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Comparing deliantra/server/common/object.C (file contents):
Revision 1.16 by root, Mon Sep 4 16:46:32 2006 UTC vs.
Revision 1.102 by root, Mon Jan 1 17:34:11 2007 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.16 2006/09/04 16:46:32 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
116	bool
117	object::can_merge (object *ob1, object *ob2)	195	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	196	{
119	/* A couple quicksanity checks */	197	/* A couple quicksanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	198	if (ob1 == ob2
		199	|| ob1->type != ob2->type
		200	|| ob1->speed != ob2->speed
		201	|| ob1->value != ob2->value
		202	|| ob1->name != ob2->name)
121	return 0;	203	return 0;
122		204
123	if (ob1->speed != ob2->speed)	205	//TODO: this ain't working well, use nicer and correct overflow check
124	return 0;
125
126	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	206	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
127	* value could not be stored in a sint32 (which unfortunately sometimes is	207	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).	208	* used to store nrof).
129	*/	209	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)	210	if (ob1->nrof + ob2->nrof >= 1UL << 31)
…		…
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	220	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		221
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	222	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	223	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		224
145		225	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
146	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something	226	|| ob1->arch != ob2->arch
147	* being locked in inventory should prevent merging.
148	* 0x4 in flags3 is CLIENT_SENT
149	*/
150	if ((ob1->arch != ob2->arch) ||
151	(ob1->flags[0] != ob2->flags[0]) ||
152	(ob1->flags[1] != ob2->flags[1]) ||
153	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
154	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
155	(ob1->name != ob2->name) ||	227	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	228	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	229	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	230	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||	231	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||	232	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
161	(ob1->attacktype != ob2->attacktype) ||	233	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	234	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	235	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	236	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	237	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	238	|| ob1->animation_id != ob2->animation_id
167	(ob1->client_type != ob2->client_type) ||	239	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	240	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	241	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	242	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	243	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	244	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	245	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	246	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	247	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	248	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	249	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
178	return 0;	250	return 0;
179		251
180	/* This is really a spellbook check - really, we should	252	/* This is really a spellbook check - really, we should
181	* check all objects in the inventory.	253	* check all objects in the inventory.
182	*/	254	*/
183	if (ob1->inv || ob2->inv)	255	if (ob1->inv || ob2->inv)
184	{	256	{
185	/* if one object has inventory but the other doesn't, not equiv */	257	/* if one object has inventory but the other doesn't, not equiv */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))	258	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;	259	return 0;
188		260
189	/* Now check to see if the two inventory objects could merge */	261	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	262	if (!object::can_merge (ob1->inv, ob2->inv))
191	return 0;	263	return 0;
192		264
193	/* 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
194	* if it is valid.	266	* if it is valid.
195	*/	267	*/
196	}	268	}
…		…
204		276
205	/* Note sure why the following is the case - either the object has to	277	/* Note sure why the following is the case - either the object has to
206	* be animated or have a very low speed. Is this an attempted monster	278	* be animated or have a very low speed. Is this an attempted monster
207	* check?	279	* check?
208	*/	280	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	281	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	282	return 0;
212		283
213	switch (ob1->type)	284	switch (ob1->type)
214	{	285	{
215	case SCROLL:	286	case SCROLL:
216	if (ob1->level != ob2->level)	287	if (ob1->level != ob2->level)
217	return 0;	288	return 0;
218	break;	289	break;
219	}	290	}
220		291
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	292	if (ob1->key_values != NULL || ob2->key_values != NULL)
222	{	293	{
223	/* At least one of these has key_values. */	294	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	295	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
225	/* One has fields, but the other one doesn't. */	296	/* One has fields, but the other one doesn't. */
226	return 0;	297	return 0;
227	else if (!compare_ob_value_lists (ob1, ob2))	298	else if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	299	return 0;
229	}	300	}
230		301
231	//TODO: generate an event or call into perl for additional checks	302	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	303	if (ob1->self || ob2->self)
233	{	304	{
234	ob1->optimise ();	305	ob1->optimise ();
235	ob2->optimise ();	306	ob2->optimise ();
236		307
237	if (ob1->self || ob2->self)	308	if (ob1->self || ob2->self)
238	return 0;	309	return 0;
239	}	310	}
240		311
241	/* Everything passes, must be OK. */	312	/* Everything passes, must be OK. */
242	return 1;	313	return 1;
243	}	314	}
		315
244	/*	316	/*
245	* sum_weight() is a recursive function which calculates the weight	317	* sum_weight() is a recursive function which calculates the weight
246	* 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
247	* containers are carrying, and sums it up.	319	* containers are carrying, and sums it up.
248	*/	320	*/
249	signed long sum_weight(object *op) {	321	long
		322	sum_weight (object *op)
		323	{
250	signed long sum;	324	long sum;
251	object *inv;	325	object *inv;
		326
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	327	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		328	{
253	if (inv->inv)	329	if (inv->inv)
254	sum_weight(inv);	330	sum_weight (inv);
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	331	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
256	}	332	}
		333
257	if (op->type == CONTAINER && op->stats.Str)	334	if (op->type == CONTAINER && op->stats.Str)
258	sum = (sum * (100 - op->stats.Str))/100;	335	sum = (sum * (100 - op->stats.Str)) / 100;
		336
259	if(op->carrying != sum)	337	if (op->carrying != sum)
260	op->carrying = sum;	338	op->carrying = sum;
		339
261	return sum;	340	return sum;
262	}	341	}
263		342
264	/**	343	/**
265	* Return the outermost environment object for a given object.	344	* Return the outermost environment object for a given object.
266	*/	345	*/
267		346
		347	object *
268	object *object_get_env_recursive (object *op) {	348	object_get_env_recursive (object *op)
		349	{
269	while (op->env != NULL)	350	while (op->env != NULL)
270	op = op->env;	351	op = op->env;
271	return op;	352	return op;
272	}
273
274	/*
275	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
276	* a better check. We basically keeping traversing up until we can't
277	* or find a player.
278	*/
279
280	object *is_player_inv (object *op) {
281	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
282	if (op->env==op)
283	op->env = NULL;
284	return op;
285	}	353	}
286		354
287	/*	355	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	356	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.	357	* Some error messages.
290	* 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.
291	*/	359	*/
292		360
293	void dump_object2(object *op) {	361	char *
294	errmsg[0] = 0;
295	return;
296	//TODO//D#d#
297	#if 0
298	char *cp;
299	/* object *tmp;*/
300
301	if(op->arch!=NULL) {
302	strcat(errmsg,"arch ");
303	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
304	strcat(errmsg,"\n");
305	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	#if 0
308	/* Don't dump player diffs - they are too long, mostly meaningless, and
309	* will overflow the buffer.
310	* Changed so that we don't dump inventory either. This may
311	* also overflow the buffer.
312	*/
313	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	} else {
320	strcat(errmsg,"Object ");
321	if (op->name==NULL) strcat(errmsg, "(null)");
322	else strcat(errmsg,op->name);
323	strcat(errmsg,"\n");
324	#if 0
325	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
326	strcat(errmsg,cp);
327	for (tmp=op->inv; tmp; tmp=tmp->below)
328	dump_object2(tmp);
329	#endif
330	strcat(errmsg,"end\n");
331	}
332	#endif
333	}
334
335	/*
336	* Dumps an object. Returns output in the static global errmsg array.
337	*/
338
339	void dump_object(object *op) {	362	dump_object (object *op)
340	if(op==NULL) {	363	{
341	strcpy(errmsg,"[NULL pointer]");	364	if (!op)
342	return;	365	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		366
348	void dump_all_objects(void) {	367	object_freezer freezer;
349	object *op;	368	save_object (freezer, op, 1);
350	for(op=objects;op!=NULL;op=op->next) {	369	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	370	}
355		371
356	/*	372	/*
357	* 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
358	* multi-object 1 which is closest to the second object.	374	* multi-object 1 which is closest to the second object.
359	* If it's not a multi-object, it is returned.	375	* If it's not a multi-object, it is returned.
360	*/	376	*/
361		377
		378	object *
362	object *get_nearest_part(object *op, const object *pl) {	379	get_nearest_part (object *op, const object *pl)
		380	{
363	object *tmp,*closest;	381	object *tmp, *closest;
364	int last_dist,i;	382	int last_dist, i;
		383
365	if(op->more==NULL)	384	if (op->more == NULL)
366	return op;	385	return op;
367	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)
368	if((i=distance(tmp,pl))<last_dist)	387	if ((i = distance (tmp, pl)) < last_dist)
369	closest=tmp,last_dist=i;	388	closest = tmp, last_dist = i;
370	return closest;	389	return closest;
371	}	390	}
372		391
373	/*	392	/*
374	* 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.
375	*/	394	*/
376		395
		396	object *
377	object *find_object(tag_t i) {	397	find_object (tag_t i)
378	object *op;	398	{
379	for(op=objects;op!=NULL;op=op->next)	399	for (object *op = object::first; op; op = op->next)
380	if(op->count==i)	400	if (op->count == i)
381	break;	401	return op;
		402
382	return op;	403	return 0;
383	}	404	}
384		405
385	/*	406	/*
386	* 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.
387	* Used only by the patch command, but not all that useful.	408	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	409	* Enables features like "patch <name-of-other-player> food 999"
389	*/	410	*/
390		411
		412	object *
391	object *find_object_name(const char *str) {	413	find_object_name (const char *str)
392	const char *name = shstr::find (str);	414	{
		415	shstr_cmp str_ (str);
393	object *op;	416	object *op;
		417
394	for(op=objects;op!=NULL;op=op->next)	418	for (op = object::first; op != NULL; op = op->next)
395	if(&op->name == name)	419	if (op->name == str_)
396	break;	420	break;
397		421
398	return op;	422	return op;
399	}	423	}
400		424
		425	void
401	void free_all_object_data ()	426	free_all_object_data ()
402	{	427	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	428	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
404	}
405
406	/*
407	* Returns the object which this object marks as being the owner.
408	* A id-scheme is used to avoid pointing to objects which have been
409	* freed and are now reused. If this is detected, the owner is
410	* set to NULL, and NULL is returned.
411	* Changed 2004-02-12 - if the player is setting at the play again
412	* prompt, he is removed, and we don't want to treat him as an owner of
413	* anything, so check removed flag. I don't expect that this should break
414	* anything - once an object is removed, it is basically dead anyways.
415	*/
416
417	object *get_owner(object *op) {
418	if(op->owner==NULL)
419	return NULL;
420
421	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
422	op->owner->count==op->ownercount)
423	return op->owner;
424
425	op->owner=NULL;
426	op->ownercount=0;
427	return NULL;
428	}
429
430	void clear_owner(object *op)
431	{
432	if (!op) return;
433
434	if (op->owner && op->ownercount == op->owner->count)
435	op->owner->refcount--;
436
437	op->owner = NULL;
438	op->ownercount = 0;
439	}	429	}
440		430
441	/*	431	/*
442	* 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
443	* skill and experience objects.	433	* skill and experience objects.
444	*/	434	*/
445	void set_owner (object *op, object *owner)	435	void
		436	object::set_owner (object *owner)
446	{	437	{
447	if(owner==NULL||op==NULL)	438	if (!owner)
448	return;	439	return;
449		440
450	/* next line added to allow objects which own objects */	441	/* next line added to allow objects which own objects */
451	/* 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
452	* with the fireball owning a poison cloud which then owned the	443	* with the fireball owning a poison cloud which then owned the
453	* 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
454	* freed and then another object replacing it. Since the ownercounts	445	* freed and then another object replacing it. Since the ownercounts
455	* didn't match, this check is valid and I believe that cause is valid.	446	* didn't match, this check is valid and I believe that cause is valid.
456	*/	447	*/
457	while (owner->owner && owner!=owner->owner &&	448	while (owner->owner)
458	owner->ownercount==owner->owner->count) owner=owner->owner;	449	owner = owner->owner;
459		450
460	/* IF the owner still has an owner, we did not resolve to a final owner.
461	* so lets not add to that.
462	*/
463	if (owner->owner) return;
464
465	op->owner=owner;	451	this->owner = owner;
466
467	op->ownercount=owner->count;
468	owner->refcount++;
469
470	}
471
472	/* Set the owner to clone's current owner and set the skill and experience
473	* objects to clone's objects (typically those objects that where the owner's
474	* current skill and experience objects at the time when clone's owner was
475	* set - not the owner's current skill and experience objects).
476	*
477	* Use this function if player created an object (e.g. fire bullet, swarm
478	* spell), and this object creates further objects whose kills should be
479	* accounted for the player's original skill, even if player has changed
480	* skills meanwhile.
481	*/
482	void copy_owner (object *op, object *clone)
483	{
484	object *owner = get_owner (clone);
485	if (owner == NULL) {
486	/* players don't have owners - they own themselves. Update
487	* as appropriate.
488	*/
489	if (clone->type == PLAYER) owner=clone;
490	else return;
491	}
492	set_owner(op, owner);
493
494	}	452	}
495		453
496	/* Zero the key_values on op, decrementing the shared-string	454	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	455	* refcounts and freeing the links.
498	*/	456	*/
		457	static void
499	static void free_key_values(object * op)	458	free_key_values (object *op)
500	{	459	{
501	for (key_value *i = op->key_values; i != 0; )	460	for (key_value *i = op->key_values; i != 0;)
502	{	461	{
503	key_value *next = i->next;	462	key_value *next = i->next;
504	delete i;	463	delete i;
		464
505	i = next;	465	i = next;
506	}	466	}
507		467
508	op->key_values = 0;	468	op->key_values = 0;
509	}	469	}
510		470
511	void object::clear ()
512	{
513	attachable_base::clear ();
514
515	free_key_values (this);
516
517	name = 0;
518	name_pl = 0;
519	title = 0;
520	race = 0;
521	slaying = 0;
522	skill = 0;
523	msg = 0;
524	lore = 0;
525	custom_name = 0;
526	materialname = 0;
527
528	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
529
530	SET_FLAG (this, FLAG_REMOVED);
531	}
532
533	void object::clone (object *destination)
534	{
535	*(object_copy *)destination = *(object_copy *)this;
536	*(object_pod *)destination = *(object_pod *)this;
537
538	if (self || cb)
539	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
540	}
541
542	/*	471	/*
543	* clear_object() frees everything allocated by an object, and also
544	* clears all variables and flags to default settings.
545	*/
546
547	void clear_object (object *op)
548	{
549	op->clear ();
550
551	op->contr = NULL;
552	op->below = NULL;
553	op->above = NULL;
554	op->inv = NULL;
555	op->container=NULL;
556	op->env=NULL;
557	op->more=NULL;
558	op->head=NULL;
559	op->map=NULL;
560	op->refcount=0;
561	op->active_next = NULL;
562	op->active_prev = NULL;
563	/* What is not cleared is next, prev, and count */
564
565	op->expmul = 1.0;
566	op->face = blank_face;
567	op->attacked_by_count = -1;
568
569	if (settings.casting_time)
570	op->casting_time = -1;
571	}
572
573	/*
574	* copy object first frees everything allocated by the second object,	472	* copy_to first frees everything allocated by the dst object,
575	* and then copies the contends of the first object into the second	473	* and then copies the contents of itself into the second
576	* object, allocating what needs to be allocated. Basically, any	474	* object, allocating what needs to be allocated. Basically, any
577	* 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,
578	* 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
579	* will point at garbage.	477	* will point at garbage.
580	*/	478	*/
581		479	void
582	void copy_object (object *op2, object *op)	480	object::copy_to (object *dst)
583	{	481	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	482	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	483	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
586		484
587	op2->clone (op);	485	*(object_copy *)dst = *this;
588		486
589	if (is_freed) SET_FLAG (op, FLAG_FREED);	487	if (is_freed)
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	488	SET_FLAG (dst, FLAG_FREED);
591		489
		490	if (is_removed)
		491	SET_FLAG (dst, FLAG_REMOVED);
		492
592	if (op2->speed < 0)	493	if (speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	494	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
594		495
595	/* Copy over key_values, if any. */	496	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	497	if (key_values)
597	{	498	{
598	key_value *tail = NULL;	499	key_value *tail = 0;
599	key_value *i;	500	key_value *i;
600		501
601	op->key_values = NULL;	502	dst->key_values = 0;
602		503
603	for (i = op2->key_values; i != NULL; i = i->next)	504	for (i = key_values; i; i = i->next)
604	{	505	{
605	key_value *new_link = new key_value;	506	key_value *new_link = new key_value;
606		507
607	new_link->next = NULL;	508	new_link->next = 0;
608	new_link->key = i->key;	509	new_link->key = i->key;
609	new_link->value = i->value;	510	new_link->value = i->value;
610		511
611	/* Try and be clever here, too. */	512	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	513	if (!dst->key_values)
613	{	514	{
614	op->key_values = new_link;	515	dst->key_values = new_link;
615	tail = new_link;	516	tail = new_link;
616	}	517	}
617	else	518	else
618	{	519	{
619	tail->next = new_link;	520	tail->next = new_link;
620	tail = new_link;	521	tail = new_link;
621	}	522	}
622	}	523	}
623	}	524	}
624		525
625	update_ob_speed (op);	526	dst->set_speed (dst->speed);
626	}	527	}
627		528
628	/*	529	object *
629	* get_object() grabs an object from the list of unused objects, makes	530	object::clone ()
630	* sure it is initialised, and returns it.
631	* If there are no free objects, expand_objects() is called to get more.
632	*/
633
634	object *get_object ()
635	{	531	{
636	object *op = new object;	532	object *neu = create ();
637		533	copy_to (neu);
638	op->count = ++ob_count;
639
640	op->active_next = 0;
641	op->active_prev = 0;
642
643	op->next = objects;
644	op->prev = 0;
645
646	if (objects)
647	objects->prev = op;
648
649	objects = op;
650
651	SET_FLAG (op, FLAG_REMOVED);
652
653	op->expmul = 1.0;
654	op->face = blank_face;
655	op->attacked_by_count = -1;
656
657	return op;	534	return neu;
658	}	535	}
659		536
660	/*	537	/*
661	* 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
662	* 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
663	* 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.
664	*/	541	*/
665		542	void
666	void update_turn_face(object *op) {	543	update_turn_face (object *op)
		544	{
667	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	545	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
668	return;	546	return;
		547
669	SET_ANIMATION(op, op->direction);	548	SET_ANIMATION (op, op->direction);
670	update_object(op,UP_OBJ_FACE);	549	update_object (op, UP_OBJ_FACE);
671	}	550	}
672		551
673	/*	552	/*
674	* 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
675	* 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.
676	* 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.
677	*/	556	*/
678		557	void
679	void update_ob_speed(object *op) {	558	object::set_speed (float speed)
680	extern int arch_init;	559	{
681		560	if (flag [FLAG_FREED] && speed)
682	/* No reason putting the archetypes objects on the speed list,	561	{
683	* since they never really need to be updated.
684	*/
685
686	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
687	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	562	LOG (llevError, "Object %s is freed but has speed.\n", &name);
688	#ifdef MANY_CORES
689	abort();
690	#else
691	op->speed = 0;	563	speed = 0;
692	#endif
693	}	564	}
694	if (arch_init) {
695	return;
696	}
697	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
698	/* If already on active list, don't do anything */
699	if (op->active_next || op->active_prev || op==active_objects)
700	return;
701		565
702	/* process_events() expects us to insert the object at the beginning	566	this->speed = speed;
703	* of the list. */	567
704	op->active_next = active_objects;	568	if (has_active_speed ())
705	if (op->active_next!=NULL)	569	activate ();
706	op->active_next->active_prev = op;
707	active_objects = op;
708	}
709	else {	570	else
710	/* If not on the active list, nothing needs to be done */	571	deactivate ();
711	if (!op->active_next && !op->active_prev && op!=active_objects)
712	return;
713
714	if (op->active_prev==NULL) {
715	active_objects = op->active_next;
716	if (op->active_next!=NULL)
717	op->active_next->active_prev = NULL;
718	}
719	else {
720	op->active_prev->active_next = op->active_next;
721	if (op->active_next)
722	op->active_next->active_prev = op->active_prev;
723	}
724	op->active_next = NULL;
725	op->active_prev = NULL;
726	}
727	}	572	}
728		573
729	/* This function removes object 'op' from the list of active
730	* objects.
731	* This should only be used for style maps or other such
732	* reference maps where you don't want an object that isn't
733	* in play chewing up cpu time getting processed.
734	* The reverse of this is to call update_ob_speed, which
735	* will do the right thing based on the speed of the object.
736	*/
737	void remove_from_active_list(object *op)
738	{
739	/* If not on the active list, nothing needs to be done */
740	if (!op->active_next && !op->active_prev && op!=active_objects)
741	return;
742
743	if (op->active_prev==NULL) {
744	active_objects = op->active_next;
745	if (op->active_next!=NULL)
746	op->active_next->active_prev = NULL;
747	}
748	else {
749	op->active_prev->active_next = op->active_next;
750	if (op->active_next)
751	op->active_next->active_prev = op->active_prev;
752	}
753	op->active_next = NULL;
754	op->active_prev = NULL;
755	}
756
757	/*	574	/*
758	* update_object() updates the array which represents the map.	575	* update_object() updates the the map.
759	* It takes into account invisible objects (and represent squares covered	576	* It takes into account invisible objects (and represent squares covered
760	* 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
761	* invisible object, etc...)	578	* invisible object, etc...)
762	* 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
763	* 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
764	* updating that window, though, since update_object() is called _often_)	581	* updating that window, though, since update_object() is called _often_)
765	*	582	*
766	* 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.
767	* For example, if the only thing that has changed is the face (due to
768	* an animation), we don't need to call update_position until that actually
769	* comes into view of a player. OTOH, many other things, like addition/removal
770	* of walls or living creatures may need us to update the flags now.
771	* current action are:	584	* current action are:
772	* UP_OBJ_INSERT: op was inserted	585	* UP_OBJ_INSERT: op was inserted
773	* UP_OBJ_REMOVE: op was removed	586	* UP_OBJ_REMOVE: op was removed
774	* 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
775	* 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.
776	* UP_OBJ_FACE: only the objects face has changed.	589	* UP_OBJ_FACE: only the objects face has changed.
777	*/	590	*/
778		591	void
779	void update_object(object *op, int action) {	592	update_object (object *op, int action)
780	int update_now=0, flags;	593	{
781	MoveType move_on, move_off, move_block, move_slow;	594	MoveType move_on, move_off, move_block, move_slow;
782		595
783	if (op == NULL) {	596	if (op == NULL)
		597	{
784	/* this should never happen */	598	/* this should never happen */
785	LOG(llevDebug,"update_object() called for NULL object.\n");	599	LOG (llevDebug, "update_object() called for NULL object.\n");
786	return;	600	return;
787	}
788		601	}
789	if(op->env!=NULL) {	602
		603	if (op->env)
		604	{
790	/* Animation is currently handled by client, so nothing	605	/* Animation is currently handled by client, so nothing
791	* to do in this case.	606	* to do in this case.
792	*/	607	*/
793	return;	608	return;
794	}	609	}
795		610
796	/* 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
797	* going to get freed anyways.	612	* going to get freed anyways.
798	*/	613	*/
799	if (!op->map || op->map->in_memory == MAP_SAVING) return;	614	if (!op->map || op->map->in_memory == MAP_SAVING)
800		615	return;
		616
801	/* make sure the object is within map boundaries */	617	/* make sure the object is within map boundaries */
802	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)
803	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	619	{
804	LOG(llevError,"update_object() called for object out of map!\n");	620	LOG (llevError, "update_object() called for object out of map!\n");
805	#ifdef MANY_CORES	621	#ifdef MANY_CORES
806	abort();	622	abort ();
807	#endif	623	#endif
808	return;	624	return;
809	}
810		625	}
811	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
812	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
813	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
814	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
815	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
816	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
817		626
		627	mapspace &m = op->ms ();
		628
		629	if (!(m.flags_ & P_UPTODATE))
		630	/* nop */;
818	if (action == UP_OBJ_INSERT) {	631	else if (action == UP_OBJ_INSERT)
		632	{
		633	// this is likely overkill, TODO: revisit (schmorp)
819	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	634	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
820	update_now=1;
821
822	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	635	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
823	update_now=1;	636	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
824		637	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		638	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
825	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	639	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
826	update_now=1;	640	|| (m.move_on | op->move_on ) != m.move_on
827
828	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
829	update_now=1;
830
831	if ((move_on | op->move_on) != move_on) update_now=1;
832	if ((move_off | op->move_off) != move_off) update_now=1;	641	|| (m.move_off | op->move_off ) != m.move_off
		642	|| (m.move_slow | op->move_slow) != m.move_slow
833	/* 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
834	* to have move_allow right now.	644	* to have move_allow right now.
835	*/	645	*/
836	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	646	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
837	update_now=1;	647	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
838	if ((move_slow | op->move_slow) != move_slow) update_now=1;	648	m.flags_ = 0;
839	}	649	}
840	/* if the object is being removed, we can't make intelligent	650	/* if the object is being removed, we can't make intelligent
841	* decisions, because remove_ob can't really pass the object	651	* decisions, because remove_ob can't really pass the object
842	* that is being removed.	652	* that is being removed.
843	*/	653	*/
844	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	654	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
845	update_now=1;	655	m.flags_ = 0;
846	} else if (action == UP_OBJ_FACE) {	656	else if (action == UP_OBJ_FACE)
847	/* Nothing to do for that case */	657	/* Nothing to do for that case */ ;
848	}
849	else {	658	else
850	LOG(llevError,"update_object called with invalid action: %d\n", action);	659	LOG (llevError, "update_object called with invalid action: %d\n", action);
851	}
852		660
853	if (update_now) {
854	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
855	update_position(op->map, op->x, op->y);
856	}
857
858	if(op->more!=NULL)	661	if (op->more)
859	update_object(op->more, action);	662	update_object (op->more, action);
860	}	663	}
861		664
		665	object *object::first;
862		666
863	/*	667	object::object ()
864	* free_object() frees everything allocated by an object, removes	668	{
865	* it from the list of used objects, and puts it on the list of	669	SET_FLAG (this, FLAG_REMOVED);
866	* free objects. The IS_FREED() flag is set in the object.	670
867	* The object must have been removed by remove_ob() first for	671	expmul = 1.0;
868	* this function to succeed.	672	face = blank_face;
869	*	673	}
870	* If free_inventory is set, free inventory as well. Else drop items in	674
871	* inventory to the ground.	675	object::~object ()
872	*/	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	}
873		712
874	void	713	void
875	free_object (object * ob)	714	object::activate ()
876	{	715	{
877	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	}
878	}	731	}
879		732
880	void	733	void
881	free_object2 (object * ob, int free_inventory)	734	object::activate_recursive ()
882	{	735	{
883	object *tmp, *op;	736	activate ();
884		737
885	if (!QUERY_FLAG (ob, FLAG_REMOVED))	738	for (object *op = inv; op; op = op->above)
886	{	739	op->activate_recursive ();
887	LOG (llevDebug, "Free object called with non removed object\n");	740	}
888	dump_object (ob);
889	#ifdef MANY_CORES
890	abort ();
891	#endif
892	}
893		741
894	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	742	/* This function removes object 'op' from the list of active
895	{	743	* objects.
896	LOG (llevMonster, "Warning: tried to free friendly object.\n");	744	* This should only be used for style maps or other such
897	remove_friendly_object (ob);	745	* reference maps where you don't want an object that isn't
898	}	746	* in play chewing up cpu time getting processed.
899		747	* The reverse of this is to call update_ob_speed, which
900	if (QUERY_FLAG (ob, FLAG_FREED))	748	* will do the right thing based on the speed of the object.
901	{	749	*/
902	dump_object (ob);	750	void
903	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 ())
904	return;	755	return;
905	}
906		756
907	if (ob->more != NULL)	757	if (active_prev == 0)
908	{
909	free_object2 (ob->more, free_inventory);
910	ob->more = NULL;
911	}
912
913	if (ob->inv)
914	{
915	/* Only if the space blocks everything do we not process -
916	* if some form of movemnt is allowed, let objects
917	* drop on that space.
918	*/
919	if (free_inventory || ob->map == NULL
920	|| ob->map->in_memory != MAP_IN_MEMORY
921	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
922	{
923	op = ob->inv;
924
925	while (op != NULL)
926	{	758	{
927	tmp = op->below;	759	active_objects = active_next;
928	remove_ob (op);	760	if (active_next)
929	free_object2 (op, free_inventory);	761	active_next->active_prev = 0;
930	op = tmp;
931	}
932	}
933	else
934	{ /* Put objects in inventory onto this space */
935	op = ob->inv;
936
937	while (op != NULL)
938	{
939	tmp = op->below;
940	remove_ob (op);
941
942	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
943	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
944	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
945	free_object (op);
946	else
947	{
948	op->x = ob->x;
949	op->y = ob->y;
950	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
951	}
952
953	op = tmp;
954	}
955	}
956	}
957
958	/* Remove object from the active list */
959	ob->speed = 0;
960	update_ob_speed (ob);
961
962	SET_FLAG (ob, FLAG_FREED);
963	ob->count = 0;
964
965	/* Remove this object from the list of used objects */
966	if (ob->prev == NULL)
967	{
968	objects = ob->next;
969
970	if (objects != NULL)
971	objects->prev = NULL;
972	}	762	}
973	else	763	else
974	{	764	{
975	ob->prev->next = ob->next;	765	active_prev->active_next = active_next;
		766	if (active_next)
		767	active_next->active_prev = active_prev;
		768	}
976		769
977	if (ob->next != NULL)	770	active_next = 0;
978	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 ();
979	}	875	}
980		876
981	free_key_values (ob);	877	map = freed_map;
		878	x = 1;
		879	y = 1;
		880	}
982		881
983	/* Now link it with the free_objects list: */	882	head = 0;
984	ob->prev = 0;
985	ob->next = 0;
986		883
987	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 ();
988	}	909	}
989		910
990	/*	911	/*
991	* sub_weight() recursively (outwards) subtracts a number from the	912	* sub_weight() recursively (outwards) subtracts a number from the
992	* 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)).
993	*/	914	*/
994		915	void
995	void sub_weight (object *op, signed long weight) {	916	sub_weight (object *op, signed long weight)
		917	{
996	while (op != NULL) {	918	while (op != NULL)
		919	{
997	if (op->type == CONTAINER) {	920	if (op->type == CONTAINER)
998	weight=(signed long)(weight*(100-op->stats.Str)/100);	921	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
999	}	922
1000	op->carrying-=weight;	923	op->carrying -= weight;
1001	op = op->env;	924	op = op->env;
1002	}	925	}
1003	}	926	}
1004		927
1005	/* remove_ob(op):	928	/* op->remove ():
1006	* 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
1007	* 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
1008	* object will have no environment. If the object previously had an	931	* object will have no environment. If the object previously had an
1009	* environment, the x and y coordinates will be updated to	932	* environment, the x and y coordinates will be updated to
1010	* the previous environment.	933	* the previous environment.
1011	* Beware: This function is called from the editor as well!	934	* Beware: This function is called from the editor as well!
1012	*/	935	*/
1013		936	void
1014	void remove_ob(object *op) {	937	object::remove ()
		938	{
1015	object *tmp,*last=NULL;	939	object *tmp, *last = 0;
1016	object *otmp;	940	object *otmp;
1017	tag_t tag;
1018	int check_walk_off;
1019	mapstruct *m;
1020	sint16 x,y;
1021
1022		941
1023	if(QUERY_FLAG(op,FLAG_REMOVED)) {	942	if (QUERY_FLAG (this, FLAG_REMOVED))
1024	dump_object(op);	943	return;
1025	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1026		944
1027	/* Changed it to always dump core in this case. As has been learned
1028	* in the past, trying to recover from errors almost always
1029	* make things worse, and this is a real error here - something
1030	* that should not happen.
1031	* Yes, if this was a mission critical app, trying to do something
1032	* to recover may make sense, but that is because failure of the app
1033	* may have other disastrous problems. Cf runs out of a script
1034	* so is easily enough restarted without any real problems.
1035	* MSW 2001-07-01
1036	*/
1037	abort();
1038	}
1039	if(op->more!=NULL)
1040	remove_ob(op->more);
1041
1042	SET_FLAG(op, FLAG_REMOVED);	945	SET_FLAG (this, FLAG_REMOVED);
		946	INVOKE_OBJECT (REMOVE, this);
1043		947
		948	if (more)
		949	more->remove ();
		950
1044	/*	951	/*
1045	* In this case, the object to be removed is in someones	952	* In this case, the object to be removed is in someones
1046	* inventory.	953	* inventory.
1047	*/	954	*/
1048	if(op->env!=NULL) {	955	if (env)
		956	{
1049	if(op->nrof)	957	if (nrof)
1050	sub_weight(op->env, op->weight*op->nrof);	958	sub_weight (env, weight * nrof);
1051	else	959	else
1052	sub_weight(op->env, op->weight+op->carrying);	960	sub_weight (env, weight + carrying);
1053		961
1054	/* 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
1055	* made to players inventory. If set, avoiding the call	963	* made to players inventory. If set, avoiding the call
1056	* to save cpu time.	964	* to save cpu time.
1057	*/	965	*/
1058	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	966	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1059	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	967	otmp->update_stats ();
1060	fix_player(otmp);
1061		968
1062	if(op->above!=NULL)	969	if (above)
1063	op->above->below=op->below;	970	above->below = below;
1064	else	971	else
1065	op->env->inv=op->below;	972	env->inv = below;
1066		973
1067	if(op->below!=NULL)	974	if (below)
1068	op->below->above=op->above;	975	below->above = above;
1069		976
1070	/* we set up values so that it could be inserted into	977	/* we set up values so that it could be inserted into
1071	* 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
1072	* 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
1073	*/	1010	*/
1074	op->x=op->env->x,op->y=op->env->y;	1011	if (GET_MAP_OB (map, x, y) != this)
1075	op->map=op->env->map;	1012	{
1076	op->above=NULL,op->below=NULL;	1013	char *dump = dump_object (this);
1077	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)
1078	return;	1029	return;
1079	}
1080		1030
1081	/* If we get here, we are removing it from a map */	1031	int check_walk_off = !flag [FLAG_NO_APPLY];
1082	if (op->map == NULL) return;
1083		1032
1084	x = op->x;	1033	for (tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
1085	y = op->y;
1086	m = get_map_from_coord(op->map, &x, &y);
1087
1088	if (!m) {
1089	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1090	op->map->path, op->x, op->y);
1091	/* in old days, we used to set x and y to 0 and continue.
1092	* it seems if we get into this case, something is probablye
1093	* screwed up and should be fixed.
1094	*/
1095	abort();
1096	}
1097	if (op->map != m) {
1098	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1099	op->map->path, m->path, op->x, op->y, x, y);
1100	}
1101
1102	/* Re did the following section of code - it looks like it had
1103	* lots of logic for things we no longer care about
1104	*/
1105
1106	/* link the object above us */
1107	if (op->above)
1108	op->above->below=op->below;
1109	else
1110	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1111
1112	/* Relink the object below us, if there is one */
1113	if(op->below) {
1114	op->below->above=op->above;
1115	} else {
1116	/* Nothing below, which means we need to relink map object for this space
1117	* use translated coordinates in case some oddness with map tiling is
1118	* evident
1119	*/
1120	if(GET_MAP_OB(m,x,y)!=op) {
1121	dump_object(op);
1122	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);
1123	dump_object(GET_MAP_OB(m,x,y));
1124	LOG(llevError,"%s\n",errmsg);
1125	}	1034	{
1126	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1127	}
1128	op->above=NULL;
1129	op->below=NULL;
1130
1131	if (op->map->in_memory == MAP_SAVING)
1132	return;
1133
1134	tag = op->count;
1135	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1136	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1137	/* No point updating the players look faces if he is the object	1035	/* No point updating the players look faces if he is the object
1138	* being removed.	1036	* being removed.
1139	*/	1037	*/
1140		1038
1141	if(tmp->type==PLAYER && tmp!=op) {	1039	if (tmp->type == PLAYER && tmp != this)
		1040	{
1142	/* If a container that the player is currently using somehow gets	1041	/* If a container that the player is currently using somehow gets
1143	* removed (most likely destroyed), update the player view	1042	* removed (most likely destroyed), update the player view
1144	* appropriately.	1043	* appropriately.
1145	*/	1044	*/
1146	if (tmp->container==op) {	1045	if (tmp->container == this)
1147	CLEAR_FLAG(op, FLAG_APPLIED);	1046	{
		1047	flag [FLAG_APPLIED] = 0;
1148	tmp->container=NULL;	1048	tmp->container = 0;
		1049	}
		1050
		1051	if (tmp->contr->ns)
		1052	tmp->contr->ns->floorbox_update ();
1149	}	1053	}
1150	tmp->contr->socket.update_look=1;	1054
1151	}
1152	/* See if player moving off should effect something */	1055	/* See if object moving off should effect something */
1153	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1056	if (check_walk_off
		1057	&& ((move_type & tmp->move_off)
1154	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1058	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1155		1059	{
1156	move_apply(tmp, op, NULL);	1060	move_apply (tmp, this, 0);
		1061
1157	if (was_destroyed (op, tag)) {	1062	if (destroyed ())
1158	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 ());
1159	"leaving object\n", &tmp->name, &tmp->arch->name);
1160	}	1064	}
1161	}
1162		1065
1163	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1066	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1164		1067	//TODO: why is this horrible hacka fix? get rid of this code=bug! (schmorp)
1165	if(tmp->above == tmp)	1068	if (tmp->above == tmp)
1166	tmp->above = NULL;	1069	tmp->above = 0;
		1070
1167	last=tmp;	1071	last = tmp;
1168	}	1072	}
		1073
1169	/* last == NULL of there are no objects on this space */	1074	/* last == NULL if there are no objects on this space */
1170	if (last==NULL) {	1075	//TODO: this makes little sense, why only update the topmost object?
1171	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1076	if (!last)
1172	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1077	map->at (x, y).flags_ = 0;
1173	* those out anyways, and if there are any flags set right now, they won't
1174	* be correct anyways.
1175	*/
1176	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1177	update_position(op->map, op->x, op->y);
1178	}
1179	else	1078	else
1180	update_object(last, UP_OBJ_REMOVE);	1079	update_object (last, UP_OBJ_REMOVE);
1181		1080
1182	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1081	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1183	update_all_los(op->map, op->x, op->y);	1082	update_all_los (map, x, y);
1184		1083	}
1185	}	1084	}
1186		1085
1187	/*	1086	/*
1188	* merge_ob(op,top):	1087	* merge_ob(op,top):
1189	*	1088	*
1190	* This function goes through all objects below and including top, and	1089	* This function goes through all objects below and including top, and
1191	* merges op to the first matching object.	1090	* merges op to the first matching object.
1192	* If top is NULL, it is calculated.	1091	* If top is NULL, it is calculated.
1193	* 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
1194	*/	1093	*/
1195		1094	object *
1196	object *merge_ob(object *op, object *top) {	1095	merge_ob (object *op, object *top)
		1096	{
1197	if(!op->nrof)	1097	if (!op->nrof)
1198	return 0;	1098	return 0;
1199	if(top==NULL)	1099
		1100	if (top)
1200	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1101	for (top = op; top && top->above; top = top->above)
		1102	;
		1103
1201	for(;top!=NULL;top=top->below) {	1104	for (; top; top = top->below)
		1105	{
1202	if(top==op)	1106	if (top == op)
1203	continue;	1107	continue;
1204	if (CAN_MERGE(op,top))	1108
1205	{	1109	if (object::can_merge (op, top))
		1110	{
1206	top->nrof+=op->nrof;	1111	top->nrof += op->nrof;
		1112
1207	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1113	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1208	op->weight = 0; /* Don't want any adjustements now */	1114	op->weight = 0; /* Don't want any adjustements now */
1209	remove_ob(op);	1115	op->destroy ();
1210	free_object(op);
1211	return top;	1116	return top;
1212	}	1117	}
1213	}	1118	}
		1119
1214	return NULL;	1120	return 0;
1215	}	1121	}
1216		1122
1217	/*	1123	/*
1218	* 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
1219	* job preparing multi-part monsters	1125	* job preparing multi-part monsters
1220	*/	1126	*/
		1127	object *
1221	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)
1222	object* tmp;	1129	{
1223	if (op->head)	1130	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1224	op=op->head;	1131	{
1225	for (tmp=op;tmp;tmp=tmp->more){
1226	tmp->x=x+tmp->arch->clone.x;	1132	tmp->x = x + tmp->arch->clone.x;
1227	tmp->y=y+tmp->arch->clone.y;	1133	tmp->y = y + tmp->arch->clone.y;
1228	}	1134	}
		1135
1229	return insert_ob_in_map (op, m, originator, flag);	1136	return insert_ob_in_map (op, m, originator, flag);
1230	}	1137	}
1231		1138
1232	/*	1139	/*
1233	* insert_ob_in_map (op, map, originator, flag):	1140	* insert_ob_in_map (op, map, originator, flag):
1234	* This function inserts the object in the two-way linked list	1141	* This function inserts the object in the two-way linked list
…		…
1247	* Return value:	1154	* Return value:
1248	* new object if 'op' was merged with other object	1155	* new object if 'op' was merged with other object
1249	* NULL if 'op' was destroyed	1156	* NULL if 'op' was destroyed
1250	* just 'op' otherwise	1157	* just 'op' otherwise
1251	*/	1158	*/
1252		1159	object *
1253	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)
1254	{	1161	{
1255	object *tmp, *top, *floor=NULL;	1162	object *tmp, *top, *floor = NULL;
1256	sint16 x,y;	1163	sint16 x, y;
1257		1164
1258	if (QUERY_FLAG (op, FLAG_FREED)) {	1165	if (QUERY_FLAG (op, FLAG_FREED))
		1166	{
1259	LOG (llevError, "Trying to insert freed object!\n");	1167	LOG (llevError, "Trying to insert freed object!\n");
1260	return NULL;	1168	return NULL;
		1169	}
		1170
		1171	if (!m)
1261	}	1172	{
1262	if(m==NULL) {
1263	dump_object(op);	1173	char *dump = dump_object (op);
1264	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);
1265	return op;	1176	return op;
1266	}	1177	}
		1178
1267	if(out_of_map(m,op->x,op->y)) {	1179	if (out_of_map (m, op->x, op->y))
		1180	{
1268	dump_object(op);	1181	char *dump = dump_object (op);
1269	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);
1270	#ifdef MANY_CORES	1183	#ifdef MANY_CORES
1271	/* 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
1272	* 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
1273	* improperly inserted.	1186	* improperly inserted.
1274	*/	1187	*/
1275	abort();	1188	abort ();
1276	#endif	1189	#endif
		1190	free (dump);
1277	return op;	1191	return op;
1278	}	1192	}
		1193
1279	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1194	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1195	{
1280	dump_object(op);	1196	char *dump = dump_object (op);
1281	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);
1282	return op;	1199	return op;
		1200	}
		1201
		1202	if (op->more)
1283	}	1203	{
1284	if(op->more!=NULL) {
1285	/* The part may be on a different map. */	1204	/* The part may be on a different map. */
1286		1205
1287	object *more = op->more;	1206	object *more = op->more;
1288		1207
1289	/* We really need the caller to normalize coordinates - if	1208	/* We really need the caller to normalize coordinates - if
1290	* 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
1291	* 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
1292	* is clear wrong do we normalize it.	1211	* is clear wrong do we normalize it.
1293	*/	1212	*/
1294	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1213	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1295	more->map = get_map_from_coord(m, &more->x, &more->y);	1214	more->map = get_map_from_coord (m, &more->x, &more->y);
1296	} else if (!more->map) {	1215	else if (!more->map)
		1216	{
1297	/* For backwards compatibility - when not dealing with tiled maps,	1217	/* For backwards compatibility - when not dealing with tiled maps,
1298	* more->map should always point to the parent.	1218	* more->map should always point to the parent.
1299	*/	1219	*/
1300	more->map = m;	1220	more->map = m;
1301	}	1221	}
1302		1222
1303	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1223	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1224	{
1304	if ( ! op->head)	1225	if (!op->head)
1305	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
1306	return NULL;	1228	return 0;
1307	}	1229	}
1308	}	1230	}
		1231
1309	CLEAR_FLAG(op,FLAG_REMOVED);	1232	CLEAR_FLAG (op, FLAG_REMOVED);
1310		1233
1311	/* Ideally, the caller figures this out. However, it complicates a lot	1234	/* Ideally, the caller figures this out. However, it complicates a lot
1312	* 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
1313	* need extra work	1236	* need extra work
1314	*/	1237	*/
1315	op->map=get_map_from_coord(m, &op->x, &op->y);	1238	op->map = get_map_from_coord (m, &op->x, &op->y);
1316	x = op->x;	1239	x = op->x;
1317	y = op->y;	1240	y = op->y;
1318		1241
1319	/* this has to be done after we translate the coordinates.	1242	/* this has to be done after we translate the coordinates.
1320	*/	1243	*/
1321	if(op->nrof && !(flag & INS_NO_MERGE)) {	1244	if (op->nrof && !(flag & INS_NO_MERGE))
1322	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)
1323	if (CAN_MERGE(op,tmp)) {	1246	if (object::can_merge (op, tmp))
		1247	{
1324	op->nrof+=tmp->nrof;	1248	op->nrof += tmp->nrof;
1325	remove_ob(tmp);	1249	tmp->destroy ();
1326	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;
1327	}	1310	}
1328	}
1329		1311
1330	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 */
1331	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1313	top = last;
1332	if (!QUERY_FLAG(op, FLAG_ALIVE))
1333	CLEAR_FLAG(op, FLAG_NO_STEAL);
1334		1314
1335	if (flag & INS_BELOW_ORIGINATOR) {	1315	/* We let update_position deal with figuring out what the space
1336	if (originator->map != op->map || originator->x != op->x ||	1316	* looks like instead of lots of conditions here.
1337	originator->y != op->y) {	1317	* makes things faster, and effectively the same result.
1338	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1339	abort();
1340	}
1341	op->above = originator;
1342	op->below = originator->below;
1343	if (op->below) op->below->above = op;
1344	else SET_MAP_OB(op->map, op->x, op->y, op);
1345	/* since *below* originator, no need to update top */
1346	originator->below = op;
1347	} else {
1348	/* If there are other objects, then */
1349	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1350	object *last=NULL;
1351	/*	1318	*/
1352	* If there are multiple objects on this space, we do some trickier handling.	1319
1353	* We've already dealt with merging if appropriate.	1320	/* Have object 'fall below' other objects that block view.
1354	* Generally, we want to put the new object on top. But if	1321	* Unless those objects are exits, type 66
1355	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1322	* If INS_ON_TOP is used, don't do this processing
1356	* floor, we want to insert above that and no further.	1323	* Need to find the object that in fact blocks view, otherwise
1357	* Also, if there are spell objects on this space, we stop processing	1324	* stacking is a bit odd.
1358	* once we get to them. This reduces the need to traverse over all of	1325	*/
1359	* them when adding another one - this saves quite a bit of cpu time	1326	if (!(flag & INS_ON_TOP) &&
1360	* 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))
1361	* 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.
1362	*/	1336	*/
1363		1337	if (last && last->below && last != floor)
1364	while (top != NULL) {
1365	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1366	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1367	if (QUERY_FLAG(top, FLAG_NO_PICK)
1368	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1369	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1370	{
1371	/* We insert above top, so we want this object below this */
1372	top=top->below;
1373	break;
1374	}
1375	last = top;
1376	top = top->above;	1338	top = last->below;
1377	}	1339	}
1378	/* Don't want top to be NULL, so set it to the last valid object */
1379	top = last;
1380
1381	/* We let update_position deal with figuring out what the space
1382	* looks like instead of lots of conditions here.
1383	* makes things faster, and effectively the same result.
1384	*/
1385
1386	/* Have object 'fall below' other objects that block view.
1387	* Unless those objects are exits, type 66
1388	* If INS_ON_TOP is used, don't do this processing
1389	* Need to find the object that in fact blocks view, otherwise
1390	* stacking is a bit odd.
1391	*/
1392	if (!(flag & INS_ON_TOP) &&
1393	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1394	(op->face && !op->face->visibility)) {
1395	for (last=top; last != floor; last=last->below)
1396	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1397	/* Check to see if we found the object that blocks view,
1398	* and make sure we have a below pointer for it so that
1399	* we can get inserted below this one, which requires we
1400	* set top to the object below us.
1401	*/
1402	if (last && last->below && last != floor) top=last->below;
1403	}
1404	} /* If objects on this space */	1340	} /* If objects on this space */
		1341
1405	if (flag & INS_MAP_LOAD)	1342	if (flag & INS_MAP_LOAD)
1406	top = GET_MAP_TOP(op->map,op->x,op->y);	1343	top = GET_MAP_TOP (op->map, op->x, op->y);
		1344
1407	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1345	if (flag & INS_ABOVE_FLOOR_ONLY)
		1346	top = floor;
1408		1347
1409	/* 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.
1410	*/	1349	*/
1411		1350
1412	/* First object on this space */	1351	/* First object on this space */
1413	if (!top) {	1352	if (!top)
		1353	{
1414	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)
1415	if (op->above) op->above->below = op;	1357	op->above->below = op;
		1358
1416	op->below = NULL;	1359	op->below = 0;
1417	SET_MAP_OB(op->map, op->x, op->y, op);	1360	op->ms ().bot = op;
		1361	}
		1362	else
1418	} else { /* get inserted into the stack above top */	1363	{ /* get inserted into the stack above top */
1419	op->above = top->above;	1364	op->above = top->above;
		1365
		1366	if (op->above)
1420	if (op->above) op->above->below = op;	1367	op->above->below = op;
		1368
1421	op->below = top;	1369	op->below = top;
1422	top->above = op;	1370	top->above = op;
1423	}	1371	}
		1372
1424	if (op->above==NULL)	1373	if (!op->above)
1425	SET_MAP_TOP(op->map,op->x, op->y, op);	1374	op->ms ().top = op;
1426	} /* else not INS_BELOW_ORIGINATOR */	1375	} /* else not INS_BELOW_ORIGINATOR */
1427		1376
1428	if(op->type==PLAYER)	1377	if (op->type == PLAYER)
		1378	{
1429	op->contr->do_los=1;	1379	op->contr->do_los = 1;
		1380	++op->map->players;
		1381	op->map->touch ();
		1382	}
1430		1383
		1384	op->map->dirty = true;
		1385
1431	/* 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
1432	* it, so save a few ticks and start from there.	1387	* it, so save a few ticks and start from there.
1433	*/	1388	*/
1434	if (!(flag & INS_MAP_LOAD))	1389	if (!(flag & INS_MAP_LOAD))
1435	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 ())
1436	if (tmp->type == PLAYER)	1391	if (pl->contr->ns)
1437	tmp->contr->socket.update_look=1;	1392	pl->contr->ns->floorbox_update ();
1438	}
1439		1393
1440	/* If this object glows, it may affect lighting conditions that are	1394	/* If this object glows, it may affect lighting conditions that are
1441	* 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
1442	* 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
1443	* on the map will get recalculated. The players could very well	1397	* on the map will get recalculated. The players could very well
1444	* 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 -
1445	* this should get redone to only look for players within range,	1399	* this should get redone to only look for players within range,
1446	* or just updating the P_NEED_UPDATE for spaces within this area	1400	* or just updating the P_UPTODATE for spaces within this area
1447	* of effect may be sufficient.	1401	* of effect may be sufficient.
1448	*/	1402	*/
1449	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1403	if (op->map->darkness && (op->glow_radius != 0))
1450	update_all_los(op->map, op->x, op->y);	1404	update_all_los (op->map, op->x, op->y);
1451		1405
1452
1453	/* updates flags (blocked, alive, no magic, etc) for this map space */	1406	/* updates flags (blocked, alive, no magic, etc) for this map space */
1454	update_object(op,UP_OBJ_INSERT);	1407	update_object (op, UP_OBJ_INSERT);
1455		1408
		1409	INVOKE_OBJECT (INSERT, op);
1456		1410
1457	/* 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,
1458	* we want to have update_look set above before calling this.	1412	* we want to have floorbox_update called before calling this.
1459	*	1413	*
1460	* check_move_on() must be after this because code called from	1414	* check_move_on() must be after this because code called from
1461	* check_move_on() depends on correct map flags (so functions like	1415	* check_move_on() depends on correct map flags (so functions like
1462	* blocked() and wall() work properly), and these flags are updated by	1416	* blocked() and wall() work properly), and these flags are updated by
1463	* update_object().	1417	* update_object().
1464	*/	1418	*/
1465		1419
1466	/* 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 */
1467
1468	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1421	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1422	{
1469	if (check_move_on(op, originator))	1423	if (check_move_on (op, originator))
1470	return NULL;	1424	return 0;
1471		1425
1472	/* 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
1473	* walk on's.	1427	* walk on's.
1474	*/	1428	*/
1475	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1429	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1476	if (check_move_on (tmp, originator))	1430	if (check_move_on (tmp, originator))
1477	return NULL;	1431	return 0;
1478	}	1432	}
		1433
1479	return op;	1434	return op;
1480	}	1435	}
1481		1436
1482	/* this function inserts an object in the map, but if it	1437	/* this function inserts an object in the map, but if it
1483	* finds an object of its own type, it'll remove that one first.	1438	* finds an object of its own type, it'll remove that one first.
1484	* op is the object to insert it under: supplies x and the map.	1439	* op is the object to insert it under: supplies x and the map.
1485	*/	1440	*/
		1441	void
1486	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1442	replace_insert_ob_in_map (const char *arch_string, object *op)
1487	object *tmp;	1443	{
1488	object *tmp1;	1444	object *tmp, *tmp1;
1489		1445
1490	/* first search for itself and remove any old instances */	1446	/* first search for itself and remove any old instances */
1491		1447
1492	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)
1493	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1449	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1494	remove_ob(tmp);	1450	tmp->destroy ();
1495	free_object(tmp);
1496	}
1497	}
1498		1451
1499	tmp1=arch_to_object(find_archetype(arch_string));	1452	tmp1 = arch_to_object (archetype::find (arch_string));
1500		1453
1501		1454	tmp1->x = op->x;
1502	tmp1->x = op->x; tmp1->y = op->y;	1455	tmp1->y = op->y;
1503	insert_ob_in_map(tmp1,op->map,op,0);	1456	insert_ob_in_map (tmp1, op->map, op, 0);
1504	}	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	}
1505		1464
1506	/*	1465	/*
1507	* 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
1508	* is returned contains nr objects, and the remaining parts contains	1467	* is returned contains nr objects, and the remaining parts contains
1509	* 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).
1510	* On failure, NULL is returned, and the reason put into the	1469	* On failure, NULL is returned, and the reason put into the
1511	* global static errmsg array.	1470	* global static errmsg array.
1512	*/	1471	*/
1513		1472	object *
1514	object *get_split_ob(object *orig_ob, uint32 nr) {	1473	get_split_ob (object *orig_ob, uint32 nr)
		1474	{
1515	object *newob;	1475	object *newob;
1516	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1476	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1517		1477
1518	if(orig_ob->nrof<nr) {	1478	if (orig_ob->nrof < nr)
1519	sprintf(errmsg,"There are only %d %ss.",	1479	{
1520	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);
1521	return NULL;	1481	return NULL;
1522	}	1482	}
		1483
1523	newob = object_create_clone(orig_ob);	1484	newob = object_create_clone (orig_ob);
		1485
1524	if((orig_ob->nrof-=nr)<1) {	1486	if ((orig_ob->nrof -= nr) < 1)
1525	if ( ! is_removed)	1487	orig_ob->destroy (1);
1526	remove_ob(orig_ob);
1527	free_object2(orig_ob, 1);
1528	}
1529	else if ( ! is_removed) {	1488	else if (!is_removed)
		1489	{
1530	if(orig_ob->env!=NULL)	1490	if (orig_ob->env != NULL)
1531	sub_weight (orig_ob->env,orig_ob->weight*nr);	1491	sub_weight (orig_ob->env, orig_ob->weight * nr);
1532	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	{
1533	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.");
1534	LOG(llevDebug,
1535	"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");
1536	return NULL;	1496	return NULL;
1537	}	1497	}
1538	}	1498	}
		1499
1539	newob->nrof=nr;	1500	newob->nrof = nr;
1540		1501
1541	return newob;	1502	return newob;
1542	}	1503	}
1543		1504
1544	/*	1505	/*
1545	* decrease_ob_nr(object, number) decreases a specified number from	1506	* decrease_ob_nr(object, number) decreases a specified number from
1546	* 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
1547	* is subsequently removed and freed.	1508	* is subsequently removed and freed.
1548	*	1509	*
1549	* 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
1550	*/	1511	*/
1551		1512
		1513	object *
1552	object *decrease_ob_nr (object *op, uint32 i)	1514	decrease_ob_nr (object *op, uint32 i)
1553	{	1515	{
1554	object *tmp;	1516	object *tmp;
1555	player *pl;
1556		1517
1557	if (i == 0) /* objects with op->nrof require this check */	1518	if (i == 0) /* objects with op->nrof require this check */
1558	return op;	1519	return op;
1559		1520
1560	if (i > op->nrof)	1521	if (i > op->nrof)
1561	i = op->nrof;	1522	i = op->nrof;
1562		1523
1563	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	}
1564	{	1560	}
		1561	else
		1562	{
		1563	object *above = op->above;
		1564
		1565	if (i < op->nrof)
1565	op->nrof -= i;	1566	op->nrof -= i;
1566	}	1567	else
1567	else if (op->env != NULL)
1568	{
1569	/* is this object in the players inventory, or sub container
1570	* therein?
1571	*/
1572	tmp = is_player_inv (op->env);
1573	/* nope. Is this a container the player has opened?
1574	* If so, set tmp to that player.
1575	* IMO, searching through all the players will mostly
1576	* likely be quicker than following op->env to the map,
1577	* and then searching the map for a player.
1578	*/
1579	if (!tmp) {
1580	for (pl=first_player; pl; pl=pl->next)
1581	if (pl->ob->container == op->env) break;
1582	if (pl) tmp=pl->ob;
1583	else tmp=NULL;
1584	}	1568	{
1585
1586	if (i < op->nrof) {
1587	sub_weight (op->env, op->weight * i);
1588	op->nrof -= i;
1589	if (tmp) {
1590	esrv_send_item(tmp, op);
1591	}
1592	} else {
1593	remove_ob (op);	1569	op->remove ();
1594	op->nrof = 0;	1570	op->nrof = 0;
1595	if (tmp) {
1596	esrv_del_item(tmp->contr, op->count);
1597	}	1571	}
1598	}
1599	}
1600	else
1601	{
1602	object *above = op->above;
1603		1572
1604	if (i < op->nrof) {
1605	op->nrof -= i;
1606	} else {
1607	remove_ob (op);
1608	op->nrof = 0;
1609	}
1610	/* Since we just removed op, op->above is null */	1573	/* Since we just removed op, op->above is null */
1611	for (tmp = above; tmp != NULL; tmp = tmp->above)	1574	for (tmp = above; tmp; tmp = tmp->above)
1612	if (tmp->type == PLAYER) {	1575	if (tmp->type == PLAYER)
		1576	{
1613	if (op->nrof)	1577	if (op->nrof)
1614	esrv_send_item(tmp, op);	1578	esrv_send_item (tmp, op);
1615	else	1579	else
1616	esrv_del_item(tmp->contr, op->count);	1580	esrv_del_item (tmp->contr, op->count);
1617	}	1581	}
1618	}	1582	}
1619		1583
1620	if (op->nrof) {	1584	if (op->nrof)
1621	return op;	1585	return op;
1622	} else {	1586	else
1623	free_object (op);	1587	{
		1588	op->destroy ();
1624	return NULL;	1589	return 0;
1625	}	1590	}
1626	}	1591	}
1627		1592
1628	/*	1593	/*
1629	* add_weight(object, weight) adds the specified weight to an object,	1594	* add_weight(object, weight) adds the specified weight to an object,
1630	* and also updates how much the environment(s) is/are carrying.	1595	* and also updates how much the environment(s) is/are carrying.
1631	*/	1596	*/
1632		1597
		1598	void
1633	void add_weight (object *op, signed long weight) {	1599	add_weight (object *op, signed long weight)
		1600	{
1634	while (op!=NULL) {	1601	while (op != NULL)
		1602	{
1635	if (op->type == CONTAINER) {	1603	if (op->type == CONTAINER)
1636	weight=(signed long)(weight*(100-op->stats.Str)/100);	1604	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1637	}	1605
1638	op->carrying+=weight;	1606	op->carrying += weight;
1639	op=op->env;	1607	op = op->env;
1640	}	1608	}
1641	}	1609	}
1642		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
1643	/*	1631	/*
1644	* insert_ob_in_ob(op,environment):	1632	* env->insert (op)
1645	* This function inserts the object op in the linked list	1633	* This function inserts the object op in the linked list
1646	* inside the object environment.	1634	* inside the object environment.
1647	*	1635	*
1648	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1649	* the inventory at the last position or next to other objects of the same
1650	* type.
1651	* Frank: Now sorted by type, archetype and magic!
1652	*
1653	* The function returns now pointer to inserted item, and return value can	1636	* The function returns now pointer to inserted item, and return value can
1654	* be != op, if items are merged. -Tero	1637	* be != op, if items are merged. -Tero
1655	*/	1638	*/
1656		1639
1657	object *insert_ob_in_ob(object *op,object *where) {	1640	object *
		1641	object::insert (object *op)
		1642	{
1658	object *tmp, *otmp;	1643	object *tmp, *otmp;
1659		1644
1660	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1645	if (!QUERY_FLAG (op, FLAG_REMOVED))
1661	dump_object(op);	1646	op->remove ();
1662	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1647
1663	return op;
1664	}
1665	if(where==NULL) {
1666	dump_object(op);
1667	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1668	return op;
1669	}
1670	if (where->head) {
1671	LOG(llevDebug,
1672	"Warning: Tried to insert object wrong part of multipart object.\n");
1673	where = where->head;
1674	}
1675	if (op->more) {	1648	if (op->more)
		1649	{
1676	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);
1677	&op->name, op->count);
1678	return op;	1651	return op;
1679	}	1652	}
		1653
1680	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1654	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1681	CLEAR_FLAG(op, FLAG_REMOVED);	1655	CLEAR_FLAG (op, FLAG_REMOVED);
1682	if(op->nrof) {	1656	if (op->nrof)
		1657	{
1683	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1658	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1684	if ( CAN_MERGE(tmp,op) ) {	1659	if (object::can_merge (tmp, op))
		1660	{
1685	/* return the original object and remove inserted object	1661	/* return the original object and remove inserted object
1686	(client needs the original object) */	1662	(client needs the original object) */
1687	tmp->nrof += op->nrof;	1663	tmp->nrof += op->nrof;
1688	/* Weight handling gets pretty funky. Since we are adding to	1664	/* Weight handling gets pretty funky. Since we are adding to
1689	* tmp->nrof, we need to increase the weight.	1665	* tmp->nrof, we need to increase the weight.
1690	*/	1666	*/
1691	add_weight (where, op->weight*op->nrof);	1667	add_weight (this, op->weight * op->nrof);
1692	SET_FLAG(op, FLAG_REMOVED);	1668	SET_FLAG (op, FLAG_REMOVED);
1693	free_object(op); /* free the inserted object */	1669	op->destroy (); /* free the inserted object */
1694	op = tmp;	1670	op = tmp;
1695	remove_ob (op); /* and fix old object's links */	1671	op->remove (); /* and fix old object's links */
1696	CLEAR_FLAG(op, FLAG_REMOVED);	1672	CLEAR_FLAG (op, FLAG_REMOVED);
1697	break;	1673	break;
1698	}	1674	}
1699		1675
1700	/* I assume combined objects have no inventory	1676	/* I assume combined objects have no inventory
1701	* We add the weight - this object could have just been removed	1677	* We add the weight - this object could have just been removed
1702	* (if it was possible to merge). calling remove_ob will subtract	1678	* (if it was possible to merge). calling remove_ob will subtract
1703	* 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
1704	* the linking below	1680	* the linking below
1705	*/	1681	*/
1706	add_weight (where, op->weight*op->nrof);	1682	add_weight (this, op->weight * op->nrof);
		1683	}
1707	} else	1684	else
1708	add_weight (where, (op->weight+op->carrying));	1685	add_weight (this, (op->weight + op->carrying));
1709		1686
1710	otmp=is_player_inv(where);	1687	otmp = this->in_player ();
1711	if (otmp&&otmp->contr!=NULL) {	1688	if (otmp && otmp->contr)
1712	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1689	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1713	fix_player(otmp);	1690	otmp->update_stats ();
1714	}
1715		1691
1716	op->map=NULL;	1692	op->map = 0;
1717	op->env=where;	1693	op->env = this;
1718	op->above=NULL;	1694	op->above = 0;
1719	op->below=NULL;	1695	op->below = 0;
1720	op->x=0,op->y=0;	1696	op->x = 0, op->y = 0;
1721		1697
1722	/* 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 */
1723	if((op->glow_radius!=0)&&where->map)	1699	if ((op->glow_radius != 0) && map)
1724	{	1700	{
1725	#ifdef DEBUG_LIGHTS	1701	#ifdef DEBUG_LIGHTS
1726	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);
1727	op->name);
1728	#endif /* DEBUG_LIGHTS */	1703	#endif /* DEBUG_LIGHTS */
1729	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);
1730	}	1706	}
1731		1707
1732	/* 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.
1733	* It sure simplifies this function...	1709	* It sure simplifies this function...
1734	*/	1710	*/
1735	if (where->inv==NULL)	1711	if (!inv)
1736	where->inv=op;	1712	inv = op;
1737	else {	1713	else
		1714	{
1738	op->below = where->inv;	1715	op->below = inv;
1739	op->below->above = op;	1716	op->below->above = op;
1740	where->inv = op;	1717	inv = op;
1741	}	1718	}
		1719
		1720	INVOKE_OBJECT (INSERT, this);
		1721
1742	return op;	1722	return op;
1743	}	1723	}
1744		1724
1745	/*	1725	/*
1746	* Checks if any objects has a move_type that matches objects	1726	* Checks if any objects has a move_type that matches objects
…		…
1760	*	1740	*
1761	* 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
1762	* 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
1763	* on top.	1743	* on top.
1764	*/	1744	*/
1765		1745	int
1766	int check_move_on (object *op, object *originator)	1746	check_move_on (object *op, object *originator)
1767	{	1747	{
1768	object *tmp;	1748	object *tmp;
1769	tag_t tag;
1770	mapstruct *m=op->map;	1749	maptile *m = op->map;
1771	int x=op->x, y=op->y;	1750	int x = op->x, y = op->y;
		1751
1772	MoveType move_on, move_slow, move_block;	1752	MoveType move_on, move_slow, move_block;
1773		1753
1774	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1754	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1775	return 0;	1755	return 0;
1776		1756
1777	tag = op->count;
1778
1779	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);
1780	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);
1781	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);
1782		1760
1783	/* 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,
1784	* 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
1785	* 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
1786	* as walking.	1764	* as walking.
1787	*/	1765	*/
1788	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))
1789	return 0;	1767	return 0;
1790		1768
1791	/* This is basically inverse logic of that below - basically,	1769	/* This is basically inverse logic of that below - basically,
1792	* 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,
1793	* 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
1794	* blocked. Logic on this seems confusing, but does seem correct.	1772	* blocked. Logic on this seems confusing, but does seem correct.
1795	*/	1773	*/
1796	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)
1797	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1775	return 0;
1798		1776
1799	/* The objects have to be checked from top to bottom.	1777	/* The objects have to be checked from top to bottom.
1800	* Hence, we first go to the top:	1778	* Hence, we first go to the top:
1801	*/	1779	*/
1802		1780
1803	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)
1804	tmp->above!=NULL; tmp=tmp->above) {	1782	{
1805	/* Trim the search when we find the first other spell effect	1783	/* Trim the search when we find the first other spell effect
1806	* 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,
1807	* we don't need to check all of them.	1785	* we don't need to check all of them.
1808	*/	1786	*/
1809	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)
1810	}	1792	{
1811	for(;tmp!=NULL; tmp=tmp->below) {	1793	if (tmp == op)
1812	if (tmp == op) continue; /* Can't apply yourself */	1794	continue; /* Can't apply yourself */
1813		1795
1814	/* 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.
1815	* Second check makes sure that the movement types not being slowed	1797	* Second check makes sure that the movement types not being slowed
1816	* (~slow_move) is not blocked on this space - just because the	1798	* (~slow_move) is not blocked on this space - just because the
1817	* space doesn't slow down swimming (for example), if you can't actually	1799	* space doesn't slow down swimming (for example), if you can't actually
1818	* swim on that space, can't use it to avoid the penalty.	1800	* swim on that space, can't use it to avoid the penalty.
1819	*/	1801	*/
1820	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1802	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1803	{
1821	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1804	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1822	((op->move_type & tmp->move_slow) &&
1823	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1805	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1806	{
1824		1807
1825	float diff;	1808	float
1826
1827	diff = tmp->move_slow_penalty*FABS(op->speed);	1809	diff = tmp->move_slow_penalty * FABS (op->speed);
		1810
1828	if (op->type == PLAYER) {	1811	if (op->type == PLAYER)
1829	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)) ||
1830	(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)))
1831	diff /= 4.0;	1814	diff /= 4.0;
1832	}	1815
1833	}
1834	op->speed_left -= diff;	1816	op->speed_left -= diff;
1835	}	1817	}
1836	}	1818	}
1837		1819
1838	/* Basically same logic as above, except now for actual apply. */	1820	/* Basically same logic as above, except now for actual apply. */
1839	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1821	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1840	((op->move_type & tmp->move_on) &&
1841	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1822	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1842		1823	{
1843	move_apply(tmp, op, originator);	1824	move_apply (tmp, op, originator);
		1825
1844	if (was_destroyed (op, tag))	1826	if (op->destroyed ())
1845	return 1;	1827	return 1;
1846		1828
1847	/* what the person/creature stepped onto has moved the object	1829	/* what the person/creature stepped onto has moved the object
1848	* someplace new. Don't process any further - if we did,	1830	* someplace new. Don't process any further - if we did,
1849	* have a feeling strange problems would result.	1831	* have a feeling strange problems would result.
1850	*/	1832	*/
1851	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;
1852	}	1835	}
1853	}	1836	}
		1837
1854	return 0;	1838	return 0;
1855	}	1839	}
1856		1840
1857	/*	1841	/*
1858	* present_arch(arch, map, x, y) searches for any objects with	1842	* present_arch(arch, map, x, y) searches for any objects with
1859	* a matching archetype at the given map and coordinates.	1843	* a matching archetype at the given map and coordinates.
1860	* The first matching object is returned, or NULL if none.	1844	* The first matching object is returned, or NULL if none.
1861	*/	1845	*/
1862		1846	object *
1863	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1847	present_arch (const archetype *at, maptile *m, int x, int y)
1864	object *tmp;	1848	{
1865	if(m==NULL || out_of_map(m,x,y)) {	1849	if (m == NULL || out_of_map (m, x, y))
		1850	{
1866	LOG(llevError,"Present_arch called outside map.\n");	1851	LOG (llevError, "Present_arch called outside map.\n");
1867	return NULL;	1852	return NULL;
1868	}	1853	}
		1854
1869	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)
1870	if(tmp->arch == at)	1856	if (tmp->arch == at)
1871	return tmp;	1857	return tmp;
		1858
1872	return NULL;	1859	return NULL;
1873	}	1860	}
1874		1861
1875	/*	1862	/*
1876	* present(type, map, x, y) searches for any objects with	1863	* present(type, map, x, y) searches for any objects with
1877	* a matching type variable at the given map and coordinates.	1864	* a matching type variable at the given map and coordinates.
1878	* The first matching object is returned, or NULL if none.	1865	* The first matching object is returned, or NULL if none.
1879	*/	1866	*/
1880		1867	object *
1881	object *present(unsigned char type,mapstruct *m, int x,int y) {	1868	present (unsigned char type, maptile *m, int x, int y)
1882	object *tmp;	1869	{
1883	if(out_of_map(m,x,y)) {	1870	if (out_of_map (m, x, y))
		1871	{
1884	LOG(llevError,"Present called outside map.\n");	1872	LOG (llevError, "Present called outside map.\n");
1885	return NULL;	1873	return NULL;
1886	}	1874	}
		1875
1887	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)
1888	if(tmp->type==type)	1877	if (tmp->type == type)
1889	return tmp;	1878	return tmp;
		1879
1890	return NULL;	1880	return NULL;
1891	}	1881	}
1892		1882
1893	/*	1883	/*
1894	* present_in_ob(type, object) searches for any objects with	1884	* present_in_ob(type, object) searches for any objects with
1895	* a matching type variable in the inventory of the given object.	1885	* a matching type variable in the inventory of the given object.
1896	* The first matching object is returned, or NULL if none.	1886	* The first matching object is returned, or NULL if none.
1897	*/	1887	*/
1898		1888	object *
1899	object *present_in_ob(unsigned char type, const object *op) {	1889	present_in_ob (unsigned char type, const object *op)
1900	object *tmp;	1890	{
1901	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1891	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1902	if(tmp->type==type)	1892	if (tmp->type == type)
1903	return tmp;	1893	return tmp;
		1894
1904	return NULL;	1895	return NULL;
1905	}	1896	}
1906		1897
1907	/*	1898	/*
1908	* present_in_ob (type, str, object) searches for any objects with	1899	* present_in_ob (type, str, object) searches for any objects with
…		…
1916	* 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
1917	* 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
1918	* 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
1919	* to be unique.	1910	* to be unique.
1920	*/	1911	*/
1921		1912	object *
1922	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)
1923	object *tmp;	1914	{
1924
1925	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1915	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1926	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1916	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1927	return tmp;	1917	return tmp;
1928	}	1918
1929	return NULL;	1919	return 0;
1930	}	1920	}
1931		1921
1932	/*	1922	/*
1933	* present_arch_in_ob(archetype, object) searches for any objects with	1923	* present_arch_in_ob(archetype, object) searches for any objects with
1934	* a matching archetype in the inventory of the given object.	1924	* a matching archetype in the inventory of the given object.
1935	* The first matching object is returned, or NULL if none.	1925	* The first matching object is returned, or NULL if none.
1936	*/	1926	*/
1937		1927	object *
1938	object *present_arch_in_ob(const archetype *at, const object *op) {	1928	present_arch_in_ob (const archetype *at, const object *op)
1939	object *tmp;	1929	{
1940	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1930	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1941	if( tmp->arch == at)	1931	if (tmp->arch == at)
1942	return tmp;	1932	return tmp;
		1933
1943	return NULL;	1934	return NULL;
1944	}	1935	}
1945		1936
1946	/*	1937	/*
1947	* activate recursively a flag on an object inventory	1938	* activate recursively a flag on an object inventory
1948	*/	1939	*/
		1940	void
1949	void flag_inv(object*op, int flag){	1941	flag_inv (object *op, int flag)
1950	object *tmp;	1942	{
1951	if(op->inv)	1943	if (op->inv)
1952	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1944	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1945	{
1953	SET_FLAG(tmp, flag);	1946	SET_FLAG (tmp, flag);
1954	flag_inv(tmp,flag);	1947	flag_inv (tmp, flag);
1955	}	1948	}
		1949	}
		1950
1956	}/*	1951	/*
1957	* desactivate recursively a flag on an object inventory	1952	* deactivate recursively a flag on an object inventory
1958	*/	1953	*/
		1954	void
1959	void unflag_inv(object*op, int flag){	1955	unflag_inv (object *op, int flag)
1960	object *tmp;	1956	{
1961	if(op->inv)	1957	if (op->inv)
1962	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1958	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1959	{
1963	CLEAR_FLAG(tmp, flag);	1960	CLEAR_FLAG (tmp, flag);
1964	unflag_inv(tmp,flag);	1961	unflag_inv (tmp, flag);
1965	}	1962	}
1966	}	1963	}
1967		1964
1968	/*	1965	/*
1969	* 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
1970	* all it's inventory (recursively).	1967	* all it's inventory (recursively).
1971	* 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
1972	* 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.
1973	*/	1970	*/
1974		1971	void
1975	void set_cheat(object *op) {	1972	set_cheat (object *op)
		1973	{
1976	SET_FLAG(op, FLAG_WAS_WIZ);	1974	SET_FLAG (op, FLAG_WAS_WIZ);
1977	flag_inv(op, FLAG_WAS_WIZ);	1975	flag_inv (op, FLAG_WAS_WIZ);
1978	}	1976	}
1979		1977
1980	/*	1978	/*
1981	* 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
1982	* 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
…		…
1996	* 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
1997	* 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
1998	* 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
1999	* customized, changed states, etc.	1997	* customized, changed states, etc.
2000	*/	1998	*/
2001		1999	int
2002	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	{
2003	int i,index=0, flag;	2002	int index = 0, flag;
2004	static int altern[SIZEOFFREE];	2003	int altern[SIZEOFFREE];
2005		2004
2006	for(i=start;i<stop;i++) {	2005	for (int i = start; i < stop; i++)
		2006	{
2007	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]);
2008	if(!flag)	2008	if (!flag)
2009	altern[index++]=i;	2009	altern [index++] = i;
2010		2010
2011	/* 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.
2012	* 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.
2013	* 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 -
2014	* 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
2015	* 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
2016	* to only the spaces immediately surrounding the target area, and	2016	* to only the spaces immediately surrounding the target area, and
2017	* won't look 2 spaces south of the target space.	2017	* won't look 2 spaces south of the target space.
2018	*/	2018	*/
2019	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2019	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2020	stop=maxfree[i];	2020	stop = maxfree[i];
2021	}	2021	}
2022	if(!index) return -1;	2022
		2023	if (!index)
		2024	return -1;
		2025
2023	return altern[RANDOM()%index];	2026	return altern[RANDOM () % index];
2024	}	2027	}
2025		2028
2026	/*	2029	/*
2027	* find_first_free_spot(archetype, mapstruct, x, y) works like	2030	* find_first_free_spot(archetype, maptile, x, y) works like
2028	* find_free_spot(), but it will search max number of squares.	2031	* find_free_spot(), but it will search max number of squares.
2029	* 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.
2030	* 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.
2031	*/	2034	*/
2032		2035	int
2033	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)
2034	int i;	2037	{
2035	for(i=0;i<SIZEOFFREE;i++) {	2038	for (int i = 0; i < SIZEOFFREE; i++)
2036	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]))
2037	return i;	2040	return i;
2038	}	2041
2039	return -1;	2042	return -1;
2040	}	2043	}
2041		2044
2042	/*	2045	/*
2043	* The function permute(arr, begin, end) randomly reorders the array	2046	* The function permute(arr, begin, end) randomly reorders the array
2044	* arr[begin..end-1].	2047	* arr[begin..end-1].
		2048	* now uses a fisher-yates shuffle, old permute was broken
2045	*/	2049	*/
		2050	static void
2046	static void permute(int *arr, int begin, int end)	2051	permute (int *arr, int begin, int end)
2047	{	2052	{
2048	int i, j, tmp, len;	2053	arr += begin;
		2054	end -= begin;
2049		2055
2050	len = end-begin;	2056	while (--end)
2051	for(i = begin; i < end; i++)	2057	swap (arr [end], arr [RANDOM () % (end + 1)]);
2052	{
2053	j = begin+RANDOM()%len;
2054
2055	tmp = arr[i];
2056	arr[i] = arr[j];
2057	arr[j] = tmp;
2058	}
2059	}	2058	}
2060		2059
2061	/* new function to make monster searching more efficient, and effective!	2060	/* new function to make monster searching more efficient, and effective!
2062	* This basically returns a randomized array (in the passed pointer) of	2061	* This basically returns a randomized array (in the passed pointer) of
2063	* the spaces to find monsters. In this way, it won't always look for	2062	* the spaces to find monsters. In this way, it won't always look for
2064	* monsters to the north first. However, the size of the array passed	2063	* monsters to the north first. However, the size of the array passed
2065	* covers all the spaces, so within that size, all the spaces within	2064	* covers all the spaces, so within that size, all the spaces within
2066	* the 3x3 area will be searched, just not in a predictable order.	2065	* the 3x3 area will be searched, just not in a predictable order.
2067	*/	2066	*/
		2067	void
2068	void get_search_arr(int *search_arr)	2068	get_search_arr (int *search_arr)
2069	{	2069	{
2070	int i;	2070	int i;
2071		2071
2072	for(i = 0; i < SIZEOFFREE; i++)	2072	for (i = 0; i < SIZEOFFREE; i++)
2073	{
2074	search_arr[i] = i;	2073	search_arr[i] = i;
2075	}
2076		2074
2077	permute(search_arr, 1, SIZEOFFREE1+1);	2075	permute (search_arr, 1, SIZEOFFREE1 + 1);
2078	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2076	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2079	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2077	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2080	}	2078	}
2081		2079
2082	/*	2080	/*
2083	* 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
2084	* given map at the given coordinates for live objects.	2082	* given map at the given coordinates for live objects.
…		…
2089	* Perhaps incorrectly, but I'm making the assumption that exclude	2087	* Perhaps incorrectly, but I'm making the assumption that exclude
2090	* is actually want is going to try and move there. We need this info	2088	* is actually want is going to try and move there. We need this info
2091	* because we have to know what movement the thing looking to move	2089	* because we have to know what movement the thing looking to move
2092	* there is capable of.	2090	* there is capable of.
2093	*/	2091	*/
2094		2092	int
2095	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2093	find_dir (maptile *m, int x, int y, object *exclude)
		2094	{
2096	int i,max=SIZEOFFREE, mflags;	2095	int i, max = SIZEOFFREE, mflags;
		2096
2097	sint16 nx, ny;	2097	sint16 nx, ny;
2098	object *tmp;	2098	object *tmp;
2099	mapstruct *mp;	2099	maptile *mp;
		2100
2100	MoveType blocked, move_type;	2101	MoveType blocked, move_type;
2101		2102
2102	if (exclude && exclude->head) {	2103	if (exclude && exclude->head)
		2104	{
2103	exclude = exclude->head;	2105	exclude = exclude->head;
2104	move_type = exclude->move_type;	2106	move_type = exclude->move_type;
2105	} else {	2107	}
		2108	else
		2109	{
2106	/* 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. */
2107	move_type=MOVE_ALL;	2111	move_type = MOVE_ALL;
		2112	}
		2113
		2114	for (i = 1; i < max; i++)
2108	}	2115	{
2109
2110	for(i=1;i<max;i++) {
2111	mp = m;	2116	mp = m;
2112	nx = x + freearr_x[i];	2117	nx = x + freearr_x[i];
2113	ny = y + freearr_y[i];	2118	ny = y + freearr_y[i];
2114		2119
2115	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2120	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2121
2116	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)
2117	max = maxfree[i];	2131	max = maxfree[i];
2118	} else {
2119	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2120
2121	if ((move_type & blocked) == move_type) {
2122	max=maxfree[i];
2123	} else if (mflags & P_IS_ALIVE) {	2132	else if (mflags & P_IS_ALIVE)
2124	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2133	{
		2134	for (tmp = ms.bot; tmp; tmp = tmp->above)
2125	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2135	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2126	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2136	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2127	break;	2137	break;
2128	}	2138
2129	}
2130	if(tmp) {	2139	if (tmp)
2131	return freedir[i];	2140	return freedir[i];
2132	}
2133	}	2141	}
2134	}	2142	}
2135	}	2143	}
		2144
2136	return 0;	2145	return 0;
2137	}	2146	}
2138		2147
2139	/*	2148	/*
2140	* distance(object 1, object 2) will return the square of the	2149	* distance(object 1, object 2) will return the square of the
2141	* distance between the two given objects.	2150	* distance between the two given objects.
2142	*/	2151	*/
2143		2152	int
2144	int distance(const object *ob1, const object *ob2) {	2153	distance (const object *ob1, const object *ob2)
2145	int i;	2154	{
2146	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);
2147	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2148	return i;
2149	}	2156	}
2150		2157
2151	/*	2158	/*
2152	* 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
2153	* 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
2154	* object, needs to travel toward it.	2161	* object, needs to travel toward it.
2155	*/	2162	*/
2156		2163	int
2157	int find_dir_2(int x, int y) {	2164	find_dir_2 (int x, int y)
		2165	{
2158	int q;	2166	int q;
2159		2167
2160	if(y)	2168	if (y)
2161	q=x*100/y;	2169	q = x * 100 / y;
2162	else if (x)	2170	else if (x)
2163	q= -300*x;	2171	q = -300 * x;
2164	else	2172	else
2165	return 0;	2173	return 0;
2166		2174
2167	if(y>0) {	2175	if (y > 0)
		2176	{
2168	if(q < -242)	2177	if (q < -242)
2169	return 3 ;	2178	return 3;
2170	if (q < -41)	2179	if (q < -41)
2171	return 2 ;	2180	return 2;
2172	if (q < 41)	2181	if (q < 41)
2173	return 1 ;	2182	return 1;
2174	if (q < 242)	2183	if (q < 242)
2175	return 8 ;	2184	return 8;
2176	return 7 ;	2185	return 7;
2177	}	2186	}
2178		2187
2179	if (q < -242)	2188	if (q < -242)
2180	return 7 ;	2189	return 7;
2181	if (q < -41)	2190	if (q < -41)
2182	return 6 ;	2191	return 6;
2183	if (q < 41)	2192	if (q < 41)
2184	return 5 ;	2193	return 5;
2185	if (q < 242)	2194	if (q < 242)
2186	return 4 ;	2195	return 4;
2187		2196
2188	return 3 ;	2197	return 3;
2189	}	2198	}
2190		2199
2191	/*	2200	/*
2192	* absdir(int): Returns a number between 1 and 8, which represent	2201	* absdir(int): Returns a number between 1 and 8, which represent
2193	* the "absolute" direction of a number (it actually takes care of	2202	* the "absolute" direction of a number (it actually takes care of
2194	* "overflow" in previous calculations of a direction).	2203	* "overflow" in previous calculations of a direction).
2195	*/	2204	*/
2196		2205
		2206	int
2197	int absdir(int d) {	2207	absdir (int d)
2198	while(d<1) d+=8;	2208	{
2199	while(d>8) d-=8;	2209	while (d < 1)
		2210	d += 8;
		2211
		2212	while (d > 8)
		2213	d -= 8;
		2214
2200	return d;	2215	return d;
2201	}	2216	}
2202		2217
2203	/*	2218	/*
2204	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2219	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2205	* between two directions (which are expected to be absolute (see absdir())	2220	* between two directions (which are expected to be absolute (see absdir())
2206	*/	2221	*/
2207		2222
		2223	int
2208	int dirdiff(int dir1, int dir2) {	2224	dirdiff (int dir1, int dir2)
		2225	{
2209	int d;	2226	int d;
		2227
2210	d = abs(dir1 - dir2);	2228	d = abs (dir1 - dir2);
2211	if(d>4)	2229	if (d > 4)
2212	d = 8 - d;	2230	d = 8 - d;
		2231
2213	return d;	2232	return d;
2214	}	2233	}
2215		2234
2216	/* peterm:	2235	/* peterm:
2217	* 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.
…		…
2220	* 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
2221	* 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.
2222	* 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
2223	* functions.	2242	* functions.
2224	*/	2243	*/
2225
2226	int reduction_dir[SIZEOFFREE][3] = {	2244	int reduction_dir[SIZEOFFREE][3] = {
2227	{0,0,0}, /* 0 */	2245	{0, 0, 0}, /* 0 */
2228	{0,0,0}, /* 1 */	2246	{0, 0, 0}, /* 1 */
2229	{0,0,0}, /* 2 */	2247	{0, 0, 0}, /* 2 */
2230	{0,0,0}, /* 3 */	2248	{0, 0, 0}, /* 3 */
2231	{0,0,0}, /* 4 */	2249	{0, 0, 0}, /* 4 */
2232	{0,0,0}, /* 5 */	2250	{0, 0, 0}, /* 5 */
2233	{0,0,0}, /* 6 */	2251	{0, 0, 0}, /* 6 */
2234	{0,0,0}, /* 7 */	2252	{0, 0, 0}, /* 7 */
2235	{0,0,0}, /* 8 */	2253	{0, 0, 0}, /* 8 */
2236	{8,1,2}, /* 9 */	2254	{8, 1, 2}, /* 9 */
2237	{1,2,-1}, /* 10 */	2255	{1, 2, -1}, /* 10 */
2238	{2,10,12}, /* 11 */	2256	{2, 10, 12}, /* 11 */
2239	{2,3,-1}, /* 12 */	2257	{2, 3, -1}, /* 12 */
2240	{2,3,4}, /* 13 */	2258	{2, 3, 4}, /* 13 */
2241	{3,4,-1}, /* 14 */	2259	{3, 4, -1}, /* 14 */
2242	{4,14,16}, /* 15 */	2260	{4, 14, 16}, /* 15 */
2243	{5,4,-1}, /* 16 */	2261	{5, 4, -1}, /* 16 */
2244	{4,5,6}, /* 17 */	2262	{4, 5, 6}, /* 17 */
2245	{6,5,-1}, /* 18 */	2263	{6, 5, -1}, /* 18 */
2246	{6,20,18}, /* 19 */	2264	{6, 20, 18}, /* 19 */
2247	{7,6,-1}, /* 20 */	2265	{7, 6, -1}, /* 20 */
2248	{6,7,8}, /* 21 */	2266	{6, 7, 8}, /* 21 */
2249	{7,8,-1}, /* 22 */	2267	{7, 8, -1}, /* 22 */
2250	{8,22,24}, /* 23 */	2268	{8, 22, 24}, /* 23 */
2251	{8,1,-1}, /* 24 */	2269	{8, 1, -1}, /* 24 */
2252	{24,9,10}, /* 25 */	2270	{24, 9, 10}, /* 25 */
2253	{9,10,-1}, /* 26 */	2271	{9, 10, -1}, /* 26 */
2254	{10,11,-1}, /* 27 */	2272	{10, 11, -1}, /* 27 */
2255	{27,11,29}, /* 28 */	2273	{27, 11, 29}, /* 28 */
2256	{11,12,-1}, /* 29 */	2274	{11, 12, -1}, /* 29 */
2257	{12,13,-1}, /* 30 */	2275	{12, 13, -1}, /* 30 */
2258	{12,13,14}, /* 31 */	2276	{12, 13, 14}, /* 31 */
2259	{13,14,-1}, /* 32 */	2277	{13, 14, -1}, /* 32 */
2260	{14,15,-1}, /* 33 */	2278	{14, 15, -1}, /* 33 */
2261	{33,15,35}, /* 34 */	2279	{33, 15, 35}, /* 34 */
2262	{16,15,-1}, /* 35 */	2280	{16, 15, -1}, /* 35 */
2263	{17,16,-1}, /* 36 */	2281	{17, 16, -1}, /* 36 */
2264	{18,17,16}, /* 37 */	2282	{18, 17, 16}, /* 37 */
2265	{18,17,-1}, /* 38 */	2283	{18, 17, -1}, /* 38 */
2266	{18,19,-1}, /* 39 */	2284	{18, 19, -1}, /* 39 */
2267	{41,19,39}, /* 40 */	2285	{41, 19, 39}, /* 40 */
2268	{19,20,-1}, /* 41 */	2286	{19, 20, -1}, /* 41 */
2269	{20,21,-1}, /* 42 */	2287	{20, 21, -1}, /* 42 */
2270	{20,21,22}, /* 43 */	2288	{20, 21, 22}, /* 43 */
2271	{21,22,-1}, /* 44 */	2289	{21, 22, -1}, /* 44 */
2272	{23,22,-1}, /* 45 */	2290	{23, 22, -1}, /* 45 */
2273	{45,47,23}, /* 46 */	2291	{45, 47, 23}, /* 46 */
2274	{23,24,-1}, /* 47 */	2292	{23, 24, -1}, /* 47 */
2275	{24,9,-1}}; /* 48 */	2293	{24, 9, -1}
		2294	}; /* 48 */
2276		2295
2277	/* Recursive routine to step back and see if we can	2296	/* Recursive routine to step back and see if we can
2278	* find a path to that monster that we found. If not,	2297	* find a path to that monster that we found. If not,
2279	* we don't bother going toward it. Returns 1 if we	2298	* we don't bother going toward it. Returns 1 if we
2280	* can see a direct way to get it	2299	* can see a direct way to get it
2281	* Modified to be map tile aware -.MSW	2300	* Modified to be map tile aware -.MSW
2282	*/	2301	*/
2283		2302	int
2284
2285	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	{
2286	sint16 dx, dy;	2305	sint16 dx, dy;
2287	int mflags;	2306	int mflags;
2288		2307
		2308	if (dir < 0)
2289	if(dir<0) return 0; /* exit condition: invalid direction */	2309	return 0; /* exit condition: invalid direction */
2290		2310
2291	dx = x + freearr_x[dir];	2311	dx = x + freearr_x[dir];
2292	dy = y + freearr_y[dir];	2312	dy = y + freearr_y[dir];
2293		2313
2294	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2314	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2295		2315
2296	/* This functional arguably was incorrect before - it was	2316	/* This functional arguably was incorrect before - it was
2297	* checking for P_WALL - that was basically seeing if	2317	* checking for P_WALL - that was basically seeing if
2298	* we could move to the monster - this is being more	2318	* we could move to the monster - this is being more
2299	* 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
2300	* 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
2301	* at least its move type.	2321	* at least its move type.
2302	*/	2322	*/
2303	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2323	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2324	return 0;
2304		2325
2305	/* yes, can see. */	2326	/* yes, can see. */
2306	if(dir < 9) return 1;	2327	if (dir < 9)
		2328	return 1;
		2329
2307	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2330	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2308	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2331	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2309	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2332	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2310	}	2333	}
2311		2334
2312
2313
2314	/*	2335	/*
2315	* 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
2316	* picked up by the picker. Returnes 1 if it can be	2337	* picked up by the picker. Returnes 1 if it can be
2317	* picked up, otherwise 0.	2338	* picked up, otherwise 0.
2318	*	2339	*
…		…
2320	* core dumps if they do.	2341	* core dumps if they do.
2321	*	2342	*
2322	* 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)
2323	*/	2344	*/
2324		2345
		2346	int
2325	int can_pick(const object *who, const object *item) {	2347	can_pick (const object *who, const object *item)
		2348	{
2326	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2349	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2327	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2350	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2328	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2351	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2329	(who->type==PLAYER||item->weight<who->weight/3));
2330	}	2352	}
2331
2332		2353
2333	/*	2354	/*
2334	* create clone from object to another	2355	* create clone from object to another
2335	*/	2356	*/
		2357	object *
2336	object *object_create_clone (object *asrc) {	2358	object_create_clone (object *asrc)
		2359	{
2337	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2360	object *dst = 0, *tmp, *src, *part, *prev, *item;
2338		2361
2339	if(!asrc) return NULL;	2362	if (!asrc)
		2363	return 0;
		2364
2340	src = asrc;	2365	src = asrc;
2341	if(src->head)	2366	if (src->head)
2342	src = src->head;	2367	src = src->head;
2343		2368
2344	prev = NULL;	2369	prev = 0;
2345	for(part = src; part; part = part->more) {	2370	for (part = src; part; part = part->more)
2346	tmp = get_object();	2371	{
2347	copy_object(part,tmp);	2372	tmp = part->clone ();
2348	tmp->x -= src->x;	2373	tmp->x -= src->x;
2349	tmp->y -= src->y;	2374	tmp->y -= src->y;
		2375
2350	if(!part->head) {	2376	if (!part->head)
		2377	{
2351	dst = tmp;	2378	dst = tmp;
2352	tmp->head = NULL;	2379	tmp->head = 0;
		2380	}
2353	} else {	2381	else
2354	tmp->head = dst;	2382	tmp->head = dst;
2355	}	2383
2356	tmp->more = NULL;	2384	tmp->more = 0;
		2385
2357	if(prev)	2386	if (prev)
2358	prev->more = tmp;	2387	prev->more = tmp;
		2388
2359	prev = tmp;	2389	prev = tmp;
2360	}	2390	}
2361	/*** copy inventory ***/	2391
2362	for(item = src->inv; item; item = item->below) {	2392	for (item = src->inv; item; item = item->below)
2363	(void) insert_ob_in_ob(object_create_clone(item),dst);	2393	insert_ob_in_ob (object_create_clone (item), dst);
2364	}
2365		2394
2366	return dst;	2395	return dst;
2367	}
2368
2369	/* return true if the object was destroyed, 0 otherwise */
2370	int was_destroyed (const object *op, tag_t old_tag)
2371	{
2372	/* checking for FLAG_FREED isn't necessary, but makes this function more
2373	* robust */
2374	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2375	}	2396	}
2376		2397
2377	/* GROS - Creates an object using a string representing its content. */	2398	/* GROS - Creates an object using a string representing its content. */
2378	/* Basically, we save the content of the string to a temp file, then call */	2399	/* Basically, we save the content of the string to a temp file, then call */
2379	/* load_object on it. I admit it is a highly inefficient way to make things, */	2400	/* load_object on it. I admit it is a highly inefficient way to make things, */
2380	/* but it was simple to make and allows reusing the load_object function. */	2401	/* but it was simple to make and allows reusing the load_object function. */
2381	/* Remember not to use load_object_str in a time-critical situation. */	2402	/* Remember not to use load_object_str in a time-critical situation. */
2382	/* Also remember that multiparts objects are not supported for now. */	2403	/* Also remember that multiparts objects are not supported for now. */
2383		2404	object *
2384	object* load_object_str(const char *obstr)	2405	load_object_str (const char *obstr)
2385	{	2406	{
2386	object *op;	2407	object *op;
2387	char filename[MAX_BUF];	2408	char filename[MAX_BUF];
		2409
2388	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2410	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2389		2411
2390	FILE *tempfile=fopen(filename,"w");	2412	FILE *tempfile = fopen (filename, "w");
		2413
2391	if (tempfile == NULL)	2414	if (tempfile == NULL)
2392	{	2415	{
2393	LOG(llevError,"Error - Unable to access load object temp file\n");	2416	LOG (llevError, "Error - Unable to access load object temp file\n");
2394	return NULL;	2417	return NULL;
2395	};	2418	}
		2419
2396	fprintf(tempfile,obstr);	2420	fprintf (tempfile, obstr);
2397	fclose(tempfile);	2421	fclose (tempfile);
2398		2422
2399	op=get_object();	2423	op = object::create ();
2400		2424
2401	object_thawer thawer (filename);	2425	object_thawer thawer (filename);
2402		2426
2403	if (thawer)	2427	if (thawer)
2404	load_object(thawer,op,0);	2428	load_object (thawer, op, 0);
2405		2429
2406	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2430	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2407	CLEAR_FLAG(op,FLAG_REMOVED);	2431	CLEAR_FLAG (op, FLAG_REMOVED);
2408		2432
2409	return op;	2433	return op;
2410	}	2434	}
2411		2435
2412	/* This returns the first object in who's inventory that	2436	/* This returns the first object in who's inventory that
2413	* has the same type and subtype match.	2437	* has the same type and subtype match.
2414	* returns NULL if no match.	2438	* returns NULL if no match.
2415	*/	2439	*/
		2440	object *
2416	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)
2417	{	2442	{
2418	object *tmp;
2419
2420	for (tmp=who->inv; tmp; tmp=tmp->below)	2443	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2421	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2444	if (tmp->type == type && tmp->subtype == subtype)
		2445	return tmp;
2422		2446
2423	return NULL;	2447	return 0;
2424	}	2448	}
2425		2449
2426	/* 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,
2427	* otherwise return NULL.	2451	* otherwise return NULL.
2428	*	2452	*
2429	* 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
2430	* do the desired thing.	2454	* do the desired thing.
2431	*/	2455	*/
		2456	key_value *
2432	key_value * get_ob_key_link(const object * ob, const char * key) {	2457	get_ob_key_link (const object *ob, const char *key)
2433	key_value * link;	2458	{
2434
2435	for (link = ob->key_values; link != NULL; link = link->next) {	2459	for (key_value *link = ob->key_values; link; link = link->next)
2436	if (link->key == key) {	2460	if (link->key == key)
2437	return link;	2461	return link;
2438	}	2462
2439	}	2463	return 0;
2440		2464	}
2441	return NULL;
2442	}
2443		2465
2444	/*	2466	/*
2445	* 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.
2446	*	2468	*
2447	* The argument doesn't need to be a shared string.	2469	* The argument doesn't need to be a shared string.
2448	*	2470	*
2449	* The returned string is shared.	2471	* The returned string is shared.
2450	*/	2472	*/
		2473	const char *
2451	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	{
2452	key_value * link;	2476	key_value *link;
2453	const char * canonical_key;	2477	shstr_cmp canonical_key (key);
		2478
		2479	if (!canonical_key)
2454		2480	{
2455	canonical_key = shstr::find (key);
2456
2457	if (canonical_key == NULL) {
2458	/* 1. There being a field named key on any object	2481	/* 1. There being a field named key on any object
2459	* implies there'd be a shared string to find.	2482	* implies there'd be a shared string to find.
2460	* 2. Since there isn't, no object has this field.	2483	* 2. Since there isn't, no object has this field.
2461	* 3. Therefore, *this* object doesn't have this field.	2484	* 3. Therefore, *this* object doesn't have this field.
2462	*/	2485	*/
2463	return NULL;	2486	return 0;
2464	}	2487	}
2465		2488
2466	/* This is copied from get_ob_key_link() above -	2489	/* This is copied from get_ob_key_link() above -
2467	* only 4 lines, and saves the function call overhead.	2490	* only 4 lines, and saves the function call overhead.
2468	*/	2491	*/
2469	for (link = op->key_values; link != NULL; link = link->next) {	2492	for (link = op->key_values; link; link = link->next)
2470	if (link->key == canonical_key) {	2493	if (link->key == canonical_key)
2471	return link->value;	2494	return link->value;
2472	}	2495
2473	}	2496	return 0;
2474	return NULL;
2475	}	2497	}
2476		2498
2477		2499
2478	/*	2500	/*
2479	* Updates the canonical_key in op to value.	2501	* Updates the canonical_key in op to value.
…		…
2483	* 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
2484	* keys.	2506	* keys.
2485	*	2507	*
2486	* Returns TRUE on success.	2508	* Returns TRUE on success.
2487	*/	2509	*/
		2510	int
2488	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	{
2489	key_value * field = NULL, *last=NULL;	2513	key_value *field = NULL, *last = NULL;
2490		2514
2491	for (field=op->key_values; field != NULL; field=field->next) {	2515	for (field = op->key_values; field != NULL; field = field->next)
		2516	{
2492	if (field->key != canonical_key) {	2517	if (field->key != canonical_key)
		2518	{
2493	last = field;	2519	last = field;
2494	continue;	2520	continue;
2495	}	2521	}
2496		2522
2497	if (value)	2523	if (value)
2498	field->value = value;	2524	field->value = value;
2499	else {	2525	else
		2526	{
2500	/* Basically, if the archetype has this key set,	2527	/* Basically, if the archetype has this key set,
2501	* we need to store the null value so when we save	2528	* we need to store the null value so when we save
2502	* it, we save the empty value so that when we load,	2529	* it, we save the empty value so that when we load,
2503	* we get this value back again.	2530	* we get this value back again.
2504	*/	2531	*/
2505	if (get_ob_key_link (&op->arch->clone, canonical_key))	2532	if (get_ob_key_link (&op->arch->clone, canonical_key))
2506	field->value = 0;	2533	field->value = 0;
		2534	else
		2535	{
		2536	if (last)
		2537	last->next = field->next;
2507	else	2538	else
2508	{
2509	if (last) last->next = field->next;
2510	else op->key_values = field->next;	2539	op->key_values = field->next;
2511		2540
2512	delete field;	2541	delete field;
2513	}	2542	}
2514	}	2543	}
2515	return TRUE;	2544	return TRUE;
2516	}	2545	}
2517	/* IF we get here, key doesn't exist */	2546	/* IF we get here, key doesn't exist */
2518		2547
2519	/* No field, we'll have to add it. */	2548	/* No field, we'll have to add it. */
2520		2549
2521	if (!add_key) {	2550	if (!add_key)
2522	return FALSE;	2551	return FALSE;
2523	}	2552
2524	/* There isn't any good reason to store a null	2553	/* There isn't any good reason to store a null
2525	* value in the key/value list. If the archetype has	2554	* value in the key/value list. If the archetype has
2526	* this key, then we should also have it, so shouldn't	2555	* this key, then we should also have it, so shouldn't
2527	* be here. If user wants to store empty strings,	2556	* be here. If user wants to store empty strings,
2528	* should pass in ""	2557	* should pass in ""
2529	*/	2558	*/
2530	if (value == NULL) return TRUE;	2559	if (value == NULL)
2531
2532	field = new key_value;
2533
2534	field->key = canonical_key;
2535	field->value = value;
2536	/* Usual prepend-addition. */
2537	field->next = op->key_values;
2538	op->key_values = field;
2539
2540	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;
2541	}	2571	}
2542		2572
2543	/*	2573	/*
2544	* Updates the key in op to value.	2574	* Updates the key in op to value.
2545	*	2575	*
…		…
2547	* and not add new ones.	2577	* and not add new ones.
2548	* 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
2549	*	2579	*
2550	* Returns TRUE on success.	2580	* Returns TRUE on success.
2551	*/	2581	*/
		2582	int
2552	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)
2553	{	2584	{
2554	shstr key_ (key);	2585	shstr key_ (key);
		2586
2555	return set_ob_key_value_s (op, key_, value, add_key);	2587	return set_ob_key_value_s (op, key_, value, add_key);
2556	}	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 * 4];
		2668	return debug_desc (info);
		2669	}
		2670

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