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Comparing deliantra/server/common/object.C (file contents):
Revision 1.12 by elmex, Sun Sep 3 14:33:47 2006 UTC vs.
Revision 1.84 by root, Mon Dec 25 14:54:44 2006 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.12 2006/09/03 14:33:47 elmex Exp $";
4	*/
5
6	/*	1	/*
7	CrossFire, A Multiplayer game for X-windows	2	CrossFire, A Multiplayer game for X-windows
8		3
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	4	Copyright (C) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	5	Copyright (C) 1992 Frank Tore Johansen
…		…
21		16
22	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	18	along with this program; if not, write to the Free Software
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25		20
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	21	The authors can be reached via e-mail at <crossfire@schmorp.de>
27	*/	22	*/
28		23
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.	24	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying	25	sub/add_weight will transcend the environment updating the carrying
31	variable. */	26	variable. */
32	#include <global.h>	27	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	28	#include <stdio.h>
35	#include <sys/types.h>	29	#include <sys/types.h>
36	#include <sys/uio.h>	30	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	31	#include <object.h>
39	#include <funcpoint.h>	32	#include <funcpoint.h>
40	#include <skills.h>
41	#include <loader.h>	33	#include <loader.h>
42	#ifdef MEMORY_DEBUG	34
43	int nroffreeobjects = 0;	35	#include <bitset>
		36
44	int nrofallocobjects = 0;	37	int nrofallocobjects = 0;
45	#undef OBJ_EXPAND	38	static UUID uuid;
46	#define OBJ_EXPAND 1	39	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		40
53	object *objects; /* Pointer to the list of used objects */
54	object *free_objects; /* Pointer to the list of unused objects */
55	object *active_objects; /* List of active objects that need to be processed */	41	object *active_objects; /* List of active objects that need to be processed */
56		42
57	short freearr_x[SIZEOFFREE]=	43	short freearr_x[SIZEOFFREE] = { 0, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
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};	44	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
60	short freearr_y[SIZEOFFREE]=	45	};
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,	46	short freearr_y[SIZEOFFREE] = { 0, -1, -1, 0, 1, 1, 1, 0, -1, -2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
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};	47	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
63	int maxfree[SIZEOFFREE]=	48	};
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,	49	int maxfree[SIZEOFFREE] = { 0, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45,
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};	50	48, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		51	};
66	int freedir[SIZEOFFREE]= {	52	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,	53	0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
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};	54	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		55	};
69		56
		57	static void
		58	write_uuid (void)
		59	{
		60	char filename1[MAX_BUF], filename2[MAX_BUF];
		61
		62	sprintf (filename1, "%s/uuid", settings.localdir);
		63	sprintf (filename2, "%s/uuid~", settings.localdir);
		64
		65	FILE *fp;
		66
		67	if (!(fp = fopen (filename2, "w")))
		68	{
		69	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
		70	return;
		71	}
		72
		73	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
		74	fclose (fp);
		75	rename (filename2, filename1);
		76	}
		77
		78	static void
		79	read_uuid (void)
		80	{
		81	char filename[MAX_BUF];
		82
		83	sprintf (filename, "%s/uuid", settings.localdir);
		84
		85	FILE *fp;
		86
		87	if (!(fp = fopen (filename, "r")))
		88	{
		89	if (errno == ENOENT)
		90	{
		91	LOG (llevInfo, "RESET uid to 1\n");
		92	uuid.seq = 0;
		93	write_uuid ();
		94	return;
		95	}
		96
		97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		98	_exit (1);
		99	}
		100
		101	int version;
		102	unsigned long long uid;
		103	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)
		104	{
		105	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);
		106	_exit (1);
		107	}
		108
		109	uuid.seq = uid;
		110	write_uuid ();
		111	LOG (llevDebug, "read UID: %" PRId64 "\n", uid);
		112	fclose (fp);
		113	}
		114
		115	UUID
		116	gen_uuid ()
		117	{
		118	UUID uid;
		119
		120	uid.seq = ++uuid.seq;
		121
		122	if (!(uuid.seq & (UUID_SKIP - 1)))
		123	write_uuid ();
		124
		125	return uid;
		126	}
		127
		128	void
		129	init_uuid ()
		130	{
		131	read_uuid ();
		132	}
70		133
71	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	134	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		135	static int
72	static int compare_ob_value_lists_one(const object * wants, const object * has) {	136	compare_ob_value_lists_one (const object *wants, const object *has)
		137	{
73	key_value * wants_field;	138	key_value *wants_field;
74		139
75	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	140	/* 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	141	* objects with lists are rare, and lists stay short. If not, use a
77	* different structure or at least keep the lists sorted...	142	* different structure or at least keep the lists sorted...
78	*/	143	*/
79		144
80	/* For each field in wants, */	145	/* For each field in wants, */
81	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	146	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next)
		147	{
82	key_value * has_field;	148	key_value *has_field;
83		149
84	/* Look for a field in has with the same key. */	150	/* Look for a field in has with the same key. */
85	has_field = get_ob_key_link(has, wants_field->key);	151	has_field = get_ob_key_link (has, wants_field->key);
		152
		153	if (has_field == NULL)
86		154	{
87	if (has_field == NULL) {
88	/* No field with that name. */	155	/* No field with that name. */
89	return FALSE;	156	return FALSE;
90	}	157	}
91		158
92	/* Found the matching field. */	159	/* Found the matching field. */
93	if (has_field->value != wants_field->value) {	160	if (has_field->value != wants_field->value)
		161	{
94	/* Values don't match, so this half of the comparison is false. */	162	/* Values don't match, so this half of the comparison is false. */
95	return FALSE;	163	return FALSE;
96	}	164	}
97		165
98	/* If we get here, we found a match. Now for the next field in wants. */	166	/* If we get here, we found a match. Now for the next field in wants. */
99	}
100		167	}
		168
101	/* If we get here, every field in wants has a matching field in has. */	169	/* If we get here, every field in wants has a matching field in has. */
102	return TRUE;	170	return TRUE;
103	}	171	}
104		172
105	/* Returns TRUE if ob1 has the same key_values as ob2. */	173	/* Returns TRUE if ob1 has the same key_values as ob2. */
		174	static int
106	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	175	compare_ob_value_lists (const object *ob1, const object *ob2)
		176	{
107	/* However, there may be fields in has which aren't partnered in wants,	177	/* However, there may be fields in has which aren't partnered in wants,
108	* so we need to run the comparison *twice*. :(	178	* so we need to run the comparison *twice*. :(
109	*/	179	*/
110	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	180	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
111	}	181	}
112		182
113	/* Function examines the 2 objects given to it, and returns true if	183	/* Function examines the 2 objects given to it, and returns true if
114	* they can be merged together.	184	* they can be merged together.
115	*	185	*
116	* Note that this function appears a lot longer than the macro it	186	* Note that this function appears a lot longer than the macro it
117	* replaces - this is mostly for clarity - a decent compiler should hopefully	187	* replaces - this is mostly for clarity - a decent compiler should hopefully
118	* reduce this to the same efficiency.	188	* reduce this to the same efficiency.
119	*	189	*
120	* Check nrof variable *before* calling CAN_MERGE()	190	* Check nrof variable *before* calling can_merge()
121	*	191	*
122	* Improvements made with merge: Better checking on potion, and also	192	* Improvements made with merge: Better checking on potion, and also
123	* check weight	193	* check weight
124	*/	194	*/
125		195
126	int CAN_MERGE(object *ob1, object *ob2) {	196	bool object::can_merge_slow (object *ob1, object *ob2)
127		197	{
128	/* A couple quicksanity checks */	198	/* A couple quicksanity checks */
129	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	199	if (ob1 == ob2
		200	|| ob1->type != ob2->type
		201	|| ob1->speed != ob2->speed
		202	|| ob1->value != ob2->value
		203	|| ob1->name != ob2->name)
		204	return 0;
130		205
131	if (ob1->speed != ob2->speed) return 0;	206	//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	207	/* 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	208	* value could not be stored in a sint32 (which unfortunately sometimes is
134	* check?	209	* used to store nrof).
135	*/	210	*/
136	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	211	if (ob1->nrof + ob2->nrof >= 1UL << 31)
		212	return 0;
		213
		214	/* If the objects have been identified, set the BEEN_APPLIED flag.
		215	* This is to the comparison of the flags below will be OK. We
		216	* just can't ignore the been applied or identified flags, as they
		217	* are not equal - just if it has been identified, the been_applied
		218	* flags lose any meaning.
		219	*/
		220	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		221	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		222
		223	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		224	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		225
		226	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
		227	|| ob1->arch != ob2->arch
		228	|| ob1->name != ob2->name
		229	|| ob1->title != ob2->title
		230	|| ob1->msg != ob2->msg
		231	|| ob1->weight != ob2->weight
		232	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		233	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
		234	|| ob1->attacktype != ob2->attacktype
		235	|| ob1->magic != ob2->magic
		236	|| ob1->slaying != ob2->slaying
		237	|| ob1->skill != ob2->skill
		238	|| ob1->value != ob2->value
		239	|| ob1->animation_id != ob2->animation_id
		240	|| ob1->client_type != ob2->client_type
		241	|| ob1->materialname != ob2->materialname
		242	|| ob1->lore != ob2->lore
		243	|| ob1->subtype != ob2->subtype
		244	|| ob1->move_type != ob2->move_type
		245	|| ob1->move_block != ob2->move_block
		246	|| ob1->move_allow != ob2->move_allow
		247	|| ob1->move_on != ob2->move_on
		248	|| ob1->move_off != ob2->move_off
		249	|| ob1->move_slow != ob2->move_slow
		250	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
		251	return 0;
		252
		253	/* This is really a spellbook check - really, we should
		254	* check all objects in the inventory.
		255	*/
		256	if (ob1->inv || ob2->inv)
		257	{
		258	/* if one object has inventory but the other doesn't, not equiv */
		259	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
137	return 0;	260	return 0;
138		261
139	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	262	/* Now check to see if the two inventory objects could merge */
140	* value could not be stored in a sint32 (which unfortunately sometimes is	263	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;	264	return 0;
145		265
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	266	/* inventory ok - still need to check rest of this object to see
157	* if it is valid.	267	* if it is valid.
158	*/	268	*/
159	}	269	}
160		270
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,	271	/* 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	272	* 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.	273	* some items equipped, and we don't want those to merge.
212	*/	274	*/
213	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))	275	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		276	return 0;
		277
		278	/* Note sure why the following is the case - either the object has to
		279	* be animated or have a very low speed. Is this an attempted monster
		280	* check?
		281	*/
		282	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
		283	return 0;
		284
		285	switch (ob1->type)
		286	{
		287	case SCROLL:
		288	if (ob1->level != ob2->level)
		289	return 0;
		290	break;
		291	}
		292
		293	if (ob1->key_values != NULL || ob2->key_values != NULL)
		294	{
		295	/* At least one of these has key_values. */
		296	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
		297	/* One has fields, but the other one doesn't. */
214	return 0;	298	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)) {	299	else if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	300	return 0;
229	}	301	}
		302
		303	//TODO: generate an event or call into perl for additional checks
		304	if (ob1->self || ob2->self)
230	}	305	{
		306	ob1->optimise ();
		307	ob2->optimise ();
231		308
		309	if (ob1->self || ob2->self)
		310	return 0;
		311	}
		312
232	/* Everything passes, must be OK. */	313	/* Everything passes, must be OK. */
233	return 1;	314	return 1;
234	}	315	}
235		316
236	/*	317	/*
237	* sum_weight() is a recursive function which calculates the weight	318	* sum_weight() is a recursive function which calculates the weight
238	* an object is carrying. It goes through in figures out how much	319	* an object is carrying. It goes through in figures out how much
239	* containers are carrying, and sums it up.	320	* containers are carrying, and sums it up.
240	*/	321	*/
241	signed long sum_weight(object *op) {	322	long
		323	sum_weight (object *op)
		324	{
242	signed long sum;	325	long sum;
243	object *inv;	326	object *inv;
		327
244	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	328	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		329	{
245	if (inv->inv)	330	if (inv->inv)
246	sum_weight(inv);	331	sum_weight (inv);
247	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	332	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
248	}	333	}
		334
249	if (op->type == CONTAINER && op->stats.Str)	335	if (op->type == CONTAINER && op->stats.Str)
250	sum = (sum * (100 - op->stats.Str))/100;	336	sum = (sum * (100 - op->stats.Str)) / 100;
		337
251	if(op->carrying != sum)	338	if (op->carrying != sum)
252	op->carrying = sum;	339	op->carrying = sum;
		340
253	return sum;	341	return sum;
254	}	342	}
255		343
256	/**	344	/**
257	* Return the outermost environment object for a given object.	345	* Return the outermost environment object for a given object.
258	*/	346	*/
259		347
		348	object *
260	object *object_get_env_recursive (object *op) {	349	object_get_env_recursive (object *op)
		350	{
261	while (op->env != NULL)	351	while (op->env != NULL)
262	op = op->env;	352	op = op->env;
263	return op;	353	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	}	354	}
278		355
279	/*	356	/*
280	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	357	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
281	* Some error messages.	358	* Some error messages.
282	* The result of the dump is stored in the static global errmsg array.	359	* The result of the dump is stored in the static global errmsg array.
283	*/	360	*/
284		361
285	void dump_object2(object *op) {	362	char *
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) {	363	dump_object (object *op)
332	if(op==NULL) {	364	{
333	strcpy(errmsg,"[NULL pointer]");	365	if (!op)
334	return;	366	return strdup ("[NULLOBJ]");
335	}
336	errmsg[0]='\0';
337	dump_object2(op);
338	}
339		367
340	void dump_all_objects(void) {	368	object_freezer freezer;
341	object *op;	369	save_object (freezer, op, 3);
342	for(op=objects;op!=NULL;op=op->next) {	370	return freezer.as_string ();
343	dump_object(op);
344	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
345	}
346	}	371	}
347		372
348	/*	373	/*
349	* get_nearest_part(multi-object, object 2) returns the part of the	374	* get_nearest_part(multi-object, object 2) returns the part of the
350	* multi-object 1 which is closest to the second object.	375	* multi-object 1 which is closest to the second object.
351	* If it's not a multi-object, it is returned.	376	* If it's not a multi-object, it is returned.
352	*/	377	*/
353		378
		379	object *
354	object *get_nearest_part(object *op, const object *pl) {	380	get_nearest_part (object *op, const object *pl)
		381	{
355	object *tmp,*closest;	382	object *tmp, *closest;
356	int last_dist,i;	383	int last_dist, i;
		384
357	if(op->more==NULL)	385	if (op->more == NULL)
358	return op;	386	return op;
359	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	387	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
360	if((i=distance(tmp,pl))<last_dist)	388	if ((i = distance (tmp, pl)) < last_dist)
361	closest=tmp,last_dist=i;	389	closest = tmp, last_dist = i;
362	return closest;	390	return closest;
363	}	391	}
364		392
365	/*	393	/*
366	* Returns the object which has the count-variable equal to the argument.	394	* Returns the object which has the count-variable equal to the argument.
367	*/	395	*/
368		396
		397	object *
369	object *find_object(tag_t i) {	398	find_object (tag_t i)
370	object *op;	399	{
371	for(op=objects;op!=NULL;op=op->next)	400	for (object *op = object::first; op; op = op->next)
372	if(op->count==i)	401	if (op->count == i)
373	break;	402	return op;
		403
374	return op;	404	return 0;
375	}	405	}
376		406
377	/*	407	/*
378	* Returns the first object which has a name equal to the argument.	408	* Returns the first object which has a name equal to the argument.
379	* Used only by the patch command, but not all that useful.	409	* Used only by the patch command, but not all that useful.
380	* Enables features like "patch <name-of-other-player> food 999"	410	* Enables features like "patch <name-of-other-player> food 999"
381	*/	411	*/
382		412
		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;
		418
386	for(op=objects;op!=NULL;op=op->next)	419	for (op = object::first; op != NULL; op = op->next)
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	}
476
477	/* Set the owner to clone's current owner and set the skill and experience
478	* objects to clone's objects (typically those objects that where the owner's
479	* current skill and experience objects at the time when clone's owner was
480	* set - not the owner's current skill and experience objects).
481	*
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	{
489	object *owner = get_owner (clone);
490	if (owner == NULL) {
491	/* players don't have owners - they own themselves. Update
492	* as appropriate.
493	*/
494	if (clone->type == PLAYER) owner=clone;
495	else return;
496	}
497	set_owner(op, owner);
498
499	}
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	}	453	}
518		454
519	/* Zero the key_values on op, decrementing the shared-string	455	/* Zero the key_values on op, decrementing the shared-string
520	* refcounts and freeing the links.	456	* refcounts and freeing the links.
521	*/	457	*/
		458	static void
522	static void free_key_values(object * op)	459	free_key_values (object *op)
523	{	460	{
524	for (key_value *i = op->key_values; i != 0; )	461	for (key_value *i = op->key_values; i != 0;)
525	{	462	{
526	key_value *next = i->next;	463	key_value *next = i->next;
527	delete i;	464	delete i;
		465
528	i = next;	466	i = next;
529	}	467	}
530		468
531	op->key_values = 0;	469	op->key_values = 0;
532	}	470	}
533		471
534	/*	472	/*
535	* clear_object() frees everything allocated by an object, and also
536	* clears all variables and flags to default settings.
537	*/
538
539	void clear_object(object *op)
540	{
541	op->clear ();
542
543	free_key_values (op);
544
545	/* the memset will clear all these values for us, but we need
546	* to reduce the refcount on them.
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,	473	* copy_to first frees everything allocated by the dst object,
589	* and then copies the contends of the first object into the second	474	* and then copies the contents of itself into the second
590	* object, allocating what needs to be allocated. Basically, any	475	* object, allocating what needs to be allocated. Basically, any
591	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	476	* 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	477	* if the first object is freed, the pointers in the new object
593	* will point at garbage.	478	* will point at garbage.
594	*/	479	*/
595		480	void
596	void copy_object(object *op2, object *op)	481	object::copy_to (object *dst)
597	{	482	{
598	int is_freed=QUERY_FLAG(op,FLAG_FREED),is_removed=QUERY_FLAG(op,FLAG_REMOVED);	483	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
		484	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
599		485
600	op->clear ();	486	*(object_copy *)dst = *this;
601		487
602	free_key_values (op);	488	if (is_freed)
		489	SET_FLAG (dst, FLAG_FREED);
603		490
604	*(object_special *)op = *(object_special *)op2;	491	if (is_removed)
605	op2->clone (op);	492	SET_FLAG (dst, FLAG_REMOVED);
606		493
607	if (is_freed) SET_FLAG(op,FLAG_FREED);
608	if (is_removed) SET_FLAG(op,FLAG_REMOVED);
609
610	if (op2->speed < 0)	494	if (speed < 0)
611	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	495	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
612		496
613	/* Copy over key_values, if any. */	497	/* Copy over key_values, if any. */
614	if (op2->key_values != NULL) {	498	if (key_values)
		499	{
615	key_value *tail = NULL;	500	key_value *tail = 0;
616	key_value *i;	501	key_value *i;
617		502
618	op->key_values = NULL;	503	dst->key_values = 0;
619		504
620	for (i = op2->key_values; i != NULL; i = i->next)	505	for (i = key_values; i; i = i->next)
621	{	506	{
622	key_value *new_link = new key_value;	507	key_value *new_link = new key_value;
623		508
624	new_link->next = NULL;	509	new_link->next = 0;
625	new_link->key = i->key;	510	new_link->key = i->key;
626	new_link->value = i->value;	511	new_link->value = i->value;
627		512
628	/* Try and be clever here, too. */	513	/* Try and be clever here, too. */
629	if (op->key_values == NULL)	514	if (!dst->key_values)
630	{	515	{
631	op->key_values = new_link;	516	dst->key_values = new_link;
632	tail = new_link;	517	tail = new_link;
633	}	518	}
634	else	519	else
635	{	520	{
636	tail->next = new_link;	521	tail->next = new_link;
637	tail = new_link;	522	tail = new_link;
638	}	523	}
639	}	524	}
640	}	525	}
641		526
642	update_ob_speed (op);	527	update_ob_speed (dst);
643	}	528	}
644		529
645	/*
646	* expand_objects() allocates more objects for the list of unused objects.
647	* It is called from get_object() if the unused list is empty.
648	*/
649
650	void expand_objects(void) {
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	}
675
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;	530	object *
685		531	object::clone ()
686	if(free_objects==NULL)	532	{
687	expand_objects();	533	object *neu = create ();
688		534	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;	535	return neu;
720	}	536	}
721		537
722	/*	538	/*
723	* If an object with the IS_TURNABLE() flag needs to be turned due	539	* 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	540	* 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.	541	* be called to update the face variable, _and_ how it looks on the map.
726	*/	542	*/
727		543
		544	void
728	void update_turn_face(object *op) {	545	update_turn_face (object *op)
		546	{
729	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	547	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || op->arch == NULL)
730	return;	548	return;
731	SET_ANIMATION(op, op->direction);	549	SET_ANIMATION (op, op->direction);
732	update_object(op,UP_OBJ_FACE);	550	update_object (op, UP_OBJ_FACE);
733	}	551	}
734		552
735	/*	553	/*
736	* Updates the speed of an object. If the speed changes from 0 to another	554	* 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.	555	* 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.	556	* This function needs to be called whenever the speed of an object changes.
739	*/	557	*/
740		558	void
741	void update_ob_speed(object *op) {	559	update_ob_speed (object *op)
		560	{
742	extern int arch_init;	561	extern int arch_init;
743		562
744	/* No reason putting the archetypes objects on the speed list,	563	/* No reason putting the archetypes objects on the speed list,
745	* since they never really need to be updated.	564	* since they never really need to be updated.
746	*/	565	*/
747		566
748	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {	567	if (QUERY_FLAG (op, FLAG_FREED) && op->speed)
		568	{
749	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	569	LOG (llevError, "Object %s is freed but has speed.\n", &op->name);
750	#ifdef MANY_CORES	570	#ifdef MANY_CORES
751	abort();	571	abort ();
752	#else	572	#else
753	op->speed = 0;	573	op->speed = 0;
754	#endif	574	#endif
755	}	575	}
		576
756	if (arch_init) {	577	if (arch_init)
		578	return;
		579
		580	if (FABS (op->speed) > MIN_ACTIVE_SPEED)
		581	{
		582	/* If already on active list, don't do anything */
		583	if (op->active_next || op->active_prev || op == active_objects)
757	return;	584	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		585
764	/* process_events() expects us to insert the object at the beginning	586	/* process_events() expects us to insert the object at the beginning
765	* of the list. */	587	* of the list. */
766	op->active_next = active_objects;	588	op->active_next = active_objects;
		589
767	if (op->active_next!=NULL)	590	if (op->active_next != NULL)
768	op->active_next->active_prev = op;	591	op->active_next->active_prev = op;
		592
769	active_objects = op;	593	active_objects = op;
		594	}
		595	else
770	}	596	{
771	else {
772	/* If not on the active list, nothing needs to be done */	597	/* If not on the active list, nothing needs to be done */
773	if (!op->active_next && !op->active_prev && op!=active_objects)	598	if (!op->active_next && !op->active_prev && op != active_objects)
774	return;	599	return;
775		600
776	if (op->active_prev==NULL) {	601	if (op->active_prev == NULL)
		602	{
777	active_objects = op->active_next;	603	active_objects = op->active_next;
		604
778	if (op->active_next!=NULL)	605	if (op->active_next != NULL)
779	op->active_next->active_prev = NULL;	606	op->active_next->active_prev = NULL;
780	}	607	}
781	else {	608	else
		609	{
782	op->active_prev->active_next = op->active_next;	610	op->active_prev->active_next = op->active_next;
		611
783	if (op->active_next)	612	if (op->active_next)
784	op->active_next->active_prev = op->active_prev;	613	op->active_next->active_prev = op->active_prev;
785	}	614	}
		615
786	op->active_next = NULL;	616	op->active_next = NULL;
787	op->active_prev = NULL;	617	op->active_prev = NULL;
788	}	618	}
789	}	619	}
790		620
791	/* This function removes object 'op' from the list of active	621	/* This function removes object 'op' from the list of active
792	* objects.	622	* objects.
…		…
794	* reference maps where you don't want an object that isn't	624	* reference maps where you don't want an object that isn't
795	* in play chewing up cpu time getting processed.	625	* in play chewing up cpu time getting processed.
796	* The reverse of this is to call update_ob_speed, which	626	* The reverse of this is to call update_ob_speed, which
797	* will do the right thing based on the speed of the object.	627	* will do the right thing based on the speed of the object.
798	*/	628	*/
		629	void
799	void remove_from_active_list(object *op)	630	remove_from_active_list (object *op)
800	{	631	{
801	/* If not on the active list, nothing needs to be done */	632	/* If not on the active list, nothing needs to be done */
802	if (!op->active_next && !op->active_prev && op!=active_objects)	633	if (!op->active_next && !op->active_prev && op != active_objects)
803	return;	634	return;
804		635
805	if (op->active_prev==NULL) {	636	if (op->active_prev == NULL)
		637	{
806	active_objects = op->active_next;	638	active_objects = op->active_next;
807	if (op->active_next!=NULL)	639	if (op->active_next != NULL)
808	op->active_next->active_prev = NULL;	640	op->active_next->active_prev = NULL;
		641	}
		642	else
809	}	643	{
810	else {
811	op->active_prev->active_next = op->active_next;	644	op->active_prev->active_next = op->active_next;
812	if (op->active_next)	645	if (op->active_next)
813	op->active_next->active_prev = op->active_prev;	646	op->active_next->active_prev = op->active_prev;
814	}	647	}
815	op->active_next = NULL;	648	op->active_next = NULL;
816	op->active_prev = NULL;	649	op->active_prev = NULL;
817	}	650	}
818		651
819	/*	652	/*
820	* update_object() updates the array which represents the map.	653	* update_object() updates the the map.
821	* It takes into account invisible objects (and represent squares covered	654	* It takes into account invisible objects (and represent squares covered
822	* by invisible objects by whatever is below them (unless it's another	655	* by invisible objects by whatever is below them (unless it's another
823	* invisible object, etc...)	656	* invisible object, etc...)
824	* If the object being updated is beneath a player, the look-window	657	* If the object being updated is beneath a player, the look-window
825	* of that player is updated (this might be a suboptimal way of	658	* of that player is updated (this might be a suboptimal way of
826	* updating that window, though, since update_object() is called _often_)	659	* updating that window, though, since update_object() is called _often_)
827	*	660	*
828	* action is a hint of what the caller believes need to be done.	661	* action is a hint of what the caller believes need to be done.
829	* For example, if the only thing that has changed is the face (due to
830	* an animation), we don't need to call update_position until that actually
831	* comes into view of a player. OTOH, many other things, like addition/removal
832	* of walls or living creatures may need us to update the flags now.
833	* current action are:	662	* current action are:
834	* UP_OBJ_INSERT: op was inserted	663	* UP_OBJ_INSERT: op was inserted
835	* UP_OBJ_REMOVE: op was removed	664	* UP_OBJ_REMOVE: op was removed
836	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	665	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
837	* as that is easier than trying to look at what may have changed.	666	* as that is easier than trying to look at what may have changed.
838	* UP_OBJ_FACE: only the objects face has changed.	667	* UP_OBJ_FACE: only the objects face has changed.
839	*/	668	*/
840		669	void
841	void update_object(object *op, int action) {	670	update_object (object *op, int action)
842	int update_now=0, flags;	671	{
843	MoveType move_on, move_off, move_block, move_slow;	672	MoveType move_on, move_off, move_block, move_slow;
844		673
845	if (op == NULL) {	674	if (op == NULL)
		675	{
846	/* this should never happen */	676	/* this should never happen */
847	LOG(llevDebug,"update_object() called for NULL object.\n");	677	LOG (llevDebug, "update_object() called for NULL object.\n");
848	return;	678	return;
849	}
850		679	}
851	if(op->env!=NULL) {	680
		681	if (op->env)
		682	{
852	/* Animation is currently handled by client, so nothing	683	/* Animation is currently handled by client, so nothing
853	* to do in this case.	684	* to do in this case.
854	*/	685	*/
855	return;	686	return;
856	}	687	}
857		688
858	/* If the map is saving, don't do anything as everything is	689	/* If the map is saving, don't do anything as everything is
859	* going to get freed anyways.	690	* going to get freed anyways.
860	*/	691	*/
861	if (!op->map || op->map->in_memory == MAP_SAVING) return;	692	if (!op->map || op->map->in_memory == MAP_SAVING)
862		693	return;
		694
863	/* make sure the object is within map boundaries */	695	/* make sure the object is within map boundaries */
864	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	696	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)) {	697	{
866	LOG(llevError,"update_object() called for object out of map!\n");	698	LOG (llevError, "update_object() called for object out of map!\n");
867	#ifdef MANY_CORES	699	#ifdef MANY_CORES
868	abort();	700	abort ();
869	#endif	701	#endif
870	return;	702	return;
871	}
872		703	}
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		704
		705	mapspace &m = op->ms ();
		706
		707	if (m.flags_ & P_NEED_UPDATE)
		708	/* nop */;
880	if (action == UP_OBJ_INSERT) {	709	else if (action == UP_OBJ_INSERT)
		710	{
		711	// this is likely overkill, TODO: revisit (schmorp)
881	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	712	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))	713	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
885	update_now=1;	714	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
886		715	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		716	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
887	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	717	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
888	update_now=1;	718	|| (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;	719	|| (m.move_off | op->move_off ) != m.move_off
		720	|| (m.move_slow | op->move_slow) != m.move_slow
895	/* This isn't perfect, but I don't expect a lot of objects to	721	/* This isn't perfect, but I don't expect a lot of objects to
896	* to have move_allow right now.	722	* to have move_allow right now.
897	*/	723	*/
898	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	724	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
899	update_now=1;	725	|| 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;	726	m.flags_ = P_NEED_UPDATE;
901	}	727	}
902	/* if the object is being removed, we can't make intelligent	728	/* if the object is being removed, we can't make intelligent
903	* decisions, because remove_ob can't really pass the object	729	* decisions, because remove_ob can't really pass the object
904	* that is being removed.	730	* that is being removed.
905	*/	731	*/
906	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	732	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
907	update_now=1;	733	m.flags_ = P_NEED_UPDATE;
908	} else if (action == UP_OBJ_FACE) {	734	else if (action == UP_OBJ_FACE)
909	/* Nothing to do for that case */	735	/* Nothing to do for that case */ ;
910	}
911	else {	736	else
912	LOG(llevError,"update_object called with invalid action: %d\n", action);	737	LOG (llevError, "update_object called with invalid action: %d\n", action);
913	}
914		738
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)	739	if (op->more)
921	update_object(op->more, action);	740	update_object (op->more, action);
922	}	741	}
923		742
		743	object::vector object::objects; // not yet used
		744	object *object::first;
		745
		746	object::object ()
		747	{
		748	SET_FLAG (this, FLAG_REMOVED);
		749
		750	expmul = 1.0;
		751	face = blank_face;
		752	}
		753
		754	object::~object ()
		755	{
		756	free_key_values (this);
		757	}
		758
		759	void object::link ()
		760	{
		761	count = ++ob_count;
		762	uuid = gen_uuid ();
		763
		764	prev = 0;
		765	next = object::first;
		766
		767	if (object::first)
		768	object::first->prev = this;
		769
		770	object::first = this;
		771	}
		772
		773	void object::unlink ()
		774	{
		775	if (this == object::first)
		776	object::first = next;
		777
		778	/* Remove this object from the list of used objects */
		779	if (prev) prev->next = next;
		780	if (next) next->prev = prev;
		781
		782	prev = 0;
		783	next = 0;
		784	}
		785
		786	object *object::create ()
		787	{
		788	object *op = new object;
		789	op->link ();
		790	return op;
		791	}
924		792
925	/*	793	/*
926	* free_object() frees everything allocated by an object, removes	794	* free_object() frees everything allocated by an object, removes
927	* it from the list of used objects, and puts it on the list of	795	* 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.	796	* free objects. The IS_FREED() flag is set in the object.
929	* The object must have been removed by remove_ob() first for	797	* The object must have been removed by remove_ob() first for
930	* this function to succeed.	798	* this function to succeed.
931	*	799	*
932	* If free_inventory is set, free inventory as well. Else drop items in	800	* If destroy_inventory is set, free inventory as well. Else drop items in
933	* inventory to the ground.	801	* inventory to the ground.
934	*/	802	*/
		803	void
		804	object::do_destroy ()
		805	{
		806	attachable::do_destroy ();
935		807
936	void free_object(object *ob) {	808	if (flag [FLAG_IS_LINKED])
937	free_object2(ob, 0);	809	remove_button_link (this);
938	}
939	void free_object2(object *ob, int free_inventory) {
940	object *tmp,*op;
941		810
942	ob->clear ();	811	if (flag [FLAG_FRIENDLY])
943
944	if (!QUERY_FLAG(ob,FLAG_REMOVED)) {
945	LOG(llevDebug,"Free object called with non removed object\n");
946	dump_object(ob);
947	#ifdef MANY_CORES
948	abort();
949	#endif
950	}
951	if(QUERY_FLAG(ob,FLAG_FRIENDLY)) {
952	LOG(llevMonster,"Warning: tried to free friendly object.\n");
953	remove_friendly_object(ob);	812	remove_friendly_object (this);
954	}	813
955	if(QUERY_FLAG(ob,FLAG_FREED)) {	814	if (!flag [FLAG_REMOVED])
956	dump_object(ob);	815	remove ();
957	LOG(llevError,"Trying to free freed object.\n%s\n",errmsg);	816
		817	if (flag [FLAG_FREED])
958	return;	818	return;
		819
		820	flag [FLAG_FREED] = 1;
		821
		822	// hack to ensure that freed objects still have a valid map
		823	{
		824	static maptile *freed_map; // freed objects are moved here to avoid crashes
		825
		826	if (!freed_map)
		827	{
		828	freed_map = new maptile;
		829
		830	freed_map->name = "/internal/freed_objects_map";
		831	freed_map->width = 3;
		832	freed_map->height = 3;
		833
		834	freed_map->allocate ();
959	}	835	}
960	if(ob->more!=NULL) {	836
961	free_object2(ob->more, free_inventory);	837	map = freed_map;
962	ob->more=NULL;	838	x = 1;
		839	y = 1;
963	}	840	}
964	if (ob->inv) {	841
		842	more = 0;
		843	head = 0;
		844	inv = 0;
		845
		846	// clear those pointers that likely might have circular references to us
		847	owner = 0;
		848	enemy = 0;
		849	attacked_by = 0;
		850
		851	// only relevant for players(?), but make sure of it anyways
		852	contr = 0;
		853
		854	/* Remove object from the active list */
		855	speed = 0;
		856	update_ob_speed (this);
		857
		858	unlink ();
		859	}
		860
		861	/*
		862	* Remove and free all objects in the inventory of the given object.
		863	* object.c ?
		864	*/
		865	void
		866	object::destroy_inv (bool drop_to_ground)
		867	{
		868	if (!inv)
		869	return;
		870
965	/* Only if the space blocks everything do we not process -	871	/* Only if the space blocks everything do we not process -
966	* if some form of movemnt is allowed, let objects	872	* if some form of movement is allowed, let objects
967	* drop on that space.	873	* drop on that space.
968	*/	874	*/
969	if (free_inventory || ob->map==NULL || ob->map->in_memory!=MAP_IN_MEMORY ||	875	if (!drop_to_ground || !map || map->in_memory != MAP_IN_MEMORY || GET_MAP_MOVE_BLOCK (map, x, y) == MOVE_ALL)
970	(GET_MAP_MOVE_BLOCK(ob->map, ob->x, ob->y) == MOVE_ALL))	876	{
		877	while (inv)
971	{	878	{
972	op=ob->inv;	879	inv->destroy_inv (drop_to_ground);
973	while(op!=NULL) {	880	inv->destroy ();
974	tmp=op->below;	881	}
		882	}
		883	else
		884	{ /* Put objects in inventory onto this space */
		885	while (inv)
		886	{
		887	object *op = inv;
		888
		889	if (op->flag [FLAG_STARTEQUIP]
		890	|| op->flag [FLAG_NO_DROP]
		891	|| op->type == RUNE
		892	|| op->type == TRAP
		893	|| op->flag [FLAG_IS_A_TEMPLATE])
		894	op->destroy ();
		895	else
		896	{
975	remove_ob(op);	897	op->remove ();
976	free_object2(op, free_inventory);
977	op=tmp;	898	op->x = x;
		899	op->y = y;
		900	insert_ob_in_map (op, map, 0, 0); /* Insert in same map as the envir */
978	}	901	}
979	}	902	}
980	else { /* Put objects in inventory onto this space */
981	op=ob->inv;
982	while(op!=NULL) {
983	tmp=op->below;
984	remove_ob(op);
985	if(QUERY_FLAG(op,FLAG_STARTEQUIP)||QUERY_FLAG(op,FLAG_NO_DROP) ||
986	op->type==RUNE || op->type==TRAP || QUERY_FLAG(op,FLAG_IS_A_TEMPLATE))
987	free_object(op);
988	else {
989	op->x=ob->x;
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	}
996	}	903	}
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	}	904	}
1038		905
1039	/*	906	void
1040	* count_free() returns the number of objects on the list of free objects.	907	object::destroy (bool destroy_inventory)
1041	*/
1042
1043	int count_free ()
1044	{	908	{
1045	int i=0;	909	if (destroyed ())
1046	object *tmp=free_objects;
1047	while(tmp!=NULL)
1048	tmp=tmp->next, i++;
1049	return i;	910	return;
1050	}
1051		911
1052	/*	912	if (more)
1053	* count_used() returns the number of objects on the list of used objects.	913	{
1054	*/	914	//TODO: non-head objects must not have inventory
		915	more->destroy (destroy_inventory);
		916	more = 0;
		917	}
1055		918
1056	int count_used()	919	if (destroy_inventory)
1057	{	920	destroy_inv (true);
1058	int i=0;
1059	object *tmp=objects;
1060	while(tmp!=NULL)
1061	tmp=tmp->next, i++;
1062	return i;
1063	}
1064		921
1065	/*	922	attachable::destroy ();
1066	* count_active() returns the number of objects on the list of active objects.
1067	*/
1068
1069	int count_active()
1070	{
1071	int i=0;
1072	object *tmp=active_objects;
1073	while(tmp!=NULL)
1074	tmp=tmp->active_next, i++;
1075	return i;
1076	}	923	}
1077		924
1078	/*	925	/*
1079	* sub_weight() recursively (outwards) subtracts a number from the	926	* sub_weight() recursively (outwards) subtracts a number from the
1080	* weight of an object (and what is carried by it's environment(s)).	927	* weight of an object (and what is carried by it's environment(s)).
1081	*/	928	*/
1082		929	void
1083	void sub_weight (object *op, signed long weight) {	930	sub_weight (object *op, signed long weight)
		931	{
1084	while (op != NULL) {	932	while (op != NULL)
		933	{
1085	if (op->type == CONTAINER) {	934	if (op->type == CONTAINER)
1086	weight=(signed long)(weight*(100-op->stats.Str)/100);	935	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1087	}	936
1088	op->carrying-=weight;	937	op->carrying -= weight;
1089	op = op->env;	938	op = op->env;
1090	}	939	}
1091	}	940	}
1092		941
1093	/* remove_ob(op):	942	/* op->remove ():
1094	* This function removes the object op from the linked list of objects	943	* 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	944	* which it is currently tied to. When this function is done, the
1096	* object will have no environment. If the object previously had an	945	* object will have no environment. If the object previously had an
1097	* environment, the x and y coordinates will be updated to	946	* environment, the x and y coordinates will be updated to
1098	* the previous environment.	947	* the previous environment.
1099	* Beware: This function is called from the editor as well!	948	* Beware: This function is called from the editor as well!
1100	*/	949	*/
1101		950	void
1102	void remove_ob(object *op) {	951	object::remove ()
		952	{
1103	object *tmp,*last=NULL;	953	object *tmp, *last = 0;
1104	object *otmp;	954	object *otmp;
1105	tag_t tag;
1106	int check_walk_off;
1107	mapstruct *m;
1108	sint16 x,y;
1109
1110		955
1111	if(QUERY_FLAG(op,FLAG_REMOVED)) {	956	if (QUERY_FLAG (this, FLAG_REMOVED))
1112	dump_object(op);	957	return;
1113	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1114		958
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);	959	SET_FLAG (this, FLAG_REMOVED);
		960	INVOKE_OBJECT (REMOVE, this);
1131		961
		962	if (more)
		963	more->remove ();
		964
1132	/*	965	/*
1133	* In this case, the object to be removed is in someones	966	* In this case, the object to be removed is in someones
1134	* inventory.	967	* inventory.
1135	*/	968	*/
1136	if(op->env!=NULL) {	969	if (env)
		970	{
1137	if(op->nrof)	971	if (nrof)
1138	sub_weight(op->env, op->weight*op->nrof);	972	sub_weight (env, weight * nrof);
1139	else	973	else
1140	sub_weight(op->env, op->weight+op->carrying);	974	sub_weight (env, weight + carrying);
1141		975
1142	/* NO_FIX_PLAYER is set when a great many changes are being	976	/* NO_FIX_PLAYER is set when a great many changes are being
1143	* made to players inventory. If set, avoiding the call	977	* made to players inventory. If set, avoiding the call
1144	* to save cpu time.	978	* to save cpu time.
1145	*/	979	*/
1146	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	980	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1147	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	981	otmp->update_stats ();
1148	fix_player(otmp);
1149		982
1150	if(op->above!=NULL)	983	if (above != NULL)
1151	op->above->below=op->below;	984	above->below = below;
1152	else	985	else
1153	op->env->inv=op->below;	986	env->inv = below;
1154		987
1155	if(op->below!=NULL)	988	if (below != NULL)
1156	op->below->above=op->above;	989	below->above = above;
1157		990
1158	/* we set up values so that it could be inserted into	991	/* we set up values so that it could be inserted into
1159	* the map, but we don't actually do that - it is up	992	* the map, but we don't actually do that - it is up
1160	* to the caller to decide what we want to do.	993	* to the caller to decide what we want to do.
		994	*/
		995	x = env->x, y = env->y;
		996	map = env->map;
		997	above = 0, below = 0;
		998	env = 0;
		999	}
		1000	else if (map)
		1001	{
		1002	/* Re did the following section of code - it looks like it had
		1003	* lots of logic for things we no longer care about
		1004	*/
		1005
		1006	/* link the object above us */
		1007	if (above)
		1008	above->below = below;
		1009	else
		1010	map->at (x, y).top = below; /* we were top, set new top */
		1011
		1012	/* Relink the object below us, if there is one */
		1013	if (below)
		1014	below->above = above;
		1015	else
		1016	{
		1017	/* Nothing below, which means we need to relink map object for this space
		1018	* use translated coordinates in case some oddness with map tiling is
		1019	* evident
1161	*/	1020	*/
1162	op->x=op->env->x,op->y=op->env->y;	1021	if (GET_MAP_OB (map, x, y) != this)
1163	op->map=op->env->map;	1022	{
1164	op->above=NULL,op->below=NULL;	1023	char *dump = dump_object (this);
1165	op->env=NULL;	1024	LOG (llevError,
		1025	"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", dump);
		1026	free (dump);
		1027	dump = dump_object (GET_MAP_OB (map, x, y));
		1028	LOG (llevError, "%s\n", dump);
		1029	free (dump);
		1030	}
		1031
		1032	map->at (x, y).bot = above; /* goes on above it. */
		1033	}
		1034
		1035	above = 0;
		1036	below = 0;
		1037
		1038	if (map->in_memory == MAP_SAVING)
1166	return;	1039	return;
1167	}
1168		1040
1169	/* If we get here, we are removing it from a map */	1041	int check_walk_off = !flag [FLAG_NO_APPLY];
1170	if (op->map == NULL) return;
1171		1042
1172	x = op->x;	1043	for (tmp = GET_MAP_OB (map, x, y); tmp; tmp = tmp->above)
1173	y = op->y;	1044	{
1174	m = get_map_from_coord(op->map, &x, &y);	1045	/* No point updating the players look faces if he is the object
1175		1046	* 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	*/	1047	*/
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		1048
1190	/* Re did the following section of code - it looks like it had	1049	if (tmp->type == PLAYER && tmp != this)
1191	* lots of logic for things we no longer care about	1050	{
1192	*/	1051	/* If a container that the player is currently using somehow gets
1193		1052	* removed (most likely destroyed), update the player view
1194	/* link the object above us */	1053	* 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	*/	1054	*/
1208	if(GET_MAP_OB(m,x,y)!=op) {	1055	if (tmp->container == this)
1209	dump_object(op);	1056	{
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);	1057	flag [FLAG_APPLIED] = 0;
1211	dump_object(GET_MAP_OB(m,x,y));	1058	tmp->container = 0;
1212	LOG(llevError,"%s\n",errmsg);	1059	}
		1060
		1061	if (tmp->contr->ns)
		1062	tmp->contr->ns->floorbox_update ();
		1063	}
		1064
		1065	/* See if player moving off should effect something */
		1066	if (check_walk_off
		1067	&& ((move_type & tmp->move_off)
		1068	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1069	{
		1070	move_apply (tmp, this, 0);
		1071
		1072	if (destroyed ())
		1073	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
		1074	}
		1075
		1076	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
		1077
		1078	if (tmp->above == tmp)
		1079	tmp->above = 0;
		1080
		1081	last = tmp;
1213	}	1082	}
1214	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1215	}
1216	op->above=NULL;
1217	op->below=NULL;
1218		1083
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 */	1084	/* last == NULL of there are no objects on this space */
1258	if (last==NULL) {	1085	if (!last)
1259	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1086	map->at (x, y).flags_ = P_NEED_UPDATE;
1260	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
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	1087	else
1268	update_object(last, UP_OBJ_REMOVE);	1088	update_object (last, UP_OBJ_REMOVE);
1269		1089
1270	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1090	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1271	update_all_los(op->map, op->x, op->y);	1091	update_all_los (map, x, y);
1272		1092	}
1273	}	1093	}
1274		1094
1275	/*	1095	/*
1276	* merge_ob(op,top):	1096	* merge_ob(op,top):
1277	*	1097	*
1278	* This function goes through all objects below and including top, and	1098	* This function goes through all objects below and including top, and
1279	* merges op to the first matching object.	1099	* merges op to the first matching object.
1280	* If top is NULL, it is calculated.	1100	* If top is NULL, it is calculated.
1281	* Returns pointer to object if it succeded in the merge, otherwise NULL	1101	* Returns pointer to object if it succeded in the merge, otherwise NULL
1282	*/	1102	*/
1283		1103	object *
1284	object *merge_ob(object *op, object *top) {	1104	merge_ob (object *op, object *top)
		1105	{
1285	if(!op->nrof)	1106	if (!op->nrof)
1286	return 0;	1107	return 0;
1287	if(top==NULL)	1108
		1109	if (top)
1288	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1110	for (top = op; top && top->above; top = top->above)
		1111	;
		1112
1289	for(;top!=NULL;top=top->below) {	1113	for (; top; top = top->below)
		1114	{
1290	if(top==op)	1115	if (top == op)
1291	continue;	1116	continue;
1292	if (CAN_MERGE(op,top))	1117
1293	{	1118	if (object::can_merge (op, top))
		1119	{
1294	top->nrof+=op->nrof;	1120	top->nrof += op->nrof;
		1121
1295	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1122	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1296	op->weight = 0; /* Don't want any adjustements now */	1123	op->weight = 0; /* Don't want any adjustements now */
1297	remove_ob(op);	1124	op->destroy ();
1298	free_object(op);
1299	return top;	1125	return top;
1300	}	1126	}
1301	}	1127	}
		1128
1302	return NULL;	1129	return 0;
1303	}	1130	}
1304		1131
1305	/*	1132	/*
1306	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1133	* same as insert_ob_in_map except it handle separate coordinates and do a clean
1307	* job preparing multi-part monsters	1134	* job preparing multi-part monsters
1308	*/	1135	*/
		1136	object *
1309	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1137	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
		1138	{
1310	object* tmp;	1139	object *tmp;
		1140
1311	if (op->head)	1141	if (op->head)
1312	op=op->head;	1142	op = op->head;
		1143
1313	for (tmp=op;tmp;tmp=tmp->more){	1144	for (tmp = op; tmp; tmp = tmp->more)
		1145	{
1314	tmp->x=x+tmp->arch->clone.x;	1146	tmp->x = x + tmp->arch->clone.x;
1315	tmp->y=y+tmp->arch->clone.y;	1147	tmp->y = y + tmp->arch->clone.y;
1316	}	1148	}
		1149
1317	return insert_ob_in_map (op, m, originator, flag);	1150	return insert_ob_in_map (op, m, originator, flag);
1318	}	1151	}
1319		1152
1320	/*	1153	/*
1321	* insert_ob_in_map (op, map, originator, flag):	1154	* insert_ob_in_map (op, map, originator, flag):
1322	* This function inserts the object in the two-way linked list	1155	* This function inserts the object in the two-way linked list
…		…
1335	* Return value:	1168	* Return value:
1336	* new object if 'op' was merged with other object	1169	* new object if 'op' was merged with other object
1337	* NULL if 'op' was destroyed	1170	* NULL if 'op' was destroyed
1338	* just 'op' otherwise	1171	* just 'op' otherwise
1339	*/	1172	*/
1340		1173	object *
1341	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1174	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1342	{	1175	{
1343	object *tmp, *top, *floor=NULL;	1176	object *tmp, *top, *floor = NULL;
1344	sint16 x,y;	1177	sint16 x, y;
1345		1178
1346	if (QUERY_FLAG (op, FLAG_FREED)) {	1179	if (QUERY_FLAG (op, FLAG_FREED))
		1180	{
1347	LOG (llevError, "Trying to insert freed object!\n");	1181	LOG (llevError, "Trying to insert freed object!\n");
1348	return NULL;	1182	return NULL;
		1183	}
		1184
		1185	if (m == NULL)
1349	}	1186	{
1350	if(m==NULL) {
1351	dump_object(op);	1187	char *dump = dump_object (op);
1352	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);	1188	LOG (llevError, "Trying to insert in null-map!\n%s\n", dump);
		1189	free (dump);
1353	return op;	1190	return op;
1354	}	1191	}
		1192
1355	if(out_of_map(m,op->x,op->y)) {	1193	if (out_of_map (m, op->x, op->y))
		1194	{
1356	dump_object(op);	1195	char *dump = dump_object (op);
1357	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1196	LOG (llevError, "Trying to insert object outside the map.\n%s\n", dump);
1358	#ifdef MANY_CORES	1197	#ifdef MANY_CORES
1359	/* Better to catch this here, as otherwise the next use of this object	1198	/* 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	1199	* is likely to cause a crash. Better to find out where it is getting
1361	* improperly inserted.	1200	* improperly inserted.
1362	*/	1201	*/
1363	abort();	1202	abort ();
1364	#endif	1203	#endif
		1204	free (dump);
1365	return op;	1205	return op;
1366	}	1206	}
		1207
1367	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1208	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1209	{
1368	dump_object(op);	1210	char *dump = dump_object (op);
1369	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);	1211	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", dump);
		1212	free (dump);
1370	return op;	1213	return op;
		1214	}
		1215
		1216	if (op->more)
1371	}	1217	{
1372	if(op->more!=NULL) {
1373	/* The part may be on a different map. */	1218	/* The part may be on a different map. */
1374		1219
1375	object *more = op->more;	1220	object *more = op->more;
1376		1221
1377	/* We really need the caller to normalize coordinates - if	1222	/* We really need the caller to normalize coordinates - if
1378	* we set the map, that doesn't work if the location is within	1223	* 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	1224	* a map and this is straddling an edge. So only if coordinate
1380	* is clear wrong do we normalize it.	1225	* is clear wrong do we normalize it.
1381	*/	1226	*/
1382	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1227	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1383	more->map = get_map_from_coord(m, &more->x, &more->y);	1228	more->map = get_map_from_coord (m, &more->x, &more->y);
1384	} else if (!more->map) {	1229	else if (!more->map)
		1230	{
1385	/* For backwards compatibility - when not dealing with tiled maps,	1231	/* For backwards compatibility - when not dealing with tiled maps,
1386	* more->map should always point to the parent.	1232	* more->map should always point to the parent.
1387	*/	1233	*/
1388	more->map = m;	1234	more->map = m;
1389	}	1235	}
1390		1236
1391	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1237	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1238	{
1392	if ( ! op->head)	1239	if (!op->head)
1393	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1240	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
		1241
1394	return NULL;	1242	return 0;
1395	}	1243	}
1396	}	1244	}
		1245
1397	CLEAR_FLAG(op,FLAG_REMOVED);	1246	CLEAR_FLAG (op, FLAG_REMOVED);
1398		1247
1399	/* Ideally, the caller figures this out. However, it complicates a lot	1248	/* Ideally, the caller figures this out. However, it complicates a lot
1400	* of areas of callers (eg, anything that uses find_free_spot would now	1249	* of areas of callers (eg, anything that uses find_free_spot would now
1401	* need extra work	1250	* need extra work
1402	*/	1251	*/
1403	op->map=get_map_from_coord(m, &op->x, &op->y);	1252	op->map = get_map_from_coord (m, &op->x, &op->y);
1404	x = op->x;	1253	x = op->x;
1405	y = op->y;	1254	y = op->y;
1406		1255
1407	/* this has to be done after we translate the coordinates.	1256	/* this has to be done after we translate the coordinates.
1408	*/	1257	*/
1409	if(op->nrof && !(flag & INS_NO_MERGE)) {	1258	if (op->nrof && !(flag & INS_NO_MERGE))
1410	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1259	for (tmp = GET_MAP_OB (op->map, x, y); tmp != NULL; tmp = tmp->above)
1411	if (CAN_MERGE(op,tmp)) {	1260	if (object::can_merge (op, tmp))
		1261	{
1412	op->nrof+=tmp->nrof;	1262	op->nrof += tmp->nrof;
1413	remove_ob(tmp);	1263	tmp->destroy ();
1414	free_object(tmp);	1264	}
		1265
		1266	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1267	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1268
		1269	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1270	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1271
		1272	if (flag & INS_BELOW_ORIGINATOR)
		1273	{
		1274	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1275	{
		1276	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1277	abort ();
		1278	}
		1279
		1280	op->above = originator;
		1281	op->below = originator->below;
		1282
		1283	if (op->below)
		1284	op->below->above = op;
		1285	else
		1286	op->ms ().bot = op;
		1287
		1288	/* since *below* originator, no need to update top */
		1289	originator->below = op;
		1290	}
		1291	else
		1292	{
		1293	/* If there are other objects, then */
		1294	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))
		1295	{
		1296	object *last = NULL;
		1297
		1298	/*
		1299	* If there are multiple objects on this space, we do some trickier handling.
		1300	* We've already dealt with merging if appropriate.
		1301	* Generally, we want to put the new object on top. But if
		1302	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1303	* floor, we want to insert above that and no further.
		1304	* Also, if there are spell objects on this space, we stop processing
		1305	* once we get to them. This reduces the need to traverse over all of
		1306	* them when adding another one - this saves quite a bit of cpu time
		1307	* when lots of spells are cast in one area. Currently, it is presumed
		1308	* that flying non pickable objects are spell objects.
		1309	*/
		1310
		1311	while (top != NULL)
		1312	{
		1313	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1314	floor = top;
		1315
		1316	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1317	{
		1318	/* We insert above top, so we want this object below this */
		1319	top = top->below;
		1320	break;
		1321	}
		1322
		1323	last = top;
		1324	top = top->above;
1415	}	1325	}
1416	}
1417		1326
1418	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1327	/* Don't want top to be NULL, so set it to the last valid object */
1419	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1328	top = last;
1420	if (!QUERY_FLAG(op, FLAG_ALIVE))
1421	CLEAR_FLAG(op, FLAG_NO_STEAL);
1422		1329
1423	if (flag & INS_BELOW_ORIGINATOR) {	1330	/* We let update_position deal with figuring out what the space
1424	if (originator->map != op->map || originator->x != op->x ||	1331	* looks like instead of lots of conditions here.
1425	originator->y != op->y) {	1332	* 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");	1333	*/
1427	abort();	1334
		1335	/* Have object 'fall below' other objects that block view.
		1336	* Unless those objects are exits, type 66
		1337	* If INS_ON_TOP is used, don't do this processing
		1338	* Need to find the object that in fact blocks view, otherwise
		1339	* stacking is a bit odd.
		1340	*/
		1341	if (!(flag & INS_ON_TOP) &&
		1342	(get_map_flags (op->map, 0, op->x, op->y, 0, 0) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))
		1343	{
		1344	for (last = top; last != floor; last = last->below)
		1345	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1346	break;
		1347	/* Check to see if we found the object that blocks view,
		1348	* and make sure we have a below pointer for it so that
		1349	* we can get inserted below this one, which requires we
		1350	* set top to the object below us.
		1351	*/
		1352	if (last && last->below && last != floor)
		1353	top = last->below;
		1354	}
		1355	} /* If objects on this space */
		1356
		1357	if (flag & INS_MAP_LOAD)
		1358	top = GET_MAP_TOP (op->map, op->x, op->y);
		1359
		1360	if (flag & INS_ABOVE_FLOOR_ONLY)
		1361	top = floor;
		1362
		1363	/* Top is the object that our object (op) is going to get inserted above.
		1364	*/
		1365
		1366	/* First object on this space */
		1367	if (!top)
		1368	{
		1369	op->above = GET_MAP_OB (op->map, op->x, op->y);
		1370
		1371	if (op->above)
		1372	op->above->below = op;
		1373
		1374	op->below = NULL;
		1375	op->ms ().bot = op;
1428	}	1376	}
1429	op->above = originator;
1430	op->below = originator->below;
1431	if (op->below) op->below->above = op;
1432	else SET_MAP_OB(op->map, op->x, op->y, op);
1433	/* since *below* originator, no need to update top */
1434	originator->below = op;
1435	} else {	1377	else
1436	/* If there are other objects, then */
1437	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1438	object *last=NULL;
1439	/*
1440	* If there are multiple objects on this space, we do some trickier handling.
1441	* We've already dealt with merging if appropriate.
1442	* Generally, we want to put the new object on top. But if
1443	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1444	* floor, we want to insert above that and no further.
1445	* Also, if there are spell objects on this space, we stop processing
1446	* once we get to them. This reduces the need to traverse over all of
1447	* them when adding another one - this saves quite a bit of cpu time
1448	* when lots of spells are cast in one area. Currently, it is presumed
1449	* that flying non pickable objects are spell objects.
1450	*/
1451
1452	while (top != NULL) {
1453	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1454	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1455	if (QUERY_FLAG(top, FLAG_NO_PICK)
1456	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1457	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1458	{
1459	/* We insert above top, so we want this object below this */
1460	top=top->below;
1461	break;
1462	}
1463	last = top;
1464	top = top->above;
1465	}
1466	/* Don't want top to be NULL, so set it to the last valid object */
1467	top = last;
1468
1469	/* We let update_position deal with figuring out what the space
1470	* looks like instead of lots of conditions here.
1471	* makes things faster, and effectively the same result.
1472	*/
1473
1474	/* Have object 'fall below' other objects that block view.
1475	* Unless those objects are exits, type 66
1476	* If INS_ON_TOP is used, don't do this processing
1477	* Need to find the object that in fact blocks view, otherwise
1478	* stacking is a bit odd.
1479	*/
1480	if (!(flag & INS_ON_TOP) &&
1481	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1482	(op->face && !op->face->visibility)) {
1483	for (last=top; last != floor; last=last->below)
1484	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1485	/* Check to see if we found the object that blocks view,
1486	* and make sure we have a below pointer for it so that
1487	* we can get inserted below this one, which requires we
1488	* set top to the object below us.
1489	*/
1490	if (last && last->below && last != floor) top=last->below;
1491	}
1492	} /* If objects on this space */
1493	if (flag & INS_MAP_LOAD)
1494	top = GET_MAP_TOP(op->map,op->x,op->y);
1495	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1496
1497	/* Top is the object that our object (op) is going to get inserted above.
1498	*/
1499
1500	/* First object on this space */
1501	if (!top) {
1502	op->above = GET_MAP_OB(op->map, op->x, op->y);
1503	if (op->above) op->above->below = op;
1504	op->below = NULL;
1505	SET_MAP_OB(op->map, op->x, op->y, op);
1506	} else { /* get inserted into the stack above top */	1378	{ /* get inserted into the stack above top */
1507	op->above = top->above;	1379	op->above = top->above;
		1380
		1381	if (op->above)
1508	if (op->above) op->above->below = op;	1382	op->above->below = op;
		1383
1509	op->below = top;	1384	op->below = top;
1510	top->above = op;	1385	top->above = op;
1511	}	1386	}
		1387
1512	if (op->above==NULL)	1388	if (op->above == NULL)
1513	SET_MAP_TOP(op->map,op->x, op->y, op);	1389	op->ms ().top = op;
1514	} /* else not INS_BELOW_ORIGINATOR */	1390	} /* else not INS_BELOW_ORIGINATOR */
1515		1391
1516	if(op->type==PLAYER)	1392	if (op->type == PLAYER)
1517	op->contr->do_los=1;	1393	op->contr->do_los = 1;
1518		1394
1519	/* If we have a floor, we know the player, if any, will be above	1395	/* 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.	1396	* it, so save a few ticks and start from there.
1521	*/	1397	*/
1522	if (!(flag & INS_MAP_LOAD))	1398	if (!(flag & INS_MAP_LOAD))
1523	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1399	if (object *pl = op->ms ().player ())
1524	if (tmp->type == PLAYER)	1400	if (pl->contr->ns)
1525	tmp->contr->socket.update_look=1;	1401	pl->contr->ns->floorbox_update ();
1526	}
1527		1402
1528	/* If this object glows, it may affect lighting conditions that are	1403	/* If this object glows, it may affect lighting conditions that are
1529	* visible to others on this map. But update_all_los is really	1404	* 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	1405	* 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	1406	* on the map will get recalculated. The players could very well
1532	* be far away from this change and not affected in any way -	1407	* be far away from this change and not affected in any way -
1533	* this should get redone to only look for players within range,	1408	* this should get redone to only look for players within range,
1534	* or just updating the P_NEED_UPDATE for spaces within this area	1409	* or just updating the P_NEED_UPDATE for spaces within this area
1535	* of effect may be sufficient.	1410	* of effect may be sufficient.
1536	*/	1411	*/
1537	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1412	if (op->map->darkness && (op->glow_radius != 0))
1538	update_all_los(op->map, op->x, op->y);	1413	update_all_los (op->map, op->x, op->y);
1539		1414
1540
1541	/* updates flags (blocked, alive, no magic, etc) for this map space */	1415	/* updates flags (blocked, alive, no magic, etc) for this map space */
1542	update_object(op,UP_OBJ_INSERT);	1416	update_object (op, UP_OBJ_INSERT);
1543		1417
		1418	INVOKE_OBJECT (INSERT, op);
1544		1419
1545	/* Don't know if moving this to the end will break anything. However,	1420	/* 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.	1421	* we want to have floorbox_update called before calling this.
1547	*	1422	*
1548	* check_move_on() must be after this because code called from	1423	* check_move_on() must be after this because code called from
1549	* check_move_on() depends on correct map flags (so functions like	1424	* check_move_on() depends on correct map flags (so functions like
1550	* blocked() and wall() work properly), and these flags are updated by	1425	* blocked() and wall() work properly), and these flags are updated by
1551	* update_object().	1426	* update_object().
1552	*/	1427	*/
1553		1428
1554	/* if this is not the head or flag has been passed, don't check walk on status */	1429	/* 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) {	1430	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1431	{
1557	if (check_move_on(op, originator))	1432	if (check_move_on (op, originator))
1558	return NULL;	1433	return 0;
1559		1434
1560	/* If we are a multi part object, lets work our way through the check	1435	/* If we are a multi part object, lets work our way through the check
1561	* walk on's.	1436	* walk on's.
1562	*/	1437	*/
1563	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1438	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1564	if (check_move_on (tmp, originator))	1439	if (check_move_on (tmp, originator))
1565	return NULL;	1440	return 0;
1566	}	1441	}
		1442
1567	return op;	1443	return op;
1568	}	1444	}
1569		1445
1570	/* this function inserts an object in the map, but if it	1446	/* 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.	1447	* 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.	1448	* op is the object to insert it under: supplies x and the map.
1573	*/	1449	*/
		1450	void
1574	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1451	replace_insert_ob_in_map (const char *arch_string, object *op)
1575	object *tmp;	1452	{
1576	object *tmp1;	1453	object *tmp, *tmp1;
1577		1454
1578	/* first search for itself and remove any old instances */	1455	/* first search for itself and remove any old instances */
1579		1456
1580	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1457	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)
1581	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1458	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1582	remove_ob(tmp);	1459	tmp->destroy ();
1583	free_object(tmp);
1584	}
1585	}
1586		1460
1587	tmp1=arch_to_object(find_archetype(arch_string));	1461	tmp1 = arch_to_object (archetype::find (arch_string));
1588		1462
1589		1463	tmp1->x = op->x;
1590	tmp1->x = op->x; tmp1->y = op->y;	1464	tmp1->y = op->y;
1591	insert_ob_in_map(tmp1,op->map,op,0);	1465	insert_ob_in_map (tmp1, op->map, op, 0);
1592	}	1466	}
1593		1467
1594	/*	1468	/*
1595	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1469	* 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	1470	* is returned contains nr objects, and the remaining parts contains
1597	* the rest (or is removed and freed if that number is 0).	1471	* the rest (or is removed and freed if that number is 0).
1598	* On failure, NULL is returned, and the reason put into the	1472	* On failure, NULL is returned, and the reason put into the
1599	* global static errmsg array.	1473	* global static errmsg array.
1600	*/	1474	*/
1601		1475
		1476	object *
1602	object *get_split_ob(object *orig_ob, uint32 nr) {	1477	get_split_ob (object *orig_ob, uint32 nr)
		1478	{
1603	object *newob;	1479	object *newob;
1604	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1480	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1605		1481
1606	if(orig_ob->nrof<nr) {	1482	if (orig_ob->nrof < nr)
1607	sprintf(errmsg,"There are only %d %ss.",	1483	{
1608	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1484	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1609	return NULL;	1485	return NULL;
1610	}	1486	}
		1487
1611	newob = object_create_clone(orig_ob);	1488	newob = object_create_clone (orig_ob);
		1489
1612	if((orig_ob->nrof-=nr)<1) {	1490	if ((orig_ob->nrof -= nr) < 1)
1613	if ( ! is_removed)	1491	orig_ob->destroy (1);
1614	remove_ob(orig_ob);
1615	free_object2(orig_ob, 1);
1616	}
1617	else if ( ! is_removed) {	1492	else if (!is_removed)
		1493	{
1618	if(orig_ob->env!=NULL)	1494	if (orig_ob->env != NULL)
1619	sub_weight (orig_ob->env,orig_ob->weight*nr);	1495	sub_weight (orig_ob->env, orig_ob->weight * nr);
1620	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1496	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1497	{
1621	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1498	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");	1499	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1624	return NULL;	1500	return NULL;
1625	}	1501	}
1626	}	1502	}
		1503
1627	newob->nrof=nr;	1504	newob->nrof = nr;
1628		1505
1629	return newob;	1506	return newob;
1630	}	1507	}
1631		1508
1632	/*	1509	/*
1633	* decrease_ob_nr(object, number) decreases a specified number from	1510	* decrease_ob_nr(object, number) decreases a specified number from
1634	* the amount of an object. If the amount reaches 0, the object	1511	* the amount of an object. If the amount reaches 0, the object
1635	* is subsequently removed and freed.	1512	* is subsequently removed and freed.
1636	*	1513	*
1637	* Return value: 'op' if something is left, NULL if the amount reached 0	1514	* Return value: 'op' if something is left, NULL if the amount reached 0
1638	*/	1515	*/
1639		1516
		1517	object *
1640	object *decrease_ob_nr (object *op, uint32 i)	1518	decrease_ob_nr (object *op, uint32 i)
1641	{	1519	{
1642	object *tmp;	1520	object *tmp;
1643	player *pl;
1644		1521
1645	if (i == 0) /* objects with op->nrof require this check */	1522	if (i == 0) /* objects with op->nrof require this check */
1646	return op;	1523	return op;
1647		1524
1648	if (i > op->nrof)	1525	if (i > op->nrof)
1649	i = op->nrof;	1526	i = op->nrof;
1650		1527
1651	if (QUERY_FLAG (op, FLAG_REMOVED))	1528	if (QUERY_FLAG (op, FLAG_REMOVED))
		1529	op->nrof -= i;
		1530	else if (op->env)
		1531	{
		1532	/* is this object in the players inventory, or sub container
		1533	* therein?
		1534	*/
		1535	tmp = op->in_player ();
		1536	/* nope. Is this a container the player has opened?
		1537	* If so, set tmp to that player.
		1538	* IMO, searching through all the players will mostly
		1539	* likely be quicker than following op->env to the map,
		1540	* and then searching the map for a player.
		1541	*/
		1542	if (!tmp)
		1543	for_all_players (pl)
		1544	if (pl->ob->container == op->env)
		1545	{
		1546	tmp = pl->ob;
		1547	break;
		1548	}
		1549
		1550	if (i < op->nrof)
		1551	{
		1552	sub_weight (op->env, op->weight * i);
		1553	op->nrof -= i;
		1554	if (tmp)
		1555	esrv_send_item (tmp, op);
		1556	}
		1557	else
		1558	{
		1559	op->remove ();
		1560	op->nrof = 0;
		1561	if (tmp)
		1562	esrv_del_item (tmp->contr, op->count);
		1563	}
1652	{	1564	}
		1565	else
		1566	{
		1567	object *above = op->above;
		1568
		1569	if (i < op->nrof)
1653	op->nrof -= i;	1570	op->nrof -= i;
1654	}	1571	else
1655	else if (op->env != NULL)
1656	{
1657	/* is this object in the players inventory, or sub container
1658	* therein?
1659	*/	1572	{
1660	tmp = is_player_inv (op->env);	1573	op->remove ();
1661	/* nope. Is this a container the player has opened?	1574	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	}	1575	}
1673		1576
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 */	1577	/* Since we just removed op, op->above is null */
1699	for (tmp = above; tmp != NULL; tmp = tmp->above)	1578	for (tmp = above; tmp; tmp = tmp->above)
1700	if (tmp->type == PLAYER) {	1579	if (tmp->type == PLAYER)
		1580	{
1701	if (op->nrof)	1581	if (op->nrof)
1702	esrv_send_item(tmp, op);	1582	esrv_send_item (tmp, op);
1703	else	1583	else
1704	esrv_del_item(tmp->contr, op->count);	1584	esrv_del_item (tmp->contr, op->count);
1705	}	1585	}
1706	}	1586	}
1707		1587
1708	if (op->nrof) {	1588	if (op->nrof)
1709	return op;	1589	return op;
1710	} else {	1590	else
1711	free_object (op);	1591	{
		1592	op->destroy ();
1712	return NULL;	1593	return 0;
1713	}	1594	}
1714	}	1595	}
1715		1596
1716	/*	1597	/*
1717	* add_weight(object, weight) adds the specified weight to an object,	1598	* add_weight(object, weight) adds the specified weight to an object,
1718	* and also updates how much the environment(s) is/are carrying.	1599	* and also updates how much the environment(s) is/are carrying.
1719	*/	1600	*/
1720		1601
		1602	void
1721	void add_weight (object *op, signed long weight) {	1603	add_weight (object *op, signed long weight)
		1604	{
1722	while (op!=NULL) {	1605	while (op != NULL)
		1606	{
1723	if (op->type == CONTAINER) {	1607	if (op->type == CONTAINER)
1724	weight=(signed long)(weight*(100-op->stats.Str)/100);	1608	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1725	}	1609
1726	op->carrying+=weight;	1610	op->carrying += weight;
1727	op=op->env;	1611	op = op->env;
1728	}	1612	}
1729	}	1613	}
1730		1614
		1615	object *
		1616	insert_ob_in_ob (object *op, object *where)
		1617	{
		1618	if (!where)
		1619	{
		1620	char *dump = dump_object (op);
		1621	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1622	free (dump);
		1623	return op;
		1624	}
		1625
		1626	if (where->head)
		1627	{
		1628	LOG (llevDebug, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1629	where = where->head;
		1630	}
		1631
		1632	return where->insert (op);
		1633	}
		1634
1731	/*	1635	/*
1732	* insert_ob_in_ob(op,environment):	1636	* env->insert (op)
1733	* This function inserts the object op in the linked list	1637	* This function inserts the object op in the linked list
1734	* inside the object environment.	1638	* inside the object environment.
1735	*	1639	*
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	1640	* The function returns now pointer to inserted item, and return value can
1742	* be != op, if items are merged. -Tero	1641	* be != op, if items are merged. -Tero
1743	*/	1642	*/
1744		1643
1745	object *insert_ob_in_ob(object *op,object *where) {	1644	object *
		1645	object::insert (object *op)
		1646	{
1746	object *tmp, *otmp;	1647	object *tmp, *otmp;
1747		1648
1748	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1649	if (!QUERY_FLAG (op, FLAG_REMOVED))
1749	dump_object(op);	1650	op->remove ();
1750	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1651
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) {	1652	if (op->more)
		1653	{
1764	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1654	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1765	&op->name, op->count);
1766	return op;	1655	return op;
1767	}	1656	}
		1657
1768	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1658	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1769	CLEAR_FLAG(op, FLAG_REMOVED);	1659	CLEAR_FLAG (op, FLAG_REMOVED);
1770	if(op->nrof) {	1660	if (op->nrof)
		1661	{
1771	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1662	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1772	if ( CAN_MERGE(tmp,op) ) {	1663	if (object::can_merge (tmp, op))
		1664	{
1773	/* return the original object and remove inserted object	1665	/* return the original object and remove inserted object
1774	(client needs the original object) */	1666	(client needs the original object) */
1775	tmp->nrof += op->nrof;	1667	tmp->nrof += op->nrof;
1776	/* Weight handling gets pretty funky. Since we are adding to	1668	/* Weight handling gets pretty funky. Since we are adding to
1777	* tmp->nrof, we need to increase the weight.	1669	* tmp->nrof, we need to increase the weight.
1778	*/	1670	*/
1779	add_weight (where, op->weight*op->nrof);	1671	add_weight (this, op->weight * op->nrof);
1780	SET_FLAG(op, FLAG_REMOVED);	1672	SET_FLAG (op, FLAG_REMOVED);
1781	free_object(op); /* free the inserted object */	1673	op->destroy (); /* free the inserted object */
1782	op = tmp;	1674	op = tmp;
1783	remove_ob (op); /* and fix old object's links */	1675	op->remove (); /* and fix old object's links */
1784	CLEAR_FLAG(op, FLAG_REMOVED);	1676	CLEAR_FLAG (op, FLAG_REMOVED);
1785	break;	1677	break;
1786	}	1678	}
1787		1679
1788	/* I assume combined objects have no inventory	1680	/* I assume combined objects have no inventory
1789	* We add the weight - this object could have just been removed	1681	* We add the weight - this object could have just been removed
1790	* (if it was possible to merge). calling remove_ob will subtract	1682	* (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	1683	* the weight, so we need to add it in again, since we actually do
1792	* the linking below	1684	* the linking below
1793	*/	1685	*/
1794	add_weight (where, op->weight*op->nrof);	1686	add_weight (this, op->weight * op->nrof);
		1687	}
1795	} else	1688	else
1796	add_weight (where, (op->weight+op->carrying));	1689	add_weight (this, (op->weight + op->carrying));
1797		1690
1798	otmp=is_player_inv(where);	1691	otmp = this->in_player ();
1799	if (otmp&&otmp->contr!=NULL) {	1692	if (otmp && otmp->contr)
1800	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1693	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1801	fix_player(otmp);	1694	otmp->update_stats ();
1802	}
1803		1695
1804	op->map=NULL;	1696	op->map = 0;
1805	op->env=where;	1697	op->env = this;
1806	op->above=NULL;	1698	op->above = 0;
1807	op->below=NULL;	1699	op->below = 0;
1808	op->x=0,op->y=0;	1700	op->x = 0, op->y = 0;
1809		1701
1810	/* reset the light list and los of the players on the map */	1702	/* reset the light list and los of the players on the map */
1811	if((op->glow_radius!=0)&&where->map)	1703	if ((op->glow_radius != 0) && map)
1812	{	1704	{
1813	#ifdef DEBUG_LIGHTS	1705	#ifdef DEBUG_LIGHTS
1814	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1706	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1815	op->name);
1816	#endif /* DEBUG_LIGHTS */	1707	#endif /* DEBUG_LIGHTS */
1817	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1708	if (map->darkness)
		1709	update_all_los (map, x, y);
1818	}	1710	}
1819		1711
1820	/* Client has no idea of ordering so lets not bother ordering it here.	1712	/* Client has no idea of ordering so lets not bother ordering it here.
1821	* It sure simplifies this function...	1713	* It sure simplifies this function...
1822	*/	1714	*/
1823	if (where->inv==NULL)	1715	if (!inv)
1824	where->inv=op;	1716	inv = op;
1825	else {	1717	else
		1718	{
1826	op->below = where->inv;	1719	op->below = inv;
1827	op->below->above = op;	1720	op->below->above = op;
1828	where->inv = op;	1721	inv = op;
1829	}	1722	}
		1723
		1724	INVOKE_OBJECT (INSERT, this);
		1725
1830	return op;	1726	return op;
1831	}	1727	}
1832		1728
1833	/*	1729	/*
1834	* Checks if any objects has a move_type that matches objects	1730	* Checks if any objects has a move_type that matches objects
…		…
1849	* MSW 2001-07-08: Check all objects on space, not just those below	1745	* 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	1746	* object being inserted. insert_ob_in_map may not put new objects
1851	* on top.	1747	* on top.
1852	*/	1748	*/
1853		1749
		1750	int
1854	int check_move_on (object *op, object *originator)	1751	check_move_on (object *op, object *originator)
1855	{	1752	{
1856	object *tmp;	1753	object *tmp;
1857	tag_t tag;
1858	mapstruct *m=op->map;	1754	maptile *m = op->map;
1859	int x=op->x, y=op->y;	1755	int x = op->x, y = op->y;
		1756
1860	MoveType move_on, move_slow, move_block;	1757	MoveType move_on, move_slow, move_block;
1861		1758
1862	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1759	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1863	return 0;	1760	return 0;
1864		1761
1865	tag = op->count;
1866
1867	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1762	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);	1763	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);	1764	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1870		1765
1871	/* if nothing on this space will slow op down or be applied,	1766	/* 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	1767	* 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	1768	* is set, as lots of objects don't have it set - we treat that
1874	* as walking.	1769	* as walking.
1875	*/	1770	*/
1876	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1771	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1877	return 0;	1772	return 0;
1878		1773
1879	/* This is basically inverse logic of that below - basically,	1774	/* This is basically inverse logic of that below - basically,
1880	* if the object can avoid the move on or slow move, they do so,	1775	* 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	1776	* but can't do it if the alternate movement they are using is
1882	* blocked. Logic on this seems confusing, but does seem correct.	1777	* blocked. Logic on this seems confusing, but does seem correct.
1883	*/	1778	*/
1884	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1779	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;	1780	return 0;
1886		1781
1887	/* The objects have to be checked from top to bottom.	1782	/* The objects have to be checked from top to bottom.
1888	* Hence, we first go to the top:	1783	* Hence, we first go to the top:
1889	*/	1784	*/
1890		1785
1891	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1786	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp && tmp->above; tmp = tmp->above)
1892	tmp->above!=NULL; tmp=tmp->above) {	1787	{
1893	/* Trim the search when we find the first other spell effect	1788	/* Trim the search when we find the first other spell effect
1894	* this helps performance so that if a space has 50 spell objects,	1789	* this helps performance so that if a space has 50 spell objects,
1895	* we don't need to check all of them.	1790	* we don't need to check all of them.
1896	*/	1791	*/
1897	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1792	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1793	break;
		1794	}
		1795
		1796	for (; tmp; tmp = tmp->below)
1898	}	1797	{
1899	for(;tmp!=NULL; tmp=tmp->below) {	1798	if (tmp == op)
1900	if (tmp == op) continue; /* Can't apply yourself */	1799	continue; /* Can't apply yourself */
1901		1800
1902	/* Check to see if one of the movement types should be slowed down.	1801	/* 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	1802	* Second check makes sure that the movement types not being slowed
1904	* (~slow_move) is not blocked on this space - just because the	1803	* (~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	1804	* 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.	1805	* swim on that space, can't use it to avoid the penalty.
1907	*/	1806	*/
1908	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1807	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1808	{
1909	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1809	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)) {	1810	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1811	{
1912		1812
1913	float diff;	1813	float
1914
1915	diff = tmp->move_slow_penalty*FABS(op->speed);	1814	diff = tmp->move_slow_penalty * FABS (op->speed);
		1815
1916	if (op->type == PLAYER) {	1816	if (op->type == PLAYER)
1917	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1817	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))) {	1818	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1919	diff /= 4.0;	1819	diff /= 4.0;
1920	}	1820
1921	}
1922	op->speed_left -= diff;	1821	op->speed_left -= diff;
1923	}	1822	}
1924	}	1823	}
1925		1824
1926	/* Basically same logic as above, except now for actual apply. */	1825	/* Basically same logic as above, except now for actual apply. */
1927	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1826	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)) {	1827	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1930		1828	{
1931	move_apply(tmp, op, originator);	1829	move_apply (tmp, op, originator);
		1830
1932	if (was_destroyed (op, tag))	1831	if (op->destroyed ())
1933	return 1;	1832	return 1;
1934		1833
1935	/* what the person/creature stepped onto has moved the object	1834	/* what the person/creature stepped onto has moved the object
1936	* someplace new. Don't process any further - if we did,	1835	* someplace new. Don't process any further - if we did,
1937	* have a feeling strange problems would result.	1836	* have a feeling strange problems would result.
1938	*/	1837	*/
1939	if (op->map != m || op->x != x || op->y != y) return 0;	1838	if (op->map != m || op->x != x || op->y != y)
		1839	return 0;
1940	}	1840	}
1941	}	1841	}
		1842
1942	return 0;	1843	return 0;
1943	}	1844	}
1944		1845
1945	/*	1846	/*
1946	* present_arch(arch, map, x, y) searches for any objects with	1847	* present_arch(arch, map, x, y) searches for any objects with
1947	* a matching archetype at the given map and coordinates.	1848	* a matching archetype at the given map and coordinates.
1948	* The first matching object is returned, or NULL if none.	1849	* The first matching object is returned, or NULL if none.
1949	*/	1850	*/
1950		1851	object *
1951	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1852	present_arch (const archetype *at, maptile *m, int x, int y)
1952	object *tmp;	1853	{
1953	if(m==NULL || out_of_map(m,x,y)) {	1854	if (m == NULL || out_of_map (m, x, y))
		1855	{
1954	LOG(llevError,"Present_arch called outside map.\n");	1856	LOG (llevError, "Present_arch called outside map.\n");
1955	return NULL;	1857	return NULL;
1956	}	1858	}
		1859
1957	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1860	for (object *tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1958	if(tmp->arch == at)	1861	if (tmp->arch == at)
1959	return tmp;	1862	return tmp;
		1863
1960	return NULL;	1864	return NULL;
1961	}	1865	}
1962		1866
1963	/*	1867	/*
1964	* present(type, map, x, y) searches for any objects with	1868	* present(type, map, x, y) searches for any objects with
1965	* a matching type variable at the given map and coordinates.	1869	* a matching type variable at the given map and coordinates.
1966	* The first matching object is returned, or NULL if none.	1870	* The first matching object is returned, or NULL if none.
1967	*/	1871	*/
1968		1872	object *
1969	object *present(unsigned char type,mapstruct *m, int x,int y) {	1873	present (unsigned char type, maptile *m, int x, int y)
1970	object *tmp;	1874	{
1971	if(out_of_map(m,x,y)) {	1875	if (out_of_map (m, x, y))
		1876	{
1972	LOG(llevError,"Present called outside map.\n");	1877	LOG (llevError, "Present called outside map.\n");
1973	return NULL;	1878	return NULL;
1974	}	1879	}
		1880
1975	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1881	for (object *tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1976	if(tmp->type==type)	1882	if (tmp->type == type)
1977	return tmp;	1883	return tmp;
		1884
1978	return NULL;	1885	return NULL;
1979	}	1886	}
1980		1887
1981	/*	1888	/*
1982	* present_in_ob(type, object) searches for any objects with	1889	* present_in_ob(type, object) searches for any objects with
1983	* a matching type variable in the inventory of the given object.	1890	* a matching type variable in the inventory of the given object.
1984	* The first matching object is returned, or NULL if none.	1891	* The first matching object is returned, or NULL if none.
1985	*/	1892	*/
1986		1893	object *
1987	object *present_in_ob(unsigned char type, const object *op) {	1894	present_in_ob (unsigned char type, const object *op)
1988	object *tmp;	1895	{
1989	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1896	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1990	if(tmp->type==type)	1897	if (tmp->type == type)
1991	return tmp;	1898	return tmp;
		1899
1992	return NULL;	1900	return NULL;
1993	}	1901	}
1994		1902
1995	/*	1903	/*
1996	* present_in_ob (type, str, object) searches for any objects with	1904	* present_in_ob (type, str, object) searches for any objects with
…		…
2004	* str is the string to match against. Note that we match against	1912	* 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	1913	* 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	1914	* spell code can use one object type (force), but change it's name
2007	* to be unique.	1915	* to be unique.
2008	*/	1916	*/
2009		1917	object *
2010	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1918	present_in_ob_by_name (int type, const char *str, const object *op)
2011	object *tmp;	1919	{
2012
2013	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1920	for (object *tmp = op->inv; tmp; tmp = tmp->below)
2014	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1921	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
2015	return tmp;	1922	return tmp;
2016	}	1923
2017	return NULL;	1924	return 0;
2018	}	1925	}
2019		1926
2020	/*	1927	/*
2021	* present_arch_in_ob(archetype, object) searches for any objects with	1928	* present_arch_in_ob(archetype, object) searches for any objects with
2022	* a matching archetype in the inventory of the given object.	1929	* a matching archetype in the inventory of the given object.
2023	* The first matching object is returned, or NULL if none.	1930	* The first matching object is returned, or NULL if none.
2024	*/	1931	*/
2025		1932	object *
2026	object *present_arch_in_ob(const archetype *at, const object *op) {	1933	present_arch_in_ob (const archetype *at, const object *op)
2027	object *tmp;	1934	{
2028	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1935	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
2029	if( tmp->arch == at)	1936	if (tmp->arch == at)
2030	return tmp;	1937	return tmp;
		1938
2031	return NULL;	1939	return NULL;
2032	}	1940	}
2033		1941
2034	/*	1942	/*
2035	* activate recursively a flag on an object inventory	1943	* activate recursively a flag on an object inventory
2036	*/	1944	*/
		1945	void
2037	void flag_inv(object*op, int flag){	1946	flag_inv (object *op, int flag)
2038	object *tmp;	1947	{
2039	if(op->inv)	1948	if (op->inv)
2040	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1949	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1950	{
2041	SET_FLAG(tmp, flag);	1951	SET_FLAG (tmp, flag);
2042	flag_inv(tmp,flag);	1952	flag_inv (tmp, flag);
2043	}	1953	}
		1954	}
		1955
2044	}/*	1956	/*
2045	* desactivate recursively a flag on an object inventory	1957	* deactivate recursively a flag on an object inventory
2046	*/	1958	*/
		1959	void
2047	void unflag_inv(object*op, int flag){	1960	unflag_inv (object *op, int flag)
2048	object *tmp;	1961	{
2049	if(op->inv)	1962	if (op->inv)
2050	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1963	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1964	{
2051	CLEAR_FLAG(tmp, flag);	1965	CLEAR_FLAG (tmp, flag);
2052	unflag_inv(tmp,flag);	1966	unflag_inv (tmp, flag);
2053	}	1967	}
2054	}	1968	}
2055		1969
2056	/*	1970	/*
2057	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in	1971	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
2058	* all it's inventory (recursively).	1972	* all it's inventory (recursively).
2059	* If checksums are used, a player will get set_cheat called for	1973	* 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.	1974	* him/her-self and all object carried by a call to this function.
2061	*/	1975	*/
2062		1976	void
2063	void set_cheat(object *op) {	1977	set_cheat (object *op)
		1978	{
2064	SET_FLAG(op, FLAG_WAS_WIZ);	1979	SET_FLAG (op, FLAG_WAS_WIZ);
2065	flag_inv(op, FLAG_WAS_WIZ);	1980	flag_inv (op, FLAG_WAS_WIZ);
2066	}	1981	}
2067		1982
2068	/*	1983	/*
2069	* find_free_spot(object, map, x, y, start, stop) will search for	1984	* 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	1985	* 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	1999	* 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	2000	* 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	2001	* the archetype because that isn't correct if the monster has been
2087	* customized, changed states, etc.	2002	* customized, changed states, etc.
2088	*/	2003	*/
2089		2004	int
2090	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2005	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2006	{
2091	int i,index=0, flag;	2007	int index = 0, flag;
2092	static int altern[SIZEOFFREE];	2008	int altern[SIZEOFFREE];
2093		2009
2094	for(i=start;i<stop;i++) {	2010	for (int i = start; i < stop; i++)
		2011	{
2095	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2012	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2096	if(!flag)	2013	if (!flag)
2097	altern[index++]=i;	2014	altern [index++] = i;
2098		2015
2099	/* Basically, if we find a wall on a space, we cut down the search size.	2016	/* 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.	2017	* 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 -	2018	* 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	2019	* 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	2020	* spaces in all the other directions, this will reduce the search space
2104	* to only the spaces immediately surrounding the target area, and	2021	* to only the spaces immediately surrounding the target area, and
2105	* won't look 2 spaces south of the target space.	2022	* won't look 2 spaces south of the target space.
2106	*/	2023	*/
2107	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2024	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2108	stop=maxfree[i];	2025	stop = maxfree[i];
2109	}	2026	}
2110	if(!index) return -1;	2027
		2028	if (!index)
		2029	return -1;
		2030
2111	return altern[RANDOM()%index];	2031	return altern[RANDOM () % index];
2112	}	2032	}
2113		2033
2114	/*	2034	/*
2115	* find_first_free_spot(archetype, mapstruct, x, y) works like	2035	* find_first_free_spot(archetype, maptile, x, y) works like
2116	* find_free_spot(), but it will search max number of squares.	2036	* find_free_spot(), but it will search max number of squares.
2117	* But it will return the first available spot, not a random choice.	2037	* 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.	2038	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2119	*/	2039	*/
2120		2040	int
2121	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2041	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2122	int i;	2042	{
2123	for(i=0;i<SIZEOFFREE;i++) {	2043	for (int i = 0; i < SIZEOFFREE; i++)
2124	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2044	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2125	return i;	2045	return i;
2126	}	2046
2127	return -1;	2047	return -1;
2128	}	2048	}
2129		2049
2130	/*	2050	/*
2131	* The function permute(arr, begin, end) randomly reorders the array	2051	* The function permute(arr, begin, end) randomly reorders the array
2132	* arr[begin..end-1].	2052	* arr[begin..end-1].
		2053	* now uses a fisher-yates shuffle, old permute was broken
2133	*/	2054	*/
		2055	static void
2134	static void permute(int *arr, int begin, int end)	2056	permute (int *arr, int begin, int end)
2135	{	2057	{
2136	int i, j, tmp, len;	2058	arr += begin;
		2059	end -= begin;
2137		2060
2138	len = end-begin;	2061	while (--end)
2139	for(i = begin; i < end; i++)	2062	swap (arr [end], arr [RANDOM () % (end + 1)]);
2140	{
2141	j = begin+RANDOM()%len;
2142
2143	tmp = arr[i];
2144	arr[i] = arr[j];
2145	arr[j] = tmp;
2146	}
2147	}	2063	}
2148		2064
2149	/* new function to make monster searching more efficient, and effective!	2065	/* new function to make monster searching more efficient, and effective!
2150	* This basically returns a randomized array (in the passed pointer) of	2066	* 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	2067	* 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	2068	* 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	2069	* 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.	2070	* the 3x3 area will be searched, just not in a predictable order.
2155	*/	2071	*/
		2072	void
2156	void get_search_arr(int *search_arr)	2073	get_search_arr (int *search_arr)
2157	{	2074	{
2158	int i;	2075	int i;
2159		2076
2160	for(i = 0; i < SIZEOFFREE; i++)	2077	for (i = 0; i < SIZEOFFREE; i++)
2161	{
2162	search_arr[i] = i;	2078	search_arr[i] = i;
2163	}
2164		2079
2165	permute(search_arr, 1, SIZEOFFREE1+1);	2080	permute (search_arr, 1, SIZEOFFREE1 + 1);
2166	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2081	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2167	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2082	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2168	}	2083	}
2169		2084
2170	/*	2085	/*
2171	* find_dir(map, x, y, exclude) will search some close squares in the	2086	* find_dir(map, x, y, exclude) will search some close squares in the
2172	* given map at the given coordinates for live objects.	2087	* given map at the given coordinates for live objects.
…		…
2177	* Perhaps incorrectly, but I'm making the assumption that exclude	2092	* 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	2093	* 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	2094	* because we have to know what movement the thing looking to move
2180	* there is capable of.	2095	* there is capable of.
2181	*/	2096	*/
2182		2097	int
2183	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2098	find_dir (maptile *m, int x, int y, object *exclude)
		2099	{
2184	int i,max=SIZEOFFREE, mflags;	2100	int i, max = SIZEOFFREE, mflags;
		2101
2185	sint16 nx, ny;	2102	sint16 nx, ny;
2186	object *tmp;	2103	object *tmp;
2187	mapstruct *mp;	2104	maptile *mp;
		2105
2188	MoveType blocked, move_type;	2106	MoveType blocked, move_type;
2189		2107
2190	if (exclude && exclude->head) {	2108	if (exclude && exclude->head)
		2109	{
2191	exclude = exclude->head;	2110	exclude = exclude->head;
2192	move_type = exclude->move_type;	2111	move_type = exclude->move_type;
2193	} else {	2112	}
		2113	else
		2114	{
2194	/* If we don't have anything, presume it can use all movement types. */	2115	/* If we don't have anything, presume it can use all movement types. */
2195	move_type=MOVE_ALL;	2116	move_type = MOVE_ALL;
		2117	}
		2118
		2119	for (i = 1; i < max; i++)
2196	}	2120	{
2197
2198	for(i=1;i<max;i++) {
2199	mp = m;	2121	mp = m;
2200	nx = x + freearr_x[i];	2122	nx = x + freearr_x[i];
2201	ny = y + freearr_y[i];	2123	ny = y + freearr_y[i];
2202		2124
2203	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2125	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2126
2204	if (mflags & P_OUT_OF_MAP) {	2127	if (mflags & P_OUT_OF_MAP)
		2128	max = maxfree[i];
		2129	else
		2130	{
		2131	mapspace &ms = mp->at (nx, ny);
		2132
		2133	blocked = ms.move_block;
		2134
		2135	if ((move_type & blocked) == move_type)
2205	max = maxfree[i];	2136	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) {	2137	else if (mflags & P_IS_ALIVE)
2212	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2138	{
		2139	for (tmp = ms.bot; tmp; tmp = tmp->above)
2213	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2140	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2214	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2141	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2215	break;	2142	break;
2216	}	2143
2217	}
2218	if(tmp) {	2144	if (tmp)
2219	return freedir[i];	2145	return freedir[i];
2220	}
2221	}	2146	}
2222	}	2147	}
2223	}	2148	}
		2149
2224	return 0;	2150	return 0;
2225	}	2151	}
2226		2152
2227	/*	2153	/*
2228	* distance(object 1, object 2) will return the square of the	2154	* distance(object 1, object 2) will return the square of the
2229	* distance between the two given objects.	2155	* distance between the two given objects.
2230	*/	2156	*/
2231		2157	int
2232	int distance(const object *ob1, const object *ob2) {	2158	distance (const object *ob1, const object *ob2)
2233	int i;	2159	{
2234	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2160	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	}	2161	}
2238		2162
2239	/*	2163	/*
2240	* find_dir_2(delta-x,delta-y) will return a direction in which	2164	* 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	2165	* an object which has subtracted the x and y coordinates of another
2242	* object, needs to travel toward it.	2166	* object, needs to travel toward it.
2243	*/	2167	*/
2244		2168	int
2245	int find_dir_2(int x, int y) {	2169	find_dir_2 (int x, int y)
		2170	{
2246	int q;	2171	int q;
2247		2172
2248	if(y)	2173	if (y)
2249	q=x*100/y;	2174	q = x * 100 / y;
2250	else if (x)	2175	else if (x)
2251	q= -300*x;	2176	q = -300 * x;
2252	else	2177	else
2253	return 0;	2178	return 0;
2254		2179
2255	if(y>0) {	2180	if (y > 0)
		2181	{
2256	if(q < -242)	2182	if (q < -242)
2257	return 3 ;	2183	return 3;
2258	if (q < -41)	2184	if (q < -41)
2259	return 2 ;	2185	return 2;
2260	if (q < 41)	2186	if (q < 41)
2261	return 1 ;	2187	return 1;
2262	if (q < 242)	2188	if (q < 242)
2263	return 8 ;	2189	return 8;
2264	return 7 ;	2190	return 7;
2265	}	2191	}
2266		2192
2267	if (q < -242)	2193	if (q < -242)
2268	return 7 ;	2194	return 7;
2269	if (q < -41)	2195	if (q < -41)
2270	return 6 ;	2196	return 6;
2271	if (q < 41)	2197	if (q < 41)
2272	return 5 ;	2198	return 5;
2273	if (q < 242)	2199	if (q < 242)
2274	return 4 ;	2200	return 4;
2275		2201
2276	return 3 ;	2202	return 3;
2277	}	2203	}
2278		2204
2279	/*	2205	/*
2280	* absdir(int): Returns a number between 1 and 8, which represent	2206	* absdir(int): Returns a number between 1 and 8, which represent
2281	* the "absolute" direction of a number (it actually takes care of	2207	* the "absolute" direction of a number (it actually takes care of
2282	* "overflow" in previous calculations of a direction).	2208	* "overflow" in previous calculations of a direction).
2283	*/	2209	*/
2284		2210
		2211	int
2285	int absdir(int d) {	2212	absdir (int d)
2286	while(d<1) d+=8;	2213	{
2287	while(d>8) d-=8;	2214	while (d < 1)
		2215	d += 8;
		2216
		2217	while (d > 8)
		2218	d -= 8;
		2219
2288	return d;	2220	return d;
2289	}	2221	}
2290		2222
2291	/*	2223	/*
2292	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2224	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2293	* between two directions (which are expected to be absolute (see absdir())	2225	* between two directions (which are expected to be absolute (see absdir())
2294	*/	2226	*/
2295		2227
		2228	int
2296	int dirdiff(int dir1, int dir2) {	2229	dirdiff (int dir1, int dir2)
		2230	{
2297	int d;	2231	int d;
		2232
2298	d = abs(dir1 - dir2);	2233	d = abs (dir1 - dir2);
2299	if(d>4)	2234	if (d > 4)
2300	d = 8 - d;	2235	d = 8 - d;
		2236
2301	return d;	2237	return d;
2302	}	2238	}
2303		2239
2304	/* peterm:	2240	/* peterm:
2305	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2241	* 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	2244	* 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.	2245	* 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	2246	* Moved from spell_util.c to object.c with the other related direction
2311	* functions.	2247	* functions.
2312	*/	2248	*/
2313
2314	int reduction_dir[SIZEOFFREE][3] = {	2249	int reduction_dir[SIZEOFFREE][3] = {
2315	{0,0,0}, /* 0 */	2250	{0, 0, 0}, /* 0 */
2316	{0,0,0}, /* 1 */	2251	{0, 0, 0}, /* 1 */
2317	{0,0,0}, /* 2 */	2252	{0, 0, 0}, /* 2 */
2318	{0,0,0}, /* 3 */	2253	{0, 0, 0}, /* 3 */
2319	{0,0,0}, /* 4 */	2254	{0, 0, 0}, /* 4 */
2320	{0,0,0}, /* 5 */	2255	{0, 0, 0}, /* 5 */
2321	{0,0,0}, /* 6 */	2256	{0, 0, 0}, /* 6 */
2322	{0,0,0}, /* 7 */	2257	{0, 0, 0}, /* 7 */
2323	{0,0,0}, /* 8 */	2258	{0, 0, 0}, /* 8 */
2324	{8,1,2}, /* 9 */	2259	{8, 1, 2}, /* 9 */
2325	{1,2,-1}, /* 10 */	2260	{1, 2, -1}, /* 10 */
2326	{2,10,12}, /* 11 */	2261	{2, 10, 12}, /* 11 */
2327	{2,3,-1}, /* 12 */	2262	{2, 3, -1}, /* 12 */
2328	{2,3,4}, /* 13 */	2263	{2, 3, 4}, /* 13 */
2329	{3,4,-1}, /* 14 */	2264	{3, 4, -1}, /* 14 */
2330	{4,14,16}, /* 15 */	2265	{4, 14, 16}, /* 15 */
2331	{5,4,-1}, /* 16 */	2266	{5, 4, -1}, /* 16 */
2332	{4,5,6}, /* 17 */	2267	{4, 5, 6}, /* 17 */
2333	{6,5,-1}, /* 18 */	2268	{6, 5, -1}, /* 18 */
2334	{6,20,18}, /* 19 */	2269	{6, 20, 18}, /* 19 */
2335	{7,6,-1}, /* 20 */	2270	{7, 6, -1}, /* 20 */
2336	{6,7,8}, /* 21 */	2271	{6, 7, 8}, /* 21 */
2337	{7,8,-1}, /* 22 */	2272	{7, 8, -1}, /* 22 */
2338	{8,22,24}, /* 23 */	2273	{8, 22, 24}, /* 23 */
2339	{8,1,-1}, /* 24 */	2274	{8, 1, -1}, /* 24 */
2340	{24,9,10}, /* 25 */	2275	{24, 9, 10}, /* 25 */
2341	{9,10,-1}, /* 26 */	2276	{9, 10, -1}, /* 26 */
2342	{10,11,-1}, /* 27 */	2277	{10, 11, -1}, /* 27 */
2343	{27,11,29}, /* 28 */	2278	{27, 11, 29}, /* 28 */
2344	{11,12,-1}, /* 29 */	2279	{11, 12, -1}, /* 29 */
2345	{12,13,-1}, /* 30 */	2280	{12, 13, -1}, /* 30 */
2346	{12,13,14}, /* 31 */	2281	{12, 13, 14}, /* 31 */
2347	{13,14,-1}, /* 32 */	2282	{13, 14, -1}, /* 32 */
2348	{14,15,-1}, /* 33 */	2283	{14, 15, -1}, /* 33 */
2349	{33,15,35}, /* 34 */	2284	{33, 15, 35}, /* 34 */
2350	{16,15,-1}, /* 35 */	2285	{16, 15, -1}, /* 35 */
2351	{17,16,-1}, /* 36 */	2286	{17, 16, -1}, /* 36 */
2352	{18,17,16}, /* 37 */	2287	{18, 17, 16}, /* 37 */
2353	{18,17,-1}, /* 38 */	2288	{18, 17, -1}, /* 38 */
2354	{18,19,-1}, /* 39 */	2289	{18, 19, -1}, /* 39 */
2355	{41,19,39}, /* 40 */	2290	{41, 19, 39}, /* 40 */
2356	{19,20,-1}, /* 41 */	2291	{19, 20, -1}, /* 41 */
2357	{20,21,-1}, /* 42 */	2292	{20, 21, -1}, /* 42 */
2358	{20,21,22}, /* 43 */	2293	{20, 21, 22}, /* 43 */
2359	{21,22,-1}, /* 44 */	2294	{21, 22, -1}, /* 44 */
2360	{23,22,-1}, /* 45 */	2295	{23, 22, -1}, /* 45 */
2361	{45,47,23}, /* 46 */	2296	{45, 47, 23}, /* 46 */
2362	{23,24,-1}, /* 47 */	2297	{23, 24, -1}, /* 47 */
2363	{24,9,-1}}; /* 48 */	2298	{24, 9, -1}
		2299	}; /* 48 */
2364		2300
2365	/* Recursive routine to step back and see if we can	2301	/* Recursive routine to step back and see if we can
2366	* find a path to that monster that we found. If not,	2302	* find a path to that monster that we found. If not,
2367	* we don't bother going toward it. Returns 1 if we	2303	* we don't bother going toward it. Returns 1 if we
2368	* can see a direct way to get it	2304	* can see a direct way to get it
2369	* Modified to be map tile aware -.MSW	2305	* Modified to be map tile aware -.MSW
2370	*/	2306	*/
2371		2307	int
2372
2373	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2308	can_see_monsterP (maptile *m, int x, int y, int dir)
		2309	{
2374	sint16 dx, dy;	2310	sint16 dx, dy;
2375	int mflags;	2311	int mflags;
2376		2312
		2313	if (dir < 0)
2377	if(dir<0) return 0; /* exit condition: invalid direction */	2314	return 0; /* exit condition: invalid direction */
2378		2315
2379	dx = x + freearr_x[dir];	2316	dx = x + freearr_x[dir];
2380	dy = y + freearr_y[dir];	2317	dy = y + freearr_y[dir];
2381		2318
2382	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2319	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2383		2320
2384	/* This functional arguably was incorrect before - it was	2321	/* This functional arguably was incorrect before - it was
2385	* checking for P_WALL - that was basically seeing if	2322	* checking for P_WALL - that was basically seeing if
2386	* we could move to the monster - this is being more	2323	* we could move to the monster - this is being more
2387	* literal on if we can see it. To know if we can actually	2324	* 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	2325	* move to the monster, we'd need the monster passed in or
2389	* at least its move type.	2326	* at least its move type.
2390	*/	2327	*/
2391	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2328	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2329	return 0;
2392		2330
2393	/* yes, can see. */	2331	/* yes, can see. */
2394	if(dir < 9) return 1;	2332	if (dir < 9)
		2333	return 1;
		2334
2395	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2335	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2396	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2336	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2397	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2337	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2398	}	2338	}
2399		2339
2400
2401
2402	/*	2340	/*
2403	* can_pick(picker, item): finds out if an object is possible to be	2341	* 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	2342	* picked up by the picker. Returnes 1 if it can be
2405	* picked up, otherwise 0.	2343	* picked up, otherwise 0.
2406	*	2344	*
…		…
2408	* core dumps if they do.	2346	* core dumps if they do.
2409	*	2347	*
2410	* Add a check so we can't pick up invisible objects (0.93.8)	2348	* Add a check so we can't pick up invisible objects (0.93.8)
2411	*/	2349	*/
2412		2350
		2351	int
2413	int can_pick(const object *who, const object *item) {	2352	can_pick (const object *who, const object *item)
		2353	{
2414	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2354	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2415	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2355	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2416	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2356	!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	}	2357	}
2419
2420		2358
2421	/*	2359	/*
2422	* create clone from object to another	2360	* create clone from object to another
2423	*/	2361	*/
		2362	object *
2424	object *object_create_clone (object *asrc) {	2363	object_create_clone (object *asrc)
		2364	{
2425	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2365	object *dst = 0, *tmp, *src, *part, *prev, *item;
2426		2366
2427	if(!asrc) return NULL;	2367	if (!asrc)
		2368	return 0;
		2369
2428	src = asrc;	2370	src = asrc;
2429	if(src->head)	2371	if (src->head)
2430	src = src->head;	2372	src = src->head;
2431		2373
2432	prev = NULL;	2374	prev = 0;
2433	for(part = src; part; part = part->more) {	2375	for (part = src; part; part = part->more)
2434	tmp = get_object();	2376	{
2435	copy_object(part,tmp);	2377	tmp = part->clone ();
2436	tmp->x -= src->x;	2378	tmp->x -= src->x;
2437	tmp->y -= src->y;	2379	tmp->y -= src->y;
		2380
2438	if(!part->head) {	2381	if (!part->head)
		2382	{
2439	dst = tmp;	2383	dst = tmp;
2440	tmp->head = NULL;
2441	} else {
2442	tmp->head = dst;	2384	tmp->head = 0;
2443	}	2385	}
		2386	else
		2387	tmp->head = dst;
		2388
2444	tmp->more = NULL;	2389	tmp->more = 0;
		2390
2445	if(prev)	2391	if (prev)
2446	prev->more = tmp;	2392	prev->more = tmp;
		2393
2447	prev = tmp;	2394	prev = tmp;
2448	}	2395	}
2449	/*** copy inventory ***/	2396
2450	for(item = src->inv; item; item = item->below) {	2397	for (item = src->inv; item; item = item->below)
2451	(void) insert_ob_in_ob(object_create_clone(item),dst);	2398	insert_ob_in_ob (object_create_clone (item), dst);
2452	}
2453		2399
2454	return dst;	2400	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	}	2401	}
2464		2402
2465	/* GROS - Creates an object using a string representing its content. */	2403	/* 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 */	2404	/* 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, */	2405	/* 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. */	2406	/* 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. */	2407	/* Remember not to use load_object_str in a time-critical situation. */
2470	/* Also remember that multiparts objects are not supported for now. */	2408	/* Also remember that multiparts objects are not supported for now. */
2471		2409	object *
2472	object* load_object_str(const char *obstr)	2410	load_object_str (const char *obstr)
2473	{	2411	{
2474	object *op;	2412	object *op;
2475	char filename[MAX_BUF];	2413	char filename[MAX_BUF];
		2414
2476	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2415	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2477		2416
2478	FILE *tempfile=fopen(filename,"w");	2417	FILE *tempfile = fopen (filename, "w");
		2418
2479	if (tempfile == NULL)	2419	if (tempfile == NULL)
2480	{	2420	{
2481	LOG(llevError,"Error - Unable to access load object temp file\n");	2421	LOG (llevError, "Error - Unable to access load object temp file\n");
2482	return NULL;	2422	return NULL;
2483	};	2423	}
		2424
2484	fprintf(tempfile,obstr);	2425	fprintf (tempfile, obstr);
2485	fclose(tempfile);	2426	fclose (tempfile);
2486		2427
2487	op=get_object();	2428	op = object::create ();
2488		2429
2489	object_thawer thawer (filename);	2430	object_thawer thawer (filename);
		2431
2490	if (thawer)	2432	if (thawer)
2491	load_object(thawer,op,LO_NEWFILE,0);	2433	load_object (thawer, op, 0);
		2434
2492	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2435	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2493	CLEAR_FLAG(op,FLAG_REMOVED);	2436	CLEAR_FLAG (op, FLAG_REMOVED);
2494		2437
2495	return op;	2438	return op;
2496	}	2439	}
2497		2440
2498	/* This returns the first object in who's inventory that	2441	/* This returns the first object in who's inventory that
2499	* has the same type and subtype match.	2442	* has the same type and subtype match.
2500	* returns NULL if no match.	2443	* returns NULL if no match.
2501	*/	2444	*/
		2445	object *
2502	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2446	find_obj_by_type_subtype (const object *who, int type, int subtype)
2503	{	2447	{
2504	object *tmp;
2505
2506	for (tmp=who->inv; tmp; tmp=tmp->below)	2448	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2507	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2449	if (tmp->type == type && tmp->subtype == subtype)
		2450	return tmp;
2508		2451
2509	return NULL;	2452	return 0;
2510	}	2453	}
2511		2454
2512	/* If ob has a field named key, return the link from the list,	2455	/* If ob has a field named key, return the link from the list,
2513	* otherwise return NULL.	2456	* otherwise return NULL.
2514	*	2457	*
2515	* key must be a passed in shared string - otherwise, this won't	2458	* key must be a passed in shared string - otherwise, this won't
2516	* do the desired thing.	2459	* do the desired thing.
2517	*/	2460	*/
		2461	key_value *
2518	key_value * get_ob_key_link(const object * ob, const char * key) {	2462	get_ob_key_link (const object *ob, const char *key)
2519	key_value * link;	2463	{
2520
2521	for (link = ob->key_values; link != NULL; link = link->next) {	2464	for (key_value *link = ob->key_values; link; link = link->next)
2522	if (link->key == key) {	2465	if (link->key == key)
2523	return link;	2466	return link;
2524	}	2467
2525	}	2468	return 0;
2526		2469	}
2527	return NULL;
2528	}
2529		2470
2530	/*	2471	/*
2531	* Returns the value of op has an extra_field for key, or NULL.	2472	* Returns the value of op has an extra_field for key, or NULL.
2532	*	2473	*
2533	* The argument doesn't need to be a shared string.	2474	* The argument doesn't need to be a shared string.
2534	*	2475	*
2535	* The returned string is shared.	2476	* The returned string is shared.
2536	*/	2477	*/
		2478	const char *
2537	const char * get_ob_key_value(const object * op, const char * const key) {	2479	get_ob_key_value (const object *op, const char *const key)
		2480	{
2538	key_value * link;	2481	key_value *link;
2539	const char * canonical_key;	2482	shstr_cmp canonical_key (key);
		2483
		2484	if (!canonical_key)
2540		2485	{
2541	canonical_key = shstr::find (key);
2542
2543	if (canonical_key == NULL) {
2544	/* 1. There being a field named key on any object	2486	/* 1. There being a field named key on any object
2545	* implies there'd be a shared string to find.	2487	* implies there'd be a shared string to find.
2546	* 2. Since there isn't, no object has this field.	2488	* 2. Since there isn't, no object has this field.
2547	* 3. Therefore, *this* object doesn't have this field.	2489	* 3. Therefore, *this* object doesn't have this field.
2548	*/	2490	*/
2549	return NULL;	2491	return 0;
2550	}	2492	}
2551		2493
2552	/* This is copied from get_ob_key_link() above -	2494	/* This is copied from get_ob_key_link() above -
2553	* only 4 lines, and saves the function call overhead.	2495	* only 4 lines, and saves the function call overhead.
2554	*/	2496	*/
2555	for (link = op->key_values; link != NULL; link = link->next) {	2497	for (link = op->key_values; link; link = link->next)
2556	if (link->key == canonical_key) {	2498	if (link->key == canonical_key)
2557	return link->value;	2499	return link->value;
2558	}	2500
2559	}	2501	return 0;
2560	return NULL;
2561	}	2502	}
2562		2503
2563		2504
2564	/*	2505	/*
2565	* Updates the canonical_key in op to value.	2506	* Updates the canonical_key in op to value.
…		…
2569	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2510	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2570	* keys.	2511	* keys.
2571	*	2512	*
2572	* Returns TRUE on success.	2513	* Returns TRUE on success.
2573	*/	2514	*/
		2515	int
2574	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2516	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2517	{
2575	key_value * field = NULL, *last=NULL;	2518	key_value *field = NULL, *last = NULL;
2576		2519
2577	for (field=op->key_values; field != NULL; field=field->next) {	2520	for (field = op->key_values; field != NULL; field = field->next)
		2521	{
2578	if (field->key != canonical_key) {	2522	if (field->key != canonical_key)
		2523	{
2579	last = field;	2524	last = field;
2580	continue;	2525	continue;
2581	}	2526	}
2582		2527
2583	if (value)	2528	if (value)
2584	field->value = value;	2529	field->value = value;
2585	else {	2530	else
		2531	{
2586	/* Basically, if the archetype has this key set,	2532	/* Basically, if the archetype has this key set,
2587	* we need to store the null value so when we save	2533	* we need to store the null value so when we save
2588	* it, we save the empty value so that when we load,	2534	* it, we save the empty value so that when we load,
2589	* we get this value back again.	2535	* we get this value back again.
2590	*/	2536	*/
2591	if (get_ob_key_link (&op->arch->clone, canonical_key))	2537	if (get_ob_key_link (&op->arch->clone, canonical_key))
2592	field->value = 0;	2538	field->value = 0;
		2539	else
		2540	{
		2541	if (last)
		2542	last->next = field->next;
2593	else	2543	else
2594	{
2595	if (last) last->next = field->next;
2596	else op->key_values = field->next;	2544	op->key_values = field->next;
2597		2545
2598	delete field;	2546	delete field;
2599	}	2547	}
2600	}	2548	}
2601	return TRUE;	2549	return TRUE;
2602	}	2550	}
2603	/* IF we get here, key doesn't exist */	2551	/* IF we get here, key doesn't exist */
2604		2552
2605	/* No field, we'll have to add it. */	2553	/* No field, we'll have to add it. */
2606		2554
2607	if (!add_key) {	2555	if (!add_key)
2608	return FALSE;	2556	return FALSE;
2609	}	2557
2610	/* There isn't any good reason to store a null	2558	/* There isn't any good reason to store a null
2611	* value in the key/value list. If the archetype has	2559	* value in the key/value list. If the archetype has
2612	* this key, then we should also have it, so shouldn't	2560	* this key, then we should also have it, so shouldn't
2613	* be here. If user wants to store empty strings,	2561	* be here. If user wants to store empty strings,
2614	* should pass in ""	2562	* should pass in ""
2615	*/	2563	*/
2616	if (value == NULL) return TRUE;	2564	if (value == NULL)
2617
2618	field = new key_value;
2619
2620	field->key = canonical_key;
2621	field->value = value;
2622	/* Usual prepend-addition. */
2623	field->next = op->key_values;
2624	op->key_values = field;
2625
2626	return TRUE;	2565	return TRUE;
		2566
		2567	field = new key_value;
		2568
		2569	field->key = canonical_key;
		2570	field->value = value;
		2571	/* Usual prepend-addition. */
		2572	field->next = op->key_values;
		2573	op->key_values = field;
		2574
		2575	return TRUE;
2627	}	2576	}
2628		2577
2629	/*	2578	/*
2630	* Updates the key in op to value.	2579	* Updates the key in op to value.
2631	*	2580	*
…		…
2633	* and not add new ones.	2582	* and not add new ones.
2634	* In general, should be little reason FALSE is ever passed in for add_key	2583	* In general, should be little reason FALSE is ever passed in for add_key
2635	*	2584	*
2636	* Returns TRUE on success.	2585	* Returns TRUE on success.
2637	*/	2586	*/
		2587	int
2638	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2588	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2639	{	2589	{
2640	shstr key_ (key);	2590	shstr key_ (key);
		2591
2641	return set_ob_key_value_s (op, key_, value, add_key);	2592	return set_ob_key_value_s (op, key_, value, add_key);
2642	}	2593	}
		2594
		2595	object::depth_iterator::depth_iterator (object *container)
		2596	: iterator_base (container)
		2597	{
		2598	while (item->inv)
		2599	item = item->inv;
		2600	}
		2601
		2602	void
		2603	object::depth_iterator::next ()
		2604	{
		2605	if (item->below)
		2606	{
		2607	item = item->below;
		2608
		2609	while (item->inv)
		2610	item = item->inv;
		2611	}
		2612	else
		2613	item = item->env;
		2614	}
		2615
		2616	// return a suitable string describing an objetc in enough detail to find it
		2617	const char *
		2618	object::debug_desc (char *info) const
		2619	{
		2620	char info2[256 * 3];
		2621	char *p = info;
		2622
		2623	p += snprintf (p, 256, "%d=\"%s%s%s\"",
		2624	count,
		2625	&name,
		2626	title ? " " : "",
		2627	title ? (const char *)title : "");
		2628
		2629	if (env)
		2630	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2631
		2632	if (map)
		2633	p += snprintf (p, 256, "(on %s@%d+%d)", map->path, x, y);
		2634
		2635	return info;
		2636	}
		2637
		2638	const char *
		2639	object::debug_desc () const
		2640	{
		2641	static char info[256 * 3];
		2642	return debug_desc (info);
		2643	}
		2644

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