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Comparing deliantra/server/common/object.C (file contents):
Revision 1.13 by root, Sun Sep 3 22:45:55 2006 UTC vs.
Revision 1.187 by root, Tue Sep 4 08:42:55 2007 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3	* "$Id: object.C,v 1.13 2006/09/03 22:45:55 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* Crossfire TRT is free software: you can redistribute it and/or modify
13	it under the terms of the GNU General Public License as published by	9	* it under the terms of the GNU General Public License as published by
14	the Free Software Foundation; either version 2 of the License, or	10	* the Free Software Foundation, either version 3 of the License, or
15	(at your option) any later version.	11	* (at your option) any later version.
16		12	*
17	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	*
25		21	* The authors can be reached via e-mail to <crossfire@schmorp.de>
26	The authors can be reached via e-mail at crossfire-devel@real-time.com
27	*/	22	*/
28		23
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.	24	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying	25	sub/add_weight will transcend the environment updating the carrying
31	variable. */	26	variable. */
32	#include <global.h>	27	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	28	#include <stdio.h>
35	#include <sys/types.h>	29	#include <sys/types.h>
36	#include <sys/uio.h>	30	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	31	#include <object.h>
39	#include <funcpoint.h>	32	#include <funcpoint.h>
40	#include <skills.h>	33	#include <sproto.h>
41	#include <loader.h>	34	#include <loader.h>
42	#ifdef MEMORY_DEBUG	35
43	int nroffreeobjects = 0;	36	#include <bitset>
		37
44	int nrofallocobjects = 0;	38	int nrofallocobjects = 0;
45	#undef OBJ_EXPAND	39	static UUID uuid;
46	#define OBJ_EXPAND 1	40	const uint64 UUID_SKIP = 1<<19;
47	#else
48	object objarray[STARTMAX]; /* All objects, allocated this way at first */
49	int nroffreeobjects = STARTMAX; /* How many OBs allocated and free (free) */
50	int nrofallocobjects = STARTMAX; /* How many OBs allocated (free + used) */
51	#endif
52		41
53	object *objects; /* Pointer to the list of used objects */	42	objectvec objects;
54	object *free_objects; /* Pointer to the list of unused objects */	43	activevec actives;
55	object *active_objects; /* List of active objects that need to be processed */
56		44
57	short freearr_x[SIZEOFFREE]=	45	short freearr_x[SIZEOFFREE] = { 0, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
58	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,
59	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	46	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
60	short freearr_y[SIZEOFFREE]=	47	};
61	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	48	short freearr_y[SIZEOFFREE] = { 0, -1, -1, 0, 1, 1, 1, 0, -1, -2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
62	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	49	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
63	int maxfree[SIZEOFFREE]=	50	};
64	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	51	int maxfree[SIZEOFFREE] = { 0, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45,
65	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	52	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
		53	};
66	int freedir[SIZEOFFREE]= {	54	int freedir[SIZEOFFREE] = {
67	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	55	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,
68	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	56	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		57	};
69		58
		59	static void
		60	write_uuid (void)
		61	{
		62	char filename1[MAX_BUF], filename2[MAX_BUF];
		63
		64	sprintf (filename1, "%s/uuid", settings.localdir);
		65	sprintf (filename2, "%s/uuid~", settings.localdir);
		66
		67	FILE *fp;
		68
		69	if (!(fp = fopen (filename2, "w")))
		70	{
		71	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
		72	return;
		73	}
		74
		75	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
		76	fclose (fp);
		77	rename (filename2, filename1);
		78	}
		79
		80	static void
		81	read_uuid (void)
		82	{
		83	char filename[MAX_BUF];
		84
		85	sprintf (filename, "%s/uuid", settings.localdir);
		86
		87	FILE *fp;
		88
		89	if (!(fp = fopen (filename, "r")))
		90	{
		91	if (errno == ENOENT)
		92	{
		93	LOG (llevInfo, "RESET uid to 1\n");
		94	uuid.seq = 0;
		95	write_uuid ();
		96	return;
		97	}
		98
		99	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		100	_exit (1);
		101	}
		102
		103	int version;
		104	unsigned long long uid;
		105	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)
		106	{
		107	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);
		108	_exit (1);
		109	}
		110
		111	uuid.seq = uid;
		112	write_uuid ();
		113	LOG (llevDebug, "read UID: %" PRId64 "\n", uid);
		114	fclose (fp);
		115	}
		116
		117	UUID
		118	gen_uuid ()
		119	{
		120	UUID uid;
		121
		122	uid.seq = ++uuid.seq;
		123
		124	if (!(uuid.seq & (UUID_SKIP - 1)))
		125	write_uuid ();
		126
		127	return uid;
		128	}
		129
		130	void
		131	init_uuid ()
		132	{
		133	read_uuid ();
		134	}
70		135
71	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	136	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		137	static int
72	static int compare_ob_value_lists_one(const object * wants, const object * has) {	138	compare_ob_value_lists_one (const object *wants, const object *has)
		139	{
73	key_value * wants_field;	140	key_value *wants_field;
74		141
75	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	142	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
76	* objects with lists are rare, and lists stay short. If not, use a	143	* objects with lists are rare, and lists stay short. If not, use a
77	* different structure or at least keep the lists sorted...	144	* different structure or at least keep the lists sorted...
78	*/	145	*/
79		146
80	/* For each field in wants, */	147	/* For each field in wants, */
81	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	148	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		149	{
82	key_value * has_field;	150	key_value *has_field;
83		151
84	/* Look for a field in has with the same key. */	152	/* Look for a field in has with the same key. */
85	has_field = get_ob_key_link(has, wants_field->key);	153	has_field = get_ob_key_link (has, wants_field->key);
		154
		155	if (has_field == NULL)
86		156	{
87	if (has_field == NULL) {
88	/* No field with that name. */	157	/* No field with that name. */
89	return FALSE;	158	return FALSE;
90	}	159	}
91		160
92	/* Found the matching field. */	161	/* Found the matching field. */
93	if (has_field->value != wants_field->value) {	162	if (has_field->value != wants_field->value)
		163	{
94	/* Values don't match, so this half of the comparison is false. */	164	/* Values don't match, so this half of the comparison is false. */
95	return FALSE;	165	return FALSE;
96	}	166	}
97		167
98	/* If we get here, we found a match. Now for the next field in wants. */	168	/* If we get here, we found a match. Now for the next field in wants. */
99	}
100		169	}
		170
101	/* If we get here, every field in wants has a matching field in has. */	171	/* If we get here, every field in wants has a matching field in has. */
102	return TRUE;	172	return TRUE;
103	}	173	}
104		174
105	/* Returns TRUE if ob1 has the same key_values as ob2. */	175	/* Returns TRUE if ob1 has the same key_values as ob2. */
		176	static int
106	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	177	compare_ob_value_lists (const object *ob1, const object *ob2)
		178	{
107	/* However, there may be fields in has which aren't partnered in wants,	179	/* However, there may be fields in has which aren't partnered in wants,
108	* so we need to run the comparison *twice*. :(	180	* so we need to run the comparison *twice*. :(
109	*/	181	*/
110	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	182	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
111	}	183	}
112		184
113	/* Function examines the 2 objects given to it, and returns true if	185	/* Function examines the 2 objects given to it, and returns true if
114	* they can be merged together.	186	* they can be merged together.
115	*	187	*
116	* Note that this function appears a lot longer than the macro it	188	* Note that this function appears a lot longer than the macro it
117	* replaces - this is mostly for clarity - a decent compiler should hopefully	189	* replaces - this is mostly for clarity - a decent compiler should hopefully
118	* reduce this to the same efficiency.	190	* reduce this to the same efficiency.
119	*	191	*
120	* Check nrof variable *before* calling CAN_MERGE()	192	* Check nrof variable *before* calling can_merge()
121	*	193	*
122	* Improvements made with merge: Better checking on potion, and also	194	* Improvements made with merge: Better checking on potion, and also
123	* check weight	195	* check weight
124	*/	196	*/
125		197	bool object::can_merge_slow (object *ob1, object *ob2)
126	int CAN_MERGE(object *ob1, object *ob2) {	198	{
127
128	/* A couple quicksanity checks */	199	/* A couple quicksanity checks */
129	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	200	if (ob1 == ob2
		201	|| ob1->type != ob2->type
		202	|| ob1->speed != ob2->speed
		203	|| ob1->value != ob2->value
		204	|| ob1->name != ob2->name)
		205	return 0;
130		206
131	if (ob1->speed != ob2->speed) return 0;	207	//TODO: this ain't working well, use nicer and correct overflow check
132	/* Note sure why the following is the case - either the object has to	208	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
133	* be animated or have a very low speed. Is this an attempted monster	209	* value could not be stored in a sint32 (which unfortunately sometimes is
134	* check?	210	* used to store nrof).
135	*/	211	*/
136	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	212	if (ob1->nrof + ob2->nrof >= 1UL << 31)
		213	return 0;
		214
		215	/* If the objects have been identified, set the BEEN_APPLIED flag.
		216	* This is to the comparison of the flags below will be OK. We
		217	* just can't ignore the been applied or identified flags, as they
		218	* are not equal - just if it has been identified, the been_applied
		219	* flags lose any meaning.
		220	*/
		221	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		222	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		223
		224	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		225	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		226
		227	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
		228	|| ob1->arch != ob2->arch
		229	|| ob1->name != ob2->name
		230	|| ob1->title != ob2->title
		231	|| ob1->msg != ob2->msg
		232	|| ob1->weight != ob2->weight
		233	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		234	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
		235	|| ob1->attacktype != ob2->attacktype
		236	|| ob1->magic != ob2->magic
		237	|| ob1->slaying != ob2->slaying
		238	|| ob1->skill != ob2->skill
		239	|| ob1->value != ob2->value
		240	|| ob1->animation_id != ob2->animation_id
		241	|| ob1->client_type != ob2->client_type
		242	|| ob1->materialname != ob2->materialname
		243	|| ob1->lore != ob2->lore
		244	|| ob1->subtype != ob2->subtype
		245	|| ob1->move_type != ob2->move_type
		246	|| ob1->move_block != ob2->move_block
		247	|| ob1->move_allow != ob2->move_allow
		248	|| ob1->move_on != ob2->move_on
		249	|| ob1->move_off != ob2->move_off
		250	|| ob1->move_slow != ob2->move_slow
		251	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
		252	return 0;
		253
		254	/* This is really a spellbook check - really, we should
		255	* check all objects in the inventory.
		256	*/
		257	if (ob1->inv || ob2->inv)
		258	{
		259	/* if one object has inventory but the other doesn't, not equiv */
		260	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
137	return 0;	261	return 0;
138		262
139	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	263	/* Now check to see if the two inventory objects could merge */
140	* value could not be stored in a sint32 (which unfortunately sometimes is	264	if (!object::can_merge (ob1->inv, ob2->inv))
141	* used to store nrof).
142	*/
143	if (ob1->nrof+ob2->nrof >= 1UL<<31)
144	return 0;	265	return 0;
145		266
146	/* This is really a spellbook check - really, we should
147	* check all objects in the inventory.
148	*/
149	if (ob1->inv || ob2->inv) {
150	/* if one object has inventory but the other doesn't, not equiv */
151	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
152
153	/* Now check to see if the two inventory objects could merge */
154	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
155
156	/* inventory ok - still need to check rest of this object to see	267	/* inventory ok - still need to check rest of this object to see
157	* if it is valid.	268	* if it is valid.
158	*/	269	*/
159	}	270	}
160		271
161	/* If the objects have been identified, set the BEEN_APPLIED flag.
162	* This is to the comparison of the flags below will be OK. We
163	* just can't ignore the been applied or identified flags, as they
164	* are not equal - just if it has been identified, the been_applied
165	* flags lose any meaning.
166	*/
167	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
168	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
169
170	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
171	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
172
173
174	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
175	* being locked in inventory should prevent merging.
176	* 0x4 in flags3 is CLIENT_SENT
177	*/
178	if ((ob1->arch != ob2->arch) ||
179	(ob1->flags[0] != ob2->flags[0]) ||
180	(ob1->flags[1] != ob2->flags[1]) ||
181	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
182	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
183	(ob1->name != ob2->name) ||
184	(ob1->title != ob2->title) ||
185	(ob1->msg != ob2->msg) ||
186	(ob1->weight != ob2->weight) ||
187	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
188	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
189	(ob1->attacktype != ob2->attacktype) ||
190	(ob1->magic != ob2->magic) ||
191	(ob1->slaying != ob2->slaying) ||
192	(ob1->skill != ob2->skill) ||
193	(ob1->value != ob2->value) ||
194	(ob1->animation_id != ob2->animation_id) ||
195	(ob1->client_type != ob2->client_type) ||
196	(ob1->materialname != ob2->materialname) ||
197	(ob1->lore != ob2->lore) ||
198	(ob1->subtype != ob2->subtype) ||
199	(ob1->move_type != ob2->move_type) ||
200	(ob1->move_block != ob2->move_block) ||
201	(ob1->move_allow != ob2->move_allow) ||
202	(ob1->move_on != ob2->move_on) ||
203	(ob1->move_off != ob2->move_off) ||
204	(ob1->move_slow != ob2->move_slow) ||
205	(ob1->move_slow_penalty != ob2->move_slow_penalty)
206	)
207	return 0;
208
209	/* Don't merge objects that are applied. With the new 'body' code,	272	/* Don't merge objects that are applied. With the new 'body' code,
210	* it is possible for most any character to have more than one of	273	* it is possible for most any character to have more than one of
211	* some items equipped, and we don't want those to merge.	274	* some items equipped, and we don't want those to merge.
212	*/	275	*/
213	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))	276	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		277	return 0;
		278
		279	/* Note sure why the following is the case - either the object has to
		280	* be animated or have a very low speed. Is this an attempted monster
		281	* check?
		282	*/
		283	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
		284	return 0;
		285
		286	switch (ob1->type)
		287	{
		288	case SCROLL:
		289	if (ob1->level != ob2->level)
		290	return 0;
		291	break;
		292	}
		293
		294	if (ob1->key_values != NULL || ob2->key_values != NULL)
		295	{
		296	/* At least one of these has key_values. */
		297	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
		298	/* One has fields, but the other one doesn't. */
214	return 0;	299	return 0;
		300	else if (!compare_ob_value_lists (ob1, ob2))
		301	return 0;
		302	}
215		303
216	switch (ob1->type) {	304	if (ob1->self || ob2->self)
217	case SCROLL:
218	if (ob1->level != ob2->level) return 0;
219	break;
220
221	}	305	{
222	if (ob1->key_values != NULL || ob2->key_values != NULL) {	306	ob1->optimise ();
223	/* At least one of these has key_values. */	307	ob2->optimise ();
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {	308
225	/* One has fields, but the other one doesn't. */	309	if (ob1->self || ob2->self)
		310	if (!cfperl_can_merge (ob1, ob2))
226	return 0;	311	return 0;
227	} else if (!compare_ob_value_lists(ob1, ob2)) {
228	return 0;
229	}
230	}	312	}
231		313
232	/* Everything passes, must be OK. */	314	/* Everything passes, must be OK. */
233	return 1;	315	return 1;
234	}	316	}
235		317
236	/*	318	/*
237	* sum_weight() is a recursive function which calculates the weight	319	* sum_weight() is a recursive function which calculates the weight
238	* an object is carrying. It goes through in figures out how much	320	* an object is carrying. It goes through in figures out how much
239	* containers are carrying, and sums it up.	321	* containers are carrying, and sums it up.
240	*/	322	*/
241	signed long sum_weight(object *op) {	323	long
		324	sum_weight (object *op)
		325	{
242	signed long sum;	326	long sum;
243	object *inv;	327	object *inv;
		328
244	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	329	for (sum = 0, inv = op->inv; inv; inv = inv->below)
		330	{
245	if (inv->inv)	331	if (inv->inv)
246	sum_weight(inv);	332	sum_weight (inv);
		333
247	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	334	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
248	}	335	}
		336
249	if (op->type == CONTAINER && op->stats.Str)	337	if (op->type == CONTAINER && op->stats.Str)
250	sum = (sum * (100 - op->stats.Str))/100;	338	sum = (sum * (100 - op->stats.Str)) / 100;
		339
251	if(op->carrying != sum)	340	if (op->carrying != sum)
252	op->carrying = sum;	341	op->carrying = sum;
		342
253	return sum;	343	return sum;
254	}	344	}
255		345
256	/**	346	/**
257	* Return the outermost environment object for a given object.	347	* Return the outermost environment object for a given object.
258	*/	348	*/
259		349
		350	object *
260	object *object_get_env_recursive (object *op) {	351	object_get_env_recursive (object *op)
		352	{
261	while (op->env != NULL)	353	while (op->env != NULL)
262	op = op->env;	354	op = op->env;
263	return op;	355	return op;
264	}
265
266	/*
267	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
268	* a better check. We basically keeping traversing up until we can't
269	* or find a player.
270	*/
271
272	object *is_player_inv (object *op) {
273	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
274	if (op->env==op)
275	op->env = NULL;
276	return op;
277	}	356	}
278		357
279	/*	358	/*
280	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	359	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
281	* Some error messages.	360	* Some error messages.
282	* The result of the dump is stored in the static global errmsg array.	361	* The result of the dump is stored in the static global errmsg array.
283	*/	362	*/
284		363	char *
285	void dump_object2(object *op) {
286	errmsg[0] = 0;
287	return;
288	//TODO//D#d#
289	#if 0
290	char *cp;
291	/* object *tmp;*/
292
293	if(op->arch!=NULL) {
294	strcat(errmsg,"arch ");
295	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
296	strcat(errmsg,"\n");
297	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
298	strcat(errmsg,cp);
299	#if 0
300	/* Don't dump player diffs - they are too long, mostly meaningless, and
301	* will overflow the buffer.
302	* Changed so that we don't dump inventory either. This may
303	* also overflow the buffer.
304	*/
305	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	for (tmp=op->inv; tmp; tmp=tmp->below)
308	dump_object2(tmp);
309	#endif
310	strcat(errmsg,"end\n");
311	} else {
312	strcat(errmsg,"Object ");
313	if (op->name==NULL) strcat(errmsg, "(null)");
314	else strcat(errmsg,op->name);
315	strcat(errmsg,"\n");
316	#if 0
317	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
318	strcat(errmsg,cp);
319	for (tmp=op->inv; tmp; tmp=tmp->below)
320	dump_object2(tmp);
321	#endif
322	strcat(errmsg,"end\n");
323	}
324	#endif
325	}
326
327	/*
328	* Dumps an object. Returns output in the static global errmsg array.
329	*/
330
331	void dump_object(object *op) {	364	dump_object (object *op)
332	if(op==NULL) {	365	{
333	strcpy(errmsg,"[NULL pointer]");	366	if (!op)
334	return;	367	return strdup ("[NULLOBJ]");
335	}
336	errmsg[0]='\0';
337	dump_object2(op);
338	}
339		368
340	void dump_all_objects(void) {	369	object_freezer freezer;
341	object *op;	370	op->write (freezer);
342	for(op=objects;op!=NULL;op=op->next) {	371	return freezer.as_string ();
343	dump_object(op);
344	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
345	}
346	}	372	}
347		373
348	/*	374	/*
349	* get_nearest_part(multi-object, object 2) returns the part of the	375	* get_nearest_part(multi-object, object 2) returns the part of the
350	* multi-object 1 which is closest to the second object.	376	* multi-object 1 which is closest to the second object.
351	* If it's not a multi-object, it is returned.	377	* If it's not a multi-object, it is returned.
352	*/	378	*/
353		379	object *
354	object *get_nearest_part(object *op, const object *pl) {	380	get_nearest_part (object *op, const object *pl)
		381	{
355	object *tmp,*closest;	382	object *tmp, *closest;
356	int last_dist,i;	383	int last_dist, i;
		384
357	if(op->more==NULL)	385	if (op->more == NULL)
358	return op;	386	return op;
359	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	387	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
360	if((i=distance(tmp,pl))<last_dist)	388	if ((i = distance (tmp, pl)) < last_dist)
361	closest=tmp,last_dist=i;	389	closest = tmp, last_dist = i;
362	return closest;	390	return closest;
363	}	391	}
364		392
365	/*	393	/*
366	* Returns the object which has the count-variable equal to the argument.	394	* Returns the object which has the count-variable equal to the argument.
367	*/	395	*/
368		396	object *
369	object *find_object(tag_t i) {	397	find_object (tag_t i)
370	object *op;	398	{
371	for(op=objects;op!=NULL;op=op->next)	399	for_all_objects (op)
372	if(op->count==i)	400	if (op->count == i)
373	break;
374	return op;	401	return op;
		402
		403	return 0;
375	}	404	}
376		405
377	/*	406	/*
378	* Returns the first object which has a name equal to the argument.	407	* Returns the first object which has a name equal to the argument.
379	* Used only by the patch command, but not all that useful.	408	* Used only by the patch command, but not all that useful.
380	* Enables features like "patch <name-of-other-player> food 999"	409	* Enables features like "patch <name-of-other-player> food 999"
381	*/	410	*/
382		411	object *
383	object *find_object_name(const char *str) {	412	find_object_name (const char *str)
384	const char *name = shstr::find (str);	413	{
		414	shstr_cmp str_ (str);
385	object *op;	415	object *op;
386	for(op=objects;op!=NULL;op=op->next)	416
		417	for_all_objects (op)
387	if(&op->name == name)	418	if (op->name == str_)
388	break;	419	break;
389		420
390	return op;	421	return op;
391	}	422	}
392		423
		424	void
393	void free_all_object_data(void) {	425	free_all_object_data ()
394	#ifdef MEMORY_DEBUG
395	object *op, *next;
396
397	for (op=free_objects; op!=NULL; ) {
398	next=op->next;
399	free(op);
400	nrofallocobjects--;
401	nroffreeobjects--;
402	op=next;
403	}
404	#endif
405	LOG(llevDebug,"%d allocated objects, %d free objects, STARMAX=%d\n",
406	nrofallocobjects, nroffreeobjects,STARTMAX);
407	}
408
409	/*
410	* Returns the object which this object marks as being the owner.
411	* A id-scheme is used to avoid pointing to objects which have been
412	* freed and are now reused. If this is detected, the owner is
413	* set to NULL, and NULL is returned.
414	* Changed 2004-02-12 - if the player is setting at the play again
415	* prompt, he is removed, and we don't want to treat him as an owner of
416	* anything, so check removed flag. I don't expect that this should break
417	* anything - once an object is removed, it is basically dead anyways.
418	*/
419
420	object *get_owner(object *op) {
421	if(op->owner==NULL)
422	return NULL;
423
424	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
425	op->owner->count==op->ownercount)
426	return op->owner;
427
428	op->owner=NULL;
429	op->ownercount=0;
430	return NULL;
431	}
432
433	void clear_owner(object *op)
434	{	426	{
435	if (!op) return;	427	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
436
437	if (op->owner && op->ownercount == op->owner->count)
438	op->owner->refcount--;
439
440	op->owner = NULL;
441	op->ownercount = 0;
442	}	428	}
443
444
445		429
446	/*	430	/*
447	* Sets the owner and sets the skill and exp pointers to owner's current	431	* Sets the owner and sets the skill and exp pointers to owner's current
448	* skill and experience objects.	432	* skill and experience objects.
449	*/	433	* ACTUALLY NO! investigate! TODO
450	void set_owner (object *op, object *owner)
451	{
452	if(owner==NULL||op==NULL)
453	return;
454
455	/* next line added to allow objects which own objects */
456	/* Add a check for ownercounts in here, as I got into an endless loop
457	* with the fireball owning a poison cloud which then owned the
458	* fireball. I believe that was caused by one of the objects getting
459	* freed and then another object replacing it. Since the ownercounts
460	* didn't match, this check is valid and I believe that cause is valid.
461	*/
462	while (owner->owner && owner!=owner->owner &&
463	owner->ownercount==owner->owner->count) owner=owner->owner;
464
465	/* IF the owner still has an owner, we did not resolve to a final owner.
466	* so lets not add to that.
467	*/
468	if (owner->owner) return;
469
470	op->owner=owner;
471
472	op->ownercount=owner->count;
473	owner->refcount++;
474
475	}
476
477	/* Set the owner to clone's current owner and set the skill and experience
478	* objects to clone's objects (typically those objects that where the owner's
479	* current skill and experience objects at the time when clone's owner was
480	* set - not the owner's current skill and experience objects).
481	*	434	*/
482	* Use this function if player created an object (e.g. fire bullet, swarm	435	void
483	* spell), and this object creates further objects whose kills should be	436	object::set_owner (object *owner)
484	* accounted for the player's original skill, even if player has changed
485	* skills meanwhile.
486	*/
487	void copy_owner (object *op, object *clone)
488	{	437	{
489	object *owner = get_owner (clone);	438	// allow objects which own objects
490	if (owner == NULL) {	439	if (owner)
491	/* players don't have owners - they own themselves. Update	440	while (owner->owner)
492	* as appropriate.	441	owner = owner->owner;
		442
		443	this->owner = owner;
		444	}
		445
		446	int
		447	object::slottype () const
		448	{
		449	if (type == SKILL)
		450	{
		451	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
		452	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		453	}
		454	else
		455	{
		456	if (slot [body_combat].info) return slot_combat;
		457	if (slot [body_range ].info) return slot_ranged;
		458	}
		459
		460	return slot_none;
		461	}
		462
		463	bool
		464	object::change_weapon (object *ob)
		465	{
		466	if (current_weapon == ob)
		467	return true;
		468
		469	if (chosen_skill)
		470	chosen_skill->flag [FLAG_APPLIED] = false;
		471
		472	current_weapon = ob;
		473	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		474
		475	if (chosen_skill)
		476	chosen_skill->flag [FLAG_APPLIED] = true;
		477
		478	update_stats ();
		479
		480	if (ob)
		481	{
		482	// now check wether any body locations became invalid, in which case
		483	// we cannot apply the weapon at the moment.
		484	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		485	if (slot[i].used < 0)
493	*/	486	{
494	if (clone->type == PLAYER) owner=clone;	487	current_weapon = chosen_skill = 0;
495	else return;	488	update_stats ();
		489
		490	new_draw_info_format (NDI_UNIQUE, 0, this,
		491	"You try to balance all your items at once, "
		492	"but the %s is just too much for your body. "
		493	"[You need to unapply some items first.]", &ob->name);
		494	return false;
		495	}
		496
		497	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		498	}
		499	else
		500	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		501
		502	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
496	}	503	{
497	set_owner(op, owner);	504	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		505	&name, ob->debug_desc ());
		506	return false;
		507	}
498		508
499	}	509	return true;
500
501	/*
502	* Resets vital variables in an object
503	*/
504
505	void reset_object(object *op) {
506
507	op->name = NULL;
508	op->name_pl = NULL;
509	op->title = NULL;
510	op->race = NULL;
511	op->slaying = NULL;
512	op->skill = NULL;
513	op->msg = NULL;
514	op->materialname = NULL;
515	op->lore = NULL;
516	clear_object(op);
517	}	510	}
518		511
519	/* Zero the key_values on op, decrementing the shared-string	512	/* Zero the key_values on op, decrementing the shared-string
520	* refcounts and freeing the links.	513	* refcounts and freeing the links.
521	*/	514	*/
		515	static void
522	static void free_key_values(object * op)	516	free_key_values (object *op)
523	{	517	{
524	for (key_value *i = op->key_values; i != 0; )	518	for (key_value *i = op->key_values; i; )
525	{	519	{
526	key_value *next = i->next;	520	key_value *next = i->next;
527	delete i;	521	delete i;
		522
528	i = next;	523	i = next;
529	}	524	}
530		525
531	op->key_values = 0;	526	op->key_values = 0;
532	}	527	}
533		528
534	/*	529	object &
535	* clear_object() frees everything allocated by an object, and also	530	object::operator =(const object &src)
536	* clears all variables and flags to default settings.
537	*/
538
539	void clear_object(object *op)
540	{	531	{
541	op->clear ();	532	bool is_freed = flag [FLAG_FREED];
		533	bool is_removed = flag [FLAG_REMOVED];
542		534
543	free_key_values (op);	535	*(object_copy *)this = src;
544		536
545	/* the memset will clear all these values for us, but we need	537	flag [FLAG_FREED] = is_freed;
546	* to reduce the refcount on them.	538	flag [FLAG_REMOVED] = is_removed;
547	*/
548	op->name = 0;
549	op->name_pl = 0;
550	op->title = 0;
551	op->race = 0;
552	op->slaying = 0;
553	op->skill = 0;
554	op->msg = 0;
555	op->lore = 0;
556	op->materialname = 0;
557
558	memset((void*)op, 0, sizeof (object_special));
559	/* Below here, we clear things that are not done by the memset,
560	* or set default values that are not zero.
561	*/
562	/* This is more or less true */
563	SET_FLAG (op, FLAG_REMOVED);
564
565	op->contr = NULL;
566	op->below = NULL;
567	op->above = NULL;
568	op->inv = NULL;
569	op->container=NULL;
570	op->env=NULL;
571	op->more=NULL;
572	op->head=NULL;
573	op->map=NULL;
574	op->refcount=0;
575	op->active_next = NULL;
576	op->active_prev = NULL;
577	/* What is not cleared is next, prev, and count */
578
579	op->expmul=1.0;
580	op->face = blank_face;
581	op->attacked_by_count = (tag_t) -1;
582
583	if (settings.casting_time)
584	op->casting_time = -1;
585	}
586
587	/*
588	* copy object first frees everything allocated by the second object,
589	* and then copies the contends of the first object into the second
590	* object, allocating what needs to be allocated. Basically, any
591	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
592	* if the first object is freed, the pointers in the new object
593	* will point at garbage.
594	*/
595
596	void copy_object(object *op2, object *op)
597	{
598	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);
599
600	op->clear ();
601
602	free_key_values (op);
603
604	*(object_special *)op = *(object_special *)op2;
605	op2->clone (op);
606
607	if (is_freed) SET_FLAG(op,FLAG_FREED);
608	if (is_removed) SET_FLAG(op,FLAG_REMOVED);
609
610	if (op2->speed < 0)
611	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
612		539
613	/* Copy over key_values, if any. */	540	/* Copy over key_values, if any. */
614	if (op2->key_values != NULL) {	541	if (src.key_values)
		542	{
615	key_value *tail = NULL;	543	key_value *tail = 0;
616	key_value *i;
617
618	op->key_values = NULL;	544	key_values = 0;
619		545
620	for (i = op2->key_values; i != NULL; i = i->next)	546	for (key_value *i = src.key_values; i; i = i->next)
621	{	547	{
622	key_value *new_link = new key_value;	548	key_value *new_link = new key_value;
623		549
624	new_link->next = NULL;	550	new_link->next = 0;
625	new_link->key = i->key;	551	new_link->key = i->key;
626	new_link->value = i->value;	552	new_link->value = i->value;
627		553
628	/* Try and be clever here, too. */	554	/* Try and be clever here, too. */
629	if (op->key_values == NULL)	555	if (!key_values)
630	{	556	{
631	op->key_values = new_link;	557	key_values = new_link;
632	tail = new_link;	558	tail = new_link;
633	}	559	}
634	else	560	else
635	{	561	{
636	tail->next = new_link;	562	tail->next = new_link;
637	tail = new_link;	563	tail = new_link;
638	}	564	}
639	}	565	}
640	}	566	}
641
642	update_ob_speed (op);
643	}	567	}
644		568
645	/*	569	/*
646	* expand_objects() allocates more objects for the list of unused objects.	570	* copy_to first frees everything allocated by the dst object,
647	* It is called from get_object() if the unused list is empty.	571	* and then copies the contents of itself into the second
		572	* object, allocating what needs to be allocated. Basically, any
		573	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
		574	* if the first object is freed, the pointers in the new object
		575	* will point at garbage.
		576	*/
		577	void
		578	object::copy_to (object *dst)
		579	{
		580	*dst = *this;
		581
		582	if (speed < 0)
		583	dst->speed_left -= rndm ();
		584
		585	dst->set_speed (dst->speed);
		586	}
		587
		588	void
		589	object::instantiate ()
		590	{
		591	if (!uuid.seq) // HACK
		592	uuid = gen_uuid ();
		593
		594	speed_left = -0.1f;
		595	/* copy the body_info to the body_used - this is only really
		596	* need for monsters, but doesn't hurt to do it for everything.
		597	* by doing so, when a monster is created, it has good starting
		598	* values for the body_used info, so when items are created
		599	* for it, they can be properly equipped.
648	*/	600	*/
		601	for (int i = NUM_BODY_LOCATIONS; i--; )
		602	slot[i].used = slot[i].info;
649		603
650	void expand_objects(void) {	604	attachable::instantiate ();
651	int i;
652	object *obj;
653	obj = new object [OBJ_EXPAND];
654
655	free_objects=obj;
656	obj[0].prev=NULL;
657	obj[0].next= &obj[1],
658	SET_FLAG(&(obj[0]), FLAG_REMOVED);
659	SET_FLAG(&(obj[0]), FLAG_FREED);
660
661	for(i=1;i<OBJ_EXPAND-1;i++) {
662	obj[i].next= &obj[i+1],
663	obj[i].prev= &obj[i-1],
664	SET_FLAG(&(obj[i]), FLAG_REMOVED);
665	SET_FLAG(&(obj[i]), FLAG_FREED);
666	}
667	obj[OBJ_EXPAND-1].prev= &obj[OBJ_EXPAND-2],
668	obj[OBJ_EXPAND-1].next=NULL,
669	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_REMOVED);
670	SET_FLAG(&(obj[OBJ_EXPAND-1]), FLAG_FREED);
671
672	nrofallocobjects += OBJ_EXPAND;
673	nroffreeobjects += OBJ_EXPAND;
674	}	605	}
675		606
676	/*
677	* get_object() grabs an object from the list of unused objects, makes
678	* sure it is initialised, and returns it.
679	* If there are no free objects, expand_objects() is called to get more.
680	*/
681
682	object *get_object(void)
683	{
684	object *op;	607	object *
685		608	object::clone ()
686	if(free_objects==NULL)	609	{
687	expand_objects();	610	object *neu = create ();
688		611	copy_to (neu);
689	op = free_objects;
690
691	if (!QUERY_FLAG (op, FLAG_FREED))
692	LOG(llevError,"Fatal: Getting busy object.\n");
693
694	free_objects = op->next;
695
696	if (free_objects != NULL)
697	free_objects->prev = NULL;
698
699	op->count= ++ob_count;
700	op->name=NULL;
701	op->name_pl=NULL;
702	op->title=NULL;
703	op->race=NULL;
704	op->slaying=NULL;
705	op->skill = NULL;
706	op->lore=NULL;
707	op->msg=NULL;
708	op->materialname=NULL;
709	op->next=objects;
710	op->prev=NULL;
711	op->active_next = NULL;
712	op->active_prev = NULL;
713	if(objects!=NULL)
714	objects->prev=op;
715	objects=op;
716	clear_object(op);
717	SET_FLAG(op,FLAG_REMOVED);
718	nroffreeobjects--;
719	return op;	612	return neu;
720	}	613	}
721		614
722	/*	615	/*
723	* If an object with the IS_TURNABLE() flag needs to be turned due	616	* If an object with the IS_TURNABLE() flag needs to be turned due
724	* to the closest player being on the other side, this function can	617	* to the closest player being on the other side, this function can
725	* be called to update the face variable, _and_ how it looks on the map.	618	* be called to update the face variable, _and_ how it looks on the map.
726	*/	619	*/
727		620	void
728	void update_turn_face(object *op) {	621	update_turn_face (object *op)
		622	{
729	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	623	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
730	return;	624	return;
		625
731	SET_ANIMATION(op, op->direction);	626	SET_ANIMATION (op, op->direction);
732	update_object(op,UP_OBJ_FACE);	627	update_object (op, UP_OBJ_FACE);
733	}	628	}
734		629
735	/*	630	/*
736	* Updates the speed of an object. If the speed changes from 0 to another	631	* Updates the speed of an object. If the speed changes from 0 to another
737	* value, or vice versa, then add/remove the object from the active list.	632	* value, or vice versa, then add/remove the object from the active list.
738	* This function needs to be called whenever the speed of an object changes.	633	* This function needs to be called whenever the speed of an object changes.
739	*/	634	*/
740		635	void
741	void update_ob_speed(object *op) {	636	object::set_speed (float speed)
742	extern int arch_init;	637	{
743		638	if (flag [FLAG_FREED] && speed)
744	/* No reason putting the archetypes objects on the speed list,	639	{
745	* since they never really need to be updated.
746	*/
747
748	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
749	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	640	LOG (llevError, "Object %s is freed but has speed.\n", &name);
750	#ifdef MANY_CORES
751	abort();
752	#else
753	op->speed = 0;	641	speed = 0;
754	#endif
755	}	642	}
756	if (arch_init) {
757	return;
758	}
759	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
760	/* If already on active list, don't do anything */
761	if (op->active_next || op->active_prev || op==active_objects)
762	return;
763		643
764	/* process_events() expects us to insert the object at the beginning	644	this->speed = speed;
765	* of the list. */	645
766	op->active_next = active_objects;	646	if (has_active_speed ())
767	if (op->active_next!=NULL)	647	activate ();
768	op->active_next->active_prev = op;
769	active_objects = op;
770	}
771	else {	648	else
772	/* If not on the active list, nothing needs to be done */	649	deactivate ();
773	if (!op->active_next && !op->active_prev && op!=active_objects)
774	return;
775
776	if (op->active_prev==NULL) {
777	active_objects = op->active_next;
778	if (op->active_next!=NULL)
779	op->active_next->active_prev = NULL;
780	}
781	else {
782	op->active_prev->active_next = op->active_next;
783	if (op->active_next)
784	op->active_next->active_prev = op->active_prev;
785	}
786	op->active_next = NULL;
787	op->active_prev = NULL;
788	}
789	}	650	}
790		651
791	/* This function removes object 'op' from the list of active
792	* objects.
793	* This should only be used for style maps or other such
794	* reference maps where you don't want an object that isn't
795	* in play chewing up cpu time getting processed.
796	* The reverse of this is to call update_ob_speed, which
797	* will do the right thing based on the speed of the object.
798	*/
799	void remove_from_active_list(object *op)
800	{
801	/* If not on the active list, nothing needs to be done */
802	if (!op->active_next && !op->active_prev && op!=active_objects)
803	return;
804
805	if (op->active_prev==NULL) {
806	active_objects = op->active_next;
807	if (op->active_next!=NULL)
808	op->active_next->active_prev = NULL;
809	}
810	else {
811	op->active_prev->active_next = op->active_next;
812	if (op->active_next)
813	op->active_next->active_prev = op->active_prev;
814	}
815	op->active_next = NULL;
816	op->active_prev = NULL;
817	}
818
819	/*	652	/*
820	* update_object() updates the array which represents the map.	653	* update_object() updates the the map.
821	* It takes into account invisible objects (and represent squares covered	654	* It takes into account invisible objects (and represent squares covered
822	* by invisible objects by whatever is below them (unless it's another	655	* by invisible objects by whatever is below them (unless it's another
823	* invisible object, etc...)	656	* invisible object, etc...)
824	* If the object being updated is beneath a player, the look-window	657	* If the object being updated is beneath a player, the look-window
825	* of that player is updated (this might be a suboptimal way of	658	* of that player is updated (this might be a suboptimal way of
826	* updating that window, though, since update_object() is called _often_)	659	* updating that window, though, since update_object() is called _often_)
827	*	660	*
828	* action is a hint of what the caller believes need to be done.	661	* action is a hint of what the caller believes need to be done.
829	* For example, if the only thing that has changed is the face (due to
830	* an animation), we don't need to call update_position until that actually
831	* comes into view of a player. OTOH, many other things, like addition/removal
832	* of walls or living creatures may need us to update the flags now.
833	* current action are:	662	* current action are:
834	* UP_OBJ_INSERT: op was inserted	663	* UP_OBJ_INSERT: op was inserted
835	* UP_OBJ_REMOVE: op was removed	664	* UP_OBJ_REMOVE: op was removed
836	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	665	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
837	* as that is easier than trying to look at what may have changed.	666	* as that is easier than trying to look at what may have changed.
838	* UP_OBJ_FACE: only the objects face has changed.	667	* UP_OBJ_FACE: only the objects face has changed.
839	*/	668	*/
840		669	void
841	void update_object(object *op, int action) {	670	update_object (object *op, int action)
842	int update_now=0, flags;	671	{
843	MoveType move_on, move_off, move_block, move_slow;
844
845	if (op == NULL) {	672	if (op == NULL)
		673	{
846	/* this should never happen */	674	/* this should never happen */
847	LOG(llevDebug,"update_object() called for NULL object.\n");	675	LOG (llevDebug, "update_object() called for NULL object.\n");
848	return;	676	return;
849	}
850		677	}
851	if(op->env!=NULL) {	678
		679	if (op->env)
		680	{
852	/* Animation is currently handled by client, so nothing	681	/* Animation is currently handled by client, so nothing
853	* to do in this case.	682	* to do in this case.
854	*/	683	*/
855	return;	684	return;
856	}	685	}
857		686
858	/* If the map is saving, don't do anything as everything is	687	/* If the map is saving, don't do anything as everything is
859	* going to get freed anyways.	688	* going to get freed anyways.
860	*/	689	*/
861	if (!op->map || op->map->in_memory == MAP_SAVING) return;	690	if (!op->map || op->map->in_memory == MAP_SAVING)
862		691	return;
		692
863	/* make sure the object is within map boundaries */	693	/* make sure the object is within map boundaries */
864	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	694	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
865	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	695	{
866	LOG(llevError,"update_object() called for object out of map!\n");	696	LOG (llevError, "update_object() called for object out of map!\n");
867	#ifdef MANY_CORES	697	#ifdef MANY_CORES
868	abort();	698	abort ();
869	#endif	699	#endif
870	return;	700	return;
871	}
872		701	}
873	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
874	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
875	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
876	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
877	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
878	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
879		702
		703	mapspace &m = op->ms ();
		704
		705	if (!(m.flags_ & P_UPTODATE))
		706	/* nop */;
880	if (action == UP_OBJ_INSERT) {	707	else if (action == UP_OBJ_INSERT)
		708	{
		709	// this is likely overkill, TODO: revisit (schmorp)
881	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	710	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
882	update_now=1;
883
884	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	711	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
885	update_now=1;	712	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
886		713	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		714	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
887	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	715	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
888	update_now=1;	716	|| (m.move_on | op->move_on ) != m.move_on
889
890	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
891	update_now=1;
892
893	if ((move_on | op->move_on) != move_on) update_now=1;
894	if ((move_off | op->move_off) != move_off) update_now=1;	717	|| (m.move_off | op->move_off ) != m.move_off
		718	|| (m.move_slow | op->move_slow) != m.move_slow
895	/* This isn't perfect, but I don't expect a lot of objects to	719	/* This isn't perfect, but I don't expect a lot of objects to
896	* to have move_allow right now.	720	* to have move_allow right now.
897	*/	721	*/
898	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	722	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
899	update_now=1;	723	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
900	if ((move_slow | op->move_slow) != move_slow) update_now=1;	724	m.flags_ = 0;
901	}	725	}
902	/* if the object is being removed, we can't make intelligent	726	/* if the object is being removed, we can't make intelligent
903	* decisions, because remove_ob can't really pass the object	727	* decisions, because remove_ob can't really pass the object
904	* that is being removed.	728	* that is being removed.
905	*/	729	*/
906	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	730	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
907	update_now=1;	731	m.flags_ = 0;
908	} else if (action == UP_OBJ_FACE) {	732	else if (action == UP_OBJ_FACE)
909	/* Nothing to do for that case */	733	/* Nothing to do for that case */ ;
910	}
911	else {	734	else
912	LOG(llevError,"update_object called with invalid action: %d\n", action);	735	LOG (llevError, "update_object called with invalid action: %d\n", action);
913	}
914		736
915	if (update_now) {
916	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
917	update_position(op->map, op->x, op->y);
918	}
919
920	if(op->more!=NULL)	737	if (op->more)
921	update_object(op->more, action);	738	update_object (op->more, action);
922	}	739	}
923		740
		741	object::object ()
		742	{
		743	SET_FLAG (this, FLAG_REMOVED);
924		744
925	/*	745	expmul = 1.0;
926	* free_object() frees everything allocated by an object, removes	746	face = blank_face;
927	* it from the list of used objects, and puts it on the list of
928	* free objects. The IS_FREED() flag is set in the object.
929	* The object must have been removed by remove_ob() first for
930	* this function to succeed.
931	*
932	* If free_inventory is set, free inventory as well. Else drop items in
933	* inventory to the ground.
934	*/
935
936	void free_object(object *ob) {
937	free_object2(ob, 0);
938	}	747	}
939	void free_object2(object *ob, int free_inventory) {
940	object *tmp,*op;
941		748
942	ob->clear ();	749	object::~object ()
		750	{
		751	unlink ();
943		752
944	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	753	free_key_values (this);
945	LOG(llevDebug,"Free object called with non removed object\n");	754	}
946	dump_object(ob);	755
947	#ifdef MANY_CORES	756	static int object_count;
948	abort();	757
949	#endif	758	void object::link ()
950	}	759	{
951	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	760	assert (!index);//D
952	LOG(llevMonster,"Warning: tried to free friendly object.\n");	761	uuid = gen_uuid ();
953	remove_friendly_object(ob);	762	count = ++object_count;
954	}	763
955	if(QUERY_FLAG(ob,FLAG_FREED)) {	764	refcnt_inc ();
956	dump_object(ob);	765	objects.insert (this);
957	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	766	}
		767
		768	void object::unlink ()
		769	{
		770	if (!index)
958	return;	771	return;
		772
		773	objects.erase (this);
		774	refcnt_dec ();
		775	}
		776
		777	void
		778	object::activate ()
		779	{
		780	/* If already on active list, don't do anything */
		781	if (active)
		782	return;
		783
		784	if (has_active_speed ())
		785	actives.insert (this);
		786	}
		787
		788	void
		789	object::activate_recursive ()
		790	{
		791	activate ();
		792
		793	for (object *op = inv; op; op = op->below)
		794	op->activate_recursive ();
		795	}
		796
		797	/* This function removes object 'op' from the list of active
		798	* objects.
		799	* This should only be used for style maps or other such
		800	* reference maps where you don't want an object that isn't
		801	* in play chewing up cpu time getting processed.
		802	* The reverse of this is to call update_ob_speed, which
		803	* will do the right thing based on the speed of the object.
		804	*/
		805	void
		806	object::deactivate ()
		807	{
		808	/* If not on the active list, nothing needs to be done */
		809	if (!active)
		810	return;
		811
		812	actives.erase (this);
		813	}
		814
		815	void
		816	object::deactivate_recursive ()
		817	{
		818	for (object *op = inv; op; op = op->below)
		819	op->deactivate_recursive ();
		820
		821	deactivate ();
		822	}
		823
		824	void
		825	object::set_flag_inv (int flag, int value)
		826	{
		827	for (object *op = inv; op; op = op->below)
959	}	828	{
960	if(ob->more!=NULL) {	829	op->flag [flag] = value;
961	free_object2(ob->more, free_inventory);	830	op->set_flag_inv (flag, value);
962	ob->more=NULL;
963	}	831	}
964	if (ob->inv) {	832	}
		833
		834	/*
		835	* Remove and free all objects in the inventory of the given object.
		836	* object.c ?
		837	*/
		838	void
		839	object::destroy_inv (bool drop_to_ground)
		840	{
		841	// need to check first, because the checks below might segfault
		842	// as we might be on an invalid mapspace and crossfire code
		843	// is too buggy to ensure that the inventory is empty.
		844	// corollary: if you create arrows etc. with stuff in tis inventory,
		845	// cf will crash below with off-map x and y
		846	if (!inv)
		847	return;
		848
965	/* Only if the space blocks everything do we not process -	849	/* Only if the space blocks everything do we not process -
966	* if some form of movemnt is allowed, let objects	850	* if some form of movement is allowed, let objects
967	* drop on that space.	851	* drop on that space.
968	*/	852	*/
969	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	853	if (!drop_to_ground
970	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	854	|| !map
		855	|| map->in_memory != MAP_IN_MEMORY
		856	|| map->nodrop
		857	|| ms ().move_block == MOVE_ALL)
		858	{
		859	while (inv)
971	{	860	{
972	op=ob->inv;	861	inv->destroy_inv (drop_to_ground);
973	while(op!=NULL) {	862	inv->destroy ();
974	tmp=op->below;
975	remove_ob(op);
976	free_object2(op, free_inventory);
977	op=tmp;
978	}
979	}	863	}
		864	}
		865	else
980	else { /* Put objects in inventory onto this space */	866	{ /* Put objects in inventory onto this space */
981	op=ob->inv;	867	while (inv)
982	while(op!=NULL) {	868	{
983	tmp=op->below;	869	object *op = inv;
984	remove_ob(op);	870
985	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||	871	if (op->flag [FLAG_STARTEQUIP]
986	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))	872	|| op->flag [FLAG_NO_DROP]
987	free_object(op);	873	|| op->type == RUNE
		874	|| op->type == TRAP
		875	|| op->flag [FLAG_IS_A_TEMPLATE]
		876	|| op->flag [FLAG_DESTROY_ON_DEATH])
		877	op->destroy ();
988	else {	878	else
989	op->x=ob->x;	879	map->insert (op, x, y);
990	op->y=ob->y;
991	insert_ob_in_map(op,ob->map,NULL,0); /* Insert in same map as the envir */
992	}
993	op=tmp;
994	}
995	}	880	}
996	}	881	}
997	/* Remove object from the active list */
998	ob->speed = 0;
999	update_ob_speed(ob);
1000
1001	SET_FLAG(ob, FLAG_FREED);
1002	ob->count = 0;
1003
1004	/* Remove this object from the list of used objects */
1005	if(ob->prev==NULL) {
1006	objects=ob->next;
1007	if(objects!=NULL)
1008	objects->prev=NULL;
1009	}
1010	else {
1011	ob->prev->next=ob->next;
1012	if(ob->next!=NULL)
1013	ob->next->prev=ob->prev;
1014	}
1015
1016	ob->name = 0;
1017	ob->name_pl = 0;
1018	ob->title = 0;
1019	ob->race = 0;
1020	ob->slaying = 0;
1021	ob->skill = 0;
1022	ob->lore = 0;
1023	ob->msg = 0;
1024	ob->materialname = 0;
1025
1026	free_key_values (ob);
1027
1028	/* Now link it with the free_objects list: */
1029	ob->prev=NULL;
1030	ob->next=free_objects;
1031
1032	if(free_objects!=NULL)
1033	free_objects->prev=ob;
1034
1035	free_objects=ob;
1036	nroffreeobjects++;
1037	}	882	}
1038		883
1039	/*	884	object *object::create ()
1040	* count_free() returns the number of objects on the list of free objects.
1041	*/
1042
1043	int count_free ()
1044	{	885	{
1045	int i=0;
1046	object *tmp=free_objects;	886	object *op = new object;
1047	while(tmp!=NULL)	887	op->link ();
1048	tmp=tmp->next, i++;
1049	return i;	888	return op;
1050	}	889	}
1051		890
1052	/*	891	void
1053	* count_used() returns the number of objects on the list of used objects.	892	object::do_destroy ()
1054	*/
1055
1056	int count_used()
1057	{	893	{
1058	int i=0;	894	attachable::do_destroy ();
1059	object *tmp=objects;	895
1060	while(tmp!=NULL)	896	if (flag [FLAG_IS_LINKED])
1061	tmp=tmp->next, i++;	897	remove_button_link (this);
		898
		899	if (flag [FLAG_FRIENDLY])
		900	remove_friendly_object (this);
		901
		902	if (!flag [FLAG_REMOVED])
		903	remove ();
		904
		905	destroy_inv (true);
		906
		907	deactivate ();
		908	unlink ();
		909
		910	flag [FLAG_FREED] = 1;
		911
		912	// hack to ensure that freed objects still have a valid map
		913	{
		914	static maptile *freed_map; // freed objects are moved here to avoid crashes
		915
		916	if (!freed_map)
		917	{
		918	freed_map = new maptile;
		919
		920	freed_map->path = "<freed objects map>";
		921	freed_map->name = "/internal/freed_objects_map";
		922	freed_map->width = 3;
		923	freed_map->height = 3;
		924
		925	freed_map->alloc ();
		926	freed_map->in_memory = MAP_IN_MEMORY;
		927	}
		928
		929	map = freed_map;
		930	x = 1;
		931	y = 1;
		932	}
		933
		934	if (more)
		935	{
		936	more->destroy ();
		937	more = 0;
		938	}
		939
		940	head = 0;
		941
		942	// clear those pointers that likely might cause circular references
		943	owner = 0;
		944	enemy = 0;
		945	attacked_by = 0;
		946	current_weapon = 0;
		947	}
		948
		949	void
		950	object::destroy (bool destroy_inventory)
		951	{
		952	if (destroyed ())
1062	return i;	953	return;
1063	}
1064		954
1065	/*	955	if (destroy_inventory)
1066	* count_active() returns the number of objects on the list of active objects.	956	destroy_inv (false);
1067	*/
1068		957
1069	int count_active()	958	if (is_head ())
1070	{	959	if (sound_destroy)
1071	int i=0;	960	play_sound (sound_destroy);
1072	object *tmp=active_objects;	961	else if (flag [FLAG_MONSTER])
1073	while(tmp!=NULL)	962	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
1074	tmp=tmp->active_next, i++;	963
1075	return i;	964	attachable::destroy ();
1076	}	965	}
1077		966
1078	/*	967	/*
1079	* sub_weight() recursively (outwards) subtracts a number from the	968	* sub_weight() recursively (outwards) subtracts a number from the
1080	* weight of an object (and what is carried by it's environment(s)).	969	* weight of an object (and what is carried by it's environment(s)).
1081	*/	970	*/
1082		971	void
1083	void sub_weight (object *op, signed long weight) {	972	sub_weight (object *op, signed long weight)
		973	{
1084	while (op != NULL) {	974	while (op != NULL)
		975	{
1085	if (op->type == CONTAINER) {	976	if (op->type == CONTAINER)
1086	weight=(signed long)(weight*(100-op->stats.Str)/100);	977	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1087	}	978
1088	op->carrying-=weight;	979	op->carrying -= weight;
1089	op = op->env;	980	op = op->env;
1090	}	981	}
1091	}	982	}
1092		983
1093	/* remove_ob(op):	984	/* op->remove ():
1094	* This function removes the object op from the linked list of objects	985	* This function removes the object op from the linked list of objects
1095	* which it is currently tied to. When this function is done, the	986	* which it is currently tied to. When this function is done, the
1096	* object will have no environment. If the object previously had an	987	* object will have no environment. If the object previously had an
1097	* environment, the x and y coordinates will be updated to	988	* environment, the x and y coordinates will be updated to
1098	* the previous environment.	989	* the previous environment.
1099	* Beware: This function is called from the editor as well!
1100	*/	990	*/
1101		991	void
1102	void remove_ob(object *op) {	992	object::do_remove ()
		993	{
1103	object *tmp,*last=NULL;	994	object *tmp, *last = 0;
1104	object *otmp;	995	object *otmp;
1105	tag_t tag;
1106	int check_walk_off;
1107	mapstruct *m;
1108	sint16 x,y;
1109
1110		996
1111	if(QUERY_FLAG(op,FLAG_REMOVED)) {	997	if (QUERY_FLAG (this, FLAG_REMOVED))
1112	dump_object(op);	998	return;
1113	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1114		999
1115	/* Changed it to always dump core in this case. As has been learned
1116	* in the past, trying to recover from errors almost always
1117	* make things worse, and this is a real error here - something
1118	* that should not happen.
1119	* Yes, if this was a mission critical app, trying to do something
1120	* to recover may make sense, but that is because failure of the app
1121	* may have other disastrous problems. Cf runs out of a script
1122	* so is easily enough restarted without any real problems.
1123	* MSW 2001-07-01
1124	*/
1125	abort();
1126	}
1127	if(op->more!=NULL)
1128	remove_ob(op->more);
1129
1130	SET_FLAG(op, FLAG_REMOVED);	1000	SET_FLAG (this, FLAG_REMOVED);
		1001	INVOKE_OBJECT (REMOVE, this);
1131		1002
		1003	if (more)
		1004	more->remove ();
		1005
1132	/*	1006	/*
1133	* In this case, the object to be removed is in someones	1007	* In this case, the object to be removed is in someones
1134	* inventory.	1008	* inventory.
1135	*/	1009	*/
1136	if(op->env!=NULL) {	1010	if (env)
		1011	{
1137	if(op->nrof)	1012	if (nrof)
1138	sub_weight(op->env, op->weight*op->nrof);	1013	sub_weight (env, weight * nrof);
1139	else	1014	else
1140	sub_weight(op->env, op->weight+op->carrying);	1015	sub_weight (env, weight + carrying);
1141		1016
1142	/* NO_FIX_PLAYER is set when a great many changes are being	1017	/* NO_FIX_PLAYER is set when a great many changes are being
1143	* made to players inventory. If set, avoiding the call	1018	* made to players inventory. If set, avoiding the call
1144	* to save cpu time.	1019	* to save cpu time.
1145	*/	1020	*/
1146	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1021	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1147	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1022	otmp->update_stats ();
1148	fix_player(otmp);
1149		1023
1150	if(op->above!=NULL)	1024	if (above)
1151	op->above->below=op->below;	1025	above->below = below;
1152	else	1026	else
1153	op->env->inv=op->below;	1027	env->inv = below;
1154		1028
1155	if(op->below!=NULL)	1029	if (below)
1156	op->below->above=op->above;	1030	below->above = above;
1157		1031
1158	/* we set up values so that it could be inserted into	1032	/* we set up values so that it could be inserted into
1159	* the map, but we don't actually do that - it is up	1033	* the map, but we don't actually do that - it is up
1160	* to the caller to decide what we want to do.	1034	* to the caller to decide what we want to do.
		1035	*/
		1036	x = env->x, y = env->y;
		1037	map = env->map;
		1038	above = 0, below = 0;
		1039	env = 0;
		1040	}
		1041	else if (map)
		1042	{
		1043	if (type == PLAYER)
		1044	{
		1045	// leaving a spot always closes any open container on the ground
		1046	if (container && !container->env)
		1047	// this causes spurious floorbox updates, but it ensures
		1048	// that the CLOSE event is being sent.
		1049	close_container ();
		1050
		1051	--map->players;
		1052	map->touch ();
		1053	}
		1054
		1055	map->dirty = true;
		1056	mapspace &ms = this->ms ();
		1057
		1058	/* link the object above us */
		1059	if (above)
		1060	above->below = below;
		1061	else
		1062	ms.top = below; /* we were top, set new top */
		1063
		1064	/* Relink the object below us, if there is one */
		1065	if (below)
		1066	below->above = above;
		1067	else
		1068	{
		1069	/* Nothing below, which means we need to relink map object for this space
		1070	* use translated coordinates in case some oddness with map tiling is
		1071	* evident
1161	*/	1072	*/
1162	op->x=op->env->x,op->y=op->env->y;	1073	if (GET_MAP_OB (map, x, y) != this)
1163	op->map=op->env->map;	1074	LOG (llevError, "remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom? %s\n", debug_desc ());
1164	op->above=NULL,op->below=NULL;	1075
1165	op->env=NULL;	1076	ms.bot = above; /* goes on above it. */
		1077	}
		1078
		1079	above = 0;
		1080	below = 0;
		1081
		1082	if (map->in_memory == MAP_SAVING)
1166	return;	1083	return;
1167	}
1168		1084
1169	/* If we get here, we are removing it from a map */	1085	int check_walk_off = !flag [FLAG_NO_APPLY];
1170	if (op->map == NULL) return;
1171		1086
1172	x = op->x;	1087	if (object *pl = ms.player ())
1173	y = op->y;
1174	m = get_map_from_coord(op->map, &x, &y);
1175
1176	if (!m) {
1177	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1178	op->map->path, op->x, op->y);
1179	/* in old days, we used to set x and y to 0 and continue.
1180	* it seems if we get into this case, something is probablye
1181	* screwed up and should be fixed.
1182	*/
1183	abort();
1184	}
1185	if (op->map != m) {
1186	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1187	op->map->path, m->path, op->x, op->y, x, y);
1188	}
1189
1190	/* Re did the following section of code - it looks like it had
1191	* lots of logic for things we no longer care about
1192	*/
1193
1194	/* link the object above us */
1195	if (op->above)
1196	op->above->below=op->below;
1197	else
1198	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1199
1200	/* Relink the object below us, if there is one */
1201	if(op->below) {
1202	op->below->above=op->above;
1203	} else {
1204	/* Nothing below, which means we need to relink map object for this space
1205	* use translated coordinates in case some oddness with map tiling is
1206	* evident
1207	*/
1208	if(GET_MAP_OB(m,x,y)!=op) {
1209	dump_object(op);
1210	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);
1211	dump_object(GET_MAP_OB(m,x,y));
1212	LOG(llevError,"%s\n",errmsg);
1213	}	1088	{
1214	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1089	if (pl->container == this)
1215	}
1216	op->above=NULL;
1217	op->below=NULL;
1218
1219	if (op->map->in_memory == MAP_SAVING)
1220	return;
1221
1222	tag = op->count;
1223	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1224	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1225	/* No point updating the players look faces if he is the object
1226	* being removed.
1227	*/
1228
1229	if(tmp->type==PLAYER && tmp!=op) {
1230	/* If a container that the player is currently using somehow gets	1090	/* If a container that the player is currently using somehow gets
1231	* removed (most likely destroyed), update the player view	1091	* removed (most likely destroyed), update the player view
1232	* appropriately.	1092	* appropriately.
1233	*/	1093	*/
1234	if (tmp->container==op) {	1094	pl->close_container ();
1235	CLEAR_FLAG(op, FLAG_APPLIED);	1095
1236	tmp->container=NULL;	1096	pl->contr->ns->floorbox_update ();
		1097	}
		1098
		1099	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1100	{
		1101	/* No point updating the players look faces if he is the object
		1102	* being removed.
		1103	*/
		1104
		1105	/* See if object moving off should effect something */
		1106	if (check_walk_off
		1107	&& ((move_type & tmp->move_off)
		1108	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1109	{
		1110	move_apply (tmp, this, 0);
		1111
		1112	if (destroyed ())
		1113	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1237	}	1114	}
1238	tmp->contr->socket.update_look=1;	1115
		1116	last = tmp;
1239	}	1117	}
1240	/* See if player moving off should effect something */
1241	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1242	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1243		1118
1244	move_apply(tmp, op, NULL);
1245	if (was_destroyed (op, tag)) {
1246	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1247	"leaving object\n", &tmp->name, &tmp->arch->name);
1248	}
1249	}
1250
1251	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1252
1253	if(tmp->above == tmp)
1254	tmp->above = NULL;
1255	last=tmp;
1256	}
1257	/* last == NULL of there are no objects on this space */	1119	/* last == NULL if there are no objects on this space */
1258	if (last==NULL) {	1120	//TODO: this makes little sense, why only update the topmost object?
1259	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1121	if (!last)
1260	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1122	map->at (x, y).flags_ = 0;
1261	* those out anyways, and if there are any flags set right now, they won't
1262	* be correct anyways.
1263	*/
1264	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1265	update_position(op->map, op->x, op->y);
1266	}
1267	else	1123	else
1268	update_object(last, UP_OBJ_REMOVE);	1124	update_object (last, UP_OBJ_REMOVE);
1269		1125
1270	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1126	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1271	update_all_los(op->map, op->x, op->y);	1127	update_all_los (map, x, y);
1272		1128	}
1273	}	1129	}
1274		1130
1275	/*	1131	/*
1276	* merge_ob(op,top):	1132	* merge_ob(op,top):
1277	*	1133	*
1278	* This function goes through all objects below and including top, and	1134	* This function goes through all objects below and including top, and
1279	* merges op to the first matching object.	1135	* merges op to the first matching object.
1280	* If top is NULL, it is calculated.	1136	* If top is NULL, it is calculated.
1281	* Returns pointer to object if it succeded in the merge, otherwise NULL	1137	* Returns pointer to object if it succeded in the merge, otherwise NULL
1282	*/	1138	*/
1283		1139	object *
1284	object *merge_ob(object *op, object *top) {	1140	merge_ob (object *op, object *top)
		1141	{
1285	if(!op->nrof)	1142	if (!op->nrof)
1286	return 0;	1143	return 0;
1287	if(top==NULL)	1144
		1145	if (top)
1288	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1146	for (top = op; top && top->above; top = top->above)
		1147	;
		1148
1289	for(;top!=NULL;top=top->below) {	1149	for (; top; top = top->below)
		1150	{
1290	if(top==op)	1151	if (top == op)
1291	continue;	1152	continue;
1292	if (CAN_MERGE(op,top))	1153
1293	{	1154	if (object::can_merge (op, top))
		1155	{
1294	top->nrof+=op->nrof;	1156	top->nrof += op->nrof;
		1157
1295	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1158	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1296	op->weight = 0; /* Don't want any adjustements now */	1159	op->weight = 0; /* Don't want any adjustements now */
1297	remove_ob(op);	1160	op->destroy ();
1298	free_object(op);
1299	return top;	1161	return top;
1300	}	1162	}
1301	}	1163	}
		1164
1302	return NULL;	1165	return 0;
1303	}	1166	}
1304		1167
		1168	void
		1169	object::expand_tail ()
		1170	{
		1171	if (more)
		1172	return;
		1173
		1174	object *prev = this;
		1175
		1176	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1177	{
		1178	object *op = arch_to_object (at);
		1179
		1180	op->name = name;
		1181	op->name_pl = name_pl;
		1182	op->title = title;
		1183
		1184	op->head = this;
		1185	prev->more = op;
		1186
		1187	prev = op;
		1188	}
		1189	}
		1190
1305	/*	1191	/*
1306	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1192	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1307	* job preparing multi-part monsters	1193	* job preparing multi-part monsters.
1308	*/	1194	*/
		1195	object *
1309	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1196	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1310	object* tmp;	1197	{
1311	if (op->head)	1198	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1312	op=op->head;	1199	{
1313	for (tmp=op;tmp;tmp=tmp->more){
1314	tmp->x=x+tmp->arch->clone.x;	1200	tmp->x = x + tmp->arch->x;
1315	tmp->y=y+tmp->arch->clone.y;	1201	tmp->y = y + tmp->arch->y;
1316	}	1202	}
		1203
1317	return insert_ob_in_map (op, m, originator, flag);	1204	return insert_ob_in_map (op, m, originator, flag);
1318	}	1205	}
1319		1206
1320	/*	1207	/*
1321	* insert_ob_in_map (op, map, originator, flag):	1208	* insert_ob_in_map (op, map, originator, flag):
1322	* This function inserts the object in the two-way linked list	1209	* This function inserts the object in the two-way linked list
…		…
1335	* Return value:	1222	* Return value:
1336	* new object if 'op' was merged with other object	1223	* new object if 'op' was merged with other object
1337	* NULL if 'op' was destroyed	1224	* NULL if 'op' was destroyed
1338	* just 'op' otherwise	1225	* just 'op' otherwise
1339	*/	1226	*/
1340		1227	object *
1341	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1228	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1342	{	1229	{
		1230	assert (!op->flag [FLAG_FREED]);
		1231
1343	object *tmp, *top, *floor=NULL;	1232	object *top, *floor = NULL;
1344	sint16 x,y;
1345		1233
1346	if (QUERY_FLAG (op, FLAG_FREED)) {	1234	op->remove ();
1347	LOG (llevError, "Trying to insert freed object!\n");	1235
1348	return NULL;	1236	/* Ideally, the caller figures this out. However, it complicates a lot
		1237	* of areas of callers (eg, anything that uses find_free_spot would now
		1238	* need extra work
		1239	*/
		1240	if (!xy_normalise (m, op->x, op->y))
1349	}	1241	{
1350	if(m==NULL) {	1242	op->destroy ();
1351	dump_object(op);
1352	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1353	return op;	1243	return 0;
1354	}	1244	}
1355	if(out_of_map(m,op->x,op->y)) {	1245
1356	dump_object(op);	1246	if (object *more = op->more)
1357	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1247	if (!insert_ob_in_map (more, m, originator, flag))
1358	#ifdef MANY_CORES
1359	/* Better to catch this here, as otherwise the next use of this object
1360	* is likely to cause a crash. Better to find out where it is getting
1361	* improperly inserted.
1362	*/
1363	abort();
1364	#endif
1365	return op;	1248	return 0;
1366	}
1367	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1368	dump_object(op);
1369	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1370	return op;
1371	}
1372	if(op->more!=NULL) {
1373	/* The part may be on a different map. */
1374		1249
1375	object *more = op->more;	1250	CLEAR_FLAG (op, FLAG_REMOVED);
1376		1251
1377	/* We really need the caller to normalize coordinates - if	1252	op->map = m;
1378	* we set the map, that doesn't work if the location is within	1253	mapspace &ms = op->ms ();
1379	* a map and this is straddling an edge. So only if coordinate	1254
1380	* is clear wrong do we normalize it.	1255	/* this has to be done after we translate the coordinates.
		1256	*/
		1257	if (op->nrof && !(flag & INS_NO_MERGE))
		1258	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1259	if (object::can_merge (op, tmp))
1381	*/	1260	{
1382	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1261	op->nrof += tmp->nrof;
1383	more->map = get_map_from_coord(m, &more->x, &more->y);	1262	tmp->destroy ();
1384	} else if (!more->map) {
1385	/* For backwards compatibility - when not dealing with tiled maps,
1386	* more->map should always point to the parent.
1387	*/
1388	more->map = m;
1389	}	1263	}
1390		1264
1391	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1265	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1392	if ( ! op->head)	1266	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1393	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1267
1394	return NULL;	1268	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1269	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1270
		1271	if (flag & INS_BELOW_ORIGINATOR)
		1272	{
		1273	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1274	{
		1275	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1276	abort ();
1395	}	1277	}
		1278
		1279	op->above = originator;
		1280	op->below = originator->below;
		1281
		1282	if (op->below)
		1283	op->below->above = op;
		1284	else
		1285	ms.bot = op;
		1286
		1287	/* since *below* originator, no need to update top */
		1288	originator->below = op;
		1289	}
		1290	else
1396	}	1291	{
1397	CLEAR_FLAG(op,FLAG_REMOVED);	1292	top = ms.bot;
1398		1293
1399	/* Ideally, the caller figures this out. However, it complicates a lot	1294	/* If there are other objects, then */
1400	* of areas of callers (eg, anything that uses find_free_spot would now	1295	if ((!(flag & INS_MAP_LOAD)) && top)
1401	* need extra work	1296	{
1402	*/	1297	object *last = 0;
1403	op->map=get_map_from_coord(m, &op->x, &op->y);
1404	x = op->x;
1405	y = op->y;
1406		1298
1407	/* this has to be done after we translate the coordinates.	1299	/*
1408	*/	1300	* If there are multiple objects on this space, we do some trickier handling.
1409	if(op->nrof && !(flag & INS_NO_MERGE)) {	1301	* We've already dealt with merging if appropriate.
1410	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1302	* Generally, we want to put the new object on top. But if
1411	if (CAN_MERGE(op,tmp)) {	1303	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1412	op->nrof+=tmp->nrof;	1304	* floor, we want to insert above that and no further.
1413	remove_ob(tmp);	1305	* Also, if there are spell objects on this space, we stop processing
1414	free_object(tmp);	1306	* once we get to them. This reduces the need to traverse over all of
		1307	* them when adding another one - this saves quite a bit of cpu time
		1308	* when lots of spells are cast in one area. Currently, it is presumed
		1309	* that flying non pickable objects are spell objects.
		1310	*/
		1311	for (top = ms.bot; top; top = top->above)
		1312	{
		1313	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1314	floor = top;
		1315
		1316	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1317	{
		1318	/* We insert above top, so we want this object below this */
		1319	top = top->below;
		1320	break;
		1321	}
		1322
		1323	last = top;
1415	}	1324	}
1416	}
1417		1325
1418	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1326	/* Don't want top to be NULL, so set it to the last valid object */
1419	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1327	top = last;
1420	if (!QUERY_FLAG(op, FLAG_ALIVE))
1421	CLEAR_FLAG(op, FLAG_NO_STEAL);
1422		1328
1423	if (flag & INS_BELOW_ORIGINATOR) {	1329	/* We let update_position deal with figuring out what the space
1424	if (originator->map != op->map || originator->x != op->x ||	1330	* looks like instead of lots of conditions here.
1425	originator->y != op->y) {	1331	* makes things faster, and effectively the same result.
1426	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1332	*/
1427	abort();	1333
		1334	/* Have object 'fall below' other objects that block view.
		1335	* Unless those objects are exits.
		1336	* If INS_ON_TOP is used, don't do this processing
		1337	* Need to find the object that in fact blocks view, otherwise
		1338	* stacking is a bit odd.
		1339	*/
		1340	if (!(flag & INS_ON_TOP)
		1341	&& ms.flags () & P_BLOCKSVIEW
		1342	&& (op->face && !faces [op->face].visibility))
		1343	{
		1344	for (last = top; last != floor; last = last->below)
		1345	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1346	break;
		1347
		1348	/* Check to see if we found the object that blocks view,
		1349	* and make sure we have a below pointer for it so that
		1350	* we can get inserted below this one, which requires we
		1351	* set top to the object below us.
		1352	*/
		1353	if (last && last->below && last != floor)
		1354	top = last->below;
		1355	}
		1356	} /* If objects on this space */
		1357	if (flag & INS_MAP_LOAD)
		1358	top = ms.top;
		1359
		1360	if (flag & INS_ABOVE_FLOOR_ONLY)
		1361	top = floor;
		1362
		1363	/* Top is the object that our object (op) is going to get inserted above.
		1364	*/
		1365
		1366	/* First object on this space */
		1367	if (!top)
		1368	{
		1369	op->above = ms.bot;
		1370
		1371	if (op->above)
		1372	op->above->below = op;
		1373
		1374	op->below = 0;
		1375	ms.bot = op;
1428	}	1376	}
1429	op->above = originator;
1430	op->below = originator->below;
1431	if (op->below) op->below->above = op;
1432	else SET_MAP_OB(op->map, op->x, op->y, op);
1433	/* since *below* originator, no need to update top */
1434	originator->below = op;
1435	} else {	1377	else
1436	/* If there are other objects, then */
1437	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1438	object *last=NULL;
1439	/*
1440	* If there are multiple objects on this space, we do some trickier handling.
1441	* We've already dealt with merging if appropriate.
1442	* Generally, we want to put the new object on top. But if
1443	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1444	* floor, we want to insert above that and no further.
1445	* Also, if there are spell objects on this space, we stop processing
1446	* once we get to them. This reduces the need to traverse over all of
1447	* them when adding another one - this saves quite a bit of cpu time
1448	* when lots of spells are cast in one area. Currently, it is presumed
1449	* that flying non pickable objects are spell objects.
1450	*/
1451
1452	while (top != NULL) {
1453	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1454	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1455	if (QUERY_FLAG(top, FLAG_NO_PICK)
1456	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1457	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1458	{
1459	/* We insert above top, so we want this object below this */
1460	top=top->below;
1461	break;
1462	}
1463	last = top;
1464	top = top->above;
1465	}
1466	/* Don't want top to be NULL, so set it to the last valid object */
1467	top = last;
1468
1469	/* We let update_position deal with figuring out what the space
1470	* looks like instead of lots of conditions here.
1471	* makes things faster, and effectively the same result.
1472	*/
1473
1474	/* Have object 'fall below' other objects that block view.
1475	* Unless those objects are exits, type 66
1476	* If INS_ON_TOP is used, don't do this processing
1477	* Need to find the object that in fact blocks view, otherwise
1478	* stacking is a bit odd.
1479	*/
1480	if (!(flag & INS_ON_TOP) &&
1481	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1482	(op->face && !op->face->visibility)) {
1483	for (last=top; last != floor; last=last->below)
1484	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1485	/* Check to see if we found the object that blocks view,
1486	* and make sure we have a below pointer for it so that
1487	* we can get inserted below this one, which requires we
1488	* set top to the object below us.
1489	*/
1490	if (last && last->below && last != floor) top=last->below;
1491	}
1492	} /* If objects on this space */
1493	if (flag & INS_MAP_LOAD)
1494	top = GET_MAP_TOP(op->map,op->x,op->y);
1495	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1496
1497	/* Top is the object that our object (op) is going to get inserted above.
1498	*/
1499
1500	/* First object on this space */
1501	if (!top) {
1502	op->above = GET_MAP_OB(op->map, op->x, op->y);
1503	if (op->above) op->above->below = op;
1504	op->below = NULL;
1505	SET_MAP_OB(op->map, op->x, op->y, op);
1506	} else { /* get inserted into the stack above top */	1378	{ /* get inserted into the stack above top */
1507	op->above = top->above;	1379	op->above = top->above;
		1380
		1381	if (op->above)
1508	if (op->above) op->above->below = op;	1382	op->above->below = op;
		1383
1509	op->below = top;	1384	op->below = top;
1510	top->above = op;	1385	top->above = op;
1511	}	1386	}
		1387
1512	if (op->above==NULL)	1388	if (!op->above)
1513	SET_MAP_TOP(op->map,op->x, op->y, op);	1389	ms.top = op;
1514	} /* else not INS_BELOW_ORIGINATOR */	1390	} /* else not INS_BELOW_ORIGINATOR */
1515		1391
1516	if(op->type==PLAYER)	1392	if (op->type == PLAYER)
		1393	{
1517	op->contr->do_los=1;	1394	op->contr->do_los = 1;
		1395	++op->map->players;
		1396	op->map->touch ();
		1397	}
1518		1398
1519	/* If we have a floor, we know the player, if any, will be above	1399	op->map->dirty = true;
1520	* it, so save a few ticks and start from there.	1400
1521	*/
1522	if (!(flag & INS_MAP_LOAD))	1401	if (!(flag & INS_MAP_LOAD))
1523	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1402	if (object *pl = ms.player ())
1524	if (tmp->type == PLAYER)	1403	pl->contr->ns->floorbox_update ();
1525	tmp->contr->socket.update_look=1;
1526	}
1527		1404
1528	/* If this object glows, it may affect lighting conditions that are	1405	/* If this object glows, it may affect lighting conditions that are
1529	* visible to others on this map. But update_all_los is really	1406	* visible to others on this map. But update_all_los is really
1530	* an inefficient way to do this, as it means los for all players	1407	* an inefficient way to do this, as it means los for all players
1531	* on the map will get recalculated. The players could very well	1408	* on the map will get recalculated. The players could very well
1532	* be far away from this change and not affected in any way -	1409	* be far away from this change and not affected in any way -
1533	* this should get redone to only look for players within range,	1410	* this should get redone to only look for players within range,
1534	* or just updating the P_NEED_UPDATE for spaces within this area	1411	* or just updating the P_UPTODATE for spaces within this area
1535	* of effect may be sufficient.	1412	* of effect may be sufficient.
1536	*/	1413	*/
1537	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1414	if (op->map->darkness && (op->glow_radius != 0))
1538	update_all_los(op->map, op->x, op->y);	1415	update_all_los (op->map, op->x, op->y);
1539		1416
1540
1541	/* updates flags (blocked, alive, no magic, etc) for this map space */	1417	/* updates flags (blocked, alive, no magic, etc) for this map space */
1542	update_object(op,UP_OBJ_INSERT);	1418	update_object (op, UP_OBJ_INSERT);
1543		1419
		1420	INVOKE_OBJECT (INSERT, op);
1544		1421
1545	/* Don't know if moving this to the end will break anything. However,	1422	/* Don't know if moving this to the end will break anything. However,
1546	* we want to have update_look set above before calling this.	1423	* we want to have floorbox_update called before calling this.
1547	*	1424	*
1548	* check_move_on() must be after this because code called from	1425	* check_move_on() must be after this because code called from
1549	* check_move_on() depends on correct map flags (so functions like	1426	* check_move_on() depends on correct map flags (so functions like
1550	* blocked() and wall() work properly), and these flags are updated by	1427	* blocked() and wall() work properly), and these flags are updated by
1551	* update_object().	1428	* update_object().
1552	*/	1429	*/
1553		1430
1554	/* if this is not the head or flag has been passed, don't check walk on status */	1431	/* if this is not the head or flag has been passed, don't check walk on status */
1555
1556	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1432	if (!(flag & INS_NO_WALK_ON) && op->head_ () == op)
		1433	{
1557	if (check_move_on(op, originator))	1434	if (check_move_on (op, originator))
1558	return NULL;	1435	return 0;
1559		1436
1560	/* If we are a multi part object, lets work our way through the check	1437	/* If we are a multi part object, lets work our way through the check
1561	* walk on's.	1438	* walk on's.
1562	*/	1439	*/
1563	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1440	for (object *tmp = op->more; tmp; tmp = tmp->more)
1564	if (check_move_on (tmp, originator))	1441	if (check_move_on (tmp, originator))
1565	return NULL;	1442	return 0;
1566	}	1443	}
		1444
1567	return op;	1445	return op;
1568	}	1446	}
1569		1447
1570	/* this function inserts an object in the map, but if it	1448	/* this function inserts an object in the map, but if it
1571	* finds an object of its own type, it'll remove that one first.	1449	* finds an object of its own type, it'll remove that one first.
1572	* op is the object to insert it under: supplies x and the map.	1450	* op is the object to insert it under: supplies x and the map.
1573	*/	1451	*/
		1452	void
1574	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1453	replace_insert_ob_in_map (const char *arch_string, object *op)
1575	object *tmp;	1454	{
1576	object *tmp1;	1455	object *tmp, *tmp1;
1577		1456
1578	/* first search for itself and remove any old instances */	1457	/* first search for itself and remove any old instances */
1579		1458
1580	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1459	for (tmp = op->ms ().bot; tmp; tmp = tmp->above)
1581	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1460	if (!strcmp (tmp->arch->archname, arch_string)) /* same archetype */
1582	remove_ob(tmp);	1461	tmp->destroy ();
1583	free_object(tmp);
1584	}
1585	}
1586		1462
1587	tmp1=arch_to_object(find_archetype(arch_string));	1463	tmp1 = arch_to_object (archetype::find (arch_string));
1588		1464
1589		1465	tmp1->x = op->x;
1590	tmp1->x = op->x; tmp1->y = op->y;	1466	tmp1->y = op->y;
1591	insert_ob_in_map(tmp1,op->map,op,0);	1467	insert_ob_in_map (tmp1, op->map, op, 0);
1592	}	1468	}
		1469
		1470	object *
		1471	object::insert_at (object *where, object *originator, int flags)
		1472	{
		1473	return where->map->insert (this, where->x, where->y, originator, flags);
		1474	}
1593		1475
1594	/*	1476	/*
1595	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1477	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1596	* is returned contains nr objects, and the remaining parts contains	1478	* is returned contains nr objects, and the remaining parts contains
1597	* the rest (or is removed and freed if that number is 0).	1479	* the rest (or is removed and freed if that number is 0).
1598	* On failure, NULL is returned, and the reason put into the	1480	* On failure, NULL is returned, and the reason put into the
1599	* global static errmsg array.	1481	* global static errmsg array.
1600	*/	1482	*/
1601		1483	object *
1602	object *get_split_ob(object *orig_ob, uint32 nr) {	1484	get_split_ob (object *orig_ob, uint32 nr)
		1485	{
1603	object *newob;	1486	object *newob;
1604	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1487	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1605		1488
1606	if(orig_ob->nrof<nr) {	1489	if (orig_ob->nrof < nr)
1607	sprintf(errmsg,"There are only %d %ss.",	1490	{
1608	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1491	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1609	return NULL;	1492	return NULL;
1610	}	1493	}
		1494
1611	newob = object_create_clone(orig_ob);	1495	newob = object_create_clone (orig_ob);
		1496
1612	if((orig_ob->nrof-=nr)<1) {	1497	if ((orig_ob->nrof -= nr) < 1)
1613	if ( ! is_removed)	1498	orig_ob->destroy (1);
1614	remove_ob(orig_ob);
1615	free_object2(orig_ob, 1);
1616	}
1617	else if ( ! is_removed) {	1499	else if (!is_removed)
		1500	{
1618	if(orig_ob->env!=NULL)	1501	if (orig_ob->env != NULL)
1619	sub_weight (orig_ob->env,orig_ob->weight*nr);	1502	sub_weight (orig_ob->env, orig_ob->weight * nr);
1620	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1503	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1504	{
1621	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1505	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1622	LOG(llevDebug,
1623	"Error, Tried to split object whose map is not in memory.\n");	1506	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1624	return NULL;	1507	return NULL;
1625	}	1508	}
1626	}	1509	}
		1510
1627	newob->nrof=nr;	1511	newob->nrof = nr;
1628		1512
1629	return newob;	1513	return newob;
1630	}	1514	}
1631		1515
1632	/*	1516	/*
1633	* decrease_ob_nr(object, number) decreases a specified number from	1517	* decrease_ob_nr(object, number) decreases a specified number from
1634	* the amount of an object. If the amount reaches 0, the object	1518	* the amount of an object. If the amount reaches 0, the object
1635	* is subsequently removed and freed.	1519	* is subsequently removed and freed.
1636	*	1520	*
1637	* Return value: 'op' if something is left, NULL if the amount reached 0	1521	* Return value: 'op' if something is left, NULL if the amount reached 0
1638	*/	1522	*/
1639		1523	object *
1640	object *decrease_ob_nr (object *op, uint32 i)	1524	decrease_ob_nr (object *op, uint32 i)
1641	{	1525	{
1642	object *tmp;	1526	object *tmp;
1643	player *pl;
1644		1527
1645	if (i == 0) /* objects with op->nrof require this check */	1528	if (i == 0) /* objects with op->nrof require this check */
1646	return op;	1529	return op;
1647		1530
1648	if (i > op->nrof)	1531	if (i > op->nrof)
1649	i = op->nrof;	1532	i = op->nrof;
1650		1533
1651	if (QUERY_FLAG (op, FLAG_REMOVED))	1534	if (QUERY_FLAG (op, FLAG_REMOVED))
		1535	op->nrof -= i;
		1536	else if (op->env)
		1537	{
		1538	/* is this object in the players inventory, or sub container
		1539	* therein?
		1540	*/
		1541	tmp = op->in_player ();
		1542	/* nope. Is this a container the player has opened?
		1543	* If so, set tmp to that player.
		1544	* IMO, searching through all the players will mostly
		1545	* likely be quicker than following op->env to the map,
		1546	* and then searching the map for a player.
		1547	*/
		1548	if (!tmp)
		1549	for_all_players (pl)
		1550	if (pl->ob->container == op->env)
		1551	{
		1552	tmp = pl->ob;
		1553	break;
		1554	}
		1555
		1556	if (i < op->nrof)
		1557	{
		1558	sub_weight (op->env, op->weight * i);
		1559	op->nrof -= i;
		1560	if (tmp)
		1561	esrv_send_item (tmp, op);
		1562	}
		1563	else
		1564	{
		1565	op->remove ();
		1566	op->nrof = 0;
		1567	if (tmp)
		1568	esrv_del_item (tmp->contr, op->count);
		1569	}
1652	{	1570	}
		1571	else
		1572	{
		1573	object *above = op->above;
		1574
		1575	if (i < op->nrof)
1653	op->nrof -= i;	1576	op->nrof -= i;
1654	}	1577	else
1655	else if (op->env != NULL)
1656	{
1657	/* is this object in the players inventory, or sub container
1658	* therein?
1659	*/	1578	{
1660	tmp = is_player_inv (op->env);	1579	op->remove ();
1661	/* nope. Is this a container the player has opened?	1580	op->nrof = 0;
1662	* If so, set tmp to that player.
1663	* IMO, searching through all the players will mostly
1664	* likely be quicker than following op->env to the map,
1665	* and then searching the map for a player.
1666	*/
1667	if (!tmp) {
1668	for (pl=first_player; pl; pl=pl->next)
1669	if (pl->ob->container == op->env) break;
1670	if (pl) tmp=pl->ob;
1671	else tmp=NULL;
1672	}	1581	}
1673		1582
1674	if (i < op->nrof) {
1675	sub_weight (op->env, op->weight * i);
1676	op->nrof -= i;
1677	if (tmp) {
1678	esrv_send_item(tmp, op);
1679	}
1680	} else {
1681	remove_ob (op);
1682	op->nrof = 0;
1683	if (tmp) {
1684	esrv_del_item(tmp->contr, op->count);
1685	}
1686	}
1687	}
1688	else
1689	{
1690	object *above = op->above;
1691
1692	if (i < op->nrof) {
1693	op->nrof -= i;
1694	} else {
1695	remove_ob (op);
1696	op->nrof = 0;
1697	}
1698	/* Since we just removed op, op->above is null */	1583	/* Since we just removed op, op->above is null */
1699	for (tmp = above; tmp != NULL; tmp = tmp->above)	1584	for (tmp = above; tmp; tmp = tmp->above)
1700	if (tmp->type == PLAYER) {	1585	if (tmp->type == PLAYER)
		1586	{
1701	if (op->nrof)	1587	if (op->nrof)
1702	esrv_send_item(tmp, op);	1588	esrv_send_item (tmp, op);
1703	else	1589	else
1704	esrv_del_item(tmp->contr, op->count);	1590	esrv_del_item (tmp->contr, op->count);
1705	}	1591	}
1706	}	1592	}
1707		1593
1708	if (op->nrof) {	1594	if (op->nrof)
1709	return op;	1595	return op;
1710	} else {	1596	else
1711	free_object (op);	1597	{
		1598	op->destroy ();
1712	return NULL;	1599	return 0;
1713	}	1600	}
1714	}	1601	}
1715		1602
1716	/*	1603	/*
1717	* add_weight(object, weight) adds the specified weight to an object,	1604	* add_weight(object, weight) adds the specified weight to an object,
1718	* and also updates how much the environment(s) is/are carrying.	1605	* and also updates how much the environment(s) is/are carrying.
1719	*/	1606	*/
1720		1607	void
1721	void add_weight (object *op, signed long weight) {	1608	add_weight (object *op, signed long weight)
		1609	{
1722	while (op!=NULL) {	1610	while (op != NULL)
		1611	{
1723	if (op->type == CONTAINER) {	1612	if (op->type == CONTAINER)
1724	weight=(signed long)(weight*(100-op->stats.Str)/100);	1613	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1725	}	1614
1726	op->carrying+=weight;	1615	op->carrying += weight;
1727	op=op->env;	1616	op = op->env;
1728	}	1617	}
1729	}	1618	}
1730		1619
		1620	object *
		1621	insert_ob_in_ob (object *op, object *where)
		1622	{
		1623	if (!where)
		1624	{
		1625	char *dump = dump_object (op);
		1626	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1627	free (dump);
		1628	return op;
		1629	}
		1630
		1631	if (where->head_ () != where)
		1632	{
		1633	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1634	where = where->head;
		1635	}
		1636
		1637	return where->insert (op);
		1638	}
		1639
1731	/*	1640	/*
1732	* insert_ob_in_ob(op,environment):	1641	* env->insert (op)
1733	* This function inserts the object op in the linked list	1642	* This function inserts the object op in the linked list
1734	* inside the object environment.	1643	* inside the object environment.
1735	*	1644	*
1736	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1737	* the inventory at the last position or next to other objects of the same
1738	* type.
1739	* Frank: Now sorted by type, archetype and magic!
1740	*
1741	* The function returns now pointer to inserted item, and return value can	1645	* The function returns now pointer to inserted item, and return value can
1742	* be != op, if items are merged. -Tero	1646	* be != op, if items are merged. -Tero
1743	*/	1647	*/
1744		1648	object *
1745	object *insert_ob_in_ob(object *op,object *where) {	1649	object::insert (object *op)
1746	object *tmp, *otmp;	1650	{
1747
1748	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1651	if (!QUERY_FLAG (op, FLAG_REMOVED))
1749	dump_object(op);	1652	op->remove ();
1750	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1653
1751	return op;
1752	}
1753	if(where==NULL) {
1754	dump_object(op);
1755	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1756	return op;
1757	}
1758	if (where->head) {
1759	LOG(llevDebug,
1760	"Warning: Tried to insert object wrong part of multipart object.\n");
1761	where = where->head;
1762	}
1763	if (op->more) {	1654	if (op->more)
		1655	{
1764	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1656	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1765	&op->name, op->count);
1766	return op;	1657	return op;
1767	}	1658	}
		1659
1768	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1660	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1769	CLEAR_FLAG(op, FLAG_REMOVED);	1661	CLEAR_FLAG (op, FLAG_REMOVED);
		1662
1770	if(op->nrof) {	1663	if (op->nrof)
1771	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1664	{
1772	if ( CAN_MERGE(tmp,op) ) {	1665	for (object *tmp = inv; tmp; tmp = tmp->below)
		1666	if (object::can_merge (tmp, op))
		1667	{
1773	/* return the original object and remove inserted object	1668	/* return the original object and remove inserted object
1774	(client needs the original object) */	1669	(client needs the original object) */
1775	tmp->nrof += op->nrof;	1670	tmp->nrof += op->nrof;
1776	/* Weight handling gets pretty funky. Since we are adding to	1671	/* Weight handling gets pretty funky. Since we are adding to
1777	* tmp->nrof, we need to increase the weight.	1672	* tmp->nrof, we need to increase the weight.
1778	*/	1673	*/
1779	add_weight (where, op->weight*op->nrof);	1674	add_weight (this, op->weight * op->nrof);
1780	SET_FLAG(op, FLAG_REMOVED);	1675	SET_FLAG (op, FLAG_REMOVED);
1781	free_object(op); /* free the inserted object */	1676	op->destroy (); /* free the inserted object */
1782	op = tmp;	1677	op = tmp;
1783	remove_ob (op); /* and fix old object's links */	1678	op->remove (); /* and fix old object's links */
1784	CLEAR_FLAG(op, FLAG_REMOVED);	1679	CLEAR_FLAG (op, FLAG_REMOVED);
1785	break;	1680	break;
1786	}	1681	}
1787		1682
1788	/* I assume combined objects have no inventory	1683	/* I assume combined objects have no inventory
1789	* We add the weight - this object could have just been removed	1684	* We add the weight - this object could have just been removed
1790	* (if it was possible to merge). calling remove_ob will subtract	1685	* (if it was possible to merge). calling remove_ob will subtract
1791	* the weight, so we need to add it in again, since we actually do	1686	* the weight, so we need to add it in again, since we actually do
1792	* the linking below	1687	* the linking below
1793	*/	1688	*/
1794	add_weight (where, op->weight*op->nrof);	1689	add_weight (this, op->weight * op->nrof);
		1690	}
1795	} else	1691	else
1796	add_weight (where, (op->weight+op->carrying));	1692	add_weight (this, (op->weight + op->carrying));
1797		1693
1798	otmp=is_player_inv(where);	1694	if (object *otmp = this->in_player ())
1799	if (otmp&&otmp->contr!=NULL) {
1800	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1695	if (otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1801	fix_player(otmp);	1696	otmp->update_stats ();
1802	}
1803		1697
1804	op->map=NULL;	1698	op->owner = 0; // its his/hers now. period.
1805	op->env=where;	1699	op->map = 0;
		1700	op->env = this;
1806	op->above=NULL;	1701	op->above = 0;
1807	op->below=NULL;	1702	op->below = 0;
1808	op->x=0,op->y=0;	1703	op->x = op->y = 0;
1809		1704
1810	/* reset the light list and los of the players on the map */	1705	/* reset the light list and los of the players on the map */
1811	if((op->glow_radius!=0)&&where->map)	1706	if (op->glow_radius && map)
1812	{	1707	{
1813	#ifdef DEBUG_LIGHTS	1708	#ifdef DEBUG_LIGHTS
1814	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1709	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1815	op->name);
1816	#endif /* DEBUG_LIGHTS */	1710	#endif /* DEBUG_LIGHTS */
1817	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1711	if (map->darkness)
		1712	update_all_los (map, x, y);
1818	}	1713	}
1819		1714
1820	/* Client has no idea of ordering so lets not bother ordering it here.	1715	/* Client has no idea of ordering so lets not bother ordering it here.
1821	* It sure simplifies this function...	1716	* It sure simplifies this function...
1822	*/	1717	*/
1823	if (where->inv==NULL)	1718	if (!inv)
1824	where->inv=op;	1719	inv = op;
1825	else {	1720	else
		1721	{
1826	op->below = where->inv;	1722	op->below = inv;
1827	op->below->above = op;	1723	op->below->above = op;
1828	where->inv = op;	1724	inv = op;
1829	}	1725	}
		1726
		1727	INVOKE_OBJECT (INSERT, this);
		1728
1830	return op;	1729	return op;
1831	}	1730	}
1832		1731
1833	/*	1732	/*
1834	* Checks if any objects has a move_type that matches objects	1733	* Checks if any objects has a move_type that matches objects
…		…
1848	*	1747	*
1849	* MSW 2001-07-08: Check all objects on space, not just those below	1748	* MSW 2001-07-08: Check all objects on space, not just those below
1850	* object being inserted. insert_ob_in_map may not put new objects	1749	* object being inserted. insert_ob_in_map may not put new objects
1851	* on top.	1750	* on top.
1852	*/	1751	*/
1853		1752	int
1854	int check_move_on (object *op, object *originator)	1753	check_move_on (object *op, object *originator)
1855	{	1754	{
1856	object *tmp;	1755	object *tmp;
1857	tag_t tag;
1858	mapstruct *m=op->map;	1756	maptile *m = op->map;
1859	int x=op->x, y=op->y;	1757	int x = op->x, y = op->y;
		1758
1860	MoveType move_on, move_slow, move_block;	1759	MoveType move_on, move_slow, move_block;
1861		1760
1862	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1761	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1863	return 0;	1762	return 0;
1864		1763
1865	tag = op->count;
1866
1867	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1764	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1868	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1765	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1869	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1766	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1870		1767
1871	/* if nothing on this space will slow op down or be applied,	1768	/* if nothing on this space will slow op down or be applied,
1872	* no need to do checking below. have to make sure move_type	1769	* no need to do checking below. have to make sure move_type
1873	* is set, as lots of objects don't have it set - we treat that	1770	* is set, as lots of objects don't have it set - we treat that
1874	* as walking.	1771	* as walking.
1875	*/	1772	*/
1876	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1773	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1877	return 0;	1774	return 0;
1878		1775
1879	/* This is basically inverse logic of that below - basically,	1776	/* This is basically inverse logic of that below - basically,
1880	* if the object can avoid the move on or slow move, they do so,	1777	* if the object can avoid the move on or slow move, they do so,
1881	* but can't do it if the alternate movement they are using is	1778	* but can't do it if the alternate movement they are using is
1882	* blocked. Logic on this seems confusing, but does seem correct.	1779	* blocked. Logic on this seems confusing, but does seem correct.
1883	*/	1780	*/
1884	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1781	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1885	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1782	return 0;
1886		1783
1887	/* The objects have to be checked from top to bottom.	1784	/* The objects have to be checked from top to bottom.
1888	* Hence, we first go to the top:	1785	* Hence, we first go to the top:
1889	*/	1786	*/
1890		1787
1891	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1788	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1892	tmp->above!=NULL; tmp=tmp->above) {	1789	{
1893	/* Trim the search when we find the first other spell effect	1790	/* Trim the search when we find the first other spell effect
1894	* this helps performance so that if a space has 50 spell objects,	1791	* this helps performance so that if a space has 50 spell objects,
1895	* we don't need to check all of them.	1792	* we don't need to check all of them.
1896	*/	1793	*/
1897	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1794	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1795	break;
		1796	}
		1797
		1798	for (; tmp; tmp = tmp->below)
1898	}	1799	{
1899	for(;tmp!=NULL; tmp=tmp->below) {	1800	if (tmp == op)
1900	if (tmp == op) continue; /* Can't apply yourself */	1801	continue; /* Can't apply yourself */
1901		1802
1902	/* Check to see if one of the movement types should be slowed down.	1803	/* Check to see if one of the movement types should be slowed down.
1903	* Second check makes sure that the movement types not being slowed	1804	* Second check makes sure that the movement types not being slowed
1904	* (~slow_move) is not blocked on this space - just because the	1805	* (~slow_move) is not blocked on this space - just because the
1905	* space doesn't slow down swimming (for example), if you can't actually	1806	* space doesn't slow down swimming (for example), if you can't actually
1906	* swim on that space, can't use it to avoid the penalty.	1807	* swim on that space, can't use it to avoid the penalty.
1907	*/	1808	*/
1908	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1809	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1810	{
1909	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1811	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1910	((op->move_type & tmp->move_slow) &&
1911	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1812	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1813	{
1912		1814
1913	float diff;	1815	float
1914
1915	diff = tmp->move_slow_penalty*FABS(op->speed);	1816	diff = tmp->move_slow_penalty * fabs (op->speed);
		1817
1916	if (op->type == PLAYER) {	1818	if (op->type == PLAYER)
1917	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1819	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1918	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1820	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1919	diff /= 4.0;	1821	diff /= 4.0;
1920	}	1822
1921	}
1922	op->speed_left -= diff;	1823	op->speed_left -= diff;
1923	}	1824	}
1924	}	1825	}
1925		1826
1926	/* Basically same logic as above, except now for actual apply. */	1827	/* Basically same logic as above, except now for actual apply. */
1927	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1828	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1928	((op->move_type & tmp->move_on) &&
1929	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1829	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1930		1830	{
1931	move_apply(tmp, op, originator);	1831	move_apply (tmp, op, originator);
		1832
1932	if (was_destroyed (op, tag))	1833	if (op->destroyed ())
1933	return 1;	1834	return 1;
1934		1835
1935	/* what the person/creature stepped onto has moved the object	1836	/* what the person/creature stepped onto has moved the object
1936	* someplace new. Don't process any further - if we did,	1837	* someplace new. Don't process any further - if we did,
1937	* have a feeling strange problems would result.	1838	* have a feeling strange problems would result.
1938	*/	1839	*/
1939	if (op->map != m || op->x != x || op->y != y) return 0;	1840	if (op->map != m || op->x != x || op->y != y)
		1841	return 0;
1940	}	1842	}
1941	}	1843	}
		1844
1942	return 0;	1845	return 0;
1943	}	1846	}
1944		1847
1945	/*	1848	/*
1946	* present_arch(arch, map, x, y) searches for any objects with	1849	* present_arch(arch, map, x, y) searches for any objects with
1947	* a matching archetype at the given map and coordinates.	1850	* a matching archetype at the given map and coordinates.
1948	* The first matching object is returned, or NULL if none.	1851	* The first matching object is returned, or NULL if none.
1949	*/	1852	*/
1950		1853	object *
1951	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1854	present_arch (const archetype *at, maptile *m, int x, int y)
1952	object *tmp;	1855	{
1953	if(m==NULL || out_of_map(m,x,y)) {	1856	if (!m || out_of_map (m, x, y))
		1857	{
1954	LOG(llevError,"Present_arch called outside map.\n");	1858	LOG (llevError, "Present_arch called outside map.\n");
1955	return NULL;	1859	return NULL;
1956	}	1860	}
1957	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1861
		1862	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1958	if(tmp->arch == at)	1863	if (tmp->arch == at)
1959	return tmp;	1864	return tmp;
		1865
1960	return NULL;	1866	return NULL;
1961	}	1867	}
1962		1868
1963	/*	1869	/*
1964	* present(type, map, x, y) searches for any objects with	1870	* present(type, map, x, y) searches for any objects with
1965	* a matching type variable at the given map and coordinates.	1871	* a matching type variable at the given map and coordinates.
1966	* The first matching object is returned, or NULL if none.	1872	* The first matching object is returned, or NULL if none.
1967	*/	1873	*/
1968		1874	object *
1969	object *present(unsigned char type,mapstruct *m, int x,int y) {	1875	present (unsigned char type, maptile *m, int x, int y)
1970	object *tmp;	1876	{
1971	if(out_of_map(m,x,y)) {	1877	if (out_of_map (m, x, y))
		1878	{
1972	LOG(llevError,"Present called outside map.\n");	1879	LOG (llevError, "Present called outside map.\n");
1973	return NULL;	1880	return NULL;
1974	}	1881	}
1975	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1882
		1883	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1976	if(tmp->type==type)	1884	if (tmp->type == type)
1977	return tmp;	1885	return tmp;
		1886
1978	return NULL;	1887	return NULL;
1979	}	1888	}
1980		1889
1981	/*	1890	/*
1982	* present_in_ob(type, object) searches for any objects with	1891	* present_in_ob(type, object) searches for any objects with
1983	* a matching type variable in the inventory of the given object.	1892	* a matching type variable in the inventory of the given object.
1984	* The first matching object is returned, or NULL if none.	1893	* The first matching object is returned, or NULL if none.
1985	*/	1894	*/
1986		1895	object *
1987	object *present_in_ob(unsigned char type, const object *op) {	1896	present_in_ob (unsigned char type, const object *op)
1988	object *tmp;	1897	{
1989	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1898	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1990	if(tmp->type==type)	1899	if (tmp->type == type)
1991	return tmp;	1900	return tmp;
		1901
1992	return NULL;	1902	return NULL;
1993	}	1903	}
1994		1904
1995	/*	1905	/*
1996	* present_in_ob (type, str, object) searches for any objects with	1906	* present_in_ob (type, str, object) searches for any objects with
…		…
2004	* str is the string to match against. Note that we match against	1914	* str is the string to match against. Note that we match against
2005	* the object name, not the archetype name. this is so that the	1915	* the object name, not the archetype name. this is so that the
2006	* spell code can use one object type (force), but change it's name	1916	* spell code can use one object type (force), but change it's name
2007	* to be unique.	1917	* to be unique.
2008	*/	1918	*/
2009		1919	object *
2010	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1920	present_in_ob_by_name (int type, const char *str, const object *op)
2011	object *tmp;	1921	{
2012
2013	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1922	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2014	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1923	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2015	return tmp;	1924	return tmp;
2016	}	1925
2017	return NULL;	1926	return 0;
2018	}	1927	}
2019		1928
2020	/*	1929	/*
2021	* present_arch_in_ob(archetype, object) searches for any objects with	1930	* present_arch_in_ob(archetype, object) searches for any objects with
2022	* a matching archetype in the inventory of the given object.	1931	* a matching archetype in the inventory of the given object.
2023	* The first matching object is returned, or NULL if none.	1932	* The first matching object is returned, or NULL if none.
2024	*/	1933	*/
2025		1934	object *
2026	object *present_arch_in_ob(const archetype *at, const object *op) {	1935	present_arch_in_ob (const archetype *at, const object *op)
2027	object *tmp;	1936	{
2028	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1937	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2029	if( tmp->arch == at)	1938	if (tmp->arch == at)
2030	return tmp;	1939	return tmp;
		1940
2031	return NULL;	1941	return NULL;
2032	}	1942	}
2033		1943
2034	/*	1944	/*
2035	* activate recursively a flag on an object inventory	1945	* activate recursively a flag on an object inventory
2036	*/	1946	*/
		1947	void
2037	void flag_inv(object*op, int flag){	1948	flag_inv (object *op, int flag)
2038	object *tmp;	1949	{
2039	if(op->inv)	1950	if (op->inv)
2040	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1951	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1952	{
2041	SET_FLAG(tmp, flag);	1953	SET_FLAG (tmp, flag);
2042	flag_inv(tmp,flag);	1954	flag_inv (tmp, flag);
2043	}	1955	}
		1956	}
		1957
2044	}/*	1958	/*
2045	* desactivate recursively a flag on an object inventory	1959	* deactivate recursively a flag on an object inventory
2046	*/	1960	*/
		1961	void
2047	void unflag_inv(object*op, int flag){	1962	unflag_inv (object *op, int flag)
2048	object *tmp;	1963	{
2049	if(op->inv)	1964	if (op->inv)
2050	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1965	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1966	{
2051	CLEAR_FLAG(tmp, flag);	1967	CLEAR_FLAG (tmp, flag);
2052	unflag_inv(tmp,flag);	1968	unflag_inv (tmp, flag);
2053	}	1969	}
2054	}
2055
2056	/*
2057	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2058	* all it's inventory (recursively).
2059	* If checksums are used, a player will get set_cheat called for
2060	* him/her-self and all object carried by a call to this function.
2061	*/
2062
2063	void set_cheat(object *op) {
2064	SET_FLAG(op, FLAG_WAS_WIZ);
2065	flag_inv(op, FLAG_WAS_WIZ);
2066	}	1970	}
2067		1971
2068	/*	1972	/*
2069	* find_free_spot(object, map, x, y, start, stop) will search for	1973	* find_free_spot(object, map, x, y, start, stop) will search for
2070	* a spot at the given map and coordinates which will be able to contain	1974	* a spot at the given map and coordinates which will be able to contain
…		…
2084	* because arch_blocked (now ob_blocked) needs to know the movement type	1988	* because arch_blocked (now ob_blocked) needs to know the movement type
2085	* to know if the space in question will block the object. We can't use	1989	* to know if the space in question will block the object. We can't use
2086	* the archetype because that isn't correct if the monster has been	1990	* the archetype because that isn't correct if the monster has been
2087	* customized, changed states, etc.	1991	* customized, changed states, etc.
2088	*/	1992	*/
2089		1993	int
2090	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1994	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1995	{
2091	int i,index=0, flag;	1996	int index = 0, flag;
2092	static int altern[SIZEOFFREE];	1997	int altern[SIZEOFFREE];
2093		1998
2094	for(i=start;i<stop;i++) {	1999	for (int i = start; i < stop; i++)
		2000	{
2095	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2001	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2096	if(!flag)	2002	if (!flag)
2097	altern[index++]=i;	2003	altern [index++] = i;
2098		2004
2099	/* Basically, if we find a wall on a space, we cut down the search size.	2005	/* Basically, if we find a wall on a space, we cut down the search size.
2100	* In this way, we won't return spaces that are on another side of a wall.	2006	* In this way, we won't return spaces that are on another side of a wall.
2101	* This mostly work, but it cuts down the search size in all directions -	2007	* This mostly work, but it cuts down the search size in all directions -
2102	* if the space being examined only has a wall to the north and empty	2008	* if the space being examined only has a wall to the north and empty
2103	* spaces in all the other directions, this will reduce the search space	2009	* spaces in all the other directions, this will reduce the search space
2104	* to only the spaces immediately surrounding the target area, and	2010	* to only the spaces immediately surrounding the target area, and
2105	* won't look 2 spaces south of the target space.	2011	* won't look 2 spaces south of the target space.
2106	*/	2012	*/
2107	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2013	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2108	stop=maxfree[i];	2014	stop = maxfree[i];
2109	}	2015	}
2110	if(!index) return -1;
2111	return altern[RANDOM()%index];
2112	}
2113		2016
		2017	if (!index)
		2018	return -1;
		2019
		2020	return altern [rndm (index)];
		2021	}
		2022
2114	/*	2023	/*
2115	* find_first_free_spot(archetype, mapstruct, x, y) works like	2024	* find_first_free_spot(archetype, maptile, x, y) works like
2116	* find_free_spot(), but it will search max number of squares.	2025	* find_free_spot(), but it will search max number of squares.
2117	* But it will return the first available spot, not a random choice.	2026	* But it will return the first available spot, not a random choice.
2118	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2027	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2119	*/	2028	*/
2120		2029	int
2121	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2030	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2122	int i;	2031	{
2123	for(i=0;i<SIZEOFFREE;i++) {	2032	for (int i = 0; i < SIZEOFFREE; i++)
2124	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2033	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2125	return i;	2034	return i;
2126	}	2035
2127	return -1;	2036	return -1;
2128	}	2037	}
2129		2038
2130	/*	2039	/*
2131	* The function permute(arr, begin, end) randomly reorders the array	2040	* The function permute(arr, begin, end) randomly reorders the array
2132	* arr[begin..end-1].	2041	* arr[begin..end-1].
		2042	* now uses a fisher-yates shuffle, old permute was broken
2133	*/	2043	*/
		2044	static void
2134	static void permute(int *arr, int begin, int end)	2045	permute (int *arr, int begin, int end)
2135	{	2046	{
2136	int i, j, tmp, len;	2047	arr += begin;
		2048	end -= begin;
2137		2049
2138	len = end-begin;	2050	while (--end)
2139	for(i = begin; i < end; i++)	2051	swap (arr [end], arr [rndm (end + 1)]);
2140	{
2141	j = begin+RANDOM()%len;
2142
2143	tmp = arr[i];
2144	arr[i] = arr[j];
2145	arr[j] = tmp;
2146	}
2147	}	2052	}
2148		2053
2149	/* new function to make monster searching more efficient, and effective!	2054	/* new function to make monster searching more efficient, and effective!
2150	* This basically returns a randomized array (in the passed pointer) of	2055	* This basically returns a randomized array (in the passed pointer) of
2151	* the spaces to find monsters. In this way, it won't always look for	2056	* the spaces to find monsters. In this way, it won't always look for
2152	* monsters to the north first. However, the size of the array passed	2057	* monsters to the north first. However, the size of the array passed
2153	* covers all the spaces, so within that size, all the spaces within	2058	* covers all the spaces, so within that size, all the spaces within
2154	* the 3x3 area will be searched, just not in a predictable order.	2059	* the 3x3 area will be searched, just not in a predictable order.
2155	*/	2060	*/
		2061	void
2156	void get_search_arr(int *search_arr)	2062	get_search_arr (int *search_arr)
2157	{	2063	{
2158	int i;	2064	int i;
2159		2065
2160	for(i = 0; i < SIZEOFFREE; i++)	2066	for (i = 0; i < SIZEOFFREE; i++)
2161	{
2162	search_arr[i] = i;	2067	search_arr[i] = i;
2163	}
2164		2068
2165	permute(search_arr, 1, SIZEOFFREE1+1);	2069	permute (search_arr, 1, SIZEOFFREE1 + 1);
2166	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2070	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2167	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2071	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2168	}	2072	}
2169		2073
2170	/*	2074	/*
2171	* find_dir(map, x, y, exclude) will search some close squares in the	2075	* find_dir(map, x, y, exclude) will search some close squares in the
2172	* given map at the given coordinates for live objects.	2076	* given map at the given coordinates for live objects.
…		…
2177	* Perhaps incorrectly, but I'm making the assumption that exclude	2081	* Perhaps incorrectly, but I'm making the assumption that exclude
2178	* is actually want is going to try and move there. We need this info	2082	* is actually want is going to try and move there. We need this info
2179	* because we have to know what movement the thing looking to move	2083	* because we have to know what movement the thing looking to move
2180	* there is capable of.	2084	* there is capable of.
2181	*/	2085	*/
2182		2086	int
2183	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2087	find_dir (maptile *m, int x, int y, object *exclude)
		2088	{
2184	int i,max=SIZEOFFREE, mflags;	2089	int i, max = SIZEOFFREE, mflags;
		2090
2185	sint16 nx, ny;	2091	sint16 nx, ny;
2186	object *tmp;	2092	object *tmp;
2187	mapstruct *mp;	2093	maptile *mp;
		2094
2188	MoveType blocked, move_type;	2095	MoveType blocked, move_type;
2189		2096
2190	if (exclude && exclude->head) {	2097	if (exclude && exclude->head_ () != exclude)
		2098	{
2191	exclude = exclude->head;	2099	exclude = exclude->head;
2192	move_type = exclude->move_type;	2100	move_type = exclude->move_type;
2193	} else {	2101	}
		2102	else
		2103	{
2194	/* If we don't have anything, presume it can use all movement types. */	2104	/* If we don't have anything, presume it can use all movement types. */
2195	move_type=MOVE_ALL;	2105	move_type = MOVE_ALL;
		2106	}
		2107
		2108	for (i = 1; i < max; i++)
2196	}	2109	{
2197
2198	for(i=1;i<max;i++) {
2199	mp = m;	2110	mp = m;
2200	nx = x + freearr_x[i];	2111	nx = x + freearr_x[i];
2201	ny = y + freearr_y[i];	2112	ny = y + freearr_y[i];
2202		2113
2203	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2114	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2115
2204	if (mflags & P_OUT_OF_MAP) {	2116	if (mflags & P_OUT_OF_MAP)
		2117	max = maxfree[i];
		2118	else
		2119	{
		2120	mapspace &ms = mp->at (nx, ny);
		2121
		2122	blocked = ms.move_block;
		2123
		2124	if ((move_type & blocked) == move_type)
2205	max = maxfree[i];	2125	max = maxfree[i];
2206	} else {
2207	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2208
2209	if ((move_type & blocked) == move_type) {
2210	max=maxfree[i];
2211	} else if (mflags & P_IS_ALIVE) {	2126	else if (mflags & P_IS_ALIVE)
2212	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2127	{
		2128	for (tmp = ms.bot; tmp; tmp = tmp->above)
2213	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2129	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2214	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2130	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2215	break;	2131	break;
2216	}	2132
2217	}
2218	if(tmp) {	2133	if (tmp)
2219	return freedir[i];	2134	return freedir[i];
2220	}
2221	}	2135	}
2222	}	2136	}
2223	}	2137	}
		2138
2224	return 0;	2139	return 0;
2225	}	2140	}
2226		2141
2227	/*	2142	/*
2228	* distance(object 1, object 2) will return the square of the	2143	* distance(object 1, object 2) will return the square of the
2229	* distance between the two given objects.	2144	* distance between the two given objects.
2230	*/	2145	*/
2231		2146	int
2232	int distance(const object *ob1, const object *ob2) {	2147	distance (const object *ob1, const object *ob2)
2233	int i;	2148	{
2234	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2149	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2235	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2236	return i;
2237	}	2150	}
2238		2151
2239	/*	2152	/*
2240	* find_dir_2(delta-x,delta-y) will return a direction in which	2153	* find_dir_2(delta-x,delta-y) will return a direction in which
2241	* an object which has subtracted the x and y coordinates of another	2154	* an object which has subtracted the x and y coordinates of another
2242	* object, needs to travel toward it.	2155	* object, needs to travel toward it.
2243	*/	2156	*/
2244		2157	int
2245	int find_dir_2(int x, int y) {	2158	find_dir_2 (int x, int y)
		2159	{
2246	int q;	2160	int q;
2247		2161
2248	if(y)	2162	if (y)
2249	q=x*100/y;	2163	q = x * 100 / y;
2250	else if (x)	2164	else if (x)
2251	q= -300*x;	2165	q = -300 * x;
2252	else	2166	else
2253	return 0;	2167	return 0;
2254		2168
2255	if(y>0) {	2169	if (y > 0)
		2170	{
2256	if(q < -242)	2171	if (q < -242)
2257	return 3 ;	2172	return 3;
2258	if (q < -41)	2173	if (q < -41)
2259	return 2 ;	2174	return 2;
2260	if (q < 41)	2175	if (q < 41)
2261	return 1 ;	2176	return 1;
2262	if (q < 242)	2177	if (q < 242)
2263	return 8 ;	2178	return 8;
2264	return 7 ;	2179	return 7;
2265	}	2180	}
2266		2181
2267	if (q < -242)	2182	if (q < -242)
2268	return 7 ;	2183	return 7;
2269	if (q < -41)	2184	if (q < -41)
2270	return 6 ;	2185	return 6;
2271	if (q < 41)	2186	if (q < 41)
2272	return 5 ;	2187	return 5;
2273	if (q < 242)	2188	if (q < 242)
2274	return 4 ;	2189	return 4;
2275		2190
2276	return 3 ;	2191	return 3;
2277	}
2278
2279	/*
2280	* absdir(int): Returns a number between 1 and 8, which represent
2281	* the "absolute" direction of a number (it actually takes care of
2282	* "overflow" in previous calculations of a direction).
2283	*/
2284
2285	int absdir(int d) {
2286	while(d<1) d+=8;
2287	while(d>8) d-=8;
2288	return d;
2289	}	2192	}
2290		2193
2291	/*	2194	/*
2292	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2195	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2293	* between two directions (which are expected to be absolute (see absdir())	2196	* between two directions (which are expected to be absolute (see absdir())
2294	*/	2197	*/
2295		2198	int
2296	int dirdiff(int dir1, int dir2) {	2199	dirdiff (int dir1, int dir2)
		2200	{
2297	int d;	2201	int d;
		2202
2298	d = abs(dir1 - dir2);	2203	d = abs (dir1 - dir2);
2299	if(d>4)	2204	if (d > 4)
2300	d = 8 - d;	2205	d = 8 - d;
		2206
2301	return d;	2207	return d;
2302	}	2208	}
2303		2209
2304	/* peterm:	2210	/* peterm:
2305	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2211	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2308	* This basically means that if direction is 15, then it could either go	2214	* This basically means that if direction is 15, then it could either go
2309	* direction 4, 14, or 16 to get back to where we are.	2215	* direction 4, 14, or 16 to get back to where we are.
2310	* Moved from spell_util.c to object.c with the other related direction	2216	* Moved from spell_util.c to object.c with the other related direction
2311	* functions.	2217	* functions.
2312	*/	2218	*/
2313
2314	int reduction_dir[SIZEOFFREE][3] = {	2219	int reduction_dir[SIZEOFFREE][3] = {
2315	{0,0,0}, /* 0 */	2220	{0, 0, 0}, /* 0 */
2316	{0,0,0}, /* 1 */	2221	{0, 0, 0}, /* 1 */
2317	{0,0,0}, /* 2 */	2222	{0, 0, 0}, /* 2 */
2318	{0,0,0}, /* 3 */	2223	{0, 0, 0}, /* 3 */
2319	{0,0,0}, /* 4 */	2224	{0, 0, 0}, /* 4 */
2320	{0,0,0}, /* 5 */	2225	{0, 0, 0}, /* 5 */
2321	{0,0,0}, /* 6 */	2226	{0, 0, 0}, /* 6 */
2322	{0,0,0}, /* 7 */	2227	{0, 0, 0}, /* 7 */
2323	{0,0,0}, /* 8 */	2228	{0, 0, 0}, /* 8 */
2324	{8,1,2}, /* 9 */	2229	{8, 1, 2}, /* 9 */
2325	{1,2,-1}, /* 10 */	2230	{1, 2, -1}, /* 10 */
2326	{2,10,12}, /* 11 */	2231	{2, 10, 12}, /* 11 */
2327	{2,3,-1}, /* 12 */	2232	{2, 3, -1}, /* 12 */
2328	{2,3,4}, /* 13 */	2233	{2, 3, 4}, /* 13 */
2329	{3,4,-1}, /* 14 */	2234	{3, 4, -1}, /* 14 */
2330	{4,14,16}, /* 15 */	2235	{4, 14, 16}, /* 15 */
2331	{5,4,-1}, /* 16 */	2236	{5, 4, -1}, /* 16 */
2332	{4,5,6}, /* 17 */	2237	{4, 5, 6}, /* 17 */
2333	{6,5,-1}, /* 18 */	2238	{6, 5, -1}, /* 18 */
2334	{6,20,18}, /* 19 */	2239	{6, 20, 18}, /* 19 */
2335	{7,6,-1}, /* 20 */	2240	{7, 6, -1}, /* 20 */
2336	{6,7,8}, /* 21 */	2241	{6, 7, 8}, /* 21 */
2337	{7,8,-1}, /* 22 */	2242	{7, 8, -1}, /* 22 */
2338	{8,22,24}, /* 23 */	2243	{8, 22, 24}, /* 23 */
2339	{8,1,-1}, /* 24 */	2244	{8, 1, -1}, /* 24 */
2340	{24,9,10}, /* 25 */	2245	{24, 9, 10}, /* 25 */
2341	{9,10,-1}, /* 26 */	2246	{9, 10, -1}, /* 26 */
2342	{10,11,-1}, /* 27 */	2247	{10, 11, -1}, /* 27 */
2343	{27,11,29}, /* 28 */	2248	{27, 11, 29}, /* 28 */
2344	{11,12,-1}, /* 29 */	2249	{11, 12, -1}, /* 29 */
2345	{12,13,-1}, /* 30 */	2250	{12, 13, -1}, /* 30 */
2346	{12,13,14}, /* 31 */	2251	{12, 13, 14}, /* 31 */
2347	{13,14,-1}, /* 32 */	2252	{13, 14, -1}, /* 32 */
2348	{14,15,-1}, /* 33 */	2253	{14, 15, -1}, /* 33 */
2349	{33,15,35}, /* 34 */	2254	{33, 15, 35}, /* 34 */
2350	{16,15,-1}, /* 35 */	2255	{16, 15, -1}, /* 35 */
2351	{17,16,-1}, /* 36 */	2256	{17, 16, -1}, /* 36 */
2352	{18,17,16}, /* 37 */	2257	{18, 17, 16}, /* 37 */
2353	{18,17,-1}, /* 38 */	2258	{18, 17, -1}, /* 38 */
2354	{18,19,-1}, /* 39 */	2259	{18, 19, -1}, /* 39 */
2355	{41,19,39}, /* 40 */	2260	{41, 19, 39}, /* 40 */
2356	{19,20,-1}, /* 41 */	2261	{19, 20, -1}, /* 41 */
2357	{20,21,-1}, /* 42 */	2262	{20, 21, -1}, /* 42 */
2358	{20,21,22}, /* 43 */	2263	{20, 21, 22}, /* 43 */
2359	{21,22,-1}, /* 44 */	2264	{21, 22, -1}, /* 44 */
2360	{23,22,-1}, /* 45 */	2265	{23, 22, -1}, /* 45 */
2361	{45,47,23}, /* 46 */	2266	{45, 47, 23}, /* 46 */
2362	{23,24,-1}, /* 47 */	2267	{23, 24, -1}, /* 47 */
2363	{24,9,-1}}; /* 48 */	2268	{24, 9, -1}
		2269	}; /* 48 */
2364		2270
2365	/* Recursive routine to step back and see if we can	2271	/* Recursive routine to step back and see if we can
2366	* find a path to that monster that we found. If not,	2272	* find a path to that monster that we found. If not,
2367	* we don't bother going toward it. Returns 1 if we	2273	* we don't bother going toward it. Returns 1 if we
2368	* can see a direct way to get it	2274	* can see a direct way to get it
2369	* Modified to be map tile aware -.MSW	2275	* Modified to be map tile aware -.MSW
2370	*/	2276	*/
2371		2277	int
2372
2373	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2278	can_see_monsterP (maptile *m, int x, int y, int dir)
		2279	{
2374	sint16 dx, dy;	2280	sint16 dx, dy;
2375	int mflags;	2281	int mflags;
2376		2282
		2283	if (dir < 0)
2377	if(dir<0) return 0; /* exit condition: invalid direction */	2284	return 0; /* exit condition: invalid direction */
2378		2285
2379	dx = x + freearr_x[dir];	2286	dx = x + freearr_x[dir];
2380	dy = y + freearr_y[dir];	2287	dy = y + freearr_y[dir];
2381		2288
2382	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2289	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2383		2290
2384	/* This functional arguably was incorrect before - it was	2291	/* This functional arguably was incorrect before - it was
2385	* checking for P_WALL - that was basically seeing if	2292	* checking for P_WALL - that was basically seeing if
2386	* we could move to the monster - this is being more	2293	* we could move to the monster - this is being more
2387	* literal on if we can see it. To know if we can actually	2294	* literal on if we can see it. To know if we can actually
2388	* move to the monster, we'd need the monster passed in or	2295	* move to the monster, we'd need the monster passed in or
2389	* at least its move type.	2296	* at least its move type.
2390	*/	2297	*/
2391	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2298	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2299	return 0;
2392		2300
2393	/* yes, can see. */	2301	/* yes, can see. */
2394	if(dir < 9) return 1;	2302	if (dir < 9)
		2303	return 1;
		2304
2395	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2305	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2396	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2306	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2397	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2307	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2398	}	2308	}
2399		2309
2400
2401
2402	/*	2310	/*
2403	* can_pick(picker, item): finds out if an object is possible to be	2311	* can_pick(picker, item): finds out if an object is possible to be
2404	* picked up by the picker. Returnes 1 if it can be	2312	* picked up by the picker. Returnes 1 if it can be
2405	* picked up, otherwise 0.	2313	* picked up, otherwise 0.
2406	*	2314	*
2407	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2315	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2408	* core dumps if they do.	2316	* core dumps if they do.
2409	*	2317	*
2410	* Add a check so we can't pick up invisible objects (0.93.8)	2318	* Add a check so we can't pick up invisible objects (0.93.8)
2411	*/	2319	*/
2412		2320	int
2413	int can_pick(const object *who, const object *item) {	2321	can_pick (const object *who, const object *item)
		2322	{
2414	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2323	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2415	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2324	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2416	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2325	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2417	(who->type==PLAYER||item->weight<who->weight/3));
2418	}	2326	}
2419
2420		2327
2421	/*	2328	/*
2422	* create clone from object to another	2329	* create clone from object to another
2423	*/	2330	*/
		2331	object *
2424	object *object_create_clone (object *asrc) {	2332	object_create_clone (object *asrc)
		2333	{
2425	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2334	object *dst = 0, *tmp, *src, *prev, *item;
2426		2335
2427	if(!asrc) return NULL;	2336	if (!asrc)
2428	src = asrc;	2337	return 0;
2429	if(src->head)	2338
2430	src = src->head;	2339	src = asrc->head_ ();
2431		2340
2432	prev = NULL;	2341	prev = 0;
2433	for(part = src; part; part = part->more) {	2342	for (object *part = src; part; part = part->more)
2434	tmp = get_object();	2343	{
2435	copy_object(part,tmp);	2344	tmp = part->clone ();
2436	tmp->x -= src->x;	2345	tmp->x -= src->x;
2437	tmp->y -= src->y;	2346	tmp->y -= src->y;
		2347
2438	if(!part->head) {	2348	if (!part->head)
		2349	{
2439	dst = tmp;	2350	dst = tmp;
2440	tmp->head = NULL;
2441	} else {
2442	tmp->head = dst;	2351	tmp->head = 0;
2443	}	2352	}
		2353	else
		2354	tmp->head = dst;
		2355
2444	tmp->more = NULL;	2356	tmp->more = 0;
		2357
2445	if(prev)	2358	if (prev)
2446	prev->more = tmp;	2359	prev->more = tmp;
		2360
2447	prev = tmp;	2361	prev = tmp;
2448	}	2362	}
2449	/*** copy inventory ***/	2363
2450	for(item = src->inv; item; item = item->below) {	2364	for (item = src->inv; item; item = item->below)
2451	(void) insert_ob_in_ob(object_create_clone(item),dst);	2365	insert_ob_in_ob (object_create_clone (item), dst);
2452	}
2453		2366
2454	return dst;	2367	return dst;
2455	}
2456
2457	/* return true if the object was destroyed, 0 otherwise */
2458	int was_destroyed (const object *op, tag_t old_tag)
2459	{
2460	/* checking for FLAG_FREED isn't necessary, but makes this function more
2461	* robust */
2462	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2463	}
2464
2465	/* GROS - Creates an object using a string representing its content. */
2466	/* Basically, we save the content of the string to a temp file, then call */
2467	/* load_object on it. I admit it is a highly inefficient way to make things, */
2468	/* but it was simple to make and allows reusing the load_object function. */
2469	/* Remember not to use load_object_str in a time-critical situation. */
2470	/* Also remember that multiparts objects are not supported for now. */
2471
2472	object* load_object_str(const char *obstr)
2473	{
2474	object *op;
2475	char filename[MAX_BUF];
2476	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2477
2478	FILE *tempfile=fopen(filename,"w");
2479	if (tempfile == NULL)
2480	{
2481	LOG(llevError,"Error - Unable to access load object temp file\n");
2482	return NULL;
2483	};
2484	fprintf(tempfile,obstr);
2485	fclose(tempfile);
2486
2487	op=get_object();
2488
2489	object_thawer thawer (filename);
2490
2491	if (thawer)
2492	load_object(thawer,op,0);
2493
2494	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2495	CLEAR_FLAG(op,FLAG_REMOVED);
2496
2497	return op;
2498	}	2368	}
2499		2369
2500	/* This returns the first object in who's inventory that	2370	/* This returns the first object in who's inventory that
2501	* has the same type and subtype match.	2371	* has the same type and subtype match.
2502	* returns NULL if no match.	2372	* returns NULL if no match.
2503	*/	2373	*/
		2374	object *
2504	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2375	find_obj_by_type_subtype (const object *who, int type, int subtype)
2505	{	2376	{
2506	object *tmp;
2507
2508	for (tmp=who->inv; tmp; tmp=tmp->below)	2377	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2509	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2378	if (tmp->type == type && tmp->subtype == subtype)
		2379	return tmp;
2510		2380
2511	return NULL;	2381	return 0;
2512	}	2382	}
2513		2383
2514	/* If ob has a field named key, return the link from the list,	2384	/* If ob has a field named key, return the link from the list,
2515	* otherwise return NULL.	2385	* otherwise return NULL.
2516	*	2386	*
2517	* key must be a passed in shared string - otherwise, this won't	2387	* key must be a passed in shared string - otherwise, this won't
2518	* do the desired thing.	2388	* do the desired thing.
2519	*/	2389	*/
		2390	key_value *
2520	key_value * get_ob_key_link(const object * ob, const char * key) {	2391	get_ob_key_link (const object *ob, const char *key)
2521	key_value * link;	2392	{
2522
2523	for (link = ob->key_values; link != NULL; link = link->next) {	2393	for (key_value *link = ob->key_values; link; link = link->next)
2524	if (link->key == key) {	2394	if (link->key == key)
2525	return link;	2395	return link;
2526	}	2396
2527	}	2397	return 0;
2528		2398	}
2529	return NULL;
2530	}
2531		2399
2532	/*	2400	/*
2533	* Returns the value of op has an extra_field for key, or NULL.	2401	* Returns the value of op has an extra_field for key, or NULL.
2534	*	2402	*
2535	* The argument doesn't need to be a shared string.	2403	* The argument doesn't need to be a shared string.
2536	*	2404	*
2537	* The returned string is shared.	2405	* The returned string is shared.
2538	*/	2406	*/
		2407	const char *
2539	const char * get_ob_key_value(const object * op, const char * const key) {	2408	get_ob_key_value (const object *op, const char *const key)
		2409	{
2540	key_value * link;	2410	key_value *link;
2541	const char * canonical_key;	2411	shstr_cmp canonical_key (key);
		2412
		2413	if (!canonical_key)
2542		2414	{
2543	canonical_key = shstr::find (key);
2544
2545	if (canonical_key == NULL) {
2546	/* 1. There being a field named key on any object	2415	/* 1. There being a field named key on any object
2547	* implies there'd be a shared string to find.	2416	* implies there'd be a shared string to find.
2548	* 2. Since there isn't, no object has this field.	2417	* 2. Since there isn't, no object has this field.
2549	* 3. Therefore, *this* object doesn't have this field.	2418	* 3. Therefore, *this* object doesn't have this field.
2550	*/	2419	*/
2551	return NULL;	2420	return 0;
2552	}	2421	}
2553		2422
2554	/* This is copied from get_ob_key_link() above -	2423	/* This is copied from get_ob_key_link() above -
2555	* only 4 lines, and saves the function call overhead.	2424	* only 4 lines, and saves the function call overhead.
2556	*/	2425	*/
2557	for (link = op->key_values; link != NULL; link = link->next) {	2426	for (link = op->key_values; link; link = link->next)
2558	if (link->key == canonical_key) {	2427	if (link->key == canonical_key)
2559	return link->value;	2428	return link->value;
2560	}
2561	}
2562	return NULL;
2563	}
2564		2429
		2430	return 0;
		2431	}
2565		2432
2566	/*	2433	/*
2567	* Updates the canonical_key in op to value.	2434	* Updates the canonical_key in op to value.
2568	*	2435	*
2569	* canonical_key is a shared string (value doesn't have to be).	2436	* canonical_key is a shared string (value doesn't have to be).
…		…
2571	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2438	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2572	* keys.	2439	* keys.
2573	*	2440	*
2574	* Returns TRUE on success.	2441	* Returns TRUE on success.
2575	*/	2442	*/
		2443	int
2576	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2444	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2445	{
2577	key_value * field = NULL, *last=NULL;	2446	key_value *field = NULL, *last = NULL;
2578		2447
2579	for (field=op->key_values; field != NULL; field=field->next) {	2448	for (field = op->key_values; field != NULL; field = field->next)
		2449	{
2580	if (field->key != canonical_key) {	2450	if (field->key != canonical_key)
		2451	{
2581	last = field;	2452	last = field;
2582	continue;	2453	continue;
2583	}	2454	}
2584		2455
2585	if (value)	2456	if (value)
2586	field->value = value;	2457	field->value = value;
2587	else {	2458	else
		2459	{
2588	/* Basically, if the archetype has this key set,	2460	/* Basically, if the archetype has this key set,
2589	* we need to store the null value so when we save	2461	* we need to store the null value so when we save
2590	* it, we save the empty value so that when we load,	2462	* it, we save the empty value so that when we load,
2591	* we get this value back again.	2463	* we get this value back again.
2592	*/	2464	*/
2593	if (get_ob_key_link (&op->arch->clone, canonical_key))	2465	if (get_ob_key_link (op->arch, canonical_key))
2594	field->value = 0;	2466	field->value = 0;
		2467	else
		2468	{
		2469	if (last)
		2470	last->next = field->next;
2595	else	2471	else
2596	{
2597	if (last) last->next = field->next;
2598	else op->key_values = field->next;	2472	op->key_values = field->next;
2599		2473
2600	delete field;	2474	delete field;
2601	}	2475	}
2602	}	2476	}
2603	return TRUE;	2477	return TRUE;
2604	}	2478	}
2605	/* IF we get here, key doesn't exist */	2479	/* IF we get here, key doesn't exist */
2606		2480
2607	/* No field, we'll have to add it. */	2481	/* No field, we'll have to add it. */
2608		2482
2609	if (!add_key) {	2483	if (!add_key)
2610	return FALSE;	2484	return FALSE;
2611	}	2485
2612	/* There isn't any good reason to store a null	2486	/* There isn't any good reason to store a null
2613	* value in the key/value list. If the archetype has	2487	* value in the key/value list. If the archetype has
2614	* this key, then we should also have it, so shouldn't	2488	* this key, then we should also have it, so shouldn't
2615	* be here. If user wants to store empty strings,	2489	* be here. If user wants to store empty strings,
2616	* should pass in ""	2490	* should pass in ""
2617	*/	2491	*/
2618	if (value == NULL) return TRUE;	2492	if (value == NULL)
2619
2620	field = new key_value;
2621
2622	field->key = canonical_key;
2623	field->value = value;
2624	/* Usual prepend-addition. */
2625	field->next = op->key_values;
2626	op->key_values = field;
2627
2628	return TRUE;	2493	return TRUE;
		2494
		2495	field = new key_value;
		2496
		2497	field->key = canonical_key;
		2498	field->value = value;
		2499	/* Usual prepend-addition. */
		2500	field->next = op->key_values;
		2501	op->key_values = field;
		2502
		2503	return TRUE;
2629	}	2504	}
2630		2505
2631	/*	2506	/*
2632	* Updates the key in op to value.	2507	* Updates the key in op to value.
2633	*	2508	*
…		…
2635	* and not add new ones.	2510	* and not add new ones.
2636	* In general, should be little reason FALSE is ever passed in for add_key	2511	* In general, should be little reason FALSE is ever passed in for add_key
2637	*	2512	*
2638	* Returns TRUE on success.	2513	* Returns TRUE on success.
2639	*/	2514	*/
		2515	int
2640	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2516	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2641	{	2517	{
2642	shstr key_ (key);	2518	shstr key_ (key);
		2519
2643	return set_ob_key_value_s (op, key_, value, add_key);	2520	return set_ob_key_value_s (op, key_, value, add_key);
2644	}	2521	}
		2522
		2523	object::depth_iterator::depth_iterator (object *container)
		2524	: iterator_base (container)
		2525	{
		2526	while (item->inv)
		2527	item = item->inv;
		2528	}
		2529
		2530	void
		2531	object::depth_iterator::next ()
		2532	{
		2533	if (item->below)
		2534	{
		2535	item = item->below;
		2536
		2537	while (item->inv)
		2538	item = item->inv;
		2539	}
		2540	else
		2541	item = item->env;
		2542	}
		2543
		2544	const char *
		2545	object::flag_desc (char *desc, int len) const
		2546	{
		2547	char *p = desc;
		2548	bool first = true;
		2549
		2550	*p = 0;
		2551
		2552	for (int i = 0; i < NUM_FLAGS; i++)
		2553	{
		2554	if (len <= 10) // magic constant!
		2555	{
		2556	snprintf (p, len, ",...");
		2557	break;
		2558	}
		2559
		2560	if (flag [i])
		2561	{
		2562	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2563	len -= cnt;
		2564	p += cnt;
		2565	first = false;
		2566	}
		2567	}
		2568
		2569	return desc;
		2570	}
		2571
		2572	// return a suitable string describing an object in enough detail to find it
		2573	const char *
		2574	object::debug_desc (char *info) const
		2575	{
		2576	char flagdesc[512];
		2577	char info2[256 * 4];
		2578	char *p = info;
		2579
		2580	p += snprintf (p, 512, "{cnt:%d,uuid:<1.%" PRIx64 ">,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2581	count, uuid.seq,
		2582	&name,
		2583	title ? "\",title:\"" : "",
		2584	title ? (const char *)title : "",
		2585	flag_desc (flagdesc, 512), type);
		2586
		2587	if (!this->flag[FLAG_REMOVED] && env)
		2588	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2589
		2590	if (map)
		2591	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2592
		2593	return info;
		2594	}
		2595
		2596	const char *
		2597	object::debug_desc () const
		2598	{
		2599	static char info[3][256 * 4];
		2600	static int info_idx;
		2601
		2602	return debug_desc (info [++info_idx % 3]);
		2603	}
		2604
		2605	struct region *
		2606	object::region () const
		2607	{
		2608	return map ? map->region (x, y)
		2609	: region::default_region ();
		2610	}
		2611
		2612	const materialtype_t *
		2613	object::dominant_material () const
		2614	{
		2615	if (materialtype_t *mt = name_to_material (materialname))
		2616	return mt;
		2617
		2618	return name_to_material (shstr_unknown);
		2619	}
		2620
		2621	void
		2622	object::open_container (object *new_container)
		2623	{
		2624	if (container == new_container)
		2625	return;
		2626
		2627	if (object *old_container = container)
		2628	{
		2629	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2630	return;
		2631
		2632	#if 0
		2633	// remove the "Close old_container" object.
		2634	if (object *closer = old_container->inv)
		2635	if (closer->type == CLOSE_CON)
		2636	closer->destroy ();
		2637	#endif
		2638
		2639	old_container->flag [FLAG_APPLIED] = 0;
		2640	container = 0;
		2641
		2642	esrv_update_item (UPD_FLAGS, this, old_container);
		2643	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
		2644	play_sound (sound_find ("chest_close"));
		2645	}
		2646
		2647	if (new_container)
		2648	{
		2649	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2650	return;
		2651
		2652	// TODO: this does not seem to serve any purpose anymore?
		2653	#if 0
		2654	// insert the "Close Container" object.
		2655	if (archetype *closer = new_container->other_arch)
		2656	{
		2657	object *closer = arch_to_object (new_container->other_arch);
		2658	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2659	new_container->insert (closer);
		2660	}
		2661	#endif
		2662
		2663	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2664
		2665	new_container->flag [FLAG_APPLIED] = 1;
		2666	container = new_container;
		2667
		2668	esrv_update_item (UPD_FLAGS, this, new_container);
		2669	esrv_send_inventory (this, new_container);
		2670	play_sound (sound_find ("chest_open"));
		2671	}
		2672	}
		2673
		2674	object *
		2675	object::force_find (const shstr name)
		2676	{
		2677	/* cycle through his inventory to look for the MARK we want to
		2678	* place
		2679	*/
		2680	for (object *tmp = inv; tmp; tmp = tmp->below)
		2681	if (tmp->type == FORCE && tmp->slaying == name)
		2682	return splay (tmp);
		2683
		2684	return 0;
		2685	}
		2686
		2687	void
		2688	object::force_add (const shstr name, int duration)
		2689	{
		2690	if (object *force = force_find (name))
		2691	force->destroy ();
		2692
		2693	object *force = get_archetype (FORCE_NAME);
		2694
		2695	force->slaying = name;
		2696	force->stats.food = 1;
		2697	force->speed_left = -1.f;
		2698
		2699	force->set_speed (duration ? 1.f / duration : 0.f);
		2700	force->flag [FLAG_IS_USED_UP] = true;
		2701	force->flag [FLAG_APPLIED] = true;
		2702
		2703	insert (force);
		2704	}
		2705
		2706	void
		2707	object::play_sound (faceidx sound) const
		2708	{
		2709	if (!sound)
		2710	return;
		2711
		2712	if (flag [FLAG_REMOVED])
		2713	return;
		2714
		2715	if (env)
		2716	{
		2717	if (object *pl = in_player ())
		2718	pl->contr->play_sound (sound);
		2719	}
		2720	else
		2721	map->play_sound (sound, x, y);
		2722	}
		2723

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