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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 1.152 by root, Thu May 17 14:14:54 2007 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.13 2006/09/03 22:45:55 root Exp $";
4	*/
5
6	/*
7	CrossFire, A Multiplayer game for X-windows	2	* CrossFire, A Multiplayer game
8		3	*
		4	* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (C) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (C) 1992 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* This program 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 2 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, write to the Free Software
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25		21	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	* The authors can be reached via e-mail at <crossfire@schmorp.de>
27	*/	23	*/
28		24
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.	25	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying	26	sub/add_weight will transcend the environment updating the carrying
31	variable. */	27	variable. */
32	#include <global.h>	28	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	29	#include <stdio.h>
35	#include <sys/types.h>	30	#include <sys/types.h>
36	#include <sys/uio.h>	31	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	32	#include <object.h>
39	#include <funcpoint.h>	33	#include <funcpoint.h>
40	#include <skills.h>	34	#include <sproto.h>
41	#include <loader.h>	35	#include <loader.h>
42	#ifdef MEMORY_DEBUG	36
43	int nroffreeobjects = 0;	37	#include <bitset>
		38
44	int nrofallocobjects = 0;	39	int nrofallocobjects = 0;
45	#undef OBJ_EXPAND	40	static UUID uuid;
46	#define OBJ_EXPAND 1	41	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		42
53	object *objects; /* Pointer to the list of used objects */	43	objectvec objects;
54	object *free_objects; /* Pointer to the list of unused objects */	44	activevec actives;
55	object *active_objects; /* List of active objects that need to be processed */
56		45
57	short freearr_x[SIZEOFFREE]=	46	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};	47	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]=	48	};
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,	49	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};	50	-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]=	51	};
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,	52	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};	53	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
		54	};
66	int freedir[SIZEOFFREE]= {	55	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,	56	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};	57	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		58	};
69		59
		60	static void
		61	write_uuid (void)
		62	{
		63	char filename1[MAX_BUF], filename2[MAX_BUF];
		64
		65	sprintf (filename1, "%s/uuid", settings.localdir);
		66	sprintf (filename2, "%s/uuid~", settings.localdir);
		67
		68	FILE *fp;
		69
		70	if (!(fp = fopen (filename2, "w")))
		71	{
		72	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
		73	return;
		74	}
		75
		76	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
		77	fclose (fp);
		78	rename (filename2, filename1);
		79	}
		80
		81	static void
		82	read_uuid (void)
		83	{
		84	char filename[MAX_BUF];
		85
		86	sprintf (filename, "%s/uuid", settings.localdir);
		87
		88	FILE *fp;
		89
		90	if (!(fp = fopen (filename, "r")))
		91	{
		92	if (errno == ENOENT)
		93	{
		94	LOG (llevInfo, "RESET uid to 1\n");
		95	uuid.seq = 0;
		96	write_uuid ();
		97	return;
		98	}
		99
		100	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		101	_exit (1);
		102	}
		103
		104	int version;
		105	unsigned long long uid;
		106	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)
		107	{
		108	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);
		109	_exit (1);
		110	}
		111
		112	uuid.seq = uid;
		113	write_uuid ();
		114	LOG (llevDebug, "read UID: %" PRId64 "\n", uid);
		115	fclose (fp);
		116	}
		117
		118	UUID
		119	gen_uuid ()
		120	{
		121	UUID uid;
		122
		123	uid.seq = ++uuid.seq;
		124
		125	if (!(uuid.seq & (UUID_SKIP - 1)))
		126	write_uuid ();
		127
		128	return uid;
		129	}
		130
		131	void
		132	init_uuid ()
		133	{
		134	read_uuid ();
		135	}
70		136
71	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	137	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		138	static int
72	static int compare_ob_value_lists_one(const object * wants, const object * has) {	139	compare_ob_value_lists_one (const object *wants, const object *has)
		140	{
73	key_value * wants_field;	141	key_value *wants_field;
74		142
75	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	143	/* 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	144	* objects with lists are rare, and lists stay short. If not, use a
77	* different structure or at least keep the lists sorted...	145	* different structure or at least keep the lists sorted...
78	*/	146	*/
79		147
80	/* For each field in wants, */	148	/* For each field in wants, */
81	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	149	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		150	{
82	key_value * has_field;	151	key_value *has_field;
83		152
84	/* Look for a field in has with the same key. */	153	/* Look for a field in has with the same key. */
85	has_field = get_ob_key_link(has, wants_field->key);	154	has_field = get_ob_key_link (has, wants_field->key);
		155
		156	if (has_field == NULL)
86		157	{
87	if (has_field == NULL) {
88	/* No field with that name. */	158	/* No field with that name. */
89	return FALSE;	159	return FALSE;
90	}	160	}
91		161
92	/* Found the matching field. */	162	/* Found the matching field. */
93	if (has_field->value != wants_field->value) {	163	if (has_field->value != wants_field->value)
		164	{
94	/* Values don't match, so this half of the comparison is false. */	165	/* Values don't match, so this half of the comparison is false. */
95	return FALSE;	166	return FALSE;
96	}	167	}
97		168
98	/* If we get here, we found a match. Now for the next field in wants. */	169	/* If we get here, we found a match. Now for the next field in wants. */
99	}
100		170	}
		171
101	/* If we get here, every field in wants has a matching field in has. */	172	/* If we get here, every field in wants has a matching field in has. */
102	return TRUE;	173	return TRUE;
103	}	174	}
104		175
105	/* Returns TRUE if ob1 has the same key_values as ob2. */	176	/* Returns TRUE if ob1 has the same key_values as ob2. */
		177	static int
106	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	178	compare_ob_value_lists (const object *ob1, const object *ob2)
		179	{
107	/* However, there may be fields in has which aren't partnered in wants,	180	/* However, there may be fields in has which aren't partnered in wants,
108	* so we need to run the comparison *twice*. :(	181	* so we need to run the comparison *twice*. :(
109	*/	182	*/
110	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	183	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
111	}	184	}
112		185
113	/* Function examines the 2 objects given to it, and returns true if	186	/* Function examines the 2 objects given to it, and returns true if
114	* they can be merged together.	187	* they can be merged together.
115	*	188	*
116	* Note that this function appears a lot longer than the macro it	189	* Note that this function appears a lot longer than the macro it
117	* replaces - this is mostly for clarity - a decent compiler should hopefully	190	* replaces - this is mostly for clarity - a decent compiler should hopefully
118	* reduce this to the same efficiency.	191	* reduce this to the same efficiency.
119	*	192	*
120	* Check nrof variable *before* calling CAN_MERGE()	193	* Check nrof variable *before* calling can_merge()
121	*	194	*
122	* Improvements made with merge: Better checking on potion, and also	195	* Improvements made with merge: Better checking on potion, and also
123	* check weight	196	* check weight
124	*/	197	*/
125		198	bool object::can_merge_slow (object *ob1, object *ob2)
126	int CAN_MERGE(object *ob1, object *ob2) {	199	{
127
128	/* A couple quicksanity checks */	200	/* A couple quicksanity checks */
129	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	201	if (ob1 == ob2
		202	|| ob1->type != ob2->type
		203	|| ob1->speed != ob2->speed
		204	|| ob1->value != ob2->value
		205	|| ob1->name != ob2->name)
		206	return 0;
130		207
131	if (ob1->speed != ob2->speed) return 0;	208	//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	209	/* 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	210	* value could not be stored in a sint32 (which unfortunately sometimes is
134	* check?	211	* used to store nrof).
135	*/	212	*/
136	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	213	if (ob1->nrof + ob2->nrof >= 1UL << 31)
		214	return 0;
		215
		216	/* If the objects have been identified, set the BEEN_APPLIED flag.
		217	* This is to the comparison of the flags below will be OK. We
		218	* just can't ignore the been applied or identified flags, as they
		219	* are not equal - just if it has been identified, the been_applied
		220	* flags lose any meaning.
		221	*/
		222	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		223	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		224
		225	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		226	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		227
		228	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
		229	|| ob1->arch != ob2->arch
		230	|| ob1->name != ob2->name
		231	|| ob1->title != ob2->title
		232	|| ob1->msg != ob2->msg
		233	|| ob1->weight != ob2->weight
		234	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		235	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
		236	|| ob1->attacktype != ob2->attacktype
		237	|| ob1->magic != ob2->magic
		238	|| ob1->slaying != ob2->slaying
		239	|| ob1->skill != ob2->skill
		240	|| ob1->value != ob2->value
		241	|| ob1->animation_id != ob2->animation_id
		242	|| ob1->client_type != ob2->client_type
		243	|| ob1->materialname != ob2->materialname
		244	|| ob1->lore != ob2->lore
		245	|| ob1->subtype != ob2->subtype
		246	|| ob1->move_type != ob2->move_type
		247	|| ob1->move_block != ob2->move_block
		248	|| ob1->move_allow != ob2->move_allow
		249	|| ob1->move_on != ob2->move_on
		250	|| ob1->move_off != ob2->move_off
		251	|| ob1->move_slow != ob2->move_slow
		252	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
		253	return 0;
		254
		255	/* This is really a spellbook check - really, we should
		256	* check all objects in the inventory.
		257	*/
		258	if (ob1->inv || ob2->inv)
		259	{
		260	/* if one object has inventory but the other doesn't, not equiv */
		261	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
137	return 0;	262	return 0;
138		263
139	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	264	/* Now check to see if the two inventory objects could merge */
140	* value could not be stored in a sint32 (which unfortunately sometimes is	265	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;	266	return 0;
145		267
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	268	/* inventory ok - still need to check rest of this object to see
157	* if it is valid.	269	* if it is valid.
158	*/	270	*/
159	}	271	}
160		272
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,	273	/* 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	274	* 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.	275	* some items equipped, and we don't want those to merge.
212	*/	276	*/
213	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))	277	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		278	return 0;
		279
		280	/* Note sure why the following is the case - either the object has to
		281	* be animated or have a very low speed. Is this an attempted monster
		282	* check?
		283	*/
		284	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
		285	return 0;
		286
		287	switch (ob1->type)
		288	{
		289	case SCROLL:
		290	if (ob1->level != ob2->level)
		291	return 0;
		292	break;
		293	}
		294
		295	if (ob1->key_values != NULL || ob2->key_values != NULL)
		296	{
		297	/* At least one of these has key_values. */
		298	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
		299	/* One has fields, but the other one doesn't. */
214	return 0;	300	return 0;
215
216	switch (ob1->type) {
217	case SCROLL:
218	if (ob1->level != ob2->level) return 0;
219	break;
220
221	}
222	if (ob1->key_values != NULL || ob2->key_values != NULL) {
223	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {
225	/* One has fields, but the other one doesn't. */
226	return 0;
227	} else if (!compare_ob_value_lists(ob1, ob2)) {	301	else if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	302	return 0;
229	}	303	}
		304
		305	//TODO: generate an event or call into perl for additional checks
		306	if (ob1->self || ob2->self)
230	}	307	{
		308	ob1->optimise ();
		309	ob2->optimise ();
231		310
		311	if (ob1->self || ob2->self)
		312	return 0;
		313	}
		314
232	/* Everything passes, must be OK. */	315	/* Everything passes, must be OK. */
233	return 1;	316	return 1;
234	}	317	}
235		318
236	/*	319	/*
237	* sum_weight() is a recursive function which calculates the weight	320	* sum_weight() is a recursive function which calculates the weight
238	* an object is carrying. It goes through in figures out how much	321	* an object is carrying. It goes through in figures out how much
239	* containers are carrying, and sums it up.	322	* containers are carrying, and sums it up.
240	*/	323	*/
241	signed long sum_weight(object *op) {	324	long
		325	sum_weight (object *op)
		326	{
242	signed long sum;	327	long sum;
243	object *inv;	328	object *inv;
		329
244	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	330	for (sum = 0, inv = op->inv; inv; inv = inv->below)
		331	{
245	if (inv->inv)	332	if (inv->inv)
246	sum_weight(inv);	333	sum_weight (inv);
		334
247	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	335	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
248	}	336	}
		337
249	if (op->type == CONTAINER && op->stats.Str)	338	if (op->type == CONTAINER && op->stats.Str)
250	sum = (sum * (100 - op->stats.Str))/100;	339	sum = (sum * (100 - op->stats.Str)) / 100;
		340
251	if(op->carrying != sum)	341	if (op->carrying != sum)
252	op->carrying = sum;	342	op->carrying = sum;
		343
253	return sum;	344	return sum;
254	}	345	}
255		346
256	/**	347	/**
257	* Return the outermost environment object for a given object.	348	* Return the outermost environment object for a given object.
258	*/	349	*/
259		350
		351	object *
260	object *object_get_env_recursive (object *op) {	352	object_get_env_recursive (object *op)
		353	{
261	while (op->env != NULL)	354	while (op->env != NULL)
262	op = op->env;	355	op = op->env;
263	return op;	356	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	}	357	}
278		358
279	/*	359	/*
280	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	360	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
281	* Some error messages.	361	* Some error messages.
282	* The result of the dump is stored in the static global errmsg array.	362	* The result of the dump is stored in the static global errmsg array.
283	*/	363	*/
284		364	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) {	365	dump_object (object *op)
332	if(op==NULL) {	366	{
333	strcpy(errmsg,"[NULL pointer]");	367	if (!op)
334	return;	368	return strdup ("[NULLOBJ]");
335	}
336	errmsg[0]='\0';
337	dump_object2(op);
338	}
339		369
340	void dump_all_objects(void) {	370	object_freezer freezer;
341	object *op;	371	op->write (freezer);
342	for(op=objects;op!=NULL;op=op->next) {	372	return freezer.as_string ();
343	dump_object(op);
344	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
345	}
346	}	373	}
347		374
348	/*	375	/*
349	* get_nearest_part(multi-object, object 2) returns the part of the	376	* get_nearest_part(multi-object, object 2) returns the part of the
350	* multi-object 1 which is closest to the second object.	377	* multi-object 1 which is closest to the second object.
351	* If it's not a multi-object, it is returned.	378	* If it's not a multi-object, it is returned.
352	*/	379	*/
353		380
		381	object *
354	object *get_nearest_part(object *op, const object *pl) {	382	get_nearest_part (object *op, const object *pl)
		383	{
355	object *tmp,*closest;	384	object *tmp, *closest;
356	int last_dist,i;	385	int last_dist, i;
		386
357	if(op->more==NULL)	387	if (op->more == NULL)
358	return op;	388	return op;
359	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	389	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
360	if((i=distance(tmp,pl))<last_dist)	390	if ((i = distance (tmp, pl)) < last_dist)
361	closest=tmp,last_dist=i;	391	closest = tmp, last_dist = i;
362	return closest;	392	return closest;
363	}	393	}
364		394
365	/*	395	/*
366	* Returns the object which has the count-variable equal to the argument.	396	* Returns the object which has the count-variable equal to the argument.
367	*/	397	*/
368		398	object *
369	object *find_object(tag_t i) {	399	find_object (tag_t i)
370	object *op;	400	{
371	for(op=objects;op!=NULL;op=op->next)	401	for_all_objects (op)
372	if(op->count==i)	402	if (op->count == i)
373	break;
374	return op;	403	return op;
		404
		405	return 0;
375	}	406	}
376		407
377	/*	408	/*
378	* Returns the first object which has a name equal to the argument.	409	* Returns the first object which has a name equal to the argument.
379	* Used only by the patch command, but not all that useful.	410	* Used only by the patch command, but not all that useful.
380	* Enables features like "patch <name-of-other-player> food 999"	411	* Enables features like "patch <name-of-other-player> food 999"
381	*/	412	*/
382		413	object *
383	object *find_object_name(const char *str) {	414	find_object_name (const char *str)
384	const char *name = shstr::find (str);	415	{
		416	shstr_cmp str_ (str);
385	object *op;	417	object *op;
386	for(op=objects;op!=NULL;op=op->next)	418
		419	for_all_objects (op)
387	if(&op->name == name)	420	if (op->name == str_)
388	break;	421	break;
389		422
390	return op;	423	return op;
391	}	424	}
392		425
		426	void
393	void free_all_object_data(void) {	427	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	{	428	{
435	if (!op) return;	429	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	}	430	}
443
444
445		431
446	/*	432	/*
447	* Sets the owner and sets the skill and exp pointers to owner's current	433	* Sets the owner and sets the skill and exp pointers to owner's current
448	* skill and experience objects.	434	* skill and experience objects.
449	*/	435	*/
450	void set_owner (object *op, object *owner)	436	void
		437	object::set_owner (object *owner)
451	{	438	{
452	if(owner==NULL||op==NULL)	439	if (!owner)
453	return;	440	return;
454		441
455	/* next line added to allow objects which own objects */	442	/* next line added to allow objects which own objects */
456	/* Add a check for ownercounts in here, as I got into an endless loop	443	/* 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	444	* with the fireball owning a poison cloud which then owned the
458	* fireball. I believe that was caused by one of the objects getting	445	* fireball. I believe that was caused by one of the objects getting
459	* freed and then another object replacing it. Since the ownercounts	446	* 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.	447	* didn't match, this check is valid and I believe that cause is valid.
461	*/	448	*/
462	while (owner->owner && owner!=owner->owner &&	449	while (owner->owner)
463	owner->ownercount==owner->owner->count) owner=owner->owner;	450	owner = owner->owner;
464		451
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;	452	this->owner = owner;
471
472	op->ownercount=owner->count;
473	owner->refcount++;
474
475	}	453	}
476		454
477	/* Set the owner to clone's current owner and set the skill and experience	455	int
478	* objects to clone's objects (typically those objects that where the owner's	456	object::slottype () const
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	*
482	* Use this function if player created an object (e.g. fire bullet, swarm
483	* spell), and this object creates further objects whose kills should be
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	{	457	{
489	object *owner = get_owner (clone);	458	if (type == SKILL)
490	if (owner == NULL) {	459	{
491	/* players don't have owners - they own themselves. Update	460	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
492	* as appropriate.	461	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		462	}
		463	else
		464	{
		465	if (slot [body_combat].info) return slot_combat;
		466	if (slot [body_range ].info) return slot_ranged;
		467	}
		468
		469	return slot_none;
		470	}
		471
		472	bool
		473	object::change_weapon (object *ob)
		474	{
		475	if (current_weapon == ob)
		476	return true;
		477
		478	if (chosen_skill)
		479	chosen_skill->flag [FLAG_APPLIED] = false;
		480
		481	current_weapon = ob;
		482	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		483
		484	if (chosen_skill)
		485	chosen_skill->flag [FLAG_APPLIED] = true;
		486
		487	update_stats ();
		488
		489	if (ob)
		490	{
		491	// now check wether any body locations became invalid, in which case
		492	// we cannot apply the weapon at the moment.
		493	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		494	if (slot[i].used < 0)
493	*/	495	{
494	if (clone->type == PLAYER) owner=clone;	496	current_weapon = chosen_skill = 0;
495	else return;	497	update_stats ();
		498
		499	new_draw_info_format (NDI_UNIQUE, 0, this,
		500	"You try to balance your applied items all at once, but the %s is too much. "
		501	"You need to unapply some items first.", &ob->name);
		502	return false;
		503	}
		504
		505	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		506	}
		507	else
		508	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		509
		510	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
496	}	511	{
497	set_owner(op, owner);	512	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		513	&name, ob->debug_desc ());
		514	return false;
		515	}
498		516
499	}	517	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	}	518	}
518		519
519	/* Zero the key_values on op, decrementing the shared-string	520	/* Zero the key_values on op, decrementing the shared-string
520	* refcounts and freeing the links.	521	* refcounts and freeing the links.
521	*/	522	*/
		523	static void
522	static void free_key_values(object * op)	524	free_key_values (object *op)
523	{	525	{
524	for (key_value *i = op->key_values; i != 0; )	526	for (key_value *i = op->key_values; i; )
525	{	527	{
526	key_value *next = i->next;	528	key_value *next = i->next;
527	delete i;	529	delete i;
		530
528	i = next;	531	i = next;
529	}	532	}
530		533
531	op->key_values = 0;	534	op->key_values = 0;
532	}	535	}
533		536
534	/*	537	object &
535	* clear_object() frees everything allocated by an object, and also	538	object::operator =(const object &src)
536	* clears all variables and flags to default settings.
537	*/
538
539	void clear_object(object *op)
540	{	539	{
541	op->clear ();	540	bool is_freed = flag [FLAG_FREED];
		541	bool is_removed = flag [FLAG_REMOVED];
542		542
543	free_key_values (op);	543	*(object_copy *)this = src;
544		544
545	/* the memset will clear all these values for us, but we need	545	flag [FLAG_FREED] = is_freed;
546	* to reduce the refcount on them.	546	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		547
613	/* Copy over key_values, if any. */	548	/* Copy over key_values, if any. */
614	if (op2->key_values != NULL) {	549	if (src.key_values)
		550	{
615	key_value *tail = NULL;	551	key_value *tail = 0;
616	key_value *i;
617
618	op->key_values = NULL;	552	key_values = 0;
619		553
620	for (i = op2->key_values; i != NULL; i = i->next)	554	for (key_value *i = src.key_values; i; i = i->next)
621	{	555	{
622	key_value *new_link = new key_value;	556	key_value *new_link = new key_value;
623		557
624	new_link->next = NULL;	558	new_link->next = 0;
625	new_link->key = i->key;	559	new_link->key = i->key;
626	new_link->value = i->value;	560	new_link->value = i->value;
627		561
628	/* Try and be clever here, too. */	562	/* Try and be clever here, too. */
629	if (op->key_values == NULL)	563	if (!key_values)
630	{	564	{
631	op->key_values = new_link;	565	key_values = new_link;
632	tail = new_link;	566	tail = new_link;
633	}	567	}
634	else	568	else
635	{	569	{
636	tail->next = new_link;	570	tail->next = new_link;
637	tail = new_link;	571	tail = new_link;
638	}	572	}
639	}	573	}
640	}	574	}
641
642	update_ob_speed (op);
643	}	575	}
644		576
645	/*	577	/*
646	* expand_objects() allocates more objects for the list of unused objects.	578	* copy_to first frees everything allocated by the dst object,
647	* It is called from get_object() if the unused list is empty.	579	* and then copies the contents of itself into the second
		580	* object, allocating what needs to be allocated. Basically, any
		581	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
		582	* if the first object is freed, the pointers in the new object
		583	* will point at garbage.
		584	*/
		585	void
		586	object::copy_to (object *dst)
		587	{
		588	*dst = *this;
		589
		590	if (speed < 0)
		591	dst->speed_left = speed_left - rndm ();
		592
		593	dst->set_speed (dst->speed);
		594	}
		595
		596	void
		597	object::instantiate ()
		598	{
		599	if (!uuid.seq) // HACK
		600	uuid = gen_uuid ();
		601
		602	speed_left = -0.1f;
		603	/* copy the body_info to the body_used - this is only really
		604	* need for monsters, but doesn't hurt to do it for everything.
		605	* by doing so, when a monster is created, it has good starting
		606	* values for the body_used info, so when items are created
		607	* for it, they can be properly equipped.
648	*/	608	*/
		609	for (int i = NUM_BODY_LOCATIONS; i--; )
		610	slot[i].used = slot[i].info;
649		611
650	void expand_objects(void) {	612	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	}	613	}
675		614
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;	615	object *
685		616	object::clone ()
686	if(free_objects==NULL)	617	{
687	expand_objects();	618	object *neu = create ();
688		619	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;	620	return neu;
720	}	621	}
721		622
722	/*	623	/*
723	* If an object with the IS_TURNABLE() flag needs to be turned due	624	* 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	625	* 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.	626	* be called to update the face variable, _and_ how it looks on the map.
726	*/	627	*/
727		628	void
728	void update_turn_face(object *op) {	629	update_turn_face (object *op)
		630	{
729	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	631	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
730	return;	632	return;
		633
731	SET_ANIMATION(op, op->direction);	634	SET_ANIMATION (op, op->direction);
732	update_object(op,UP_OBJ_FACE);	635	update_object (op, UP_OBJ_FACE);
733	}	636	}
734		637
735	/*	638	/*
736	* Updates the speed of an object. If the speed changes from 0 to another	639	* 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.	640	* 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.	641	* This function needs to be called whenever the speed of an object changes.
739	*/	642	*/
740		643	void
741	void update_ob_speed(object *op) {	644	object::set_speed (float speed)
742	extern int arch_init;	645	{
743		646	if (flag [FLAG_FREED] && speed)
744	/* No reason putting the archetypes objects on the speed list,	647	{
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);	648	LOG (llevError, "Object %s is freed but has speed.\n", &name);
750	#ifdef MANY_CORES
751	abort();
752	#else
753	op->speed = 0;	649	speed = 0;
754	#endif
755	}	650	}
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		651
764	/* process_events() expects us to insert the object at the beginning	652	this->speed = speed;
765	* of the list. */	653
766	op->active_next = active_objects;	654	if (has_active_speed ())
767	if (op->active_next!=NULL)	655	activate ();
768	op->active_next->active_prev = op;
769	active_objects = op;
770	}
771	else {	656	else
772	/* If not on the active list, nothing needs to be done */	657	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	}	658	}
790		659
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	/*	660	/*
820	* update_object() updates the array which represents the map.	661	* update_object() updates the the map.
821	* It takes into account invisible objects (and represent squares covered	662	* It takes into account invisible objects (and represent squares covered
822	* by invisible objects by whatever is below them (unless it's another	663	* by invisible objects by whatever is below them (unless it's another
823	* invisible object, etc...)	664	* invisible object, etc...)
824	* If the object being updated is beneath a player, the look-window	665	* 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	666	* of that player is updated (this might be a suboptimal way of
826	* updating that window, though, since update_object() is called _often_)	667	* updating that window, though, since update_object() is called _often_)
827	*	668	*
828	* action is a hint of what the caller believes need to be done.	669	* 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:	670	* current action are:
834	* UP_OBJ_INSERT: op was inserted	671	* UP_OBJ_INSERT: op was inserted
835	* UP_OBJ_REMOVE: op was removed	672	* UP_OBJ_REMOVE: op was removed
836	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	673	* 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.	674	* as that is easier than trying to look at what may have changed.
838	* UP_OBJ_FACE: only the objects face has changed.	675	* UP_OBJ_FACE: only the objects face has changed.
839	*/	676	*/
840		677	void
841	void update_object(object *op, int action) {	678	update_object (object *op, int action)
842	int update_now=0, flags;	679	{
843	MoveType move_on, move_off, move_block, move_slow;
844
845	if (op == NULL) {	680	if (op == NULL)
		681	{
846	/* this should never happen */	682	/* this should never happen */
847	LOG(llevDebug,"update_object() called for NULL object.\n");	683	LOG (llevDebug, "update_object() called for NULL object.\n");
848	return;	684	return;
849	}
850		685	}
851	if(op->env!=NULL) {	686
		687	if (op->env)
		688	{
852	/* Animation is currently handled by client, so nothing	689	/* Animation is currently handled by client, so nothing
853	* to do in this case.	690	* to do in this case.
854	*/	691	*/
855	return;	692	return;
856	}	693	}
857		694
858	/* If the map is saving, don't do anything as everything is	695	/* If the map is saving, don't do anything as everything is
859	* going to get freed anyways.	696	* going to get freed anyways.
860	*/	697	*/
861	if (!op->map || op->map->in_memory == MAP_SAVING) return;	698	if (!op->map || op->map->in_memory == MAP_SAVING)
862		699	return;
		700
863	/* make sure the object is within map boundaries */	701	/* make sure the object is within map boundaries */
864	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	702	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)) {	703	{
866	LOG(llevError,"update_object() called for object out of map!\n");	704	LOG (llevError, "update_object() called for object out of map!\n");
867	#ifdef MANY_CORES	705	#ifdef MANY_CORES
868	abort();	706	abort ();
869	#endif	707	#endif
870	return;	708	return;
871	}
872		709	}
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		710
		711	mapspace &m = op->ms ();
		712
		713	if (!(m.flags_ & P_UPTODATE))
		714	/* nop */;
880	if (action == UP_OBJ_INSERT) {	715	else if (action == UP_OBJ_INSERT)
		716	{
		717	// this is likely overkill, TODO: revisit (schmorp)
881	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	718	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))	719	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
885	update_now=1;	720	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
886		721	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		722	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
887	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	723	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
888	update_now=1;	724	|| (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;	725	|| (m.move_off | op->move_off ) != m.move_off
		726	|| (m.move_slow | op->move_slow) != m.move_slow
895	/* This isn't perfect, but I don't expect a lot of objects to	727	/* This isn't perfect, but I don't expect a lot of objects to
896	* to have move_allow right now.	728	* to have move_allow right now.
897	*/	729	*/
898	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	730	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
899	update_now=1;	731	|| 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;	732	m.flags_ = 0;
901	}	733	}
902	/* if the object is being removed, we can't make intelligent	734	/* if the object is being removed, we can't make intelligent
903	* decisions, because remove_ob can't really pass the object	735	* decisions, because remove_ob can't really pass the object
904	* that is being removed.	736	* that is being removed.
905	*/	737	*/
906	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	738	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
907	update_now=1;	739	m.flags_ = 0;
908	} else if (action == UP_OBJ_FACE) {	740	else if (action == UP_OBJ_FACE)
909	/* Nothing to do for that case */	741	/* Nothing to do for that case */ ;
910	}
911	else {	742	else
912	LOG(llevError,"update_object called with invalid action: %d\n", action);	743	LOG (llevError, "update_object called with invalid action: %d\n", action);
913	}
914		744
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)	745	if (op->more)
921	update_object(op->more, action);	746	update_object (op->more, action);
922	}	747	}
923		748
		749	object::object ()
		750	{
		751	SET_FLAG (this, FLAG_REMOVED);
924		752
925	/*	753	expmul = 1.0;
926	* free_object() frees everything allocated by an object, removes	754	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	}	755	}
939	void free_object2(object *ob, int free_inventory) {
940	object *tmp,*op;
941		756
942	ob->clear ();	757	object::~object ()
		758	{
		759	unlink ();
943		760
944	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {	761	free_key_values (this);
945	LOG(llevDebug,"Free object called with non removed object\n");	762	}
946	dump_object(ob);	763
947	#ifdef MANY_CORES	764	static int object_count;
948	abort();	765
949	#endif	766	void object::link ()
950	}	767	{
951	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {	768	assert (!index);//D
952	LOG(llevMonster,"Warning: tried to free friendly object.\n");	769	uuid = gen_uuid ();
953	remove_friendly_object(ob);	770	count = ++object_count;
954	}	771
955	if(QUERY_FLAG(ob,FLAG_FREED)) {	772	refcnt_inc ();
956	dump_object(ob);	773	objects.insert (this);
957	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	774	}
		775
		776	void object::unlink ()
		777	{
		778	if (!index)
958	return;	779	return;
		780
		781	objects.erase (this);
		782	refcnt_dec ();
		783	}
		784
		785	void
		786	object::activate ()
		787	{
		788	/* If already on active list, don't do anything */
		789	if (active)
		790	return;
		791
		792	if (has_active_speed ())
		793	actives.insert (this);
		794	}
		795
		796	void
		797	object::activate_recursive ()
		798	{
		799	activate ();
		800
		801	for (object *op = inv; op; op = op->below)
		802	op->activate_recursive ();
		803	}
		804
		805	/* This function removes object 'op' from the list of active
		806	* objects.
		807	* This should only be used for style maps or other such
		808	* reference maps where you don't want an object that isn't
		809	* in play chewing up cpu time getting processed.
		810	* The reverse of this is to call update_ob_speed, which
		811	* will do the right thing based on the speed of the object.
		812	*/
		813	void
		814	object::deactivate ()
		815	{
		816	/* If not on the active list, nothing needs to be done */
		817	if (!active)
		818	return;
		819
		820	actives.erase (this);
		821	}
		822
		823	void
		824	object::deactivate_recursive ()
		825	{
		826	for (object *op = inv; op; op = op->below)
		827	op->deactivate_recursive ();
		828
		829	deactivate ();
		830	}
		831
		832	void
		833	object::set_flag_inv (int flag, int value)
		834	{
		835	for (object *op = inv; op; op = op->below)
959	}	836	{
960	if(ob->more!=NULL) {	837	op->flag [flag] = value;
961	free_object2(ob->more, free_inventory);	838	op->set_flag_inv (flag, value);
962	ob->more=NULL;
963	}	839	}
964	if (ob->inv) {	840	}
		841
		842	/*
		843	* Remove and free all objects in the inventory of the given object.
		844	* object.c ?
		845	*/
		846	void
		847	object::destroy_inv (bool drop_to_ground)
		848	{
		849	// need to check first, because the checks below might segfault
		850	// as we might be on an invalid mapspace and crossfire code
		851	// is too buggy to ensure that the inventory is empty.
		852	// corollary: if you create arrows etc. with stuff in tis inventory,
		853	// cf will crash below with off-map x and y
		854	if (!inv)
		855	return;
		856
965	/* Only if the space blocks everything do we not process -	857	/* Only if the space blocks everything do we not process -
966	* if some form of movemnt is allowed, let objects	858	* if some form of movement is allowed, let objects
967	* drop on that space.	859	* drop on that space.
968	*/	860	*/
969	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	861	if (!drop_to_ground
970	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	862	|| !map
		863	|| map->in_memory != MAP_IN_MEMORY
		864	|| map->nodrop
		865	|| ms ().move_block == MOVE_ALL)
		866	{
		867	while (inv)
971	{	868	{
972	op=ob->inv;	869	inv->destroy_inv (drop_to_ground);
973	while(op!=NULL) {	870	inv->destroy ();
974	tmp=op->below;
975	remove_ob(op);
976	free_object2(op, free_inventory);
977	op=tmp;
978	}
979	}	871	}
		872	}
		873	else
980	else { /* Put objects in inventory onto this space */	874	{ /* Put objects in inventory onto this space */
981	op=ob->inv;	875	while (inv)
982	while(op!=NULL) {	876	{
983	tmp=op->below;	877	object *op = inv;
984	remove_ob(op);	878
985	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||	879	if (op->flag [FLAG_STARTEQUIP]
986	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))	880	|| op->flag [FLAG_NO_DROP]
987	free_object(op);	881	|| op->type == RUNE
		882	|| op->type == TRAP
		883	|| op->flag [FLAG_IS_A_TEMPLATE]
		884	|| op->flag [FLAG_DESTROY_ON_DEATH])
		885	op->destroy ();
988	else {	886	else
989	op->x=ob->x;	887	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	}	888	}
996	}	889	}
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	}	890	}
1038		891
1039	/*	892	object *object::create ()
1040	* count_free() returns the number of objects on the list of free objects.
1041	*/
1042
1043	int count_free ()
1044	{	893	{
1045	int i=0;
1046	object *tmp=free_objects;	894	object *op = new object;
1047	while(tmp!=NULL)	895	op->link ();
1048	tmp=tmp->next, i++;
1049	return i;	896	return op;
1050	}	897	}
1051		898
1052	/*	899	void
1053	* count_used() returns the number of objects on the list of used objects.	900	object::do_destroy ()
1054	*/
1055
1056	int count_used()
1057	{	901	{
1058	int i=0;	902	attachable::do_destroy ();
1059	object *tmp=objects;	903
1060	while(tmp!=NULL)	904	if (flag [FLAG_IS_LINKED])
1061	tmp=tmp->next, i++;	905	remove_button_link (this);
		906
		907	if (flag [FLAG_FRIENDLY])
		908	remove_friendly_object (this);
		909
		910	if (!flag [FLAG_REMOVED])
		911	remove ();
		912
		913	destroy_inv (true);
		914
		915	deactivate ();
		916	unlink ();
		917
		918	flag [FLAG_FREED] = 1;
		919
		920	// hack to ensure that freed objects still have a valid map
		921	{
		922	static maptile *freed_map; // freed objects are moved here to avoid crashes
		923
		924	if (!freed_map)
		925	{
		926	freed_map = new maptile;
		927
		928	freed_map->name = "/internal/freed_objects_map";
		929	freed_map->width = 3;
		930	freed_map->height = 3;
		931
		932	freed_map->alloc ();
		933	freed_map->in_memory = MAP_IN_MEMORY;
		934	}
		935
		936	map = freed_map;
		937	x = 1;
		938	y = 1;
		939	}
		940
		941	head = 0;
		942
		943	if (more)
		944	{
		945	more->destroy ();
		946	more = 0;
		947	}
		948
		949	// clear those pointers that likely might have circular references to us
		950	owner = 0;
		951	enemy = 0;
		952	attacked_by = 0;
		953	}
		954
		955	void
		956	object::destroy (bool destroy_inventory)
		957	{
		958	if (destroyed ())
1062	return i;	959	return;
1063	}
1064		960
1065	/*	961	if (destroy_inventory)
1066	* count_active() returns the number of objects on the list of active objects.	962	destroy_inv (false);
1067	*/
1068		963
1069	int count_active()	964	attachable::destroy ();
1070	{
1071	int i=0;
1072	object *tmp=active_objects;
1073	while(tmp!=NULL)
1074	tmp=tmp->active_next, i++;
1075	return i;
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	for (tmp = ms.bot; tmp; tmp = tmp->above)
1173	y = op->y;	1088	{
1174	m = get_map_from_coord(op->map, &x, &y);	1089	/* No point updating the players look faces if he is the object
1175		1090	* being removed.
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	*/	1091	*/
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		1092
1190	/* Re did the following section of code - it looks like it had	1093	if (tmp->type == PLAYER && tmp != this)
1191	* lots of logic for things we no longer care about	1094	{
1192	*/	1095	/* If a container that the player is currently using somehow gets
1193		1096	* removed (most likely destroyed), update the player view
1194	/* link the object above us */	1097	* appropriately.
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	*/	1098	*/
1208	if(GET_MAP_OB(m,x,y)!=op) {	1099	if (tmp->container == this)
1209	dump_object(op);	1100	{
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);	1101	flag [FLAG_APPLIED] = 0;
1211	dump_object(GET_MAP_OB(m,x,y));	1102	tmp->container = 0;
1212	LOG(llevError,"%s\n",errmsg);	1103	}
		1104
		1105	if (tmp->contr->ns)
		1106	tmp->contr->ns->floorbox_update ();
		1107	}
		1108
		1109	/* See if object moving off should effect something */
		1110	if (check_walk_off
		1111	&& ((move_type & tmp->move_off)
		1112	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1113	{
		1114	move_apply (tmp, this, 0);
		1115
		1116	if (destroyed ())
		1117	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
		1118	}
		1119
		1120	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
		1121	//TODO: why is this horrible hacka fix? get rid of this code=bug! (schmorp)
		1122	if (tmp->above == tmp)
		1123	tmp->above = 0;
		1124
		1125	last = tmp;
1213	}	1126	}
1214	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1215	}
1216	op->above=NULL;
1217	op->below=NULL;
1218		1127
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
1231	* removed (most likely destroyed), update the player view
1232	* appropriately.
1233	*/
1234	if (tmp->container==op) {
1235	CLEAR_FLAG(op, FLAG_APPLIED);
1236	tmp->container=NULL;
1237	}
1238	tmp->contr->socket.update_look=1;
1239	}
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
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 */	1128	/* last == NULL if there are no objects on this space */
1258	if (last==NULL) {	1129	//TODO: this makes little sense, why only update the topmost object?
1259	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1130	if (!last)
1260	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1131	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	1132	else
1268	update_object(last, UP_OBJ_REMOVE);	1133	update_object (last, UP_OBJ_REMOVE);
1269		1134
1270	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1135	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1271	update_all_los(op->map, op->x, op->y);	1136	update_all_los (map, x, y);
1272		1137	}
1273	}	1138	}
1274		1139
1275	/*	1140	/*
1276	* merge_ob(op,top):	1141	* merge_ob(op,top):
1277	*	1142	*
1278	* This function goes through all objects below and including top, and	1143	* This function goes through all objects below and including top, and
1279	* merges op to the first matching object.	1144	* merges op to the first matching object.
1280	* If top is NULL, it is calculated.	1145	* If top is NULL, it is calculated.
1281	* Returns pointer to object if it succeded in the merge, otherwise NULL	1146	* Returns pointer to object if it succeded in the merge, otherwise NULL
1282	*/	1147	*/
1283		1148	object *
1284	object *merge_ob(object *op, object *top) {	1149	merge_ob (object *op, object *top)
		1150	{
1285	if(!op->nrof)	1151	if (!op->nrof)
1286	return 0;	1152	return 0;
1287	if(top==NULL)	1153
		1154	if (top)
1288	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1155	for (top = op; top && top->above; top = top->above)
		1156	;
		1157
1289	for(;top!=NULL;top=top->below) {	1158	for (; top; top = top->below)
		1159	{
1290	if(top==op)	1160	if (top == op)
1291	continue;	1161	continue;
1292	if (CAN_MERGE(op,top))	1162
1293	{	1163	if (object::can_merge (op, top))
		1164	{
1294	top->nrof+=op->nrof;	1165	top->nrof += op->nrof;
		1166
1295	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1167	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1296	op->weight = 0; /* Don't want any adjustements now */	1168	op->weight = 0; /* Don't want any adjustements now */
1297	remove_ob(op);	1169	op->destroy ();
1298	free_object(op);
1299	return top;	1170	return top;
1300	}	1171	}
1301	}	1172	}
		1173
1302	return NULL;	1174	return 0;
1303	}	1175	}
1304		1176
		1177	void
		1178	object::expand_tail ()
		1179	{
		1180	if (more)
		1181	return;
		1182
		1183	object *prev = this;
		1184
		1185	for (archetype *at = arch->more; at; at = at->more)
		1186	{
		1187	object *op = arch_to_object (at);
		1188
		1189	op->name = name;
		1190	op->name_pl = name_pl;
		1191	op->title = title;
		1192
		1193	op->head = this;
		1194	prev->more = op;
		1195
		1196	prev = op;
		1197	}
		1198	}
		1199
1305	/*	1200	/*
1306	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1201	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1307	* job preparing multi-part monsters	1202	* job preparing multi-part monsters.
1308	*/	1203	*/
		1204	object *
1309	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1205	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1310	object* tmp;	1206	{
1311	if (op->head)	1207	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1312	op=op->head;	1208	{
1313	for (tmp=op;tmp;tmp=tmp->more){
1314	tmp->x=x+tmp->arch->clone.x;	1209	tmp->x = x + tmp->arch->clone.x;
1315	tmp->y=y+tmp->arch->clone.y;	1210	tmp->y = y + tmp->arch->clone.y;
1316	}	1211	}
		1212
1317	return insert_ob_in_map (op, m, originator, flag);	1213	return insert_ob_in_map (op, m, originator, flag);
1318	}	1214	}
1319		1215
1320	/*	1216	/*
1321	* insert_ob_in_map (op, map, originator, flag):	1217	* insert_ob_in_map (op, map, originator, flag):
1322	* This function inserts the object in the two-way linked list	1218	* This function inserts the object in the two-way linked list
…		…
1335	* Return value:	1231	* Return value:
1336	* new object if 'op' was merged with other object	1232	* new object if 'op' was merged with other object
1337	* NULL if 'op' was destroyed	1233	* NULL if 'op' was destroyed
1338	* just 'op' otherwise	1234	* just 'op' otherwise
1339	*/	1235	*/
1340		1236	object *
1341	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1237	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1342	{	1238	{
		1239	assert (!op->flag [FLAG_FREED]);
		1240
1343	object *tmp, *top, *floor=NULL;	1241	object *tmp, *top, *floor = NULL;
1344	sint16 x,y;
1345		1242
1346	if (QUERY_FLAG (op, FLAG_FREED)) {	1243	op->remove ();
1347	LOG (llevError, "Trying to insert freed object!\n");	1244
1348	return NULL;	1245	#if 0
1349	}	1246	if (!m->active != !op->active)
1350	if(m==NULL) {	1247	if (m->active)
1351	dump_object(op);	1248	op->activate_recursive ();
1352	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);	1249	else
1353	return op;	1250	op->deactivate_recursive ();
1354	}	1251	#endif
		1252
1355	if(out_of_map(m,op->x,op->y)) {	1253	if (out_of_map (m, op->x, op->y))
1356	dump_object(op);	1254	{
1357	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1255	LOG (llevError, "Trying to insert object outside the map.\n%s\n", op->debug_desc ());
1358	#ifdef MANY_CORES	1256	#ifdef MANY_CORES
1359	/* Better to catch this here, as otherwise the next use of this object	1257	/* 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	1258	* is likely to cause a crash. Better to find out where it is getting
1361	* improperly inserted.	1259	* improperly inserted.
1362	*/	1260	*/
1363	abort();	1261	abort ();
1364	#endif	1262	#endif
1365	return op;	1263	return op;
		1264	}
		1265
		1266	if (object *more = op->more)
1366	}	1267	{
1367	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1268	if (!insert_ob_in_map (more, m, originator, flag))
1368	dump_object(op);	1269	{
1369	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);	1270	if (!op->head)
		1271	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
		1272
1370	return op;	1273	return 0;
1371	}
1372	if(op->more!=NULL) {
1373	/* The part may be on a different map. */
1374
1375	object *more = op->more;
1376
1377	/* We really need the caller to normalize coordinates - if
1378	* we set the map, that doesn't work if the location is within
1379	* a map and this is straddling an edge. So only if coordinate
1380	* is clear wrong do we normalize it.
1381	*/
1382	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {
1383	more->map = get_map_from_coord(m, &more->x, &more->y);
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	}	1274	}
		1275	}
1390		1276
1391	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1277	CLEAR_FLAG (op, FLAG_REMOVED);
1392	if ( ! op->head)	1278
1393	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1279	/* Ideally, the caller figures this out. However, it complicates a lot
1394	return NULL;	1280	* of areas of callers (eg, anything that uses find_free_spot would now
		1281	* need extra work
		1282	*/
		1283	if (!xy_normalise (m, op->x, op->y))
		1284	return 0;
		1285
		1286	op->map = m;
		1287	mapspace &ms = op->ms ();
		1288
		1289	/* this has to be done after we translate the coordinates.
		1290	*/
		1291	if (op->nrof && !(flag & INS_NO_MERGE))
		1292	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1293	if (object::can_merge (op, tmp))
		1294	{
		1295	op->nrof += tmp->nrof;
		1296	tmp->destroy ();
1395	}	1297	}
		1298
		1299	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1300	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1301
		1302	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1303	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1304
		1305	if (flag & INS_BELOW_ORIGINATOR)
1396	}	1306	{
1397	CLEAR_FLAG(op,FLAG_REMOVED);	1307	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1308	{
		1309	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1310	abort ();
		1311	}
1398		1312
1399	/* Ideally, the caller figures this out. However, it complicates a lot	1313	op->above = originator;
1400	* of areas of callers (eg, anything that uses find_free_spot would now	1314	op->below = originator->below;
1401	* need extra work
1402	*/
1403	op->map=get_map_from_coord(m, &op->x, &op->y);
1404	x = op->x;
1405	y = op->y;
1406		1315
1407	/* this has to be done after we translate the coordinates.	1316	if (op->below)
1408	*/	1317	op->below->above = op;
1409	if(op->nrof && !(flag & INS_NO_MERGE)) {	1318	else
1410	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1319	ms.bot = op;
1411	if (CAN_MERGE(op,tmp)) {	1320
1412	op->nrof+=tmp->nrof;	1321	/* since *below* originator, no need to update top */
1413	remove_ob(tmp);	1322	originator->below = op;
1414	free_object(tmp);	1323	}
		1324	else
		1325	{
		1326	top = ms.bot;
		1327
		1328	/* If there are other objects, then */
		1329	if ((!(flag & INS_MAP_LOAD)) && top)
		1330	{
		1331	object *last = 0;
		1332
		1333	/*
		1334	* If there are multiple objects on this space, we do some trickier handling.
		1335	* We've already dealt with merging if appropriate.
		1336	* Generally, we want to put the new object on top. But if
		1337	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1338	* floor, we want to insert above that and no further.
		1339	* Also, if there are spell objects on this space, we stop processing
		1340	* once we get to them. This reduces the need to traverse over all of
		1341	* them when adding another one - this saves quite a bit of cpu time
		1342	* when lots of spells are cast in one area. Currently, it is presumed
		1343	* that flying non pickable objects are spell objects.
		1344	*/
		1345	for (top = ms.bot; top; top = top->above)
		1346	{
		1347	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1348	floor = top;
		1349
		1350	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1351	{
		1352	/* We insert above top, so we want this object below this */
		1353	top = top->below;
		1354	break;
		1355	}
		1356
		1357	last = top;
1415	}	1358	}
1416	}
1417		1359
1418	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1360	/* Don't want top to be NULL, so set it to the last valid object */
1419	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1361	top = last;
1420	if (!QUERY_FLAG(op, FLAG_ALIVE))
1421	CLEAR_FLAG(op, FLAG_NO_STEAL);
1422		1362
1423	if (flag & INS_BELOW_ORIGINATOR) {	1363	/* We let update_position deal with figuring out what the space
1424	if (originator->map != op->map || originator->x != op->x ||	1364	* looks like instead of lots of conditions here.
1425	originator->y != op->y) {	1365	* 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");	1366	*/
1427	abort();	1367
		1368	/* Have object 'fall below' other objects that block view.
		1369	* Unless those objects are exits.
		1370	* If INS_ON_TOP is used, don't do this processing
		1371	* Need to find the object that in fact blocks view, otherwise
		1372	* stacking is a bit odd.
		1373	*/
		1374	if (!(flag & INS_ON_TOP)
		1375	&& ms.flags () & P_BLOCKSVIEW
		1376	&& (op->face && !faces [op->face].visibility))
		1377	{
		1378	for (last = top; last != floor; last = last->below)
		1379	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1380	break;
		1381
		1382	/* Check to see if we found the object that blocks view,
		1383	* and make sure we have a below pointer for it so that
		1384	* we can get inserted below this one, which requires we
		1385	* set top to the object below us.
		1386	*/
		1387	if (last && last->below && last != floor)
		1388	top = last->below;
		1389	}
		1390	} /* If objects on this space */
		1391
		1392	if (flag & INS_MAP_LOAD)
		1393	top = ms.top;
		1394
		1395	if (flag & INS_ABOVE_FLOOR_ONLY)
		1396	top = floor;
		1397
		1398	/* Top is the object that our object (op) is going to get inserted above.
		1399	*/
		1400
		1401	/* First object on this space */
		1402	if (!top)
		1403	{
		1404	op->above = ms.bot;
		1405
		1406	if (op->above)
		1407	op->above->below = op;
		1408
		1409	op->below = 0;
		1410	ms.bot = op;
1428	}	1411	}
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 {	1412	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 */	1413	{ /* get inserted into the stack above top */
1507	op->above = top->above;	1414	op->above = top->above;
		1415
		1416	if (op->above)
1508	if (op->above) op->above->below = op;	1417	op->above->below = op;
		1418
1509	op->below = top;	1419	op->below = top;
1510	top->above = op;	1420	top->above = op;
1511	}	1421	}
		1422
1512	if (op->above==NULL)	1423	if (!op->above)
1513	SET_MAP_TOP(op->map,op->x, op->y, op);	1424	ms.top = op;
1514	} /* else not INS_BELOW_ORIGINATOR */	1425	} /* else not INS_BELOW_ORIGINATOR */
1515		1426
1516	if(op->type==PLAYER)	1427	if (op->type == PLAYER)
		1428	{
1517	op->contr->do_los=1;	1429	op->contr->do_los = 1;
		1430	++op->map->players;
		1431	op->map->touch ();
		1432	}
1518		1433
		1434	op->map->dirty = true;
		1435
1519	/* If we have a floor, we know the player, if any, will be above	1436	/* If we have a floor, we know the player, if any, will be above
1520	* it, so save a few ticks and start from there.	1437	* it, so save a few ticks and start from there.
1521	*/	1438	*/
1522	if (!(flag & INS_MAP_LOAD))	1439	if (!(flag & INS_MAP_LOAD))
1523	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1440	if (object *pl = ms.player ())
1524	if (tmp->type == PLAYER)	1441	if (pl->contr->ns)
1525	tmp->contr->socket.update_look=1;	1442	pl->contr->ns->floorbox_update ();
1526	}
1527		1443
1528	/* If this object glows, it may affect lighting conditions that are	1444	/* If this object glows, it may affect lighting conditions that are
1529	* visible to others on this map. But update_all_los is really	1445	* 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	1446	* 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	1447	* on the map will get recalculated. The players could very well
1532	* be far away from this change and not affected in any way -	1448	* be far away from this change and not affected in any way -
1533	* this should get redone to only look for players within range,	1449	* this should get redone to only look for players within range,
1534	* or just updating the P_NEED_UPDATE for spaces within this area	1450	* or just updating the P_UPTODATE for spaces within this area
1535	* of effect may be sufficient.	1451	* of effect may be sufficient.
1536	*/	1452	*/
1537	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1453	if (op->map->darkness && (op->glow_radius != 0))
1538	update_all_los(op->map, op->x, op->y);	1454	update_all_los (op->map, op->x, op->y);
1539		1455
1540
1541	/* updates flags (blocked, alive, no magic, etc) for this map space */	1456	/* updates flags (blocked, alive, no magic, etc) for this map space */
1542	update_object(op,UP_OBJ_INSERT);	1457	update_object (op, UP_OBJ_INSERT);
1543		1458
		1459	INVOKE_OBJECT (INSERT, op);
1544		1460
1545	/* Don't know if moving this to the end will break anything. However,	1461	/* 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.	1462	* we want to have floorbox_update called before calling this.
1547	*	1463	*
1548	* check_move_on() must be after this because code called from	1464	* check_move_on() must be after this because code called from
1549	* check_move_on() depends on correct map flags (so functions like	1465	* check_move_on() depends on correct map flags (so functions like
1550	* blocked() and wall() work properly), and these flags are updated by	1466	* blocked() and wall() work properly), and these flags are updated by
1551	* update_object().	1467	* update_object().
1552	*/	1468	*/
1553		1469
1554	/* if this is not the head or flag has been passed, don't check walk on status */	1470	/* 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) {	1471	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1472	{
1557	if (check_move_on(op, originator))	1473	if (check_move_on (op, originator))
1558	return NULL;	1474	return 0;
1559		1475
1560	/* If we are a multi part object, lets work our way through the check	1476	/* If we are a multi part object, lets work our way through the check
1561	* walk on's.	1477	* walk on's.
1562	*/	1478	*/
1563	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1479	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1564	if (check_move_on (tmp, originator))	1480	if (check_move_on (tmp, originator))
1565	return NULL;	1481	return 0;
1566	}	1482	}
		1483
1567	return op;	1484	return op;
1568	}	1485	}
1569		1486
1570	/* this function inserts an object in the map, but if it	1487	/* 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.	1488	* 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.	1489	* op is the object to insert it under: supplies x and the map.
1573	*/	1490	*/
		1491	void
1574	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1492	replace_insert_ob_in_map (const char *arch_string, object *op)
1575	object *tmp;	1493	{
1576	object *tmp1;	1494	object *tmp, *tmp1;
1577		1495
1578	/* first search for itself and remove any old instances */	1496	/* first search for itself and remove any old instances */
1579		1497
1580	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1498	for (tmp = op->ms ().bot; tmp; tmp = tmp->above)
1581	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1499	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1582	remove_ob(tmp);	1500	tmp->destroy ();
1583	free_object(tmp);
1584	}
1585	}
1586		1501
1587	tmp1=arch_to_object(find_archetype(arch_string));	1502	tmp1 = arch_to_object (archetype::find (arch_string));
1588		1503
1589		1504	tmp1->x = op->x;
1590	tmp1->x = op->x; tmp1->y = op->y;	1505	tmp1->y = op->y;
1591	insert_ob_in_map(tmp1,op->map,op,0);	1506	insert_ob_in_map (tmp1, op->map, op, 0);
1592	}	1507	}
		1508
		1509	object *
		1510	object::insert_at (object *where, object *originator, int flags)
		1511	{
		1512	return where->map->insert (this, where->x, where->y, originator, flags);
		1513	}
1593		1514
1594	/*	1515	/*
1595	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1516	* 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	1517	* is returned contains nr objects, and the remaining parts contains
1597	* the rest (or is removed and freed if that number is 0).	1518	* the rest (or is removed and freed if that number is 0).
1598	* On failure, NULL is returned, and the reason put into the	1519	* On failure, NULL is returned, and the reason put into the
1599	* global static errmsg array.	1520	* global static errmsg array.
1600	*/	1521	*/
1601		1522	object *
1602	object *get_split_ob(object *orig_ob, uint32 nr) {	1523	get_split_ob (object *orig_ob, uint32 nr)
		1524	{
1603	object *newob;	1525	object *newob;
1604	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1526	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1605		1527
1606	if(orig_ob->nrof<nr) {	1528	if (orig_ob->nrof < nr)
1607	sprintf(errmsg,"There are only %d %ss.",	1529	{
1608	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1530	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1609	return NULL;	1531	return NULL;
1610	}	1532	}
		1533
1611	newob = object_create_clone(orig_ob);	1534	newob = object_create_clone (orig_ob);
		1535
1612	if((orig_ob->nrof-=nr)<1) {	1536	if ((orig_ob->nrof -= nr) < 1)
1613	if ( ! is_removed)	1537	orig_ob->destroy (1);
1614	remove_ob(orig_ob);
1615	free_object2(orig_ob, 1);
1616	}
1617	else if ( ! is_removed) {	1538	else if (!is_removed)
		1539	{
1618	if(orig_ob->env!=NULL)	1540	if (orig_ob->env != NULL)
1619	sub_weight (orig_ob->env,orig_ob->weight*nr);	1541	sub_weight (orig_ob->env, orig_ob->weight * nr);
1620	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1542	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1543	{
1621	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1544	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");	1545	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1624	return NULL;	1546	return NULL;
1625	}	1547	}
1626	}	1548	}
		1549
1627	newob->nrof=nr;	1550	newob->nrof = nr;
1628		1551
1629	return newob;	1552	return newob;
1630	}	1553	}
1631		1554
1632	/*	1555	/*
1633	* decrease_ob_nr(object, number) decreases a specified number from	1556	* decrease_ob_nr(object, number) decreases a specified number from
1634	* the amount of an object. If the amount reaches 0, the object	1557	* the amount of an object. If the amount reaches 0, the object
1635	* is subsequently removed and freed.	1558	* is subsequently removed and freed.
1636	*	1559	*
1637	* Return value: 'op' if something is left, NULL if the amount reached 0	1560	* Return value: 'op' if something is left, NULL if the amount reached 0
1638	*/	1561	*/
1639		1562	object *
1640	object *decrease_ob_nr (object *op, uint32 i)	1563	decrease_ob_nr (object *op, uint32 i)
1641	{	1564	{
1642	object *tmp;	1565	object *tmp;
1643	player *pl;
1644		1566
1645	if (i == 0) /* objects with op->nrof require this check */	1567	if (i == 0) /* objects with op->nrof require this check */
1646	return op;	1568	return op;
1647		1569
1648	if (i > op->nrof)	1570	if (i > op->nrof)
1649	i = op->nrof;	1571	i = op->nrof;
1650		1572
1651	if (QUERY_FLAG (op, FLAG_REMOVED))	1573	if (QUERY_FLAG (op, FLAG_REMOVED))
		1574	op->nrof -= i;
		1575	else if (op->env)
		1576	{
		1577	/* is this object in the players inventory, or sub container
		1578	* therein?
		1579	*/
		1580	tmp = op->in_player ();
		1581	/* nope. Is this a container the player has opened?
		1582	* If so, set tmp to that player.
		1583	* IMO, searching through all the players will mostly
		1584	* likely be quicker than following op->env to the map,
		1585	* and then searching the map for a player.
		1586	*/
		1587	if (!tmp)
		1588	for_all_players (pl)
		1589	if (pl->ob->container == op->env)
		1590	{
		1591	tmp = pl->ob;
		1592	break;
		1593	}
		1594
		1595	if (i < op->nrof)
		1596	{
		1597	sub_weight (op->env, op->weight * i);
		1598	op->nrof -= i;
		1599	if (tmp)
		1600	esrv_send_item (tmp, op);
		1601	}
		1602	else
		1603	{
		1604	op->remove ();
		1605	op->nrof = 0;
		1606	if (tmp)
		1607	esrv_del_item (tmp->contr, op->count);
		1608	}
1652	{	1609	}
		1610	else
		1611	{
		1612	object *above = op->above;
		1613
		1614	if (i < op->nrof)
1653	op->nrof -= i;	1615	op->nrof -= i;
1654	}	1616	else
1655	else if (op->env != NULL)
1656	{
1657	/* is this object in the players inventory, or sub container
1658	* therein?
1659	*/	1617	{
1660	tmp = is_player_inv (op->env);	1618	op->remove ();
1661	/* nope. Is this a container the player has opened?	1619	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	}	1620	}
1673		1621
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 */	1622	/* Since we just removed op, op->above is null */
1699	for (tmp = above; tmp != NULL; tmp = tmp->above)	1623	for (tmp = above; tmp; tmp = tmp->above)
1700	if (tmp->type == PLAYER) {	1624	if (tmp->type == PLAYER)
		1625	{
1701	if (op->nrof)	1626	if (op->nrof)
1702	esrv_send_item(tmp, op);	1627	esrv_send_item (tmp, op);
1703	else	1628	else
1704	esrv_del_item(tmp->contr, op->count);	1629	esrv_del_item (tmp->contr, op->count);
1705	}	1630	}
1706	}	1631	}
1707		1632
1708	if (op->nrof) {	1633	if (op->nrof)
1709	return op;	1634	return op;
1710	} else {	1635	else
1711	free_object (op);	1636	{
		1637	op->destroy ();
1712	return NULL;	1638	return 0;
1713	}	1639	}
1714	}	1640	}
1715		1641
1716	/*	1642	/*
1717	* add_weight(object, weight) adds the specified weight to an object,	1643	* add_weight(object, weight) adds the specified weight to an object,
1718	* and also updates how much the environment(s) is/are carrying.	1644	* and also updates how much the environment(s) is/are carrying.
1719	*/	1645	*/
1720		1646	void
1721	void add_weight (object *op, signed long weight) {	1647	add_weight (object *op, signed long weight)
		1648	{
1722	while (op!=NULL) {	1649	while (op != NULL)
		1650	{
1723	if (op->type == CONTAINER) {	1651	if (op->type == CONTAINER)
1724	weight=(signed long)(weight*(100-op->stats.Str)/100);	1652	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1725	}	1653
1726	op->carrying+=weight;	1654	op->carrying += weight;
1727	op=op->env;	1655	op = op->env;
1728	}	1656	}
1729	}	1657	}
1730		1658
		1659	object *
		1660	insert_ob_in_ob (object *op, object *where)
		1661	{
		1662	if (!where)
		1663	{
		1664	char *dump = dump_object (op);
		1665	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1666	free (dump);
		1667	return op;
		1668	}
		1669
		1670	if (where->head)
		1671	{
		1672	LOG (llevDebug, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1673	where = where->head;
		1674	}
		1675
		1676	return where->insert (op);
		1677	}
		1678
1731	/*	1679	/*
1732	* insert_ob_in_ob(op,environment):	1680	* env->insert (op)
1733	* This function inserts the object op in the linked list	1681	* This function inserts the object op in the linked list
1734	* inside the object environment.	1682	* inside the object environment.
1735	*	1683	*
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	1684	* The function returns now pointer to inserted item, and return value can
1742	* be != op, if items are merged. -Tero	1685	* be != op, if items are merged. -Tero
1743	*/	1686	*/
1744		1687	object *
1745	object *insert_ob_in_ob(object *op,object *where) {	1688	object::insert (object *op)
		1689	{
1746	object *tmp, *otmp;	1690	object *tmp, *otmp;
1747		1691
1748	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1692	if (!QUERY_FLAG (op, FLAG_REMOVED))
1749	dump_object(op);	1693	op->remove ();
1750	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1694
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) {	1695	if (op->more)
		1696	{
1764	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1697	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1765	&op->name, op->count);
1766	return op;	1698	return op;
1767	}	1699	}
		1700
1768	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1701	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1769	CLEAR_FLAG(op, FLAG_REMOVED);	1702	CLEAR_FLAG (op, FLAG_REMOVED);
1770	if(op->nrof) {	1703	if (op->nrof)
		1704	{
1771	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1705	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1772	if ( CAN_MERGE(tmp,op) ) {	1706	if (object::can_merge (tmp, op))
		1707	{
1773	/* return the original object and remove inserted object	1708	/* return the original object and remove inserted object
1774	(client needs the original object) */	1709	(client needs the original object) */
1775	tmp->nrof += op->nrof;	1710	tmp->nrof += op->nrof;
1776	/* Weight handling gets pretty funky. Since we are adding to	1711	/* Weight handling gets pretty funky. Since we are adding to
1777	* tmp->nrof, we need to increase the weight.	1712	* tmp->nrof, we need to increase the weight.
1778	*/	1713	*/
1779	add_weight (where, op->weight*op->nrof);	1714	add_weight (this, op->weight * op->nrof);
1780	SET_FLAG(op, FLAG_REMOVED);	1715	SET_FLAG (op, FLAG_REMOVED);
1781	free_object(op); /* free the inserted object */	1716	op->destroy (); /* free the inserted object */
1782	op = tmp;	1717	op = tmp;
1783	remove_ob (op); /* and fix old object's links */	1718	op->remove (); /* and fix old object's links */
1784	CLEAR_FLAG(op, FLAG_REMOVED);	1719	CLEAR_FLAG (op, FLAG_REMOVED);
1785	break;	1720	break;
1786	}	1721	}
1787		1722
1788	/* I assume combined objects have no inventory	1723	/* I assume combined objects have no inventory
1789	* We add the weight - this object could have just been removed	1724	* We add the weight - this object could have just been removed
1790	* (if it was possible to merge). calling remove_ob will subtract	1725	* (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	1726	* the weight, so we need to add it in again, since we actually do
1792	* the linking below	1727	* the linking below
1793	*/	1728	*/
1794	add_weight (where, op->weight*op->nrof);	1729	add_weight (this, op->weight * op->nrof);
		1730	}
1795	} else	1731	else
1796	add_weight (where, (op->weight+op->carrying));	1732	add_weight (this, (op->weight + op->carrying));
1797		1733
1798	otmp=is_player_inv(where);	1734	otmp = this->in_player ();
1799	if (otmp&&otmp->contr!=NULL) {	1735	if (otmp && otmp->contr)
1800	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1736	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1801	fix_player(otmp);	1737	otmp->update_stats ();
1802	}
1803		1738
1804	op->map=NULL;	1739	op->map = 0;
1805	op->env=where;	1740	op->env = this;
1806	op->above=NULL;	1741	op->above = 0;
1807	op->below=NULL;	1742	op->below = 0;
1808	op->x=0,op->y=0;	1743	op->x = 0, op->y = 0;
1809		1744
1810	/* reset the light list and los of the players on the map */	1745	/* reset the light list and los of the players on the map */
1811	if((op->glow_radius!=0)&&where->map)	1746	if ((op->glow_radius != 0) && map)
1812	{	1747	{
1813	#ifdef DEBUG_LIGHTS	1748	#ifdef DEBUG_LIGHTS
1814	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1749	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1815	op->name);
1816	#endif /* DEBUG_LIGHTS */	1750	#endif /* DEBUG_LIGHTS */
1817	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1751	if (map->darkness)
		1752	update_all_los (map, x, y);
1818	}	1753	}
1819		1754
1820	/* Client has no idea of ordering so lets not bother ordering it here.	1755	/* Client has no idea of ordering so lets not bother ordering it here.
1821	* It sure simplifies this function...	1756	* It sure simplifies this function...
1822	*/	1757	*/
1823	if (where->inv==NULL)	1758	if (!inv)
1824	where->inv=op;	1759	inv = op;
1825	else {	1760	else
		1761	{
1826	op->below = where->inv;	1762	op->below = inv;
1827	op->below->above = op;	1763	op->below->above = op;
1828	where->inv = op;	1764	inv = op;
1829	}	1765	}
		1766
		1767	INVOKE_OBJECT (INSERT, this);
		1768
1830	return op;	1769	return op;
1831	}	1770	}
1832		1771
1833	/*	1772	/*
1834	* Checks if any objects has a move_type that matches objects	1773	* Checks if any objects has a move_type that matches objects
…		…
1848	*	1787	*
1849	* MSW 2001-07-08: Check all objects on space, not just those below	1788	* 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	1789	* object being inserted. insert_ob_in_map may not put new objects
1851	* on top.	1790	* on top.
1852	*/	1791	*/
1853		1792	int
1854	int check_move_on (object *op, object *originator)	1793	check_move_on (object *op, object *originator)
1855	{	1794	{
1856	object *tmp;	1795	object *tmp;
1857	tag_t tag;
1858	mapstruct *m=op->map;	1796	maptile *m = op->map;
1859	int x=op->x, y=op->y;	1797	int x = op->x, y = op->y;
		1798
1860	MoveType move_on, move_slow, move_block;	1799	MoveType move_on, move_slow, move_block;
1861		1800
1862	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1801	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1863	return 0;	1802	return 0;
1864		1803
1865	tag = op->count;
1866
1867	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1804	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);	1805	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);	1806	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1870		1807
1871	/* if nothing on this space will slow op down or be applied,	1808	/* 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	1809	* 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	1810	* is set, as lots of objects don't have it set - we treat that
1874	* as walking.	1811	* as walking.
1875	*/	1812	*/
1876	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1813	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1877	return 0;	1814	return 0;
1878		1815
1879	/* This is basically inverse logic of that below - basically,	1816	/* This is basically inverse logic of that below - basically,
1880	* if the object can avoid the move on or slow move, they do so,	1817	* 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	1818	* but can't do it if the alternate movement they are using is
1882	* blocked. Logic on this seems confusing, but does seem correct.	1819	* blocked. Logic on this seems confusing, but does seem correct.
1883	*/	1820	*/
1884	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1821	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;	1822	return 0;
1886		1823
1887	/* The objects have to be checked from top to bottom.	1824	/* The objects have to be checked from top to bottom.
1888	* Hence, we first go to the top:	1825	* Hence, we first go to the top:
1889	*/	1826	*/
1890		1827
1891	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1828	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1892	tmp->above!=NULL; tmp=tmp->above) {	1829	{
1893	/* Trim the search when we find the first other spell effect	1830	/* Trim the search when we find the first other spell effect
1894	* this helps performance so that if a space has 50 spell objects,	1831	* this helps performance so that if a space has 50 spell objects,
1895	* we don't need to check all of them.	1832	* we don't need to check all of them.
1896	*/	1833	*/
1897	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1834	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1835	break;
		1836	}
		1837
		1838	for (; tmp; tmp = tmp->below)
1898	}	1839	{
1899	for(;tmp!=NULL; tmp=tmp->below) {	1840	if (tmp == op)
1900	if (tmp == op) continue; /* Can't apply yourself */	1841	continue; /* Can't apply yourself */
1901		1842
1902	/* Check to see if one of the movement types should be slowed down.	1843	/* 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	1844	* Second check makes sure that the movement types not being slowed
1904	* (~slow_move) is not blocked on this space - just because the	1845	* (~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	1846	* 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.	1847	* swim on that space, can't use it to avoid the penalty.
1907	*/	1848	*/
1908	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1849	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1850	{
1909	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1851	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)) {	1852	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1853	{
1912		1854
1913	float diff;	1855	float
1914
1915	diff = tmp->move_slow_penalty*FABS(op->speed);	1856	diff = tmp->move_slow_penalty * fabs (op->speed);
		1857
1916	if (op->type == PLAYER) {	1858	if (op->type == PLAYER)
1917	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1859	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))) {	1860	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1919	diff /= 4.0;	1861	diff /= 4.0;
1920	}	1862
1921	}
1922	op->speed_left -= diff;	1863	op->speed_left -= diff;
1923	}	1864	}
1924	}	1865	}
1925		1866
1926	/* Basically same logic as above, except now for actual apply. */	1867	/* Basically same logic as above, except now for actual apply. */
1927	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1868	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)) {	1869	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1930		1870	{
1931	move_apply(tmp, op, originator);	1871	move_apply (tmp, op, originator);
		1872
1932	if (was_destroyed (op, tag))	1873	if (op->destroyed ())
1933	return 1;	1874	return 1;
1934		1875
1935	/* what the person/creature stepped onto has moved the object	1876	/* what the person/creature stepped onto has moved the object
1936	* someplace new. Don't process any further - if we did,	1877	* someplace new. Don't process any further - if we did,
1937	* have a feeling strange problems would result.	1878	* have a feeling strange problems would result.
1938	*/	1879	*/
1939	if (op->map != m || op->x != x || op->y != y) return 0;	1880	if (op->map != m || op->x != x || op->y != y)
		1881	return 0;
1940	}	1882	}
1941	}	1883	}
		1884
1942	return 0;	1885	return 0;
1943	}	1886	}
1944		1887
1945	/*	1888	/*
1946	* present_arch(arch, map, x, y) searches for any objects with	1889	* present_arch(arch, map, x, y) searches for any objects with
1947	* a matching archetype at the given map and coordinates.	1890	* a matching archetype at the given map and coordinates.
1948	* The first matching object is returned, or NULL if none.	1891	* The first matching object is returned, or NULL if none.
1949	*/	1892	*/
1950		1893	object *
1951	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1894	present_arch (const archetype *at, maptile *m, int x, int y)
1952	object *tmp;	1895	{
1953	if(m==NULL || out_of_map(m,x,y)) {	1896	if (!m || out_of_map (m, x, y))
		1897	{
1954	LOG(llevError,"Present_arch called outside map.\n");	1898	LOG (llevError, "Present_arch called outside map.\n");
1955	return NULL;	1899	return NULL;
1956	}	1900	}
1957	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1901
		1902	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1958	if(tmp->arch == at)	1903	if (tmp->arch == at)
1959	return tmp;	1904	return tmp;
		1905
1960	return NULL;	1906	return NULL;
1961	}	1907	}
1962		1908
1963	/*	1909	/*
1964	* present(type, map, x, y) searches for any objects with	1910	* present(type, map, x, y) searches for any objects with
1965	* a matching type variable at the given map and coordinates.	1911	* a matching type variable at the given map and coordinates.
1966	* The first matching object is returned, or NULL if none.	1912	* The first matching object is returned, or NULL if none.
1967	*/	1913	*/
1968		1914	object *
1969	object *present(unsigned char type,mapstruct *m, int x,int y) {	1915	present (unsigned char type, maptile *m, int x, int y)
1970	object *tmp;	1916	{
1971	if(out_of_map(m,x,y)) {	1917	if (out_of_map (m, x, y))
		1918	{
1972	LOG(llevError,"Present called outside map.\n");	1919	LOG (llevError, "Present called outside map.\n");
1973	return NULL;	1920	return NULL;
1974	}	1921	}
1975	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1922
		1923	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1976	if(tmp->type==type)	1924	if (tmp->type == type)
1977	return tmp;	1925	return tmp;
		1926
1978	return NULL;	1927	return NULL;
1979	}	1928	}
1980		1929
1981	/*	1930	/*
1982	* present_in_ob(type, object) searches for any objects with	1931	* present_in_ob(type, object) searches for any objects with
1983	* a matching type variable in the inventory of the given object.	1932	* a matching type variable in the inventory of the given object.
1984	* The first matching object is returned, or NULL if none.	1933	* The first matching object is returned, or NULL if none.
1985	*/	1934	*/
1986		1935	object *
1987	object *present_in_ob(unsigned char type, const object *op) {	1936	present_in_ob (unsigned char type, const object *op)
1988	object *tmp;	1937	{
1989	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1938	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1990	if(tmp->type==type)	1939	if (tmp->type == type)
1991	return tmp;	1940	return tmp;
		1941
1992	return NULL;	1942	return NULL;
1993	}	1943	}
1994		1944
1995	/*	1945	/*
1996	* present_in_ob (type, str, object) searches for any objects with	1946	* present_in_ob (type, str, object) searches for any objects with
…		…
2004	* str is the string to match against. Note that we match against	1954	* str is the string to match against. Note that we match against
2005	* the object name, not the archetype name. this is so that the	1955	* the object name, not the archetype name. this is so that the
2006	* spell code can use one object type (force), but change it's name	1956	* spell code can use one object type (force), but change it's name
2007	* to be unique.	1957	* to be unique.
2008	*/	1958	*/
2009		1959	object *
2010	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1960	present_in_ob_by_name (int type, const char *str, const object *op)
2011	object *tmp;	1961	{
2012
2013	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1962	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2014	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1963	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2015	return tmp;	1964	return tmp;
2016	}	1965
2017	return NULL;	1966	return 0;
2018	}	1967	}
2019		1968
2020	/*	1969	/*
2021	* present_arch_in_ob(archetype, object) searches for any objects with	1970	* present_arch_in_ob(archetype, object) searches for any objects with
2022	* a matching archetype in the inventory of the given object.	1971	* a matching archetype in the inventory of the given object.
2023	* The first matching object is returned, or NULL if none.	1972	* The first matching object is returned, or NULL if none.
2024	*/	1973	*/
2025		1974	object *
2026	object *present_arch_in_ob(const archetype *at, const object *op) {	1975	present_arch_in_ob (const archetype *at, const object *op)
2027	object *tmp;	1976	{
2028	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1977	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2029	if( tmp->arch == at)	1978	if (tmp->arch == at)
2030	return tmp;	1979	return tmp;
		1980
2031	return NULL;	1981	return NULL;
2032	}	1982	}
2033		1983
2034	/*	1984	/*
2035	* activate recursively a flag on an object inventory	1985	* activate recursively a flag on an object inventory
2036	*/	1986	*/
		1987	void
2037	void flag_inv(object*op, int flag){	1988	flag_inv (object *op, int flag)
2038	object *tmp;	1989	{
2039	if(op->inv)	1990	if (op->inv)
2040	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1991	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1992	{
2041	SET_FLAG(tmp, flag);	1993	SET_FLAG (tmp, flag);
2042	flag_inv(tmp,flag);	1994	flag_inv (tmp, flag);
2043	}	1995	}
		1996	}
		1997
2044	}/*	1998	/*
2045	* desactivate recursively a flag on an object inventory	1999	* deactivate recursively a flag on an object inventory
2046	*/	2000	*/
		2001	void
2047	void unflag_inv(object*op, int flag){	2002	unflag_inv (object *op, int flag)
2048	object *tmp;	2003	{
2049	if(op->inv)	2004	if (op->inv)
2050	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	2005	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		2006	{
2051	CLEAR_FLAG(tmp, flag);	2007	CLEAR_FLAG (tmp, flag);
2052	unflag_inv(tmp,flag);	2008	unflag_inv (tmp, flag);
2053	}	2009	}
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	}	2010	}
2067		2011
2068	/*	2012	/*
2069	* find_free_spot(object, map, x, y, start, stop) will search for	2013	* 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	2014	* 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	2028	* 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	2029	* 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	2030	* the archetype because that isn't correct if the monster has been
2087	* customized, changed states, etc.	2031	* customized, changed states, etc.
2088	*/	2032	*/
2089		2033	int
2090	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2034	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2035	{
2091	int i,index=0, flag;	2036	int index = 0, flag;
2092	static int altern[SIZEOFFREE];	2037	int altern[SIZEOFFREE];
2093		2038
2094	for(i=start;i<stop;i++) {	2039	for (int i = start; i < stop; i++)
		2040	{
2095	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2041	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2096	if(!flag)	2042	if (!flag)
2097	altern[index++]=i;	2043	altern [index++] = i;
2098		2044
2099	/* Basically, if we find a wall on a space, we cut down the search size.	2045	/* 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.	2046	* 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 -	2047	* 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	2048	* 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	2049	* spaces in all the other directions, this will reduce the search space
2104	* to only the spaces immediately surrounding the target area, and	2050	* to only the spaces immediately surrounding the target area, and
2105	* won't look 2 spaces south of the target space.	2051	* won't look 2 spaces south of the target space.
2106	*/	2052	*/
2107	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2053	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2108	stop=maxfree[i];	2054	stop = maxfree[i];
2109	}	2055	}
2110	if(!index) return -1;
2111	return altern[RANDOM()%index];
2112	}
2113		2056
		2057	if (!index)
		2058	return -1;
		2059
		2060	return altern [rndm (index)];
		2061	}
		2062
2114	/*	2063	/*
2115	* find_first_free_spot(archetype, mapstruct, x, y) works like	2064	* find_first_free_spot(archetype, maptile, x, y) works like
2116	* find_free_spot(), but it will search max number of squares.	2065	* find_free_spot(), but it will search max number of squares.
2117	* But it will return the first available spot, not a random choice.	2066	* 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.	2067	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2119	*/	2068	*/
2120		2069	int
2121	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2070	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2122	int i;	2071	{
2123	for(i=0;i<SIZEOFFREE;i++) {	2072	for (int i = 0; i < SIZEOFFREE; i++)
2124	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2073	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2125	return i;	2074	return i;
2126	}	2075
2127	return -1;	2076	return -1;
2128	}	2077	}
2129		2078
2130	/*	2079	/*
2131	* The function permute(arr, begin, end) randomly reorders the array	2080	* The function permute(arr, begin, end) randomly reorders the array
2132	* arr[begin..end-1].	2081	* arr[begin..end-1].
		2082	* now uses a fisher-yates shuffle, old permute was broken
2133	*/	2083	*/
		2084	static void
2134	static void permute(int *arr, int begin, int end)	2085	permute (int *arr, int begin, int end)
2135	{	2086	{
2136	int i, j, tmp, len;	2087	arr += begin;
		2088	end -= begin;
2137		2089
2138	len = end-begin;	2090	while (--end)
2139	for(i = begin; i < end; i++)	2091	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	}	2092	}
2148		2093
2149	/* new function to make monster searching more efficient, and effective!	2094	/* new function to make monster searching more efficient, and effective!
2150	* This basically returns a randomized array (in the passed pointer) of	2095	* 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	2096	* 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	2097	* 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	2098	* 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.	2099	* the 3x3 area will be searched, just not in a predictable order.
2155	*/	2100	*/
		2101	void
2156	void get_search_arr(int *search_arr)	2102	get_search_arr (int *search_arr)
2157	{	2103	{
2158	int i;	2104	int i;
2159		2105
2160	for(i = 0; i < SIZEOFFREE; i++)	2106	for (i = 0; i < SIZEOFFREE; i++)
2161	{
2162	search_arr[i] = i;	2107	search_arr[i] = i;
2163	}
2164		2108
2165	permute(search_arr, 1, SIZEOFFREE1+1);	2109	permute (search_arr, 1, SIZEOFFREE1 + 1);
2166	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2110	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2167	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2111	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2168	}	2112	}
2169		2113
2170	/*	2114	/*
2171	* find_dir(map, x, y, exclude) will search some close squares in the	2115	* find_dir(map, x, y, exclude) will search some close squares in the
2172	* given map at the given coordinates for live objects.	2116	* given map at the given coordinates for live objects.
…		…
2177	* Perhaps incorrectly, but I'm making the assumption that exclude	2121	* 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	2122	* 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	2123	* because we have to know what movement the thing looking to move
2180	* there is capable of.	2124	* there is capable of.
2181	*/	2125	*/
2182		2126	int
2183	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2127	find_dir (maptile *m, int x, int y, object *exclude)
		2128	{
2184	int i,max=SIZEOFFREE, mflags;	2129	int i, max = SIZEOFFREE, mflags;
		2130
2185	sint16 nx, ny;	2131	sint16 nx, ny;
2186	object *tmp;	2132	object *tmp;
2187	mapstruct *mp;	2133	maptile *mp;
		2134
2188	MoveType blocked, move_type;	2135	MoveType blocked, move_type;
2189		2136
2190	if (exclude && exclude->head) {	2137	if (exclude && exclude->head)
		2138	{
2191	exclude = exclude->head;	2139	exclude = exclude->head;
2192	move_type = exclude->move_type;	2140	move_type = exclude->move_type;
2193	} else {	2141	}
		2142	else
		2143	{
2194	/* If we don't have anything, presume it can use all movement types. */	2144	/* If we don't have anything, presume it can use all movement types. */
2195	move_type=MOVE_ALL;	2145	move_type = MOVE_ALL;
		2146	}
		2147
		2148	for (i = 1; i < max; i++)
2196	}	2149	{
2197
2198	for(i=1;i<max;i++) {
2199	mp = m;	2150	mp = m;
2200	nx = x + freearr_x[i];	2151	nx = x + freearr_x[i];
2201	ny = y + freearr_y[i];	2152	ny = y + freearr_y[i];
2202		2153
2203	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2154	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2155
2204	if (mflags & P_OUT_OF_MAP) {	2156	if (mflags & P_OUT_OF_MAP)
		2157	max = maxfree[i];
		2158	else
		2159	{
		2160	mapspace &ms = mp->at (nx, ny);
		2161
		2162	blocked = ms.move_block;
		2163
		2164	if ((move_type & blocked) == move_type)
2205	max = maxfree[i];	2165	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) {	2166	else if (mflags & P_IS_ALIVE)
2212	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2167	{
		2168	for (tmp = ms.bot; tmp; tmp = tmp->above)
2213	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2169	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2214	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2170	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2215	break;	2171	break;
2216	}	2172
2217	}
2218	if(tmp) {	2173	if (tmp)
2219	return freedir[i];	2174	return freedir[i];
2220	}
2221	}	2175	}
2222	}	2176	}
2223	}	2177	}
		2178
2224	return 0;	2179	return 0;
2225	}	2180	}
2226		2181
2227	/*	2182	/*
2228	* distance(object 1, object 2) will return the square of the	2183	* distance(object 1, object 2) will return the square of the
2229	* distance between the two given objects.	2184	* distance between the two given objects.
2230	*/	2185	*/
2231		2186	int
2232	int distance(const object *ob1, const object *ob2) {	2187	distance (const object *ob1, const object *ob2)
2233	int i;	2188	{
2234	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2189	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	}	2190	}
2238		2191
2239	/*	2192	/*
2240	* find_dir_2(delta-x,delta-y) will return a direction in which	2193	* 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	2194	* an object which has subtracted the x and y coordinates of another
2242	* object, needs to travel toward it.	2195	* object, needs to travel toward it.
2243	*/	2196	*/
2244		2197	int
2245	int find_dir_2(int x, int y) {	2198	find_dir_2 (int x, int y)
		2199	{
2246	int q;	2200	int q;
2247		2201
2248	if(y)	2202	if (y)
2249	q=x*100/y;	2203	q = x * 100 / y;
2250	else if (x)	2204	else if (x)
2251	q= -300*x;	2205	q = -300 * x;
2252	else	2206	else
2253	return 0;	2207	return 0;
2254		2208
2255	if(y>0) {	2209	if (y > 0)
		2210	{
2256	if(q < -242)	2211	if (q < -242)
2257	return 3 ;	2212	return 3;
2258	if (q < -41)	2213	if (q < -41)
2259	return 2 ;	2214	return 2;
2260	if (q < 41)	2215	if (q < 41)
2261	return 1 ;	2216	return 1;
2262	if (q < 242)	2217	if (q < 242)
2263	return 8 ;	2218	return 8;
2264	return 7 ;	2219	return 7;
2265	}	2220	}
2266		2221
2267	if (q < -242)	2222	if (q < -242)
2268	return 7 ;	2223	return 7;
2269	if (q < -41)	2224	if (q < -41)
2270	return 6 ;	2225	return 6;
2271	if (q < 41)	2226	if (q < 41)
2272	return 5 ;	2227	return 5;
2273	if (q < 242)	2228	if (q < 242)
2274	return 4 ;	2229	return 4;
2275		2230
2276	return 3 ;	2231	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	}	2232	}
2290		2233
2291	/*	2234	/*
2292	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2235	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2293	* between two directions (which are expected to be absolute (see absdir())	2236	* between two directions (which are expected to be absolute (see absdir())
2294	*/	2237	*/
2295		2238	int
2296	int dirdiff(int dir1, int dir2) {	2239	dirdiff (int dir1, int dir2)
		2240	{
2297	int d;	2241	int d;
		2242
2298	d = abs(dir1 - dir2);	2243	d = abs (dir1 - dir2);
2299	if(d>4)	2244	if (d > 4)
2300	d = 8 - d;	2245	d = 8 - d;
		2246
2301	return d;	2247	return d;
2302	}	2248	}
2303		2249
2304	/* peterm:	2250	/* peterm:
2305	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2251	* 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	2254	* 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.	2255	* 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	2256	* Moved from spell_util.c to object.c with the other related direction
2311	* functions.	2257	* functions.
2312	*/	2258	*/
2313
2314	int reduction_dir[SIZEOFFREE][3] = {	2259	int reduction_dir[SIZEOFFREE][3] = {
2315	{0,0,0}, /* 0 */	2260	{0, 0, 0}, /* 0 */
2316	{0,0,0}, /* 1 */	2261	{0, 0, 0}, /* 1 */
2317	{0,0,0}, /* 2 */	2262	{0, 0, 0}, /* 2 */
2318	{0,0,0}, /* 3 */	2263	{0, 0, 0}, /* 3 */
2319	{0,0,0}, /* 4 */	2264	{0, 0, 0}, /* 4 */
2320	{0,0,0}, /* 5 */	2265	{0, 0, 0}, /* 5 */
2321	{0,0,0}, /* 6 */	2266	{0, 0, 0}, /* 6 */
2322	{0,0,0}, /* 7 */	2267	{0, 0, 0}, /* 7 */
2323	{0,0,0}, /* 8 */	2268	{0, 0, 0}, /* 8 */
2324	{8,1,2}, /* 9 */	2269	{8, 1, 2}, /* 9 */
2325	{1,2,-1}, /* 10 */	2270	{1, 2, -1}, /* 10 */
2326	{2,10,12}, /* 11 */	2271	{2, 10, 12}, /* 11 */
2327	{2,3,-1}, /* 12 */	2272	{2, 3, -1}, /* 12 */
2328	{2,3,4}, /* 13 */	2273	{2, 3, 4}, /* 13 */
2329	{3,4,-1}, /* 14 */	2274	{3, 4, -1}, /* 14 */
2330	{4,14,16}, /* 15 */	2275	{4, 14, 16}, /* 15 */
2331	{5,4,-1}, /* 16 */	2276	{5, 4, -1}, /* 16 */
2332	{4,5,6}, /* 17 */	2277	{4, 5, 6}, /* 17 */
2333	{6,5,-1}, /* 18 */	2278	{6, 5, -1}, /* 18 */
2334	{6,20,18}, /* 19 */	2279	{6, 20, 18}, /* 19 */
2335	{7,6,-1}, /* 20 */	2280	{7, 6, -1}, /* 20 */
2336	{6,7,8}, /* 21 */	2281	{6, 7, 8}, /* 21 */
2337	{7,8,-1}, /* 22 */	2282	{7, 8, -1}, /* 22 */
2338	{8,22,24}, /* 23 */	2283	{8, 22, 24}, /* 23 */
2339	{8,1,-1}, /* 24 */	2284	{8, 1, -1}, /* 24 */
2340	{24,9,10}, /* 25 */	2285	{24, 9, 10}, /* 25 */
2341	{9,10,-1}, /* 26 */	2286	{9, 10, -1}, /* 26 */
2342	{10,11,-1}, /* 27 */	2287	{10, 11, -1}, /* 27 */
2343	{27,11,29}, /* 28 */	2288	{27, 11, 29}, /* 28 */
2344	{11,12,-1}, /* 29 */	2289	{11, 12, -1}, /* 29 */
2345	{12,13,-1}, /* 30 */	2290	{12, 13, -1}, /* 30 */
2346	{12,13,14}, /* 31 */	2291	{12, 13, 14}, /* 31 */
2347	{13,14,-1}, /* 32 */	2292	{13, 14, -1}, /* 32 */
2348	{14,15,-1}, /* 33 */	2293	{14, 15, -1}, /* 33 */
2349	{33,15,35}, /* 34 */	2294	{33, 15, 35}, /* 34 */
2350	{16,15,-1}, /* 35 */	2295	{16, 15, -1}, /* 35 */
2351	{17,16,-1}, /* 36 */	2296	{17, 16, -1}, /* 36 */
2352	{18,17,16}, /* 37 */	2297	{18, 17, 16}, /* 37 */
2353	{18,17,-1}, /* 38 */	2298	{18, 17, -1}, /* 38 */
2354	{18,19,-1}, /* 39 */	2299	{18, 19, -1}, /* 39 */
2355	{41,19,39}, /* 40 */	2300	{41, 19, 39}, /* 40 */
2356	{19,20,-1}, /* 41 */	2301	{19, 20, -1}, /* 41 */
2357	{20,21,-1}, /* 42 */	2302	{20, 21, -1}, /* 42 */
2358	{20,21,22}, /* 43 */	2303	{20, 21, 22}, /* 43 */
2359	{21,22,-1}, /* 44 */	2304	{21, 22, -1}, /* 44 */
2360	{23,22,-1}, /* 45 */	2305	{23, 22, -1}, /* 45 */
2361	{45,47,23}, /* 46 */	2306	{45, 47, 23}, /* 46 */
2362	{23,24,-1}, /* 47 */	2307	{23, 24, -1}, /* 47 */
2363	{24,9,-1}}; /* 48 */	2308	{24, 9, -1}
		2309	}; /* 48 */
2364		2310
2365	/* Recursive routine to step back and see if we can	2311	/* Recursive routine to step back and see if we can
2366	* find a path to that monster that we found. If not,	2312	* find a path to that monster that we found. If not,
2367	* we don't bother going toward it. Returns 1 if we	2313	* we don't bother going toward it. Returns 1 if we
2368	* can see a direct way to get it	2314	* can see a direct way to get it
2369	* Modified to be map tile aware -.MSW	2315	* Modified to be map tile aware -.MSW
2370	*/	2316	*/
2371		2317	int
2372
2373	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2318	can_see_monsterP (maptile *m, int x, int y, int dir)
		2319	{
2374	sint16 dx, dy;	2320	sint16 dx, dy;
2375	int mflags;	2321	int mflags;
2376		2322
		2323	if (dir < 0)
2377	if(dir<0) return 0; /* exit condition: invalid direction */	2324	return 0; /* exit condition: invalid direction */
2378		2325
2379	dx = x + freearr_x[dir];	2326	dx = x + freearr_x[dir];
2380	dy = y + freearr_y[dir];	2327	dy = y + freearr_y[dir];
2381		2328
2382	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2329	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2383		2330
2384	/* This functional arguably was incorrect before - it was	2331	/* This functional arguably was incorrect before - it was
2385	* checking for P_WALL - that was basically seeing if	2332	* checking for P_WALL - that was basically seeing if
2386	* we could move to the monster - this is being more	2333	* we could move to the monster - this is being more
2387	* literal on if we can see it. To know if we can actually	2334	* 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	2335	* move to the monster, we'd need the monster passed in or
2389	* at least its move type.	2336	* at least its move type.
2390	*/	2337	*/
2391	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2338	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2339	return 0;
2392		2340
2393	/* yes, can see. */	2341	/* yes, can see. */
2394	if(dir < 9) return 1;	2342	if (dir < 9)
		2343	return 1;
		2344
2395	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2345	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2396	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2346	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2397	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2347	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2398	}	2348	}
2399		2349
2400
2401
2402	/*	2350	/*
2403	* can_pick(picker, item): finds out if an object is possible to be	2351	* 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	2352	* picked up by the picker. Returnes 1 if it can be
2405	* picked up, otherwise 0.	2353	* picked up, otherwise 0.
2406	*	2354	*
…		…
2408	* core dumps if they do.	2356	* core dumps if they do.
2409	*	2357	*
2410	* Add a check so we can't pick up invisible objects (0.93.8)	2358	* Add a check so we can't pick up invisible objects (0.93.8)
2411	*/	2359	*/
2412		2360
		2361	int
2413	int can_pick(const object *who, const object *item) {	2362	can_pick (const object *who, const object *item)
		2363	{
2414	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2364	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2415	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2365	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2416	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2366	!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	}	2367	}
2419
2420		2368
2421	/*	2369	/*
2422	* create clone from object to another	2370	* create clone from object to another
2423	*/	2371	*/
		2372	object *
2424	object *object_create_clone (object *asrc) {	2373	object_create_clone (object *asrc)
		2374	{
2425	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2375	object *dst = 0, *tmp, *src, *part, *prev, *item;
2426		2376
2427	if(!asrc) return NULL;	2377	if (!asrc)
		2378	return 0;
		2379
2428	src = asrc;	2380	src = asrc;
2429	if(src->head)	2381	if (src->head)
2430	src = src->head;	2382	src = src->head;
2431		2383
2432	prev = NULL;	2384	prev = 0;
2433	for(part = src; part; part = part->more) {	2385	for (part = src; part; part = part->more)
2434	tmp = get_object();	2386	{
2435	copy_object(part,tmp);	2387	tmp = part->clone ();
2436	tmp->x -= src->x;	2388	tmp->x -= src->x;
2437	tmp->y -= src->y;	2389	tmp->y -= src->y;
		2390
2438	if(!part->head) {	2391	if (!part->head)
		2392	{
2439	dst = tmp;	2393	dst = tmp;
2440	tmp->head = NULL;
2441	} else {
2442	tmp->head = dst;	2394	tmp->head = 0;
2443	}	2395	}
		2396	else
		2397	tmp->head = dst;
		2398
2444	tmp->more = NULL;	2399	tmp->more = 0;
		2400
2445	if(prev)	2401	if (prev)
2446	prev->more = tmp;	2402	prev->more = tmp;
		2403
2447	prev = tmp;	2404	prev = tmp;
2448	}	2405	}
2449	/*** copy inventory ***/	2406
2450	for(item = src->inv; item; item = item->below) {	2407	for (item = src->inv; item; item = item->below)
2451	(void) insert_ob_in_ob(object_create_clone(item),dst);	2408	insert_ob_in_ob (object_create_clone (item), dst);
2452	}
2453		2409
2454	return dst;	2410	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	}	2411	}
2499		2412
2500	/* This returns the first object in who's inventory that	2413	/* This returns the first object in who's inventory that
2501	* has the same type and subtype match.	2414	* has the same type and subtype match.
2502	* returns NULL if no match.	2415	* returns NULL if no match.
2503	*/	2416	*/
		2417	object *
2504	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2418	find_obj_by_type_subtype (const object *who, int type, int subtype)
2505	{	2419	{
2506	object *tmp;
2507
2508	for (tmp=who->inv; tmp; tmp=tmp->below)	2420	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2509	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2421	if (tmp->type == type && tmp->subtype == subtype)
		2422	return tmp;
2510		2423
2511	return NULL;	2424	return 0;
2512	}	2425	}
2513		2426
2514	/* If ob has a field named key, return the link from the list,	2427	/* If ob has a field named key, return the link from the list,
2515	* otherwise return NULL.	2428	* otherwise return NULL.
2516	*	2429	*
2517	* key must be a passed in shared string - otherwise, this won't	2430	* key must be a passed in shared string - otherwise, this won't
2518	* do the desired thing.	2431	* do the desired thing.
2519	*/	2432	*/
		2433	key_value *
2520	key_value * get_ob_key_link(const object * ob, const char * key) {	2434	get_ob_key_link (const object *ob, const char *key)
2521	key_value * link;	2435	{
2522
2523	for (link = ob->key_values; link != NULL; link = link->next) {	2436	for (key_value *link = ob->key_values; link; link = link->next)
2524	if (link->key == key) {	2437	if (link->key == key)
2525	return link;	2438	return link;
2526	}	2439
2527	}	2440	return 0;
2528		2441	}
2529	return NULL;
2530	}
2531		2442
2532	/*	2443	/*
2533	* Returns the value of op has an extra_field for key, or NULL.	2444	* Returns the value of op has an extra_field for key, or NULL.
2534	*	2445	*
2535	* The argument doesn't need to be a shared string.	2446	* The argument doesn't need to be a shared string.
2536	*	2447	*
2537	* The returned string is shared.	2448	* The returned string is shared.
2538	*/	2449	*/
		2450	const char *
2539	const char * get_ob_key_value(const object * op, const char * const key) {	2451	get_ob_key_value (const object *op, const char *const key)
		2452	{
2540	key_value * link;	2453	key_value *link;
2541	const char * canonical_key;	2454	shstr_cmp canonical_key (key);
		2455
		2456	if (!canonical_key)
2542		2457	{
2543	canonical_key = shstr::find (key);
2544
2545	if (canonical_key == NULL) {
2546	/* 1. There being a field named key on any object	2458	/* 1. There being a field named key on any object
2547	* implies there'd be a shared string to find.	2459	* implies there'd be a shared string to find.
2548	* 2. Since there isn't, no object has this field.	2460	* 2. Since there isn't, no object has this field.
2549	* 3. Therefore, *this* object doesn't have this field.	2461	* 3. Therefore, *this* object doesn't have this field.
2550	*/	2462	*/
2551	return NULL;	2463	return 0;
2552	}	2464	}
2553		2465
2554	/* This is copied from get_ob_key_link() above -	2466	/* This is copied from get_ob_key_link() above -
2555	* only 4 lines, and saves the function call overhead.	2467	* only 4 lines, and saves the function call overhead.
2556	*/	2468	*/
2557	for (link = op->key_values; link != NULL; link = link->next) {	2469	for (link = op->key_values; link; link = link->next)
2558	if (link->key == canonical_key) {	2470	if (link->key == canonical_key)
2559	return link->value;	2471	return link->value;
2560	}
2561	}
2562	return NULL;
2563	}
2564		2472
		2473	return 0;
		2474	}
2565		2475
2566	/*	2476	/*
2567	* Updates the canonical_key in op to value.	2477	* Updates the canonical_key in op to value.
2568	*	2478	*
2569	* canonical_key is a shared string (value doesn't have to be).	2479	* 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	2481	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2572	* keys.	2482	* keys.
2573	*	2483	*
2574	* Returns TRUE on success.	2484	* Returns TRUE on success.
2575	*/	2485	*/
		2486	int
2576	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2487	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2488	{
2577	key_value * field = NULL, *last=NULL;	2489	key_value *field = NULL, *last = NULL;
2578		2490
2579	for (field=op->key_values; field != NULL; field=field->next) {	2491	for (field = op->key_values; field != NULL; field = field->next)
		2492	{
2580	if (field->key != canonical_key) {	2493	if (field->key != canonical_key)
		2494	{
2581	last = field;	2495	last = field;
2582	continue;	2496	continue;
2583	}	2497	}
2584		2498
2585	if (value)	2499	if (value)
2586	field->value = value;	2500	field->value = value;
2587	else {	2501	else
		2502	{
2588	/* Basically, if the archetype has this key set,	2503	/* Basically, if the archetype has this key set,
2589	* we need to store the null value so when we save	2504	* we need to store the null value so when we save
2590	* it, we save the empty value so that when we load,	2505	* it, we save the empty value so that when we load,
2591	* we get this value back again.	2506	* we get this value back again.
2592	*/	2507	*/
2593	if (get_ob_key_link (&op->arch->clone, canonical_key))	2508	if (get_ob_key_link (&op->arch->clone, canonical_key))
2594	field->value = 0;	2509	field->value = 0;
		2510	else
		2511	{
		2512	if (last)
		2513	last->next = field->next;
2595	else	2514	else
2596	{
2597	if (last) last->next = field->next;
2598	else op->key_values = field->next;	2515	op->key_values = field->next;
2599		2516
2600	delete field;	2517	delete field;
2601	}	2518	}
2602	}	2519	}
2603	return TRUE;	2520	return TRUE;
2604	}	2521	}
2605	/* IF we get here, key doesn't exist */	2522	/* IF we get here, key doesn't exist */
2606		2523
2607	/* No field, we'll have to add it. */	2524	/* No field, we'll have to add it. */
2608		2525
2609	if (!add_key) {	2526	if (!add_key)
2610	return FALSE;	2527	return FALSE;
2611	}	2528
2612	/* There isn't any good reason to store a null	2529	/* There isn't any good reason to store a null
2613	* value in the key/value list. If the archetype has	2530	* value in the key/value list. If the archetype has
2614	* this key, then we should also have it, so shouldn't	2531	* this key, then we should also have it, so shouldn't
2615	* be here. If user wants to store empty strings,	2532	* be here. If user wants to store empty strings,
2616	* should pass in ""	2533	* should pass in ""
2617	*/	2534	*/
2618	if (value == NULL) return TRUE;	2535	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;	2536	return TRUE;
		2537
		2538	field = new key_value;
		2539
		2540	field->key = canonical_key;
		2541	field->value = value;
		2542	/* Usual prepend-addition. */
		2543	field->next = op->key_values;
		2544	op->key_values = field;
		2545
		2546	return TRUE;
2629	}	2547	}
2630		2548
2631	/*	2549	/*
2632	* Updates the key in op to value.	2550	* Updates the key in op to value.
2633	*	2551	*
…		…
2635	* and not add new ones.	2553	* and not add new ones.
2636	* In general, should be little reason FALSE is ever passed in for add_key	2554	* In general, should be little reason FALSE is ever passed in for add_key
2637	*	2555	*
2638	* Returns TRUE on success.	2556	* Returns TRUE on success.
2639	*/	2557	*/
		2558	int
2640	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2559	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2641	{	2560	{
2642	shstr key_ (key);	2561	shstr key_ (key);
		2562
2643	return set_ob_key_value_s (op, key_, value, add_key);	2563	return set_ob_key_value_s (op, key_, value, add_key);
2644	}	2564	}
		2565
		2566	object::depth_iterator::depth_iterator (object *container)
		2567	: iterator_base (container)
		2568	{
		2569	while (item->inv)
		2570	item = item->inv;
		2571	}
		2572
		2573	void
		2574	object::depth_iterator::next ()
		2575	{
		2576	if (item->below)
		2577	{
		2578	item = item->below;
		2579
		2580	while (item->inv)
		2581	item = item->inv;
		2582	}
		2583	else
		2584	item = item->env;
		2585	}
		2586
		2587
		2588	const char *
		2589	object::flag_desc (char *desc, int len) const
		2590	{
		2591	char *p = desc;
		2592	bool first = true;
		2593
		2594	*p = 0;
		2595
		2596	for (int i = 0; i < NUM_FLAGS; i++)
		2597	{
		2598	if (len <= 10) // magic constant!
		2599	{
		2600	snprintf (p, len, ",...");
		2601	break;
		2602	}
		2603
		2604	if (flag [i])
		2605	{
		2606	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2607	len -= cnt;
		2608	p += cnt;
		2609	first = false;
		2610	}
		2611	}
		2612
		2613	return desc;
		2614	}
		2615
		2616	// return a suitable string describing an object in enough detail to find it
		2617	const char *
		2618	object::debug_desc (char *info) const
		2619	{
		2620	char flagdesc[512];
		2621	char info2[256 * 4];
		2622	char *p = info;
		2623
		2624	p += snprintf (p, 512, "{cnt:%d,uuid:<1.%" PRIx64 ">,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2625	count, uuid.seq,
		2626	&name,
		2627	title ? "\",title:\"" : "",
		2628	title ? (const char *)title : "",
		2629	flag_desc (flagdesc, 512), type);
		2630
		2631	if (env)
		2632	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2633
		2634	if (map)
		2635	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2636
		2637	return info;
		2638	}
		2639
		2640	const char *
		2641	object::debug_desc () const
		2642	{
		2643	static char info[3][256 * 4];
		2644	static int info_idx;
		2645
		2646	return debug_desc (info [++info_idx % 3]);
		2647	}
		2648
		2649	struct region *
		2650	object::region () const
		2651	{
		2652	return map ? map->region (x, y)
		2653	: region::default_region ();
		2654	}
		2655
		2656	const materialtype_t *
		2657	object::dominant_material () const
		2658	{
		2659	if (materialtype_t *mat = name_to_material (materialname))
		2660	return mat;
		2661
		2662	// omfg this is slow, this has to be temporary :)
		2663	shstr unknown ("unknown");
		2664
		2665	return name_to_material (unknown);
		2666	}
		2667
		2668	void
		2669	object::open_container (object *new_container)
		2670	{
		2671	if (container == new_container)
		2672	return;
		2673
		2674	if (object *old_container = container)
		2675	{
		2676	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2677	return;
		2678
		2679	#if 0
		2680	// remove the "Close old_container" object.
		2681	if (object *closer = old_container->inv)
		2682	if (closer->type == CLOSE_CON)
		2683	closer->destroy ();
		2684	#endif
		2685
		2686	old_container->flag [FLAG_APPLIED] = 0;
		2687	container = 0;
		2688
		2689	esrv_update_item (UPD_FLAGS, this, old_container);
		2690	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
		2691	}
		2692
		2693	if (new_container)
		2694	{
		2695	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2696	return;
		2697
		2698	// TODO: this does not seem to serve any purpose anymore?
		2699	#if 0
		2700	// insert the "Close Container" object.
		2701	if (archetype *closer = new_container->other_arch)
		2702	{
		2703	object *closer = arch_to_object (new_container->other_arch);
		2704	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2705	new_container->insert (closer);
		2706	}
		2707	#endif
		2708
		2709	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2710
		2711	new_container->flag [FLAG_APPLIED] = 1;
		2712	container = new_container;
		2713
		2714	esrv_update_item (UPD_FLAGS, this, new_container);
		2715	esrv_send_inventory (this, new_container);
		2716	}
		2717	}
		2718
		2719

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