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Comparing deliantra/server/common/object.C (file contents):
Revision 1.21 by root, Sat Sep 9 21:48:28 2006 UTC vs.
Revision 1.114 by root, Sun Jan 14 22:06:05 2007 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.21 2006/09/09 21:48:28 root Exp $";
4	*/
5
6	/*	1	/*
7	CrossFire, A Multiplayer game for X-windows	2	CrossFire, A Multiplayer game for X-windows
8		3
		4	Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	Copyright (C) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	Copyright (C) 1992 Frank Tore Johansen
11		7
12	This program is free software; you can redistribute it and/or modify	8	This program is free software; you can redistribute it and/or modify
13	it under the terms of the GNU General Public License as published by	9	it under the terms of the GNU General Public License as published by
…		…
21		17
22	You should have received a copy of the GNU General Public License	18	You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	19	along with this program; if not, write to the Free Software
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25		21
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	The authors can be reached via e-mail at <crossfire@schmorp.de>
27	*/	23	*/
28		24
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.	25	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying	26	sub/add_weight will transcend the environment updating the carrying
31	variable. */	27	variable. */
32	#include <global.h>	28	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	29	#include <stdio.h>
35	#include <sys/types.h>	30	#include <sys/types.h>
36	#include <sys/uio.h>	31	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	32	#include <object.h>
39	#include <funcpoint.h>	33	#include <funcpoint.h>
40	#include <skills.h>
41	#include <loader.h>	34	#include <loader.h>
		35
		36	#include <bitset>
		37
42	int nrofallocobjects = 0;	38	int nrofallocobjects = 0;
		39	static UUID uuid;
		40	const uint64 UUID_SKIP = 1<<19;
43		41
44	object *objects; /* Pointer to the list of used objects */	42	objectvec objects;
45	object *active_objects; /* List of active objects that need to be processed */	43	activevec actives;
46		44
47	short freearr_x[SIZEOFFREE]=	45	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};	46	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]=	47	};
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,	48	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};	49	-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]=	50	};
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,	51	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};	52	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
		53	};
56	int freedir[SIZEOFFREE]= {	54	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,	55	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};	56	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		57	};
		58
		59	static void
		60	write_uuid (void)
		61	{
		62	char filename1[MAX_BUF], filename2[MAX_BUF];
		63
		64	sprintf (filename1, "%s/uuid", settings.localdir);
		65	sprintf (filename2, "%s/uuid~", settings.localdir);
		66
		67	FILE *fp;
		68
		69	if (!(fp = fopen (filename2, "w")))
		70	{
		71	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
		72	return;
		73	}
		74
		75	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
		76	fclose (fp);
		77	rename (filename2, filename1);
		78	}
		79
		80	static void
		81	read_uuid (void)
		82	{
		83	char filename[MAX_BUF];
		84
		85	sprintf (filename, "%s/uuid", settings.localdir);
		86
		87	FILE *fp;
		88
		89	if (!(fp = fopen (filename, "r")))
		90	{
		91	if (errno == ENOENT)
		92	{
		93	LOG (llevInfo, "RESET uid to 1\n");
		94	uuid.seq = 0;
		95	write_uuid ();
		96	return;
		97	}
		98
		99	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		100	_exit (1);
		101	}
		102
		103	int version;
		104	unsigned long long uid;
		105	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)
		106	{
		107	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);
		108	_exit (1);
		109	}
		110
		111	uuid.seq = uid;
		112	write_uuid ();
		113	LOG (llevDebug, "read UID: %" PRId64 "\n", uid);
		114	fclose (fp);
		115	}
		116
		117	UUID
		118	gen_uuid ()
		119	{
		120	UUID uid;
		121
		122	uid.seq = ++uuid.seq;
		123
		124	if (!(uuid.seq & (UUID_SKIP - 1)))
		125	write_uuid ();
		126
		127	return uid;
		128	}
		129
		130	void
		131	init_uuid ()
		132	{
		133	read_uuid ();
		134	}
59		135
60	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	136	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		137	static int
61	static int compare_ob_value_lists_one(const object * wants, const object * has) {	138	compare_ob_value_lists_one (const object *wants, const object *has)
		139	{
62	key_value * wants_field;	140	key_value *wants_field;
63		141
64	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	142	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
65	* objects with lists are rare, and lists stay short. If not, use a	143	* objects with lists are rare, and lists stay short. If not, use a
66	* different structure or at least keep the lists sorted...	144	* different structure or at least keep the lists sorted...
67	*/	145	*/
68		146
69	/* For each field in wants, */	147	/* For each field in wants, */
70	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	148	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		149	{
71	key_value * has_field;	150	key_value *has_field;
72		151
73	/* Look for a field in has with the same key. */	152	/* Look for a field in has with the same key. */
74	has_field = get_ob_key_link(has, wants_field->key);	153	has_field = get_ob_key_link (has, wants_field->key);
		154
		155	if (has_field == NULL)
75		156	{
76	if (has_field == NULL) {
77	/* No field with that name. */	157	/* No field with that name. */
78	return FALSE;	158	return FALSE;
79	}
80		159	}
		160
81	/* Found the matching field. */	161	/* Found the matching field. */
82	if (has_field->value != wants_field->value) {	162	if (has_field->value != wants_field->value)
		163	{
83	/* Values don't match, so this half of the comparison is false. */	164	/* Values don't match, so this half of the comparison is false. */
84	return FALSE;	165	return FALSE;
85	}	166	}
86		167
87	/* If we get here, we found a match. Now for the next field in wants. */	168	/* If we get here, we found a match. Now for the next field in wants. */
88	}
89		169	}
		170
90	/* If we get here, every field in wants has a matching field in has. */	171	/* If we get here, every field in wants has a matching field in has. */
91	return TRUE;	172	return TRUE;
92	}	173	}
93		174
94	/* Returns TRUE if ob1 has the same key_values as ob2. */	175	/* Returns TRUE if ob1 has the same key_values as ob2. */
		176	static int
95	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	177	compare_ob_value_lists (const object *ob1, const object *ob2)
		178	{
96	/* However, there may be fields in has which aren't partnered in wants,	179	/* However, there may be fields in has which aren't partnered in wants,
97	* so we need to run the comparison *twice*. :(	180	* so we need to run the comparison *twice*. :(
98	*/	181	*/
99	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	182	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
100	}	183	}
101		184
102	/* Function examines the 2 objects given to it, and returns true if	185	/* Function examines the 2 objects given to it, and returns true if
103	* they can be merged together.	186	* they can be merged together.
104	*	187	*
105	* Note that this function appears a lot longer than the macro it	188	* Note that this function appears a lot longer than the macro it
106	* replaces - this is mostly for clarity - a decent compiler should hopefully	189	* replaces - this is mostly for clarity - a decent compiler should hopefully
107	* reduce this to the same efficiency.	190	* reduce this to the same efficiency.
108	*	191	*
109	* Check nrof variable *before* calling CAN_MERGE()	192	* Check nrof variable *before* calling can_merge()
110	*	193	*
111	* Improvements made with merge: Better checking on potion, and also	194	* Improvements made with merge: Better checking on potion, and also
112	* check weight	195	* check weight
113	*/	196	*/
114
115	bool
116	object::can_merge (object *ob1, object *ob2)	197	bool object::can_merge_slow (object *ob1, object *ob2)
117	{	198	{
118	/* A couple quicksanity checks */	199	/* A couple quicksanity checks */
119	if ((ob1 == ob2) || (ob1->type != ob2->type))	200	if (ob1 == ob2
		201	|| ob1->type != ob2->type
		202	|| ob1->speed != ob2->speed
		203	|| ob1->value != ob2->value
		204	|| ob1->name != ob2->name)
120	return 0;	205	return 0;
121		206
122	if (ob1->speed != ob2->speed)	207	//TODO: this ain't working well, use nicer and correct overflow check
123	return 0;
124
125	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	208	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
126	* value could not be stored in a sint32 (which unfortunately sometimes is	209	* value could not be stored in a sint32 (which unfortunately sometimes is
127	* used to store nrof).	210	* used to store nrof).
128	*/	211	*/
129	if (ob1->nrof + ob2->nrof >= 1UL << 31)	212	if (ob1->nrof + ob2->nrof >= 1UL << 31)
…		…
139	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	222	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
140		223
141	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	224	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
142	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	225	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
143		226
144		227	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
145	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something	228	|| ob1->arch != ob2->arch
146	* being locked in inventory should prevent merging.
147	* 0x4 in flags3 is CLIENT_SENT
148	*/
149	if ((ob1->arch != ob2->arch) ||
150	(ob1->flags[0] != ob2->flags[0]) ||
151	(ob1->flags[1] != ob2->flags[1]) ||
152	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
153	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
154	(ob1->name != ob2->name) ||	229	|| ob1->name != ob2->name
155	(ob1->title != ob2->title) ||	230	|| ob1->title != ob2->title
156	(ob1->msg != ob2->msg) ||	231	|| ob1->msg != ob2->msg
157	(ob1->weight != ob2->weight) ||	232	|| ob1->weight != ob2->weight
158	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||	233	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
159	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||	234	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
160	(ob1->attacktype != ob2->attacktype) ||	235	|| ob1->attacktype != ob2->attacktype
161	(ob1->magic != ob2->magic) ||	236	|| ob1->magic != ob2->magic
162	(ob1->slaying != ob2->slaying) ||	237	|| ob1->slaying != ob2->slaying
163	(ob1->skill != ob2->skill) ||	238	|| ob1->skill != ob2->skill
164	(ob1->value != ob2->value) ||	239	|| ob1->value != ob2->value
165	(ob1->animation_id != ob2->animation_id) ||	240	|| ob1->animation_id != ob2->animation_id
166	(ob1->client_type != ob2->client_type) ||	241	|| ob1->client_type != ob2->client_type
167	(ob1->materialname != ob2->materialname) ||	242	|| ob1->materialname != ob2->materialname
168	(ob1->lore != ob2->lore) ||	243	|| ob1->lore != ob2->lore
169	(ob1->subtype != ob2->subtype) ||	244	|| ob1->subtype != ob2->subtype
170	(ob1->move_type != ob2->move_type) ||	245	|| ob1->move_type != ob2->move_type
171	(ob1->move_block != ob2->move_block) ||	246	|| ob1->move_block != ob2->move_block
172	(ob1->move_allow != ob2->move_allow) ||	247	|| ob1->move_allow != ob2->move_allow
173	(ob1->move_on != ob2->move_on) ||	248	|| ob1->move_on != ob2->move_on
174	(ob1->move_off != ob2->move_off) ||	249	|| ob1->move_off != ob2->move_off
175	(ob1->move_slow != ob2->move_slow) ||	250	|| ob1->move_slow != ob2->move_slow
176	(ob1->move_slow_penalty != ob2->move_slow_penalty))	251	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
177	return 0;	252	return 0;
178		253
179	/* This is really a spellbook check - really, we should	254	/* This is really a spellbook check - really, we should
180	* check all objects in the inventory.	255	* check all objects in the inventory.
181	*/	256	*/
182	if (ob1->inv || ob2->inv)	257	if (ob1->inv || ob2->inv)
183	{	258	{
184	/* if one object has inventory but the other doesn't, not equiv */	259	/* if one object has inventory but the other doesn't, not equiv */
185	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))	260	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
186	return 0;	261	return 0;
187		262
188	/* Now check to see if the two inventory objects could merge */	263	/* Now check to see if the two inventory objects could merge */
189	if (!CAN_MERGE (ob1->inv, ob2->inv))	264	if (!object::can_merge (ob1->inv, ob2->inv))
190	return 0;	265	return 0;
191		266
192	/* inventory ok - still need to check rest of this object to see	267	/* inventory ok - still need to check rest of this object to see
193	* if it is valid.	268	* if it is valid.
194	*/	269	*/
195	}	270	}
…		…
203		278
204	/* Note sure why the following is the case - either the object has to	279	/* Note sure why the following is the case - either the object has to
205	* be animated or have a very low speed. Is this an attempted monster	280	* be animated or have a very low speed. Is this an attempted monster
206	* check?	281	* check?
207	*/	282	*/
208	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	283	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
209	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
210	return 0;	284	return 0;
211		285
212	switch (ob1->type)	286	switch (ob1->type)
213	{	287	{
214	case SCROLL:	288	case SCROLL:
215	if (ob1->level != ob2->level)	289	if (ob1->level != ob2->level)
216	return 0;	290	return 0;
217	break;	291	break;
218	}	292	}
219		293
220	if (ob1->key_values != NULL || ob2->key_values != NULL)	294	if (ob1->key_values != NULL || ob2->key_values != NULL)
221	{	295	{
222	/* At least one of these has key_values. */	296	/* At least one of these has key_values. */
223	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	297	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
224	/* One has fields, but the other one doesn't. */	298	/* One has fields, but the other one doesn't. */
225	return 0;	299	return 0;
226	else if (!compare_ob_value_lists (ob1, ob2))	300	else if (!compare_ob_value_lists (ob1, ob2))
227	return 0;	301	return 0;
228	}	302	}
229		303
230	//TODO: generate an event or call into perl for additional checks	304	//TODO: generate an event or call into perl for additional checks
231	if (ob1->self || ob2->self)	305	if (ob1->self || ob2->self)
232	{	306	{
233	ob1->optimise ();	307	ob1->optimise ();
234	ob2->optimise ();	308	ob2->optimise ();
235		309
236	if (ob1->self || ob2->self)	310	if (ob1->self || ob2->self)
237	return 0;	311	return 0;
238	}	312	}
239		313
240	/* Everything passes, must be OK. */	314	/* Everything passes, must be OK. */
241	return 1;	315	return 1;
242	}	316	}
		317
243	/*	318	/*
244	* sum_weight() is a recursive function which calculates the weight	319	* sum_weight() is a recursive function which calculates the weight
245	* an object is carrying. It goes through in figures out how much	320	* an object is carrying. It goes through in figures out how much
246	* containers are carrying, and sums it up.	321	* containers are carrying, and sums it up.
247	*/	322	*/
248	signed long sum_weight(object *op) {	323	long
		324	sum_weight (object *op)
		325	{
249	signed long sum;	326	long sum;
250	object *inv;	327	object *inv;
		328
251	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	329	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		330	{
252	if (inv->inv)	331	if (inv->inv)
253	sum_weight(inv);	332	sum_weight (inv);
254	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	333	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
255	}	334	}
		335
256	if (op->type == CONTAINER && op->stats.Str)	336	if (op->type == CONTAINER && op->stats.Str)
257	sum = (sum * (100 - op->stats.Str))/100;	337	sum = (sum * (100 - op->stats.Str)) / 100;
		338
258	if(op->carrying != sum)	339	if (op->carrying != sum)
259	op->carrying = sum;	340	op->carrying = sum;
		341
260	return sum;	342	return sum;
261	}	343	}
262		344
263	/**	345	/**
264	* Return the outermost environment object for a given object.	346	* Return the outermost environment object for a given object.
265	*/	347	*/
266		348
		349	object *
267	object *object_get_env_recursive (object *op) {	350	object_get_env_recursive (object *op)
		351	{
268	while (op->env != NULL)	352	while (op->env != NULL)
269	op = op->env;	353	op = op->env;
270	return op;	354	return op;
271	}
272
273	/*
274	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
275	* a better check. We basically keeping traversing up until we can't
276	* or find a player.
277	*/
278
279	object *is_player_inv (object *op) {
280	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
281	if (op->env==op)
282	op->env = NULL;
283	return op;
284	}	355	}
285		356
286	/*	357	/*
287	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	358	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
288	* Some error messages.	359	* Some error messages.
289	* The result of the dump is stored in the static global errmsg array.	360	* The result of the dump is stored in the static global errmsg array.
290	*/	361	*/
291		362
292	void dump_object2(object *op) {	363	char *
293	errmsg[0] = 0;
294	return;
295	//TODO//D#d#
296	#if 0
297	char *cp;
298	/* object *tmp;*/
299
300	if(op->arch!=NULL) {
301	strcat(errmsg,"arch ");
302	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
303	strcat(errmsg,"\n");
304	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
305	strcat(errmsg,cp);
306	#if 0
307	/* Don't dump player diffs - they are too long, mostly meaningless, and
308	* will overflow the buffer.
309	* Changed so that we don't dump inventory either. This may
310	* also overflow the buffer.
311	*/
312	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
313	strcat(errmsg,cp);
314	for (tmp=op->inv; tmp; tmp=tmp->below)
315	dump_object2(tmp);
316	#endif
317	strcat(errmsg,"end\n");
318	} else {
319	strcat(errmsg,"Object ");
320	if (op->name==NULL) strcat(errmsg, "(null)");
321	else strcat(errmsg,op->name);
322	strcat(errmsg,"\n");
323	#if 0
324	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
325	strcat(errmsg,cp);
326	for (tmp=op->inv; tmp; tmp=tmp->below)
327	dump_object2(tmp);
328	#endif
329	strcat(errmsg,"end\n");
330	}
331	#endif
332	}
333
334	/*
335	* Dumps an object. Returns output in the static global errmsg array.
336	*/
337
338	void dump_object(object *op) {	364	dump_object (object *op)
339	if(op==NULL) {	365	{
340	strcpy(errmsg,"[NULL pointer]");	366	if (!op)
341	return;	367	return strdup ("[NULLOBJ]");
342	}
343	errmsg[0]='\0';
344	dump_object2(op);
345	}
346		368
347	void dump_all_objects(void) {	369	object_freezer freezer;
348	object *op;	370	save_object (freezer, op, 1);
349	for(op=objects;op!=NULL;op=op->next) {	371	return freezer.as_string ();
350	dump_object(op);
351	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
352	}
353	}	372	}
354		373
355	/*	374	/*
356	* get_nearest_part(multi-object, object 2) returns the part of the	375	* get_nearest_part(multi-object, object 2) returns the part of the
357	* multi-object 1 which is closest to the second object.	376	* multi-object 1 which is closest to the second object.
358	* If it's not a multi-object, it is returned.	377	* If it's not a multi-object, it is returned.
359	*/	378	*/
360		379
		380	object *
361	object *get_nearest_part(object *op, const object *pl) {	381	get_nearest_part (object *op, const object *pl)
		382	{
362	object *tmp,*closest;	383	object *tmp, *closest;
363	int last_dist,i;	384	int last_dist, i;
		385
364	if(op->more==NULL)	386	if (op->more == NULL)
365	return op;	387	return op;
366	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	388	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
367	if((i=distance(tmp,pl))<last_dist)	389	if ((i = distance (tmp, pl)) < last_dist)
368	closest=tmp,last_dist=i;	390	closest = tmp, last_dist = i;
369	return closest;	391	return closest;
370	}	392	}
371		393
372	/*	394	/*
373	* Returns the object which has the count-variable equal to the argument.	395	* Returns the object which has the count-variable equal to the argument.
374	*/	396	*/
375		397	object *
376	object *find_object(tag_t i) {	398	find_object (tag_t i)
377	object *op;	399	{
378	for(op=objects;op!=NULL;op=op->next)	400	for_all_objects (op)
379	if(op->count==i)	401	if (op->count == i)
380	break;
381	return op;	402	return op;
		403
		404	return 0;
382	}	405	}
383		406
384	/*	407	/*
385	* Returns the first object which has a name equal to the argument.	408	* Returns the first object which has a name equal to the argument.
386	* Used only by the patch command, but not all that useful.	409	* Used only by the patch command, but not all that useful.
387	* Enables features like "patch <name-of-other-player> food 999"	410	* Enables features like "patch <name-of-other-player> food 999"
388	*/	411	*/
389		412	object *
390	object *find_object_name(const char *str) {	413	find_object_name (const char *str)
391	const char *name = shstr::find (str);	414	{
		415	shstr_cmp str_ (str);
392	object *op;	416	object *op;
393	for(op=objects;op!=NULL;op=op->next)	417
		418	for_all_objects (op)
394	if(&op->name == name)	419	if (op->name == str_)
395	break;	420	break;
396		421
397	return op;	422	return op;
398	}	423	}
399		424
		425	void
400	void free_all_object_data ()	426	free_all_object_data ()
401	{	427	{
402	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	428	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
403	}
404
405	/*
406	* Returns the object which this object marks as being the owner.
407	* A id-scheme is used to avoid pointing to objects which have been
408	* freed and are now reused. If this is detected, the owner is
409	* set to NULL, and NULL is returned.
410	* Changed 2004-02-12 - if the player is setting at the play again
411	* prompt, he is removed, and we don't want to treat him as an owner of
412	* anything, so check removed flag. I don't expect that this should break
413	* anything - once an object is removed, it is basically dead anyways.
414	*/
415
416	object *get_owner(object *op) {
417	if(op->owner==NULL)
418	return NULL;
419
420	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
421	op->owner->count==op->ownercount)
422	return op->owner;
423
424	op->owner=NULL;
425	op->ownercount=0;
426	return NULL;
427	}
428
429	void clear_owner(object *op)
430	{
431	if (!op) return;
432
433	if (op->owner && op->ownercount == op->owner->count)
434	op->owner->refcount--;
435
436	op->owner = NULL;
437	op->ownercount = 0;
438	}	429	}
439		430
440	/*	431	/*
441	* Sets the owner and sets the skill and exp pointers to owner's current	432	* Sets the owner and sets the skill and exp pointers to owner's current
442	* skill and experience objects.	433	* skill and experience objects.
443	*/	434	*/
444	void set_owner (object *op, object *owner)	435	void
		436	object::set_owner (object *owner)
445	{	437	{
446	if(owner==NULL||op==NULL)	438	if (!owner)
447	return;	439	return;
448		440
449	/* next line added to allow objects which own objects */	441	/* next line added to allow objects which own objects */
450	/* Add a check for ownercounts in here, as I got into an endless loop	442	/* Add a check for ownercounts in here, as I got into an endless loop
451	* with the fireball owning a poison cloud which then owned the	443	* with the fireball owning a poison cloud which then owned the
452	* fireball. I believe that was caused by one of the objects getting	444	* fireball. I believe that was caused by one of the objects getting
453	* freed and then another object replacing it. Since the ownercounts	445	* freed and then another object replacing it. Since the ownercounts
454	* didn't match, this check is valid and I believe that cause is valid.	446	* didn't match, this check is valid and I believe that cause is valid.
455	*/	447	*/
456	while (owner->owner && owner!=owner->owner &&	448	while (owner->owner)
457	owner->ownercount==owner->owner->count) owner=owner->owner;	449	owner = owner->owner;
458		450
459	/* IF the owner still has an owner, we did not resolve to a final owner.
460	* so lets not add to that.
461	*/
462	if (owner->owner) return;
463
464	op->owner=owner;	451	this->owner = owner;
465
466	op->ownercount=owner->count;
467	owner->refcount++;
468
469	}
470
471	/* Set the owner to clone's current owner and set the skill and experience
472	* objects to clone's objects (typically those objects that where the owner's
473	* current skill and experience objects at the time when clone's owner was
474	* set - not the owner's current skill and experience objects).
475	*
476	* Use this function if player created an object (e.g. fire bullet, swarm
477	* spell), and this object creates further objects whose kills should be
478	* accounted for the player's original skill, even if player has changed
479	* skills meanwhile.
480	*/
481	void copy_owner (object *op, object *clone)
482	{
483	object *owner = get_owner (clone);
484	if (owner == NULL) {
485	/* players don't have owners - they own themselves. Update
486	* as appropriate.
487	*/
488	if (clone->type == PLAYER) owner=clone;
489	else return;
490	}
491	set_owner(op, owner);
492
493	}	452	}
494		453
495	/* Zero the key_values on op, decrementing the shared-string	454	/* Zero the key_values on op, decrementing the shared-string
496	* refcounts and freeing the links.	455	* refcounts and freeing the links.
497	*/	456	*/
		457	static void
498	static void free_key_values(object * op)	458	free_key_values (object *op)
499	{	459	{
500	for (key_value *i = op->key_values; i != 0; )	460	for (key_value *i = op->key_values; i != 0;)
501	{	461	{
502	key_value *next = i->next;	462	key_value *next = i->next;
503	delete i;	463	delete i;
		464
504	i = next;	465	i = next;
505	}	466	}
506		467
507	op->key_values = 0;	468	op->key_values = 0;
508	}	469	}
509		470
510	void object::clear ()
511	{
512	attachable_base::clear ();
513
514	free_key_values (this);
515
516	name = 0;
517	name_pl = 0;
518	title = 0;
519	race = 0;
520	slaying = 0;
521	skill = 0;
522	msg = 0;
523	lore = 0;
524	custom_name = 0;
525	materialname = 0;
526
527	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
528
529	SET_FLAG (this, FLAG_REMOVED);
530	}
531
532	void object::clone (object *destination)
533	{
534	*(object_copy *)destination = *(object_copy *)this;
535	*(object_pod *)destination = *(object_pod *)this;
536
537	if (self || cb)
538	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
539	}
540
541	/*	471	/*
542	* clear_object() frees everything allocated by an object, and also
543	* clears all variables and flags to default settings.
544	*/
545
546	void clear_object (object *op)
547	{
548	op->clear ();
549
550	op->contr = NULL;
551	op->below = NULL;
552	op->above = NULL;
553	op->inv = NULL;
554	op->container=NULL;
555	op->env=NULL;
556	op->more=NULL;
557	op->head=NULL;
558	op->map=NULL;
559	op->refcount=0;
560	op->active_next = NULL;
561	op->active_prev = NULL;
562	/* What is not cleared is next, prev, and count */
563
564	op->expmul = 1.0;
565	op->face = blank_face;
566	op->attacked_by_count = -1;
567
568	if (settings.casting_time)
569	op->casting_time = -1;
570	}
571
572	/*
573	* copy object first frees everything allocated by the second object,	472	* copy_to first frees everything allocated by the dst object,
574	* and then copies the contends of the first object into the second	473	* and then copies the contents of itself into the second
575	* object, allocating what needs to be allocated. Basically, any	474	* object, allocating what needs to be allocated. Basically, any
576	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	475	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
577	* if the first object is freed, the pointers in the new object	476	* if the first object is freed, the pointers in the new object
578	* will point at garbage.	477	* will point at garbage.
579	*/	478	*/
580		479	void
581	void copy_object (object *op2, object *op)	480	object::copy_to (object *dst)
582	{	481	{
583	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	482	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
584	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	483	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
585		484
586	op2->clone (op);	485	*(object_copy *)dst = *this;
587		486
588	if (is_freed) SET_FLAG (op, FLAG_FREED);	487	if (is_freed)
589	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	488	SET_FLAG (dst, FLAG_FREED);
590		489
		490	if (is_removed)
		491	SET_FLAG (dst, FLAG_REMOVED);
		492
591	if (op2->speed < 0)	493	if (speed < 0)
592	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	494	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
593		495
594	/* Copy over key_values, if any. */	496	/* Copy over key_values, if any. */
595	if (op2->key_values != NULL)	497	if (key_values)
596	{	498	{
597	key_value *tail = NULL;	499	key_value *tail = 0;
598	key_value *i;	500	key_value *i;
599		501
600	op->key_values = NULL;	502	dst->key_values = 0;
601		503
602	for (i = op2->key_values; i != NULL; i = i->next)	504	for (i = key_values; i; i = i->next)
603	{	505	{
604	key_value *new_link = new key_value;	506	key_value *new_link = new key_value;
605		507
606	new_link->next = NULL;	508	new_link->next = 0;
607	new_link->key = i->key;	509	new_link->key = i->key;
608	new_link->value = i->value;	510	new_link->value = i->value;
609		511
610	/* Try and be clever here, too. */	512	/* Try and be clever here, too. */
611	if (op->key_values == NULL)	513	if (!dst->key_values)
612	{	514	{
613	op->key_values = new_link;	515	dst->key_values = new_link;
614	tail = new_link;	516	tail = new_link;
615	}	517	}
616	else	518	else
617	{	519	{
618	tail->next = new_link;	520	tail->next = new_link;
619	tail = new_link;	521	tail = new_link;
620	}	522	}
621	}	523	}
622	}	524	}
623		525
624	update_ob_speed (op);	526	dst->set_speed (dst->speed);
		527	}
		528
		529	object *
		530	object::clone ()
		531	{
		532	object *neu = create ();
		533	copy_to (neu);
		534	return neu;
625	}	535	}
626		536
627	/*	537	/*
628	* If an object with the IS_TURNABLE() flag needs to be turned due	538	* If an object with the IS_TURNABLE() flag needs to be turned due
629	* to the closest player being on the other side, this function can	539	* to the closest player being on the other side, this function can
630	* be called to update the face variable, _and_ how it looks on the map.	540	* be called to update the face variable, _and_ how it looks on the map.
631	*/	541	*/
632		542	void
633	void update_turn_face(object *op) {	543	update_turn_face (object *op)
		544	{
634	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	545	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
635	return;	546	return;
		547
636	SET_ANIMATION(op, op->direction);	548	SET_ANIMATION (op, op->direction);
637	update_object(op,UP_OBJ_FACE);	549	update_object (op, UP_OBJ_FACE);
638	}	550	}
639		551
640	/*	552	/*
641	* Updates the speed of an object. If the speed changes from 0 to another	553	* Updates the speed of an object. If the speed changes from 0 to another
642	* value, or vice versa, then add/remove the object from the active list.	554	* value, or vice versa, then add/remove the object from the active list.
643	* This function needs to be called whenever the speed of an object changes.	555	* This function needs to be called whenever the speed of an object changes.
644	*/	556	*/
645		557	void
646	void update_ob_speed(object *op) {	558	object::set_speed (float speed)
647	extern int arch_init;	559	{
648		560	if (flag [FLAG_FREED] && speed)
649	/* No reason putting the archetypes objects on the speed list,	561	{
650	* since they never really need to be updated.
651	*/
652
653	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
654	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	562	LOG (llevError, "Object %s is freed but has speed.\n", &name);
655	#ifdef MANY_CORES
656	abort();
657	#else
658	op->speed = 0;	563	speed = 0;
659	#endif
660	}	564	}
661	if (arch_init) {
662	return;
663	}
664	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
665	/* If already on active list, don't do anything */
666	if (op->active_next || op->active_prev || op==active_objects)
667	return;
668		565
669	/* process_events() expects us to insert the object at the beginning	566	this->speed = speed;
670	* of the list. */	567
671	op->active_next = active_objects;	568	if (has_active_speed ())
672	if (op->active_next!=NULL)	569	activate ();
673	op->active_next->active_prev = op;
674	active_objects = op;
675	}
676	else {	570	else
677	/* If not on the active list, nothing needs to be done */	571	deactivate ();
678	if (!op->active_next && !op->active_prev && op!=active_objects)
679	return;
680
681	if (op->active_prev==NULL) {
682	active_objects = op->active_next;
683	if (op->active_next!=NULL)
684	op->active_next->active_prev = NULL;
685	}
686	else {
687	op->active_prev->active_next = op->active_next;
688	if (op->active_next)
689	op->active_next->active_prev = op->active_prev;
690	}
691	op->active_next = NULL;
692	op->active_prev = NULL;
693	}
694	}	572	}
695		573
696	/* This function removes object 'op' from the list of active
697	* objects.
698	* This should only be used for style maps or other such
699	* reference maps where you don't want an object that isn't
700	* in play chewing up cpu time getting processed.
701	* The reverse of this is to call update_ob_speed, which
702	* will do the right thing based on the speed of the object.
703	*/
704	void remove_from_active_list(object *op)
705	{
706	/* If not on the active list, nothing needs to be done */
707	if (!op->active_next && !op->active_prev && op!=active_objects)
708	return;
709
710	if (op->active_prev==NULL) {
711	active_objects = op->active_next;
712	if (op->active_next!=NULL)
713	op->active_next->active_prev = NULL;
714	}
715	else {
716	op->active_prev->active_next = op->active_next;
717	if (op->active_next)
718	op->active_next->active_prev = op->active_prev;
719	}
720	op->active_next = NULL;
721	op->active_prev = NULL;
722	}
723
724	/*	574	/*
725	* update_object() updates the array which represents the map.	575	* update_object() updates the the map.
726	* It takes into account invisible objects (and represent squares covered	576	* It takes into account invisible objects (and represent squares covered
727	* by invisible objects by whatever is below them (unless it's another	577	* by invisible objects by whatever is below them (unless it's another
728	* invisible object, etc...)	578	* invisible object, etc...)
729	* If the object being updated is beneath a player, the look-window	579	* If the object being updated is beneath a player, the look-window
730	* of that player is updated (this might be a suboptimal way of	580	* of that player is updated (this might be a suboptimal way of
731	* updating that window, though, since update_object() is called _often_)	581	* updating that window, though, since update_object() is called _often_)
732	*	582	*
733	* action is a hint of what the caller believes need to be done.	583	* action is a hint of what the caller believes need to be done.
734	* For example, if the only thing that has changed is the face (due to
735	* an animation), we don't need to call update_position until that actually
736	* comes into view of a player. OTOH, many other things, like addition/removal
737	* of walls or living creatures may need us to update the flags now.
738	* current action are:	584	* current action are:
739	* UP_OBJ_INSERT: op was inserted	585	* UP_OBJ_INSERT: op was inserted
740	* UP_OBJ_REMOVE: op was removed	586	* UP_OBJ_REMOVE: op was removed
741	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	587	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
742	* as that is easier than trying to look at what may have changed.	588	* as that is easier than trying to look at what may have changed.
743	* UP_OBJ_FACE: only the objects face has changed.	589	* UP_OBJ_FACE: only the objects face has changed.
744	*/	590	*/
745		591	void
746	void update_object(object *op, int action) {	592	update_object (object *op, int action)
747	int update_now=0, flags;	593	{
748	MoveType move_on, move_off, move_block, move_slow;	594	MoveType move_on, move_off, move_block, move_slow;
749		595
750	if (op == NULL) {	596	if (op == NULL)
		597	{
751	/* this should never happen */	598	/* this should never happen */
752	LOG(llevDebug,"update_object() called for NULL object.\n");	599	LOG (llevDebug, "update_object() called for NULL object.\n");
753	return;	600	return;
754	}
755		601	}
756	if(op->env!=NULL) {	602
		603	if (op->env)
		604	{
757	/* Animation is currently handled by client, so nothing	605	/* Animation is currently handled by client, so nothing
758	* to do in this case.	606	* to do in this case.
759	*/	607	*/
760	return;	608	return;
761	}	609	}
762		610
763	/* If the map is saving, don't do anything as everything is	611	/* If the map is saving, don't do anything as everything is
764	* going to get freed anyways.	612	* going to get freed anyways.
765	*/	613	*/
766	if (!op->map || op->map->in_memory == MAP_SAVING) return;	614	if (!op->map || op->map->in_memory == MAP_SAVING)
767		615	return;
		616
768	/* make sure the object is within map boundaries */	617	/* make sure the object is within map boundaries */
769	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	618	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
770	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	619	{
771	LOG(llevError,"update_object() called for object out of map!\n");	620	LOG (llevError, "update_object() called for object out of map!\n");
772	#ifdef MANY_CORES	621	#ifdef MANY_CORES
773	abort();	622	abort ();
774	#endif	623	#endif
775	return;	624	return;
776	}
777		625	}
778	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
779	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
780	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
781	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
782	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
783	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
784		626
		627	mapspace &m = op->ms ();
		628
		629	if (!(m.flags_ & P_UPTODATE))
		630	/* nop */;
785	if (action == UP_OBJ_INSERT) {	631	else if (action == UP_OBJ_INSERT)
		632	{
		633	// this is likely overkill, TODO: revisit (schmorp)
786	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	634	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
787	update_now=1;
788
789	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	635	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
790	update_now=1;	636	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
791		637	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		638	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
792	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	639	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
793	update_now=1;	640	|| (m.move_on | op->move_on ) != m.move_on
794
795	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
796	update_now=1;
797
798	if (op->type == SAFE_GROUND && !(flags & P_SAFE))
799	update_now=1;
800
801	if ((move_on | op->move_on) != move_on) update_now=1;
802
803	if ((move_off | op->move_off) != move_off) update_now=1;	641	|| (m.move_off | op->move_off ) != m.move_off
804		642	|| (m.move_slow | op->move_slow) != m.move_slow
805	/* This isn't perfect, but I don't expect a lot of objects to	643	/* This isn't perfect, but I don't expect a lot of objects to
806	* to have move_allow right now.	644	* to have move_allow right now.
807	*/	645	*/
808	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	646	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
809	update_now=1;	647	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
810		648	m.flags_ = 0;
811	if ((move_slow | op->move_slow) != move_slow)
812	update_now=1;
813	}	649	}
814	/* if the object is being removed, we can't make intelligent	650	/* if the object is being removed, we can't make intelligent
815	* decisions, because remove_ob can't really pass the object	651	* decisions, because remove_ob can't really pass the object
816	* that is being removed.	652	* that is being removed.
817	*/	653	*/
818	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	654	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
819	update_now=1;	655	m.flags_ = 0;
820	} else if (action == UP_OBJ_FACE) {	656	else if (action == UP_OBJ_FACE)
821	/* Nothing to do for that case */	657	/* Nothing to do for that case */ ;
822	}
823	else {	658	else
824	LOG(llevError,"update_object called with invalid action: %d\n", action);	659	LOG (llevError, "update_object called with invalid action: %d\n", action);
825	}
826		660
827	if (update_now) {
828	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
829	update_position(op->map, op->x, op->y);
830	}
831
832	if(op->more!=NULL)	661	if (op->more)
833	update_object(op->more, action);	662	update_object (op->more, action);
834	}
835
836	static std::vector<object *> mortals;
837
838	void object::free_mortals ()
839	{
840	for (std::vector<object *>::iterator i = mortals.begin (); i != mortals.end (); ++i)
841	delete *i;
842
843	mortals.clear ();
844	}	663	}
845		664
846	object::object ()	665	object::object ()
847	{	666	{
848	count = ++ob_count;
849
850	prev = 0;
851	next = objects;
852
853	if (objects)
854	objects->prev = this;
855
856	objects = this;
857
858	SET_FLAG (this, FLAG_REMOVED);	667	SET_FLAG (this, FLAG_REMOVED);
859		668
860	expmul = 1.0;	669	expmul = 1.0;
861	face = blank_face;	670	face = blank_face;
862	attacked_by_count = -1;
863	}	671	}
864		672
865	object::~object ()	673	object::~object ()
866	{	674	{
		675	free_key_values (this);
		676	}
		677
		678	static int object_count;
		679
		680	void object::link ()
		681	{
		682	assert (!index);//D
		683	uuid = gen_uuid ();
		684	count = ++object_count;
		685
		686	refcnt_inc ();
		687	objects.insert (this);
		688	}
		689
		690	void object::unlink ()
		691	{
		692	assert (index);//D
		693	objects.erase (this);
		694	refcnt_dec ();
		695	}
		696
		697	void
		698	object::activate ()
		699	{
		700	/* If already on active list, don't do anything */
		701	if (active)
		702	return;
		703
		704	if (has_active_speed ())
		705	actives.insert (this);
		706	}
		707
		708	void
		709	object::activate_recursive ()
		710	{
		711	activate ();
		712
		713	for (object *op = inv; op; op = op->below)
		714	op->activate_recursive ();
		715	}
		716
		717	/* This function removes object 'op' from the list of active
		718	* objects.
		719	* This should only be used for style maps or other such
		720	* reference maps where you don't want an object that isn't
		721	* in play chewing up cpu time getting processed.
		722	* The reverse of this is to call update_ob_speed, which
		723	* will do the right thing based on the speed of the object.
		724	*/
		725	void
		726	object::deactivate ()
		727	{
		728	/* If not on the active list, nothing needs to be done */
		729	if (!active)
		730	return;
		731
		732	actives.erase (this);
		733	}
		734
		735	void
		736	object::deactivate_recursive ()
		737	{
		738	for (object *op = inv; op; op = op->below)
		739	op->deactivate_recursive ();
		740
		741	deactivate ();
		742	}
		743
		744	void
		745	object::set_flag_inv (int flag, int value)
		746	{
		747	for (object *op = inv; op; op = op->below)
		748	{
		749	op->flag [flag] = value;
		750	op->set_flag_inv (flag, value);
		751	}
		752	}
		753
		754	/*
		755	* Remove and free all objects in the inventory of the given object.
		756	* object.c ?
		757	*/
		758	void
		759	object::destroy_inv (bool drop_to_ground)
		760	{
		761	// need to check first, because the checks below might segfault
		762	// as we might be on an invalid mapspace and crossfire code
		763	// is too buggy to ensure that the inventory is empty.
		764	// corollary: if you create arrows etc. with stuff in tis inventory,
		765	// cf will crash below with off-map x and y
		766	if (!inv)
		767	return;
		768
		769	/* Only if the space blocks everything do we not process -
		770	* if some form of movement is allowed, let objects
		771	* drop on that space.
		772	*/
		773	if (!drop_to_ground
		774	|| !map
		775	|| map->in_memory != MAP_IN_MEMORY
		776	|| ms ().move_block == MOVE_ALL)
		777	{
		778	while (inv)
		779	{
		780	inv->destroy_inv (drop_to_ground);
		781	inv->destroy ();
		782	}
		783	}
		784	else
		785	{ /* Put objects in inventory onto this space */
		786	while (inv)
		787	{
		788	object *op = inv;
		789
		790	if (op->flag [FLAG_STARTEQUIP]
		791	|| op->flag [FLAG_NO_DROP]
		792	|| op->type == RUNE
		793	|| op->type == TRAP
		794	|| op->flag [FLAG_IS_A_TEMPLATE]
		795	|| op->flag [FLAG_DESTROY_ON_DEATH])
		796	op->destroy ();
		797	else
		798	map->insert (op, x, y);
		799	}
		800	}
867	}	801	}
868		802
869	object *object::create ()	803	object *object::create ()
870	{	804	{
871	return new object;	805	object *op = new object;
		806	op->link ();
		807	return op;
872	}	808	}
873		809
874	/*
875	* free_object() frees everything allocated by an object, removes
876	* it from the list of used objects, and puts it on the list of
877	* free objects. The IS_FREED() flag is set in the object.
878	* The object must have been removed by remove_ob() first for
879	* this function to succeed.
880	*
881	* If free_inventory is set, free inventory as well. Else drop items in
882	* inventory to the ground.
883	*/
884	void	810	void
885	object::free (bool free_inventory)	811	object::do_destroy ()
886	{	812	{
887	if (!QUERY_FLAG (this, FLAG_REMOVED))	813	attachable::do_destroy ();
888	{
889	LOG (llevDebug, "Free object called with non removed object\n");
890	dump_object (this);
891	#ifdef MANY_CORES
892	abort ();
893	#endif
894	}
895		814
896	if (QUERY_FLAG (this, FLAG_FRIENDLY))	815	if (flag [FLAG_IS_LINKED])
897	{	816	remove_button_link (this);
898	LOG (llevMonster, "Warning: tried to free friendly object.\n");	817
		818	if (flag [FLAG_FRIENDLY])
899	remove_friendly_object (this);	819	remove_friendly_object (this);
900	}
901		820
902	if (QUERY_FLAG (this, FLAG_FREED))	821	if (!flag [FLAG_REMOVED])
		822	remove ();
		823
		824	destroy_inv (true);
		825
		826	deactivate ();
		827	unlink ();
		828
		829	flag [FLAG_FREED] = 1;
		830
		831	// hack to ensure that freed objects still have a valid map
		832	{
		833	static maptile *freed_map; // freed objects are moved here to avoid crashes
		834
		835	if (!freed_map)
903	{	836	{
904	dump_object (this);	837	freed_map = new maptile;
905	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	838
906	return;	839	freed_map->name = "/internal/freed_objects_map";
		840	freed_map->width = 3;
		841	freed_map->height = 3;
		842
		843	freed_map->alloc ();
		844	freed_map->in_memory = MAP_IN_MEMORY;
907	}	845	}
		846
		847	map = freed_map;
		848	x = 1;
		849	y = 1;
		850	}
		851
		852	head = 0;
908		853
909	if (more)	854	if (more)
910	{	855	{
911	more->free (free_inventory);	856	more->destroy ();
912	more = 0;	857	more = 0;
913	}	858	}
914		859
915	if (inv)	860	// clear those pointers that likely might have circular references to us
916	{	861	owner = 0;
917	/* Only if the space blocks everything do we not process -	862	enemy = 0;
918	* if some form of movement is allowed, let objects	863	attacked_by = 0;
919	* drop on that space.
920	*/
921	if (free_inventory || !map
922	|| map->in_memory != MAP_IN_MEMORY
923	|| (GET_MAP_MOVE_BLOCK (map, x, y) == MOVE_ALL))
924	{
925	object *op = inv;
926
927	while (op)
928	{
929	object *tmp = op->below;
930	remove_ob (op);
931	op->free (free_inventory);
932	op = tmp;
933	}
934	}
935	else
936	{ /* Put objects in inventory onto this space */
937	object *op = inv;
938
939	while (op)
940	{
941	object *tmp = op->below;
942	remove_ob (op);
943
944	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
945	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
946	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
947	free_object (op);
948	else
949	{
950	op->x = x;
951	op->y = y;
952	insert_ob_in_map (op, map, 0, 0); /* Insert in same map as the envir */
953	}
954
955	op = tmp;
956	}
957	}
958	}
959
960	/* Remove object from the active list */
961	speed = 0;
962	update_ob_speed (this);
963
964	SET_FLAG (this, FLAG_FREED);
965
966	mortalise ();
967	}	864	}
968		865
969	void	866	void
970	object::mortalise ()	867	object::destroy (bool destroy_inventory)
971	{	868	{
972	count = 0;	869	if (destroyed ())
		870	return;
973		871
974	/* Remove this object from the list of used objects */	872	if (destroy_inventory)
975	if (prev) prev->next = next;	873	destroy_inv (false);
976	if (next) next->prev = prev;
977	if (this == objects) objects = next;
978		874
979	free_key_values (this);	875	attachable::destroy ();
980
981	mortals.push_back (this);
982	}	876	}
983		877
984	/*	878	/*
985	* sub_weight() recursively (outwards) subtracts a number from the	879	* sub_weight() recursively (outwards) subtracts a number from the
986	* weight of an object (and what is carried by it's environment(s)).	880	* weight of an object (and what is carried by it's environment(s)).
987	*/	881	*/
988		882	void
989	void sub_weight (object *op, signed long weight) {	883	sub_weight (object *op, signed long weight)
		884	{
990	while (op != NULL) {	885	while (op != NULL)
		886	{
991	if (op->type == CONTAINER) {	887	if (op->type == CONTAINER)
992	weight=(signed long)(weight*(100-op->stats.Str)/100);	888	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
993	}	889
994	op->carrying-=weight;	890	op->carrying -= weight;
995	op = op->env;	891	op = op->env;
996	}	892	}
997	}	893	}
998		894
999	/* remove_ob(op):	895	/* op->remove ():
1000	* This function removes the object op from the linked list of objects	896	* This function removes the object op from the linked list of objects
1001	* which it is currently tied to. When this function is done, the	897	* which it is currently tied to. When this function is done, the
1002	* object will have no environment. If the object previously had an	898	* object will have no environment. If the object previously had an
1003	* environment, the x and y coordinates will be updated to	899	* environment, the x and y coordinates will be updated to
1004	* the previous environment.	900	* the previous environment.
1005	* Beware: This function is called from the editor as well!	901	* Beware: This function is called from the editor as well!
1006	*/	902	*/
1007		903	void
1008	void remove_ob(object *op) {	904	object::remove ()
		905	{
1009	object *tmp,*last=NULL;	906	object *tmp, *last = 0;
1010	object *otmp;	907	object *otmp;
1011	tag_t tag;
1012	int check_walk_off;
1013	mapstruct *m;
1014	sint16 x,y;
1015
1016		908
1017	if(QUERY_FLAG(op,FLAG_REMOVED)) {	909	if (QUERY_FLAG (this, FLAG_REMOVED))
1018	dump_object(op);	910	return;
1019	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1020		911
1021	/* Changed it to always dump core in this case. As has been learned
1022	* in the past, trying to recover from errors almost always
1023	* make things worse, and this is a real error here - something
1024	* that should not happen.
1025	* Yes, if this was a mission critical app, trying to do something
1026	* to recover may make sense, but that is because failure of the app
1027	* may have other disastrous problems. Cf runs out of a script
1028	* so is easily enough restarted without any real problems.
1029	* MSW 2001-07-01
1030	*/
1031	abort();
1032	}
1033	if(op->more!=NULL)
1034	remove_ob(op->more);
1035
1036	SET_FLAG(op, FLAG_REMOVED);	912	SET_FLAG (this, FLAG_REMOVED);
		913	INVOKE_OBJECT (REMOVE, this);
1037		914
		915	if (more)
		916	more->remove ();
		917
1038	/*	918	/*
1039	* In this case, the object to be removed is in someones	919	* In this case, the object to be removed is in someones
1040	* inventory.	920	* inventory.
1041	*/	921	*/
1042	if(op->env!=NULL) {	922	if (env)
		923	{
1043	if(op->nrof)	924	if (nrof)
1044	sub_weight(op->env, op->weight*op->nrof);	925	sub_weight (env, weight * nrof);
1045	else	926	else
1046	sub_weight(op->env, op->weight+op->carrying);	927	sub_weight (env, weight + carrying);
1047		928
1048	/* NO_FIX_PLAYER is set when a great many changes are being	929	/* NO_FIX_PLAYER is set when a great many changes are being
1049	* made to players inventory. If set, avoiding the call	930	* made to players inventory. If set, avoiding the call
1050	* to save cpu time.	931	* to save cpu time.
1051	*/	932	*/
1052	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	933	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1053	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	934	otmp->update_stats ();
1054	fix_player(otmp);
1055		935
1056	if(op->above!=NULL)	936	if (above)
1057	op->above->below=op->below;	937	above->below = below;
1058	else	938	else
1059	op->env->inv=op->below;	939	env->inv = below;
1060		940
1061	if(op->below!=NULL)	941	if (below)
1062	op->below->above=op->above;	942	below->above = above;
1063		943
1064	/* we set up values so that it could be inserted into	944	/* we set up values so that it could be inserted into
1065	* the map, but we don't actually do that - it is up	945	* the map, but we don't actually do that - it is up
1066	* to the caller to decide what we want to do.	946	* to the caller to decide what we want to do.
		947	*/
		948	x = env->x, y = env->y;
		949	map = env->map;
		950	above = 0, below = 0;
		951	env = 0;
		952	}
		953	else if (map)
		954	{
		955	if (type == PLAYER)
		956	{
		957	--map->players;
		958	map->touch ();
		959	}
		960
		961	map->dirty = true;
		962
		963	/* link the object above us */
		964	if (above)
		965	above->below = below;
		966	else
		967	map->at (x, y).top = below; /* we were top, set new top */
		968
		969	/* Relink the object below us, if there is one */
		970	if (below)
		971	below->above = above;
		972	else
		973	{
		974	/* Nothing below, which means we need to relink map object for this space
		975	* use translated coordinates in case some oddness with map tiling is
		976	* evident
1067	*/	977	*/
1068	op->x=op->env->x,op->y=op->env->y;	978	if (GET_MAP_OB (map, x, y) != this)
1069	op->map=op->env->map;	979	{
1070	op->above=NULL,op->below=NULL;	980	char *dump = dump_object (this);
1071	op->env=NULL;	981	LOG (llevError,
		982	"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);
		983	free (dump);
		984	dump = dump_object (GET_MAP_OB (map, x, y));
		985	LOG (llevError, "%s\n", dump);
		986	free (dump);
		987	}
		988
		989	map->at (x, y).bot = above; /* goes on above it. */
		990	}
		991
		992	above = 0;
		993	below = 0;
		994
		995	if (map->in_memory == MAP_SAVING)
1072	return;	996	return;
1073	}
1074		997
1075	/* If we get here, we are removing it from a map */	998	int check_walk_off = !flag [FLAG_NO_APPLY];
1076	if (op->map == NULL) return;
1077		999
1078	x = op->x;	1000	for (tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
1079	y = op->y;
1080	m = get_map_from_coord(op->map, &x, &y);
1081
1082	if (!m) {
1083	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1084	op->map->path, op->x, op->y);
1085	/* in old days, we used to set x and y to 0 and continue.
1086	* it seems if we get into this case, something is probablye
1087	* screwed up and should be fixed.
1088	*/
1089	abort();
1090	}
1091	if (op->map != m) {
1092	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1093	op->map->path, m->path, op->x, op->y, x, y);
1094	}
1095
1096	/* Re did the following section of code - it looks like it had
1097	* lots of logic for things we no longer care about
1098	*/
1099
1100	/* link the object above us */
1101	if (op->above)
1102	op->above->below=op->below;
1103	else
1104	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1105
1106	/* Relink the object below us, if there is one */
1107	if(op->below) {
1108	op->below->above=op->above;
1109	} else {
1110	/* Nothing below, which means we need to relink map object for this space
1111	* use translated coordinates in case some oddness with map tiling is
1112	* evident
1113	*/
1114	if(GET_MAP_OB(m,x,y)!=op) {
1115	dump_object(op);
1116	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);
1117	dump_object(GET_MAP_OB(m,x,y));
1118	LOG(llevError,"%s\n",errmsg);
1119	}	1001	{
1120	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1121	}
1122	op->above=NULL;
1123	op->below=NULL;
1124
1125	if (op->map->in_memory == MAP_SAVING)
1126	return;
1127
1128	tag = op->count;
1129	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1130	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1131	/* No point updating the players look faces if he is the object	1002	/* No point updating the players look faces if he is the object
1132	* being removed.	1003	* being removed.
1133	*/	1004	*/
1134		1005
1135	if(tmp->type==PLAYER && tmp!=op) {	1006	if (tmp->type == PLAYER && tmp != this)
		1007	{
1136	/* If a container that the player is currently using somehow gets	1008	/* If a container that the player is currently using somehow gets
1137	* removed (most likely destroyed), update the player view	1009	* removed (most likely destroyed), update the player view
1138	* appropriately.	1010	* appropriately.
1139	*/	1011	*/
1140	if (tmp->container==op) {	1012	if (tmp->container == this)
1141	CLEAR_FLAG(op, FLAG_APPLIED);	1013	{
		1014	flag [FLAG_APPLIED] = 0;
1142	tmp->container=NULL;	1015	tmp->container = 0;
		1016	}
		1017
		1018	if (tmp->contr->ns)
		1019	tmp->contr->ns->floorbox_update ();
1143	}	1020	}
1144	tmp->contr->socket.update_look=1;	1021
1145	}
1146	/* See if player moving off should effect something */	1022	/* See if object moving off should effect something */
1147	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1023	if (check_walk_off
		1024	&& ((move_type & tmp->move_off)
1148	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1025	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1149		1026	{
1150	move_apply(tmp, op, NULL);	1027	move_apply (tmp, this, 0);
		1028
1151	if (was_destroyed (op, tag)) {	1029	if (destroyed ())
1152	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "	1030	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1153	"leaving object\n", &tmp->name, &tmp->arch->name);
1154	}	1031	}
1155	}
1156		1032
1157	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1033	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1158		1034	//TODO: why is this horrible hacka fix? get rid of this code=bug! (schmorp)
1159	if(tmp->above == tmp)	1035	if (tmp->above == tmp)
1160	tmp->above = NULL;	1036	tmp->above = 0;
		1037
1161	last=tmp;	1038	last = tmp;
1162	}	1039	}
		1040
1163	/* last == NULL of there are no objects on this space */	1041	/* last == NULL if there are no objects on this space */
1164	if (last==NULL) {	1042	//TODO: this makes little sense, why only update the topmost object?
1165	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1043	if (!last)
1166	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1044	map->at (x, y).flags_ = 0;
1167	* those out anyways, and if there are any flags set right now, they won't
1168	* be correct anyways.
1169	*/
1170	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1171	update_position(op->map, op->x, op->y);
1172	}
1173	else	1045	else
1174	update_object(last, UP_OBJ_REMOVE);	1046	update_object (last, UP_OBJ_REMOVE);
1175		1047
1176	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1048	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1177	update_all_los(op->map, op->x, op->y);	1049	update_all_los (map, x, y);
1178		1050	}
1179	}	1051	}
1180		1052
1181	/*	1053	/*
1182	* merge_ob(op,top):	1054	* merge_ob(op,top):
1183	*	1055	*
1184	* This function goes through all objects below and including top, and	1056	* This function goes through all objects below and including top, and
1185	* merges op to the first matching object.	1057	* merges op to the first matching object.
1186	* If top is NULL, it is calculated.	1058	* If top is NULL, it is calculated.
1187	* Returns pointer to object if it succeded in the merge, otherwise NULL	1059	* Returns pointer to object if it succeded in the merge, otherwise NULL
1188	*/	1060	*/
1189		1061	object *
1190	object *merge_ob(object *op, object *top) {	1062	merge_ob (object *op, object *top)
		1063	{
1191	if(!op->nrof)	1064	if (!op->nrof)
1192	return 0;	1065	return 0;
1193	if(top==NULL)	1066
		1067	if (top)
1194	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1068	for (top = op; top && top->above; top = top->above)
		1069	;
		1070
1195	for(;top!=NULL;top=top->below) {	1071	for (; top; top = top->below)
		1072	{
1196	if(top==op)	1073	if (top == op)
1197	continue;	1074	continue;
1198	if (CAN_MERGE(op,top))	1075
1199	{	1076	if (object::can_merge (op, top))
		1077	{
1200	top->nrof+=op->nrof;	1078	top->nrof += op->nrof;
		1079
1201	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1080	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1202	op->weight = 0; /* Don't want any adjustements now */	1081	op->weight = 0; /* Don't want any adjustements now */
1203	remove_ob(op);	1082	op->destroy ();
1204	free_object(op);
1205	return top;	1083	return top;
1206	}	1084	}
1207	}	1085	}
		1086
1208	return NULL;	1087	return 0;
1209	}	1088	}
1210		1089
1211	/*	1090	/*
1212	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1091	* same as insert_ob_in_map except it handle separate coordinates and do a clean
1213	* job preparing multi-part monsters	1092	* job preparing multi-part monsters
1214	*/	1093	*/
		1094	object *
1215	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1095	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1216	object* tmp;	1096	{
1217	if (op->head)	1097	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1218	op=op->head;	1098	{
1219	for (tmp=op;tmp;tmp=tmp->more){
1220	tmp->x=x+tmp->arch->clone.x;	1099	tmp->x = x + tmp->arch->clone.x;
1221	tmp->y=y+tmp->arch->clone.y;	1100	tmp->y = y + tmp->arch->clone.y;
1222	}	1101	}
		1102
1223	return insert_ob_in_map (op, m, originator, flag);	1103	return insert_ob_in_map (op, m, originator, flag);
1224	}	1104	}
1225		1105
1226	/*	1106	/*
1227	* insert_ob_in_map (op, map, originator, flag):	1107	* insert_ob_in_map (op, map, originator, flag):
1228	* This function inserts the object in the two-way linked list	1108	* This function inserts the object in the two-way linked list
…		…
1241	* Return value:	1121	* Return value:
1242	* new object if 'op' was merged with other object	1122	* new object if 'op' was merged with other object
1243	* NULL if 'op' was destroyed	1123	* NULL if 'op' was destroyed
1244	* just 'op' otherwise	1124	* just 'op' otherwise
1245	*/	1125	*/
1246		1126	object *
1247	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1127	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1248	{	1128	{
1249	object *tmp, *top, *floor=NULL;	1129	object *tmp, *top, *floor = NULL;
1250	sint16 x,y;	1130	sint16 x, y;
1251		1131
1252	if (QUERY_FLAG (op, FLAG_FREED)) {	1132	if (QUERY_FLAG (op, FLAG_FREED))
		1133	{
1253	LOG (llevError, "Trying to insert freed object!\n");	1134	LOG (llevError, "Trying to insert freed object!\n");
1254	return NULL;	1135	return NULL;
		1136	}
		1137
		1138	if (!m)
1255	}	1139	{
1256	if(m==NULL) {
1257	dump_object(op);	1140	char *dump = dump_object (op);
1258	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);	1141	LOG (llevError, "Trying to insert in null-map!\n%s\n", dump);
		1142	free (dump);
1259	return op;	1143	return op;
1260	}	1144	}
		1145
1261	if(out_of_map(m,op->x,op->y)) {	1146	if (out_of_map (m, op->x, op->y))
		1147	{
1262	dump_object(op);	1148	char *dump = dump_object (op);
1263	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1149	LOG (llevError, "Trying to insert object outside the map.\n%s\n", dump);
1264	#ifdef MANY_CORES	1150	#ifdef MANY_CORES
1265	/* Better to catch this here, as otherwise the next use of this object	1151	/* Better to catch this here, as otherwise the next use of this object
1266	* is likely to cause a crash. Better to find out where it is getting	1152	* is likely to cause a crash. Better to find out where it is getting
1267	* improperly inserted.	1153	* improperly inserted.
1268	*/	1154	*/
1269	abort();	1155	abort ();
1270	#endif	1156	#endif
		1157	free (dump);
1271	return op;	1158	return op;
1272	}	1159	}
		1160
1273	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1161	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1162	{
1274	dump_object(op);	1163	char *dump = dump_object (op);
1275	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);	1164	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", dump);
		1165	free (dump);
1276	return op;	1166	return op;
		1167	}
		1168
		1169	if (op->more)
1277	}	1170	{
1278	if(op->more!=NULL) {
1279	/* The part may be on a different map. */	1171	/* The part may be on a different map. */
1280		1172
1281	object *more = op->more;	1173	object *more = op->more;
1282		1174
1283	/* We really need the caller to normalize coordinates - if	1175	/* We really need the caller to normalise coordinates - if
1284	* we set the map, that doesn't work if the location is within	1176	* we set the map, that doesn't work if the location is within
1285	* a map and this is straddling an edge. So only if coordinate	1177	* a map and this is straddling an edge. So only if coordinate
1286	* is clear wrong do we normalize it.	1178	* is clear wrong do we normalise it.
1287	*/	1179	*/
1288	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1180	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1289	more->map = get_map_from_coord(m, &more->x, &more->y);	1181	more->map = get_map_from_coord (m, &more->x, &more->y);
1290	} else if (!more->map) {	1182	else if (!more->map)
		1183	{
1291	/* For backwards compatibility - when not dealing with tiled maps,	1184	/* For backwards compatibility - when not dealing with tiled maps,
1292	* more->map should always point to the parent.	1185	* more->map should always point to the parent.
1293	*/	1186	*/
1294	more->map = m;	1187	more->map = m;
1295	}	1188	}
1296		1189
1297	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1190	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1191	{
1298	if ( ! op->head)	1192	if (!op->head)
1299	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1193	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
		1194
1300	return NULL;	1195	return 0;
1301	}	1196	}
1302	}	1197	}
		1198
1303	CLEAR_FLAG(op,FLAG_REMOVED);	1199	CLEAR_FLAG (op, FLAG_REMOVED);
1304		1200
1305	/* Ideally, the caller figures this out. However, it complicates a lot	1201	/* Ideally, the caller figures this out. However, it complicates a lot
1306	* of areas of callers (eg, anything that uses find_free_spot would now	1202	* of areas of callers (eg, anything that uses find_free_spot would now
1307	* need extra work	1203	* need extra work
1308	*/	1204	*/
1309	op->map=get_map_from_coord(m, &op->x, &op->y);	1205	op->map = get_map_from_coord (m, &op->x, &op->y);
1310	x = op->x;	1206	x = op->x;
1311	y = op->y;	1207	y = op->y;
1312		1208
1313	/* this has to be done after we translate the coordinates.	1209	/* this has to be done after we translate the coordinates.
1314	*/	1210	*/
1315	if(op->nrof && !(flag & INS_NO_MERGE)) {	1211	if (op->nrof && !(flag & INS_NO_MERGE))
1316	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1212	for (tmp = GET_MAP_OB (op->map, x, y); tmp; tmp = tmp->above)
1317	if (CAN_MERGE(op,tmp)) {	1213	if (object::can_merge (op, tmp))
		1214	{
1318	op->nrof+=tmp->nrof;	1215	op->nrof += tmp->nrof;
1319	remove_ob(tmp);	1216	tmp->destroy ();
1320	free_object(tmp);	1217	}
		1218
		1219	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1220	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1221
		1222	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1223	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1224
		1225	if (flag & INS_BELOW_ORIGINATOR)
		1226	{
		1227	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1228	{
		1229	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1230	abort ();
		1231	}
		1232
		1233	op->above = originator;
		1234	op->below = originator->below;
		1235
		1236	if (op->below)
		1237	op->below->above = op;
		1238	else
		1239	op->ms ().bot = op;
		1240
		1241	/* since *below* originator, no need to update top */
		1242	originator->below = op;
		1243	}
		1244	else
		1245	{
		1246	/* If there are other objects, then */
		1247	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))
		1248	{
		1249	object *last = 0;
		1250
		1251	/*
		1252	* If there are multiple objects on this space, we do some trickier handling.
		1253	* We've already dealt with merging if appropriate.
		1254	* Generally, we want to put the new object on top. But if
		1255	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1256	* floor, we want to insert above that and no further.
		1257	* Also, if there are spell objects on this space, we stop processing
		1258	* once we get to them. This reduces the need to traverse over all of
		1259	* them when adding another one - this saves quite a bit of cpu time
		1260	* when lots of spells are cast in one area. Currently, it is presumed
		1261	* that flying non pickable objects are spell objects.
		1262	*/
		1263	while (top)
		1264	{
		1265	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1266	floor = top;
		1267
		1268	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1269	{
		1270	/* We insert above top, so we want this object below this */
		1271	top = top->below;
		1272	break;
		1273	}
		1274
		1275	last = top;
		1276	top = top->above;
1321	}	1277	}
1322	}
1323		1278
1324	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1279	/* Don't want top to be NULL, so set it to the last valid object */
1325	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1280	top = last;
1326	if (!QUERY_FLAG(op, FLAG_ALIVE))
1327	CLEAR_FLAG(op, FLAG_NO_STEAL);
1328		1281
1329	if (flag & INS_BELOW_ORIGINATOR) {	1282	/* We let update_position deal with figuring out what the space
1330	if (originator->map != op->map || originator->x != op->x ||	1283	* looks like instead of lots of conditions here.
1331	originator->y != op->y) {	1284	* makes things faster, and effectively the same result.
1332	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1333	abort();
1334	}
1335	op->above = originator;
1336	op->below = originator->below;
1337	if (op->below) op->below->above = op;
1338	else SET_MAP_OB(op->map, op->x, op->y, op);
1339	/* since *below* originator, no need to update top */
1340	originator->below = op;
1341	} else {
1342	/* If there are other objects, then */
1343	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1344	object *last=NULL;
1345	/*	1285	*/
1346	* If there are multiple objects on this space, we do some trickier handling.	1286
1347	* We've already dealt with merging if appropriate.	1287	/* Have object 'fall below' other objects that block view.
1348	* Generally, we want to put the new object on top. But if	1288	* Unless those objects are exits, type 66
1349	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1289	* If INS_ON_TOP is used, don't do this processing
1350	* floor, we want to insert above that and no further.	1290	* Need to find the object that in fact blocks view, otherwise
1351	* Also, if there are spell objects on this space, we stop processing	1291	* stacking is a bit odd.
1352	* once we get to them. This reduces the need to traverse over all of	1292	*/
1353	* them when adding another one - this saves quite a bit of cpu time	1293	if (!(flag & INS_ON_TOP) &&
1354	* when lots of spells are cast in one area. Currently, it is presumed	1294	(get_map_flags (op->map, 0, op->x, op->y, 0, 0) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))
1355	* that flying non pickable objects are spell objects.	1295	{
		1296	for (last = top; last != floor; last = last->below)
		1297	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1298	break;
		1299	/* Check to see if we found the object that blocks view,
		1300	* and make sure we have a below pointer for it so that
		1301	* we can get inserted below this one, which requires we
		1302	* set top to the object below us.
1356	*/	1303	*/
1357		1304	if (last && last->below && last != floor)
1358	while (top != NULL) {
1359	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1360	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1361	if (QUERY_FLAG(top, FLAG_NO_PICK)
1362	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1363	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1364	{
1365	/* We insert above top, so we want this object below this */
1366	top=top->below;
1367	break;
1368	}
1369	last = top;
1370	top = top->above;	1305	top = last->below;
1371	}	1306	}
1372	/* Don't want top to be NULL, so set it to the last valid object */
1373	top = last;
1374
1375	/* We let update_position deal with figuring out what the space
1376	* looks like instead of lots of conditions here.
1377	* makes things faster, and effectively the same result.
1378	*/
1379
1380	/* Have object 'fall below' other objects that block view.
1381	* Unless those objects are exits, type 66
1382	* If INS_ON_TOP is used, don't do this processing
1383	* Need to find the object that in fact blocks view, otherwise
1384	* stacking is a bit odd.
1385	*/
1386	if (!(flag & INS_ON_TOP) &&
1387	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1388	(op->face && !op->face->visibility)) {
1389	for (last=top; last != floor; last=last->below)
1390	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1391	/* Check to see if we found the object that blocks view,
1392	* and make sure we have a below pointer for it so that
1393	* we can get inserted below this one, which requires we
1394	* set top to the object below us.
1395	*/
1396	if (last && last->below && last != floor) top=last->below;
1397	}
1398	} /* If objects on this space */	1307	} /* If objects on this space */
		1308
1399	if (flag & INS_MAP_LOAD)	1309	if (flag & INS_MAP_LOAD)
1400	top = GET_MAP_TOP(op->map,op->x,op->y);	1310	top = GET_MAP_TOP (op->map, op->x, op->y);
		1311
1401	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1312	if (flag & INS_ABOVE_FLOOR_ONLY)
		1313	top = floor;
1402		1314
1403	/* Top is the object that our object (op) is going to get inserted above.	1315	/* Top is the object that our object (op) is going to get inserted above.
1404	*/	1316	*/
1405		1317
1406	/* First object on this space */	1318	/* First object on this space */
1407	if (!top) {	1319	if (!top)
		1320	{
1408	op->above = GET_MAP_OB(op->map, op->x, op->y);	1321	op->above = GET_MAP_OB (op->map, op->x, op->y);
		1322
		1323	if (op->above)
1409	if (op->above) op->above->below = op;	1324	op->above->below = op;
		1325
1410	op->below = NULL;	1326	op->below = 0;
1411	SET_MAP_OB(op->map, op->x, op->y, op);	1327	op->ms ().bot = op;
		1328	}
		1329	else
1412	} else { /* get inserted into the stack above top */	1330	{ /* get inserted into the stack above top */
1413	op->above = top->above;	1331	op->above = top->above;
		1332
		1333	if (op->above)
1414	if (op->above) op->above->below = op;	1334	op->above->below = op;
		1335
1415	op->below = top;	1336	op->below = top;
1416	top->above = op;	1337	top->above = op;
1417	}	1338	}
		1339
1418	if (op->above==NULL)	1340	if (!op->above)
1419	SET_MAP_TOP(op->map,op->x, op->y, op);	1341	op->ms ().top = op;
1420	} /* else not INS_BELOW_ORIGINATOR */	1342	} /* else not INS_BELOW_ORIGINATOR */
1421		1343
1422	if(op->type==PLAYER)	1344	if (op->type == PLAYER)
		1345	{
1423	op->contr->do_los=1;	1346	op->contr->do_los = 1;
		1347	++op->map->players;
		1348	op->map->touch ();
		1349	}
1424		1350
		1351	op->map->dirty = true;
		1352
1425	/* If we have a floor, we know the player, if any, will be above	1353	/* If we have a floor, we know the player, if any, will be above
1426	* it, so save a few ticks and start from there.	1354	* it, so save a few ticks and start from there.
1427	*/	1355	*/
1428	if (!(flag & INS_MAP_LOAD))	1356	if (!(flag & INS_MAP_LOAD))
1429	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1357	if (object *pl = op->ms ().player ())
1430	if (tmp->type == PLAYER)	1358	if (pl->contr->ns)
1431	tmp->contr->socket.update_look=1;	1359	pl->contr->ns->floorbox_update ();
1432	}
1433		1360
1434	/* If this object glows, it may affect lighting conditions that are	1361	/* If this object glows, it may affect lighting conditions that are
1435	* visible to others on this map. But update_all_los is really	1362	* visible to others on this map. But update_all_los is really
1436	* an inefficient way to do this, as it means los for all players	1363	* an inefficient way to do this, as it means los for all players
1437	* on the map will get recalculated. The players could very well	1364	* on the map will get recalculated. The players could very well
1438	* be far away from this change and not affected in any way -	1365	* be far away from this change and not affected in any way -
1439	* this should get redone to only look for players within range,	1366	* this should get redone to only look for players within range,
1440	* or just updating the P_NEED_UPDATE for spaces within this area	1367	* or just updating the P_UPTODATE for spaces within this area
1441	* of effect may be sufficient.	1368	* of effect may be sufficient.
1442	*/	1369	*/
1443	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1370	if (op->map->darkness && (op->glow_radius != 0))
1444	update_all_los(op->map, op->x, op->y);	1371	update_all_los (op->map, op->x, op->y);
1445		1372
1446
1447	/* updates flags (blocked, alive, no magic, etc) for this map space */	1373	/* updates flags (blocked, alive, no magic, etc) for this map space */
1448	update_object(op,UP_OBJ_INSERT);	1374	update_object (op, UP_OBJ_INSERT);
1449		1375
		1376	INVOKE_OBJECT (INSERT, op);
1450		1377
1451	/* Don't know if moving this to the end will break anything. However,	1378	/* Don't know if moving this to the end will break anything. However,
1452	* we want to have update_look set above before calling this.	1379	* we want to have floorbox_update called before calling this.
1453	*	1380	*
1454	* check_move_on() must be after this because code called from	1381	* check_move_on() must be after this because code called from
1455	* check_move_on() depends on correct map flags (so functions like	1382	* check_move_on() depends on correct map flags (so functions like
1456	* blocked() and wall() work properly), and these flags are updated by	1383	* blocked() and wall() work properly), and these flags are updated by
1457	* update_object().	1384	* update_object().
1458	*/	1385	*/
1459		1386
1460	/* if this is not the head or flag has been passed, don't check walk on status */	1387	/* if this is not the head or flag has been passed, don't check walk on status */
1461
1462	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1388	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1389	{
1463	if (check_move_on(op, originator))	1390	if (check_move_on (op, originator))
1464	return NULL;	1391	return 0;
1465		1392
1466	/* If we are a multi part object, lets work our way through the check	1393	/* If we are a multi part object, lets work our way through the check
1467	* walk on's.	1394	* walk on's.
1468	*/	1395	*/
1469	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1396	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1470	if (check_move_on (tmp, originator))	1397	if (check_move_on (tmp, originator))
1471	return NULL;	1398	return 0;
1472	}	1399	}
		1400
1473	return op;	1401	return op;
1474	}	1402	}
1475		1403
1476	/* this function inserts an object in the map, but if it	1404	/* this function inserts an object in the map, but if it
1477	* finds an object of its own type, it'll remove that one first.	1405	* finds an object of its own type, it'll remove that one first.
1478	* op is the object to insert it under: supplies x and the map.	1406	* op is the object to insert it under: supplies x and the map.
1479	*/	1407	*/
		1408	void
1480	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1409	replace_insert_ob_in_map (const char *arch_string, object *op)
1481	object *tmp;	1410	{
1482	object *tmp1;	1411	object *tmp, *tmp1;
1483		1412
1484	/* first search for itself and remove any old instances */	1413	/* first search for itself and remove any old instances */
1485		1414
1486	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1415	for (tmp = op->ms ().bot; tmp; tmp = tmp->above)
1487	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1416	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1488	remove_ob(tmp);	1417	tmp->destroy ();
1489	free_object(tmp);
1490	}
1491	}
1492		1418
1493	tmp1=arch_to_object(find_archetype(arch_string));	1419	tmp1 = arch_to_object (archetype::find (arch_string));
1494		1420
1495		1421	tmp1->x = op->x;
1496	tmp1->x = op->x; tmp1->y = op->y;	1422	tmp1->y = op->y;
1497	insert_ob_in_map(tmp1,op->map,op,0);	1423	insert_ob_in_map (tmp1, op->map, op, 0);
1498	}	1424	}
		1425
		1426	object *
		1427	object::insert_at (object *where, object *originator, int flags)
		1428	{
		1429	where->map->insert (this, where->x, where->y, originator, flags);
		1430	}
1499		1431
1500	/*	1432	/*
1501	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1433	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1502	* is returned contains nr objects, and the remaining parts contains	1434	* is returned contains nr objects, and the remaining parts contains
1503	* the rest (or is removed and freed if that number is 0).	1435	* the rest (or is removed and freed if that number is 0).
1504	* On failure, NULL is returned, and the reason put into the	1436	* On failure, NULL is returned, and the reason put into the
1505	* global static errmsg array.	1437	* global static errmsg array.
1506	*/	1438	*/
1507		1439	object *
1508	object *get_split_ob(object *orig_ob, uint32 nr) {	1440	get_split_ob (object *orig_ob, uint32 nr)
		1441	{
1509	object *newob;	1442	object *newob;
1510	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1443	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1511		1444
1512	if(orig_ob->nrof<nr) {	1445	if (orig_ob->nrof < nr)
1513	sprintf(errmsg,"There are only %d %ss.",	1446	{
1514	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1447	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1515	return NULL;	1448	return NULL;
1516	}	1449	}
		1450
1517	newob = object_create_clone(orig_ob);	1451	newob = object_create_clone (orig_ob);
		1452
1518	if((orig_ob->nrof-=nr)<1) {	1453	if ((orig_ob->nrof -= nr) < 1)
1519	if ( ! is_removed)	1454	orig_ob->destroy (1);
1520	remove_ob(orig_ob);
1521	free_object2(orig_ob, 1);
1522	}
1523	else if ( ! is_removed) {	1455	else if (!is_removed)
		1456	{
1524	if(orig_ob->env!=NULL)	1457	if (orig_ob->env != NULL)
1525	sub_weight (orig_ob->env,orig_ob->weight*nr);	1458	sub_weight (orig_ob->env, orig_ob->weight * nr);
1526	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1459	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1460	{
1527	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1461	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1528	LOG(llevDebug,
1529	"Error, Tried to split object whose map is not in memory.\n");	1462	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1530	return NULL;	1463	return NULL;
1531	}	1464	}
1532	}	1465	}
		1466
1533	newob->nrof=nr;	1467	newob->nrof = nr;
1534		1468
1535	return newob;	1469	return newob;
1536	}	1470	}
1537		1471
1538	/*	1472	/*
1539	* decrease_ob_nr(object, number) decreases a specified number from	1473	* decrease_ob_nr(object, number) decreases a specified number from
1540	* the amount of an object. If the amount reaches 0, the object	1474	* the amount of an object. If the amount reaches 0, the object
1541	* is subsequently removed and freed.	1475	* is subsequently removed and freed.
1542	*	1476	*
1543	* Return value: 'op' if something is left, NULL if the amount reached 0	1477	* Return value: 'op' if something is left, NULL if the amount reached 0
1544	*/	1478	*/
1545		1479
		1480	object *
1546	object *decrease_ob_nr (object *op, uint32 i)	1481	decrease_ob_nr (object *op, uint32 i)
1547	{	1482	{
1548	object *tmp;	1483	object *tmp;
1549	player *pl;
1550		1484
1551	if (i == 0) /* objects with op->nrof require this check */	1485	if (i == 0) /* objects with op->nrof require this check */
1552	return op;	1486	return op;
1553		1487
1554	if (i > op->nrof)	1488	if (i > op->nrof)
1555	i = op->nrof;	1489	i = op->nrof;
1556		1490
1557	if (QUERY_FLAG (op, FLAG_REMOVED))	1491	if (QUERY_FLAG (op, FLAG_REMOVED))
		1492	op->nrof -= i;
		1493	else if (op->env)
		1494	{
		1495	/* is this object in the players inventory, or sub container
		1496	* therein?
		1497	*/
		1498	tmp = op->in_player ();
		1499	/* nope. Is this a container the player has opened?
		1500	* If so, set tmp to that player.
		1501	* IMO, searching through all the players will mostly
		1502	* likely be quicker than following op->env to the map,
		1503	* and then searching the map for a player.
		1504	*/
		1505	if (!tmp)
		1506	for_all_players (pl)
		1507	if (pl->ob->container == op->env)
		1508	{
		1509	tmp = pl->ob;
		1510	break;
		1511	}
		1512
		1513	if (i < op->nrof)
		1514	{
		1515	sub_weight (op->env, op->weight * i);
		1516	op->nrof -= i;
		1517	if (tmp)
		1518	esrv_send_item (tmp, op);
		1519	}
		1520	else
		1521	{
		1522	op->remove ();
		1523	op->nrof = 0;
		1524	if (tmp)
		1525	esrv_del_item (tmp->contr, op->count);
		1526	}
1558	{	1527	}
		1528	else
		1529	{
		1530	object *above = op->above;
		1531
		1532	if (i < op->nrof)
1559	op->nrof -= i;	1533	op->nrof -= i;
1560	}	1534	else
1561	else if (op->env != NULL)
1562	{
1563	/* is this object in the players inventory, or sub container
1564	* therein?
1565	*/
1566	tmp = is_player_inv (op->env);
1567	/* nope. Is this a container the player has opened?
1568	* If so, set tmp to that player.
1569	* IMO, searching through all the players will mostly
1570	* likely be quicker than following op->env to the map,
1571	* and then searching the map for a player.
1572	*/
1573	if (!tmp) {
1574	for (pl=first_player; pl; pl=pl->next)
1575	if (pl->ob->container == op->env) break;
1576	if (pl) tmp=pl->ob;
1577	else tmp=NULL;
1578	}	1535	{
1579
1580	if (i < op->nrof) {
1581	sub_weight (op->env, op->weight * i);
1582	op->nrof -= i;
1583	if (tmp) {
1584	esrv_send_item(tmp, op);
1585	}
1586	} else {
1587	remove_ob (op);	1536	op->remove ();
1588	op->nrof = 0;	1537	op->nrof = 0;
1589	if (tmp) {
1590	esrv_del_item(tmp->contr, op->count);
1591	}	1538	}
1592	}
1593	}
1594	else
1595	{
1596	object *above = op->above;
1597		1539
1598	if (i < op->nrof) {
1599	op->nrof -= i;
1600	} else {
1601	remove_ob (op);
1602	op->nrof = 0;
1603	}
1604	/* Since we just removed op, op->above is null */	1540	/* Since we just removed op, op->above is null */
1605	for (tmp = above; tmp != NULL; tmp = tmp->above)	1541	for (tmp = above; tmp; tmp = tmp->above)
1606	if (tmp->type == PLAYER) {	1542	if (tmp->type == PLAYER)
		1543	{
1607	if (op->nrof)	1544	if (op->nrof)
1608	esrv_send_item(tmp, op);	1545	esrv_send_item (tmp, op);
1609	else	1546	else
1610	esrv_del_item(tmp->contr, op->count);	1547	esrv_del_item (tmp->contr, op->count);
1611	}	1548	}
1612	}	1549	}
1613		1550
1614	if (op->nrof) {	1551	if (op->nrof)
1615	return op;	1552	return op;
1616	} else {	1553	else
1617	free_object (op);	1554	{
		1555	op->destroy ();
1618	return NULL;	1556	return 0;
1619	}	1557	}
1620	}	1558	}
1621		1559
1622	/*	1560	/*
1623	* add_weight(object, weight) adds the specified weight to an object,	1561	* add_weight(object, weight) adds the specified weight to an object,
1624	* and also updates how much the environment(s) is/are carrying.	1562	* and also updates how much the environment(s) is/are carrying.
1625	*/	1563	*/
1626		1564
		1565	void
1627	void add_weight (object *op, signed long weight) {	1566	add_weight (object *op, signed long weight)
		1567	{
1628	while (op!=NULL) {	1568	while (op != NULL)
		1569	{
1629	if (op->type == CONTAINER) {	1570	if (op->type == CONTAINER)
1630	weight=(signed long)(weight*(100-op->stats.Str)/100);	1571	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1631	}	1572
1632	op->carrying+=weight;	1573	op->carrying += weight;
1633	op=op->env;	1574	op = op->env;
1634	}	1575	}
1635	}	1576	}
1636		1577
		1578	object *
		1579	insert_ob_in_ob (object *op, object *where)
		1580	{
		1581	if (!where)
		1582	{
		1583	char *dump = dump_object (op);
		1584	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1585	free (dump);
		1586	return op;
		1587	}
		1588
		1589	if (where->head)
		1590	{
		1591	LOG (llevDebug, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1592	where = where->head;
		1593	}
		1594
		1595	return where->insert (op);
		1596	}
		1597
1637	/*	1598	/*
1638	* insert_ob_in_ob(op,environment):	1599	* env->insert (op)
1639	* This function inserts the object op in the linked list	1600	* This function inserts the object op in the linked list
1640	* inside the object environment.	1601	* inside the object environment.
1641	*	1602	*
1642	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1643	* the inventory at the last position or next to other objects of the same
1644	* type.
1645	* Frank: Now sorted by type, archetype and magic!
1646	*
1647	* The function returns now pointer to inserted item, and return value can	1603	* The function returns now pointer to inserted item, and return value can
1648	* be != op, if items are merged. -Tero	1604	* be != op, if items are merged. -Tero
1649	*/	1605	*/
1650		1606
1651	object *insert_ob_in_ob(object *op,object *where) {	1607	object *
		1608	object::insert (object *op)
		1609	{
1652	object *tmp, *otmp;	1610	object *tmp, *otmp;
1653		1611
1654	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1612	if (!QUERY_FLAG (op, FLAG_REMOVED))
1655	dump_object(op);	1613	op->remove ();
1656	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1614
1657	return op;
1658	}
1659	if(where==NULL) {
1660	dump_object(op);
1661	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1662	return op;
1663	}
1664	if (where->head) {
1665	LOG(llevDebug,
1666	"Warning: Tried to insert object wrong part of multipart object.\n");
1667	where = where->head;
1668	}
1669	if (op->more) {	1615	if (op->more)
		1616	{
1670	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1617	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1671	&op->name, op->count);
1672	return op;	1618	return op;
1673	}	1619	}
		1620
1674	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1621	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1675	CLEAR_FLAG(op, FLAG_REMOVED);	1622	CLEAR_FLAG (op, FLAG_REMOVED);
1676	if(op->nrof) {	1623	if (op->nrof)
		1624	{
1677	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1625	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1678	if ( CAN_MERGE(tmp,op) ) {	1626	if (object::can_merge (tmp, op))
		1627	{
1679	/* return the original object and remove inserted object	1628	/* return the original object and remove inserted object
1680	(client needs the original object) */	1629	(client needs the original object) */
1681	tmp->nrof += op->nrof;	1630	tmp->nrof += op->nrof;
1682	/* Weight handling gets pretty funky. Since we are adding to	1631	/* Weight handling gets pretty funky. Since we are adding to
1683	* tmp->nrof, we need to increase the weight.	1632	* tmp->nrof, we need to increase the weight.
1684	*/	1633	*/
1685	add_weight (where, op->weight*op->nrof);	1634	add_weight (this, op->weight * op->nrof);
1686	SET_FLAG(op, FLAG_REMOVED);	1635	SET_FLAG (op, FLAG_REMOVED);
1687	free_object(op); /* free the inserted object */	1636	op->destroy (); /* free the inserted object */
1688	op = tmp;	1637	op = tmp;
1689	remove_ob (op); /* and fix old object's links */	1638	op->remove (); /* and fix old object's links */
1690	CLEAR_FLAG(op, FLAG_REMOVED);	1639	CLEAR_FLAG (op, FLAG_REMOVED);
1691	break;	1640	break;
1692	}	1641	}
1693		1642
1694	/* I assume combined objects have no inventory	1643	/* I assume combined objects have no inventory
1695	* We add the weight - this object could have just been removed	1644	* We add the weight - this object could have just been removed
1696	* (if it was possible to merge). calling remove_ob will subtract	1645	* (if it was possible to merge). calling remove_ob will subtract
1697	* the weight, so we need to add it in again, since we actually do	1646	* the weight, so we need to add it in again, since we actually do
1698	* the linking below	1647	* the linking below
1699	*/	1648	*/
1700	add_weight (where, op->weight*op->nrof);	1649	add_weight (this, op->weight * op->nrof);
		1650	}
1701	} else	1651	else
1702	add_weight (where, (op->weight+op->carrying));	1652	add_weight (this, (op->weight + op->carrying));
1703		1653
1704	otmp=is_player_inv(where);	1654	otmp = this->in_player ();
1705	if (otmp&&otmp->contr!=NULL) {	1655	if (otmp && otmp->contr)
1706	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1656	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1707	fix_player(otmp);	1657	otmp->update_stats ();
1708	}
1709		1658
1710	op->map=NULL;	1659	op->map = 0;
1711	op->env=where;	1660	op->env = this;
1712	op->above=NULL;	1661	op->above = 0;
1713	op->below=NULL;	1662	op->below = 0;
1714	op->x=0,op->y=0;	1663	op->x = 0, op->y = 0;
1715		1664
1716	/* reset the light list and los of the players on the map */	1665	/* reset the light list and los of the players on the map */
1717	if((op->glow_radius!=0)&&where->map)	1666	if ((op->glow_radius != 0) && map)
1718	{	1667	{
1719	#ifdef DEBUG_LIGHTS	1668	#ifdef DEBUG_LIGHTS
1720	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1669	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1721	op->name);
1722	#endif /* DEBUG_LIGHTS */	1670	#endif /* DEBUG_LIGHTS */
1723	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1671	if (map->darkness)
		1672	update_all_los (map, x, y);
1724	}	1673	}
1725		1674
1726	/* Client has no idea of ordering so lets not bother ordering it here.	1675	/* Client has no idea of ordering so lets not bother ordering it here.
1727	* It sure simplifies this function...	1676	* It sure simplifies this function...
1728	*/	1677	*/
1729	if (where->inv==NULL)	1678	if (!inv)
1730	where->inv=op;	1679	inv = op;
1731	else {	1680	else
		1681	{
1732	op->below = where->inv;	1682	op->below = inv;
1733	op->below->above = op;	1683	op->below->above = op;
1734	where->inv = op;	1684	inv = op;
1735	}	1685	}
		1686
		1687	INVOKE_OBJECT (INSERT, this);
		1688
1736	return op;	1689	return op;
1737	}	1690	}
1738		1691
1739	/*	1692	/*
1740	* Checks if any objects has a move_type that matches objects	1693	* Checks if any objects has a move_type that matches objects
…		…
1754	*	1707	*
1755	* MSW 2001-07-08: Check all objects on space, not just those below	1708	* MSW 2001-07-08: Check all objects on space, not just those below
1756	* object being inserted. insert_ob_in_map may not put new objects	1709	* object being inserted. insert_ob_in_map may not put new objects
1757	* on top.	1710	* on top.
1758	*/	1711	*/
1759		1712	int
1760	int check_move_on (object *op, object *originator)	1713	check_move_on (object *op, object *originator)
1761	{	1714	{
1762	object *tmp;	1715	object *tmp;
1763	tag_t tag;
1764	mapstruct *m=op->map;	1716	maptile *m = op->map;
1765	int x=op->x, y=op->y;	1717	int x = op->x, y = op->y;
		1718
1766	MoveType move_on, move_slow, move_block;	1719	MoveType move_on, move_slow, move_block;
1767		1720
1768	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1721	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1769	return 0;	1722	return 0;
1770		1723
1771	tag = op->count;
1772
1773	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1724	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1774	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1725	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1775	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1726	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1776		1727
1777	/* if nothing on this space will slow op down or be applied,	1728	/* if nothing on this space will slow op down or be applied,
1778	* no need to do checking below. have to make sure move_type	1729	* no need to do checking below. have to make sure move_type
1779	* is set, as lots of objects don't have it set - we treat that	1730	* is set, as lots of objects don't have it set - we treat that
1780	* as walking.	1731	* as walking.
1781	*/	1732	*/
1782	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1733	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1783	return 0;	1734	return 0;
1784		1735
1785	/* This is basically inverse logic of that below - basically,	1736	/* This is basically inverse logic of that below - basically,
1786	* if the object can avoid the move on or slow move, they do so,	1737	* if the object can avoid the move on or slow move, they do so,
1787	* but can't do it if the alternate movement they are using is	1738	* but can't do it if the alternate movement they are using is
1788	* blocked. Logic on this seems confusing, but does seem correct.	1739	* blocked. Logic on this seems confusing, but does seem correct.
1789	*/	1740	*/
1790	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1741	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1791	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1742	return 0;
1792		1743
1793	/* The objects have to be checked from top to bottom.	1744	/* The objects have to be checked from top to bottom.
1794	* Hence, we first go to the top:	1745	* Hence, we first go to the top:
1795	*/	1746	*/
1796		1747
1797	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1748	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1798	tmp->above!=NULL; tmp=tmp->above) {	1749	{
1799	/* Trim the search when we find the first other spell effect	1750	/* Trim the search when we find the first other spell effect
1800	* this helps performance so that if a space has 50 spell objects,	1751	* this helps performance so that if a space has 50 spell objects,
1801	* we don't need to check all of them.	1752	* we don't need to check all of them.
1802	*/	1753	*/
1803	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1754	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1755	break;
		1756	}
		1757
		1758	for (; tmp; tmp = tmp->below)
1804	}	1759	{
1805	for(;tmp!=NULL; tmp=tmp->below) {	1760	if (tmp == op)
1806	if (tmp == op) continue; /* Can't apply yourself */	1761	continue; /* Can't apply yourself */
1807		1762
1808	/* Check to see if one of the movement types should be slowed down.	1763	/* Check to see if one of the movement types should be slowed down.
1809	* Second check makes sure that the movement types not being slowed	1764	* Second check makes sure that the movement types not being slowed
1810	* (~slow_move) is not blocked on this space - just because the	1765	* (~slow_move) is not blocked on this space - just because the
1811	* space doesn't slow down swimming (for example), if you can't actually	1766	* space doesn't slow down swimming (for example), if you can't actually
1812	* swim on that space, can't use it to avoid the penalty.	1767	* swim on that space, can't use it to avoid the penalty.
1813	*/	1768	*/
1814	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1769	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1770	{
1815	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1771	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1816	((op->move_type & tmp->move_slow) &&
1817	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1772	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1773	{
1818		1774
1819	float diff;	1775	float
1820
1821	diff = tmp->move_slow_penalty*FABS(op->speed);	1776	diff = tmp->move_slow_penalty * FABS (op->speed);
		1777
1822	if (op->type == PLAYER) {	1778	if (op->type == PLAYER)
1823	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1779	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1824	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1780	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1825	diff /= 4.0;	1781	diff /= 4.0;
1826	}	1782
1827	}
1828	op->speed_left -= diff;	1783	op->speed_left -= diff;
1829	}	1784	}
1830	}	1785	}
1831		1786
1832	/* Basically same logic as above, except now for actual apply. */	1787	/* Basically same logic as above, except now for actual apply. */
1833	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1788	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1834	((op->move_type & tmp->move_on) &&
1835	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1789	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1836		1790	{
1837	move_apply(tmp, op, originator);	1791	move_apply (tmp, op, originator);
		1792
1838	if (was_destroyed (op, tag))	1793	if (op->destroyed ())
1839	return 1;	1794	return 1;
1840		1795
1841	/* what the person/creature stepped onto has moved the object	1796	/* what the person/creature stepped onto has moved the object
1842	* someplace new. Don't process any further - if we did,	1797	* someplace new. Don't process any further - if we did,
1843	* have a feeling strange problems would result.	1798	* have a feeling strange problems would result.
1844	*/	1799	*/
1845	if (op->map != m || op->x != x || op->y != y) return 0;	1800	if (op->map != m || op->x != x || op->y != y)
		1801	return 0;
1846	}	1802	}
1847	}	1803	}
		1804
1848	return 0;	1805	return 0;
1849	}	1806	}
1850		1807
1851	/*	1808	/*
1852	* present_arch(arch, map, x, y) searches for any objects with	1809	* present_arch(arch, map, x, y) searches for any objects with
1853	* a matching archetype at the given map and coordinates.	1810	* a matching archetype at the given map and coordinates.
1854	* The first matching object is returned, or NULL if none.	1811	* The first matching object is returned, or NULL if none.
1855	*/	1812	*/
1856		1813	object *
1857	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1814	present_arch (const archetype *at, maptile *m, int x, int y)
1858	object *tmp;	1815	{
1859	if(m==NULL || out_of_map(m,x,y)) {	1816	if (!m || out_of_map (m, x, y))
		1817	{
1860	LOG(llevError,"Present_arch called outside map.\n");	1818	LOG (llevError, "Present_arch called outside map.\n");
1861	return NULL;	1819	return NULL;
1862	}	1820	}
1863	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1821
		1822	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1864	if(tmp->arch == at)	1823	if (tmp->arch == at)
1865	return tmp;	1824	return tmp;
		1825
1866	return NULL;	1826	return NULL;
1867	}	1827	}
1868		1828
1869	/*	1829	/*
1870	* present(type, map, x, y) searches for any objects with	1830	* present(type, map, x, y) searches for any objects with
1871	* a matching type variable at the given map and coordinates.	1831	* a matching type variable at the given map and coordinates.
1872	* The first matching object is returned, or NULL if none.	1832	* The first matching object is returned, or NULL if none.
1873	*/	1833	*/
1874		1834	object *
1875	object *present(unsigned char type,mapstruct *m, int x,int y) {	1835	present (unsigned char type, maptile *m, int x, int y)
1876	object *tmp;	1836	{
1877	if(out_of_map(m,x,y)) {	1837	if (out_of_map (m, x, y))
		1838	{
1878	LOG(llevError,"Present called outside map.\n");	1839	LOG (llevError, "Present called outside map.\n");
1879	return NULL;	1840	return NULL;
1880	}	1841	}
1881	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1842
		1843	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1882	if(tmp->type==type)	1844	if (tmp->type == type)
1883	return tmp;	1845	return tmp;
		1846
1884	return NULL;	1847	return NULL;
1885	}	1848	}
1886		1849
1887	/*	1850	/*
1888	* present_in_ob(type, object) searches for any objects with	1851	* present_in_ob(type, object) searches for any objects with
1889	* a matching type variable in the inventory of the given object.	1852	* a matching type variable in the inventory of the given object.
1890	* The first matching object is returned, or NULL if none.	1853	* The first matching object is returned, or NULL if none.
1891	*/	1854	*/
1892		1855	object *
1893	object *present_in_ob(unsigned char type, const object *op) {	1856	present_in_ob (unsigned char type, const object *op)
1894	object *tmp;	1857	{
1895	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1858	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1896	if(tmp->type==type)	1859	if (tmp->type == type)
1897	return tmp;	1860	return tmp;
		1861
1898	return NULL;	1862	return NULL;
1899	}	1863	}
1900		1864
1901	/*	1865	/*
1902	* present_in_ob (type, str, object) searches for any objects with	1866	* present_in_ob (type, str, object) searches for any objects with
…		…
1910	* str is the string to match against. Note that we match against	1874	* str is the string to match against. Note that we match against
1911	* the object name, not the archetype name. this is so that the	1875	* the object name, not the archetype name. this is so that the
1912	* spell code can use one object type (force), but change it's name	1876	* spell code can use one object type (force), but change it's name
1913	* to be unique.	1877	* to be unique.
1914	*/	1878	*/
1915		1879	object *
1916	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1880	present_in_ob_by_name (int type, const char *str, const object *op)
1917	object *tmp;	1881	{
1918
1919	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1882	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1920	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1883	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1921	return tmp;	1884	return tmp;
1922	}	1885
1923	return NULL;	1886	return 0;
1924	}	1887	}
1925		1888
1926	/*	1889	/*
1927	* present_arch_in_ob(archetype, object) searches for any objects with	1890	* present_arch_in_ob(archetype, object) searches for any objects with
1928	* a matching archetype in the inventory of the given object.	1891	* a matching archetype in the inventory of the given object.
1929	* The first matching object is returned, or NULL if none.	1892	* The first matching object is returned, or NULL if none.
1930	*/	1893	*/
1931		1894	object *
1932	object *present_arch_in_ob(const archetype *at, const object *op) {	1895	present_arch_in_ob (const archetype *at, const object *op)
1933	object *tmp;	1896	{
1934	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1897	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1935	if( tmp->arch == at)	1898	if (tmp->arch == at)
1936	return tmp;	1899	return tmp;
		1900
1937	return NULL;	1901	return NULL;
1938	}	1902	}
1939		1903
1940	/*	1904	/*
1941	* activate recursively a flag on an object inventory	1905	* activate recursively a flag on an object inventory
1942	*/	1906	*/
		1907	void
1943	void flag_inv(object*op, int flag){	1908	flag_inv (object *op, int flag)
1944	object *tmp;	1909	{
1945	if(op->inv)	1910	if (op->inv)
1946	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1911	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1912	{
1947	SET_FLAG(tmp, flag);	1913	SET_FLAG (tmp, flag);
1948	flag_inv(tmp,flag);	1914	flag_inv (tmp, flag);
1949	}	1915	}
		1916	}
		1917
1950	}/*	1918	/*
1951	* desactivate recursively a flag on an object inventory	1919	* deactivate recursively a flag on an object inventory
1952	*/	1920	*/
		1921	void
1953	void unflag_inv(object*op, int flag){	1922	unflag_inv (object *op, int flag)
1954	object *tmp;	1923	{
1955	if(op->inv)	1924	if (op->inv)
1956	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1925	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1926	{
1957	CLEAR_FLAG(tmp, flag);	1927	CLEAR_FLAG (tmp, flag);
1958	unflag_inv(tmp,flag);	1928	unflag_inv (tmp, flag);
1959	}	1929	}
1960	}	1930	}
1961		1931
1962	/*	1932	/*
1963	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in	1933	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1964	* all it's inventory (recursively).	1934	* all it's inventory (recursively).
1965	* If checksums are used, a player will get set_cheat called for	1935	* If checksums are used, a player will get set_cheat called for
1966	* him/her-self and all object carried by a call to this function.	1936	* him/her-self and all object carried by a call to this function.
1967	*/	1937	*/
1968		1938	void
1969	void set_cheat(object *op) {	1939	set_cheat (object *op)
		1940	{
1970	SET_FLAG(op, FLAG_WAS_WIZ);	1941	SET_FLAG (op, FLAG_WAS_WIZ);
1971	flag_inv(op, FLAG_WAS_WIZ);	1942	flag_inv (op, FLAG_WAS_WIZ);
1972	}	1943	}
1973		1944
1974	/*	1945	/*
1975	* find_free_spot(object, map, x, y, start, stop) will search for	1946	* find_free_spot(object, map, x, y, start, stop) will search for
1976	* a spot at the given map and coordinates which will be able to contain	1947	* a spot at the given map and coordinates which will be able to contain
…		…
1990	* because arch_blocked (now ob_blocked) needs to know the movement type	1961	* because arch_blocked (now ob_blocked) needs to know the movement type
1991	* to know if the space in question will block the object. We can't use	1962	* to know if the space in question will block the object. We can't use
1992	* the archetype because that isn't correct if the monster has been	1963	* the archetype because that isn't correct if the monster has been
1993	* customized, changed states, etc.	1964	* customized, changed states, etc.
1994	*/	1965	*/
1995		1966	int
1996	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1967	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1968	{
1997	int i,index=0, flag;	1969	int index = 0, flag;
1998	static int altern[SIZEOFFREE];	1970	int altern[SIZEOFFREE];
1999		1971
2000	for(i=start;i<stop;i++) {	1972	for (int i = start; i < stop; i++)
		1973	{
2001	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1974	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2002	if(!flag)	1975	if (!flag)
2003	altern[index++]=i;	1976	altern [index++] = i;
2004		1977
2005	/* Basically, if we find a wall on a space, we cut down the search size.	1978	/* Basically, if we find a wall on a space, we cut down the search size.
2006	* In this way, we won't return spaces that are on another side of a wall.	1979	* In this way, we won't return spaces that are on another side of a wall.
2007	* This mostly work, but it cuts down the search size in all directions -	1980	* This mostly work, but it cuts down the search size in all directions -
2008	* if the space being examined only has a wall to the north and empty	1981	* if the space being examined only has a wall to the north and empty
2009	* spaces in all the other directions, this will reduce the search space	1982	* spaces in all the other directions, this will reduce the search space
2010	* to only the spaces immediately surrounding the target area, and	1983	* to only the spaces immediately surrounding the target area, and
2011	* won't look 2 spaces south of the target space.	1984	* won't look 2 spaces south of the target space.
2012	*/	1985	*/
2013	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1986	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2014	stop=maxfree[i];	1987	stop = maxfree[i];
2015	}	1988	}
2016	if(!index) return -1;	1989
		1990	if (!index)
		1991	return -1;
		1992
2017	return altern[RANDOM()%index];	1993	return altern[RANDOM () % index];
2018	}	1994	}
2019		1995
2020	/*	1996	/*
2021	* find_first_free_spot(archetype, mapstruct, x, y) works like	1997	* find_first_free_spot(archetype, maptile, x, y) works like
2022	* find_free_spot(), but it will search max number of squares.	1998	* find_free_spot(), but it will search max number of squares.
2023	* But it will return the first available spot, not a random choice.	1999	* But it will return the first available spot, not a random choice.
2024	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2000	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2025	*/	2001	*/
2026		2002	int
2027	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2003	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2028	int i;	2004	{
2029	for(i=0;i<SIZEOFFREE;i++) {	2005	for (int i = 0; i < SIZEOFFREE; i++)
2030	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2006	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2031	return i;	2007	return i;
2032	}	2008
2033	return -1;	2009	return -1;
2034	}	2010	}
2035		2011
2036	/*	2012	/*
2037	* The function permute(arr, begin, end) randomly reorders the array	2013	* The function permute(arr, begin, end) randomly reorders the array
2038	* arr[begin..end-1].	2014	* arr[begin..end-1].
		2015	* now uses a fisher-yates shuffle, old permute was broken
2039	*/	2016	*/
		2017	static void
2040	static void permute(int *arr, int begin, int end)	2018	permute (int *arr, int begin, int end)
2041	{	2019	{
2042	int i, j, tmp, len;	2020	arr += begin;
		2021	end -= begin;
2043		2022
2044	len = end-begin;	2023	while (--end)
2045	for(i = begin; i < end; i++)	2024	swap (arr [end], arr [RANDOM () % (end + 1)]);
2046	{
2047	j = begin+RANDOM()%len;
2048
2049	tmp = arr[i];
2050	arr[i] = arr[j];
2051	arr[j] = tmp;
2052	}
2053	}	2025	}
2054		2026
2055	/* new function to make monster searching more efficient, and effective!	2027	/* new function to make monster searching more efficient, and effective!
2056	* This basically returns a randomized array (in the passed pointer) of	2028	* This basically returns a randomized array (in the passed pointer) of
2057	* the spaces to find monsters. In this way, it won't always look for	2029	* the spaces to find monsters. In this way, it won't always look for
2058	* monsters to the north first. However, the size of the array passed	2030	* monsters to the north first. However, the size of the array passed
2059	* covers all the spaces, so within that size, all the spaces within	2031	* covers all the spaces, so within that size, all the spaces within
2060	* the 3x3 area will be searched, just not in a predictable order.	2032	* the 3x3 area will be searched, just not in a predictable order.
2061	*/	2033	*/
		2034	void
2062	void get_search_arr(int *search_arr)	2035	get_search_arr (int *search_arr)
2063	{	2036	{
2064	int i;	2037	int i;
2065		2038
2066	for(i = 0; i < SIZEOFFREE; i++)	2039	for (i = 0; i < SIZEOFFREE; i++)
2067	{
2068	search_arr[i] = i;	2040	search_arr[i] = i;
2069	}
2070		2041
2071	permute(search_arr, 1, SIZEOFFREE1+1);	2042	permute (search_arr, 1, SIZEOFFREE1 + 1);
2072	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2043	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2073	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2044	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2074	}	2045	}
2075		2046
2076	/*	2047	/*
2077	* find_dir(map, x, y, exclude) will search some close squares in the	2048	* find_dir(map, x, y, exclude) will search some close squares in the
2078	* given map at the given coordinates for live objects.	2049	* given map at the given coordinates for live objects.
…		…
2083	* Perhaps incorrectly, but I'm making the assumption that exclude	2054	* Perhaps incorrectly, but I'm making the assumption that exclude
2084	* is actually want is going to try and move there. We need this info	2055	* is actually want is going to try and move there. We need this info
2085	* because we have to know what movement the thing looking to move	2056	* because we have to know what movement the thing looking to move
2086	* there is capable of.	2057	* there is capable of.
2087	*/	2058	*/
2088		2059	int
2089	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2060	find_dir (maptile *m, int x, int y, object *exclude)
		2061	{
2090	int i,max=SIZEOFFREE, mflags;	2062	int i, max = SIZEOFFREE, mflags;
		2063
2091	sint16 nx, ny;	2064	sint16 nx, ny;
2092	object *tmp;	2065	object *tmp;
2093	mapstruct *mp;	2066	maptile *mp;
		2067
2094	MoveType blocked, move_type;	2068	MoveType blocked, move_type;
2095		2069
2096	if (exclude && exclude->head) {	2070	if (exclude && exclude->head)
		2071	{
2097	exclude = exclude->head;	2072	exclude = exclude->head;
2098	move_type = exclude->move_type;	2073	move_type = exclude->move_type;
2099	} else {	2074	}
		2075	else
		2076	{
2100	/* If we don't have anything, presume it can use all movement types. */	2077	/* If we don't have anything, presume it can use all movement types. */
2101	move_type=MOVE_ALL;	2078	move_type = MOVE_ALL;
		2079	}
		2080
		2081	for (i = 1; i < max; i++)
2102	}	2082	{
2103
2104	for(i=1;i<max;i++) {
2105	mp = m;	2083	mp = m;
2106	nx = x + freearr_x[i];	2084	nx = x + freearr_x[i];
2107	ny = y + freearr_y[i];	2085	ny = y + freearr_y[i];
2108		2086
2109	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2087	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2088
2110	if (mflags & P_OUT_OF_MAP) {	2089	if (mflags & P_OUT_OF_MAP)
		2090	max = maxfree[i];
		2091	else
		2092	{
		2093	mapspace &ms = mp->at (nx, ny);
		2094
		2095	blocked = ms.move_block;
		2096
		2097	if ((move_type & blocked) == move_type)
2111	max = maxfree[i];	2098	max = maxfree[i];
2112	} else {
2113	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2114
2115	if ((move_type & blocked) == move_type) {
2116	max=maxfree[i];
2117	} else if (mflags & P_IS_ALIVE) {	2099	else if (mflags & P_IS_ALIVE)
2118	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2100	{
		2101	for (tmp = ms.bot; tmp; tmp = tmp->above)
2119	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2102	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2120	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2103	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2121	break;	2104	break;
2122	}	2105
2123	}
2124	if(tmp) {	2106	if (tmp)
2125	return freedir[i];	2107	return freedir[i];
2126	}
2127	}	2108	}
2128	}	2109	}
2129	}	2110	}
		2111
2130	return 0;	2112	return 0;
2131	}	2113	}
2132		2114
2133	/*	2115	/*
2134	* distance(object 1, object 2) will return the square of the	2116	* distance(object 1, object 2) will return the square of the
2135	* distance between the two given objects.	2117	* distance between the two given objects.
2136	*/	2118	*/
2137		2119	int
2138	int distance(const object *ob1, const object *ob2) {	2120	distance (const object *ob1, const object *ob2)
2139	int i;	2121	{
2140	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2122	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2141	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2142	return i;
2143	}	2123	}
2144		2124
2145	/*	2125	/*
2146	* find_dir_2(delta-x,delta-y) will return a direction in which	2126	* find_dir_2(delta-x,delta-y) will return a direction in which
2147	* an object which has subtracted the x and y coordinates of another	2127	* an object which has subtracted the x and y coordinates of another
2148	* object, needs to travel toward it.	2128	* object, needs to travel toward it.
2149	*/	2129	*/
2150		2130	int
2151	int find_dir_2(int x, int y) {	2131	find_dir_2 (int x, int y)
		2132	{
2152	int q;	2133	int q;
2153		2134
2154	if(y)	2135	if (y)
2155	q=x*100/y;	2136	q = x * 100 / y;
2156	else if (x)	2137	else if (x)
2157	q= -300*x;	2138	q = -300 * x;
2158	else	2139	else
2159	return 0;	2140	return 0;
2160		2141
2161	if(y>0) {	2142	if (y > 0)
		2143	{
2162	if(q < -242)	2144	if (q < -242)
2163	return 3 ;	2145	return 3;
2164	if (q < -41)	2146	if (q < -41)
2165	return 2 ;	2147	return 2;
2166	if (q < 41)	2148	if (q < 41)
2167	return 1 ;	2149	return 1;
2168	if (q < 242)	2150	if (q < 242)
2169	return 8 ;	2151	return 8;
2170	return 7 ;	2152	return 7;
2171	}	2153	}
2172		2154
2173	if (q < -242)	2155	if (q < -242)
2174	return 7 ;	2156	return 7;
2175	if (q < -41)	2157	if (q < -41)
2176	return 6 ;	2158	return 6;
2177	if (q < 41)	2159	if (q < 41)
2178	return 5 ;	2160	return 5;
2179	if (q < 242)	2161	if (q < 242)
2180	return 4 ;	2162	return 4;
2181		2163
2182	return 3 ;	2164	return 3;
2183	}	2165	}
2184		2166
2185	/*	2167	/*
2186	* absdir(int): Returns a number between 1 and 8, which represent	2168	* absdir(int): Returns a number between 1 and 8, which represent
2187	* the "absolute" direction of a number (it actually takes care of	2169	* the "absolute" direction of a number (it actually takes care of
2188	* "overflow" in previous calculations of a direction).	2170	* "overflow" in previous calculations of a direction).
2189	*/	2171	*/
2190		2172
		2173	int
2191	int absdir(int d) {	2174	absdir (int d)
2192	while(d<1) d+=8;	2175	{
2193	while(d>8) d-=8;	2176	while (d < 1)
		2177	d += 8;
		2178
		2179	while (d > 8)
		2180	d -= 8;
		2181
2194	return d;	2182	return d;
2195	}	2183	}
2196		2184
2197	/*	2185	/*
2198	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2186	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2199	* between two directions (which are expected to be absolute (see absdir())	2187	* between two directions (which are expected to be absolute (see absdir())
2200	*/	2188	*/
2201		2189
		2190	int
2202	int dirdiff(int dir1, int dir2) {	2191	dirdiff (int dir1, int dir2)
		2192	{
2203	int d;	2193	int d;
		2194
2204	d = abs(dir1 - dir2);	2195	d = abs (dir1 - dir2);
2205	if(d>4)	2196	if (d > 4)
2206	d = 8 - d;	2197	d = 8 - d;
		2198
2207	return d;	2199	return d;
2208	}	2200	}
2209		2201
2210	/* peterm:	2202	/* peterm:
2211	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2203	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2214	* This basically means that if direction is 15, then it could either go	2206	* This basically means that if direction is 15, then it could either go
2215	* direction 4, 14, or 16 to get back to where we are.	2207	* direction 4, 14, or 16 to get back to where we are.
2216	* Moved from spell_util.c to object.c with the other related direction	2208	* Moved from spell_util.c to object.c with the other related direction
2217	* functions.	2209	* functions.
2218	*/	2210	*/
2219
2220	int reduction_dir[SIZEOFFREE][3] = {	2211	int reduction_dir[SIZEOFFREE][3] = {
2221	{0,0,0}, /* 0 */	2212	{0, 0, 0}, /* 0 */
2222	{0,0,0}, /* 1 */	2213	{0, 0, 0}, /* 1 */
2223	{0,0,0}, /* 2 */	2214	{0, 0, 0}, /* 2 */
2224	{0,0,0}, /* 3 */	2215	{0, 0, 0}, /* 3 */
2225	{0,0,0}, /* 4 */	2216	{0, 0, 0}, /* 4 */
2226	{0,0,0}, /* 5 */	2217	{0, 0, 0}, /* 5 */
2227	{0,0,0}, /* 6 */	2218	{0, 0, 0}, /* 6 */
2228	{0,0,0}, /* 7 */	2219	{0, 0, 0}, /* 7 */
2229	{0,0,0}, /* 8 */	2220	{0, 0, 0}, /* 8 */
2230	{8,1,2}, /* 9 */	2221	{8, 1, 2}, /* 9 */
2231	{1,2,-1}, /* 10 */	2222	{1, 2, -1}, /* 10 */
2232	{2,10,12}, /* 11 */	2223	{2, 10, 12}, /* 11 */
2233	{2,3,-1}, /* 12 */	2224	{2, 3, -1}, /* 12 */
2234	{2,3,4}, /* 13 */	2225	{2, 3, 4}, /* 13 */
2235	{3,4,-1}, /* 14 */	2226	{3, 4, -1}, /* 14 */
2236	{4,14,16}, /* 15 */	2227	{4, 14, 16}, /* 15 */
2237	{5,4,-1}, /* 16 */	2228	{5, 4, -1}, /* 16 */
2238	{4,5,6}, /* 17 */	2229	{4, 5, 6}, /* 17 */
2239	{6,5,-1}, /* 18 */	2230	{6, 5, -1}, /* 18 */
2240	{6,20,18}, /* 19 */	2231	{6, 20, 18}, /* 19 */
2241	{7,6,-1}, /* 20 */	2232	{7, 6, -1}, /* 20 */
2242	{6,7,8}, /* 21 */	2233	{6, 7, 8}, /* 21 */
2243	{7,8,-1}, /* 22 */	2234	{7, 8, -1}, /* 22 */
2244	{8,22,24}, /* 23 */	2235	{8, 22, 24}, /* 23 */
2245	{8,1,-1}, /* 24 */	2236	{8, 1, -1}, /* 24 */
2246	{24,9,10}, /* 25 */	2237	{24, 9, 10}, /* 25 */
2247	{9,10,-1}, /* 26 */	2238	{9, 10, -1}, /* 26 */
2248	{10,11,-1}, /* 27 */	2239	{10, 11, -1}, /* 27 */
2249	{27,11,29}, /* 28 */	2240	{27, 11, 29}, /* 28 */
2250	{11,12,-1}, /* 29 */	2241	{11, 12, -1}, /* 29 */
2251	{12,13,-1}, /* 30 */	2242	{12, 13, -1}, /* 30 */
2252	{12,13,14}, /* 31 */	2243	{12, 13, 14}, /* 31 */
2253	{13,14,-1}, /* 32 */	2244	{13, 14, -1}, /* 32 */
2254	{14,15,-1}, /* 33 */	2245	{14, 15, -1}, /* 33 */
2255	{33,15,35}, /* 34 */	2246	{33, 15, 35}, /* 34 */
2256	{16,15,-1}, /* 35 */	2247	{16, 15, -1}, /* 35 */
2257	{17,16,-1}, /* 36 */	2248	{17, 16, -1}, /* 36 */
2258	{18,17,16}, /* 37 */	2249	{18, 17, 16}, /* 37 */
2259	{18,17,-1}, /* 38 */	2250	{18, 17, -1}, /* 38 */
2260	{18,19,-1}, /* 39 */	2251	{18, 19, -1}, /* 39 */
2261	{41,19,39}, /* 40 */	2252	{41, 19, 39}, /* 40 */
2262	{19,20,-1}, /* 41 */	2253	{19, 20, -1}, /* 41 */
2263	{20,21,-1}, /* 42 */	2254	{20, 21, -1}, /* 42 */
2264	{20,21,22}, /* 43 */	2255	{20, 21, 22}, /* 43 */
2265	{21,22,-1}, /* 44 */	2256	{21, 22, -1}, /* 44 */
2266	{23,22,-1}, /* 45 */	2257	{23, 22, -1}, /* 45 */
2267	{45,47,23}, /* 46 */	2258	{45, 47, 23}, /* 46 */
2268	{23,24,-1}, /* 47 */	2259	{23, 24, -1}, /* 47 */
2269	{24,9,-1}}; /* 48 */	2260	{24, 9, -1}
		2261	}; /* 48 */
2270		2262
2271	/* Recursive routine to step back and see if we can	2263	/* Recursive routine to step back and see if we can
2272	* find a path to that monster that we found. If not,	2264	* find a path to that monster that we found. If not,
2273	* we don't bother going toward it. Returns 1 if we	2265	* we don't bother going toward it. Returns 1 if we
2274	* can see a direct way to get it	2266	* can see a direct way to get it
2275	* Modified to be map tile aware -.MSW	2267	* Modified to be map tile aware -.MSW
2276	*/	2268	*/
2277		2269	int
2278
2279	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2270	can_see_monsterP (maptile *m, int x, int y, int dir)
		2271	{
2280	sint16 dx, dy;	2272	sint16 dx, dy;
2281	int mflags;	2273	int mflags;
2282		2274
		2275	if (dir < 0)
2283	if(dir<0) return 0; /* exit condition: invalid direction */	2276	return 0; /* exit condition: invalid direction */
2284		2277
2285	dx = x + freearr_x[dir];	2278	dx = x + freearr_x[dir];
2286	dy = y + freearr_y[dir];	2279	dy = y + freearr_y[dir];
2287		2280
2288	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2281	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2289		2282
2290	/* This functional arguably was incorrect before - it was	2283	/* This functional arguably was incorrect before - it was
2291	* checking for P_WALL - that was basically seeing if	2284	* checking for P_WALL - that was basically seeing if
2292	* we could move to the monster - this is being more	2285	* we could move to the monster - this is being more
2293	* literal on if we can see it. To know if we can actually	2286	* literal on if we can see it. To know if we can actually
2294	* move to the monster, we'd need the monster passed in or	2287	* move to the monster, we'd need the monster passed in or
2295	* at least its move type.	2288	* at least its move type.
2296	*/	2289	*/
2297	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2290	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2291	return 0;
2298		2292
2299	/* yes, can see. */	2293	/* yes, can see. */
2300	if(dir < 9) return 1;	2294	if (dir < 9)
		2295	return 1;
		2296
2301	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2297	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2302	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2298	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2303	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2299	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2304	}	2300	}
2305		2301
2306
2307
2308	/*	2302	/*
2309	* can_pick(picker, item): finds out if an object is possible to be	2303	* can_pick(picker, item): finds out if an object is possible to be
2310	* picked up by the picker. Returnes 1 if it can be	2304	* picked up by the picker. Returnes 1 if it can be
2311	* picked up, otherwise 0.	2305	* picked up, otherwise 0.
2312	*	2306	*
…		…
2314	* core dumps if they do.	2308	* core dumps if they do.
2315	*	2309	*
2316	* Add a check so we can't pick up invisible objects (0.93.8)	2310	* Add a check so we can't pick up invisible objects (0.93.8)
2317	*/	2311	*/
2318		2312
		2313	int
2319	int can_pick(const object *who, const object *item) {	2314	can_pick (const object *who, const object *item)
		2315	{
2320	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2316	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2321	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2317	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2322	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2318	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2323	(who->type==PLAYER||item->weight<who->weight/3));
2324	}	2319	}
2325
2326		2320
2327	/*	2321	/*
2328	* create clone from object to another	2322	* create clone from object to another
2329	*/	2323	*/
		2324	object *
2330	object *object_create_clone (object *asrc) {	2325	object_create_clone (object *asrc)
		2326	{
2331	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2327	object *dst = 0, *tmp, *src, *part, *prev, *item;
2332		2328
2333	if(!asrc) return NULL;	2329	if (!asrc)
		2330	return 0;
		2331
2334	src = asrc;	2332	src = asrc;
2335	if(src->head)	2333	if (src->head)
2336	src = src->head;	2334	src = src->head;
2337		2335
2338	prev = NULL;	2336	prev = 0;
2339	for(part = src; part; part = part->more) {	2337	for (part = src; part; part = part->more)
2340	tmp = get_object();	2338	{
2341	copy_object(part,tmp);	2339	tmp = part->clone ();
2342	tmp->x -= src->x;	2340	tmp->x -= src->x;
2343	tmp->y -= src->y;	2341	tmp->y -= src->y;
		2342
2344	if(!part->head) {	2343	if (!part->head)
		2344	{
2345	dst = tmp;	2345	dst = tmp;
2346	tmp->head = NULL;	2346	tmp->head = 0;
		2347	}
2347	} else {	2348	else
2348	tmp->head = dst;	2349	tmp->head = dst;
2349	}	2350
2350	tmp->more = NULL;	2351	tmp->more = 0;
		2352
2351	if(prev)	2353	if (prev)
2352	prev->more = tmp;	2354	prev->more = tmp;
		2355
2353	prev = tmp;	2356	prev = tmp;
2354	}	2357	}
2355	/*** copy inventory ***/	2358
2356	for(item = src->inv; item; item = item->below) {	2359	for (item = src->inv; item; item = item->below)
2357	(void) insert_ob_in_ob(object_create_clone(item),dst);	2360	insert_ob_in_ob (object_create_clone (item), dst);
2358	}
2359		2361
2360	return dst;	2362	return dst;
2361	}
2362
2363	/* return true if the object was destroyed, 0 otherwise */
2364	int was_destroyed (const object *op, tag_t old_tag)
2365	{
2366	/* checking for FLAG_FREED isn't necessary, but makes this function more
2367	* robust */
2368	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2369	}	2363	}
2370		2364
2371	/* GROS - Creates an object using a string representing its content. */	2365	/* GROS - Creates an object using a string representing its content. */
2372	/* Basically, we save the content of the string to a temp file, then call */	2366	/* Basically, we save the content of the string to a temp file, then call */
2373	/* load_object on it. I admit it is a highly inefficient way to make things, */	2367	/* load_object on it. I admit it is a highly inefficient way to make things, */
2374	/* but it was simple to make and allows reusing the load_object function. */	2368	/* but it was simple to make and allows reusing the load_object function. */
2375	/* Remember not to use load_object_str in a time-critical situation. */	2369	/* Remember not to use load_object_str in a time-critical situation. */
2376	/* Also remember that multiparts objects are not supported for now. */	2370	/* Also remember that multiparts objects are not supported for now. */
2377		2371	object *
2378	object* load_object_str(const char *obstr)	2372	load_object_str (const char *obstr)
2379	{	2373	{
2380	object *op;	2374	object *op;
2381	char filename[MAX_BUF];	2375	char filename[MAX_BUF];
		2376
2382	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2377	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2383		2378
2384	FILE *tempfile=fopen(filename,"w");	2379	FILE *tempfile = fopen (filename, "w");
		2380
2385	if (tempfile == NULL)	2381	if (tempfile == NULL)
2386	{	2382	{
2387	LOG(llevError,"Error - Unable to access load object temp file\n");	2383	LOG (llevError, "Error - Unable to access load object temp file\n");
2388	return NULL;	2384	return NULL;
2389	};	2385	}
		2386
2390	fprintf(tempfile,obstr);	2387	fprintf (tempfile, obstr);
2391	fclose(tempfile);	2388	fclose (tempfile);
2392		2389
2393	op=get_object();	2390	op = object::create ();
2394		2391
2395	object_thawer thawer (filename);	2392	object_thawer thawer (filename);
2396		2393
2397	if (thawer)	2394	if (thawer)
2398	load_object(thawer,op,0);	2395	load_object (thawer, op, 0);
2399		2396
2400	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2397	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2401	CLEAR_FLAG(op,FLAG_REMOVED);	2398	CLEAR_FLAG (op, FLAG_REMOVED);
2402		2399
2403	return op;	2400	return op;
2404	}	2401	}
2405		2402
2406	/* This returns the first object in who's inventory that	2403	/* This returns the first object in who's inventory that
2407	* has the same type and subtype match.	2404	* has the same type and subtype match.
2408	* returns NULL if no match.	2405	* returns NULL if no match.
2409	*/	2406	*/
		2407	object *
2410	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2408	find_obj_by_type_subtype (const object *who, int type, int subtype)
2411	{	2409	{
2412	object *tmp;
2413
2414	for (tmp=who->inv; tmp; tmp=tmp->below)	2410	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2415	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2411	if (tmp->type == type && tmp->subtype == subtype)
		2412	return tmp;
2416		2413
2417	return NULL;	2414	return 0;
2418	}	2415	}
2419		2416
2420	/* If ob has a field named key, return the link from the list,	2417	/* If ob has a field named key, return the link from the list,
2421	* otherwise return NULL.	2418	* otherwise return NULL.
2422	*	2419	*
2423	* key must be a passed in shared string - otherwise, this won't	2420	* key must be a passed in shared string - otherwise, this won't
2424	* do the desired thing.	2421	* do the desired thing.
2425	*/	2422	*/
		2423	key_value *
2426	key_value * get_ob_key_link(const object * ob, const char * key) {	2424	get_ob_key_link (const object *ob, const char *key)
2427	key_value * link;	2425	{
2428
2429	for (link = ob->key_values; link != NULL; link = link->next) {	2426	for (key_value *link = ob->key_values; link; link = link->next)
2430	if (link->key == key) {	2427	if (link->key == key)
2431	return link;	2428	return link;
2432	}	2429
2433	}	2430	return 0;
2434		2431	}
2435	return NULL;
2436	}
2437		2432
2438	/*	2433	/*
2439	* Returns the value of op has an extra_field for key, or NULL.	2434	* Returns the value of op has an extra_field for key, or NULL.
2440	*	2435	*
2441	* The argument doesn't need to be a shared string.	2436	* The argument doesn't need to be a shared string.
2442	*	2437	*
2443	* The returned string is shared.	2438	* The returned string is shared.
2444	*/	2439	*/
		2440	const char *
2445	const char * get_ob_key_value(const object * op, const char * const key) {	2441	get_ob_key_value (const object *op, const char *const key)
		2442	{
2446	key_value * link;	2443	key_value *link;
2447	const char * canonical_key;	2444	shstr_cmp canonical_key (key);
		2445
		2446	if (!canonical_key)
2448		2447	{
2449	canonical_key = shstr::find (key);
2450
2451	if (canonical_key == NULL) {
2452	/* 1. There being a field named key on any object	2448	/* 1. There being a field named key on any object
2453	* implies there'd be a shared string to find.	2449	* implies there'd be a shared string to find.
2454	* 2. Since there isn't, no object has this field.	2450	* 2. Since there isn't, no object has this field.
2455	* 3. Therefore, *this* object doesn't have this field.	2451	* 3. Therefore, *this* object doesn't have this field.
2456	*/	2452	*/
2457	return NULL;	2453	return 0;
2458	}	2454	}
2459		2455
2460	/* This is copied from get_ob_key_link() above -	2456	/* This is copied from get_ob_key_link() above -
2461	* only 4 lines, and saves the function call overhead.	2457	* only 4 lines, and saves the function call overhead.
2462	*/	2458	*/
2463	for (link = op->key_values; link != NULL; link = link->next) {	2459	for (link = op->key_values; link; link = link->next)
2464	if (link->key == canonical_key) {	2460	if (link->key == canonical_key)
2465	return link->value;	2461	return link->value;
2466	}	2462
2467	}	2463	return 0;
2468	return NULL;
2469	}	2464	}
2470		2465
2471		2466
2472	/*	2467	/*
2473	* Updates the canonical_key in op to value.	2468	* Updates the canonical_key in op to value.
…		…
2477	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2472	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2478	* keys.	2473	* keys.
2479	*	2474	*
2480	* Returns TRUE on success.	2475	* Returns TRUE on success.
2481	*/	2476	*/
		2477	int
2482	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2478	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2479	{
2483	key_value * field = NULL, *last=NULL;	2480	key_value *field = NULL, *last = NULL;
2484		2481
2485	for (field=op->key_values; field != NULL; field=field->next) {	2482	for (field = op->key_values; field != NULL; field = field->next)
		2483	{
2486	if (field->key != canonical_key) {	2484	if (field->key != canonical_key)
		2485	{
2487	last = field;	2486	last = field;
2488	continue;	2487	continue;
2489	}	2488	}
2490		2489
2491	if (value)	2490	if (value)
2492	field->value = value;	2491	field->value = value;
2493	else {	2492	else
		2493	{
2494	/* Basically, if the archetype has this key set,	2494	/* Basically, if the archetype has this key set,
2495	* we need to store the null value so when we save	2495	* we need to store the null value so when we save
2496	* it, we save the empty value so that when we load,	2496	* it, we save the empty value so that when we load,
2497	* we get this value back again.	2497	* we get this value back again.
2498	*/	2498	*/
2499	if (get_ob_key_link (&op->arch->clone, canonical_key))	2499	if (get_ob_key_link (&op->arch->clone, canonical_key))
2500	field->value = 0;	2500	field->value = 0;
		2501	else
		2502	{
		2503	if (last)
		2504	last->next = field->next;
2501	else	2505	else
2502	{
2503	if (last) last->next = field->next;
2504	else op->key_values = field->next;	2506	op->key_values = field->next;
2505		2507
2506	delete field;	2508	delete field;
2507	}	2509	}
2508	}	2510	}
2509	return TRUE;	2511	return TRUE;
2510	}	2512	}
2511	/* IF we get here, key doesn't exist */	2513	/* IF we get here, key doesn't exist */
2512		2514
2513	/* No field, we'll have to add it. */	2515	/* No field, we'll have to add it. */
2514		2516
2515	if (!add_key) {	2517	if (!add_key)
2516	return FALSE;	2518	return FALSE;
2517	}	2519
2518	/* There isn't any good reason to store a null	2520	/* There isn't any good reason to store a null
2519	* value in the key/value list. If the archetype has	2521	* value in the key/value list. If the archetype has
2520	* this key, then we should also have it, so shouldn't	2522	* this key, then we should also have it, so shouldn't
2521	* be here. If user wants to store empty strings,	2523	* be here. If user wants to store empty strings,
2522	* should pass in ""	2524	* should pass in ""
2523	*/	2525	*/
2524	if (value == NULL) return TRUE;	2526	if (value == NULL)
2525
2526	field = new key_value;
2527
2528	field->key = canonical_key;
2529	field->value = value;
2530	/* Usual prepend-addition. */
2531	field->next = op->key_values;
2532	op->key_values = field;
2533
2534	return TRUE;	2527	return TRUE;
		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;
2535	}	2538	}
2536		2539
2537	/*	2540	/*
2538	* Updates the key in op to value.	2541	* Updates the key in op to value.
2539	*	2542	*
…		…
2541	* and not add new ones.	2544	* and not add new ones.
2542	* In general, should be little reason FALSE is ever passed in for add_key	2545	* In general, should be little reason FALSE is ever passed in for add_key
2543	*	2546	*
2544	* Returns TRUE on success.	2547	* Returns TRUE on success.
2545	*/	2548	*/
		2549	int
2546	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2550	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2547	{	2551	{
2548	shstr key_ (key);	2552	shstr key_ (key);
		2553
2549	return set_ob_key_value_s (op, key_, value, add_key);	2554	return set_ob_key_value_s (op, key_, value, add_key);
2550	}	2555	}
		2556
		2557	object::depth_iterator::depth_iterator (object *container)
		2558	: iterator_base (container)
		2559	{
		2560	while (item->inv)
		2561	item = item->inv;
		2562	}
		2563
		2564	void
		2565	object::depth_iterator::next ()
		2566	{
		2567	if (item->below)
		2568	{
		2569	item = item->below;
		2570
		2571	while (item->inv)
		2572	item = item->inv;
		2573	}
		2574	else
		2575	item = item->env;
		2576	}
		2577
		2578
		2579	const char *
		2580	object::flag_desc (char *desc, int len) const
		2581	{
		2582	char *p = desc;
		2583	bool first = true;
		2584
		2585	*p = 0;
		2586
		2587	for (int i = 0; i < NUM_FLAGS; i++)
		2588	{
		2589	if (len <= 10) // magic constant!
		2590	{
		2591	snprintf (p, len, ",...");
		2592	break;
		2593	}
		2594
		2595	if (flag [i])
		2596	{
		2597	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2598	len -= cnt;
		2599	p += cnt;
		2600	first = false;
		2601	}
		2602	}
		2603
		2604	return desc;
		2605	}
		2606
		2607	// return a suitable string describing an object in enough detail to find it
		2608	const char *
		2609	object::debug_desc (char *info) const
		2610	{
		2611	char flagdesc[512];
		2612	char info2[256 * 4];
		2613	char *p = info;
		2614
		2615	p += snprintf (p, 512, "{cnt:%d,uuid:<1,%" PRIx64 ">,name:\"%s%s%s\",flags:[%s],type:%d}",
		2616	count, uuid.seq,
		2617	&name,
		2618	title ? "\",title:" : "",
		2619	title ? (const char *)title : "",
		2620	flag_desc (flagdesc, 512), type);
		2621
		2622	if (env)
		2623	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2624
		2625	if (map)
		2626	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2627
		2628	return info;
		2629	}
		2630
		2631	const char *
		2632	object::debug_desc () const
		2633	{
		2634	static char info[256 * 4];
		2635	return debug_desc (info);
		2636	}
		2637
		2638	const char *
		2639	object::debug_desc2 () const
		2640	{
		2641	static char info[256 * 4];
		2642	return debug_desc (info);
		2643	}
		2644

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