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Comparing deliantra/server/common/object.C (file contents):
Revision 1.15 by root, Mon Sep 4 13:55:54 2006 UTC vs.
Revision 1.101 by root, Mon Jan 1 17:30:33 2007 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.15 2006/09/04 13:55:54 root 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>
		34
		35	#include <bitset>
		36
42	int nrofallocobjects = 0;	37	int nrofallocobjects = 0;
		38	static UUID uuid;
		39	const uint64 UUID_SKIP = 1<<19;
43		40
44	object *objects; /* Pointer to the list of used objects */
45	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 */
46		42
47	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,
48	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	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
50	short freearr_y[SIZEOFFREE]=	45	};
51	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	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,
52	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	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
53	int maxfree[SIZEOFFREE]=	48	};
54	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	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,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	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	};
56	int freedir[SIZEOFFREE]= {	52	int freedir[SIZEOFFREE] = {
57	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	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,
58	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	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	};
59		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	}
60		133
61	/* 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
62	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	{
63	key_value * wants_field;	138	key_value *wants_field;
64		139
65	/* 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
66	* 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
67	* different structure or at least keep the lists sorted...	142	* different structure or at least keep the lists sorted...
68	*/	143	*/
69		144
70	/* For each field in wants, */	145	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	146	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		147	{
72	key_value * has_field;	148	key_value *has_field;
73		149
74	/* Look for a field in has with the same key. */	150	/* Look for a field in has with the same key. */
75	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)
76		154	{
77	if (has_field == NULL) {
78	/* No field with that name. */	155	/* No field with that name. */
79	return FALSE;	156	return FALSE;
80	}
81		157	}
		158
82	/* Found the matching field. */	159	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {	160	if (has_field->value != wants_field->value)
		161	{
84	/* 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. */
85	return FALSE;	163	return FALSE;
86	}	164	}
87		165
88	/* 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. */
89	}
90		167	}
		168
91	/* 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. */
92	return TRUE;	170	return TRUE;
93	}	171	}
94		172
95	/* 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
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	175	compare_ob_value_lists (const object *ob1, const object *ob2)
		176	{
97	/* 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,
98	* so we need to run the comparison *twice*. :(	178	* so we need to run the comparison *twice*. :(
99	*/	179	*/
100	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);
101	}	181	}
102		182
103	/* 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
104	* they can be merged together.	184	* they can be merged together.
105	*	185	*
106	* 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
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	187	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	188	* reduce this to the same efficiency.
109	*	189	*
110	* Check nrof variable *before* calling CAN_MERGE()	190	* Check nrof variable *before* calling can_merge()
111	*	191	*
112	* Improvements made with merge: Better checking on potion, and also	192	* Improvements made with merge: Better checking on potion, and also
113	* check weight	193	* check weight
114	*/	194	*/
115		195	bool object::can_merge_slow (object *ob1, object *ob2)
116	int CAN_MERGE(object *ob1, object *ob2) {	196	{
117
118	/* A couple quicksanity checks */	197	/* A couple quicksanity checks */
119	if ((ob1 == ob2) || (ob1->type != ob2->type)) return 0;	198	if (ob1 == ob2
		199	|| ob1->type != ob2->type
		200	|| ob1->speed != ob2->speed
		201	|| ob1->value != ob2->value
		202	|| ob1->name != ob2->name)
		203	return 0;
120		204
121	if (ob1->speed != ob2->speed) return 0;	205	//TODO: this ain't working well, use nicer and correct overflow check
122	/* Note sure why the following is the case - either the object has to	206	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
123	* be animated or have a very low speed. Is this an attempted monster	207	* value could not be stored in a sint32 (which unfortunately sometimes is
124	* check?	208	* used to store nrof).
125	*/	209	*/
126	if (!QUERY_FLAG(ob1,FLAG_ANIMATE) && FABS((ob1)->speed) > MIN_ACTIVE_SPEED)	210	if (ob1->nrof + ob2->nrof >= 1UL << 31)
		211	return 0;
		212
		213	/* If the objects have been identified, set the BEEN_APPLIED flag.
		214	* This is to the comparison of the flags below will be OK. We
		215	* just can't ignore the been applied or identified flags, as they
		216	* are not equal - just if it has been identified, the been_applied
		217	* flags lose any meaning.
		218	*/
		219	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
		220	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
		221
		222	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
		223	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
		224
		225	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
		226	|| ob1->arch != ob2->arch
		227	|| ob1->name != ob2->name
		228	|| ob1->title != ob2->title
		229	|| ob1->msg != ob2->msg
		230	|| ob1->weight != ob2->weight
		231	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		232	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
		233	|| ob1->attacktype != ob2->attacktype
		234	|| ob1->magic != ob2->magic
		235	|| ob1->slaying != ob2->slaying
		236	|| ob1->skill != ob2->skill
		237	|| ob1->value != ob2->value
		238	|| ob1->animation_id != ob2->animation_id
		239	|| ob1->client_type != ob2->client_type
		240	|| ob1->materialname != ob2->materialname
		241	|| ob1->lore != ob2->lore
		242	|| ob1->subtype != ob2->subtype
		243	|| ob1->move_type != ob2->move_type
		244	|| ob1->move_block != ob2->move_block
		245	|| ob1->move_allow != ob2->move_allow
		246	|| ob1->move_on != ob2->move_on
		247	|| ob1->move_off != ob2->move_off
		248	|| ob1->move_slow != ob2->move_slow
		249	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
		250	return 0;
		251
		252	/* This is really a spellbook check - really, we should
		253	* check all objects in the inventory.
		254	*/
		255	if (ob1->inv || ob2->inv)
		256	{
		257	/* if one object has inventory but the other doesn't, not equiv */
		258	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
127	return 0;	259	return 0;
128		260
129	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	261	/* Now check to see if the two inventory objects could merge */
130	* value could not be stored in a sint32 (which unfortunately sometimes is	262	if (!object::can_merge (ob1->inv, ob2->inv))
131	* used to store nrof).
132	*/
133	if (ob1->nrof+ob2->nrof >= 1UL<<31)
134	return 0;	263	return 0;
135		264
136	/* This is really a spellbook check - really, we should
137	* check all objects in the inventory.
138	*/
139	if (ob1->inv || ob2->inv) {
140	/* if one object has inventory but the other doesn't, not equiv */
141	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv)) return 0;
142
143	/* Now check to see if the two inventory objects could merge */
144	if (!CAN_MERGE(ob1->inv, ob2->inv)) return 0;
145
146	/* inventory ok - still need to check rest of this object to see	265	/* inventory ok - still need to check rest of this object to see
147	* if it is valid.	266	* if it is valid.
148	*/	267	*/
149	}	268	}
150		269
151	/* If the objects have been identified, set the BEEN_APPLIED flag.
152	* This is to the comparison of the flags below will be OK. We
153	* just can't ignore the been applied or identified flags, as they
154	* are not equal - just if it has been identified, the been_applied
155	* flags lose any meaning.
156	*/
157	if (QUERY_FLAG(ob1, FLAG_IDENTIFIED))
158	SET_FLAG(ob1, FLAG_BEEN_APPLIED);
159
160	if (QUERY_FLAG(ob2, FLAG_IDENTIFIED))
161	SET_FLAG(ob2, FLAG_BEEN_APPLIED);
162
163
164	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
165	* being locked in inventory should prevent merging.
166	* 0x4 in flags3 is CLIENT_SENT
167	*/
168	if ((ob1->arch != ob2->arch) ||
169	(ob1->flags[0] != ob2->flags[0]) ||
170	(ob1->flags[1] != ob2->flags[1]) ||
171	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~ 0x400000)) ||
172	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
173	(ob1->name != ob2->name) ||
174	(ob1->title != ob2->title) ||
175	(ob1->msg != ob2->msg) ||
176	(ob1->weight != ob2->weight) ||
177	(memcmp(&ob1->resist, &ob2->resist, sizeof(ob1->resist))!=0) ||
178	(memcmp(&ob1->stats, &ob2->stats, sizeof(ob1->stats))!=0) ||
179	(ob1->attacktype != ob2->attacktype) ||
180	(ob1->magic != ob2->magic) ||
181	(ob1->slaying != ob2->slaying) ||
182	(ob1->skill != ob2->skill) ||
183	(ob1->value != ob2->value) ||
184	(ob1->animation_id != ob2->animation_id) ||
185	(ob1->client_type != ob2->client_type) ||
186	(ob1->materialname != ob2->materialname) ||
187	(ob1->lore != ob2->lore) ||
188	(ob1->subtype != ob2->subtype) ||
189	(ob1->move_type != ob2->move_type) ||
190	(ob1->move_block != ob2->move_block) ||
191	(ob1->move_allow != ob2->move_allow) ||
192	(ob1->move_on != ob2->move_on) ||
193	(ob1->move_off != ob2->move_off) ||
194	(ob1->move_slow != ob2->move_slow) ||
195	(ob1->move_slow_penalty != ob2->move_slow_penalty)
196	)
197	return 0;
198
199	/* Don't merge objects that are applied. With the new 'body' code,	270	/* Don't merge objects that are applied. With the new 'body' code,
200	* it is possible for most any character to have more than one of	271	* it is possible for most any character to have more than one of
201	* some items equipped, and we don't want those to merge.	272	* some items equipped, and we don't want those to merge.
202	*/	273	*/
203	if (QUERY_FLAG(ob1, FLAG_APPLIED) || QUERY_FLAG(ob2, FLAG_APPLIED))	274	if (QUERY_FLAG (ob1, FLAG_APPLIED) || QUERY_FLAG (ob2, FLAG_APPLIED))
		275	return 0;
		276
		277	/* Note sure why the following is the case - either the object has to
		278	* be animated or have a very low speed. Is this an attempted monster
		279	* check?
		280	*/
		281	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
		282	return 0;
		283
		284	switch (ob1->type)
		285	{
		286	case SCROLL:
		287	if (ob1->level != ob2->level)
		288	return 0;
		289	break;
		290	}
		291
		292	if (ob1->key_values != NULL || ob2->key_values != NULL)
		293	{
		294	/* At least one of these has key_values. */
		295	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
		296	/* One has fields, but the other one doesn't. */
204	return 0;	297	return 0;
205
206	switch (ob1->type) {
207	case SCROLL:
208	if (ob1->level != ob2->level) return 0;
209	break;
210
211	}
212	if (ob1->key_values != NULL || ob2->key_values != NULL) {
213	/* At least one of these has key_values. */
214	if ((ob1->key_values == NULL) != (ob2->key_values == NULL)) {
215	/* One has fields, but the other one doesn't. */
216	return 0;
217	} else if (!compare_ob_value_lists(ob1, ob2)) {	298	else if (!compare_ob_value_lists (ob1, ob2))
218	return 0;	299	return 0;
219	}	300	}
		301
		302	//TODO: generate an event or call into perl for additional checks
		303	if (ob1->self || ob2->self)
220	}	304	{
		305	ob1->optimise ();
		306	ob2->optimise ();
221		307
		308	if (ob1->self || ob2->self)
		309	return 0;
		310	}
		311
222	/* Everything passes, must be OK. */	312	/* Everything passes, must be OK. */
223	return 1;	313	return 1;
224	}	314	}
225		315
226	/*	316	/*
227	* sum_weight() is a recursive function which calculates the weight	317	* sum_weight() is a recursive function which calculates the weight
228	* an object is carrying. It goes through in figures out how much	318	* an object is carrying. It goes through in figures out how much
229	* containers are carrying, and sums it up.	319	* containers are carrying, and sums it up.
230	*/	320	*/
231	signed long sum_weight(object *op) {	321	long
		322	sum_weight (object *op)
		323	{
232	signed long sum;	324	long sum;
233	object *inv;	325	object *inv;
		326
234	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	327	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		328	{
235	if (inv->inv)	329	if (inv->inv)
236	sum_weight(inv);	330	sum_weight (inv);
237	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	331	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
238	}	332	}
		333
239	if (op->type == CONTAINER && op->stats.Str)	334	if (op->type == CONTAINER && op->stats.Str)
240	sum = (sum * (100 - op->stats.Str))/100;	335	sum = (sum * (100 - op->stats.Str)) / 100;
		336
241	if(op->carrying != sum)	337	if (op->carrying != sum)
242	op->carrying = sum;	338	op->carrying = sum;
		339
243	return sum;	340	return sum;
244	}	341	}
245		342
246	/**	343	/**
247	* Return the outermost environment object for a given object.	344	* Return the outermost environment object for a given object.
248	*/	345	*/
249		346
		347	object *
250	object *object_get_env_recursive (object *op) {	348	object_get_env_recursive (object *op)
		349	{
251	while (op->env != NULL)	350	while (op->env != NULL)
252	op = op->env;	351	op = op->env;
253	return op;	352	return op;
254	}
255
256	/*
257	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
258	* a better check. We basically keeping traversing up until we can't
259	* or find a player.
260	*/
261
262	object *is_player_inv (object *op) {
263	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
264	if (op->env==op)
265	op->env = NULL;
266	return op;
267	}	353	}
268		354
269	/*	355	/*
270	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	356	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
271	* Some error messages.	357	* Some error messages.
272	* The result of the dump is stored in the static global errmsg array.	358	* The result of the dump is stored in the static global errmsg array.
273	*/	359	*/
274		360
275	void dump_object2(object *op) {	361	char *
276	errmsg[0] = 0;
277	return;
278	//TODO//D#d#
279	#if 0
280	char *cp;
281	/* object *tmp;*/
282
283	if(op->arch!=NULL) {
284	strcat(errmsg,"arch ");
285	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
286	strcat(errmsg,"\n");
287	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
288	strcat(errmsg,cp);
289	#if 0
290	/* Don't dump player diffs - they are too long, mostly meaningless, and
291	* will overflow the buffer.
292	* Changed so that we don't dump inventory either. This may
293	* also overflow the buffer.
294	*/
295	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
296	strcat(errmsg,cp);
297	for (tmp=op->inv; tmp; tmp=tmp->below)
298	dump_object2(tmp);
299	#endif
300	strcat(errmsg,"end\n");
301	} else {
302	strcat(errmsg,"Object ");
303	if (op->name==NULL) strcat(errmsg, "(null)");
304	else strcat(errmsg,op->name);
305	strcat(errmsg,"\n");
306	#if 0
307	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
308	strcat(errmsg,cp);
309	for (tmp=op->inv; tmp; tmp=tmp->below)
310	dump_object2(tmp);
311	#endif
312	strcat(errmsg,"end\n");
313	}
314	#endif
315	}
316
317	/*
318	* Dumps an object. Returns output in the static global errmsg array.
319	*/
320
321	void dump_object(object *op) {	362	dump_object (object *op)
322	if(op==NULL) {	363	{
323	strcpy(errmsg,"[NULL pointer]");	364	if (!op)
324	return;	365	return strdup ("[NULLOBJ]");
325	}
326	errmsg[0]='\0';
327	dump_object2(op);
328	}
329		366
330	void dump_all_objects(void) {	367	object_freezer freezer;
331	object *op;	368	save_object (freezer, op, 1);
332	for(op=objects;op!=NULL;op=op->next) {	369	return freezer.as_string ();
333	dump_object(op);
334	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
335	}
336	}	370	}
337		371
338	/*	372	/*
339	* get_nearest_part(multi-object, object 2) returns the part of the	373	* get_nearest_part(multi-object, object 2) returns the part of the
340	* multi-object 1 which is closest to the second object.	374	* multi-object 1 which is closest to the second object.
341	* If it's not a multi-object, it is returned.	375	* If it's not a multi-object, it is returned.
342	*/	376	*/
343		377
		378	object *
344	object *get_nearest_part(object *op, const object *pl) {	379	get_nearest_part (object *op, const object *pl)
		380	{
345	object *tmp,*closest;	381	object *tmp, *closest;
346	int last_dist,i;	382	int last_dist, i;
		383
347	if(op->more==NULL)	384	if (op->more == NULL)
348	return op;	385	return op;
349	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	386	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
350	if((i=distance(tmp,pl))<last_dist)	387	if ((i = distance (tmp, pl)) < last_dist)
351	closest=tmp,last_dist=i;	388	closest = tmp, last_dist = i;
352	return closest;	389	return closest;
353	}	390	}
354		391
355	/*	392	/*
356	* Returns the object which has the count-variable equal to the argument.	393	* Returns the object which has the count-variable equal to the argument.
357	*/	394	*/
358		395
		396	object *
359	object *find_object(tag_t i) {	397	find_object (tag_t i)
360	object *op;	398	{
361	for(op=objects;op!=NULL;op=op->next)	399	for (object *op = object::first; op; op = op->next)
362	if(op->count==i)	400	if (op->count == i)
363	break;	401	return op;
		402
364	return op;	403	return 0;
365	}	404	}
366		405
367	/*	406	/*
368	* Returns the first object which has a name equal to the argument.	407	* Returns the first object which has a name equal to the argument.
369	* Used only by the patch command, but not all that useful.	408	* Used only by the patch command, but not all that useful.
370	* Enables features like "patch <name-of-other-player> food 999"	409	* Enables features like "patch <name-of-other-player> food 999"
371	*/	410	*/
372		411
		412	object *
373	object *find_object_name(const char *str) {	413	find_object_name (const char *str)
374	const char *name = shstr::find (str);	414	{
		415	shstr_cmp str_ (str);
375	object *op;	416	object *op;
		417
376	for(op=objects;op!=NULL;op=op->next)	418	for (op = object::first; op != NULL; op = op->next)
377	if(&op->name == name)	419	if (op->name == str_)
378	break;	420	break;
379		421
380	return op;	422	return op;
381	}	423	}
382		424
		425	void
383	void free_all_object_data ()	426	free_all_object_data ()
384	{	427	{
385	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	428	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
386	}
387
388	/*
389	* Returns the object which this object marks as being the owner.
390	* A id-scheme is used to avoid pointing to objects which have been
391	* freed and are now reused. If this is detected, the owner is
392	* set to NULL, and NULL is returned.
393	* Changed 2004-02-12 - if the player is setting at the play again
394	* prompt, he is removed, and we don't want to treat him as an owner of
395	* anything, so check removed flag. I don't expect that this should break
396	* anything - once an object is removed, it is basically dead anyways.
397	*/
398
399	object *get_owner(object *op) {
400	if(op->owner==NULL)
401	return NULL;
402
403	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
404	op->owner->count==op->ownercount)
405	return op->owner;
406
407	op->owner=NULL;
408	op->ownercount=0;
409	return NULL;
410	}
411
412	void clear_owner(object *op)
413	{
414	if (!op) return;
415
416	if (op->owner && op->ownercount == op->owner->count)
417	op->owner->refcount--;
418
419	op->owner = NULL;
420	op->ownercount = 0;
421	}	429	}
422		430
423	/*	431	/*
424	* Sets the owner and sets the skill and exp pointers to owner's current	432	* Sets the owner and sets the skill and exp pointers to owner's current
425	* skill and experience objects.	433	* skill and experience objects.
426	*/	434	*/
427	void set_owner (object *op, object *owner)	435	void
		436	object::set_owner (object *owner)
428	{	437	{
429	if(owner==NULL||op==NULL)	438	if (!owner)
430	return;	439	return;
431		440
432	/* next line added to allow objects which own objects */	441	/* next line added to allow objects which own objects */
433	/* Add a check for ownercounts in here, as I got into an endless loop	442	/* Add a check for ownercounts in here, as I got into an endless loop
434	* with the fireball owning a poison cloud which then owned the	443	* with the fireball owning a poison cloud which then owned the
435	* fireball. I believe that was caused by one of the objects getting	444	* fireball. I believe that was caused by one of the objects getting
436	* freed and then another object replacing it. Since the ownercounts	445	* freed and then another object replacing it. Since the ownercounts
437	* didn't match, this check is valid and I believe that cause is valid.	446	* didn't match, this check is valid and I believe that cause is valid.
438	*/	447	*/
439	while (owner->owner && owner!=owner->owner &&	448	while (owner->owner)
440	owner->ownercount==owner->owner->count) owner=owner->owner;	449	owner = owner->owner;
441		450
442	/* IF the owner still has an owner, we did not resolve to a final owner.
443	* so lets not add to that.
444	*/
445	if (owner->owner) return;
446
447	op->owner=owner;	451	this->owner = owner;
448
449	op->ownercount=owner->count;
450	owner->refcount++;
451
452	}
453
454	/* Set the owner to clone's current owner and set the skill and experience
455	* objects to clone's objects (typically those objects that where the owner's
456	* current skill and experience objects at the time when clone's owner was
457	* set - not the owner's current skill and experience objects).
458	*
459	* Use this function if player created an object (e.g. fire bullet, swarm
460	* spell), and this object creates further objects whose kills should be
461	* accounted for the player's original skill, even if player has changed
462	* skills meanwhile.
463	*/
464	void copy_owner (object *op, object *clone)
465	{
466	object *owner = get_owner (clone);
467	if (owner == NULL) {
468	/* players don't have owners - they own themselves. Update
469	* as appropriate.
470	*/
471	if (clone->type == PLAYER) owner=clone;
472	else return;
473	}
474	set_owner(op, owner);
475
476	}	452	}
477		453
478	/* Zero the key_values on op, decrementing the shared-string	454	/* Zero the key_values on op, decrementing the shared-string
479	* refcounts and freeing the links.	455	* refcounts and freeing the links.
480	*/	456	*/
		457	static void
481	static void free_key_values(object * op)	458	free_key_values (object *op)
482	{	459	{
483	for (key_value *i = op->key_values; i != 0; )	460	for (key_value *i = op->key_values; i != 0;)
484	{	461	{
485	key_value *next = i->next;	462	key_value *next = i->next;
486	delete i;	463	delete i;
		464
487	i = next;	465	i = next;
488	}	466	}
489		467
490	op->key_values = 0;	468	op->key_values = 0;
491	}	469	}
492		470
493	void object::clear ()
494	{
495	attachable_base::clear ();
496
497	free_key_values (this);
498
499	name = 0;
500	name_pl = 0;
501	title = 0;
502	race = 0;
503	slaying = 0;
504	skill = 0;
505	msg = 0;
506	lore = 0;
507	custom_name = 0;
508	materialname = 0;
509
510	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
511
512	SET_FLAG (this, FLAG_REMOVED);
513	}
514
515	void object::clone (object *destination)
516	{
517	*(object_copy *)destination = *(object_copy *)this;
518	*(object_pod *)destination = *(object_pod *)this;
519
520	if (self || cb)
521	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
522	}
523
524	/*	471	/*
525	* clear_object() frees everything allocated by an object, and also
526	* clears all variables and flags to default settings.
527	*/
528
529	void clear_object (object *op)
530	{
531	op->clear ();
532
533	op->contr = NULL;
534	op->below = NULL;
535	op->above = NULL;
536	op->inv = NULL;
537	op->container=NULL;
538	op->env=NULL;
539	op->more=NULL;
540	op->head=NULL;
541	op->map=NULL;
542	op->refcount=0;
543	op->active_next = NULL;
544	op->active_prev = NULL;
545	/* What is not cleared is next, prev, and count */
546
547	op->expmul = 1.0;
548	op->face = blank_face;
549	op->attacked_by_count = -1;
550
551	if (settings.casting_time)
552	op->casting_time = -1;
553	}
554
555	/*
556	* copy object first frees everything allocated by the second object,	472	* copy_to first frees everything allocated by the dst object,
557	* and then copies the contends of the first object into the second	473	* and then copies the contents of itself into the second
558	* object, allocating what needs to be allocated. Basically, any	474	* object, allocating what needs to be allocated. Basically, any
559	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	475	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
560	* if the first object is freed, the pointers in the new object	476	* if the first object is freed, the pointers in the new object
561	* will point at garbage.	477	* will point at garbage.
562	*/	478	*/
563		479	void
564	void copy_object (object *op2, object *op)	480	object::copy_to (object *dst)
565	{	481	{
566	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	482	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
567	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	483	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
568		484
569	op2->clone (op);	485	*(object_copy *)dst = *this;
570		486
571	if (is_freed) SET_FLAG (op, FLAG_FREED);	487	if (is_freed)
572	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	488	SET_FLAG (dst, FLAG_FREED);
573		489
		490	if (is_removed)
		491	SET_FLAG (dst, FLAG_REMOVED);
		492
574	if (op2->speed < 0)	493	if (speed < 0)
575	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	494	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
576		495
577	/* Copy over key_values, if any. */	496	/* Copy over key_values, if any. */
578	if (op2->key_values != NULL)	497	if (key_values)
579	{	498	{
580	key_value *tail = NULL;	499	key_value *tail = 0;
581	key_value *i;	500	key_value *i;
582		501
583	op->key_values = NULL;	502	dst->key_values = 0;
584		503
585	for (i = op2->key_values; i != NULL; i = i->next)	504	for (i = key_values; i; i = i->next)
586	{	505	{
587	key_value *new_link = new key_value;	506	key_value *new_link = new key_value;
588		507
589	new_link->next = NULL;	508	new_link->next = 0;
590	new_link->key = i->key;	509	new_link->key = i->key;
591	new_link->value = i->value;	510	new_link->value = i->value;
592		511
593	/* Try and be clever here, too. */	512	/* Try and be clever here, too. */
594	if (op->key_values == NULL)	513	if (!dst->key_values)
595	{	514	{
596	op->key_values = new_link;	515	dst->key_values = new_link;
597	tail = new_link;	516	tail = new_link;
598	}	517	}
599	else	518	else
600	{	519	{
601	tail->next = new_link;	520	tail->next = new_link;
602	tail = new_link;	521	tail = new_link;
603	}	522	}
604	}	523	}
605	}	524	}
606		525
607	update_ob_speed (op);	526	dst->set_speed (dst->speed);
608	}	527	}
609		528
610	/*	529	object *
611	* get_object() grabs an object from the list of unused objects, makes	530	object::clone ()
612	* sure it is initialised, and returns it.
613	* If there are no free objects, expand_objects() is called to get more.
614	*/
615
616	object *get_object ()
617	{	531	{
618	object *op = new object;	532	object *neu = create ();
619		533	copy_to (neu);
620	op->count = ++ob_count;
621
622	op->active_next = 0;
623	op->active_prev = 0;
624
625	op->next = objects;
626	op->prev = 0;
627
628	if (objects)
629	objects->prev = op;
630
631	objects = op;
632
633	SET_FLAG (op, FLAG_REMOVED);
634
635	op->expmul = 1.0;
636	op->face = blank_face;
637	op->attacked_by_count = -1;
638
639	return op;	534	return neu;
640	}	535	}
641		536
642	/*	537	/*
643	* If an object with the IS_TURNABLE() flag needs to be turned due	538	* If an object with the IS_TURNABLE() flag needs to be turned due
644	* to the closest player being on the other side, this function can	539	* to the closest player being on the other side, this function can
645	* be called to update the face variable, _and_ how it looks on the map.	540	* be called to update the face variable, _and_ how it looks on the map.
646	*/	541	*/
647		542	void
648	void update_turn_face(object *op) {	543	update_turn_face (object *op)
		544	{
649	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	545	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
650	return;	546	return;
		547
651	SET_ANIMATION(op, op->direction);	548	SET_ANIMATION (op, op->direction);
652	update_object(op,UP_OBJ_FACE);	549	update_object (op, UP_OBJ_FACE);
653	}	550	}
654		551
655	/*	552	/*
656	* Updates the speed of an object. If the speed changes from 0 to another	553	* Updates the speed of an object. If the speed changes from 0 to another
657	* value, or vice versa, then add/remove the object from the active list.	554	* value, or vice versa, then add/remove the object from the active list.
658	* This function needs to be called whenever the speed of an object changes.	555	* This function needs to be called whenever the speed of an object changes.
659	*/	556	*/
660		557	void
661	void update_ob_speed(object *op) {	558	object::set_speed (float speed)
662	extern int arch_init;	559	{
663		560	if (flag [FLAG_FREED] && speed)
664	/* No reason putting the archetypes objects on the speed list,	561	{
665	* since they never really need to be updated.
666	*/
667
668	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
669	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	562	LOG (llevError, "Object %s is freed but has speed.\n", &name);
670	#ifdef MANY_CORES
671	abort();
672	#else
673	op->speed = 0;	563	speed = 0;
674	#endif
675	}	564	}
676	if (arch_init) {
677	return;
678	}
679	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
680	/* If already on active list, don't do anything */
681	if (op->active_next || op->active_prev || op==active_objects)
682	return;
683		565
684	/* process_events() expects us to insert the object at the beginning	566	this->speed = speed;
685	* of the list. */	567
686	op->active_next = active_objects;	568	if (has_active_speed ())
687	if (op->active_next!=NULL)	569	activate ();
688	op->active_next->active_prev = op;
689	active_objects = op;
690	}
691	else {	570	else
692	/* If not on the active list, nothing needs to be done */	571	deactivate ();
693	if (!op->active_next && !op->active_prev && op!=active_objects)
694	return;
695
696	if (op->active_prev==NULL) {
697	active_objects = op->active_next;
698	if (op->active_next!=NULL)
699	op->active_next->active_prev = NULL;
700	}
701	else {
702	op->active_prev->active_next = op->active_next;
703	if (op->active_next)
704	op->active_next->active_prev = op->active_prev;
705	}
706	op->active_next = NULL;
707	op->active_prev = NULL;
708	}
709	}	572	}
710		573
711	/* This function removes object 'op' from the list of active
712	* objects.
713	* This should only be used for style maps or other such
714	* reference maps where you don't want an object that isn't
715	* in play chewing up cpu time getting processed.
716	* The reverse of this is to call update_ob_speed, which
717	* will do the right thing based on the speed of the object.
718	*/
719	void remove_from_active_list(object *op)
720	{
721	/* If not on the active list, nothing needs to be done */
722	if (!op->active_next && !op->active_prev && op!=active_objects)
723	return;
724
725	if (op->active_prev==NULL) {
726	active_objects = op->active_next;
727	if (op->active_next!=NULL)
728	op->active_next->active_prev = NULL;
729	}
730	else {
731	op->active_prev->active_next = op->active_next;
732	if (op->active_next)
733	op->active_next->active_prev = op->active_prev;
734	}
735	op->active_next = NULL;
736	op->active_prev = NULL;
737	}
738
739	/*	574	/*
740	* update_object() updates the array which represents the map.	575	* update_object() updates the the map.
741	* It takes into account invisible objects (and represent squares covered	576	* It takes into account invisible objects (and represent squares covered
742	* by invisible objects by whatever is below them (unless it's another	577	* by invisible objects by whatever is below them (unless it's another
743	* invisible object, etc...)	578	* invisible object, etc...)
744	* If the object being updated is beneath a player, the look-window	579	* If the object being updated is beneath a player, the look-window
745	* of that player is updated (this might be a suboptimal way of	580	* of that player is updated (this might be a suboptimal way of
746	* updating that window, though, since update_object() is called _often_)	581	* updating that window, though, since update_object() is called _often_)
747	*	582	*
748	* action is a hint of what the caller believes need to be done.	583	* action is a hint of what the caller believes need to be done.
749	* For example, if the only thing that has changed is the face (due to
750	* an animation), we don't need to call update_position until that actually
751	* comes into view of a player. OTOH, many other things, like addition/removal
752	* of walls or living creatures may need us to update the flags now.
753	* current action are:	584	* current action are:
754	* UP_OBJ_INSERT: op was inserted	585	* UP_OBJ_INSERT: op was inserted
755	* UP_OBJ_REMOVE: op was removed	586	* UP_OBJ_REMOVE: op was removed
756	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	587	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
757	* as that is easier than trying to look at what may have changed.	588	* as that is easier than trying to look at what may have changed.
758	* UP_OBJ_FACE: only the objects face has changed.	589	* UP_OBJ_FACE: only the objects face has changed.
759	*/	590	*/
760		591	void
761	void update_object(object *op, int action) {	592	update_object (object *op, int action)
762	int update_now=0, flags;	593	{
763	MoveType move_on, move_off, move_block, move_slow;	594	MoveType move_on, move_off, move_block, move_slow;
764		595
765	if (op == NULL) {	596	if (op == NULL)
		597	{
766	/* this should never happen */	598	/* this should never happen */
767	LOG(llevDebug,"update_object() called for NULL object.\n");	599	LOG (llevDebug, "update_object() called for NULL object.\n");
768	return;	600	return;
769	}
770		601	}
771	if(op->env!=NULL) {	602
		603	if (op->env)
		604	{
772	/* Animation is currently handled by client, so nothing	605	/* Animation is currently handled by client, so nothing
773	* to do in this case.	606	* to do in this case.
774	*/	607	*/
775	return;	608	return;
776	}	609	}
777		610
778	/* If the map is saving, don't do anything as everything is	611	/* If the map is saving, don't do anything as everything is
779	* going to get freed anyways.	612	* going to get freed anyways.
780	*/	613	*/
781	if (!op->map || op->map->in_memory == MAP_SAVING) return;	614	if (!op->map || op->map->in_memory == MAP_SAVING)
782		615	return;
		616
783	/* make sure the object is within map boundaries */	617	/* make sure the object is within map boundaries */
784	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	618	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
785	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	619	{
786	LOG(llevError,"update_object() called for object out of map!\n");	620	LOG (llevError, "update_object() called for object out of map!\n");
787	#ifdef MANY_CORES	621	#ifdef MANY_CORES
788	abort();	622	abort ();
789	#endif	623	#endif
790	return;	624	return;
791	}
792		625	}
793	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
794	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
795	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
796	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
797	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
798	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
799		626
		627	mapspace &m = op->ms ();
		628
		629	if (!(m.flags_ & P_UPTODATE))
		630	/* nop */;
800	if (action == UP_OBJ_INSERT) {	631	else if (action == UP_OBJ_INSERT)
		632	{
		633	// this is likely overkill, TODO: revisit (schmorp)
801	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	634	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
802	update_now=1;
803
804	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	635	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
805	update_now=1;	636	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
806		637	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		638	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
807	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	639	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
808	update_now=1;	640	|| (m.move_on | op->move_on ) != m.move_on
809
810	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
811	update_now=1;
812
813	if ((move_on | op->move_on) != move_on) update_now=1;
814	if ((move_off | op->move_off) != move_off) update_now=1;	641	|| (m.move_off | op->move_off ) != m.move_off
		642	|| (m.move_slow | op->move_slow) != m.move_slow
815	/* This isn't perfect, but I don't expect a lot of objects to	643	/* This isn't perfect, but I don't expect a lot of objects to
816	* to have move_allow right now.	644	* to have move_allow right now.
817	*/	645	*/
818	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	646	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
819	update_now=1;	647	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
820	if ((move_slow | op->move_slow) != move_slow) update_now=1;	648	m.flags_ = 0;
821	}	649	}
822	/* if the object is being removed, we can't make intelligent	650	/* if the object is being removed, we can't make intelligent
823	* decisions, because remove_ob can't really pass the object	651	* decisions, because remove_ob can't really pass the object
824	* that is being removed.	652	* that is being removed.
825	*/	653	*/
826	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	654	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
827	update_now=1;	655	m.flags_ = 0;
828	} else if (action == UP_OBJ_FACE) {	656	else if (action == UP_OBJ_FACE)
829	/* Nothing to do for that case */	657	/* Nothing to do for that case */ ;
830	}
831	else {	658	else
832	LOG(llevError,"update_object called with invalid action: %d\n", action);	659	LOG (llevError, "update_object called with invalid action: %d\n", action);
833	}
834		660
835	if (update_now) {
836	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
837	update_position(op->map, op->x, op->y);
838	}
839
840	if(op->more!=NULL)	661	if (op->more)
841	update_object(op->more, action);	662	update_object (op->more, action);
842	}	663	}
843		664
		665	object *object::first;
844		666
845	/*	667	object::object ()
846	* free_object() frees everything allocated by an object, removes	668	{
847	* it from the list of used objects, and puts it on the list of	669	SET_FLAG (this, FLAG_REMOVED);
848	* free objects. The IS_FREED() flag is set in the object.	670
849	* The object must have been removed by remove_ob() first for	671	expmul = 1.0;
850	* this function to succeed.	672	face = blank_face;
851	*	673	}
852	* If free_inventory is set, free inventory as well. Else drop items in	674
853	* inventory to the ground.	675	object::~object ()
854	*/	676	{
		677	free_key_values (this);
		678	}
		679
		680	void object::link ()
		681	{
		682	count = ++ob_count;
		683	uuid = gen_uuid ();
		684
		685	prev = 0;
		686	next = object::first;
		687
		688	if (object::first)
		689	object::first->prev = this;
		690
		691	object::first = this;
		692	}
		693
		694	void object::unlink ()
		695	{
		696	if (this == object::first)
		697	object::first = next;
		698
		699	/* Remove this object from the list of used objects */
		700	if (prev) prev->next = next;
		701	if (next) next->prev = prev;
		702
		703	prev = 0;
		704	next = 0;
		705	}
		706
		707	bool
		708	object::active () const
		709	{
		710	return active_next || active_prev || this == active_objects;
		711	}
855		712
856	void	713	void
857	free_object (object * ob)	714	object::activate ()
858	{	715	{
859	free_object2 (ob, 0);	716	/* If already on active list, don't do anything */
		717	if (active ())
		718	return;
		719
		720	if (has_active_speed ())
		721	{
		722	/* process_events() expects us to insert the object at the beginning
		723	* of the list. */
		724	active_next = active_objects;
		725
		726	if (active_next)
		727	active_next->active_prev = this;
		728
		729	active_objects = this;
		730	}
860	}	731	}
861		732
862	void	733	void
863	free_object2 (object * ob, int free_inventory)	734	object::activate_recursive ()
864	{	735	{
865	object *tmp, *op;	736	activate ();
866		737
867	if (!QUERY_FLAG (ob, FLAG_REMOVED))	738	for (object *op = inv; op; op = op->above)
868	{	739	op->activate_recursive ();
869	LOG (llevDebug, "Free object called with non removed object\n");	740	}
870	dump_object (ob);
871	#ifdef MANY_CORES
872	abort ();
873	#endif
874	}
875		741
876	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	742	/* This function removes object 'op' from the list of active
877	{	743	* objects.
878	LOG (llevMonster, "Warning: tried to free friendly object.\n");	744	* This should only be used for style maps or other such
879	remove_friendly_object (ob);	745	* reference maps where you don't want an object that isn't
880	}	746	* in play chewing up cpu time getting processed.
881		747	* The reverse of this is to call update_ob_speed, which
882	if (QUERY_FLAG (ob, FLAG_FREED))	748	* will do the right thing based on the speed of the object.
883	{	749	*/
884	dump_object (ob);	750	void
885	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	751	object::deactivate ()
		752	{
		753	/* If not on the active list, nothing needs to be done */
		754	if (!active ())
886	return;	755	return;
887	}
888		756
889	if (ob->more != NULL)	757	if (active_prev == 0)
890	{
891	free_object2 (ob->more, free_inventory);
892	ob->more = NULL;
893	}
894
895	if (ob->inv)
896	{
897	/* Only if the space blocks everything do we not process -
898	* if some form of movemnt is allowed, let objects
899	* drop on that space.
900	*/
901	if (free_inventory || ob->map == NULL
902	|| ob->map->in_memory != MAP_IN_MEMORY
903	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
904	{
905	op = ob->inv;
906
907	while (op != NULL)
908	{	758	{
909	tmp = op->below;	759	active_objects = active_next;
910	remove_ob (op);	760	if (active_next)
911	free_object2 (op, free_inventory);	761	active_next->active_prev = 0;
912	op = tmp;
913	}
914	}
915	else
916	{ /* Put objects in inventory onto this space */
917	op = ob->inv;
918
919	while (op != NULL)
920	{
921	tmp = op->below;
922	remove_ob (op);
923
924	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
925	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
926	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
927	free_object (op);
928	else
929	{
930	op->x = ob->x;
931	op->y = ob->y;
932	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
933	}
934
935	op = tmp;
936	}
937	}
938	}
939
940	/* Remove object from the active list */
941	ob->speed = 0;
942	update_ob_speed (ob);
943
944	SET_FLAG (ob, FLAG_FREED);
945	ob->count = 0;
946
947	/* Remove this object from the list of used objects */
948	if (ob->prev == NULL)
949	{
950	objects = ob->next;
951
952	if (objects != NULL)
953	objects->prev = NULL;
954	}	762	}
955	else	763	else
956	{	764	{
957	ob->prev->next = ob->next;	765	active_prev->active_next = active_next;
		766	if (active_next)
		767	active_next->active_prev = active_prev;
		768	}
958		769
959	if (ob->next != NULL)	770	active_next = 0;
960	ob->next->prev = ob->prev;	771	active_prev = 0;
		772	}
		773
		774	void
		775	object::deactivate_recursive ()
		776	{
		777	for (object *op = inv; op; op = op->above)
		778	op->deactivate_recursive ();
		779
		780	deactivate ();
		781	}
		782
		783	/*
		784	* Remove and free all objects in the inventory of the given object.
		785	* object.c ?
		786	*/
		787	void
		788	object::destroy_inv (bool drop_to_ground)
		789	{
		790	// need to check first, because the checks below might segfault
		791	// as we might be on an invalid mapspace and crossfire code
		792	// is too buggy to ensure that the inventory is empty.
		793	// corollary: if you create arrows etc. with stuff in tis inventory,
		794	// cf will crash below with off-map x and y
		795	if (!inv)
		796	return;
		797
		798	/* Only if the space blocks everything do we not process -
		799	* if some form of movement is allowed, let objects
		800	* drop on that space.
		801	*/
		802	if (!drop_to_ground
		803	|| !map
		804	|| map->in_memory != MAP_IN_MEMORY
		805	|| ms ().move_block == MOVE_ALL)
		806	{
		807	while (inv)
		808	{
		809	inv->destroy_inv (drop_to_ground);
		810	inv->destroy ();
		811	}
		812	}
		813	else
		814	{ /* Put objects in inventory onto this space */
		815	while (inv)
		816	{
		817	object *op = inv;
		818
		819	if (op->flag [FLAG_STARTEQUIP]
		820	|| op->flag [FLAG_NO_DROP]
		821	|| op->type == RUNE
		822	|| op->type == TRAP
		823	|| op->flag [FLAG_IS_A_TEMPLATE])
		824	op->destroy ();
		825	else
		826	map->insert (op, x, y);
		827	}
		828	}
		829	}
		830
		831	object *object::create ()
		832	{
		833	object *op = new object;
		834	op->link ();
		835	return op;
		836	}
		837
		838	void
		839	object::do_destroy ()
		840	{
		841	if (flag [FLAG_IS_LINKED])
		842	remove_button_link (this);
		843
		844	if (flag [FLAG_FRIENDLY])
		845	remove_friendly_object (this);
		846
		847	if (!flag [FLAG_REMOVED])
		848	remove ();
		849
		850	if (flag [FLAG_FREED])
		851	return;
		852
		853	set_speed (0);
		854
		855	flag [FLAG_FREED] = 1;
		856
		857	attachable::do_destroy ();
		858
		859	destroy_inv (true);
		860	unlink ();
		861
		862	// hack to ensure that freed objects still have a valid map
		863	{
		864	static maptile *freed_map; // freed objects are moved here to avoid crashes
		865
		866	if (!freed_map)
		867	{
		868	freed_map = new maptile;
		869
		870	freed_map->name = "/internal/freed_objects_map";
		871	freed_map->width = 3;
		872	freed_map->height = 3;
		873
		874	freed_map->alloc ();
961	}	875	}
962		876
963	free_key_values (ob);	877	map = freed_map;
		878	x = 1;
		879	y = 1;
		880	}
964		881
965	/* Now link it with the free_objects list: */	882	head = 0;
966	ob->prev = 0;
967	ob->next = 0;
968		883
969	delete ob;	884	if (more)
		885	{
		886	more->destroy ();
		887	more = 0;
		888	}
		889
		890	// clear those pointers that likely might have circular references to us
		891	owner = 0;
		892	enemy = 0;
		893	attacked_by = 0;
		894
		895	// only relevant for players(?), but make sure of it anyways
		896	contr = 0;
		897	}
		898
		899	void
		900	object::destroy (bool destroy_inventory)
		901	{
		902	if (destroyed ())
		903	return;
		904
		905	if (destroy_inventory)
		906	destroy_inv (false);
		907
		908	attachable::destroy ();
970	}	909	}
971		910
972	/*	911	/*
973	* sub_weight() recursively (outwards) subtracts a number from the	912	* sub_weight() recursively (outwards) subtracts a number from the
974	* weight of an object (and what is carried by it's environment(s)).	913	* weight of an object (and what is carried by it's environment(s)).
975	*/	914	*/
976		915	void
977	void sub_weight (object *op, signed long weight) {	916	sub_weight (object *op, signed long weight)
		917	{
978	while (op != NULL) {	918	while (op != NULL)
		919	{
979	if (op->type == CONTAINER) {	920	if (op->type == CONTAINER)
980	weight=(signed long)(weight*(100-op->stats.Str)/100);	921	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
981	}	922
982	op->carrying-=weight;	923	op->carrying -= weight;
983	op = op->env;	924	op = op->env;
984	}	925	}
985	}	926	}
986		927
987	/* remove_ob(op):	928	/* op->remove ():
988	* This function removes the object op from the linked list of objects	929	* This function removes the object op from the linked list of objects
989	* which it is currently tied to. When this function is done, the	930	* which it is currently tied to. When this function is done, the
990	* object will have no environment. If the object previously had an	931	* object will have no environment. If the object previously had an
991	* environment, the x and y coordinates will be updated to	932	* environment, the x and y coordinates will be updated to
992	* the previous environment.	933	* the previous environment.
993	* Beware: This function is called from the editor as well!	934	* Beware: This function is called from the editor as well!
994	*/	935	*/
995		936	void
996	void remove_ob(object *op) {	937	object::remove ()
		938	{
997	object *tmp,*last=NULL;	939	object *tmp, *last = 0;
998	object *otmp;	940	object *otmp;
999	tag_t tag;
1000	int check_walk_off;
1001	mapstruct *m;
1002	sint16 x,y;
1003
1004		941
1005	if(QUERY_FLAG(op,FLAG_REMOVED)) {	942	if (QUERY_FLAG (this, FLAG_REMOVED))
1006	dump_object(op);	943	return;
1007	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1008		944
1009	/* Changed it to always dump core in this case. As has been learned
1010	* in the past, trying to recover from errors almost always
1011	* make things worse, and this is a real error here - something
1012	* that should not happen.
1013	* Yes, if this was a mission critical app, trying to do something
1014	* to recover may make sense, but that is because failure of the app
1015	* may have other disastrous problems. Cf runs out of a script
1016	* so is easily enough restarted without any real problems.
1017	* MSW 2001-07-01
1018	*/
1019	abort();
1020	}
1021	if(op->more!=NULL)
1022	remove_ob(op->more);
1023
1024	SET_FLAG(op, FLAG_REMOVED);	945	SET_FLAG (this, FLAG_REMOVED);
		946	INVOKE_OBJECT (REMOVE, this);
1025		947
		948	if (more)
		949	more->remove ();
		950
1026	/*	951	/*
1027	* In this case, the object to be removed is in someones	952	* In this case, the object to be removed is in someones
1028	* inventory.	953	* inventory.
1029	*/	954	*/
1030	if(op->env!=NULL) {	955	if (env)
		956	{
1031	if(op->nrof)	957	if (nrof)
1032	sub_weight(op->env, op->weight*op->nrof);	958	sub_weight (env, weight * nrof);
1033	else	959	else
1034	sub_weight(op->env, op->weight+op->carrying);	960	sub_weight (env, weight + carrying);
1035		961
1036	/* NO_FIX_PLAYER is set when a great many changes are being	962	/* NO_FIX_PLAYER is set when a great many changes are being
1037	* made to players inventory. If set, avoiding the call	963	* made to players inventory. If set, avoiding the call
1038	* to save cpu time.	964	* to save cpu time.
1039	*/	965	*/
1040	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	966	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1041	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	967	otmp->update_stats ();
1042	fix_player(otmp);
1043		968
1044	if(op->above!=NULL)	969	if (above)
1045	op->above->below=op->below;	970	above->below = below;
1046	else	971	else
1047	op->env->inv=op->below;	972	env->inv = below;
1048		973
1049	if(op->below!=NULL)	974	if (below)
1050	op->below->above=op->above;	975	below->above = above;
1051		976
1052	/* we set up values so that it could be inserted into	977	/* we set up values so that it could be inserted into
1053	* the map, but we don't actually do that - it is up	978	* the map, but we don't actually do that - it is up
1054	* to the caller to decide what we want to do.	979	* to the caller to decide what we want to do.
		980	*/
		981	x = env->x, y = env->y;
		982	map = env->map;
		983	above = 0, below = 0;
		984	env = 0;
		985	}
		986	else if (map)
		987	{
		988	if (type == PLAYER)
		989	{
		990	--map->players;
		991	map->touch ();
		992	}
		993
		994	map->dirty = true;
		995
		996	/* link the object above us */
		997	if (above)
		998	above->below = below;
		999	else
		1000	map->at (x, y).top = below; /* we were top, set new top */
		1001
		1002	/* Relink the object below us, if there is one */
		1003	if (below)
		1004	below->above = above;
		1005	else
		1006	{
		1007	/* Nothing below, which means we need to relink map object for this space
		1008	* use translated coordinates in case some oddness with map tiling is
		1009	* evident
1055	*/	1010	*/
1056	op->x=op->env->x,op->y=op->env->y;	1011	if (GET_MAP_OB (map, x, y) != this)
1057	op->map=op->env->map;	1012	{
1058	op->above=NULL,op->below=NULL;	1013	char *dump = dump_object (this);
1059	op->env=NULL;	1014	LOG (llevError,
		1015	"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);
		1016	free (dump);
		1017	dump = dump_object (GET_MAP_OB (map, x, y));
		1018	LOG (llevError, "%s\n", dump);
		1019	free (dump);
		1020	}
		1021
		1022	map->at (x, y).bot = above; /* goes on above it. */
		1023	}
		1024
		1025	above = 0;
		1026	below = 0;
		1027
		1028	if (map->in_memory == MAP_SAVING)
1060	return;	1029	return;
1061	}
1062		1030
1063	/* If we get here, we are removing it from a map */	1031	int check_walk_off = !flag [FLAG_NO_APPLY];
1064	if (op->map == NULL) return;
1065		1032
1066	x = op->x;	1033	for (tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
1067	y = op->y;
1068	m = get_map_from_coord(op->map, &x, &y);
1069
1070	if (!m) {
1071	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1072	op->map->path, op->x, op->y);
1073	/* in old days, we used to set x and y to 0 and continue.
1074	* it seems if we get into this case, something is probablye
1075	* screwed up and should be fixed.
1076	*/
1077	abort();
1078	}
1079	if (op->map != m) {
1080	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1081	op->map->path, m->path, op->x, op->y, x, y);
1082	}
1083
1084	/* Re did the following section of code - it looks like it had
1085	* lots of logic for things we no longer care about
1086	*/
1087
1088	/* link the object above us */
1089	if (op->above)
1090	op->above->below=op->below;
1091	else
1092	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1093
1094	/* Relink the object below us, if there is one */
1095	if(op->below) {
1096	op->below->above=op->above;
1097	} else {
1098	/* Nothing below, which means we need to relink map object for this space
1099	* use translated coordinates in case some oddness with map tiling is
1100	* evident
1101	*/
1102	if(GET_MAP_OB(m,x,y)!=op) {
1103	dump_object(op);
1104	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);
1105	dump_object(GET_MAP_OB(m,x,y));
1106	LOG(llevError,"%s\n",errmsg);
1107	}	1034	{
1108	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1109	}
1110	op->above=NULL;
1111	op->below=NULL;
1112
1113	if (op->map->in_memory == MAP_SAVING)
1114	return;
1115
1116	tag = op->count;
1117	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1118	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1119	/* No point updating the players look faces if he is the object	1035	/* No point updating the players look faces if he is the object
1120	* being removed.	1036	* being removed.
1121	*/	1037	*/
1122		1038
1123	if(tmp->type==PLAYER && tmp!=op) {	1039	if (tmp->type == PLAYER && tmp != this)
		1040	{
1124	/* If a container that the player is currently using somehow gets	1041	/* If a container that the player is currently using somehow gets
1125	* removed (most likely destroyed), update the player view	1042	* removed (most likely destroyed), update the player view
1126	* appropriately.	1043	* appropriately.
1127	*/	1044	*/
1128	if (tmp->container==op) {	1045	if (tmp->container == this)
1129	CLEAR_FLAG(op, FLAG_APPLIED);	1046	{
		1047	flag [FLAG_APPLIED] = 0;
1130	tmp->container=NULL;	1048	tmp->container = 0;
		1049	}
		1050
		1051	if (tmp->contr->ns)
		1052	tmp->contr->ns->floorbox_update ();
1131	}	1053	}
1132	tmp->contr->socket.update_look=1;	1054
1133	}
1134	/* See if player moving off should effect something */	1055	/* See if object moving off should effect something */
1135	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1056	if (check_walk_off
		1057	&& ((move_type & tmp->move_off)
1136	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1058	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1137		1059	{
1138	move_apply(tmp, op, NULL);	1060	move_apply (tmp, this, 0);
		1061
1139	if (was_destroyed (op, tag)) {	1062	if (destroyed ())
1140	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "	1063	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1141	"leaving object\n", &tmp->name, &tmp->arch->name);
1142	}	1064	}
1143	}
1144		1065
1145	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1066	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1146		1067	//TODO: why is this horrible hacka fix? get rid of this code=bug! (schmorp)
1147	if(tmp->above == tmp)	1068	if (tmp->above == tmp)
1148	tmp->above = NULL;	1069	tmp->above = 0;
		1070
1149	last=tmp;	1071	last = tmp;
1150	}	1072	}
		1073
1151	/* last == NULL of there are no objects on this space */	1074	/* last == NULL if there are no objects on this space */
1152	if (last==NULL) {	1075	//TODO: this makes little sense, why only update the topmost object?
1153	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1076	if (!last)
1154	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1077	map->at (x, y).flags_ = 0;
1155	* those out anyways, and if there are any flags set right now, they won't
1156	* be correct anyways.
1157	*/
1158	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1159	update_position(op->map, op->x, op->y);
1160	}
1161	else	1078	else
1162	update_object(last, UP_OBJ_REMOVE);	1079	update_object (last, UP_OBJ_REMOVE);
1163		1080
1164	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1081	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1165	update_all_los(op->map, op->x, op->y);	1082	update_all_los (map, x, y);
1166		1083	}
1167	}	1084	}
1168		1085
1169	/*	1086	/*
1170	* merge_ob(op,top):	1087	* merge_ob(op,top):
1171	*	1088	*
1172	* This function goes through all objects below and including top, and	1089	* This function goes through all objects below and including top, and
1173	* merges op to the first matching object.	1090	* merges op to the first matching object.
1174	* If top is NULL, it is calculated.	1091	* If top is NULL, it is calculated.
1175	* Returns pointer to object if it succeded in the merge, otherwise NULL	1092	* Returns pointer to object if it succeded in the merge, otherwise NULL
1176	*/	1093	*/
1177		1094	object *
1178	object *merge_ob(object *op, object *top) {	1095	merge_ob (object *op, object *top)
		1096	{
1179	if(!op->nrof)	1097	if (!op->nrof)
1180	return 0;	1098	return 0;
1181	if(top==NULL)	1099
		1100	if (top)
1182	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1101	for (top = op; top && top->above; top = top->above)
		1102	;
		1103
1183	for(;top!=NULL;top=top->below) {	1104	for (; top; top = top->below)
		1105	{
1184	if(top==op)	1106	if (top == op)
1185	continue;	1107	continue;
1186	if (CAN_MERGE(op,top))	1108
1187	{	1109	if (object::can_merge (op, top))
		1110	{
1188	top->nrof+=op->nrof;	1111	top->nrof += op->nrof;
		1112
1189	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1113	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1190	op->weight = 0; /* Don't want any adjustements now */	1114	op->weight = 0; /* Don't want any adjustements now */
1191	remove_ob(op);	1115	op->destroy ();
1192	free_object(op);
1193	return top;	1116	return top;
1194	}	1117	}
1195	}	1118	}
		1119
1196	return NULL;	1120	return 0;
1197	}	1121	}
1198		1122
1199	/*	1123	/*
1200	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1124	* same as insert_ob_in_map except it handle separate coordinates and do a clean
1201	* job preparing multi-part monsters	1125	* job preparing multi-part monsters
1202	*/	1126	*/
		1127	object *
1203	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1128	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1204	object* tmp;	1129	{
1205	if (op->head)	1130	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1206	op=op->head;	1131	{
1207	for (tmp=op;tmp;tmp=tmp->more){
1208	tmp->x=x+tmp->arch->clone.x;	1132	tmp->x = x + tmp->arch->clone.x;
1209	tmp->y=y+tmp->arch->clone.y;	1133	tmp->y = y + tmp->arch->clone.y;
1210	}	1134	}
		1135
1211	return insert_ob_in_map (op, m, originator, flag);	1136	return insert_ob_in_map (op, m, originator, flag);
1212	}	1137	}
1213		1138
1214	/*	1139	/*
1215	* insert_ob_in_map (op, map, originator, flag):	1140	* insert_ob_in_map (op, map, originator, flag):
1216	* This function inserts the object in the two-way linked list	1141	* This function inserts the object in the two-way linked list
…		…
1229	* Return value:	1154	* Return value:
1230	* new object if 'op' was merged with other object	1155	* new object if 'op' was merged with other object
1231	* NULL if 'op' was destroyed	1156	* NULL if 'op' was destroyed
1232	* just 'op' otherwise	1157	* just 'op' otherwise
1233	*/	1158	*/
1234		1159	object *
1235	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1160	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1236	{	1161	{
1237	object *tmp, *top, *floor=NULL;	1162	object *tmp, *top, *floor = NULL;
1238	sint16 x,y;	1163	sint16 x, y;
1239		1164
1240	if (QUERY_FLAG (op, FLAG_FREED)) {	1165	if (QUERY_FLAG (op, FLAG_FREED))
		1166	{
1241	LOG (llevError, "Trying to insert freed object!\n");	1167	LOG (llevError, "Trying to insert freed object!\n");
1242	return NULL;	1168	return NULL;
		1169	}
		1170
		1171	if (!m)
1243	}	1172	{
1244	if(m==NULL) {
1245	dump_object(op);	1173	char *dump = dump_object (op);
1246	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);	1174	LOG (llevError, "Trying to insert in null-map!\n%s\n", dump);
		1175	free (dump);
1247	return op;	1176	return op;
1248	}	1177	}
		1178
1249	if(out_of_map(m,op->x,op->y)) {	1179	if (out_of_map (m, op->x, op->y))
		1180	{
1250	dump_object(op);	1181	char *dump = dump_object (op);
1251	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1182	LOG (llevError, "Trying to insert object outside the map.\n%s\n", dump);
1252	#ifdef MANY_CORES	1183	#ifdef MANY_CORES
1253	/* Better to catch this here, as otherwise the next use of this object	1184	/* Better to catch this here, as otherwise the next use of this object
1254	* is likely to cause a crash. Better to find out where it is getting	1185	* is likely to cause a crash. Better to find out where it is getting
1255	* improperly inserted.	1186	* improperly inserted.
1256	*/	1187	*/
1257	abort();	1188	abort ();
1258	#endif	1189	#endif
		1190	free (dump);
1259	return op;	1191	return op;
1260	}	1192	}
		1193
1261	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1194	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1195	{
1262	dump_object(op);	1196	char *dump = dump_object (op);
1263	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);	1197	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", dump);
		1198	free (dump);
1264	return op;	1199	return op;
		1200	}
		1201
		1202	if (op->more)
1265	}	1203	{
1266	if(op->more!=NULL) {
1267	/* The part may be on a different map. */	1204	/* The part may be on a different map. */
1268		1205
1269	object *more = op->more;	1206	object *more = op->more;
1270		1207
1271	/* We really need the caller to normalize coordinates - if	1208	/* We really need the caller to normalize coordinates - if
1272	* we set the map, that doesn't work if the location is within	1209	* we set the map, that doesn't work if the location is within
1273	* a map and this is straddling an edge. So only if coordinate	1210	* a map and this is straddling an edge. So only if coordinate
1274	* is clear wrong do we normalize it.	1211	* is clear wrong do we normalize it.
1275	*/	1212	*/
1276	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1213	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1277	more->map = get_map_from_coord(m, &more->x, &more->y);	1214	more->map = get_map_from_coord (m, &more->x, &more->y);
1278	} else if (!more->map) {	1215	else if (!more->map)
		1216	{
1279	/* For backwards compatibility - when not dealing with tiled maps,	1217	/* For backwards compatibility - when not dealing with tiled maps,
1280	* more->map should always point to the parent.	1218	* more->map should always point to the parent.
1281	*/	1219	*/
1282	more->map = m;	1220	more->map = m;
1283	}	1221	}
1284		1222
1285	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1223	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1224	{
1286	if ( ! op->head)	1225	if (!op->head)
1287	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1226	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
		1227
1288	return NULL;	1228	return 0;
1289	}	1229	}
1290	}	1230	}
		1231
1291	CLEAR_FLAG(op,FLAG_REMOVED);	1232	CLEAR_FLAG (op, FLAG_REMOVED);
1292		1233
1293	/* Ideally, the caller figures this out. However, it complicates a lot	1234	/* Ideally, the caller figures this out. However, it complicates a lot
1294	* of areas of callers (eg, anything that uses find_free_spot would now	1235	* of areas of callers (eg, anything that uses find_free_spot would now
1295	* need extra work	1236	* need extra work
1296	*/	1237	*/
1297	op->map=get_map_from_coord(m, &op->x, &op->y);	1238	op->map = get_map_from_coord (m, &op->x, &op->y);
1298	x = op->x;	1239	x = op->x;
1299	y = op->y;	1240	y = op->y;
1300		1241
1301	/* this has to be done after we translate the coordinates.	1242	/* this has to be done after we translate the coordinates.
1302	*/	1243	*/
1303	if(op->nrof && !(flag & INS_NO_MERGE)) {	1244	if (op->nrof && !(flag & INS_NO_MERGE))
1304	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1245	for (tmp = GET_MAP_OB (op->map, x, y); tmp; tmp = tmp->above)
1305	if (CAN_MERGE(op,tmp)) {	1246	if (object::can_merge (op, tmp))
		1247	{
1306	op->nrof+=tmp->nrof;	1248	op->nrof += tmp->nrof;
1307	remove_ob(tmp);	1249	tmp->destroy ();
1308	free_object(tmp);	1250	}
		1251
		1252	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1253	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1254
		1255	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1256	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1257
		1258	if (flag & INS_BELOW_ORIGINATOR)
		1259	{
		1260	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1261	{
		1262	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1263	abort ();
		1264	}
		1265
		1266	op->above = originator;
		1267	op->below = originator->below;
		1268
		1269	if (op->below)
		1270	op->below->above = op;
		1271	else
		1272	op->ms ().bot = op;
		1273
		1274	/* since *below* originator, no need to update top */
		1275	originator->below = op;
		1276	}
		1277	else
		1278	{
		1279	/* If there are other objects, then */
		1280	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))
		1281	{
		1282	object *last = 0;
		1283
		1284	/*
		1285	* If there are multiple objects on this space, we do some trickier handling.
		1286	* We've already dealt with merging if appropriate.
		1287	* Generally, we want to put the new object on top. But if
		1288	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1289	* floor, we want to insert above that and no further.
		1290	* Also, if there are spell objects on this space, we stop processing
		1291	* once we get to them. This reduces the need to traverse over all of
		1292	* them when adding another one - this saves quite a bit of cpu time
		1293	* when lots of spells are cast in one area. Currently, it is presumed
		1294	* that flying non pickable objects are spell objects.
		1295	*/
		1296	while (top)
		1297	{
		1298	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1299	floor = top;
		1300
		1301	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1302	{
		1303	/* We insert above top, so we want this object below this */
		1304	top = top->below;
		1305	break;
		1306	}
		1307
		1308	last = top;
		1309	top = top->above;
1309	}	1310	}
1310	}
1311		1311
1312	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1312	/* Don't want top to be NULL, so set it to the last valid object */
1313	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1313	top = last;
1314	if (!QUERY_FLAG(op, FLAG_ALIVE))
1315	CLEAR_FLAG(op, FLAG_NO_STEAL);
1316		1314
1317	if (flag & INS_BELOW_ORIGINATOR) {	1315	/* We let update_position deal with figuring out what the space
1318	if (originator->map != op->map || originator->x != op->x ||	1316	* looks like instead of lots of conditions here.
1319	originator->y != op->y) {	1317	* makes things faster, and effectively the same result.
1320	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1321	abort();
1322	}
1323	op->above = originator;
1324	op->below = originator->below;
1325	if (op->below) op->below->above = op;
1326	else SET_MAP_OB(op->map, op->x, op->y, op);
1327	/* since *below* originator, no need to update top */
1328	originator->below = op;
1329	} else {
1330	/* If there are other objects, then */
1331	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1332	object *last=NULL;
1333	/*	1318	*/
1334	* If there are multiple objects on this space, we do some trickier handling.	1319
1335	* We've already dealt with merging if appropriate.	1320	/* Have object 'fall below' other objects that block view.
1336	* Generally, we want to put the new object on top. But if	1321	* Unless those objects are exits, type 66
1337	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1322	* If INS_ON_TOP is used, don't do this processing
1338	* floor, we want to insert above that and no further.	1323	* Need to find the object that in fact blocks view, otherwise
1339	* Also, if there are spell objects on this space, we stop processing	1324	* stacking is a bit odd.
1340	* once we get to them. This reduces the need to traverse over all of	1325	*/
1341	* them when adding another one - this saves quite a bit of cpu time	1326	if (!(flag & INS_ON_TOP) &&
1342	* when lots of spells are cast in one area. Currently, it is presumed	1327	(get_map_flags (op->map, 0, op->x, op->y, 0, 0) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))
1343	* that flying non pickable objects are spell objects.	1328	{
		1329	for (last = top; last != floor; last = last->below)
		1330	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1331	break;
		1332	/* Check to see if we found the object that blocks view,
		1333	* and make sure we have a below pointer for it so that
		1334	* we can get inserted below this one, which requires we
		1335	* set top to the object below us.
1344	*/	1336	*/
1345		1337	if (last && last->below && last != floor)
1346	while (top != NULL) {
1347	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1348	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1349	if (QUERY_FLAG(top, FLAG_NO_PICK)
1350	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1351	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1352	{
1353	/* We insert above top, so we want this object below this */
1354	top=top->below;
1355	break;
1356	}
1357	last = top;
1358	top = top->above;	1338	top = last->below;
1359	}	1339	}
1360	/* Don't want top to be NULL, so set it to the last valid object */
1361	top = last;
1362
1363	/* We let update_position deal with figuring out what the space
1364	* looks like instead of lots of conditions here.
1365	* makes things faster, and effectively the same result.
1366	*/
1367
1368	/* Have object 'fall below' other objects that block view.
1369	* Unless those objects are exits, type 66
1370	* If INS_ON_TOP is used, don't do this processing
1371	* Need to find the object that in fact blocks view, otherwise
1372	* stacking is a bit odd.
1373	*/
1374	if (!(flag & INS_ON_TOP) &&
1375	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1376	(op->face && !op->face->visibility)) {
1377	for (last=top; last != floor; last=last->below)
1378	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1379	/* Check to see if we found the object that blocks view,
1380	* and make sure we have a below pointer for it so that
1381	* we can get inserted below this one, which requires we
1382	* set top to the object below us.
1383	*/
1384	if (last && last->below && last != floor) top=last->below;
1385	}
1386	} /* If objects on this space */	1340	} /* If objects on this space */
		1341
1387	if (flag & INS_MAP_LOAD)	1342	if (flag & INS_MAP_LOAD)
1388	top = GET_MAP_TOP(op->map,op->x,op->y);	1343	top = GET_MAP_TOP (op->map, op->x, op->y);
		1344
1389	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1345	if (flag & INS_ABOVE_FLOOR_ONLY)
		1346	top = floor;
1390		1347
1391	/* Top is the object that our object (op) is going to get inserted above.	1348	/* Top is the object that our object (op) is going to get inserted above.
1392	*/	1349	*/
1393		1350
1394	/* First object on this space */	1351	/* First object on this space */
1395	if (!top) {	1352	if (!top)
		1353	{
1396	op->above = GET_MAP_OB(op->map, op->x, op->y);	1354	op->above = GET_MAP_OB (op->map, op->x, op->y);
		1355
		1356	if (op->above)
1397	if (op->above) op->above->below = op;	1357	op->above->below = op;
		1358
1398	op->below = NULL;	1359	op->below = 0;
1399	SET_MAP_OB(op->map, op->x, op->y, op);	1360	op->ms ().bot = op;
		1361	}
		1362	else
1400	} else { /* get inserted into the stack above top */	1363	{ /* get inserted into the stack above top */
1401	op->above = top->above;	1364	op->above = top->above;
		1365
		1366	if (op->above)
1402	if (op->above) op->above->below = op;	1367	op->above->below = op;
		1368
1403	op->below = top;	1369	op->below = top;
1404	top->above = op;	1370	top->above = op;
1405	}	1371	}
		1372
1406	if (op->above==NULL)	1373	if (!op->above)
1407	SET_MAP_TOP(op->map,op->x, op->y, op);	1374	op->ms ().top = op;
1408	} /* else not INS_BELOW_ORIGINATOR */	1375	} /* else not INS_BELOW_ORIGINATOR */
1409		1376
1410	if(op->type==PLAYER)	1377	if (op->type == PLAYER)
		1378	{
1411	op->contr->do_los=1;	1379	op->contr->do_los = 1;
		1380	++op->map->players;
		1381	op->map->touch ();
		1382	}
1412		1383
		1384	op->map->dirty = true;
		1385
1413	/* If we have a floor, we know the player, if any, will be above	1386	/* If we have a floor, we know the player, if any, will be above
1414	* it, so save a few ticks and start from there.	1387	* it, so save a few ticks and start from there.
1415	*/	1388	*/
1416	if (!(flag & INS_MAP_LOAD))	1389	if (!(flag & INS_MAP_LOAD))
1417	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1390	if (object *pl = op->ms ().player ())
1418	if (tmp->type == PLAYER)	1391	if (pl->contr->ns)
1419	tmp->contr->socket.update_look=1;	1392	pl->contr->ns->floorbox_update ();
1420	}
1421		1393
1422	/* If this object glows, it may affect lighting conditions that are	1394	/* If this object glows, it may affect lighting conditions that are
1423	* visible to others on this map. But update_all_los is really	1395	* visible to others on this map. But update_all_los is really
1424	* an inefficient way to do this, as it means los for all players	1396	* an inefficient way to do this, as it means los for all players
1425	* on the map will get recalculated. The players could very well	1397	* on the map will get recalculated. The players could very well
1426	* be far away from this change and not affected in any way -	1398	* be far away from this change and not affected in any way -
1427	* this should get redone to only look for players within range,	1399	* this should get redone to only look for players within range,
1428	* or just updating the P_NEED_UPDATE for spaces within this area	1400	* or just updating the P_UPTODATE for spaces within this area
1429	* of effect may be sufficient.	1401	* of effect may be sufficient.
1430	*/	1402	*/
1431	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1403	if (op->map->darkness && (op->glow_radius != 0))
1432	update_all_los(op->map, op->x, op->y);	1404	update_all_los (op->map, op->x, op->y);
1433		1405
1434
1435	/* updates flags (blocked, alive, no magic, etc) for this map space */	1406	/* updates flags (blocked, alive, no magic, etc) for this map space */
1436	update_object(op,UP_OBJ_INSERT);	1407	update_object (op, UP_OBJ_INSERT);
1437		1408
		1409	INVOKE_OBJECT (INSERT, op);
1438		1410
1439	/* Don't know if moving this to the end will break anything. However,	1411	/* Don't know if moving this to the end will break anything. However,
1440	* we want to have update_look set above before calling this.	1412	* we want to have floorbox_update called before calling this.
1441	*	1413	*
1442	* check_move_on() must be after this because code called from	1414	* check_move_on() must be after this because code called from
1443	* check_move_on() depends on correct map flags (so functions like	1415	* check_move_on() depends on correct map flags (so functions like
1444	* blocked() and wall() work properly), and these flags are updated by	1416	* blocked() and wall() work properly), and these flags are updated by
1445	* update_object().	1417	* update_object().
1446	*/	1418	*/
1447		1419
1448	/* if this is not the head or flag has been passed, don't check walk on status */	1420	/* if this is not the head or flag has been passed, don't check walk on status */
1449
1450	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1421	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1422	{
1451	if (check_move_on(op, originator))	1423	if (check_move_on (op, originator))
1452	return NULL;	1424	return 0;
1453		1425
1454	/* If we are a multi part object, lets work our way through the check	1426	/* If we are a multi part object, lets work our way through the check
1455	* walk on's.	1427	* walk on's.
1456	*/	1428	*/
1457	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1429	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1458	if (check_move_on (tmp, originator))	1430	if (check_move_on (tmp, originator))
1459	return NULL;	1431	return 0;
1460	}	1432	}
		1433
1461	return op;	1434	return op;
1462	}	1435	}
1463		1436
1464	/* this function inserts an object in the map, but if it	1437	/* this function inserts an object in the map, but if it
1465	* finds an object of its own type, it'll remove that one first.	1438	* finds an object of its own type, it'll remove that one first.
1466	* op is the object to insert it under: supplies x and the map.	1439	* op is the object to insert it under: supplies x and the map.
1467	*/	1440	*/
		1441	void
1468	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1442	replace_insert_ob_in_map (const char *arch_string, object *op)
1469	object *tmp;	1443	{
1470	object *tmp1;	1444	object *tmp, *tmp1;
1471		1445
1472	/* first search for itself and remove any old instances */	1446	/* first search for itself and remove any old instances */
1473		1447
1474	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1448	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)
1475	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1449	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1476	remove_ob(tmp);	1450	tmp->destroy ();
1477	free_object(tmp);
1478	}
1479	}
1480		1451
1481	tmp1=arch_to_object(find_archetype(arch_string));	1452	tmp1 = arch_to_object (archetype::find (arch_string));
1482		1453
1483		1454	tmp1->x = op->x;
1484	tmp1->x = op->x; tmp1->y = op->y;	1455	tmp1->y = op->y;
1485	insert_ob_in_map(tmp1,op->map,op,0);	1456	insert_ob_in_map (tmp1, op->map, op, 0);
1486	}	1457	}
		1458
		1459	object *
		1460	object::insert_at (object *where, object *originator, int flags)
		1461	{
		1462	where->map->insert (this, where->x, where->y, originator, flags);
		1463	}
1487		1464
1488	/*	1465	/*
1489	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1466	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1490	* is returned contains nr objects, and the remaining parts contains	1467	* is returned contains nr objects, and the remaining parts contains
1491	* the rest (or is removed and freed if that number is 0).	1468	* the rest (or is removed and freed if that number is 0).
1492	* On failure, NULL is returned, and the reason put into the	1469	* On failure, NULL is returned, and the reason put into the
1493	* global static errmsg array.	1470	* global static errmsg array.
1494	*/	1471	*/
1495		1472	object *
1496	object *get_split_ob(object *orig_ob, uint32 nr) {	1473	get_split_ob (object *orig_ob, uint32 nr)
		1474	{
1497	object *newob;	1475	object *newob;
1498	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1476	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1499		1477
1500	if(orig_ob->nrof<nr) {	1478	if (orig_ob->nrof < nr)
1501	sprintf(errmsg,"There are only %d %ss.",	1479	{
1502	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1480	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1503	return NULL;	1481	return NULL;
1504	}	1482	}
		1483
1505	newob = object_create_clone(orig_ob);	1484	newob = object_create_clone (orig_ob);
		1485
1506	if((orig_ob->nrof-=nr)<1) {	1486	if ((orig_ob->nrof -= nr) < 1)
1507	if ( ! is_removed)	1487	orig_ob->destroy (1);
1508	remove_ob(orig_ob);
1509	free_object2(orig_ob, 1);
1510	}
1511	else if ( ! is_removed) {	1488	else if (!is_removed)
		1489	{
1512	if(orig_ob->env!=NULL)	1490	if (orig_ob->env != NULL)
1513	sub_weight (orig_ob->env,orig_ob->weight*nr);	1491	sub_weight (orig_ob->env, orig_ob->weight * nr);
1514	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1492	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1493	{
1515	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1494	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1516	LOG(llevDebug,
1517	"Error, Tried to split object whose map is not in memory.\n");	1495	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1518	return NULL;	1496	return NULL;
1519	}	1497	}
1520	}	1498	}
		1499
1521	newob->nrof=nr;	1500	newob->nrof = nr;
1522		1501
1523	return newob;	1502	return newob;
1524	}	1503	}
1525		1504
1526	/*	1505	/*
1527	* decrease_ob_nr(object, number) decreases a specified number from	1506	* decrease_ob_nr(object, number) decreases a specified number from
1528	* the amount of an object. If the amount reaches 0, the object	1507	* the amount of an object. If the amount reaches 0, the object
1529	* is subsequently removed and freed.	1508	* is subsequently removed and freed.
1530	*	1509	*
1531	* Return value: 'op' if something is left, NULL if the amount reached 0	1510	* Return value: 'op' if something is left, NULL if the amount reached 0
1532	*/	1511	*/
1533		1512
		1513	object *
1534	object *decrease_ob_nr (object *op, uint32 i)	1514	decrease_ob_nr (object *op, uint32 i)
1535	{	1515	{
1536	object *tmp;	1516	object *tmp;
1537	player *pl;
1538		1517
1539	if (i == 0) /* objects with op->nrof require this check */	1518	if (i == 0) /* objects with op->nrof require this check */
1540	return op;	1519	return op;
1541		1520
1542	if (i > op->nrof)	1521	if (i > op->nrof)
1543	i = op->nrof;	1522	i = op->nrof;
1544		1523
1545	if (QUERY_FLAG (op, FLAG_REMOVED))	1524	if (QUERY_FLAG (op, FLAG_REMOVED))
		1525	op->nrof -= i;
		1526	else if (op->env)
		1527	{
		1528	/* is this object in the players inventory, or sub container
		1529	* therein?
		1530	*/
		1531	tmp = op->in_player ();
		1532	/* nope. Is this a container the player has opened?
		1533	* If so, set tmp to that player.
		1534	* IMO, searching through all the players will mostly
		1535	* likely be quicker than following op->env to the map,
		1536	* and then searching the map for a player.
		1537	*/
		1538	if (!tmp)
		1539	for_all_players (pl)
		1540	if (pl->ob->container == op->env)
		1541	{
		1542	tmp = pl->ob;
		1543	break;
		1544	}
		1545
		1546	if (i < op->nrof)
		1547	{
		1548	sub_weight (op->env, op->weight * i);
		1549	op->nrof -= i;
		1550	if (tmp)
		1551	esrv_send_item (tmp, op);
		1552	}
		1553	else
		1554	{
		1555	op->remove ();
		1556	op->nrof = 0;
		1557	if (tmp)
		1558	esrv_del_item (tmp->contr, op->count);
		1559	}
1546	{	1560	}
		1561	else
		1562	{
		1563	object *above = op->above;
		1564
		1565	if (i < op->nrof)
1547	op->nrof -= i;	1566	op->nrof -= i;
1548	}	1567	else
1549	else if (op->env != NULL)
1550	{
1551	/* is this object in the players inventory, or sub container
1552	* therein?
1553	*/
1554	tmp = is_player_inv (op->env);
1555	/* nope. Is this a container the player has opened?
1556	* If so, set tmp to that player.
1557	* IMO, searching through all the players will mostly
1558	* likely be quicker than following op->env to the map,
1559	* and then searching the map for a player.
1560	*/
1561	if (!tmp) {
1562	for (pl=first_player; pl; pl=pl->next)
1563	if (pl->ob->container == op->env) break;
1564	if (pl) tmp=pl->ob;
1565	else tmp=NULL;
1566	}	1568	{
1567
1568	if (i < op->nrof) {
1569	sub_weight (op->env, op->weight * i);
1570	op->nrof -= i;
1571	if (tmp) {
1572	esrv_send_item(tmp, op);
1573	}
1574	} else {
1575	remove_ob (op);	1569	op->remove ();
1576	op->nrof = 0;	1570	op->nrof = 0;
1577	if (tmp) {
1578	esrv_del_item(tmp->contr, op->count);
1579	}	1571	}
1580	}
1581	}
1582	else
1583	{
1584	object *above = op->above;
1585		1572
1586	if (i < op->nrof) {
1587	op->nrof -= i;
1588	} else {
1589	remove_ob (op);
1590	op->nrof = 0;
1591	}
1592	/* Since we just removed op, op->above is null */	1573	/* Since we just removed op, op->above is null */
1593	for (tmp = above; tmp != NULL; tmp = tmp->above)	1574	for (tmp = above; tmp; tmp = tmp->above)
1594	if (tmp->type == PLAYER) {	1575	if (tmp->type == PLAYER)
		1576	{
1595	if (op->nrof)	1577	if (op->nrof)
1596	esrv_send_item(tmp, op);	1578	esrv_send_item (tmp, op);
1597	else	1579	else
1598	esrv_del_item(tmp->contr, op->count);	1580	esrv_del_item (tmp->contr, op->count);
1599	}	1581	}
1600	}	1582	}
1601		1583
1602	if (op->nrof) {	1584	if (op->nrof)
1603	return op;	1585	return op;
1604	} else {	1586	else
1605	free_object (op);	1587	{
		1588	op->destroy ();
1606	return NULL;	1589	return 0;
1607	}	1590	}
1608	}	1591	}
1609		1592
1610	/*	1593	/*
1611	* add_weight(object, weight) adds the specified weight to an object,	1594	* add_weight(object, weight) adds the specified weight to an object,
1612	* and also updates how much the environment(s) is/are carrying.	1595	* and also updates how much the environment(s) is/are carrying.
1613	*/	1596	*/
1614		1597
		1598	void
1615	void add_weight (object *op, signed long weight) {	1599	add_weight (object *op, signed long weight)
		1600	{
1616	while (op!=NULL) {	1601	while (op != NULL)
		1602	{
1617	if (op->type == CONTAINER) {	1603	if (op->type == CONTAINER)
1618	weight=(signed long)(weight*(100-op->stats.Str)/100);	1604	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1619	}	1605
1620	op->carrying+=weight;	1606	op->carrying += weight;
1621	op=op->env;	1607	op = op->env;
1622	}	1608	}
1623	}	1609	}
1624		1610
		1611	object *
		1612	insert_ob_in_ob (object *op, object *where)
		1613	{
		1614	if (!where)
		1615	{
		1616	char *dump = dump_object (op);
		1617	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1618	free (dump);
		1619	return op;
		1620	}
		1621
		1622	if (where->head)
		1623	{
		1624	LOG (llevDebug, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1625	where = where->head;
		1626	}
		1627
		1628	return where->insert (op);
		1629	}
		1630
1625	/*	1631	/*
1626	* insert_ob_in_ob(op,environment):	1632	* env->insert (op)
1627	* This function inserts the object op in the linked list	1633	* This function inserts the object op in the linked list
1628	* inside the object environment.	1634	* inside the object environment.
1629	*	1635	*
1630	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1631	* the inventory at the last position or next to other objects of the same
1632	* type.
1633	* Frank: Now sorted by type, archetype and magic!
1634	*
1635	* The function returns now pointer to inserted item, and return value can	1636	* The function returns now pointer to inserted item, and return value can
1636	* be != op, if items are merged. -Tero	1637	* be != op, if items are merged. -Tero
1637	*/	1638	*/
1638		1639
1639	object *insert_ob_in_ob(object *op,object *where) {	1640	object *
		1641	object::insert (object *op)
		1642	{
1640	object *tmp, *otmp;	1643	object *tmp, *otmp;
1641		1644
1642	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1645	if (!QUERY_FLAG (op, FLAG_REMOVED))
1643	dump_object(op);	1646	op->remove ();
1644	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1647
1645	return op;
1646	}
1647	if(where==NULL) {
1648	dump_object(op);
1649	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1650	return op;
1651	}
1652	if (where->head) {
1653	LOG(llevDebug,
1654	"Warning: Tried to insert object wrong part of multipart object.\n");
1655	where = where->head;
1656	}
1657	if (op->more) {	1648	if (op->more)
		1649	{
1658	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1650	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1659	&op->name, op->count);
1660	return op;	1651	return op;
1661	}	1652	}
		1653
1662	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1654	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1663	CLEAR_FLAG(op, FLAG_REMOVED);	1655	CLEAR_FLAG (op, FLAG_REMOVED);
1664	if(op->nrof) {	1656	if (op->nrof)
		1657	{
1665	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1658	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1666	if ( CAN_MERGE(tmp,op) ) {	1659	if (object::can_merge (tmp, op))
		1660	{
1667	/* return the original object and remove inserted object	1661	/* return the original object and remove inserted object
1668	(client needs the original object) */	1662	(client needs the original object) */
1669	tmp->nrof += op->nrof;	1663	tmp->nrof += op->nrof;
1670	/* Weight handling gets pretty funky. Since we are adding to	1664	/* Weight handling gets pretty funky. Since we are adding to
1671	* tmp->nrof, we need to increase the weight.	1665	* tmp->nrof, we need to increase the weight.
1672	*/	1666	*/
1673	add_weight (where, op->weight*op->nrof);	1667	add_weight (this, op->weight * op->nrof);
1674	SET_FLAG(op, FLAG_REMOVED);	1668	SET_FLAG (op, FLAG_REMOVED);
1675	free_object(op); /* free the inserted object */	1669	op->destroy (); /* free the inserted object */
1676	op = tmp;	1670	op = tmp;
1677	remove_ob (op); /* and fix old object's links */	1671	op->remove (); /* and fix old object's links */
1678	CLEAR_FLAG(op, FLAG_REMOVED);	1672	CLEAR_FLAG (op, FLAG_REMOVED);
1679	break;	1673	break;
1680	}	1674	}
1681		1675
1682	/* I assume combined objects have no inventory	1676	/* I assume combined objects have no inventory
1683	* We add the weight - this object could have just been removed	1677	* We add the weight - this object could have just been removed
1684	* (if it was possible to merge). calling remove_ob will subtract	1678	* (if it was possible to merge). calling remove_ob will subtract
1685	* the weight, so we need to add it in again, since we actually do	1679	* the weight, so we need to add it in again, since we actually do
1686	* the linking below	1680	* the linking below
1687	*/	1681	*/
1688	add_weight (where, op->weight*op->nrof);	1682	add_weight (this, op->weight * op->nrof);
		1683	}
1689	} else	1684	else
1690	add_weight (where, (op->weight+op->carrying));	1685	add_weight (this, (op->weight + op->carrying));
1691		1686
1692	otmp=is_player_inv(where);	1687	otmp = this->in_player ();
1693	if (otmp&&otmp->contr!=NULL) {	1688	if (otmp && otmp->contr)
1694	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1689	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1695	fix_player(otmp);	1690	otmp->update_stats ();
1696	}
1697		1691
1698	op->map=NULL;	1692	op->map = 0;
1699	op->env=where;	1693	op->env = this;
1700	op->above=NULL;	1694	op->above = 0;
1701	op->below=NULL;	1695	op->below = 0;
1702	op->x=0,op->y=0;	1696	op->x = 0, op->y = 0;
1703		1697
1704	/* reset the light list and los of the players on the map */	1698	/* reset the light list and los of the players on the map */
1705	if((op->glow_radius!=0)&&where->map)	1699	if ((op->glow_radius != 0) && map)
1706	{	1700	{
1707	#ifdef DEBUG_LIGHTS	1701	#ifdef DEBUG_LIGHTS
1708	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1702	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1709	op->name);
1710	#endif /* DEBUG_LIGHTS */	1703	#endif /* DEBUG_LIGHTS */
1711	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1704	if (map->darkness)
		1705	update_all_los (map, x, y);
1712	}	1706	}
1713		1707
1714	/* Client has no idea of ordering so lets not bother ordering it here.	1708	/* Client has no idea of ordering so lets not bother ordering it here.
1715	* It sure simplifies this function...	1709	* It sure simplifies this function...
1716	*/	1710	*/
1717	if (where->inv==NULL)	1711	if (!inv)
1718	where->inv=op;	1712	inv = op;
1719	else {	1713	else
		1714	{
1720	op->below = where->inv;	1715	op->below = inv;
1721	op->below->above = op;	1716	op->below->above = op;
1722	where->inv = op;	1717	inv = op;
1723	}	1718	}
		1719
		1720	INVOKE_OBJECT (INSERT, this);
		1721
1724	return op;	1722	return op;
1725	}	1723	}
1726		1724
1727	/*	1725	/*
1728	* Checks if any objects has a move_type that matches objects	1726	* Checks if any objects has a move_type that matches objects
…		…
1742	*	1740	*
1743	* MSW 2001-07-08: Check all objects on space, not just those below	1741	* MSW 2001-07-08: Check all objects on space, not just those below
1744	* object being inserted. insert_ob_in_map may not put new objects	1742	* object being inserted. insert_ob_in_map may not put new objects
1745	* on top.	1743	* on top.
1746	*/	1744	*/
1747		1745	int
1748	int check_move_on (object *op, object *originator)	1746	check_move_on (object *op, object *originator)
1749	{	1747	{
1750	object *tmp;	1748	object *tmp;
1751	tag_t tag;
1752	mapstruct *m=op->map;	1749	maptile *m = op->map;
1753	int x=op->x, y=op->y;	1750	int x = op->x, y = op->y;
		1751
1754	MoveType move_on, move_slow, move_block;	1752	MoveType move_on, move_slow, move_block;
1755		1753
1756	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1754	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1757	return 0;	1755	return 0;
1758		1756
1759	tag = op->count;
1760
1761	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1757	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1762	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1758	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1763	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1759	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1764		1760
1765	/* if nothing on this space will slow op down or be applied,	1761	/* if nothing on this space will slow op down or be applied,
1766	* no need to do checking below. have to make sure move_type	1762	* no need to do checking below. have to make sure move_type
1767	* is set, as lots of objects don't have it set - we treat that	1763	* is set, as lots of objects don't have it set - we treat that
1768	* as walking.	1764	* as walking.
1769	*/	1765	*/
1770	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1766	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1771	return 0;	1767	return 0;
1772		1768
1773	/* This is basically inverse logic of that below - basically,	1769	/* This is basically inverse logic of that below - basically,
1774	* if the object can avoid the move on or slow move, they do so,	1770	* if the object can avoid the move on or slow move, they do so,
1775	* but can't do it if the alternate movement they are using is	1771	* but can't do it if the alternate movement they are using is
1776	* blocked. Logic on this seems confusing, but does seem correct.	1772	* blocked. Logic on this seems confusing, but does seem correct.
1777	*/	1773	*/
1778	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1774	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1779	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1775	return 0;
1780		1776
1781	/* The objects have to be checked from top to bottom.	1777	/* The objects have to be checked from top to bottom.
1782	* Hence, we first go to the top:	1778	* Hence, we first go to the top:
1783	*/	1779	*/
1784		1780
1785	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1781	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp && tmp->above; tmp = tmp->above)
1786	tmp->above!=NULL; tmp=tmp->above) {	1782	{
1787	/* Trim the search when we find the first other spell effect	1783	/* Trim the search when we find the first other spell effect
1788	* this helps performance so that if a space has 50 spell objects,	1784	* this helps performance so that if a space has 50 spell objects,
1789	* we don't need to check all of them.	1785	* we don't need to check all of them.
1790	*/	1786	*/
1791	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1787	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1788	break;
		1789	}
		1790
		1791	for (; tmp; tmp = tmp->below)
1792	}	1792	{
1793	for(;tmp!=NULL; tmp=tmp->below) {	1793	if (tmp == op)
1794	if (tmp == op) continue; /* Can't apply yourself */	1794	continue; /* Can't apply yourself */
1795		1795
1796	/* Check to see if one of the movement types should be slowed down.	1796	/* Check to see if one of the movement types should be slowed down.
1797	* Second check makes sure that the movement types not being slowed	1797	* Second check makes sure that the movement types not being slowed
1798	* (~slow_move) is not blocked on this space - just because the	1798	* (~slow_move) is not blocked on this space - just because the
1799	* space doesn't slow down swimming (for example), if you can't actually	1799	* space doesn't slow down swimming (for example), if you can't actually
1800	* swim on that space, can't use it to avoid the penalty.	1800	* swim on that space, can't use it to avoid the penalty.
1801	*/	1801	*/
1802	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1802	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1803	{
1803	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1804	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1804	((op->move_type & tmp->move_slow) &&
1805	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1805	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1806	{
1806		1807
1807	float diff;	1808	float
1808
1809	diff = tmp->move_slow_penalty*FABS(op->speed);	1809	diff = tmp->move_slow_penalty * FABS (op->speed);
		1810
1810	if (op->type == PLAYER) {	1811	if (op->type == PLAYER)
1811	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1812	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1812	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1813	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1813	diff /= 4.0;	1814	diff /= 4.0;
1814	}	1815
1815	}
1816	op->speed_left -= diff;	1816	op->speed_left -= diff;
1817	}	1817	}
1818	}	1818	}
1819		1819
1820	/* Basically same logic as above, except now for actual apply. */	1820	/* Basically same logic as above, except now for actual apply. */
1821	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1821	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1822	((op->move_type & tmp->move_on) &&
1823	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1822	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1824		1823	{
1825	move_apply(tmp, op, originator);	1824	move_apply (tmp, op, originator);
		1825
1826	if (was_destroyed (op, tag))	1826	if (op->destroyed ())
1827	return 1;	1827	return 1;
1828		1828
1829	/* what the person/creature stepped onto has moved the object	1829	/* what the person/creature stepped onto has moved the object
1830	* someplace new. Don't process any further - if we did,	1830	* someplace new. Don't process any further - if we did,
1831	* have a feeling strange problems would result.	1831	* have a feeling strange problems would result.
1832	*/	1832	*/
1833	if (op->map != m || op->x != x || op->y != y) return 0;	1833	if (op->map != m || op->x != x || op->y != y)
		1834	return 0;
1834	}	1835	}
1835	}	1836	}
		1837
1836	return 0;	1838	return 0;
1837	}	1839	}
1838		1840
1839	/*	1841	/*
1840	* present_arch(arch, map, x, y) searches for any objects with	1842	* present_arch(arch, map, x, y) searches for any objects with
1841	* a matching archetype at the given map and coordinates.	1843	* a matching archetype at the given map and coordinates.
1842	* The first matching object is returned, or NULL if none.	1844	* The first matching object is returned, or NULL if none.
1843	*/	1845	*/
1844		1846	object *
1845	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1847	present_arch (const archetype *at, maptile *m, int x, int y)
1846	object *tmp;	1848	{
1847	if(m==NULL || out_of_map(m,x,y)) {	1849	if (m == NULL || out_of_map (m, x, y))
		1850	{
1848	LOG(llevError,"Present_arch called outside map.\n");	1851	LOG (llevError, "Present_arch called outside map.\n");
1849	return NULL;	1852	return NULL;
1850	}	1853	}
		1854
1851	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1855	for (object *tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1852	if(tmp->arch == at)	1856	if (tmp->arch == at)
1853	return tmp;	1857	return tmp;
		1858
1854	return NULL;	1859	return NULL;
1855	}	1860	}
1856		1861
1857	/*	1862	/*
1858	* present(type, map, x, y) searches for any objects with	1863	* present(type, map, x, y) searches for any objects with
1859	* a matching type variable at the given map and coordinates.	1864	* a matching type variable at the given map and coordinates.
1860	* The first matching object is returned, or NULL if none.	1865	* The first matching object is returned, or NULL if none.
1861	*/	1866	*/
1862		1867	object *
1863	object *present(unsigned char type,mapstruct *m, int x,int y) {	1868	present (unsigned char type, maptile *m, int x, int y)
1864	object *tmp;	1869	{
1865	if(out_of_map(m,x,y)) {	1870	if (out_of_map (m, x, y))
		1871	{
1866	LOG(llevError,"Present called outside map.\n");	1872	LOG (llevError, "Present called outside map.\n");
1867	return NULL;	1873	return NULL;
1868	}	1874	}
		1875
1869	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1876	for (object *tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1870	if(tmp->type==type)	1877	if (tmp->type == type)
1871	return tmp;	1878	return tmp;
		1879
1872	return NULL;	1880	return NULL;
1873	}	1881	}
1874		1882
1875	/*	1883	/*
1876	* present_in_ob(type, object) searches for any objects with	1884	* present_in_ob(type, object) searches for any objects with
1877	* a matching type variable in the inventory of the given object.	1885	* a matching type variable in the inventory of the given object.
1878	* The first matching object is returned, or NULL if none.	1886	* The first matching object is returned, or NULL if none.
1879	*/	1887	*/
1880		1888	object *
1881	object *present_in_ob(unsigned char type, const object *op) {	1889	present_in_ob (unsigned char type, const object *op)
1882	object *tmp;	1890	{
1883	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1891	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1884	if(tmp->type==type)	1892	if (tmp->type == type)
1885	return tmp;	1893	return tmp;
		1894
1886	return NULL;	1895	return NULL;
1887	}	1896	}
1888		1897
1889	/*	1898	/*
1890	* present_in_ob (type, str, object) searches for any objects with	1899	* present_in_ob (type, str, object) searches for any objects with
…		…
1898	* str is the string to match against. Note that we match against	1907	* str is the string to match against. Note that we match against
1899	* the object name, not the archetype name. this is so that the	1908	* the object name, not the archetype name. this is so that the
1900	* spell code can use one object type (force), but change it's name	1909	* spell code can use one object type (force), but change it's name
1901	* to be unique.	1910	* to be unique.
1902	*/	1911	*/
1903		1912	object *
1904	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1913	present_in_ob_by_name (int type, const char *str, const object *op)
1905	object *tmp;	1914	{
1906
1907	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1915	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1908	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1916	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1909	return tmp;	1917	return tmp;
1910	}	1918
1911	return NULL;	1919	return 0;
1912	}	1920	}
1913		1921
1914	/*	1922	/*
1915	* present_arch_in_ob(archetype, object) searches for any objects with	1923	* present_arch_in_ob(archetype, object) searches for any objects with
1916	* a matching archetype in the inventory of the given object.	1924	* a matching archetype in the inventory of the given object.
1917	* The first matching object is returned, or NULL if none.	1925	* The first matching object is returned, or NULL if none.
1918	*/	1926	*/
1919		1927	object *
1920	object *present_arch_in_ob(const archetype *at, const object *op) {	1928	present_arch_in_ob (const archetype *at, const object *op)
1921	object *tmp;	1929	{
1922	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1930	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1923	if( tmp->arch == at)	1931	if (tmp->arch == at)
1924	return tmp;	1932	return tmp;
		1933
1925	return NULL;	1934	return NULL;
1926	}	1935	}
1927		1936
1928	/*	1937	/*
1929	* activate recursively a flag on an object inventory	1938	* activate recursively a flag on an object inventory
1930	*/	1939	*/
		1940	void
1931	void flag_inv(object*op, int flag){	1941	flag_inv (object *op, int flag)
1932	object *tmp;	1942	{
1933	if(op->inv)	1943	if (op->inv)
1934	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1944	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1945	{
1935	SET_FLAG(tmp, flag);	1946	SET_FLAG (tmp, flag);
1936	flag_inv(tmp,flag);	1947	flag_inv (tmp, flag);
1937	}	1948	}
		1949	}
		1950
1938	}/*	1951	/*
1939	* desactivate recursively a flag on an object inventory	1952	* deactivate recursively a flag on an object inventory
1940	*/	1953	*/
		1954	void
1941	void unflag_inv(object*op, int flag){	1955	unflag_inv (object *op, int flag)
1942	object *tmp;	1956	{
1943	if(op->inv)	1957	if (op->inv)
1944	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1958	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1959	{
1945	CLEAR_FLAG(tmp, flag);	1960	CLEAR_FLAG (tmp, flag);
1946	unflag_inv(tmp,flag);	1961	unflag_inv (tmp, flag);
1947	}	1962	}
1948	}	1963	}
1949		1964
1950	/*	1965	/*
1951	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in	1966	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1952	* all it's inventory (recursively).	1967	* all it's inventory (recursively).
1953	* If checksums are used, a player will get set_cheat called for	1968	* If checksums are used, a player will get set_cheat called for
1954	* him/her-self and all object carried by a call to this function.	1969	* him/her-self and all object carried by a call to this function.
1955	*/	1970	*/
1956		1971	void
1957	void set_cheat(object *op) {	1972	set_cheat (object *op)
		1973	{
1958	SET_FLAG(op, FLAG_WAS_WIZ);	1974	SET_FLAG (op, FLAG_WAS_WIZ);
1959	flag_inv(op, FLAG_WAS_WIZ);	1975	flag_inv (op, FLAG_WAS_WIZ);
1960	}	1976	}
1961		1977
1962	/*	1978	/*
1963	* find_free_spot(object, map, x, y, start, stop) will search for	1979	* find_free_spot(object, map, x, y, start, stop) will search for
1964	* a spot at the given map and coordinates which will be able to contain	1980	* a spot at the given map and coordinates which will be able to contain
…		…
1978	* because arch_blocked (now ob_blocked) needs to know the movement type	1994	* because arch_blocked (now ob_blocked) needs to know the movement type
1979	* to know if the space in question will block the object. We can't use	1995	* to know if the space in question will block the object. We can't use
1980	* the archetype because that isn't correct if the monster has been	1996	* the archetype because that isn't correct if the monster has been
1981	* customized, changed states, etc.	1997	* customized, changed states, etc.
1982	*/	1998	*/
1983		1999	int
1984	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2000	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2001	{
1985	int i,index=0, flag;	2002	int index = 0, flag;
1986	static int altern[SIZEOFFREE];	2003	int altern[SIZEOFFREE];
1987		2004
1988	for(i=start;i<stop;i++) {	2005	for (int i = start; i < stop; i++)
		2006	{
1989	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2007	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
1990	if(!flag)	2008	if (!flag)
1991	altern[index++]=i;	2009	altern [index++] = i;
1992		2010
1993	/* Basically, if we find a wall on a space, we cut down the search size.	2011	/* Basically, if we find a wall on a space, we cut down the search size.
1994	* In this way, we won't return spaces that are on another side of a wall.	2012	* In this way, we won't return spaces that are on another side of a wall.
1995	* This mostly work, but it cuts down the search size in all directions -	2013	* This mostly work, but it cuts down the search size in all directions -
1996	* if the space being examined only has a wall to the north and empty	2014	* if the space being examined only has a wall to the north and empty
1997	* spaces in all the other directions, this will reduce the search space	2015	* spaces in all the other directions, this will reduce the search space
1998	* to only the spaces immediately surrounding the target area, and	2016	* to only the spaces immediately surrounding the target area, and
1999	* won't look 2 spaces south of the target space.	2017	* won't look 2 spaces south of the target space.
2000	*/	2018	*/
2001	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2019	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2002	stop=maxfree[i];	2020	stop = maxfree[i];
2003	}	2021	}
2004	if(!index) return -1;	2022
		2023	if (!index)
		2024	return -1;
		2025
2005	return altern[RANDOM()%index];	2026	return altern[RANDOM () % index];
2006	}	2027	}
2007		2028
2008	/*	2029	/*
2009	* find_first_free_spot(archetype, mapstruct, x, y) works like	2030	* find_first_free_spot(archetype, maptile, x, y) works like
2010	* find_free_spot(), but it will search max number of squares.	2031	* find_free_spot(), but it will search max number of squares.
2011	* But it will return the first available spot, not a random choice.	2032	* But it will return the first available spot, not a random choice.
2012	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2033	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2013	*/	2034	*/
2014		2035	int
2015	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2036	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2016	int i;	2037	{
2017	for(i=0;i<SIZEOFFREE;i++) {	2038	for (int i = 0; i < SIZEOFFREE; i++)
2018	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2039	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2019	return i;	2040	return i;
2020	}	2041
2021	return -1;	2042	return -1;
2022	}	2043	}
2023		2044
2024	/*	2045	/*
2025	* The function permute(arr, begin, end) randomly reorders the array	2046	* The function permute(arr, begin, end) randomly reorders the array
2026	* arr[begin..end-1].	2047	* arr[begin..end-1].
		2048	* now uses a fisher-yates shuffle, old permute was broken
2027	*/	2049	*/
		2050	static void
2028	static void permute(int *arr, int begin, int end)	2051	permute (int *arr, int begin, int end)
2029	{	2052	{
2030	int i, j, tmp, len;	2053	arr += begin;
		2054	end -= begin;
2031		2055
2032	len = end-begin;	2056	while (--end)
2033	for(i = begin; i < end; i++)	2057	swap (arr [end], arr [RANDOM () % (end + 1)]);
2034	{
2035	j = begin+RANDOM()%len;
2036
2037	tmp = arr[i];
2038	arr[i] = arr[j];
2039	arr[j] = tmp;
2040	}
2041	}	2058	}
2042		2059
2043	/* new function to make monster searching more efficient, and effective!	2060	/* new function to make monster searching more efficient, and effective!
2044	* This basically returns a randomized array (in the passed pointer) of	2061	* This basically returns a randomized array (in the passed pointer) of
2045	* the spaces to find monsters. In this way, it won't always look for	2062	* the spaces to find monsters. In this way, it won't always look for
2046	* monsters to the north first. However, the size of the array passed	2063	* monsters to the north first. However, the size of the array passed
2047	* covers all the spaces, so within that size, all the spaces within	2064	* covers all the spaces, so within that size, all the spaces within
2048	* the 3x3 area will be searched, just not in a predictable order.	2065	* the 3x3 area will be searched, just not in a predictable order.
2049	*/	2066	*/
		2067	void
2050	void get_search_arr(int *search_arr)	2068	get_search_arr (int *search_arr)
2051	{	2069	{
2052	int i;	2070	int i;
2053		2071
2054	for(i = 0; i < SIZEOFFREE; i++)	2072	for (i = 0; i < SIZEOFFREE; i++)
2055	{
2056	search_arr[i] = i;	2073	search_arr[i] = i;
2057	}
2058		2074
2059	permute(search_arr, 1, SIZEOFFREE1+1);	2075	permute (search_arr, 1, SIZEOFFREE1 + 1);
2060	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2076	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2061	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2077	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2062	}	2078	}
2063		2079
2064	/*	2080	/*
2065	* find_dir(map, x, y, exclude) will search some close squares in the	2081	* find_dir(map, x, y, exclude) will search some close squares in the
2066	* given map at the given coordinates for live objects.	2082	* given map at the given coordinates for live objects.
…		…
2071	* Perhaps incorrectly, but I'm making the assumption that exclude	2087	* Perhaps incorrectly, but I'm making the assumption that exclude
2072	* is actually want is going to try and move there. We need this info	2088	* is actually want is going to try and move there. We need this info
2073	* because we have to know what movement the thing looking to move	2089	* because we have to know what movement the thing looking to move
2074	* there is capable of.	2090	* there is capable of.
2075	*/	2091	*/
2076		2092	int
2077	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2093	find_dir (maptile *m, int x, int y, object *exclude)
		2094	{
2078	int i,max=SIZEOFFREE, mflags;	2095	int i, max = SIZEOFFREE, mflags;
		2096
2079	sint16 nx, ny;	2097	sint16 nx, ny;
2080	object *tmp;	2098	object *tmp;
2081	mapstruct *mp;	2099	maptile *mp;
		2100
2082	MoveType blocked, move_type;	2101	MoveType blocked, move_type;
2083		2102
2084	if (exclude && exclude->head) {	2103	if (exclude && exclude->head)
		2104	{
2085	exclude = exclude->head;	2105	exclude = exclude->head;
2086	move_type = exclude->move_type;	2106	move_type = exclude->move_type;
2087	} else {	2107	}
		2108	else
		2109	{
2088	/* If we don't have anything, presume it can use all movement types. */	2110	/* If we don't have anything, presume it can use all movement types. */
2089	move_type=MOVE_ALL;	2111	move_type = MOVE_ALL;
		2112	}
		2113
		2114	for (i = 1; i < max; i++)
2090	}	2115	{
2091
2092	for(i=1;i<max;i++) {
2093	mp = m;	2116	mp = m;
2094	nx = x + freearr_x[i];	2117	nx = x + freearr_x[i];
2095	ny = y + freearr_y[i];	2118	ny = y + freearr_y[i];
2096		2119
2097	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2120	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2121
2098	if (mflags & P_OUT_OF_MAP) {	2122	if (mflags & P_OUT_OF_MAP)
		2123	max = maxfree[i];
		2124	else
		2125	{
		2126	mapspace &ms = mp->at (nx, ny);
		2127
		2128	blocked = ms.move_block;
		2129
		2130	if ((move_type & blocked) == move_type)
2099	max = maxfree[i];	2131	max = maxfree[i];
2100	} else {
2101	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2102
2103	if ((move_type & blocked) == move_type) {
2104	max=maxfree[i];
2105	} else if (mflags & P_IS_ALIVE) {	2132	else if (mflags & P_IS_ALIVE)
2106	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2133	{
		2134	for (tmp = ms.bot; tmp; tmp = tmp->above)
2107	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2135	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2108	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2136	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2109	break;	2137	break;
2110	}	2138
2111	}
2112	if(tmp) {	2139	if (tmp)
2113	return freedir[i];	2140	return freedir[i];
2114	}
2115	}	2141	}
2116	}	2142	}
2117	}	2143	}
		2144
2118	return 0;	2145	return 0;
2119	}	2146	}
2120		2147
2121	/*	2148	/*
2122	* distance(object 1, object 2) will return the square of the	2149	* distance(object 1, object 2) will return the square of the
2123	* distance between the two given objects.	2150	* distance between the two given objects.
2124	*/	2151	*/
2125		2152	int
2126	int distance(const object *ob1, const object *ob2) {	2153	distance (const object *ob1, const object *ob2)
2127	int i;	2154	{
2128	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2155	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2129	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2130	return i;
2131	}	2156	}
2132		2157
2133	/*	2158	/*
2134	* find_dir_2(delta-x,delta-y) will return a direction in which	2159	* find_dir_2(delta-x,delta-y) will return a direction in which
2135	* an object which has subtracted the x and y coordinates of another	2160	* an object which has subtracted the x and y coordinates of another
2136	* object, needs to travel toward it.	2161	* object, needs to travel toward it.
2137	*/	2162	*/
2138		2163	int
2139	int find_dir_2(int x, int y) {	2164	find_dir_2 (int x, int y)
		2165	{
2140	int q;	2166	int q;
2141		2167
2142	if(y)	2168	if (y)
2143	q=x*100/y;	2169	q = x * 100 / y;
2144	else if (x)	2170	else if (x)
2145	q= -300*x;	2171	q = -300 * x;
2146	else	2172	else
2147	return 0;	2173	return 0;
2148		2174
2149	if(y>0) {	2175	if (y > 0)
		2176	{
2150	if(q < -242)	2177	if (q < -242)
2151	return 3 ;	2178	return 3;
2152	if (q < -41)	2179	if (q < -41)
2153	return 2 ;	2180	return 2;
2154	if (q < 41)	2181	if (q < 41)
2155	return 1 ;	2182	return 1;
2156	if (q < 242)	2183	if (q < 242)
2157	return 8 ;	2184	return 8;
2158	return 7 ;	2185	return 7;
2159	}	2186	}
2160		2187
2161	if (q < -242)	2188	if (q < -242)
2162	return 7 ;	2189	return 7;
2163	if (q < -41)	2190	if (q < -41)
2164	return 6 ;	2191	return 6;
2165	if (q < 41)	2192	if (q < 41)
2166	return 5 ;	2193	return 5;
2167	if (q < 242)	2194	if (q < 242)
2168	return 4 ;	2195	return 4;
2169		2196
2170	return 3 ;	2197	return 3;
2171	}	2198	}
2172		2199
2173	/*	2200	/*
2174	* absdir(int): Returns a number between 1 and 8, which represent	2201	* absdir(int): Returns a number between 1 and 8, which represent
2175	* the "absolute" direction of a number (it actually takes care of	2202	* the "absolute" direction of a number (it actually takes care of
2176	* "overflow" in previous calculations of a direction).	2203	* "overflow" in previous calculations of a direction).
2177	*/	2204	*/
2178		2205
		2206	int
2179	int absdir(int d) {	2207	absdir (int d)
2180	while(d<1) d+=8;	2208	{
2181	while(d>8) d-=8;	2209	while (d < 1)
		2210	d += 8;
		2211
		2212	while (d > 8)
		2213	d -= 8;
		2214
2182	return d;	2215	return d;
2183	}	2216	}
2184		2217
2185	/*	2218	/*
2186	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2219	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2187	* between two directions (which are expected to be absolute (see absdir())	2220	* between two directions (which are expected to be absolute (see absdir())
2188	*/	2221	*/
2189		2222
		2223	int
2190	int dirdiff(int dir1, int dir2) {	2224	dirdiff (int dir1, int dir2)
		2225	{
2191	int d;	2226	int d;
		2227
2192	d = abs(dir1 - dir2);	2228	d = abs (dir1 - dir2);
2193	if(d>4)	2229	if (d > 4)
2194	d = 8 - d;	2230	d = 8 - d;
		2231
2195	return d;	2232	return d;
2196	}	2233	}
2197		2234
2198	/* peterm:	2235	/* peterm:
2199	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2236	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2202	* This basically means that if direction is 15, then it could either go	2239	* This basically means that if direction is 15, then it could either go
2203	* direction 4, 14, or 16 to get back to where we are.	2240	* direction 4, 14, or 16 to get back to where we are.
2204	* Moved from spell_util.c to object.c with the other related direction	2241	* Moved from spell_util.c to object.c with the other related direction
2205	* functions.	2242	* functions.
2206	*/	2243	*/
2207
2208	int reduction_dir[SIZEOFFREE][3] = {	2244	int reduction_dir[SIZEOFFREE][3] = {
2209	{0,0,0}, /* 0 */	2245	{0, 0, 0}, /* 0 */
2210	{0,0,0}, /* 1 */	2246	{0, 0, 0}, /* 1 */
2211	{0,0,0}, /* 2 */	2247	{0, 0, 0}, /* 2 */
2212	{0,0,0}, /* 3 */	2248	{0, 0, 0}, /* 3 */
2213	{0,0,0}, /* 4 */	2249	{0, 0, 0}, /* 4 */
2214	{0,0,0}, /* 5 */	2250	{0, 0, 0}, /* 5 */
2215	{0,0,0}, /* 6 */	2251	{0, 0, 0}, /* 6 */
2216	{0,0,0}, /* 7 */	2252	{0, 0, 0}, /* 7 */
2217	{0,0,0}, /* 8 */	2253	{0, 0, 0}, /* 8 */
2218	{8,1,2}, /* 9 */	2254	{8, 1, 2}, /* 9 */
2219	{1,2,-1}, /* 10 */	2255	{1, 2, -1}, /* 10 */
2220	{2,10,12}, /* 11 */	2256	{2, 10, 12}, /* 11 */
2221	{2,3,-1}, /* 12 */	2257	{2, 3, -1}, /* 12 */
2222	{2,3,4}, /* 13 */	2258	{2, 3, 4}, /* 13 */
2223	{3,4,-1}, /* 14 */	2259	{3, 4, -1}, /* 14 */
2224	{4,14,16}, /* 15 */	2260	{4, 14, 16}, /* 15 */
2225	{5,4,-1}, /* 16 */	2261	{5, 4, -1}, /* 16 */
2226	{4,5,6}, /* 17 */	2262	{4, 5, 6}, /* 17 */
2227	{6,5,-1}, /* 18 */	2263	{6, 5, -1}, /* 18 */
2228	{6,20,18}, /* 19 */	2264	{6, 20, 18}, /* 19 */
2229	{7,6,-1}, /* 20 */	2265	{7, 6, -1}, /* 20 */
2230	{6,7,8}, /* 21 */	2266	{6, 7, 8}, /* 21 */
2231	{7,8,-1}, /* 22 */	2267	{7, 8, -1}, /* 22 */
2232	{8,22,24}, /* 23 */	2268	{8, 22, 24}, /* 23 */
2233	{8,1,-1}, /* 24 */	2269	{8, 1, -1}, /* 24 */
2234	{24,9,10}, /* 25 */	2270	{24, 9, 10}, /* 25 */
2235	{9,10,-1}, /* 26 */	2271	{9, 10, -1}, /* 26 */
2236	{10,11,-1}, /* 27 */	2272	{10, 11, -1}, /* 27 */
2237	{27,11,29}, /* 28 */	2273	{27, 11, 29}, /* 28 */
2238	{11,12,-1}, /* 29 */	2274	{11, 12, -1}, /* 29 */
2239	{12,13,-1}, /* 30 */	2275	{12, 13, -1}, /* 30 */
2240	{12,13,14}, /* 31 */	2276	{12, 13, 14}, /* 31 */
2241	{13,14,-1}, /* 32 */	2277	{13, 14, -1}, /* 32 */
2242	{14,15,-1}, /* 33 */	2278	{14, 15, -1}, /* 33 */
2243	{33,15,35}, /* 34 */	2279	{33, 15, 35}, /* 34 */
2244	{16,15,-1}, /* 35 */	2280	{16, 15, -1}, /* 35 */
2245	{17,16,-1}, /* 36 */	2281	{17, 16, -1}, /* 36 */
2246	{18,17,16}, /* 37 */	2282	{18, 17, 16}, /* 37 */
2247	{18,17,-1}, /* 38 */	2283	{18, 17, -1}, /* 38 */
2248	{18,19,-1}, /* 39 */	2284	{18, 19, -1}, /* 39 */
2249	{41,19,39}, /* 40 */	2285	{41, 19, 39}, /* 40 */
2250	{19,20,-1}, /* 41 */	2286	{19, 20, -1}, /* 41 */
2251	{20,21,-1}, /* 42 */	2287	{20, 21, -1}, /* 42 */
2252	{20,21,22}, /* 43 */	2288	{20, 21, 22}, /* 43 */
2253	{21,22,-1}, /* 44 */	2289	{21, 22, -1}, /* 44 */
2254	{23,22,-1}, /* 45 */	2290	{23, 22, -1}, /* 45 */
2255	{45,47,23}, /* 46 */	2291	{45, 47, 23}, /* 46 */
2256	{23,24,-1}, /* 47 */	2292	{23, 24, -1}, /* 47 */
2257	{24,9,-1}}; /* 48 */	2293	{24, 9, -1}
		2294	}; /* 48 */
2258		2295
2259	/* Recursive routine to step back and see if we can	2296	/* Recursive routine to step back and see if we can
2260	* find a path to that monster that we found. If not,	2297	* find a path to that monster that we found. If not,
2261	* we don't bother going toward it. Returns 1 if we	2298	* we don't bother going toward it. Returns 1 if we
2262	* can see a direct way to get it	2299	* can see a direct way to get it
2263	* Modified to be map tile aware -.MSW	2300	* Modified to be map tile aware -.MSW
2264	*/	2301	*/
2265		2302	int
2266
2267	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2303	can_see_monsterP (maptile *m, int x, int y, int dir)
		2304	{
2268	sint16 dx, dy;	2305	sint16 dx, dy;
2269	int mflags;	2306	int mflags;
2270		2307
		2308	if (dir < 0)
2271	if(dir<0) return 0; /* exit condition: invalid direction */	2309	return 0; /* exit condition: invalid direction */
2272		2310
2273	dx = x + freearr_x[dir];	2311	dx = x + freearr_x[dir];
2274	dy = y + freearr_y[dir];	2312	dy = y + freearr_y[dir];
2275		2313
2276	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2314	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2277		2315
2278	/* This functional arguably was incorrect before - it was	2316	/* This functional arguably was incorrect before - it was
2279	* checking for P_WALL - that was basically seeing if	2317	* checking for P_WALL - that was basically seeing if
2280	* we could move to the monster - this is being more	2318	* we could move to the monster - this is being more
2281	* literal on if we can see it. To know if we can actually	2319	* literal on if we can see it. To know if we can actually
2282	* move to the monster, we'd need the monster passed in or	2320	* move to the monster, we'd need the monster passed in or
2283	* at least its move type.	2321	* at least its move type.
2284	*/	2322	*/
2285	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2323	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2324	return 0;
2286		2325
2287	/* yes, can see. */	2326	/* yes, can see. */
2288	if(dir < 9) return 1;	2327	if (dir < 9)
		2328	return 1;
		2329
2289	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2330	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2290	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2331	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2291	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2332	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2292	}	2333	}
2293		2334
2294
2295
2296	/*	2335	/*
2297	* can_pick(picker, item): finds out if an object is possible to be	2336	* can_pick(picker, item): finds out if an object is possible to be
2298	* picked up by the picker. Returnes 1 if it can be	2337	* picked up by the picker. Returnes 1 if it can be
2299	* picked up, otherwise 0.	2338	* picked up, otherwise 0.
2300	*	2339	*
…		…
2302	* core dumps if they do.	2341	* core dumps if they do.
2303	*	2342	*
2304	* Add a check so we can't pick up invisible objects (0.93.8)	2343	* Add a check so we can't pick up invisible objects (0.93.8)
2305	*/	2344	*/
2306		2345
		2346	int
2307	int can_pick(const object *who, const object *item) {	2347	can_pick (const object *who, const object *item)
		2348	{
2308	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2349	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2309	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2350	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2310	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2351	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2311	(who->type==PLAYER||item->weight<who->weight/3));
2312	}	2352	}
2313
2314		2353
2315	/*	2354	/*
2316	* create clone from object to another	2355	* create clone from object to another
2317	*/	2356	*/
		2357	object *
2318	object *object_create_clone (object *asrc) {	2358	object_create_clone (object *asrc)
		2359	{
2319	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2360	object *dst = 0, *tmp, *src, *part, *prev, *item;
2320		2361
2321	if(!asrc) return NULL;	2362	if (!asrc)
		2363	return 0;
		2364
2322	src = asrc;	2365	src = asrc;
2323	if(src->head)	2366	if (src->head)
2324	src = src->head;	2367	src = src->head;
2325		2368
2326	prev = NULL;	2369	prev = 0;
2327	for(part = src; part; part = part->more) {	2370	for (part = src; part; part = part->more)
2328	tmp = get_object();	2371	{
2329	copy_object(part,tmp);	2372	tmp = part->clone ();
2330	tmp->x -= src->x;	2373	tmp->x -= src->x;
2331	tmp->y -= src->y;	2374	tmp->y -= src->y;
		2375
2332	if(!part->head) {	2376	if (!part->head)
		2377	{
2333	dst = tmp;	2378	dst = tmp;
2334	tmp->head = NULL;	2379	tmp->head = 0;
		2380	}
2335	} else {	2381	else
2336	tmp->head = dst;	2382	tmp->head = dst;
2337	}	2383
2338	tmp->more = NULL;	2384	tmp->more = 0;
		2385
2339	if(prev)	2386	if (prev)
2340	prev->more = tmp;	2387	prev->more = tmp;
		2388
2341	prev = tmp;	2389	prev = tmp;
2342	}	2390	}
2343	/*** copy inventory ***/	2391
2344	for(item = src->inv; item; item = item->below) {	2392	for (item = src->inv; item; item = item->below)
2345	(void) insert_ob_in_ob(object_create_clone(item),dst);	2393	insert_ob_in_ob (object_create_clone (item), dst);
2346	}
2347		2394
2348	return dst;	2395	return dst;
2349	}
2350
2351	/* return true if the object was destroyed, 0 otherwise */
2352	int was_destroyed (const object *op, tag_t old_tag)
2353	{
2354	/* checking for FLAG_FREED isn't necessary, but makes this function more
2355	* robust */
2356	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2357	}	2396	}
2358		2397
2359	/* GROS - Creates an object using a string representing its content. */	2398	/* GROS - Creates an object using a string representing its content. */
2360	/* Basically, we save the content of the string to a temp file, then call */	2399	/* Basically, we save the content of the string to a temp file, then call */
2361	/* load_object on it. I admit it is a highly inefficient way to make things, */	2400	/* load_object on it. I admit it is a highly inefficient way to make things, */
2362	/* but it was simple to make and allows reusing the load_object function. */	2401	/* but it was simple to make and allows reusing the load_object function. */
2363	/* Remember not to use load_object_str in a time-critical situation. */	2402	/* Remember not to use load_object_str in a time-critical situation. */
2364	/* Also remember that multiparts objects are not supported for now. */	2403	/* Also remember that multiparts objects are not supported for now. */
2365		2404	object *
2366	object* load_object_str(const char *obstr)	2405	load_object_str (const char *obstr)
2367	{	2406	{
2368	object *op;	2407	object *op;
2369	char filename[MAX_BUF];	2408	char filename[MAX_BUF];
		2409
2370	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2410	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2371		2411
2372	FILE *tempfile=fopen(filename,"w");	2412	FILE *tempfile = fopen (filename, "w");
		2413
2373	if (tempfile == NULL)	2414	if (tempfile == NULL)
2374	{	2415	{
2375	LOG(llevError,"Error - Unable to access load object temp file\n");	2416	LOG (llevError, "Error - Unable to access load object temp file\n");
2376	return NULL;	2417	return NULL;
2377	};	2418	}
		2419
2378	fprintf(tempfile,obstr);	2420	fprintf (tempfile, obstr);
2379	fclose(tempfile);	2421	fclose (tempfile);
2380		2422
2381	op=get_object();	2423	op = object::create ();
2382		2424
2383	object_thawer thawer (filename);	2425	object_thawer thawer (filename);
2384		2426
2385	if (thawer)	2427	if (thawer)
2386	load_object(thawer,op,0);	2428	load_object (thawer, op, 0);
2387		2429
2388	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2430	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2389	CLEAR_FLAG(op,FLAG_REMOVED);	2431	CLEAR_FLAG (op, FLAG_REMOVED);
2390		2432
2391	return op;	2433	return op;
2392	}	2434	}
2393		2435
2394	/* This returns the first object in who's inventory that	2436	/* This returns the first object in who's inventory that
2395	* has the same type and subtype match.	2437	* has the same type and subtype match.
2396	* returns NULL if no match.	2438	* returns NULL if no match.
2397	*/	2439	*/
		2440	object *
2398	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2441	find_obj_by_type_subtype (const object *who, int type, int subtype)
2399	{	2442	{
2400	object *tmp;
2401
2402	for (tmp=who->inv; tmp; tmp=tmp->below)	2443	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2403	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2444	if (tmp->type == type && tmp->subtype == subtype)
		2445	return tmp;
2404		2446
2405	return NULL;	2447	return 0;
2406	}	2448	}
2407		2449
2408	/* If ob has a field named key, return the link from the list,	2450	/* If ob has a field named key, return the link from the list,
2409	* otherwise return NULL.	2451	* otherwise return NULL.
2410	*	2452	*
2411	* key must be a passed in shared string - otherwise, this won't	2453	* key must be a passed in shared string - otherwise, this won't
2412	* do the desired thing.	2454	* do the desired thing.
2413	*/	2455	*/
		2456	key_value *
2414	key_value * get_ob_key_link(const object * ob, const char * key) {	2457	get_ob_key_link (const object *ob, const char *key)
2415	key_value * link;	2458	{
2416
2417	for (link = ob->key_values; link != NULL; link = link->next) {	2459	for (key_value *link = ob->key_values; link; link = link->next)
2418	if (link->key == key) {	2460	if (link->key == key)
2419	return link;	2461	return link;
2420	}	2462
2421	}	2463	return 0;
2422		2464	}
2423	return NULL;
2424	}
2425		2465
2426	/*	2466	/*
2427	* Returns the value of op has an extra_field for key, or NULL.	2467	* Returns the value of op has an extra_field for key, or NULL.
2428	*	2468	*
2429	* The argument doesn't need to be a shared string.	2469	* The argument doesn't need to be a shared string.
2430	*	2470	*
2431	* The returned string is shared.	2471	* The returned string is shared.
2432	*/	2472	*/
		2473	const char *
2433	const char * get_ob_key_value(const object * op, const char * const key) {	2474	get_ob_key_value (const object *op, const char *const key)
		2475	{
2434	key_value * link;	2476	key_value *link;
2435	const char * canonical_key;	2477	shstr_cmp canonical_key (key);
		2478
		2479	if (!canonical_key)
2436		2480	{
2437	canonical_key = shstr::find (key);
2438
2439	if (canonical_key == NULL) {
2440	/* 1. There being a field named key on any object	2481	/* 1. There being a field named key on any object
2441	* implies there'd be a shared string to find.	2482	* implies there'd be a shared string to find.
2442	* 2. Since there isn't, no object has this field.	2483	* 2. Since there isn't, no object has this field.
2443	* 3. Therefore, *this* object doesn't have this field.	2484	* 3. Therefore, *this* object doesn't have this field.
2444	*/	2485	*/
2445	return NULL;	2486	return 0;
2446	}	2487	}
2447		2488
2448	/* This is copied from get_ob_key_link() above -	2489	/* This is copied from get_ob_key_link() above -
2449	* only 4 lines, and saves the function call overhead.	2490	* only 4 lines, and saves the function call overhead.
2450	*/	2491	*/
2451	for (link = op->key_values; link != NULL; link = link->next) {	2492	for (link = op->key_values; link; link = link->next)
2452	if (link->key == canonical_key) {	2493	if (link->key == canonical_key)
2453	return link->value;	2494	return link->value;
2454	}	2495
2455	}	2496	return 0;
2456	return NULL;
2457	}	2497	}
2458		2498
2459		2499
2460	/*	2500	/*
2461	* Updates the canonical_key in op to value.	2501	* Updates the canonical_key in op to value.
…		…
2465	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2505	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2466	* keys.	2506	* keys.
2467	*	2507	*
2468	* Returns TRUE on success.	2508	* Returns TRUE on success.
2469	*/	2509	*/
		2510	int
2470	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2511	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2512	{
2471	key_value * field = NULL, *last=NULL;	2513	key_value *field = NULL, *last = NULL;
2472		2514
2473	for (field=op->key_values; field != NULL; field=field->next) {	2515	for (field = op->key_values; field != NULL; field = field->next)
		2516	{
2474	if (field->key != canonical_key) {	2517	if (field->key != canonical_key)
		2518	{
2475	last = field;	2519	last = field;
2476	continue;	2520	continue;
2477	}	2521	}
2478		2522
2479	if (value)	2523	if (value)
2480	field->value = value;	2524	field->value = value;
2481	else {	2525	else
		2526	{
2482	/* Basically, if the archetype has this key set,	2527	/* Basically, if the archetype has this key set,
2483	* we need to store the null value so when we save	2528	* we need to store the null value so when we save
2484	* it, we save the empty value so that when we load,	2529	* it, we save the empty value so that when we load,
2485	* we get this value back again.	2530	* we get this value back again.
2486	*/	2531	*/
2487	if (get_ob_key_link (&op->arch->clone, canonical_key))	2532	if (get_ob_key_link (&op->arch->clone, canonical_key))
2488	field->value = 0;	2533	field->value = 0;
		2534	else
		2535	{
		2536	if (last)
		2537	last->next = field->next;
2489	else	2538	else
2490	{
2491	if (last) last->next = field->next;
2492	else op->key_values = field->next;	2539	op->key_values = field->next;
2493		2540
2494	delete field;	2541	delete field;
2495	}	2542	}
2496	}	2543	}
2497	return TRUE;	2544	return TRUE;
2498	}	2545	}
2499	/* IF we get here, key doesn't exist */	2546	/* IF we get here, key doesn't exist */
2500		2547
2501	/* No field, we'll have to add it. */	2548	/* No field, we'll have to add it. */
2502		2549
2503	if (!add_key) {	2550	if (!add_key)
2504	return FALSE;	2551	return FALSE;
2505	}	2552
2506	/* There isn't any good reason to store a null	2553	/* There isn't any good reason to store a null
2507	* value in the key/value list. If the archetype has	2554	* value in the key/value list. If the archetype has
2508	* this key, then we should also have it, so shouldn't	2555	* this key, then we should also have it, so shouldn't
2509	* be here. If user wants to store empty strings,	2556	* be here. If user wants to store empty strings,
2510	* should pass in ""	2557	* should pass in ""
2511	*/	2558	*/
2512	if (value == NULL) return TRUE;	2559	if (value == NULL)
2513
2514	field = new key_value;
2515
2516	field->key = canonical_key;
2517	field->value = value;
2518	/* Usual prepend-addition. */
2519	field->next = op->key_values;
2520	op->key_values = field;
2521
2522	return TRUE;	2560	return TRUE;
		2561
		2562	field = new key_value;
		2563
		2564	field->key = canonical_key;
		2565	field->value = value;
		2566	/* Usual prepend-addition. */
		2567	field->next = op->key_values;
		2568	op->key_values = field;
		2569
		2570	return TRUE;
2523	}	2571	}
2524		2572
2525	/*	2573	/*
2526	* Updates the key in op to value.	2574	* Updates the key in op to value.
2527	*	2575	*
…		…
2529	* and not add new ones.	2577	* and not add new ones.
2530	* In general, should be little reason FALSE is ever passed in for add_key	2578	* In general, should be little reason FALSE is ever passed in for add_key
2531	*	2579	*
2532	* Returns TRUE on success.	2580	* Returns TRUE on success.
2533	*/	2581	*/
		2582	int
2534	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2583	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2535	{	2584	{
2536	shstr key_ (key);	2585	shstr key_ (key);
		2586
2537	return set_ob_key_value_s (op, key_, value, add_key);	2587	return set_ob_key_value_s (op, key_, value, add_key);
2538	}	2588	}
		2589
		2590	object::depth_iterator::depth_iterator (object *container)
		2591	: iterator_base (container)
		2592	{
		2593	while (item->inv)
		2594	item = item->inv;
		2595	}
		2596
		2597	void
		2598	object::depth_iterator::next ()
		2599	{
		2600	if (item->below)
		2601	{
		2602	item = item->below;
		2603
		2604	while (item->inv)
		2605	item = item->inv;
		2606	}
		2607	else
		2608	item = item->env;
		2609	}
		2610
		2611
		2612	const char *
		2613	object::flag_desc (char *desc, int len) const
		2614	{
		2615	char *p = desc;
		2616	bool first = true;
		2617
		2618	*p = 0;
		2619
		2620	for (int i = 0; i < NUM_FLAGS; i++)
		2621	{
		2622	if (len <= 10) // magic constant!
		2623	{
		2624	snprintf (p, len, ",...");
		2625	break;
		2626	}
		2627
		2628	if (flag [i])
		2629	{
		2630	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2631	len -= cnt;
		2632	p += cnt;
		2633	first = false;
		2634	}
		2635	}
		2636
		2637	return desc;
		2638	}
		2639
		2640	// return a suitable string describing an object in enough detail to find it
		2641	const char *
		2642	object::debug_desc (char *info) const
		2643	{
		2644	char flagdesc[512];
		2645	char info2[256 * 4];
		2646	char *p = info;
		2647
		2648	p += snprintf (p, 512, "{cnt:%d,uuid:<1,%" PRIx64 ">,name:\"%s%s%s\",flags:[%s],type:%d}",
		2649	count, uuid.seq,
		2650	&name,
		2651	title ? "\",title:" : "",
		2652	title ? (const char *)title : "",
		2653	flag_desc (flagdesc, 512), type);
		2654
		2655	if (env)
		2656	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2657
		2658	if (map)
		2659	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2660
		2661	return info;
		2662	}
		2663
		2664	const char *
		2665	object::debug_desc () const
		2666	{
		2667	static char info[256 * 3];
		2668	return debug_desc (info);
		2669	}
		2670

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