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Comparing deliantra/server/common/object.C (file contents):
Revision 1.17 by root, Mon Sep 4 17:27:13 2006 UTC vs.
Revision 1.367 by root, Sun Nov 18 15:19:48 2018 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: object.C,v 1.17 2006/09/04 17:27:13 root Exp $";
4	*/	3	*
5		4	* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
6	/*	5	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	6	* Copyright (©) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	7	* Copyright (©) 1992 Frank Tore Johansen
11		8	*
12	This program is free software; you can redistribute it and/or modify	9	* Deliantra is free software: you can redistribute it and/or modify it under
13	it under the terms of the GNU General Public License as published by	10	* the terms of the Affero GNU General Public License as published by the
14	the Free Software Foundation; either version 2 of the License, or	11	* Free Software Foundation, either version 3 of the License, or (at your
15	(at your option) any later version.	12	* option) any later version.
16		13	*
17	This program is distributed in the hope that it will be useful,	14	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	17	* GNU General Public License for more details.
21		18	*
22	You should have received a copy of the GNU General Public License	19	* You should have received a copy of the Affero GNU General Public License
23	along with this program; if not, write to the Free Software	20	* and the GNU General Public License along with this program. If not, see
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	21	* <http://www.gnu.org/licenses/>.
25		22	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	23	* The authors can be reached via e-mail to <support@deliantra.net>
27	*/	24	*/
28		25
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	26	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	27	#include <stdio.h>
35	#include <sys/types.h>	28	#include <sys/types.h>
36	#include <sys/uio.h>	29	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	30	#include <object.h>
39	#include <funcpoint.h>	31	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>
42	int nrofallocobjects = 0;
43		32
44	object *objects; /* Pointer to the list of used objects */	33	#include <bitset>
45	object *active_objects; /* List of active objects that need to be processed */
46		34
		35	UUID UUID::cur;
		36	static uint64_t seq_next_save;
		37	static const uint64 UUID_GAP = 1<<19;
		38	uint32_t mapspace::smellcount = 10000;
		39
		40	objectvec objects;
		41	activevec actives;
		42
		43	freelist_item *object::freelist;
		44	uint32_t object::object_count;
		45	uint32_t object::free_count;
		46	uint32_t object::create_count;
		47	uint32_t object::destroy_count;
		48
		49	//+GPL
		50
47	short freearr_x[SIZEOFFREE]=	51	int freearr_x[SIZEOFFREE] = {
48	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,	52	0,
		53	0, 1, 1, 1, 0, -1, -1, -1,
		54	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	55	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		56	};
50	short freearr_y[SIZEOFFREE]=	57	int freearr_y[SIZEOFFREE] = {
51	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	58	0,
		59	-1, -1, 0, 1, 1, 1, 0, -1,
		60	-2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
52	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	61	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	int maxfree[SIZEOFFREE]=	62	};
54	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};
56	int freedir[SIZEOFFREE]= {	63	int freedir[SIZEOFFREE] = {
57	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	64	0,
58	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	65	1, 2, 3, 4, 5, 6, 7, 8,
		66	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		67	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		68	};
59		69
		70	static int maxfree[SIZEOFFREE] = {
		71	0,
		72	9, 10, 13, 14, 17, 18, 21, 22,
		73	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		74	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		75	};
		76
		77	const char *wall_suffix[16] = {
		78	"0",
		79	"1_3",
		80	"1_4",
		81	"2_1_2",
		82	"1_2",
		83	"2_2_4",
		84	"2_2_1",
		85	"3_1",
		86	"1_1",
		87	"2_2_3",
		88	"2_2_2",
		89	"3_3",
		90	"2_1_1",
		91	"3_4",
		92	"3_2",
		93	"4"
		94	};
		95
		96	static void
		97	write_uuid (uval64 skip, bool sync)
		98	{
		99	CALL_BEGIN (2);
		100	CALL_ARG_SV (newSVval64 (skip));
		101	CALL_ARG_SV (boolSV (sync));
		102	CALL_CALL ("cf::write_uuid", G_DISCARD);
		103	CALL_END;
		104	}
		105
		106	static void
		107	read_uuid ()
		108	{
		109	char filename[MAX_BUF];
		110
		111	sprintf (filename, "%s/uuid", settings.localdir);
		112
		113	seq_next_save = 0;
		114
		115	FILE *fp;
		116
		117	if (!(fp = fopen (filename, "r")))
		118	{
		119	if (errno == ENOENT)
		120	{
		121	LOG (llevInfo, "RESET uid to 1\n");
		122	UUID::cur.seq = 0;
		123	write_uuid (UUID_GAP, true);
		124	return;
		125	}
		126
		127	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		128	_exit (1);
		129	}
		130
		131	char buf [UUID::MAX_LEN];
		132	buf[0] = 0;
		133	fgets (buf, sizeof (buf), fp);
		134
		135	if (!UUID::cur.parse (buf))
		136	{
		137	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		138	_exit (1);
		139	}
		140
		141	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		142
		143	write_uuid (UUID_GAP, true);
		144	fclose (fp);
		145	}
		146
		147	UUID
		148	UUID::gen ()
		149	{
		150	UUID uid;
		151
		152	uid.seq = ++cur.seq;
		153
		154	if (expect_false (cur.seq >= seq_next_save))
		155	{
		156	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		157	write_uuid (UUID_GAP, false);
		158	}
		159
		160
		161	return uid;
		162	}
		163
		164	void
		165	UUID::init ()
		166	{
		167	read_uuid ();
		168	}
		169
		170	bool
		171	UUID::parse (const char *s)
		172	{
		173	if (*s++ != '<' || *s++ != '1' || *s++ != '.')
		174	return false;
		175
		176	seq = 0;
		177
		178	while (*s != '>')
		179	{
		180	if (*s < '0')
		181	return false;
		182
		183	// this gives nice branchless code with gcc
		184	assert ('0' < 'a' && '0' == 48 && 'a' == 97);
		185	int digit = (*s + (*s & 0x40 ? 9 : 0)) & 15;
		186
		187	seq = (seq << 4) | digit;
		188
		189	++s;
		190	}
		191
		192	return true;
		193	}
		194
		195	char *
		196	UUID::append (char *buf) const
		197	{
		198	*buf++ = '<';
		199	*buf++ = '1';
		200	*buf++ = '.';
		201
		202	uint64_t seq = this->seq;
		203	const int bits = 64;
		204	char nz = 0;
		205	static const char tohex [] = "0123456789abcdef";
		206
		207	// assert (len >= 3 + bits / 4 + 1 + 1);
		208	for (int i = bits / 4; --i; )
		209	{
		210	uint8_t digit = seq >> (bits - 4);
		211
		212	*buf = tohex [digit];
		213	nz |= digit;
		214	buf += nz ? 1 : 0;
		215	seq <<= 4;
		216	}
		217
		218	// last digit is special - always emit
		219	uint8_t digit = seq >> (bits - 4);
		220	*buf++ = tohex [digit];
		221
		222	*buf++ = '>';
		223
		224	return buf;
		225	}
		226
		227	char *
		228	UUID::c_str () const
		229	{
		230	static char buf [MAX_LEN];
		231	*append (buf) = 0;
		232	return buf;
		233	}
60		234
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	235	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		236	static bool
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	237	compare_ob_value_lists_one (const object *wants, const object *has)
63	key_value * wants_field;	238	{
64
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	239	/* n-squared behaviour (see kv.get), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	240	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	241	* different structure or at least keep the lists sorted...
68	*/	242	*/
69		243
70	/* For each field in wants, */	244	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	245	for (key_value *kv = wants->kv.first; kv; kv = kv->next)
72	key_value * has_field;	246	if (has->kv.get (kv->key) != kv->value)
73		247	return false;
74	/* Look for a field in has with the same key. */	248
75	has_field = get_ob_key_link(has, wants_field->key);
76
77	if (has_field == NULL) {
78	/* No field with that name. */
79	return FALSE;
80	}
81
82	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {
84	/* Values don't match, so this half of the comparison is false. */
85	return FALSE;
86	}
87
88	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90
91	/* If we get here, every field in wants has a matching field in has. */	249	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	250	return true;
93	}	251	}
94		252
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	253	/* Returns TRUE if ob1 has the same key_values as ob2. */
		254	static bool
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	255	compare_ob_value_lists (const object *ob1, const object *ob2)
		256	{
97	/* However, there may be fields in has which aren't partnered in wants,	257	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	258	* so we need to run the comparison *twice*. :(
99	*/	259	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	260	return compare_ob_value_lists_one (ob1, ob2)
		261	&& compare_ob_value_lists_one (ob2, ob1);
101	}	262	}
102		263
103	/* Function examines the 2 objects given to it, and returns true if	264	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	265	* they can be merged together.
105	*	266	*
106	* Note that this function appears a lot longer than the macro it	267	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	268	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	269	* reduce this to the same efficiency.
109	*	270	*
110	* Check nrof variable *before* calling CAN_MERGE()	271	* Check nrof variable *before* calling can_merge()
111	*	272	*
112	* Improvements made with merge: Better checking on potion, and also	273	* Improvements made with merge: Better checking on potion, and also
113	* check weight	274	* check weight
114	*/	275	*/
115
116	bool
117	object::can_merge (object *ob1, object *ob2)	276	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	277	{
119	/* A couple quicksanity checks */	278	/* A couple quick sanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	279	if (ob1 == ob2
		280	|| ob1->type != ob2->type
		281	|| ob1->value != ob2->value
		282	|| ob1->name != ob2->name
		283	|| ob1->custom_name != ob2->custom_name
		284	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED)
121	return 0;	285	return 0;
122		286
123	if (ob1->speed != ob2->speed)	287	/* Do not merge objects if nrof would overflow, assume nrof
		288	* is always 0 .. 2**31-1 */
		289	if (ob1->nrof > 0x7fffffff - ob2->nrof)
124	return 0;	290	return 0;
125		291
126	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
127	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).
129	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)
131	return 0;
132
133	/* If the objects have been identified, set the BEEN_APPLIED flag.	292	/* If the objects have been identified, set the BEEN_APPLIED flag.
134	* This is to the comparison of the flags below will be OK. We	293	* This is to the comparison of the flags below will be OK. We
135	* just can't ignore the been applied or identified flags, as they	294	* just can't ignore the been applied or identified flags, as they
136	* are not equal - just if it has been identified, the been_applied	295	* are not equal - just if it has been identified, the been_applied
137	* flags lose any meaning.	296	* flags lose any meaning.
138	*/	297	*/
139	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	298	if (ob1->flag [FLAG_IDENTIFIED])
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	299	ob1->set_flag (FLAG_BEEN_APPLIED);
141		300
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	301	if (ob2->flag [FLAG_IDENTIFIED])
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	302	ob2->set_flag (FLAG_BEEN_APPLIED);
144		303
145		304	if (ob1->arch->archname != ob2->arch->archname
146	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
147	* being locked in inventory should prevent merging.
148	* 0x4 in flags3 is CLIENT_SENT
149	*/
150	if ((ob1->arch != ob2->arch) ||
151	(ob1->flags[0] != ob2->flags[0]) ||
152	(ob1->flags[1] != ob2->flags[1]) ||
153	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
154	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
155	(ob1->name != ob2->name) ||	305	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	306	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	307	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	308	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||
161	(ob1->attacktype != ob2->attacktype) ||	309	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	310	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	311	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	312	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	313	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	314	|| ob1->animation_id != ob2->animation_id
		315	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependend on each other
167	(ob1->client_type != ob2->client_type) ||	316	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	317	|| ob1->material != ob2->material
169	(ob1->lore != ob2->lore) ||	318	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	319	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	320	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	321	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	322	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	323	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	324	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	325	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	326	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		327	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		328	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
178	return 0;	329	return 0;
179		330
		331	if ((ob1->flag ^ ob2->flag)
		332	.reset (FLAG_INV_LOCKED)
		333	.reset (FLAG_REMOVED)
		334	.any ())
		335	return 0;
		336
180	/* This is really a spellbook check - really, we should	337	/* This is really a spellbook check - we should in general
181	* check all objects in the inventory.	338	* not merge objects with real inventories, as splitting them
		339	* is hard.
182	*/	340	*/
183	if (ob1->inv || ob2->inv)	341	if (ob1->inv || ob2->inv)
184	{	342	{
185	/* if one object has inventory but the other doesn't, not equiv */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;
188
189	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	343	if (!(ob1->inv && ob2->inv))
191	return 0;	344	return 0; /* inventories differ in length */
		345
		346	if (ob1->inv->below || ob2->inv->below)
		347	return 0; /* more than one object in inv */
		348
		349	if (!object::can_merge (ob1->inv, ob2->inv))
		350	return 0; /* inventory objects differ */
192		351
193	/* inventory ok - still need to check rest of this object to see	352	/* inventory ok - still need to check rest of this object to see
194	* if it is valid.	353	* if it is valid.
195	*/	354	*/
196	}	355	}
197		356
198	/* Don't merge objects that are applied. With the new 'body' code,	357	/* Don't merge objects that are applied. With the new 'body' code,
199	* it is possible for most any character to have more than one of	358	* it is possible for most any character to have more than one of
200	* some items equipped, and we don't want those to merge.	359	* some items equipped, and we don't want those to merge.
201	*/	360	*/
202	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))	361	if (ob1->flag [FLAG_APPLIED] || ob2->flag [FLAG_APPLIED])
203	return 0;	362	return 0;
204		363
205	/* Note sure why the following is the case - either the object has to	364	/* Not sure why the following is the case - either the object has to
206	* be animated or have a very low speed. Is this an attempted monster	365	* be animated or have a very low speed. Is this an attempted monster
207	* check?	366	* check?
208	*/	367	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	368	if (!ob1->flag [FLAG_ANIMATE] && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	369	return 0;
212		370
213	switch (ob1->type)	371	switch (ob1->type)
214	{	372	{
215	case SCROLL:	373	case SCROLL:
216	if (ob1->level != ob2->level)	374	if (ob1->level != ob2->level)
217	return 0;	375	return 0;
218	break;	376	break;
219	}	377	}
220		378
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	379	if (!ob1->kv.empty () || !ob2->kv.empty ())
222	{	380	{
223	/* At least one of these has key_values. */	381	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	382	if (ob1->kv.empty () != ob2->kv.empty ())
225	/* One has fields, but the other one doesn't. */	383	return 0; /* One has fields, but the other one doesn't. */
226	return 0;	384
227	else if (!compare_ob_value_lists (ob1, ob2))	385	if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	386	return 0;
229	}	387	}
230		388
231	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	389	if (ob1->self || ob2->self)
233	{	390	{
234	ob1->optimise ();	391	ob1->optimise ();
235	ob2->optimise ();	392	ob2->optimise ();
236		393
237	if (ob1->self || ob2->self)	394	if (ob1->self || ob2->self)
238	return 0;	395	{
		396	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		397	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		398
		399	if (k1 != k2)
		400	return 0;
		401
		402	if (k1 == 0)
		403	return 1;
		404
		405	if (!cfperl_can_merge (ob1, ob2))
		406	return 0;
		407	}
239	}	408	}
240		409
241	/* Everything passes, must be OK. */	410	/* Everything passes, must be OK. */
242	return 1;	411	return 1;
243	}	412	}
		413
		414	// find player who can see this object
		415	object *
		416	object::visible_to () const
		417	{
		418	if (client_visible () && !flag [FLAG_REMOVED])
		419	{
		420	// see if we are in a container of sorts
		421	if (env)
		422	{
		423	// the player inventory itself is always visible
		424	if (env->is_player ())
		425	return env;
		426
		427	// else a player could have our env open
		428	object *envest = env->outer_env_or_self ();
		429
		430	// the player itself is always on a map, so we will find him here
		431	// even if our inv is in a player.
		432	if (envest->is_on_map ())
		433	if (object *pl = envest->ms ().player ())
		434	if (pl->container_ () == env)
		435	return pl;
		436	}
		437	else
		438	{
		439	// maybe there is a player standing on the same mapspace
		440	// this will catch the case where "this" is a player
		441	if (object *pl = ms ().player ())
		442	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		443	|| pl->container_ () == this)
		444	return pl;
		445	}
		446	}
		447
		448	return 0;
		449	}
		450
		451	// adjust weight per container type ("of holding")
		452	static weight_t
		453	weight_adjust_for (object *op, weight_t weight)
		454	{
		455	if (op->type == CONTAINER)
		456	weight -= weight * op->stats.Str / 100;
		457
		458	return weight;
		459	}
		460
244	/*	461	/*
		462	* subtracts, then adds, the specified weight to an object,
		463	* and also updates how much the environment(s) is/are carrying.
		464	*/
		465	static void
		466	adjust_weight (object *op, weight_t sub, weight_t add)
		467	{
		468	while (op)
		469	{
		470	weight_t carrying = (weight_t)op->carrying
		471	- weight_adjust_for (op, sub)
		472	+ weight_adjust_for (op, add);
		473
		474	sub = op->carrying;
		475	op->carrying = carrying;
		476	add = op->carrying;
		477
		478	if (object *pl = op->visible_to ())
		479	if (pl != op) // player is handled lazily
		480	esrv_update_item (UPD_WEIGHT, pl, op);
		481
		482	op = op->env;
		483	}
		484	}
		485
		486	/*
245	* sum_weight() is a recursive function which calculates the weight	487	* this is a recursive function which calculates the weight
246	* an object is carrying. It goes through in figures out how much	488	* an object is carrying. It goes through op and figures out how much
247	* containers are carrying, and sums it up.	489	* containers are carrying, and sums it up.
248	*/	490	*/
249	signed long sum_weight(object *op) {	491	void
250	signed long sum;	492	object::update_weight ()
251	object *inv;	493	{
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	494	weight_t sum = 0;
253	if (inv->inv)	495
254	sum_weight(inv);	496	for (object *op = inv; op; op = op->below)
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	497	{
		498	op->update_weight ();
		499
		500	sum += weight_adjust_for (this, op->total_weight ());
256	}	501	}
257	if (op->type == CONTAINER && op->stats.Str)	502
258	sum = (sum * (100 - op->stats.Str))/100;	503	if (sum != carrying)
259	if(op->carrying != sum)	504	{
		505	if (carrying != sum && carrying)//D
		506	LOG (llevDebug, "updating carrying got %ld, expected %ld (%s)\n",
		507	(long long)sum, (long long)carrying, debug_desc ());
		508
260	op->carrying = sum;	509	carrying = sum;
261	return sum;
262	}
263		510
		511	if (object *pl = visible_to ())
		512	if (pl != this) // player is handled lazily
		513	esrv_update_item (UPD_WEIGHT, pl, this);
		514	}
		515	}
		516
264	/**	517	/*
265	* Return the outermost environment object for a given object.	518	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
266	*/	519	*/
267		520	char *
268	object *object_get_env_recursive (object *op) {
269	while (op->env != NULL)
270	op = op->env;
271	return op;
272	}
273
274	/*
275	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
276	* a better check. We basically keeping traversing up until we can't
277	* or find a player.
278	*/
279
280	object *is_player_inv (object *op) {
281	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
282	if (op->env==op)
283	op->env = NULL;
284	return op;
285	}
286
287	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.
290	* The result of the dump is stored in the static global errmsg array.
291	*/
292
293	void dump_object2(object *op) {
294	errmsg[0] = 0;
295	return;
296	//TODO//D#d#
297	#if 0
298	char *cp;
299	/* object *tmp;*/
300
301	if(op->arch!=NULL) {
302	strcat(errmsg,"arch ");
303	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
304	strcat(errmsg,"\n");
305	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	#if 0
308	/* Don't dump player diffs - they are too long, mostly meaningless, and
309	* will overflow the buffer.
310	* Changed so that we don't dump inventory either. This may
311	* also overflow the buffer.
312	*/
313	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	} else {
320	strcat(errmsg,"Object ");
321	if (op->name==NULL) strcat(errmsg, "(null)");
322	else strcat(errmsg,op->name);
323	strcat(errmsg,"\n");
324	#if 0
325	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
326	strcat(errmsg,cp);
327	for (tmp=op->inv; tmp; tmp=tmp->below)
328	dump_object2(tmp);
329	#endif
330	strcat(errmsg,"end\n");
331	}
332	#endif
333	}
334
335	/*
336	* Dumps an object. Returns output in the static global errmsg array.
337	*/
338
339	void dump_object(object *op) {	521	dump_object (object *op)
340	if(op==NULL) {	522	{
341	strcpy(errmsg,"[NULL pointer]");	523	if (!op)
342	return;	524	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		525
348	void dump_all_objects(void) {	526	object_freezer freezer;
349	object *op;	527	op->write (freezer);
350	for(op=objects;op!=NULL;op=op->next) {	528	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	529	}
355		530
356	/*	531	char *
357	* get_nearest_part(multi-object, object 2) returns the part of the	532	object::as_string ()
358	* multi-object 1 which is closest to the second object.	533	{
359	* If it's not a multi-object, it is returned.	534	return dump_object (this);
360	*/
361
362	object *get_nearest_part(object *op, const object *pl) {
363	object *tmp,*closest;
364	int last_dist,i;
365	if(op->more==NULL)
366	return op;
367	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
368	if((i=distance(tmp,pl))<last_dist)
369	closest=tmp,last_dist=i;
370	return closest;
371	}	535	}
372		536
373	/*	537	/*
374	* Returns the object which has the count-variable equal to the argument.	538	* Returns the object which has the count-variable equal to the argument.
		539	* VERRRY slow.
375	*/	540	*/
376		541	object *
377	object *find_object(tag_t i) {	542	find_object (tag_t i)
378	object *op;	543	{
379	for(op=objects;op!=NULL;op=op->next)	544	for_all_objects (op)
380	if(op->count==i)	545	if (op->count == i)
381	break;
382	return op;	546	return op;
		547
		548	return 0;
		549	}
		550
		551	/*
		552	* Returns the object which has the uuid equal to the argument.
		553	* MOAR VERRRY slow.
		554	*/
		555
		556	object *
		557	find_object_uuid (UUID i)
		558	{
		559	for_all_objects (op)
		560	if (op->uuid == i)
		561	return op;
		562
		563	return 0;
383	}	564	}
384		565
385	/*	566	/*
386	* Returns the first object which has a name equal to the argument.	567	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	568	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	569	* Enables features like "patch <name-of-other-player> food 999"
389	*/	570	*/
390		571	object *
391	object *find_object_name(const char *str) {	572	find_object_name (const char *str)
392	const char *name = shstr::find (str);	573	{
393	object *op;	574	shstr_cmp str_ (str);
394	for(op=objects;op!=NULL;op=op->next)	575
		576	if (str_)
		577	for_all_objects (op)
395	if(&op->name == name)	578	if (op->name == str_)
396	break;	579	return op;
397		580
398	return op;	581	return 0;
399	}
400
401	void free_all_object_data ()
402	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
404	}
405
406	/*
407	* Returns the object which this object marks as being the owner.
408	* A id-scheme is used to avoid pointing to objects which have been
409	* freed and are now reused. If this is detected, the owner is
410	* set to NULL, and NULL is returned.
411	* Changed 2004-02-12 - if the player is setting at the play again
412	* prompt, he is removed, and we don't want to treat him as an owner of
413	* anything, so check removed flag. I don't expect that this should break
414	* anything - once an object is removed, it is basically dead anyways.
415	*/
416
417	object *get_owner(object *op) {
418	if(op->owner==NULL)
419	return NULL;
420
421	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
422	op->owner->count==op->ownercount)
423	return op->owner;
424
425	op->owner=NULL;
426	op->ownercount=0;
427	return NULL;
428	}
429
430	void clear_owner(object *op)
431	{
432	if (!op) return;
433
434	if (op->owner && op->ownercount == op->owner->count)
435	op->owner->refcount--;
436
437	op->owner = NULL;
438	op->ownercount = 0;
439	}	582	}
440		583
441	/*	584	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	585	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	586	* skill and experience objects.
		587	* ACTUALLY NO! investigate! TODO
444	*/	588	*/
445	void set_owner (object *op, object *owner)	589	void
		590	object::set_owner (object *owner)
446	{	591	{
447	if(owner==NULL||op==NULL)	592	// allow objects which own objects
		593	if (owner)
		594	while (owner->owner)
		595	owner = owner->owner;
		596
		597	if (flag [FLAG_FREED])
		598	{
		599	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
448	return;	600	return;
449
450	/* next line added to allow objects which own objects */
451	/* Add a check for ownercounts in here, as I got into an endless loop
452	* with the fireball owning a poison cloud which then owned the
453	* fireball. I believe that was caused by one of the objects getting
454	* freed and then another object replacing it. Since the ownercounts
455	* didn't match, this check is valid and I believe that cause is valid.
456	*/
457	while (owner->owner && owner!=owner->owner &&
458	owner->ownercount==owner->owner->count) owner=owner->owner;
459
460	/* IF the owner still has an owner, we did not resolve to a final owner.
461	* so lets not add to that.
462	*/
463	if (owner->owner) return;
464
465	op->owner=owner;
466
467	op->ownercount=owner->count;
468	owner->refcount++;
469
470	}
471
472	/* Set the owner to clone's current owner and set the skill and experience
473	* objects to clone's objects (typically those objects that where the owner's
474	* current skill and experience objects at the time when clone's owner was
475	* set - not the owner's current skill and experience objects).
476	*
477	* Use this function if player created an object (e.g. fire bullet, swarm
478	* spell), and this object creates further objects whose kills should be
479	* accounted for the player's original skill, even if player has changed
480	* skills meanwhile.
481	*/
482	void copy_owner (object *op, object *clone)
483	{
484	object *owner = get_owner (clone);
485	if (owner == NULL) {
486	/* players don't have owners - they own themselves. Update
487	* as appropriate.
488	*/
489	if (clone->type == PLAYER) owner=clone;
490	else return;
491	}
492	set_owner(op, owner);
493
494	}
495
496	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.
498	*/
499	static void free_key_values(object * op)
500	{
501	for (key_value *i = op->key_values; i != 0; )
502	{	601	}
503	key_value *next = i->next;
504	delete i;
505	i = next;
506	}
507
508	op->key_values = 0;
509	}
510		602
511	void object::clear ()	603	this->owner = owner;
512	{
513	attachable_base::clear ();
514
515	free_key_values (this);
516
517	name = 0;
518	name_pl = 0;
519	title = 0;
520	race = 0;
521	slaying = 0;
522	skill = 0;
523	msg = 0;
524	lore = 0;
525	custom_name = 0;
526	materialname = 0;
527
528	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
529
530	SET_FLAG (this, FLAG_REMOVED);
531	}	604	}
532		605
533	void object::clone (object *destination)
534	{
535	*(object_copy *)destination = *(object_copy *)this;
536	*(object_pod *)destination = *(object_pod *)this;
537
538	if (self || cb)
539	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
540	}
541
542	/*	606	/*
543	* clear_object() frees everything allocated by an object, and also
544	* clears all variables and flags to default settings.
545	*/
546
547	void clear_object (object *op)
548	{
549	op->clear ();
550
551	op->contr = NULL;
552	op->below = NULL;
553	op->above = NULL;
554	op->inv = NULL;
555	op->container=NULL;
556	op->env=NULL;
557	op->more=NULL;
558	op->head=NULL;
559	op->map=NULL;
560	op->refcount=0;
561	op->active_next = NULL;
562	op->active_prev = NULL;
563	/* What is not cleared is next, prev, and count */
564
565	op->expmul = 1.0;
566	op->face = blank_face;
567	op->attacked_by_count = -1;
568
569	if (settings.casting_time)
570	op->casting_time = -1;
571	}
572
573	/*
574	* copy object first frees everything allocated by the second object,	607	* copy_to first frees everything allocated by the dst object,
575	* and then copies the contends of the first object into the second	608	* and then copies the contents of itself into the second
576	* object, allocating what needs to be allocated. Basically, any	609	* object, allocating what needs to be allocated. Basically, any
577	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	610	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
578	* if the first object is freed, the pointers in the new object	611	* if the first object is freed, the pointers in the new object
579	* will point at garbage.	612	* will point at garbage.
580	*/	613	*/
581		614	void
582	void copy_object (object *op2, object *op)	615	object::copy_to (object *dst)
583	{	616	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	617	dst->remove ();
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	618	*(object_copy *)dst = *this;
586		619
587	op2->clone (op);	620	// maybe move to object_copy?
		621	dst->kv = kv;
588		622
589	if (is_freed) SET_FLAG (op, FLAG_FREED);	623	dst->flag [FLAG_REMOVED] = true;
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	624	dst->activate ();
591
592	if (op2->speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
594
595	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)
597	{
598	key_value *tail = NULL;
599	key_value *i;
600
601	op->key_values = NULL;
602
603	for (i = op2->key_values; i != NULL; i = i->next)
604	{
605	key_value *new_link = new key_value;
606
607	new_link->next = NULL;
608	new_link->key = i->key;
609	new_link->value = i->value;
610
611	/* Try and be clever here, too. */
612	if (op->key_values == NULL)
613	{
614	op->key_values = new_link;
615	tail = new_link;
616	}
617	else
618	{
619	tail->next = new_link;
620	tail = new_link;
621	}
622	}
623	}
624
625	update_ob_speed (op);
626	}	625	}
627		626
628	/*	627	void
629	* get_object() grabs an object from the list of unused objects, makes	628	object::instantiate ()
630	* sure it is initialised, and returns it.	629	{
631	* If there are no free objects, expand_objects() is called to get more.	630	if (!uuid.seq) // HACK
		631	uuid = UUID::gen ();
		632
		633	// TODO: unclean state changes, should not be done in copy_to AND instantiate
		634	if (flag [FLAG_RANDOM_SPEED] && speed)
		635	speed_left = - speed - rndm (); // TODO animation
		636	else
		637	speed_left = -1.;
		638
		639	/* copy the body_info to the body_used - this is only really
		640	* need for monsters, but doesn't hurt to do it for everything.
		641	* by doing so, when a monster is created, it has good starting
		642	* values for the body_used info, so when items are created
		643	* for it, they can be properly equipped.
632	*/	644	*/
		645	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		646	slot[i].used = slot[i].info;
633		647
634	object *get_object ()	648	attachable::instantiate ();
635	{	649	}
636	object *op = new object;
637		650
638	op->count = ++ob_count;	651	object *
		652	object::clone ()
		653	{
		654	object *neu = create ();
		655	copy_to (neu);
639		656
640	op->active_next = 0;	657	// TODO: unclean state changes, should not be done in clone AND instantiate
641	op->active_prev = 0;	658	if (neu->flag [FLAG_RANDOM_SPEED] && neu->speed)
		659	neu->speed_left = - neu->speed - rndm (); // TODO animation
642		660
643	op->next = objects;	661	neu->map = map; // not copied by copy_to
644	op->prev = 0;
645
646	if (objects)
647	objects->prev = op;
648
649	objects = op;
650
651	SET_FLAG (op, FLAG_REMOVED);
652
653	op->expmul = 1.0;
654	op->face = blank_face;
655	op->attacked_by_count = -1;
656
657	return op;	662	return neu;
		663	}
		664
		665	// update the anhimation frame of an object, but only if it has an animation
		666	// assigned and the frame number if within the animation.
		667	void object::update_anim_frame (int frame)
		668	{
		669	if (ecb_expect_false (!has_anim () || frame >= anim_frames ()))
		670	return;
		671
		672	set_anim_frame (frame);
		673	update_object (this, UP_OBJ_FACE);
658	}	674	}
659		675
660	/*	676	/*
661	* If an object with the IS_TURNABLE() flag needs to be turned due	677	* If an object with the IS_TURNABLE() flag needs to be turned due
662	* to the closest player being on the other side, this function can	678	* to the closest player being on the other side, this function can
663	* be called to update the face variable, _and_ how it looks on the map.	679	* be called to update the face variable, _and_ how it looks on the map.
664	*/	680	*/
665		681	void
666	void update_turn_face(object *op) {	682	update_turn_face (object *op)
667	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	683	{
		684	if (!op->flag [FLAG_IS_TURNABLE] || !op->arch)
668	return;	685	return;
669	SET_ANIMATION(op, op->direction);	686
670	update_object(op,UP_OBJ_FACE);	687	op->update_anim_frame (op->direction);
671	}	688	}
672		689
673	/*	690	/*
674	* Updates the speed of an object. If the speed changes from 0 to another	691	* Updates the speed of an object. If the speed changes from 0 to another
675	* value, or vice versa, then add/remove the object from the active list.	692	* value, or vice versa, then add/remove the object from the active list.
676	* This function needs to be called whenever the speed of an object changes.	693	* This function needs to be called whenever the speed of an object changes.
677	*/	694	*/
		695	void
		696	object::set_speed (float speed)
		697	{
		698	this->speed = speed;
678		699
679	void update_ob_speed(object *op) {	700	if (has_active_speed ())
680	extern int arch_init;	701	activate ();
681
682	/* No reason putting the archetypes objects on the speed list,
683	* since they never really need to be updated.
684	*/
685
686	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
687	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);
688	#ifdef MANY_CORES
689	abort();
690	#else
691	op->speed = 0;
692	#endif
693	}
694	if (arch_init) {
695	return;
696	}
697	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
698	/* If already on active list, don't do anything */
699	if (op->active_next || op->active_prev || op==active_objects)
700	return;
701
702	/* process_events() expects us to insert the object at the beginning
703	* of the list. */
704	op->active_next = active_objects;
705	if (op->active_next!=NULL)
706	op->active_next->active_prev = op;
707	active_objects = op;
708	}
709	else {	702	else
710	/* If not on the active list, nothing needs to be done */	703	deactivate ();
711	if (!op->active_next && !op->active_prev && op!=active_objects)
712	return;
713
714	if (op->active_prev==NULL) {
715	active_objects = op->active_next;
716	if (op->active_next!=NULL)
717	op->active_next->active_prev = NULL;
718	}
719	else {
720	op->active_prev->active_next = op->active_next;
721	if (op->active_next)
722	op->active_next->active_prev = op->active_prev;
723	}
724	op->active_next = NULL;
725	op->active_prev = NULL;
726	}
727	}	704	}
728		705
729	/* This function removes object 'op' from the list of active
730	* objects.
731	* This should only be used for style maps or other such
732	* reference maps where you don't want an object that isn't
733	* in play chewing up cpu time getting processed.
734	* The reverse of this is to call update_ob_speed, which
735	* will do the right thing based on the speed of the object.
736	*/
737	void remove_from_active_list(object *op)
738	{
739	/* If not on the active list, nothing needs to be done */
740	if (!op->active_next && !op->active_prev && op!=active_objects)
741	return;
742
743	if (op->active_prev==NULL) {
744	active_objects = op->active_next;
745	if (op->active_next!=NULL)
746	op->active_next->active_prev = NULL;
747	}
748	else {
749	op->active_prev->active_next = op->active_next;
750	if (op->active_next)
751	op->active_next->active_prev = op->active_prev;
752	}
753	op->active_next = NULL;
754	op->active_prev = NULL;
755	}
756
757	/*	706	/*
758	* update_object() updates the array which represents the map.	707	* update_object() updates the map.
759	* It takes into account invisible objects (and represent squares covered	708	* It takes into account invisible objects (and represent squares covered
760	* by invisible objects by whatever is below them (unless it's another	709	* by invisible objects by whatever is below them (unless it's another
761	* invisible object, etc...)	710	* invisible object, etc...)
762	* If the object being updated is beneath a player, the look-window	711	* If the object being updated is beneath a player, the look-window
763	* of that player is updated (this might be a suboptimal way of	712	* of that player is updated (this might be a suboptimal way of
764	* updating that window, though, since update_object() is called _often_)	713	* updating that window, though, since update_object() is called _often_)
765	*	714	*
766	* action is a hint of what the caller believes need to be done.	715	* action is a hint of what the caller believes need to be done.
767	* For example, if the only thing that has changed is the face (due to
768	* an animation), we don't need to call update_position until that actually
769	* comes into view of a player. OTOH, many other things, like addition/removal
770	* of walls or living creatures may need us to update the flags now.
771	* current action are:	716	* current action are:
772	* UP_OBJ_INSERT: op was inserted	717	* UP_OBJ_INSERT: op was inserted
773	* UP_OBJ_REMOVE: op was removed	718	* UP_OBJ_REMOVE: op was removed
774	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	719	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
775	* as that is easier than trying to look at what may have changed.	720	* as that is easier than trying to look at what may have changed.
776	* UP_OBJ_FACE: only the objects face has changed.	721	* UP_OBJ_FACE: only the objects face has changed.
777	*/	722	*/
778		723	void
779	void update_object(object *op, int action) {	724	update_object (object *op, int action)
780	int update_now=0, flags;	725	{
781	MoveType move_on, move_off, move_block, move_slow;	726	if (!op)
782		727	{
783	if (op == NULL) {
784	/* this should never happen */	728	/* this should never happen */
785	LOG(llevDebug,"update_object() called for NULL object.\n");	729	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
786	return;	730	return;
787	}
788		731	}
789	if(op->env!=NULL) {	732
		733	if (!op->is_on_map ())
		734	{
790	/* Animation is currently handled by client, so nothing	735	/* Animation is currently handled by client, so nothing
791	* to do in this case.	736	* to do in this case.
792	*/	737	*/
793	return;	738	return;
794	}
795
796	/* If the map is saving, don't do anything as everything is
797	* going to get freed anyways.
798	*/
799	if (!op->map || op->map->in_memory == MAP_SAVING) return;
800		739	}
		740
801	/* make sure the object is within map boundaries */	741	/* make sure the object is within map boundaries */
802	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	742	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
803	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	743	{
804	LOG(llevError,"update_object() called for object out of map!\n");	744	LOG (llevError, "update_object() called for object out of map!\n");
805	#ifdef MANY_CORES	745	#ifdef MANY_CORES
806	abort();	746	abort ();
807	#endif	747	#endif
808	return;	748	return;
809	}
810		749	}
811	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
812	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
813	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
814	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
815	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
816	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
817		750
		751	mapspace &m = op->ms ();
		752
		753	if (!(m.flags_ & P_UPTODATE))
		754	m.update_up (); // nothing to do except copy up
818	if (action == UP_OBJ_INSERT) {	755	else if (action == UP_OBJ_INSERT)
		756	{
		757	#if 0
		758	// this is likely overkill, TODO: revisit (schmorp)
819	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	759	if ((op->flag [FLAG_BLOCKSVIEW] && !(m.flags_ & P_BLOCKSVIEW))
820	update_now=1;	760	|| (op->flag [FLAG_NO_MAGIC] && !(m.flags_ & P_NO_MAGIC))
821		761	|| (op->is_player () && !(m.flags_ & P_PLAYER))
822	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	762	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
823	update_now=1;	763	|| (op->flag [FLAG_ALIVE] && !(m.flags_ & P_IS_ALIVE))
824		764	|| (op->flag [FLAG_DAMNED] && !(m.flags_ & P_NO_CLERIC))
825	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	765	|| (m.move_on | op->move_on ) != m.move_on
826	update_now=1;
827
828	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
829	update_now=1;
830
831	if ((move_on | op->move_on) != move_on) update_now=1;
832	if ((move_off | op->move_off) != move_off) update_now=1;	766	|| (m.move_off | op->move_off ) != m.move_off
		767	|| (m.move_slow | op->move_slow) != m.move_slow
833	/* This isn't perfect, but I don't expect a lot of objects to	768	/* This isn't perfect, but I don't expect a lot of objects to
834	* to have move_allow right now.	769	* have move_allow right now.
835	*/	770	*/
836	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	771	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
837	update_now=1;	772	m.invalidate ();
838	if ((move_slow | op->move_slow) != move_slow) update_now=1;	773	#else
		774	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		775	m.invalidate ();
		776	#endif
839	}	777	}
840	/* if the object is being removed, we can't make intelligent	778	/* if the object is being removed, we can't make intelligent
841	* decisions, because remove_ob can't really pass the object	779	* decisions, because remove_ob can't really pass the object
842	* that is being removed.	780	* that is being removed.
843	*/	781	*/
844	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	782	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
845	update_now=1;	783	m.invalidate ();
846	} else if (action == UP_OBJ_FACE) {	784	else if (action == UP_OBJ_FACE)
847	/* Nothing to do for that case */	785	m.update_up (); // nothing to do for that case, except copy up
848	}
849	else {	786	else
850	LOG(llevError,"update_object called with invalid action: %d\n", action);	787	LOG (llevError, "update_object called with invalid action: %d\n", action);
851	}
852		788
853	if (update_now) {
854	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
855	update_position(op->map, op->x, op->y);
856	}
857
858	if(op->more!=NULL)	789	if (op->more)
859	update_object(op->more, action);	790	update_object (op->more, action);
860	}	791	}
861		792
		793	object::object ()
		794	{
		795	this->set_flag (FLAG_REMOVED);
862		796
863	/*	797	//expmul = 1.0; declared const for the time being
864	* free_object() frees everything allocated by an object, removes	798	face = blank_face;
865	* it from the list of used objects, and puts it on the list of	799	material = MATERIAL_NULL;
866	* free objects. The IS_FREED() flag is set in the object.	800	}
867	* The object must have been removed by remove_ob() first for	801
868	* this function to succeed.	802	object::~object ()
		803	{
		804	unlink ();
		805
		806	kv.clear ();
		807	}
		808
		809	void object::link ()
		810	{
		811	assert (!index);//D
		812	uuid = UUID::gen ();
		813
		814	refcnt_inc ();
		815	objects.insert (this);
		816
		817	++create_count;
		818
		819	}
		820
		821	void object::unlink ()
		822	{
		823	if (!index)
		824	return;
		825
		826	++destroy_count;
		827
		828	objects.erase (this);
		829	refcnt_dec ();
		830	}
		831
		832	void
		833	object::activate ()
		834	{
		835	/* If already on active list, don't do anything */
		836	if (active)
		837	return;
		838
		839	if (has_active_speed ())
		840	{
		841	if (flag [FLAG_FREED])
		842	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
		843
		844	actives.insert (this);
		845	}
		846	}
		847
		848	void
		849	object::activate_recursive ()
		850	{
		851	activate ();
		852
		853	for (object *op = inv; op; op = op->below)
		854	op->activate_recursive ();
		855	}
		856
		857	/* This function removes object 'op' from the list of active
		858	* objects.
		859	* This should only be used for style maps or other such
		860	* reference maps where you don't want an object that isn't
		861	* in play chewing up cpu time getting processed.
		862	* The reverse of this is to call update_ob_speed, which
		863	* will do the right thing based on the speed of the object.
869	*	864	*/
870	* If free_inventory is set, free inventory as well. Else drop items in	865	void
871	* inventory to the ground.	866	object::deactivate ()
		867	{
		868	/* If not on the active list, nothing needs to be done */
		869	if (!active)
		870	return;
		871
		872	actives.erase (this);
		873	}
		874
		875	void
		876	object::deactivate_recursive ()
		877	{
		878	for (object *op = inv; op; op = op->below)
		879	op->deactivate_recursive ();
		880
		881	deactivate ();
		882	}
		883
		884	void
		885	object::set_flag_inv (int flag, int value)
		886	{
		887	for (object *op = inv; op; op = op->below)
		888	{
		889	op->flag [flag] = value;
		890	op->set_flag_inv (flag, value);
		891	}
		892	}
		893
		894	/*
		895	* Remove and free all objects in the inventory of the given object.
		896	* object.c ?
		897	*/
		898	void
		899	object::destroy_inv (bool drop_to_ground)
		900	{
		901	// need to check first, because the checks below might segfault
		902	// as we might be on an invalid mapspace and crossfire code
		903	// is too buggy to ensure that the inventory is empty.
		904	// corollary: if you create arrows etc. with stuff in its inventory,
		905	// cf will crash below with off-map x and y
		906	if (!inv)
		907	return;
		908
		909	/* Only if the space blocks everything do we not process -
		910	* if some form of movement is allowed, let objects
		911	* drop on that space.
872	*/	912	*/
		913	if (!drop_to_ground
		914	|| !map
		915	|| !map->linkable ()
		916	|| map->no_drop
		917	|| ms ().move_block == MOVE_ALL)
		918	{
		919	while (inv)
		920	inv->destroy ();
		921	}
		922	else
		923	{ /* Put objects in inventory onto this space */
		924	while (inv)
		925	{
		926	object *op = inv;
873		927
874	void	928	if (op->flag [FLAG_STARTEQUIP]
875	free_object (object * ob)	929	|| op->flag [FLAG_NO_DROP]
876	{	930	|| op->type == RUNE
877	free_object2 (ob, 0);	931	|| op->type == TRAP
		932	|| op->flag [FLAG_IS_A_TEMPLATE]
		933	|| op->flag [FLAG_DESTROY_ON_DEATH])
		934	op->destroy ();
		935	else
		936	map->insert (op, x, y);
		937	}
		938	}
878	}	939	}
879		940
		941	/*
		942	* Remove and free all objects in the inventory of the given object.
		943	* Unlike destroy_inv, this assumes the *this is destroyed as well
		944	* well, so we can (and have to!) take shortcuts.
		945	*/
880	void	946	void
881	free_object2 (object * ob, int free_inventory)	947	object::destroy_inv_fast ()
882	{	948	{
		949	while (object *op = inv)
		950	{
		951	// remove from object the fast way
		952	op->flag [FLAG_REMOVED] = true;
		953	op->env = 0;
		954	if ((inv = inv->below))
		955	inv->above = 0;
		956
		957	// then destroy
		958	op->destroy ();
		959	}
		960	}
		961
		962	void
		963	object::freelist_free (int count)
		964	{
		965	while (count-- && freelist)
		966	{
		967	freelist_item *next = freelist->next;
		968	// count is being "destroyed"
		969
		970	sfree ((char *)freelist, sizeof (object));
		971
		972	freelist = next;
		973	--free_count;
		974	}
		975	}
		976
		977	object *
		978	object::create ()
		979	{
883	object *tmp, *op;	980	object *op;
884		981
885	if (!QUERY_FLAG (ob, FLAG_REMOVED))	982	if (freelist)
886	{
887	LOG (llevDebug, "Free object called with non removed object\n");
888	dump_object (ob);
889	#ifdef MANY_CORES
890	abort ();
891	#endif
892	}	983	{
		984	freelist_item li = *freelist;
		985	memset (freelist, 0, sizeof (object));
893		986
894	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	987	op = new (freelist) object;
		988	op->count = li.count;
		989
		990	freelist = li.next;
		991	--free_count;
895	{	992	}
896	LOG (llevMonster, "Warning: tried to free friendly object.\n");	993	else
		994	{
		995	void *ni = salloc0<char> (sizeof (object));
		996
		997	op = new(ni) object;
		998
		999	op->count = ++object_count;
		1000	}
		1001
		1002	op->link ();
		1003
		1004	return op;
		1005	}
		1006
		1007	void
		1008	object::do_delete ()
		1009	{
		1010	uint32_t count = this->count;
		1011
		1012	this->~object ();
		1013
		1014	freelist_item *li = (freelist_item *)this;
		1015	li->next = freelist;
		1016	li->count = count;
		1017
		1018	freelist = li;
		1019	++free_count;
		1020	}
		1021
		1022	void
		1023	object::do_destroy ()
		1024	{
		1025	if (flag [FLAG_IS_LINKED])
		1026	remove_link ();
		1027
		1028	if (flag [FLAG_FRIENDLY])
897	remove_friendly_object (ob);	1029	remove_friendly_object (this);
		1030
		1031	remove ();
		1032
		1033	attachable::do_destroy ();
		1034
		1035	deactivate ();
		1036	unlink ();
		1037
		1038	flag [FLAG_FREED] = 1;
		1039
		1040	// hack to ensure that freed objects still have a valid map
		1041	map = &freed_map;
		1042	x = 1;
		1043	y = 1;
		1044
		1045	if (more)
898	}	1046	{
899		1047	more->destroy ();
900	if (QUERY_FLAG (ob, FLAG_FREED))	1048	more = 0;
901	{	1049	}
902	dump_object (ob);	1050
903	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	1051	head = 0;
		1052
		1053	// clear those pointers that likely might cause circular references
		1054	owner = 0;
		1055	enemy = 0;
		1056	attacked_by = 0;
		1057	current_weapon = 0;
		1058	}
		1059
		1060	void
		1061	object::destroy ()
		1062	{
		1063	if (destroyed ())
		1064	return;
		1065
		1066	if (!is_head () && !head->destroyed ())
		1067	{
		1068	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		1069	head->destroy ();
904	return;	1070	return;
905	}	1071	}
906		1072
907	if (ob->more != NULL)	1073	destroy_inv_fast ();
908	{
909	free_object2 (ob->more, free_inventory);
910	ob->more = NULL;
911	}
912		1074
913	if (ob->inv)	1075	if (is_head ())
914	{	1076	if (sound_destroy)
915	/* Only if the space blocks everything do we not process -	1077	play_sound (sound_destroy);
916	* if some form of movement is allowed, let objects	1078	else if (flag [FLAG_MONSTER])
917	* drop on that space.	1079	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
918	*/
919	if (free_inventory || ob->map == NULL
920	|| ob->map->in_memory != MAP_IN_MEMORY
921	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
922	{
923	op = ob->inv;
924		1080
925	while (op != NULL)	1081	attachable::destroy ();
926	{
927	tmp = op->below;
928	remove_ob (op);
929	free_object2 (op, free_inventory);
930	op = tmp;
931	}
932	}
933	else
934	{ /* Put objects in inventory onto this space */
935	op = ob->inv;
936
937	while (op != NULL)
938	{
939	tmp = op->below;
940	remove_ob (op);
941
942	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
943	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
944	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
945	free_object (op);
946	else
947	{
948	op->x = ob->x;
949	op->y = ob->y;
950	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
951	}
952
953	op = tmp;
954	}
955	}
956	}
957
958	/* Remove object from the active list */
959	ob->speed = 0;
960	update_ob_speed (ob);
961
962	SET_FLAG (ob, FLAG_FREED);
963	ob->count = 0;
964
965	/* Remove this object from the list of used objects */
966	if (ob->prev == NULL)
967	{
968	objects = ob->next;
969
970	if (objects != NULL)
971	objects->prev = NULL;
972	}
973	else
974	{
975	ob->prev->next = ob->next;
976
977	if (ob->next != NULL)
978	ob->next->prev = ob->prev;
979	}
980
981	free_key_values (ob);
982
983	/* Now link it with the free_objects list: */
984	ob->prev = 0;
985	ob->next = 0;
986
987	delete ob;
988	}	1082	}
989		1083
990	/*	1084	/* op->remove ():
991	* sub_weight() recursively (outwards) subtracts a number from the
992	* weight of an object (and what is carried by it's environment(s)).
993	*/
994
995	void sub_weight (object *op, signed long weight) {
996	while (op != NULL) {
997	if (op->type == CONTAINER) {
998	weight=(signed long)(weight*(100-op->stats.Str)/100);
999	}
1000	op->carrying-=weight;
1001	op = op->env;
1002	}
1003	}
1004
1005	/* remove_ob(op):
1006	* This function removes the object op from the linked list of objects	1085	* This function removes the object op from the linked list of objects
1007	* which it is currently tied to. When this function is done, the	1086	* which it is currently tied to. When this function is done, the
1008	* object will have no environment. If the object previously had an	1087	* object will have no environment. If the object previously had an
1009	* environment, the x and y coordinates will be updated to	1088	* environment, the x and y coordinates will be updated to
1010	* the previous environment.	1089	* the previous environment.
1011	* Beware: This function is called from the editor as well!
1012	*/	1090	*/
		1091	void
		1092	object::do_remove ()
		1093	{
		1094	if (flag [FLAG_REMOVED])
		1095	return;
1013		1096
1014	void remove_ob(object *op) {	1097	INVOKE_OBJECT (REMOVE, this);
1015	object *tmp,*last=NULL;
1016	object *otmp;
1017	tag_t tag;
1018	int check_walk_off;
1019	mapstruct *m;
1020	sint16 x,y;
1021
1022		1098
1023	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1099	flag [FLAG_REMOVED] = true;
1024	dump_object(op);
1025	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1026		1100
1027	/* Changed it to always dump core in this case. As has been learned	1101	if (more)
1028	* in the past, trying to recover from errors almost always	1102	more->remove ();
1029	* make things worse, and this is a real error here - something
1030	* that should not happen.
1031	* Yes, if this was a mission critical app, trying to do something
1032	* to recover may make sense, but that is because failure of the app
1033	* may have other disastrous problems. Cf runs out of a script
1034	* so is easily enough restarted without any real problems.
1035	* MSW 2001-07-01
1036	*/
1037	abort();
1038	}
1039	if(op->more!=NULL)
1040	remove_ob(op->more);
1041		1103
1042	SET_FLAG(op, FLAG_REMOVED);	1104	/*
1043
1044	/*
1045	* In this case, the object to be removed is in someones	1105	* In this case, the object to be removed is in someones
1046	* inventory.	1106	* inventory.
1047	*/	1107	*/
1048	if(op->env!=NULL) {	1108	if (env)
1049	if(op->nrof)	1109	{
1050	sub_weight(op->env, op->weight*op->nrof);	1110	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
1051	else	1111	if (object *pl = visible_to ())
1052	sub_weight(op->env, op->weight+op->carrying);	1112	esrv_del_item (pl->contr, count);
		1113	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
1053		1114
1054	/* NO_FIX_PLAYER is set when a great many changes are being	1115	adjust_weight (env, total_weight (), 0);
1055	* made to players inventory. If set, avoiding the call
1056	* to save cpu time.
1057	*/
1058	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&
1059	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1060	fix_player(otmp);
1061		1116
1062	if(op->above!=NULL)	1117	object *pl = in_player ();
1063	op->above->below=op->below;
1064	else
1065	op->env->inv=op->below;
1066		1118
1067	if(op->below!=NULL)
1068	op->below->above=op->above;
1069
1070	/* we set up values so that it could be inserted into	1119	/* we set up values so that it could be inserted into
1071	* the map, but we don't actually do that - it is up	1120	* the map, but we don't actually do that - it is up
1072	* to the caller to decide what we want to do.	1121	* to the caller to decide what we want to do.
1073	*/	1122	*/
1074	op->x=op->env->x,op->y=op->env->y;	1123	map = env->map;
1075	op->map=op->env->map;	1124	x = env->x;
1076	op->above=NULL,op->below=NULL;	1125	y = env->y;
1077	op->env=NULL;
1078	return;
1079	}
1080		1126
1081	/* If we get here, we are removing it from a map */	1127	// make sure cmov optimisation is applicable
1082	if (op->map == NULL) return;	1128	*(above ? &above->below : &env->inv) = below;
		1129	*(below ? &below->above : &above ) = above; // &above is just a dummy
1083		1130
1084	x = op->x;	1131	above = 0;
1085	y = op->y;	1132	below = 0;
1086	m = get_map_from_coord(op->map, &x, &y);	1133	env = 0;
1087		1134
1088	if (!m) {	1135	if (pl && pl->is_player ())
1089	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1090	op->map->path, op->x, op->y);
1091	/* in old days, we used to set x and y to 0 and continue.
1092	* it seems if we get into this case, something is probablye
1093	* screwed up and should be fixed.
1094	*/	1136	{
1095	abort();	1137	if (expect_false (pl->contr->combat_ob == this))
1096	}
1097	if (op->map != m) {
1098	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1099	op->map->path, m->path, op->x, op->y, x, y);
1100	}
1101
1102	/* Re did the following section of code - it looks like it had
1103	* lots of logic for things we no longer care about
1104	*/
1105
1106	/* link the object above us */
1107	if (op->above)
1108	op->above->below=op->below;
1109	else
1110	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1111
1112	/* Relink the object below us, if there is one */
1113	if(op->below) {
1114	op->below->above=op->above;
1115	} else {
1116	/* Nothing below, which means we need to relink map object for this space
1117	* use translated coordinates in case some oddness with map tiling is
1118	* evident
1119	*/	1138	{
1120	if(GET_MAP_OB(m,x,y)!=op) {	1139	pl->apply (pl->contr->combat_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
1121	dump_object(op);	1140	pl->contr->combat_ob = 0;
1122	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);	1141	if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob);
1123	dump_object(GET_MAP_OB(m,x,y));	1142	}
1124	LOG(llevError,"%s\n",errmsg);	1143
		1144	if (expect_false (pl->contr->ranged_ob == this))
		1145	{
		1146	pl->apply (pl->contr->ranged_ob, AP_UNAPPLY | AP_IGNORE_CURSE);
		1147	pl->contr->ranged_ob = 0;
		1148	if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob);
		1149	}
		1150
		1151	pl->contr->queue_stats_update ();
		1152
		1153	if (expect_false (glow_radius) && pl->is_on_map ())
		1154	update_all_los (pl->map, pl->x, pl->y);
1125	}	1155	}
1126	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1156	}
		1157	else if (map)
1127	}	1158	{
1128	op->above=NULL;	1159	map->dirty = true;
1129	op->below=NULL;	1160	mapspace &ms = this->ms ();
1130		1161
1131	if (op->map->in_memory == MAP_SAVING)	1162	if (object *pl = ms.player ())
1132	return;
1133
1134	tag = op->count;
1135	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1136	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1137	/* No point updating the players look faces if he is the object
1138	* being removed.
1139	*/	1163	{
		1164	if (is_player ())
		1165	{
		1166	if (!flag [FLAG_WIZPASS])
		1167	ms.smell = ++mapspace::smellcount; // remember the smell of the player
1140		1168
1141	if(tmp->type==PLAYER && tmp!=op) {	1169	// leaving a spot always closes any open container on the ground
		1170	if (container && !container->env)
		1171	// this causes spurious floorbox updates, but it ensures
		1172	// that the CLOSE event is being sent.
		1173	close_container ();
		1174
		1175	--map->players;
		1176	map->touch ();
		1177	}
		1178	else if (pl->container_ () == this)
		1179	{
		1180	// removing a container should close it
		1181	close_container ();
		1182	}
		1183	else
		1184	esrv_del_item (pl->contr, count);
		1185	}
		1186
		1187	/* link the object above us */
		1188	// re-link, make sure compiler can easily use cmove
		1189	*(above ? &above->below : &ms.top) = below;
		1190	*(below ? &below->above : &ms.bot) = above;
		1191
		1192	above = 0;
		1193	below = 0;
		1194
		1195	ms.invalidate ();
		1196
		1197	int check_walk_off = !flag [FLAG_NO_APPLY];
		1198
		1199	if (object *pl = ms.player ())
		1200	{
		1201	if (pl->container_ () == this)
1142	/* If a container that the player is currently using somehow gets	1202	/* If a container that the player is currently using somehow gets
1143	* removed (most likely destroyed), update the player view	1203	* removed (most likely destroyed), update the player view
1144	* appropriately.	1204	* appropriately.
1145	*/	1205	*/
1146	if (tmp->container==op) {	1206	pl->close_container ();
1147	CLEAR_FLAG(op, FLAG_APPLIED);	1207
1148	tmp->container=NULL;	1208	//TODO: the floorbox prev/next might need updating
1149	}	1209	//esrv_del_item (pl->contr, count);
1150	tmp->contr->socket.update_look=1;	1210	//TODO: update floorbox to preserve ordering
		1211	if (pl->contr->ns)
		1212	pl->contr->ns->floorbox_update ();
1151	}	1213	}
		1214
		1215	if (check_walk_off)
		1216	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1217	{
		1218	above = tmp->above;
		1219
		1220	/* No point updating the players look faces if he is the object
		1221	* being removed.
		1222	*/
		1223
1152	/* See if player moving off should effect something */	1224	/* See if object moving off should effect something */
1153	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1225	if ((move_type & tmp->move_off)
1154	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1226	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1155
1156	move_apply(tmp, op, NULL);	1227	move_apply (tmp, this, 0);
1157	if (was_destroyed (op, tag)) {
1158	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1159	"leaving object\n", &tmp->name, &tmp->arch->name);
1160	}	1228	}
1161	}
1162		1229
1163	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1230	if (affects_los ())
1164
1165	if(tmp->above == tmp)
1166	tmp->above = NULL;
1167	last=tmp;
1168	}
1169	/* last == NULL of there are no objects on this space */
1170	if (last==NULL) {
1171	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1172	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1173	* those out anyways, and if there are any flags set right now, they won't
1174	* be correct anyways.
1175	*/
1176	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1177	update_position(op->map, op->x, op->y);
1178	}
1179	else
1180	update_object(last, UP_OBJ_REMOVE);
1181
1182	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1183	update_all_los(op->map, op->x, op->y);	1231	update_all_los (map, x, y);
1184		1232	}
1185	}	1233	}
1186		1234
1187	/*	1235	/*
1188	* merge_ob(op,top):	1236	* merge_ob(op,top):
1189	*	1237	*
1190	* This function goes through all objects below and including top, and	1238	* This function goes through all objects below and including top, and
1191	* merges op to the first matching object.	1239	* merges op to the first matching object.
1192	* If top is NULL, it is calculated.	1240	* If top is NULL, it is calculated.
1193	* Returns pointer to object if it succeded in the merge, otherwise NULL	1241	* Returns pointer to object if it succeded in the merge, otherwise NULL
1194	*/	1242	*/
1195		1243	object *
1196	object *merge_ob(object *op, object *top) {	1244	merge_ob (object *op, object *top)
		1245	{
1197	if(!op->nrof)	1246	if (!op->nrof)
1198	return 0;	1247	return 0;
1199	if(top==NULL)	1248
		1249	if (!top)
1200	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1250	for (top = op; top && top->above; top = top->above)
		1251	;
		1252
1201	for(;top!=NULL;top=top->below) {	1253	for (; top; top = top->below)
1202	if(top==op)	1254	if (object::can_merge (op, top))
1203	continue;
1204	if (CAN_MERGE(op,top))
1205	{	1255	{
1206	top->nrof+=op->nrof;	1256	top->nrof += op->nrof;
1207	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1257
1208	op->weight = 0; /* Don't want any adjustements now */	1258	if (object *pl = top->visible_to ())
1209	remove_ob(op);	1259	esrv_update_item (UPD_NROF, pl, top);
1210	free_object(op);	1260
		1261	op->weight = 0; // cancel the addition above
		1262	op->carrying = 0; // must be 0 already
		1263
		1264	op->destroy ();
		1265
1211	return top;	1266	return top;
1212	}	1267	}
1213	}	1268
1214	return NULL;	1269	return 0;
1215	}	1270	}
1216		1271
		1272	void
		1273	object::expand_tail ()
		1274	{
		1275	if (more)
		1276	return;
		1277
		1278	object *prev = this;
		1279
		1280	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1281	{
		1282	object *op = at->instance ();
		1283
		1284	op->name = name;
		1285	op->name_pl = name_pl;
		1286	op->title = title;
		1287
		1288	op->head = this;
		1289	prev->more = op;
		1290
		1291	prev = op;
		1292	}
		1293	}
		1294
1217	/*	1295	/*
1218	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1296	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1219	* job preparing multi-part monsters	1297	* job preparing multi-part monsters.
1220	*/	1298	*/
		1299	object *
1221	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1300	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1222	object* tmp;	1301	{
1223	if (op->head)	1302	op->remove ();
1224	op=op->head;	1303
1225	for (tmp=op;tmp;tmp=tmp->more){	1304	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1305	{
1226	tmp->x=x+tmp->arch->clone.x;	1306	tmp->x = x + tmp->arch->x;
1227	tmp->y=y+tmp->arch->clone.y;	1307	tmp->y = y + tmp->arch->y;
1228	}	1308	}
		1309
1229	return insert_ob_in_map (op, m, originator, flag);	1310	return insert_ob_in_map (op, m, originator, flag);
1230	}	1311	}
1231		1312
1232	/*	1313	/*
1233	* insert_ob_in_map (op, map, originator, flag):	1314	* insert_ob_in_map (op, map, originator, flag):
1234	* This function inserts the object in the two-way linked list	1315	* This function inserts the object in the two-way linked list
…		…
1244	* Passing 0 for flag gives proper default values, so flag really only needs	1325	* Passing 0 for flag gives proper default values, so flag really only needs
1245	* to be set if special handling is needed.	1326	* to be set if special handling is needed.
1246	*	1327	*
1247	* Return value:	1328	* Return value:
1248	* new object if 'op' was merged with other object	1329	* new object if 'op' was merged with other object
1249	* NULL if 'op' was destroyed	1330	* NULL if there was an error (destroyed, blocked etc.)
1250	* just 'op' otherwise	1331	* just 'op' otherwise
1251	*/	1332	*/
1252		1333	object *
1253	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1334	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1254	{	1335	{
1255	object *tmp, *top, *floor=NULL;	1336	op->remove ();
1256	sint16 x,y;
1257		1337
1258	if (QUERY_FLAG (op, FLAG_FREED)) {	1338	if (m == &freed_map)//D TODO: remove soon
1259	LOG (llevError, "Trying to insert freed object!\n");	1339	{//D
1260	return NULL;	1340	LOG (llevError | logBacktrace, "tries to insert object on freed objects map: %s", op->debug_desc ());//D
		1341	}//D
		1342
		1343	/* Ideally, the caller figures this out. However, it complicates a lot
		1344	* of areas of callers (eg, anything that uses find_free_spot would now
		1345	* need extra work
		1346	*/
		1347	maptile *newmap = m;
		1348	if (!xy_normalise (newmap, op->x, op->y))
1261	}	1349	{
1262	if(m==NULL) {	1350	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
1263	dump_object(op);
1264	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1265	return op;	1351	return 0;
1266	}	1352	}
1267	if(out_of_map(m,op->x,op->y)) {	1353
1268	dump_object(op);	1354	if (object *more = op->more)
1269	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1355	if (!insert_ob_in_map (more, m, originator, flag))
1270	#ifdef MANY_CORES
1271	/* Better to catch this here, as otherwise the next use of this object
1272	* is likely to cause a crash. Better to find out where it is getting
1273	* improperly inserted.
1274	*/
1275	abort();
1276	#endif
1277	return op;	1356	return 0;
1278	}
1279	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1280	dump_object(op);
1281	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1282	return op;
1283	}
1284	if(op->more!=NULL) {
1285	/* The part may be on a different map. */
1286		1357
1287	object *more = op->more;	1358	op->flag [FLAG_REMOVED] = false;
		1359	op->env = 0;
		1360	op->map = newmap;
1288		1361
1289	/* We really need the caller to normalize coordinates - if	1362	mapspace &ms = op->ms ();
1290	* we set the map, that doesn't work if the location is within	1363
1291	* a map and this is straddling an edge. So only if coordinate	1364	/* this has to be done after we translate the coordinates.
1292	* is clear wrong do we normalize it.	1365	*/
		1366	if (op->nrof && !(flag & INS_NO_MERGE))
		1367	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1368	if (object::can_merge (op, tmp))
1293	*/	1369	{
1294	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1370	// TODO: we actually want to update tmp, not op,
1295	more->map = get_map_from_coord(m, &more->x, &more->y);	1371	// but some caller surely breaks when we return tmp
1296	} else if (!more->map) {	1372	// from here :/
1297	/* For backwards compatibility - when not dealing with tiled maps,	1373	op->nrof += tmp->nrof;
1298	* more->map should always point to the parent.	1374	tmp->destroy ();
1299	*/
1300	more->map = m;
1301	}	1375	}
1302		1376
1303	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1377	op->clr_flag (FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1304	if ( ! op->head)	1378	op->clr_flag (FLAG_INV_LOCKED);
1305	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1379
1306	return NULL;	1380	if (!op->flag [FLAG_ALIVE])
		1381	op->clr_flag (FLAG_NO_STEAL);
		1382
		1383	if (flag & INS_BELOW_ORIGINATOR)
		1384	{
		1385	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1386	{
		1387	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1388	abort ();
1307	}	1389	}
		1390
		1391	if (!originator->is_on_map ())
		1392	{
		1393	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1394	op->debug_desc (), originator->debug_desc ());
		1395	abort ();
		1396	}
		1397
		1398	op->above = originator;
		1399	op->below = originator->below;
		1400	originator->below = op;
		1401
		1402	*(op->below ? &op->below->above : &ms.bot) = op;
		1403	}
		1404	else
1308	}	1405	{
1309	CLEAR_FLAG(op,FLAG_REMOVED);	1406	object *floor = 0;
		1407	object *top = ms.top;
1310		1408
1311	/* Ideally, the caller figures this out. However, it complicates a lot	1409	/* If there are other objects, then */
1312	* of areas of callers (eg, anything that uses find_free_spot would now	1410	if (top)
1313	* need extra work	1411	{
1314	*/	1412	/*
1315	op->map=get_map_from_coord(m, &op->x, &op->y);	1413	* If there are multiple objects on this space, we do some trickier handling.
1316	x = op->x;	1414	* We've already dealt with merging if appropriate.
1317	y = op->y;	1415	* Generally, we want to put the new object on top. But if
		1416	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1417	* floor, we want to insert above that and no further.
		1418	* Also, if there are spell objects on this space, we stop processing
		1419	* once we get to them. This reduces the need to traverse over all of
		1420	* them when adding another one - this saves quite a bit of cpu time
		1421	* when lots of spells are cast in one area. Currently, it is presumed
		1422	* that flying non pickable objects are spell objects.
		1423	*/
		1424	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1425	{
		1426	if (tmp->flag [FLAG_IS_FLOOR] || tmp->flag [FLAG_OVERLAY_FLOOR])
		1427	floor = tmp;
1318		1428
1319	/* this has to be done after we translate the coordinates.	1429	if (tmp->flag [FLAG_NO_PICK] && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !tmp->flag [FLAG_IS_FLOOR])
1320	*/	1430	{
1321	if(op->nrof && !(flag & INS_NO_MERGE)) {	1431	/* We insert above top, so we want this object below this */
1322	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1432	top = tmp->below;
1323	if (CAN_MERGE(op,tmp)) {	1433	break;
1324	op->nrof+=tmp->nrof;	1434	}
1325	remove_ob(tmp);	1435
1326	free_object(tmp);	1436	top = tmp;
1327	}	1437	}
1328	}
1329		1438
1330	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1439	/* We let update_position deal with figuring out what the space
1331	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1440	* looks like instead of lots of conditions here.
1332	if (!QUERY_FLAG(op, FLAG_ALIVE))	1441	* makes things faster, and effectively the same result.
1333	CLEAR_FLAG(op, FLAG_NO_STEAL);	1442	*/
1334		1443
1335	if (flag & INS_BELOW_ORIGINATOR) {	1444	/* Have object 'fall below' other objects that block view.
1336	if (originator->map != op->map || originator->x != op->x ||	1445	* Unless those objects are exits.
1337	originator->y != op->y) {	1446	* If INS_ON_TOP is used, don't do this processing
1338	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1447	* Need to find the object that in fact blocks view, otherwise
1339	abort();	1448	* stacking is a bit odd.
		1449	*/
		1450	if (!(flag & INS_ON_TOP)
		1451	&& ms.flags () & P_BLOCKSVIEW
		1452	&& (op->face && !faces [op->face].visibility))
		1453	{
		1454	object *last;
		1455
		1456	for (last = top; last != floor; last = last->below)
		1457	if (last->flag [FLAG_BLOCKSVIEW] && (last->type != EXIT))
		1458	break;
		1459
		1460	/* Check to see if we found the object that blocks view,
		1461	* and make sure we have a below pointer for it so that
		1462	* we can get inserted below this one, which requires we
		1463	* set top to the object below us.
		1464	*/
		1465	if (last && last->below && last != floor)
		1466	top = last->below;
		1467	}
		1468	} /* If objects on this space */
		1469
		1470	if (flag & INS_ABOVE_FLOOR_ONLY)
		1471	top = floor;
		1472
		1473	// insert object above top, or bottom-most if top = 0
		1474	if (!top)
		1475	{
		1476	op->below = 0;
		1477	op->above = ms.bot;
		1478	ms.bot = op;
		1479
		1480	*(op->above ? &op->above->below : &ms.top) = op;
1340	}	1481	}
1341	op->above = originator;
1342	op->below = originator->below;
1343	if (op->below) op->below->above = op;
1344	else SET_MAP_OB(op->map, op->x, op->y, op);
1345	/* since *below* originator, no need to update top */
1346	originator->below = op;
1347	} else {	1482	else
1348	/* If there are other objects, then */
1349	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1350	object *last=NULL;
1351	/*
1352	* If there are multiple objects on this space, we do some trickier handling.
1353	* We've already dealt with merging if appropriate.
1354	* Generally, we want to put the new object on top. But if
1355	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1356	* floor, we want to insert above that and no further.
1357	* Also, if there are spell objects on this space, we stop processing
1358	* once we get to them. This reduces the need to traverse over all of
1359	* them when adding another one - this saves quite a bit of cpu time
1360	* when lots of spells are cast in one area. Currently, it is presumed
1361	* that flying non pickable objects are spell objects.
1362	*/
1363
1364	while (top != NULL) {
1365	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1366	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1367	if (QUERY_FLAG(top, FLAG_NO_PICK)
1368	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1369	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1370	{
1371	/* We insert above top, so we want this object below this */
1372	top=top->below;
1373	break;
1374	}
1375	last = top;
1376	top = top->above;
1377	}
1378	/* Don't want top to be NULL, so set it to the last valid object */
1379	top = last;
1380
1381	/* We let update_position deal with figuring out what the space
1382	* looks like instead of lots of conditions here.
1383	* makes things faster, and effectively the same result.
1384	*/
1385
1386	/* Have object 'fall below' other objects that block view.
1387	* Unless those objects are exits, type 66
1388	* If INS_ON_TOP is used, don't do this processing
1389	* Need to find the object that in fact blocks view, otherwise
1390	* stacking is a bit odd.
1391	*/
1392	if (!(flag & INS_ON_TOP) &&
1393	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1394	(op->face && !op->face->visibility)) {
1395	for (last=top; last != floor; last=last->below)
1396	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1397	/* Check to see if we found the object that blocks view,
1398	* and make sure we have a below pointer for it so that
1399	* we can get inserted below this one, which requires we
1400	* set top to the object below us.
1401	*/
1402	if (last && last->below && last != floor) top=last->below;
1403	}
1404	} /* If objects on this space */
1405	if (flag & INS_MAP_LOAD)
1406	top = GET_MAP_TOP(op->map,op->x,op->y);
1407	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1408
1409	/* Top is the object that our object (op) is going to get inserted above.
1410	*/	1483	{
1411
1412	/* First object on this space */
1413	if (!top) {
1414	op->above = GET_MAP_OB(op->map, op->x, op->y);
1415	if (op->above) op->above->below = op;
1416	op->below = NULL;
1417	SET_MAP_OB(op->map, op->x, op->y, op);
1418	} else { /* get inserted into the stack above top */
1419	op->above = top->above;	1484	op->above = top->above;
1420	if (op->above) op->above->below = op;
1421	op->below = top;
1422	top->above = op;	1485	top->above = op;
		1486
		1487	op->below = top;
		1488	*(op->above ? &op->above->below : &ms.top) = op;
1423	}	1489	}
1424	if (op->above==NULL)	1490	}
1425	SET_MAP_TOP(op->map,op->x, op->y, op);
1426	} /* else not INS_BELOW_ORIGINATOR */
1427		1491
1428	if(op->type==PLAYER)	1492	if (op->is_player ())
		1493	{
1429	op->contr->do_los=1;	1494	op->contr->do_los = 1;
		1495	++op->map->players;
		1496	op->map->touch ();
		1497	}
1430		1498
1431	/* If we have a floor, we know the player, if any, will be above	1499	op->map->dirty = true;
1432	* it, so save a few ticks and start from there.
1433	*/
1434	if (!(flag & INS_MAP_LOAD))
1435	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1436	if (tmp->type == PLAYER)
1437	tmp->contr->socket.update_look=1;
1438	}
1439		1500
		1501	if (object *pl = ms.player ())
		1502	//TODO: the floorbox prev/next might need updating
		1503	//esrv_send_item (pl, op);
		1504	//TODO: update floorbox to preserve ordering
		1505	if (pl->contr->ns)
		1506	pl->contr->ns->floorbox_update ();
		1507
1440	/* If this object glows, it may affect lighting conditions that are	1508	/* If this object glows, it may affect lighting conditions that are
1441	* visible to others on this map. But update_all_los is really	1509	* visible to others on this map. But update_all_los is really
1442	* an inefficient way to do this, as it means los for all players	1510	* an inefficient way to do this, as it means los for all players
1443	* on the map will get recalculated. The players could very well	1511	* on the map will get recalculated. The players could very well
1444	* be far away from this change and not affected in any way -	1512	* be far away from this change and not affected in any way -
1445	* this should get redone to only look for players within range,	1513	* this should get redone to only look for players within range,
1446	* or just updating the P_NEED_UPDATE for spaces within this area	1514	* or just updating the P_UPTODATE for spaces within this area
1447	* of effect may be sufficient.	1515	* of effect may be sufficient.
1448	*/	1516	*/
1449	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1517	if (op->affects_los ())
		1518	{
		1519	op->ms ().invalidate ();
1450	update_all_los(op->map, op->x, op->y);	1520	update_all_los (op->map, op->x, op->y);
		1521	}
1451		1522
1452
1453	/* updates flags (blocked, alive, no magic, etc) for this map space */	1523	/* updates flags (blocked, alive, no magic, etc) for this map space */
1454	update_object(op,UP_OBJ_INSERT);	1524	update_object (op, UP_OBJ_INSERT);
1455		1525
		1526	INVOKE_OBJECT (INSERT, op);
1456		1527
1457	/* Don't know if moving this to the end will break anything. However,	1528	/* Don't know if moving this to the end will break anything. However,
1458	* we want to have update_look set above before calling this.	1529	* we want to have floorbox_update called before calling this.
1459	*	1530	*
1460	* check_move_on() must be after this because code called from	1531	* check_move_on() must be after this because code called from
1461	* check_move_on() depends on correct map flags (so functions like	1532	* check_move_on() depends on correct map flags (so functions like
1462	* blocked() and wall() work properly), and these flags are updated by	1533	* blocked() and wall() work properly), and these flags are updated by
1463	* update_object().	1534	* update_object().
1464	*/	1535	*/
1465		1536
1466	/* if this is not the head or flag has been passed, don't check walk on status */	1537	/* if this is not the head or flag has been passed, don't check walk on status */
1467
1468	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1538	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1539	{
1469	if (check_move_on(op, originator))	1540	if (check_move_on (op, originator, flag))
1470	return NULL;	1541	return 0;
1471		1542
1472	/* If we are a multi part object, lets work our way through the check	1543	/* If we are a multi part object, let's work our way through the check
1473	* walk on's.	1544	* walk on's.
1474	*/	1545	*/
1475	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1546	for (object *tmp = op->more; tmp; tmp = tmp->more)
1476	if (check_move_on (tmp, originator))	1547	if (check_move_on (tmp, originator, flag))
1477	return NULL;	1548	return 0;
1478	}	1549	}
		1550
1479	return op;	1551	return op;
1480	}	1552	}
1481		1553
1482	/* this function inserts an object in the map, but if it	1554	/* this function inserts an object in the map, but if it
1483	* finds an object of its own type, it'll remove that one first.	1555	* finds an object of its own type, it'll remove that one first.
1484	* op is the object to insert it under: supplies x and the map.	1556	* op is the object to insert it under: supplies x and the map.
1485	*/	1557	*/
1486	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1558	void
1487	object *tmp;	1559	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1488	object *tmp1;	1560	{
1489
1490	/* first search for itself and remove any old instances */	1561	/* first search for itself and remove any old instances */
1491		1562
1492	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1563	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1493	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1564	if (tmp->arch->archname == archname) /* same archetype */
1494	remove_ob(tmp);	1565	tmp->destroy ();
1495	free_object(tmp);
1496	}
1497	}
1498		1566
1499	tmp1=arch_to_object(find_archetype(arch_string));	1567	object *tmp = archetype::find (archname)->instance ();
1500		1568
1501		1569	tmp->x = op->x;
1502	tmp1->x = op->x; tmp1->y = op->y;	1570	tmp->y = op->y;
		1571
1503	insert_ob_in_map(tmp1,op->map,op,0);	1572	insert_ob_in_map (tmp, op->map, op, 0);
1504	}	1573	}
1505		1574
1506	/*	1575	object *
1507	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1576	object::insert_at (object *where, object *originator, int flags)
1508	* is returned contains nr objects, and the remaining parts contains	1577	{
1509	* the rest (or is removed and freed if that number is 0).	1578	if (where->env)
1510	* On failure, NULL is returned, and the reason put into the	1579	return where->env->insert (this);
1511	* global static errmsg array.	1580	else
1512	*/	1581	return where->map->insert (this, where->x, where->y, originator, flags);
		1582	}
1513		1583
1514	object *get_split_ob(object *orig_ob, uint32 nr) {	1584	// check whether we can put this into the map, respect max_volume, max_items
1515	object *newob;	1585	bool
1516	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1586	object::can_drop_at (maptile *m, int x, int y, object *originator)
		1587	{
		1588	mapspace &ms = m->at (x, y);
1517		1589
1518	if(orig_ob->nrof<nr) {	1590	int items = ms.items ();
1519	sprintf(errmsg,"There are only %d %ss.",
1520	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1521	return NULL;
1522	}
1523	newob = object_create_clone(orig_ob);
1524	if((orig_ob->nrof-=nr)<1) {
1525	if ( ! is_removed)
1526	remove_ob(orig_ob);
1527	free_object2(orig_ob, 1);
1528	}
1529	else if ( ! is_removed) {
1530	if(orig_ob->env!=NULL)
1531	sub_weight (orig_ob->env,orig_ob->weight*nr);
1532	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1533	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1534	LOG(llevDebug,
1535	"Error, Tried to split object whose map is not in memory.\n");
1536	return NULL;
1537	}
1538	}
1539	newob->nrof=nr;
1540		1591
		1592	if (!items // testing !items ensures we can drop at least one item
		1593	|| (items < m->max_items
		1594	&& ms.volume () < m->max_volume))
1541	return newob;	1595	return true;
1542	}
1543		1596
		1597	if (originator)
		1598	originator->failmsgf (
		1599	"No matter how hard you try, you just cannot put the %s here! H<Try to remove some items from the floor first.>",
		1600	query_name ()
		1601	);
		1602
		1603	return false;
		1604	}
		1605
1544	/*	1606	/*
1545	* decrease_ob_nr(object, number) decreases a specified number from	1607	* decrease(object, number) decreases a specified number from
1546	* the amount of an object. If the amount reaches 0, the object	1608	* the amount of an object. If the amount reaches 0, the object
1547	* is subsequently removed and freed.	1609	* is subsequently removed and freed.
1548	*	1610	*
1549	* Return value: 'op' if something is left, NULL if the amount reached 0	1611	* Return value: 'op' if something is left, NULL if the amount reached 0
1550	*/	1612	*/
1551		1613	bool
1552	object *decrease_ob_nr (object *op, uint32 i)	1614	object::decrease (sint32 nr)
1553	{	1615	{
1554	object *tmp;	1616	if (!nr)
1555	player *pl;	1617	return true;
1556		1618
1557	if (i == 0) /* objects with op->nrof require this check */	1619	nr = min (nr, nrof);
		1620
		1621	if (nrof > nr)
		1622	{
		1623	weight_t oweight = total_weight ();
		1624
		1625	nrof -= nr;
		1626
		1627	if (object *pl = visible_to ())
		1628	esrv_update_item (UPD_NROF, pl, this);
		1629
		1630	adjust_weight (env, oweight, total_weight ());
		1631
		1632	return true;
		1633	}
		1634	else
		1635	{
		1636	destroy ();
		1637	return false;
		1638	}
		1639	}
		1640
		1641	/*
		1642	* split(ob,nr) splits up ob into two parts. The part which
		1643	* is returned contains nr objects, and the remaining parts contains
		1644	* the rest (or is removed and returned if that number is 0).
		1645	* On failure, NULL is returned.
		1646	*/
		1647	object *
		1648	object::split (sint32 nr)
		1649	{
		1650	int have = number_of ();
		1651
		1652	if (have < nr)
		1653	return 0;
		1654	else if (have == nr)
		1655	{
		1656	remove ();
		1657	return this;
		1658	}
		1659	else
		1660	{
		1661	decrease (nr);
		1662
		1663	object *op = deep_clone ();
		1664	op->nrof = nr;
1558	return op;	1665	return op;
1559
1560	if (i > op->nrof)
1561	i = op->nrof;
1562
1563	if (QUERY_FLAG (op, FLAG_REMOVED))
1564	{	1666	}
1565	op->nrof -= i;	1667	}
		1668
		1669	object *
		1670	insert_ob_in_ob (object *op, object *where)
		1671	{
		1672	if (!where)
1566	}	1673	{
1567	else if (op->env != NULL)	1674	char *dump = dump_object (op);
1568	{	1675	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1569	/* is this object in the players inventory, or sub container	1676	free (dump);
1570	* therein?
1571	*/
1572	tmp = is_player_inv (op->env);
1573	/* nope. Is this a container the player has opened?
1574	* If so, set tmp to that player.
1575	* IMO, searching through all the players will mostly
1576	* likely be quicker than following op->env to the map,
1577	* and then searching the map for a player.
1578	*/
1579	if (!tmp) {
1580	for (pl=first_player; pl; pl=pl->next)
1581	if (pl->ob->container == op->env) break;
1582	if (pl) tmp=pl->ob;
1583	else tmp=NULL;
1584	}
1585
1586	if (i < op->nrof) {
1587	sub_weight (op->env, op->weight * i);
1588	op->nrof -= i;
1589	if (tmp) {
1590	esrv_send_item(tmp, op);
1591	}
1592	} else {
1593	remove_ob (op);
1594	op->nrof = 0;
1595	if (tmp) {
1596	esrv_del_item(tmp->contr, op->count);
1597	}
1598	}
1599	}
1600	else
1601	{
1602	object *above = op->above;
1603
1604	if (i < op->nrof) {
1605	op->nrof -= i;
1606	} else {
1607	remove_ob (op);
1608	op->nrof = 0;
1609	}
1610	/* Since we just removed op, op->above is null */
1611	for (tmp = above; tmp != NULL; tmp = tmp->above)
1612	if (tmp->type == PLAYER) {
1613	if (op->nrof)
1614	esrv_send_item(tmp, op);
1615	else
1616	esrv_del_item(tmp->contr, op->count);
1617	}
1618	}
1619
1620	if (op->nrof) {
1621	return op;	1677	return op;
1622	} else {	1678	}
1623	free_object (op);	1679
1624	return NULL;	1680	if (where->head_ () != where)
1625	}	1681	{
1626	}	1682	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1627		1683	where = where->head;
1628	/*
1629	* add_weight(object, weight) adds the specified weight to an object,
1630	* and also updates how much the environment(s) is/are carrying.
1631	*/
1632
1633	void add_weight (object *op, signed long weight) {
1634	while (op!=NULL) {
1635	if (op->type == CONTAINER) {
1636	weight=(signed long)(weight*(100-op->stats.Str)/100);
1637	}
1638	op->carrying+=weight;
1639	op=op->env;
1640	}	1684	}
1641	}
1642		1685
		1686	return where->insert (op);
		1687	}
		1688
1643	/*	1689	/*
1644	* insert_ob_in_ob(op,environment):	1690	* env->insert (op)
1645	* This function inserts the object op in the linked list	1691	* This function inserts the object op in the linked list
1646	* inside the object environment.	1692	* inside the object environment.
1647	*	1693	*
1648	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1649	* the inventory at the last position or next to other objects of the same
1650	* type.
1651	* Frank: Now sorted by type, archetype and magic!
1652	*
1653	* The function returns now pointer to inserted item, and return value can	1694	* The function returns now pointer to inserted item, and return value can
1654	* be != op, if items are merged. -Tero	1695	* be != op, if items are merged. -Tero
1655	*/	1696	*/
1656		1697	object *
1657	object *insert_ob_in_ob(object *op,object *where) {	1698	object::insert (object *op)
1658	object *tmp, *otmp;	1699	{
1659
1660	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1661	dump_object(op);
1662	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1663	return op;
1664	}
1665	if(where==NULL) {
1666	dump_object(op);
1667	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1668	return op;
1669	}
1670	if (where->head) {
1671	LOG(llevDebug,
1672	"Warning: Tried to insert object wrong part of multipart object.\n");
1673	where = where->head;
1674	}
1675	if (op->more) {	1700	if (op->more)
		1701	{
1676	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1702	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1677	&op->name, op->count);
1678	return op;	1703	return op;
1679	}	1704	}
1680	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1705
1681	CLEAR_FLAG(op, FLAG_REMOVED);	1706	op->remove ();
		1707
		1708	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1709
1682	if(op->nrof) {	1710	if (op->nrof)
1683	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1711	for (object *tmp = inv; tmp; tmp = tmp->below)
1684	if ( CAN_MERGE(tmp,op) ) {	1712	if (object::can_merge (tmp, op))
		1713	{
1685	/* return the original object and remove inserted object	1714	/* return the original object and remove inserted object
1686	(client needs the original object) */	1715	(client prefers the original object) */
		1716
		1717	// carrying must be 0 for mergable objects
		1718	weight_t oweight = weight_t (tmp->weight) * tmp->nrof;
		1719
1687	tmp->nrof += op->nrof;	1720	tmp->nrof += op->nrof;
1688	/* Weight handling gets pretty funky. Since we are adding to	1721
1689	* tmp->nrof, we need to increase the weight.	1722	if (object *pl = tmp->visible_to ())
1690	*/	1723	esrv_update_item (UPD_NROF, pl, tmp);
1691	add_weight (where, op->weight*op->nrof);	1724
1692	SET_FLAG(op, FLAG_REMOVED);	1725	adjust_weight (this, oweight, weight_t (tmp->weight) * tmp->nrof);
1693	free_object(op); /* free the inserted object */	1726
		1727	op->destroy ();
1694	op = tmp;	1728	op = tmp;
1695	remove_ob (op); /* and fix old object's links */	1729	goto inserted;
1696	CLEAR_FLAG(op, FLAG_REMOVED);
1697	break;
1698	}	1730	}
1699		1731
1700	/* I assume combined objects have no inventory	1732	op->owner = 0; // it's his/hers now. period.
1701	* We add the weight - this object could have just been removed	1733	op->map = 0;
1702	* (if it was possible to merge). calling remove_ob will subtract	1734	op->x = 0;
1703	* the weight, so we need to add it in again, since we actually do	1735	op->y = 0;
1704	* the linking below
1705	*/
1706	add_weight (where, op->weight*op->nrof);
1707	} else
1708	add_weight (where, (op->weight+op->carrying));
1709		1736
1710	otmp=is_player_inv(where);
1711	if (otmp&&otmp->contr!=NULL) {
1712	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1713	fix_player(otmp);
1714	}
1715
1716	op->map=NULL;
1717	op->env=where;
1718	op->above=NULL;	1737	op->above = 0;
1719	op->below=NULL;	1738	op->below = inv;
1720	op->x=0,op->y=0;	1739	op->env = this;
1721		1740
		1741	if (inv)
		1742	inv->above = op;
		1743
		1744	inv = op;
		1745
		1746	op->flag [FLAG_REMOVED] = 0;
		1747
		1748	if (object *pl = op->visible_to ())
		1749	esrv_send_item (pl, op);
		1750
		1751	adjust_weight (this, 0, op->total_weight ());
		1752
		1753	inserted:
1722	/* reset the light list and los of the players on the map */	1754	/* reset the light list and los of the players on the map */
1723	if((op->glow_radius!=0)&&where->map)	1755	if (op->glow_radius && is_on_map ())
1724	{	1756	{
1725	#ifdef DEBUG_LIGHTS	1757	update_stats ();
1726	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1758	update_all_los (map, x, y);
1727	op->name);
1728	#endif /* DEBUG_LIGHTS */
1729	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1730	}	1759	}
		1760	else if (is_player ())
		1761	// if this is a player's inventory, update stats
		1762	contr->queue_stats_update ();
1731		1763
1732	/* Client has no idea of ordering so lets not bother ordering it here.	1764	INVOKE_OBJECT (INSERT, this);
1733	* It sure simplifies this function...	1765
1734	*/
1735	if (where->inv==NULL)
1736	where->inv=op;
1737	else {
1738	op->below = where->inv;
1739	op->below->above = op;
1740	where->inv = op;
1741	}
1742	return op;	1766	return op;
1743	}	1767	}
1744		1768
1745	/*	1769	/*
1746	* Checks if any objects has a move_type that matches objects	1770	* Checks if any objects has a move_type that matches objects
…		…
1760	*	1784	*
1761	* MSW 2001-07-08: Check all objects on space, not just those below	1785	* MSW 2001-07-08: Check all objects on space, not just those below
1762	* object being inserted. insert_ob_in_map may not put new objects	1786	* object being inserted. insert_ob_in_map may not put new objects
1763	* on top.	1787	* on top.
1764	*/	1788	*/
1765		1789	int
1766	int check_move_on (object *op, object *originator)	1790	check_move_on (object *op, object *originator, int flags)
1767	{	1791	{
		1792	if (op->flag [FLAG_NO_APPLY])
		1793	return 0;
		1794
1768	object *tmp;	1795	object *tmp;
1769	tag_t tag;
1770	mapstruct *m=op->map;	1796	maptile *m = op->map;
1771	int x=op->x, y=op->y;	1797	int x = op->x, y = op->y;
1772	MoveType move_on, move_slow, move_block;
1773		1798
1774	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1799	mapspace &ms = m->at (x, y);
1775	return 0;
1776		1800
1777	tag = op->count;	1801	ms.update ();
1778		1802
1779	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1803	MoveType move_on = ms.move_on;
1780	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1804	MoveType move_slow = ms.move_slow;
1781	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1805	MoveType move_block = ms.move_block;
1782		1806
1783	/* if nothing on this space will slow op down or be applied,	1807	/* if nothing on this space will slow op down or be applied,
1784	* no need to do checking below. have to make sure move_type	1808	* no need to do checking below. have to make sure move_type
1785	* is set, as lots of objects don't have it set - we treat that	1809	* is set, as lots of objects don't have it set - we treat that
1786	* as walking.	1810	* as walking.
1787	*/	1811	*/
1788	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1812	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1789	return 0;	1813	return 0;
1790		1814
1791	/* This is basically inverse logic of that below - basically,	1815	/* This is basically inverse logic of that below - basically,
1792	* if the object can avoid the move on or slow move, they do so,	1816	* if the object can avoid the move on or slow move, they do so,
1793	* but can't do it if the alternate movement they are using is	1817	* but can't do it if the alternate movement they are using is
1794	* blocked. Logic on this seems confusing, but does seem correct.	1818	* blocked. Logic on this seems confusing, but does seem correct.
1795	*/	1819	*/
1796	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1820	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1797	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1821	return 0;
1798		1822
1799	/* The objects have to be checked from top to bottom.	1823	/* The objects have to be checked from top to bottom.
1800	* Hence, we first go to the top:	1824	* Hence, we first go to the top:
1801	*/	1825	*/
1802		1826	for (object *next, *tmp = ms.top; tmp; tmp = next)
1803	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
1804	tmp->above!=NULL; tmp=tmp->above) {
1805	/* Trim the search when we find the first other spell effect
1806	* this helps performance so that if a space has 50 spell objects,
1807	* we don't need to check all of them.
1808	*/
1809	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
1810	}	1827	{
1811	for(;tmp!=NULL; tmp=tmp->below) {	1828	next = tmp->below;
		1829
		1830	if (tmp == op)
1812	if (tmp == op) continue; /* Can't apply yourself */	1831	continue; /* Can't apply yourself */
1813		1832
1814	/* Check to see if one of the movement types should be slowed down.	1833	/* Check to see if one of the movement types should be slowed down.
1815	* Second check makes sure that the movement types not being slowed	1834	* Second check makes sure that the movement types not being slowed
1816	* (~slow_move) is not blocked on this space - just because the	1835	* (~slow_move) is not blocked on this space - just because the
1817	* space doesn't slow down swimming (for example), if you can't actually	1836	* space doesn't slow down swimming (for example), if you can't actually
1818	* swim on that space, can't use it to avoid the penalty.	1837	* swim on that space, can't use it to avoid the penalty.
1819	*/	1838	*/
1820	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1839	if (!op->flag [FLAG_WIZPASS])
		1840	{
1821	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1841	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1822	((op->move_type & tmp->move_slow) &&
1823	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1842	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
1824		1843	{
1825	float diff;
1826
1827	diff = tmp->move_slow_penalty*FABS(op->speed);	1844	float diff = tmp->move_slow_penalty * fabs (op->speed);
1828	if (op->type == PLAYER) {	1845
		1846	if (op->is_player ())
1829	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1847	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
1830	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1848	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
1831	diff /= 4.0;	1849	diff /= 4.0;
1832	}	1850
1833	}
1834	op->speed_left -= diff;	1851	op->speed_left -= diff;
1835	}	1852	}
1836	}	1853	}
1837		1854
1838	/* Basically same logic as above, except now for actual apply. */	1855	/* Basically same logic as above, except now for actual apply. */
1839	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1856	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1840	((op->move_type & tmp->move_on) &&
1841	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1857	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
		1858	{
		1859	if ((flags & INS_NO_AUTO_EXIT)
		1860	&& (tmp->type == EXIT || tmp->type == TELEPORTER
		1861	|| tmp->type == HOLE || tmp->type == TRAPDOOR)) //TODO: temporary, fix exits instead
		1862	continue;
1842		1863
1843	move_apply(tmp, op, originator);	1864	move_apply (tmp, op, originator);
		1865
1844	if (was_destroyed (op, tag))	1866	if (op->destroyed ())
1845	return 1;	1867	return 1;
1846		1868
1847	/* what the person/creature stepped onto has moved the object	1869	/* what the person/creature stepped onto has moved the object
1848	* someplace new. Don't process any further - if we did,	1870	* someplace new. Don't process any further - if we did,
1849	* have a feeling strange problems would result.	1871	* have a feeling strange problems would result.
1850	*/	1872	*/
1851	if (op->map != m || op->x != x || op->y != y) return 0;	1873	if (op->map != m || op->x != x || op->y != y)
		1874	return 0;
1852	}	1875	}
1853	}	1876	}
		1877
1854	return 0;	1878	return 0;
1855	}	1879	}
1856		1880
1857	/*	1881	/*
1858	* present_arch(arch, map, x, y) searches for any objects with	1882	* present_arch(arch, map, x, y) searches for any objects with
1859	* a matching archetype at the given map and coordinates.	1883	* a matching archetype at the given map and coordinates.
1860	* The first matching object is returned, or NULL if none.	1884	* The first matching object is returned, or NULL if none.
1861	*/	1885	*/
1862		1886	object *
1863	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1887	present_arch (const archetype *at, maptile *m, int x, int y)
1864	object *tmp;	1888	{
1865	if(m==NULL || out_of_map(m,x,y)) {	1889	if (!m || out_of_map (m, x, y))
		1890	{
1866	LOG(llevError,"Present_arch called outside map.\n");	1891	LOG (llevError, "Present_arch called outside map.\n");
1867	return NULL;	1892	return NULL;
1868	}	1893	}
1869	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1894
1870	if(tmp->arch == at)	1895	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1896	if (tmp->arch->archname == at->archname)
1871	return tmp;	1897	return tmp;
		1898
1872	return NULL;	1899	return NULL;
1873	}	1900	}
1874		1901
1875	/*	1902	/*
1876	* present(type, map, x, y) searches for any objects with	1903	* present(type, map, x, y) searches for any objects with
1877	* a matching type variable at the given map and coordinates.	1904	* a matching type variable at the given map and coordinates.
1878	* The first matching object is returned, or NULL if none.	1905	* The first matching object is returned, or NULL if none.
1879	*/	1906	*/
1880		1907	object *
1881	object *present(unsigned char type,mapstruct *m, int x,int y) {	1908	present (unsigned char type, maptile *m, int x, int y)
1882	object *tmp;	1909	{
1883	if(out_of_map(m,x,y)) {	1910	if (out_of_map (m, x, y))
		1911	{
1884	LOG(llevError,"Present called outside map.\n");	1912	LOG (llevError, "Present called outside map.\n");
1885	return NULL;	1913	return NULL;
1886	}	1914	}
1887	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1915
		1916	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1888	if(tmp->type==type)	1917	if (tmp->type == type)
1889	return tmp;	1918	return tmp;
		1919
1890	return NULL;	1920	return NULL;
1891	}	1921	}
1892		1922
1893	/*	1923	/*
1894	* present_in_ob(type, object) searches for any objects with	1924	* present_in_ob(type, object) searches for any objects with
1895	* a matching type variable in the inventory of the given object.	1925	* a matching type variable in the inventory of the given object.
1896	* The first matching object is returned, or NULL if none.	1926	* The first matching object is returned, or NULL if none.
1897	*/	1927	*/
1898		1928	object *
1899	object *present_in_ob(unsigned char type, const object *op) {	1929	present_in_ob (unsigned char type, const object *op)
1900	object *tmp;	1930	{
1901	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1931	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1902	if(tmp->type==type)	1932	if (tmp->type == type)
1903	return tmp;	1933	return tmp;
		1934
1904	return NULL;	1935	return NULL;
1905	}	1936	}
1906		1937
1907	/*	1938	/*
1908	* present_in_ob (type, str, object) searches for any objects with	1939	* present_in_ob (type, str, object) searches for any objects with
…		…
1916	* str is the string to match against. Note that we match against	1947	* str is the string to match against. Note that we match against
1917	* the object name, not the archetype name. this is so that the	1948	* the object name, not the archetype name. this is so that the
1918	* spell code can use one object type (force), but change it's name	1949	* spell code can use one object type (force), but change it's name
1919	* to be unique.	1950	* to be unique.
1920	*/	1951	*/
1921		1952	object *
1922	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1953	present_in_ob_by_name (int type, const char *str, const object *op)
1923	object *tmp;	1954	{
1924
1925	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1955	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1926	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1956	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1927	return tmp;	1957	return tmp;
1928	}	1958
1929	return NULL;	1959	return 0;
1930	}	1960	}
1931		1961
1932	/*	1962	/*
1933	* present_arch_in_ob(archetype, object) searches for any objects with	1963	* present_arch_in_ob(archetype, object) searches for any objects with
1934	* a matching archetype in the inventory of the given object.	1964	* a matching archetype in the inventory of the given object.
1935	* The first matching object is returned, or NULL if none.	1965	* The first matching object is returned, or NULL if none.
1936	*/	1966	*/
1937		1967	object *
1938	object *present_arch_in_ob(const archetype *at, const object *op) {	1968	present_arch_in_ob (const archetype *at, const object *op)
1939	object *tmp;	1969	{
1940	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1970	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1941	if( tmp->arch == at)	1971	if (tmp->arch->archname == at->archname)
1942	return tmp;	1972	return tmp;
		1973
1943	return NULL;	1974	return NULL;
1944	}	1975	}
1945		1976
1946	/*	1977	/*
1947	* activate recursively a flag on an object inventory	1978	* activate recursively a flag on an object inventory
1948	*/	1979	*/
		1980	void
1949	void flag_inv(object*op, int flag){	1981	flag_inv (object *op, int flag)
1950	object *tmp;	1982	{
1951	if(op->inv)
1952	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1983	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1953	SET_FLAG(tmp, flag);	1984	{
		1985	tmp->set_flag (flag);
1954	flag_inv(tmp,flag);	1986	flag_inv (tmp, flag);
1955	}	1987	}
		1988	}
		1989
1956	}/*	1990	/*
1957	* desactivate recursively a flag on an object inventory	1991	* deactivate recursively a flag on an object inventory
1958	*/	1992	*/
		1993	void
1959	void unflag_inv(object*op, int flag){	1994	unflag_inv (object *op, int flag)
1960	object *tmp;	1995	{
1961	if(op->inv)
1962	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1996	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1963	CLEAR_FLAG(tmp, flag);	1997	{
		1998	tmp->clr_flag (flag);
1964	unflag_inv(tmp,flag);	1999	unflag_inv (tmp, flag);
1965	}	2000	}
1966	}
1967
1968	/*
1969	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1970	* all it's inventory (recursively).
1971	* If checksums are used, a player will get set_cheat called for
1972	* him/her-self and all object carried by a call to this function.
1973	*/
1974
1975	void set_cheat(object *op) {
1976	SET_FLAG(op, FLAG_WAS_WIZ);
1977	flag_inv(op, FLAG_WAS_WIZ);
1978	}	2001	}
1979		2002
1980	/*	2003	/*
1981	* find_free_spot(object, map, x, y, start, stop) will search for	2004	* find_free_spot(object, map, x, y, start, stop) will search for
1982	* a spot at the given map and coordinates which will be able to contain	2005	* a spot at the given map and coordinates which will be able to contain
…		…
1984	* to search (see the freearr_x/y[] definition).	2007	* to search (see the freearr_x/y[] definition).
1985	* It returns a random choice among the alternatives found.	2008	* It returns a random choice among the alternatives found.
1986	* start and stop are where to start relative to the free_arr array (1,9	2009	* start and stop are where to start relative to the free_arr array (1,9
1987	* does all 4 immediate directions). This returns the index into the	2010	* does all 4 immediate directions). This returns the index into the
1988	* array of the free spot, -1 if no spot available (dir 0 = x,y)	2011	* array of the free spot, -1 if no spot available (dir 0 = x,y)
1989	* Note - this only checks to see if there is space for the head of the
1990	* object - if it is a multispace object, this should be called for all
1991	* pieces.
1992	* Note2: This function does correctly handle tiled maps, but does not	2012	* Note: This function does correctly handle tiled maps, but does not
1993	* inform the caller. However, insert_ob_in_map will update as	2013	* inform the caller. However, insert_ob_in_map will update as
1994	* necessary, so the caller shouldn't need to do any special work.	2014	* necessary, so the caller shouldn't need to do any special work.
1995	* Note - updated to take an object instead of archetype - this is necessary	2015	* Note - updated to take an object instead of archetype - this is necessary
1996	* because arch_blocked (now ob_blocked) needs to know the movement type	2016	* because arch_blocked (now ob_blocked) needs to know the movement type
1997	* to know if the space in question will block the object. We can't use	2017	* to know if the space in question will block the object. We can't use
1998	* the archetype because that isn't correct if the monster has been	2018	* the archetype because that isn't correct if the monster has been
1999	* customized, changed states, etc.	2019	* customized, changed states, etc.
2000	*/	2020	*/
2001		2021	int
2002	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2022	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
2003	int i,index=0, flag;	2023	{
2004	static int altern[SIZEOFFREE];	2024	int altern[SIZEOFFREE];
		2025	int index = 0;
2005		2026
2006	for(i=start;i<stop;i++) {	2027	for (int i = start; i < stop; i++)
2007	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2028	{
2008	if(!flag)	2029	mapxy pos (m, x, y); pos.move (i);
		2030
		2031	if (!pos.normalise ())
		2032	continue;
		2033
		2034	mapspace &ms = *pos;
		2035
		2036	if (ms.flags () & P_IS_ALIVE)
		2037	continue;
		2038
		2039	/* However, often
		2040	* ob doesn't have any move type (when used to place exits)
		2041	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		2042	*/
		2043	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		2044	{
2009	altern[index++]=i;	2045	altern [index++] = i;
		2046	continue;
		2047	}
2010		2048
2011	/* Basically, if we find a wall on a space, we cut down the search size.	2049	/* Basically, if we find a wall on a space, we cut down the search size.
2012	* In this way, we won't return spaces that are on another side of a wall.	2050	* In this way, we won't return spaces that are on another side of a wall.
2013	* This mostly work, but it cuts down the search size in all directions -	2051	* This mostly work, but it cuts down the search size in all directions -
2014	* if the space being examined only has a wall to the north and empty	2052	* if the space being examined only has a wall to the north and empty
2015	* spaces in all the other directions, this will reduce the search space	2053	* spaces in all the other directions, this will reduce the search space
2016	* to only the spaces immediately surrounding the target area, and	2054	* to only the spaces immediately surrounding the target area, and
2017	* won't look 2 spaces south of the target space.	2055	* won't look 2 spaces south of the target space.
2018	*/	2056	*/
2019	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2057	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		2058	{
2020	stop=maxfree[i];	2059	stop = maxfree[i];
2021	}	2060	continue;
2022	if(!index) return -1;	2061	}
2023	return altern[RANDOM()%index];
2024	}
2025		2062
		2063	/* Note it is intentional that we check ob - the movement type of the
		2064	* head of the object should correspond for the entire object.
		2065	*/
		2066	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		2067	continue;
		2068
		2069	if (ob->blocked (pos.m, pos.x, pos.y))
		2070	continue;
		2071
		2072	altern [index++] = i;
		2073	}
		2074
		2075	if (!index)
		2076	return -1;
		2077
		2078	return altern [rndm (index)];
		2079	}
		2080
2026	/*	2081	/*
2027	* find_first_free_spot(archetype, mapstruct, x, y) works like	2082	* find_first_free_spot(archetype, maptile, x, y) works like
2028	* find_free_spot(), but it will search max number of squares.	2083	* find_free_spot(), but it will search max number of squares.
2029	* But it will return the first available spot, not a random choice.	2084	* But it will return the first available spot, not a random choice.
2030	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2085	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2031	*/	2086	*/
2032		2087	int
2033	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2088	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2034	int i;	2089	{
2035	for(i=0;i<SIZEOFFREE;i++) {	2090	for (int i = 0; i < SIZEOFFREE; i++)
2036	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2091	if (!ob->blocked (m, x + DIRX (i), y + DIRY (i)))
2037	return i;	2092	return i;
2038	}	2093
2039	return -1;	2094	return -1;
2040	}	2095	}
2041		2096
2042	/*	2097	/*
2043	* The function permute(arr, begin, end) randomly reorders the array	2098	* The function permute(arr, begin, end) randomly reorders the array
2044	* arr[begin..end-1].	2099	* arr[begin..end-1].
		2100	* now uses a fisher-yates shuffle, old permute was broken
2045	*/	2101	*/
		2102	static void
2046	static void permute(int *arr, int begin, int end)	2103	permute (int *arr, int begin, int end)
2047	{	2104	{
2048	int i, j, tmp, len;	2105	arr += begin;
		2106	end -= begin;
2049		2107
2050	len = end-begin;	2108	while (--end)
2051	for(i = begin; i < end; i++)	2109	swap (arr [end], arr [rndm (end + 1)]);
2052	{
2053	j = begin+RANDOM()%len;
2054
2055	tmp = arr[i];
2056	arr[i] = arr[j];
2057	arr[j] = tmp;
2058	}
2059	}	2110	}
2060		2111
2061	/* new function to make monster searching more efficient, and effective!	2112	/* new function to make monster searching more efficient, and effective!
2062	* This basically returns a randomized array (in the passed pointer) of	2113	* This basically returns a randomized array (in the passed pointer) of
2063	* the spaces to find monsters. In this way, it won't always look for	2114	* the spaces to find monsters. In this way, it won't always look for
2064	* monsters to the north first. However, the size of the array passed	2115	* monsters to the north first. However, the size of the array passed
2065	* covers all the spaces, so within that size, all the spaces within	2116	* covers all the spaces, so within that size, all the spaces within
2066	* the 3x3 area will be searched, just not in a predictable order.	2117	* the 3x3 area will be searched, just not in a predictable order.
2067	*/	2118	*/
		2119	void
2068	void get_search_arr(int *search_arr)	2120	get_search_arr (int *search_arr)
2069	{	2121	{
2070	int i;	2122	int i;
2071		2123
2072	for(i = 0; i < SIZEOFFREE; i++)	2124	for (i = 0; i < SIZEOFFREE; i++)
2073	{
2074	search_arr[i] = i;	2125	search_arr[i] = i;
2075	}
2076		2126
2077	permute(search_arr, 1, SIZEOFFREE1+1);	2127	permute (search_arr, 1, SIZEOFFREE1 + 1);
2078	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2128	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2079	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2129	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2080	}	2130	}
2081		2131
2082	/*	2132	/*
2083	* find_dir(map, x, y, exclude) will search some close squares in the	2133	* find_dir(map, x, y, exclude) will search some close squares in the
2084	* given map at the given coordinates for live objects.	2134	* given map at the given coordinates for live objects.
…		…
2089	* Perhaps incorrectly, but I'm making the assumption that exclude	2139	* Perhaps incorrectly, but I'm making the assumption that exclude
2090	* is actually want is going to try and move there. We need this info	2140	* is actually want is going to try and move there. We need this info
2091	* because we have to know what movement the thing looking to move	2141	* because we have to know what movement the thing looking to move
2092	* there is capable of.	2142	* there is capable of.
2093	*/	2143	*/
2094		2144	int
2095	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2145	find_dir (maptile *m, int x, int y, object *exclude)
		2146	{
2096	int i,max=SIZEOFFREE, mflags;	2147	int max = SIZEOFFREE;
2097	sint16 nx, ny;
2098	object *tmp;
2099	mapstruct *mp;
2100	MoveType blocked, move_type;	2148	MoveType move_type;
2101		2149
2102	if (exclude && exclude->head) {	2150	if (exclude && exclude->head_ () != exclude)
		2151	{
2103	exclude = exclude->head;	2152	exclude = exclude->head;
2104	move_type = exclude->move_type;	2153	move_type = exclude->move_type;
2105	} else {	2154	}
		2155	else
		2156	{
2106	/* If we don't have anything, presume it can use all movement types. */	2157	/* If we don't have anything, presume it can use all movement types. */
2107	move_type=MOVE_ALL;	2158	move_type = MOVE_ALL;
		2159	}
		2160
		2161	for (int i = 1; i < max; i++)
2108	}	2162	{
		2163	mapxy pos (m, x, y);
		2164	pos.move (i);
2109		2165
2110	for(i=1;i<max;i++) {	2166	if (!pos.normalise ())
2111	mp = m;
2112	nx = x + freearr_x[i];	2167	max = maxfree[i];
2113	ny = y + freearr_y[i];	2168	else
		2169	{
		2170	mapspace &ms = *pos;
2114		2171
2115	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2172	if ((move_type & ms.move_block) == move_type)
2116	if (mflags & P_OUT_OF_MAP) {
2117	max = maxfree[i];	2173	max = maxfree [i];
2118	} else {
2119	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2120
2121	if ((move_type & blocked) == move_type) {
2122	max=maxfree[i];
2123	} else if (mflags & P_IS_ALIVE) {	2174	else if (ms.flags () & P_IS_ALIVE)
2124	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2175	{
2125	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2176	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2177	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2126	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2178	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2127	break;
2128	}
2129	}
2130	if(tmp) {
2131	return freedir[i];	2179	return freedir [i];
2132	}
2133	}	2180	}
2134	}	2181	}
2135	}	2182	}
		2183
2136	return 0;	2184	return 0;
2137	}	2185	}
2138		2186
2139	/*	2187	/*
2140	* distance(object 1, object 2) will return the square of the	2188	* distance(object 1, object 2) will return the square of the
2141	* distance between the two given objects.	2189	* distance between the two given objects.
2142	*/	2190	*/
2143		2191	int
2144	int distance(const object *ob1, const object *ob2) {	2192	distance (const object *ob1, const object *ob2)
2145	int i;	2193	{
2146	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2194	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2147	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2148	return i;
2149	}	2195	}
2150		2196
2151	/*	2197	/*
2152	* find_dir_2(delta-x,delta-y) will return a direction in which	2198	* find_dir_2(delta-x,delta-y) will return a direction value
2153	* an object which has subtracted the x and y coordinates of another	2199	* for running into direct [dx, dy].
2154	* object, needs to travel toward it.	2200	* (the opposite of crossfire's find_dir_2!)
2155	*/	2201	*/
2156		2202	int
2157	int find_dir_2(int x, int y) {	2203	find_dir_2 (int x, int y)
		2204	{
		2205	#if 1 // new algorithm
		2206	// this works by putting x, y into 16 sectors, which
		2207	// are not equal sized, but are a better approximation
		2208	// then the old algorithm, and then using a mapping
		2209	// table to map it into a direction value.
		2210	// basically, it maps these comparisons to each bit
		2211	// bit #3: x < 0
		2212	// bit #2: y < 0
		2213	// bit #1: x > y
		2214	// bit #0: x > 2y
		2215
		2216	static const uint8 dir[16] = {
		2217	4, 5, 4, 3,
		2218	2, 1, 2, 3,
		2219	6, 5, 6, 7,
		2220	8, 1, 8, 7,
		2221	};
		2222	int sector = 0;
		2223
		2224	// this is a bit ugly, but more likely to result in branchless code
		2225	sector |= x < 0 ? 8 : 0;
		2226	x = x < 0 ? -x : x; // abs
		2227
		2228	sector |= y < 0 ? 4 : 0;
		2229	y = y < 0 ? -y : y; // abs
		2230
		2231	if (x > y)
		2232	{
		2233	sector |= 2;
		2234
		2235	if (x > y * 2)
		2236	sector |= 1;
		2237	}
		2238	else
		2239	{
		2240	if (y > x * 2)
		2241	sector |= 1;
		2242	else if (!y)
		2243	return 0; // x == 0 here
		2244	}
		2245
		2246	return dir [sector];
		2247	#else // old algorithm
2158	int q;	2248	int q;
2159		2249
2160	if(y)	2250	if (y)
2161	q=x*100/y;	2251	q = 128 * x / y;
2162	else if (x)	2252	else if (x)
2163	q= -300*x;	2253	q = -512 * x; // to make it > 309
2164	else	2254	else
2165	return 0;	2255	return 0;
2166		2256
2167	if(y>0) {	2257	if (y > 0)
2168	if(q < -242)	2258	{
		2259	if (q < -309) return 7;
		2260	if (q < -52) return 6;
		2261	if (q < 52) return 5;
		2262	if (q < 309) return 4;
		2263
2169	return 3 ;	2264	return 3;
2170	if (q < -41)	2265	}
		2266	else
		2267	{
		2268	if (q < -309) return 3;
		2269	if (q < -52) return 2;
		2270	if (q < 52) return 1;
		2271	if (q < 309) return 8;
		2272
2171	return 2 ;	2273	return 7;
2172	if (q < 41)
2173	return 1 ;
2174	if (q < 242)
2175	return 8 ;
2176	return 7 ;
2177	}	2274	}
2178		2275	#endif
2179	if (q < -242)
2180	return 7 ;
2181	if (q < -41)
2182	return 6 ;
2183	if (q < 41)
2184	return 5 ;
2185	if (q < 242)
2186	return 4 ;
2187
2188	return 3 ;
2189	}
2190
2191	/*
2192	* absdir(int): Returns a number between 1 and 8, which represent
2193	* the "absolute" direction of a number (it actually takes care of
2194	* "overflow" in previous calculations of a direction).
2195	*/
2196
2197	int absdir(int d) {
2198	while(d<1) d+=8;
2199	while(d>8) d-=8;
2200	return d;
2201	}	2276	}
2202		2277
2203	/*	2278	/*
2204	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2279	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2205	* between two directions (which are expected to be absolute (see absdir())	2280	* between two directions (which are expected to be absolute (see absdir())
2206	*/	2281	*/
2207		2282	int
2208	int dirdiff(int dir1, int dir2) {	2283	dirdiff (int dir1, int dir2)
2209	int d;	2284	{
2210	d = abs(dir1 - dir2);	2285	int d = abs (dir1 - dir2);
2211	if(d>4)	2286
2212	d = 8 - d;	2287	return d > 4 ? 8 - d : d;
2213	return d;
2214	}	2288	}
2215		2289
2216	/* peterm:	2290	/* peterm:
2217	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2291	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
2218	* Basically, this is a table of directions, and what directions	2292	* Basically, this is a table of directions, and what directions
…		…
2220	* This basically means that if direction is 15, then it could either go	2294	* This basically means that if direction is 15, then it could either go
2221	* direction 4, 14, or 16 to get back to where we are.	2295	* direction 4, 14, or 16 to get back to where we are.
2222	* Moved from spell_util.c to object.c with the other related direction	2296	* Moved from spell_util.c to object.c with the other related direction
2223	* functions.	2297	* functions.
2224	*/	2298	*/
2225
2226	int reduction_dir[SIZEOFFREE][3] = {	2299	static const int reduction_dir[SIZEOFFREE][3] = {
2227	{0,0,0}, /* 0 */	2300	{0, 0, 0}, /* 0 */
2228	{0,0,0}, /* 1 */	2301	{0, 0, 0}, /* 1 */
2229	{0,0,0}, /* 2 */	2302	{0, 0, 0}, /* 2 */
2230	{0,0,0}, /* 3 */	2303	{0, 0, 0}, /* 3 */
2231	{0,0,0}, /* 4 */	2304	{0, 0, 0}, /* 4 */
2232	{0,0,0}, /* 5 */	2305	{0, 0, 0}, /* 5 */
2233	{0,0,0}, /* 6 */	2306	{0, 0, 0}, /* 6 */
2234	{0,0,0}, /* 7 */	2307	{0, 0, 0}, /* 7 */
2235	{0,0,0}, /* 8 */	2308	{0, 0, 0}, /* 8 */
2236	{8,1,2}, /* 9 */	2309	{8, 1, 2}, /* 9 */
2237	{1,2,-1}, /* 10 */	2310	{1, 2, -1}, /* 10 */
2238	{2,10,12}, /* 11 */	2311	{2, 10, 12}, /* 11 */
2239	{2,3,-1}, /* 12 */	2312	{2, 3, -1}, /* 12 */
2240	{2,3,4}, /* 13 */	2313	{2, 3, 4}, /* 13 */
2241	{3,4,-1}, /* 14 */	2314	{3, 4, -1}, /* 14 */
2242	{4,14,16}, /* 15 */	2315	{4, 14, 16}, /* 15 */
2243	{5,4,-1}, /* 16 */	2316	{5, 4, -1}, /* 16 */
2244	{4,5,6}, /* 17 */	2317	{4, 5, 6}, /* 17 */
2245	{6,5,-1}, /* 18 */	2318	{6, 5, -1}, /* 18 */
2246	{6,20,18}, /* 19 */	2319	{6, 20, 18}, /* 19 */
2247	{7,6,-1}, /* 20 */	2320	{7, 6, -1}, /* 20 */
2248	{6,7,8}, /* 21 */	2321	{6, 7, 8}, /* 21 */
2249	{7,8,-1}, /* 22 */	2322	{7, 8, -1}, /* 22 */
2250	{8,22,24}, /* 23 */	2323	{8, 22, 24}, /* 23 */
2251	{8,1,-1}, /* 24 */	2324	{8, 1, -1}, /* 24 */
2252	{24,9,10}, /* 25 */	2325	{24, 9, 10}, /* 25 */
2253	{9,10,-1}, /* 26 */	2326	{9, 10, -1}, /* 26 */
2254	{10,11,-1}, /* 27 */	2327	{10, 11, -1}, /* 27 */
2255	{27,11,29}, /* 28 */	2328	{27, 11, 29}, /* 28 */
2256	{11,12,-1}, /* 29 */	2329	{11, 12, -1}, /* 29 */
2257	{12,13,-1}, /* 30 */	2330	{12, 13, -1}, /* 30 */
2258	{12,13,14}, /* 31 */	2331	{12, 13, 14}, /* 31 */
2259	{13,14,-1}, /* 32 */	2332	{13, 14, -1}, /* 32 */
2260	{14,15,-1}, /* 33 */	2333	{14, 15, -1}, /* 33 */
2261	{33,15,35}, /* 34 */	2334	{33, 15, 35}, /* 34 */
2262	{16,15,-1}, /* 35 */	2335	{16, 15, -1}, /* 35 */
2263	{17,16,-1}, /* 36 */	2336	{17, 16, -1}, /* 36 */
2264	{18,17,16}, /* 37 */	2337	{18, 17, 16}, /* 37 */
2265	{18,17,-1}, /* 38 */	2338	{18, 17, -1}, /* 38 */
2266	{18,19,-1}, /* 39 */	2339	{18, 19, -1}, /* 39 */
2267	{41,19,39}, /* 40 */	2340	{41, 19, 39}, /* 40 */
2268	{19,20,-1}, /* 41 */	2341	{19, 20, -1}, /* 41 */
2269	{20,21,-1}, /* 42 */	2342	{20, 21, -1}, /* 42 */
2270	{20,21,22}, /* 43 */	2343	{20, 21, 22}, /* 43 */
2271	{21,22,-1}, /* 44 */	2344	{21, 22, -1}, /* 44 */
2272	{23,22,-1}, /* 45 */	2345	{23, 22, -1}, /* 45 */
2273	{45,47,23}, /* 46 */	2346	{45, 47, 23}, /* 46 */
2274	{23,24,-1}, /* 47 */	2347	{23, 24, -1}, /* 47 */
2275	{24,9,-1}}; /* 48 */	2348	{24, 9, -1}
		2349	}; /* 48 */
2276		2350
2277	/* Recursive routine to step back and see if we can	2351	/* Recursive routine to step back and see if we can
2278	* find a path to that monster that we found. If not,	2352	* find a path to that monster that we found. If not,
2279	* we don't bother going toward it. Returns 1 if we	2353	* we don't bother going toward it. Returns 1 if we
2280	* can see a direct way to get it	2354	* can see a direct way to get it
2281	* Modified to be map tile aware -.MSW	2355	* Modified to be map tile aware -.MSW
2282	*/	2356	*/
2283		2357	int
2284
2285	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2358	can_see_monsterP (maptile *m, int x, int y, int dir)
		2359	{
2286	sint16 dx, dy;	2360	sint16 dx, dy;
2287	int mflags;	2361	int mflags;
2288		2362
		2363	if (dir < 0)
2289	if(dir<0) return 0; /* exit condition: invalid direction */	2364	return 0; /* exit condition: invalid direction */
2290		2365
2291	dx = x + freearr_x[dir];	2366	dx = x + DIRX (dir);
2292	dy = y + freearr_y[dir];	2367	dy = y + DIRY (dir);
2293		2368
2294	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2369	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2295		2370
2296	/* This functional arguably was incorrect before - it was	2371	/* This functional arguably was incorrect before - it was
2297	* checking for P_WALL - that was basically seeing if	2372	* checking for P_WALL - that was basically seeing if
2298	* we could move to the monster - this is being more	2373	* we could move to the monster - this is being more
2299	* literal on if we can see it. To know if we can actually	2374	* literal on if we can see it. To know if we can actually
2300	* move to the monster, we'd need the monster passed in or	2375	* move to the monster, we'd need the monster passed in or
2301	* at least its move type.	2376	* at least its move type.
2302	*/	2377	*/
2303	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2378	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2379	return 0;
2304		2380
2305	/* yes, can see. */	2381	/* yes, can see. */
2306	if(dir < 9) return 1;	2382	if (dir < 9)
		2383	return 1;
		2384
2307	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2385	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2308	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2386	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2309	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2387	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2310	}	2388	}
2311		2389
2312
2313
2314	/*	2390	/*
2315	* can_pick(picker, item): finds out if an object is possible to be	2391	* can_pick(picker, item): finds out if an object is possible to be
2316	* picked up by the picker. Returnes 1 if it can be	2392	* picked up by the picker. Returnes 1 if it can be
2317	* picked up, otherwise 0.	2393	* picked up, otherwise 0.
2318	*	2394	*
2319	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2395	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2320	* core dumps if they do.	2396	* core dumps if they do.
2321	*	2397	*
2322	* Add a check so we can't pick up invisible objects (0.93.8)	2398	* Add a check so we can't pick up invisible objects (0.93.8)
2323	*/	2399	*/
2324		2400	int
2325	int can_pick(const object *who, const object *item) {	2401	can_pick (const object *who, const object *item)
2326	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2402	{
2327	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2403	return /*who->flag [FLAG_WIZ]|| */
2328	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2404	(item->weight > 0 && !item->flag [FLAG_NO_PICK] &&
2329	(who->type==PLAYER||item->weight<who->weight/3));	2405	!item->flag [FLAG_ALIVE] && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2330	}	2406	}
2331		2407
		2408	//-GPL
2332		2409
2333	/*	2410	/*
2334	* create clone from object to another	2411	* create clone from object to another
2335	*/	2412	*/
2336	object *object_create_clone (object *asrc) {	2413	object *
2337	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2414	object::deep_clone ()
		2415	{
		2416	assert (("deep_clone called on non-head object", is_head ()));
2338		2417
2339	if(!asrc) return NULL;	2418	object *dst = clone ();
2340	src = asrc;
2341	if(src->head)
2342	src = src->head;
2343		2419
2344	prev = NULL;	2420	object *prev = dst;
2345	for(part = src; part; part = part->more) {	2421	for (object *part = this->more; part; part = part->more)
2346	tmp = get_object();	2422	{
2347	copy_object(part,tmp);	2423	object *tmp = part->clone ();
2348	tmp->x -= src->x;
2349	tmp->y -= src->y;
2350	if(!part->head) {
2351	dst = tmp;
2352	tmp->head = NULL;
2353	} else {
2354	tmp->head = dst;	2424	tmp->head = dst;
2355	}
2356	tmp->more = NULL;
2357	if(prev)
2358	prev->more = tmp;	2425	prev->more = tmp;
2359	prev = tmp;	2426	prev = tmp;
2360	}	2427	}
2361	/*** copy inventory ***/	2428
2362	for(item = src->inv; item; item = item->below) {	2429	for (object *item = inv; item; item = item->below)
2363	(void) insert_ob_in_ob(object_create_clone(item),dst);	2430	insert_ob_in_ob (item->deep_clone (), dst);
2364	}
2365		2431
2366	return dst;	2432	return dst;
2367	}
2368
2369	/* return true if the object was destroyed, 0 otherwise */
2370	int was_destroyed (const object *op, tag_t old_tag)
2371	{
2372	/* checking for FLAG_FREED isn't necessary, but makes this function more
2373	* robust */
2374	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2375	}
2376
2377	/* GROS - Creates an object using a string representing its content. */
2378	/* Basically, we save the content of the string to a temp file, then call */
2379	/* load_object on it. I admit it is a highly inefficient way to make things, */
2380	/* but it was simple to make and allows reusing the load_object function. */
2381	/* Remember not to use load_object_str in a time-critical situation. */
2382	/* Also remember that multiparts objects are not supported for now. */
2383
2384	object* load_object_str(const char *obstr)
2385	{
2386	object *op;
2387	char filename[MAX_BUF];
2388	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2389
2390	FILE *tempfile=fopen(filename,"w");
2391	if (tempfile == NULL)
2392	{
2393	LOG(llevError,"Error - Unable to access load object temp file\n");
2394	return NULL;
2395	};
2396	fprintf(tempfile,obstr);
2397	fclose(tempfile);
2398
2399	op=get_object();
2400
2401	object_thawer thawer (filename);
2402
2403	if (thawer)
2404	load_object(thawer,op,0);
2405
2406	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2407	CLEAR_FLAG(op,FLAG_REMOVED);
2408
2409	return op;
2410	}	2433	}
2411		2434
2412	/* This returns the first object in who's inventory that	2435	/* This returns the first object in who's inventory that
2413	* has the same type and subtype match.	2436	* has the same type and subtype match.
2414	* returns NULL if no match.	2437	* returns NULL if no match.
2415	*/	2438	*/
		2439	object *
2416	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2440	find_obj_by_type_subtype (const object *who, int type, int subtype)
2417	{	2441	{
2418	object *tmp;
2419
2420	for (tmp=who->inv; tmp; tmp=tmp->below)	2442	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2421	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2443	if (tmp->type == type && tmp->subtype == subtype)
		2444	return tmp;
2422		2445
2423	return NULL;	2446	return 0;
2424	}	2447	}
2425		2448
2426	/* If ob has a field named key, return the link from the list,	2449	/* Zero the key_values on op, decrementing the shared-string
2427	* otherwise return NULL.	2450	* refcounts and freeing the links.
2428	*	2451	*/
2429	* key must be a passed in shared string - otherwise, this won't	2452	void
2430	* do the desired thing.	2453	key_values::clear ()
2431	*/	2454	{
2432	key_value * get_ob_key_link(const object * ob, const char * key) {	2455	for (key_value *kvp = first; kvp; )
2433	key_value * link;
2434		2456	{
2435	for (link = ob->key_values; link != NULL; link = link->next) {	2457	key_value *next = kvp->next;
		2458	delete kvp;
		2459	kvp = next;
		2460	}
		2461
		2462	first = 0;
		2463	}
		2464
		2465	shstr_tmp
		2466	key_values::get (shstr_tmp key) const
		2467	{
		2468	for (key_value *kv = first; kv; kv = kv->next)
2436	if (link->key == key) {	2469	if (kv->key == key)
		2470	return kv->value;
		2471
		2472	return shstr ();
		2473	}
		2474
		2475	void
		2476	key_values::add (shstr_tmp key, shstr_tmp value)
		2477	{
		2478	key_value *kv = new key_value;
		2479
		2480	kv->next = first;
		2481	kv->key = key;
		2482	kv->value = value;
		2483
		2484	first = kv;
		2485	}
		2486
		2487	void
		2488	key_values::set (shstr_tmp key, shstr_tmp value)
		2489	{
		2490	for (key_value *kv = first; kv; kv = kv->next)
		2491	if (kv->key == key)
		2492	{
		2493	kv->value = value;
2437	return link;	2494	return;
		2495	}
		2496
		2497	add (key, value);
		2498	}
		2499
		2500	void
		2501	key_values::del (shstr_tmp key)
		2502	{
		2503	for (key_value **kvp = &first; *kvp; kvp = &(*kvp)->next)
		2504	if ((*kvp)->key == key)
		2505	{
		2506	key_value *kv = *kvp;
		2507	*kvp = (*kvp)->next;
		2508	delete kv;
		2509	return;
		2510	}
		2511	}
		2512
		2513	void
		2514	key_values::reverse ()
		2515	{
		2516	key_value *prev = 0;
		2517	key_value *head = first;
		2518
		2519	while (head)
		2520	{
		2521	key_value *node = head;
		2522	head = head->next;
		2523	node->next = prev;
		2524	prev = node;
		2525	}
		2526
		2527	first = prev;
		2528	}
		2529
		2530	key_values &
		2531	key_values::operator =(const key_values &kv)
		2532	{
		2533	clear ();
		2534
		2535	for (key_value *kvp = kv.first; kvp; kvp = kvp->next)
		2536	add (kvp->key, kvp->value);
		2537
		2538	reverse ();
		2539	}
		2540
		2541	object::depth_iterator::depth_iterator (object *container)
		2542	: iterator_base (container)
		2543	{
		2544	while (item->inv)
		2545	item = item->inv;
		2546	}
		2547
		2548	void
		2549	object::depth_iterator::next ()
		2550	{
		2551	if (item->below)
		2552	{
		2553	item = item->below;
		2554
		2555	while (item->inv)
		2556	item = item->inv;
		2557	}
		2558	else
		2559	item = item->env;
		2560	}
		2561
		2562	const char *
		2563	object::flag_desc (char *desc, int len) const
		2564	{
		2565	char *p = desc;
		2566	bool first = true;
		2567
		2568	*p = 0;
		2569
		2570	for (int i = 0; i < NUM_FLAGS; i++)
		2571	{
		2572	if (len <= 10) // magic constant!
		2573	{
		2574	snprintf (p, len, ",...");
		2575	break;
2438	}	2576	}
2439	}
2440
2441	return NULL;
2442	}
2443		2577
2444	/*	2578	if (flag [i])
2445	* Returns the value of op has an extra_field for key, or NULL.
2446	*
2447	* The argument doesn't need to be a shared string.
2448	*
2449	* The returned string is shared.
2450	*/
2451	const char * get_ob_key_value(const object * op, const char * const key) {
2452	key_value * link;
2453	const char * canonical_key;
2454
2455	canonical_key = shstr::find (key);
2456
2457	if (canonical_key == NULL) {
2458	/* 1. There being a field named key on any object
2459	* implies there'd be a shared string to find.
2460	* 2. Since there isn't, no object has this field.
2461	* 3. Therefore, *this* object doesn't have this field.
2462	*/	2579	{
2463	return NULL;	2580	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2464	}	2581	len -= cnt;
2465		2582	p += cnt;
2466	/* This is copied from get_ob_key_link() above -	2583	first = false;
2467	* only 4 lines, and saves the function call overhead.
2468	*/
2469	for (link = op->key_values; link != NULL; link = link->next) {
2470	if (link->key == canonical_key) {
2471	return link->value;
2472	}	2584	}
2473	}	2585	}
		2586
		2587	return desc;
		2588	}
		2589
		2590	// return a suitable string describing an object in enough detail to find it
		2591	const char *
		2592	object::debug_desc (char *info) const
		2593	{
		2594	char flagdesc[512];
		2595	char info2[256 * 4];
		2596	char *p = info;
		2597
		2598	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2599	count,
		2600	uuid.c_str (),
		2601	&name,
		2602	title ? ",title:\"" : "",
		2603	title ? (const char *)title : "",
		2604	title ? "\"" : "",
		2605	flag_desc (flagdesc, 512), type);
		2606
		2607	if (!flag[FLAG_REMOVED] && env)
		2608	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2609
		2610	if (map)
		2611	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2612
		2613	return info;
		2614	}
		2615
		2616	const char *
		2617	object::debug_desc () const
		2618	{
		2619	static char info[3][256 * 4];
		2620	static int info_idx;
		2621
		2622	return debug_desc (info [++info_idx % 3]);
		2623	}
		2624
		2625	struct region *
		2626	object::region () const
		2627	{
		2628	return map ? map->region (x, y)
		2629	: region::default_region ();
		2630	}
		2631
		2632	//+GPL
		2633
		2634	void
		2635	object::open_container (object *new_container)
		2636	{
		2637	if (container == new_container)
2474	return NULL;	2638	return;
2475	}
2476		2639
		2640	object *old_container = container;
2477		2641
2478	/*	2642	if (old_container)
2479	* Updates the canonical_key in op to value.
2480	*
2481	* canonical_key is a shared string (value doesn't have to be).
2482	*
2483	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2484	* keys.
2485	*
2486	* Returns TRUE on success.
2487	*/
2488	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {
2489	key_value * field = NULL, *last=NULL;
2490		2643	{
2491	for (field=op->key_values; field != NULL; field=field->next) {	2644	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2492	if (field->key != canonical_key) {	2645	return;
2493	last = field;	2646
2494	continue;	2647	#if 0
		2648	// remove the "Close old_container" object.
		2649	if (object *closer = old_container->inv)
		2650	if (closer->type == CLOSE_CON)
		2651	closer->destroy ();
		2652	#endif
		2653
		2654	// make sure the container is available
		2655	esrv_send_item (this, old_container);
		2656
		2657	old_container->flag [FLAG_APPLIED] = false;
		2658	container = 0;
		2659
		2660	// client needs item update to make it work, client bug requires this to be separate
		2661	esrv_update_item (UPD_FLAGS, this, old_container);
		2662
		2663	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2664	play_sound (sound_find ("chest_close"));
		2665	}
		2666
		2667	if (new_container)
		2668	{
		2669	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2670	return;
		2671
		2672	// TODO: this does not seem to serve any purpose anymore?
		2673	#if 0
		2674	// insert the "Close Container" object.
		2675	if (archetype *closer = new_container->other_arch)
		2676	{
		2677	object *closer = new_container->other_arch->instance ();
		2678	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2679	new_container->insert (closer);
2495	}	2680	}
		2681	#endif
		2682
		2683	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2684
		2685	// make sure the container is available, client bug requires this to be separate
		2686	esrv_send_item (this, new_container);
		2687
		2688	new_container->flag [FLAG_APPLIED] = true;
		2689	container = new_container;
		2690
		2691	// client needs flag change
		2692	esrv_update_item (UPD_FLAGS, this, new_container);
		2693	esrv_send_inventory (this, new_container);
		2694	play_sound (sound_find ("chest_open"));
2496		2695	}
2497	if (value)	2696	// else if (!old_container->env && contr && contr->ns)
2498	field->value = value;	2697	// contr->ns->floorbox_reset ();
2499	else {	2698	}
2500	/* Basically, if the archetype has this key set,
2501	* we need to store the null value so when we save
2502	* it, we save the empty value so that when we load,
2503	* we get this value back again.
2504	*/
2505	if (get_ob_key_link (&op->arch->clone, canonical_key))
2506	field->value = 0;
2507	else
2508	{
2509	if (last) last->next = field->next;
2510	else op->key_values = field->next;
2511		2699
2512	delete field;	2700	//-GPL
2513	}
2514	}
2515	return TRUE;
2516	}
2517	/* IF we get here, key doesn't exist */
2518		2701
2519	/* No field, we'll have to add it. */	2702	// prefetch some flat area around the player
		2703	static void
		2704	prefetch_surrounding_area (object *op, maptile *map, int range)
		2705	{
		2706	for (maprect *rect = map->split_to_tiles (mapwalk_buf,
		2707	op->x - range , op->y - range ,
		2708	op->x + range + 1, op->y + range + 1);
		2709	rect->m;
		2710	++rect)
2520		2711	{
2521	if (!add_key) {	2712	rect->m->touch ();
2522	return FALSE;	2713	rect->m->activate ();
2523	}
2524	/* There isn't any good reason to store a null
2525	* value in the key/value list. If the archetype has
2526	* this key, then we should also have it, so shouldn't
2527	* be here. If user wants to store empty strings,
2528	* should pass in ""
2529	*/
2530	if (value == NULL) return TRUE;
2531		2714	}
2532	field = new key_value;	2715	}
		2716
		2717	// prefetch a generous area around the player, also up and down
		2718	void
		2719	object::prefetch_surrounding_maps ()
		2720	{
		2721	prefetch_surrounding_area (this, map, 40);
		2722
		2723	if (maptile *m = map->tile_available (TILE_DOWN))
		2724	prefetch_surrounding_area (this, m, 20);
		2725
		2726	if (maptile *m = map->tile_available (TILE_UP))
		2727	prefetch_surrounding_area (this, m, 20);
		2728	}
		2729
		2730	//+GPL
		2731
		2732	object *
		2733	object::force_find (shstr_tmp name)
		2734	{
		2735	/* cycle through his inventory to look for the MARK we want to
		2736	* place
		2737	*/
		2738	for (object *tmp = inv; tmp; tmp = tmp->below)
		2739	if (tmp->type == FORCE && tmp->slaying == name)
		2740	return splay (tmp);
		2741
		2742	return 0;
		2743	}
		2744
		2745	void
		2746	object::force_set_timer (int duration)
		2747	{
		2748	this->duration = 1;
		2749	this->speed_left = -1.f;
		2750
		2751	this->set_speed (duration ? 1.f / duration : 0.f);
		2752	}
		2753
		2754	object *
		2755	object::force_add (shstr_tmp name, int duration)
		2756	{
		2757	if (object *force = force_find (name))
		2758	force->destroy ();
		2759
		2760	object *force = archetype::get (FORCE_NAME);
		2761
		2762	force->slaying = name;
		2763	force->force_set_timer (duration);
		2764	force->flag [FLAG_APPLIED] = true;
		2765
		2766	return insert (force);
		2767	}
		2768
		2769	void
		2770	object::play_sound (faceidx sound) const
		2771	{
		2772	if (!sound)
		2773	return;
		2774
		2775	if (is_on_map ())
		2776	map->play_sound (sound, x, y);
		2777	else if (object *pl = in_player ())
		2778	pl->contr->play_sound (sound);
		2779	}
		2780
		2781	void
		2782	object::say_msg (const char *msg) const
		2783	{
		2784	if (is_on_map ())
		2785	map->say_msg (msg, x, y);
		2786	else if (object *pl = in_player ())
		2787	pl->contr->play_sound (sound);
		2788	}
		2789
		2790	void
		2791	object::make_noise ()
		2792	{
		2793	// we do not model noise in the map, so instead put
		2794	// a temporary light into the noise source
		2795	// could use the map instead, but that's less reliable for our
		2796	// goal, which is to make invisibility a bit harder to exploit
		2797
		2798	// currently only works sensibly for players
		2799	if (!is_player ())
		2800	return;
		2801
		2802	// find old force, or create new one
		2803	object *force = force_find (shstr_noise_force);
		2804
		2805	if (force)
		2806	force->speed_left = -1.f; // patch old speed up
		2807	else
2533		2808	{
2534	field->key = canonical_key;	2809	force = archetype::get (shstr_noise_force);
2535	field->value = value;	2810
2536	/* Usual prepend-addition. */	2811	force->slaying = shstr_noise_force;
2537	field->next = op->key_values;	2812	force->stats.food = 1;
2538	op->key_values = field;	2813	force->speed_left = -1.f;
		2814
		2815	force->set_speed (1.f / 4.f);
		2816	force->flag [FLAG_IS_USED_UP] = true;
		2817	force->flag [FLAG_APPLIED] = true;
		2818
		2819	insert (force);
2539		2820	}
		2821	}
		2822
		2823	void object::change_move_type (MoveType mt)
		2824	{
		2825	if (move_type == mt)
		2826	return;
		2827
		2828	if (is_on_map ())
		2829	{
		2830	// we are on the map, so handle move_on/off effects
		2831	remove ();
		2832	move_type = mt;
		2833	map->insert (this, x, y, this);
		2834	}
		2835	else
		2836	move_type = mt;
		2837	}
		2838
		2839	/* object should be a player.
		2840	* we return the object the player has marked with the 'mark' command
		2841	* below. If no match is found (or object has changed), we return
		2842	* NULL. We leave it up to the calling function to print messages if
		2843	* nothing is found.
		2844	*/
		2845	object *
		2846	object::mark () const
		2847	{
		2848	if (contr && contr->mark && contr->mark->env == this)
		2849	return contr->mark;
		2850	else
2540	return TRUE;	2851	return 0;
2541	}	2852	}
2542		2853
2543	/*	2854	// put marked object first in the inventory
2544	* Updates the key in op to value.	2855	// this is used by identify-like spells so players can influence
2545	*	2856	// the order a bit.
2546	* If add_key is FALSE, this will only update existing keys,	2857	void
2547	* and not add new ones.	2858	object::splay_marked ()
2548	* In general, should be little reason FALSE is ever passed in for add_key
2549	*
2550	* Returns TRUE on success.
2551	*/
2552	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)
2553	{	2859	{
2554	shstr key_ (key);	2860	if (object *marked = mark ())
2555	return set_ob_key_value_s (op, key_, value, add_key);	2861	splay (marked);
2556	}	2862	}
		2863

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