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Comparing deliantra/server/common/object.C (file contents):
Revision 1.20 by root, Fri Sep 8 18:26:22 2006 UTC vs.
Revision 1.109 by root, Sun Jan 7 21:54:59 2007 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.20 2006/09/08 18:26:22 root Exp $";
4	*/
5
6	/*	1	/*
7	CrossFire, A Multiplayer game for X-windows	2	CrossFire, A Multiplayer game for X-windows
8		3
		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	};
59		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	}
60		135
61	/* 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
62	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	{
63	key_value * wants_field;	140	key_value *wants_field;
64		141
65	/* 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
66	* 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
67	* different structure or at least keep the lists sorted...	144	* different structure or at least keep the lists sorted...
68	*/	145	*/
69		146
70	/* For each field in wants, */	147	/* For each field in wants, */
71	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	{
72	key_value * has_field;	150	key_value *has_field;
73		151
74	/* Look for a field in has with the same key. */	152	/* Look for a field in has with the same key. */
75	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)
76		156	{
77	if (has_field == NULL) {
78	/* No field with that name. */	157	/* No field with that name. */
79	return FALSE;	158	return FALSE;
80	}
81		159	}
		160
82	/* Found the matching field. */	161	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {	162	if (has_field->value != wants_field->value)
		163	{
84	/* 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. */
85	return FALSE;	165	return FALSE;
86	}	166	}
87		167
88	/* 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. */
89	}
90		169	}
		170
91	/* 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. */
92	return TRUE;	172	return TRUE;
93	}	173	}
94		174
95	/* 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
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	177	compare_ob_value_lists (const object *ob1, const object *ob2)
		178	{
97	/* 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,
98	* so we need to run the comparison *twice*. :(	180	* so we need to run the comparison *twice*. :(
99	*/	181	*/
100	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);
101	}	183	}
102		184
103	/* 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
104	* they can be merged together.	186	* they can be merged together.
105	*	187	*
106	* 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
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	189	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	190	* reduce this to the same efficiency.
109	*	191	*
110	* Check nrof variable *before* calling CAN_MERGE()	192	* Check nrof variable *before* calling can_merge()
111	*	193	*
112	* Improvements made with merge: Better checking on potion, and also	194	* Improvements made with merge: Better checking on potion, and also
113	* check weight	195	* check weight
114	*/	196	*/
115
116	bool
117	object::can_merge (object *ob1, object *ob2)	197	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	198	{
119	/* A couple quicksanity checks */	199	/* A couple quicksanity checks */
120	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)
121	return 0;	205	return 0;
122		206
123	if (ob1->speed != ob2->speed)	207	//TODO: this ain't working well, use nicer and correct overflow check
124	return 0;
125
126	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	208	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
127	* value could not be stored in a sint32 (which unfortunately sometimes is	209	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).	210	* used to store nrof).
129	*/	211	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)	212	if (ob1->nrof + ob2->nrof >= 1UL << 31)
…		…
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	222	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		223
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	224	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	225	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		226
145		227	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
146	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something	228	|| ob1->arch != ob2->arch
147	* being locked in inventory should prevent merging.
148	* 0x4 in flags3 is CLIENT_SENT
149	*/
150	if ((ob1->arch != ob2->arch) ||
151	(ob1->flags[0] != ob2->flags[0]) ||
152	(ob1->flags[1] != ob2->flags[1]) ||
153	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
154	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
155	(ob1->name != ob2->name) ||	229	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	230	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	231	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	232	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||	233	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||	234	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
161	(ob1->attacktype != ob2->attacktype) ||	235	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	236	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	237	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	238	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	239	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	240	|| ob1->animation_id != ob2->animation_id
167	(ob1->client_type != ob2->client_type) ||	241	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	242	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	243	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	244	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	245	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	246	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	247	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	248	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	249	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	250	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	251	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
178	return 0;	252	return 0;
179		253
180	/* This is really a spellbook check - really, we should	254	/* This is really a spellbook check - really, we should
181	* check all objects in the inventory.	255	* check all objects in the inventory.
182	*/	256	*/
183	if (ob1->inv || ob2->inv)	257	if (ob1->inv || ob2->inv)
184	{	258	{
185	/* 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 */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))	260	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;	261	return 0;
188		262
189	/* Now check to see if the two inventory objects could merge */	263	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	264	if (!object::can_merge (ob1->inv, ob2->inv))
191	return 0;	265	return 0;
192		266
193	/* 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
194	* if it is valid.	268	* if it is valid.
195	*/	269	*/
196	}	270	}
…		…
204		278
205	/* 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
206	* 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
207	* check?	281	* check?
208	*/	282	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	283	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	284	return 0;
212		285
213	switch (ob1->type)	286	switch (ob1->type)
214	{	287	{
215	case SCROLL:	288	case SCROLL:
216	if (ob1->level != ob2->level)	289	if (ob1->level != ob2->level)
217	return 0;	290	return 0;
218	break;	291	break;
219	}	292	}
220		293
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	294	if (ob1->key_values != NULL || ob2->key_values != NULL)
222	{	295	{
223	/* At least one of these has key_values. */	296	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	297	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
225	/* One has fields, but the other one doesn't. */	298	/* One has fields, but the other one doesn't. */
226	return 0;	299	return 0;
227	else if (!compare_ob_value_lists (ob1, ob2))	300	else if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	301	return 0;
229	}	302	}
230		303
231	//TODO: generate an event or call into perl for additional checks	304	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	305	if (ob1->self || ob2->self)
233	{	306	{
234	ob1->optimise ();	307	ob1->optimise ();
235	ob2->optimise ();	308	ob2->optimise ();
236		309
237	if (ob1->self || ob2->self)	310	if (ob1->self || ob2->self)
238	return 0;	311	return 0;
239	}	312	}
240		313
241	/* Everything passes, must be OK. */	314	/* Everything passes, must be OK. */
242	return 1;	315	return 1;
243	}	316	}
		317
244	/*	318	/*
245	* sum_weight() is a recursive function which calculates the weight	319	* sum_weight() is a recursive function which calculates the weight
246	* 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
247	* containers are carrying, and sums it up.	321	* containers are carrying, and sums it up.
248	*/	322	*/
249	signed long sum_weight(object *op) {	323	long
		324	sum_weight (object *op)
		325	{
250	signed long sum;	326	long sum;
251	object *inv;	327	object *inv;
		328
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	329	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		330	{
253	if (inv->inv)	331	if (inv->inv)
254	sum_weight(inv);	332	sum_weight (inv);
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	333	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
256	}	334	}
		335
257	if (op->type == CONTAINER && op->stats.Str)	336	if (op->type == CONTAINER && op->stats.Str)
258	sum = (sum * (100 - op->stats.Str))/100;	337	sum = (sum * (100 - op->stats.Str)) / 100;
		338
259	if(op->carrying != sum)	339	if (op->carrying != sum)
260	op->carrying = sum;	340	op->carrying = sum;
		341
261	return sum;	342	return sum;
262	}	343	}
263		344
264	/**	345	/**
265	* Return the outermost environment object for a given object.	346	* Return the outermost environment object for a given object.
266	*/	347	*/
267		348
		349	object *
268	object *object_get_env_recursive (object *op) {	350	object_get_env_recursive (object *op)
		351	{
269	while (op->env != NULL)	352	while (op->env != NULL)
270	op = op->env;	353	op = op->env;
271	return op;	354	return op;
272	}
273
274	/*
275	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
276	* a better check. We basically keeping traversing up until we can't
277	* or find a player.
278	*/
279
280	object *is_player_inv (object *op) {
281	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
282	if (op->env==op)
283	op->env = NULL;
284	return op;
285	}	355	}
286		356
287	/*	357	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	358	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.	359	* Some error messages.
290	* 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.
291	*/	361	*/
292		362
293	void dump_object2(object *op) {	363	char *
294	errmsg[0] = 0;
295	return;
296	//TODO//D#d#
297	#if 0
298	char *cp;
299	/* object *tmp;*/
300
301	if(op->arch!=NULL) {
302	strcat(errmsg,"arch ");
303	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
304	strcat(errmsg,"\n");
305	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	#if 0
308	/* Don't dump player diffs - they are too long, mostly meaningless, and
309	* will overflow the buffer.
310	* Changed so that we don't dump inventory either. This may
311	* also overflow the buffer.
312	*/
313	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	} else {
320	strcat(errmsg,"Object ");
321	if (op->name==NULL) strcat(errmsg, "(null)");
322	else strcat(errmsg,op->name);
323	strcat(errmsg,"\n");
324	#if 0
325	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
326	strcat(errmsg,cp);
327	for (tmp=op->inv; tmp; tmp=tmp->below)
328	dump_object2(tmp);
329	#endif
330	strcat(errmsg,"end\n");
331	}
332	#endif
333	}
334
335	/*
336	* Dumps an object. Returns output in the static global errmsg array.
337	*/
338
339	void dump_object(object *op) {	364	dump_object (object *op)
340	if(op==NULL) {	365	{
341	strcpy(errmsg,"[NULL pointer]");	366	if (!op)
342	return;	367	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		368
348	void dump_all_objects(void) {	369	object_freezer freezer;
349	object *op;	370	save_object (freezer, op, 1);
350	for(op=objects;op!=NULL;op=op->next) {	371	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	372	}
355		373
356	/*	374	/*
357	* 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
358	* multi-object 1 which is closest to the second object.	376	* multi-object 1 which is closest to the second object.
359	* If it's not a multi-object, it is returned.	377	* If it's not a multi-object, it is returned.
360	*/	378	*/
361		379
		380	object *
362	object *get_nearest_part(object *op, const object *pl) {	381	get_nearest_part (object *op, const object *pl)
		382	{
363	object *tmp,*closest;	383	object *tmp, *closest;
364	int last_dist,i;	384	int last_dist, i;
		385
365	if(op->more==NULL)	386	if (op->more == NULL)
366	return op;	387	return op;
367	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)
368	if((i=distance(tmp,pl))<last_dist)	389	if ((i = distance (tmp, pl)) < last_dist)
369	closest=tmp,last_dist=i;	390	closest = tmp, last_dist = i;
370	return closest;	391	return closest;
371	}	392	}
372		393
373	/*	394	/*
374	* 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.
375	*/	396	*/
376		397	object *
377	object *find_object(tag_t i) {	398	find_object (tag_t i)
378	object *op;	399	{
379	for(op=objects;op!=NULL;op=op->next)	400	return ((unsigned int)i) < objects.size ()
380	if(op->count==i)	401	? objects [i]
381	break;	402	: 0;
382	return op;
383	}	403	}
384		404
385	/*	405	/*
386	* Returns the first object which has a name equal to the argument.	406	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	407	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	408	* Enables features like "patch <name-of-other-player> food 999"
389	*/	409	*/
390		410	object *
391	object *find_object_name(const char *str) {	411	find_object_name (const char *str)
392	const char *name = shstr::find (str);	412	{
		413	shstr_cmp str_ (str);
393	object *op;	414	object *op;
394	for(op=objects;op!=NULL;op=op->next)	415
		416	for_all_objects (op)
395	if(&op->name == name)	417	if (op->name == str_)
396	break;	418	break;
397		419
398	return op;	420	return op;
399	}	421	}
400		422
		423	void
401	void free_all_object_data ()	424	free_all_object_data ()
402	{	425	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	426	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
404	}
405
406	/*
407	* Returns the object which this object marks as being the owner.
408	* A id-scheme is used to avoid pointing to objects which have been
409	* freed and are now reused. If this is detected, the owner is
410	* set to NULL, and NULL is returned.
411	* Changed 2004-02-12 - if the player is setting at the play again
412	* prompt, he is removed, and we don't want to treat him as an owner of
413	* anything, so check removed flag. I don't expect that this should break
414	* anything - once an object is removed, it is basically dead anyways.
415	*/
416
417	object *get_owner(object *op) {
418	if(op->owner==NULL)
419	return NULL;
420
421	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
422	op->owner->count==op->ownercount)
423	return op->owner;
424
425	op->owner=NULL;
426	op->ownercount=0;
427	return NULL;
428	}
429
430	void clear_owner(object *op)
431	{
432	if (!op) return;
433
434	if (op->owner && op->ownercount == op->owner->count)
435	op->owner->refcount--;
436
437	op->owner = NULL;
438	op->ownercount = 0;
439	}	427	}
440		428
441	/*	429	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	430	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	431	* skill and experience objects.
444	*/	432	*/
445	void set_owner (object *op, object *owner)	433	void
		434	object::set_owner (object *owner)
446	{	435	{
447	if(owner==NULL||op==NULL)	436	if (!owner)
448	return;	437	return;
449		438
450	/* next line added to allow objects which own objects */	439	/* next line added to allow objects which own objects */
451	/* Add a check for ownercounts in here, as I got into an endless loop	440	/* Add a check for ownercounts in here, as I got into an endless loop
452	* with the fireball owning a poison cloud which then owned the	441	* with the fireball owning a poison cloud which then owned the
453	* fireball. I believe that was caused by one of the objects getting	442	* fireball. I believe that was caused by one of the objects getting
454	* freed and then another object replacing it. Since the ownercounts	443	* freed and then another object replacing it. Since the ownercounts
455	* didn't match, this check is valid and I believe that cause is valid.	444	* didn't match, this check is valid and I believe that cause is valid.
456	*/	445	*/
457	while (owner->owner && owner!=owner->owner &&	446	while (owner->owner)
458	owner->ownercount==owner->owner->count) owner=owner->owner;	447	owner = owner->owner;
459		448
460	/* IF the owner still has an owner, we did not resolve to a final owner.
461	* so lets not add to that.
462	*/
463	if (owner->owner) return;
464
465	op->owner=owner;	449	this->owner = owner;
466
467	op->ownercount=owner->count;
468	owner->refcount++;
469
470	}
471
472	/* Set the owner to clone's current owner and set the skill and experience
473	* objects to clone's objects (typically those objects that where the owner's
474	* current skill and experience objects at the time when clone's owner was
475	* set - not the owner's current skill and experience objects).
476	*
477	* Use this function if player created an object (e.g. fire bullet, swarm
478	* spell), and this object creates further objects whose kills should be
479	* accounted for the player's original skill, even if player has changed
480	* skills meanwhile.
481	*/
482	void copy_owner (object *op, object *clone)
483	{
484	object *owner = get_owner (clone);
485	if (owner == NULL) {
486	/* players don't have owners - they own themselves. Update
487	* as appropriate.
488	*/
489	if (clone->type == PLAYER) owner=clone;
490	else return;
491	}
492	set_owner(op, owner);
493
494	}	450	}
495		451
496	/* Zero the key_values on op, decrementing the shared-string	452	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	453	* refcounts and freeing the links.
498	*/	454	*/
		455	static void
499	static void free_key_values(object * op)	456	free_key_values (object *op)
500	{	457	{
501	for (key_value *i = op->key_values; i != 0; )	458	for (key_value *i = op->key_values; i != 0;)
502	{	459	{
503	key_value *next = i->next;	460	key_value *next = i->next;
504	delete i;	461	delete i;
		462
505	i = next;	463	i = next;
506	}	464	}
507		465
508	op->key_values = 0;	466	op->key_values = 0;
509	}	467	}
510		468
511	void object::clear ()
512	{
513	attachable_base::clear ();
514
515	free_key_values (this);
516
517	name = 0;
518	name_pl = 0;
519	title = 0;
520	race = 0;
521	slaying = 0;
522	skill = 0;
523	msg = 0;
524	lore = 0;
525	custom_name = 0;
526	materialname = 0;
527
528	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
529
530	SET_FLAG (this, FLAG_REMOVED);
531	}
532
533	void object::clone (object *destination)
534	{
535	*(object_copy *)destination = *(object_copy *)this;
536	*(object_pod *)destination = *(object_pod *)this;
537
538	if (self || cb)
539	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
540	}
541
542	/*	469	/*
543	* clear_object() frees everything allocated by an object, and also
544	* clears all variables and flags to default settings.
545	*/
546
547	void clear_object (object *op)
548	{
549	op->clear ();
550
551	op->contr = NULL;
552	op->below = NULL;
553	op->above = NULL;
554	op->inv = NULL;
555	op->container=NULL;
556	op->env=NULL;
557	op->more=NULL;
558	op->head=NULL;
559	op->map=NULL;
560	op->refcount=0;
561	op->active_next = NULL;
562	op->active_prev = NULL;
563	/* What is not cleared is next, prev, and count */
564
565	op->expmul = 1.0;
566	op->face = blank_face;
567	op->attacked_by_count = -1;
568
569	if (settings.casting_time)
570	op->casting_time = -1;
571	}
572
573	/*
574	* copy object first frees everything allocated by the second object,	470	* copy_to first frees everything allocated by the dst object,
575	* and then copies the contends of the first object into the second	471	* and then copies the contents of itself into the second
576	* object, allocating what needs to be allocated. Basically, any	472	* object, allocating what needs to be allocated. Basically, any
577	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	473	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
578	* if the first object is freed, the pointers in the new object	474	* if the first object is freed, the pointers in the new object
579	* will point at garbage.	475	* will point at garbage.
580	*/	476	*/
581		477	void
582	void copy_object (object *op2, object *op)	478	object::copy_to (object *dst)
583	{	479	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	480	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	481	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
586		482
587	op2->clone (op);	483	*(object_copy *)dst = *this;
588		484
589	if (is_freed) SET_FLAG (op, FLAG_FREED);	485	if (is_freed)
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	486	SET_FLAG (dst, FLAG_FREED);
591		487
		488	if (is_removed)
		489	SET_FLAG (dst, FLAG_REMOVED);
		490
592	if (op2->speed < 0)	491	if (speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	492	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
594		493
595	/* Copy over key_values, if any. */	494	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	495	if (key_values)
597	{	496	{
598	key_value *tail = NULL;	497	key_value *tail = 0;
599	key_value *i;	498	key_value *i;
600		499
601	op->key_values = NULL;	500	dst->key_values = 0;
602		501
603	for (i = op2->key_values; i != NULL; i = i->next)	502	for (i = key_values; i; i = i->next)
604	{	503	{
605	key_value *new_link = new key_value;	504	key_value *new_link = new key_value;
606		505
607	new_link->next = NULL;	506	new_link->next = 0;
608	new_link->key = i->key;	507	new_link->key = i->key;
609	new_link->value = i->value;	508	new_link->value = i->value;
610		509
611	/* Try and be clever here, too. */	510	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	511	if (!dst->key_values)
613	{	512	{
614	op->key_values = new_link;	513	dst->key_values = new_link;
615	tail = new_link;	514	tail = new_link;
616	}	515	}
617	else	516	else
618	{	517	{
619	tail->next = new_link;	518	tail->next = new_link;
620	tail = new_link;	519	tail = new_link;
621	}	520	}
622	}	521	}
623	}	522	}
624		523
625	update_ob_speed (op);	524	dst->set_speed (dst->speed);
626	}	525	}
627		526
		527	object *
628	object::object ()	528	object::clone ()
629	{	529	{
630	count = ++ob_count;	530	object *neu = create ();
631		531	copy_to (neu);
632	next = objects;	532	return neu;
633
634	if (objects)
635	objects->prev = this;
636
637	objects = this;
638
639	SET_FLAG (this, FLAG_REMOVED);
640
641	expmul = 1.0;
642	face = blank_face;
643	attacked_by_count = -1;
644	}
645
646	object::~object ()
647	{
648	}	533	}
649		534
650	/*	535	/*
651	* If an object with the IS_TURNABLE() flag needs to be turned due	536	* If an object with the IS_TURNABLE() flag needs to be turned due
652	* to the closest player being on the other side, this function can	537	* to the closest player being on the other side, this function can
653	* be called to update the face variable, _and_ how it looks on the map.	538	* be called to update the face variable, _and_ how it looks on the map.
654	*/	539	*/
655		540	void
656	void update_turn_face(object *op) {	541	update_turn_face (object *op)
		542	{
657	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	543	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
658	return;	544	return;
		545
659	SET_ANIMATION(op, op->direction);	546	SET_ANIMATION (op, op->direction);
660	update_object(op,UP_OBJ_FACE);	547	update_object (op, UP_OBJ_FACE);
661	}	548	}
662		549
663	/*	550	/*
664	* Updates the speed of an object. If the speed changes from 0 to another	551	* Updates the speed of an object. If the speed changes from 0 to another
665	* value, or vice versa, then add/remove the object from the active list.	552	* value, or vice versa, then add/remove the object from the active list.
666	* This function needs to be called whenever the speed of an object changes.	553	* This function needs to be called whenever the speed of an object changes.
667	*/	554	*/
668		555	void
669	void update_ob_speed(object *op) {	556	object::set_speed (float speed)
670	extern int arch_init;	557	{
671		558	if (flag [FLAG_FREED] && speed)
672	/* No reason putting the archetypes objects on the speed list,	559	{
673	* since they never really need to be updated.
674	*/
675
676	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
677	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	560	LOG (llevError, "Object %s is freed but has speed.\n", &name);
678	#ifdef MANY_CORES
679	abort();
680	#else
681	op->speed = 0;	561	speed = 0;
682	#endif
683	}	562	}
684	if (arch_init) {
685	return;
686	}
687	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
688	/* If already on active list, don't do anything */
689	if (op->active_next || op->active_prev || op==active_objects)
690	return;
691		563
692	/* process_events() expects us to insert the object at the beginning	564	this->speed = speed;
693	* of the list. */	565
694	op->active_next = active_objects;	566	if (has_active_speed ())
695	if (op->active_next!=NULL)	567	activate ();
696	op->active_next->active_prev = op;
697	active_objects = op;
698	}
699	else {	568	else
700	/* If not on the active list, nothing needs to be done */	569	deactivate ();
701	if (!op->active_next && !op->active_prev && op!=active_objects)
702	return;
703
704	if (op->active_prev==NULL) {
705	active_objects = op->active_next;
706	if (op->active_next!=NULL)
707	op->active_next->active_prev = NULL;
708	}
709	else {
710	op->active_prev->active_next = op->active_next;
711	if (op->active_next)
712	op->active_next->active_prev = op->active_prev;
713	}
714	op->active_next = NULL;
715	op->active_prev = NULL;
716	}
717	}	570	}
718		571
719	/* This function removes object 'op' from the list of active
720	* objects.
721	* This should only be used for style maps or other such
722	* reference maps where you don't want an object that isn't
723	* in play chewing up cpu time getting processed.
724	* The reverse of this is to call update_ob_speed, which
725	* will do the right thing based on the speed of the object.
726	*/
727	void remove_from_active_list(object *op)
728	{
729	/* If not on the active list, nothing needs to be done */
730	if (!op->active_next && !op->active_prev && op!=active_objects)
731	return;
732
733	if (op->active_prev==NULL) {
734	active_objects = op->active_next;
735	if (op->active_next!=NULL)
736	op->active_next->active_prev = NULL;
737	}
738	else {
739	op->active_prev->active_next = op->active_next;
740	if (op->active_next)
741	op->active_next->active_prev = op->active_prev;
742	}
743	op->active_next = NULL;
744	op->active_prev = NULL;
745	}
746
747	/*	572	/*
748	* update_object() updates the array which represents the map.	573	* update_object() updates the the map.
749	* It takes into account invisible objects (and represent squares covered	574	* It takes into account invisible objects (and represent squares covered
750	* by invisible objects by whatever is below them (unless it's another	575	* by invisible objects by whatever is below them (unless it's another
751	* invisible object, etc...)	576	* invisible object, etc...)
752	* If the object being updated is beneath a player, the look-window	577	* If the object being updated is beneath a player, the look-window
753	* of that player is updated (this might be a suboptimal way of	578	* of that player is updated (this might be a suboptimal way of
754	* updating that window, though, since update_object() is called _often_)	579	* updating that window, though, since update_object() is called _often_)
755	*	580	*
756	* action is a hint of what the caller believes need to be done.	581	* action is a hint of what the caller believes need to be done.
757	* For example, if the only thing that has changed is the face (due to
758	* an animation), we don't need to call update_position until that actually
759	* comes into view of a player. OTOH, many other things, like addition/removal
760	* of walls or living creatures may need us to update the flags now.
761	* current action are:	582	* current action are:
762	* UP_OBJ_INSERT: op was inserted	583	* UP_OBJ_INSERT: op was inserted
763	* UP_OBJ_REMOVE: op was removed	584	* UP_OBJ_REMOVE: op was removed
764	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	585	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
765	* as that is easier than trying to look at what may have changed.	586	* as that is easier than trying to look at what may have changed.
766	* UP_OBJ_FACE: only the objects face has changed.	587	* UP_OBJ_FACE: only the objects face has changed.
767	*/	588	*/
768		589	void
769	void update_object(object *op, int action) {	590	update_object (object *op, int action)
770	int update_now=0, flags;	591	{
771	MoveType move_on, move_off, move_block, move_slow;	592	MoveType move_on, move_off, move_block, move_slow;
772		593
773	if (op == NULL) {	594	if (op == NULL)
		595	{
774	/* this should never happen */	596	/* this should never happen */
775	LOG(llevDebug,"update_object() called for NULL object.\n");	597	LOG (llevDebug, "update_object() called for NULL object.\n");
776	return;	598	return;
777	}
778		599	}
779	if(op->env!=NULL) {	600
		601	if (op->env)
		602	{
780	/* Animation is currently handled by client, so nothing	603	/* Animation is currently handled by client, so nothing
781	* to do in this case.	604	* to do in this case.
782	*/	605	*/
783	return;	606	return;
784	}	607	}
785		608
786	/* If the map is saving, don't do anything as everything is	609	/* If the map is saving, don't do anything as everything is
787	* going to get freed anyways.	610	* going to get freed anyways.
788	*/	611	*/
789	if (!op->map || op->map->in_memory == MAP_SAVING) return;	612	if (!op->map || op->map->in_memory == MAP_SAVING)
790		613	return;
		614
791	/* make sure the object is within map boundaries */	615	/* make sure the object is within map boundaries */
792	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	616	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
793	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	617	{
794	LOG(llevError,"update_object() called for object out of map!\n");	618	LOG (llevError, "update_object() called for object out of map!\n");
795	#ifdef MANY_CORES	619	#ifdef MANY_CORES
796	abort();	620	abort ();
797	#endif	621	#endif
798	return;	622	return;
799	}
800		623	}
801	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
802	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
803	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
804	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
805	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
806	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
807		624
		625	mapspace &m = op->ms ();
		626
		627	if (!(m.flags_ & P_UPTODATE))
		628	/* nop */;
808	if (action == UP_OBJ_INSERT) {	629	else if (action == UP_OBJ_INSERT)
		630	{
		631	// this is likely overkill, TODO: revisit (schmorp)
809	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	632	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
810	update_now=1;
811
812	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	633	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
813	update_now=1;	634	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
814		635	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		636	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
815	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	637	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
816	update_now=1;	638	|| (m.move_on | op->move_on ) != m.move_on
817
818	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
819	update_now=1;
820
821	if (op->type == SAFE_GROUND && !(flags & P_SAFE))
822	update_now=1;
823
824	if ((move_on | op->move_on) != move_on) update_now=1;
825
826	if ((move_off | op->move_off) != move_off) update_now=1;	639	|| (m.move_off | op->move_off ) != m.move_off
827		640	|| (m.move_slow | op->move_slow) != m.move_slow
828	/* This isn't perfect, but I don't expect a lot of objects to	641	/* This isn't perfect, but I don't expect a lot of objects to
829	* to have move_allow right now.	642	* to have move_allow right now.
830	*/	643	*/
831	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	644	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
832	update_now=1;	645	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
833		646	m.flags_ = 0;
834	if ((move_slow | op->move_slow) != move_slow)
835	update_now=1;
836	}	647	}
837	/* if the object is being removed, we can't make intelligent	648	/* if the object is being removed, we can't make intelligent
838	* decisions, because remove_ob can't really pass the object	649	* decisions, because remove_ob can't really pass the object
839	* that is being removed.	650	* that is being removed.
840	*/	651	*/
841	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	652	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
842	update_now=1;	653	m.flags_ = 0;
843	} else if (action == UP_OBJ_FACE) {	654	else if (action == UP_OBJ_FACE)
844	/* Nothing to do for that case */	655	/* Nothing to do for that case */ ;
845	}
846	else {	656	else
847	LOG(llevError,"update_object called with invalid action: %d\n", action);	657	LOG (llevError, "update_object called with invalid action: %d\n", action);
848	}
849		658
850	if (update_now) {
851	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
852	update_position(op->map, op->x, op->y);
853	}
854
855	if(op->more!=NULL)	659	if (op->more)
856	update_object(op->more, action);	660	update_object (op->more, action);
857	}	661	}
858		662
		663	object *object::first;
859		664
860	/*	665	object::object ()
861	* free_object() frees everything allocated by an object, removes	666	{
862	* it from the list of used objects, and puts it on the list of	667	SET_FLAG (this, FLAG_REMOVED);
863	* free objects. The IS_FREED() flag is set in the object.	668
864	* The object must have been removed by remove_ob() first for	669	expmul = 1.0;
865	* this function to succeed.	670	face = blank_face;
866	*	671	}
867	* If free_inventory is set, free inventory as well. Else drop items in	672
868	* inventory to the ground.	673	object::~object ()
869	*/	674	{
		675	free_key_values (this);
		676	}
		677
		678	void object::link ()
		679	{
		680	uuid = gen_uuid ();
		681
		682	refcnt_inc ();
		683	objects.insert (this);
		684	}
		685
		686	void object::unlink ()
		687	{
		688	objects.erase (this);
		689	refcnt_dec ();
		690	}
870		691
871	void	692	void
872	free_object (object * ob)	693	object::activate ()
873	{	694	{
874	free_object2 (ob, 0);	695	/* If already on active list, don't do anything */
		696	if (active)
		697	return;
		698
		699	if (has_active_speed ())
		700	actives.insert (this);
875	}	701	}
876		702
877	void	703	void
878	free_object2 (object * ob, int free_inventory)	704	object::activate_recursive ()
879	{	705	{
880	object *tmp, *op;	706	activate ();
881		707
882	if (!QUERY_FLAG (ob, FLAG_REMOVED))	708	for (object *op = inv; op; op = op->below)
883	{	709	op->activate_recursive ();
884	LOG (llevDebug, "Free object called with non removed object\n");	710	}
885	dump_object (ob);
886	#ifdef MANY_CORES
887	abort ();
888	#endif
889	}
890		711
891	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	712	/* This function removes object 'op' from the list of active
892	{	713	* objects.
893	LOG (llevMonster, "Warning: tried to free friendly object.\n");	714	* This should only be used for style maps or other such
894	remove_friendly_object (ob);	715	* reference maps where you don't want an object that isn't
895	}	716	* in play chewing up cpu time getting processed.
896		717	* The reverse of this is to call update_ob_speed, which
897	if (QUERY_FLAG (ob, FLAG_FREED))	718	* will do the right thing based on the speed of the object.
898	{	719	*/
899	dump_object (ob);	720	void
900	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	721	object::deactivate ()
		722	{
		723	/* If not on the active list, nothing needs to be done */
		724	if (!active)
901	return;	725	return;
		726
		727	actives.erase (this);
		728	}
		729
		730	void
		731	object::deactivate_recursive ()
		732	{
		733	for (object *op = inv; op; op = op->below)
		734	op->deactivate_recursive ();
		735
		736	deactivate ();
		737	}
		738
		739	void
		740	object::set_flag_inv (int flag, int value)
		741	{
		742	for (object *op = inv; op; op = op->below)
902	}	743	{
903		744	op->flag [flag] = value;
904	if (ob->more != NULL)	745	op->set_flag_inv (flag, value);
905	{	746	}
906	free_object2 (ob->more, free_inventory);	747	}
907	ob->more = NULL;
908	}
909		748
		749	/*
		750	* Remove and free all objects in the inventory of the given object.
		751	* object.c ?
		752	*/
		753	void
		754	object::destroy_inv (bool drop_to_ground)
		755	{
		756	// need to check first, because the checks below might segfault
		757	// as we might be on an invalid mapspace and crossfire code
		758	// is too buggy to ensure that the inventory is empty.
		759	// corollary: if you create arrows etc. with stuff in tis inventory,
		760	// cf will crash below with off-map x and y
910	if (ob->inv)	761	if (!inv)
911	{	762	return;
		763
912	/* Only if the space blocks everything do we not process -	764	/* Only if the space blocks everything do we not process -
913	* if some form of movement is allowed, let objects	765	* if some form of movement is allowed, let objects
914	* drop on that space.	766	* drop on that space.
915	*/	767	*/
916	if (free_inventory || ob->map == NULL	768	if (!drop_to_ground
		769	|| !map
917	|| ob->map->in_memory != MAP_IN_MEMORY	770	|| map->in_memory != MAP_IN_MEMORY
918	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))	771	|| ms ().move_block == MOVE_ALL)
919	{
920	op = ob->inv;
921
922	while (op != NULL)
923	{	772	{
924	tmp = op->below;	773	while (inv)
925	remove_ob (op);	774	{
926	free_object2 (op, free_inventory);	775	inv->destroy_inv (drop_to_ground);
927	op = tmp;	776	inv->destroy ();
928	}	777	}
929	}
930	else
931	{ /* Put objects in inventory onto this space */
932	op = ob->inv;
933
934	while (op != NULL)
935	{
936	tmp = op->below;
937	remove_ob (op);
938
939	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
940	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
941	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
942	free_object (op);
943	else
944	{
945	op->x = ob->x;
946	op->y = ob->y;
947	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
948	}
949
950	op = tmp;
951	}
952	}
953	}
954
955	/* Remove object from the active list */
956	ob->speed = 0;
957	update_ob_speed (ob);
958
959	SET_FLAG (ob, FLAG_FREED);
960	ob->count = 0;
961
962	/* Remove this object from the list of used objects */
963	if (ob->prev == NULL)
964	{
965	objects = ob->next;
966
967	if (objects != NULL)
968	objects->prev = NULL;
969	}	778	}
970	else	779	else
		780	{ /* Put objects in inventory onto this space */
		781	while (inv)
		782	{
		783	object *op = inv;
		784
		785	if (op->flag [FLAG_STARTEQUIP]
		786	|| op->flag [FLAG_NO_DROP]
		787	|| op->type == RUNE
		788	|| op->type == TRAP
		789	|| op->flag [FLAG_IS_A_TEMPLATE])
		790	op->destroy ();
		791	else
		792	map->insert (op, x, y);
		793	}
		794	}
		795	}
		796
		797	object *object::create ()
		798	{
		799	object *op = new object;
		800	op->link ();
		801	return op;
		802	}
		803
		804	void
		805	object::do_destroy ()
		806	{
		807	if (flag [FLAG_IS_LINKED])
		808	remove_button_link (this);
		809
		810	if (flag [FLAG_FRIENDLY])
		811	remove_friendly_object (this);
		812
		813	if (!flag [FLAG_REMOVED])
		814	remove ();
		815
		816	if (flag [FLAG_FREED])
		817	return;
		818
		819	set_speed (0);
		820
		821	flag [FLAG_FREED] = 1;
		822
		823	attachable::do_destroy ();
		824
		825	destroy_inv (true);
		826	unlink ();
		827
		828	// hack to ensure that freed objects still have a valid map
		829	{
		830	static maptile *freed_map; // freed objects are moved here to avoid crashes
		831
		832	if (!freed_map)
971	{	833	{
972	ob->prev->next = ob->next;	834	freed_map = new maptile;
973		835
974	if (ob->next != NULL)	836	freed_map->name = "/internal/freed_objects_map";
975	ob->next->prev = ob->prev;	837	freed_map->width = 3;
		838	freed_map->height = 3;
		839
		840	freed_map->alloc ();
		841	freed_map->in_memory = MAP_IN_MEMORY;
976	}	842	}
977		843
978	free_key_values (ob);	844	map = freed_map;
		845	x = 1;
		846	y = 1;
		847	}
979		848
980	/* Now link it with the free_objects list: */	849	head = 0;
981	ob->prev = 0;
982	ob->next = 0;
983		850
984	delete ob;	851	if (more)
		852	{
		853	more->destroy ();
		854	more = 0;
		855	}
		856
		857	// clear those pointers that likely might have circular references to us
		858	owner = 0;
		859	enemy = 0;
		860	attacked_by = 0;
		861	}
		862
		863	void
		864	object::destroy (bool destroy_inventory)
		865	{
		866	if (destroyed ())
		867	return;
		868
		869	if (destroy_inventory)
		870	destroy_inv (false);
		871
		872	attachable::destroy ();
985	}	873	}
986		874
987	/*	875	/*
988	* sub_weight() recursively (outwards) subtracts a number from the	876	* sub_weight() recursively (outwards) subtracts a number from the
989	* weight of an object (and what is carried by it's environment(s)).	877	* weight of an object (and what is carried by it's environment(s)).
990	*/	878	*/
991		879	void
992	void sub_weight (object *op, signed long weight) {	880	sub_weight (object *op, signed long weight)
		881	{
993	while (op != NULL) {	882	while (op != NULL)
		883	{
994	if (op->type == CONTAINER) {	884	if (op->type == CONTAINER)
995	weight=(signed long)(weight*(100-op->stats.Str)/100);	885	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
996	}	886
997	op->carrying-=weight;	887	op->carrying -= weight;
998	op = op->env;	888	op = op->env;
999	}	889	}
1000	}	890	}
1001		891
1002	/* remove_ob(op):	892	/* op->remove ():
1003	* This function removes the object op from the linked list of objects	893	* This function removes the object op from the linked list of objects
1004	* which it is currently tied to. When this function is done, the	894	* which it is currently tied to. When this function is done, the
1005	* object will have no environment. If the object previously had an	895	* object will have no environment. If the object previously had an
1006	* environment, the x and y coordinates will be updated to	896	* environment, the x and y coordinates will be updated to
1007	* the previous environment.	897	* the previous environment.
1008	* Beware: This function is called from the editor as well!	898	* Beware: This function is called from the editor as well!
1009	*/	899	*/
1010		900	void
1011	void remove_ob(object *op) {	901	object::remove ()
		902	{
1012	object *tmp,*last=NULL;	903	object *tmp, *last = 0;
1013	object *otmp;	904	object *otmp;
1014	tag_t tag;
1015	int check_walk_off;
1016	mapstruct *m;
1017	sint16 x,y;
1018
1019		905
1020	if(QUERY_FLAG(op,FLAG_REMOVED)) {	906	if (QUERY_FLAG (this, FLAG_REMOVED))
1021	dump_object(op);	907	return;
1022	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1023		908
1024	/* Changed it to always dump core in this case. As has been learned
1025	* in the past, trying to recover from errors almost always
1026	* make things worse, and this is a real error here - something
1027	* that should not happen.
1028	* Yes, if this was a mission critical app, trying to do something
1029	* to recover may make sense, but that is because failure of the app
1030	* may have other disastrous problems. Cf runs out of a script
1031	* so is easily enough restarted without any real problems.
1032	* MSW 2001-07-01
1033	*/
1034	abort();
1035	}
1036	if(op->more!=NULL)
1037	remove_ob(op->more);
1038
1039	SET_FLAG(op, FLAG_REMOVED);	909	SET_FLAG (this, FLAG_REMOVED);
		910	INVOKE_OBJECT (REMOVE, this);
1040		911
		912	if (more)
		913	more->remove ();
		914
1041	/*	915	/*
1042	* In this case, the object to be removed is in someones	916	* In this case, the object to be removed is in someones
1043	* inventory.	917	* inventory.
1044	*/	918	*/
1045	if(op->env!=NULL) {	919	if (env)
		920	{
1046	if(op->nrof)	921	if (nrof)
1047	sub_weight(op->env, op->weight*op->nrof);	922	sub_weight (env, weight * nrof);
1048	else	923	else
1049	sub_weight(op->env, op->weight+op->carrying);	924	sub_weight (env, weight + carrying);
1050		925
1051	/* NO_FIX_PLAYER is set when a great many changes are being	926	/* NO_FIX_PLAYER is set when a great many changes are being
1052	* made to players inventory. If set, avoiding the call	927	* made to players inventory. If set, avoiding the call
1053	* to save cpu time.	928	* to save cpu time.
1054	*/	929	*/
1055	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	930	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1056	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	931	otmp->update_stats ();
1057	fix_player(otmp);
1058		932
1059	if(op->above!=NULL)	933	if (above)
1060	op->above->below=op->below;	934	above->below = below;
1061	else	935	else
1062	op->env->inv=op->below;	936	env->inv = below;
1063		937
1064	if(op->below!=NULL)	938	if (below)
1065	op->below->above=op->above;	939	below->above = above;
1066		940
1067	/* we set up values so that it could be inserted into	941	/* we set up values so that it could be inserted into
1068	* the map, but we don't actually do that - it is up	942	* the map, but we don't actually do that - it is up
1069	* to the caller to decide what we want to do.	943	* to the caller to decide what we want to do.
		944	*/
		945	x = env->x, y = env->y;
		946	map = env->map;
		947	above = 0, below = 0;
		948	env = 0;
		949	}
		950	else if (map)
		951	{
		952	if (type == PLAYER)
		953	{
		954	--map->players;
		955	map->touch ();
		956	}
		957
		958	map->dirty = true;
		959
		960	/* link the object above us */
		961	if (above)
		962	above->below = below;
		963	else
		964	map->at (x, y).top = below; /* we were top, set new top */
		965
		966	/* Relink the object below us, if there is one */
		967	if (below)
		968	below->above = above;
		969	else
		970	{
		971	/* Nothing below, which means we need to relink map object for this space
		972	* use translated coordinates in case some oddness with map tiling is
		973	* evident
1070	*/	974	*/
1071	op->x=op->env->x,op->y=op->env->y;	975	if (GET_MAP_OB (map, x, y) != this)
1072	op->map=op->env->map;	976	{
1073	op->above=NULL,op->below=NULL;	977	char *dump = dump_object (this);
1074	op->env=NULL;	978	LOG (llevError,
		979	"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);
		980	free (dump);
		981	dump = dump_object (GET_MAP_OB (map, x, y));
		982	LOG (llevError, "%s\n", dump);
		983	free (dump);
		984	}
		985
		986	map->at (x, y).bot = above; /* goes on above it. */
		987	}
		988
		989	above = 0;
		990	below = 0;
		991
		992	if (map->in_memory == MAP_SAVING)
1075	return;	993	return;
1076	}
1077		994
1078	/* If we get here, we are removing it from a map */	995	int check_walk_off = !flag [FLAG_NO_APPLY];
1079	if (op->map == NULL) return;
1080		996
1081	x = op->x;	997	for (tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
1082	y = op->y;
1083	m = get_map_from_coord(op->map, &x, &y);
1084
1085	if (!m) {
1086	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1087	op->map->path, op->x, op->y);
1088	/* in old days, we used to set x and y to 0 and continue.
1089	* it seems if we get into this case, something is probablye
1090	* screwed up and should be fixed.
1091	*/
1092	abort();
1093	}
1094	if (op->map != m) {
1095	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1096	op->map->path, m->path, op->x, op->y, x, y);
1097	}
1098
1099	/* Re did the following section of code - it looks like it had
1100	* lots of logic for things we no longer care about
1101	*/
1102
1103	/* link the object above us */
1104	if (op->above)
1105	op->above->below=op->below;
1106	else
1107	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1108
1109	/* Relink the object below us, if there is one */
1110	if(op->below) {
1111	op->below->above=op->above;
1112	} else {
1113	/* Nothing below, which means we need to relink map object for this space
1114	* use translated coordinates in case some oddness with map tiling is
1115	* evident
1116	*/
1117	if(GET_MAP_OB(m,x,y)!=op) {
1118	dump_object(op);
1119	LOG(llevError,"remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom?\n%s\n", errmsg);
1120	dump_object(GET_MAP_OB(m,x,y));
1121	LOG(llevError,"%s\n",errmsg);
1122	}	998	{
1123	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1124	}
1125	op->above=NULL;
1126	op->below=NULL;
1127
1128	if (op->map->in_memory == MAP_SAVING)
1129	return;
1130
1131	tag = op->count;
1132	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1133	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1134	/* No point updating the players look faces if he is the object	999	/* No point updating the players look faces if he is the object
1135	* being removed.	1000	* being removed.
1136	*/	1001	*/
1137		1002
1138	if(tmp->type==PLAYER && tmp!=op) {	1003	if (tmp->type == PLAYER && tmp != this)
		1004	{
1139	/* If a container that the player is currently using somehow gets	1005	/* If a container that the player is currently using somehow gets
1140	* removed (most likely destroyed), update the player view	1006	* removed (most likely destroyed), update the player view
1141	* appropriately.	1007	* appropriately.
1142	*/	1008	*/
1143	if (tmp->container==op) {	1009	if (tmp->container == this)
1144	CLEAR_FLAG(op, FLAG_APPLIED);	1010	{
		1011	flag [FLAG_APPLIED] = 0;
1145	tmp->container=NULL;	1012	tmp->container = 0;
		1013	}
		1014
		1015	if (tmp->contr->ns)
		1016	tmp->contr->ns->floorbox_update ();
1146	}	1017	}
1147	tmp->contr->socket.update_look=1;	1018
1148	}
1149	/* See if player moving off should effect something */	1019	/* See if object moving off should effect something */
1150	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1020	if (check_walk_off
		1021	&& ((move_type & tmp->move_off)
1151	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1022	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
1152		1023	{
1153	move_apply(tmp, op, NULL);	1024	move_apply (tmp, this, 0);
		1025
1154	if (was_destroyed (op, tag)) {	1026	if (destroyed ())
1155	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "	1027	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1156	"leaving object\n", &tmp->name, &tmp->arch->name);
1157	}	1028	}
1158	}
1159		1029
1160	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1030	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1161		1031	//TODO: why is this horrible hacka fix? get rid of this code=bug! (schmorp)
1162	if(tmp->above == tmp)	1032	if (tmp->above == tmp)
1163	tmp->above = NULL;	1033	tmp->above = 0;
		1034
1164	last=tmp;	1035	last = tmp;
1165	}	1036	}
		1037
1166	/* last == NULL of there are no objects on this space */	1038	/* last == NULL if there are no objects on this space */
1167	if (last==NULL) {	1039	//TODO: this makes little sense, why only update the topmost object?
1168	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1040	if (!last)
1169	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1041	map->at (x, y).flags_ = 0;
1170	* those out anyways, and if there are any flags set right now, they won't
1171	* be correct anyways.
1172	*/
1173	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1174	update_position(op->map, op->x, op->y);
1175	}
1176	else	1042	else
1177	update_object(last, UP_OBJ_REMOVE);	1043	update_object (last, UP_OBJ_REMOVE);
1178		1044
1179	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1045	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1180	update_all_los(op->map, op->x, op->y);	1046	update_all_los (map, x, y);
1181		1047	}
1182	}	1048	}
1183		1049
1184	/*	1050	/*
1185	* merge_ob(op,top):	1051	* merge_ob(op,top):
1186	*	1052	*
1187	* This function goes through all objects below and including top, and	1053	* This function goes through all objects below and including top, and
1188	* merges op to the first matching object.	1054	* merges op to the first matching object.
1189	* If top is NULL, it is calculated.	1055	* If top is NULL, it is calculated.
1190	* Returns pointer to object if it succeded in the merge, otherwise NULL	1056	* Returns pointer to object if it succeded in the merge, otherwise NULL
1191	*/	1057	*/
1192		1058	object *
1193	object *merge_ob(object *op, object *top) {	1059	merge_ob (object *op, object *top)
		1060	{
1194	if(!op->nrof)	1061	if (!op->nrof)
1195	return 0;	1062	return 0;
1196	if(top==NULL)	1063
		1064	if (top)
1197	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1065	for (top = op; top && top->above; top = top->above)
		1066	;
		1067
1198	for(;top!=NULL;top=top->below) {	1068	for (; top; top = top->below)
		1069	{
1199	if(top==op)	1070	if (top == op)
1200	continue;	1071	continue;
1201	if (CAN_MERGE(op,top))	1072
1202	{	1073	if (object::can_merge (op, top))
		1074	{
1203	top->nrof+=op->nrof;	1075	top->nrof += op->nrof;
		1076
1204	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1077	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1205	op->weight = 0; /* Don't want any adjustements now */	1078	op->weight = 0; /* Don't want any adjustements now */
1206	remove_ob(op);	1079	op->destroy ();
1207	free_object(op);
1208	return top;	1080	return top;
1209	}	1081	}
1210	}	1082	}
		1083
1211	return NULL;	1084	return 0;
1212	}	1085	}
1213		1086
1214	/*	1087	/*
1215	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1088	* same as insert_ob_in_map except it handle separate coordinates and do a clean
1216	* job preparing multi-part monsters	1089	* job preparing multi-part monsters
1217	*/	1090	*/
		1091	object *
1218	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1092	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1219	object* tmp;	1093	{
1220	if (op->head)	1094	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1221	op=op->head;	1095	{
1222	for (tmp=op;tmp;tmp=tmp->more){
1223	tmp->x=x+tmp->arch->clone.x;	1096	tmp->x = x + tmp->arch->clone.x;
1224	tmp->y=y+tmp->arch->clone.y;	1097	tmp->y = y + tmp->arch->clone.y;
1225	}	1098	}
		1099
1226	return insert_ob_in_map (op, m, originator, flag);	1100	return insert_ob_in_map (op, m, originator, flag);
1227	}	1101	}
1228		1102
1229	/*	1103	/*
1230	* insert_ob_in_map (op, map, originator, flag):	1104	* insert_ob_in_map (op, map, originator, flag):
1231	* This function inserts the object in the two-way linked list	1105	* This function inserts the object in the two-way linked list
…		…
1244	* Return value:	1118	* Return value:
1245	* new object if 'op' was merged with other object	1119	* new object if 'op' was merged with other object
1246	* NULL if 'op' was destroyed	1120	* NULL if 'op' was destroyed
1247	* just 'op' otherwise	1121	* just 'op' otherwise
1248	*/	1122	*/
1249		1123	object *
1250	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1124	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1251	{	1125	{
1252	object *tmp, *top, *floor=NULL;	1126	object *tmp, *top, *floor = NULL;
1253	sint16 x,y;	1127	sint16 x, y;
1254		1128
1255	if (QUERY_FLAG (op, FLAG_FREED)) {	1129	if (QUERY_FLAG (op, FLAG_FREED))
		1130	{
1256	LOG (llevError, "Trying to insert freed object!\n");	1131	LOG (llevError, "Trying to insert freed object!\n");
1257	return NULL;	1132	return NULL;
		1133	}
		1134
		1135	if (!m)
1258	}	1136	{
1259	if(m==NULL) {
1260	dump_object(op);	1137	char *dump = dump_object (op);
1261	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);	1138	LOG (llevError, "Trying to insert in null-map!\n%s\n", dump);
		1139	free (dump);
1262	return op;	1140	return op;
1263	}	1141	}
		1142
1264	if(out_of_map(m,op->x,op->y)) {	1143	if (out_of_map (m, op->x, op->y))
		1144	{
1265	dump_object(op);	1145	char *dump = dump_object (op);
1266	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1146	LOG (llevError, "Trying to insert object outside the map.\n%s\n", dump);
1267	#ifdef MANY_CORES	1147	#ifdef MANY_CORES
1268	/* Better to catch this here, as otherwise the next use of this object	1148	/* Better to catch this here, as otherwise the next use of this object
1269	* is likely to cause a crash. Better to find out where it is getting	1149	* is likely to cause a crash. Better to find out where it is getting
1270	* improperly inserted.	1150	* improperly inserted.
1271	*/	1151	*/
1272	abort();	1152	abort ();
1273	#endif	1153	#endif
		1154	free (dump);
1274	return op;	1155	return op;
1275	}	1156	}
		1157
1276	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1158	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1159	{
1277	dump_object(op);	1160	char *dump = dump_object (op);
1278	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);	1161	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", dump);
		1162	free (dump);
1279	return op;	1163	return op;
		1164	}
		1165
		1166	if (op->more)
1280	}	1167	{
1281	if(op->more!=NULL) {
1282	/* The part may be on a different map. */	1168	/* The part may be on a different map. */
1283		1169
1284	object *more = op->more;	1170	object *more = op->more;
1285		1171
1286	/* We really need the caller to normalize coordinates - if	1172	/* We really need the caller to normalise coordinates - if
1287	* we set the map, that doesn't work if the location is within	1173	* we set the map, that doesn't work if the location is within
1288	* a map and this is straddling an edge. So only if coordinate	1174	* a map and this is straddling an edge. So only if coordinate
1289	* is clear wrong do we normalize it.	1175	* is clear wrong do we normalise it.
1290	*/	1176	*/
1291	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1177	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1292	more->map = get_map_from_coord(m, &more->x, &more->y);	1178	more->map = get_map_from_coord (m, &more->x, &more->y);
1293	} else if (!more->map) {	1179	else if (!more->map)
		1180	{
1294	/* For backwards compatibility - when not dealing with tiled maps,	1181	/* For backwards compatibility - when not dealing with tiled maps,
1295	* more->map should always point to the parent.	1182	* more->map should always point to the parent.
1296	*/	1183	*/
1297	more->map = m;	1184	more->map = m;
1298	}	1185	}
1299		1186
1300	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1187	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1188	{
1301	if ( ! op->head)	1189	if (!op->head)
1302	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1190	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
		1191
1303	return NULL;	1192	return 0;
1304	}	1193	}
1305	}	1194	}
		1195
1306	CLEAR_FLAG(op,FLAG_REMOVED);	1196	CLEAR_FLAG (op, FLAG_REMOVED);
1307		1197
1308	/* Ideally, the caller figures this out. However, it complicates a lot	1198	/* Ideally, the caller figures this out. However, it complicates a lot
1309	* of areas of callers (eg, anything that uses find_free_spot would now	1199	* of areas of callers (eg, anything that uses find_free_spot would now
1310	* need extra work	1200	* need extra work
1311	*/	1201	*/
1312	op->map=get_map_from_coord(m, &op->x, &op->y);	1202	op->map = get_map_from_coord (m, &op->x, &op->y);
1313	x = op->x;	1203	x = op->x;
1314	y = op->y;	1204	y = op->y;
1315		1205
1316	/* this has to be done after we translate the coordinates.	1206	/* this has to be done after we translate the coordinates.
1317	*/	1207	*/
1318	if(op->nrof && !(flag & INS_NO_MERGE)) {	1208	if (op->nrof && !(flag & INS_NO_MERGE))
1319	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1209	for (tmp = GET_MAP_OB (op->map, x, y); tmp; tmp = tmp->above)
1320	if (CAN_MERGE(op,tmp)) {	1210	if (object::can_merge (op, tmp))
		1211	{
1321	op->nrof+=tmp->nrof;	1212	op->nrof += tmp->nrof;
1322	remove_ob(tmp);	1213	tmp->destroy ();
1323	free_object(tmp);	1214	}
		1215
		1216	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1217	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1218
		1219	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1220	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1221
		1222	if (flag & INS_BELOW_ORIGINATOR)
		1223	{
		1224	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1225	{
		1226	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1227	abort ();
		1228	}
		1229
		1230	op->above = originator;
		1231	op->below = originator->below;
		1232
		1233	if (op->below)
		1234	op->below->above = op;
		1235	else
		1236	op->ms ().bot = op;
		1237
		1238	/* since *below* originator, no need to update top */
		1239	originator->below = op;
		1240	}
		1241	else
		1242	{
		1243	/* If there are other objects, then */
		1244	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))
		1245	{
		1246	object *last = 0;
		1247
		1248	/*
		1249	* If there are multiple objects on this space, we do some trickier handling.
		1250	* We've already dealt with merging if appropriate.
		1251	* Generally, we want to put the new object on top. But if
		1252	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1253	* floor, we want to insert above that and no further.
		1254	* Also, if there are spell objects on this space, we stop processing
		1255	* once we get to them. This reduces the need to traverse over all of
		1256	* them when adding another one - this saves quite a bit of cpu time
		1257	* when lots of spells are cast in one area. Currently, it is presumed
		1258	* that flying non pickable objects are spell objects.
		1259	*/
		1260	while (top)
		1261	{
		1262	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1263	floor = top;
		1264
		1265	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1266	{
		1267	/* We insert above top, so we want this object below this */
		1268	top = top->below;
		1269	break;
		1270	}
		1271
		1272	last = top;
		1273	top = top->above;
1324	}	1274	}
1325	}
1326		1275
1327	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1276	/* Don't want top to be NULL, so set it to the last valid object */
1328	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1277	top = last;
1329	if (!QUERY_FLAG(op, FLAG_ALIVE))
1330	CLEAR_FLAG(op, FLAG_NO_STEAL);
1331		1278
1332	if (flag & INS_BELOW_ORIGINATOR) {	1279	/* We let update_position deal with figuring out what the space
1333	if (originator->map != op->map || originator->x != op->x ||	1280	* looks like instead of lots of conditions here.
1334	originator->y != op->y) {	1281	* makes things faster, and effectively the same result.
1335	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1336	abort();
1337	}
1338	op->above = originator;
1339	op->below = originator->below;
1340	if (op->below) op->below->above = op;
1341	else SET_MAP_OB(op->map, op->x, op->y, op);
1342	/* since *below* originator, no need to update top */
1343	originator->below = op;
1344	} else {
1345	/* If there are other objects, then */
1346	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1347	object *last=NULL;
1348	/*	1282	*/
1349	* If there are multiple objects on this space, we do some trickier handling.	1283
1350	* We've already dealt with merging if appropriate.	1284	/* Have object 'fall below' other objects that block view.
1351	* Generally, we want to put the new object on top. But if	1285	* Unless those objects are exits, type 66
1352	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1286	* If INS_ON_TOP is used, don't do this processing
1353	* floor, we want to insert above that and no further.	1287	* Need to find the object that in fact blocks view, otherwise
1354	* Also, if there are spell objects on this space, we stop processing	1288	* stacking is a bit odd.
1355	* once we get to them. This reduces the need to traverse over all of	1289	*/
1356	* them when adding another one - this saves quite a bit of cpu time	1290	if (!(flag & INS_ON_TOP) &&
1357	* when lots of spells are cast in one area. Currently, it is presumed	1291	(get_map_flags (op->map, 0, op->x, op->y, 0, 0) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))
1358	* that flying non pickable objects are spell objects.	1292	{
		1293	for (last = top; last != floor; last = last->below)
		1294	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1295	break;
		1296	/* Check to see if we found the object that blocks view,
		1297	* and make sure we have a below pointer for it so that
		1298	* we can get inserted below this one, which requires we
		1299	* set top to the object below us.
1359	*/	1300	*/
1360		1301	if (last && last->below && last != floor)
1361	while (top != NULL) {
1362	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1363	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1364	if (QUERY_FLAG(top, FLAG_NO_PICK)
1365	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1366	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1367	{
1368	/* We insert above top, so we want this object below this */
1369	top=top->below;
1370	break;
1371	}
1372	last = top;
1373	top = top->above;	1302	top = last->below;
1374	}	1303	}
1375	/* Don't want top to be NULL, so set it to the last valid object */
1376	top = last;
1377
1378	/* We let update_position deal with figuring out what the space
1379	* looks like instead of lots of conditions here.
1380	* makes things faster, and effectively the same result.
1381	*/
1382
1383	/* Have object 'fall below' other objects that block view.
1384	* Unless those objects are exits, type 66
1385	* If INS_ON_TOP is used, don't do this processing
1386	* Need to find the object that in fact blocks view, otherwise
1387	* stacking is a bit odd.
1388	*/
1389	if (!(flag & INS_ON_TOP) &&
1390	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1391	(op->face && !op->face->visibility)) {
1392	for (last=top; last != floor; last=last->below)
1393	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1394	/* Check to see if we found the object that blocks view,
1395	* and make sure we have a below pointer for it so that
1396	* we can get inserted below this one, which requires we
1397	* set top to the object below us.
1398	*/
1399	if (last && last->below && last != floor) top=last->below;
1400	}
1401	} /* If objects on this space */	1304	} /* If objects on this space */
		1305
1402	if (flag & INS_MAP_LOAD)	1306	if (flag & INS_MAP_LOAD)
1403	top = GET_MAP_TOP(op->map,op->x,op->y);	1307	top = GET_MAP_TOP (op->map, op->x, op->y);
		1308
1404	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1309	if (flag & INS_ABOVE_FLOOR_ONLY)
		1310	top = floor;
1405		1311
1406	/* Top is the object that our object (op) is going to get inserted above.	1312	/* Top is the object that our object (op) is going to get inserted above.
1407	*/	1313	*/
1408		1314
1409	/* First object on this space */	1315	/* First object on this space */
1410	if (!top) {	1316	if (!top)
		1317	{
1411	op->above = GET_MAP_OB(op->map, op->x, op->y);	1318	op->above = GET_MAP_OB (op->map, op->x, op->y);
		1319
		1320	if (op->above)
1412	if (op->above) op->above->below = op;	1321	op->above->below = op;
		1322
1413	op->below = NULL;	1323	op->below = 0;
1414	SET_MAP_OB(op->map, op->x, op->y, op);	1324	op->ms ().bot = op;
		1325	}
		1326	else
1415	} else { /* get inserted into the stack above top */	1327	{ /* get inserted into the stack above top */
1416	op->above = top->above;	1328	op->above = top->above;
		1329
		1330	if (op->above)
1417	if (op->above) op->above->below = op;	1331	op->above->below = op;
		1332
1418	op->below = top;	1333	op->below = top;
1419	top->above = op;	1334	top->above = op;
1420	}	1335	}
		1336
1421	if (op->above==NULL)	1337	if (!op->above)
1422	SET_MAP_TOP(op->map,op->x, op->y, op);	1338	op->ms ().top = op;
1423	} /* else not INS_BELOW_ORIGINATOR */	1339	} /* else not INS_BELOW_ORIGINATOR */
1424		1340
1425	if(op->type==PLAYER)	1341	if (op->type == PLAYER)
		1342	{
1426	op->contr->do_los=1;	1343	op->contr->do_los = 1;
		1344	++op->map->players;
		1345	op->map->touch ();
		1346	}
1427		1347
		1348	op->map->dirty = true;
		1349
1428	/* If we have a floor, we know the player, if any, will be above	1350	/* If we have a floor, we know the player, if any, will be above
1429	* it, so save a few ticks and start from there.	1351	* it, so save a few ticks and start from there.
1430	*/	1352	*/
1431	if (!(flag & INS_MAP_LOAD))	1353	if (!(flag & INS_MAP_LOAD))
1432	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1354	if (object *pl = op->ms ().player ())
1433	if (tmp->type == PLAYER)	1355	if (pl->contr->ns)
1434	tmp->contr->socket.update_look=1;	1356	pl->contr->ns->floorbox_update ();
1435	}
1436		1357
1437	/* If this object glows, it may affect lighting conditions that are	1358	/* If this object glows, it may affect lighting conditions that are
1438	* visible to others on this map. But update_all_los is really	1359	* visible to others on this map. But update_all_los is really
1439	* an inefficient way to do this, as it means los for all players	1360	* an inefficient way to do this, as it means los for all players
1440	* on the map will get recalculated. The players could very well	1361	* on the map will get recalculated. The players could very well
1441	* be far away from this change and not affected in any way -	1362	* be far away from this change and not affected in any way -
1442	* this should get redone to only look for players within range,	1363	* this should get redone to only look for players within range,
1443	* or just updating the P_NEED_UPDATE for spaces within this area	1364	* or just updating the P_UPTODATE for spaces within this area
1444	* of effect may be sufficient.	1365	* of effect may be sufficient.
1445	*/	1366	*/
1446	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1367	if (op->map->darkness && (op->glow_radius != 0))
1447	update_all_los(op->map, op->x, op->y);	1368	update_all_los (op->map, op->x, op->y);
1448		1369
1449
1450	/* updates flags (blocked, alive, no magic, etc) for this map space */	1370	/* updates flags (blocked, alive, no magic, etc) for this map space */
1451	update_object(op,UP_OBJ_INSERT);	1371	update_object (op, UP_OBJ_INSERT);
1452		1372
		1373	INVOKE_OBJECT (INSERT, op);
1453		1374
1454	/* Don't know if moving this to the end will break anything. However,	1375	/* Don't know if moving this to the end will break anything. However,
1455	* we want to have update_look set above before calling this.	1376	* we want to have floorbox_update called before calling this.
1456	*	1377	*
1457	* check_move_on() must be after this because code called from	1378	* check_move_on() must be after this because code called from
1458	* check_move_on() depends on correct map flags (so functions like	1379	* check_move_on() depends on correct map flags (so functions like
1459	* blocked() and wall() work properly), and these flags are updated by	1380	* blocked() and wall() work properly), and these flags are updated by
1460	* update_object().	1381	* update_object().
1461	*/	1382	*/
1462		1383
1463	/* if this is not the head or flag has been passed, don't check walk on status */	1384	/* if this is not the head or flag has been passed, don't check walk on status */
1464
1465	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1385	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1386	{
1466	if (check_move_on(op, originator))	1387	if (check_move_on (op, originator))
1467	return NULL;	1388	return 0;
1468		1389
1469	/* If we are a multi part object, lets work our way through the check	1390	/* If we are a multi part object, lets work our way through the check
1470	* walk on's.	1391	* walk on's.
1471	*/	1392	*/
1472	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1393	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1473	if (check_move_on (tmp, originator))	1394	if (check_move_on (tmp, originator))
1474	return NULL;	1395	return 0;
1475	}	1396	}
		1397
1476	return op;	1398	return op;
1477	}	1399	}
1478		1400
1479	/* this function inserts an object in the map, but if it	1401	/* this function inserts an object in the map, but if it
1480	* finds an object of its own type, it'll remove that one first.	1402	* finds an object of its own type, it'll remove that one first.
1481	* op is the object to insert it under: supplies x and the map.	1403	* op is the object to insert it under: supplies x and the map.
1482	*/	1404	*/
		1405	void
1483	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1406	replace_insert_ob_in_map (const char *arch_string, object *op)
1484	object *tmp;	1407	{
1485	object *tmp1;	1408	object *tmp, *tmp1;
1486		1409
1487	/* first search for itself and remove any old instances */	1410	/* first search for itself and remove any old instances */
1488		1411
1489	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1412	for (tmp = op->ms ().bot; tmp; tmp = tmp->above)
1490	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1413	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1491	remove_ob(tmp);	1414	tmp->destroy ();
1492	free_object(tmp);
1493	}
1494	}
1495		1415
1496	tmp1=arch_to_object(find_archetype(arch_string));	1416	tmp1 = arch_to_object (archetype::find (arch_string));
1497		1417
1498		1418	tmp1->x = op->x;
1499	tmp1->x = op->x; tmp1->y = op->y;	1419	tmp1->y = op->y;
1500	insert_ob_in_map(tmp1,op->map,op,0);	1420	insert_ob_in_map (tmp1, op->map, op, 0);
1501	}	1421	}
		1422
		1423	object *
		1424	object::insert_at (object *where, object *originator, int flags)
		1425	{
		1426	where->map->insert (this, where->x, where->y, originator, flags);
		1427	}
1502		1428
1503	/*	1429	/*
1504	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1430	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1505	* is returned contains nr objects, and the remaining parts contains	1431	* is returned contains nr objects, and the remaining parts contains
1506	* the rest (or is removed and freed if that number is 0).	1432	* the rest (or is removed and freed if that number is 0).
1507	* On failure, NULL is returned, and the reason put into the	1433	* On failure, NULL is returned, and the reason put into the
1508	* global static errmsg array.	1434	* global static errmsg array.
1509	*/	1435	*/
1510		1436	object *
1511	object *get_split_ob(object *orig_ob, uint32 nr) {	1437	get_split_ob (object *orig_ob, uint32 nr)
		1438	{
1512	object *newob;	1439	object *newob;
1513	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1440	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1514		1441
1515	if(orig_ob->nrof<nr) {	1442	if (orig_ob->nrof < nr)
1516	sprintf(errmsg,"There are only %d %ss.",	1443	{
1517	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1444	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1518	return NULL;	1445	return NULL;
1519	}	1446	}
		1447
1520	newob = object_create_clone(orig_ob);	1448	newob = object_create_clone (orig_ob);
		1449
1521	if((orig_ob->nrof-=nr)<1) {	1450	if ((orig_ob->nrof -= nr) < 1)
1522	if ( ! is_removed)	1451	orig_ob->destroy (1);
1523	remove_ob(orig_ob);
1524	free_object2(orig_ob, 1);
1525	}
1526	else if ( ! is_removed) {	1452	else if (!is_removed)
		1453	{
1527	if(orig_ob->env!=NULL)	1454	if (orig_ob->env != NULL)
1528	sub_weight (orig_ob->env,orig_ob->weight*nr);	1455	sub_weight (orig_ob->env, orig_ob->weight * nr);
1529	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1456	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1457	{
1530	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1458	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1531	LOG(llevDebug,
1532	"Error, Tried to split object whose map is not in memory.\n");	1459	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1533	return NULL;	1460	return NULL;
1534	}	1461	}
1535	}	1462	}
		1463
1536	newob->nrof=nr;	1464	newob->nrof = nr;
1537		1465
1538	return newob;	1466	return newob;
1539	}	1467	}
1540		1468
1541	/*	1469	/*
1542	* decrease_ob_nr(object, number) decreases a specified number from	1470	* decrease_ob_nr(object, number) decreases a specified number from
1543	* the amount of an object. If the amount reaches 0, the object	1471	* the amount of an object. If the amount reaches 0, the object
1544	* is subsequently removed and freed.	1472	* is subsequently removed and freed.
1545	*	1473	*
1546	* Return value: 'op' if something is left, NULL if the amount reached 0	1474	* Return value: 'op' if something is left, NULL if the amount reached 0
1547	*/	1475	*/
1548		1476
		1477	object *
1549	object *decrease_ob_nr (object *op, uint32 i)	1478	decrease_ob_nr (object *op, uint32 i)
1550	{	1479	{
1551	object *tmp;	1480	object *tmp;
1552	player *pl;
1553		1481
1554	if (i == 0) /* objects with op->nrof require this check */	1482	if (i == 0) /* objects with op->nrof require this check */
1555	return op;	1483	return op;
1556		1484
1557	if (i > op->nrof)	1485	if (i > op->nrof)
1558	i = op->nrof;	1486	i = op->nrof;
1559		1487
1560	if (QUERY_FLAG (op, FLAG_REMOVED))	1488	if (QUERY_FLAG (op, FLAG_REMOVED))
		1489	op->nrof -= i;
		1490	else if (op->env)
		1491	{
		1492	/* is this object in the players inventory, or sub container
		1493	* therein?
		1494	*/
		1495	tmp = op->in_player ();
		1496	/* nope. Is this a container the player has opened?
		1497	* If so, set tmp to that player.
		1498	* IMO, searching through all the players will mostly
		1499	* likely be quicker than following op->env to the map,
		1500	* and then searching the map for a player.
		1501	*/
		1502	if (!tmp)
		1503	for_all_players (pl)
		1504	if (pl->ob->container == op->env)
		1505	{
		1506	tmp = pl->ob;
		1507	break;
		1508	}
		1509
		1510	if (i < op->nrof)
		1511	{
		1512	sub_weight (op->env, op->weight * i);
		1513	op->nrof -= i;
		1514	if (tmp)
		1515	esrv_send_item (tmp, op);
		1516	}
		1517	else
		1518	{
		1519	op->remove ();
		1520	op->nrof = 0;
		1521	if (tmp)
		1522	esrv_del_item (tmp->contr, op->count);
		1523	}
1561	{	1524	}
		1525	else
		1526	{
		1527	object *above = op->above;
		1528
		1529	if (i < op->nrof)
1562	op->nrof -= i;	1530	op->nrof -= i;
1563	}	1531	else
1564	else if (op->env != NULL)
1565	{
1566	/* is this object in the players inventory, or sub container
1567	* therein?
1568	*/
1569	tmp = is_player_inv (op->env);
1570	/* nope. Is this a container the player has opened?
1571	* If so, set tmp to that player.
1572	* IMO, searching through all the players will mostly
1573	* likely be quicker than following op->env to the map,
1574	* and then searching the map for a player.
1575	*/
1576	if (!tmp) {
1577	for (pl=first_player; pl; pl=pl->next)
1578	if (pl->ob->container == op->env) break;
1579	if (pl) tmp=pl->ob;
1580	else tmp=NULL;
1581	}	1532	{
1582
1583	if (i < op->nrof) {
1584	sub_weight (op->env, op->weight * i);
1585	op->nrof -= i;
1586	if (tmp) {
1587	esrv_send_item(tmp, op);
1588	}
1589	} else {
1590	remove_ob (op);	1533	op->remove ();
1591	op->nrof = 0;	1534	op->nrof = 0;
1592	if (tmp) {
1593	esrv_del_item(tmp->contr, op->count);
1594	}	1535	}
1595	}
1596	}
1597	else
1598	{
1599	object *above = op->above;
1600		1536
1601	if (i < op->nrof) {
1602	op->nrof -= i;
1603	} else {
1604	remove_ob (op);
1605	op->nrof = 0;
1606	}
1607	/* Since we just removed op, op->above is null */	1537	/* Since we just removed op, op->above is null */
1608	for (tmp = above; tmp != NULL; tmp = tmp->above)	1538	for (tmp = above; tmp; tmp = tmp->above)
1609	if (tmp->type == PLAYER) {	1539	if (tmp->type == PLAYER)
		1540	{
1610	if (op->nrof)	1541	if (op->nrof)
1611	esrv_send_item(tmp, op);	1542	esrv_send_item (tmp, op);
1612	else	1543	else
1613	esrv_del_item(tmp->contr, op->count);	1544	esrv_del_item (tmp->contr, op->count);
1614	}	1545	}
1615	}	1546	}
1616		1547
1617	if (op->nrof) {	1548	if (op->nrof)
1618	return op;	1549	return op;
1619	} else {	1550	else
1620	free_object (op);	1551	{
		1552	op->destroy ();
1621	return NULL;	1553	return 0;
1622	}	1554	}
1623	}	1555	}
1624		1556
1625	/*	1557	/*
1626	* add_weight(object, weight) adds the specified weight to an object,	1558	* add_weight(object, weight) adds the specified weight to an object,
1627	* and also updates how much the environment(s) is/are carrying.	1559	* and also updates how much the environment(s) is/are carrying.
1628	*/	1560	*/
1629		1561
		1562	void
1630	void add_weight (object *op, signed long weight) {	1563	add_weight (object *op, signed long weight)
		1564	{
1631	while (op!=NULL) {	1565	while (op != NULL)
		1566	{
1632	if (op->type == CONTAINER) {	1567	if (op->type == CONTAINER)
1633	weight=(signed long)(weight*(100-op->stats.Str)/100);	1568	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1634	}	1569
1635	op->carrying+=weight;	1570	op->carrying += weight;
1636	op=op->env;	1571	op = op->env;
1637	}	1572	}
1638	}	1573	}
1639		1574
		1575	object *
		1576	insert_ob_in_ob (object *op, object *where)
		1577	{
		1578	if (!where)
		1579	{
		1580	char *dump = dump_object (op);
		1581	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1582	free (dump);
		1583	return op;
		1584	}
		1585
		1586	if (where->head)
		1587	{
		1588	LOG (llevDebug, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1589	where = where->head;
		1590	}
		1591
		1592	return where->insert (op);
		1593	}
		1594
1640	/*	1595	/*
1641	* insert_ob_in_ob(op,environment):	1596	* env->insert (op)
1642	* This function inserts the object op in the linked list	1597	* This function inserts the object op in the linked list
1643	* inside the object environment.	1598	* inside the object environment.
1644	*	1599	*
1645	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1646	* the inventory at the last position or next to other objects of the same
1647	* type.
1648	* Frank: Now sorted by type, archetype and magic!
1649	*
1650	* The function returns now pointer to inserted item, and return value can	1600	* The function returns now pointer to inserted item, and return value can
1651	* be != op, if items are merged. -Tero	1601	* be != op, if items are merged. -Tero
1652	*/	1602	*/
1653		1603
1654	object *insert_ob_in_ob(object *op,object *where) {	1604	object *
		1605	object::insert (object *op)
		1606	{
1655	object *tmp, *otmp;	1607	object *tmp, *otmp;
1656		1608
1657	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1609	if (!QUERY_FLAG (op, FLAG_REMOVED))
1658	dump_object(op);	1610	op->remove ();
1659	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1611
1660	return op;
1661	}
1662	if(where==NULL) {
1663	dump_object(op);
1664	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1665	return op;
1666	}
1667	if (where->head) {
1668	LOG(llevDebug,
1669	"Warning: Tried to insert object wrong part of multipart object.\n");
1670	where = where->head;
1671	}
1672	if (op->more) {	1612	if (op->more)
		1613	{
1673	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1614	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1674	&op->name, op->count);
1675	return op;	1615	return op;
1676	}	1616	}
		1617
1677	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1618	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1678	CLEAR_FLAG(op, FLAG_REMOVED);	1619	CLEAR_FLAG (op, FLAG_REMOVED);
1679	if(op->nrof) {	1620	if (op->nrof)
		1621	{
1680	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1622	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1681	if ( CAN_MERGE(tmp,op) ) {	1623	if (object::can_merge (tmp, op))
		1624	{
1682	/* return the original object and remove inserted object	1625	/* return the original object and remove inserted object
1683	(client needs the original object) */	1626	(client needs the original object) */
1684	tmp->nrof += op->nrof;	1627	tmp->nrof += op->nrof;
1685	/* Weight handling gets pretty funky. Since we are adding to	1628	/* Weight handling gets pretty funky. Since we are adding to
1686	* tmp->nrof, we need to increase the weight.	1629	* tmp->nrof, we need to increase the weight.
1687	*/	1630	*/
1688	add_weight (where, op->weight*op->nrof);	1631	add_weight (this, op->weight * op->nrof);
1689	SET_FLAG(op, FLAG_REMOVED);	1632	SET_FLAG (op, FLAG_REMOVED);
1690	free_object(op); /* free the inserted object */	1633	op->destroy (); /* free the inserted object */
1691	op = tmp;	1634	op = tmp;
1692	remove_ob (op); /* and fix old object's links */	1635	op->remove (); /* and fix old object's links */
1693	CLEAR_FLAG(op, FLAG_REMOVED);	1636	CLEAR_FLAG (op, FLAG_REMOVED);
1694	break;	1637	break;
1695	}	1638	}
1696		1639
1697	/* I assume combined objects have no inventory	1640	/* I assume combined objects have no inventory
1698	* We add the weight - this object could have just been removed	1641	* We add the weight - this object could have just been removed
1699	* (if it was possible to merge). calling remove_ob will subtract	1642	* (if it was possible to merge). calling remove_ob will subtract
1700	* the weight, so we need to add it in again, since we actually do	1643	* the weight, so we need to add it in again, since we actually do
1701	* the linking below	1644	* the linking below
1702	*/	1645	*/
1703	add_weight (where, op->weight*op->nrof);	1646	add_weight (this, op->weight * op->nrof);
		1647	}
1704	} else	1648	else
1705	add_weight (where, (op->weight+op->carrying));	1649	add_weight (this, (op->weight + op->carrying));
1706		1650
1707	otmp=is_player_inv(where);	1651	otmp = this->in_player ();
1708	if (otmp&&otmp->contr!=NULL) {	1652	if (otmp && otmp->contr)
1709	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1653	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1710	fix_player(otmp);	1654	otmp->update_stats ();
1711	}
1712		1655
1713	op->map=NULL;	1656	op->map = 0;
1714	op->env=where;	1657	op->env = this;
1715	op->above=NULL;	1658	op->above = 0;
1716	op->below=NULL;	1659	op->below = 0;
1717	op->x=0,op->y=0;	1660	op->x = 0, op->y = 0;
1718		1661
1719	/* reset the light list and los of the players on the map */	1662	/* reset the light list and los of the players on the map */
1720	if((op->glow_radius!=0)&&where->map)	1663	if ((op->glow_radius != 0) && map)
1721	{	1664	{
1722	#ifdef DEBUG_LIGHTS	1665	#ifdef DEBUG_LIGHTS
1723	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1666	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1724	op->name);
1725	#endif /* DEBUG_LIGHTS */	1667	#endif /* DEBUG_LIGHTS */
1726	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1668	if (map->darkness)
		1669	update_all_los (map, x, y);
1727	}	1670	}
1728		1671
1729	/* Client has no idea of ordering so lets not bother ordering it here.	1672	/* Client has no idea of ordering so lets not bother ordering it here.
1730	* It sure simplifies this function...	1673	* It sure simplifies this function...
1731	*/	1674	*/
1732	if (where->inv==NULL)	1675	if (!inv)
1733	where->inv=op;	1676	inv = op;
1734	else {	1677	else
		1678	{
1735	op->below = where->inv;	1679	op->below = inv;
1736	op->below->above = op;	1680	op->below->above = op;
1737	where->inv = op;	1681	inv = op;
1738	}	1682	}
		1683
		1684	INVOKE_OBJECT (INSERT, this);
		1685
1739	return op;	1686	return op;
1740	}	1687	}
1741		1688
1742	/*	1689	/*
1743	* Checks if any objects has a move_type that matches objects	1690	* Checks if any objects has a move_type that matches objects
…		…
1757	*	1704	*
1758	* MSW 2001-07-08: Check all objects on space, not just those below	1705	* MSW 2001-07-08: Check all objects on space, not just those below
1759	* object being inserted. insert_ob_in_map may not put new objects	1706	* object being inserted. insert_ob_in_map may not put new objects
1760	* on top.	1707	* on top.
1761	*/	1708	*/
1762		1709	int
1763	int check_move_on (object *op, object *originator)	1710	check_move_on (object *op, object *originator)
1764	{	1711	{
1765	object *tmp;	1712	object *tmp;
1766	tag_t tag;
1767	mapstruct *m=op->map;	1713	maptile *m = op->map;
1768	int x=op->x, y=op->y;	1714	int x = op->x, y = op->y;
		1715
1769	MoveType move_on, move_slow, move_block;	1716	MoveType move_on, move_slow, move_block;
1770		1717
1771	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1718	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1772	return 0;	1719	return 0;
1773		1720
1774	tag = op->count;
1775
1776	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1721	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1777	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1722	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1778	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1723	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1779		1724
1780	/* if nothing on this space will slow op down or be applied,	1725	/* if nothing on this space will slow op down or be applied,
1781	* no need to do checking below. have to make sure move_type	1726	* no need to do checking below. have to make sure move_type
1782	* is set, as lots of objects don't have it set - we treat that	1727	* is set, as lots of objects don't have it set - we treat that
1783	* as walking.	1728	* as walking.
1784	*/	1729	*/
1785	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1730	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1786	return 0;	1731	return 0;
1787		1732
1788	/* This is basically inverse logic of that below - basically,	1733	/* This is basically inverse logic of that below - basically,
1789	* if the object can avoid the move on or slow move, they do so,	1734	* if the object can avoid the move on or slow move, they do so,
1790	* but can't do it if the alternate movement they are using is	1735	* but can't do it if the alternate movement they are using is
1791	* blocked. Logic on this seems confusing, but does seem correct.	1736	* blocked. Logic on this seems confusing, but does seem correct.
1792	*/	1737	*/
1793	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1738	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1794	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1739	return 0;
1795		1740
1796	/* The objects have to be checked from top to bottom.	1741	/* The objects have to be checked from top to bottom.
1797	* Hence, we first go to the top:	1742	* Hence, we first go to the top:
1798	*/	1743	*/
1799		1744
1800	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1745	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1801	tmp->above!=NULL; tmp=tmp->above) {	1746	{
1802	/* Trim the search when we find the first other spell effect	1747	/* Trim the search when we find the first other spell effect
1803	* this helps performance so that if a space has 50 spell objects,	1748	* this helps performance so that if a space has 50 spell objects,
1804	* we don't need to check all of them.	1749	* we don't need to check all of them.
1805	*/	1750	*/
1806	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1751	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1752	break;
		1753	}
		1754
		1755	for (; tmp; tmp = tmp->below)
1807	}	1756	{
1808	for(;tmp!=NULL; tmp=tmp->below) {	1757	if (tmp == op)
1809	if (tmp == op) continue; /* Can't apply yourself */	1758	continue; /* Can't apply yourself */
1810		1759
1811	/* Check to see if one of the movement types should be slowed down.	1760	/* Check to see if one of the movement types should be slowed down.
1812	* Second check makes sure that the movement types not being slowed	1761	* Second check makes sure that the movement types not being slowed
1813	* (~slow_move) is not blocked on this space - just because the	1762	* (~slow_move) is not blocked on this space - just because the
1814	* space doesn't slow down swimming (for example), if you can't actually	1763	* space doesn't slow down swimming (for example), if you can't actually
1815	* swim on that space, can't use it to avoid the penalty.	1764	* swim on that space, can't use it to avoid the penalty.
1816	*/	1765	*/
1817	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1766	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1767	{
1818	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1768	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1819	((op->move_type & tmp->move_slow) &&
1820	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1769	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1770	{
1821		1771
1822	float diff;	1772	float
1823
1824	diff = tmp->move_slow_penalty*FABS(op->speed);	1773	diff = tmp->move_slow_penalty * FABS (op->speed);
		1774
1825	if (op->type == PLAYER) {	1775	if (op->type == PLAYER)
1826	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1776	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1827	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1777	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1828	diff /= 4.0;	1778	diff /= 4.0;
1829	}	1779
1830	}
1831	op->speed_left -= diff;	1780	op->speed_left -= diff;
1832	}	1781	}
1833	}	1782	}
1834		1783
1835	/* Basically same logic as above, except now for actual apply. */	1784	/* Basically same logic as above, except now for actual apply. */
1836	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1785	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1837	((op->move_type & tmp->move_on) &&
1838	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1786	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1839		1787	{
1840	move_apply(tmp, op, originator);	1788	move_apply (tmp, op, originator);
		1789
1841	if (was_destroyed (op, tag))	1790	if (op->destroyed ())
1842	return 1;	1791	return 1;
1843		1792
1844	/* what the person/creature stepped onto has moved the object	1793	/* what the person/creature stepped onto has moved the object
1845	* someplace new. Don't process any further - if we did,	1794	* someplace new. Don't process any further - if we did,
1846	* have a feeling strange problems would result.	1795	* have a feeling strange problems would result.
1847	*/	1796	*/
1848	if (op->map != m || op->x != x || op->y != y) return 0;	1797	if (op->map != m || op->x != x || op->y != y)
		1798	return 0;
1849	}	1799	}
1850	}	1800	}
		1801
1851	return 0;	1802	return 0;
1852	}	1803	}
1853		1804
1854	/*	1805	/*
1855	* present_arch(arch, map, x, y) searches for any objects with	1806	* present_arch(arch, map, x, y) searches for any objects with
1856	* a matching archetype at the given map and coordinates.	1807	* a matching archetype at the given map and coordinates.
1857	* The first matching object is returned, or NULL if none.	1808	* The first matching object is returned, or NULL if none.
1858	*/	1809	*/
1859		1810	object *
1860	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1811	present_arch (const archetype *at, maptile *m, int x, int y)
1861	object *tmp;	1812	{
1862	if(m==NULL || out_of_map(m,x,y)) {	1813	if (!m || out_of_map (m, x, y))
		1814	{
1863	LOG(llevError,"Present_arch called outside map.\n");	1815	LOG (llevError, "Present_arch called outside map.\n");
1864	return NULL;	1816	return NULL;
1865	}	1817	}
1866	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1818
		1819	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1867	if(tmp->arch == at)	1820	if (tmp->arch == at)
1868	return tmp;	1821	return tmp;
		1822
1869	return NULL;	1823	return NULL;
1870	}	1824	}
1871		1825
1872	/*	1826	/*
1873	* present(type, map, x, y) searches for any objects with	1827	* present(type, map, x, y) searches for any objects with
1874	* a matching type variable at the given map and coordinates.	1828	* a matching type variable at the given map and coordinates.
1875	* The first matching object is returned, or NULL if none.	1829	* The first matching object is returned, or NULL if none.
1876	*/	1830	*/
1877		1831	object *
1878	object *present(unsigned char type,mapstruct *m, int x,int y) {	1832	present (unsigned char type, maptile *m, int x, int y)
1879	object *tmp;	1833	{
1880	if(out_of_map(m,x,y)) {	1834	if (out_of_map (m, x, y))
		1835	{
1881	LOG(llevError,"Present called outside map.\n");	1836	LOG (llevError, "Present called outside map.\n");
1882	return NULL;	1837	return NULL;
1883	}	1838	}
1884	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1839
		1840	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1885	if(tmp->type==type)	1841	if (tmp->type == type)
1886	return tmp;	1842	return tmp;
		1843
1887	return NULL;	1844	return NULL;
1888	}	1845	}
1889		1846
1890	/*	1847	/*
1891	* present_in_ob(type, object) searches for any objects with	1848	* present_in_ob(type, object) searches for any objects with
1892	* a matching type variable in the inventory of the given object.	1849	* a matching type variable in the inventory of the given object.
1893	* The first matching object is returned, or NULL if none.	1850	* The first matching object is returned, or NULL if none.
1894	*/	1851	*/
1895		1852	object *
1896	object *present_in_ob(unsigned char type, const object *op) {	1853	present_in_ob (unsigned char type, const object *op)
1897	object *tmp;	1854	{
1898	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1855	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1899	if(tmp->type==type)	1856	if (tmp->type == type)
1900	return tmp;	1857	return tmp;
		1858
1901	return NULL;	1859	return NULL;
1902	}	1860	}
1903		1861
1904	/*	1862	/*
1905	* present_in_ob (type, str, object) searches for any objects with	1863	* present_in_ob (type, str, object) searches for any objects with
…		…
1913	* str is the string to match against. Note that we match against	1871	* str is the string to match against. Note that we match against
1914	* the object name, not the archetype name. this is so that the	1872	* the object name, not the archetype name. this is so that the
1915	* spell code can use one object type (force), but change it's name	1873	* spell code can use one object type (force), but change it's name
1916	* to be unique.	1874	* to be unique.
1917	*/	1875	*/
1918		1876	object *
1919	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1877	present_in_ob_by_name (int type, const char *str, const object *op)
1920	object *tmp;	1878	{
1921
1922	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1879	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1923	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1880	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1924	return tmp;	1881	return tmp;
1925	}	1882
1926	return NULL;	1883	return 0;
1927	}	1884	}
1928		1885
1929	/*	1886	/*
1930	* present_arch_in_ob(archetype, object) searches for any objects with	1887	* present_arch_in_ob(archetype, object) searches for any objects with
1931	* a matching archetype in the inventory of the given object.	1888	* a matching archetype in the inventory of the given object.
1932	* The first matching object is returned, or NULL if none.	1889	* The first matching object is returned, or NULL if none.
1933	*/	1890	*/
1934		1891	object *
1935	object *present_arch_in_ob(const archetype *at, const object *op) {	1892	present_arch_in_ob (const archetype *at, const object *op)
1936	object *tmp;	1893	{
1937	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1894	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1938	if( tmp->arch == at)	1895	if (tmp->arch == at)
1939	return tmp;	1896	return tmp;
		1897
1940	return NULL;	1898	return NULL;
1941	}	1899	}
1942		1900
1943	/*	1901	/*
1944	* activate recursively a flag on an object inventory	1902	* activate recursively a flag on an object inventory
1945	*/	1903	*/
		1904	void
1946	void flag_inv(object*op, int flag){	1905	flag_inv (object *op, int flag)
1947	object *tmp;	1906	{
1948	if(op->inv)	1907	if (op->inv)
1949	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1908	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1909	{
1950	SET_FLAG(tmp, flag);	1910	SET_FLAG (tmp, flag);
1951	flag_inv(tmp,flag);	1911	flag_inv (tmp, flag);
1952	}	1912	}
		1913	}
		1914
1953	}/*	1915	/*
1954	* desactivate recursively a flag on an object inventory	1916	* deactivate recursively a flag on an object inventory
1955	*/	1917	*/
		1918	void
1956	void unflag_inv(object*op, int flag){	1919	unflag_inv (object *op, int flag)
1957	object *tmp;	1920	{
1958	if(op->inv)	1921	if (op->inv)
1959	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1922	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1923	{
1960	CLEAR_FLAG(tmp, flag);	1924	CLEAR_FLAG (tmp, flag);
1961	unflag_inv(tmp,flag);	1925	unflag_inv (tmp, flag);
1962	}	1926	}
1963	}	1927	}
1964		1928
1965	/*	1929	/*
1966	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in	1930	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1967	* all it's inventory (recursively).	1931	* all it's inventory (recursively).
1968	* If checksums are used, a player will get set_cheat called for	1932	* If checksums are used, a player will get set_cheat called for
1969	* him/her-self and all object carried by a call to this function.	1933	* him/her-self and all object carried by a call to this function.
1970	*/	1934	*/
1971		1935	void
1972	void set_cheat(object *op) {	1936	set_cheat (object *op)
		1937	{
1973	SET_FLAG(op, FLAG_WAS_WIZ);	1938	SET_FLAG (op, FLAG_WAS_WIZ);
1974	flag_inv(op, FLAG_WAS_WIZ);	1939	flag_inv (op, FLAG_WAS_WIZ);
1975	}	1940	}
1976		1941
1977	/*	1942	/*
1978	* find_free_spot(object, map, x, y, start, stop) will search for	1943	* find_free_spot(object, map, x, y, start, stop) will search for
1979	* a spot at the given map and coordinates which will be able to contain	1944	* a spot at the given map and coordinates which will be able to contain
…		…
1993	* because arch_blocked (now ob_blocked) needs to know the movement type	1958	* because arch_blocked (now ob_blocked) needs to know the movement type
1994	* to know if the space in question will block the object. We can't use	1959	* to know if the space in question will block the object. We can't use
1995	* the archetype because that isn't correct if the monster has been	1960	* the archetype because that isn't correct if the monster has been
1996	* customized, changed states, etc.	1961	* customized, changed states, etc.
1997	*/	1962	*/
1998		1963	int
1999	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1964	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1965	{
2000	int i,index=0, flag;	1966	int index = 0, flag;
2001	static int altern[SIZEOFFREE];	1967	int altern[SIZEOFFREE];
2002		1968
2003	for(i=start;i<stop;i++) {	1969	for (int i = start; i < stop; i++)
		1970	{
2004	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1971	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2005	if(!flag)	1972	if (!flag)
2006	altern[index++]=i;	1973	altern [index++] = i;
2007		1974
2008	/* Basically, if we find a wall on a space, we cut down the search size.	1975	/* Basically, if we find a wall on a space, we cut down the search size.
2009	* In this way, we won't return spaces that are on another side of a wall.	1976	* In this way, we won't return spaces that are on another side of a wall.
2010	* This mostly work, but it cuts down the search size in all directions -	1977	* This mostly work, but it cuts down the search size in all directions -
2011	* if the space being examined only has a wall to the north and empty	1978	* if the space being examined only has a wall to the north and empty
2012	* spaces in all the other directions, this will reduce the search space	1979	* spaces in all the other directions, this will reduce the search space
2013	* to only the spaces immediately surrounding the target area, and	1980	* to only the spaces immediately surrounding the target area, and
2014	* won't look 2 spaces south of the target space.	1981	* won't look 2 spaces south of the target space.
2015	*/	1982	*/
2016	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1983	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2017	stop=maxfree[i];	1984	stop = maxfree[i];
2018	}	1985	}
2019	if(!index) return -1;	1986
		1987	if (!index)
		1988	return -1;
		1989
2020	return altern[RANDOM()%index];	1990	return altern[RANDOM () % index];
2021	}	1991	}
2022		1992
2023	/*	1993	/*
2024	* find_first_free_spot(archetype, mapstruct, x, y) works like	1994	* find_first_free_spot(archetype, maptile, x, y) works like
2025	* find_free_spot(), but it will search max number of squares.	1995	* find_free_spot(), but it will search max number of squares.
2026	* But it will return the first available spot, not a random choice.	1996	* But it will return the first available spot, not a random choice.
2027	* Changed 0.93.2: Have it return -1 if there is no free spot available.	1997	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2028	*/	1998	*/
2029		1999	int
2030	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2000	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2031	int i;	2001	{
2032	for(i=0;i<SIZEOFFREE;i++) {	2002	for (int i = 0; i < SIZEOFFREE; i++)
2033	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2003	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2034	return i;	2004	return i;
2035	}	2005
2036	return -1;	2006	return -1;
2037	}	2007	}
2038		2008
2039	/*	2009	/*
2040	* The function permute(arr, begin, end) randomly reorders the array	2010	* The function permute(arr, begin, end) randomly reorders the array
2041	* arr[begin..end-1].	2011	* arr[begin..end-1].
		2012	* now uses a fisher-yates shuffle, old permute was broken
2042	*/	2013	*/
		2014	static void
2043	static void permute(int *arr, int begin, int end)	2015	permute (int *arr, int begin, int end)
2044	{	2016	{
2045	int i, j, tmp, len;	2017	arr += begin;
		2018	end -= begin;
2046		2019
2047	len = end-begin;	2020	while (--end)
2048	for(i = begin; i < end; i++)	2021	swap (arr [end], arr [RANDOM () % (end + 1)]);
2049	{
2050	j = begin+RANDOM()%len;
2051
2052	tmp = arr[i];
2053	arr[i] = arr[j];
2054	arr[j] = tmp;
2055	}
2056	}	2022	}
2057		2023
2058	/* new function to make monster searching more efficient, and effective!	2024	/* new function to make monster searching more efficient, and effective!
2059	* This basically returns a randomized array (in the passed pointer) of	2025	* This basically returns a randomized array (in the passed pointer) of
2060	* the spaces to find monsters. In this way, it won't always look for	2026	* the spaces to find monsters. In this way, it won't always look for
2061	* monsters to the north first. However, the size of the array passed	2027	* monsters to the north first. However, the size of the array passed
2062	* covers all the spaces, so within that size, all the spaces within	2028	* covers all the spaces, so within that size, all the spaces within
2063	* the 3x3 area will be searched, just not in a predictable order.	2029	* the 3x3 area will be searched, just not in a predictable order.
2064	*/	2030	*/
		2031	void
2065	void get_search_arr(int *search_arr)	2032	get_search_arr (int *search_arr)
2066	{	2033	{
2067	int i;	2034	int i;
2068		2035
2069	for(i = 0; i < SIZEOFFREE; i++)	2036	for (i = 0; i < SIZEOFFREE; i++)
2070	{
2071	search_arr[i] = i;	2037	search_arr[i] = i;
2072	}
2073		2038
2074	permute(search_arr, 1, SIZEOFFREE1+1);	2039	permute (search_arr, 1, SIZEOFFREE1 + 1);
2075	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2040	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2076	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2041	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2077	}	2042	}
2078		2043
2079	/*	2044	/*
2080	* find_dir(map, x, y, exclude) will search some close squares in the	2045	* find_dir(map, x, y, exclude) will search some close squares in the
2081	* given map at the given coordinates for live objects.	2046	* given map at the given coordinates for live objects.
…		…
2086	* Perhaps incorrectly, but I'm making the assumption that exclude	2051	* Perhaps incorrectly, but I'm making the assumption that exclude
2087	* is actually want is going to try and move there. We need this info	2052	* is actually want is going to try and move there. We need this info
2088	* because we have to know what movement the thing looking to move	2053	* because we have to know what movement the thing looking to move
2089	* there is capable of.	2054	* there is capable of.
2090	*/	2055	*/
2091		2056	int
2092	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2057	find_dir (maptile *m, int x, int y, object *exclude)
		2058	{
2093	int i,max=SIZEOFFREE, mflags;	2059	int i, max = SIZEOFFREE, mflags;
		2060
2094	sint16 nx, ny;	2061	sint16 nx, ny;
2095	object *tmp;	2062	object *tmp;
2096	mapstruct *mp;	2063	maptile *mp;
		2064
2097	MoveType blocked, move_type;	2065	MoveType blocked, move_type;
2098		2066
2099	if (exclude && exclude->head) {	2067	if (exclude && exclude->head)
		2068	{
2100	exclude = exclude->head;	2069	exclude = exclude->head;
2101	move_type = exclude->move_type;	2070	move_type = exclude->move_type;
2102	} else {	2071	}
		2072	else
		2073	{
2103	/* If we don't have anything, presume it can use all movement types. */	2074	/* If we don't have anything, presume it can use all movement types. */
2104	move_type=MOVE_ALL;	2075	move_type = MOVE_ALL;
		2076	}
		2077
		2078	for (i = 1; i < max; i++)
2105	}	2079	{
2106
2107	for(i=1;i<max;i++) {
2108	mp = m;	2080	mp = m;
2109	nx = x + freearr_x[i];	2081	nx = x + freearr_x[i];
2110	ny = y + freearr_y[i];	2082	ny = y + freearr_y[i];
2111		2083
2112	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2084	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2085
2113	if (mflags & P_OUT_OF_MAP) {	2086	if (mflags & P_OUT_OF_MAP)
		2087	max = maxfree[i];
		2088	else
		2089	{
		2090	mapspace &ms = mp->at (nx, ny);
		2091
		2092	blocked = ms.move_block;
		2093
		2094	if ((move_type & blocked) == move_type)
2114	max = maxfree[i];	2095	max = maxfree[i];
2115	} else {
2116	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2117
2118	if ((move_type & blocked) == move_type) {
2119	max=maxfree[i];
2120	} else if (mflags & P_IS_ALIVE) {	2096	else if (mflags & P_IS_ALIVE)
2121	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2097	{
		2098	for (tmp = ms.bot; tmp; tmp = tmp->above)
2122	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2099	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2123	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2100	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2124	break;	2101	break;
2125	}	2102
2126	}
2127	if(tmp) {	2103	if (tmp)
2128	return freedir[i];	2104	return freedir[i];
2129	}
2130	}	2105	}
2131	}	2106	}
2132	}	2107	}
		2108
2133	return 0;	2109	return 0;
2134	}	2110	}
2135		2111
2136	/*	2112	/*
2137	* distance(object 1, object 2) will return the square of the	2113	* distance(object 1, object 2) will return the square of the
2138	* distance between the two given objects.	2114	* distance between the two given objects.
2139	*/	2115	*/
2140		2116	int
2141	int distance(const object *ob1, const object *ob2) {	2117	distance (const object *ob1, const object *ob2)
2142	int i;	2118	{
2143	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2119	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2144	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2145	return i;
2146	}	2120	}
2147		2121
2148	/*	2122	/*
2149	* find_dir_2(delta-x,delta-y) will return a direction in which	2123	* find_dir_2(delta-x,delta-y) will return a direction in which
2150	* an object which has subtracted the x and y coordinates of another	2124	* an object which has subtracted the x and y coordinates of another
2151	* object, needs to travel toward it.	2125	* object, needs to travel toward it.
2152	*/	2126	*/
2153		2127	int
2154	int find_dir_2(int x, int y) {	2128	find_dir_2 (int x, int y)
		2129	{
2155	int q;	2130	int q;
2156		2131
2157	if(y)	2132	if (y)
2158	q=x*100/y;	2133	q = x * 100 / y;
2159	else if (x)	2134	else if (x)
2160	q= -300*x;	2135	q = -300 * x;
2161	else	2136	else
2162	return 0;	2137	return 0;
2163		2138
2164	if(y>0) {	2139	if (y > 0)
		2140	{
2165	if(q < -242)	2141	if (q < -242)
2166	return 3 ;	2142	return 3;
2167	if (q < -41)	2143	if (q < -41)
2168	return 2 ;	2144	return 2;
2169	if (q < 41)	2145	if (q < 41)
2170	return 1 ;	2146	return 1;
2171	if (q < 242)	2147	if (q < 242)
2172	return 8 ;	2148	return 8;
2173	return 7 ;	2149	return 7;
2174	}	2150	}
2175		2151
2176	if (q < -242)	2152	if (q < -242)
2177	return 7 ;	2153	return 7;
2178	if (q < -41)	2154	if (q < -41)
2179	return 6 ;	2155	return 6;
2180	if (q < 41)	2156	if (q < 41)
2181	return 5 ;	2157	return 5;
2182	if (q < 242)	2158	if (q < 242)
2183	return 4 ;	2159	return 4;
2184		2160
2185	return 3 ;	2161	return 3;
2186	}	2162	}
2187		2163
2188	/*	2164	/*
2189	* absdir(int): Returns a number between 1 and 8, which represent	2165	* absdir(int): Returns a number between 1 and 8, which represent
2190	* the "absolute" direction of a number (it actually takes care of	2166	* the "absolute" direction of a number (it actually takes care of
2191	* "overflow" in previous calculations of a direction).	2167	* "overflow" in previous calculations of a direction).
2192	*/	2168	*/
2193		2169
		2170	int
2194	int absdir(int d) {	2171	absdir (int d)
2195	while(d<1) d+=8;	2172	{
2196	while(d>8) d-=8;	2173	while (d < 1)
		2174	d += 8;
		2175
		2176	while (d > 8)
		2177	d -= 8;
		2178
2197	return d;	2179	return d;
2198	}	2180	}
2199		2181
2200	/*	2182	/*
2201	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2183	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2202	* between two directions (which are expected to be absolute (see absdir())	2184	* between two directions (which are expected to be absolute (see absdir())
2203	*/	2185	*/
2204		2186
		2187	int
2205	int dirdiff(int dir1, int dir2) {	2188	dirdiff (int dir1, int dir2)
		2189	{
2206	int d;	2190	int d;
		2191
2207	d = abs(dir1 - dir2);	2192	d = abs (dir1 - dir2);
2208	if(d>4)	2193	if (d > 4)
2209	d = 8 - d;	2194	d = 8 - d;
		2195
2210	return d;	2196	return d;
2211	}	2197	}
2212		2198
2213	/* peterm:	2199	/* peterm:
2214	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2200	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2217	* This basically means that if direction is 15, then it could either go	2203	* This basically means that if direction is 15, then it could either go
2218	* direction 4, 14, or 16 to get back to where we are.	2204	* direction 4, 14, or 16 to get back to where we are.
2219	* Moved from spell_util.c to object.c with the other related direction	2205	* Moved from spell_util.c to object.c with the other related direction
2220	* functions.	2206	* functions.
2221	*/	2207	*/
2222
2223	int reduction_dir[SIZEOFFREE][3] = {	2208	int reduction_dir[SIZEOFFREE][3] = {
2224	{0,0,0}, /* 0 */	2209	{0, 0, 0}, /* 0 */
2225	{0,0,0}, /* 1 */	2210	{0, 0, 0}, /* 1 */
2226	{0,0,0}, /* 2 */	2211	{0, 0, 0}, /* 2 */
2227	{0,0,0}, /* 3 */	2212	{0, 0, 0}, /* 3 */
2228	{0,0,0}, /* 4 */	2213	{0, 0, 0}, /* 4 */
2229	{0,0,0}, /* 5 */	2214	{0, 0, 0}, /* 5 */
2230	{0,0,0}, /* 6 */	2215	{0, 0, 0}, /* 6 */
2231	{0,0,0}, /* 7 */	2216	{0, 0, 0}, /* 7 */
2232	{0,0,0}, /* 8 */	2217	{0, 0, 0}, /* 8 */
2233	{8,1,2}, /* 9 */	2218	{8, 1, 2}, /* 9 */
2234	{1,2,-1}, /* 10 */	2219	{1, 2, -1}, /* 10 */
2235	{2,10,12}, /* 11 */	2220	{2, 10, 12}, /* 11 */
2236	{2,3,-1}, /* 12 */	2221	{2, 3, -1}, /* 12 */
2237	{2,3,4}, /* 13 */	2222	{2, 3, 4}, /* 13 */
2238	{3,4,-1}, /* 14 */	2223	{3, 4, -1}, /* 14 */
2239	{4,14,16}, /* 15 */	2224	{4, 14, 16}, /* 15 */
2240	{5,4,-1}, /* 16 */	2225	{5, 4, -1}, /* 16 */
2241	{4,5,6}, /* 17 */	2226	{4, 5, 6}, /* 17 */
2242	{6,5,-1}, /* 18 */	2227	{6, 5, -1}, /* 18 */
2243	{6,20,18}, /* 19 */	2228	{6, 20, 18}, /* 19 */
2244	{7,6,-1}, /* 20 */	2229	{7, 6, -1}, /* 20 */
2245	{6,7,8}, /* 21 */	2230	{6, 7, 8}, /* 21 */
2246	{7,8,-1}, /* 22 */	2231	{7, 8, -1}, /* 22 */
2247	{8,22,24}, /* 23 */	2232	{8, 22, 24}, /* 23 */
2248	{8,1,-1}, /* 24 */	2233	{8, 1, -1}, /* 24 */
2249	{24,9,10}, /* 25 */	2234	{24, 9, 10}, /* 25 */
2250	{9,10,-1}, /* 26 */	2235	{9, 10, -1}, /* 26 */
2251	{10,11,-1}, /* 27 */	2236	{10, 11, -1}, /* 27 */
2252	{27,11,29}, /* 28 */	2237	{27, 11, 29}, /* 28 */
2253	{11,12,-1}, /* 29 */	2238	{11, 12, -1}, /* 29 */
2254	{12,13,-1}, /* 30 */	2239	{12, 13, -1}, /* 30 */
2255	{12,13,14}, /* 31 */	2240	{12, 13, 14}, /* 31 */
2256	{13,14,-1}, /* 32 */	2241	{13, 14, -1}, /* 32 */
2257	{14,15,-1}, /* 33 */	2242	{14, 15, -1}, /* 33 */
2258	{33,15,35}, /* 34 */	2243	{33, 15, 35}, /* 34 */
2259	{16,15,-1}, /* 35 */	2244	{16, 15, -1}, /* 35 */
2260	{17,16,-1}, /* 36 */	2245	{17, 16, -1}, /* 36 */
2261	{18,17,16}, /* 37 */	2246	{18, 17, 16}, /* 37 */
2262	{18,17,-1}, /* 38 */	2247	{18, 17, -1}, /* 38 */
2263	{18,19,-1}, /* 39 */	2248	{18, 19, -1}, /* 39 */
2264	{41,19,39}, /* 40 */	2249	{41, 19, 39}, /* 40 */
2265	{19,20,-1}, /* 41 */	2250	{19, 20, -1}, /* 41 */
2266	{20,21,-1}, /* 42 */	2251	{20, 21, -1}, /* 42 */
2267	{20,21,22}, /* 43 */	2252	{20, 21, 22}, /* 43 */
2268	{21,22,-1}, /* 44 */	2253	{21, 22, -1}, /* 44 */
2269	{23,22,-1}, /* 45 */	2254	{23, 22, -1}, /* 45 */
2270	{45,47,23}, /* 46 */	2255	{45, 47, 23}, /* 46 */
2271	{23,24,-1}, /* 47 */	2256	{23, 24, -1}, /* 47 */
2272	{24,9,-1}}; /* 48 */	2257	{24, 9, -1}
		2258	}; /* 48 */
2273		2259
2274	/* Recursive routine to step back and see if we can	2260	/* Recursive routine to step back and see if we can
2275	* find a path to that monster that we found. If not,	2261	* find a path to that monster that we found. If not,
2276	* we don't bother going toward it. Returns 1 if we	2262	* we don't bother going toward it. Returns 1 if we
2277	* can see a direct way to get it	2263	* can see a direct way to get it
2278	* Modified to be map tile aware -.MSW	2264	* Modified to be map tile aware -.MSW
2279	*/	2265	*/
2280		2266	int
2281
2282	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2267	can_see_monsterP (maptile *m, int x, int y, int dir)
		2268	{
2283	sint16 dx, dy;	2269	sint16 dx, dy;
2284	int mflags;	2270	int mflags;
2285		2271
		2272	if (dir < 0)
2286	if(dir<0) return 0; /* exit condition: invalid direction */	2273	return 0; /* exit condition: invalid direction */
2287		2274
2288	dx = x + freearr_x[dir];	2275	dx = x + freearr_x[dir];
2289	dy = y + freearr_y[dir];	2276	dy = y + freearr_y[dir];
2290		2277
2291	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2278	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2292		2279
2293	/* This functional arguably was incorrect before - it was	2280	/* This functional arguably was incorrect before - it was
2294	* checking for P_WALL - that was basically seeing if	2281	* checking for P_WALL - that was basically seeing if
2295	* we could move to the monster - this is being more	2282	* we could move to the monster - this is being more
2296	* literal on if we can see it. To know if we can actually	2283	* literal on if we can see it. To know if we can actually
2297	* move to the monster, we'd need the monster passed in or	2284	* move to the monster, we'd need the monster passed in or
2298	* at least its move type.	2285	* at least its move type.
2299	*/	2286	*/
2300	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2287	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2288	return 0;
2301		2289
2302	/* yes, can see. */	2290	/* yes, can see. */
2303	if(dir < 9) return 1;	2291	if (dir < 9)
		2292	return 1;
		2293
2304	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2294	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2305	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2295	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2306	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2296	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2307	}	2297	}
2308		2298
2309
2310
2311	/*	2299	/*
2312	* can_pick(picker, item): finds out if an object is possible to be	2300	* can_pick(picker, item): finds out if an object is possible to be
2313	* picked up by the picker. Returnes 1 if it can be	2301	* picked up by the picker. Returnes 1 if it can be
2314	* picked up, otherwise 0.	2302	* picked up, otherwise 0.
2315	*	2303	*
…		…
2317	* core dumps if they do.	2305	* core dumps if they do.
2318	*	2306	*
2319	* Add a check so we can't pick up invisible objects (0.93.8)	2307	* Add a check so we can't pick up invisible objects (0.93.8)
2320	*/	2308	*/
2321		2309
		2310	int
2322	int can_pick(const object *who, const object *item) {	2311	can_pick (const object *who, const object *item)
		2312	{
2323	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2313	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2324	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2314	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2325	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2315	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2326	(who->type==PLAYER||item->weight<who->weight/3));
2327	}	2316	}
2328
2329		2317
2330	/*	2318	/*
2331	* create clone from object to another	2319	* create clone from object to another
2332	*/	2320	*/
		2321	object *
2333	object *object_create_clone (object *asrc) {	2322	object_create_clone (object *asrc)
		2323	{
2334	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2324	object *dst = 0, *tmp, *src, *part, *prev, *item;
2335		2325
2336	if(!asrc) return NULL;	2326	if (!asrc)
		2327	return 0;
		2328
2337	src = asrc;	2329	src = asrc;
2338	if(src->head)	2330	if (src->head)
2339	src = src->head;	2331	src = src->head;
2340		2332
2341	prev = NULL;	2333	prev = 0;
2342	for(part = src; part; part = part->more) {	2334	for (part = src; part; part = part->more)
2343	tmp = get_object();	2335	{
2344	copy_object(part,tmp);	2336	tmp = part->clone ();
2345	tmp->x -= src->x;	2337	tmp->x -= src->x;
2346	tmp->y -= src->y;	2338	tmp->y -= src->y;
		2339
2347	if(!part->head) {	2340	if (!part->head)
		2341	{
2348	dst = tmp;	2342	dst = tmp;
2349	tmp->head = NULL;	2343	tmp->head = 0;
		2344	}
2350	} else {	2345	else
2351	tmp->head = dst;	2346	tmp->head = dst;
2352	}	2347
2353	tmp->more = NULL;	2348	tmp->more = 0;
		2349
2354	if(prev)	2350	if (prev)
2355	prev->more = tmp;	2351	prev->more = tmp;
		2352
2356	prev = tmp;	2353	prev = tmp;
2357	}	2354	}
2358	/*** copy inventory ***/	2355
2359	for(item = src->inv; item; item = item->below) {	2356	for (item = src->inv; item; item = item->below)
2360	(void) insert_ob_in_ob(object_create_clone(item),dst);	2357	insert_ob_in_ob (object_create_clone (item), dst);
2361	}
2362		2358
2363	return dst;	2359	return dst;
2364	}
2365
2366	/* return true if the object was destroyed, 0 otherwise */
2367	int was_destroyed (const object *op, tag_t old_tag)
2368	{
2369	/* checking for FLAG_FREED isn't necessary, but makes this function more
2370	* robust */
2371	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2372	}	2360	}
2373		2361
2374	/* GROS - Creates an object using a string representing its content. */	2362	/* GROS - Creates an object using a string representing its content. */
2375	/* Basically, we save the content of the string to a temp file, then call */	2363	/* Basically, we save the content of the string to a temp file, then call */
2376	/* load_object on it. I admit it is a highly inefficient way to make things, */	2364	/* load_object on it. I admit it is a highly inefficient way to make things, */
2377	/* but it was simple to make and allows reusing the load_object function. */	2365	/* but it was simple to make and allows reusing the load_object function. */
2378	/* Remember not to use load_object_str in a time-critical situation. */	2366	/* Remember not to use load_object_str in a time-critical situation. */
2379	/* Also remember that multiparts objects are not supported for now. */	2367	/* Also remember that multiparts objects are not supported for now. */
2380		2368	object *
2381	object* load_object_str(const char *obstr)	2369	load_object_str (const char *obstr)
2382	{	2370	{
2383	object *op;	2371	object *op;
2384	char filename[MAX_BUF];	2372	char filename[MAX_BUF];
		2373
2385	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2374	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2386		2375
2387	FILE *tempfile=fopen(filename,"w");	2376	FILE *tempfile = fopen (filename, "w");
		2377
2388	if (tempfile == NULL)	2378	if (tempfile == NULL)
2389	{	2379	{
2390	LOG(llevError,"Error - Unable to access load object temp file\n");	2380	LOG (llevError, "Error - Unable to access load object temp file\n");
2391	return NULL;	2381	return NULL;
2392	};	2382	}
		2383
2393	fprintf(tempfile,obstr);	2384	fprintf (tempfile, obstr);
2394	fclose(tempfile);	2385	fclose (tempfile);
2395		2386
2396	op=get_object();	2387	op = object::create ();
2397		2388
2398	object_thawer thawer (filename);	2389	object_thawer thawer (filename);
2399		2390
2400	if (thawer)	2391	if (thawer)
2401	load_object(thawer,op,0);	2392	load_object (thawer, op, 0);
2402		2393
2403	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2394	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2404	CLEAR_FLAG(op,FLAG_REMOVED);	2395	CLEAR_FLAG (op, FLAG_REMOVED);
2405		2396
2406	return op;	2397	return op;
2407	}	2398	}
2408		2399
2409	/* This returns the first object in who's inventory that	2400	/* This returns the first object in who's inventory that
2410	* has the same type and subtype match.	2401	* has the same type and subtype match.
2411	* returns NULL if no match.	2402	* returns NULL if no match.
2412	*/	2403	*/
		2404	object *
2413	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2405	find_obj_by_type_subtype (const object *who, int type, int subtype)
2414	{	2406	{
2415	object *tmp;
2416
2417	for (tmp=who->inv; tmp; tmp=tmp->below)	2407	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2418	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2408	if (tmp->type == type && tmp->subtype == subtype)
		2409	return tmp;
2419		2410
2420	return NULL;	2411	return 0;
2421	}	2412	}
2422		2413
2423	/* If ob has a field named key, return the link from the list,	2414	/* If ob has a field named key, return the link from the list,
2424	* otherwise return NULL.	2415	* otherwise return NULL.
2425	*	2416	*
2426	* key must be a passed in shared string - otherwise, this won't	2417	* key must be a passed in shared string - otherwise, this won't
2427	* do the desired thing.	2418	* do the desired thing.
2428	*/	2419	*/
		2420	key_value *
2429	key_value * get_ob_key_link(const object * ob, const char * key) {	2421	get_ob_key_link (const object *ob, const char *key)
2430	key_value * link;	2422	{
2431
2432	for (link = ob->key_values; link != NULL; link = link->next) {	2423	for (key_value *link = ob->key_values; link; link = link->next)
2433	if (link->key == key) {	2424	if (link->key == key)
2434	return link;	2425	return link;
2435	}	2426
2436	}	2427	return 0;
2437		2428	}
2438	return NULL;
2439	}
2440		2429
2441	/*	2430	/*
2442	* Returns the value of op has an extra_field for key, or NULL.	2431	* Returns the value of op has an extra_field for key, or NULL.
2443	*	2432	*
2444	* The argument doesn't need to be a shared string.	2433	* The argument doesn't need to be a shared string.
2445	*	2434	*
2446	* The returned string is shared.	2435	* The returned string is shared.
2447	*/	2436	*/
		2437	const char *
2448	const char * get_ob_key_value(const object * op, const char * const key) {	2438	get_ob_key_value (const object *op, const char *const key)
		2439	{
2449	key_value * link;	2440	key_value *link;
2450	const char * canonical_key;	2441	shstr_cmp canonical_key (key);
		2442
		2443	if (!canonical_key)
2451		2444	{
2452	canonical_key = shstr::find (key);
2453
2454	if (canonical_key == NULL) {
2455	/* 1. There being a field named key on any object	2445	/* 1. There being a field named key on any object
2456	* implies there'd be a shared string to find.	2446	* implies there'd be a shared string to find.
2457	* 2. Since there isn't, no object has this field.	2447	* 2. Since there isn't, no object has this field.
2458	* 3. Therefore, *this* object doesn't have this field.	2448	* 3. Therefore, *this* object doesn't have this field.
2459	*/	2449	*/
2460	return NULL;	2450	return 0;
2461	}	2451	}
2462		2452
2463	/* This is copied from get_ob_key_link() above -	2453	/* This is copied from get_ob_key_link() above -
2464	* only 4 lines, and saves the function call overhead.	2454	* only 4 lines, and saves the function call overhead.
2465	*/	2455	*/
2466	for (link = op->key_values; link != NULL; link = link->next) {	2456	for (link = op->key_values; link; link = link->next)
2467	if (link->key == canonical_key) {	2457	if (link->key == canonical_key)
2468	return link->value;	2458	return link->value;
2469	}	2459
2470	}	2460	return 0;
2471	return NULL;
2472	}	2461	}
2473		2462
2474		2463
2475	/*	2464	/*
2476	* Updates the canonical_key in op to value.	2465	* Updates the canonical_key in op to value.
…		…
2480	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2469	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2481	* keys.	2470	* keys.
2482	*	2471	*
2483	* Returns TRUE on success.	2472	* Returns TRUE on success.
2484	*/	2473	*/
		2474	int
2485	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2475	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2476	{
2486	key_value * field = NULL, *last=NULL;	2477	key_value *field = NULL, *last = NULL;
2487		2478
2488	for (field=op->key_values; field != NULL; field=field->next) {	2479	for (field = op->key_values; field != NULL; field = field->next)
		2480	{
2489	if (field->key != canonical_key) {	2481	if (field->key != canonical_key)
		2482	{
2490	last = field;	2483	last = field;
2491	continue;	2484	continue;
2492	}	2485	}
2493		2486
2494	if (value)	2487	if (value)
2495	field->value = value;	2488	field->value = value;
2496	else {	2489	else
		2490	{
2497	/* Basically, if the archetype has this key set,	2491	/* Basically, if the archetype has this key set,
2498	* we need to store the null value so when we save	2492	* we need to store the null value so when we save
2499	* it, we save the empty value so that when we load,	2493	* it, we save the empty value so that when we load,
2500	* we get this value back again.	2494	* we get this value back again.
2501	*/	2495	*/
2502	if (get_ob_key_link (&op->arch->clone, canonical_key))	2496	if (get_ob_key_link (&op->arch->clone, canonical_key))
2503	field->value = 0;	2497	field->value = 0;
		2498	else
		2499	{
		2500	if (last)
		2501	last->next = field->next;
2504	else	2502	else
2505	{
2506	if (last) last->next = field->next;
2507	else op->key_values = field->next;	2503	op->key_values = field->next;
2508		2504
2509	delete field;	2505	delete field;
2510	}	2506	}
2511	}	2507	}
2512	return TRUE;	2508	return TRUE;
2513	}	2509	}
2514	/* IF we get here, key doesn't exist */	2510	/* IF we get here, key doesn't exist */
2515		2511
2516	/* No field, we'll have to add it. */	2512	/* No field, we'll have to add it. */
2517		2513
2518	if (!add_key) {	2514	if (!add_key)
2519	return FALSE;	2515	return FALSE;
2520	}	2516
2521	/* There isn't any good reason to store a null	2517	/* There isn't any good reason to store a null
2522	* value in the key/value list. If the archetype has	2518	* value in the key/value list. If the archetype has
2523	* this key, then we should also have it, so shouldn't	2519	* this key, then we should also have it, so shouldn't
2524	* be here. If user wants to store empty strings,	2520	* be here. If user wants to store empty strings,
2525	* should pass in ""	2521	* should pass in ""
2526	*/	2522	*/
2527	if (value == NULL) return TRUE;	2523	if (value == NULL)
2528
2529	field = new key_value;
2530
2531	field->key = canonical_key;
2532	field->value = value;
2533	/* Usual prepend-addition. */
2534	field->next = op->key_values;
2535	op->key_values = field;
2536
2537	return TRUE;	2524	return TRUE;
		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;
2538	}	2535	}
2539		2536
2540	/*	2537	/*
2541	* Updates the key in op to value.	2538	* Updates the key in op to value.
2542	*	2539	*
…		…
2544	* and not add new ones.	2541	* and not add new ones.
2545	* In general, should be little reason FALSE is ever passed in for add_key	2542	* In general, should be little reason FALSE is ever passed in for add_key
2546	*	2543	*
2547	* Returns TRUE on success.	2544	* Returns TRUE on success.
2548	*/	2545	*/
		2546	int
2549	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2547	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2550	{	2548	{
2551	shstr key_ (key);	2549	shstr key_ (key);
		2550
2552	return set_ob_key_value_s (op, key_, value, add_key);	2551	return set_ob_key_value_s (op, key_, value, add_key);
2553	}	2552	}
		2553
		2554	object::depth_iterator::depth_iterator (object *container)
		2555	: iterator_base (container)
		2556	{
		2557	while (item->inv)
		2558	item = item->inv;
		2559	}
		2560
		2561	void
		2562	object::depth_iterator::next ()
		2563	{
		2564	if (item->below)
		2565	{
		2566	item = item->below;
		2567
		2568	while (item->inv)
		2569	item = item->inv;
		2570	}
		2571	else
		2572	item = item->env;
		2573	}
		2574
		2575
		2576	const char *
		2577	object::flag_desc (char *desc, int len) const
		2578	{
		2579	char *p = desc;
		2580	bool first = true;
		2581
		2582	*p = 0;
		2583
		2584	for (int i = 0; i < NUM_FLAGS; i++)
		2585	{
		2586	if (len <= 10) // magic constant!
		2587	{
		2588	snprintf (p, len, ",...");
		2589	break;
		2590	}
		2591
		2592	if (flag [i])
		2593	{
		2594	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2595	len -= cnt;
		2596	p += cnt;
		2597	first = false;
		2598	}
		2599	}
		2600
		2601	return desc;
		2602	}
		2603
		2604	// return a suitable string describing an object in enough detail to find it
		2605	const char *
		2606	object::debug_desc (char *info) const
		2607	{
		2608	char flagdesc[512];
		2609	char info2[256 * 4];
		2610	char *p = info;
		2611
		2612	p += snprintf (p, 512, "{cnt:%d,uuid:<1,%" PRIx64 ">,name:\"%s%s%s\",flags:[%s],type:%d}",
		2613	count, uuid.seq,
		2614	&name,
		2615	title ? "\",title:" : "",
		2616	title ? (const char *)title : "",
		2617	flag_desc (flagdesc, 512), type);
		2618
		2619	if (env)
		2620	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2621
		2622	if (map)
		2623	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2624
		2625	return info;
		2626	}
		2627
		2628	const char *
		2629	object::debug_desc () const
		2630	{
		2631	static char info[256 * 4];
		2632	return debug_desc (info);
		2633	}
		2634

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