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Comparing deliantra/server/common/object.C (file contents):
Revision 1.41 by root, Thu Sep 14 01:12:28 2006 UTC vs.
Revision 1.346 by root, Wed May 4 07:36:40 2011 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 (©) 2005,2006,2007,2008,2009,2010,2011 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
		76	const char *wall_suffix[16] = {
		77	"0",
		78	"1_3",
		79	"1_4",
		80	"2_1_2",
		81	"1_2",
		82	"2_2_4",
		83	"2_2_1",
		84	"3_1",
		85	"1_1",
		86	"2_2_3",
		87	"2_2_2",
		88	"3_3",
		89	"2_1_1",
		90	"3_4",
		91	"3_2",
		92	"4"
		93	};
		94
57	static void	95	static void
58	write_uuid (void)	96	write_uuid (uval64 skip, bool sync)
59	{	97	{
60	char filename1[MAX_BUF], filename2[MAX_BUF];	98	CALL_BEGIN (2);
61		99	CALL_ARG_SV (newSVval64 (skip));
62	sprintf (filename1, "%s/uuid", settings.localdir);	100	CALL_ARG_SV (boolSV (sync));
63	sprintf (filename2, "%s/uuid~", settings.localdir);	101	CALL_CALL ("cf::write_uuid", G_DISCARD);
64		102	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	}	103	}
77		104
78	static void	105	static void
79	read_uuid (void)	106	read_uuid ()
80	{	107	{
81	char filename[MAX_BUF];	108	char filename[MAX_BUF];
82		109
83	sprintf (filename, "%s/uuid", settings.localdir);	110	sprintf (filename, "%s/uuid", settings.localdir);
		111
		112	seq_next_save = 0;
84		113
85	FILE *fp;	114	FILE *fp;
86		115
87	if (!(fp = fopen (filename, "r")))	116	if (!(fp = fopen (filename, "r")))
88	{	117	{
89	if (errno == ENOENT)	118	if (errno == ENOENT)
90	{	119	{
91	LOG (llevInfo, "RESET uid to 1\n");	120	LOG (llevInfo, "RESET uid to 1\n");
92	uuid.seq = 0;	121	UUID::cur.seq = 0;
93	write_uuid ();	122	write_uuid (UUID_GAP, true);
94	return;	123	return;
95	}	124	}
96		125
97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);	126	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
98	_exit (1);	127	_exit (1);
99	}	128	}
100		129
101	int version;	130	char buf [UUID::MAX_LEN];
102	unsigned long long uid;	131	buf[0] = 0;
103	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)	132	fgets (buf, sizeof (buf), fp);
		133
		134	if (!UUID::cur.parse (buf))
104	{	135	{
105	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);	136	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
106	_exit (1);	137	_exit (1);
107	}	138	}
108		139
109	uuid.seq = uid;
110	write_uuid ();
111	LOG (llevDebug, "read UID: %lld\n", uid);	140	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		141
		142	write_uuid (UUID_GAP, true);
112	fclose (fp);	143	fclose (fp);
113	}	144	}
114		145
115	UUID	146	UUID
116	gen_uuid ()	147	UUID::gen ()
117	{	148	{
118	UUID uid;	149	UUID uid;
119		150
120	uid.seq = ++uuid.seq;	151	uid.seq = ++cur.seq;
121		152
122	if (!(uuid.seq & (UUID_SKIP - 1)))	153	if (expect_false (cur.seq >= seq_next_save))
123	write_uuid ();	154	{
		155	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		156	write_uuid (UUID_GAP, false);
		157	}
		158
124		159
125	return uid;	160	return uid;
126	}	161	}
127		162
128	void	163	void
129	init_uuid ()	164	UUID::init ()
130	{	165	{
131	read_uuid ();	166	read_uuid ();
132	}	167	}
133		168
		169	bool
		170	UUID::parse (const char *s)
		171	{
		172	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		173	return false;
		174
		175	seq = 0;
		176
		177	while (*s != '>')
		178	{
		179	if (*s < '0')
		180	return false;
		181
		182	// this gives nice branchless code with gcc
		183	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		184	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		185
		186	seq = (seq << 4) | digit;
		187
		188	++s;
		189	}
		190
		191	return true;
		192	}
		193
		194	char *
		195	UUID::append (char *buf) const
		196	{
		197	*buf++ = '<';
		198	*buf++ = '1';
		199	*buf++ = '.';
		200
		201	uint64_t seq = this->seq;
		202	const int bits = 64;
		203	char nz = 0;
		204	static const char tohex [] = "0123456789abcdef";
		205
		206	// assert (len >= 3 + bits / 4 + 1 + 1);
		207	for (int i = bits / 4; --i; )
		208	{
		209	uint8_t digit = seq >> (bits - 4);
		210
		211	*buf = tohex [digit];
		212	nz |= digit;
		213	buf += nz ? 1 : 0;
		214	seq <<= 4;
		215	}
		216
		217	// last digit is special - always emit
		218	uint8_t digit = seq >> (bits - 4);
		219	*buf++ = tohex [digit];
		220
		221	*buf++ = '>';
		222
		223	return buf;
		224	}
		225
		226	char *
		227	UUID::c_str () const
		228	{
		229	static char buf [MAX_LEN];
		230	*append (buf) = 0;
		231	return buf;
		232	}
		233
134	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	234	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
135	static int	235	static bool
136	compare_ob_value_lists_one (const object *wants, const object *has)	236	compare_ob_value_lists_one (const object *wants, const object *has)
137	{	237	{
138	key_value *wants_field;
139
140	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	238	/* 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	239	* objects with lists are rare, and lists stay short. If not, use a
142	* different structure or at least keep the lists sorted...	240	* different structure or at least keep the lists sorted...
143	*/	241	*/
144		242
145	/* For each field in wants, */	243	/* For each field in wants, */
146	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next)	244	for (key_value *kv = wants->kv.first; kv; kv = kv->next)
147	{	245	if (has->kv.get (kv->key) != kv->value)
148	key_value *has_field;	246	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		247
169	/* If we get here, every field in wants has a matching field in has. */	248	/* If we get here, every field in wants has a matching field in has. */
170	return TRUE;	249	return true;
171	}	250	}
172		251
173	/* Returns TRUE if ob1 has the same key_values as ob2. */	252	/* Returns TRUE if ob1 has the same key_values as ob2. */
174	static int	253	static bool
175	compare_ob_value_lists (const object *ob1, const object *ob2)	254	compare_ob_value_lists (const object *ob1, const object *ob2)
176	{	255	{
177	/* However, there may be fields in has which aren't partnered in wants,	256	/* However, there may be fields in has which aren't partnered in wants,
178	* so we need to run the comparison *twice*. :(	257	* so we need to run the comparison *twice*. :(
179	*/	258	*/
180	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);	259	return compare_ob_value_lists_one (ob1, ob2)
		260	&& compare_ob_value_lists_one (ob2, ob1);
181	}	261	}
182		262
183	/* Function examines the 2 objects given to it, and returns true if	263	/* Function examines the 2 objects given to it, and returns true if
184	* they can be merged together.	264	* they can be merged together.
185	*	265	*
186	* Note that this function appears a lot longer than the macro it	266	* Note that this function appears a lot longer than the macro it
187	* replaces - this is mostly for clarity - a decent compiler should hopefully	267	* replaces - this is mostly for clarity - a decent compiler should hopefully
188	* reduce this to the same efficiency.	268	* reduce this to the same efficiency.
189	*	269	*
190	* Check nrof variable *before* calling CAN_MERGE()	270	* Check nrof variable *before* calling can_merge()
191	*	271	*
192	* Improvements made with merge: Better checking on potion, and also	272	* Improvements made with merge: Better checking on potion, and also
193	* check weight	273	* check weight
194	*/	274	*/
195
196	bool object::can_merge (object *ob1, object *ob2)	275	bool object::can_merge_slow (object *ob1, object *ob2)
197	{	276	{
198	/* A couple quicksanity checks */	277	/* A couple quick sanity checks */
199	if ((ob1 == ob2) || (ob1->type != ob2->type))	278	if (ob1 == ob2
		279	|| ob1->type != ob2->type
		280	|| ob1->value != ob2->value
		281	|| ob1->name != ob2->name
		282	|| ob1->custom_name != ob2->custom_name
		283	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
200	return 0;	284	return 0;
201		285
202	if (ob1->speed != ob2->speed)	286	/* Do not merge objects if nrof would overflow, assume nrof
		287	* is always 0 .. 2**31-1 */
		288	if (ob1->nrof > 0x7fffffff - ob2->nrof)
203	return 0;	289	return 0;
204		290
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.	291	/* 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	292	* 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	293	* 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	294	* are not equal - just if it has been identified, the been_applied
216	* flags lose any meaning.	295	* flags lose any meaning.
217	*/	296	*/
218	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	297	if (ob1->flag [FLAG_IDENTIFIED])
219	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	298	ob1->set_flag (FLAG_BEEN_APPLIED);
220		299
221	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	300	if (ob2->flag [FLAG_IDENTIFIED])
222	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	301	ob2->set_flag (FLAG_BEEN_APPLIED);
223		302
224		303	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) ||	304	|| ob1->name != ob2->name
235	(ob1->title != ob2->title) ||	305	|| ob1->title != ob2->title
236	(ob1->msg != ob2->msg) ||	306	|| ob1->msg != ob2->msg
237	(ob1->weight != ob2->weight) ||	307	|| 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) ||	308	|| ob1->attacktype != ob2->attacktype
241	(ob1->magic != ob2->magic) ||	309	|| ob1->magic != ob2->magic
242	(ob1->slaying != ob2->slaying) ||	310	|| ob1->slaying != ob2->slaying
243	(ob1->skill != ob2->skill) ||	311	|| ob1->skill != ob2->skill
244	(ob1->value != ob2->value) ||	312	|| ob1->value != ob2->value
245	(ob1->animation_id != ob2->animation_id) ||	313	|| ob1->animation_id != ob2->animation_id
		314	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
246	(ob1->client_type != ob2->client_type) ||	315	|| ob1->client_type != ob2->client_type
247	(ob1->materialname != ob2->materialname) ||	316	|| ob1->material != ob2->material
248	(ob1->lore != ob2->lore) ||	317	|| ob1->lore != ob2->lore
249	(ob1->subtype != ob2->subtype) ||	318	|| ob1->subtype != ob2->subtype
250	(ob1->move_type != ob2->move_type) ||	319	|| ob1->move_type != ob2->move_type
251	(ob1->move_block != ob2->move_block) ||	320	|| ob1->move_block != ob2->move_block
252	(ob1->move_allow != ob2->move_allow) ||	321	|| ob1->move_allow != ob2->move_allow
253	(ob1->move_on != ob2->move_on) ||	322	|| 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))	323	|| ob1->move_off != ob2->move_off
		324	|| ob1->move_slow != ob2->move_slow
		325	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		326	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		327	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
255	return 0;	328	return 0;
256		329
		330	if ((ob1->flag ^ ob2->flag)
		331	.reset (FLAG_INV_LOCKED)
		332	.reset (FLAG_REMOVED)
		333	.any ())
		334	return 0;
		335
257	/* This is really a spellbook check - really, we should	336	/* This is really a spellbook check - we should in general
258	* check all objects in the inventory.	337	* not merge objects with real inventories, as splitting them
		338	* is hard.
259	*/	339	*/
260	if (ob1->inv || ob2->inv)	340	if (ob1->inv || ob2->inv)
261	{	341	{
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))	342	if (!(ob1->inv && ob2->inv))
268	return 0;	343	return 0; /* inventories differ in length */
		344
		345	if (ob1->inv->below || ob2->inv->below)
		346	return 0; /* more than one object in inv */
		347
		348	if (!object::can_merge (ob1->inv, ob2->inv))
		349	return 0; /* inventory objects differ */
269		350
270	/* inventory ok - still need to check rest of this object to see	351	/* inventory ok - still need to check rest of this object to see
271	* if it is valid.	352	* if it is valid.
272	*/	353	*/
273	}	354	}
274		355
275	/* Don't merge objects that are applied. With the new 'body' code,	356	/* 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	357	* 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.	358	* some items equipped, and we don't want those to merge.
278	*/	359	*/
279	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))	360	if (ob1->flag [FLAG_APPLIED] || ob2->flag [FLAG_APPLIED])
280	return 0;	361	return 0;
281		362
282	/* Note sure why the following is the case - either the object has to	363	/* 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	364	* be animated or have a very low speed. Is this an attempted monster
284	* check?	365	* check?
285	*/	366	*/
286	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)	367	if (!ob1->flag [FLAG_ANIMATE] && ob1->has_active_speed ())
287	return 0;	368	return 0;
288		369
289	switch (ob1->type)	370	switch (ob1->type)
290	{	371	{
291	case SCROLL:	372	case SCROLL:
292	if (ob1->level != ob2->level)	373	if (ob1->level != ob2->level)
293	return 0;	374	return 0;
294	break;	375	break;
295	}	376	}
296		377
297	if (ob1->key_values != NULL || ob2->key_values != NULL)	378	if (!ob1->kv.empty () || !ob2->kv.empty ())
298	{	379	{
299	/* At least one of these has key_values. */	380	/* At least one of these has key_values. */
300	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	381	if (ob1->kv.empty () != ob2->kv.empty ())
301	/* One has fields, but the other one doesn't. */	382	return 0; /* One has fields, but the other one doesn't. */
		383
		384	if (!compare_ob_value_lists (ob1, ob2))
302	return 0;	385	return 0;
303	else if (!compare_ob_value_lists (ob1, ob2))
304	return 0;
305	}	386	}
306		387
307	//TODO: generate an event or call into perl for additional checks
308	if (ob1->self || ob2->self)	388	if (ob1->self || ob2->self)
309	{	389	{
310	ob1->optimise ();	390	ob1->optimise ();
311	ob2->optimise ();	391	ob2->optimise ();
312		392
313	if (ob1->self || ob2->self)	393	if (ob1->self || ob2->self)
		394	{
		395	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		396	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		397
		398	if (k1 != k2)
314	return 0;	399	return 0;
		400
		401	if (k1 == 0)
		402	return 1;
		403
		404	if (!cfperl_can_merge (ob1, ob2))
		405	return 0;
		406	}
315	}	407	}
316		408
317	/* Everything passes, must be OK. */	409	/* Everything passes, must be OK. */
318	return 1;	410	return 1;
319	}	411	}
320		412
		413	// find player who can see this object
		414	object *
		415	object::visible_to () const
		416	{
		417	if (client_visible () && !flag [FLAG_REMOVED])
		418	{
		419	// see if we are in a container of sorts
		420	if (env)
		421	{
		422	// the player inventory itself is always visible
		423	if (env->is_player ())
		424	return env;
		425
		426	// else a player could have our env open
		427	object *envest = env->outer_env_or_self ();
		428
		429	// the player itself is always on a map, so we will find him here
		430	// even if our inv is in a player.
		431	if (envest->is_on_map ())
		432	if (object *pl = envest->ms ().player ())
		433	if (pl->container_ () == env)
		434	return pl;
		435	}
		436	else
		437	{
		438	// maybe there is a player standing on the same mapspace
		439	// this will catch the case where "this" is a player
		440	if (object *pl = ms ().player ())
		441	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		442	|| pl->container_ () == this)
		443	return pl;
		444	}
		445	}
		446
		447	return 0;
		448	}
		449
		450	// adjust weight per container type ("of holding")
		451	static uint32
		452	weight_adjust_for (object *op, uint32 weight)
		453	{
		454	return op->type == CONTAINER
		455	? weight - weight * op->stats.Str / 100
		456	: weight;
		457	}
		458
321	/*	459	/*
		460	* subtracts, then adds, the specified weight to an object,
		461	* and also updates how much the environment(s) is/are carrying.
		462	*/
		463	static void
		464	adjust_weight (object *op, sint32 sub, sint32 add)
		465	{
		466	while (op)
		467	{
		468	sint32 ocarrying = op->carrying;
		469
		470	op->carrying -= weight_adjust_for (op, sub);
		471	op->carrying += weight_adjust_for (op, add);
		472
		473	if (object *pl = op->visible_to ())
		474	if (pl != op) // player is handled lazily
		475	esrv_update_item (UPD_WEIGHT, pl, op);
		476
		477	sub = ocarrying;
		478	add = op->carrying;
		479
		480	op = op->env;
		481	}
		482	}
		483
		484	/*
322	* sum_weight() is a recursive function which calculates the weight	485	* this is a recursive function which calculates the weight
323	* an object is carrying. It goes through in figures out how much	486	* an object is carrying. It goes through op and figures out how much
324	* containers are carrying, and sums it up.	487	* containers are carrying, and sums it up.
325	*/	488	*/
326	long	489	void
327	sum_weight (object *op)	490	object::update_weight ()
328	{	491	{
329	long sum;	492	sint32 sum = 0;
330	object *inv;
331		493
332	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)	494	for (object *op = inv; op; op = op->below)
333	{
334	if (inv->inv)
335	sum_weight (inv);
336	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
337	}	495	{
		496	op->update_weight ();
338		497
339	if (op->type == CONTAINER && op->stats.Str)	498	sum += weight_adjust_for (this, op->total_weight ());
340	sum = (sum * (100 - op->stats.Str)) / 100;	499	}
341		500
342	if (op->carrying != sum)	501	if (sum != carrying)
		502	{
		503	if (carrying != sum && carrying)//D
		504	LOG (llevDebug, "updating carrying got %ld, expected %ld (%s)\n",
		505	(long long)sum, (long long)carrying, debug_desc ());
		506
343	op->carrying = sum;	507	carrying = sum;
344		508
345	return sum;	509	if (object *pl = visible_to ())
346	}	510	if (pl != this) // player is handled lazily
347		511	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	{	512	}
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	}	513	}
430		514
431	/*	515	/*
432	* Dumps an object. Returns output in the static global errmsg array.	516	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
433	*/	517	*/
434		518	char *
435	void
436	dump_object (object *op)	519	dump_object (object *op)
437	{	520	{
438	if (op == NULL)	521	if (!op)
439	{	522	return strdup ("[NULLOBJ]");
440	strcpy (errmsg, "[NULL pointer]");
441	return;
442	}
443	errmsg[0] = '\0';
444	dump_object2 (op);
445	}
446		523
447	void	524	object_freezer freezer;
448	dump_all_objects (void)	525	op->write (freezer);
449	{	526	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	}	527	}
458		528
459	/*	529	char *
460	* get_nearest_part(multi-object, object 2) returns the part of the	530	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	{	531	{
468	object *tmp, *closest;	532	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	}	533	}
478		534
479	/*	535	/*
480	* Returns the object which has the count-variable equal to the argument.	536	* Returns the object which has the count-variable equal to the argument.
		537	* VERRRY slow.
481	*/	538	*/
482
483	object *	539	object *
484	find_object (tag_t i)	540	find_object (tag_t i)
485	{	541	{
486	object *op;	542	for_all_objects (op)
487
488	for (op = objects; op != NULL; op = op->next)
489	if (op->count == i)	543	if (op->count == i)
490	break;
491	return op;	544	return op;
		545
		546	return 0;
		547	}
		548
		549	/*
		550	* Returns the object which has the uuid equal to the argument.
		551	* MOAR VERRRY slow.
		552	*/
		553
		554	object *
		555	find_object_uuid (UUID i)
		556	{
		557	for_all_objects (op)
		558	if (op->uuid == i)
		559	return op;
		560
		561	return 0;
492	}	562	}
493		563
494	/*	564	/*
495	* Returns the first object which has a name equal to the argument.	565	* Returns the first object which has a name equal to the argument.
496	* Used only by the patch command, but not all that useful.	566	* Used only by the patch command, but not all that useful.
497	* Enables features like "patch <name-of-other-player> food 999"	567	* Enables features like "patch <name-of-other-player> food 999"
498	*/	568	*/
499
500	object *	569	object *
501	find_object_name (const char *str)	570	find_object_name (const char *str)
502	{	571	{
503	shstr_cmp str_ (str);	572	shstr_cmp str_ (str);
504	object *op;
505		573
506	for (op = objects; op != NULL; op = op->next)	574	if (str_)
		575	for_all_objects (op)
507	if (op->name == str_)	576	if (op->name == str_)
508	break;	577	return op;
509		578
510	return op;	579	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	}	580	}
539		581
540	/*	582	/*
541	* Sets the owner and sets the skill and exp pointers to owner's current	583	* Sets the owner and sets the skill and exp pointers to owner's current
542	* skill and experience objects.	584	* skill and experience objects.
		585	* ACTUALLY NO! investigate! TODO
543	*/	586	*/
544	void	587	void
545	object::set_owner (object *owner)	588	object::set_owner (object *owner)
546	{	589	{
		590	// allow objects which own objects
547	if (!owner)	591	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)	592	while (owner->owner)
558	owner = owner->owner;	593	owner = owner->owner;
		594
		595	if (flag [FLAG_FREED])
		596	{
		597	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
		598	return;
		599	}
559		600
560	this->owner = owner;	601	this->owner = owner;
561	}	602	}
562		603
563	/* Zero the key_values on op, decrementing the shared-string
564	* refcounts and freeing the links.
565	*/
566	static void
567	free_key_values (object *op)
568	{
569	for (key_value *i = op->key_values; i != 0;)
570	{
571	key_value *next = i->next;
572	delete i;
573
574	i = next;
575	}
576
577	op->key_values = 0;
578	}
579
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	/*	604	/*
633	* copy object first frees everything allocated by the second object,	605	* copy_to first frees everything allocated by the dst object,
634	* and then copies the contends of the first object into the second	606	* and then copies the contents of itself into the second
635	* object, allocating what needs to be allocated. Basically, any	607	* object, allocating what needs to be allocated. Basically, any
636	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	608	* 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	609	* if the first object is freed, the pointers in the new object
638	* will point at garbage.	610	* will point at garbage.
639	*/	611	*/
640	void	612	void
641	copy_object (object *op2, object *op)	613	object::copy_to (object *dst)
642	{	614	{
643	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	615	dst->remove ();
644	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	616	*(object_copy *)dst = *this;
645		617
646	op2->clone (op);	618	// maybe move to object_copy?
		619	dst->kv = kv;
647		620
648	if (is_freed)	621	dst->flag [FLAG_REMOVED] = true;
649	SET_FLAG (op, FLAG_FREED);	622	dst->activate ();
650	if (is_removed)	623	}
651	SET_FLAG (op, FLAG_REMOVED);
652		624
653	if (op2->speed < 0)	625	void
654	op->speed_left = op2->speed_left - RANDOM () % 200 / 100.0;	626	object::instantiate ()
		627	{
		628	if (!uuid.seq) // HACK
		629	uuid = UUID::gen ();
655		630
656	/* Copy over key_values, if any. */	631	// TODO: unclean state changes, should not be done in copy_to AND instantiate
657	if (op2->key_values)	632	if (flag [FLAG_RANDOM_SPEED] && speed)
658	{	633	speed_left = - speed - rndm (); // TODO animation
659	key_value *tail = 0;	634	else
660	key_value *i;	635	speed_left = -1.;
661		636
662	op->key_values = 0;	637	/* copy the body_info to the body_used - this is only really
		638	* need for monsters, but doesn't hurt to do it for everything.
		639	* by doing so, when a monster is created, it has good starting
		640	* values for the body_used info, so when items are created
		641	* for it, they can be properly equipped.
		642	*/
		643	for (int i = NUM_BODY_LOCATIONS; i--; )
		644	slot[i].used = slot[i].info;
663		645
664	for (i = op2->key_values; i; i = i->next)	646	attachable::instantiate ();
665	{	647	}
666	key_value *new_link = new key_value;
667		648
668	new_link->next = 0;	649	object *
669	new_link->key = i->key;	650	object::clone ()
670	new_link->value = i->value;	651	{
		652	object *neu = create ();
		653	copy_to (neu);
671		654
672	/* Try and be clever here, too. */	655	// TODO: unclean state changes, should not be done in clone AND instantiate
673	if (!op->key_values)	656	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
674	{	657	neu->speed_left = - neu->speed - rndm (); // TODO animation
675	op->key_values = new_link;
676	tail = new_link;
677	}
678	else
679	{
680	tail->next = new_link;
681	tail = new_link;
682	}
683	}
684	}
685		658
686	update_ob_speed (op);	659	neu->map = map; // not copied by copy_to
		660	return neu;
687	}	661	}
688		662
689	/*	663	/*
690	* If an object with the IS_TURNABLE() flag needs to be turned due	664	* 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	665	* 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.	666	* be called to update the face variable, _and_ how it looks on the map.
693	*/	667	*/
694
695	void	668	void
696	update_turn_face (object *op)	669	update_turn_face (object *op)
697	{	670	{
698	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || op->arch == NULL)	671	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
699	return;	672	return;
		673
700	SET_ANIMATION (op, op->direction);	674	SET_ANIMATION (op, op->direction);
701	update_object (op, UP_OBJ_FACE);	675	update_object (op, UP_OBJ_FACE);
702	}	676	}
703		677
704	/*	678	/*
705	* Updates the speed of an object. If the speed changes from 0 to another	679	* 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.	680	* 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.	681	* This function needs to be called whenever the speed of an object changes.
708	*/	682	*/
709	void	683	void
710	update_ob_speed (object *op)	684	object::set_speed (float speed)
711	{	685	{
712	extern int arch_init;	686	this->speed = speed;
713		687
714	/* No reason putting the archetypes objects on the speed list,	688	if (has_active_speed ())
715	* since they never really need to be updated.	689	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	690	else
747	{	691	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	}	692	}
771		693
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	/*	694	/*
804	* update_object() updates the array which represents the map.	695	* update_object() updates the the map.
805	* It takes into account invisible objects (and represent squares covered	696	* It takes into account invisible objects (and represent squares covered
806	* by invisible objects by whatever is below them (unless it's another	697	* by invisible objects by whatever is below them (unless it's another
807	* invisible object, etc...)	698	* invisible object, etc...)
808	* If the object being updated is beneath a player, the look-window	699	* 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	700	* of that player is updated (this might be a suboptimal way of
810	* updating that window, though, since update_object() is called _often_)	701	* updating that window, though, since update_object() is called _often_)
811	*	702	*
812	* action is a hint of what the caller believes need to be done.	703	* 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:	704	* current action are:
818	* UP_OBJ_INSERT: op was inserted	705	* UP_OBJ_INSERT: op was inserted
819	* UP_OBJ_REMOVE: op was removed	706	* UP_OBJ_REMOVE: op was removed
820	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	707	* 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.	708	* as that is easier than trying to look at what may have changed.
822	* UP_OBJ_FACE: only the objects face has changed.	709	* UP_OBJ_FACE: only the objects face has changed.
823	*/	710	*/
824
825	void	711	void
826	update_object (object *op, int action)	712	update_object (object *op, int action)
827	{	713	{
828	int update_now = 0, flags;	714	if (!op)
829	MoveType move_on, move_off, move_block, move_slow;
830
831	if (op == NULL)
832	{	715	{
833	/* this should never happen */	716	/* this should never happen */
834	LOG (llevDebug, "update_object() called for NULL object.\n");	717	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
835	return;	718	return;
836	}	719	}
837		720
838	if (op->env != NULL)	721	if (!op->is_on_map ())
839	{	722	{
840	/* Animation is currently handled by client, so nothing	723	/* Animation is currently handled by client, so nothing
841	* to do in this case.	724	* to do in this case.
842	*/	725	*/
843	return;	726	return;
844	}	727	}
845		728
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 */	729	/* 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))	730	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
854	{	731	{
855	LOG (llevError, "update_object() called for object out of map!\n");	732	LOG (llevError, "update_object() called for object out of map!\n");
856	#ifdef MANY_CORES	733	#ifdef MANY_CORES
857	abort ();	734	abort ();
858	#endif	735	#endif
859	return;	736	return;
860	}	737	}
861		738
862	flags = GET_MAP_FLAGS (op->map, op->x, op->y);	739	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		740
		741	if (!(m.flags_ & P_UPTODATE))
		742	/* nop */;
869	if (action == UP_OBJ_INSERT)	743	else if (action == UP_OBJ_INSERT)
870	{	744	{
		745	#if 0
		746	// this is likely overkill, TODO: revisit (schmorp)
871	if (QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	747	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
872	update_now = 1;	748	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
873		749	|| (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))	750	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
884	update_now = 1;	751	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
885		752	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
886	if ((move_on | op->move_on) != move_on)	753	|| (m.move_on | op->move_on ) != m.move_on
887	update_now = 1;
888
889	if ((move_off | op->move_off) != move_off)	754	|| (m.move_off | op->move_off ) != m.move_off
890	update_now = 1;	755	|| (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	756	/* This isn't perfect, but I don't expect a lot of objects to
893	* to have move_allow right now.	757	* have move_allow right now.
894	*/	758	*/
895	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	759	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
896	update_now = 1;	760	m.invalidate ();
897		761	#else
898	if ((move_slow | op->move_slow) != move_slow)	762	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
899	update_now = 1;	763	m.invalidate ();
		764	#endif
900	}	765	}
901	/* if the object is being removed, we can't make intelligent	766	/* if the object is being removed, we can't make intelligent
902	* decisions, because remove_ob can't really pass the object	767	* decisions, because remove_ob can't really pass the object
903	* that is being removed.	768	* that is being removed.
904	*/	769	*/
905	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)	770	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
906	update_now = 1;	771	m.invalidate ();
907	else if (action == UP_OBJ_FACE)	772	else if (action == UP_OBJ_FACE)
908	/* Nothing to do for that case */ ;	773	/* Nothing to do for that case */ ;
909	else	774	else
910	LOG (llevError, "update_object called with invalid action: %d\n", action);	775	LOG (llevError, "update_object called with invalid action: %d\n", action);
911		776
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)	777	if (op->more)
919	update_object (op->more, action);	778	update_object (op->more, action);
920	}	779	}
921		780
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	//printf ("free_mortal(%p,%ld,%ld)\n", *i, pticks, (*i)->count);//D
933	//freed.push_back (*i);//D
934	delete *i;
935	mortals.erase (i);
936	}
937
938	if (mortals.size() && 0)//D
939	LOG (llevDebug, "%d objects in mortal queue\n", mortals.size());//D
940	}
941
942	object::object ()	781	object::object ()
943	{	782	{
944	SET_FLAG (this, FLAG_REMOVED);	783	this->set_flag (FLAG_REMOVED);
945		784
946	expmul = 1.0;	785	//expmul = 1.0; declared const for the time being
947	face = blank_face;	786	face = blank_face;
948	attacked_by_count = -1;	787	material = MATERIAL_NULL;
949	}	788	}
950		789
951	object::~object ()	790	object::~object ()
952	{	791	{
953	free_key_values (this);	792	unlink ();
		793
		794	kv.clear ();
954	}	795	}
955		796
956	void object::link ()	797	void object::link ()
957	{	798	{
958	count = ++ob_count;	799	assert (!index);//D
959	uuid = gen_uuid ();	800	uuid = UUID::gen ();
960		801
961	prev = 0;	802	refcnt_inc ();
962	next = objects;	803	objects.insert (this);
963		804
964	if (objects)	805	++create_count;
965	objects->prev = this;
966		806
967	objects = this;
968	}	807	}
969		808
970	void object::unlink ()	809	void object::unlink ()
971	{	810	{
972	//count = 0;//D	811	if (!index)
973	if (!prev && !next) return;//D	812	return;
974		813
975	if (this == objects)	814	++destroy_count;
976	objects = next;
977		815
978	/* Remove this object from the list of used objects */	816	objects.erase (this);
979	if (prev) prev->next = next;	817	refcnt_dec ();
980	if (next) next->prev = prev;
981
982	prev = 0;
983	next = 0;
984	}	818	}
985		819
986	object *object::create ()	820	void
		821	object::activate ()
987	{	822	{
988	object *op;	823	/* If already on active list, don't do anything */
		824	if (active)
		825	return;
989		826
990	if (freed.empty ())	827	if (has_active_speed ())
991	op = new object;	828	{
		829	if (flag [FLAG_FREED])
		830	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
		831
		832	actives.insert (this);
		833	}
		834	}
		835
		836	void
		837	object::activate_recursive ()
		838	{
		839	activate ();
		840
		841	for (object *op = inv; op; op = op->below)
		842	op->activate_recursive ();
		843	}
		844
		845	/* This function removes object 'op' from the list of active
		846	* objects.
		847	* This should only be used for style maps or other such
		848	* reference maps where you don't want an object that isn't
		849	* in play chewing up cpu time getting processed.
		850	* The reverse of this is to call update_ob_speed, which
		851	* will do the right thing based on the speed of the object.
		852	*/
		853	void
		854	object::deactivate ()
		855	{
		856	/* If not on the active list, nothing needs to be done */
		857	if (!active)
		858	return;
		859
		860	actives.erase (this);
		861	}
		862
		863	void
		864	object::deactivate_recursive ()
		865	{
		866	for (object *op = inv; op; op = op->below)
		867	op->deactivate_recursive ();
		868
		869	deactivate ();
		870	}
		871
		872	void
		873	object::set_flag_inv (int flag, int value)
		874	{
		875	for (object *op = inv; op; op = op->below)
		876	{
		877	op->flag [flag] = value;
		878	op->set_flag_inv (flag, value);
		879	}
		880	}
		881
		882	/*
		883	* Remove and free all objects in the inventory of the given object.
		884	* object.c ?
		885	*/
		886	void
		887	object::destroy_inv (bool drop_to_ground)
		888	{
		889	// need to check first, because the checks below might segfault
		890	// as we might be on an invalid mapspace and crossfire code
		891	// is too buggy to ensure that the inventory is empty.
		892	// corollary: if you create arrows etc. with stuff in its inventory,
		893	// cf will crash below with off-map x and y
		894	if (!inv)
		895	return;
		896
		897	/* Only if the space blocks everything do we not process -
		898	* if some form of movement is allowed, let objects
		899	* drop on that space.
		900	*/
		901	if (!drop_to_ground
		902	|| !map
		903	|| !map->linkable ()
		904	|| map->no_drop
		905	|| ms ().move_block == MOVE_ALL)
		906	{
		907	while (inv)
		908	inv->destroy ();
		909	}
992	else	910	else
993	{	911	{ /* Put objects in inventory onto this space */
994	// highly annoying, but the only way to get it stable right now	912	while (inv)
995	op = freed.back ();
996	freed.pop_back ();
997	op->~object ();
998	new ((void *) op) object;
999	}
1000
1001	op->link ();
1002	return op;
1003	}
1004
1005	/*
1006	* free_object() frees everything allocated by an object, removes
1007	* it from the list of used objects, and puts it on the list of
1008	* free objects. The IS_FREED() flag is set in the object.
1009	* The object must have been removed by remove_ob() first for
1010	* this function to succeed.
1011	*
1012	* If free_inventory is set, free inventory as well. Else drop items in
1013	* inventory to the ground.
1014	*/
1015	void object::free (bool free_inventory)
1016	{
1017	if (QUERY_FLAG (this, FLAG_FREED))
1018	return;
1019
1020	if (QUERY_FLAG (this, FLAG_FRIENDLY))
1021	remove_friendly_object (this);
1022
1023	if (!QUERY_FLAG (this, FLAG_REMOVED))
1024	remove_ob (this);
1025
1026	SET_FLAG (this, FLAG_FREED);
1027
1028	//printf ("free(%p,%ld,%ld)\n", this, pticks, count);//D
1029
1030	if (more)
1031	{
1032	more->free (free_inventory);
1033	more = 0;
1034	}
1035
1036	if (inv)
1037	{
1038	/* Only if the space blocks everything do we not process -
1039	* if some form of movement is allowed, let objects
1040	* drop on that space.
1041	*/
1042	if (free_inventory || !map || map->in_memory != MAP_IN_MEMORY || GET_MAP_MOVE_BLOCK (map, x, y) == MOVE_ALL)
1043	{	913	{
1044	object *op = inv;	914	object *op = inv;
1045		915
1046	while (op)	916	if (op->flag [FLAG_STARTEQUIP]
1047	{	917	|| op->flag [FLAG_NO_DROP]
1048	object *tmp = op->below;	918	|| op->type == RUNE
1049	op->free (free_inventory);	919	|| op->type == TRAP
1050	op = tmp;	920	|| op->flag [FLAG_IS_A_TEMPLATE]
1051	}	921	|| op->flag [FLAG_DESTROY_ON_DEATH])
		922	op->destroy ();
		923	else
		924	map->insert (op, x, y);
1052	}	925	}
1053	else	926	}
1054	{ /* Put objects in inventory onto this space */	927	}
1055	object *op = inv;
1056		928
1057	while (op)	929	/*
1058	{	930	* Remove and free all objects in the inventory of the given object.
1059	object *tmp = op->below;	931	* Unlike destroy_inv, this assumes the *this is destroyed as well
1060		932	* well, so we can (and have to!) take shortcuts.
1061	remove_ob (op);	933	*/
1062		934	void
1063	if (QUERY_FLAG (op, FLAG_STARTEQUIP)	935	object::destroy_inv_fast ()
1064	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE || op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))	936	{
1065	free_object (op);	937	while (object *op = inv)
1066	else
1067	{
1068	op->x = x;
1069	op->y = y;
1070	insert_ob_in_map (op, map, 0, 0); /* Insert in same map as the envir */
1071	}
1072
1073	op = tmp;
1074	}
1075	}
1076	}	938	{
		939	// remove from object the fast way
		940	op->flag [FLAG_REMOVED] = true;
		941	op->env = 0;
		942	if ((inv = inv->below))
		943	inv->above = 0;
1077		944
1078	owner = 0;	945	// then destroy
		946	op->destroy ();
		947	}
		948	}
1079		949
1080	/* Remove object from the active list */	950	void
1081	speed = 0;	951	object::freelist_free (int count)
1082	update_ob_speed (this);	952	{
		953	while (count-- && freelist)
		954	{
		955	freelist_item *next = freelist->next;
		956	// count is being "destroyed"
1083		957
		958	sfree ((char *)freelist, sizeof (object));
		959
		960	freelist = next;
		961	--free_count;
		962	}
		963	}
		964
		965	object *
		966	object::create ()
		967	{
		968	object *op;
		969
		970	if (freelist)
		971	{
		972	freelist_item li = *freelist;
		973	memset (freelist, 0, sizeof (object));
		974
		975	op = new (freelist) object;
		976	op->count = li.count;
		977
		978	freelist = li.next;
		979	--free_count;
		980	}
		981	else
		982	{
		983	void *ni = salloc0<char> (sizeof (object));
		984
		985	op = new(ni) object;
		986
		987	op->count = ++object_count;
		988	}
		989
		990	op->link ();
		991
		992	return op;
		993	}
		994
		995	void
		996	object::do_delete ()
		997	{
		998	uint32_t count = this->count;
		999
		1000	this->~object ();
		1001
		1002	freelist_item *li = (freelist_item *)this;
		1003	li->next = freelist;
		1004	li->count = count;
		1005
		1006	freelist = li;
		1007	++free_count;
		1008	}
		1009
		1010	static struct freed_map : maptile
		1011	{
		1012	freed_map ()
		1013	: maptile (3, 3)
		1014	{
		1015	path = "<freed objects map>";
		1016	name = "/internal/freed_objects_map";
		1017	no_drop = 1;
		1018	no_reset = 1;
		1019
		1020	in_memory = MAP_ACTIVE;
		1021	}
		1022
		1023	~freed_map ()
		1024	{
		1025	destroy ();
		1026	}
		1027	} freed_map; // freed objects are moved here to avoid crashes
		1028
		1029	void
		1030	object::do_destroy ()
		1031	{
		1032	if (flag [FLAG_IS_LINKED])
		1033	remove_link ();
		1034
		1035	if (flag [FLAG_FRIENDLY])
		1036	remove_friendly_object (this);
		1037
		1038	remove ();
		1039
		1040	attachable::do_destroy ();
		1041
		1042	deactivate ();
1084	unlink ();	1043	unlink ();
1085		1044
1086	mortals.push_back (this);	1045	flag [FLAG_FREED] = 1;
1087	}
1088		1046
1089	/*	1047	// hack to ensure that freed objects still have a valid map
1090	* sub_weight() recursively (outwards) subtracts a number from the	1048	map = &freed_map;
1091	* weight of an object (and what is carried by it's environment(s)).	1049	x = 1;
1092	*/	1050	y = 1;
1093		1051
1094	void	1052	if (more)
1095	sub_weight (object *op, signed long weight)
1096	{
1097	while (op != NULL)
1098	{
1099	if (op->type == CONTAINER)
1100	{
1101	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1102	}
1103	op->carrying -= weight;
1104	op = op->env;
1105	}	1053	{
1106	}	1054	more->destroy ();
		1055	more = 0;
		1056	}
1107		1057
1108	/* remove_ob(op):	1058	head = 0;
		1059
		1060	// clear those pointers that likely might cause circular references
		1061	owner = 0;
		1062	enemy = 0;
		1063	attacked_by = 0;
		1064	current_weapon = 0;
		1065	}
		1066
		1067	void
		1068	object::destroy ()
		1069	{
		1070	if (destroyed ())
		1071	return;
		1072
		1073	if (!is_head () && !head->destroyed ())
		1074	{
		1075	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1076	head->destroy ();
		1077	return;
		1078	}
		1079
		1080	destroy_inv_fast ();
		1081
		1082	if (is_head ())
		1083	if (sound_destroy)
		1084	play_sound (sound_destroy);
		1085	else if (flag [FLAG_MONSTER])
		1086	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1087
		1088	attachable::destroy ();
		1089	}
		1090
		1091	/* op->remove ():
1109	* This function removes the object op from the linked list of objects	1092	* This function removes the object op from the linked list of objects
1110	* which it is currently tied to. When this function is done, the	1093	* which it is currently tied to. When this function is done, the
1111	* object will have no environment. If the object previously had an	1094	* object will have no environment. If the object previously had an
1112	* environment, the x and y coordinates will be updated to	1095	* environment, the x and y coordinates will be updated to
1113	* the previous environment.	1096	* the previous environment.
1114	* Beware: This function is called from the editor as well!
1115	*/	1097	*/
1116
1117	void	1098	void
1118	remove_ob (object *op)	1099	object::do_remove ()
1119	{	1100	{
1120	object *	1101	if (flag [FLAG_REMOVED])
1121	tmp, *
1122	last = NULL;
1123	object *
1124	otmp;
1125
1126	tag_t
1127	tag;
1128	int
1129	check_walk_off;
1130	mapstruct *
1131	m;
1132
1133	sint16
1134	x,
1135	y;
1136
1137	if (QUERY_FLAG (op, FLAG_REMOVED))
1138	return;	1102	return;
1139		1103
1140	SET_FLAG (op, FLAG_REMOVED);	1104	INVOKE_OBJECT (REMOVE, this);
1141		1105
1142	if (op->more != NULL)	1106	flag [FLAG_REMOVED] = true;
1143	remove_ob (op->more);	1107
		1108	if (more)
		1109	more->remove ();
1144		1110
1145	/*	1111	/*
1146	* In this case, the object to be removed is in someones	1112	* In this case, the object to be removed is in someones
1147	* inventory.	1113	* inventory.
1148	*/	1114	*/
1149	if (op->env != NULL)	1115	if (env)
1150	{	1116	{
1151	if (op->nrof)	1117	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1152	sub_weight (op->env, op->weight * op->nrof);	1118	if (object *pl = visible_to ())
1153	else	1119	esrv_del_item (pl->contr, count);
1154	sub_weight (op->env, op->weight + op->carrying);	1120	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1155		1121
1156	/* NO_FIX_PLAYER is set when a great many changes are being	1122	adjust_weight (env, total_weight (), 0);
1157	* made to players inventory. If set, avoiding the call
1158	* to save cpu time.
1159	*/
1160	if ((otmp = is_player_inv (op->env)) != NULL && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1161	fix_player (otmp);
1162		1123
1163	if (op->above != NULL)	1124	object *pl = in_player ();
1164	op->above->below = op->below;
1165	else
1166	op->env->inv = op->below;
1167
1168	if (op->below != NULL)
1169	op->below->above = op->above;
1170		1125
1171	/* we set up values so that it could be inserted into	1126	/* we set up values so that it could be inserted into
1172	* the map, but we don't actually do that - it is up	1127	* the map, but we don't actually do that - it is up
1173	* to the caller to decide what we want to do.	1128	* to the caller to decide what we want to do.
1174	*/	1129	*/
1175	op->x = op->env->x, op->y = op->env->y;
1176	op->map = op->env->map;	1130	map = env->map;
1177	op->above = NULL, op->below = NULL;
1178	op->env = NULL;
1179	}
1180	else if (op->map)
1181	{
1182	x = op->x;	1131	x = env->x;
1183	y = op->y;	1132	y = env->y;
1184	m = get_map_from_coord (op->map, &x, &y);
1185		1133
1186	if (!m)	1134	// make sure cmov optimisation is applicable
		1135	*(above ? &above->below : &env->inv) = below;
		1136	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1137
		1138	above = 0;
		1139	below = 0;
		1140	env = 0;
		1141
		1142	if (pl && pl->is_player ())
1187	{	1143	{
1188	LOG (llevError, "remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",	1144	if (expect_false (pl->contr->combat_ob == this))
1189	op->map->path, op->x, op->y);
1190	/* in old days, we used to set x and y to 0 and continue.
1191	* it seems if we get into this case, something is probablye
1192	* screwed up and should be fixed.
1193	*/	1145	{
1194	abort ();	1146	pl->apply (pl->contr->combat_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1147	pl->contr->combat_ob = 0;
		1148	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
		1149	}
		1150
		1151	if (expect_false (pl->contr->ranged_ob == this))
		1152	{
		1153	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1154	pl->contr->ranged_ob = 0;
		1155	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1156	}
		1157
		1158	pl->contr->queue_stats_update ();
		1159
		1160	if (expect_false (glow_radius) && pl->is_on_map ())
		1161	update_all_los (pl->map, pl->x, pl->y);
1195	}	1162	}
		1163	}
		1164	else if (map)
		1165	{
		1166	map->dirty = true;
		1167	mapspace &ms = this->ms ();
1196		1168
1197	if (op->map != m)	1169	if (object *pl = ms.player ())
1198	LOG (llevDebug, "remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1199	op->map->path, m->path, op->x, op->y, x, y);
1200
1201	/* Re did the following section of code - it looks like it had
1202	* lots of logic for things we no longer care about
1203	*/	1170	{
		1171	if (is_player ())
		1172	{
		1173	if (!flag [FLAG_WIZPASS])
		1174	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1175
		1176	// leaving a spot always closes any open container on the ground
		1177	if (container && !container->env)
		1178	// this causes spurious floorbox updates, but it ensures
		1179	// that the CLOSE event is being sent.
		1180	close_container ();
		1181
		1182	--map->players;
		1183	map->touch ();
		1184	}
		1185	else if (pl->container_ () == this)
		1186	{
		1187	// removing a container should close it
		1188	close_container ();
		1189	}
		1190	else
		1191	esrv_del_item (pl->contr, count);
		1192	}
1204		1193
1205	/* link the object above us */	1194	/* link the object above us */
1206	if (op->above)	1195	// re-link, make sure compiler can easily use cmove
1207	op->above->below = op->below;	1196	*(above ? &above->below : &ms.top) = below;
1208	else	1197	*(below ? &below->above : &ms.bot) = above;
1209	SET_MAP_TOP (m, x, y, op->below); /* we were top, set new top */
1210		1198
1211	/* Relink the object below us, if there is one */	1199	above = 0;
1212	if (op->below)	1200	below = 0;
1213	op->below->above = op->above;	1201
1214	else	1202	ms.invalidate ();
		1203
		1204	int check_walk_off = !flag [FLAG_NO_APPLY];
		1205
		1206	if (object *pl = ms.player ())
1215	{	1207	{
1216	/* Nothing below, which means we need to relink map object for this space	1208	if (pl->container_ () == this)
1217	* use translated coordinates in case some oddness with map tiling is	1209	/* If a container that the player is currently using somehow gets
1218	* evident	1210	* removed (most likely destroyed), update the player view
		1211	* appropriately.
1219	*/	1212	*/
1220	if (GET_MAP_OB (m, x, y) != op)	1213	pl->close_container ();
1221	{
1222	dump_object (op);
1223	LOG (llevError,
1224	"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);
1225	dump_object (GET_MAP_OB (m, x, y));
1226	LOG (llevError, "%s\n", errmsg);
1227	}
1228		1214
1229	SET_MAP_OB (m, x, y, op->above); /* goes on above it. */	1215	//TODO: the floorbox prev/next might need updating
		1216	//esrv_del_item (pl->contr, count);
		1217	//TODO: update floorbox to preserve ordering
		1218	if (pl->contr->ns)
		1219	pl->contr->ns->floorbox_update ();
1230	}	1220	}
1231		1221
1232	op->above = 0;	1222	if (check_walk_off)
1233	op->below = 0;	1223	for (object *above, *tmp = ms.bot; tmp; tmp = above)
1234
1235	if (op->map->in_memory == MAP_SAVING)
1236	return;
1237
1238	tag = op->count;
1239	check_walk_off = !QUERY_FLAG (op, FLAG_NO_APPLY);
1240
1241	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1242	{	1224	{
		1225	above = tmp->above;
		1226
1243	/* No point updating the players look faces if he is the object	1227	/* No point updating the players look faces if he is the object
1244	* being removed.	1228	* being removed.
1245	*/
1246
1247	if (tmp->type == PLAYER && tmp != op)
1248	{
1249	/* If a container that the player is currently using somehow gets
1250	* removed (most likely destroyed), update the player view
1251	* appropriately.
1252	*/	1229	*/
1253	if (tmp->container == op)
1254	{
1255	CLEAR_FLAG (op, FLAG_APPLIED);
1256	tmp->container = NULL;
1257	}
1258		1230
1259	tmp->contr->socket.update_look = 1;	1231	/* See if object moving off should effect something */
		1232	if ((move_type & tmp->move_off)
		1233	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
		1234	move_apply (tmp, this, 0);
1260	}	1235	}
1261		1236
1262	/* See if player moving off should effect something */	1237	if (affects_los ())
1263	if (check_walk_off && ((op->move_type & tmp->move_off) && (op->move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1264	{
1265	move_apply (tmp, op, NULL);
1266
1267	if (was_destroyed (op, tag))
1268	{
1269	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed " "leaving object\n", &tmp->name, &tmp->arch->name);
1270	}
1271	}
1272
1273	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1274
1275	if (tmp->above == tmp)
1276	tmp->above = NULL;
1277
1278	last = tmp;
1279	}
1280
1281	/* last == NULL of there are no objects on this space */
1282	if (last == NULL)
1283	{
1284	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1285	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1286	* those out anyways, and if there are any flags set right now, they won't
1287	* be correct anyways.
1288	*/
1289	SET_MAP_FLAGS (op->map, op->x, op->y, P_NEED_UPDATE);
1290	update_position (op->map, op->x, op->y);
1291	}
1292	else
1293	update_object (last, UP_OBJ_REMOVE);
1294
1295	if (QUERY_FLAG (op, FLAG_BLOCKSVIEW) || (op->glow_radius != 0))
1296	update_all_los (op->map, op->x, op->y);	1238	update_all_los (map, x, y);
1297	}	1239	}
1298	}	1240	}
1299		1241
1300	/*	1242	/*
1301	* merge_ob(op,top):	1243	* merge_ob(op,top):
…		…
1309	merge_ob (object *op, object *top)	1251	merge_ob (object *op, object *top)
1310	{	1252	{
1311	if (!op->nrof)	1253	if (!op->nrof)
1312	return 0;	1254	return 0;
1313		1255
1314	if (top == NULL)	1256	if (!top)
1315	for (top = op; top != NULL && top->above != NULL; top = top->above);	1257	for (top = op; top && top->above; top = top->above)
		1258	;
1316		1259
1317	for (; top != NULL; top = top->below)	1260	for (; top; top = top->below)
1318	{	1261	if (object::can_merge (op, top))
1319	if (top == op)
1320	continue;
1321	if (CAN_MERGE (op, top))
1322	{	1262	{
1323	top->nrof += op->nrof;	1263	top->nrof += op->nrof;
1324		1264
1325	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1265	if (object *pl = top->visible_to ())
1326	op->weight = 0; /* Don't want any adjustements now */	1266	esrv_update_item (UPD_NROF, pl, top);
1327	remove_ob (op);	1267
1328	free_object (op);	1268	op->weight = 0; // cancel the addition above
		1269	op->carrying = 0; // must be 0 already
		1270
		1271	op->destroy ();
		1272
1329	return top;	1273	return top;
1330	}	1274	}
1331	}
1332		1275
1333	return NULL;	1276	return 0;
1334	}	1277	}
1335		1278
		1279	void
		1280	object::expand_tail ()
		1281	{
		1282	if (more)
		1283	return;
		1284
		1285	object *prev = this;
		1286
		1287	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1288	{
		1289	object *op = at->instance ();
		1290
		1291	op->name = name;
		1292	op->name_pl = name_pl;
		1293	op->title = title;
		1294
		1295	op->head = this;
		1296	prev->more = op;
		1297
		1298	prev = op;
		1299	}
		1300	}
		1301
1336	/*	1302	/*
1337	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1303	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1338	* job preparing multi-part monsters	1304	* job preparing multi-part monsters.
1339	*/	1305	*/
1340	object *	1306	object *
1341	insert_ob_in_map_at (object *op, mapstruct *m, object *originator, int flag, int x, int y)	1307	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1342	{	1308	{
1343	object *tmp;	1309	op->remove ();
1344		1310
1345	if (op->head)
1346	op = op->head;
1347
1348	for (tmp = op; tmp; tmp = tmp->more)	1311	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1349	{	1312	{
1350	tmp->x = x + tmp->arch->clone.x;	1313	tmp->x = x + tmp->arch->x;
1351	tmp->y = y + tmp->arch->clone.y;	1314	tmp->y = y + tmp->arch->y;
1352	}	1315	}
1353		1316
1354	return insert_ob_in_map (op, m, originator, flag);	1317	return insert_ob_in_map (op, m, originator, flag);
1355	}	1318	}
1356		1319
…		…
1369	* Passing 0 for flag gives proper default values, so flag really only needs	1332	* Passing 0 for flag gives proper default values, so flag really only needs
1370	* to be set if special handling is needed.	1333	* to be set if special handling is needed.
1371	*	1334	*
1372	* Return value:	1335	* Return value:
1373	* new object if 'op' was merged with other object	1336	* new object if 'op' was merged with other object
1374	* NULL if 'op' was destroyed	1337	* NULL if there was an error (destroyed, blocked etc.)
1375	* just 'op' otherwise	1338	* just 'op' otherwise
1376	*/	1339	*/
1377
1378	object *	1340	object *
1379	insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1341	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1380	{	1342	{
1381	object *tmp, *top, *floor = NULL;	1343	op->remove ();
1382	sint16 x, y;
1383		1344
1384	if (QUERY_FLAG (op, FLAG_FREED))	1345	if (m == &freed_map)//D TODO: remove soon
1385	{	1346	{//D
1386	LOG (llevError, "Trying to insert freed object!\n");	1347	LOG (llevError | logBacktrace, "tries to insert object on freed objects map: %s", op->debug_desc ());//D
1387	return NULL;
1388	}	1348	}//D
1389
1390	if (m == NULL)
1391	{
1392	dump_object (op);
1393	LOG (llevError, "Trying to insert in null-map!\n%s\n", errmsg);
1394	return op;
1395	}
1396
1397	if (out_of_map (m, op->x, op->y))
1398	{
1399	dump_object (op);
1400	LOG (llevError, "Trying to insert object outside the map.\n%s\n", errmsg);
1401	#ifdef MANY_CORES
1402	/* Better to catch this here, as otherwise the next use of this object
1403	* is likely to cause a crash. Better to find out where it is getting
1404	* improperly inserted.
1405	*/
1406	abort ();
1407	#endif
1408	return op;
1409	}
1410
1411	if (!QUERY_FLAG (op, FLAG_REMOVED))
1412	{
1413	dump_object (op);
1414	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", errmsg);
1415	return op;
1416	}
1417
1418	if (op->more != NULL)
1419	{
1420	/* The part may be on a different map. */
1421
1422	object *more = op->more;
1423
1424	/* We really need the caller to normalize coordinates - if
1425	* we set the map, that doesn't work if the location is within
1426	* a map and this is straddling an edge. So only if coordinate
1427	* is clear wrong do we normalize it.
1428	*/
1429	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1430	more->map = get_map_from_coord (m, &more->x, &more->y);
1431	else if (!more->map)
1432	{
1433	/* For backwards compatibility - when not dealing with tiled maps,
1434	* more->map should always point to the parent.
1435	*/
1436	more->map = m;
1437	}
1438
1439	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
1440	{
1441	if (!op->head)
1442	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
1443
1444	return NULL;
1445	}
1446	}
1447
1448	CLEAR_FLAG (op, FLAG_REMOVED);
1449		1349
1450	/* Ideally, the caller figures this out. However, it complicates a lot	1350	/* Ideally, the caller figures this out. However, it complicates a lot
1451	* of areas of callers (eg, anything that uses find_free_spot would now	1351	* of areas of callers (eg, anything that uses find_free_spot would now
1452	* need extra work	1352	* need extra work
1453	*/	1353	*/
1454	op->map = get_map_from_coord (m, &op->x, &op->y);	1354	maptile *newmap = m;
1455	x = op->x;	1355	if (!xy_normalise (newmap, op->x, op->y))
1456	y = op->y;	1356	{
		1357	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
		1358	return 0;
		1359	}
		1360
		1361	if (object *more = op->more)
		1362	if (!insert_ob_in_map (more, m, originator, flag))
		1363	return 0;
		1364
		1365	op->flag [FLAG_REMOVED] = false;
		1366	op->env = 0;
		1367	op->map = newmap;
		1368
		1369	mapspace &ms = op->ms ();
1457		1370
1458	/* this has to be done after we translate the coordinates.	1371	/* this has to be done after we translate the coordinates.
1459	*/	1372	*/
1460	if (op->nrof && !(flag & INS_NO_MERGE))	1373	if (op->nrof && !(flag & INS_NO_MERGE))
1461	for (tmp = GET_MAP_OB (op->map, x, y); tmp != NULL; tmp = tmp->above)	1374	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1462	if (CAN_MERGE (op, tmp))	1375	if (object::can_merge (op, tmp))
1463	{	1376	{
		1377	// TODO: we actually want to update tmp, not op,
		1378	// but some caller surely breaks when we return tmp
		1379	// from here :/
1464	op->nrof += tmp->nrof;	1380	op->nrof += tmp->nrof;
1465	remove_ob (tmp);	1381	tmp->destroy ();
1466	free_object (tmp);
1467	}	1382	}
1468		1383
1469	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1384	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1470	CLEAR_FLAG (op, FLAG_INV_LOCKED);	1385	op->clr_flag (FLAG_INV_LOCKED);
1471		1386
1472	if (!QUERY_FLAG (op, FLAG_ALIVE))	1387	if (!op->flag [FLAG_ALIVE])
1473	CLEAR_FLAG (op, FLAG_NO_STEAL);	1388	op->clr_flag (FLAG_NO_STEAL);
1474		1389
1475	if (flag & INS_BELOW_ORIGINATOR)	1390	if (flag & INS_BELOW_ORIGINATOR)
1476	{	1391	{
1477	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)	1392	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
1478	{	1393	{
1479	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1394	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1480	abort ();	1395	abort ();
1481	}	1396	}
1482		1397
		1398	if (!originator->is_on_map ())
		1399	{
		1400	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1401	op->debug_desc (), originator->debug_desc ());
		1402	abort ();
		1403	}
		1404
1483	op->above = originator;	1405	op->above = originator;
1484	op->below = originator->below;	1406	op->below = originator->below;
1485
1486	if (op->below)
1487	op->below->above = op;
1488	else
1489	SET_MAP_OB (op->map, op->x, op->y, op);
1490
1491	/* since *below* originator, no need to update top */
1492	originator->below = op;	1407	originator->below = op;
		1408
		1409	*(op->below ? &op->below->above : &ms.bot) = op;
1493	}	1410	}
1494	else	1411	else
1495	{	1412	{
		1413	object *floor = 0;
		1414	object *top = ms.top;
		1415
1496	/* If there are other objects, then */	1416	/* If there are other objects, then */
1497	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))	1417	if (top)
1498	{	1418	{
1499	object *last = NULL;
1500
1501	/*	1419	/*
1502	* If there are multiple objects on this space, we do some trickier handling.	1420	* If there are multiple objects on this space, we do some trickier handling.
1503	* We've already dealt with merging if appropriate.	1421	* We've already dealt with merging if appropriate.
1504	* Generally, we want to put the new object on top. But if	1422	* Generally, we want to put the new object on top. But if
1505	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1423	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
…		…
1508	* once we get to them. This reduces the need to traverse over all of	1426	* once we get to them. This reduces the need to traverse over all of
1509	* them when adding another one - this saves quite a bit of cpu time	1427	* them when adding another one - this saves quite a bit of cpu time
1510	* when lots of spells are cast in one area. Currently, it is presumed	1428	* when lots of spells are cast in one area. Currently, it is presumed
1511	* that flying non pickable objects are spell objects.	1429	* that flying non pickable objects are spell objects.
1512	*/	1430	*/
1513		1431	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1514	while (top != NULL)
1515	{	1432	{
1516	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))	1433	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
1517	floor = top;	1434	floor = tmp;
1518		1435
1519	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))	1436	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1520	{	1437	{
1521	/* We insert above top, so we want this object below this */	1438	/* We insert above top, so we want this object below this */
1522	top = top->below;	1439	top = tmp->below;
1523	break;	1440	break;
1524	}	1441	}
1525		1442
1526	last = top;
1527	top = top->above;	1443	top = tmp;
1528	}	1444	}
1529
1530	/* Don't want top to be NULL, so set it to the last valid object */
1531	top = last;
1532		1445
1533	/* We let update_position deal with figuring out what the space	1446	/* We let update_position deal with figuring out what the space
1534	* looks like instead of lots of conditions here.	1447	* looks like instead of lots of conditions here.
1535	* makes things faster, and effectively the same result.	1448	* makes things faster, and effectively the same result.
1536	*/	1449	*/
1537		1450
1538	/* Have object 'fall below' other objects that block view.	1451	/* Have object 'fall below' other objects that block view.
1539	* Unless those objects are exits, type 66	1452	* Unless those objects are exits.
1540	* If INS_ON_TOP is used, don't do this processing	1453	* If INS_ON_TOP is used, don't do this processing
1541	* Need to find the object that in fact blocks view, otherwise	1454	* Need to find the object that in fact blocks view, otherwise
1542	* stacking is a bit odd.	1455	* stacking is a bit odd.
1543	*/	1456	*/
1544	if (!(flag & INS_ON_TOP) &&	1457	if (!(flag & INS_ON_TOP)
1545	(get_map_flags (op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))	1458	&& ms.flags () & P_BLOCKSVIEW
		1459	&& (op->face && !faces [op->face].visibility))
1546	{	1460	{
		1461	object *last;
		1462
1547	for (last = top; last != floor; last = last->below)	1463	for (last = top; last != floor; last = last->below)
1548	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))	1464	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
1549	break;	1465	break;
		1466
1550	/* Check to see if we found the object that blocks view,	1467	/* Check to see if we found the object that blocks view,
1551	* and make sure we have a below pointer for it so that	1468	* and make sure we have a below pointer for it so that
1552	* we can get inserted below this one, which requires we	1469	* we can get inserted below this one, which requires we
1553	* set top to the object below us.	1470	* set top to the object below us.
1554	*/	1471	*/
1555	if (last && last->below && last != floor)	1472	if (last && last->below && last != floor)
1556	top = last->below;	1473	top = last->below;
1557	}	1474	}
1558	} /* If objects on this space */	1475	} /* If objects on this space */
1559		1476
1560	if (flag & INS_MAP_LOAD)
1561	top = GET_MAP_TOP (op->map, op->x, op->y);
1562
1563	if (flag & INS_ABOVE_FLOOR_ONLY)	1477	if (flag & INS_ABOVE_FLOOR_ONLY)
1564	top = floor;	1478	top = floor;
1565		1479
1566	/* Top is the object that our object (op) is going to get inserted above.	1480	// insert object above top, or bottom-most if top = 0
1567	*/
1568
1569	/* First object on this space */
1570	if (!top)	1481	if (!top)
1571	{	1482	{
1572	op->above = GET_MAP_OB (op->map, op->x, op->y);
1573
1574	if (op->above)
1575	op->above->below = op;
1576
1577	op->below = NULL;	1483	op->below = 0;
1578	SET_MAP_OB (op->map, op->x, op->y, op);	1484	op->above = ms.bot;
		1485	ms.bot = op;
		1486
		1487	*(op->above ? &op->above->below : &ms.top) = op;
1579	}	1488	}
1580	else	1489	else
1581	{ /* get inserted into the stack above top */	1490	{
1582	op->above = top->above;	1491	op->above = top->above;
1583
1584	if (op->above)
1585	op->above->below = op;	1492	top->above = op;
1586		1493
1587	op->below = top;	1494	op->below = top;
1588	top->above = op;	1495	*(op->above ? &op->above->below : &ms.top) = op;
1589	}	1496	}
		1497	}
1590		1498
1591	if (op->above == NULL)	1499	if (op->is_player ())
1592	SET_MAP_TOP (op->map, op->x, op->y, op);	1500	{
1593	} /* else not INS_BELOW_ORIGINATOR */
1594
1595	if (op->type == PLAYER)
1596	op->contr->do_los = 1;	1501	op->contr->do_los = 1;
		1502	++op->map->players;
		1503	op->map->touch ();
		1504	}
1597		1505
1598	/* If we have a floor, we know the player, if any, will be above	1506	op->map->dirty = true;
1599	* it, so save a few ticks and start from there.	1507
1600	*/	1508	if (object *pl = ms.player ())
1601	if (!(flag & INS_MAP_LOAD))	1509	//TODO: the floorbox prev/next might need updating
1602	for (tmp = floor ? floor : GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)	1510	//esrv_send_item (pl, op);
1603	if (tmp->type == PLAYER)	1511	//TODO: update floorbox to preserve ordering
1604	tmp->contr->socket.update_look = 1;	1512	if (pl->contr->ns)
		1513	pl->contr->ns->floorbox_update ();
1605		1514
1606	/* If this object glows, it may affect lighting conditions that are	1515	/* If this object glows, it may affect lighting conditions that are
1607	* visible to others on this map. But update_all_los is really	1516	* visible to others on this map. But update_all_los is really
1608	* an inefficient way to do this, as it means los for all players	1517	* an inefficient way to do this, as it means los for all players
1609	* on the map will get recalculated. The players could very well	1518	* on the map will get recalculated. The players could very well
1610	* be far away from this change and not affected in any way -	1519	* be far away from this change and not affected in any way -
1611	* this should get redone to only look for players within range,	1520	* this should get redone to only look for players within range,
1612	* or just updating the P_NEED_UPDATE for spaces within this area	1521	* or just updating the P_UPTODATE for spaces within this area
1613	* of effect may be sufficient.	1522	* of effect may be sufficient.
1614	*/	1523	*/
1615	if (MAP_DARKNESS (op->map) && (op->glow_radius != 0))	1524	if (op->affects_los ())
		1525	{
		1526	op->ms ().invalidate ();
1616	update_all_los (op->map, op->x, op->y);	1527	update_all_los (op->map, op->x, op->y);
		1528	}
1617		1529
1618	/* updates flags (blocked, alive, no magic, etc) for this map space */	1530	/* updates flags (blocked, alive, no magic, etc) for this map space */
1619	update_object (op, UP_OBJ_INSERT);	1531	update_object (op, UP_OBJ_INSERT);
1620		1532
		1533	INVOKE_OBJECT (INSERT, op);
		1534
1621	/* Don't know if moving this to the end will break anything. However,	1535	/* Don't know if moving this to the end will break anything. However,
1622	* we want to have update_look set above before calling this.	1536	* we want to have floorbox_update called before calling this.
1623	*	1537	*
1624	* check_move_on() must be after this because code called from	1538	* check_move_on() must be after this because code called from
1625	* check_move_on() depends on correct map flags (so functions like	1539	* check_move_on() depends on correct map flags (so functions like
1626	* blocked() and wall() work properly), and these flags are updated by	1540	* blocked() and wall() work properly), and these flags are updated by
1627	* update_object().	1541	* update_object().
1628	*/	1542	*/
1629		1543
1630	/* if this is not the head or flag has been passed, don't check walk on status */	1544	/* if this is not the head or flag has been passed, don't check walk on status */
1631	if (!(flag & INS_NO_WALK_ON) && !op->head)	1545	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
1632	{	1546	{
1633	if (check_move_on (op, originator))	1547	if (check_move_on (op, originator, flag))
1634	return NULL;	1548	return 0;
1635		1549
1636	/* If we are a multi part object, lets work our way through the check	1550	/* If we are a multi part object, let's work our way through the check
1637	* walk on's.	1551	* walk on's.
1638	*/	1552	*/
1639	for (tmp = op->more; tmp != NULL; tmp = tmp->more)	1553	for (object *tmp = op->more; tmp; tmp = tmp->more)
1640	if (check_move_on (tmp, originator))	1554	if (check_move_on (tmp, originator, flag))
1641	return NULL;	1555	return 0;
1642	}	1556	}
1643		1557
1644	return op;	1558	return op;
1645	}	1559	}
1646		1560
1647	/* this function inserts an object in the map, but if it	1561	/* this function inserts an object in the map, but if it
1648	* finds an object of its own type, it'll remove that one first.	1562	* finds an object of its own type, it'll remove that one first.
1649	* op is the object to insert it under: supplies x and the map.	1563	* op is the object to insert it under: supplies x and the map.
1650	*/	1564	*/
1651	void	1565	void
1652	replace_insert_ob_in_map (const char *arch_string, object *op)	1566	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1653	{	1567	{
1654	object *
1655	tmp;
1656	object *
1657	tmp1;
1658
1659	/* first search for itself and remove any old instances */	1568	/* first search for itself and remove any old instances */
1660		1569
1661	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)	1570	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1662	{
1663	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */	1571	if (tmp->arch->archname == archname) /* same archetype */
1664	{	1572	tmp->destroy ();
1665	remove_ob (tmp);
1666	free_object (tmp);
1667	}
1668	}
1669		1573
1670	tmp1 = arch_to_object (find_archetype (arch_string));	1574	object *tmp = archetype::find (archname)->instance ();
1671		1575
1672	tmp1->x = op->x;	1576	tmp->x = op->x;
1673	tmp1->y = op->y;	1577	tmp->y = op->y;
		1578
1674	insert_ob_in_map (tmp1, op->map, op, 0);	1579	insert_ob_in_map (tmp, op->map, op, 0);
1675	}	1580	}
1676
1677	/*
1678	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1679	* is returned contains nr objects, and the remaining parts contains
1680	* the rest (or is removed and freed if that number is 0).
1681	* On failure, NULL is returned, and the reason put into the
1682	* global static errmsg array.
1683	*/
1684		1581
1685	object *	1582	object *
1686	get_split_ob (object *orig_ob, uint32 nr)	1583	object::insert_at (object *where, object *originator, int flags)
1687	{	1584	{
1688	object *	1585	if (where->env)
1689	newob;	1586	return where->env->insert (this);
1690	int	1587	else
1691	is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1588	return where->map->insert (this, where->x, where->y, originator, flags);
1692
1693	if (orig_ob->nrof < nr)
1694	{
1695	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1696	return NULL;
1697	}
1698
1699	newob = object_create_clone (orig_ob);
1700
1701	if ((orig_ob->nrof -= nr) < 1)
1702	{
1703	if (!is_removed)
1704	remove_ob (orig_ob);
1705	free_object2 (orig_ob, 1);
1706	}
1707	else if (!is_removed)
1708	{
1709	if (orig_ob->env != NULL)
1710	sub_weight (orig_ob->env, orig_ob->weight * nr);
1711	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
1712	{
1713	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1714	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1715	return NULL;
1716	}
1717	}
1718
1719	newob->nrof = nr;
1720
1721	return newob;
1722	}	1589	}
1723		1590
		1591	// check whether we can put this into the map, respect max_volume, max_items
		1592	bool
		1593	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1594	{
		1595	mapspace &ms = m->at (x, y);
		1596
		1597	int items = ms.items ();
		1598
		1599	if (!items // testing !items ensures we can drop at least one item
		1600	|| (items < m->max_items
		1601	&& ms.volume () < m->max_volume))
		1602	return true;
		1603
		1604	if (originator && originator->is_player ())
		1605	originator->contr->failmsgf (
		1606	"No matter how hard you try, you just cannot put the %s here H<Try to remove some items from the floor first.>",
		1607	query_name ()
		1608	);
		1609
		1610	return false;
		1611	}
		1612
1724	/*	1613	/*
1725	* decrease_ob_nr(object, number) decreases a specified number from	1614	* decrease(object, number) decreases a specified number from
1726	* the amount of an object. If the amount reaches 0, the object	1615	* the amount of an object. If the amount reaches 0, the object
1727	* is subsequently removed and freed.	1616	* is subsequently removed and freed.
1728	*	1617	*
1729	* Return value: 'op' if something is left, NULL if the amount reached 0	1618	* Return value: 'op' if something is left, NULL if the amount reached 0
1730	*/	1619	*/
		1620	bool
		1621	object::decrease (sint32 nr)
		1622	{
		1623	if (!nr)
		1624	return true;
1731		1625
		1626	nr = min (nr, nrof);
		1627
		1628	if (nrof > nr)
		1629	{
		1630	sint64 oweight = total_weight ();
		1631
		1632	nrof -= nr;
		1633
		1634	if (object *pl = visible_to ())
		1635	esrv_update_item (UPD_NROF, pl, this);
		1636
		1637	adjust_weight (env, oweight, total_weight ());
		1638
		1639	return true;
		1640	}
		1641	else
		1642	{
		1643	destroy ();
		1644	return false;
		1645	}
		1646	}
		1647
		1648	/*
		1649	* split(ob,nr) splits up ob into two parts. The part which
		1650	* is returned contains nr objects, and the remaining parts contains
		1651	* the rest (or is removed and returned if that number is 0).
		1652	* On failure, NULL is returned.
		1653	*/
1732	object *	1654	object *
1733	decrease_ob_nr (object *op, uint32 i)	1655	object::split (sint32 nr)
1734	{	1656	{
1735	object *tmp;	1657	int have = number_of ();
1736	player *pl;
1737		1658
1738	if (i == 0) /* objects with op->nrof require this check */	1659	if (have < nr)
1739	return op;	1660	return 0;
1740		1661	else if (have == nr)
1741	if (i > op->nrof)
1742	i = op->nrof;
1743
1744	if (QUERY_FLAG (op, FLAG_REMOVED))
1745	op->nrof -= i;
1746	else if (op->env != NULL)
1747	{	1662	{
1748	/* is this object in the players inventory, or sub container
1749	* therein?
1750	*/
1751	tmp = is_player_inv (op->env);
1752	/* nope. Is this a container the player has opened?
1753	* If so, set tmp to that player.
1754	* IMO, searching through all the players will mostly
1755	* likely be quicker than following op->env to the map,
1756	* and then searching the map for a player.
1757	*/
1758	if (!tmp)
1759	{
1760	for (pl = first_player; pl; pl = pl->next)
1761	if (pl->ob->container == op->env)
1762	break;
1763	if (pl)
1764	tmp = pl->ob;
1765	else
1766	tmp = NULL;
1767	}
1768
1769	if (i < op->nrof)
1770	{
1771	sub_weight (op->env, op->weight * i);
1772	op->nrof -= i;
1773	if (tmp)
1774	{
1775	esrv_send_item (tmp, op);
1776	}
1777	}
1778	else
1779	{
1780	remove_ob (op);	1663	remove ();
1781	op->nrof = 0;	1664	return this;
1782	if (tmp)
1783	{
1784	esrv_del_item (tmp->contr, op->count);
1785	}
1786	}
1787	}	1665	}
1788	else	1666	else
1789	{	1667	{
1790	object *above = op->above;	1668	decrease (nr);
1791		1669
1792	if (i < op->nrof)	1670	object *op = deep_clone ();
1793	op->nrof -= i;	1671	op->nrof = nr;
1794	else
1795	{
1796	remove_ob (op);
1797	op->nrof = 0;
1798	}
1799
1800	/* Since we just removed op, op->above is null */
1801	for (tmp = above; tmp != NULL; tmp = tmp->above)
1802	if (tmp->type == PLAYER)
1803	{
1804	if (op->nrof)
1805	esrv_send_item (tmp, op);
1806	else
1807	esrv_del_item (tmp->contr, op->count);
1808	}
1809	}
1810
1811	if (op->nrof)
1812	return op;	1672	return op;
1813	else
1814	{	1673	}
1815	free_object (op);	1674	}
		1675
		1676	object *
		1677	insert_ob_in_ob (object *op, object *where)
		1678	{
		1679	if (!where)
		1680	{
		1681	char *dump = dump_object (op);
		1682	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1683	free (dump);
1816	return NULL;	1684	return op;
1817	}
1818	}
1819
1820	/*
1821	* add_weight(object, weight) adds the specified weight to an object,
1822	* and also updates how much the environment(s) is/are carrying.
1823	*/
1824
1825	void
1826	add_weight (object *op, signed long weight)
1827	{
1828	while (op != NULL)
1829	{	1685	}
1830	if (op->type == CONTAINER)
1831	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1832		1686
1833	op->carrying += weight;	1687	if (where->head_ () != where)
1834	op = op->env;
1835	}	1688	{
1836	}	1689	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1690	where = where->head;
		1691	}
1837		1692
		1693	return where->insert (op);
		1694	}
		1695
1838	/*	1696	/*
1839	* insert_ob_in_ob(op,environment):	1697	* env->insert (op)
1840	* This function inserts the object op in the linked list	1698	* This function inserts the object op in the linked list
1841	* inside the object environment.	1699	* inside the object environment.
1842	*	1700	*
1843	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1844	* the inventory at the last position or next to other objects of the same
1845	* type.
1846	* Frank: Now sorted by type, archetype and magic!
1847	*
1848	* The function returns now pointer to inserted item, and return value can	1701	* The function returns now pointer to inserted item, and return value can
1849	* be != op, if items are merged. -Tero	1702	* be != op, if items are merged. -Tero
1850	*/	1703	*/
1851
1852	object *	1704	object *
1853	insert_ob_in_ob (object *op, object *where)	1705	object::insert (object *op)
1854	{	1706	{
1855	object *
1856	tmp, *
1857	otmp;
1858
1859	if (!QUERY_FLAG (op, FLAG_REMOVED))
1860	{
1861	dump_object (op);
1862	LOG (llevError, "Trying to insert (ob) inserted object.\n%s\n", errmsg);
1863	return op;
1864	}
1865
1866	if (where == NULL)
1867	{
1868	dump_object (op);
1869	LOG (llevError, "Trying to put object in NULL.\n%s\n", errmsg);
1870	return op;
1871	}
1872
1873	if (where->head)
1874	{
1875	LOG (llevDebug, "Warning: Tried to insert object wrong part of multipart object.\n");
1876	where = where->head;
1877	}
1878
1879	if (op->more)	1707	if (op->more)
1880	{	1708	{
1881	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);	1709	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1882	return op;	1710	return op;
1883	}	1711	}
1884		1712
1885	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);	1713	op->remove ();
1886	CLEAR_FLAG (op, FLAG_REMOVED);	1714
		1715	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1716
1887	if (op->nrof)	1717	if (op->nrof)
1888	{
1889	for (tmp = where->inv; tmp != NULL; tmp = tmp->below)	1718	for (object *tmp = inv; tmp; tmp = tmp->below)
1890	if (CAN_MERGE (tmp, op))	1719	if (object::can_merge (tmp, op))
1891	{	1720	{
1892	/* return the original object and remove inserted object	1721	/* return the original object and remove inserted object
1893	(client needs the original object) */	1722	(client prefers the original object) */
		1723
		1724	// carring must be 0 for mergable objects
		1725	sint64 oweight = tmp->weight * tmp->nrof;
		1726
1894	tmp->nrof += op->nrof;	1727	tmp->nrof += op->nrof;
1895	/* Weight handling gets pretty funky. Since we are adding to	1728
1896	* tmp->nrof, we need to increase the weight.	1729	if (object *pl = tmp->visible_to ())
1897	*/	1730	esrv_update_item (UPD_NROF, pl, tmp);
		1731
1898	add_weight (where, op->weight * op->nrof);	1732	adjust_weight (this, oweight, tmp->weight * tmp->nrof);
1899	SET_FLAG (op, FLAG_REMOVED);	1733
1900	free_object (op); /* free the inserted object */	1734	op->destroy ();
1901	op = tmp;	1735	op = tmp;
1902	remove_ob (op); /* and fix old object's links */	1736	goto inserted;
1903	CLEAR_FLAG (op, FLAG_REMOVED);
1904	break;
1905	}	1737	}
1906		1738
1907	/* I assume combined objects have no inventory	1739	op->owner = 0; // it's his/hers now. period.
1908	* We add the weight - this object could have just been removed
1909	* (if it was possible to merge). calling remove_ob will subtract
1910	* the weight, so we need to add it in again, since we actually do
1911	* the linking below
1912	*/
1913	add_weight (where, op->weight * op->nrof);
1914	}
1915	else
1916	add_weight (where, (op->weight + op->carrying));
1917
1918	otmp = is_player_inv (where);
1919	if (otmp && otmp->contr != NULL)
1920	{
1921	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1922	fix_player (otmp);
1923	}
1924
1925	op->map = NULL;	1740	op->map = 0;
1926	op->env = where;	1741	op->x = 0;
		1742	op->y = 0;
		1743
1927	op->above = NULL;	1744	op->above = 0;
1928	op->below = NULL;	1745	op->below = inv;
1929	op->x = 0, op->y = 0;	1746	op->env = this;
1930		1747
		1748	if (inv)
		1749	inv->above = op;
		1750
		1751	inv = op;
		1752
		1753	op->flag [FLAG_REMOVED] = 0;
		1754
		1755	if (object *pl = op->visible_to ())
		1756	esrv_send_item (pl, op);
		1757
		1758	adjust_weight (this, 0, op->total_weight ());
		1759
		1760	inserted:
1931	/* reset the light list and los of the players on the map */	1761	/* reset the light list and los of the players on the map */
1932	if ((op->glow_radius != 0) && where->map)	1762	if (op->glow_radius && is_on_map ())
1933	{
1934	#ifdef DEBUG_LIGHTS
1935	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1936	#endif /* DEBUG_LIGHTS */
1937	if (MAP_DARKNESS (where->map))
1938	update_all_los (where->map, where->x, where->y);
1939	}	1763	{
1940		1764	update_stats ();
1941	/* Client has no idea of ordering so lets not bother ordering it here.	1765	update_all_los (map, x, y);
1942	* It sure simplifies this function...
1943	*/
1944	if (where->inv == NULL)
1945	where->inv = op;
1946	else
1947	{	1766	}
1948	op->below = where->inv;	1767	else if (is_player ())
1949	op->below->above = op;	1768	// if this is a player's inventory, update stats
1950	where->inv = op;	1769	contr->queue_stats_update ();
1951	}	1770
		1771	INVOKE_OBJECT (INSERT, this);
		1772
1952	return op;	1773	return op;
1953	}	1774	}
1954		1775
1955	/*	1776	/*
1956	* Checks if any objects has a move_type that matches objects	1777	* Checks if any objects has a move_type that matches objects
…		…
1970	*	1791	*
1971	* MSW 2001-07-08: Check all objects on space, not just those below	1792	* MSW 2001-07-08: Check all objects on space, not just those below
1972	* object being inserted. insert_ob_in_map may not put new objects	1793	* object being inserted. insert_ob_in_map may not put new objects
1973	* on top.	1794	* on top.
1974	*/	1795	*/
1975
1976	int	1796	int
1977	check_move_on (object *op, object *originator)	1797	check_move_on (object *op, object *originator, int flags)
1978	{	1798	{
1979	object *	1799	if (op->flag [FLAG_NO_APPLY])
1980	tmp;
1981	tag_t
1982	tag;
1983	mapstruct *
1984	m = op->map;
1985	int
1986	x = op->x, y = op->y;
1987
1988	MoveType
1989	move_on,
1990	move_slow,
1991	move_block;
1992
1993	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1994	return 0;	1800	return 0;
1995		1801
1996	tag = op->count;	1802	object *tmp;
		1803	maptile *m = op->map;
		1804	int x = op->x, y = op->y;
1997		1805
1998	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);	1806	mapspace &ms = m->at (x, y);
1999	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);	1807
2000	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);	1808	ms.update ();
		1809
		1810	MoveType move_on = ms.move_on;
		1811	MoveType move_slow = ms.move_slow;
		1812	MoveType move_block = ms.move_block;
2001		1813
2002	/* if nothing on this space will slow op down or be applied,	1814	/* if nothing on this space will slow op down or be applied,
2003	* no need to do checking below. have to make sure move_type	1815	* no need to do checking below. have to make sure move_type
2004	* is set, as lots of objects don't have it set - we treat that	1816	* is set, as lots of objects don't have it set - we treat that
2005	* as walking.	1817	* as walking.
…		…
2016	return 0;	1828	return 0;
2017		1829
2018	/* The objects have to be checked from top to bottom.	1830	/* The objects have to be checked from top to bottom.
2019	* Hence, we first go to the top:	1831	* Hence, we first go to the top:
2020	*/	1832	*/
2021		1833	for (object *next, *tmp = ms.top; tmp; tmp = next)
2022	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL && tmp->above != NULL; tmp = tmp->above)
2023	{
2024	/* Trim the search when we find the first other spell effect
2025	* this helps performance so that if a space has 50 spell objects,
2026	* we don't need to check all of them.
2027	*/
2028	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
2029	break;
2030	}	1834	{
		1835	next = tmp->below;
2031		1836
2032	for (; tmp; tmp = tmp->below)
2033	{
2034	if (tmp == op)	1837	if (tmp == op)
2035	continue; /* Can't apply yourself */	1838	continue; /* Can't apply yourself */
2036		1839
2037	/* Check to see if one of the movement types should be slowed down.	1840	/* Check to see if one of the movement types should be slowed down.
2038	* Second check makes sure that the movement types not being slowed	1841	* Second check makes sure that the movement types not being slowed
2039	* (~slow_move) is not blocked on this space - just because the	1842	* (~slow_move) is not blocked on this space - just because the
2040	* space doesn't slow down swimming (for example), if you can't actually	1843	* space doesn't slow down swimming (for example), if you can't actually
2041	* swim on that space, can't use it to avoid the penalty.	1844	* swim on that space, can't use it to avoid the penalty.
2042	*/	1845	*/
2043	if (!QUERY_FLAG (op, FLAG_WIZPASS))	1846	if (!op->flag [FLAG_WIZPASS])
2044	{	1847	{
2045	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1848	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
2046	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))	1849	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
2047	{	1850	{
2048
2049	float
2050	diff = tmp->move_slow_penalty * FABS (op->speed);	1851	float diff = tmp->move_slow_penalty * fabs (op->speed);
2051		1852
2052	if (op->type == PLAYER)	1853	if (op->is_player ())
2053	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||	1854	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
2054	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))	1855	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
2055	diff /= 4.0;	1856	diff /= 4.0;
2056		1857
2057	op->speed_left -= diff;	1858	op->speed_left -= diff;
2058	}	1859	}
2059	}	1860	}
2060		1861
2061	/* Basically same logic as above, except now for actual apply. */	1862	/* Basically same logic as above, except now for actual apply. */
2062	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1863	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
2063	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))	1864	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
2064	{	1865	{
		1866	if ((flags & INS_NO_AUTO_EXIT)
		1867	&& (tmp->type == EXIT || tmp->type == TELEPORTER
		1868	|| tmp->type == HOLE || tmp->type == TRAPDOOR)) //TODO: temporary, fix exits instead
		1869	continue;
		1870
2065	move_apply (tmp, op, originator);	1871	move_apply (tmp, op, originator);
2066		1872
2067	if (was_destroyed (op, tag))	1873	if (op->destroyed ())
2068	return 1;	1874	return 1;
2069		1875
2070	/* what the person/creature stepped onto has moved the object	1876	/* what the person/creature stepped onto has moved the object
2071	* someplace new. Don't process any further - if we did,	1877	* someplace new. Don't process any further - if we did,
2072	* have a feeling strange problems would result.	1878	* have a feeling strange problems would result.
…		…
2082	/*	1888	/*
2083	* present_arch(arch, map, x, y) searches for any objects with	1889	* present_arch(arch, map, x, y) searches for any objects with
2084	* a matching archetype at the given map and coordinates.	1890	* a matching archetype at the given map and coordinates.
2085	* The first matching object is returned, or NULL if none.	1891	* The first matching object is returned, or NULL if none.
2086	*/	1892	*/
2087
2088	object *	1893	object *
2089	present_arch (const archetype *at, mapstruct *m, int x, int y)	1894	present_arch (const archetype *at, maptile *m, int x, int y)
2090	{	1895	{
2091	object *
2092	tmp;
2093
2094	if (m == NULL || out_of_map (m, x, y))	1896	if (!m || out_of_map (m, x, y))
2095	{	1897	{
2096	LOG (llevError, "Present_arch called outside map.\n");	1898	LOG (llevError, "Present_arch called outside map.\n");
2097	return NULL;	1899	return NULL;
2098	}	1900	}
2099	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)	1901
2100	if (tmp->arch == at)	1902	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1903	if (tmp->arch->archname == at->archname)
2101	return tmp;	1904	return tmp;
		1905
2102	return NULL;	1906	return NULL;
2103	}	1907	}
2104		1908
2105	/*	1909	/*
2106	* present(type, map, x, y) searches for any objects with	1910	* present(type, map, x, y) searches for any objects with
2107	* a matching type variable at the given map and coordinates.	1911	* a matching type variable at the given map and coordinates.
2108	* The first matching object is returned, or NULL if none.	1912	* The first matching object is returned, or NULL if none.
2109	*/	1913	*/
2110
2111	object *	1914	object *
2112	present (unsigned char type, mapstruct *m, int x, int y)	1915	present (unsigned char type, maptile *m, int x, int y)
2113	{	1916	{
2114	object *
2115	tmp;
2116
2117	if (out_of_map (m, x, y))	1917	if (out_of_map (m, x, y))
2118	{	1918	{
2119	LOG (llevError, "Present called outside map.\n");	1919	LOG (llevError, "Present called outside map.\n");
2120	return NULL;	1920	return NULL;
2121	}	1921	}
2122	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)	1922
		1923	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
2123	if (tmp->type == type)	1924	if (tmp->type == type)
2124	return tmp;	1925	return tmp;
		1926
2125	return NULL;	1927	return NULL;
2126	}	1928	}
2127		1929
2128	/*	1930	/*
2129	* present_in_ob(type, object) searches for any objects with	1931	* present_in_ob(type, object) searches for any objects with
2130	* a matching type variable in the inventory of the given object.	1932	* a matching type variable in the inventory of the given object.
2131	* The first matching object is returned, or NULL if none.	1933	* The first matching object is returned, or NULL if none.
2132	*/	1934	*/
2133
2134	object *	1935	object *
2135	present_in_ob (unsigned char type, const object *op)	1936	present_in_ob (unsigned char type, const object *op)
2136	{	1937	{
2137	object *
2138	tmp;
2139
2140	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1938	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2141	if (tmp->type == type)	1939	if (tmp->type == type)
2142	return tmp;	1940	return tmp;
		1941
2143	return NULL;	1942	return NULL;
2144	}	1943	}
2145		1944
2146	/*	1945	/*
2147	* present_in_ob (type, str, object) searches for any objects with	1946	* present_in_ob (type, str, object) searches for any objects with
…		…
2155	* str is the string to match against. Note that we match against	1954	* str is the string to match against. Note that we match against
2156	* the object name, not the archetype name. this is so that the	1955	* the object name, not the archetype name. this is so that the
2157	* spell code can use one object type (force), but change it's name	1956	* spell code can use one object type (force), but change it's name
2158	* to be unique.	1957	* to be unique.
2159	*/	1958	*/
2160
2161	object *	1959	object *
2162	present_in_ob_by_name (int type, const char *str, const object *op)	1960	present_in_ob_by_name (int type, const char *str, const object *op)
2163	{	1961	{
2164	object *
2165	tmp;
2166
2167	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1962	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2168	{
2169	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))	1963	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2170	return tmp;	1964	return tmp;
2171	}	1965
2172	return NULL;	1966	return 0;
2173	}	1967	}
2174		1968
2175	/*	1969	/*
2176	* present_arch_in_ob(archetype, object) searches for any objects with	1970	* present_arch_in_ob(archetype, object) searches for any objects with
2177	* a matching archetype in the inventory of the given object.	1971	* a matching archetype in the inventory of the given object.
2178	* The first matching object is returned, or NULL if none.	1972	* The first matching object is returned, or NULL if none.
2179	*/	1973	*/
2180
2181	object *	1974	object *
2182	present_arch_in_ob (const archetype *at, const object *op)	1975	present_arch_in_ob (const archetype *at, const object *op)
2183	{	1976	{
2184	object *
2185	tmp;
2186
2187	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1977	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2188	if (tmp->arch == at)	1978	if (tmp->arch->archname == at->archname)
2189	return tmp;	1979	return tmp;
		1980
2190	return NULL;	1981	return NULL;
2191	}	1982	}
2192		1983
2193	/*	1984	/*
2194	* activate recursively a flag on an object inventory	1985	* activate recursively a flag on an object inventory
2195	*/	1986	*/
2196	void	1987	void
2197	flag_inv (object *op, int flag)	1988	flag_inv (object *op, int flag)
2198	{	1989	{
2199	object *
2200	tmp;
2201
2202	if (op->inv)
2203	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	1990	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2204	{	1991	{
2205	SET_FLAG (tmp, flag);	1992	tmp->set_flag (flag);
2206	flag_inv (tmp, flag);	1993	flag_inv (tmp, flag);
2207	}	1994	}
2208	} /*	1995	}
		1996
		1997	/*
2209	* desactivate recursively a flag on an object inventory	1998	* deactivate recursively a flag on an object inventory
2210	*/	1999	*/
2211	void	2000	void
2212	unflag_inv (object *op, int flag)	2001	unflag_inv (object *op, int flag)
2213	{	2002	{
2214	object *
2215	tmp;
2216
2217	if (op->inv)
2218	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)	2003	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2219	{	2004	{
2220	CLEAR_FLAG (tmp, flag);	2005	tmp->clr_flag (flag);
2221	unflag_inv (tmp, flag);	2006	unflag_inv (tmp, flag);
2222	}	2007	}
2223	}
2224
2225	/*
2226	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2227	* all it's inventory (recursively).
2228	* If checksums are used, a player will get set_cheat called for
2229	* him/her-self and all object carried by a call to this function.
2230	*/
2231
2232	void
2233	set_cheat (object *op)
2234	{
2235	SET_FLAG (op, FLAG_WAS_WIZ);
2236	flag_inv (op, FLAG_WAS_WIZ);
2237	}	2008	}
2238		2009
2239	/*	2010	/*
2240	* find_free_spot(object, map, x, y, start, stop) will search for	2011	* find_free_spot(object, map, x, y, start, stop) will search for
2241	* a spot at the given map and coordinates which will be able to contain	2012	* a spot at the given map and coordinates which will be able to contain
…		…
2243	* to search (see the freearr_x/y[] definition).	2014	* to search (see the freearr_x/y[] definition).
2244	* It returns a random choice among the alternatives found.	2015	* It returns a random choice among the alternatives found.
2245	* start and stop are where to start relative to the free_arr array (1,9	2016	* start and stop are where to start relative to the free_arr array (1,9
2246	* does all 4 immediate directions). This returns the index into the	2017	* does all 4 immediate directions). This returns the index into the
2247	* array of the free spot, -1 if no spot available (dir 0 = x,y)	2018	* array of the free spot, -1 if no spot available (dir 0 = x,y)
2248	* Note - this only checks to see if there is space for the head of the
2249	* object - if it is a multispace object, this should be called for all
2250	* pieces.
2251	* Note2: This function does correctly handle tiled maps, but does not	2019	* Note: This function does correctly handle tiled maps, but does not
2252	* inform the caller. However, insert_ob_in_map will update as	2020	* inform the caller. However, insert_ob_in_map will update as
2253	* necessary, so the caller shouldn't need to do any special work.	2021	* necessary, so the caller shouldn't need to do any special work.
2254	* Note - updated to take an object instead of archetype - this is necessary	2022	* Note - updated to take an object instead of archetype - this is necessary
2255	* because arch_blocked (now ob_blocked) needs to know the movement type	2023	* because arch_blocked (now ob_blocked) needs to know the movement type
2256	* to know if the space in question will block the object. We can't use	2024	* to know if the space in question will block the object. We can't use
2257	* the archetype because that isn't correct if the monster has been	2025	* the archetype because that isn't correct if the monster has been
2258	* customized, changed states, etc.	2026	* customized, changed states, etc.
2259	*/	2027	*/
2260
2261	int	2028	int
2262	find_free_spot (const object *ob, mapstruct *m, int x, int y, int start, int stop)	2029	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
2263	{	2030	{
2264	int
2265	i,
2266	index = 0, flag;
2267	static int
2268	altern[SIZEOFFREE];	2031	int altern[SIZEOFFREE];
		2032	int index = 0, flag;
2269		2033
2270	for (i = start; i < stop; i++)	2034	for (int i = start; i < stop; i++)
2271	{	2035	{
2272	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);	2036	mapxy pos (m, x, y); pos.move (i);
2273	if (!flag)	2037
		2038	if (!pos.normalise ())
		2039	continue;
		2040
		2041	mapspace &ms = *pos;
		2042
		2043	if (ms.flags () & P_IS_ALIVE)
		2044	continue;
		2045
		2046	/* However, often
		2047	* ob doesn't have any move type (when used to place exits)
		2048	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2049	*/
		2050	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2051	{
2274	altern[index++] = i;	2052	altern [index++] = i;
		2053	continue;
		2054	}
2275		2055
2276	/* Basically, if we find a wall on a space, we cut down the search size.	2056	/* Basically, if we find a wall on a space, we cut down the search size.
2277	* In this way, we won't return spaces that are on another side of a wall.	2057	* In this way, we won't return spaces that are on another side of a wall.
2278	* This mostly work, but it cuts down the search size in all directions -	2058	* This mostly work, but it cuts down the search size in all directions -
2279	* if the space being examined only has a wall to the north and empty	2059	* if the space being examined only has a wall to the north and empty
2280	* spaces in all the other directions, this will reduce the search space	2060	* spaces in all the other directions, this will reduce the search space
2281	* to only the spaces immediately surrounding the target area, and	2061	* to only the spaces immediately surrounding the target area, and
2282	* won't look 2 spaces south of the target space.	2062	* won't look 2 spaces south of the target space.
2283	*/	2063	*/
2284	else if ((flag & AB_NO_PASS) && maxfree[i] < stop)	2064	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2065	{
2285	stop = maxfree[i];	2066	stop = maxfree[i];
		2067	continue;
		2068	}
		2069
		2070	/* Note it is intentional that we check ob - the movement type of the
		2071	* head of the object should correspond for the entire object.
		2072	*/
		2073	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2074	continue;
		2075
		2076	if (ob->blocked (pos.m, pos.x, pos.y))
		2077	continue;
		2078
		2079	altern [index++] = i;
2286	}	2080	}
		2081
2287	if (!index)	2082	if (!index)
2288	return -1;	2083	return -1;
		2084
2289	return altern[RANDOM () % index];	2085	return altern [rndm (index)];
2290	}	2086	}
2291		2087
2292	/*	2088	/*
2293	* find_first_free_spot(archetype, mapstruct, x, y) works like	2089	* find_first_free_spot(archetype, maptile, x, y) works like
2294	* find_free_spot(), but it will search max number of squares.	2090	* find_free_spot(), but it will search max number of squares.
2295	* But it will return the first available spot, not a random choice.	2091	* But it will return the first available spot, not a random choice.
2296	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2092	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2297	*/	2093	*/
2298
2299	int	2094	int
2300	find_first_free_spot (const object *ob, mapstruct *m, int x, int y)	2095	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2301	{	2096	{
2302	int
2303	i;
2304
2305	for (i = 0; i < SIZEOFFREE; i++)	2097	for (int i = 0; i < SIZEOFFREE; i++)
2306	{
2307	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))	2098	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2308	return i;	2099	return i;
2309	}	2100
2310	return -1;	2101	return -1;
2311	}	2102	}
2312		2103
2313	/*	2104	/*
2314	* The function permute(arr, begin, end) randomly reorders the array	2105	* The function permute(arr, begin, end) randomly reorders the array
2315	* arr[begin..end-1].	2106	* arr[begin..end-1].
		2107	* now uses a fisher-yates shuffle, old permute was broken
2316	*/	2108	*/
2317	static void	2109	static void
2318	permute (int *arr, int begin, int end)	2110	permute (int *arr, int begin, int end)
2319	{	2111	{
2320	int	2112	arr += begin;
2321	i,
2322	j,
2323	tmp,
2324	len;
2325
2326	len = end - begin;	2113	end -= begin;
2327	for (i = begin; i < end; i++)
2328	{
2329	j = begin + RANDOM () % len;
2330		2114
2331	tmp = arr[i];	2115	while (--end)
2332	arr[i] = arr[j];	2116	swap (arr [end], arr [rndm (end + 1)]);
2333	arr[j] = tmp;
2334	}
2335	}	2117	}
2336		2118
2337	/* new function to make monster searching more efficient, and effective!	2119	/* new function to make monster searching more efficient, and effective!
2338	* This basically returns a randomized array (in the passed pointer) of	2120	* This basically returns a randomized array (in the passed pointer) of
2339	* the spaces to find monsters. In this way, it won't always look for	2121	* the spaces to find monsters. In this way, it won't always look for
…		…
2342	* the 3x3 area will be searched, just not in a predictable order.	2124	* the 3x3 area will be searched, just not in a predictable order.
2343	*/	2125	*/
2344	void	2126	void
2345	get_search_arr (int *search_arr)	2127	get_search_arr (int *search_arr)
2346	{	2128	{
2347	int	2129	int i;
2348	i;
2349		2130
2350	for (i = 0; i < SIZEOFFREE; i++)	2131	for (i = 0; i < SIZEOFFREE; i++)
2351	{
2352	search_arr[i] = i;	2132	search_arr[i] = i;
2353	}
2354		2133
2355	permute (search_arr, 1, SIZEOFFREE1 + 1);	2134	permute (search_arr, 1, SIZEOFFREE1 + 1);
2356	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);	2135	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2357	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);	2136	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2358	}	2137	}
…		…
2367	* Perhaps incorrectly, but I'm making the assumption that exclude	2146	* Perhaps incorrectly, but I'm making the assumption that exclude
2368	* is actually want is going to try and move there. We need this info	2147	* is actually want is going to try and move there. We need this info
2369	* because we have to know what movement the thing looking to move	2148	* because we have to know what movement the thing looking to move
2370	* there is capable of.	2149	* there is capable of.
2371	*/	2150	*/
2372
2373	int	2151	int
2374	find_dir (mapstruct *m, int x, int y, object *exclude)	2152	find_dir (maptile *m, int x, int y, object *exclude)
2375	{	2153	{
2376	int
2377	i,
2378	max = SIZEOFFREE, mflags;	2154	int max = SIZEOFFREE, mflags;
2379
2380	sint16 nx, ny;
2381	object *
2382	tmp;
2383	mapstruct *
2384	mp;
2385
2386	MoveType blocked, move_type;	2155	MoveType move_type;
2387		2156
2388	if (exclude && exclude->head)	2157	if (exclude && exclude->head_ () != exclude)
2389	{	2158	{
2390	exclude = exclude->head;	2159	exclude = exclude->head;
2391	move_type = exclude->move_type;	2160	move_type = exclude->move_type;
2392	}	2161	}
2393	else	2162	else
2394	{	2163	{
2395	/* If we don't have anything, presume it can use all movement types. */	2164	/* If we don't have anything, presume it can use all movement types. */
2396	move_type = MOVE_ALL;	2165	move_type = MOVE_ALL;
2397	}	2166	}
2398		2167
2399	for (i = 1; i < max; i++)	2168	for (int i = 1; i < max; i++)
2400	{	2169	{
2401	mp = m;	2170	mapxy pos (m, x, y);
2402	nx = x + freearr_x[i];	2171	pos.move (i);
2403	ny = y + freearr_y[i];
2404		2172
2405	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);	2173	if (!pos.normalise ())
2406	if (mflags & P_OUT_OF_MAP)
2407	{
2408	max = maxfree[i];	2174	max = maxfree[i];
2409	}
2410	else	2175	else
2411	{	2176	{
2412	blocked = GET_MAP_MOVE_BLOCK (mp, nx, ny);	2177	mapspace &ms = *pos;
2413		2178
2414	if ((move_type & blocked) == move_type)	2179	if ((move_type & ms.move_block) == move_type)
		2180	max = maxfree [i];
		2181	else if (ms.flags () & P_IS_ALIVE)
2415	{	2182	{
2416	max = maxfree[i];	2183	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
2417	}	2184	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2418	else if (mflags & P_IS_ALIVE)	2185	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2419	{
2420	for (tmp = GET_MAP_OB (mp, nx, ny); tmp != NULL; tmp = tmp->above)
2421	{
2422	if ((QUERY_FLAG (tmp, FLAG_MONSTER) || tmp->type == PLAYER) && (tmp != exclude || (tmp->head && tmp->head != exclude)))
2423	{
2424	break;
2425	}
2426	}
2427	if (tmp)
2428	{
2429	return freedir[i];	2186	return freedir [i];
2430	}
2431	}	2187	}
2432	}	2188	}
2433	}	2189	}
		2190
2434	return 0;	2191	return 0;
2435	}	2192	}
2436		2193
2437	/*	2194	/*
2438	* distance(object 1, object 2) will return the square of the	2195	* distance(object 1, object 2) will return the square of the
2439	* distance between the two given objects.	2196	* distance between the two given objects.
2440	*/	2197	*/
2441
2442	int	2198	int
2443	distance (const object *ob1, const object *ob2)	2199	distance (const object *ob1, const object *ob2)
2444	{	2200	{
2445	int
2446	i;
2447
2448	i = (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);	2201	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2449	return i;
2450	}	2202	}
2451		2203
2452	/*	2204	/*
2453	* find_dir_2(delta-x,delta-y) will return a direction in which	2205	* find_dir_2(delta-x,delta-y) will return a direction value
2454	* an object which has subtracted the x and y coordinates of another	2206	* for running into direct [dx, dy].
2455	* object, needs to travel toward it.	2207	* (the opposite of crossfire's find_dir_2!)
2456	*/	2208	*/
2457
2458	int	2209	int
2459	find_dir_2 (int x, int y)	2210	find_dir_2 (int x, int y)
2460	{	2211	{
		2212	#if 1 // new algorithm
		2213	// this works by putting x, y into 16 sectors, which
		2214	// are not equal sized, but are a better approximation
		2215	// then the old algorithm, and then using a mapping
		2216	// table to map it into a direction value.
		2217	// basically, it maps these comparisons to each bit
		2218	// bit #3: x < 0
		2219	// bit #2: y < 0
		2220	// bit #1: x > y
		2221	// bit #0: x > 2y
		2222
		2223	static const uint8 dir[16] = {
		2224	4, 5, 4, 3,
		2225	2, 1, 2, 3,
		2226	6, 5, 6, 7,
		2227	8, 1, 8, 7,
		2228	};
		2229	int sector = 0;
		2230
		2231	// this is a bit ugly, but more likely to result in branchless code
		2232	sector |= x < 0 ? 8 : 0;
		2233	x = x < 0 ? -x : x; // abs
		2234
		2235	sector |= y < 0 ? 4 : 0;
		2236	y = y < 0 ? -y : y; // abs
		2237
		2238	if (x > y)
		2239	{
		2240	sector |= 2;
		2241
		2242	if (x > y * 2)
		2243	sector |= 1;
		2244	}
		2245	else
		2246	{
		2247	if (y > x * 2)
		2248	sector |= 1;
		2249	else if (!y)
		2250	return 0; // x == 0 here
		2251	}
		2252
		2253	return dir [sector];
		2254	#else // old algorithm
2461	int	2255	int q;
2462	q;
2463		2256
2464	if (y)	2257	if (y)
2465	q = x * 100 / y;	2258	q = 128 * x / y;
2466	else if (x)	2259	else if (x)
2467	q = -300 * x;	2260	q = -512 * x; // to make it > 309
2468	else	2261	else
2469	return 0;	2262	return 0;
2470		2263
2471	if (y > 0)	2264	if (y > 0)
2472	{	2265	{
2473	if (q < -242)	2266	if (q < -309) return 7;
		2267	if (q < -52) return 6;
		2268	if (q < 52) return 5;
		2269	if (q < 309) return 4;
		2270
2474	return 3;	2271	return 3;
2475	if (q < -41)	2272	}
2476	return 2;	2273	else
2477	if (q < 41)	2274	{
2478	return 1;	2275	if (q < -309) return 3;
2479	if (q < 242)	2276	if (q < -52) return 2;
2480	return 8;	2277	if (q < 52) return 1;
		2278	if (q < 309) return 8;
		2279
2481	return 7;	2280	return 7;
2482	}	2281	}
2483		2282	#endif
2484	if (q < -242)
2485	return 7;
2486	if (q < -41)
2487	return 6;
2488	if (q < 41)
2489	return 5;
2490	if (q < 242)
2491	return 4;
2492
2493	return 3;
2494	}
2495
2496	/*
2497	* absdir(int): Returns a number between 1 and 8, which represent
2498	* the "absolute" direction of a number (it actually takes care of
2499	* "overflow" in previous calculations of a direction).
2500	*/
2501
2502	int
2503	absdir (int d)
2504	{
2505	while (d < 1)
2506	d += 8;
2507	while (d > 8)
2508	d -= 8;
2509	return d;
2510	}	2283	}
2511		2284
2512	/*	2285	/*
2513	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2286	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2514	* between two directions (which are expected to be absolute (see absdir())	2287	* between two directions (which are expected to be absolute (see absdir())
2515	*/	2288	*/
2516
2517	int	2289	int
2518	dirdiff (int dir1, int dir2)	2290	dirdiff (int dir1, int dir2)
2519	{	2291	{
2520	int
2521	d;
2522
2523	d = abs (dir1 - dir2);	2292	int d = abs (dir1 - dir2);
2524	if (d > 4)	2293
2525	d = 8 - d;	2294	return d > 4 ? 8 - d : d;
2526	return d;
2527	}	2295	}
2528		2296
2529	/* peterm:	2297	/* peterm:
2530	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2298	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
2531	* Basically, this is a table of directions, and what directions	2299	* Basically, this is a table of directions, and what directions
…		…
2533	* This basically means that if direction is 15, then it could either go	2301	* This basically means that if direction is 15, then it could either go
2534	* direction 4, 14, or 16 to get back to where we are.	2302	* direction 4, 14, or 16 to get back to where we are.
2535	* Moved from spell_util.c to object.c with the other related direction	2303	* Moved from spell_util.c to object.c with the other related direction
2536	* functions.	2304	* functions.
2537	*/	2305	*/
2538
2539	int
2540	reduction_dir[SIZEOFFREE][3] = {	2306	static const int reduction_dir[SIZEOFFREE][3] = {
2541	{0, 0, 0}, /* 0 */	2307	{0, 0, 0}, /* 0 */
2542	{0, 0, 0}, /* 1 */	2308	{0, 0, 0}, /* 1 */
2543	{0, 0, 0}, /* 2 */	2309	{0, 0, 0}, /* 2 */
2544	{0, 0, 0}, /* 3 */	2310	{0, 0, 0}, /* 3 */
2545	{0, 0, 0}, /* 4 */	2311	{0, 0, 0}, /* 4 */
…		…
2593	* find a path to that monster that we found. If not,	2359	* find a path to that monster that we found. If not,
2594	* we don't bother going toward it. Returns 1 if we	2360	* we don't bother going toward it. Returns 1 if we
2595	* can see a direct way to get it	2361	* can see a direct way to get it
2596	* Modified to be map tile aware -.MSW	2362	* Modified to be map tile aware -.MSW
2597	*/	2363	*/
2598
2599
2600	int	2364	int
2601	can_see_monsterP (mapstruct *m, int x, int y, int dir)	2365	can_see_monsterP (maptile *m, int x, int y, int dir)
2602	{	2366	{
2603	sint16 dx, dy;	2367	sint16 dx, dy;
2604	int
2605	mflags;	2368	int mflags;
2606		2369
2607	if (dir < 0)	2370	if (dir < 0)
2608	return 0; /* exit condition: invalid direction */	2371	return 0; /* exit condition: invalid direction */
2609		2372
2610	dx = x + freearr_x[dir];	2373	dx = x + freearr_x[dir];
…		…
2623	return 0;	2386	return 0;
2624		2387
2625	/* yes, can see. */	2388	/* yes, can see. */
2626	if (dir < 9)	2389	if (dir < 9)
2627	return 1;	2390	return 1;
		2391
2628	return can_see_monsterP (m, x, y, reduction_dir[dir][0]) |	2392	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2629	can_see_monsterP (m, x, y, reduction_dir[dir][1]) | can_see_monsterP (m, x, y, reduction_dir[dir][2]);	2393	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
		2394	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2630	}	2395	}
2631
2632
2633		2396
2634	/*	2397	/*
2635	* can_pick(picker, item): finds out if an object is possible to be	2398	* can_pick(picker, item): finds out if an object is possible to be
2636	* picked up by the picker. Returnes 1 if it can be	2399	* picked up by the picker. Returnes 1 if it can be
2637	* picked up, otherwise 0.	2400	* picked up, otherwise 0.
…		…
2639	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2402	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2640	* core dumps if they do.	2403	* core dumps if they do.
2641	*	2404	*
2642	* Add a check so we can't pick up invisible objects (0.93.8)	2405	* Add a check so we can't pick up invisible objects (0.93.8)
2643	*/	2406	*/
2644
2645	int	2407	int
2646	can_pick (const object *who, const object *item)	2408	can_pick (const object *who, const object *item)
2647	{	2409	{
2648	return /*QUERY_FLAG(who,FLAG_WIZ)|| */	2410	return /*who->flag [FLAG_WIZ]|| */
2649	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&	2411	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2650	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));	2412	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2651	}	2413	}
2652
2653		2414
2654	/*	2415	/*
2655	* create clone from object to another	2416	* create clone from object to another
2656	*/	2417	*/
2657	object *	2418	object *
2658	object_create_clone (object *asrc)	2419	object::deep_clone ()
2659	{	2420	{
2660	object *	2421	assert (("deep_clone called on non-head object", is_head ()));
2661	dst = NULL, *tmp, *src, *part, *prev, *item;
2662		2422
2663	if (!asrc)	2423	object *dst = clone ();
2664	return NULL;
2665	src = asrc;
2666	if (src->head)
2667	src = src->head;
2668		2424
2669	prev = NULL;	2425	object *prev = dst;
2670	for (part = src; part; part = part->more)	2426	for (object *part = this->more; part; part = part->more)
2671	{	2427	{
2672	tmp = get_object ();	2428	object *tmp = part->clone ();
2673	copy_object (part, tmp);
2674	tmp->x -= src->x;
2675	tmp->y -= src->y;
2676	if (!part->head)
2677	{
2678	dst = tmp;
2679	tmp->head = NULL;
2680	}
2681	else
2682	{
2683	tmp->head = dst;	2429	tmp->head = dst;
2684	}
2685	tmp->more = NULL;
2686	if (prev)
2687	prev->more = tmp;	2430	prev->more = tmp;
2688	prev = tmp;	2431	prev = tmp;
2689	}	2432	}
2690		2433
2691	/*** copy inventory ***/
2692	for (item = src->inv; item; item = item->below)	2434	for (object *item = inv; item; item = item->below)
2693	{	2435	insert_ob_in_ob (item->deep_clone (), dst);
2694	(void) insert_ob_in_ob (object_create_clone (item), dst);
2695	}
2696		2436
2697	return dst;	2437	return dst;
2698	}
2699
2700	/* return true if the object was destroyed, 0 otherwise */
2701	int
2702	was_destroyed (const object *op, tag_t old_tag)
2703	{
2704	/* checking for FLAG_FREED isn't necessary, but makes this function more
2705	* robust */
2706	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2707	}
2708
2709	/* GROS - Creates an object using a string representing its content. */
2710
2711	/* Basically, we save the content of the string to a temp file, then call */
2712
2713	/* load_object on it. I admit it is a highly inefficient way to make things, */
2714
2715	/* but it was simple to make and allows reusing the load_object function. */
2716
2717	/* Remember not to use load_object_str in a time-critical situation. */
2718
2719	/* Also remember that multiparts objects are not supported for now. */
2720
2721	object *
2722	load_object_str (const char *obstr)
2723	{
2724	object *
2725	op;
2726	char
2727	filename[MAX_BUF];
2728
2729	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2730
2731	FILE *
2732	tempfile = fopen (filename, "w");
2733
2734	if (tempfile == NULL)
2735	{
2736	LOG (llevError, "Error - Unable to access load object temp file\n");
2737	return NULL;
2738	}
2739
2740	fprintf (tempfile, obstr);
2741	fclose (tempfile);
2742
2743	op = get_object ();
2744
2745	object_thawer thawer (filename);
2746
2747	if (thawer)
2748	load_object (thawer, op, 0);
2749
2750	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2751	CLEAR_FLAG (op, FLAG_REMOVED);
2752
2753	return op;
2754	}	2438	}
2755		2439
2756	/* This returns the first object in who's inventory that	2440	/* This returns the first object in who's inventory that
2757	* has the same type and subtype match.	2441	* has the same type and subtype match.
2758	* returns NULL if no match.	2442	* returns NULL if no match.
2759	*/	2443	*/
2760	object *	2444	object *
2761	find_obj_by_type_subtype (const object *who, int type, int subtype)	2445	find_obj_by_type_subtype (const object *who, int type, int subtype)
2762	{	2446	{
2763	object *
2764	tmp;
2765
2766	for (tmp = who->inv; tmp; tmp = tmp->below)	2447	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2767	if (tmp->type == type && tmp->subtype == subtype)	2448	if (tmp->type == type && tmp->subtype == subtype)
2768	return tmp;	2449	return tmp;
2769		2450
2770	return NULL;
2771	}
2772
2773	/* If ob has a field named key, return the link from the list,
2774	* otherwise return NULL.
2775	*
2776	* key must be a passed in shared string - otherwise, this won't
2777	* do the desired thing.
2778	*/
2779	key_value *
2780	get_ob_key_link (const object *ob, const char *key)
2781	{
2782	key_value *
2783	link;
2784
2785	for (link = ob->key_values; link != NULL; link = link->next)
2786	{
2787	if (link->key == key)
2788	{
2789	return link;
2790	}
2791	}
2792
2793	return NULL;
2794	}
2795
2796	/*
2797	* Returns the value of op has an extra_field for key, or NULL.
2798	*
2799	* The argument doesn't need to be a shared string.
2800	*
2801	* The returned string is shared.
2802	*/
2803	const char *
2804	get_ob_key_value (const object *op, const char *const key)
2805	{
2806	key_value *link;
2807	shstr_cmp canonical_key (key);
2808
2809	if (!canonical_key)
2810	{
2811	/* 1. There being a field named key on any object
2812	* implies there'd be a shared string to find.
2813	* 2. Since there isn't, no object has this field.
2814	* 3. Therefore, *this* object doesn't have this field.
2815	*/
2816	return 0;
2817	}
2818
2819	/* This is copied from get_ob_key_link() above -
2820	* only 4 lines, and saves the function call overhead.
2821	*/
2822	for (link = op->key_values; link; link = link->next)
2823	if (link->key == canonical_key)
2824	return link->value;
2825
2826	return 0;	2451	return 0;
2827	}	2452	}
2828		2453
2829		2454	/* Zero the key_values on op, decrementing the shared-string
2830	/*	2455	* refcounts and freeing the links.
2831	* Updates the canonical_key in op to value.
2832	*	2456	*/
2833	* canonical_key is a shared string (value doesn't have to be).	2457	void
2834	*	2458	key_values::clear ()
2835	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2836	* keys.
2837	*
2838	* Returns TRUE on success.
2839	*/
2840	int
2841	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
2842	{	2459	{
2843	key_value *	2460	for (key_value *kvp = first; kvp; )
2844	field = NULL, *last = NULL;	2461	{
2845		2462	key_value *next = kvp->next;
2846	for (field = op->key_values; field != NULL; field = field->next)	2463	delete kvp;
		2464	kvp = next;
2847	{	2465	}
2848	if (field->key != canonical_key)	2466
		2467	first = 0;
		2468	}
		2469
		2470	shstr_tmp
		2471	key_values::get (shstr_tmp key) const
		2472	{
		2473	for (key_value *kv = first; kv; kv = kv->next)
		2474	if (kv->key == key)
		2475	return kv->value;
		2476
		2477	return shstr ();
		2478	}
		2479
		2480	void
		2481	key_values::add (shstr_tmp key, shstr_tmp value)
		2482	{
		2483	key_value *kv = new key_value;
		2484
		2485	kv->next = first;
		2486	kv->key = key;
		2487	kv->value = value;
		2488
		2489	first = kv;
		2490	}
		2491
		2492	void
		2493	key_values::set (shstr_tmp key, shstr_tmp value)
		2494	{
		2495	for (key_value *kv = first; kv; kv = kv->next)
		2496	if (kv->key == key)
2849	{	2497	{
2850	last = field;	2498	kv->value = value;
2851	continue;	2499	return;
2852	}	2500	}
2853		2501
2854	if (value)	2502	add (key, value);
2855	field->value = value;	2503	}
2856	else	2504
		2505	void
		2506	key_values::del (shstr_tmp key)
		2507	{
		2508	for (key_value **kvp = &first; *kvp; kvp = &(*kvp)->next)
		2509	if ((*kvp)->key == key)
2857	{	2510	{
2858	/* Basically, if the archetype has this key set,	2511	key_value *kv = *kvp;
2859	* we need to store the null value so when we save	2512	*kvp = (*kvp)->next;
2860	* it, we save the empty value so that when we load,	2513	delete kv;
2861	* we get this value back again.	2514	return;
2862	*/
2863	if (get_ob_key_link (&op->arch->clone, canonical_key))
2864	field->value = 0;
2865	else
2866	{
2867	if (last)
2868	last->next = field->next;
2869	else
2870	op->key_values = field->next;
2871
2872	delete field;
2873	}
2874	}	2515	}
2875	return TRUE;	2516	}
		2517
		2518	void
		2519	key_values::reverse ()
		2520	{
		2521	key_value *prev = 0;
		2522	key_value *head = first;
		2523
		2524	while (head)
2876	}	2525	{
2877	/* IF we get here, key doesn't exist */	2526	key_value *node = head;
2878		2527	head = head->next;
2879	/* No field, we'll have to add it. */	2528	node->next = prev;
2880		2529	prev = node;
2881	if (!add_key)
2882	{	2530	}
2883	return FALSE;
2884	}
2885	/* There isn't any good reason to store a null
2886	* value in the key/value list. If the archetype has
2887	* this key, then we should also have it, so shouldn't
2888	* be here. If user wants to store empty strings,
2889	* should pass in ""
2890	*/
2891	if (value == NULL)
2892	return TRUE;
2893		2531
2894	field = new key_value;	2532	first = prev;
2895
2896	field->key = canonical_key;
2897	field->value = value;
2898	/* Usual prepend-addition. */
2899	field->next = op->key_values;
2900	op->key_values = field;
2901
2902	return TRUE;
2903	}	2533	}
2904		2534
2905	/*	2535	key_values &
2906	* Updates the key in op to value.	2536	key_values::operator =(const key_values &kv)
2907	*
2908	* If add_key is FALSE, this will only update existing keys,
2909	* and not add new ones.
2910	* In general, should be little reason FALSE is ever passed in for add_key
2911	*
2912	* Returns TRUE on success.
2913	*/
2914	int
2915	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2916	{	2537	{
2917	shstr key_ (key);	2538	clear ();
2918		2539
2919	return set_ob_key_value_s (op, key_, value, add_key);	2540	for (key_value *kvp = kv.first; kvp; kvp = kvp->next)
		2541	add (kvp->key, kvp->value);
		2542
		2543	reverse ();
2920	}	2544	}
2921		2545
2922	object::depth_iterator::depth_iterator (object *container)	2546	object::depth_iterator::depth_iterator (object *container)
2923	: iterator_base (container)	2547	: iterator_base (container)
2924	{	2548	{
…		…
2938	}	2562	}
2939	else	2563	else
2940	item = item->env;	2564	item = item->env;
2941	}	2565	}
2942		2566
		2567	const char *
		2568	object::flag_desc (char *desc, int len) const
		2569	{
		2570	char *p = desc;
		2571	bool first = true;
		2572
		2573	*p = 0;
		2574
		2575	for (int i = 0; i < NUM_FLAGS; i++)
		2576	{
		2577	if (len <= 10) // magic constant!
		2578	{
		2579	snprintf (p, len, ",...");
		2580	break;
		2581	}
		2582
		2583	if (flag [i])
		2584	{
		2585	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2586	len -= cnt;
		2587	p += cnt;
		2588	first = false;
		2589	}
		2590	}
		2591
		2592	return desc;
		2593	}
		2594
2943	// return a suitable string describing an objetc in enough detail to find it	2595	// return a suitable string describing an object in enough detail to find it
2944	const char *	2596	const char *
2945	object::debug_desc (char *info) const	2597	object::debug_desc (char *info) const
2946	{	2598	{
		2599	char flagdesc[512];
2947	char info2[256 * 3];	2600	char info2[256 * 4];
2948	char *p = info;	2601	char *p = info;
2949		2602
2950	p += snprintf (p, 256, "%d=\"%s%s%s\"",	2603	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
2951	count,	2604	count,
		2605	uuid.c_str (),
2952	&name,	2606	&name,
2953	title ? " " : "",	2607	title ? ",title:\"" : "",
2954	title ? (const char *)title : "");	2608	title ? (const char *)title : "",
		2609	title ? "\"" : "",
		2610	flag_desc (flagdesc, 512), type);
2955		2611
2956	if (env)	2612	if (!flag[FLAG_REMOVED] && env)
2957	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));	2613	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
2958		2614
2959	if (map)	2615	if (map)
2960	p += snprintf (p, 256, "(on %s@%d+%d)", map->path, x, y);	2616	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
2961		2617
2962	return info;	2618	return info;
2963	}	2619	}
2964		2620
2965	const char *	2621	const char *
2966	object::debug_desc () const	2622	object::debug_desc () const
2967	{	2623	{
2968	static char info[256 * 3];	2624	static char info[3][256 * 4];
		2625	static int info_idx;
		2626
2969	return debug_desc (info);	2627	return debug_desc (info [++info_idx % 3]);
2970	}	2628	}
2971		2629
		2630	struct region *
		2631	object::region () const
		2632	{
		2633	return map ? map->region (x, y)
		2634	: region::default_region ();
		2635	}
		2636
		2637	void
		2638	object::open_container (object *new_container)
		2639	{
		2640	if (container == new_container)
		2641	return;
		2642
		2643	object *old_container = container;
		2644
		2645	if (old_container)
		2646	{
		2647	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2648	return;
		2649
		2650	#if 0
		2651	// remove the "Close old_container" object.
		2652	if (object *closer = old_container->inv)
		2653	if (closer->type == CLOSE_CON)
		2654	closer->destroy ();
		2655	#endif
		2656
		2657	// make sure the container is available
		2658	esrv_send_item (this, old_container);
		2659
		2660	old_container->flag [FLAG_APPLIED] = false;
		2661	container = 0;
		2662
		2663	// client needs item update to make it work, client bug requires this to be separate
		2664	esrv_update_item (UPD_FLAGS, this, old_container);
		2665
		2666	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2667	play_sound (sound_find ("chest_close"));
		2668	}
		2669
		2670	if (new_container)
		2671	{
		2672	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2673	return;
		2674
		2675	// TODO: this does not seem to serve any purpose anymore?
		2676	#if 0
		2677	// insert the "Close Container" object.
		2678	if (archetype *closer = new_container->other_arch)
		2679	{
		2680	object *closer = new_container->other_arch->instance ();
		2681	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2682	new_container->insert (closer);
		2683	}
		2684	#endif
		2685
		2686	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2687
		2688	// make sure the container is available, client bug requires this to be separate
		2689	esrv_send_item (this, new_container);
		2690
		2691	new_container->flag [FLAG_APPLIED] = true;
		2692	container = new_container;
		2693
		2694	// client needs flag change
		2695	esrv_update_item (UPD_FLAGS, this, new_container);
		2696	esrv_send_inventory (this, new_container);
		2697	play_sound (sound_find ("chest_open"));
		2698	}
		2699	// else if (!old_container->env && contr && contr->ns)
		2700	// contr->ns->floorbox_reset ();
		2701	}
		2702
		2703	object *
		2704	object::force_find (shstr_tmp name)
		2705	{
		2706	/* cycle through his inventory to look for the MARK we want to
		2707	* place
		2708	*/
		2709	for (object *tmp = inv; tmp; tmp = tmp->below)
		2710	if (tmp->type == FORCE && tmp->slaying == name)
		2711	return splay (tmp);
		2712
		2713	return 0;
		2714	}
		2715
		2716	//-GPL
		2717
		2718	void
		2719	object::force_set_timer (int duration)
		2720	{
		2721	this->duration = 1;
		2722	this->speed_left = -1.f;
		2723
		2724	this->set_speed (duration ? 1.f / duration : 0.f);
		2725	}
		2726
		2727	object *
		2728	object::force_add (shstr_tmp name, int duration)
		2729	{
		2730	if (object *force = force_find (name))
		2731	force->destroy ();
		2732
		2733	object *force = archetype::get (FORCE_NAME);
		2734
		2735	force->slaying = name;
		2736	force->force_set_timer (duration);
		2737	force->flag [FLAG_APPLIED] = true;
		2738
		2739	return insert (force);
		2740	}
		2741
		2742	void
		2743	object::play_sound (faceidx sound) const
		2744	{
		2745	if (!sound)
		2746	return;
		2747
		2748	if (is_on_map ())
		2749	map->play_sound (sound, x, y);
		2750	else if (object *pl = in_player ())
		2751	pl->contr->play_sound (sound);
		2752	}
		2753
		2754	void
		2755	object::say_msg (const char *msg) const
		2756	{
		2757	if (is_on_map ())
		2758	map->say_msg (msg, x, y);
		2759	else if (object *pl = in_player ())
		2760	pl->contr->play_sound (sound);
		2761	}
		2762
		2763	void
		2764	object::make_noise ()
		2765	{
		2766	// we do not model noise in the map, so instead put
		2767	// a temporary light into the noise source
		2768	// could use the map instead, but that's less reliable for our
		2769	// goal, which is to make invisibility a bit harder to exploit
		2770
		2771	// currently only works sensibly for players
		2772	if (!is_player ())
		2773	return;
		2774
		2775	// find old force, or create new one
		2776	object *force = force_find (shstr_noise_force);
		2777
		2778	if (force)
		2779	force->speed_left = -1.f; // patch old speed up
		2780	else
		2781	{
		2782	force = archetype::get (shstr_noise_force);
		2783
		2784	force->slaying = shstr_noise_force;
		2785	force->stats.food = 1;
		2786	force->speed_left = -1.f;
		2787
		2788	force->set_speed (1.f / 4.f);
		2789	force->flag [FLAG_IS_USED_UP] = true;
		2790	force->flag [FLAG_APPLIED] = true;
		2791
		2792	insert (force);
		2793	}
		2794	}
		2795
		2796	void object::change_move_type (MoveType mt)
		2797	{
		2798	if (move_type == mt)
		2799	return;
		2800
		2801	if (is_on_map ())
		2802	{
		2803	// we are on the map, so handle move_on/off effects
		2804	remove ();
		2805	move_type = mt;
		2806	map->insert (this, x, y, this);
		2807	}
		2808	else
		2809	move_type = mt;
		2810	}
		2811
		2812	/* object should be a player.
		2813	* we return the object the player has marked with the 'mark' command
		2814	* below. If no match is found (or object has changed), we return
		2815	* NULL. We leave it up to the calling function to print messages if
		2816	* nothing is found.
		2817	*/
		2818	object *
		2819	object::mark () const
		2820	{
		2821	if (contr && contr->mark && contr->mark->env == this)
		2822	return contr->mark;
		2823	else
		2824	return 0;
		2825	}
		2826
		2827	// put marked object first in the inventory
		2828	// this is used by identify-like spells so players can influence
		2829	// the order a bit.
		2830	void
		2831	object::splay_marked ()
		2832	{
		2833	if (object *marked = mark ())
		2834	splay (marked);
		2835	}
		2836

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