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Comparing deliantra/server/common/object.C (file contents):
Revision 1.20 by root, Fri Sep 8 18:26:22 2006 UTC vs.
Revision 1.105 by pippijn, Wed Jan 3 00:21:35 2007 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.20 2006/09/08 18:26:22 root Exp $";
4	*/
5
6	/*	1	/*
7	CrossFire, A Multiplayer game for X-windows	2	CrossFire, A Multiplayer game for X-windows
8		3
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	4	Copyright (C) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	5	Copyright (C) 1992 Frank Tore Johansen
…		…
21		16
22	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	18	along with this program; if not, write to the Free Software
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25		20
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	21	The authors can be reached via e-mail at <crossfire@schmorp.de>
27	*/	22	*/
28		23
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.	24	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying	25	sub/add_weight will transcend the environment updating the carrying
31	variable. */	26	variable. */
32	#include <global.h>	27	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	28	#include <stdio.h>
35	#include <sys/types.h>	29	#include <sys/types.h>
36	#include <sys/uio.h>	30	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	31	#include <object.h>
39	#include <funcpoint.h>	32	#include <funcpoint.h>
40	#include <skills.h>
41	#include <loader.h>	33	#include <loader.h>
		34
		35	#include <bitset>
		36
42	int nrofallocobjects = 0;	37	int nrofallocobjects = 0;
		38	static UUID uuid;
		39	const uint64 UUID_SKIP = 1<<19;
43		40
44	object *objects; /* Pointer to the list of used objects */
45	object *active_objects; /* List of active objects that need to be processed */	41	object *active_objects; /* List of active objects that need to be processed */
46		42
47	short freearr_x[SIZEOFFREE]=	43	short freearr_x[SIZEOFFREE] = { 0, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
48	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	44	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
50	short freearr_y[SIZEOFFREE]=	45	};
51	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	46	short freearr_y[SIZEOFFREE] = { 0, -1, -1, 0, 1, 1, 1, 0, -1, -2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
52	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	47	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	int maxfree[SIZEOFFREE]=	48	};
54	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	49	int maxfree[SIZEOFFREE] = { 0, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	50	48, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		51	};
56	int freedir[SIZEOFFREE]= {	52	int freedir[SIZEOFFREE] = {
57	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	53	0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
58	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	54	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		55	};
59		56
		57	static void
		58	write_uuid (void)
		59	{
		60	char filename1[MAX_BUF], filename2[MAX_BUF];
		61
		62	sprintf (filename1, "%s/uuid", settings.localdir);
		63	sprintf (filename2, "%s/uuid~", settings.localdir);
		64
		65	FILE *fp;
		66
		67	if (!(fp = fopen (filename2, "w")))
		68	{
		69	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
		70	return;
		71	}
		72
		73	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
		74	fclose (fp);
		75	rename (filename2, filename1);
		76	}
		77
		78	static void
		79	read_uuid (void)
		80	{
		81	char filename[MAX_BUF];
		82
		83	sprintf (filename, "%s/uuid", settings.localdir);
		84
		85	FILE *fp;
		86
		87	if (!(fp = fopen (filename, "r")))
		88	{
		89	if (errno == ENOENT)
		90	{
		91	LOG (llevInfo, "RESET uid to 1\n");
		92	uuid.seq = 0;
		93	write_uuid ();
		94	return;
		95	}
		96
		97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		98	_exit (1);
		99	}
		100
		101	int version;
		102	unsigned long long uid;
		103	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)
		104	{
		105	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);
		106	_exit (1);
		107	}
		108
		109	uuid.seq = uid;
		110	write_uuid ();
		111	LOG (llevDebug, "read UID: %" PRId64 "\n", uid);
		112	fclose (fp);
		113	}
		114
		115	UUID
		116	gen_uuid ()
		117	{
		118	UUID uid;
		119
		120	uid.seq = ++uuid.seq;
		121
		122	if (!(uuid.seq & (UUID_SKIP - 1)))
		123	write_uuid ();
		124
		125	return uid;
		126	}
		127
		128	void
		129	init_uuid ()
		130	{
		131	read_uuid ();
		132	}
60		133
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	134	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		135	static int
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	136	compare_ob_value_lists_one (const object *wants, const object *has)
		137	{
63	key_value * wants_field;	138	key_value *wants_field;
64		139
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	140	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	141	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	142	* different structure or at least keep the lists sorted...
68	*/	143	*/
69		144
70	/* For each field in wants, */	145	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	146	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		147	{
72	key_value * has_field;	148	key_value *has_field;
73		149
74	/* Look for a field in has with the same key. */	150	/* Look for a field in has with the same key. */
75	has_field = get_ob_key_link(has, wants_field->key);	151	has_field = get_ob_key_link (has, wants_field->key);
		152
		153	if (has_field == NULL)
76		154	{
77	if (has_field == NULL) {
78	/* No field with that name. */	155	/* No field with that name. */
79	return FALSE;	156	return FALSE;
80	}
81		157	}
		158
82	/* Found the matching field. */	159	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {	160	if (has_field->value != wants_field->value)
		161	{
84	/* Values don't match, so this half of the comparison is false. */	162	/* Values don't match, so this half of the comparison is false. */
85	return FALSE;	163	return FALSE;
86	}	164	}
87		165
88	/* If we get here, we found a match. Now for the next field in wants. */	166	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90		167	}
		168
91	/* If we get here, every field in wants has a matching field in has. */	169	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	170	return TRUE;
93	}	171	}
94		172
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	173	/* Returns TRUE if ob1 has the same key_values as ob2. */
		174	static int
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	175	compare_ob_value_lists (const object *ob1, const object *ob2)
		176	{
97	/* However, there may be fields in has which aren't partnered in wants,	177	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	178	* so we need to run the comparison *twice*. :(
99	*/	179	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	180	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
101	}	181	}
102		182
103	/* Function examines the 2 objects given to it, and returns true if	183	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	184	* they can be merged together.
105	*	185	*
106	* Note that this function appears a lot longer than the macro it	186	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	187	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	188	* reduce this to the same efficiency.
109	*	189	*
110	* Check nrof variable *before* calling CAN_MERGE()	190	* Check nrof variable *before* calling can_merge()
111	*	191	*
112	* Improvements made with merge: Better checking on potion, and also	192	* Improvements made with merge: Better checking on potion, and also
113	* check weight	193	* check weight
114	*/	194	*/
115
116	bool
117	object::can_merge (object *ob1, object *ob2)	195	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	196	{
119	/* A couple quicksanity checks */	197	/* A couple quicksanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	198	if (ob1 == ob2
		199	|| ob1->type != ob2->type
		200	|| ob1->speed != ob2->speed
		201	|| ob1->value != ob2->value
		202	|| ob1->name != ob2->name)
121	return 0;	203	return 0;
122		204
123	if (ob1->speed != ob2->speed)	205	//TODO: this ain't working well, use nicer and correct overflow check
124	return 0;
125
126	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	206	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
127	* value could not be stored in a sint32 (which unfortunately sometimes is	207	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).	208	* used to store nrof).
129	*/	209	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)	210	if (ob1->nrof + ob2->nrof >= 1UL << 31)
…		…
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	220	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		221
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	222	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	223	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		224
145		225	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
146	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something	226	|| ob1->arch != ob2->arch
147	* being locked in inventory should prevent merging.
148	* 0x4 in flags3 is CLIENT_SENT
149	*/
150	if ((ob1->arch != ob2->arch) ||
151	(ob1->flags[0] != ob2->flags[0]) ||
152	(ob1->flags[1] != ob2->flags[1]) ||
153	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
154	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
155	(ob1->name != ob2->name) ||	227	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	228	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	229	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	230	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||	231	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||	232	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
161	(ob1->attacktype != ob2->attacktype) ||	233	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	234	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	235	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	236	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	237	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	238	|| ob1->animation_id != ob2->animation_id
167	(ob1->client_type != ob2->client_type) ||	239	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	240	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	241	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	242	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	243	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	244	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	245	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	246	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	247	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	248	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	249	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
178	return 0;	250	return 0;
179		251
180	/* This is really a spellbook check - really, we should	252	/* This is really a spellbook check - really, we should
181	* check all objects in the inventory.	253	* check all objects in the inventory.
182	*/	254	*/
183	if (ob1->inv || ob2->inv)	255	if (ob1->inv || ob2->inv)
184	{	256	{
185	/* if one object has inventory but the other doesn't, not equiv */	257	/* if one object has inventory but the other doesn't, not equiv */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))	258	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;	259	return 0;
188		260
189	/* Now check to see if the two inventory objects could merge */	261	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	262	if (!object::can_merge (ob1->inv, ob2->inv))
191	return 0;	263	return 0;
192		264
193	/* inventory ok - still need to check rest of this object to see	265	/* inventory ok - still need to check rest of this object to see
194	* if it is valid.	266	* if it is valid.
195	*/	267	*/
196	}	268	}
…		…
204		276
205	/* Note sure why the following is the case - either the object has to	277	/* Note sure why the following is the case - either the object has to
206	* be animated or have a very low speed. Is this an attempted monster	278	* be animated or have a very low speed. Is this an attempted monster
207	* check?	279	* check?
208	*/	280	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	281	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	282	return 0;
212		283
213	switch (ob1->type)	284	switch (ob1->type)
214	{	285	{
215	case SCROLL:	286	case SCROLL:
216	if (ob1->level != ob2->level)	287	if (ob1->level != ob2->level)
217	return 0;	288	return 0;
218	break;	289	break;
219	}	290	}
220		291
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	292	if (ob1->key_values != NULL || ob2->key_values != NULL)
222	{	293	{
223	/* At least one of these has key_values. */	294	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	295	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
225	/* One has fields, but the other one doesn't. */	296	/* One has fields, but the other one doesn't. */
226	return 0;	297	return 0;
227	else if (!compare_ob_value_lists (ob1, ob2))	298	else if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	299	return 0;
229	}	300	}
230		301
231	//TODO: generate an event or call into perl for additional checks	302	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	303	if (ob1->self || ob2->self)
233	{	304	{
234	ob1->optimise ();	305	ob1->optimise ();
235	ob2->optimise ();	306	ob2->optimise ();
236		307
237	if (ob1->self || ob2->self)	308	if (ob1->self || ob2->self)
238	return 0;	309	return 0;
239	}	310	}
240		311
241	/* Everything passes, must be OK. */	312	/* Everything passes, must be OK. */
242	return 1;	313	return 1;
243	}	314	}
		315
244	/*	316	/*
245	* sum_weight() is a recursive function which calculates the weight	317	* sum_weight() is a recursive function which calculates the weight
246	* an object is carrying. It goes through in figures out how much	318	* an object is carrying. It goes through in figures out how much
247	* containers are carrying, and sums it up.	319	* containers are carrying, and sums it up.
248	*/	320	*/
249	signed long sum_weight(object *op) {	321	long
		322	sum_weight (object *op)
		323	{
250	signed long sum;	324	long sum;
251	object *inv;	325	object *inv;
		326
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	327	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		328	{
253	if (inv->inv)	329	if (inv->inv)
254	sum_weight(inv);	330	sum_weight (inv);
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	331	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
256	}	332	}
		333
257	if (op->type == CONTAINER && op->stats.Str)	334	if (op->type == CONTAINER && op->stats.Str)
258	sum = (sum * (100 - op->stats.Str))/100;	335	sum = (sum * (100 - op->stats.Str)) / 100;
		336
259	if(op->carrying != sum)	337	if (op->carrying != sum)
260	op->carrying = sum;	338	op->carrying = sum;
		339
261	return sum;	340	return sum;
262	}	341	}
263		342
264	/**	343	/**
265	* Return the outermost environment object for a given object.	344	* Return the outermost environment object for a given object.
266	*/	345	*/
267		346
		347	object *
268	object *object_get_env_recursive (object *op) {	348	object_get_env_recursive (object *op)
		349	{
269	while (op->env != NULL)	350	while (op->env != NULL)
270	op = op->env;	351	op = op->env;
271	return op;	352	return op;
272	}
273
274	/*
275	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
276	* a better check. We basically keeping traversing up until we can't
277	* or find a player.
278	*/
279
280	object *is_player_inv (object *op) {
281	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
282	if (op->env==op)
283	op->env = NULL;
284	return op;
285	}	353	}
286		354
287	/*	355	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	356	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.	357	* Some error messages.
290	* The result of the dump is stored in the static global errmsg array.	358	* The result of the dump is stored in the static global errmsg array.
291	*/	359	*/
292		360
293	void dump_object2(object *op) {	361	char *
294	errmsg[0] = 0;
295	return;
296	//TODO//D#d#
297	#if 0
298	char *cp;
299	/* object *tmp;*/
300
301	if(op->arch!=NULL) {
302	strcat(errmsg,"arch ");
303	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
304	strcat(errmsg,"\n");
305	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	#if 0
308	/* Don't dump player diffs - they are too long, mostly meaningless, and
309	* will overflow the buffer.
310	* Changed so that we don't dump inventory either. This may
311	* also overflow the buffer.
312	*/
313	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	} else {
320	strcat(errmsg,"Object ");
321	if (op->name==NULL) strcat(errmsg, "(null)");
322	else strcat(errmsg,op->name);
323	strcat(errmsg,"\n");
324	#if 0
325	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
326	strcat(errmsg,cp);
327	for (tmp=op->inv; tmp; tmp=tmp->below)
328	dump_object2(tmp);
329	#endif
330	strcat(errmsg,"end\n");
331	}
332	#endif
333	}
334
335	/*
336	* Dumps an object. Returns output in the static global errmsg array.
337	*/
338
339	void dump_object(object *op) {	362	dump_object (object *op)
340	if(op==NULL) {	363	{
341	strcpy(errmsg,"[NULL pointer]");	364	if (!op)
342	return;	365	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		366
348	void dump_all_objects(void) {	367	object_freezer freezer;
349	object *op;	368	save_object (freezer, op, 1);
350	for(op=objects;op!=NULL;op=op->next) {	369	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	370	}
355		371
356	/*	372	/*
357	* get_nearest_part(multi-object, object 2) returns the part of the	373	* get_nearest_part(multi-object, object 2) returns the part of the
358	* multi-object 1 which is closest to the second object.	374	* multi-object 1 which is closest to the second object.
359	* If it's not a multi-object, it is returned.	375	* If it's not a multi-object, it is returned.
360	*/	376	*/
361		377
		378	object *
362	object *get_nearest_part(object *op, const object *pl) {	379	get_nearest_part (object *op, const object *pl)
		380	{
363	object *tmp,*closest;	381	object *tmp, *closest;
364	int last_dist,i;	382	int last_dist, i;
		383
365	if(op->more==NULL)	384	if (op->more == NULL)
366	return op;	385	return op;
367	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	386	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
368	if((i=distance(tmp,pl))<last_dist)	387	if ((i = distance (tmp, pl)) < last_dist)
369	closest=tmp,last_dist=i;	388	closest = tmp, last_dist = i;
370	return closest;	389	return closest;
371	}	390	}
372		391
373	/*	392	/*
374	* Returns the object which has the count-variable equal to the argument.	393	* Returns the object which has the count-variable equal to the argument.
375	*/	394	*/
376		395
		396	object *
377	object *find_object(tag_t i) {	397	find_object (tag_t i)
378	object *op;	398	{
379	for(op=objects;op!=NULL;op=op->next)	399	for (object *op = object::first; op; op = op->next)
380	if(op->count==i)	400	if (op->count == i)
381	break;	401	return op;
		402
382	return op;	403	return 0;
383	}	404	}
384		405
385	/*	406	/*
386	* Returns the first object which has a name equal to the argument.	407	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	408	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	409	* Enables features like "patch <name-of-other-player> food 999"
389	*/	410	*/
390		411
		412	object *
391	object *find_object_name(const char *str) {	413	find_object_name (const char *str)
392	const char *name = shstr::find (str);	414	{
		415	shstr_cmp str_ (str);
393	object *op;	416	object *op;
		417
394	for(op=objects;op!=NULL;op=op->next)	418	for (op = object::first; op != NULL; op = op->next)
395	if(&op->name == name)	419	if (op->name == str_)
396	break;	420	break;
397		421
398	return op;	422	return op;
399	}	423	}
400		424
		425	void
401	void free_all_object_data ()	426	free_all_object_data ()
402	{	427	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	428	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
404	}
405
406	/*
407	* Returns the object which this object marks as being the owner.
408	* A id-scheme is used to avoid pointing to objects which have been
409	* freed and are now reused. If this is detected, the owner is
410	* set to NULL, and NULL is returned.
411	* Changed 2004-02-12 - if the player is setting at the play again
412	* prompt, he is removed, and we don't want to treat him as an owner of
413	* anything, so check removed flag. I don't expect that this should break
414	* anything - once an object is removed, it is basically dead anyways.
415	*/
416
417	object *get_owner(object *op) {
418	if(op->owner==NULL)
419	return NULL;
420
421	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
422	op->owner->count==op->ownercount)
423	return op->owner;
424
425	op->owner=NULL;
426	op->ownercount=0;
427	return NULL;
428	}
429
430	void clear_owner(object *op)
431	{
432	if (!op) return;
433
434	if (op->owner && op->ownercount == op->owner->count)
435	op->owner->refcount--;
436
437	op->owner = NULL;
438	op->ownercount = 0;
439	}	429	}
440		430
441	/*	431	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	432	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	433	* skill and experience objects.
444	*/	434	*/
445	void set_owner (object *op, object *owner)	435	void
		436	object::set_owner (object *owner)
446	{	437	{
447	if(owner==NULL||op==NULL)	438	if (!owner)
448	return;	439	return;
449		440
450	/* next line added to allow objects which own objects */	441	/* next line added to allow objects which own objects */
451	/* Add a check for ownercounts in here, as I got into an endless loop	442	/* Add a check for ownercounts in here, as I got into an endless loop
452	* with the fireball owning a poison cloud which then owned the	443	* with the fireball owning a poison cloud which then owned the
453	* fireball. I believe that was caused by one of the objects getting	444	* fireball. I believe that was caused by one of the objects getting
454	* freed and then another object replacing it. Since the ownercounts	445	* freed and then another object replacing it. Since the ownercounts
455	* didn't match, this check is valid and I believe that cause is valid.	446	* didn't match, this check is valid and I believe that cause is valid.
456	*/	447	*/
457	while (owner->owner && owner!=owner->owner &&	448	while (owner->owner)
458	owner->ownercount==owner->owner->count) owner=owner->owner;	449	owner = owner->owner;
459		450
460	/* IF the owner still has an owner, we did not resolve to a final owner.
461	* so lets not add to that.
462	*/
463	if (owner->owner) return;
464
465	op->owner=owner;	451	this->owner = owner;
466
467	op->ownercount=owner->count;
468	owner->refcount++;
469
470	}
471
472	/* Set the owner to clone's current owner and set the skill and experience
473	* objects to clone's objects (typically those objects that where the owner's
474	* current skill and experience objects at the time when clone's owner was
475	* set - not the owner's current skill and experience objects).
476	*
477	* Use this function if player created an object (e.g. fire bullet, swarm
478	* spell), and this object creates further objects whose kills should be
479	* accounted for the player's original skill, even if player has changed
480	* skills meanwhile.
481	*/
482	void copy_owner (object *op, object *clone)
483	{
484	object *owner = get_owner (clone);
485	if (owner == NULL) {
486	/* players don't have owners - they own themselves. Update
487	* as appropriate.
488	*/
489	if (clone->type == PLAYER) owner=clone;
490	else return;
491	}
492	set_owner(op, owner);
493
494	}	452	}
495		453
496	/* Zero the key_values on op, decrementing the shared-string	454	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	455	* refcounts and freeing the links.
498	*/	456	*/
		457	static void
499	static void free_key_values(object * op)	458	free_key_values (object *op)
500	{	459	{
501	for (key_value *i = op->key_values; i != 0; )	460	for (key_value *i = op->key_values; i != 0;)
502	{	461	{
503	key_value *next = i->next;	462	key_value *next = i->next;
504	delete i;	463	delete i;
		464
505	i = next;	465	i = next;
506	}	466	}
507		467
508	op->key_values = 0;	468	op->key_values = 0;
509	}	469	}
510		470
511	void object::clear ()
512	{
513	attachable_base::clear ();
514
515	free_key_values (this);
516
517	name = 0;
518	name_pl = 0;
519	title = 0;
520	race = 0;
521	slaying = 0;
522	skill = 0;
523	msg = 0;
524	lore = 0;
525	custom_name = 0;
526	materialname = 0;
527
528	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
529
530	SET_FLAG (this, FLAG_REMOVED);
531	}
532
533	void object::clone (object *destination)
534	{
535	*(object_copy *)destination = *(object_copy *)this;
536	*(object_pod *)destination = *(object_pod *)this;
537
538	if (self || cb)
539	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
540	}
541
542	/*	471	/*
543	* clear_object() frees everything allocated by an object, and also
544	* clears all variables and flags to default settings.
545	*/
546
547	void clear_object (object *op)
548	{
549	op->clear ();
550
551	op->contr = NULL;
552	op->below = NULL;
553	op->above = NULL;
554	op->inv = NULL;
555	op->container=NULL;
556	op->env=NULL;
557	op->more=NULL;
558	op->head=NULL;
559	op->map=NULL;
560	op->refcount=0;
561	op->active_next = NULL;
562	op->active_prev = NULL;
563	/* What is not cleared is next, prev, and count */
564
565	op->expmul = 1.0;
566	op->face = blank_face;
567	op->attacked_by_count = -1;
568
569	if (settings.casting_time)
570	op->casting_time = -1;
571	}
572
573	/*
574	* copy object first frees everything allocated by the second object,	472	* copy_to first frees everything allocated by the dst object,
575	* and then copies the contends of the first object into the second	473	* and then copies the contents of itself into the second
576	* object, allocating what needs to be allocated. Basically, any	474	* object, allocating what needs to be allocated. Basically, any
577	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	475	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
578	* if the first object is freed, the pointers in the new object	476	* if the first object is freed, the pointers in the new object
579	* will point at garbage.	477	* will point at garbage.
580	*/	478	*/
581		479	void
582	void copy_object (object *op2, object *op)	480	object::copy_to (object *dst)
583	{	481	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	482	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	483	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
586		484
587	op2->clone (op);	485	*(object_copy *)dst = *this;
588		486
589	if (is_freed) SET_FLAG (op, FLAG_FREED);	487	if (is_freed)
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	488	SET_FLAG (dst, FLAG_FREED);
591		489
		490	if (is_removed)
		491	SET_FLAG (dst, FLAG_REMOVED);
		492
592	if (op2->speed < 0)	493	if (speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	494	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
594		495
595	/* Copy over key_values, if any. */	496	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	497	if (key_values)
597	{	498	{
598	key_value *tail = NULL;	499	key_value *tail = 0;
599	key_value *i;	500	key_value *i;
600		501
601	op->key_values = NULL;	502	dst->key_values = 0;
602		503
603	for (i = op2->key_values; i != NULL; i = i->next)	504	for (i = key_values; i; i = i->next)
604	{	505	{
605	key_value *new_link = new key_value;	506	key_value *new_link = new key_value;
606		507
607	new_link->next = NULL;	508	new_link->next = 0;
608	new_link->key = i->key;	509	new_link->key = i->key;
609	new_link->value = i->value;	510	new_link->value = i->value;
610		511
611	/* Try and be clever here, too. */	512	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	513	if (!dst->key_values)
613	{	514	{
614	op->key_values = new_link;	515	dst->key_values = new_link;
615	tail = new_link;	516	tail = new_link;
616	}	517	}
617	else	518	else
618	{	519	{
619	tail->next = new_link;	520	tail->next = new_link;
620	tail = new_link;	521	tail = new_link;
621	}	522	}
622	}	523	}
623	}	524	}
624		525
625	update_ob_speed (op);	526	dst->set_speed (dst->speed);
626	}	527	}
627		528
		529	object *
628	object::object ()	530	object::clone ()
629	{	531	{
630	count = ++ob_count;	532	object *neu = create ();
631		533	copy_to (neu);
632	next = objects;	534	return neu;
633
634	if (objects)
635	objects->prev = this;
636
637	objects = this;
638
639	SET_FLAG (this, FLAG_REMOVED);
640
641	expmul = 1.0;
642	face = blank_face;
643	attacked_by_count = -1;
644	}
645
646	object::~object ()
647	{
648	}	535	}
649		536
650	/*	537	/*
651	* 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
652	* 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
653	* 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.
654	*/	541	*/
655		542	void
656	void update_turn_face(object *op) {	543	update_turn_face (object *op)
		544	{
657	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	545	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
658	return;	546	return;
		547
659	SET_ANIMATION(op, op->direction);	548	SET_ANIMATION (op, op->direction);
660	update_object(op,UP_OBJ_FACE);	549	update_object (op, UP_OBJ_FACE);
661	}	550	}
662		551
663	/*	552	/*
664	* 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
665	* 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.
666	* 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.
667	*/	556	*/
668		557	void
669	void update_ob_speed(object *op) {	558	object::set_speed (float speed)
670	extern int arch_init;	559	{
671		560	if (flag [FLAG_FREED] && speed)
672	/* No reason putting the archetypes objects on the speed list,	561	{
673	* since they never really need to be updated.
674	*/
675
676	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
677	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	562	LOG (llevError, "Object %s is freed but has speed.\n", &name);
678	#ifdef MANY_CORES
679	abort();
680	#else
681	op->speed = 0;	563	speed = 0;
682	#endif
683	}	564	}
684	if (arch_init) {
685	return;
686	}
687	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
688	/* If already on active list, don't do anything */
689	if (op->active_next || op->active_prev || op==active_objects)
690	return;
691		565
692	/* process_events() expects us to insert the object at the beginning	566	this->speed = speed;
693	* of the list. */	567
694	op->active_next = active_objects;	568	if (has_active_speed ())
695	if (op->active_next!=NULL)	569	activate ();
696	op->active_next->active_prev = op;
697	active_objects = op;
698	}
699	else {	570	else
700	/* If not on the active list, nothing needs to be done */	571	deactivate ();
701	if (!op->active_next && !op->active_prev && op!=active_objects)
702	return;
703
704	if (op->active_prev==NULL) {
705	active_objects = op->active_next;
706	if (op->active_next!=NULL)
707	op->active_next->active_prev = NULL;
708	}
709	else {
710	op->active_prev->active_next = op->active_next;
711	if (op->active_next)
712	op->active_next->active_prev = op->active_prev;
713	}
714	op->active_next = NULL;
715	op->active_prev = NULL;
716	}
717	}	572	}
718		573
719	/* This function removes object 'op' from the list of active
720	* objects.
721	* This should only be used for style maps or other such
722	* reference maps where you don't want an object that isn't
723	* in play chewing up cpu time getting processed.
724	* The reverse of this is to call update_ob_speed, which
725	* will do the right thing based on the speed of the object.
726	*/
727	void remove_from_active_list(object *op)
728	{
729	/* If not on the active list, nothing needs to be done */
730	if (!op->active_next && !op->active_prev && op!=active_objects)
731	return;
732
733	if (op->active_prev==NULL) {
734	active_objects = op->active_next;
735	if (op->active_next!=NULL)
736	op->active_next->active_prev = NULL;
737	}
738	else {
739	op->active_prev->active_next = op->active_next;
740	if (op->active_next)
741	op->active_next->active_prev = op->active_prev;
742	}
743	op->active_next = NULL;
744	op->active_prev = NULL;
745	}
746
747	/*	574	/*
748	* update_object() updates the array which represents the map.	575	* update_object() updates the the map.
749	* It takes into account invisible objects (and represent squares covered	576	* It takes into account invisible objects (and represent squares covered
750	* 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
751	* invisible object, etc...)	578	* invisible object, etc...)
752	* 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
753	* 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
754	* updating that window, though, since update_object() is called _often_)	581	* updating that window, though, since update_object() is called _often_)
755	*	582	*
756	* 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.
757	* For example, if the only thing that has changed is the face (due to
758	* an animation), we don't need to call update_position until that actually
759	* comes into view of a player. OTOH, many other things, like addition/removal
760	* of walls or living creatures may need us to update the flags now.
761	* current action are:	584	* current action are:
762	* UP_OBJ_INSERT: op was inserted	585	* UP_OBJ_INSERT: op was inserted
763	* UP_OBJ_REMOVE: op was removed	586	* UP_OBJ_REMOVE: op was removed
764	* 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
765	* 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.
766	* UP_OBJ_FACE: only the objects face has changed.	589	* UP_OBJ_FACE: only the objects face has changed.
767	*/	590	*/
768		591	void
769	void update_object(object *op, int action) {	592	update_object (object *op, int action)
770	int update_now=0, flags;	593	{
771	MoveType move_on, move_off, move_block, move_slow;	594	MoveType move_on, move_off, move_block, move_slow;
772		595
773	if (op == NULL) {	596	if (op == NULL)
		597	{
774	/* this should never happen */	598	/* this should never happen */
775	LOG(llevDebug,"update_object() called for NULL object.\n");	599	LOG (llevDebug, "update_object() called for NULL object.\n");
776	return;	600	return;
777	}
778		601	}
779	if(op->env!=NULL) {	602
		603	if (op->env)
		604	{
780	/* Animation is currently handled by client, so nothing	605	/* Animation is currently handled by client, so nothing
781	* to do in this case.	606	* to do in this case.
782	*/	607	*/
783	return;	608	return;
784	}	609	}
785		610
786	/* 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
787	* going to get freed anyways.	612	* going to get freed anyways.
788	*/	613	*/
789	if (!op->map || op->map->in_memory == MAP_SAVING) return;	614	if (!op->map || op->map->in_memory == MAP_SAVING)
790		615	return;
		616
791	/* make sure the object is within map boundaries */	617	/* make sure the object is within map boundaries */
792	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)
793	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	619	{
794	LOG(llevError,"update_object() called for object out of map!\n");	620	LOG (llevError, "update_object() called for object out of map!\n");
795	#ifdef MANY_CORES	621	#ifdef MANY_CORES
796	abort();	622	abort ();
797	#endif	623	#endif
798	return;	624	return;
799	}
800		625	}
801	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
802	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
803	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
804	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
805	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
806	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
807		626
		627	mapspace &m = op->ms ();
		628
		629	if (!(m.flags_ & P_UPTODATE))
		630	/* nop */;
808	if (action == UP_OBJ_INSERT) {	631	else if (action == UP_OBJ_INSERT)
		632	{
		633	// this is likely overkill, TODO: revisit (schmorp)
809	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	634	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
810	update_now=1;
811
812	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	635	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
813	update_now=1;	636	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
814		637	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		638	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
815	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	639	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
816	update_now=1;	640	|| (m.move_on | op->move_on ) != m.move_on
817
818	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
819	update_now=1;
820
821	if (op->type == SAFE_GROUND && !(flags & P_SAFE))
822	update_now=1;
823
824	if ((move_on | op->move_on) != move_on) update_now=1;
825
826	if ((move_off | op->move_off) != move_off) update_now=1;	641	|| (m.move_off | op->move_off ) != m.move_off
827		642	|| (m.move_slow | op->move_slow) != m.move_slow
828	/* 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
829	* to have move_allow right now.	644	* to have move_allow right now.
830	*/	645	*/
831	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	646	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
832	update_now=1;	647	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
833		648	m.flags_ = 0;
834	if ((move_slow | op->move_slow) != move_slow)
835	update_now=1;
836	}	649	}
837	/* if the object is being removed, we can't make intelligent	650	/* if the object is being removed, we can't make intelligent
838	* decisions, because remove_ob can't really pass the object	651	* decisions, because remove_ob can't really pass the object
839	* that is being removed.	652	* that is being removed.
840	*/	653	*/
841	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	654	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
842	update_now=1;	655	m.flags_ = 0;
843	} else if (action == UP_OBJ_FACE) {	656	else if (action == UP_OBJ_FACE)
844	/* Nothing to do for that case */	657	/* Nothing to do for that case */ ;
845	}
846	else {	658	else
847	LOG(llevError,"update_object called with invalid action: %d\n", action);	659	LOG (llevError, "update_object called with invalid action: %d\n", action);
848	}
849		660
850	if (update_now) {
851	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
852	update_position(op->map, op->x, op->y);
853	}
854
855	if(op->more!=NULL)	661	if (op->more)
856	update_object(op->more, action);	662	update_object (op->more, action);
857	}	663	}
858		664
		665	object *object::first;
859		666
860	/*	667	object::object ()
861	* free_object() frees everything allocated by an object, removes	668	{
862	* it from the list of used objects, and puts it on the list of	669	SET_FLAG (this, FLAG_REMOVED);
863	* free objects. The IS_FREED() flag is set in the object.	670
864	* The object must have been removed by remove_ob() first for	671	expmul = 1.0;
865	* this function to succeed.	672	face = blank_face;
866	*	673	}
867	* If free_inventory is set, free inventory as well. Else drop items in	674
868	* inventory to the ground.	675	object::~object ()
869	*/	676	{
		677	free_key_values (this);
		678	}
		679
		680	void object::link ()
		681	{
		682	count = ++ob_count;
		683	uuid = gen_uuid ();
		684
		685	prev = 0;
		686	next = object::first;
		687
		688	if (object::first)
		689	object::first->prev = this;
		690
		691	object::first = this;
		692	}
		693
		694	void object::unlink ()
		695	{
		696	if (this == object::first)
		697	object::first = next;
		698
		699	/* Remove this object from the list of used objects */
		700	if (prev) prev->next = next;
		701	if (next) next->prev = prev;
		702
		703	prev = 0;
		704	next = 0;
		705	}
		706
		707	bool
		708	object::active () const
		709	{
		710	return active_next || active_prev || this == active_objects;
		711	}
870		712
871	void	713	void
872	free_object (object * ob)	714	object::activate ()
873	{	715	{
874	free_object2 (ob, 0);	716	/* If already on active list, don't do anything */
		717	if (active ())
		718	return;
		719
		720	if (has_active_speed ())
		721	{
		722	/* process_events() expects us to insert the object at the beginning
		723	* of the list. */
		724	active_next = active_objects;
		725
		726	if (active_next)
		727	active_next->active_prev = this;
		728
		729	active_objects = this;
		730	}
875	}	731	}
876		732
877	void	733	void
878	free_object2 (object * ob, int free_inventory)	734	object::activate_recursive ()
879	{	735	{
880	object *tmp, *op;	736	activate ();
881		737
882	if (!QUERY_FLAG (ob, FLAG_REMOVED))	738	for (object *op = inv; op; op = op->below)
883	{	739	op->activate_recursive ();
884	LOG (llevDebug, "Free object called with non removed object\n");	740	}
885	dump_object (ob);
886	#ifdef MANY_CORES
887	abort ();
888	#endif
889	}
890		741
891	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	742	/* This function removes object 'op' from the list of active
892	{	743	* objects.
893	LOG (llevMonster, "Warning: tried to free friendly object.\n");	744	* This should only be used for style maps or other such
894	remove_friendly_object (ob);	745	* reference maps where you don't want an object that isn't
895	}	746	* in play chewing up cpu time getting processed.
896		747	* The reverse of this is to call update_ob_speed, which
897	if (QUERY_FLAG (ob, FLAG_FREED))	748	* will do the right thing based on the speed of the object.
898	{	749	*/
899	dump_object (ob);	750	void
900	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	751	object::deactivate ()
		752	{
		753	/* If not on the active list, nothing needs to be done */
		754	if (!active ())
901	return;	755	return;
902	}
903		756
904	if (ob->more != NULL)	757	if (active_prev == 0)
905	{
906	free_object2 (ob->more, free_inventory);
907	ob->more = NULL;
908	}
909
910	if (ob->inv)
911	{
912	/* Only if the space blocks everything do we not process -
913	* if some form of movement is allowed, let objects
914	* drop on that space.
915	*/
916	if (free_inventory || ob->map == NULL
917	|| ob->map->in_memory != MAP_IN_MEMORY
918	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
919	{
920	op = ob->inv;
921
922	while (op != NULL)
923	{	758	{
924	tmp = op->below;	759	active_objects = active_next;
925	remove_ob (op);	760	if (active_next)
926	free_object2 (op, free_inventory);	761	active_next->active_prev = 0;
927	op = tmp;
928	}
929	}
930	else
931	{ /* Put objects in inventory onto this space */
932	op = ob->inv;
933
934	while (op != NULL)
935	{
936	tmp = op->below;
937	remove_ob (op);
938
939	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
940	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
941	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
942	free_object (op);
943	else
944	{
945	op->x = ob->x;
946	op->y = ob->y;
947	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
948	}
949
950	op = tmp;
951	}
952	}
953	}
954
955	/* Remove object from the active list */
956	ob->speed = 0;
957	update_ob_speed (ob);
958
959	SET_FLAG (ob, FLAG_FREED);
960	ob->count = 0;
961
962	/* Remove this object from the list of used objects */
963	if (ob->prev == NULL)
964	{
965	objects = ob->next;
966
967	if (objects != NULL)
968	objects->prev = NULL;
969	}	762	}
970	else	763	else
971	{	764	{
972	ob->prev->next = ob->next;	765	active_prev->active_next = active_next;
		766	if (active_next)
		767	active_next->active_prev = active_prev;
		768	}
973		769
974	if (ob->next != NULL)	770	active_next = 0;
975	ob->next->prev = ob->prev;	771	active_prev = 0;
		772	}
		773
		774	void
		775	object::deactivate_recursive ()
		776	{
		777	for (object *op = inv; op; op = op->below)
		778	op->deactivate_recursive ();
		779
		780	deactivate ();
		781	}
		782
		783	/*
		784	* Remove and free all objects in the inventory of the given object.
		785	* object.c ?
		786	*/
		787	void
		788	object::destroy_inv (bool drop_to_ground)
		789	{
		790	// need to check first, because the checks below might segfault
		791	// as we might be on an invalid mapspace and crossfire code
		792	// is too buggy to ensure that the inventory is empty.
		793	// corollary: if you create arrows etc. with stuff in tis inventory,
		794	// cf will crash below with off-map x and y
		795	if (!inv)
		796	return;
		797
		798	/* Only if the space blocks everything do we not process -
		799	* if some form of movement is allowed, let objects
		800	* drop on that space.
		801	*/
		802	if (!drop_to_ground
		803	|| !map
		804	|| map->in_memory != MAP_IN_MEMORY
		805	|| ms ().move_block == MOVE_ALL)
		806	{
		807	while (inv)
		808	{
		809	inv->destroy_inv (drop_to_ground);
		810	inv->destroy ();
		811	}
		812	}
		813	else
		814	{ /* Put objects in inventory onto this space */
		815	while (inv)
		816	{
		817	object *op = inv;
		818
		819	if (op->flag [FLAG_STARTEQUIP]
		820	|| op->flag [FLAG_NO_DROP]
		821	|| op->type == RUNE
		822	|| op->type == TRAP
		823	|| op->flag [FLAG_IS_A_TEMPLATE])
		824	op->destroy ();
		825	else
		826	map->insert (op, x, y);
		827	}
		828	}
		829	}
		830
		831	object *object::create ()
		832	{
		833	object *op = new object;
		834	op->link ();
		835	return op;
		836	}
		837
		838	void
		839	object::do_destroy ()
		840	{
		841	if (flag [FLAG_IS_LINKED])
		842	remove_button_link (this);
		843
		844	if (flag [FLAG_FRIENDLY])
		845	remove_friendly_object (this);
		846
		847	if (!flag [FLAG_REMOVED])
		848	remove ();
		849
		850	if (flag [FLAG_FREED])
		851	return;
		852
		853	set_speed (0);
		854
		855	flag [FLAG_FREED] = 1;
		856
		857	attachable::do_destroy ();
		858
		859	destroy_inv (true);
		860	unlink ();
		861
		862	// hack to ensure that freed objects still have a valid map
		863	{
		864	static maptile *freed_map; // freed objects are moved here to avoid crashes
		865
		866	if (!freed_map)
		867	{
		868	freed_map = new maptile;
		869
		870	freed_map->name = "/internal/freed_objects_map";
		871	freed_map->width = 3;
		872	freed_map->height = 3;
		873
		874	freed_map->alloc ();
		875	freed_map->in_memory = MAP_IN_MEMORY;
976	}	876	}
977		877
978	free_key_values (ob);	878	map = freed_map;
		879	x = 1;
		880	y = 1;
		881	}
979		882
980	/* Now link it with the free_objects list: */	883	head = 0;
981	ob->prev = 0;
982	ob->next = 0;
983		884
984	delete ob;	885	if (more)
		886	{
		887	more->destroy ();
		888	more = 0;
		889	}
		890
		891	// clear those pointers that likely might have circular references to us
		892	owner = 0;
		893	enemy = 0;
		894	attacked_by = 0;
		895
		896	// only relevant for players(?), but make sure of it anyways
		897	contr = 0;
		898	}
		899
		900	void
		901	object::destroy (bool destroy_inventory)
		902	{
		903	if (destroyed ())
		904	return;
		905
		906	if (destroy_inventory)
		907	destroy_inv (false);
		908
		909	attachable::destroy ();
985	}	910	}
986		911
987	/*	912	/*
988	* sub_weight() recursively (outwards) subtracts a number from the	913	* sub_weight() recursively (outwards) subtracts a number from the
989	* weight of an object (and what is carried by it's environment(s)).	914	* weight of an object (and what is carried by it's environment(s)).
990	*/	915	*/
991		916	void
992	void sub_weight (object *op, signed long weight) {	917	sub_weight (object *op, signed long weight)
		918	{
993	while (op != NULL) {	919	while (op != NULL)
		920	{
994	if (op->type == CONTAINER) {	921	if (op->type == CONTAINER)
995	weight=(signed long)(weight*(100-op->stats.Str)/100);	922	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
996	}	923
997	op->carrying-=weight;	924	op->carrying -= weight;
998	op = op->env;	925	op = op->env;
999	}	926	}
1000	}	927	}
1001		928
1002	/* remove_ob(op):	929	/* op->remove ():
1003	* This function removes the object op from the linked list of objects	930	* This function removes the object op from the linked list of objects
1004	* which it is currently tied to. When this function is done, the	931	* which it is currently tied to. When this function is done, the
1005	* object will have no environment. If the object previously had an	932	* object will have no environment. If the object previously had an
1006	* environment, the x and y coordinates will be updated to	933	* environment, the x and y coordinates will be updated to
1007	* the previous environment.	934	* the previous environment.
1008	* Beware: This function is called from the editor as well!	935	* Beware: This function is called from the editor as well!
1009	*/	936	*/
1010		937	void
1011	void remove_ob(object *op) {	938	object::remove ()
		939	{
1012	object *tmp,*last=NULL;	940	object *tmp, *last = 0;
1013	object *otmp;	941	object *otmp;
1014	tag_t tag;
1015	int check_walk_off;
1016	mapstruct *m;
1017	sint16 x,y;
1018
1019		942
1020	if(QUERY_FLAG(op,FLAG_REMOVED)) {	943	if (QUERY_FLAG (this, FLAG_REMOVED))
1021	dump_object(op);	944	return;
1022	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1023		945
1024	/* Changed it to always dump core in this case. As has been learned
1025	* in the past, trying to recover from errors almost always
1026	* make things worse, and this is a real error here - something
1027	* that should not happen.
1028	* Yes, if this was a mission critical app, trying to do something
1029	* to recover may make sense, but that is because failure of the app
1030	* may have other disastrous problems. Cf runs out of a script
1031	* so is easily enough restarted without any real problems.
1032	* MSW 2001-07-01
1033	*/
1034	abort();
1035	}
1036	if(op->more!=NULL)
1037	remove_ob(op->more);
1038
1039	SET_FLAG(op, FLAG_REMOVED);	946	SET_FLAG (this, FLAG_REMOVED);
		947	INVOKE_OBJECT (REMOVE, this);
1040		948
		949	if (more)
		950	more->remove ();
		951
1041	/*	952	/*
1042	* In this case, the object to be removed is in someones	953	* In this case, the object to be removed is in someones
1043	* inventory.	954	* inventory.
1044	*/	955	*/
1045	if(op->env!=NULL) {	956	if (env)
		957	{
1046	if(op->nrof)	958	if (nrof)
1047	sub_weight(op->env, op->weight*op->nrof);	959	sub_weight (env, weight * nrof);
1048	else	960	else
1049	sub_weight(op->env, op->weight+op->carrying);	961	sub_weight (env, weight + carrying);
1050		962
1051	/* NO_FIX_PLAYER is set when a great many changes are being	963	/* NO_FIX_PLAYER is set when a great many changes are being
1052	* made to players inventory. If set, avoiding the call	964	* made to players inventory. If set, avoiding the call
1053	* to save cpu time.	965	* to save cpu time.
1054	*/	966	*/
1055	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	967	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1056	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	968	otmp->update_stats ();
1057	fix_player(otmp);
1058		969
1059	if(op->above!=NULL)	970	if (above)
1060	op->above->below=op->below;	971	above->below = below;
1061	else	972	else
1062	op->env->inv=op->below;	973	env->inv = below;
1063		974
1064	if(op->below!=NULL)	975	if (below)
1065	op->below->above=op->above;	976	below->above = above;
1066		977
1067	/* we set up values so that it could be inserted into	978	/* we set up values so that it could be inserted into
1068	* the map, but we don't actually do that - it is up	979	* the map, but we don't actually do that - it is up
1069	* to the caller to decide what we want to do.	980	* to the caller to decide what we want to do.
		981	*/
		982	x = env->x, y = env->y;
		983	map = env->map;
		984	above = 0, below = 0;
		985	env = 0;
		986	}
		987	else if (map)
		988	{
		989	if (type == PLAYER)
		990	{
		991	--map->players;
		992	map->touch ();
		993	}
		994
		995	map->dirty = true;
		996
		997	/* link the object above us */
		998	if (above)
		999	above->below = below;
		1000	else
		1001	map->at (x, y).top = below; /* we were top, set new top */
		1002
		1003	/* Relink the object below us, if there is one */
		1004	if (below)
		1005	below->above = above;
		1006	else
		1007	{
		1008	/* Nothing below, which means we need to relink map object for this space
		1009	* use translated coordinates in case some oddness with map tiling is
		1010	* evident
1070	*/	1011	*/
1071	op->x=op->env->x,op->y=op->env->y;	1012	if (GET_MAP_OB (map, x, y) != this)
1072	op->map=op->env->map;	1013	{
1073	op->above=NULL,op->below=NULL;	1014	char *dump = dump_object (this);
1074	op->env=NULL;	1015	LOG (llevError,
		1016	"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);
		1017	free (dump);
		1018	dump = dump_object (GET_MAP_OB (map, x, y));
		1019	LOG (llevError, "%s\n", dump);
		1020	free (dump);
		1021	}
		1022
		1023	map->at (x, y).bot = above; /* goes on above it. */
		1024	}
		1025
		1026	above = 0;
		1027	below = 0;
		1028
		1029	if (map->in_memory == MAP_SAVING)
1075	return;	1030	return;
1076	}
1077		1031
1078	/* If we get here, we are removing it from a map */	1032	int check_walk_off = !flag [FLAG_NO_APPLY];
1079	if (op->map == NULL) return;
1080		1033
1081	x = op->x;	1034	for (tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
1082	y = op->y;
1083	m = get_map_from_coord(op->map, &x, &y);
1084
1085	if (!m) {
1086	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1087	op->map->path, op->x, op->y);
1088	/* in old days, we used to set x and y to 0 and continue.
1089	* it seems if we get into this case, something is probablye
1090	* screwed up and should be fixed.
1091	*/
1092	abort();
1093	}
1094	if (op->map != m) {
1095	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1096	op->map->path, m->path, op->x, op->y, x, y);
1097	}
1098
1099	/* Re did the following section of code - it looks like it had
1100	* lots of logic for things we no longer care about
1101	*/
1102
1103	/* link the object above us */
1104	if (op->above)
1105	op->above->below=op->below;
1106	else
1107	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1108
1109	/* Relink the object below us, if there is one */
1110	if(op->below) {
1111	op->below->above=op->above;
1112	} else {
1113	/* Nothing below, which means we need to relink map object for this space
1114	* use translated coordinates in case some oddness with map tiling is
1115	* evident
1116	*/
1117	if(GET_MAP_OB(m,x,y)!=op) {
1118	dump_object(op);
1119	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);
1120	dump_object(GET_MAP_OB(m,x,y));
1121	LOG(llevError,"%s\n",errmsg);
1122	}	1035	{
1123	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1124	}
1125	op->above=NULL;
1126	op->below=NULL;
1127
1128	if (op->map->in_memory == MAP_SAVING)
1129	return;
1130
1131	tag = op->count;
1132	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1133	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1134	/* No point updating the players look faces if he is the object	1036	/* No point updating the players look faces if he is the object
1135	* being removed.	1037	* being removed.
1136	*/	1038	*/
1137		1039
1138	if(tmp->type==PLAYER && tmp!=op) {	1040	if (tmp->type == PLAYER && tmp != this)
		1041	{
1139	/* If a container that the player is currently using somehow gets	1042	/* If a container that the player is currently using somehow gets
1140	* removed (most likely destroyed), update the player view	1043	* removed (most likely destroyed), update the player view
1141	* appropriately.	1044	* appropriately.
1142	*/	1045	*/
1143	if (tmp->container==op) {	1046	if (tmp->container == this)
1144	CLEAR_FLAG(op, FLAG_APPLIED);	1047	{
		1048	flag [FLAG_APPLIED] = 0;
1145	tmp->container=NULL;	1049	tmp->container = 0;
		1050	}
		1051
		1052	if (tmp->contr->ns)
		1053	tmp->contr->ns->floorbox_update ();
1146	}	1054	}
1147	tmp->contr->socket.update_look=1;	1055
1148	}
1149	/* See if player moving off should effect something */	1056	/* See if object moving off should effect something */
1150	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1057	if (check_walk_off
		1058	&& ((move_type & tmp->move_off)
1151	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1059	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1152		1060	{
1153	move_apply(tmp, op, NULL);	1061	move_apply (tmp, this, 0);
		1062
1154	if (was_destroyed (op, tag)) {	1063	if (destroyed ())
1155	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "	1064	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1156	"leaving object\n", &tmp->name, &tmp->arch->name);
1157	}	1065	}
1158	}
1159		1066
1160	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1067	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1161		1068	//TODO: why is this horrible hacka fix? get rid of this code=bug! (schmorp)
1162	if(tmp->above == tmp)	1069	if (tmp->above == tmp)
1163	tmp->above = NULL;	1070	tmp->above = 0;
		1071
1164	last=tmp;	1072	last = tmp;
1165	}	1073	}
		1074
1166	/* last == NULL of there are no objects on this space */	1075	/* last == NULL if there are no objects on this space */
1167	if (last==NULL) {	1076	//TODO: this makes little sense, why only update the topmost object?
1168	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1077	if (!last)
1169	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1078	map->at (x, y).flags_ = 0;
1170	* those out anyways, and if there are any flags set right now, they won't
1171	* be correct anyways.
1172	*/
1173	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1174	update_position(op->map, op->x, op->y);
1175	}
1176	else	1079	else
1177	update_object(last, UP_OBJ_REMOVE);	1080	update_object (last, UP_OBJ_REMOVE);
1178		1081
1179	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1082	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1180	update_all_los(op->map, op->x, op->y);	1083	update_all_los (map, x, y);
1181		1084	}
1182	}	1085	}
1183		1086
1184	/*	1087	/*
1185	* merge_ob(op,top):	1088	* merge_ob(op,top):
1186	*	1089	*
1187	* This function goes through all objects below and including top, and	1090	* This function goes through all objects below and including top, and
1188	* merges op to the first matching object.	1091	* merges op to the first matching object.
1189	* If top is NULL, it is calculated.	1092	* If top is NULL, it is calculated.
1190	* Returns pointer to object if it succeded in the merge, otherwise NULL	1093	* Returns pointer to object if it succeded in the merge, otherwise NULL
1191	*/	1094	*/
1192		1095	object *
1193	object *merge_ob(object *op, object *top) {	1096	merge_ob (object *op, object *top)
		1097	{
1194	if(!op->nrof)	1098	if (!op->nrof)
1195	return 0;	1099	return 0;
1196	if(top==NULL)	1100
		1101	if (top)
1197	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1102	for (top = op; top && top->above; top = top->above)
		1103	;
		1104
1198	for(;top!=NULL;top=top->below) {	1105	for (; top; top = top->below)
		1106	{
1199	if(top==op)	1107	if (top == op)
1200	continue;	1108	continue;
1201	if (CAN_MERGE(op,top))	1109
1202	{	1110	if (object::can_merge (op, top))
		1111	{
1203	top->nrof+=op->nrof;	1112	top->nrof += op->nrof;
		1113
1204	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1114	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1205	op->weight = 0; /* Don't want any adjustements now */	1115	op->weight = 0; /* Don't want any adjustements now */
1206	remove_ob(op);	1116	op->destroy ();
1207	free_object(op);
1208	return top;	1117	return top;
1209	}	1118	}
1210	}	1119	}
		1120
1211	return NULL;	1121	return 0;
1212	}	1122	}
1213		1123
1214	/*	1124	/*
1215	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1125	* same as insert_ob_in_map except it handle separate coordinates and do a clean
1216	* job preparing multi-part monsters	1126	* job preparing multi-part monsters
1217	*/	1127	*/
		1128	object *
1218	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1129	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1219	object* tmp;	1130	{
1220	if (op->head)	1131	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1221	op=op->head;	1132	{
1222	for (tmp=op;tmp;tmp=tmp->more){
1223	tmp->x=x+tmp->arch->clone.x;	1133	tmp->x = x + tmp->arch->clone.x;
1224	tmp->y=y+tmp->arch->clone.y;	1134	tmp->y = y + tmp->arch->clone.y;
1225	}	1135	}
		1136
1226	return insert_ob_in_map (op, m, originator, flag);	1137	return insert_ob_in_map (op, m, originator, flag);
1227	}	1138	}
1228		1139
1229	/*	1140	/*
1230	* insert_ob_in_map (op, map, originator, flag):	1141	* insert_ob_in_map (op, map, originator, flag):
1231	* This function inserts the object in the two-way linked list	1142	* This function inserts the object in the two-way linked list
…		…
1244	* Return value:	1155	* Return value:
1245	* new object if 'op' was merged with other object	1156	* new object if 'op' was merged with other object
1246	* NULL if 'op' was destroyed	1157	* NULL if 'op' was destroyed
1247	* just 'op' otherwise	1158	* just 'op' otherwise
1248	*/	1159	*/
1249		1160	object *
1250	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1161	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1251	{	1162	{
1252	object *tmp, *top, *floor=NULL;	1163	object *tmp, *top, *floor = NULL;
1253	sint16 x,y;	1164	sint16 x, y;
1254		1165
1255	if (QUERY_FLAG (op, FLAG_FREED)) {	1166	if (QUERY_FLAG (op, FLAG_FREED))
		1167	{
1256	LOG (llevError, "Trying to insert freed object!\n");	1168	LOG (llevError, "Trying to insert freed object!\n");
1257	return NULL;	1169	return NULL;
		1170	}
		1171
		1172	if (!m)
1258	}	1173	{
1259	if(m==NULL) {
1260	dump_object(op);	1174	char *dump = dump_object (op);
1261	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);	1175	LOG (llevError, "Trying to insert in null-map!\n%s\n", dump);
		1176	free (dump);
1262	return op;	1177	return op;
1263	}	1178	}
		1179
1264	if(out_of_map(m,op->x,op->y)) {	1180	if (out_of_map (m, op->x, op->y))
		1181	{
1265	dump_object(op);	1182	char *dump = dump_object (op);
1266	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1183	LOG (llevError, "Trying to insert object outside the map.\n%s\n", dump);
1267	#ifdef MANY_CORES	1184	#ifdef MANY_CORES
1268	/* Better to catch this here, as otherwise the next use of this object	1185	/* Better to catch this here, as otherwise the next use of this object
1269	* is likely to cause a crash. Better to find out where it is getting	1186	* is likely to cause a crash. Better to find out where it is getting
1270	* improperly inserted.	1187	* improperly inserted.
1271	*/	1188	*/
1272	abort();	1189	abort ();
1273	#endif	1190	#endif
		1191	free (dump);
1274	return op;	1192	return op;
1275	}	1193	}
		1194
1276	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1195	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1196	{
1277	dump_object(op);	1197	char *dump = dump_object (op);
1278	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);	1198	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", dump);
		1199	free (dump);
1279	return op;	1200	return op;
		1201	}
		1202
		1203	if (op->more)
1280	}	1204	{
1281	if(op->more!=NULL) {
1282	/* The part may be on a different map. */	1205	/* The part may be on a different map. */
1283		1206
1284	object *more = op->more;	1207	object *more = op->more;
1285		1208
1286	/* We really need the caller to normalize coordinates - if	1209	/* We really need the caller to normalise coordinates - if
1287	* we set the map, that doesn't work if the location is within	1210	* we set the map, that doesn't work if the location is within
1288	* a map and this is straddling an edge. So only if coordinate	1211	* a map and this is straddling an edge. So only if coordinate
1289	* is clear wrong do we normalize it.	1212	* is clear wrong do we normalise it.
1290	*/	1213	*/
1291	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1214	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1292	more->map = get_map_from_coord(m, &more->x, &more->y);	1215	more->map = get_map_from_coord (m, &more->x, &more->y);
1293	} else if (!more->map) {	1216	else if (!more->map)
		1217	{
1294	/* For backwards compatibility - when not dealing with tiled maps,	1218	/* For backwards compatibility - when not dealing with tiled maps,
1295	* more->map should always point to the parent.	1219	* more->map should always point to the parent.
1296	*/	1220	*/
1297	more->map = m;	1221	more->map = m;
1298	}	1222	}
1299		1223
1300	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1224	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1225	{
1301	if ( ! op->head)	1226	if (!op->head)
1302	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1227	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
		1228
1303	return NULL;	1229	return 0;
1304	}	1230	}
1305	}	1231	}
		1232
1306	CLEAR_FLAG(op,FLAG_REMOVED);	1233	CLEAR_FLAG (op, FLAG_REMOVED);
1307		1234
1308	/* Ideally, the caller figures this out. However, it complicates a lot	1235	/* Ideally, the caller figures this out. However, it complicates a lot
1309	* of areas of callers (eg, anything that uses find_free_spot would now	1236	* of areas of callers (eg, anything that uses find_free_spot would now
1310	* need extra work	1237	* need extra work
1311	*/	1238	*/
1312	op->map=get_map_from_coord(m, &op->x, &op->y);	1239	op->map = get_map_from_coord (m, &op->x, &op->y);
1313	x = op->x;	1240	x = op->x;
1314	y = op->y;	1241	y = op->y;
1315		1242
1316	/* this has to be done after we translate the coordinates.	1243	/* this has to be done after we translate the coordinates.
1317	*/	1244	*/
1318	if(op->nrof && !(flag & INS_NO_MERGE)) {	1245	if (op->nrof && !(flag & INS_NO_MERGE))
1319	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1246	for (tmp = GET_MAP_OB (op->map, x, y); tmp; tmp = tmp->above)
1320	if (CAN_MERGE(op,tmp)) {	1247	if (object::can_merge (op, tmp))
		1248	{
1321	op->nrof+=tmp->nrof;	1249	op->nrof += tmp->nrof;
1322	remove_ob(tmp);	1250	tmp->destroy ();
1323	free_object(tmp);	1251	}
		1252
		1253	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1254	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1255
		1256	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1257	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1258
		1259	if (flag & INS_BELOW_ORIGINATOR)
		1260	{
		1261	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1262	{
		1263	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1264	abort ();
		1265	}
		1266
		1267	op->above = originator;
		1268	op->below = originator->below;
		1269
		1270	if (op->below)
		1271	op->below->above = op;
		1272	else
		1273	op->ms ().bot = op;
		1274
		1275	/* since *below* originator, no need to update top */
		1276	originator->below = op;
		1277	}
		1278	else
		1279	{
		1280	/* If there are other objects, then */
		1281	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))
		1282	{
		1283	object *last = 0;
		1284
		1285	/*
		1286	* If there are multiple objects on this space, we do some trickier handling.
		1287	* We've already dealt with merging if appropriate.
		1288	* Generally, we want to put the new object on top. But if
		1289	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1290	* floor, we want to insert above that and no further.
		1291	* Also, if there are spell objects on this space, we stop processing
		1292	* once we get to them. This reduces the need to traverse over all of
		1293	* them when adding another one - this saves quite a bit of cpu time
		1294	* when lots of spells are cast in one area. Currently, it is presumed
		1295	* that flying non pickable objects are spell objects.
		1296	*/
		1297	while (top)
		1298	{
		1299	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1300	floor = top;
		1301
		1302	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1303	{
		1304	/* We insert above top, so we want this object below this */
		1305	top = top->below;
		1306	break;
		1307	}
		1308
		1309	last = top;
		1310	top = top->above;
1324	}	1311	}
1325	}
1326		1312
1327	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1313	/* Don't want top to be NULL, so set it to the last valid object */
1328	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1314	top = last;
1329	if (!QUERY_FLAG(op, FLAG_ALIVE))
1330	CLEAR_FLAG(op, FLAG_NO_STEAL);
1331		1315
1332	if (flag & INS_BELOW_ORIGINATOR) {	1316	/* We let update_position deal with figuring out what the space
1333	if (originator->map != op->map || originator->x != op->x ||	1317	* looks like instead of lots of conditions here.
1334	originator->y != op->y) {	1318	* makes things faster, and effectively the same result.
1335	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1336	abort();
1337	}
1338	op->above = originator;
1339	op->below = originator->below;
1340	if (op->below) op->below->above = op;
1341	else SET_MAP_OB(op->map, op->x, op->y, op);
1342	/* since *below* originator, no need to update top */
1343	originator->below = op;
1344	} else {
1345	/* If there are other objects, then */
1346	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1347	object *last=NULL;
1348	/*	1319	*/
1349	* If there are multiple objects on this space, we do some trickier handling.	1320
1350	* We've already dealt with merging if appropriate.	1321	/* Have object 'fall below' other objects that block view.
1351	* Generally, we want to put the new object on top. But if	1322	* Unless those objects are exits, type 66
1352	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1323	* If INS_ON_TOP is used, don't do this processing
1353	* floor, we want to insert above that and no further.	1324	* Need to find the object that in fact blocks view, otherwise
1354	* Also, if there are spell objects on this space, we stop processing	1325	* stacking is a bit odd.
1355	* once we get to them. This reduces the need to traverse over all of	1326	*/
1356	* them when adding another one - this saves quite a bit of cpu time	1327	if (!(flag & INS_ON_TOP) &&
1357	* when lots of spells are cast in one area. Currently, it is presumed	1328	(get_map_flags (op->map, 0, op->x, op->y, 0, 0) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))
1358	* that flying non pickable objects are spell objects.	1329	{
		1330	for (last = top; last != floor; last = last->below)
		1331	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1332	break;
		1333	/* Check to see if we found the object that blocks view,
		1334	* and make sure we have a below pointer for it so that
		1335	* we can get inserted below this one, which requires we
		1336	* set top to the object below us.
1359	*/	1337	*/
1360		1338	if (last && last->below && last != floor)
1361	while (top != NULL) {
1362	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1363	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1364	if (QUERY_FLAG(top, FLAG_NO_PICK)
1365	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1366	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1367	{
1368	/* We insert above top, so we want this object below this */
1369	top=top->below;
1370	break;
1371	}
1372	last = top;
1373	top = top->above;	1339	top = last->below;
1374	}	1340	}
1375	/* Don't want top to be NULL, so set it to the last valid object */
1376	top = last;
1377
1378	/* We let update_position deal with figuring out what the space
1379	* looks like instead of lots of conditions here.
1380	* makes things faster, and effectively the same result.
1381	*/
1382
1383	/* Have object 'fall below' other objects that block view.
1384	* Unless those objects are exits, type 66
1385	* If INS_ON_TOP is used, don't do this processing
1386	* Need to find the object that in fact blocks view, otherwise
1387	* stacking is a bit odd.
1388	*/
1389	if (!(flag & INS_ON_TOP) &&
1390	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1391	(op->face && !op->face->visibility)) {
1392	for (last=top; last != floor; last=last->below)
1393	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1394	/* Check to see if we found the object that blocks view,
1395	* and make sure we have a below pointer for it so that
1396	* we can get inserted below this one, which requires we
1397	* set top to the object below us.
1398	*/
1399	if (last && last->below && last != floor) top=last->below;
1400	}
1401	} /* If objects on this space */	1341	} /* If objects on this space */
		1342
1402	if (flag & INS_MAP_LOAD)	1343	if (flag & INS_MAP_LOAD)
1403	top = GET_MAP_TOP(op->map,op->x,op->y);	1344	top = GET_MAP_TOP (op->map, op->x, op->y);
		1345
1404	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1346	if (flag & INS_ABOVE_FLOOR_ONLY)
		1347	top = floor;
1405		1348
1406	/* Top is the object that our object (op) is going to get inserted above.	1349	/* Top is the object that our object (op) is going to get inserted above.
1407	*/	1350	*/
1408		1351
1409	/* First object on this space */	1352	/* First object on this space */
1410	if (!top) {	1353	if (!top)
		1354	{
1411	op->above = GET_MAP_OB(op->map, op->x, op->y);	1355	op->above = GET_MAP_OB (op->map, op->x, op->y);
		1356
		1357	if (op->above)
1412	if (op->above) op->above->below = op;	1358	op->above->below = op;
		1359
1413	op->below = NULL;	1360	op->below = 0;
1414	SET_MAP_OB(op->map, op->x, op->y, op);	1361	op->ms ().bot = op;
		1362	}
		1363	else
1415	} else { /* get inserted into the stack above top */	1364	{ /* get inserted into the stack above top */
1416	op->above = top->above;	1365	op->above = top->above;
		1366
		1367	if (op->above)
1417	if (op->above) op->above->below = op;	1368	op->above->below = op;
		1369
1418	op->below = top;	1370	op->below = top;
1419	top->above = op;	1371	top->above = op;
1420	}	1372	}
		1373
1421	if (op->above==NULL)	1374	if (!op->above)
1422	SET_MAP_TOP(op->map,op->x, op->y, op);	1375	op->ms ().top = op;
1423	} /* else not INS_BELOW_ORIGINATOR */	1376	} /* else not INS_BELOW_ORIGINATOR */
1424		1377
1425	if(op->type==PLAYER)	1378	if (op->type == PLAYER)
		1379	{
1426	op->contr->do_los=1;	1380	op->contr->do_los = 1;
		1381	++op->map->players;
		1382	op->map->touch ();
		1383	}
1427		1384
		1385	op->map->dirty = true;
		1386
1428	/* If we have a floor, we know the player, if any, will be above	1387	/* If we have a floor, we know the player, if any, will be above
1429	* it, so save a few ticks and start from there.	1388	* it, so save a few ticks and start from there.
1430	*/	1389	*/
1431	if (!(flag & INS_MAP_LOAD))	1390	if (!(flag & INS_MAP_LOAD))
1432	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1391	if (object *pl = op->ms ().player ())
1433	if (tmp->type == PLAYER)	1392	if (pl->contr->ns)
1434	tmp->contr->socket.update_look=1;	1393	pl->contr->ns->floorbox_update ();
1435	}
1436		1394
1437	/* If this object glows, it may affect lighting conditions that are	1395	/* If this object glows, it may affect lighting conditions that are
1438	* visible to others on this map. But update_all_los is really	1396	* visible to others on this map. But update_all_los is really
1439	* an inefficient way to do this, as it means los for all players	1397	* an inefficient way to do this, as it means los for all players
1440	* on the map will get recalculated. The players could very well	1398	* on the map will get recalculated. The players could very well
1441	* be far away from this change and not affected in any way -	1399	* be far away from this change and not affected in any way -
1442	* this should get redone to only look for players within range,	1400	* this should get redone to only look for players within range,
1443	* or just updating the P_NEED_UPDATE for spaces within this area	1401	* or just updating the P_UPTODATE for spaces within this area
1444	* of effect may be sufficient.	1402	* of effect may be sufficient.
1445	*/	1403	*/
1446	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1404	if (op->map->darkness && (op->glow_radius != 0))
1447	update_all_los(op->map, op->x, op->y);	1405	update_all_los (op->map, op->x, op->y);
1448		1406
1449
1450	/* updates flags (blocked, alive, no magic, etc) for this map space */	1407	/* updates flags (blocked, alive, no magic, etc) for this map space */
1451	update_object(op,UP_OBJ_INSERT);	1408	update_object (op, UP_OBJ_INSERT);
1452		1409
		1410	INVOKE_OBJECT (INSERT, op);
1453		1411
1454	/* Don't know if moving this to the end will break anything. However,	1412	/* Don't know if moving this to the end will break anything. However,
1455	* we want to have update_look set above before calling this.	1413	* we want to have floorbox_update called before calling this.
1456	*	1414	*
1457	* check_move_on() must be after this because code called from	1415	* check_move_on() must be after this because code called from
1458	* check_move_on() depends on correct map flags (so functions like	1416	* check_move_on() depends on correct map flags (so functions like
1459	* blocked() and wall() work properly), and these flags are updated by	1417	* blocked() and wall() work properly), and these flags are updated by
1460	* update_object().	1418	* update_object().
1461	*/	1419	*/
1462		1420
1463	/* if this is not the head or flag has been passed, don't check walk on status */	1421	/* if this is not the head or flag has been passed, don't check walk on status */
1464
1465	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1422	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1423	{
1466	if (check_move_on(op, originator))	1424	if (check_move_on (op, originator))
1467	return NULL;	1425	return 0;
1468		1426
1469	/* If we are a multi part object, lets work our way through the check	1427	/* If we are a multi part object, lets work our way through the check
1470	* walk on's.	1428	* walk on's.
1471	*/	1429	*/
1472	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1430	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1473	if (check_move_on (tmp, originator))	1431	if (check_move_on (tmp, originator))
1474	return NULL;	1432	return 0;
1475	}	1433	}
		1434
1476	return op;	1435	return op;
1477	}	1436	}
1478		1437
1479	/* this function inserts an object in the map, but if it	1438	/* this function inserts an object in the map, but if it
1480	* finds an object of its own type, it'll remove that one first.	1439	* finds an object of its own type, it'll remove that one first.
1481	* op is the object to insert it under: supplies x and the map.	1440	* op is the object to insert it under: supplies x and the map.
1482	*/	1441	*/
		1442	void
1483	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1443	replace_insert_ob_in_map (const char *arch_string, object *op)
1484	object *tmp;	1444	{
1485	object *tmp1;	1445	object *tmp, *tmp1;
1486		1446
1487	/* first search for itself and remove any old instances */	1447	/* first search for itself and remove any old instances */
1488		1448
1489	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1449	for (tmp = op->ms ().bot; tmp; tmp = tmp->above)
1490	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1450	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1491	remove_ob(tmp);	1451	tmp->destroy ();
1492	free_object(tmp);
1493	}
1494	}
1495		1452
1496	tmp1=arch_to_object(find_archetype(arch_string));	1453	tmp1 = arch_to_object (archetype::find (arch_string));
1497		1454
1498		1455	tmp1->x = op->x;
1499	tmp1->x = op->x; tmp1->y = op->y;	1456	tmp1->y = op->y;
1500	insert_ob_in_map(tmp1,op->map,op,0);	1457	insert_ob_in_map (tmp1, op->map, op, 0);
1501	}	1458	}
		1459
		1460	object *
		1461	object::insert_at (object *where, object *originator, int flags)
		1462	{
		1463	where->map->insert (this, where->x, where->y, originator, flags);
		1464	}
1502		1465
1503	/*	1466	/*
1504	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1467	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1505	* is returned contains nr objects, and the remaining parts contains	1468	* is returned contains nr objects, and the remaining parts contains
1506	* the rest (or is removed and freed if that number is 0).	1469	* the rest (or is removed and freed if that number is 0).
1507	* On failure, NULL is returned, and the reason put into the	1470	* On failure, NULL is returned, and the reason put into the
1508	* global static errmsg array.	1471	* global static errmsg array.
1509	*/	1472	*/
1510		1473	object *
1511	object *get_split_ob(object *orig_ob, uint32 nr) {	1474	get_split_ob (object *orig_ob, uint32 nr)
		1475	{
1512	object *newob;	1476	object *newob;
1513	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1477	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1514		1478
1515	if(orig_ob->nrof<nr) {	1479	if (orig_ob->nrof < nr)
1516	sprintf(errmsg,"There are only %d %ss.",	1480	{
1517	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1481	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1518	return NULL;	1482	return NULL;
1519	}	1483	}
		1484
1520	newob = object_create_clone(orig_ob);	1485	newob = object_create_clone (orig_ob);
		1486
1521	if((orig_ob->nrof-=nr)<1) {	1487	if ((orig_ob->nrof -= nr) < 1)
1522	if ( ! is_removed)	1488	orig_ob->destroy (1);
1523	remove_ob(orig_ob);
1524	free_object2(orig_ob, 1);
1525	}
1526	else if ( ! is_removed) {	1489	else if (!is_removed)
		1490	{
1527	if(orig_ob->env!=NULL)	1491	if (orig_ob->env != NULL)
1528	sub_weight (orig_ob->env,orig_ob->weight*nr);	1492	sub_weight (orig_ob->env, orig_ob->weight * nr);
1529	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1493	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1494	{
1530	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1495	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1531	LOG(llevDebug,
1532	"Error, Tried to split object whose map is not in memory.\n");	1496	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1533	return NULL;	1497	return NULL;
1534	}	1498	}
1535	}	1499	}
		1500
1536	newob->nrof=nr;	1501	newob->nrof = nr;
1537		1502
1538	return newob;	1503	return newob;
1539	}	1504	}
1540		1505
1541	/*	1506	/*
1542	* decrease_ob_nr(object, number) decreases a specified number from	1507	* decrease_ob_nr(object, number) decreases a specified number from
1543	* the amount of an object. If the amount reaches 0, the object	1508	* the amount of an object. If the amount reaches 0, the object
1544	* is subsequently removed and freed.	1509	* is subsequently removed and freed.
1545	*	1510	*
1546	* Return value: 'op' if something is left, NULL if the amount reached 0	1511	* Return value: 'op' if something is left, NULL if the amount reached 0
1547	*/	1512	*/
1548		1513
		1514	object *
1549	object *decrease_ob_nr (object *op, uint32 i)	1515	decrease_ob_nr (object *op, uint32 i)
1550	{	1516	{
1551	object *tmp;	1517	object *tmp;
1552	player *pl;
1553		1518
1554	if (i == 0) /* objects with op->nrof require this check */	1519	if (i == 0) /* objects with op->nrof require this check */
1555	return op;	1520	return op;
1556		1521
1557	if (i > op->nrof)	1522	if (i > op->nrof)
1558	i = op->nrof;	1523	i = op->nrof;
1559		1524
1560	if (QUERY_FLAG (op, FLAG_REMOVED))	1525	if (QUERY_FLAG (op, FLAG_REMOVED))
		1526	op->nrof -= i;
		1527	else if (op->env)
		1528	{
		1529	/* is this object in the players inventory, or sub container
		1530	* therein?
		1531	*/
		1532	tmp = op->in_player ();
		1533	/* nope. Is this a container the player has opened?
		1534	* If so, set tmp to that player.
		1535	* IMO, searching through all the players will mostly
		1536	* likely be quicker than following op->env to the map,
		1537	* and then searching the map for a player.
		1538	*/
		1539	if (!tmp)
		1540	for_all_players (pl)
		1541	if (pl->ob->container == op->env)
		1542	{
		1543	tmp = pl->ob;
		1544	break;
		1545	}
		1546
		1547	if (i < op->nrof)
		1548	{
		1549	sub_weight (op->env, op->weight * i);
		1550	op->nrof -= i;
		1551	if (tmp)
		1552	esrv_send_item (tmp, op);
		1553	}
		1554	else
		1555	{
		1556	op->remove ();
		1557	op->nrof = 0;
		1558	if (tmp)
		1559	esrv_del_item (tmp->contr, op->count);
		1560	}
1561	{	1561	}
		1562	else
		1563	{
		1564	object *above = op->above;
		1565
		1566	if (i < op->nrof)
1562	op->nrof -= i;	1567	op->nrof -= i;
1563	}	1568	else
1564	else if (op->env != NULL)
1565	{
1566	/* is this object in the players inventory, or sub container
1567	* therein?
1568	*/
1569	tmp = is_player_inv (op->env);
1570	/* nope. Is this a container the player has opened?
1571	* If so, set tmp to that player.
1572	* IMO, searching through all the players will mostly
1573	* likely be quicker than following op->env to the map,
1574	* and then searching the map for a player.
1575	*/
1576	if (!tmp) {
1577	for (pl=first_player; pl; pl=pl->next)
1578	if (pl->ob->container == op->env) break;
1579	if (pl) tmp=pl->ob;
1580	else tmp=NULL;
1581	}	1569	{
1582
1583	if (i < op->nrof) {
1584	sub_weight (op->env, op->weight * i);
1585	op->nrof -= i;
1586	if (tmp) {
1587	esrv_send_item(tmp, op);
1588	}
1589	} else {
1590	remove_ob (op);	1570	op->remove ();
1591	op->nrof = 0;	1571	op->nrof = 0;
1592	if (tmp) {
1593	esrv_del_item(tmp->contr, op->count);
1594	}	1572	}
1595	}
1596	}
1597	else
1598	{
1599	object *above = op->above;
1600		1573
1601	if (i < op->nrof) {
1602	op->nrof -= i;
1603	} else {
1604	remove_ob (op);
1605	op->nrof = 0;
1606	}
1607	/* Since we just removed op, op->above is null */	1574	/* Since we just removed op, op->above is null */
1608	for (tmp = above; tmp != NULL; tmp = tmp->above)	1575	for (tmp = above; tmp; tmp = tmp->above)
1609	if (tmp->type == PLAYER) {	1576	if (tmp->type == PLAYER)
		1577	{
1610	if (op->nrof)	1578	if (op->nrof)
1611	esrv_send_item(tmp, op);	1579	esrv_send_item (tmp, op);
1612	else	1580	else
1613	esrv_del_item(tmp->contr, op->count);	1581	esrv_del_item (tmp->contr, op->count);
1614	}	1582	}
1615	}	1583	}
1616		1584
1617	if (op->nrof) {	1585	if (op->nrof)
1618	return op;	1586	return op;
1619	} else {	1587	else
1620	free_object (op);	1588	{
		1589	op->destroy ();
1621	return NULL;	1590	return 0;
1622	}	1591	}
1623	}	1592	}
1624		1593
1625	/*	1594	/*
1626	* add_weight(object, weight) adds the specified weight to an object,	1595	* add_weight(object, weight) adds the specified weight to an object,
1627	* and also updates how much the environment(s) is/are carrying.	1596	* and also updates how much the environment(s) is/are carrying.
1628	*/	1597	*/
1629		1598
		1599	void
1630	void add_weight (object *op, signed long weight) {	1600	add_weight (object *op, signed long weight)
		1601	{
1631	while (op!=NULL) {	1602	while (op != NULL)
		1603	{
1632	if (op->type == CONTAINER) {	1604	if (op->type == CONTAINER)
1633	weight=(signed long)(weight*(100-op->stats.Str)/100);	1605	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1634	}	1606
1635	op->carrying+=weight;	1607	op->carrying += weight;
1636	op=op->env;	1608	op = op->env;
1637	}	1609	}
1638	}	1610	}
1639		1611
		1612	object *
		1613	insert_ob_in_ob (object *op, object *where)
		1614	{
		1615	if (!where)
		1616	{
		1617	char *dump = dump_object (op);
		1618	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1619	free (dump);
		1620	return op;
		1621	}
		1622
		1623	if (where->head)
		1624	{
		1625	LOG (llevDebug, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1626	where = where->head;
		1627	}
		1628
		1629	return where->insert (op);
		1630	}
		1631
1640	/*	1632	/*
1641	* insert_ob_in_ob(op,environment):	1633	* env->insert (op)
1642	* This function inserts the object op in the linked list	1634	* This function inserts the object op in the linked list
1643	* inside the object environment.	1635	* inside the object environment.
1644	*	1636	*
1645	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1646	* the inventory at the last position or next to other objects of the same
1647	* type.
1648	* Frank: Now sorted by type, archetype and magic!
1649	*
1650	* The function returns now pointer to inserted item, and return value can	1637	* The function returns now pointer to inserted item, and return value can
1651	* be != op, if items are merged. -Tero	1638	* be != op, if items are merged. -Tero
1652	*/	1639	*/
1653		1640
1654	object *insert_ob_in_ob(object *op,object *where) {	1641	object *
		1642	object::insert (object *op)
		1643	{
1655	object *tmp, *otmp;	1644	object *tmp, *otmp;
1656		1645
1657	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1646	if (!QUERY_FLAG (op, FLAG_REMOVED))
1658	dump_object(op);	1647	op->remove ();
1659	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1648
1660	return op;
1661	}
1662	if(where==NULL) {
1663	dump_object(op);
1664	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1665	return op;
1666	}
1667	if (where->head) {
1668	LOG(llevDebug,
1669	"Warning: Tried to insert object wrong part of multipart object.\n");
1670	where = where->head;
1671	}
1672	if (op->more) {	1649	if (op->more)
		1650	{
1673	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1651	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1674	&op->name, op->count);
1675	return op;	1652	return op;
1676	}	1653	}
		1654
1677	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1655	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1678	CLEAR_FLAG(op, FLAG_REMOVED);	1656	CLEAR_FLAG (op, FLAG_REMOVED);
1679	if(op->nrof) {	1657	if (op->nrof)
		1658	{
1680	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1659	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1681	if ( CAN_MERGE(tmp,op) ) {	1660	if (object::can_merge (tmp, op))
		1661	{
1682	/* return the original object and remove inserted object	1662	/* return the original object and remove inserted object
1683	(client needs the original object) */	1663	(client needs the original object) */
1684	tmp->nrof += op->nrof;	1664	tmp->nrof += op->nrof;
1685	/* Weight handling gets pretty funky. Since we are adding to	1665	/* Weight handling gets pretty funky. Since we are adding to
1686	* tmp->nrof, we need to increase the weight.	1666	* tmp->nrof, we need to increase the weight.
1687	*/	1667	*/
1688	add_weight (where, op->weight*op->nrof);	1668	add_weight (this, op->weight * op->nrof);
1689	SET_FLAG(op, FLAG_REMOVED);	1669	SET_FLAG (op, FLAG_REMOVED);
1690	free_object(op); /* free the inserted object */	1670	op->destroy (); /* free the inserted object */
1691	op = tmp;	1671	op = tmp;
1692	remove_ob (op); /* and fix old object's links */	1672	op->remove (); /* and fix old object's links */
1693	CLEAR_FLAG(op, FLAG_REMOVED);	1673	CLEAR_FLAG (op, FLAG_REMOVED);
1694	break;	1674	break;
1695	}	1675	}
1696		1676
1697	/* I assume combined objects have no inventory	1677	/* I assume combined objects have no inventory
1698	* We add the weight - this object could have just been removed	1678	* We add the weight - this object could have just been removed
1699	* (if it was possible to merge). calling remove_ob will subtract	1679	* (if it was possible to merge). calling remove_ob will subtract
1700	* the weight, so we need to add it in again, since we actually do	1680	* the weight, so we need to add it in again, since we actually do
1701	* the linking below	1681	* the linking below
1702	*/	1682	*/
1703	add_weight (where, op->weight*op->nrof);	1683	add_weight (this, op->weight * op->nrof);
		1684	}
1704	} else	1685	else
1705	add_weight (where, (op->weight+op->carrying));	1686	add_weight (this, (op->weight + op->carrying));
1706		1687
1707	otmp=is_player_inv(where);	1688	otmp = this->in_player ();
1708	if (otmp&&otmp->contr!=NULL) {	1689	if (otmp && otmp->contr)
1709	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1690	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1710	fix_player(otmp);	1691	otmp->update_stats ();
1711	}
1712		1692
1713	op->map=NULL;	1693	op->map = 0;
1714	op->env=where;	1694	op->env = this;
1715	op->above=NULL;	1695	op->above = 0;
1716	op->below=NULL;	1696	op->below = 0;
1717	op->x=0,op->y=0;	1697	op->x = 0, op->y = 0;
1718		1698
1719	/* reset the light list and los of the players on the map */	1699	/* reset the light list and los of the players on the map */
1720	if((op->glow_radius!=0)&&where->map)	1700	if ((op->glow_radius != 0) && map)
1721	{	1701	{
1722	#ifdef DEBUG_LIGHTS	1702	#ifdef DEBUG_LIGHTS
1723	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1703	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1724	op->name);
1725	#endif /* DEBUG_LIGHTS */	1704	#endif /* DEBUG_LIGHTS */
1726	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1705	if (map->darkness)
		1706	update_all_los (map, x, y);
1727	}	1707	}
1728		1708
1729	/* Client has no idea of ordering so lets not bother ordering it here.	1709	/* Client has no idea of ordering so lets not bother ordering it here.
1730	* It sure simplifies this function...	1710	* It sure simplifies this function...
1731	*/	1711	*/
1732	if (where->inv==NULL)	1712	if (!inv)
1733	where->inv=op;	1713	inv = op;
1734	else {	1714	else
		1715	{
1735	op->below = where->inv;	1716	op->below = inv;
1736	op->below->above = op;	1717	op->below->above = op;
1737	where->inv = op;	1718	inv = op;
1738	}	1719	}
		1720
		1721	INVOKE_OBJECT (INSERT, this);
		1722
1739	return op;	1723	return op;
1740	}	1724	}
1741		1725
1742	/*	1726	/*
1743	* Checks if any objects has a move_type that matches objects	1727	* Checks if any objects has a move_type that matches objects
…		…
1757	*	1741	*
1758	* MSW 2001-07-08: Check all objects on space, not just those below	1742	* MSW 2001-07-08: Check all objects on space, not just those below
1759	* object being inserted. insert_ob_in_map may not put new objects	1743	* object being inserted. insert_ob_in_map may not put new objects
1760	* on top.	1744	* on top.
1761	*/	1745	*/
1762		1746	int
1763	int check_move_on (object *op, object *originator)	1747	check_move_on (object *op, object *originator)
1764	{	1748	{
1765	object *tmp;	1749	object *tmp;
1766	tag_t tag;
1767	mapstruct *m=op->map;	1750	maptile *m = op->map;
1768	int x=op->x, y=op->y;	1751	int x = op->x, y = op->y;
		1752
1769	MoveType move_on, move_slow, move_block;	1753	MoveType move_on, move_slow, move_block;
1770		1754
1771	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1755	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1772	return 0;	1756	return 0;
1773		1757
1774	tag = op->count;
1775
1776	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1758	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1777	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1759	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1778	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1760	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1779		1761
1780	/* if nothing on this space will slow op down or be applied,	1762	/* if nothing on this space will slow op down or be applied,
1781	* no need to do checking below. have to make sure move_type	1763	* no need to do checking below. have to make sure move_type
1782	* is set, as lots of objects don't have it set - we treat that	1764	* is set, as lots of objects don't have it set - we treat that
1783	* as walking.	1765	* as walking.
1784	*/	1766	*/
1785	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1767	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1786	return 0;	1768	return 0;
1787		1769
1788	/* This is basically inverse logic of that below - basically,	1770	/* This is basically inverse logic of that below - basically,
1789	* if the object can avoid the move on or slow move, they do so,	1771	* if the object can avoid the move on or slow move, they do so,
1790	* but can't do it if the alternate movement they are using is	1772	* but can't do it if the alternate movement they are using is
1791	* blocked. Logic on this seems confusing, but does seem correct.	1773	* blocked. Logic on this seems confusing, but does seem correct.
1792	*/	1774	*/
1793	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1775	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1794	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1776	return 0;
1795		1777
1796	/* The objects have to be checked from top to bottom.	1778	/* The objects have to be checked from top to bottom.
1797	* Hence, we first go to the top:	1779	* Hence, we first go to the top:
1798	*/	1780	*/
1799		1781
1800	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1782	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1801	tmp->above!=NULL; tmp=tmp->above) {	1783	{
1802	/* Trim the search when we find the first other spell effect	1784	/* Trim the search when we find the first other spell effect
1803	* this helps performance so that if a space has 50 spell objects,	1785	* this helps performance so that if a space has 50 spell objects,
1804	* we don't need to check all of them.	1786	* we don't need to check all of them.
1805	*/	1787	*/
1806	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1788	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1789	break;
		1790	}
		1791
		1792	for (; tmp; tmp = tmp->below)
1807	}	1793	{
1808	for(;tmp!=NULL; tmp=tmp->below) {	1794	if (tmp == op)
1809	if (tmp == op) continue; /* Can't apply yourself */	1795	continue; /* Can't apply yourself */
1810		1796
1811	/* Check to see if one of the movement types should be slowed down.	1797	/* Check to see if one of the movement types should be slowed down.
1812	* Second check makes sure that the movement types not being slowed	1798	* Second check makes sure that the movement types not being slowed
1813	* (~slow_move) is not blocked on this space - just because the	1799	* (~slow_move) is not blocked on this space - just because the
1814	* space doesn't slow down swimming (for example), if you can't actually	1800	* space doesn't slow down swimming (for example), if you can't actually
1815	* swim on that space, can't use it to avoid the penalty.	1801	* swim on that space, can't use it to avoid the penalty.
1816	*/	1802	*/
1817	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1803	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1804	{
1818	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1805	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1819	((op->move_type & tmp->move_slow) &&
1820	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1806	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1807	{
1821		1808
1822	float diff;	1809	float
1823
1824	diff = tmp->move_slow_penalty*FABS(op->speed);	1810	diff = tmp->move_slow_penalty * FABS (op->speed);
		1811
1825	if (op->type == PLAYER) {	1812	if (op->type == PLAYER)
1826	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1813	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1827	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1814	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1828	diff /= 4.0;	1815	diff /= 4.0;
1829	}	1816
1830	}
1831	op->speed_left -= diff;	1817	op->speed_left -= diff;
1832	}	1818	}
1833	}	1819	}
1834		1820
1835	/* Basically same logic as above, except now for actual apply. */	1821	/* Basically same logic as above, except now for actual apply. */
1836	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1822	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1837	((op->move_type & tmp->move_on) &&
1838	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1823	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1839		1824	{
1840	move_apply(tmp, op, originator);	1825	move_apply (tmp, op, originator);
		1826
1841	if (was_destroyed (op, tag))	1827	if (op->destroyed ())
1842	return 1;	1828	return 1;
1843		1829
1844	/* what the person/creature stepped onto has moved the object	1830	/* what the person/creature stepped onto has moved the object
1845	* someplace new. Don't process any further - if we did,	1831	* someplace new. Don't process any further - if we did,
1846	* have a feeling strange problems would result.	1832	* have a feeling strange problems would result.
1847	*/	1833	*/
1848	if (op->map != m || op->x != x || op->y != y) return 0;	1834	if (op->map != m || op->x != x || op->y != y)
		1835	return 0;
1849	}	1836	}
1850	}	1837	}
		1838
1851	return 0;	1839	return 0;
1852	}	1840	}
1853		1841
1854	/*	1842	/*
1855	* present_arch(arch, map, x, y) searches for any objects with	1843	* present_arch(arch, map, x, y) searches for any objects with
1856	* a matching archetype at the given map and coordinates.	1844	* a matching archetype at the given map and coordinates.
1857	* The first matching object is returned, or NULL if none.	1845	* The first matching object is returned, or NULL if none.
1858	*/	1846	*/
1859		1847	object *
1860	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1848	present_arch (const archetype *at, maptile *m, int x, int y)
1861	object *tmp;	1849	{
1862	if(m==NULL || out_of_map(m,x,y)) {	1850	if (!m || out_of_map (m, x, y))
		1851	{
1863	LOG(llevError,"Present_arch called outside map.\n");	1852	LOG (llevError, "Present_arch called outside map.\n");
1864	return NULL;	1853	return NULL;
1865	}	1854	}
1866	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1855
		1856	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1867	if(tmp->arch == at)	1857	if (tmp->arch == at)
1868	return tmp;	1858	return tmp;
		1859
1869	return NULL;	1860	return NULL;
1870	}	1861	}
1871		1862
1872	/*	1863	/*
1873	* present(type, map, x, y) searches for any objects with	1864	* present(type, map, x, y) searches for any objects with
1874	* a matching type variable at the given map and coordinates.	1865	* a matching type variable at the given map and coordinates.
1875	* The first matching object is returned, or NULL if none.	1866	* The first matching object is returned, or NULL if none.
1876	*/	1867	*/
1877		1868	object *
1878	object *present(unsigned char type,mapstruct *m, int x,int y) {	1869	present (unsigned char type, maptile *m, int x, int y)
1879	object *tmp;	1870	{
1880	if(out_of_map(m,x,y)) {	1871	if (out_of_map (m, x, y))
		1872	{
1881	LOG(llevError,"Present called outside map.\n");	1873	LOG (llevError, "Present called outside map.\n");
1882	return NULL;	1874	return NULL;
1883	}	1875	}
1884	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1876
		1877	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1885	if(tmp->type==type)	1878	if (tmp->type == type)
1886	return tmp;	1879	return tmp;
		1880
1887	return NULL;	1881	return NULL;
1888	}	1882	}
1889		1883
1890	/*	1884	/*
1891	* present_in_ob(type, object) searches for any objects with	1885	* present_in_ob(type, object) searches for any objects with
1892	* a matching type variable in the inventory of the given object.	1886	* a matching type variable in the inventory of the given object.
1893	* The first matching object is returned, or NULL if none.	1887	* The first matching object is returned, or NULL if none.
1894	*/	1888	*/
1895		1889	object *
1896	object *present_in_ob(unsigned char type, const object *op) {	1890	present_in_ob (unsigned char type, const object *op)
1897	object *tmp;	1891	{
1898	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1892	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1899	if(tmp->type==type)	1893	if (tmp->type == type)
1900	return tmp;	1894	return tmp;
		1895
1901	return NULL;	1896	return NULL;
1902	}	1897	}
1903		1898
1904	/*	1899	/*
1905	* present_in_ob (type, str, object) searches for any objects with	1900	* present_in_ob (type, str, object) searches for any objects with
…		…
1913	* str is the string to match against. Note that we match against	1908	* str is the string to match against. Note that we match against
1914	* the object name, not the archetype name. this is so that the	1909	* the object name, not the archetype name. this is so that the
1915	* spell code can use one object type (force), but change it's name	1910	* spell code can use one object type (force), but change it's name
1916	* to be unique.	1911	* to be unique.
1917	*/	1912	*/
1918		1913	object *
1919	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1914	present_in_ob_by_name (int type, const char *str, const object *op)
1920	object *tmp;	1915	{
1921
1922	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1916	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1923	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1917	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1924	return tmp;	1918	return tmp;
1925	}	1919
1926	return NULL;	1920	return 0;
1927	}	1921	}
1928		1922
1929	/*	1923	/*
1930	* present_arch_in_ob(archetype, object) searches for any objects with	1924	* present_arch_in_ob(archetype, object) searches for any objects with
1931	* a matching archetype in the inventory of the given object.	1925	* a matching archetype in the inventory of the given object.
1932	* The first matching object is returned, or NULL if none.	1926	* The first matching object is returned, or NULL if none.
1933	*/	1927	*/
1934		1928	object *
1935	object *present_arch_in_ob(const archetype *at, const object *op) {	1929	present_arch_in_ob (const archetype *at, const object *op)
1936	object *tmp;	1930	{
1937	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1931	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1938	if( tmp->arch == at)	1932	if (tmp->arch == at)
1939	return tmp;	1933	return tmp;
		1934
1940	return NULL;	1935	return NULL;
1941	}	1936	}
1942		1937
1943	/*	1938	/*
1944	* activate recursively a flag on an object inventory	1939	* activate recursively a flag on an object inventory
1945	*/	1940	*/
		1941	void
1946	void flag_inv(object*op, int flag){	1942	flag_inv (object *op, int flag)
1947	object *tmp;	1943	{
1948	if(op->inv)	1944	if (op->inv)
1949	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1945	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1946	{
1950	SET_FLAG(tmp, flag);	1947	SET_FLAG (tmp, flag);
1951	flag_inv(tmp,flag);	1948	flag_inv (tmp, flag);
1952	}	1949	}
		1950	}
		1951
1953	}/*	1952	/*
1954	* desactivate recursively a flag on an object inventory	1953	* deactivate recursively a flag on an object inventory
1955	*/	1954	*/
		1955	void
1956	void unflag_inv(object*op, int flag){	1956	unflag_inv (object *op, int flag)
1957	object *tmp;	1957	{
1958	if(op->inv)	1958	if (op->inv)
1959	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1959	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1960	{
1960	CLEAR_FLAG(tmp, flag);	1961	CLEAR_FLAG (tmp, flag);
1961	unflag_inv(tmp,flag);	1962	unflag_inv (tmp, flag);
1962	}	1963	}
1963	}	1964	}
1964		1965
1965	/*	1966	/*
1966	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in	1967	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1967	* all it's inventory (recursively).	1968	* all it's inventory (recursively).
1968	* If checksums are used, a player will get set_cheat called for	1969	* If checksums are used, a player will get set_cheat called for
1969	* him/her-self and all object carried by a call to this function.	1970	* him/her-self and all object carried by a call to this function.
1970	*/	1971	*/
1971		1972	void
1972	void set_cheat(object *op) {	1973	set_cheat (object *op)
		1974	{
1973	SET_FLAG(op, FLAG_WAS_WIZ);	1975	SET_FLAG (op, FLAG_WAS_WIZ);
1974	flag_inv(op, FLAG_WAS_WIZ);	1976	flag_inv (op, FLAG_WAS_WIZ);
1975	}	1977	}
1976		1978
1977	/*	1979	/*
1978	* find_free_spot(object, map, x, y, start, stop) will search for	1980	* find_free_spot(object, map, x, y, start, stop) will search for
1979	* a spot at the given map and coordinates which will be able to contain	1981	* a spot at the given map and coordinates which will be able to contain
…		…
1993	* because arch_blocked (now ob_blocked) needs to know the movement type	1995	* because arch_blocked (now ob_blocked) needs to know the movement type
1994	* to know if the space in question will block the object. We can't use	1996	* to know if the space in question will block the object. We can't use
1995	* the archetype because that isn't correct if the monster has been	1997	* the archetype because that isn't correct if the monster has been
1996	* customized, changed states, etc.	1998	* customized, changed states, etc.
1997	*/	1999	*/
1998		2000	int
1999	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	2001	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		2002	{
2000	int i,index=0, flag;	2003	int index = 0, flag;
2001	static int altern[SIZEOFFREE];	2004	int altern[SIZEOFFREE];
2002		2005
2003	for(i=start;i<stop;i++) {	2006	for (int i = start; i < stop; i++)
		2007	{
2004	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2008	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2005	if(!flag)	2009	if (!flag)
2006	altern[index++]=i;	2010	altern [index++] = i;
2007		2011
2008	/* Basically, if we find a wall on a space, we cut down the search size.	2012	/* Basically, if we find a wall on a space, we cut down the search size.
2009	* In this way, we won't return spaces that are on another side of a wall.	2013	* In this way, we won't return spaces that are on another side of a wall.
2010	* This mostly work, but it cuts down the search size in all directions -	2014	* This mostly work, but it cuts down the search size in all directions -
2011	* if the space being examined only has a wall to the north and empty	2015	* if the space being examined only has a wall to the north and empty
2012	* spaces in all the other directions, this will reduce the search space	2016	* spaces in all the other directions, this will reduce the search space
2013	* to only the spaces immediately surrounding the target area, and	2017	* to only the spaces immediately surrounding the target area, and
2014	* won't look 2 spaces south of the target space.	2018	* won't look 2 spaces south of the target space.
2015	*/	2019	*/
2016	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2020	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2017	stop=maxfree[i];	2021	stop = maxfree[i];
2018	}	2022	}
2019	if(!index) return -1;	2023
		2024	if (!index)
		2025	return -1;
		2026
2020	return altern[RANDOM()%index];	2027	return altern[RANDOM () % index];
2021	}	2028	}
2022		2029
2023	/*	2030	/*
2024	* find_first_free_spot(archetype, mapstruct, x, y) works like	2031	* find_first_free_spot(archetype, maptile, x, y) works like
2025	* find_free_spot(), but it will search max number of squares.	2032	* find_free_spot(), but it will search max number of squares.
2026	* But it will return the first available spot, not a random choice.	2033	* But it will return the first available spot, not a random choice.
2027	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2034	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2028	*/	2035	*/
2029		2036	int
2030	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2037	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2031	int i;	2038	{
2032	for(i=0;i<SIZEOFFREE;i++) {	2039	for (int i = 0; i < SIZEOFFREE; i++)
2033	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2040	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2034	return i;	2041	return i;
2035	}	2042
2036	return -1;	2043	return -1;
2037	}	2044	}
2038		2045
2039	/*	2046	/*
2040	* The function permute(arr, begin, end) randomly reorders the array	2047	* The function permute(arr, begin, end) randomly reorders the array
2041	* arr[begin..end-1].	2048	* arr[begin..end-1].
		2049	* now uses a fisher-yates shuffle, old permute was broken
2042	*/	2050	*/
		2051	static void
2043	static void permute(int *arr, int begin, int end)	2052	permute (int *arr, int begin, int end)
2044	{	2053	{
2045	int i, j, tmp, len;	2054	arr += begin;
		2055	end -= begin;
2046		2056
2047	len = end-begin;	2057	while (--end)
2048	for(i = begin; i < end; i++)	2058	swap (arr [end], arr [RANDOM () % (end + 1)]);
2049	{
2050	j = begin+RANDOM()%len;
2051
2052	tmp = arr[i];
2053	arr[i] = arr[j];
2054	arr[j] = tmp;
2055	}
2056	}	2059	}
2057		2060
2058	/* new function to make monster searching more efficient, and effective!	2061	/* new function to make monster searching more efficient, and effective!
2059	* This basically returns a randomized array (in the passed pointer) of	2062	* This basically returns a randomized array (in the passed pointer) of
2060	* the spaces to find monsters. In this way, it won't always look for	2063	* the spaces to find monsters. In this way, it won't always look for
2061	* monsters to the north first. However, the size of the array passed	2064	* monsters to the north first. However, the size of the array passed
2062	* covers all the spaces, so within that size, all the spaces within	2065	* covers all the spaces, so within that size, all the spaces within
2063	* the 3x3 area will be searched, just not in a predictable order.	2066	* the 3x3 area will be searched, just not in a predictable order.
2064	*/	2067	*/
		2068	void
2065	void get_search_arr(int *search_arr)	2069	get_search_arr (int *search_arr)
2066	{	2070	{
2067	int i;	2071	int i;
2068		2072
2069	for(i = 0; i < SIZEOFFREE; i++)	2073	for (i = 0; i < SIZEOFFREE; i++)
2070	{
2071	search_arr[i] = i;	2074	search_arr[i] = i;
2072	}
2073		2075
2074	permute(search_arr, 1, SIZEOFFREE1+1);	2076	permute (search_arr, 1, SIZEOFFREE1 + 1);
2075	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2077	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2076	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2078	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2077	}	2079	}
2078		2080
2079	/*	2081	/*
2080	* find_dir(map, x, y, exclude) will search some close squares in the	2082	* find_dir(map, x, y, exclude) will search some close squares in the
2081	* given map at the given coordinates for live objects.	2083	* given map at the given coordinates for live objects.
…		…
2086	* Perhaps incorrectly, but I'm making the assumption that exclude	2088	* Perhaps incorrectly, but I'm making the assumption that exclude
2087	* is actually want is going to try and move there. We need this info	2089	* is actually want is going to try and move there. We need this info
2088	* because we have to know what movement the thing looking to move	2090	* because we have to know what movement the thing looking to move
2089	* there is capable of.	2091	* there is capable of.
2090	*/	2092	*/
2091		2093	int
2092	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2094	find_dir (maptile *m, int x, int y, object *exclude)
		2095	{
2093	int i,max=SIZEOFFREE, mflags;	2096	int i, max = SIZEOFFREE, mflags;
		2097
2094	sint16 nx, ny;	2098	sint16 nx, ny;
2095	object *tmp;	2099	object *tmp;
2096	mapstruct *mp;	2100	maptile *mp;
		2101
2097	MoveType blocked, move_type;	2102	MoveType blocked, move_type;
2098		2103
2099	if (exclude && exclude->head) {	2104	if (exclude && exclude->head)
		2105	{
2100	exclude = exclude->head;	2106	exclude = exclude->head;
2101	move_type = exclude->move_type;	2107	move_type = exclude->move_type;
2102	} else {	2108	}
		2109	else
		2110	{
2103	/* If we don't have anything, presume it can use all movement types. */	2111	/* If we don't have anything, presume it can use all movement types. */
2104	move_type=MOVE_ALL;	2112	move_type = MOVE_ALL;
		2113	}
		2114
		2115	for (i = 1; i < max; i++)
2105	}	2116	{
2106
2107	for(i=1;i<max;i++) {
2108	mp = m;	2117	mp = m;
2109	nx = x + freearr_x[i];	2118	nx = x + freearr_x[i];
2110	ny = y + freearr_y[i];	2119	ny = y + freearr_y[i];
2111		2120
2112	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2121	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2122
2113	if (mflags & P_OUT_OF_MAP) {	2123	if (mflags & P_OUT_OF_MAP)
		2124	max = maxfree[i];
		2125	else
		2126	{
		2127	mapspace &ms = mp->at (nx, ny);
		2128
		2129	blocked = ms.move_block;
		2130
		2131	if ((move_type & blocked) == move_type)
2114	max = maxfree[i];	2132	max = maxfree[i];
2115	} else {
2116	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2117
2118	if ((move_type & blocked) == move_type) {
2119	max=maxfree[i];
2120	} else if (mflags & P_IS_ALIVE) {	2133	else if (mflags & P_IS_ALIVE)
2121	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2134	{
		2135	for (tmp = ms.bot; tmp; tmp = tmp->above)
2122	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2136	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2123	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2137	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2124	break;	2138	break;
2125	}	2139
2126	}
2127	if(tmp) {	2140	if (tmp)
2128	return freedir[i];	2141	return freedir[i];
2129	}
2130	}	2142	}
2131	}	2143	}
2132	}	2144	}
		2145
2133	return 0;	2146	return 0;
2134	}	2147	}
2135		2148
2136	/*	2149	/*
2137	* distance(object 1, object 2) will return the square of the	2150	* distance(object 1, object 2) will return the square of the
2138	* distance between the two given objects.	2151	* distance between the two given objects.
2139	*/	2152	*/
2140		2153	int
2141	int distance(const object *ob1, const object *ob2) {	2154	distance (const object *ob1, const object *ob2)
2142	int i;	2155	{
2143	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2156	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2144	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2145	return i;
2146	}	2157	}
2147		2158
2148	/*	2159	/*
2149	* find_dir_2(delta-x,delta-y) will return a direction in which	2160	* find_dir_2(delta-x,delta-y) will return a direction in which
2150	* an object which has subtracted the x and y coordinates of another	2161	* an object which has subtracted the x and y coordinates of another
2151	* object, needs to travel toward it.	2162	* object, needs to travel toward it.
2152	*/	2163	*/
2153		2164	int
2154	int find_dir_2(int x, int y) {	2165	find_dir_2 (int x, int y)
		2166	{
2155	int q;	2167	int q;
2156		2168
2157	if(y)	2169	if (y)
2158	q=x*100/y;	2170	q = x * 100 / y;
2159	else if (x)	2171	else if (x)
2160	q= -300*x;	2172	q = -300 * x;
2161	else	2173	else
2162	return 0;	2174	return 0;
2163		2175
2164	if(y>0) {	2176	if (y > 0)
		2177	{
2165	if(q < -242)	2178	if (q < -242)
2166	return 3 ;	2179	return 3;
2167	if (q < -41)	2180	if (q < -41)
2168	return 2 ;	2181	return 2;
2169	if (q < 41)	2182	if (q < 41)
2170	return 1 ;	2183	return 1;
2171	if (q < 242)	2184	if (q < 242)
2172	return 8 ;	2185	return 8;
2173	return 7 ;	2186	return 7;
2174	}	2187	}
2175		2188
2176	if (q < -242)	2189	if (q < -242)
2177	return 7 ;	2190	return 7;
2178	if (q < -41)	2191	if (q < -41)
2179	return 6 ;	2192	return 6;
2180	if (q < 41)	2193	if (q < 41)
2181	return 5 ;	2194	return 5;
2182	if (q < 242)	2195	if (q < 242)
2183	return 4 ;	2196	return 4;
2184		2197
2185	return 3 ;	2198	return 3;
2186	}	2199	}
2187		2200
2188	/*	2201	/*
2189	* absdir(int): Returns a number between 1 and 8, which represent	2202	* absdir(int): Returns a number between 1 and 8, which represent
2190	* the "absolute" direction of a number (it actually takes care of	2203	* the "absolute" direction of a number (it actually takes care of
2191	* "overflow" in previous calculations of a direction).	2204	* "overflow" in previous calculations of a direction).
2192	*/	2205	*/
2193		2206
		2207	int
2194	int absdir(int d) {	2208	absdir (int d)
2195	while(d<1) d+=8;	2209	{
2196	while(d>8) d-=8;	2210	while (d < 1)
		2211	d += 8;
		2212
		2213	while (d > 8)
		2214	d -= 8;
		2215
2197	return d;	2216	return d;
2198	}	2217	}
2199		2218
2200	/*	2219	/*
2201	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2220	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2202	* between two directions (which are expected to be absolute (see absdir())	2221	* between two directions (which are expected to be absolute (see absdir())
2203	*/	2222	*/
2204		2223
		2224	int
2205	int dirdiff(int dir1, int dir2) {	2225	dirdiff (int dir1, int dir2)
		2226	{
2206	int d;	2227	int d;
		2228
2207	d = abs(dir1 - dir2);	2229	d = abs (dir1 - dir2);
2208	if(d>4)	2230	if (d > 4)
2209	d = 8 - d;	2231	d = 8 - d;
		2232
2210	return d;	2233	return d;
2211	}	2234	}
2212		2235
2213	/* peterm:	2236	/* peterm:
2214	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2237	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2217	* This basically means that if direction is 15, then it could either go	2240	* This basically means that if direction is 15, then it could either go
2218	* direction 4, 14, or 16 to get back to where we are.	2241	* direction 4, 14, or 16 to get back to where we are.
2219	* Moved from spell_util.c to object.c with the other related direction	2242	* Moved from spell_util.c to object.c with the other related direction
2220	* functions.	2243	* functions.
2221	*/	2244	*/
2222
2223	int reduction_dir[SIZEOFFREE][3] = {	2245	int reduction_dir[SIZEOFFREE][3] = {
2224	{0,0,0}, /* 0 */	2246	{0, 0, 0}, /* 0 */
2225	{0,0,0}, /* 1 */	2247	{0, 0, 0}, /* 1 */
2226	{0,0,0}, /* 2 */	2248	{0, 0, 0}, /* 2 */
2227	{0,0,0}, /* 3 */	2249	{0, 0, 0}, /* 3 */
2228	{0,0,0}, /* 4 */	2250	{0, 0, 0}, /* 4 */
2229	{0,0,0}, /* 5 */	2251	{0, 0, 0}, /* 5 */
2230	{0,0,0}, /* 6 */	2252	{0, 0, 0}, /* 6 */
2231	{0,0,0}, /* 7 */	2253	{0, 0, 0}, /* 7 */
2232	{0,0,0}, /* 8 */	2254	{0, 0, 0}, /* 8 */
2233	{8,1,2}, /* 9 */	2255	{8, 1, 2}, /* 9 */
2234	{1,2,-1}, /* 10 */	2256	{1, 2, -1}, /* 10 */
2235	{2,10,12}, /* 11 */	2257	{2, 10, 12}, /* 11 */
2236	{2,3,-1}, /* 12 */	2258	{2, 3, -1}, /* 12 */
2237	{2,3,4}, /* 13 */	2259	{2, 3, 4}, /* 13 */
2238	{3,4,-1}, /* 14 */	2260	{3, 4, -1}, /* 14 */
2239	{4,14,16}, /* 15 */	2261	{4, 14, 16}, /* 15 */
2240	{5,4,-1}, /* 16 */	2262	{5, 4, -1}, /* 16 */
2241	{4,5,6}, /* 17 */	2263	{4, 5, 6}, /* 17 */
2242	{6,5,-1}, /* 18 */	2264	{6, 5, -1}, /* 18 */
2243	{6,20,18}, /* 19 */	2265	{6, 20, 18}, /* 19 */
2244	{7,6,-1}, /* 20 */	2266	{7, 6, -1}, /* 20 */
2245	{6,7,8}, /* 21 */	2267	{6, 7, 8}, /* 21 */
2246	{7,8,-1}, /* 22 */	2268	{7, 8, -1}, /* 22 */
2247	{8,22,24}, /* 23 */	2269	{8, 22, 24}, /* 23 */
2248	{8,1,-1}, /* 24 */	2270	{8, 1, -1}, /* 24 */
2249	{24,9,10}, /* 25 */	2271	{24, 9, 10}, /* 25 */
2250	{9,10,-1}, /* 26 */	2272	{9, 10, -1}, /* 26 */
2251	{10,11,-1}, /* 27 */	2273	{10, 11, -1}, /* 27 */
2252	{27,11,29}, /* 28 */	2274	{27, 11, 29}, /* 28 */
2253	{11,12,-1}, /* 29 */	2275	{11, 12, -1}, /* 29 */
2254	{12,13,-1}, /* 30 */	2276	{12, 13, -1}, /* 30 */
2255	{12,13,14}, /* 31 */	2277	{12, 13, 14}, /* 31 */
2256	{13,14,-1}, /* 32 */	2278	{13, 14, -1}, /* 32 */
2257	{14,15,-1}, /* 33 */	2279	{14, 15, -1}, /* 33 */
2258	{33,15,35}, /* 34 */	2280	{33, 15, 35}, /* 34 */
2259	{16,15,-1}, /* 35 */	2281	{16, 15, -1}, /* 35 */
2260	{17,16,-1}, /* 36 */	2282	{17, 16, -1}, /* 36 */
2261	{18,17,16}, /* 37 */	2283	{18, 17, 16}, /* 37 */
2262	{18,17,-1}, /* 38 */	2284	{18, 17, -1}, /* 38 */
2263	{18,19,-1}, /* 39 */	2285	{18, 19, -1}, /* 39 */
2264	{41,19,39}, /* 40 */	2286	{41, 19, 39}, /* 40 */
2265	{19,20,-1}, /* 41 */	2287	{19, 20, -1}, /* 41 */
2266	{20,21,-1}, /* 42 */	2288	{20, 21, -1}, /* 42 */
2267	{20,21,22}, /* 43 */	2289	{20, 21, 22}, /* 43 */
2268	{21,22,-1}, /* 44 */	2290	{21, 22, -1}, /* 44 */
2269	{23,22,-1}, /* 45 */	2291	{23, 22, -1}, /* 45 */
2270	{45,47,23}, /* 46 */	2292	{45, 47, 23}, /* 46 */
2271	{23,24,-1}, /* 47 */	2293	{23, 24, -1}, /* 47 */
2272	{24,9,-1}}; /* 48 */	2294	{24, 9, -1}
		2295	}; /* 48 */
2273		2296
2274	/* Recursive routine to step back and see if we can	2297	/* Recursive routine to step back and see if we can
2275	* find a path to that monster that we found. If not,	2298	* find a path to that monster that we found. If not,
2276	* we don't bother going toward it. Returns 1 if we	2299	* we don't bother going toward it. Returns 1 if we
2277	* can see a direct way to get it	2300	* can see a direct way to get it
2278	* Modified to be map tile aware -.MSW	2301	* Modified to be map tile aware -.MSW
2279	*/	2302	*/
2280		2303	int
2281
2282	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2304	can_see_monsterP (maptile *m, int x, int y, int dir)
		2305	{
2283	sint16 dx, dy;	2306	sint16 dx, dy;
2284	int mflags;	2307	int mflags;
2285		2308
		2309	if (dir < 0)
2286	if(dir<0) return 0; /* exit condition: invalid direction */	2310	return 0; /* exit condition: invalid direction */
2287		2311
2288	dx = x + freearr_x[dir];	2312	dx = x + freearr_x[dir];
2289	dy = y + freearr_y[dir];	2313	dy = y + freearr_y[dir];
2290		2314
2291	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2315	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2292		2316
2293	/* This functional arguably was incorrect before - it was	2317	/* This functional arguably was incorrect before - it was
2294	* checking for P_WALL - that was basically seeing if	2318	* checking for P_WALL - that was basically seeing if
2295	* we could move to the monster - this is being more	2319	* we could move to the monster - this is being more
2296	* literal on if we can see it. To know if we can actually	2320	* literal on if we can see it. To know if we can actually
2297	* move to the monster, we'd need the monster passed in or	2321	* move to the monster, we'd need the monster passed in or
2298	* at least its move type.	2322	* at least its move type.
2299	*/	2323	*/
2300	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2324	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2325	return 0;
2301		2326
2302	/* yes, can see. */	2327	/* yes, can see. */
2303	if(dir < 9) return 1;	2328	if (dir < 9)
		2329	return 1;
		2330
2304	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2331	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2305	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2332	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2306	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2333	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2307	}	2334	}
2308		2335
2309
2310
2311	/*	2336	/*
2312	* can_pick(picker, item): finds out if an object is possible to be	2337	* can_pick(picker, item): finds out if an object is possible to be
2313	* picked up by the picker. Returnes 1 if it can be	2338	* picked up by the picker. Returnes 1 if it can be
2314	* picked up, otherwise 0.	2339	* picked up, otherwise 0.
2315	*	2340	*
…		…
2317	* core dumps if they do.	2342	* core dumps if they do.
2318	*	2343	*
2319	* Add a check so we can't pick up invisible objects (0.93.8)	2344	* Add a check so we can't pick up invisible objects (0.93.8)
2320	*/	2345	*/
2321		2346
		2347	int
2322	int can_pick(const object *who, const object *item) {	2348	can_pick (const object *who, const object *item)
		2349	{
2323	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2350	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2324	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2351	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2325	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2352	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2326	(who->type==PLAYER||item->weight<who->weight/3));
2327	}	2353	}
2328
2329		2354
2330	/*	2355	/*
2331	* create clone from object to another	2356	* create clone from object to another
2332	*/	2357	*/
		2358	object *
2333	object *object_create_clone (object *asrc) {	2359	object_create_clone (object *asrc)
		2360	{
2334	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2361	object *dst = 0, *tmp, *src, *part, *prev, *item;
2335		2362
2336	if(!asrc) return NULL;	2363	if (!asrc)
		2364	return 0;
		2365
2337	src = asrc;	2366	src = asrc;
2338	if(src->head)	2367	if (src->head)
2339	src = src->head;	2368	src = src->head;
2340		2369
2341	prev = NULL;	2370	prev = 0;
2342	for(part = src; part; part = part->more) {	2371	for (part = src; part; part = part->more)
2343	tmp = get_object();	2372	{
2344	copy_object(part,tmp);	2373	tmp = part->clone ();
2345	tmp->x -= src->x;	2374	tmp->x -= src->x;
2346	tmp->y -= src->y;	2375	tmp->y -= src->y;
		2376
2347	if(!part->head) {	2377	if (!part->head)
		2378	{
2348	dst = tmp;	2379	dst = tmp;
2349	tmp->head = NULL;	2380	tmp->head = 0;
		2381	}
2350	} else {	2382	else
2351	tmp->head = dst;	2383	tmp->head = dst;
2352	}	2384
2353	tmp->more = NULL;	2385	tmp->more = 0;
		2386
2354	if(prev)	2387	if (prev)
2355	prev->more = tmp;	2388	prev->more = tmp;
		2389
2356	prev = tmp;	2390	prev = tmp;
2357	}	2391	}
2358	/*** copy inventory ***/	2392
2359	for(item = src->inv; item; item = item->below) {	2393	for (item = src->inv; item; item = item->below)
2360	(void) insert_ob_in_ob(object_create_clone(item),dst);	2394	insert_ob_in_ob (object_create_clone (item), dst);
2361	}
2362		2395
2363	return dst;	2396	return dst;
2364	}
2365
2366	/* return true if the object was destroyed, 0 otherwise */
2367	int was_destroyed (const object *op, tag_t old_tag)
2368	{
2369	/* checking for FLAG_FREED isn't necessary, but makes this function more
2370	* robust */
2371	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2372	}	2397	}
2373		2398
2374	/* GROS - Creates an object using a string representing its content. */	2399	/* GROS - Creates an object using a string representing its content. */
2375	/* Basically, we save the content of the string to a temp file, then call */	2400	/* Basically, we save the content of the string to a temp file, then call */
2376	/* load_object on it. I admit it is a highly inefficient way to make things, */	2401	/* load_object on it. I admit it is a highly inefficient way to make things, */
2377	/* but it was simple to make and allows reusing the load_object function. */	2402	/* but it was simple to make and allows reusing the load_object function. */
2378	/* Remember not to use load_object_str in a time-critical situation. */	2403	/* Remember not to use load_object_str in a time-critical situation. */
2379	/* Also remember that multiparts objects are not supported for now. */	2404	/* Also remember that multiparts objects are not supported for now. */
2380		2405	object *
2381	object* load_object_str(const char *obstr)	2406	load_object_str (const char *obstr)
2382	{	2407	{
2383	object *op;	2408	object *op;
2384	char filename[MAX_BUF];	2409	char filename[MAX_BUF];
		2410
2385	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2411	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2386		2412
2387	FILE *tempfile=fopen(filename,"w");	2413	FILE *tempfile = fopen (filename, "w");
		2414
2388	if (tempfile == NULL)	2415	if (tempfile == NULL)
2389	{	2416	{
2390	LOG(llevError,"Error - Unable to access load object temp file\n");	2417	LOG (llevError, "Error - Unable to access load object temp file\n");
2391	return NULL;	2418	return NULL;
2392	};	2419	}
		2420
2393	fprintf(tempfile,obstr);	2421	fprintf (tempfile, obstr);
2394	fclose(tempfile);	2422	fclose (tempfile);
2395		2423
2396	op=get_object();	2424	op = object::create ();
2397		2425
2398	object_thawer thawer (filename);	2426	object_thawer thawer (filename);
2399		2427
2400	if (thawer)	2428	if (thawer)
2401	load_object(thawer,op,0);	2429	load_object (thawer, op, 0);
2402		2430
2403	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2431	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2404	CLEAR_FLAG(op,FLAG_REMOVED);	2432	CLEAR_FLAG (op, FLAG_REMOVED);
2405		2433
2406	return op;	2434	return op;
2407	}	2435	}
2408		2436
2409	/* This returns the first object in who's inventory that	2437	/* This returns the first object in who's inventory that
2410	* has the same type and subtype match.	2438	* has the same type and subtype match.
2411	* returns NULL if no match.	2439	* returns NULL if no match.
2412	*/	2440	*/
		2441	object *
2413	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2442	find_obj_by_type_subtype (const object *who, int type, int subtype)
2414	{	2443	{
2415	object *tmp;
2416
2417	for (tmp=who->inv; tmp; tmp=tmp->below)	2444	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2418	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2445	if (tmp->type == type && tmp->subtype == subtype)
		2446	return tmp;
2419		2447
2420	return NULL;	2448	return 0;
2421	}	2449	}
2422		2450
2423	/* If ob has a field named key, return the link from the list,	2451	/* If ob has a field named key, return the link from the list,
2424	* otherwise return NULL.	2452	* otherwise return NULL.
2425	*	2453	*
2426	* key must be a passed in shared string - otherwise, this won't	2454	* key must be a passed in shared string - otherwise, this won't
2427	* do the desired thing.	2455	* do the desired thing.
2428	*/	2456	*/
		2457	key_value *
2429	key_value * get_ob_key_link(const object * ob, const char * key) {	2458	get_ob_key_link (const object *ob, const char *key)
2430	key_value * link;	2459	{
2431
2432	for (link = ob->key_values; link != NULL; link = link->next) {	2460	for (key_value *link = ob->key_values; link; link = link->next)
2433	if (link->key == key) {	2461	if (link->key == key)
2434	return link;	2462	return link;
2435	}	2463
2436	}	2464	return 0;
2437		2465	}
2438	return NULL;
2439	}
2440		2466
2441	/*	2467	/*
2442	* Returns the value of op has an extra_field for key, or NULL.	2468	* Returns the value of op has an extra_field for key, or NULL.
2443	*	2469	*
2444	* The argument doesn't need to be a shared string.	2470	* The argument doesn't need to be a shared string.
2445	*	2471	*
2446	* The returned string is shared.	2472	* The returned string is shared.
2447	*/	2473	*/
		2474	const char *
2448	const char * get_ob_key_value(const object * op, const char * const key) {	2475	get_ob_key_value (const object *op, const char *const key)
		2476	{
2449	key_value * link;	2477	key_value *link;
2450	const char * canonical_key;	2478	shstr_cmp canonical_key (key);
		2479
		2480	if (!canonical_key)
2451		2481	{
2452	canonical_key = shstr::find (key);
2453
2454	if (canonical_key == NULL) {
2455	/* 1. There being a field named key on any object	2482	/* 1. There being a field named key on any object
2456	* implies there'd be a shared string to find.	2483	* implies there'd be a shared string to find.
2457	* 2. Since there isn't, no object has this field.	2484	* 2. Since there isn't, no object has this field.
2458	* 3. Therefore, *this* object doesn't have this field.	2485	* 3. Therefore, *this* object doesn't have this field.
2459	*/	2486	*/
2460	return NULL;	2487	return 0;
2461	}	2488	}
2462		2489
2463	/* This is copied from get_ob_key_link() above -	2490	/* This is copied from get_ob_key_link() above -
2464	* only 4 lines, and saves the function call overhead.	2491	* only 4 lines, and saves the function call overhead.
2465	*/	2492	*/
2466	for (link = op->key_values; link != NULL; link = link->next) {	2493	for (link = op->key_values; link; link = link->next)
2467	if (link->key == canonical_key) {	2494	if (link->key == canonical_key)
2468	return link->value;	2495	return link->value;
2469	}	2496
2470	}	2497	return 0;
2471	return NULL;
2472	}	2498	}
2473		2499
2474		2500
2475	/*	2501	/*
2476	* Updates the canonical_key in op to value.	2502	* Updates the canonical_key in op to value.
…		…
2480	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2506	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2481	* keys.	2507	* keys.
2482	*	2508	*
2483	* Returns TRUE on success.	2509	* Returns TRUE on success.
2484	*/	2510	*/
		2511	int
2485	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2512	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2513	{
2486	key_value * field = NULL, *last=NULL;	2514	key_value *field = NULL, *last = NULL;
2487		2515
2488	for (field=op->key_values; field != NULL; field=field->next) {	2516	for (field = op->key_values; field != NULL; field = field->next)
		2517	{
2489	if (field->key != canonical_key) {	2518	if (field->key != canonical_key)
		2519	{
2490	last = field;	2520	last = field;
2491	continue;	2521	continue;
2492	}	2522	}
2493		2523
2494	if (value)	2524	if (value)
2495	field->value = value;	2525	field->value = value;
2496	else {	2526	else
		2527	{
2497	/* Basically, if the archetype has this key set,	2528	/* Basically, if the archetype has this key set,
2498	* we need to store the null value so when we save	2529	* we need to store the null value so when we save
2499	* it, we save the empty value so that when we load,	2530	* it, we save the empty value so that when we load,
2500	* we get this value back again.	2531	* we get this value back again.
2501	*/	2532	*/
2502	if (get_ob_key_link (&op->arch->clone, canonical_key))	2533	if (get_ob_key_link (&op->arch->clone, canonical_key))
2503	field->value = 0;	2534	field->value = 0;
		2535	else
		2536	{
		2537	if (last)
		2538	last->next = field->next;
2504	else	2539	else
2505	{
2506	if (last) last->next = field->next;
2507	else op->key_values = field->next;	2540	op->key_values = field->next;
2508		2541
2509	delete field;	2542	delete field;
2510	}	2543	}
2511	}	2544	}
2512	return TRUE;	2545	return TRUE;
2513	}	2546	}
2514	/* IF we get here, key doesn't exist */	2547	/* IF we get here, key doesn't exist */
2515		2548
2516	/* No field, we'll have to add it. */	2549	/* No field, we'll have to add it. */
2517		2550
2518	if (!add_key) {	2551	if (!add_key)
2519	return FALSE;	2552	return FALSE;
2520	}	2553
2521	/* There isn't any good reason to store a null	2554	/* There isn't any good reason to store a null
2522	* value in the key/value list. If the archetype has	2555	* value in the key/value list. If the archetype has
2523	* this key, then we should also have it, so shouldn't	2556	* this key, then we should also have it, so shouldn't
2524	* be here. If user wants to store empty strings,	2557	* be here. If user wants to store empty strings,
2525	* should pass in ""	2558	* should pass in ""
2526	*/	2559	*/
2527	if (value == NULL) return TRUE;	2560	if (value == NULL)
2528
2529	field = new key_value;
2530
2531	field->key = canonical_key;
2532	field->value = value;
2533	/* Usual prepend-addition. */
2534	field->next = op->key_values;
2535	op->key_values = field;
2536
2537	return TRUE;	2561	return TRUE;
		2562
		2563	field = new key_value;
		2564
		2565	field->key = canonical_key;
		2566	field->value = value;
		2567	/* Usual prepend-addition. */
		2568	field->next = op->key_values;
		2569	op->key_values = field;
		2570
		2571	return TRUE;
2538	}	2572	}
2539		2573
2540	/*	2574	/*
2541	* Updates the key in op to value.	2575	* Updates the key in op to value.
2542	*	2576	*
…		…
2544	* and not add new ones.	2578	* and not add new ones.
2545	* In general, should be little reason FALSE is ever passed in for add_key	2579	* In general, should be little reason FALSE is ever passed in for add_key
2546	*	2580	*
2547	* Returns TRUE on success.	2581	* Returns TRUE on success.
2548	*/	2582	*/
		2583	int
2549	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2584	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2550	{	2585	{
2551	shstr key_ (key);	2586	shstr key_ (key);
		2587
2552	return set_ob_key_value_s (op, key_, value, add_key);	2588	return set_ob_key_value_s (op, key_, value, add_key);
2553	}	2589	}
		2590
		2591	object::depth_iterator::depth_iterator (object *container)
		2592	: iterator_base (container)
		2593	{
		2594	while (item->inv)
		2595	item = item->inv;
		2596	}
		2597
		2598	void
		2599	object::depth_iterator::next ()
		2600	{
		2601	if (item->below)
		2602	{
		2603	item = item->below;
		2604
		2605	while (item->inv)
		2606	item = item->inv;
		2607	}
		2608	else
		2609	item = item->env;
		2610	}
		2611
		2612
		2613	const char *
		2614	object::flag_desc (char *desc, int len) const
		2615	{
		2616	char *p = desc;
		2617	bool first = true;
		2618
		2619	*p = 0;
		2620
		2621	for (int i = 0; i < NUM_FLAGS; i++)
		2622	{
		2623	if (len <= 10) // magic constant!
		2624	{
		2625	snprintf (p, len, ",...");
		2626	break;
		2627	}
		2628
		2629	if (flag [i])
		2630	{
		2631	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2632	len -= cnt;
		2633	p += cnt;
		2634	first = false;
		2635	}
		2636	}
		2637
		2638	return desc;
		2639	}
		2640
		2641	// return a suitable string describing an object in enough detail to find it
		2642	const char *
		2643	object::debug_desc (char *info) const
		2644	{
		2645	char flagdesc[512];
		2646	char info2[256 * 4];
		2647	char *p = info;
		2648
		2649	p += snprintf (p, 512, "{cnt:%d,uuid:<1,%" PRIx64 ">,name:\"%s%s%s\",flags:[%s],type:%d}",
		2650	count, uuid.seq,
		2651	&name,
		2652	title ? "\",title:" : "",
		2653	title ? (const char *)title : "",
		2654	flag_desc (flagdesc, 512), type);
		2655
		2656	if (env)
		2657	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2658
		2659	if (map)
		2660	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2661
		2662	return info;
		2663	}
		2664
		2665	const char *
		2666	object::debug_desc () const
		2667	{
		2668	static char info[256 * 4];
		2669	return debug_desc (info);
		2670	}
		2671

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