exit (1);
99	}	109	}
100		110
101	int version;	111	char buf [UUID::MAX_LEN];
102	unsigned long long uid;	112	buf[0] = 0;
103	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)	113	fgets (buf, sizeof (buf), fp);
		114
		115	if (!UUID::cur.parse (buf))
104	{	116	{
105	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);	117	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
106	_exit (1);	118	_exit (1);
107	}	119	}
108		120
109	uuid.seq = uid;
110	write_uuid ();
111	LOG (llevDebug, "read UID: %lld\n", uid);	121	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		122
		123	write_uuid (UUID_GAP, true);
112	fclose (fp);	124	fclose (fp);
113	}	125	}
114		126
115	UUID	127	UUID
116	gen_uuid ()	128	UUID::gen ()
117	{	129	{
118	UUID uid;	130	UUID uid;
119		131
120	uid.seq = ++uuid.seq;	132	uid.seq = ++cur.seq;
121		133
122	if (!(uuid.seq & (UUID_SKIP - 1)))	134	if (expect_false (cur.seq >= seq_next_save))
123	write_uuid ();	135	{
		136	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		137	write_uuid (UUID_GAP, false);
		138	}
		139
124		140
125	return uid;	141	return uid;
126	}	142	}
127		143
128	void	144	void
129	init_uuid ()	145	UUID::init ()
130	{	146	{
131	read_uuid ();	147	read_uuid ();
132	}	148	}
133		149
		150	bool
		151	UUID::parse (const char *s)
		152	{
		153	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		154	return false;
		155
		156	seq = 0;
		157
		158	while (*s != '>')
		159	{
		160	if (*s < '0')
		161	return false;
		162
		163	// this gives nice branchless code with gcc
		164	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		165	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		166
		167	seq = (seq << 4) | digit;
		168
		169	++s;
		170	}
		171
		172	return true;
		173	}
		174
		175	char *
		176	UUID::append (char *buf) const
		177	{
		178	*buf++ = '<';
		179	*buf++ = '1';
		180	*buf++ = '.';
		181
		182	uint64_t seq = this->seq;
		183	const int bits = 64;
		184	char nz = 0;
		185	static const char tohex [] = "0123456789abcdef";
		186
		187	// assert (len >= 3 + bits / 4 + 1 + 1);
		188	for (int i = bits / 4; --i; )
		189	{
		190	uint8_t digit = seq >> (bits - 4);
		191
		192	*buf = tohex [digit];
		193	nz |= digit;
		194	buf += nz ? 1 : 0;
		195	seq <<= 4;
		196	}
		197
		198	// last digit is special - always emit
		199	uint8_t digit = seq >> (bits - 4);
		200	*buf++ = tohex [digit];
		201
		202	*buf++ = '>';
		203
		204	return buf;
		205	}
		206
		207	char *
		208	UUID::c_str () const
		209	{
		210	static char buf [MAX_LEN];
		211	*append (buf) = 0;
		212	return buf;
		213	}
		214
134	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	215	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
135	static int	216	static bool
136	compare_ob_value_lists_one (const object *wants, const object *has)	217	compare_ob_value_lists_one (const object *wants, const object *has)
137	{	218	{
138	key_value *wants_field;
139
140	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	219	/* n-squared behaviour (see kv_get), but I'm hoping both
141	* objects with lists are rare, and lists stay short. If not, use a	220	* objects with lists are rare, and lists stay short. If not, use a
142	* different structure or at least keep the lists sorted...	221	* different structure or at least keep the lists sorted...
143	*/	222	*/
144		223
145	/* For each field in wants, */	224	/* For each field in wants, */
146	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next)	225	for (key_value *kv = wants->key_values; kv; kv = kv->next)
147	{	226	if (has->kv_get (kv->key) != kv->value)
148	key_value *has_field;	227	return false;
149
150	/* Look for a field in has with the same key. */
151	has_field = get_ob_key_link (has, wants_field->key);
152
153	if (has_field == NULL)
154	{
155	/* No field with that name. */
156	return FALSE;
157	}
158
159	/* Found the matching field. */
160	if (has_field->value != wants_field->value)
161	{
162	/* Values don't match, so this half of the comparison is false. */
163	return FALSE;
164	}
165
166	/* If we get here, we found a match. Now for the next field in wants. */
167	}
168		228
169	/* If we get here, every field in wants has a matching field in has. */	229	/* If we get here, every field in wants has a matching field in has. */
170	return TRUE;	230	return true;
171	}	231	}
172		232
173	/* Returns TRUE if ob1 has the same key_values as ob2. */	233	/* Returns TRUE if ob1 has the same key_values as ob2. */
174	static int	234	static bool
175	compare_ob_value_lists (const object *ob1, const object *ob2)	235	compare_ob_value_lists (const object *ob1, const object *ob2)
176	{	236	{
177	/* However, there may be fields in has which aren't partnered in wants,	237	/* However, there may be fields in has which aren't partnered in wants,
178	* so we need to run the comparison *twice*. :(	238	* so we need to run the comparison *twice*. :(
179	*/	239	*/
180	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);	240	return compare_ob_value_lists_one (ob1, ob2)
		241	&& compare_ob_value_lists_one (ob2, ob1);
181	}	242	}
182		243
183	/* Function examines the 2 objects given to it, and returns true if	244	/* Function examines the 2 objects given to it, and returns true if
184	* they can be merged together.	245	* they can be merged together.
185	*	246	*
186	* Note that this function appears a lot longer than the macro it	247	* Note that this function appears a lot longer than the macro it
187	* replaces - this is mostly for clarity - a decent compiler should hopefully	248	* replaces - this is mostly for clarity - a decent compiler should hopefully
188	* reduce this to the same efficiency.	249	* reduce this to the same efficiency.
189	*	250	*
190	* Check nrof variable *before* calling CAN_MERGE()	251	* Check nrof variable *before* calling can_merge()
191	*	252	*
192	* Improvements made with merge: Better checking on potion, and also	253	* Improvements made with merge: Better checking on potion, and also
193	* check weight	254	* check weight
194	*/	255	*/
195
196	bool object::can_merge (object *ob1, object *ob2)	256	bool object::can_merge_slow (object *ob1, object *ob2)
197	{	257	{
198	/* A couple quicksanity checks */	258	/* A couple quick sanity checks */
199	if ((ob1 == ob2) || (ob1->type != ob2->type))	259	if (ob1 == ob2
		260	|| ob1->type != ob2->type
		261	|| ob1->value != ob2->value
		262	|| ob1->name != ob2->name
		263	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
200	return 0;	264	return 0;
201		265
202	if (ob1->speed != ob2->speed)	266	/* Do not merge objects if nrof would overflow, assume nrof
		267	* is always 0 .. 2**31-1 */
		268	if (ob1->nrof > 0x7fffffff - ob2->nrof)
203	return 0;	269	return 0;
204		270
205	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
206	* value could not be stored in a sint32 (which unfortunately sometimes is
207	* used to store nrof).
208	*/
209	if (ob1->nrof + ob2->nrof >= 1UL << 31)
210	return 0;
211
212	/* If the objects have been identified, set the BEEN_APPLIED flag.	271	/* If the objects have been identified, set the BEEN_APPLIED flag.
213	* This is to the comparison of the flags below will be OK. We	272	* This is to the comparison of the flags below will be OK. We
214	* just can't ignore the been applied or identified flags, as they	273	* just can't ignore the been applied or identified flags, as they
215	* are not equal - just if it has been identified, the been_applied	274	* are not equal - just if it has been identified, the been_applied
216	* flags lose any meaning.	275	* flags lose any meaning.
217	*/	276	*/
218	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	277	if (ob1->flag [FLAG_IDENTIFIED])
219	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	278	ob1->set_flag (FLAG_BEEN_APPLIED);
220		279
221	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	280	if (ob2->flag [FLAG_IDENTIFIED])
222	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	281	ob2->set_flag (FLAG_BEEN_APPLIED);
223		282
224		283	if (ob1->arch->archname != ob2->arch->archname
225	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
226	* being locked in inventory should prevent merging.
227	* 0x4 in flags3 is CLIENT_SENT
228	*/
229	if ((ob1->arch != ob2->arch) ||
230	(ob1->flags[0] != ob2->flags[0]) ||
231	(ob1->flags[1] != ob2->flags[1]) ||
232	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
233	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
234	(ob1->name != ob2->name) ||	284	|| ob1->name != ob2->name
235	(ob1->title != ob2->title) ||	285	|| ob1->title != ob2->title
236	(ob1->msg != ob2->msg) ||	286	|| ob1->msg != ob2->msg
237	(ob1->weight != ob2->weight) ||	287	|| ob1->weight != ob2->weight
238	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||
239	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||
240	(ob1->attacktype != ob2->attacktype) ||	288	|| ob1->attacktype != ob2->attacktype
241	(ob1->magic != ob2->magic) ||	289	|| ob1->magic != ob2->magic
242	(ob1->slaying != ob2->slaying) ||	290	|| ob1->slaying != ob2->slaying
243	(ob1->skill != ob2->skill) ||	291	|| ob1->skill != ob2->skill
244	(ob1->value != ob2->value) ||	292	|| ob1->value != ob2->value
245	(ob1->animation_id != ob2->animation_id) ||	293	|| ob1->animation_id != ob2->animation_id
		294	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
246	(ob1->client_type != ob2->client_type) ||	295	|| ob1->client_type != ob2->client_type
247	(ob1->materialname != ob2->materialname) ||	296	|| ob1->material != ob2->material
248	(ob1->lore != ob2->lore) ||	297	|| ob1->lore != ob2->lore
249	(ob1->subtype != ob2->subtype) ||	298	|| ob1->subtype != ob2->subtype
250	(ob1->move_type != ob2->move_type) ||	299	|| ob1->move_type != ob2->move_type
251	(ob1->move_block != ob2->move_block) ||	300	|| ob1->move_block != ob2->move_block
252	(ob1->move_allow != ob2->move_allow) ||	301	|| ob1->move_allow != ob2->move_allow
253	(ob1->move_on != ob2->move_on) ||	302	|| ob1->move_on != ob2->move_on
254	(ob1->move_off != ob2->move_off) || (ob1->move_slow != ob2->move_slow) || (ob1->move_slow_penalty != ob2->move_slow_penalty))	303	|| ob1->move_off != ob2->move_off
		304	|| ob1->move_slow != ob2->move_slow
		305	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		306	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		307	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
255	return 0;	308	return 0;
256		309
		310	if ((ob1->flag ^ ob2->flag)
		311	.reset (FLAG_INV_LOCKED)
		312	.reset (FLAG_REMOVED)
		313	.any ())
		314	return 0;
		315
257	/* This is really a spellbook check - really, we should	316	/* This is really a spellbook check - we should in general
258	* check all objects in the inventory.	317	* not merge objects with real inventories, as splitting them
		318	* is hard.
259	*/	319	*/
260	if (ob1->inv || ob2->inv)	320	if (ob1->inv || ob2->inv)
261	{	321	{
262	/* if one object has inventory but the other doesn't, not equiv */
263	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
264	return 0;
265
266	/* Now check to see if the two inventory objects could merge */
267	if (!CAN_MERGE (ob1->inv, ob2->inv))	322	if (!(ob1->inv && ob2->inv))
268	return 0;	323	return 0; /* inventories differ in length */
		324
		325	if (ob1->inv->below || ob2->inv->below)
		326	return 0; /* more than one object in inv */
		327
		328	if (!object::can_merge (ob1->inv, ob2->inv))
		329	return 0; /* inventory objects differ */
269		330
270	/* inventory ok - still need to check rest of this object to see	331	/* inventory ok - still need to check rest of this object to see
271	* if it is valid.	332	* if it is valid.
272	*/	333	*/
273	}	334	}
274		335
275	/* Don't merge objects that are applied. With the new 'body' code,	336	/* Don't merge objects that are applied. With the new 'body' code,
276	* it is possible for most any character to have more than one of	337	* it is possible for most any character to have more than one of
277	* some items equipped, and we don't want those to merge.	338	* some items equipped, and we don't want those to merge.
278	*/	339	*/
279	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))	340	if (ob1->flag [FLAG_APPLIED] || ob2->flag [FLAG_APPLIED])
280	return 0;	341	return 0;
281		342
282	/* Note sure why the following is the case - either the object has to	343	/* Note sure why the following is the case - either the object has to
283	* be animated or have a very low speed. Is this an attempted monster	344	* be animated or have a very low speed. Is this an attempted monster
284	* check?	345	* check?
285	*/	346	*/
286	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)	347	if (!ob1->flag [FLAG_ANIMATE] && ob1->has_active_speed ())
287	return 0;	348	return 0;
288		349
289	switch (ob1->type)	350	switch (ob1->type)
290	{	351	{
291	case SCROLL:	352	case SCROLL:
292	if (ob1->level != ob2->level)	353	if (ob1->level != ob2->level)
293	return 0;	354	return 0;
294	break;	355	break;
295	}	356	}
296		357
297	if (ob1->key_values != NULL || ob2->key_values != NULL)	358	if (ob1->key_values || ob2->key_values)
298	{	359	{
299	/* At least one of these has key_values. */	360	/* At least one of these has key_values. */
300	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	361	if ((!ob1->key_values) != (!ob2->key_values))
301	/* One has fields, but the other one doesn't. */	362	return 0; /* One has fields, but the other one doesn't. */
		363
		364	if (!compare_ob_value_lists (ob1, ob2))
302	return 0;	365	return 0;
303	else if (!compare_ob_value_lists (ob1, ob2))
304	return 0;
305	}	366	}
306		367
307	//TODO: generate an event or call into perl for additional checks
308	if (ob1->self || ob2->self)	368	if (ob1->self || ob2->self)
309	{	369	{
310	ob1->optimise ();	370	ob1->optimise ();
311	ob2->optimise ();	371	ob2->optimise ();
312		372
313	if (ob1->self || ob2->self)	373	if (ob1->self || ob2->self)
		374	{
		375	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		376	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		377
		378	if (k1 != k2)
314	return 0;	379	return 0;
		380
		381	if (k1 == 0)
		382	return 1;
		383
		384	if (!cfperl_can_merge (ob1, ob2))
		385	return 0;
		386	}
315	}	387	}
316		388
317	/* Everything passes, must be OK. */	389	/* Everything passes, must be OK. */
318	return 1;	390	return 1;
319	}	391	}
320		392
		393	// find player who can see this object
		394	object *
		395	object::visible_to () const
		396	{
		397	if (client_visible () && !flag [FLAG_REMOVED])
		398	{
		399	// see if we are in a container of sorts
		400	if (env)
		401	{
		402	// the player inventory itself is always visible
		403	if (env->is_player ())
		404	return env;
		405
		406	// else a player could have our env open
		407	object *envest = env->outer_env_or_self ();
		408
		409	// the player itself is always on a map, so we will find him here
		410	// even if our inv is in a player.
		411	if (envest->is_on_map ())
		412	if (object *pl = envest->ms ().player ())
		413	if (pl->container_ () == env)
		414	return pl;
		415	}
		416	else
		417	{
		418	// maybe there is a player standing on the same mapspace
		419	// this will catch the case where "this" is a player
		420	if (object *pl = ms ().player ())
		421	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		422	|| pl->container_ () == this)
		423	return pl;
		424	}
		425	}
		426
		427	return 0;
		428	}
		429
		430	// adjust weight per container type ("of holding")
		431	static sint32
		432	weight_adjust_for (object *op, sint32 weight)
		433	{
		434	return op->type == CONTAINER
		435	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		436	: weight;
		437	}
		438
321	/*	439	/*
		440	* adjust_weight(object, weight) adds the specified weight to an object,
		441	* and also updates how much the environment(s) is/are carrying.
		442	*/
		443	static void
		444	adjust_weight (object *op, sint32 weight)
		445	{
		446	while (op)
		447	{
		448	// adjust by actual difference to account for rounding errors
		449	// i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
		450	weight = weight_adjust_for (op, op->carrying)
		451	- weight_adjust_for (op, op->carrying - weight);
		452
		453	if (!weight)
		454	return;
		455
		456	op->carrying += weight;
		457
		458	if (object *pl = op->visible_to ())
		459	if (pl != op) // player is handled lazily
		460	esrv_update_item (UPD_WEIGHT, pl, op);
		461
		462	op = op->env;
		463	}
		464	}
		465
		466	/*
322	* sum_weight() is a recursive function which calculates the weight	467	* this is a recursive function which calculates the weight
323	* an object is carrying. It goes through in figures out how much	468	* an object is carrying. It goes through op and figures out how much
324	* containers are carrying, and sums it up.	469	* containers are carrying, and sums it up.
325	*/	470	*/
326	long	471	void
327	sum_weight (object *op)	472	object::update_weight ()
328	{	473	{
329	long sum;	474	sint32 sum = 0;
330	object *inv;
331		475
332	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)	476	for (object *op = inv; op; op = op->below)
333	{	477	{
334	if (inv->inv)	478	if (op->inv)
335	sum_weight (inv);	479	op->update_weight ();
336	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	480
		481	sum += op->total_weight ();
		482	}
		483
		484	sum = weight_adjust_for (this, sum);
		485
		486	if (sum != carrying)
337	}	487	{
338
339	if (op->type == CONTAINER && op->stats.Str)
340	sum = (sum * (100 - op->stats.Str)) / 100;
341
342	if (op->carrying != sum)	488	if (carrying != sum)//D
		489	LOG (llevDebug, "updating weight got %ld, expected %ld (%s)\n",
		490	(long long)sum, (long long)carrying, debug_desc ());
		491
343	op->carrying = sum;	492	carrying = sum;
344		493
345	return sum;	494	if (object *pl = visible_to ())
346	}	495	if (pl != this) // player is handled lazily
347		496	esrv_update_item (UPD_WEIGHT, pl, this);
348	/**
349	* Return the outermost environment object for a given object.
350	*/
351
352	object *
353	object_get_env_recursive (object *op)
354	{
355	while (op->env != NULL)
356	op = op->env;
357	return op;
358	}
359
360	/*
361	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
362	* a better check. We basically keeping traversing up until we can't
363	* or find a player.
364	*/
365
366	object *
367	is_player_inv (object *op)
368	{
369	for (; op != NULL && op->type != PLAYER; op = op->env)
370	if (op->env == op)
371	op->env = NULL;
372	return op;
373	}
374
375	/*
376	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
377	* Some error messages.
378	* The result of the dump is stored in the static global errmsg array.
379	*/
380
381	void
382	dump_object2 (object *op)
383	{
384	errmsg[0] = 0;
385	return;
386	//TODO//D#d#
387	#if 0
388	char *cp;
389
390	/* object *tmp;*/
391
392	if (op->arch != NULL)
393	{	497	}
394	strcat (errmsg, "arch ");
395	strcat (errmsg, op->arch->name ? op->arch->name : "(null)");
396	strcat (errmsg, "\n");
397	if ((cp = get_ob_diff (op, &empty_archetype->clone)) != NULL)
398	strcat (errmsg, cp);
399	# if 0
400	/* Don't dump player diffs - they are too long, mostly meaningless, and
401	* will overflow the buffer.
402	* Changed so that we don't dump inventory either. This may
403	* also overflow the buffer.
404	*/
405	if (op->type != PLAYER && (cp = get_ob_diff (op, &empty_archetype->clone)) != NULL)
406	strcat (errmsg, cp);
407	for (tmp = op->inv; tmp; tmp = tmp->below)
408	dump_object2 (tmp);
409	# endif
410	strcat (errmsg, "end\n");
411	}
412	else
413	{
414	strcat (errmsg, "Object ");
415	if (op->name == NULL)
416	strcat (errmsg, "(null)");
417	else
418	strcat (errmsg, op->name);
419	strcat (errmsg, "\n");
420	# if 0
421	if ((cp = get_ob_diff (op, &empty_archetype->clone)) != NULL)
422	strcat (errmsg, cp);
423	for (tmp = op->inv; tmp; tmp = tmp->below)
424	dump_object2 (tmp);
425	# endif
426	strcat (errmsg, "end\n");
427	}
428	#endif
429	}	498	}
430		499
431	/*	500	/*
432	* Dumps an object. Returns output in the static global errmsg array.	501	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
433	*/	502	*/
434		503	char *
435	void
436	dump_object (object *op)	504	dump_object (object *op)
437	{	505	{
438	if (op == NULL)	506	if (!op)
439	{	507	return strdup ("[NULLOBJ]");
440	strcpy (errmsg, "[NULL pointer]");
441	return;
442	}
443	errmsg[0] = '\0';
444	dump_object2 (op);
445	}
446		508
447	void	509	object_freezer freezer;
448	dump_all_objects (void)	510	op->write (freezer);
449	{	511	return freezer.as_string ();
450	object *op;
451
452	for (op = objects; op != NULL; op = op->next)
453	{
454	dump_object (op);
455	fprintf (logfile, "Object %d\n:%s\n", op->count, errmsg);
456	}
457	}	512	}
458		513
459	/*	514	char *
460	* get_nearest_part(multi-object, object 2) returns the part of the	515	object::as_string ()
461	* multi-object 1 which is closest to the second object.
462	* If it's not a multi-object, it is returned.
463	*/
464
465	object *
466	get_nearest_part (object *op, const object *pl)
467	{	516	{
468	object *tmp, *closest;	517	return dump_object (this);
469	int last_dist, i;
470
471	if (op->more == NULL)
472	return op;
473	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
474	if ((i = distance (tmp, pl)) < last_dist)
475	closest = tmp, last_dist = i;
476	return closest;
477	}	518	}
478		519
479	/*	520	/*
480	* Returns the object which has the count-variable equal to the argument.	521	* Returns the object which has the count-variable equal to the argument.
		522	* VERRRY slow.
481	*/	523	*/
482
483	object *	524	object *
484	find_object (tag_t i)	525	find_object (tag_t i)
485	{	526	{
486	object *op;	527	for_all_objects (op)
487
488	for (op = objects; op != NULL; op = op->next)
489	if (op->count == i)	528	if (op->count == i)
490	break;
491	return op;	529	return op;
		530
		531	return 0;
		532	}
		533
		534	/*
		535	* Returns the object which has the uuid equal to the argument.
		536	* MOAR VERRRY slow.
		537	*/
		538
		539	object *
		540	find_object_uuid (UUID i)
		541	{
		542	for_all_objects (op)
		543	if (op->uuid == i)
		544	return op;
		545
		546	return 0;
492	}	547	}
493		548
494	/*	549	/*
495	* Returns the first object which has a name equal to the argument.	550	* Returns the first object which has a name equal to the argument.
496	* Used only by the patch command, but not all that useful.	551	* Used only by the patch command, but not all that useful.
497	* Enables features like "patch <name-of-other-player> food 999"	552	* Enables features like "patch <name-of-other-player> food 999"
498	*/	553	*/
499
500	object *	554	object *
501	find_object_name (const char *str)	555	find_object_name (const char *str)
502	{	556	{
503	shstr_cmp str_ (str);	557	shstr_cmp str_ (str);
504	object *op;
505		558
506	for (op = objects; op != NULL; op = op->next)	559	if (str_)
		560	for_all_objects (op)
507	if (op->name == str_)	561	if (op->name == str_)
508	break;	562	return op;
509		563
510	return op;	564	return 0;
511	}
512
513	void
514	free_all_object_data ()
515	{
516	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
517	}
518
519	/*
520	* Returns the object which this object marks as being the owner.
521	* A id-scheme is used to avoid pointing to objects which have been
522	* freed and are now reused. If this is detected, the owner is
523	* set to NULL, and NULL is returned.
524	* Changed 2004-02-12 - if the player is setting at the play again
525	* prompt, he is removed, and we don't want to treat him as an owner of
526	* anything, so check removed flag. I don't expect that this should break
527	* anything - once an object is removed, it is basically dead anyways.
528	*/
529	object *
530	object::get_owner ()
531	{
532	if (!owner
533	|| QUERY_FLAG (owner, FLAG_FREED)
534	|| QUERY_FLAG (owner, FLAG_REMOVED))
535	owner = 0;
536
537	return owner;
538	}	565	}
539		566
540	/*	567	/*
541	* Sets the owner and sets the skill and exp pointers to owner's current	568	* Sets the owner and sets the skill and exp pointers to owner's current
542	* skill and experience objects.	569	* skill and experience objects.
		570	* ACTUALLY NO! investigate! TODO
543	*/	571	*/
544	void	572	void
545	object::set_owner (object *owner)	573	object::set_owner (object *owner)
546	{	574	{
		575	// allow objects which own objects
547	if (!owner)	576	if (owner)
548	return;
549
550	/* next line added to allow objects which own objects */
551	/* Add a check for ownercounts in here, as I got into an endless loop
552	* with the fireball owning a poison cloud which then owned the
553	* fireball. I believe that was caused by one of the objects getting
554	* freed and then another object replacing it. Since the ownercounts
555	* didn't match, this check is valid and I believe that cause is valid.
556	*/
557	while (owner->owner)	577	while (owner->owner)
558	owner = owner->owner;	578	owner = owner->owner;
		579
		580	if (flag [FLAG_FREED])
		581	{
		582	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
		583	return;
		584	}
559		585
560	this->owner = owner;	586	this->owner = owner;
561	}	587	}
562		588
563	/* Zero the key_values on op, decrementing the shared-string	589	/* Zero the key_values on op, decrementing the shared-string
564	* refcounts and freeing the links.	590	* refcounts and freeing the links.
565	*/	591	*/
566	static void	592	static void
567	free_key_values (object *op)	593	free_key_values (object *op)
568	{	594	{
569	for (key_value *i = op->key_values; i != 0;)	595	for (key_value *i = op->key_values; i; )
570	{	596	{
571	key_value *next = i->next;	597	key_value *next = i->next;
572	delete i;	598	delete i;
573		599
574	i = next;	600	i = next;
575	}	601	}
576		602
577	op->key_values = 0;	603	op->key_values = 0;
578	}	604	}
579		605
580	void object::clear ()
581	{
582	attachable_base::clear ();
583
584	free_key_values (this);
585
586	owner = 0;
587	name = 0;
588	name_pl = 0;
589	title = 0;
590	race = 0;
591	slaying = 0;
592	skill = 0;
593	msg = 0;
594	lore = 0;
595	custom_name = 0;
596	materialname = 0;
597	contr = 0;
598	below = 0;
599	above = 0;
600	inv = 0;
601	container = 0;
602	env = 0;
603	more = 0;
604	head = 0;
605	map = 0;
606	active_next = 0;
607	active_prev = 0;
608
609	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
610
611	SET_FLAG (this, FLAG_REMOVED);
612
613	/* What is not cleared is next, prev, and count */
614
615	expmul = 1.0;
616	face = blank_face;
617	attacked_by_count = -1;
618
619	if (settings.casting_time)
620	casting_time = -1;
621	}
622
623	void object::clone (object *destination)
624	{
625	*(object_copy *)destination = *this;
626	*(object_pod *)destination = *this;
627
628	if (self || cb)
629	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
630	}
631
632	/*	606	/*
633	* copy object first frees everything allocated by the second object,	607	* copy_to first frees everything allocated by the dst object,
634	* and then copies the contends of the first object into the second	608	* and then copies the contents of itself into the second
635	* object, allocating what needs to be allocated. Basically, any	609	* object, allocating what needs to be allocated. Basically, any
636	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	610	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
637	* if the first object is freed, the pointers in the new object	611	* if the first object is freed, the pointers in the new object
638	* will point at garbage.	612	* will point at garbage.
639	*/	613	*/
640	void	614	void
641	copy_object (object *op2, object *op)	615	object::copy_to (object *dst)
642	{	616	{
643	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	617	dst->remove ();
644	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	618	*(object_copy *)dst = *this;
645		619	dst->flag [FLAG_REMOVED] = true;
646	op2->clone (op);
647
648	if (is_freed)
649	SET_FLAG (op, FLAG_FREED);
650	if (is_removed)
651	SET_FLAG (op, FLAG_REMOVED);
652
653	if (op2->speed < 0)
654	op->speed_left = op2->speed_left - RANDOM () % 200 / 100.0;
655		620
656	/* Copy over key_values, if any. */	621	/* Copy over key_values, if any. */
657	if (op2->key_values)	622	if (key_values)
658	{	623	{
659	key_value *tail = 0;	624	key_value *tail = 0;
660	key_value *i;
661
662	op->key_values = 0;	625	dst->key_values = 0;
663		626
664	for (i = op2->key_values; i; i = i->next)	627	for (key_value *i = key_values; i; i = i->next)
665	{	628	{
666	key_value *new_link = new key_value;	629	key_value *new_link = new key_value;
667		630
668	new_link->next = 0;	631	new_link->next = 0;
669	new_link->key = i->key;	632	new_link->key = i->key;
670	new_link->value = i->value;	633	new_link->value = i->value;
671		634
672	/* Try and be clever here, too. */	635	/* Try and be clever here, too. */
673	if (!op->key_values)	636	if (!dst->key_values)
674	{	637	{
675	op->key_values = new_link;	638	dst->key_values = new_link;
676	tail = new_link;	639	tail = new_link;
677	}	640	}
678	else	641	else
679	{	642	{
680	tail->next = new_link;	643	tail->next = new_link;
681	tail = new_link;	644	tail = new_link;
682	}	645	}
683	}	646	}
684	}	647	}
685		648
686	update_ob_speed (op);	649	dst->activate ();
		650	}
		651
		652	void
		653	object::instantiate ()
		654	{
		655	if (!uuid.seq) // HACK
		656	uuid = UUID::gen ();
		657
		658	// TODO: unclean state changes, should nt be done in copy_to AND instantiate
		659	if (flag [FLAG_RANDOM_SPEED] && speed)
		660	speed_left = - speed - rndm (); // TODO animation
		661	else
		662	speed_left = -1.;
		663
		664	/* copy the body_info to the body_used - this is only really
		665	* need for monsters, but doesn't hurt to do it for everything.
		666	* by doing so, when a monster is created, it has good starting
		667	* values for the body_used info, so when items are created
		668	* for it, they can be properly equipped.
		669	*/
		670	for (int i = NUM_BODY_LOCATIONS; i--; )
		671	slot[i].used = slot[i].info;
		672
		673	attachable::instantiate ();
		674	}
		675
		676	object *
		677	object::clone ()
		678	{
		679	object *neu = create ();
		680	copy_to (neu);
		681
		682	// TODO: unclean state changes, should not be done in clone AND instantiate
		683	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
		684	neu->speed_left = - neu->speed - rndm (); // TODO animation
		685
		686	neu->map = map; // not copied by copy_to
		687	return neu;
687	}	688	}
688		689
689	/*	690	/*
690	* If an object with the IS_TURNABLE() flag needs to be turned due	691	* If an object with the IS_TURNABLE() flag needs to be turned due
691	* to the closest player being on the other side, this function can	692	* to the closest player being on the other side, this function can
692	* be called to update the face variable, _and_ how it looks on the map.	693	* be called to update the face variable, _and_ how it looks on the map.
693	*/	694	*/
694
695	void	695	void
696	update_turn_face (object *op)	696	update_turn_face (object *op)
697	{	697	{
698	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || op->arch == NULL)	698	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
699	return;	699	return;
		700
700	SET_ANIMATION (op, op->direction);	701	SET_ANIMATION (op, op->direction);
701	update_object (op, UP_OBJ_FACE);	702	update_object (op, UP_OBJ_FACE);
702	}	703	}
703		704
704	/*	705	/*
705	* Updates the speed of an object. If the speed changes from 0 to another	706	* Updates the speed of an object. If the speed changes from 0 to another
706	* value, or vice versa, then add/remove the object from the active list.	707	* value, or vice versa, then add/remove the object from the active list.
707	* This function needs to be called whenever the speed of an object changes.	708	* This function needs to be called whenever the speed of an object changes.
708	*/	709	*/
709	void	710	void
710	update_ob_speed (object *op)	711	object::set_speed (float speed)
711	{	712	{
712	extern int arch_init;	713	this->speed = speed;
713		714
714	/* No reason putting the archetypes objects on the speed list,	715	if (has_active_speed ())
715	* since they never really need to be updated.	716	activate ();
716	*/
717
718	if (QUERY_FLAG (op, FLAG_FREED) && op->speed)
719	{
720	LOG (llevError, "Object %s is freed but has speed.\n", &op->name);
721	#ifdef MANY_CORES
722	abort ();
723	#else
724	op->speed = 0;
725	#endif
726	}
727
728	if (arch_init)
729	return;
730
731	if (FABS (op->speed) > MIN_ACTIVE_SPEED)
732	{
733	/* If already on active list, don't do anything */
734	if (op->active_next || op->active_prev || op == active_objects)
735	return;
736
737	/* process_events() expects us to insert the object at the beginning
738	* of the list. */
739	op->active_next = active_objects;
740
741	if (op->active_next != NULL)
742	op->active_next->active_prev = op;
743
744	active_objects = op;
745	}
746	else	717	else
747	{	718	deactivate ();
748	/* If not on the active list, nothing needs to be done */
749	if (!op->active_next && !op->active_prev && op != active_objects)
750	return;
751
752	if (op->active_prev == NULL)
753	{
754	active_objects = op->active_next;
755
756	if (op->active_next != NULL)
757	op->active_next->active_prev = NULL;
758	}
759	else
760	{
761	op->active_prev->active_next = op->active_next;
762
763	if (op->active_next)
764	op->active_next->active_prev = op->active_prev;
765	}
766
767	op->active_next = NULL;
768	op->active_prev = NULL;
769	}
770	}	719	}
771		720
772	/* This function removes object 'op' from the list of active
773	* objects.
774	* This should only be used for style maps or other such
775	* reference maps where you don't want an object that isn't
776	* in play chewing up cpu time getting processed.
777	* The reverse of this is to call update_ob_speed, which
778	* will do the right thing based on the speed of the object.
779	*/
780	void
781	remove_from_active_list (object *op)
782	{
783	/* If not on the active list, nothing needs to be done */
784	if (!op->active_next && !op->active_prev && op != active_objects)
785	return;
786
787	if (op->active_prev == NULL)
788	{
789	active_objects = op->active_next;
790	if (op->active_next != NULL)
791	op->active_next->active_prev = NULL;
792	}
793	else
794	{
795	op->active_prev->active_next = op->active_next;
796	if (op->active_next)
797	op->active_next->active_prev = op->active_prev;
798	}
799	op->active_next = NULL;
800	op->active_prev = NULL;
801	}
802
803	/*	721	/*
804	* update_object() updates the array which represents the map.	722	* update_object() updates the the map.
805	* It takes into account invisible objects (and represent squares covered	723	* It takes into account invisible objects (and represent squares covered
806	* by invisible objects by whatever is below them (unless it's another	724	* by invisible objects by whatever is below them (unless it's another
807	* invisible object, etc...)	725	* invisible object, etc...)
808	* If the object being updated is beneath a player, the look-window	726	* If the object being updated is beneath a player, the look-window
809	* of that player is updated (this might be a suboptimal way of	727	* of that player is updated (this might be a suboptimal way of
810	* updating that window, though, since update_object() is called _often_)	728	* updating that window, though, since update_object() is called _often_)
811	*	729	*
812	* action is a hint of what the caller believes need to be done.	730	* action is a hint of what the caller believes need to be done.
813	* For example, if the only thing that has changed is the face (due to
814	* an animation), we don't need to call update_position until that actually
815	* comes into view of a player. OTOH, many other things, like addition/removal
816	* of walls or living creatures may need us to update the flags now.
817	* current action are:	731	* current action are:
818	* UP_OBJ_INSERT: op was inserted	732	* UP_OBJ_INSERT: op was inserted
819	* UP_OBJ_REMOVE: op was removed	733	* UP_OBJ_REMOVE: op was removed
820	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	734	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
821	* as that is easier than trying to look at what may have changed.	735	* as that is easier than trying to look at what may have changed.
822	* UP_OBJ_FACE: only the objects face has changed.	736	* UP_OBJ_FACE: only the objects face has changed.
823	*/	737	*/
824
825	void	738	void
826	update_object (object *op, int action)	739	update_object (object *op, int action)
827	{	740	{
828	int update_now = 0, flags;	741	if (!op)
829	MoveType move_on, move_off, move_block, move_slow;
830
831	if (op == NULL)
832	{	742	{
833	/* this should never happen */	743	/* this should never happen */
834	LOG (llevDebug, "update_object() called for NULL object.\n");	744	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
835	return;	745	return;
836	}	746	}
837		747
838	if (op->env != NULL)	748	if (!op->is_on_map ())
839	{	749	{
840	/* Animation is currently handled by client, so nothing	750	/* Animation is currently handled by client, so nothing
841	* to do in this case.	751	* to do in this case.
842	*/	752	*/
843	return;	753	return;
844	}	754	}
845		755
846	/* If the map is saving, don't do anything as everything is
847	* going to get freed anyways.
848	*/
849	if (!op->map || op->map->in_memory == MAP_SAVING)
850	return;
851
852	/* make sure the object is within map boundaries */	756	/* make sure the object is within map boundaries */
853	if (op->x < 0 || op->x >= MAP_WIDTH (op->map) || op->y < 0 || op->y >= MAP_HEIGHT (op->map))	757	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
854	{	758	{
855	LOG (llevError, "update_object() called for object out of map!\n");	759	LOG (llevError, "update_object() called for object out of map!\n");
856	#ifdef MANY_CORES	760	#ifdef MANY_CORES
857	abort ();	761	abort ();
858	#endif	762	#endif
859	return;	763	return;
860	}	764	}
861		765
862	flags = GET_MAP_FLAGS (op->map, op->x, op->y);	766	mapspace &m = op->ms ();
863	SET_MAP_FLAGS (op->map, op->x, op->y, flags | P_NEED_UPDATE);
864	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
865	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
866	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
867	move_off = GET_MAP_MOVE_OFF (op->map, op->x, op->y);
868		767
		768	if (!(m.flags_ & P_UPTODATE))
		769	/* nop */;
869	if (action == UP_OBJ_INSERT)	770	else if (action == UP_OBJ_INSERT)
870	{	771	{
		772	#if 0
		773	// this is likely overkill, TODO: revisit (schmorp)
871	if (QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	774	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
872	update_now = 1;	775	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
873		776	|| (op->is_player () && !(m.flags_ & P_PLAYER))
874	if (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))
875	update_now = 1;
876
877	if (QUERY_FLAG (op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))
878	update_now = 1;
879
880	if (QUERY_FLAG (op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
881	update_now = 1;
882
883	if (op->type == SAFE_GROUND && !(flags & P_SAFE))	777	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
884	update_now = 1;	778	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
885		779	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
886	if ((move_on | op->move_on) != move_on)	780	|| (m.move_on | op->move_on ) != m.move_on
887	update_now = 1;
888
889	if ((move_off | op->move_off) != move_off)	781	|| (m.move_off | op->move_off ) != m.move_off
890	update_now = 1;	782	|| (m.move_slow | op->move_slow) != m.move_slow
891
892	/* This isn't perfect, but I don't expect a lot of objects to	783	/* This isn't perfect, but I don't expect a lot of objects to
893	* to have move_allow right now.	784	* have move_allow right now.
894	*/	785	*/
895	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	786	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
896	update_now = 1;	787	m.invalidate ();
897		788	#else
898	if ((move_slow | op->move_slow) != move_slow)	789	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
899	update_now = 1;	790	m.invalidate ();
		791	#endif
900	}	792	}
901	/* if the object is being removed, we can't make intelligent	793	/* if the object is being removed, we can't make intelligent
902	* decisions, because remove_ob can't really pass the object	794	* decisions, because remove_ob can't really pass the object
903	* that is being removed.	795	* that is being removed.
904	*/	796	*/
905	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)	797	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
906	update_now = 1;	798	m.invalidate ();
907	else if (action == UP_OBJ_FACE)	799	else if (action == UP_OBJ_FACE)
908	/* Nothing to do for that case */ ;	800	/* Nothing to do for that case */ ;
909	else	801	else
910	LOG (llevError, "update_object called with invalid action: %d\n", action);	802	LOG (llevError, "update_object called with invalid action: %d\n", action);
911		803
912	if (update_now)
913	{
914	SET_MAP_FLAGS (op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
915	update_position (op->map, op->x, op->y);
916	}
917
918	if (op->more != NULL)	804	if (op->more)
919	update_object (op->more, action);	805	update_object (op->more, action);
920	}	806	}
921		807
922	static unordered_vector<object *> mortals;
923	static std::vector<object *, slice_allocator <object *> > freed;
924
925	void object::free_mortals ()
926	{
927	for (unordered_vector<object *>::iterator i = mortals.begin (); i != mortals.end ();)
928	if ((*i)->refcnt)
929	++i; // further delay freeing
930	else
931	{
932	//freed.push_back (*i);//D
933	delete *i;
934	mortals.erase (i);
935	}
936
937	if (mortals.size() && 0)//D
938	LOG (llevDebug, "%d objects in mortal queue\n", mortals.size());//D
939	}
940
941	object::object ()	808	object::object ()
942	{	809	{
943	SET_FLAG (this, FLAG_REMOVED);	810	this->set_flag (FLAG_REMOVED);
944		811
945	expmul = 1.0;	812	//expmul = 1.0; declared const for the time being
946	face = blank_face;	813	face = blank_face;
947	attacked_by_count = -1;	814	material = MATERIAL_NULL;
948	}	815	}
949		816
950	object::~object ()	817	object::~object ()
951	{	818	{
		819	unlink ();
		820
952	free_key_values (this);	821	free_key_values (this);
953	}	822	}
954		823
955	void object::link ()	824	void object::link ()
956	{	825	{
957	count = ++ob_count;	826	assert (!index);//D
		827	uuid = UUID::gen ();
958		828
959	prev = 0;	829	refcnt_inc ();
960	next = objects;	830	objects.insert (this);
961		831
962	if (objects)	832	++create_count;
963	objects->prev = this;
964		833
965	objects = this;
966	}	834	}
967		835
968	void object::unlink ()	836	void object::unlink ()
969	{	837	{
970	count = 0;
971	uuid = gen_uuid ();
972
973	if (this == objects)
974	objects = next;
975
976	/* Remove this object from the list of used objects */
977	if (prev)
978	{
979	prev->next = next;
980	prev = 0;
981	}
982
983	if (next)	838	if (!index)
984	{	839	return;
985	next->prev = prev;	840
986	next = 0;	841	++destroy_count;
		842
		843	objects.erase (this);
		844	refcnt_dec ();
		845	}
		846
		847	void
		848	object::activate ()
		849	{
		850	/* If already on active list, don't do anything */
		851	if (active)
		852	return;
		853
		854	if (has_active_speed ())
987	}	855	{
988	}	856	if (flag [FLAG_FREED])
		857	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
989		858
990	object *object::create ()	859	actives.insert (this);
991	{	860	}
992	object *op;	861	}
993		862
994	if (freed.empty ())	863	void
995	op = new object;	864	object::activate_recursive ()
		865	{
		866	activate ();
		867
		868	for (object *op = inv; op; op = op->below)
		869	op->activate_recursive ();
		870	}
		871
		872	/* This function removes object 'op' from the list of active
		873	* objects.
		874	* This should only be used for style maps or other such
		875	* reference maps where you don't want an object that isn't
		876	* in play chewing up cpu time getting processed.
		877	* The reverse of this is to call update_ob_speed, which
		878	* will do the right thing based on the speed of the object.
		879	*/
		880	void
		881	object::deactivate ()
		882	{
		883	/* If not on the active list, nothing needs to be done */
		884	if (!active)
		885	return;
		886
		887	actives.erase (this);
		888	}
		889
		890	void
		891	object::deactivate_recursive ()
		892	{
		893	for (object *op = inv; op; op = op->below)
		894	op->deactivate_recursive ();
		895
		896	deactivate ();
		897	}
		898
		899	void
		900	object::set_flag_inv (int flag, int value)
		901	{
		902	for (object *op = inv; op; op = op->below)
		903	{
		904	op->flag [flag] = value;
		905	op->set_flag_inv (flag, value);
		906	}
		907	}
		908
		909	/*
		910	* Remove and free all objects in the inventory of the given object.
		911	* object.c ?
		912	*/
		913	void
		914	object::destroy_inv (bool drop_to_ground)
		915	{
		916	// need to check first, because the checks below might segfault
		917	// as we might be on an invalid mapspace and crossfire code
		918	// is too buggy to ensure that the inventory is empty.
		919	// corollary: if you create arrows etc. with stuff in its inventory,
		920	// cf will crash below with off-map x and y
		921	if (!inv)
		922	return;
		923
		924	/* Only if the space blocks everything do we not process -
		925	* if some form of movement is allowed, let objects
		926	* drop on that space.
		927	*/
		928	if (!drop_to_ground
		929	|| !map
		930	|| map->in_memory != MAP_ACTIVE
		931	|| map->no_drop
		932	|| ms ().move_block == MOVE_ALL)
		933	{
		934	while (inv)
		935	inv->destroy ();
		936	}
996	else	937	else
997	{	938	{ /* Put objects in inventory onto this space */
998	// highly annoying, but the only way to get it stable right now	939	while (inv)
999	op = freed.back ();
1000	freed.pop_back ();
1001	op->~object ();
1002	new ((void *) op) object;
1003	}
1004
1005	op->link ();
1006	return op;
1007	}
1008
1009	/*
1010	* free_object() frees everything allocated by an object, removes
1011	* it from the list of used objects, and puts it on the list of
1012	* free objects. The IS_FREED() flag is set in the object.
1013	* The object must have been removed by remove_ob() first for
1014	* this function to succeed.
1015	*
1016	* If free_inventory is set, free inventory as well. Else drop items in
1017	* inventory to the ground.
1018	*/
1019	void object::free (bool free_inventory)
1020	{
1021	if (QUERY_FLAG (this, FLAG_FREED))
1022	return;
1023
1024	if (QUERY_FLAG (this, FLAG_FRIENDLY))
1025	remove_friendly_object (this);
1026
1027	if (!QUERY_FLAG (this, FLAG_REMOVED))
1028	remove_ob (this);
1029
1030	SET_FLAG (this, FLAG_FREED);
1031
1032	if (more)
1033	{
1034	more->free (free_inventory);
1035	more = 0;
1036	}
1037
1038	if (inv)
1039	{
1040	/* Only if the space blocks everything do we not process -
1041	* if some form of movement is allowed, let objects
1042	* drop on that space.
1043	*/
1044	if (free_inventory || !map || map->in_memory != MAP_IN_MEMORY || GET_MAP_MOVE_BLOCK (map, x, y) == MOVE_ALL)
1045	{	940	{
1046	object *op = inv;	941	object *op = inv;
1047		942
1048	while (op)	943	if (op->flag [FLAG_STARTEQUIP]
1049	{	944	|| op->flag [FLAG_NO_DROP]
1050	object *tmp = op->below;	945	|| op->type == RUNE
1051	op->free (free_inventory);	946	|| op->type == TRAP
1052	op = tmp;	947	|| op->flag [FLAG_IS_A_TEMPLATE]
1053	}	948	|| op->flag [FLAG_DESTROY_ON_DEATH])
		949	op->destroy ();
		950	else
		951	map->insert (op, x, y);
1054	}	952	}
1055	else	953	}
1056	{ /* Put objects in inventory onto this space */	954	}
1057	object *op = inv;
1058		955
1059	while (op)	956	/*
1060	{	957	* Remove and free all objects in the inventory of the given object.
1061	object *tmp = op->below;	958	* Unlike destroy_inv, this assumes the *this is destroyed as well
1062		959	* well, so we can (and have to!) take shortcuts.
1063	remove_ob (op);	960	*/
1064		961	void
1065	if (QUERY_FLAG (op, FLAG_STARTEQUIP)	962	object::destroy_inv_fast ()
1066	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE || op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))	963	{
1067	free_object (op);	964	while (object *op = inv)
1068	else
1069	{
1070	op->x = x;
1071	op->y = y;
1072	insert_ob_in_map (op, map, 0, 0); /* Insert in same map as the envir */
1073	}
1074
1075	op = tmp;
1076	}
1077	}
1078	}	965	{
		966	// remove from object the fast way
		967	op->flag [FLAG_REMOVED] = true;
		968	op->env = 0;
		969	if ((inv = inv->below))
		970	inv->above = 0;
1079		971
1080	owner = 0;	972	// then destroy
		973	op->destroy ();
		974	}
		975	}
1081		976
1082	/* Remove object from the active list */	977	void
1083	speed = 0;	978	object::freelist_free (int count)
1084	update_ob_speed (this);	979	{
		980	while (count-- && freelist)
		981	{
		982	freelist_item *next = freelist->next;
		983	// count is being "destroyed"
1085		984
		985	sfree ((char *)freelist, sizeof (object));
		986
		987	freelist = next;
		988	--free_count;
		989	}
		990	}
		991
		992	object *
		993	object::create ()
		994	{
		995	object *op;
		996
		997	if (freelist)
		998	{
		999	freelist_item li = *freelist;
		1000	memset (freelist, 0, sizeof (object));
		1001
		1002	op = new (freelist) object;
		1003	op->count = li.count;
		1004
		1005	freelist = li.next;
		1006	--free_count;
		1007	}
		1008	else
		1009	{
		1010	void *ni = salloc0<char> (sizeof (object));
		1011
		1012	op = new(ni) object;
		1013
		1014	op->count = ++object_count;
		1015	}
		1016
		1017	op->link ();
		1018
		1019	return op;
		1020	}
		1021
		1022	void
		1023	object::do_delete ()
		1024	{
		1025	uint32_t count = this->count;
		1026
		1027	this->~object ();
		1028
		1029	freelist_item *li = (freelist_item *)this;
		1030	li->next = freelist;
		1031	li->count = count;
		1032
		1033	freelist = li;
		1034	++free_count;
		1035	}
		1036
		1037	static struct freed_map : maptile
		1038	{
		1039	freed_map ()
		1040	: maptile (3, 3)
		1041	{
		1042	path = "<freed objects map>";
		1043	name = "/internal/freed_objects_map";
		1044	no_drop = 1;
		1045	no_reset = 1;
		1046
		1047	in_memory = MAP_ACTIVE;
		1048	}
		1049
		1050	~freed_map ()
		1051	{
		1052	destroy ();
		1053	}
		1054	} freed_map; // freed objects are moved here to avoid crashes
		1055
		1056	void
		1057	object::do_destroy ()
		1058	{
		1059	if (flag [FLAG_IS_LINKED])
		1060	remove_link ();
		1061
		1062	if (flag [FLAG_FRIENDLY])
		1063	remove_friendly_object (this);
		1064
		1065	remove ();
		1066
		1067	attachable::do_destroy ();
		1068
		1069	deactivate ();
1086	unlink ();	1070	unlink ();
1087		1071
1088	mortals.push_back (this);	1072	flag [FLAG_FREED] = 1;
1089	}
1090		1073
1091	/*	1074	// hack to ensure that freed objects still have a valid map
1092	* sub_weight() recursively (outwards) subtracts a number from the	1075	map = &freed_map;
1093	* weight of an object (and what is carried by it's environment(s)).	1076	x = 1;
1094	*/	1077	y = 1;
1095		1078
1096	void	1079	if (more)
1097	sub_weight (object *op, signed long weight)
1098	{
1099	while (op != NULL)
1100	{
1101	if (op->type == CONTAINER)
1102	{
1103	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1104	}
1105	op->carrying -= weight;
1106	op = op->env;
1107	}	1080	{
1108	}	1081	more->destroy ();
		1082	more = 0;
		1083	}
1109		1084
1110	/* remove_ob(op):	1085	head = 0;
		1086
		1087	// clear those pointers that likely might cause circular references
		1088	owner = 0;
		1089	enemy = 0;
		1090	attacked_by = 0;
		1091	current_weapon = 0;
		1092	}
		1093
		1094	void
		1095	object::destroy ()
		1096	{
		1097	if (destroyed ())
		1098	return;
		1099
		1100	if (!is_head () && !head->destroyed ())
		1101	{
		1102	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1103	head->destroy ();
		1104	return;
		1105	}
		1106
		1107	destroy_inv_fast ();
		1108
		1109	if (is_head ())
		1110	if (sound_destroy)
		1111	play_sound (sound_destroy);
		1112	else if (flag [FLAG_MONSTER])
		1113	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1114
		1115	attachable::destroy ();
		1116	}
		1117
		1118	/* op->remove ():
1111	* This function removes the object op from the linked list of objects	1119	* This function removes the object op from the linked list of objects
1112	* which it is currently tied to. When this function is done, the	1120	* which it is currently tied to. When this function is done, the
1113	* object will have no environment. If the object previously had an	1121	* object will have no environment. If the object previously had an
1114	* environment, the x and y coordinates will be updated to	1122	* environment, the x and y coordinates will be updated to
1115	* the previous environment.	1123	* the previous environment.
1116	* Beware: This function is called from the editor as well!
1117	*/	1124	*/
1118
1119	void	1125	void
1120	remove_ob (object *op)	1126	object::do_remove ()
1121	{	1127	{
1122	object *	1128	if (flag [FLAG_REMOVED])
1123	tmp, *
1124	last = NULL;
1125	object *
1126	otmp;
1127
1128	tag_t
1129	tag;
1130	int
1131	check_walk_off;
1132	mapstruct *
1133	m;
1134
1135	sint16
1136	x,
1137	y;
1138
1139	if (QUERY_FLAG (op, FLAG_REMOVED))
1140	return;	1129	return;
1141		1130
1142	SET_FLAG (op, FLAG_REMOVED);	1131	INVOKE_OBJECT (REMOVE, this);
1143		1132
1144	if (op->more != NULL)	1133	flag [FLAG_REMOVED] = true;
1145	remove_ob (op->more);	1134
		1135	if (more)
		1136	more->remove ();
1146		1137
1147	/*	1138	/*
1148	* In this case, the object to be removed is in someones	1139	* In this case, the object to be removed is in someones
1149	* inventory.	1140	* inventory.
1150	*/	1141	*/
1151	if (op->env != NULL)	1142	if (env)
1152	{	1143	{
1153	if (op->nrof)	1144	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1154	sub_weight (op->env, op->weight * op->nrof);	1145	if (object *pl = visible_to ())
1155	else	1146	esrv_del_item (pl->contr, count);
1156	sub_weight (op->env, op->weight + op->carrying);	1147	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1157		1148
1158	/* NO_FIX_PLAYER is set when a great many changes are being	1149	adjust_weight (env, -total_weight ());
1159	* made to players inventory. If set, avoiding the call
1160	* to save cpu time.
1161	*/
1162	if ((otmp = is_player_inv (op->env)) != NULL && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1163	fix_player (otmp);
1164		1150
1165	if (op->above != NULL)	1151	object *pl = in_player ();
1166	op->above->below = op->below;
1167	else
1168	op->env->inv = op->below;
1169
1170	if (op->below != NULL)
1171	op->below->above = op->above;
1172		1152
1173	/* we set up values so that it could be inserted into	1153	/* we set up values so that it could be inserted into
1174	* the map, but we don't actually do that - it is up	1154	* the map, but we don't actually do that - it is up
1175	* to the caller to decide what we want to do.	1155	* to the caller to decide what we want to do.
1176	*/	1156	*/
1177	op->x = op->env->x, op->y = op->env->y;
1178	op->map = op->env->map;	1157	map = env->map;
1179	op->above = NULL, op->below = NULL;
1180	op->env = NULL;
1181	}
1182	else if (op->map)
1183	{
1184	x = op->x;	1158	x = env->x;
1185	y = op->y;	1159	y = env->y;
1186	m = get_map_from_coord (op->map, &x, &y);
1187		1160
1188	if (!m)	1161	// make sure cmov optimisation is applicable
		1162	*(above ? &above->below : &env->inv) = below;
		1163	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1164
		1165	above = 0;
		1166	below = 0;
		1167	env = 0;
		1168
		1169	if (pl && pl->is_player ())
1189	{	1170	{
1190	LOG (llevError, "remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",	1171	if (expect_false (pl->contr->combat_ob == this))
1191	op->map->path, op->x, op->y);
1192	/* in old days, we used to set x and y to 0 and continue.
1193	* it seems if we get into this case, something is probablye
1194	* screwed up and should be fixed.
1195	*/	1172	{
1196	abort ();	1173	pl->apply (pl->contr->combat_ob, AP_UNAPPLY);
		1174	pl->contr->combat_ob = 0;
		1175	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
		1176	}
		1177
		1178	if (expect_false (pl->contr->ranged_ob == this))
		1179	{
		1180	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY);
		1181	pl->contr->ranged_ob = 0;
		1182	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1183	}
		1184
		1185	pl->contr->queue_stats_update ();
		1186
		1187	if (expect_false (glow_radius) && pl->is_on_map ())
		1188	update_all_los (pl->map, pl->x, pl->y);
1197	}	1189	}
		1190	}
		1191	else if (map)
		1192	{
		1193	map->dirty = true;
		1194	mapspace &ms = this->ms ();
1198		1195
1199	if (op->map != m)	1196	if (object *pl = ms.player ())
1200	LOG (llevDebug, "remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1201	op->map->path, m->path, op->x, op->y, x, y);
1202
1203	/* Re did the following section of code - it looks like it had
1204	* lots of logic for things we no longer care about
1205	*/	1197	{
		1198	if (is_player ())
		1199	{
		1200	if (!flag [FLAG_WIZPASS])
		1201	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1202
		1203	// leaving a spot always closes any open container on the ground
		1204	if (container && !container->env)
		1205	// this causes spurious floorbox updates, but it ensures
		1206	// that the CLOSE event is being sent.
		1207	close_container ();
		1208
		1209	--map->players;
		1210	map->touch ();
		1211	}
		1212	else if (pl->container_ () == this)
		1213	{
		1214	// removing a container should close it
		1215	close_container ();
		1216	}
		1217	else
		1218	esrv_del_item (pl->contr, count);
		1219	}
1206		1220
1207	/* link the object above us */	1221	/* link the object above us */
1208	if (op->above)	1222	// re-link, make sure compiler can easily use cmove
1209	op->above->below = op->below;	1223	*(above ? &above->below : &ms.top) = below;
1210	else	1224	*(below ? &below->above : &ms.bot) = above;
1211	SET_MAP_TOP (m, x, y, op->below); /* we were top, set new top */
1212		1225
1213	/* Relink the object below us, if there is one */	1226	above = 0;
1214	if (op->below)	1227	below = 0;
1215	op->below->above = op->above;	1228
1216	else	1229	ms.invalidate ();
		1230
		1231	if (map->in_memory == MAP_SAVING)
		1232	return;
		1233
		1234	int check_walk_off = !flag [FLAG_NO_APPLY];
		1235
		1236	if (object *pl = ms.player ())
1217	{	1237	{
1218	/* Nothing below, which means we need to relink map object for this space	1238	if (pl->container_ () == this)
1219	* use translated coordinates in case some oddness with map tiling is	1239	/* If a container that the player is currently using somehow gets
1220	* evident	1240	* removed (most likely destroyed), update the player view
		1241	* appropriately.
1221	*/	1242	*/
1222	if (GET_MAP_OB (m, x, y) != op)	1243	pl->close_container ();
1223	{
1224	dump_object (op);
1225	LOG (llevError,
1226	"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);
1227	dump_object (GET_MAP_OB (m, x, y));
1228	LOG (llevError, "%s\n", errmsg);
1229	}
1230		1244
1231	SET_MAP_OB (m, x, y, op->above); /* goes on above it. */	1245	//TODO: the floorbox prev/next might need updating
		1246	//esrv_del_item (pl->contr, count);
		1247	//TODO: update floorbox to preserve ordering
		1248	if (pl->contr->ns)
		1249	pl->contr->ns->floorbox_update ();
1232	}	1250	}
1233		1251
1234	op->above = 0;	1252	if (check_walk_off)
1235	op->below = 0;	1253	for (object *above, *tmp = ms.bot; tmp; tmp = above)
1236
1237	if (op->map->in_memory == MAP_SAVING)
1238	return;
1239
1240	tag = op->count;
1241	check_walk_off = !QUERY_FLAG (op, FLAG_NO_APPLY);
1242
1243	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1244	{	1254	{
		1255	above = tmp->above;
		1256
1245	/* No point updating the players look faces if he is the object	1257	/* No point updating the players look faces if he is the object
1246	* being removed.	1258	* being removed.
1247	*/
1248
1249	if (tmp->type == PLAYER && tmp != op)
1250	{
1251	/* If a container that the player is currently using somehow gets
1252	* removed (most likely destroyed), update the player view
1253	* appropriately.
1254	*/	1259	*/
1255	if (tmp->container == op)
1256	{
1257	CLEAR_FLAG (op, FLAG_APPLIED);
1258	tmp->container = NULL;
1259	}
1260		1260
1261	tmp->contr->socket.update_look = 1;	1261	/* See if object moving off should effect something */
		1262	if ((move_type & tmp->move_off)
		1263	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
		1264	move_apply (tmp, this, 0);
1262	}	1265	}
1263		1266
1264	/* See if player moving off should effect something */	1267	if (affects_los ())
1265	if (check_walk_off && ((op->move_type & tmp->move_off) && (op->move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1266	{
1267	move_apply (tmp, op, NULL);
1268
1269	if (was_destroyed (op, tag))
1270	{
1271	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed " "leaving object\n", &tmp->name, &tmp->arch->name);
1272	}
1273	}
1274
1275	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1276
1277	if (tmp->above == tmp)
1278	tmp->above = NULL;
1279
1280	last = tmp;
1281	}
1282
1283	/* last == NULL of there are no objects on this space */
1284	if (last == NULL)
1285	{
1286	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1287	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1288	* those out anyways, and if there are any flags set right now, they won't
1289	* be correct anyways.
1290	*/
1291	SET_MAP_FLAGS (op->map, op->x, op->y, P_NEED_UPDATE);
1292	update_position (op->map, op->x, op->y);
1293	}
1294	else
1295	update_object (last, UP_OBJ_REMOVE);
1296
1297	if (QUERY_FLAG (op, FLAG_BLOCKSVIEW) || (op->glow_radius != 0))
1298	update_all_los (op->map, op->x, op->y);	1268	update_all_los (map, x, y);
1299	}	1269	}
1300	}	1270	}
1301		1271
1302	/*	1272	/*
1303	* merge_ob(op,top):	1273	* merge_ob(op,top):
…		…
1311	merge_ob (object *op, object *top)	1281	merge_ob (object *op, object *top)
1312	{	1282	{
1313	if (!op->nrof)	1283	if (!op->nrof)
1314	return 0;	1284	return 0;
1315		1285
1316	if (top == NULL)	1286	if (!top)
1317	for (top = op; top != NULL && top->above != NULL; top = top->above);	1287	for (top = op; top && top->above; top = top->above)
		1288	;
1318		1289
1319	for (; top != NULL; top = top->below)	1290	for (; top; top = top->below)
1320	{	1291	if (object::can_merge (op, top))
1321	if (top == op)
1322	continue;
1323	if (CAN_MERGE (op, top))
1324	{	1292	{
1325	top->nrof += op->nrof;	1293	top->nrof += op->nrof;
1326		1294
1327	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1295	if (object *pl = top->visible_to ())
1328	op->weight = 0; /* Don't want any adjustements now */	1296	esrv_update_item (UPD_NROF, pl, top);
1329	remove_ob (op);	1297
1330	free_object (op);	1298	op->weight = 0; // cancel the addition above
		1299	op->carrying = 0; // must be 0 already
		1300
		1301	op->destroy ();
		1302
1331	return top;	1303	return top;
1332	}	1304	}
1333	}
1334		1305
1335	return NULL;	1306	return 0;
1336	}	1307	}
1337		1308
		1309	void
		1310	object::expand_tail ()
		1311	{
		1312	if (more)
		1313	return;
		1314
		1315	object *prev = this;
		1316
		1317	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1318	{
		1319	object *op = at->instance ();
		1320
		1321	op->name = name;
		1322	op->name_pl = name_pl;
		1323	op->title = title;
		1324
		1325	op->head = this;
		1326	prev->more = op;
		1327
		1328	prev = op;
		1329	}
		1330	}
		1331
1338	/*	1332	/*
1339	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1333	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1340	* job preparing multi-part monsters	1334	* job preparing multi-part monsters.
1341	*/	1335	*/
1342	object *	1336	object *
1343	insert_ob_in_map_at (object *op, mapstruct *m, object *originator, int flag, int x, int y)	1337	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1344	{	1338	{
1345	object *tmp;	1339	op->remove ();
1346		1340
1347	if (op->head)
1348	op = op->head;
1349
1350	for (tmp = op; tmp; tmp = tmp->more)	1341	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1351	{	1342	{
1352	tmp->x = x + tmp->arch->clone.x;	1343	tmp->x = x + tmp->arch->x;
1353	tmp->y = y + tmp->arch->clone.y;	1344	tmp->y = y + tmp->arch->y;
1354	}	1345	}
1355		1346
1356	return insert_ob_in_map (op, m, originator, flag);	1347	return insert_ob_in_map (op, m, originator, flag);
1357	}	1348	}
1358		1349
…		…
1371	* Passing 0 for flag gives proper default values, so flag really only needs	1362	* Passing 0 for flag gives proper default values, so flag really only needs
1372	* to be set if special handling is needed.	1363	* to be set if special handling is needed.
1373	*	1364	*
1374	* Return value:	1365	* Return value:
1375	* new object if 'op' was merged with other object	1366	* new object if 'op' was merged with other object
1376	* NULL if 'op' was destroyed	1367	* NULL if there was an error (destroyed, blocked etc.)
1377	* just 'op' otherwise	1368	* just 'op' otherwise
1378	*/	1369	*/
1379
1380	object *	1370	object *
1381	insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1371	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1382	{	1372	{
1383	object *tmp, *top, *floor = NULL;	1373	op->remove ();
1384	sint16 x, y;
1385		1374
1386	if (QUERY_FLAG (op, FLAG_FREED))	1375	if (m == &freed_map)//D TODO: remove soon
1387	{	1376	{//D
1388	LOG (llevError, "Trying to insert freed object!\n");	1377	LOG (llevError | logBacktrace, "tries to insret object on freed objects map: %s", op->debug_desc ());//D
1389	return NULL;
1390	}	1378	}//D
1391
1392	if (m == NULL)
1393	{
1394	dump_object (op);
1395	LOG (llevError, "Trying to insert in null-map!\n%s\n", errmsg);
1396	return op;
1397	}
1398
1399	if (out_of_map (m, op->x, op->y))
1400	{
1401	dump_object (op);
1402	LOG (llevError, "Trying to insert object outside the map.\n%s\n", errmsg);
1403	#ifdef MANY_CORES
1404	/* Better to catch this here, as otherwise the next use of this object
1405	* is likely to cause a crash. Better to find out where it is getting
1406	* improperly inserted.
1407	*/
1408	abort ();
1409	#endif
1410	return op;
1411	}
1412
1413	if (!QUERY_FLAG (op, FLAG_REMOVED))
1414	{
1415	dump_object (op);
1416	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", errmsg);
1417	return op;
1418	}
1419
1420	if (op->more != NULL)
1421	{
1422	/* The part may be on a different map. */
1423
1424	object *more = op->more;
1425
1426	/* We really need the caller to normalize coordinates - if
1427	* we set the map, that doesn't work if the location is within
1428	* a map and this is straddling an edge. So only if coordinate
1429	* is clear wrong do we normalize it.
1430	*/
1431	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1432	more->map = get_map_from_coord (m, &more->x, &more->y);
1433	else if (!more->map)
1434	{
1435	/* For backwards compatibility - when not dealing with tiled maps,
1436	* more->map should always point to the parent.
1437	*/
1438	more->map = m;
1439	}
1440
1441	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
1442	{
1443	if (!op->head)
1444	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
1445
1446	return NULL;
1447	}
1448	}
1449
1450	CLEAR_FLAG (op, FLAG_REMOVED);
1451		1379
1452	/* Ideally, the caller figures this out. However, it complicates a lot	1380	/* Ideally, the caller figures this out. However, it complicates a lot
1453	* of areas of callers (eg, anything that uses find_free_spot would now	1381	* of areas of callers (eg, anything that uses find_free_spot would now
1454	* need extra work	1382	* need extra work
1455	*/	1383	*/
1456	op->map = get_map_from_coord (m, &op->x, &op->y);	1384	maptile *newmap = m;
1457	x = op->x;	1385	if (!xy_normalise (newmap, op->x, op->y))
1458	y = op->y;	1386	{
		1387	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
		1388	return 0;
		1389	}
		1390
		1391	if (object *more = op->more)
		1392	if (!insert_ob_in_map (more, m, originator, flag))
		1393	return 0;
		1394
		1395	op->flag [FLAG_REMOVED] = false;
		1396	op->env = 0;
		1397	op->map = newmap;
		1398
		1399	mapspace &ms = op->ms ();
1459		1400
1460	/* this has to be done after we translate the coordinates.	1401	/* this has to be done after we translate the coordinates.
1461	*/	1402	*/
1462	if (op->nrof && !(flag & INS_NO_MERGE))	1403	if (op->nrof && !(flag & INS_NO_MERGE))
1463	for (tmp = GET_MAP_OB (op->map, x, y); tmp != NULL; tmp = tmp->above)	1404	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1464	if (CAN_MERGE (op, tmp))	1405	if (object::can_merge (op, tmp))
1465	{	1406	{
		1407	// TODO: we actually want to update tmp, not op,
		1408	// but some caller surely breaks when we return tmp
		1409	// from here :/
1466	op->nrof += tmp->nrof;	1410	op->nrof += tmp->nrof;
1467	remove_ob (tmp);	1411	tmp->destroy ();
1468	free_object (tmp);
1469	}	1412	}
1470		1413
1471	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1414	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1472	CLEAR_FLAG (op, FLAG_INV_LOCKED);	1415	op->clr_flag (FLAG_INV_LOCKED);
1473		1416
1474	if (!QUERY_FLAG (op, FLAG_ALIVE))	1417	if (!op->flag [FLAG_ALIVE])
1475	CLEAR_FLAG (op, FLAG_NO_STEAL);	1418	op->clr_flag (FLAG_NO_STEAL);
1476		1419
1477	if (flag & INS_BELOW_ORIGINATOR)	1420	if (flag & INS_BELOW_ORIGINATOR)
1478	{	1421	{
1479	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)	1422	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
1480	{	1423	{
1481	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1424	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1482	abort ();	1425	abort ();
1483	}	1426	}
1484		1427
		1428	if (!originator->is_on_map ())
		1429	{
		1430	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1431	op->debug_desc (), originator->debug_desc ());
		1432	abort ();
		1433	}
		1434
1485	op->above = originator;	1435	op->above = originator;
1486	op->below = originator->below;	1436	op->below = originator->below;
1487
1488	if (op->below)
1489	op->below->above = op;
1490	else
1491	SET_MAP_OB (op->map, op->x, op->y, op);
1492
1493	/* since *below* originator, no need to update top */
1494	originator->below = op;	1437	originator->below = op;
		1438
		1439	*(op->below ? &op->below->above : &ms.bot) = op;
1495	}	1440	}
1496	else	1441	else
1497	{	1442	{
		1443	object *floor = 0;
		1444	object *top = ms.top;
		1445
1498	/* If there are other objects, then */	1446	/* If there are other objects, then */
1499	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))	1447	if (top)
1500	{	1448	{
1501	object *last = NULL;
1502
1503	/*	1449	/*
1504	* If there are multiple objects on this space, we do some trickier handling.	1450	* If there are multiple objects on this space, we do some trickier handling.
1505	* We've already dealt with merging if appropriate.	1451	* We've already dealt with merging if appropriate.
1506	* Generally, we want to put the new object on top. But if	1452	* Generally, we want to put the new object on top. But if
1507	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1453	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
…		…
1510	* once we get to them. This reduces the need to traverse over all of	1456	* once we get to them. This reduces the need to traverse over all of
1511	* them when adding another one - this saves quite a bit of cpu time	1457	* them when adding another one - this saves quite a bit of cpu time
1512	* when lots of spells are cast in one area. Currently, it is presumed	1458	* when lots of spells are cast in one area. Currently, it is presumed
1513	* that flying non pickable objects are spell objects.	1459	* that flying non pickable objects are spell objects.
1514	*/	1460	*/
1515		1461	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1516	while (top != NULL)
1517	{	1462	{
1518	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))	1463	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
1519	floor = top;	1464	floor = tmp;
1520		1465
1521	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))	1466	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1522	{	1467	{
1523	/* We insert above top, so we want this object below this */	1468	/* We insert above top, so we want this object below this */
1524	top = top->below;	1469	top = tmp->below;
1525	break;	1470	break;
1526	}	1471	}
1527		1472
1528	last = top;
1529	top = top->above;	1473	top = tmp;
1530	}	1474	}
1531
1532	/* Don't want top to be NULL, so set it to the last valid object */
1533	top = last;
1534		1475
1535	/* We let update_position deal with figuring out what the space	1476	/* We let update_position deal with figuring out what the space
1536	* looks like instead of lots of conditions here.	1477	* looks like instead of lots of conditions here.
1537	* makes things faster, and effectively the same result.	1478	* makes things faster, and effectively the same result.
1538	*/	1479	*/
1539		1480
1540	/* Have object 'fall below' other objects that block view.	1481	/* Have object 'fall below' other objects that block view.
1541	* Unless those objects are exits, type 66	1482	* Unless those objects are exits.
1542	* If INS_ON_TOP is used, don't do this processing	1483	* If INS_ON_TOP is used, don't do this processing
1543	* Need to find the object that in fact blocks view, otherwise	1484	* Need to find the object that in fact blocks view, otherwise
1544	* stacking is a bit odd.	1485	* stacking is a bit odd.
1545	*/	1486	*/
1546	if (!(flag & INS_ON_TOP) &&	1487	if (!(flag & INS_ON_TOP)
1547	(get_map_flags (op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))	1488	&& ms.flags () & P_BLOCKSVIEW
		1489	&& (op->face && !faces [op->face].visibility))
1548	{	1490	{
		1491	object *last;
		1492
1549	for (last = top; last != floor; last = last->below)	1493	for (last = top; last != floor; last = last->below)
1550	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))	1494	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
1551	break;	1495	break;
		1496
1552	/* Check to see if we found the object that blocks view,	1497	/* Check to see if we found the object that blocks view,
1553	* and make sure we have a below pointer for it so that	1498	* and make sure we have a below pointer for it so that
1554	* we can get inserted below this one, which requires we	1499	* we can get inserted below this one, which requires we
1555	* set top to the object below us.	1500	* set top to the object below us.
1556	*/	1501	*/
1557	if (last && last->below && last != floor)	1502	if (last && last->below && last != floor)
1558	top = last->below;	1503	top = last->below;
1559	}	1504	}
1560	} /* If objects on this space */	1505	} /* If objects on this space */
1561		1506
1562	if (flag & INS_MAP_LOAD)
1563	top = GET_MAP_TOP (op->map, op->x, op->y);
1564
1565	if (flag & INS_ABOVE_FLOOR_ONLY)	1507	if (flag & INS_ABOVE_FLOOR_ONLY)
1566	top = floor;	1508	top = floor;
1567		1509
1568	/* Top is the object that our object (op) is going to get inserted above.	1510	// insert object above top, or bottom-most if top = 0
1569	*/
1570
1571	/* First object on this space */
1572	if (!top)	1511	if (!top)
1573	{	1512	{
1574	op->above = GET_MAP_OB (op->map, op->x, op->y);
1575
1576	if (op->above)
1577	op->above->below = op;
1578
1579	op->below = NULL;	1513	op->below = 0;
1580	SET_MAP_OB (op->map, op->x, op->y, op);	1514	op->above = ms.bot;
		1515	ms.bot = op;
		1516
		1517	*(op->above ? &op->above->below : &ms.top) = op;
1581	}	1518	}
1582	else	1519	else
1583	{ /* get inserted into the stack above top */	1520	{
1584	op->above = top->above;	1521	op->above = top->above;
1585
1586	if (op->above)
1587	op->above->below = op;	1522	top->above = op;
1588		1523
1589	op->below = top;	1524	op->below = top;
1590	top->above = op;	1525	*(op->above ? &op->above->below : &ms.top) = op;
1591	}	1526	}
		1527	}
1592		1528
1593	if (op->above == NULL)	1529	if (op->is_player ())
1594	SET_MAP_TOP (op->map, op->x, op->y, op);	1530	{
1595	} /* else not INS_BELOW_ORIGINATOR */
1596
1597	if (op->type == PLAYER)
1598	op->contr->do_los = 1;	1531	op->contr->do_los = 1;
		1532	++op->map->players;
		1533	op->map->touch ();
		1534	}
1599		1535
1600	/* If we have a floor, we know the player, if any, will be above	1536	op->map->dirty = true;
1601	* it, so save a few ticks and start from there.	1537
1602	*/	1538	if (object *pl = ms.player ())
1603	if (!(flag & INS_MAP_LOAD))	1539	//TODO: the floorbox prev/next might need updating
1604	for (tmp = floor ? floor : GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)	1540	//esrv_send_item (pl, op);
1605	if (tmp->type == PLAYER)	1541	//TODO: update floorbox to preserve ordering
1606	tmp->contr->socket.update_look = 1;	1542	if (pl->contr->ns)
		1543	pl->contr->ns->floorbox_update ();
1607		1544
1608	/* If this object glows, it may affect lighting conditions that are	1545	/* If this object glows, it may affect lighting conditions that are
1609	* visible to others on this map. But update_all_los is really	1546	* visible to others on this map. But update_all_los is really
1610	* an inefficient way to do this, as it means los for all players	1547	* an inefficient way to do this, as it means los for all players
1611	* on the map will get recalculated. The players could very well	1548	* on the map will get recalculated. The players could very well
1612	* be far away from this change and not affected in any way -	1549	* be far away from this change and not affected in any way -
1613	* this should get redone to only look for players within range,	1550	* this should get redone to only look for players within range,
1614	* or just updating the P_NEED_UPDATE for spaces within this area	1551	* or just updating the P_UPTODATE for spaces within this area
1615	* of effect may be sufficient.	1552	* of effect may be sufficient.
1616	*/	1553	*/
1617	if (MAP_DARKNESS (op->map) && (op->glow_radius != 0))	1554	if (op->affects_los ())
		1555	{
		1556	op->ms ().invalidate ();
1618	update_all_los (op->map, op->x, op->y);	1557	update_all_los (op->map, op->x, op->y);
		1558	}
1619		1559
1620	/* updates flags (blocked, alive, no magic, etc) for this map space */	1560	/* updates flags (blocked, alive, no magic, etc) for this map space */
1621	update_object (op, UP_OBJ_INSERT);	1561	update_object (op, UP_OBJ_INSERT);
1622		1562
		1563	INVOKE_OBJECT (INSERT, op);
		1564
1623	/* Don't know if moving this to the end will break anything. However,	1565	/* Don't know if moving this to the end will break anything. However,
1624	* we want to have update_look set above before calling this.	1566	* we want to have floorbox_update called before calling this.
1625	*	1567	*
1626	* check_move_on() must be after this because code called from	1568	* check_move_on() must be after this because code called from
1627	* check_move_on() depends on correct map flags (so functions like	1569	* check_move_on() depends on correct map flags (so functions like
1628	* blocked() and wall() work properly), and these flags are updated by	1570	* blocked() and wall() work properly), and these flags are updated by
1629	* update_object().	1571	* update_object().
1630	*/	1572	*/
1631		1573
1632	/* if this is not the head or flag has been passed, don't check walk on status */	1574	/* if this is not the head or flag has been passed, don't check walk on status */
1633	if (!(flag & INS_NO_WALK_ON) && !op->head)	1575	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
1634	{	1576	{
1635	if (check_move_on (op, originator))	1577	if (check_move_on (op, originator))
1636	return NULL;	1578	return 0;
1637		1579
1638	/* If we are a multi part object, lets work our way through the check	1580	/* If we are a multi part object, lets work our way through the check
1639	* walk on's.	1581	* walk on's.
1640	*/	1582	*/
1641	for (tmp = op->more; tmp != NULL; tmp = tmp->more)	1583	for (object *tmp = op->more; tmp; tmp = tmp->more)
1642	if (check_move_on (tmp, originator))	1584	if (check_move_on (tmp, originator))
1643	return NULL;	1585	return 0;
1644	}	1586	}
1645		1587
1646	return op;	1588	return op;
1647	}	1589	}
1648		1590
1649	/* this function inserts an object in the map, but if it	1591	/* this function inserts an object in the map, but if it
1650	* finds an object of its own type, it'll remove that one first.	1592	* finds an object of its own type, it'll remove that one first.
1651	* op is the object to insert it under: supplies x and the map.	1593	* op is the object to insert it under: supplies x and the map.
1652	*/	1594	*/
1653	void	1595	void
1654	replace_insert_ob_in_map (const char *arch_string, object *op)	1596	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1655	{	1597	{
1656	object *
1657	tmp;
1658	object *
1659	tmp1;
1660
1661	/* first search for itself and remove any old instances */	1598	/* first search for itself and remove any old instances */
1662		1599
1663	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)	1600	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1664	{
1665	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */	1601	if (tmp->arch->archname == archname) /* same archetype */
1666	{	1602	tmp->destroy ();
1667	remove_ob (tmp);
1668	free_object (tmp);
1669	}
1670	}
1671		1603
1672	tmp1 = arch_to_object (find_archetype (arch_string));	1604	object *tmp = archetype::find (archname)->instance ();
1673		1605
1674	tmp1->x = op->x;	1606	tmp->x = op->x;
1675	tmp1->y = op->y;	1607	tmp->y = op->y;
		1608
1676	insert_ob_in_map (tmp1, op->map, op, 0);	1609	insert_ob_in_map (tmp, op->map, op, 0);
1677	}	1610	}
1678
1679	/*
1680	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1681	* is returned contains nr objects, and the remaining parts contains
1682	* the rest (or is removed and freed if that number is 0).
1683	* On failure, NULL is returned, and the reason put into the
1684	* global static errmsg array.
1685	*/
1686		1611
1687	object *	1612	object *
1688	get_split_ob (object *orig_ob, uint32 nr)	1613	object::insert_at (object *where, object *originator, int flags)
1689	{	1614	{
1690	object *	1615	if (where->env)
1691	newob;	1616	return where->env->insert (this);
1692	int	1617	else
1693	is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1618	return where->map->insert (this, where->x, where->y, originator, flags);
1694
1695	if (orig_ob->nrof < nr)
1696	{
1697	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1698	return NULL;
1699	}
1700
1701	newob = object_create_clone (orig_ob);
1702
1703	if ((orig_ob->nrof -= nr) < 1)
1704	{
1705	if (!is_removed)
1706	remove_ob (orig_ob);
1707	free_object2 (orig_ob, 1);
1708	}
1709	else if (!is_removed)
1710	{
1711	if (orig_ob->env != NULL)
1712	sub_weight (orig_ob->env, orig_ob->weight * nr);
1713	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
1714	{
1715	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1716	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1717	return NULL;
1718	}
1719	}
1720
1721	newob->nrof = nr;
1722
1723	return newob;
1724	}	1619	}
1725		1620
		1621	// check whether we can put this into the map, respect max_volume, max_items
		1622	bool
		1623	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1624	{
		1625	mapspace &ms = m->at (x, y);
		1626
		1627	int items = ms.items ();
		1628
		1629	if (!items // testing !items ensures we can drop at least one item
		1630	|| (items < m->max_items
		1631	&& ms.volume () < m->max_volume))
		1632	return true;
		1633
		1634	if (originator && originator->is_player ())
		1635	originator->contr->failmsgf (
		1636	"No matter how hard you try, you just cannot put the %s here H<Try to remove some items from the floor first.>",
		1637	query_name ()
		1638	);
		1639
		1640	return false;
		1641	}
		1642
1726	/*	1643	/*
1727	* decrease_ob_nr(object, number) decreases a specified number from	1644	* decrease(object, number) decreases a specified number from
1728	* the amount of an object. If the amount reaches 0, the object	1645	* the amount of an object. If the amount reaches 0, the object
1729	* is subsequently removed and freed.	1646	* is subsequently removed and freed.
1730	*	1647	*
1731	* Return value: 'op' if something is left, NULL if the amount reached 0	1648	* Return value: 'op' if something is left, NULL if the amount reached 0
1732	*/	1649	*/
		1650	bool
		1651	object::decrease (sint32 nr)
		1652	{
		1653	if (!nr)
		1654	return true;
1733		1655
		1656	nr = min (nr, nrof);
		1657
		1658	if (nrof > nr)
		1659	{
		1660	nrof -= nr;
		1661	adjust_weight (env, -weight * max (1, nr)); // carrying == 0
		1662
		1663	if (object *pl = visible_to ())
		1664	esrv_update_item (UPD_NROF, pl, this);
		1665
		1666	return true;
		1667	}
		1668	else
		1669	{
		1670	destroy ();
		1671	return false;
		1672	}
		1673	}
		1674
		1675	/*
		1676	* split(ob,nr) splits up ob into two parts. The part which
		1677	* is returned contains nr objects, and the remaining parts contains
		1678	* the rest (or is removed and returned if that number is 0).
		1679	* On failure, NULL is returned.
		1680	*/
1734	object *	1681	object *
1735	decrease_ob_nr (object *op, uint32 i)	1682	object::split (sint32 nr)
1736	{	1683	{
1737	object *tmp;	1684	int have = number_of ();
1738	player *pl;
1739		1685
1740	if (i == 0) /* objects with op->nrof require this check */	1686	if (have < nr)
1741	return op;	1687	return 0;
1742		1688	else if (have == nr)
1743	if (i > op->nrof)
1744	i = op->nrof;
1745
1746	if (QUERY_FLAG (op, FLAG_REMOVED))
1747	op->nrof -= i;
1748	else if (op->env != NULL)
1749	{	1689	{
1750	/* is this object in the players inventory, or sub container
1751	* therein?
1752	*/
1753	tmp = is_player_inv (op->env);
1754	/* nope. Is this a container the player has opened?
1755	* If so, set tmp to that player.
1756	* IMO, searching through all the players will mostly
1757	* likely be quicker than following op->env to the map,
1758	* and then searching the map for a player.
1759	*/
1760	if (!tmp)
1761	{
1762	for (pl = first_player; pl; pl = pl->next)
1763	if (pl->ob->container == op->env)
1764	break;
1765	if (pl)
1766	tmp = pl->ob;
1767	else
1768	tmp = NULL;
1769	}
1770
1771	if (i < op->nrof)
1772	{
1773	sub_weight (op->env, op->weight * i);
1774	op->nrof -= i;
1775	if (tmp)
1776	{
1777	esrv_send_item (tmp, op);
1778	}
1779	}
1780	else
1781	{
1782	remove_ob (op);	1690	remove ();
1783	op->nrof = 0;	1691	return this;
1784	if (tmp)
1785	{
1786	esrv_del_item (tmp->contr, op->count);
1787	}
1788	}
1789	}	1692	}
1790	else	1693	else
1791	{	1694	{
1792	object *above = op->above;	1695	decrease (nr);
1793		1696
1794	if (i < op->nrof)	1697	object *op = deep_clone ();
1795	op->nrof -= i;	1698	op->nrof = nr;
1796	else
1797	{
1798	remove_ob (op);
1799	op->nrof = 0;
1800	}
1801
1802	/* Since we just removed op, op->above is null */
1803	for (tmp = above; tmp != NULL; tmp = tmp->above)
1804	if (tmp->type == PLAYER)
1805	{
1806	if (op->nrof)
1807	esrv_send_item (tmp, op);
1808	else
1809	esrv_del_item (tmp->contr, op->count);
1810	}
1811	}
1812
1813	if (op->nrof)
1814	return op;	1699	return op;
1815	else
1816	{	1700	}
1817	free_object (op);	1701	}
		1702
		1703	object *
		1704	insert_ob_in_ob (object *op, object *where)
		1705	{
		1706	if (!where)
		1707	{
		1708	char *dump = dump_object (op);
		1709	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1710	free (dump);
1818	return NULL;	1711	return op;
1819	}
1820	}
1821
1822	/*
1823	* add_weight(object, weight) adds the specified weight to an object,
1824	* and also updates how much the environment(s) is/are carrying.
1825	*/
1826
1827	void
1828	add_weight (object *op, signed long weight)
1829	{
1830	while (op != NULL)
1831	{	1712	}
1832	if (op->type == CONTAINER)
1833	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1834		1713
1835	op->carrying += weight;	1714	if (where->head_ () != where)
1836	op = op->env;
1837	}	1715	{
1838	}	1716	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1717	where = where->head;
		1718	}
1839		1719
		1720	return where->insert (op);
		1721	}
		1722
1840	/*	1723	/*
1841	* insert_ob_in_ob(op,environment):	1724	* env->insert (op)
1842	* This function inserts the object op in the linked list	1725	* This function inserts the object op in the linked list
1843	* inside the object environment.	1726	* inside the object environment.
1844	*	1727	*
1845	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1846	* the inventory at the last position or next to other objects of the same
1847	* type.
1848	* Frank: Now sorted by type, archetype and magic!
1849	*
1850	* The function returns now pointer to inserted item, and return value can	1728	* The function returns now pointer to inserted item, and return value can
1851	* be != op, if items are merged. -Tero	1729	* be != op, if items are merged. -Tero
1852	*/	1730	*/
1853
1854	object *	1731	object *
1855	insert_ob_in_ob (object *op, object *where)	1732	object::insert (object *op)
1856	{	1733	{
1857	object *
1858	tmp, *
1859	otmp;
1860
1861	if (!QUERY_FLAG (op, FLAG_REMOVED))
1862	{
1863	dump_object (op);
1864	LOG (llevError, "Trying to insert (ob) inserted object.\n%s\n", errmsg);
1865	return op;
1866	}
1867
1868	if (where == NULL)
1869	{
1870	dump_object (op);
1871	LOG (llevError, "Trying to put object in NULL.\n%s\n", errmsg);
1872	return op;
1873	}
1874
1875	if (where->head)
1876	{
1877	LOG (llevDebug, "Warning: Tried to insert object wrong part of multipart object.\n");
1878	where = where->head;
1879	}
1880
1881	if (op->more)	1734	if (op->more)
1882	{	1735	{
1883	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);	1736	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1884	return op;	1737	return op;
1885	}	1738	}
1886		1739
1887	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);	1740	op->remove ();
1888	CLEAR_FLAG (op, FLAG_REMOVED);	1741
		1742	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1743
1889	if (op->nrof)	1744	if (op->nrof)
1890	{
1891	for (tmp = where->inv; tmp != NULL; tmp = tmp->below)	1745	for (object *tmp = inv; tmp; tmp = tmp->below)
1892	if (CAN_MERGE (tmp, op))	1746	if (object::can_merge (tmp, op))
1893	{	1747	{
1894	/* return the original object and remove inserted object	1748	/* return the original object and remove inserted object
1895	(client needs the original object) */	1749	(client needs the original object) */
1896	tmp->nrof += op->nrof;	1750	tmp->nrof += op->nrof;
1897	/* Weight handling gets pretty funky. Since we are adding to	1751
1898	* tmp->nrof, we need to increase the weight.	1752	if (object *pl = tmp->visible_to ())
1899	*/	1753	esrv_update_item (UPD_NROF, pl, tmp);
1900	add_weight (where, op->weight * op->nrof);	1754
1901	SET_FLAG (op, FLAG_REMOVED);	1755	adjust_weight (this, op->total_weight ());
1902	free_object (op); /* free the inserted object */	1756
		1757	op->destroy ();
1903	op = tmp;	1758	op = tmp;
1904	remove_ob (op); /* and fix old object's links */	1759	goto inserted;
1905	CLEAR_FLAG (op, FLAG_REMOVED);
1906	break;
1907	}	1760	}
1908		1761
1909	/* I assume combined objects have no inventory	1762	op->owner = 0; // it's his/hers now. period.
1910	* We add the weight - this object could have just been removed
1911	* (if it was possible to merge). calling remove_ob will subtract
1912	* the weight, so we need to add it in again, since we actually do
1913	* the linking below
1914	*/
1915	add_weight (where, op->weight * op->nrof);
1916	}
1917	else
1918	add_weight (where, (op->weight + op->carrying));
1919
1920	otmp = is_player_inv (where);
1921	if (otmp && otmp->contr != NULL)
1922	{
1923	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1924	fix_player (otmp);
1925	}
1926
1927	op->map = NULL;	1763	op->map = 0;
1928	op->env = where;	1764	op->x = 0;
		1765	op->y = 0;
		1766
1929	op->above = NULL;	1767	op->above = 0;
1930	op->below = NULL;	1768	op->below = inv;
1931	op->x = 0, op->y = 0;	1769	op->env = this;
1932		1770
		1771	if (inv)
		1772	inv->above = op;
		1773
		1774	inv = op;
		1775
		1776	op->flag [FLAG_REMOVED] = 0;
		1777
		1778	if (object *pl = op->visible_to ())
		1779	esrv_send_item (pl, op);
		1780
		1781	adjust_weight (this, op->total_weight ());
		1782
		1783	inserted:
1933	/* reset the light list and los of the players on the map */	1784	/* reset the light list and los of the players on the map */
1934	if ((op->glow_radius != 0) && where->map)	1785	if (op->glow_radius && is_on_map ())
1935	{
1936	#ifdef DEBUG_LIGHTS
1937	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1938	#endif /* DEBUG_LIGHTS */
1939	if (MAP_DARKNESS (where->map))
1940	update_all_los (where->map, where->x, where->y);
1941	}	1786	{
1942		1787	update_stats ();
1943	/* Client has no idea of ordering so lets not bother ordering it here.	1788	update_all_los (map, x, y);
1944	* It sure simplifies this function...
1945	*/
1946	if (where->inv == NULL)
1947	where->inv = op;
1948	else
1949	{	1789	}
1950	op->below = where->inv;	1790	else if (is_player ())
1951	op->below->above = op;	1791	// if this is a player's inventory, update stats
1952	where->inv = op;	1792	contr->queue_stats_update ();
1953	}	1793
		1794	INVOKE_OBJECT (INSERT, this);
		1795
1954	return op;	1796	return op;
1955	}	1797	}
1956		1798
1957	/*	1799	/*
1958	* Checks if any objects has a move_type that matches objects	1800	* Checks if any objects has a move_type that matches objects
…		…
1972	*	1814	*
1973	* MSW 2001-07-08: Check all objects on space, not just those below	1815	* MSW 2001-07-08: Check all objects on space, not just those below
1974	* object being inserted. insert_ob_in_map may not put new objects	1816	* object being inserted. insert_ob_in_map may not put new objects
1975	* on top.	1817	* on top.
1976	*/	1818	*/
1977
1978	int	1819	int
1979	check_move_on (object *op, object *originator)	1820	check_move_on (object *op, object *originator)
1980	{	1821	{
1981	object *	1822	if (op->flag [FLAG_NO_APPLY])
1982	tmp;
1983	tag_t
1984	tag;
1985	mapstruct *
1986	m = op->map;
1987	int
1988	x = op->x, y = op->y;
1989
1990	MoveType
1991	move_on,
1992	move_slow,
1993	move_block;
1994
1995	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1996	return 0;	1823	return 0;
1997		1824
1998	tag = op->count;	1825	object *tmp;
		1826	maptile *m = op->map;
		1827	int x = op->x, y = op->y;
1999		1828
2000	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);	1829	mapspace &ms = m->at (x, y);
2001	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);	1830
2002	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);	1831	ms.update ();
		1832
		1833	MoveType move_on = ms.move_on;
		1834	MoveType move_slow = ms.move_slow;
		1835	MoveType move_block = ms.move_block;
2003		1836
2004	/* if nothing on this space will slow op down or be applied,	1837	/* if nothing on this space will slow op down or be applied,
2005	* no need to do checking below. have to make sure move_type	1838	* no need to do checking below. have to make sure move_type
2006	* is set, as lots of objects don't have it set - we treat that	1839	* is set, as lots of objects don't have it set - we treat that
2007	* as walking.	1840	* as walking.
…		…
2018	return 0;	1851	return 0;
2019		1852
2020	/* The objects have to be checked from top to bottom.	1853	/* The objects have to be checked from top to bottom.
2021	* Hence, we first go to the top:	1854	* Hence, we first go to the top:
2022	*/	1855	*/
2023		1856	for (object *next, *tmp = ms.top; tmp; tmp = next)
2024	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL && tmp->above != NULL; tmp = tmp->above)
2025	{
2026	/* Trim the search when we find the first other spell effect
2027	* this helps performance so that if a space has 50 spell objects,
2028	* we don't need to check all of them.
2029	*/
2030	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
2031	break;
2032	}	1857	{
		1858	next = tmp->below;
2033		1859
2034	for (; tmp; tmp = tmp->below)
2035	{
2036	if (tmp == op)	1860	if (tmp == op)
2037	continue; /* Can't apply yourself */	1861	continue; /* Can't apply yourself */
2038		1862
2039	/* Check to see if one of the movement types should be slowed down.	1863	/* Check to see if one of the movement types should be slowed down.
2040	* Second check makes sure that the movement types not being slowed	1864	* Second check makes sure that the movement types not being slowed
2041	* (~slow_move) is not blocked on this space - just because the	1865	* (~slow_move) is not blocked on this space - just because the
2042	* space doesn't slow down swimming (for example), if you can't actually	1866	* space doesn't slow down swimming (for example), if you can't actually
2043	* swim on that space, can't use it to avoid the penalty.	1867	* swim on that space, can't use it to avoid the penalty.
2044	*/	1868	*/
2045	if (!QUERY_FLAG (op, FLAG_WIZPASS))	1869	if (!op->flag [FLAG_WIZPASS])
2046	{	1870	{
2047	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1871	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
2048	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))	1872	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
2049	{	1873	{
2050
2051	float
2052	diff = tmp->move_slow_penalty * FABS (op->speed);	1874	float diff = tmp->move_slow_penalty * fabs (op->speed);
2053		1875
2054	if (op->type == PLAYER)	1876	if (op->is_player ())
2055	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||	1877	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
2056	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))	1878	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
2057	diff /= 4.0;	1879	diff /= 4.0;
2058		1880
2059	op->speed_left -= diff;	1881	op->speed_left -= diff;
2060	}	1882	}
2061	}	1883	}
…		…
2064	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1886	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
2065	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))	1887	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
2066	{	1888	{
2067	move_apply (tmp, op, originator);	1889	move_apply (tmp, op, originator);
2068		1890
2069	if (was_destroyed (op, tag))	1891	if (op->destroyed ())
2070	return 1;	1892	return 1;
2071		1893
2072	/* what the person/creature stepped onto has moved the object	1894	/* what the person/creature stepped onto has moved the object
2073	* someplace new. Don't process any further - if we did,	1895	* someplace new. Don't process any further - if we did,
2074	* have a feeling strange problems would result.	1896	* have a feeling strange problems would result.
…		…
2084	/*	1906	/*
2085	* present_arch(arch, map, x, y) searches for any objects with	1907	* present_arch(arch, map, x, y) searches for any objects with
2086	* a matching archetype at the given map and coordinates.	1908	* a matching archetype at the given map and coordinates.
2087	* The first matching object is returned, or NULL if none.	1909	* The first matching object is returned, or NULL if none.
2088	*/	1910	*/
2089
2090	object *	1911	object *
2091	present_arch (const archetype *at, mapstruct *m, int x, int y)	1912	present_arch (const archetype *at, maptile *m, int x, int y)
2092	{	1913	{
2093	object *
2094	tmp;
2095
2096	if (m == NULL || out_of_map (m, x, y))	1914	if (!m || out_of_map (m, x, y))
2097	{	1915	{
2098	LOG (llevError, "Present_arch called outside map.\n");	1916	LOG (llevError, "Present_arch called outside map.\n");
2099	return NULL;	1917	return NULL;
2100	}	1918	}
2101	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)	1919
2102	if (tmp->arch == at)	1920	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1921	if (tmp->arch->archname == at->archname)
2103	return tmp;	1922	return tmp;
		1923
2104	return NULL;	1924	return NULL;
2105	}	1925	}
2106		1926
2107	/*	1927	/*
2108	* present(type, map, x, y) searches for any objects with	1928	* present(type, map, x, y) searches for any objects with
2109	* a matching type variable at the given map and coordinates.	1929	* a matching type variable at the given map and coordinates.
2110	* The first matching object is returned, or NULL if none.	1930	* The first matching object is returned, or NULL if none.
2111	*/	1931	*/
2112
2113	object *	1932	object *
2114	present (unsigned char type, mapstruct *m, int x, int y)	1933	present (unsigned char type, maptile *m, int x, int y)
2115	{	1934	{
2116	object *
2117	tmp;
2118
2119	if (out_of_map (m, x, y))	1935	if (out_of_map (m, x, y))
2120	{	1936	{
2121	LOG (llevError, "Present called outside map.\n");	1937	LOG (llevError, "Present called outside map.\n");
2122	return NULL;	1938	return NULL;
2123	}	1939	}
2124	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)	1940
		1941	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
2125	if (tmp->type == type)	1942	if (tmp->type == type)
2126	return tmp;	1943	return tmp;
		1944
2127	return NULL;	1945	return NULL;
2128	}	1946	}
2129		1947
2130	/*	1948	/*
2131	* present_in_ob(type, object) searches for any objects with	1949	* present_in_ob(type, object) searches for any objects with
2132	* a matching type variable in the inventory of the given object.	1950	* a matching type variable in the inventory of the given object.
2133	* The first matching object is returned, or NULL if none.	1951	* The first matching object is returned, or NULL if none.
2134	*/	1952	*/
2135
2136	object *	1953	object *
2137	present_in_ob (unsigned char type, const object *op)	1954	present_in_ob (unsigned char type, const object *op)
2138	{	1955	{
2139	object *
2140	tmp;
2141
2142	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1956	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2143	if (tmp->type == type)	1957	if (tmp->type == type)
2144	return tmp;	1958	return tmp;
		1959
2145	return NULL;	1960	return NULL;
2146	}	1961	}
2147		1962
2148	/*	1963	/*
2149	* present_in_ob (type, str, object) searches for any objects with	1964	* present_in_ob (type, str, object) searches for any objects with
…		…
2157	* str is the string to match against. Note that we match against	1972	* str is the string to match against. Note that we match against
2158	* the object name, not the archetype name. this is so that the	1973	* the object name, not the archetype name. this is so that the
2159	* spell code can use one object type (force), but change it's name	1974	* spell code can use one object type (force), but change it's name
2160	* to be unique.	1975	* to be unique.
2161	*/	1976	*/
2162
2163	object *	1977	object *
2164	present_in_ob_by_name (int type, const char *str, const object *op)	1978	present_in_ob_by_name (int type, const char *str, const object *op)
2165	{	1979	{
2166	object *
2167	tmp;
2168
2169	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1980	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2170	{
2171	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))	1981	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2172	return tmp;	1982	return tmp;
2173	}	1983
2174	return NULL;	1984	return 0;
2175	}	1985	}
2176		1986
2177	/*	1987	/*
2178	* present_arch_in_ob(archetype, object) searches for any objects with	1988	* present_arch_in_ob(archetype, object) searches for any objects with
2179	* a matching archetype in the inventory of the given object.	1989	* a matching archetype in the inventory of the given object.
2180	* The first matching object is returned, or NULL if none.	1990	* The first matching object is returned, or NULL if none.
2181	*/	1991	*/
2182
2183	object *	1992	object *
2184	present_arch_in_ob (const archetype *at, const object *op)	1993	present_arch_in_ob (const archetype *at, const object *op)
2185	{	1994	{
2186	object *
2187	tmp;
2188
2189	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1995	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2190	if (tmp->arch == at)	1996	if (tmp->arch->archname == at->archname)
2191	return tmp;	1997	return tmp;
		1998
2192	return NULL;	1999	return NULL;
2193	}	2000	}
2194		2001
2195	/*	2002	/*
2196	* activate recursively a flag on an object inventory	2003	* activate recursively a flag on an object inventory
2197	*/	2004	*/
2198	void	2005	void
2199	flag_inv (object *op, int flag)	2006	flag_inv (object *op, int flag)
2200	{	2007	{
2201	object *
2202	tmp;
2203
2204	if (op->inv)
2205	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	2008	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2206	{	2009	{
2207	SET_FLAG (tmp, flag);	2010	tmp->set_flag (flag);
2208	flag_inv (tmp, flag);	2011	flag_inv (tmp, flag);
2209	}	2012	}
2210	} /*	2013	}
		2014
		2015	/*
2211	* desactivate recursively a flag on an object inventory	2016	* deactivate recursively a flag on an object inventory
2212	*/	2017	*/
2213	void	2018	void
2214	unflag_inv (object *op, int flag)	2019	unflag_inv (object *op, int flag)
2215	{	2020	{
2216	object *
2217	tmp;
2218
2219	if (op->inv)
2220	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	2021	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2221	{	2022	{
2222	CLEAR_FLAG (tmp, flag);	2023	tmp->clr_flag (flag);
2223	unflag_inv (tmp, flag);	2024	unflag_inv (tmp, flag);
2224	}	2025	}
2225	}
2226
2227	/*
2228	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2229	* all it's inventory (recursively).
2230	* If checksums are used, a player will get set_cheat called for
2231	* him/her-self and all object carried by a call to this function.
2232	*/
2233
2234	void
2235	set_cheat (object *op)
2236	{
2237	SET_FLAG (op, FLAG_WAS_WIZ);
2238	flag_inv (op, FLAG_WAS_WIZ);
2239	}	2026	}
2240		2027
2241	/*	2028	/*
2242	* find_free_spot(object, map, x, y, start, stop) will search for	2029	* find_free_spot(object, map, x, y, start, stop) will search for
2243	* a spot at the given map and coordinates which will be able to contain	2030	* a spot at the given map and coordinates which will be able to contain
…		…
2245	* to search (see the freearr_x/y[] definition).	2032	* to search (see the freearr_x/y[] definition).
2246	* It returns a random choice among the alternatives found.	2033	* It returns a random choice among the alternatives found.
2247	* start and stop are where to start relative to the free_arr array (1,9	2034	* start and stop are where to start relative to the free_arr array (1,9
2248	* does all 4 immediate directions). This returns the index into the	2035	* does all 4 immediate directions). This returns the index into the
2249	* array of the free spot, -1 if no spot available (dir 0 = x,y)	2036	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2250	* Note - this only checks to see if there is space for the head of the
2251	* object - if it is a multispace object, this should be called for all
2252	* pieces.
2253	* Note2: This function does correctly handle tiled maps, but does not	2037	* Note: This function does correctly handle tiled maps, but does not
2254	* inform the caller. However, insert_ob_in_map will update as	2038	* inform the caller. However, insert_ob_in_map will update as
2255	* necessary, so the caller shouldn't need to do any special work.	2039	* necessary, so the caller shouldn't need to do any special work.
2256	* Note - updated to take an object instead of archetype - this is necessary	2040	* Note - updated to take an object instead of archetype - this is necessary
2257	* because arch_blocked (now ob_blocked) needs to know the movement type	2041	* because arch_blocked (now ob_blocked) needs to know the movement type
2258	* to know if the space in question will block the object. We can't use	2042	* to know if the space in question will block the object. We can't use
2259	* the archetype because that isn't correct if the monster has been	2043	* the archetype because that isn't correct if the monster has been
2260	* customized, changed states, etc.	2044	* customized, changed states, etc.
2261	*/	2045	*/
2262
2263	int	2046	int
2264	find_free_spot (const object *ob, mapstruct *m, int x, int y, int start, int stop)	2047	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
2265	{	2048	{
2266	int
2267	i,
2268	index = 0, flag;
2269	static int
2270	altern[SIZEOFFREE];	2049	int altern[SIZEOFFREE];
		2050	int index = 0, flag;
2271		2051
2272	for (i = start; i < stop; i++)	2052	for (int i = start; i < stop; i++)
2273	{	2053	{
2274	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);	2054	mapxy pos (m, x, y); pos.move (i);
2275	if (!flag)	2055
		2056	if (!pos.normalise ())
		2057	continue;
		2058
		2059	mapspace &ms = *pos;
		2060
		2061	if (ms.flags () & P_IS_ALIVE)
		2062	continue;
		2063
		2064	/* However, often
		2065	* ob doesn't have any move type (when used to place exits)
		2066	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2067	*/
		2068	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2069	{
2276	altern[index++] = i;	2070	altern [index++] = i;
		2071	continue;
		2072	}
2277		2073
2278	/* Basically, if we find a wall on a space, we cut down the search size.	2074	/* Basically, if we find a wall on a space, we cut down the search size.
2279	* In this way, we won't return spaces that are on another side of a wall.	2075	* In this way, we won't return spaces that are on another side of a wall.
2280	* This mostly work, but it cuts down the search size in all directions -	2076	* This mostly work, but it cuts down the search size in all directions -
2281	* if the space being examined only has a wall to the north and empty	2077	* if the space being examined only has a wall to the north and empty
2282	* spaces in all the other directions, this will reduce the search space	2078	* spaces in all the other directions, this will reduce the search space
2283	* to only the spaces immediately surrounding the target area, and	2079	* to only the spaces immediately surrounding the target area, and
2284	* won't look 2 spaces south of the target space.	2080	* won't look 2 spaces south of the target space.
2285	*/	2081	*/
2286	else if ((flag & AB_NO_PASS) && maxfree[i] < stop)	2082	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2083	{
2287	stop = maxfree[i];	2084	stop = maxfree[i];
		2085	continue;
		2086	}
		2087
		2088	/* Note it is intentional that we check ob - the movement type of the
		2089	* head of the object should correspond for the entire object.
		2090	*/
		2091	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2092	continue;
		2093
		2094	if (ob->blocked (pos.m, pos.x, pos.y))
		2095	continue;
		2096
		2097	altern [index++] = i;
2288	}	2098	}
		2099
2289	if (!index)	2100	if (!index)
2290	return -1;	2101	return -1;
		2102
2291	return altern[RANDOM () % index];	2103	return altern [rndm (index)];
2292	}	2104	}
2293		2105
2294	/*	2106	/*
2295	* find_first_free_spot(archetype, mapstruct, x, y) works like	2107	* find_first_free_spot(archetype, maptile, x, y) works like
2296	* find_free_spot(), but it will search max number of squares.	2108	* find_free_spot(), but it will search max number of squares.
2297	* But it will return the first available spot, not a random choice.	2109	* But it will return the first available spot, not a random choice.
2298	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2110	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2299	*/	2111	*/
2300
2301	int	2112	int
2302	find_first_free_spot (const object *ob, mapstruct *m, int x, int y)	2113	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2303	{	2114	{
2304	int
2305	i;
2306
2307	for (i = 0; i < SIZEOFFREE; i++)	2115	for (int i = 0; i < SIZEOFFREE; i++)
2308	{
2309	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))	2116	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2310	return i;	2117	return i;
2311	}	2118
2312	return -1;	2119	return -1;
2313	}	2120	}
2314		2121
2315	/*	2122	/*
2316	* The function permute(arr, begin, end) randomly reorders the array	2123	* The function permute(arr, begin, end) randomly reorders the array
2317	* arr[begin..end-1].	2124	* arr[begin..end-1].
		2125	* now uses a fisher-yates shuffle, old permute was broken
2318	*/	2126	*/
2319	static void	2127	static void
2320	permute (int *arr, int begin, int end)	2128	permute (int *arr, int begin, int end)
2321	{	2129	{
2322	int	2130	arr += begin;
2323	i,
2324	j,
2325	tmp,
2326	len;
2327
2328	len = end - begin;	2131	end -= begin;
2329	for (i = begin; i < end; i++)
2330	{
2331	j = begin + RANDOM () % len;
2332		2132
2333	tmp = arr[i];	2133	while (--end)
2334	arr[i] = arr[j];	2134	swap (arr [end], arr [rndm (end + 1)]);
2335	arr[j] = tmp;
2336	}
2337	}	2135	}
2338		2136
2339	/* new function to make monster searching more efficient, and effective!	2137	/* new function to make monster searching more efficient, and effective!
2340	* This basically returns a randomized array (in the passed pointer) of	2138	* This basically returns a randomized array (in the passed pointer) of
2341	* the spaces to find monsters. In this way, it won't always look for	2139	* the spaces to find monsters. In this way, it won't always look for
…		…
2344	* the 3x3 area will be searched, just not in a predictable order.	2142	* the 3x3 area will be searched, just not in a predictable order.
2345	*/	2143	*/
2346	void	2144	void
2347	get_search_arr (int *search_arr)	2145	get_search_arr (int *search_arr)
2348	{	2146	{
2349	int	2147	int i;
2350	i;
2351		2148
2352	for (i = 0; i < SIZEOFFREE; i++)	2149	for (i = 0; i < SIZEOFFREE; i++)
2353	{
2354	search_arr[i] = i;	2150	search_arr[i] = i;
2355	}
2356		2151
2357	permute (search_arr, 1, SIZEOFFREE1 + 1);	2152	permute (search_arr, 1, SIZEOFFREE1 + 1);
2358	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);	2153	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2359	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);	2154	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2360	}	2155	}
…		…
2369	* Perhaps incorrectly, but I'm making the assumption that exclude	2164	* Perhaps incorrectly, but I'm making the assumption that exclude
2370	* is actually want is going to try and move there. We need this info	2165	* is actually want is going to try and move there. We need this info
2371	* because we have to know what movement the thing looking to move	2166	* because we have to know what movement the thing looking to move
2372	* there is capable of.	2167	* there is capable of.
2373	*/	2168	*/
2374
2375	int	2169	int
2376	find_dir (mapstruct *m, int x, int y, object *exclude)	2170	find_dir (maptile *m, int x, int y, object *exclude)
2377	{	2171	{
2378	int
2379	i,
2380	max = SIZEOFFREE, mflags;	2172	int max = SIZEOFFREE, mflags;
2381
2382	sint16 nx, ny;
2383	object *
2384	tmp;
2385	mapstruct *
2386	mp;
2387
2388	MoveType blocked, move_type;	2173	MoveType move_type;
2389		2174
2390	if (exclude && exclude->head)	2175	if (exclude && exclude->head_ () != exclude)
2391	{	2176	{
2392	exclude = exclude->head;	2177	exclude = exclude->head;
2393	move_type = exclude->move_type;	2178	move_type = exclude->move_type;
2394	}	2179	}
2395	else	2180	else
2396	{	2181	{
2397	/* If we don't have anything, presume it can use all movement types. */	2182	/* If we don't have anything, presume it can use all movement types. */
2398	move_type = MOVE_ALL;	2183	move_type = MOVE_ALL;
2399	}	2184	}
2400		2185
2401	for (i = 1; i < max; i++)	2186	for (int i = 1; i < max; i++)
2402	{	2187	{
2403	mp = m;	2188	mapxy pos (m, x, y);
2404	nx = x + freearr_x[i];	2189	pos.move (i);
2405	ny = y + freearr_y[i];
2406		2190
2407	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);	2191	if (!pos.normalise ())
2408	if (mflags & P_OUT_OF_MAP)
2409	{
2410	max = maxfree[i];	2192	max = maxfree[i];
2411	}
2412	else	2193	else
2413	{	2194	{
2414	blocked = GET_MAP_MOVE_BLOCK (mp, nx, ny);	2195	mapspace &ms = *pos;
2415		2196
2416	if ((move_type & blocked) == move_type)	2197	if ((move_type & ms.move_block) == move_type)
		2198	max = maxfree [i];
		2199	else if (ms.flags () & P_IS_ALIVE)
2417	{	2200	{
2418	max = maxfree[i];	2201	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
2419	}	2202	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2420	else if (mflags & P_IS_ALIVE)	2203	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2421	{
2422	for (tmp = GET_MAP_OB (mp, nx, ny); tmp != NULL; tmp = tmp->above)
2423	{
2424	if ((QUERY_FLAG (tmp, FLAG_MONSTER) || tmp->type == PLAYER) && (tmp != exclude || (tmp->head && tmp->head != exclude)))
2425	{
2426	break;
2427	}
2428	}
2429	if (tmp)
2430	{
2431	return freedir[i];	2204	return freedir [i];
2432	}
2433	}	2205	}
2434	}	2206	}
2435	}	2207	}
		2208
2436	return 0;	2209	return 0;
2437	}	2210	}
2438		2211
2439	/*	2212	/*
2440	* distance(object 1, object 2) will return the square of the	2213	* distance(object 1, object 2) will return the square of the
2441	* distance between the two given objects.	2214	* distance between the two given objects.
2442	*/	2215	*/
2443
2444	int	2216	int
2445	distance (const object *ob1, const object *ob2)	2217	distance (const object *ob1, const object *ob2)
2446	{	2218	{
2447	int
2448	i;
2449
2450	i = (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);	2219	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2451	return i;
2452	}	2220	}
2453		2221
2454	/*	2222	/*
2455	* find_dir_2(delta-x,delta-y) will return a direction in which	2223	* find_dir_2(delta-x,delta-y) will return a direction in which
2456	* an object which has subtracted the x and y coordinates of another	2224	* an object which has subtracted the x and y coordinates of another
2457	* object, needs to travel toward it.	2225	* object, needs to travel toward it.
2458	*/	2226	*/
2459
2460	int	2227	int
2461	find_dir_2 (int x, int y)	2228	find_dir_2 (int x, int y)
2462	{	2229	{
2463	int	2230	int q;
2464	q;
2465		2231
2466	if (y)	2232	if (y)
2467	q = x * 100 / y;	2233	q = x * 100 / y;
2468	else if (x)	2234	else if (x)
2469	q = -300 * x;	2235	q = -300 * x;
…		…
2494		2260
2495	return 3;	2261	return 3;
2496	}	2262	}
2497		2263
2498	/*	2264	/*
2499	* absdir(int): Returns a number between 1 and 8, which represent
2500	* the "absolute" direction of a number (it actually takes care of
2501	* "overflow" in previous calculations of a direction).
2502	*/
2503
2504	int
2505	absdir (int d)
2506	{
2507	while (d < 1)
2508	d += 8;
2509	while (d > 8)
2510	d -= 8;
2511	return d;
2512	}
2513
2514	/*
2515	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2265	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2516	* between two directions (which are expected to be absolute (see absdir())	2266	* between two directions (which are expected to be absolute (see absdir())
2517	*/	2267	*/
2518
2519	int	2268	int
2520	dirdiff (int dir1, int dir2)	2269	dirdiff (int dir1, int dir2)
2521	{	2270	{
2522	int	2271	int d;
2523	d;
2524		2272
2525	d = abs (dir1 - dir2);	2273	d = abs (dir1 - dir2);
2526	if (d > 4)	2274	if (d > 4)
2527	d = 8 - d;	2275	d = 8 - d;
		2276
2528	return d;	2277	return d;
2529	}	2278	}
2530		2279
2531	/* peterm:	2280	/* peterm:
2532	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2281	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2535	* This basically means that if direction is 15, then it could either go	2284	* This basically means that if direction is 15, then it could either go
2536	* direction 4, 14, or 16 to get back to where we are.	2285	* direction 4, 14, or 16 to get back to where we are.
2537	* Moved from spell_util.c to object.c with the other related direction	2286	* Moved from spell_util.c to object.c with the other related direction
2538	* functions.	2287	* functions.
2539	*/	2288	*/
2540
2541	int
2542	reduction_dir[SIZEOFFREE][3] = {	2289	static const int reduction_dir[SIZEOFFREE][3] = {
2543	{0, 0, 0}, /* 0 */	2290	{0, 0, 0}, /* 0 */
2544	{0, 0, 0}, /* 1 */	2291	{0, 0, 0}, /* 1 */
2545	{0, 0, 0}, /* 2 */	2292	{0, 0, 0}, /* 2 */
2546	{0, 0, 0}, /* 3 */	2293	{0, 0, 0}, /* 3 */
2547	{0, 0, 0}, /* 4 */	2294	{0, 0, 0}, /* 4 */
…		…
2595	* find a path to that monster that we found. If not,	2342	* find a path to that monster that we found. If not,
2596	* we don't bother going toward it. Returns 1 if we	2343	* we don't bother going toward it. Returns 1 if we
2597	* can see a direct way to get it	2344	* can see a direct way to get it
2598	* Modified to be map tile aware -.MSW	2345	* Modified to be map tile aware -.MSW
2599	*/	2346	*/
2600
2601
2602	int	2347	int
2603	can_see_monsterP (mapstruct *m, int x, int y, int dir)	2348	can_see_monsterP (maptile *m, int x, int y, int dir)
2604	{	2349	{
2605	sint16 dx, dy;	2350	sint16 dx, dy;
2606	int
2607	mflags;	2351	int mflags;
2608		2352
2609	if (dir < 0)	2353	if (dir < 0)
2610	return 0; /* exit condition: invalid direction */	2354	return 0; /* exit condition: invalid direction */
2611		2355
2612	dx = x + freearr_x[dir];	2356	dx = x + freearr_x[dir];
…		…
2625	return 0;	2369	return 0;
2626		2370
2627	/* yes, can see. */	2371	/* yes, can see. */
2628	if (dir < 9)	2372	if (dir < 9)
2629	return 1;	2373	return 1;
		2374
2630	return can_see_monsterP (m, x, y, reduction_dir[dir][0]) |	2375	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2631	can_see_monsterP (m, x, y, reduction_dir[dir][1]) | can_see_monsterP (m, x, y, reduction_dir[dir][2]);	2376	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
		2377	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2632	}	2378	}
2633
2634
2635		2379
2636	/*	2380	/*
2637	* can_pick(picker, item): finds out if an object is possible to be	2381	* can_pick(picker, item): finds out if an object is possible to be
2638	* picked up by the picker. Returnes 1 if it can be	2382	* picked up by the picker. Returnes 1 if it can be
2639	* picked up, otherwise 0.	2383	* picked up, otherwise 0.
…		…
2641	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2385	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2642	* core dumps if they do.	2386	* core dumps if they do.
2643	*	2387	*
2644	* Add a check so we can't pick up invisible objects (0.93.8)	2388	* Add a check so we can't pick up invisible objects (0.93.8)
2645	*/	2389	*/
2646
2647	int	2390	int
2648	can_pick (const object *who, const object *item)	2391	can_pick (const object *who, const object *item)
2649	{	2392	{
2650	return /*QUERY_FLAG(who,FLAG_WIZ)|| */	2393	return /*who->flag [FLAG_WIZ]|| */
2651	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&	2394	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2652	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));	2395	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2653	}	2396	}
2654
2655		2397
2656	/*	2398	/*
2657	* create clone from object to another	2399	* create clone from object to another
2658	*/	2400	*/
2659	object *	2401	object *
2660	object_create_clone (object *asrc)	2402	object::deep_clone ()
2661	{	2403	{
2662	object *	2404	assert (("deep_clone called on non-head object", is_head ()));
2663	dst = NULL, *tmp, *src, *part, *prev, *item;
2664		2405
2665	if (!asrc)	2406	object *dst = clone ();
2666	return NULL;
2667	src = asrc;
2668	if (src->head)
2669	src = src->head;
2670		2407
2671	prev = NULL;	2408	object *prev = dst;
2672	for (part = src; part; part = part->more)	2409	for (object *part = this->more; part; part = part->more)
2673	{	2410	{
2674	tmp = get_object ();	2411	object *tmp = part->clone ();
2675	copy_object (part, tmp);
2676	tmp->x -= src->x;
2677	tmp->y -= src->y;
2678	if (!part->head)
2679	{
2680	dst = tmp;
2681	tmp->head = NULL;
2682	}
2683	else
2684	{
2685	tmp->head = dst;	2412	tmp->head = dst;
2686	}
2687	tmp->more = NULL;
2688	if (prev)
2689	prev->more = tmp;	2413	prev->more = tmp;
2690	prev = tmp;	2414	prev = tmp;
2691	}	2415	}
2692		2416
2693	/*** copy inventory ***/
2694	for (item = src->inv; item; item = item->below)	2417	for (object *item = inv; item; item = item->below)
2695	{	2418	insert_ob_in_ob (item->deep_clone (), dst);
2696	(void) insert_ob_in_ob (object_create_clone (item), dst);
2697	}
2698		2419
2699	return dst;	2420	return dst;
2700	}
2701
2702	/* return true if the object was destroyed, 0 otherwise */
2703	int
2704	was_destroyed (const object *op, tag_t old_tag)
2705	{
2706	/* checking for FLAG_FREED isn't necessary, but makes this function more
2707	* robust */
2708	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2709	}
2710
2711	/* GROS - Creates an object using a string representing its content. */
2712
2713	/* Basically, we save the content of the string to a temp file, then call */
2714
2715	/* load_object on it. I admit it is a highly inefficient way to make things, */
2716
2717	/* but it was simple to make and allows reusing the load_object function. */
2718
2719	/* Remember not to use load_object_str in a time-critical situation. */
2720
2721	/* Also remember that multiparts objects are not supported for now. */
2722
2723	object *
2724	load_object_str (const char *obstr)
2725	{
2726	object *
2727	op;
2728	char
2729	filename[MAX_BUF];
2730
2731	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2732
2733	FILE *
2734	tempfile = fopen (filename, "w");
2735
2736	if (tempfile == NULL)
2737	{
2738	LOG (llevError, "Error - Unable to access load object temp file\n");
2739	return NULL;
2740	};
2741	fprintf (tempfile, obstr);
2742	fclose (tempfile);
2743
2744	op = get_object ();
2745
2746	object_thawer thawer (filename);
2747
2748	if (thawer)
2749	load_object (thawer, op, 0);
2750
2751	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2752	CLEAR_FLAG (op, FLAG_REMOVED);
2753
2754	return op;
2755	}	2421	}
2756		2422
2757	/* This returns the first object in who's inventory that	2423	/* This returns the first object in who's inventory that
2758	* has the same type and subtype match.	2424	* has the same type and subtype match.
2759	* returns NULL if no match.	2425	* returns NULL if no match.
2760	*/	2426	*/
2761	object *	2427	object *
2762	find_obj_by_type_subtype (const object *who, int type, int subtype)	2428	find_obj_by_type_subtype (const object *who, int type, int subtype)
2763	{	2429	{
2764	object *
2765	tmp;
2766
2767	for (tmp = who->inv; tmp; tmp = tmp->below)	2430	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2768	if (tmp->type == type && tmp->subtype == subtype)	2431	if (tmp->type == type && tmp->subtype == subtype)
2769	return tmp;	2432	return tmp;
2770		2433
2771	return NULL;
2772	}
2773
2774	/* If ob has a field named key, return the link from the list,
2775	* otherwise return NULL.
2776	*
2777	* key must be a passed in shared string - otherwise, this won't
2778	* do the desired thing.
2779	*/
2780	key_value *
2781	get_ob_key_link (const object *ob, const char *key)
2782	{
2783	key_value *
2784	link;
2785
2786	for (link = ob->key_values; link != NULL; link = link->next)
2787	{
2788	if (link->key == key)
2789	{
2790	return link;
2791	}
2792	}
2793
2794	return NULL;
2795	}
2796
2797	/*
2798	* Returns the value of op has an extra_field for key, or NULL.
2799	*
2800	* The argument doesn't need to be a shared string.
2801	*
2802	* The returned string is shared.
2803	*/
2804	const char *
2805	get_ob_key_value (const object *op, const char *const key)
2806	{
2807	key_value *link;
2808	shstr_cmp canonical_key (key);
2809
2810	if (!canonical_key)
2811	{
2812	/* 1. There being a field named key on any object
2813	* implies there'd be a shared string to find.
2814	* 2. Since there isn't, no object has this field.
2815	* 3. Therefore, *this* object doesn't have this field.
2816	*/
2817	return 0;
2818	}
2819
2820	/* This is copied from get_ob_key_link() above -
2821	* only 4 lines, and saves the function call overhead.
2822	*/
2823	for (link = op->key_values; link; link = link->next)
2824	if (link->key == canonical_key)
2825	return link->value;
2826
2827	return 0;	2434	return 0;
2828	}	2435	}
2829		2436
2830		2437	shstr_tmp
2831	/*	2438	object::kv_get (shstr_tmp key) const
2832	* Updates the canonical_key in op to value.
2833	*
2834	* canonical_key is a shared string (value doesn't have to be).
2835	*
2836	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2837	* keys.
2838	*
2839	* Returns TRUE on success.
2840	*/
2841	int
2842	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
2843	{	2439	{
2844	key_value *	2440	for (key_value *kv = key_values; kv; kv = kv->next)
2845	field = NULL, *last = NULL;	2441	if (kv->key == key)
		2442	return kv->value;
2846		2443
2847	for (field = op->key_values; field != NULL; field = field->next)	2444	return shstr ();
2848	{	2445	}
2849	if (field->key != canonical_key)	2446
		2447	void
		2448	object::kv_set (shstr_tmp key, shstr_tmp value)
		2449	{
		2450	for (key_value *kv = key_values; kv; kv = kv->next)
		2451	if (kv->key == key)
2850	{	2452	{
2851	last = field;	2453	kv->value = value;
2852	continue;	2454	return;
2853	}	2455	}
2854		2456
2855	if (value)	2457	key_value *kv = new key_value;
2856	field->value = value;	2458
2857	else	2459	kv->next = key_values;
		2460	kv->key = key;
		2461	kv->value = value;
		2462
		2463	key_values = kv;
		2464	}
		2465
		2466	void
		2467	object::kv_del (shstr_tmp key)
		2468	{
		2469	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2470	if ((*kvp)->key == key)
2858	{	2471	{
2859	/* Basically, if the archetype has this key set,	2472	key_value *kv = *kvp;
2860	* we need to store the null value so when we save	2473	*kvp = (*kvp)->next;
2861	* it, we save the empty value so that when we load,	2474	delete kv;
2862	* we get this value back again.	2475	return;
2863	*/
2864	if (get_ob_key_link (&op->arch->clone, canonical_key))
2865	field->value = 0;
2866	else
2867	{
2868	if (last)
2869	last->next = field->next;
2870	else
2871	op->key_values = field->next;
2872
2873	delete field;
2874	}
2875	}	2476	}
2876	return TRUE;
2877	}
2878	/* IF we get here, key doesn't exist */
2879
2880	/* No field, we'll have to add it. */
2881
2882	if (!add_key)
2883	{
2884	return FALSE;
2885	}
2886	/* There isn't any good reason to store a null
2887	* value in the key/value list. If the archetype has
2888	* this key, then we should also have it, so shouldn't
2889	* be here. If user wants to store empty strings,
2890	* should pass in ""
2891	*/
2892	if (value == NULL)
2893	return TRUE;
2894
2895	field = new key_value;
2896
2897	field->key = canonical_key;
2898	field->value = value;
2899	/* Usual prepend-addition. */
2900	field->next = op->key_values;
2901	op->key_values = field;
2902
2903	return TRUE;
2904	}
2905
2906	/*
2907	* Updates the key in op to value.
2908	*
2909	* If add_key is FALSE, this will only update existing keys,
2910	* and not add new ones.
2911	* In general, should be little reason FALSE is ever passed in for add_key
2912	*
2913	* Returns TRUE on success.
2914	*/
2915	int
2916	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2917	{
2918	shstr key_ (key);
2919
2920	return set_ob_key_value_s (op, key_, value, add_key);
2921	}	2477	}
2922		2478
2923	object::depth_iterator::depth_iterator (object *container)	2479	object::depth_iterator::depth_iterator (object *container)
2924	: iterator_base (container)	2480	: iterator_base (container)
2925	{	2481	{
…		…
2939	}	2495	}
2940	else	2496	else
2941	item = item->env;	2497	item = item->env;
2942	}	2498	}
2943		2499
		2500	const char *
		2501	object::flag_desc (char *desc, int len) const
		2502	{
		2503	char *p = desc;
		2504	bool first = true;
		2505
		2506	*p = 0;
		2507
		2508	for (int i = 0; i < NUM_FLAGS; i++)
		2509	{
		2510	if (len <= 10) // magic constant!
		2511	{
		2512	snprintf (p, len, ",...");
		2513	break;
		2514	}
		2515
		2516	if (flag [i])
		2517	{
		2518	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2519	len -= cnt;
		2520	p += cnt;
		2521	first = false;
		2522	}
		2523	}
		2524
		2525	return desc;
		2526	}
		2527
2944	// return a suitable string describing an objetc in enough detail to find it	2528	// return a suitable string describing an object in enough detail to find it
2945	const char *	2529	const char *
2946	object::debug_desc (char *info) const	2530	object::debug_desc (char *info) const
2947	{	2531	{
		2532	char flagdesc[512];
2948	char info2[256 * 3];	2533	char info2[256 * 4];
2949	char *p = info;	2534	char *p = info;
2950		2535
2951	p += snprintf (p, 256, "%d=\"%s%s%s\"",	2536	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
2952	count,	2537	count,
		2538	uuid.c_str (),
2953	&name,	2539	&name,
2954	title ? " " : "",	2540	title ? ",title:\"" : "",
2955	title ? (const char *)title : "");	2541	title ? (const char *)title : "",
		2542	title ? "\"" : "",
		2543	flag_desc (flagdesc, 512), type);
2956		2544
2957	if (env)	2545	if (!flag[FLAG_REMOVED] && env)
2958	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));	2546	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
2959		2547
2960	if (map)	2548	if (map)
2961	p += snprintf (p, 256, "(on %s@%d+%d)", map->path, x, y);	2549	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
2962		2550
2963	return info;	2551	return info;
2964	}	2552	}
2965		2553
2966	const char *	2554	const char *
2967	object::debug_desc () const	2555	object::debug_desc () const
2968	{	2556	{
2969	static char info[256 * 3];	2557	static char info[3][256 * 4];
		2558	static int info_idx;
		2559
2970	return debug_desc (info);	2560	return debug_desc (info [++info_idx % 3]);
2971	}	2561	}
2972		2562
		2563	struct region *
		2564	object::region () const
		2565	{
		2566	return map ? map->region (x, y)
		2567	: region::default_region ();
		2568	}
		2569
		2570	void
		2571	object::open_container (object *new_container)
		2572	{
		2573	if (container == new_container)
		2574	return;
		2575
		2576	object *old_container = container;
		2577
		2578	if (old_container)
		2579	{
		2580	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2581	return;
		2582
		2583	#if 0
		2584	// remove the "Close old_container" object.
		2585	if (object *closer = old_container->inv)
		2586	if (closer->type == CLOSE_CON)
		2587	closer->destroy ();
		2588	#endif
		2589
		2590	// make sure the container is available
		2591	esrv_send_item (this, old_container);
		2592
		2593	old_container->flag [FLAG_APPLIED] = false;
		2594	container = 0;
		2595
		2596	// client needs item update to make it work, client bug requires this to be separate
		2597	esrv_update_item (UPD_FLAGS, this, old_container);
		2598
		2599	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2600	play_sound (sound_find ("chest_close"));
		2601	}
		2602
		2603	if (new_container)
		2604	{
		2605	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2606	return;
		2607
		2608	// TODO: this does not seem to serve any purpose anymore?
		2609	#if 0
		2610	// insert the "Close Container" object.
		2611	if (archetype *closer = new_container->other_arch)
		2612	{
		2613	object *closer = new_container->other_arch->instance ();
		2614	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2615	new_container->insert (closer);
		2616	}
		2617	#endif
		2618
		2619	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2620
		2621	// make sure the container is available, client bug requires this to be separate
		2622	esrv_send_item (this, new_container);
		2623
		2624	new_container->flag [FLAG_APPLIED] = true;
		2625	container = new_container;
		2626
		2627	// client needs flag change
		2628	esrv_update_item (UPD_FLAGS, this, new_container);
		2629	esrv_send_inventory (this, new_container);
		2630	play_sound (sound_find ("chest_open"));
		2631	}
		2632	// else if (!old_container->env && contr && contr->ns)
		2633	// contr->ns->floorbox_reset ();
		2634	}
		2635
		2636	object *
		2637	object::force_find (shstr_tmp name)
		2638	{
		2639	/* cycle through his inventory to look for the MARK we want to
		2640	* place
		2641	*/
		2642	for (object *tmp = inv; tmp; tmp = tmp->below)
		2643	if (tmp->type == FORCE && tmp->slaying == name)
		2644	return splay (tmp);
		2645
		2646	return 0;
		2647	}
		2648
		2649	//-GPL
		2650
		2651	void
		2652	object::force_set_timer (int duration)
		2653	{
		2654	this->duration = 1;
		2655	this->speed_left = -1.f;
		2656
		2657	this->set_speed (duration ? 1.f / duration : 0.f);
		2658	}
		2659
		2660	object *
		2661	object::force_add (shstr_tmp name, int duration)
		2662	{
		2663	if (object *force = force_find (name))
		2664	force->destroy ();
		2665
		2666	object *force = get_archetype (FORCE_NAME);
		2667
		2668	force->slaying = name;
		2669	force->force_set_timer (duration);
		2670	force->flag [FLAG_APPLIED] = true;
		2671
		2672	return insert (force);
		2673	}
		2674
		2675	void
		2676	object::play_sound (faceidx sound) const
		2677	{
		2678	if (!sound)
		2679	return;
		2680
		2681	if (is_on_map ())
		2682	map->play_sound (sound, x, y);
		2683	else if (object *pl = in_player ())
		2684	pl->contr->play_sound (sound);
		2685	}
		2686
		2687	void
		2688	object::say_msg (const char *msg) const
		2689	{
		2690	if (is_on_map ())
		2691	map->say_msg (msg, x, y);
		2692	else if (object *pl = in_player ())
		2693	pl->contr->play_sound (sound);
		2694	}
		2695
		2696	void
		2697	object::make_noise ()
		2698	{
		2699	// we do not model noise in the map, so instead put
		2700	// a temporary light into the noise source
		2701	// could use the map instead, but that's less reliable for our
		2702	// goal, which is to make invisibility a bit harder to exploit
		2703
		2704	// currently only works sensibly for players
		2705	if (!is_player ())
		2706	return;
		2707
		2708	// find old force, or create new one
		2709	object *force = force_find (shstr_noise_force);
		2710
		2711	if (force)
		2712	force->speed_left = -1.f; // patch old speed up
		2713	else
		2714	{
		2715	force = archetype::get (shstr_noise_force);
		2716
		2717	force->slaying = shstr_noise_force;
		2718	force->stats.food = 1;
		2719	force->speed_left = -1.f;
		2720
		2721	force->set_speed (1.f / 4.f);
		2722	force->flag [FLAG_IS_USED_UP] = true;
		2723	force->flag [FLAG_APPLIED] = true;
		2724
		2725	insert (force);
		2726	}
		2727	}
		2728
		2729	void object::change_move_type (MoveType mt)
		2730	{
		2731	if (move_type == mt)
		2732	return;
		2733
		2734	if (is_on_map ())
		2735	{
		2736	// we are on the map, so handle move_on/off effects
		2737	remove ();
		2738	move_type = mt;
		2739	map->insert (this, x, y, this);
		2740	}
		2741	else
		2742	move_type = mt;
		2743	}
		2744
		2745	/* object should be a player.
		2746	* we return the object the player has marked with the 'mark' command
		2747	* below. If no match is found (or object has changed), we return
		2748	* NULL. We leave it up to the calling function to print messages if
		2749	* nothing is found.
		2750	*/
		2751	object *
		2752	object::mark () const
		2753	{
		2754	if (contr && contr->mark && contr->mark->env == this)
		2755	return contr->mark;
		2756	else
		2757	return 0;
		2758	}
		2759

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