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Comparing deliantra/server/common/object.C (file contents):
Revision 1.23 by root, Sun Sep 10 14:54:02 2006 UTC vs.
Revision 1.101 by root, Mon Jan 1 17:30:33 2007 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.23 2006/09/10 14:54:02 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	};
		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	}
59		133
60	/* 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
61	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	{
62	key_value * wants_field;	138	key_value *wants_field;
63		139
64	/* 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
65	* 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
66	* different structure or at least keep the lists sorted...	142	* different structure or at least keep the lists sorted...
67	*/	143	*/
68		144
69	/* For each field in wants, */	145	/* For each field in wants, */
70	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	{
71	key_value * has_field;	148	key_value *has_field;
72		149
73	/* Look for a field in has with the same key. */	150	/* Look for a field in has with the same key. */
74	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)
75		154	{
76	if (has_field == NULL) {
77	/* No field with that name. */	155	/* No field with that name. */
78	return FALSE;	156	return FALSE;
79	}
80		157	}
		158
81	/* Found the matching field. */	159	/* Found the matching field. */
82	if (has_field->value != wants_field->value) {	160	if (has_field->value != wants_field->value)
		161	{
83	/* 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. */
84	return FALSE;	163	return FALSE;
85	}	164	}
86		165
87	/* 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. */
88	}
89		167	}
		168
90	/* 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. */
91	return TRUE;	170	return TRUE;
92	}	171	}
93		172
94	/* 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
95	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	175	compare_ob_value_lists (const object *ob1, const object *ob2)
		176	{
96	/* 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,
97	* so we need to run the comparison *twice*. :(	178	* so we need to run the comparison *twice*. :(
98	*/	179	*/
99	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);
100	}	181	}
101		182
102	/* 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
103	* they can be merged together.	184	* they can be merged together.
104	*	185	*
105	* 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
106	* replaces - this is mostly for clarity - a decent compiler should hopefully	187	* replaces - this is mostly for clarity - a decent compiler should hopefully
107	* reduce this to the same efficiency.	188	* reduce this to the same efficiency.
108	*	189	*
109	* Check nrof variable *before* calling CAN_MERGE()	190	* Check nrof variable *before* calling can_merge()
110	*	191	*
111	* Improvements made with merge: Better checking on potion, and also	192	* Improvements made with merge: Better checking on potion, and also
112	* check weight	193	* check weight
113	*/	194	*/
114
115	bool
116	object::can_merge (object *ob1, object *ob2)	195	bool object::can_merge_slow (object *ob1, object *ob2)
117	{	196	{
118	/* A couple quicksanity checks */	197	/* A couple quicksanity checks */
119	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)
120	return 0;	203	return 0;
121		204
122	if (ob1->speed != ob2->speed)	205	//TODO: this ain't working well, use nicer and correct overflow check
123	return 0;
124
125	/* 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
126	* 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
127	* used to store nrof).	208	* used to store nrof).
128	*/	209	*/
129	if (ob1->nrof + ob2->nrof >= 1UL << 31)	210	if (ob1->nrof + ob2->nrof >= 1UL << 31)
…		…
139	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	220	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
140		221
141	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	222	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
142	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	223	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
143		224
144		225	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
145	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something	226	|| ob1->arch != ob2->arch
146	* being locked in inventory should prevent merging.
147	* 0x4 in flags3 is CLIENT_SENT
148	*/
149	if ((ob1->arch != ob2->arch) ||
150	(ob1->flags[0] != ob2->flags[0]) ||
151	(ob1->flags[1] != ob2->flags[1]) ||
152	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
153	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
154	(ob1->name != ob2->name) ||	227	|| ob1->name != ob2->name
155	(ob1->title != ob2->title) ||	228	|| ob1->title != ob2->title
156	(ob1->msg != ob2->msg) ||	229	|| ob1->msg != ob2->msg
157	(ob1->weight != ob2->weight) ||	230	|| ob1->weight != ob2->weight
158	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||	231	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
159	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||	232	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
160	(ob1->attacktype != ob2->attacktype) ||	233	|| ob1->attacktype != ob2->attacktype
161	(ob1->magic != ob2->magic) ||	234	|| ob1->magic != ob2->magic
162	(ob1->slaying != ob2->slaying) ||	235	|| ob1->slaying != ob2->slaying
163	(ob1->skill != ob2->skill) ||	236	|| ob1->skill != ob2->skill
164	(ob1->value != ob2->value) ||	237	|| ob1->value != ob2->value
165	(ob1->animation_id != ob2->animation_id) ||	238	|| ob1->animation_id != ob2->animation_id
166	(ob1->client_type != ob2->client_type) ||	239	|| ob1->client_type != ob2->client_type
167	(ob1->materialname != ob2->materialname) ||	240	|| ob1->materialname != ob2->materialname
168	(ob1->lore != ob2->lore) ||	241	|| ob1->lore != ob2->lore
169	(ob1->subtype != ob2->subtype) ||	242	|| ob1->subtype != ob2->subtype
170	(ob1->move_type != ob2->move_type) ||	243	|| ob1->move_type != ob2->move_type
171	(ob1->move_block != ob2->move_block) ||	244	|| ob1->move_block != ob2->move_block
172	(ob1->move_allow != ob2->move_allow) ||	245	|| ob1->move_allow != ob2->move_allow
173	(ob1->move_on != ob2->move_on) ||	246	|| ob1->move_on != ob2->move_on
174	(ob1->move_off != ob2->move_off) ||	247	|| ob1->move_off != ob2->move_off
175	(ob1->move_slow != ob2->move_slow) ||	248	|| ob1->move_slow != ob2->move_slow
176	(ob1->move_slow_penalty != ob2->move_slow_penalty))	249	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
177	return 0;	250	return 0;
178		251
179	/* This is really a spellbook check - really, we should	252	/* This is really a spellbook check - really, we should
180	* check all objects in the inventory.	253	* check all objects in the inventory.
181	*/	254	*/
182	if (ob1->inv || ob2->inv)	255	if (ob1->inv || ob2->inv)
183	{	256	{
184	/* 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 */
185	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))	258	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
186	return 0;	259	return 0;
187		260
188	/* Now check to see if the two inventory objects could merge */	261	/* Now check to see if the two inventory objects could merge */
189	if (!CAN_MERGE (ob1->inv, ob2->inv))	262	if (!object::can_merge (ob1->inv, ob2->inv))
190	return 0;	263	return 0;
191		264
192	/* 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
193	* if it is valid.	266	* if it is valid.
194	*/	267	*/
195	}	268	}
…		…
203		276
204	/* 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
205	* 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
206	* check?	279	* check?
207	*/	280	*/
208	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	281	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
209	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
210	return 0;	282	return 0;
211		283
212	switch (ob1->type)	284	switch (ob1->type)
213	{	285	{
214	case SCROLL:	286	case SCROLL:
215	if (ob1->level != ob2->level)	287	if (ob1->level != ob2->level)
216	return 0;	288	return 0;
217	break;	289	break;
218	}	290	}
219		291
220	if (ob1->key_values != NULL || ob2->key_values != NULL)	292	if (ob1->key_values != NULL || ob2->key_values != NULL)
221	{	293	{
222	/* At least one of these has key_values. */	294	/* At least one of these has key_values. */
223	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	295	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
224	/* One has fields, but the other one doesn't. */	296	/* One has fields, but the other one doesn't. */
225	return 0;	297	return 0;
226	else if (!compare_ob_value_lists (ob1, ob2))	298	else if (!compare_ob_value_lists (ob1, ob2))
227	return 0;	299	return 0;
228	}	300	}
229		301
230	//TODO: generate an event or call into perl for additional checks	302	//TODO: generate an event or call into perl for additional checks
231	if (ob1->self || ob2->self)	303	if (ob1->self || ob2->self)
232	{	304	{
233	ob1->optimise ();	305	ob1->optimise ();
234	ob2->optimise ();	306	ob2->optimise ();
235		307
236	if (ob1->self || ob2->self)	308	if (ob1->self || ob2->self)
237	return 0;	309	return 0;
238	}	310	}
239		311
240	/* Everything passes, must be OK. */	312	/* Everything passes, must be OK. */
241	return 1;	313	return 1;
242	}	314	}
		315
243	/*	316	/*
244	* sum_weight() is a recursive function which calculates the weight	317	* sum_weight() is a recursive function which calculates the weight
245	* 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
246	* containers are carrying, and sums it up.	319	* containers are carrying, and sums it up.
247	*/	320	*/
248	signed long sum_weight(object *op) {	321	long
		322	sum_weight (object *op)
		323	{
249	signed long sum;	324	long sum;
250	object *inv;	325	object *inv;
		326
251	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	327	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		328	{
252	if (inv->inv)	329	if (inv->inv)
253	sum_weight(inv);	330	sum_weight (inv);
254	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	331	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
255	}	332	}
		333
256	if (op->type == CONTAINER && op->stats.Str)	334	if (op->type == CONTAINER && op->stats.Str)
257	sum = (sum * (100 - op->stats.Str))/100;	335	sum = (sum * (100 - op->stats.Str)) / 100;
		336
258	if(op->carrying != sum)	337	if (op->carrying != sum)
259	op->carrying = sum;	338	op->carrying = sum;
		339
260	return sum;	340	return sum;
261	}	341	}
262		342
263	/**	343	/**
264	* Return the outermost environment object for a given object.	344	* Return the outermost environment object for a given object.
265	*/	345	*/
266		346
		347	object *
267	object *object_get_env_recursive (object *op) {	348	object_get_env_recursive (object *op)
		349	{
268	while (op->env != NULL)	350	while (op->env != NULL)
269	op = op->env;	351	op = op->env;
270	return op;	352	return op;
271	}
272
273	/*
274	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
275	* a better check. We basically keeping traversing up until we can't
276	* or find a player.
277	*/
278
279	object *is_player_inv (object *op) {
280	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
281	if (op->env==op)
282	op->env = NULL;
283	return op;
284	}	353	}
285		354
286	/*	355	/*
287	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	356	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
288	* Some error messages.	357	* Some error messages.
289	* 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.
290	*/	359	*/
291		360
292	void dump_object2(object *op) {	361	char *
293	errmsg[0] = 0;
294	return;
295	//TODO//D#d#
296	#if 0
297	char *cp;
298	/* object *tmp;*/
299
300	if(op->arch!=NULL) {
301	strcat(errmsg,"arch ");
302	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
303	strcat(errmsg,"\n");
304	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
305	strcat(errmsg,cp);
306	#if 0
307	/* Don't dump player diffs - they are too long, mostly meaningless, and
308	* will overflow the buffer.
309	* Changed so that we don't dump inventory either. This may
310	* also overflow the buffer.
311	*/
312	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
313	strcat(errmsg,cp);
314	for (tmp=op->inv; tmp; tmp=tmp->below)
315	dump_object2(tmp);
316	#endif
317	strcat(errmsg,"end\n");
318	} else {
319	strcat(errmsg,"Object ");
320	if (op->name==NULL) strcat(errmsg, "(null)");
321	else strcat(errmsg,op->name);
322	strcat(errmsg,"\n");
323	#if 0
324	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
325	strcat(errmsg,cp);
326	for (tmp=op->inv; tmp; tmp=tmp->below)
327	dump_object2(tmp);
328	#endif
329	strcat(errmsg,"end\n");
330	}
331	#endif
332	}
333
334	/*
335	* Dumps an object. Returns output in the static global errmsg array.
336	*/
337
338	void dump_object(object *op) {	362	dump_object (object *op)
339	if(op==NULL) {	363	{
340	strcpy(errmsg,"[NULL pointer]");	364	if (!op)
341	return;	365	return strdup ("[NULLOBJ]");
342	}
343	errmsg[0]='\0';
344	dump_object2(op);
345	}
346		366
347	void dump_all_objects(void) {	367	object_freezer freezer;
348	object *op;	368	save_object (freezer, op, 1);
349	for(op=objects;op!=NULL;op=op->next) {	369	return freezer.as_string ();
350	dump_object(op);
351	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
352	}
353	}	370	}
354		371
355	/*	372	/*
356	* 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
357	* multi-object 1 which is closest to the second object.	374	* multi-object 1 which is closest to the second object.
358	* If it's not a multi-object, it is returned.	375	* If it's not a multi-object, it is returned.
359	*/	376	*/
360		377
		378	object *
361	object *get_nearest_part(object *op, const object *pl) {	379	get_nearest_part (object *op, const object *pl)
		380	{
362	object *tmp,*closest;	381	object *tmp, *closest;
363	int last_dist,i;	382	int last_dist, i;
		383
364	if(op->more==NULL)	384	if (op->more == NULL)
365	return op;	385	return op;
366	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)
367	if((i=distance(tmp,pl))<last_dist)	387	if ((i = distance (tmp, pl)) < last_dist)
368	closest=tmp,last_dist=i;	388	closest = tmp, last_dist = i;
369	return closest;	389	return closest;
370	}	390	}
371		391
372	/*	392	/*
373	* 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.
374	*/	394	*/
375		395
		396	object *
376	object *find_object(tag_t i) {	397	find_object (tag_t i)
377	object *op;	398	{
378	for(op=objects;op!=NULL;op=op->next)	399	for (object *op = object::first; op; op = op->next)
379	if(op->count==i)	400	if (op->count == i)
380	break;	401	return op;
		402
381	return op;	403	return 0;
382	}	404	}
383		405
384	/*	406	/*
385	* 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.
386	* Used only by the patch command, but not all that useful.	408	* Used only by the patch command, but not all that useful.
387	* Enables features like "patch <name-of-other-player> food 999"	409	* Enables features like "patch <name-of-other-player> food 999"
388	*/	410	*/
389		411
		412	object *
390	object *find_object_name(const char *str) {	413	find_object_name (const char *str)
391	const char *name = shstr::find (str);	414	{
		415	shstr_cmp str_ (str);
392	object *op;	416	object *op;
		417
393	for(op=objects;op!=NULL;op=op->next)	418	for (op = object::first; op != NULL; op = op->next)
394	if(&op->name == name)	419	if (op->name == str_)
395	break;	420	break;
396		421
397	return op;	422	return op;
398	}	423	}
399		424
		425	void
400	void free_all_object_data ()	426	free_all_object_data ()
401	{	427	{
402	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	428	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
403	}
404
405	/*
406	* Returns the object which this object marks as being the owner.
407	* A id-scheme is used to avoid pointing to objects which have been
408	* freed and are now reused. If this is detected, the owner is
409	* set to NULL, and NULL is returned.
410	* Changed 2004-02-12 - if the player is setting at the play again
411	* prompt, he is removed, and we don't want to treat him as an owner of
412	* anything, so check removed flag. I don't expect that this should break
413	* anything - once an object is removed, it is basically dead anyways.
414	*/
415
416	object *get_owner(object *op) {
417	if(op->owner==NULL)
418	return NULL;
419
420	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
421	op->owner->count==op->ownercount)
422	return op->owner;
423
424	op->owner=NULL;
425	op->ownercount=0;
426	return NULL;
427	}
428
429	void clear_owner(object *op)
430	{
431	if (!op) return;
432
433	if (op->owner && op->ownercount == op->owner->count)
434	op->owner->refcount--;
435
436	op->owner = NULL;
437	op->ownercount = 0;
438	}	429	}
439		430
440	/*	431	/*
441	* 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
442	* skill and experience objects.	433	* skill and experience objects.
443	*/	434	*/
444	void set_owner (object *op, object *owner)	435	void
		436	object::set_owner (object *owner)
445	{	437	{
446	if(owner==NULL||op==NULL)	438	if (!owner)
447	return;	439	return;
448		440
449	/* next line added to allow objects which own objects */	441	/* next line added to allow objects which own objects */
450	/* 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
451	* with the fireball owning a poison cloud which then owned the	443	* with the fireball owning a poison cloud which then owned the
452	* 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
453	* freed and then another object replacing it. Since the ownercounts	445	* freed and then another object replacing it. Since the ownercounts
454	* 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.
455	*/	447	*/
456	while (owner->owner && owner!=owner->owner &&	448	while (owner->owner)
457	owner->ownercount==owner->owner->count) owner=owner->owner;	449	owner = owner->owner;
458		450
459	/* IF the owner still has an owner, we did not resolve to a final owner.
460	* so lets not add to that.
461	*/
462	if (owner->owner) return;
463
464	op->owner=owner;	451	this->owner = owner;
465
466	op->ownercount=owner->count;
467	owner->refcount++;
468
469	}
470
471	/* Set the owner to clone's current owner and set the skill and experience
472	* objects to clone's objects (typically those objects that where the owner's
473	* current skill and experience objects at the time when clone's owner was
474	* set - not the owner's current skill and experience objects).
475	*
476	* Use this function if player created an object (e.g. fire bullet, swarm
477	* spell), and this object creates further objects whose kills should be
478	* accounted for the player's original skill, even if player has changed
479	* skills meanwhile.
480	*/
481	void copy_owner (object *op, object *clone)
482	{
483	object *owner = get_owner (clone);
484	if (owner == NULL) {
485	/* players don't have owners - they own themselves. Update
486	* as appropriate.
487	*/
488	if (clone->type == PLAYER) owner=clone;
489	else return;
490	}
491	set_owner(op, owner);
492
493	}	452	}
494		453
495	/* Zero the key_values on op, decrementing the shared-string	454	/* Zero the key_values on op, decrementing the shared-string
496	* refcounts and freeing the links.	455	* refcounts and freeing the links.
497	*/	456	*/
		457	static void
498	static void free_key_values(object * op)	458	free_key_values (object *op)
499	{	459	{
500	for (key_value *i = op->key_values; i != 0; )	460	for (key_value *i = op->key_values; i != 0;)
501	{	461	{
502	key_value *next = i->next;	462	key_value *next = i->next;
503	delete i;	463	delete i;
		464
504	i = next;	465	i = next;
505	}	466	}
506		467
507	op->key_values = 0;	468	op->key_values = 0;
508	}	469	}
509		470
510	void object::clear ()
511	{
512	attachable_base::clear ();
513
514	free_key_values (this);
515
516	name = 0;
517	name_pl = 0;
518	title = 0;
519	race = 0;
520	slaying = 0;
521	skill = 0;
522	msg = 0;
523	lore = 0;
524	custom_name = 0;
525	materialname = 0;
526
527	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
528
529	SET_FLAG (this, FLAG_REMOVED);
530	}
531
532	void object::clone (object *destination)
533	{
534	*(object_copy *)destination = *this;
535	*(object_pod *)destination = *this;
536
537	if (self || cb)
538	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
539	}
540
541	/*	471	/*
542	* clear_object() frees everything allocated by an object, and also
543	* clears all variables and flags to default settings.
544	*/
545
546	void clear_object (object *op)
547	{
548	op->clear ();
549
550	op->contr = NULL;
551	op->below = NULL;
552	op->above = NULL;
553	op->inv = NULL;
554	op->container=NULL;
555	op->env=NULL;
556	op->more=NULL;
557	op->head=NULL;
558	op->map=NULL;
559	op->refcount=0;
560	op->active_next = NULL;
561	op->active_prev = NULL;
562	/* What is not cleared is next, prev, and count */
563
564	op->expmul = 1.0;
565	op->face = blank_face;
566	op->attacked_by_count = -1;
567
568	if (settings.casting_time)
569	op->casting_time = -1;
570	}
571
572	/*
573	* copy object first frees everything allocated by the second object,	472	* copy_to first frees everything allocated by the dst object,
574	* and then copies the contends of the first object into the second	473	* and then copies the contents of itself into the second
575	* object, allocating what needs to be allocated. Basically, any	474	* object, allocating what needs to be allocated. Basically, any
576	* 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,
577	* 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
578	* will point at garbage.	477	* will point at garbage.
579	*/	478	*/
580		479	void
581	void copy_object (object *op2, object *op)	480	object::copy_to (object *dst)
582	{	481	{
583	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	482	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
584	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	483	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
585		484
586	op2->clone (op);	485	*(object_copy *)dst = *this;
587		486
588	if (is_freed) SET_FLAG (op, FLAG_FREED);	487	if (is_freed)
589	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	488	SET_FLAG (dst, FLAG_FREED);
590		489
		490	if (is_removed)
		491	SET_FLAG (dst, FLAG_REMOVED);
		492
591	if (op2->speed < 0)	493	if (speed < 0)
592	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	494	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
593		495
594	/* Copy over key_values, if any. */	496	/* Copy over key_values, if any. */
595	if (op2->key_values)	497	if (key_values)
596	{	498	{
597	key_value *tail = 0;	499	key_value *tail = 0;
598	key_value *i;	500	key_value *i;
599		501
600	op->key_values = 0;	502	dst->key_values = 0;
601		503
602	for (i = op2->key_values; i; i = i->next)	504	for (i = key_values; i; i = i->next)
603	{	505	{
604	key_value *new_link = new key_value;	506	key_value *new_link = new key_value;
605		507
606	new_link->next = 0;	508	new_link->next = 0;
607	new_link->key = i->key;	509	new_link->key = i->key;
608	new_link->value = i->value;	510	new_link->value = i->value;
609		511
610	/* Try and be clever here, too. */	512	/* Try and be clever here, too. */
611	if (!op->key_values)	513	if (!dst->key_values)
612	{	514	{
613	op->key_values = new_link;	515	dst->key_values = new_link;
614	tail = new_link;	516	tail = new_link;
615	}	517	}
616	else	518	else
617	{	519	{
618	tail->next = new_link;	520	tail->next = new_link;
619	tail = new_link;	521	tail = new_link;
620	}	522	}
621	}	523	}
622	}	524	}
623		525
624	update_ob_speed (op);	526	dst->set_speed (dst->speed);
		527	}
		528
		529	object *
		530	object::clone ()
		531	{
		532	object *neu = create ();
		533	copy_to (neu);
		534	return neu;
625	}	535	}
626		536
627	/*	537	/*
628	* 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
629	* 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
630	* 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.
631	*/	541	*/
632		542	void
633	void update_turn_face(object *op) {	543	update_turn_face (object *op)
		544	{
634	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	545	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
635	return;	546	return;
		547
636	SET_ANIMATION(op, op->direction);	548	SET_ANIMATION (op, op->direction);
637	update_object(op,UP_OBJ_FACE);	549	update_object (op, UP_OBJ_FACE);
638	}	550	}
639		551
640	/*	552	/*
641	* 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
642	* 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.
643	* 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.
644	*/	556	*/
645		557	void
646	void update_ob_speed(object *op) {	558	object::set_speed (float speed)
647	extern int arch_init;	559	{
648		560	if (flag [FLAG_FREED] && speed)
649	/* No reason putting the archetypes objects on the speed list,	561	{
650	* since they never really need to be updated.
651	*/
652
653	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
654	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	562	LOG (llevError, "Object %s is freed but has speed.\n", &name);
655	#ifdef MANY_CORES
656	abort();
657	#else
658	op->speed = 0;	563	speed = 0;
659	#endif
660	}	564	}
661	if (arch_init) {
662	return;
663	}
664	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
665	/* If already on active list, don't do anything */
666	if (op->active_next || op->active_prev || op==active_objects)
667	return;
668		565
669	/* process_events() expects us to insert the object at the beginning	566	this->speed = speed;
670	* of the list. */	567
671	op->active_next = active_objects;	568	if (has_active_speed ())
672	if (op->active_next!=NULL)	569	activate ();
673	op->active_next->active_prev = op;
674	active_objects = op;
675	}
676	else {	570	else
677	/* If not on the active list, nothing needs to be done */	571	deactivate ();
678	if (!op->active_next && !op->active_prev && op!=active_objects)
679	return;
680
681	if (op->active_prev==NULL) {
682	active_objects = op->active_next;
683	if (op->active_next!=NULL)
684	op->active_next->active_prev = NULL;
685	}
686	else {
687	op->active_prev->active_next = op->active_next;
688	if (op->active_next)
689	op->active_next->active_prev = op->active_prev;
690	}
691	op->active_next = NULL;
692	op->active_prev = NULL;
693	}
694	}	572	}
695		573
696	/* This function removes object 'op' from the list of active
697	* objects.
698	* This should only be used for style maps or other such
699	* reference maps where you don't want an object that isn't
700	* in play chewing up cpu time getting processed.
701	* The reverse of this is to call update_ob_speed, which
702	* will do the right thing based on the speed of the object.
703	*/
704	void remove_from_active_list(object *op)
705	{
706	/* If not on the active list, nothing needs to be done */
707	if (!op->active_next && !op->active_prev && op!=active_objects)
708	return;
709
710	if (op->active_prev==NULL) {
711	active_objects = op->active_next;
712	if (op->active_next!=NULL)
713	op->active_next->active_prev = NULL;
714	}
715	else {
716	op->active_prev->active_next = op->active_next;
717	if (op->active_next)
718	op->active_next->active_prev = op->active_prev;
719	}
720	op->active_next = NULL;
721	op->active_prev = NULL;
722	}
723
724	/*	574	/*
725	* update_object() updates the array which represents the map.	575	* update_object() updates the the map.
726	* It takes into account invisible objects (and represent squares covered	576	* It takes into account invisible objects (and represent squares covered
727	* 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
728	* invisible object, etc...)	578	* invisible object, etc...)
729	* 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
730	* 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
731	* updating that window, though, since update_object() is called _often_)	581	* updating that window, though, since update_object() is called _often_)
732	*	582	*
733	* 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.
734	* For example, if the only thing that has changed is the face (due to
735	* an animation), we don't need to call update_position until that actually
736	* comes into view of a player. OTOH, many other things, like addition/removal
737	* of walls or living creatures may need us to update the flags now.
738	* current action are:	584	* current action are:
739	* UP_OBJ_INSERT: op was inserted	585	* UP_OBJ_INSERT: op was inserted
740	* UP_OBJ_REMOVE: op was removed	586	* UP_OBJ_REMOVE: op was removed
741	* 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
742	* 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.
743	* UP_OBJ_FACE: only the objects face has changed.	589	* UP_OBJ_FACE: only the objects face has changed.
744	*/	590	*/
745		591	void
746	void update_object(object *op, int action) {	592	update_object (object *op, int action)
747	int update_now=0, flags;	593	{
748	MoveType move_on, move_off, move_block, move_slow;	594	MoveType move_on, move_off, move_block, move_slow;
749		595
750	if (op == NULL) {	596	if (op == NULL)
		597	{
751	/* this should never happen */	598	/* this should never happen */
752	LOG(llevDebug,"update_object() called for NULL object.\n");	599	LOG (llevDebug, "update_object() called for NULL object.\n");
753	return;	600	return;
754	}
755		601	}
756	if(op->env!=NULL) {	602
		603	if (op->env)
		604	{
757	/* Animation is currently handled by client, so nothing	605	/* Animation is currently handled by client, so nothing
758	* to do in this case.	606	* to do in this case.
759	*/	607	*/
760	return;	608	return;
761	}	609	}
762		610
763	/* 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
764	* going to get freed anyways.	612	* going to get freed anyways.
765	*/	613	*/
766	if (!op->map || op->map->in_memory == MAP_SAVING) return;	614	if (!op->map || op->map->in_memory == MAP_SAVING)
767		615	return;
		616
768	/* make sure the object is within map boundaries */	617	/* make sure the object is within map boundaries */
769	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)
770	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	619	{
771	LOG(llevError,"update_object() called for object out of map!\n");	620	LOG (llevError, "update_object() called for object out of map!\n");
772	#ifdef MANY_CORES	621	#ifdef MANY_CORES
773	abort();	622	abort ();
774	#endif	623	#endif
775	return;	624	return;
776	}
777		625	}
778	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
779	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
780	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
781	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
782	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
783	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
784		626
		627	mapspace &m = op->ms ();
		628
		629	if (!(m.flags_ & P_UPTODATE))
		630	/* nop */;
785	if (action == UP_OBJ_INSERT) {	631	else if (action == UP_OBJ_INSERT)
		632	{
		633	// this is likely overkill, TODO: revisit (schmorp)
786	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	634	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
787	update_now=1;
788
789	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	635	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
790	update_now=1;	636	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
791		637	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		638	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
792	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	639	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
793	update_now=1;	640	|| (m.move_on | op->move_on ) != m.move_on
794
795	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
796	update_now=1;
797
798	if (op->type == SAFE_GROUND && !(flags & P_SAFE))
799	update_now=1;
800
801	if ((move_on | op->move_on) != move_on) update_now=1;
802
803	if ((move_off | op->move_off) != move_off) update_now=1;	641	|| (m.move_off | op->move_off ) != m.move_off
804		642	|| (m.move_slow | op->move_slow) != m.move_slow
805	/* 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
806	* to have move_allow right now.	644	* to have move_allow right now.
807	*/	645	*/
808	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	646	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
809	update_now=1;	647	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
810		648	m.flags_ = 0;
811	if ((move_slow | op->move_slow) != move_slow)
812	update_now=1;
813	}	649	}
814	/* if the object is being removed, we can't make intelligent	650	/* if the object is being removed, we can't make intelligent
815	* decisions, because remove_ob can't really pass the object	651	* decisions, because remove_ob can't really pass the object
816	* that is being removed.	652	* that is being removed.
817	*/	653	*/
818	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	654	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
819	update_now=1;	655	m.flags_ = 0;
820	} else if (action == UP_OBJ_FACE) {	656	else if (action == UP_OBJ_FACE)
821	/* Nothing to do for that case */	657	/* Nothing to do for that case */ ;
822	}
823	else {	658	else
824	LOG(llevError,"update_object called with invalid action: %d\n", action);	659	LOG (llevError, "update_object called with invalid action: %d\n", action);
825	}
826		660
827	if (update_now) {
828	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
829	update_position(op->map, op->x, op->y);
830	}
831
832	if(op->more!=NULL)	661	if (op->more)
833	update_object(op->more, action);	662	update_object (op->more, action);
834	}	663	}
835		664
836	static std::vector<object *> mortals;	665	object *object::first;
837
838	void object::free_mortals ()
839	{
840	for (std::vector<object *>::iterator i = mortals.begin (); i != mortals.end (); ++i)
841	delete *i;
842
843	mortals.clear ();
844	}
845		666
846	object::object ()	667	object::object ()
847	{	668	{
848	SET_FLAG (this, FLAG_REMOVED);	669	SET_FLAG (this, FLAG_REMOVED);
849		670
850	expmul = 1.0;	671	expmul = 1.0;
851	face = blank_face;	672	face = blank_face;
852	attacked_by_count = -1;
853	}	673	}
854		674
855	object::~object ()	675	object::~object ()
856	{	676	{
857	free_key_values (this);	677	free_key_values (this);
858	}	678	}
859		679
860	void
861	object::link ()	680	void object::link ()
862	{	681	{
863	count = ++ob_count;	682	count = ++ob_count;
		683	uuid = gen_uuid ();
864		684
865	prev = 0;	685	prev = 0;
866	next = objects;	686	next = object::first;
867		687
868	if (objects)	688	if (object::first)
869	objects->prev = this;	689	object::first->prev = this;
870		690
871	objects = this;	691	object::first = this;
872	}	692	}
873		693
874	void
875	object::unlink ()	694	void object::unlink ()
876	{	695	{
877	count = 0;	696	if (this == object::first)
		697	object::first = next;
878		698
879	/* Remove this object from the list of used objects */	699	/* Remove this object from the list of used objects */
880	if (prev) prev->next = next;	700	if (prev) prev->next = next;
881	if (next) next->prev = prev;	701	if (next) next->prev = prev;
882	if (this == objects) objects = next;	702
883	}	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	}
		712
		713	void
		714	object::activate ()
		715	{
		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	}
		731	}
		732
		733	void
		734	object::activate_recursive ()
		735	{
		736	activate ();
		737
		738	for (object *op = inv; op; op = op->above)
		739	op->activate_recursive ();
		740	}
		741
		742	/* This function removes object 'op' from the list of active
		743	* objects.
		744	* This should only be used for style maps or other such
		745	* reference maps where you don't want an object that isn't
		746	* in play chewing up cpu time getting processed.
		747	* The reverse of this is to call update_ob_speed, which
		748	* will do the right thing based on the speed of the object.
		749	*/
		750	void
		751	object::deactivate ()
		752	{
		753	/* If not on the active list, nothing needs to be done */
		754	if (!active ())
		755	return;
		756
		757	if (active_prev == 0)
		758	{
		759	active_objects = active_next;
		760	if (active_next)
		761	active_next->active_prev = 0;
		762	}
		763	else
		764	{
		765	active_prev->active_next = active_next;
		766	if (active_next)
		767	active_next->active_prev = active_prev;
		768	}
		769
		770	active_next = 0;
		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	}
884		830
885	object *object::create ()	831	object *object::create ()
886	{	832	{
887	object *op = new object;	833	object *op = new object;
888	op->link ();	834	op->link ();
889	return op;	835	return op;
890	}	836	}
891		837
892	/*
893	* free_object() frees everything allocated by an object, removes
894	* it from the list of used objects, and puts it on the list of
895	* free objects. The IS_FREED() flag is set in the object.
896	* The object must have been removed by remove_ob() first for
897	* this function to succeed.
898	*
899	* If free_inventory is set, free inventory as well. Else drop items in
900	* inventory to the ground.
901	*/
902	void	838	void
903	object::free (bool free_inventory)	839	object::do_destroy ()
904	{	840	{
905	if (!QUERY_FLAG (this, FLAG_REMOVED))	841	if (flag [FLAG_IS_LINKED])
906	{	842	remove_button_link (this);
907	LOG (llevDebug, "Free object called with non removed object\n");
908	dump_object (this);
909	#ifdef MANY_CORES
910	abort ();
911	#endif
912	}
913		843
914	if (QUERY_FLAG (this, FLAG_FRIENDLY))	844	if (flag [FLAG_FRIENDLY])
915	{
916	LOG (llevMonster, "Warning: tried to free friendly object.\n");
917	remove_friendly_object (this);	845	remove_friendly_object (this);
918	}
919		846
920	if (QUERY_FLAG (this, FLAG_FREED))	847	if (!flag [FLAG_REMOVED])
921	{	848	remove ();
922	dump_object (this);	849
923	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	850	if (flag [FLAG_FREED])
924	return;	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 ();
925	}	875	}
		876
		877	map = freed_map;
		878	x = 1;
		879	y = 1;
		880	}
		881
		882	head = 0;
926		883
927	if (more)	884	if (more)
928	{	885	{
929	more->free (free_inventory);	886	more->destroy ();
930	more = 0;	887	more = 0;
931	}	888	}
932		889
933	if (inv)	890	// clear those pointers that likely might have circular references to us
934	{	891	owner = 0;
935	/* Only if the space blocks everything do we not process -	892	enemy = 0;
936	* if some form of movement is allowed, let objects	893	attacked_by = 0;
937	* drop on that space.
938	*/
939	if (free_inventory || !map
940	|| map->in_memory != MAP_IN_MEMORY
941	|| (GET_MAP_MOVE_BLOCK (map, x, y) == MOVE_ALL))
942	{
943	object *op = inv;
944		894
945	while (op)	895	// only relevant for players(?), but make sure of it anyways
946	{	896	contr = 0;
947	object *tmp = op->below;	897	}
948	remove_ob (op);
949	op->free (free_inventory);
950	op = tmp;
951	}
952	}
953	else
954	{ /* Put objects in inventory onto this space */
955	object *op = inv;
956		898
957	while (op)	899	void
958	{	900	object::destroy (bool destroy_inventory)
959	object *tmp = op->below;	901	{
960	remove_ob (op);	902	if (destroyed ())
		903	return;
961		904
962	if (QUERY_FLAG (op, FLAG_STARTEQUIP)	905	if (destroy_inventory)
963	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE	906	destroy_inv (false);
964	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
965	free_object (op);
966	else
967	{
968	op->x = x;
969	op->y = y;
970	insert_ob_in_map (op, map, 0, 0); /* Insert in same map as the envir */
971	}
972		907
973	op = tmp;	908	attachable::destroy ();
974	}
975	}
976	}
977
978	/* Remove object from the active list */
979	speed = 0;
980	update_ob_speed (this);
981
982	unlink ();
983
984	SET_FLAG (this, FLAG_FREED);
985
986	mortals.push_back (this);
987	}	909	}
988		910
989	/*	911	/*
990	* sub_weight() recursively (outwards) subtracts a number from the	912	* sub_weight() recursively (outwards) subtracts a number from the
991	* 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)).
992	*/	914	*/
993		915	void
994	void sub_weight (object *op, signed long weight) {	916	sub_weight (object *op, signed long weight)
		917	{
995	while (op != NULL) {	918	while (op != NULL)
		919	{
996	if (op->type == CONTAINER) {	920	if (op->type == CONTAINER)
997	weight=(signed long)(weight*(100-op->stats.Str)/100);	921	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
998	}	922
999	op->carrying-=weight;	923	op->carrying -= weight;
1000	op = op->env;	924	op = op->env;
1001	}	925	}
1002	}	926	}
1003		927
1004	/* remove_ob(op):	928	/* op->remove ():
1005	* 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
1006	* 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
1007	* object will have no environment. If the object previously had an	931	* object will have no environment. If the object previously had an
1008	* environment, the x and y coordinates will be updated to	932	* environment, the x and y coordinates will be updated to
1009	* the previous environment.	933	* the previous environment.
1010	* Beware: This function is called from the editor as well!	934	* Beware: This function is called from the editor as well!
1011	*/	935	*/
1012		936	void
1013	void remove_ob(object *op) {	937	object::remove ()
		938	{
1014	object *tmp,*last=NULL;	939	object *tmp, *last = 0;
1015	object *otmp;	940	object *otmp;
1016	tag_t tag;
1017	int check_walk_off;
1018	mapstruct *m;
1019	sint16 x,y;
1020
1021		941
1022	if(QUERY_FLAG(op,FLAG_REMOVED)) {	942	if (QUERY_FLAG (this, FLAG_REMOVED))
1023	dump_object(op);	943	return;
1024	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1025		944
1026	/* Changed it to always dump core in this case. As has been learned
1027	* in the past, trying to recover from errors almost always
1028	* make things worse, and this is a real error here - something
1029	* that should not happen.
1030	* Yes, if this was a mission critical app, trying to do something
1031	* to recover may make sense, but that is because failure of the app
1032	* may have other disastrous problems. Cf runs out of a script
1033	* so is easily enough restarted without any real problems.
1034	* MSW 2001-07-01
1035	*/
1036	abort();
1037	}
1038	if(op->more!=NULL)
1039	remove_ob(op->more);
1040
1041	SET_FLAG(op, FLAG_REMOVED);	945	SET_FLAG (this, FLAG_REMOVED);
		946	INVOKE_OBJECT (REMOVE, this);
1042		947
		948	if (more)
		949	more->remove ();
		950
1043	/*	951	/*
1044	* In this case, the object to be removed is in someones	952	* In this case, the object to be removed is in someones
1045	* inventory.	953	* inventory.
1046	*/	954	*/
1047	if(op->env!=NULL) {	955	if (env)
		956	{
1048	if(op->nrof)	957	if (nrof)
1049	sub_weight(op->env, op->weight*op->nrof);	958	sub_weight (env, weight * nrof);
1050	else	959	else
1051	sub_weight(op->env, op->weight+op->carrying);	960	sub_weight (env, weight + carrying);
1052		961
1053	/* 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
1054	* made to players inventory. If set, avoiding the call	963	* made to players inventory. If set, avoiding the call
1055	* to save cpu time.	964	* to save cpu time.
1056	*/	965	*/
1057	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	966	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1058	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	967	otmp->update_stats ();
1059	fix_player(otmp);
1060		968
1061	if(op->above!=NULL)	969	if (above)
1062	op->above->below=op->below;	970	above->below = below;
1063	else	971	else
1064	op->env->inv=op->below;	972	env->inv = below;
1065		973
1066	if(op->below!=NULL)	974	if (below)
1067	op->below->above=op->above;	975	below->above = above;
1068		976
1069	/* we set up values so that it could be inserted into	977	/* we set up values so that it could be inserted into
1070	* 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
1071	* 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
1072	*/	1010	*/
1073	op->x=op->env->x,op->y=op->env->y;	1011	if (GET_MAP_OB (map, x, y) != this)
1074	op->map=op->env->map;	1012	{
1075	op->above=NULL,op->below=NULL;	1013	char *dump = dump_object (this);
1076	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)
1077	return;	1029	return;
1078	}
1079		1030
1080	/* If we get here, we are removing it from a map */	1031	int check_walk_off = !flag [FLAG_NO_APPLY];
1081	if (op->map == NULL) return;
1082		1032
1083	x = op->x;	1033	for (tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
1084	y = op->y;
1085	m = get_map_from_coord(op->map, &x, &y);
1086
1087	if (!m) {
1088	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1089	op->map->path, op->x, op->y);
1090	/* in old days, we used to set x and y to 0 and continue.
1091	* it seems if we get into this case, something is probablye
1092	* screwed up and should be fixed.
1093	*/
1094	abort();
1095	}
1096	if (op->map != m) {
1097	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1098	op->map->path, m->path, op->x, op->y, x, y);
1099	}
1100
1101	/* Re did the following section of code - it looks like it had
1102	* lots of logic for things we no longer care about
1103	*/
1104
1105	/* link the object above us */
1106	if (op->above)
1107	op->above->below=op->below;
1108	else
1109	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1110
1111	/* Relink the object below us, if there is one */
1112	if(op->below) {
1113	op->below->above=op->above;
1114	} else {
1115	/* Nothing below, which means we need to relink map object for this space
1116	* use translated coordinates in case some oddness with map tiling is
1117	* evident
1118	*/
1119	if(GET_MAP_OB(m,x,y)!=op) {
1120	dump_object(op);
1121	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);
1122	dump_object(GET_MAP_OB(m,x,y));
1123	LOG(llevError,"%s\n",errmsg);
1124	}	1034	{
1125	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1126	}
1127	op->above=NULL;
1128	op->below=NULL;
1129
1130	if (op->map->in_memory == MAP_SAVING)
1131	return;
1132
1133	tag = op->count;
1134	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1135	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1136	/* 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
1137	* being removed.	1036	* being removed.
1138	*/	1037	*/
1139		1038
1140	if(tmp->type==PLAYER && tmp!=op) {	1039	if (tmp->type == PLAYER && tmp != this)
		1040	{
1141	/* If a container that the player is currently using somehow gets	1041	/* If a container that the player is currently using somehow gets
1142	* removed (most likely destroyed), update the player view	1042	* removed (most likely destroyed), update the player view
1143	* appropriately.	1043	* appropriately.
1144	*/	1044	*/
1145	if (tmp->container==op) {	1045	if (tmp->container == this)
1146	CLEAR_FLAG(op, FLAG_APPLIED);	1046	{
		1047	flag [FLAG_APPLIED] = 0;
1147	tmp->container=NULL;	1048	tmp->container = 0;
		1049	}
		1050
		1051	if (tmp->contr->ns)
		1052	tmp->contr->ns->floorbox_update ();
1148	}	1053	}
1149	tmp->contr->socket.update_look=1;	1054
1150	}
1151	/* See if player moving off should effect something */	1055	/* See if object moving off should effect something */
1152	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1056	if (check_walk_off
		1057	&& ((move_type & tmp->move_off)
1153	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1058	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1154		1059	{
1155	move_apply(tmp, op, NULL);	1060	move_apply (tmp, this, 0);
		1061
1156	if (was_destroyed (op, tag)) {	1062	if (destroyed ())
1157	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 ());
1158	"leaving object\n", &tmp->name, &tmp->arch->name);
1159	}	1064	}
1160	}
1161		1065
1162	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1066	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1163		1067	//TODO: why is this horrible hacka fix? get rid of this code=bug! (schmorp)
1164	if(tmp->above == tmp)	1068	if (tmp->above == tmp)
1165	tmp->above = NULL;	1069	tmp->above = 0;
		1070
1166	last=tmp;	1071	last = tmp;
1167	}	1072	}
		1073
1168	/* last == NULL of there are no objects on this space */	1074	/* last == NULL if there are no objects on this space */
1169	if (last==NULL) {	1075	//TODO: this makes little sense, why only update the topmost object?
1170	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1076	if (!last)
1171	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1077	map->at (x, y).flags_ = 0;
1172	* those out anyways, and if there are any flags set right now, they won't
1173	* be correct anyways.
1174	*/
1175	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1176	update_position(op->map, op->x, op->y);
1177	}
1178	else	1078	else
1179	update_object(last, UP_OBJ_REMOVE);	1079	update_object (last, UP_OBJ_REMOVE);
1180		1080
1181	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1081	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1182	update_all_los(op->map, op->x, op->y);	1082	update_all_los (map, x, y);
1183		1083	}
1184	}	1084	}
1185		1085
1186	/*	1086	/*
1187	* merge_ob(op,top):	1087	* merge_ob(op,top):
1188	*	1088	*
1189	* This function goes through all objects below and including top, and	1089	* This function goes through all objects below and including top, and
1190	* merges op to the first matching object.	1090	* merges op to the first matching object.
1191	* If top is NULL, it is calculated.	1091	* If top is NULL, it is calculated.
1192	* 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
1193	*/	1093	*/
1194		1094	object *
1195	object *merge_ob(object *op, object *top) {	1095	merge_ob (object *op, object *top)
		1096	{
1196	if(!op->nrof)	1097	if (!op->nrof)
1197	return 0;	1098	return 0;
1198	if(top==NULL)	1099
		1100	if (top)
1199	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1101	for (top = op; top && top->above; top = top->above)
		1102	;
		1103
1200	for(;top!=NULL;top=top->below) {	1104	for (; top; top = top->below)
		1105	{
1201	if(top==op)	1106	if (top == op)
1202	continue;	1107	continue;
1203	if (CAN_MERGE(op,top))	1108
1204	{	1109	if (object::can_merge (op, top))
		1110	{
1205	top->nrof+=op->nrof;	1111	top->nrof += op->nrof;
		1112
1206	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1113	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1207	op->weight = 0; /* Don't want any adjustements now */	1114	op->weight = 0; /* Don't want any adjustements now */
1208	remove_ob(op);	1115	op->destroy ();
1209	free_object(op);
1210	return top;	1116	return top;
1211	}	1117	}
1212	}	1118	}
		1119
1213	return NULL;	1120	return 0;
1214	}	1121	}
1215		1122
1216	/*	1123	/*
1217	* 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
1218	* job preparing multi-part monsters	1125	* job preparing multi-part monsters
1219	*/	1126	*/
		1127	object *
1220	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)
1221	object* tmp;	1129	{
1222	if (op->head)	1130	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1223	op=op->head;	1131	{
1224	for (tmp=op;tmp;tmp=tmp->more){
1225	tmp->x=x+tmp->arch->clone.x;	1132	tmp->x = x + tmp->arch->clone.x;
1226	tmp->y=y+tmp->arch->clone.y;	1133	tmp->y = y + tmp->arch->clone.y;
1227	}	1134	}
		1135
1228	return insert_ob_in_map (op, m, originator, flag);	1136	return insert_ob_in_map (op, m, originator, flag);
1229	}	1137	}
1230		1138
1231	/*	1139	/*
1232	* insert_ob_in_map (op, map, originator, flag):	1140	* insert_ob_in_map (op, map, originator, flag):
1233	* This function inserts the object in the two-way linked list	1141	* This function inserts the object in the two-way linked list
…		…
1246	* Return value:	1154	* Return value:
1247	* new object if 'op' was merged with other object	1155	* new object if 'op' was merged with other object
1248	* NULL if 'op' was destroyed	1156	* NULL if 'op' was destroyed
1249	* just 'op' otherwise	1157	* just 'op' otherwise
1250	*/	1158	*/
1251		1159	object *
1252	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)
1253	{	1161	{
1254	object *tmp, *top, *floor=NULL;	1162	object *tmp, *top, *floor = NULL;
1255	sint16 x,y;	1163	sint16 x, y;
1256		1164
1257	if (QUERY_FLAG (op, FLAG_FREED)) {	1165	if (QUERY_FLAG (op, FLAG_FREED))
		1166	{
1258	LOG (llevError, "Trying to insert freed object!\n");	1167	LOG (llevError, "Trying to insert freed object!\n");
1259	return NULL;	1168	return NULL;
		1169	}
		1170
		1171	if (!m)
1260	}	1172	{
1261	if(m==NULL) {
1262	dump_object(op);	1173	char *dump = dump_object (op);
1263	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);
1264	return op;	1176	return op;
1265	}	1177	}
		1178
1266	if(out_of_map(m,op->x,op->y)) {	1179	if (out_of_map (m, op->x, op->y))
		1180	{
1267	dump_object(op);	1181	char *dump = dump_object (op);
1268	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);
1269	#ifdef MANY_CORES	1183	#ifdef MANY_CORES
1270	/* 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
1271	* 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
1272	* improperly inserted.	1186	* improperly inserted.
1273	*/	1187	*/
1274	abort();	1188	abort ();
1275	#endif	1189	#endif
		1190	free (dump);
1276	return op;	1191	return op;
1277	}	1192	}
		1193
1278	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1194	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1195	{
1279	dump_object(op);	1196	char *dump = dump_object (op);
1280	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);
1281	return op;	1199	return op;
		1200	}
		1201
		1202	if (op->more)
1282	}	1203	{
1283	if(op->more!=NULL) {
1284	/* The part may be on a different map. */	1204	/* The part may be on a different map. */
1285		1205
1286	object *more = op->more;	1206	object *more = op->more;
1287		1207
1288	/* We really need the caller to normalize coordinates - if	1208	/* We really need the caller to normalize coordinates - if
1289	* 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
1290	* 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
1291	* is clear wrong do we normalize it.	1211	* is clear wrong do we normalize it.
1292	*/	1212	*/
1293	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1213	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1294	more->map = get_map_from_coord(m, &more->x, &more->y);	1214	more->map = get_map_from_coord (m, &more->x, &more->y);
1295	} else if (!more->map) {	1215	else if (!more->map)
		1216	{
1296	/* For backwards compatibility - when not dealing with tiled maps,	1217	/* For backwards compatibility - when not dealing with tiled maps,
1297	* more->map should always point to the parent.	1218	* more->map should always point to the parent.
1298	*/	1219	*/
1299	more->map = m;	1220	more->map = m;
1300	}	1221	}
1301		1222
1302	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1223	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1224	{
1303	if ( ! op->head)	1225	if (!op->head)
1304	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
1305	return NULL;	1228	return 0;
1306	}	1229	}
1307	}	1230	}
		1231
1308	CLEAR_FLAG(op,FLAG_REMOVED);	1232	CLEAR_FLAG (op, FLAG_REMOVED);
1309		1233
1310	/* Ideally, the caller figures this out. However, it complicates a lot	1234	/* Ideally, the caller figures this out. However, it complicates a lot
1311	* 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
1312	* need extra work	1236	* need extra work
1313	*/	1237	*/
1314	op->map=get_map_from_coord(m, &op->x, &op->y);	1238	op->map = get_map_from_coord (m, &op->x, &op->y);
1315	x = op->x;	1239	x = op->x;
1316	y = op->y;	1240	y = op->y;
1317		1241
1318	/* this has to be done after we translate the coordinates.	1242	/* this has to be done after we translate the coordinates.
1319	*/	1243	*/
1320	if(op->nrof && !(flag & INS_NO_MERGE)) {	1244	if (op->nrof && !(flag & INS_NO_MERGE))
1321	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)
1322	if (CAN_MERGE(op,tmp)) {	1246	if (object::can_merge (op, tmp))
		1247	{
1323	op->nrof+=tmp->nrof;	1248	op->nrof += tmp->nrof;
1324	remove_ob(tmp);	1249	tmp->destroy ();
1325	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;
1326	}	1310	}
1327	}
1328		1311
1329	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 */
1330	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1313	top = last;
1331	if (!QUERY_FLAG(op, FLAG_ALIVE))
1332	CLEAR_FLAG(op, FLAG_NO_STEAL);
1333		1314
1334	if (flag & INS_BELOW_ORIGINATOR) {	1315	/* We let update_position deal with figuring out what the space
1335	if (originator->map != op->map || originator->x != op->x ||	1316	* looks like instead of lots of conditions here.
1336	originator->y != op->y) {	1317	* makes things faster, and effectively the same result.
1337	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1338	abort();
1339	}
1340	op->above = originator;
1341	op->below = originator->below;
1342	if (op->below) op->below->above = op;
1343	else SET_MAP_OB(op->map, op->x, op->y, op);
1344	/* since *below* originator, no need to update top */
1345	originator->below = op;
1346	} else {
1347	/* If there are other objects, then */
1348	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1349	object *last=NULL;
1350	/*	1318	*/
1351	* If there are multiple objects on this space, we do some trickier handling.	1319
1352	* We've already dealt with merging if appropriate.	1320	/* Have object 'fall below' other objects that block view.
1353	* Generally, we want to put the new object on top. But if	1321	* Unless those objects are exits, type 66
1354	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1322	* If INS_ON_TOP is used, don't do this processing
1355	* floor, we want to insert above that and no further.	1323	* Need to find the object that in fact blocks view, otherwise
1356	* Also, if there are spell objects on this space, we stop processing	1324	* stacking is a bit odd.
1357	* once we get to them. This reduces the need to traverse over all of	1325	*/
1358	* them when adding another one - this saves quite a bit of cpu time	1326	if (!(flag & INS_ON_TOP) &&
1359	* 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))
1360	* 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.
1361	*/	1336	*/
1362		1337	if (last && last->below && last != floor)
1363	while (top != NULL) {
1364	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1365	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1366	if (QUERY_FLAG(top, FLAG_NO_PICK)
1367	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1368	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1369	{
1370	/* We insert above top, so we want this object below this */
1371	top=top->below;
1372	break;
1373	}
1374	last = top;
1375	top = top->above;	1338	top = last->below;
1376	}	1339	}
1377	/* Don't want top to be NULL, so set it to the last valid object */
1378	top = last;
1379
1380	/* We let update_position deal with figuring out what the space
1381	* looks like instead of lots of conditions here.
1382	* makes things faster, and effectively the same result.
1383	*/
1384
1385	/* Have object 'fall below' other objects that block view.
1386	* Unless those objects are exits, type 66
1387	* If INS_ON_TOP is used, don't do this processing
1388	* Need to find the object that in fact blocks view, otherwise
1389	* stacking is a bit odd.
1390	*/
1391	if (!(flag & INS_ON_TOP) &&
1392	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1393	(op->face && !op->face->visibility)) {
1394	for (last=top; last != floor; last=last->below)
1395	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1396	/* Check to see if we found the object that blocks view,
1397	* and make sure we have a below pointer for it so that
1398	* we can get inserted below this one, which requires we
1399	* set top to the object below us.
1400	*/
1401	if (last && last->below && last != floor) top=last->below;
1402	}
1403	} /* If objects on this space */	1340	} /* If objects on this space */
		1341
1404	if (flag & INS_MAP_LOAD)	1342	if (flag & INS_MAP_LOAD)
1405	top = GET_MAP_TOP(op->map,op->x,op->y);	1343	top = GET_MAP_TOP (op->map, op->x, op->y);
		1344
1406	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1345	if (flag & INS_ABOVE_FLOOR_ONLY)
		1346	top = floor;
1407		1347
1408	/* 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.
1409	*/	1349	*/
1410		1350
1411	/* First object on this space */	1351	/* First object on this space */
1412	if (!top) {	1352	if (!top)
		1353	{
1413	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)
1414	if (op->above) op->above->below = op;	1357	op->above->below = op;
		1358
1415	op->below = NULL;	1359	op->below = 0;
1416	SET_MAP_OB(op->map, op->x, op->y, op);	1360	op->ms ().bot = op;
		1361	}
		1362	else
1417	} else { /* get inserted into the stack above top */	1363	{ /* get inserted into the stack above top */
1418	op->above = top->above;	1364	op->above = top->above;
		1365
		1366	if (op->above)
1419	if (op->above) op->above->below = op;	1367	op->above->below = op;
		1368
1420	op->below = top;	1369	op->below = top;
1421	top->above = op;	1370	top->above = op;
1422	}	1371	}
		1372
1423	if (op->above==NULL)	1373	if (!op->above)
1424	SET_MAP_TOP(op->map,op->x, op->y, op);	1374	op->ms ().top = op;
1425	} /* else not INS_BELOW_ORIGINATOR */	1375	} /* else not INS_BELOW_ORIGINATOR */
1426		1376
1427	if(op->type==PLAYER)	1377	if (op->type == PLAYER)
		1378	{
1428	op->contr->do_los=1;	1379	op->contr->do_los = 1;
		1380	++op->map->players;
		1381	op->map->touch ();
		1382	}
1429		1383
		1384	op->map->dirty = true;
		1385
1430	/* 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
1431	* it, so save a few ticks and start from there.	1387	* it, so save a few ticks and start from there.
1432	*/	1388	*/
1433	if (!(flag & INS_MAP_LOAD))	1389	if (!(flag & INS_MAP_LOAD))
1434	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 ())
1435	if (tmp->type == PLAYER)	1391	if (pl->contr->ns)
1436	tmp->contr->socket.update_look=1;	1392	pl->contr->ns->floorbox_update ();
1437	}
1438		1393
1439	/* If this object glows, it may affect lighting conditions that are	1394	/* If this object glows, it may affect lighting conditions that are
1440	* 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
1441	* 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
1442	* on the map will get recalculated. The players could very well	1397	* on the map will get recalculated. The players could very well
1443	* 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 -
1444	* this should get redone to only look for players within range,	1399	* this should get redone to only look for players within range,
1445	* or just updating the P_NEED_UPDATE for spaces within this area	1400	* or just updating the P_UPTODATE for spaces within this area
1446	* of effect may be sufficient.	1401	* of effect may be sufficient.
1447	*/	1402	*/
1448	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1403	if (op->map->darkness && (op->glow_radius != 0))
1449	update_all_los(op->map, op->x, op->y);	1404	update_all_los (op->map, op->x, op->y);
1450		1405
1451
1452	/* updates flags (blocked, alive, no magic, etc) for this map space */	1406	/* updates flags (blocked, alive, no magic, etc) for this map space */
1453	update_object(op,UP_OBJ_INSERT);	1407	update_object (op, UP_OBJ_INSERT);
1454		1408
		1409	INVOKE_OBJECT (INSERT, op);
1455		1410
1456	/* 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,
1457	* we want to have update_look set above before calling this.	1412	* we want to have floorbox_update called before calling this.
1458	*	1413	*
1459	* check_move_on() must be after this because code called from	1414	* check_move_on() must be after this because code called from
1460	* check_move_on() depends on correct map flags (so functions like	1415	* check_move_on() depends on correct map flags (so functions like
1461	* blocked() and wall() work properly), and these flags are updated by	1416	* blocked() and wall() work properly), and these flags are updated by
1462	* update_object().	1417	* update_object().
1463	*/	1418	*/
1464		1419
1465	/* 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 */
1466
1467	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1421	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1422	{
1468	if (check_move_on(op, originator))	1423	if (check_move_on (op, originator))
1469	return NULL;	1424	return 0;
1470		1425
1471	/* 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
1472	* walk on's.	1427	* walk on's.
1473	*/	1428	*/
1474	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1429	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1475	if (check_move_on (tmp, originator))	1430	if (check_move_on (tmp, originator))
1476	return NULL;	1431	return 0;
1477	}	1432	}
		1433
1478	return op;	1434	return op;
1479	}	1435	}
1480		1436
1481	/* this function inserts an object in the map, but if it	1437	/* this function inserts an object in the map, but if it
1482	* 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.
1483	* 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.
1484	*/	1440	*/
		1441	void
1485	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1442	replace_insert_ob_in_map (const char *arch_string, object *op)
1486	object *tmp;	1443	{
1487	object *tmp1;	1444	object *tmp, *tmp1;
1488		1445
1489	/* first search for itself and remove any old instances */	1446	/* first search for itself and remove any old instances */
1490		1447
1491	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)
1492	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1449	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1493	remove_ob(tmp);	1450	tmp->destroy ();
1494	free_object(tmp);
1495	}
1496	}
1497		1451
1498	tmp1=arch_to_object(find_archetype(arch_string));	1452	tmp1 = arch_to_object (archetype::find (arch_string));
1499		1453
1500		1454	tmp1->x = op->x;
1501	tmp1->x = op->x; tmp1->y = op->y;	1455	tmp1->y = op->y;
1502	insert_ob_in_map(tmp1,op->map,op,0);	1456	insert_ob_in_map (tmp1, op->map, op, 0);
1503	}	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	}
1504		1464
1505	/*	1465	/*
1506	* 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
1507	* is returned contains nr objects, and the remaining parts contains	1467	* is returned contains nr objects, and the remaining parts contains
1508	* 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).
1509	* On failure, NULL is returned, and the reason put into the	1469	* On failure, NULL is returned, and the reason put into the
1510	* global static errmsg array.	1470	* global static errmsg array.
1511	*/	1471	*/
1512		1472	object *
1513	object *get_split_ob(object *orig_ob, uint32 nr) {	1473	get_split_ob (object *orig_ob, uint32 nr)
		1474	{
1514	object *newob;	1475	object *newob;
1515	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1476	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1516		1477
1517	if(orig_ob->nrof<nr) {	1478	if (orig_ob->nrof < nr)
1518	sprintf(errmsg,"There are only %d %ss.",	1479	{
1519	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);
1520	return NULL;	1481	return NULL;
1521	}	1482	}
		1483
1522	newob = object_create_clone(orig_ob);	1484	newob = object_create_clone (orig_ob);
		1485
1523	if((orig_ob->nrof-=nr)<1) {	1486	if ((orig_ob->nrof -= nr) < 1)
1524	if ( ! is_removed)	1487	orig_ob->destroy (1);
1525	remove_ob(orig_ob);
1526	free_object2(orig_ob, 1);
1527	}
1528	else if ( ! is_removed) {	1488	else if (!is_removed)
		1489	{
1529	if(orig_ob->env!=NULL)	1490	if (orig_ob->env != NULL)
1530	sub_weight (orig_ob->env,orig_ob->weight*nr);	1491	sub_weight (orig_ob->env, orig_ob->weight * nr);
1531	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	{
1532	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.");
1533	LOG(llevDebug,
1534	"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");
1535	return NULL;	1496	return NULL;
1536	}	1497	}
1537	}	1498	}
		1499
1538	newob->nrof=nr;	1500	newob->nrof = nr;
1539		1501
1540	return newob;	1502	return newob;
1541	}	1503	}
1542		1504
1543	/*	1505	/*
1544	* decrease_ob_nr(object, number) decreases a specified number from	1506	* decrease_ob_nr(object, number) decreases a specified number from
1545	* 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
1546	* is subsequently removed and freed.	1508	* is subsequently removed and freed.
1547	*	1509	*
1548	* 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
1549	*/	1511	*/
1550		1512
		1513	object *
1551	object *decrease_ob_nr (object *op, uint32 i)	1514	decrease_ob_nr (object *op, uint32 i)
1552	{	1515	{
1553	object *tmp;	1516	object *tmp;
1554	player *pl;
1555		1517
1556	if (i == 0) /* objects with op->nrof require this check */	1518	if (i == 0) /* objects with op->nrof require this check */
1557	return op;	1519	return op;
1558		1520
1559	if (i > op->nrof)	1521	if (i > op->nrof)
1560	i = op->nrof;	1522	i = op->nrof;
1561		1523
1562	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	}
1563	{	1560	}
		1561	else
		1562	{
		1563	object *above = op->above;
		1564
		1565	if (i < op->nrof)
1564	op->nrof -= i;	1566	op->nrof -= i;
1565	}	1567	else
1566	else if (op->env != NULL)
1567	{
1568	/* is this object in the players inventory, or sub container
1569	* therein?
1570	*/
1571	tmp = is_player_inv (op->env);
1572	/* nope. Is this a container the player has opened?
1573	* If so, set tmp to that player.
1574	* IMO, searching through all the players will mostly
1575	* likely be quicker than following op->env to the map,
1576	* and then searching the map for a player.
1577	*/
1578	if (!tmp) {
1579	for (pl=first_player; pl; pl=pl->next)
1580	if (pl->ob->container == op->env) break;
1581	if (pl) tmp=pl->ob;
1582	else tmp=NULL;
1583	}	1568	{
1584
1585	if (i < op->nrof) {
1586	sub_weight (op->env, op->weight * i);
1587	op->nrof -= i;
1588	if (tmp) {
1589	esrv_send_item(tmp, op);
1590	}
1591	} else {
1592	remove_ob (op);	1569	op->remove ();
1593	op->nrof = 0;	1570	op->nrof = 0;
1594	if (tmp) {
1595	esrv_del_item(tmp->contr, op->count);
1596	}	1571	}
1597	}
1598	}
1599	else
1600	{
1601	object *above = op->above;
1602		1572
1603	if (i < op->nrof) {
1604	op->nrof -= i;
1605	} else {
1606	remove_ob (op);
1607	op->nrof = 0;
1608	}
1609	/* Since we just removed op, op->above is null */	1573	/* Since we just removed op, op->above is null */
1610	for (tmp = above; tmp != NULL; tmp = tmp->above)	1574	for (tmp = above; tmp; tmp = tmp->above)
1611	if (tmp->type == PLAYER) {	1575	if (tmp->type == PLAYER)
		1576	{
1612	if (op->nrof)	1577	if (op->nrof)
1613	esrv_send_item(tmp, op);	1578	esrv_send_item (tmp, op);
1614	else	1579	else
1615	esrv_del_item(tmp->contr, op->count);	1580	esrv_del_item (tmp->contr, op->count);
1616	}	1581	}
1617	}	1582	}
1618		1583
1619	if (op->nrof) {	1584	if (op->nrof)
1620	return op;	1585	return op;
1621	} else {	1586	else
1622	free_object (op);	1587	{
		1588	op->destroy ();
1623	return NULL;	1589	return 0;
1624	}	1590	}
1625	}	1591	}
1626		1592
1627	/*	1593	/*
1628	* add_weight(object, weight) adds the specified weight to an object,	1594	* add_weight(object, weight) adds the specified weight to an object,
1629	* and also updates how much the environment(s) is/are carrying.	1595	* and also updates how much the environment(s) is/are carrying.
1630	*/	1596	*/
1631		1597
		1598	void
1632	void add_weight (object *op, signed long weight) {	1599	add_weight (object *op, signed long weight)
		1600	{
1633	while (op!=NULL) {	1601	while (op != NULL)
		1602	{
1634	if (op->type == CONTAINER) {	1603	if (op->type == CONTAINER)
1635	weight=(signed long)(weight*(100-op->stats.Str)/100);	1604	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1636	}	1605
1637	op->carrying+=weight;	1606	op->carrying += weight;
1638	op=op->env;	1607	op = op->env;
1639	}	1608	}
1640	}	1609	}
1641		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
1642	/*	1631	/*
1643	* insert_ob_in_ob(op,environment):	1632	* env->insert (op)
1644	* This function inserts the object op in the linked list	1633	* This function inserts the object op in the linked list
1645	* inside the object environment.	1634	* inside the object environment.
1646	*	1635	*
1647	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1648	* the inventory at the last position or next to other objects of the same
1649	* type.
1650	* Frank: Now sorted by type, archetype and magic!
1651	*
1652	* 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
1653	* be != op, if items are merged. -Tero	1637	* be != op, if items are merged. -Tero
1654	*/	1638	*/
1655		1639
1656	object *insert_ob_in_ob(object *op,object *where) {	1640	object *
		1641	object::insert (object *op)
		1642	{
1657	object *tmp, *otmp;	1643	object *tmp, *otmp;
1658		1644
1659	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1645	if (!QUERY_FLAG (op, FLAG_REMOVED))
1660	dump_object(op);	1646	op->remove ();
1661	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1647
1662	return op;
1663	}
1664	if(where==NULL) {
1665	dump_object(op);
1666	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1667	return op;
1668	}
1669	if (where->head) {
1670	LOG(llevDebug,
1671	"Warning: Tried to insert object wrong part of multipart object.\n");
1672	where = where->head;
1673	}
1674	if (op->more) {	1648	if (op->more)
		1649	{
1675	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);
1676	&op->name, op->count);
1677	return op;	1651	return op;
1678	}	1652	}
		1653
1679	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1654	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1680	CLEAR_FLAG(op, FLAG_REMOVED);	1655	CLEAR_FLAG (op, FLAG_REMOVED);
1681	if(op->nrof) {	1656	if (op->nrof)
		1657	{
1682	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1658	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1683	if ( CAN_MERGE(tmp,op) ) {	1659	if (object::can_merge (tmp, op))
		1660	{
1684	/* return the original object and remove inserted object	1661	/* return the original object and remove inserted object
1685	(client needs the original object) */	1662	(client needs the original object) */
1686	tmp->nrof += op->nrof;	1663	tmp->nrof += op->nrof;
1687	/* Weight handling gets pretty funky. Since we are adding to	1664	/* Weight handling gets pretty funky. Since we are adding to
1688	* tmp->nrof, we need to increase the weight.	1665	* tmp->nrof, we need to increase the weight.
1689	*/	1666	*/
1690	add_weight (where, op->weight*op->nrof);	1667	add_weight (this, op->weight * op->nrof);
1691	SET_FLAG(op, FLAG_REMOVED);	1668	SET_FLAG (op, FLAG_REMOVED);
1692	free_object(op); /* free the inserted object */	1669	op->destroy (); /* free the inserted object */
1693	op = tmp;	1670	op = tmp;
1694	remove_ob (op); /* and fix old object's links */	1671	op->remove (); /* and fix old object's links */
1695	CLEAR_FLAG(op, FLAG_REMOVED);	1672	CLEAR_FLAG (op, FLAG_REMOVED);
1696	break;	1673	break;
1697	}	1674	}
1698		1675
1699	/* I assume combined objects have no inventory	1676	/* I assume combined objects have no inventory
1700	* We add the weight - this object could have just been removed	1677	* We add the weight - this object could have just been removed
1701	* (if it was possible to merge). calling remove_ob will subtract	1678	* (if it was possible to merge). calling remove_ob will subtract
1702	* 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
1703	* the linking below	1680	* the linking below
1704	*/	1681	*/
1705	add_weight (where, op->weight*op->nrof);	1682	add_weight (this, op->weight * op->nrof);
		1683	}
1706	} else	1684	else
1707	add_weight (where, (op->weight+op->carrying));	1685	add_weight (this, (op->weight + op->carrying));
1708		1686
1709	otmp=is_player_inv(where);	1687	otmp = this->in_player ();
1710	if (otmp&&otmp->contr!=NULL) {	1688	if (otmp && otmp->contr)
1711	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1689	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1712	fix_player(otmp);	1690	otmp->update_stats ();
1713	}
1714		1691
1715	op->map=NULL;	1692	op->map = 0;
1716	op->env=where;	1693	op->env = this;
1717	op->above=NULL;	1694	op->above = 0;
1718	op->below=NULL;	1695	op->below = 0;
1719	op->x=0,op->y=0;	1696	op->x = 0, op->y = 0;
1720		1697
1721	/* 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 */
1722	if((op->glow_radius!=0)&&where->map)	1699	if ((op->glow_radius != 0) && map)
1723	{	1700	{
1724	#ifdef DEBUG_LIGHTS	1701	#ifdef DEBUG_LIGHTS
1725	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);
1726	op->name);
1727	#endif /* DEBUG_LIGHTS */	1703	#endif /* DEBUG_LIGHTS */
1728	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);
1729	}	1706	}
1730		1707
1731	/* 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.
1732	* It sure simplifies this function...	1709	* It sure simplifies this function...
1733	*/	1710	*/
1734	if (where->inv==NULL)	1711	if (!inv)
1735	where->inv=op;	1712	inv = op;
1736	else {	1713	else
		1714	{
1737	op->below = where->inv;	1715	op->below = inv;
1738	op->below->above = op;	1716	op->below->above = op;
1739	where->inv = op;	1717	inv = op;
1740	}	1718	}
		1719
		1720	INVOKE_OBJECT (INSERT, this);
		1721
1741	return op;	1722	return op;
1742	}	1723	}
1743		1724
1744	/*	1725	/*
1745	* Checks if any objects has a move_type that matches objects	1726	* Checks if any objects has a move_type that matches objects
…		…
1759	*	1740	*
1760	* 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
1761	* 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
1762	* on top.	1743	* on top.
1763	*/	1744	*/
1764		1745	int
1765	int check_move_on (object *op, object *originator)	1746	check_move_on (object *op, object *originator)
1766	{	1747	{
1767	object *tmp;	1748	object *tmp;
1768	tag_t tag;
1769	mapstruct *m=op->map;	1749	maptile *m = op->map;
1770	int x=op->x, y=op->y;	1750	int x = op->x, y = op->y;
		1751
1771	MoveType move_on, move_slow, move_block;	1752	MoveType move_on, move_slow, move_block;
1772		1753
1773	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1754	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1774	return 0;	1755	return 0;
1775		1756
1776	tag = op->count;
1777
1778	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);
1779	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);
1780	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);
1781		1760
1782	/* 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,
1783	* 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
1784	* 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
1785	* as walking.	1764	* as walking.
1786	*/	1765	*/
1787	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))
1788	return 0;	1767	return 0;
1789		1768
1790	/* This is basically inverse logic of that below - basically,	1769	/* This is basically inverse logic of that below - basically,
1791	* 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,
1792	* 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
1793	* blocked. Logic on this seems confusing, but does seem correct.	1772	* blocked. Logic on this seems confusing, but does seem correct.
1794	*/	1773	*/
1795	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)
1796	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1775	return 0;
1797		1776
1798	/* The objects have to be checked from top to bottom.	1777	/* The objects have to be checked from top to bottom.
1799	* Hence, we first go to the top:	1778	* Hence, we first go to the top:
1800	*/	1779	*/
1801		1780
1802	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)
1803	tmp->above!=NULL; tmp=tmp->above) {	1782	{
1804	/* Trim the search when we find the first other spell effect	1783	/* Trim the search when we find the first other spell effect
1805	* 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,
1806	* we don't need to check all of them.	1785	* we don't need to check all of them.
1807	*/	1786	*/
1808	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)
1809	}	1792	{
1810	for(;tmp!=NULL; tmp=tmp->below) {	1793	if (tmp == op)
1811	if (tmp == op) continue; /* Can't apply yourself */	1794	continue; /* Can't apply yourself */
1812		1795
1813	/* 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.
1814	* Second check makes sure that the movement types not being slowed	1797	* Second check makes sure that the movement types not being slowed
1815	* (~slow_move) is not blocked on this space - just because the	1798	* (~slow_move) is not blocked on this space - just because the
1816	* 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
1817	* 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.
1818	*/	1801	*/
1819	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1802	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1803	{
1820	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1804	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1821	((op->move_type & tmp->move_slow) &&
1822	(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	{
1823		1807
1824	float diff;	1808	float
1825
1826	diff = tmp->move_slow_penalty*FABS(op->speed);	1809	diff = tmp->move_slow_penalty * FABS (op->speed);
		1810
1827	if (op->type == PLAYER) {	1811	if (op->type == PLAYER)
1828	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)) ||
1829	(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)))
1830	diff /= 4.0;	1814	diff /= 4.0;
1831	}	1815
1832	}
1833	op->speed_left -= diff;	1816	op->speed_left -= diff;
1834	}	1817	}
1835	}	1818	}
1836		1819
1837	/* Basically same logic as above, except now for actual apply. */	1820	/* Basically same logic as above, except now for actual apply. */
1838	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1821	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1839	((op->move_type & tmp->move_on) &&
1840	(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))
1841		1823	{
1842	move_apply(tmp, op, originator);	1824	move_apply (tmp, op, originator);
		1825
1843	if (was_destroyed (op, tag))	1826	if (op->destroyed ())
1844	return 1;	1827	return 1;
1845		1828
1846	/* what the person/creature stepped onto has moved the object	1829	/* what the person/creature stepped onto has moved the object
1847	* someplace new. Don't process any further - if we did,	1830	* someplace new. Don't process any further - if we did,
1848	* have a feeling strange problems would result.	1831	* have a feeling strange problems would result.
1849	*/	1832	*/
1850	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;
1851	}	1835	}
1852	}	1836	}
		1837
1853	return 0;	1838	return 0;
1854	}	1839	}
1855		1840
1856	/*	1841	/*
1857	* present_arch(arch, map, x, y) searches for any objects with	1842	* present_arch(arch, map, x, y) searches for any objects with
1858	* a matching archetype at the given map and coordinates.	1843	* a matching archetype at the given map and coordinates.
1859	* The first matching object is returned, or NULL if none.	1844	* The first matching object is returned, or NULL if none.
1860	*/	1845	*/
1861		1846	object *
1862	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1847	present_arch (const archetype *at, maptile *m, int x, int y)
1863	object *tmp;	1848	{
1864	if(m==NULL || out_of_map(m,x,y)) {	1849	if (m == NULL || out_of_map (m, x, y))
		1850	{
1865	LOG(llevError,"Present_arch called outside map.\n");	1851	LOG (llevError, "Present_arch called outside map.\n");
1866	return NULL;	1852	return NULL;
1867	}	1853	}
		1854
1868	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)
1869	if(tmp->arch == at)	1856	if (tmp->arch == at)
1870	return tmp;	1857	return tmp;
		1858
1871	return NULL;	1859	return NULL;
1872	}	1860	}
1873		1861
1874	/*	1862	/*
1875	* present(type, map, x, y) searches for any objects with	1863	* present(type, map, x, y) searches for any objects with
1876	* a matching type variable at the given map and coordinates.	1864	* a matching type variable at the given map and coordinates.
1877	* The first matching object is returned, or NULL if none.	1865	* The first matching object is returned, or NULL if none.
1878	*/	1866	*/
1879		1867	object *
1880	object *present(unsigned char type,mapstruct *m, int x,int y) {	1868	present (unsigned char type, maptile *m, int x, int y)
1881	object *tmp;	1869	{
1882	if(out_of_map(m,x,y)) {	1870	if (out_of_map (m, x, y))
		1871	{
1883	LOG(llevError,"Present called outside map.\n");	1872	LOG (llevError, "Present called outside map.\n");
1884	return NULL;	1873	return NULL;
1885	}	1874	}
		1875
1886	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)
1887	if(tmp->type==type)	1877	if (tmp->type == type)
1888	return tmp;	1878	return tmp;
		1879
1889	return NULL;	1880	return NULL;
1890	}	1881	}
1891		1882
1892	/*	1883	/*
1893	* present_in_ob(type, object) searches for any objects with	1884	* present_in_ob(type, object) searches for any objects with
1894	* a matching type variable in the inventory of the given object.	1885	* a matching type variable in the inventory of the given object.
1895	* The first matching object is returned, or NULL if none.	1886	* The first matching object is returned, or NULL if none.
1896	*/	1887	*/
1897		1888	object *
1898	object *present_in_ob(unsigned char type, const object *op) {	1889	present_in_ob (unsigned char type, const object *op)
1899	object *tmp;	1890	{
1900	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1891	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1901	if(tmp->type==type)	1892	if (tmp->type == type)
1902	return tmp;	1893	return tmp;
		1894
1903	return NULL;	1895	return NULL;
1904	}	1896	}
1905		1897
1906	/*	1898	/*
1907	* present_in_ob (type, str, object) searches for any objects with	1899	* present_in_ob (type, str, object) searches for any objects with
…		…
1915	* 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
1916	* 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
1917	* 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
1918	* to be unique.	1910	* to be unique.
1919	*/	1911	*/
1920		1912	object *
1921	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)
1922	object *tmp;	1914	{
1923
1924	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1915	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1925	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1916	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1926	return tmp;	1917	return tmp;
1927	}	1918
1928	return NULL;	1919	return 0;
1929	}	1920	}
1930		1921
1931	/*	1922	/*
1932	* present_arch_in_ob(archetype, object) searches for any objects with	1923	* present_arch_in_ob(archetype, object) searches for any objects with
1933	* a matching archetype in the inventory of the given object.	1924	* a matching archetype in the inventory of the given object.
1934	* The first matching object is returned, or NULL if none.	1925	* The first matching object is returned, or NULL if none.
1935	*/	1926	*/
1936		1927	object *
1937	object *present_arch_in_ob(const archetype *at, const object *op) {	1928	present_arch_in_ob (const archetype *at, const object *op)
1938	object *tmp;	1929	{
1939	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1930	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1940	if( tmp->arch == at)	1931	if (tmp->arch == at)
1941	return tmp;	1932	return tmp;
		1933
1942	return NULL;	1934	return NULL;
1943	}	1935	}
1944		1936
1945	/*	1937	/*
1946	* activate recursively a flag on an object inventory	1938	* activate recursively a flag on an object inventory
1947	*/	1939	*/
		1940	void
1948	void flag_inv(object*op, int flag){	1941	flag_inv (object *op, int flag)
1949	object *tmp;	1942	{
1950	if(op->inv)	1943	if (op->inv)
1951	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1944	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1945	{
1952	SET_FLAG(tmp, flag);	1946	SET_FLAG (tmp, flag);
1953	flag_inv(tmp,flag);	1947	flag_inv (tmp, flag);
1954	}	1948	}
		1949	}
		1950
1955	}/*	1951	/*
1956	* desactivate recursively a flag on an object inventory	1952	* deactivate recursively a flag on an object inventory
1957	*/	1953	*/
		1954	void
1958	void unflag_inv(object*op, int flag){	1955	unflag_inv (object *op, int flag)
1959	object *tmp;	1956	{
1960	if(op->inv)	1957	if (op->inv)
1961	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1958	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1959	{
1962	CLEAR_FLAG(tmp, flag);	1960	CLEAR_FLAG (tmp, flag);
1963	unflag_inv(tmp,flag);	1961	unflag_inv (tmp, flag);
1964	}	1962	}
1965	}	1963	}
1966		1964
1967	/*	1965	/*
1968	* 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
1969	* all it's inventory (recursively).	1967	* all it's inventory (recursively).
1970	* 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
1971	* 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.
1972	*/	1970	*/
1973		1971	void
1974	void set_cheat(object *op) {	1972	set_cheat (object *op)
		1973	{
1975	SET_FLAG(op, FLAG_WAS_WIZ);	1974	SET_FLAG (op, FLAG_WAS_WIZ);
1976	flag_inv(op, FLAG_WAS_WIZ);	1975	flag_inv (op, FLAG_WAS_WIZ);
1977	}	1976	}
1978		1977
1979	/*	1978	/*
1980	* 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
1981	* 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
…		…
1995	* 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
1996	* 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
1997	* 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
1998	* customized, changed states, etc.	1997	* customized, changed states, etc.
1999	*/	1998	*/
2000		1999	int
2001	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	{
2002	int i,index=0, flag;	2002	int index = 0, flag;
2003	static int altern[SIZEOFFREE];	2003	int altern[SIZEOFFREE];
2004		2004
2005	for(i=start;i<stop;i++) {	2005	for (int i = start; i < stop; i++)
		2006	{
2006	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]);
2007	if(!flag)	2008	if (!flag)
2008	altern[index++]=i;	2009	altern [index++] = i;
2009		2010
2010	/* 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.
2011	* 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.
2012	* 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 -
2013	* 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
2014	* 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
2015	* to only the spaces immediately surrounding the target area, and	2016	* to only the spaces immediately surrounding the target area, and
2016	* won't look 2 spaces south of the target space.	2017	* won't look 2 spaces south of the target space.
2017	*/	2018	*/
2018	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2019	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2019	stop=maxfree[i];	2020	stop = maxfree[i];
2020	}	2021	}
2021	if(!index) return -1;	2022
		2023	if (!index)
		2024	return -1;
		2025
2022	return altern[RANDOM()%index];	2026	return altern[RANDOM () % index];
2023	}	2027	}
2024		2028
2025	/*	2029	/*
2026	* find_first_free_spot(archetype, mapstruct, x, y) works like	2030	* find_first_free_spot(archetype, maptile, x, y) works like
2027	* find_free_spot(), but it will search max number of squares.	2031	* find_free_spot(), but it will search max number of squares.
2028	* 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.
2029	* 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.
2030	*/	2034	*/
2031		2035	int
2032	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)
2033	int i;	2037	{
2034	for(i=0;i<SIZEOFFREE;i++) {	2038	for (int i = 0; i < SIZEOFFREE; i++)
2035	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]))
2036	return i;	2040	return i;
2037	}	2041
2038	return -1;	2042	return -1;
2039	}	2043	}
2040		2044
2041	/*	2045	/*
2042	* The function permute(arr, begin, end) randomly reorders the array	2046	* The function permute(arr, begin, end) randomly reorders the array
2043	* arr[begin..end-1].	2047	* arr[begin..end-1].
		2048	* now uses a fisher-yates shuffle, old permute was broken
2044	*/	2049	*/
		2050	static void
2045	static void permute(int *arr, int begin, int end)	2051	permute (int *arr, int begin, int end)
2046	{	2052	{
2047	int i, j, tmp, len;	2053	arr += begin;
		2054	end -= begin;
2048		2055
2049	len = end-begin;	2056	while (--end)
2050	for(i = begin; i < end; i++)	2057	swap (arr [end], arr [RANDOM () % (end + 1)]);
2051	{
2052	j = begin+RANDOM()%len;
2053
2054	tmp = arr[i];
2055	arr[i] = arr[j];
2056	arr[j] = tmp;
2057	}
2058	}	2058	}
2059		2059
2060	/* new function to make monster searching more efficient, and effective!	2060	/* new function to make monster searching more efficient, and effective!
2061	* This basically returns a randomized array (in the passed pointer) of	2061	* This basically returns a randomized array (in the passed pointer) of
2062	* 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
2063	* 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
2064	* 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
2065	* 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.
2066	*/	2066	*/
		2067	void
2067	void get_search_arr(int *search_arr)	2068	get_search_arr (int *search_arr)
2068	{	2069	{
2069	int i;	2070	int i;
2070		2071
2071	for(i = 0; i < SIZEOFFREE; i++)	2072	for (i = 0; i < SIZEOFFREE; i++)
2072	{
2073	search_arr[i] = i;	2073	search_arr[i] = i;
2074	}
2075		2074
2076	permute(search_arr, 1, SIZEOFFREE1+1);	2075	permute (search_arr, 1, SIZEOFFREE1 + 1);
2077	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2076	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2078	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2077	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2079	}	2078	}
2080		2079
2081	/*	2080	/*
2082	* 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
2083	* given map at the given coordinates for live objects.	2082	* given map at the given coordinates for live objects.
…		…
2088	* Perhaps incorrectly, but I'm making the assumption that exclude	2087	* Perhaps incorrectly, but I'm making the assumption that exclude
2089	* 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
2090	* 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
2091	* there is capable of.	2090	* there is capable of.
2092	*/	2091	*/
2093		2092	int
2094	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2093	find_dir (maptile *m, int x, int y, object *exclude)
		2094	{
2095	int i,max=SIZEOFFREE, mflags;	2095	int i, max = SIZEOFFREE, mflags;
		2096
2096	sint16 nx, ny;	2097	sint16 nx, ny;
2097	object *tmp;	2098	object *tmp;
2098	mapstruct *mp;	2099	maptile *mp;
		2100
2099	MoveType blocked, move_type;	2101	MoveType blocked, move_type;
2100		2102
2101	if (exclude && exclude->head) {	2103	if (exclude && exclude->head)
		2104	{
2102	exclude = exclude->head;	2105	exclude = exclude->head;
2103	move_type = exclude->move_type;	2106	move_type = exclude->move_type;
2104	} else {	2107	}
		2108	else
		2109	{
2105	/* 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. */
2106	move_type=MOVE_ALL;	2111	move_type = MOVE_ALL;
		2112	}
		2113
		2114	for (i = 1; i < max; i++)
2107	}	2115	{
2108
2109	for(i=1;i<max;i++) {
2110	mp = m;	2116	mp = m;
2111	nx = x + freearr_x[i];	2117	nx = x + freearr_x[i];
2112	ny = y + freearr_y[i];	2118	ny = y + freearr_y[i];
2113		2119
2114	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2120	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2121
2115	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)
2116	max = maxfree[i];	2131	max = maxfree[i];
2117	} else {
2118	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2119
2120	if ((move_type & blocked) == move_type) {
2121	max=maxfree[i];
2122	} else if (mflags & P_IS_ALIVE) {	2132	else if (mflags & P_IS_ALIVE)
2123	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2133	{
		2134	for (tmp = ms.bot; tmp; tmp = tmp->above)
2124	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2135	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2125	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2136	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2126	break;	2137	break;
2127	}	2138
2128	}
2129	if(tmp) {	2139	if (tmp)
2130	return freedir[i];	2140	return freedir[i];
2131	}
2132	}	2141	}
2133	}	2142	}
2134	}	2143	}
		2144
2135	return 0;	2145	return 0;
2136	}	2146	}
2137		2147
2138	/*	2148	/*
2139	* distance(object 1, object 2) will return the square of the	2149	* distance(object 1, object 2) will return the square of the
2140	* distance between the two given objects.	2150	* distance between the two given objects.
2141	*/	2151	*/
2142		2152	int
2143	int distance(const object *ob1, const object *ob2) {	2153	distance (const object *ob1, const object *ob2)
2144	int i;	2154	{
2145	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);
2146	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2147	return i;
2148	}	2156	}
2149		2157
2150	/*	2158	/*
2151	* 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
2152	* 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
2153	* object, needs to travel toward it.	2161	* object, needs to travel toward it.
2154	*/	2162	*/
2155		2163	int
2156	int find_dir_2(int x, int y) {	2164	find_dir_2 (int x, int y)
		2165	{
2157	int q;	2166	int q;
2158		2167
2159	if(y)	2168	if (y)
2160	q=x*100/y;	2169	q = x * 100 / y;
2161	else if (x)	2170	else if (x)
2162	q= -300*x;	2171	q = -300 * x;
2163	else	2172	else
2164	return 0;	2173	return 0;
2165		2174
2166	if(y>0) {	2175	if (y > 0)
		2176	{
2167	if(q < -242)	2177	if (q < -242)
2168	return 3 ;	2178	return 3;
2169	if (q < -41)	2179	if (q < -41)
2170	return 2 ;	2180	return 2;
2171	if (q < 41)	2181	if (q < 41)
2172	return 1 ;	2182	return 1;
2173	if (q < 242)	2183	if (q < 242)
2174	return 8 ;	2184	return 8;
2175	return 7 ;	2185	return 7;
2176	}	2186	}
2177		2187
2178	if (q < -242)	2188	if (q < -242)
2179	return 7 ;	2189	return 7;
2180	if (q < -41)	2190	if (q < -41)
2181	return 6 ;	2191	return 6;
2182	if (q < 41)	2192	if (q < 41)
2183	return 5 ;	2193	return 5;
2184	if (q < 242)	2194	if (q < 242)
2185	return 4 ;	2195	return 4;
2186		2196
2187	return 3 ;	2197	return 3;
2188	}	2198	}
2189		2199
2190	/*	2200	/*
2191	* absdir(int): Returns a number between 1 and 8, which represent	2201	* absdir(int): Returns a number between 1 and 8, which represent
2192	* the "absolute" direction of a number (it actually takes care of	2202	* the "absolute" direction of a number (it actually takes care of
2193	* "overflow" in previous calculations of a direction).	2203	* "overflow" in previous calculations of a direction).
2194	*/	2204	*/
2195		2205
		2206	int
2196	int absdir(int d) {	2207	absdir (int d)
2197	while(d<1) d+=8;	2208	{
2198	while(d>8) d-=8;	2209	while (d < 1)
		2210	d += 8;
		2211
		2212	while (d > 8)
		2213	d -= 8;
		2214
2199	return d;	2215	return d;
2200	}	2216	}
2201		2217
2202	/*	2218	/*
2203	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2219	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2204	* between two directions (which are expected to be absolute (see absdir())	2220	* between two directions (which are expected to be absolute (see absdir())
2205	*/	2221	*/
2206		2222
		2223	int
2207	int dirdiff(int dir1, int dir2) {	2224	dirdiff (int dir1, int dir2)
		2225	{
2208	int d;	2226	int d;
		2227
2209	d = abs(dir1 - dir2);	2228	d = abs (dir1 - dir2);
2210	if(d>4)	2229	if (d > 4)
2211	d = 8 - d;	2230	d = 8 - d;
		2231
2212	return d;	2232	return d;
2213	}	2233	}
2214		2234
2215	/* peterm:	2235	/* peterm:
2216	* 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.
…		…
2219	* 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
2220	* 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.
2221	* 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
2222	* functions.	2242	* functions.
2223	*/	2243	*/
2224
2225	int reduction_dir[SIZEOFFREE][3] = {	2244	int reduction_dir[SIZEOFFREE][3] = {
2226	{0,0,0}, /* 0 */	2245	{0, 0, 0}, /* 0 */
2227	{0,0,0}, /* 1 */	2246	{0, 0, 0}, /* 1 */
2228	{0,0,0}, /* 2 */	2247	{0, 0, 0}, /* 2 */
2229	{0,0,0}, /* 3 */	2248	{0, 0, 0}, /* 3 */
2230	{0,0,0}, /* 4 */	2249	{0, 0, 0}, /* 4 */
2231	{0,0,0}, /* 5 */	2250	{0, 0, 0}, /* 5 */
2232	{0,0,0}, /* 6 */	2251	{0, 0, 0}, /* 6 */
2233	{0,0,0}, /* 7 */	2252	{0, 0, 0}, /* 7 */
2234	{0,0,0}, /* 8 */	2253	{0, 0, 0}, /* 8 */
2235	{8,1,2}, /* 9 */	2254	{8, 1, 2}, /* 9 */
2236	{1,2,-1}, /* 10 */	2255	{1, 2, -1}, /* 10 */
2237	{2,10,12}, /* 11 */	2256	{2, 10, 12}, /* 11 */
2238	{2,3,-1}, /* 12 */	2257	{2, 3, -1}, /* 12 */
2239	{2,3,4}, /* 13 */	2258	{2, 3, 4}, /* 13 */
2240	{3,4,-1}, /* 14 */	2259	{3, 4, -1}, /* 14 */
2241	{4,14,16}, /* 15 */	2260	{4, 14, 16}, /* 15 */
2242	{5,4,-1}, /* 16 */	2261	{5, 4, -1}, /* 16 */
2243	{4,5,6}, /* 17 */	2262	{4, 5, 6}, /* 17 */
2244	{6,5,-1}, /* 18 */	2263	{6, 5, -1}, /* 18 */
2245	{6,20,18}, /* 19 */	2264	{6, 20, 18}, /* 19 */
2246	{7,6,-1}, /* 20 */	2265	{7, 6, -1}, /* 20 */
2247	{6,7,8}, /* 21 */	2266	{6, 7, 8}, /* 21 */
2248	{7,8,-1}, /* 22 */	2267	{7, 8, -1}, /* 22 */
2249	{8,22,24}, /* 23 */	2268	{8, 22, 24}, /* 23 */
2250	{8,1,-1}, /* 24 */	2269	{8, 1, -1}, /* 24 */
2251	{24,9,10}, /* 25 */	2270	{24, 9, 10}, /* 25 */
2252	{9,10,-1}, /* 26 */	2271	{9, 10, -1}, /* 26 */
2253	{10,11,-1}, /* 27 */	2272	{10, 11, -1}, /* 27 */
2254	{27,11,29}, /* 28 */	2273	{27, 11, 29}, /* 28 */
2255	{11,12,-1}, /* 29 */	2274	{11, 12, -1}, /* 29 */
2256	{12,13,-1}, /* 30 */	2275	{12, 13, -1}, /* 30 */
2257	{12,13,14}, /* 31 */	2276	{12, 13, 14}, /* 31 */
2258	{13,14,-1}, /* 32 */	2277	{13, 14, -1}, /* 32 */
2259	{14,15,-1}, /* 33 */	2278	{14, 15, -1}, /* 33 */
2260	{33,15,35}, /* 34 */	2279	{33, 15, 35}, /* 34 */
2261	{16,15,-1}, /* 35 */	2280	{16, 15, -1}, /* 35 */
2262	{17,16,-1}, /* 36 */	2281	{17, 16, -1}, /* 36 */
2263	{18,17,16}, /* 37 */	2282	{18, 17, 16}, /* 37 */
2264	{18,17,-1}, /* 38 */	2283	{18, 17, -1}, /* 38 */
2265	{18,19,-1}, /* 39 */	2284	{18, 19, -1}, /* 39 */
2266	{41,19,39}, /* 40 */	2285	{41, 19, 39}, /* 40 */
2267	{19,20,-1}, /* 41 */	2286	{19, 20, -1}, /* 41 */
2268	{20,21,-1}, /* 42 */	2287	{20, 21, -1}, /* 42 */
2269	{20,21,22}, /* 43 */	2288	{20, 21, 22}, /* 43 */
2270	{21,22,-1}, /* 44 */	2289	{21, 22, -1}, /* 44 */
2271	{23,22,-1}, /* 45 */	2290	{23, 22, -1}, /* 45 */
2272	{45,47,23}, /* 46 */	2291	{45, 47, 23}, /* 46 */
2273	{23,24,-1}, /* 47 */	2292	{23, 24, -1}, /* 47 */
2274	{24,9,-1}}; /* 48 */	2293	{24, 9, -1}
		2294	}; /* 48 */
2275		2295
2276	/* Recursive routine to step back and see if we can	2296	/* Recursive routine to step back and see if we can
2277	* find a path to that monster that we found. If not,	2297	* find a path to that monster that we found. If not,
2278	* we don't bother going toward it. Returns 1 if we	2298	* we don't bother going toward it. Returns 1 if we
2279	* can see a direct way to get it	2299	* can see a direct way to get it
2280	* Modified to be map tile aware -.MSW	2300	* Modified to be map tile aware -.MSW
2281	*/	2301	*/
2282		2302	int
2283
2284	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	{
2285	sint16 dx, dy;	2305	sint16 dx, dy;
2286	int mflags;	2306	int mflags;
2287		2307
		2308	if (dir < 0)
2288	if(dir<0) return 0; /* exit condition: invalid direction */	2309	return 0; /* exit condition: invalid direction */
2289		2310
2290	dx = x + freearr_x[dir];	2311	dx = x + freearr_x[dir];
2291	dy = y + freearr_y[dir];	2312	dy = y + freearr_y[dir];
2292		2313
2293	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2314	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2294		2315
2295	/* This functional arguably was incorrect before - it was	2316	/* This functional arguably was incorrect before - it was
2296	* checking for P_WALL - that was basically seeing if	2317	* checking for P_WALL - that was basically seeing if
2297	* we could move to the monster - this is being more	2318	* we could move to the monster - this is being more
2298	* 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
2299	* 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
2300	* at least its move type.	2321	* at least its move type.
2301	*/	2322	*/
2302	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2323	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2324	return 0;
2303		2325
2304	/* yes, can see. */	2326	/* yes, can see. */
2305	if(dir < 9) return 1;	2327	if (dir < 9)
		2328	return 1;
		2329
2306	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2330	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2307	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2331	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2308	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2332	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2309	}	2333	}
2310		2334
2311
2312
2313	/*	2335	/*
2314	* 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
2315	* picked up by the picker. Returnes 1 if it can be	2337	* picked up by the picker. Returnes 1 if it can be
2316	* picked up, otherwise 0.	2338	* picked up, otherwise 0.
2317	*	2339	*
…		…
2319	* core dumps if they do.	2341	* core dumps if they do.
2320	*	2342	*
2321	* 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)
2322	*/	2344	*/
2323		2345
		2346	int
2324	int can_pick(const object *who, const object *item) {	2347	can_pick (const object *who, const object *item)
		2348	{
2325	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2349	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2326	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2350	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2327	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2351	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2328	(who->type==PLAYER||item->weight<who->weight/3));
2329	}	2352	}
2330
2331		2353
2332	/*	2354	/*
2333	* create clone from object to another	2355	* create clone from object to another
2334	*/	2356	*/
		2357	object *
2335	object *object_create_clone (object *asrc) {	2358	object_create_clone (object *asrc)
		2359	{
2336	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2360	object *dst = 0, *tmp, *src, *part, *prev, *item;
2337		2361
2338	if(!asrc) return NULL;	2362	if (!asrc)
		2363	return 0;
		2364
2339	src = asrc;	2365	src = asrc;
2340	if(src->head)	2366	if (src->head)
2341	src = src->head;	2367	src = src->head;
2342		2368
2343	prev = NULL;	2369	prev = 0;
2344	for(part = src; part; part = part->more) {	2370	for (part = src; part; part = part->more)
2345	tmp = get_object();	2371	{
2346	copy_object(part,tmp);	2372	tmp = part->clone ();
2347	tmp->x -= src->x;	2373	tmp->x -= src->x;
2348	tmp->y -= src->y;	2374	tmp->y -= src->y;
		2375
2349	if(!part->head) {	2376	if (!part->head)
		2377	{
2350	dst = tmp;	2378	dst = tmp;
2351	tmp->head = NULL;	2379	tmp->head = 0;
		2380	}
2352	} else {	2381	else
2353	tmp->head = dst;	2382	tmp->head = dst;
2354	}	2383
2355	tmp->more = NULL;	2384	tmp->more = 0;
		2385
2356	if(prev)	2386	if (prev)
2357	prev->more = tmp;	2387	prev->more = tmp;
		2388
2358	prev = tmp;	2389	prev = tmp;
2359	}	2390	}
2360	/*** copy inventory ***/	2391
2361	for(item = src->inv; item; item = item->below) {	2392	for (item = src->inv; item; item = item->below)
2362	(void) insert_ob_in_ob(object_create_clone(item),dst);	2393	insert_ob_in_ob (object_create_clone (item), dst);
2363	}
2364		2394
2365	return dst;	2395	return dst;
2366	}
2367
2368	/* return true if the object was destroyed, 0 otherwise */
2369	int was_destroyed (const object *op, tag_t old_tag)
2370	{
2371	/* checking for FLAG_FREED isn't necessary, but makes this function more
2372	* robust */
2373	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2374	}	2396	}
2375		2397
2376	/* GROS - Creates an object using a string representing its content. */	2398	/* GROS - Creates an object using a string representing its content. */
2377	/* 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 */
2378	/* 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, */
2379	/* 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. */
2380	/* 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. */
2381	/* Also remember that multiparts objects are not supported for now. */	2403	/* Also remember that multiparts objects are not supported for now. */
2382		2404	object *
2383	object* load_object_str(const char *obstr)	2405	load_object_str (const char *obstr)
2384	{	2406	{
2385	object *op;	2407	object *op;
2386	char filename[MAX_BUF];	2408	char filename[MAX_BUF];
		2409
2387	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2410	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2388		2411
2389	FILE *tempfile=fopen(filename,"w");	2412	FILE *tempfile = fopen (filename, "w");
		2413
2390	if (tempfile == NULL)	2414	if (tempfile == NULL)
2391	{	2415	{
2392	LOG(llevError,"Error - Unable to access load object temp file\n");	2416	LOG (llevError, "Error - Unable to access load object temp file\n");
2393	return NULL;	2417	return NULL;
2394	};	2418	}
		2419
2395	fprintf(tempfile,obstr);	2420	fprintf (tempfile, obstr);
2396	fclose(tempfile);	2421	fclose (tempfile);
2397		2422
2398	op=get_object();	2423	op = object::create ();
2399		2424
2400	object_thawer thawer (filename);	2425	object_thawer thawer (filename);
2401		2426
2402	if (thawer)	2427	if (thawer)
2403	load_object(thawer,op,0);	2428	load_object (thawer, op, 0);
2404		2429
2405	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2430	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2406	CLEAR_FLAG(op,FLAG_REMOVED);	2431	CLEAR_FLAG (op, FLAG_REMOVED);
2407		2432
2408	return op;	2433	return op;
2409	}	2434	}
2410		2435
2411	/* This returns the first object in who's inventory that	2436	/* This returns the first object in who's inventory that
2412	* has the same type and subtype match.	2437	* has the same type and subtype match.
2413	* returns NULL if no match.	2438	* returns NULL if no match.
2414	*/	2439	*/
		2440	object *
2415	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)
2416	{	2442	{
2417	object *tmp;
2418
2419	for (tmp=who->inv; tmp; tmp=tmp->below)	2443	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2420	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2444	if (tmp->type == type && tmp->subtype == subtype)
		2445	return tmp;
2421		2446
2422	return NULL;	2447	return 0;
2423	}	2448	}
2424		2449
2425	/* 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,
2426	* otherwise return NULL.	2451	* otherwise return NULL.
2427	*	2452	*
2428	* 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
2429	* do the desired thing.	2454	* do the desired thing.
2430	*/	2455	*/
		2456	key_value *
2431	key_value * get_ob_key_link(const object * ob, const char * key) {	2457	get_ob_key_link (const object *ob, const char *key)
2432	key_value * link;	2458	{
2433
2434	for (link = ob->key_values; link != NULL; link = link->next) {	2459	for (key_value *link = ob->key_values; link; link = link->next)
2435	if (link->key == key) {	2460	if (link->key == key)
2436	return link;	2461	return link;
2437	}	2462
2438	}	2463	return 0;
2439		2464	}
2440	return NULL;
2441	}
2442		2465
2443	/*	2466	/*
2444	* 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.
2445	*	2468	*
2446	* The argument doesn't need to be a shared string.	2469	* The argument doesn't need to be a shared string.
2447	*	2470	*
2448	* The returned string is shared.	2471	* The returned string is shared.
2449	*/	2472	*/
		2473	const char *
2450	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	{
2451	key_value * link;	2476	key_value *link;
2452	const char * canonical_key;	2477	shstr_cmp canonical_key (key);
		2478
		2479	if (!canonical_key)
2453		2480	{
2454	canonical_key = shstr::find (key);
2455
2456	if (canonical_key == NULL) {
2457	/* 1. There being a field named key on any object	2481	/* 1. There being a field named key on any object
2458	* implies there'd be a shared string to find.	2482	* implies there'd be a shared string to find.
2459	* 2. Since there isn't, no object has this field.	2483	* 2. Since there isn't, no object has this field.
2460	* 3. Therefore, *this* object doesn't have this field.	2484	* 3. Therefore, *this* object doesn't have this field.
2461	*/	2485	*/
2462	return NULL;	2486	return 0;
2463	}	2487	}
2464		2488
2465	/* This is copied from get_ob_key_link() above -	2489	/* This is copied from get_ob_key_link() above -
2466	* only 4 lines, and saves the function call overhead.	2490	* only 4 lines, and saves the function call overhead.
2467	*/	2491	*/
2468	for (link = op->key_values; link != NULL; link = link->next) {	2492	for (link = op->key_values; link; link = link->next)
2469	if (link->key == canonical_key) {	2493	if (link->key == canonical_key)
2470	return link->value;	2494	return link->value;
2471	}	2495
2472	}	2496	return 0;
2473	return NULL;
2474	}	2497	}
2475		2498
2476		2499
2477	/*	2500	/*
2478	* Updates the canonical_key in op to value.	2501	* Updates the canonical_key in op to value.
…		…
2482	* 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
2483	* keys.	2506	* keys.
2484	*	2507	*
2485	* Returns TRUE on success.	2508	* Returns TRUE on success.
2486	*/	2509	*/
		2510	int
2487	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	{
2488	key_value * field = NULL, *last=NULL;	2513	key_value *field = NULL, *last = NULL;
2489		2514
2490	for (field=op->key_values; field != NULL; field=field->next) {	2515	for (field = op->key_values; field != NULL; field = field->next)
		2516	{
2491	if (field->key != canonical_key) {	2517	if (field->key != canonical_key)
		2518	{
2492	last = field;	2519	last = field;
2493	continue;	2520	continue;
2494	}	2521	}
2495		2522
2496	if (value)	2523	if (value)
2497	field->value = value;	2524	field->value = value;
2498	else {	2525	else
		2526	{
2499	/* Basically, if the archetype has this key set,	2527	/* Basically, if the archetype has this key set,
2500	* we need to store the null value so when we save	2528	* we need to store the null value so when we save
2501	* it, we save the empty value so that when we load,	2529	* it, we save the empty value so that when we load,
2502	* we get this value back again.	2530	* we get this value back again.
2503	*/	2531	*/
2504	if (get_ob_key_link (&op->arch->clone, canonical_key))	2532	if (get_ob_key_link (&op->arch->clone, canonical_key))
2505	field->value = 0;	2533	field->value = 0;
		2534	else
		2535	{
		2536	if (last)
		2537	last->next = field->next;
2506	else	2538	else
2507	{
2508	if (last) last->next = field->next;
2509	else op->key_values = field->next;	2539	op->key_values = field->next;
2510		2540
2511	delete field;	2541	delete field;
2512	}	2542	}
2513	}	2543	}
2514	return TRUE;	2544	return TRUE;
2515	}	2545	}
2516	/* IF we get here, key doesn't exist */	2546	/* IF we get here, key doesn't exist */
2517		2547
2518	/* No field, we'll have to add it. */	2548	/* No field, we'll have to add it. */
2519		2549
2520	if (!add_key) {	2550	if (!add_key)
2521	return FALSE;	2551	return FALSE;
2522	}	2552
2523	/* There isn't any good reason to store a null	2553	/* There isn't any good reason to store a null
2524	* value in the key/value list. If the archetype has	2554	* value in the key/value list. If the archetype has
2525	* this key, then we should also have it, so shouldn't	2555	* this key, then we should also have it, so shouldn't
2526	* be here. If user wants to store empty strings,	2556	* be here. If user wants to store empty strings,
2527	* should pass in ""	2557	* should pass in ""
2528	*/	2558	*/
2529	if (value == NULL) return TRUE;	2559	if (value == NULL)
2530
2531	field = new key_value;
2532
2533	field->key = canonical_key;
2534	field->value = value;
2535	/* Usual prepend-addition. */
2536	field->next = op->key_values;
2537	op->key_values = field;
2538
2539	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;
2540	}	2571	}
2541		2572
2542	/*	2573	/*
2543	* Updates the key in op to value.	2574	* Updates the key in op to value.
2544	*	2575	*
…		…
2546	* and not add new ones.	2577	* and not add new ones.
2547	* 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
2548	*	2579	*
2549	* Returns TRUE on success.	2580	* Returns TRUE on success.
2550	*/	2581	*/
		2582	int
2551	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)
2552	{	2584	{
2553	shstr key_ (key);	2585	shstr key_ (key);
		2586
2554	return set_ob_key_value_s (op, key_, value, add_key);	2587	return set_ob_key_value_s (op, key_, value, add_key);
2555	}	2588	}
		2589
		2590	object::depth_iterator::depth_iterator (object *container)
		2591	: iterator_base (container)
		2592	{
		2593	while (item->inv)
		2594	item = item->inv;
		2595	}
		2596
		2597	void
		2598	object::depth_iterator::next ()
		2599	{
		2600	if (item->below)
		2601	{
		2602	item = item->below;
		2603
		2604	while (item->inv)
		2605	item = item->inv;
		2606	}
		2607	else
		2608	item = item->env;
		2609	}
		2610
		2611
		2612	const char *
		2613	object::flag_desc (char *desc, int len) const
		2614	{
		2615	char *p = desc;
		2616	bool first = true;
		2617
		2618	*p = 0;
		2619
		2620	for (int i = 0; i < NUM_FLAGS; i++)
		2621	{
		2622	if (len <= 10) // magic constant!
		2623	{
		2624	snprintf (p, len, ",...");
		2625	break;
		2626	}
		2627
		2628	if (flag [i])
		2629	{
		2630	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2631	len -= cnt;
		2632	p += cnt;
		2633	first = false;
		2634	}
		2635	}
		2636
		2637	return desc;
		2638	}
		2639
		2640	// return a suitable string describing an object in enough detail to find it
		2641	const char *
		2642	object::debug_desc (char *info) const
		2643	{
		2644	char flagdesc[512];
		2645	char info2[256 * 4];
		2646	char *p = info;
		2647
		2648	p += snprintf (p, 512, "{cnt:%d,uuid:<1,%" PRIx64 ">,name:\"%s%s%s\",flags:[%s],type:%d}",
		2649	count, uuid.seq,
		2650	&name,
		2651	title ? "\",title:" : "",
		2652	title ? (const char *)title : "",
		2653	flag_desc (flagdesc, 512), type);
		2654
		2655	if (env)
		2656	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2657
		2658	if (map)
		2659	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2660
		2661	return info;
		2662	}
		2663
		2664	const char *
		2665	object::debug_desc () const
		2666	{
		2667	static char info[256 * 3];
		2668	return debug_desc (info);
		2669	}
		2670

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