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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 1.94 by root, Wed Dec 27 05:22:35 2006 UTC

1	/*
2	* static char *rcsid_object_c =
3	* "$Id: object.C,v 1.20 2006/09/08 18:26:22 root Exp $";
4	*/
5
6	/*	1	/*
7	CrossFire, A Multiplayer game for X-windows	2	CrossFire, A Multiplayer game for X-windows
8		3
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	4	Copyright (C) 2001 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	5	Copyright (C) 1992 Frank Tore Johansen
…		…
21		16
22	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	18	along with this program; if not, write to the Free Software
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25		20
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	21	The authors can be reached via e-mail at <crossfire@schmorp.de>
27	*/	22	*/
28		23
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.	24	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying	25	sub/add_weight will transcend the environment updating the carrying
31	variable. */	26	variable. */
32	#include <global.h>	27	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	28	#include <stdio.h>
35	#include <sys/types.h>	29	#include <sys/types.h>
36	#include <sys/uio.h>	30	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	31	#include <object.h>
39	#include <funcpoint.h>	32	#include <funcpoint.h>
40	#include <skills.h>
41	#include <loader.h>	33	#include <loader.h>
		34
		35	#include <bitset>
		36
42	int nrofallocobjects = 0;	37	int nrofallocobjects = 0;
		38	static UUID uuid;
		39	const uint64 UUID_SKIP = 1<<19;
43		40
44	object *objects; /* Pointer to the list of used objects */
45	object *active_objects; /* List of active objects that need to be processed */	41	object *active_objects; /* List of active objects that need to be processed */
46		42
47	short freearr_x[SIZEOFFREE]=	43	short freearr_x[SIZEOFFREE] = { 0, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
48	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	44	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
50	short freearr_y[SIZEOFFREE]=	45	};
51	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	46	short freearr_y[SIZEOFFREE] = { 0, -1, -1, 0, 1, 1, 1, 0, -1, -2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
52	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	47	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	int maxfree[SIZEOFFREE]=	48	};
54	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	49	int maxfree[SIZEOFFREE] = { 0, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	50	48, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		51	};
56	int freedir[SIZEOFFREE]= {	52	int freedir[SIZEOFFREE] = {
57	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	53	0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
58	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	54	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		55	};
59		56
		57	static void
		58	write_uuid (void)
		59	{
		60	char filename1[MAX_BUF], filename2[MAX_BUF];
		61
		62	sprintf (filename1, "%s/uuid", settings.localdir);
		63	sprintf (filename2, "%s/uuid~", settings.localdir);
		64
		65	FILE *fp;
		66
		67	if (!(fp = fopen (filename2, "w")))
		68	{
		69	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
		70	return;
		71	}
		72
		73	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
		74	fclose (fp);
		75	rename (filename2, filename1);
		76	}
		77
		78	static void
		79	read_uuid (void)
		80	{
		81	char filename[MAX_BUF];
		82
		83	sprintf (filename, "%s/uuid", settings.localdir);
		84
		85	FILE *fp;
		86
		87	if (!(fp = fopen (filename, "r")))
		88	{
		89	if (errno == ENOENT)
		90	{
		91	LOG (llevInfo, "RESET uid to 1\n");
		92	uuid.seq = 0;
		93	write_uuid ();
		94	return;
		95	}
		96
		97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		98	_exit (1);
		99	}
		100
		101	int version;
		102	unsigned long long uid;
		103	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)
		104	{
		105	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);
		106	_exit (1);
		107	}
		108
		109	uuid.seq = uid;
		110	write_uuid ();
		111	LOG (llevDebug, "read UID: %" PRId64 "\n", uid);
		112	fclose (fp);
		113	}
		114
		115	UUID
		116	gen_uuid ()
		117	{
		118	UUID uid;
		119
		120	uid.seq = ++uuid.seq;
		121
		122	if (!(uuid.seq & (UUID_SKIP - 1)))
		123	write_uuid ();
		124
		125	return uid;
		126	}
		127
		128	void
		129	init_uuid ()
		130	{
		131	read_uuid ();
		132	}
60		133
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	134	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		135	static int
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	136	compare_ob_value_lists_one (const object *wants, const object *has)
		137	{
63	key_value * wants_field;	138	key_value *wants_field;
64		139
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	140	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	141	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	142	* different structure or at least keep the lists sorted...
68	*/	143	*/
69		144
70	/* For each field in wants, */	145	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	146	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		147	{
72	key_value * has_field;	148	key_value *has_field;
73		149
74	/* Look for a field in has with the same key. */	150	/* Look for a field in has with the same key. */
75	has_field = get_ob_key_link(has, wants_field->key);	151	has_field = get_ob_key_link (has, wants_field->key);
		152
		153	if (has_field == NULL)
76		154	{
77	if (has_field == NULL) {
78	/* No field with that name. */	155	/* No field with that name. */
79	return FALSE;	156	return FALSE;
80	}	157	}
81		158
82	/* Found the matching field. */	159	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {	160	if (has_field->value != wants_field->value)
		161	{
84	/* Values don't match, so this half of the comparison is false. */	162	/* Values don't match, so this half of the comparison is false. */
85	return FALSE;	163	return FALSE;
86	}	164	}
87		165
88	/* If we get here, we found a match. Now for the next field in wants. */	166	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90		167	}
		168
91	/* If we get here, every field in wants has a matching field in has. */	169	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	170	return TRUE;
93	}	171	}
94		172
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	173	/* Returns TRUE if ob1 has the same key_values as ob2. */
		174	static int
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	175	compare_ob_value_lists (const object *ob1, const object *ob2)
		176	{
97	/* However, there may be fields in has which aren't partnered in wants,	177	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	178	* so we need to run the comparison *twice*. :(
99	*/	179	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	180	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
101	}	181	}
102		182
103	/* Function examines the 2 objects given to it, and returns true if	183	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	184	* they can be merged together.
105	*	185	*
106	* Note that this function appears a lot longer than the macro it	186	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	187	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	188	* reduce this to the same efficiency.
109	*	189	*
110	* Check nrof variable *before* calling CAN_MERGE()	190	* Check nrof variable *before* calling can_merge()
111	*	191	*
112	* Improvements made with merge: Better checking on potion, and also	192	* Improvements made with merge: Better checking on potion, and also
113	* check weight	193	* check weight
114	*/	194	*/
115		195
116	bool
117	object::can_merge (object *ob1, object *ob2)	196	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	197	{
119	/* A couple quicksanity checks */	198	/* A couple quicksanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	199	if (ob1 == ob2
		200	|| ob1->type != ob2->type
		201	|| ob1->speed != ob2->speed
		202	|| ob1->value != ob2->value
		203	|| ob1->name != ob2->name)
121	return 0;	204	return 0;
122		205
123	if (ob1->speed != ob2->speed)	206	//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	207	/* 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	208	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).	209	* used to store nrof).
129	*/	210	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)	211	if (ob1->nrof + ob2->nrof >= 1UL << 31)
…		…
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	221	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		222
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	223	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	224	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		225
145		226	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	227	|| 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) ||	228	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	229	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	230	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	231	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||	232	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||	233	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
161	(ob1->attacktype != ob2->attacktype) ||	234	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	235	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	236	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	237	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	238	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	239	|| ob1->animation_id != ob2->animation_id
167	(ob1->client_type != ob2->client_type) ||	240	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	241	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	242	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	243	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	244	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	245	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	246	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	247	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	248	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	249	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	250	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
178	return 0;	251	return 0;
179		252
180	/* This is really a spellbook check - really, we should	253	/* This is really a spellbook check - really, we should
181	* check all objects in the inventory.	254	* check all objects in the inventory.
182	*/	255	*/
183	if (ob1->inv || ob2->inv)	256	if (ob1->inv || ob2->inv)
184	{	257	{
185	/* if one object has inventory but the other doesn't, not equiv */	258	/* if one object has inventory but the other doesn't, not equiv */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))	259	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;	260	return 0;
188		261
189	/* Now check to see if the two inventory objects could merge */	262	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	263	if (!object::can_merge (ob1->inv, ob2->inv))
191	return 0;	264	return 0;
192		265
193	/* inventory ok - still need to check rest of this object to see	266	/* inventory ok - still need to check rest of this object to see
194	* if it is valid.	267	* if it is valid.
195	*/	268	*/
196	}	269	}
…		…
204		277
205	/* Note sure why the following is the case - either the object has to	278	/* 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	279	* be animated or have a very low speed. Is this an attempted monster
207	* check?	280	* check?
208	*/	281	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	282	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	283	return 0;
212		284
213	switch (ob1->type)	285	switch (ob1->type)
214	{	286	{
215	case SCROLL:	287	case SCROLL:
216	if (ob1->level != ob2->level)	288	if (ob1->level != ob2->level)
217	return 0;	289	return 0;
218	break;	290	break;
219	}	291	}
220		292
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	293	if (ob1->key_values != NULL || ob2->key_values != NULL)
222	{	294	{
223	/* At least one of these has key_values. */	295	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	296	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
225	/* One has fields, but the other one doesn't. */	297	/* One has fields, but the other one doesn't. */
226	return 0;	298	return 0;
227	else if (!compare_ob_value_lists (ob1, ob2))	299	else if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	300	return 0;
229	}	301	}
230		302
231	//TODO: generate an event or call into perl for additional checks	303	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	304	if (ob1->self || ob2->self)
233	{	305	{
234	ob1->optimise ();	306	ob1->optimise ();
235	ob2->optimise ();	307	ob2->optimise ();
236		308
237	if (ob1->self || ob2->self)	309	if (ob1->self || ob2->self)
238	return 0;	310	return 0;
239	}	311	}
240		312
241	/* Everything passes, must be OK. */	313	/* Everything passes, must be OK. */
242	return 1;	314	return 1;
243	}	315	}
		316
244	/*	317	/*
245	* sum_weight() is a recursive function which calculates the weight	318	* sum_weight() is a recursive function which calculates the weight
246	* an object is carrying. It goes through in figures out how much	319	* an object is carrying. It goes through in figures out how much
247	* containers are carrying, and sums it up.	320	* containers are carrying, and sums it up.
248	*/	321	*/
249	signed long sum_weight(object *op) {	322	long
		323	sum_weight (object *op)
		324	{
250	signed long sum;	325	long sum;
251	object *inv;	326	object *inv;
		327
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	328	for (sum = 0, inv = op->inv; inv != NULL; inv = inv->below)
		329	{
253	if (inv->inv)	330	if (inv->inv)
254	sum_weight(inv);	331	sum_weight (inv);
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	332	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
256	}	333	}
		334
257	if (op->type == CONTAINER && op->stats.Str)	335	if (op->type == CONTAINER && op->stats.Str)
258	sum = (sum * (100 - op->stats.Str))/100;	336	sum = (sum * (100 - op->stats.Str)) / 100;
		337
259	if(op->carrying != sum)	338	if (op->carrying != sum)
260	op->carrying = sum;	339	op->carrying = sum;
		340
261	return sum;	341	return sum;
262	}	342	}
263		343
264	/**	344	/**
265	* Return the outermost environment object for a given object.	345	* Return the outermost environment object for a given object.
266	*/	346	*/
267		347
		348	object *
268	object *object_get_env_recursive (object *op) {	349	object_get_env_recursive (object *op)
		350	{
269	while (op->env != NULL)	351	while (op->env != NULL)
270	op = op->env;	352	op = op->env;
271	return op;	353	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	}	354	}
286		355
287	/*	356	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	357	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.	358	* Some error messages.
290	* The result of the dump is stored in the static global errmsg array.	359	* The result of the dump is stored in the static global errmsg array.
291	*/	360	*/
292		361
293	void dump_object2(object *op) {	362	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) {	363	dump_object (object *op)
340	if(op==NULL) {	364	{
341	strcpy(errmsg,"[NULL pointer]");	365	if (!op)
342	return;	366	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		367
348	void dump_all_objects(void) {	368	object_freezer freezer;
349	object *op;	369	save_object (freezer, op, 1);
350	for(op=objects;op!=NULL;op=op->next) {	370	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	371	}
355		372
356	/*	373	/*
357	* get_nearest_part(multi-object, object 2) returns the part of the	374	* get_nearest_part(multi-object, object 2) returns the part of the
358	* multi-object 1 which is closest to the second object.	375	* multi-object 1 which is closest to the second object.
359	* If it's not a multi-object, it is returned.	376	* If it's not a multi-object, it is returned.
360	*/	377	*/
361		378
		379	object *
362	object *get_nearest_part(object *op, const object *pl) {	380	get_nearest_part (object *op, const object *pl)
		381	{
363	object *tmp,*closest;	382	object *tmp, *closest;
364	int last_dist,i;	383	int last_dist, i;
		384
365	if(op->more==NULL)	385	if (op->more == NULL)
366	return op;	386	return op;
367	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	387	for (last_dist = distance (op, pl), closest = op, tmp = op->more; tmp != NULL; tmp = tmp->more)
368	if((i=distance(tmp,pl))<last_dist)	388	if ((i = distance (tmp, pl)) < last_dist)
369	closest=tmp,last_dist=i;	389	closest = tmp, last_dist = i;
370	return closest;	390	return closest;
371	}	391	}
372		392
373	/*	393	/*
374	* Returns the object which has the count-variable equal to the argument.	394	* Returns the object which has the count-variable equal to the argument.
375	*/	395	*/
376		396
		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	for (object *op = object::first; op; op = op->next)
380	if(op->count==i)	401	if (op->count == i)
381	break;	402	return op;
		403
382	return op;	404	return 0;
383	}	405	}
384		406
385	/*	407	/*
386	* Returns the first object which has a name equal to the argument.	408	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	409	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	410	* Enables features like "patch <name-of-other-player> food 999"
389	*/	411	*/
390		412
		413	object *
391	object *find_object_name(const char *str) {	414	find_object_name (const char *str)
392	const char *name = shstr::find (str);	415	{
		416	shstr_cmp str_ (str);
393	object *op;	417	object *op;
		418
394	for(op=objects;op!=NULL;op=op->next)	419	for (op = object::first; op != NULL; op = op->next)
395	if(&op->name == name)	420	if (op->name == str_)
396	break;	421	break;
397		422
398	return op;	423	return op;
399	}	424	}
400		425
		426	void
401	void free_all_object_data ()	427	free_all_object_data ()
402	{	428	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	429	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	}	430	}
440		431
441	/*	432	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	433	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	434	* skill and experience objects.
444	*/	435	*/
445	void set_owner (object *op, object *owner)	436	void
		437	object::set_owner (object *owner)
446	{	438	{
447	if(owner==NULL||op==NULL)	439	if (!owner)
448	return;	440	return;
449		441
450	/* next line added to allow objects which own objects */	442	/* next line added to allow objects which own objects */
451	/* Add a check for ownercounts in here, as I got into an endless loop	443	/* 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	444	* with the fireball owning a poison cloud which then owned the
453	* fireball. I believe that was caused by one of the objects getting	445	* fireball. I believe that was caused by one of the objects getting
454	* freed and then another object replacing it. Since the ownercounts	446	* 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.	447	* didn't match, this check is valid and I believe that cause is valid.
456	*/	448	*/
457	while (owner->owner && owner!=owner->owner &&	449	while (owner->owner)
458	owner->ownercount==owner->owner->count) owner=owner->owner;	450	owner = owner->owner;
459		451
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;	452	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	}	453	}
495		454
496	/* Zero the key_values on op, decrementing the shared-string	455	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	456	* refcounts and freeing the links.
498	*/	457	*/
		458	static void
499	static void free_key_values(object * op)	459	free_key_values (object *op)
500	{	460	{
501	for (key_value *i = op->key_values; i != 0; )	461	for (key_value *i = op->key_values; i != 0;)
502	{	462	{
503	key_value *next = i->next;	463	key_value *next = i->next;
504	delete i;	464	delete i;
		465
505	i = next;	466	i = next;
506	}	467	}
507		468
508	op->key_values = 0;	469	op->key_values = 0;
509	}	470	}
510		471
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	/*	472	/*
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,	473	* copy_to first frees everything allocated by the dst object,
575	* and then copies the contends of the first object into the second	474	* and then copies the contents of itself into the second
576	* object, allocating what needs to be allocated. Basically, any	475	* object, allocating what needs to be allocated. Basically, any
577	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	476	* 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	477	* if the first object is freed, the pointers in the new object
579	* will point at garbage.	478	* will point at garbage.
580	*/	479	*/
581		480	void
582	void copy_object (object *op2, object *op)	481	object::copy_to (object *dst)
583	{	482	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	483	bool is_freed = QUERY_FLAG (dst, FLAG_FREED);
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	484	bool is_removed = QUERY_FLAG (dst, FLAG_REMOVED);
586		485
587	op2->clone (op);	486	*(object_copy *)dst = *this;
588		487
589	if (is_freed) SET_FLAG (op, FLAG_FREED);	488	if (is_freed)
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);	489	SET_FLAG (dst, FLAG_FREED);
591		490
		491	if (is_removed)
		492	SET_FLAG (dst, FLAG_REMOVED);
		493
592	if (op2->speed < 0)	494	if (speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;	495	dst->speed_left = speed_left - RANDOM () % 200 / 100.0;
594		496
595	/* Copy over key_values, if any. */	497	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	498	if (key_values)
597	{	499	{
598	key_value *tail = NULL;	500	key_value *tail = 0;
599	key_value *i;	501	key_value *i;
600		502
601	op->key_values = NULL;	503	dst->key_values = 0;
602		504
603	for (i = op2->key_values; i != NULL; i = i->next)	505	for (i = key_values; i; i = i->next)
604	{	506	{
605	key_value *new_link = new key_value;	507	key_value *new_link = new key_value;
606		508
607	new_link->next = NULL;	509	new_link->next = 0;
608	new_link->key = i->key;	510	new_link->key = i->key;
609	new_link->value = i->value;	511	new_link->value = i->value;
610		512
611	/* Try and be clever here, too. */	513	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	514	if (!dst->key_values)
613	{	515	{
614	op->key_values = new_link;	516	dst->key_values = new_link;
615	tail = new_link;	517	tail = new_link;
616	}	518	}
617	else	519	else
618	{	520	{
619	tail->next = new_link;	521	tail->next = new_link;
620	tail = new_link;	522	tail = new_link;
621	}	523	}
622	}	524	}
623	}	525	}
624		526
625	update_ob_speed (op);	527	dst->set_speed (dst->speed);
626	}	528	}
627		529
		530	object *
628	object::object ()	531	object::clone ()
629	{	532	{
630	count = ++ob_count;	533	object *neu = create ();
631		534	copy_to (neu);
632	next = objects;	535	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	}	536	}
649		537
650	/*	538	/*
651	* If an object with the IS_TURNABLE() flag needs to be turned due	539	* 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	540	* 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.	541	* be called to update the face variable, _and_ how it looks on the map.
654	*/	542	*/
655		543
		544	void
656	void update_turn_face(object *op) {	545	update_turn_face (object *op)
		546	{
657	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	547	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || op->arch == NULL)
658	return;	548	return;
659	SET_ANIMATION(op, op->direction);	549	SET_ANIMATION (op, op->direction);
660	update_object(op,UP_OBJ_FACE);	550	update_object (op, UP_OBJ_FACE);
661	}	551	}
662		552
663	/*	553	/*
664	* Updates the speed of an object. If the speed changes from 0 to another	554	* 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.	555	* 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.	556	* This function needs to be called whenever the speed of an object changes.
667	*/	557	*/
668		558	void
669	void update_ob_speed(object *op) {	559	object::set_speed (float speed)
		560	{
670	extern int arch_init;	561	extern int arch_init;
671		562
672	/* No reason putting the archetypes objects on the speed list,	563	/* No reason putting the archetypes objects on the speed list,
673	* since they never really need to be updated.	564	* since they never really need to be updated.
674	*/	565	*/
675		566	if (flag [FLAG_FREED] && speed)
676	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {	567	{
677	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	568	LOG (llevError, "Object %s is freed but has speed.\n", &name);
678	#ifdef MANY_CORES
679	abort();
680	#else
681	op->speed = 0;	569	speed = 0;
682	#endif
683	}	570	}
		571
		572	this->speed = speed;
		573
684	if (arch_init) {	574	if (arch_init)
		575	return;
		576
		577	if (FABS (speed) > MIN_ACTIVE_SPEED)
		578	{
		579	/* If already on active list, don't do anything */
		580	if (active_next || active_prev || this == active_objects)
685	return;	581	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		582
692	/* process_events() expects us to insert the object at the beginning	583	/* process_events() expects us to insert the object at the beginning
693	* of the list. */	584	* of the list. */
694	op->active_next = active_objects;	585	active_next = active_objects;
		586
695	if (op->active_next!=NULL)	587	if (active_next)
696	op->active_next->active_prev = op;	588	active_next->active_prev = this;
		589
697	active_objects = op;	590	active_objects = this;
		591	}
		592	else
698	}	593	{
699	else {
700	/* If not on the active list, nothing needs to be done */	594	/* If not on the active list, nothing needs to be done */
701	if (!op->active_next && !op->active_prev && op!=active_objects)	595	if (!active_next && !active_prev && this != active_objects)
702	return;	596	return;
703		597
704	if (op->active_prev==NULL) {	598	if (!active_prev)
		599	{
705	active_objects = op->active_next;	600	active_objects = active_next;
		601
706	if (op->active_next!=NULL)	602	if (active_next)
707	op->active_next->active_prev = NULL;	603	active_next->active_prev = 0;
708	}	604	}
709	else {	605	else
		606	{
710	op->active_prev->active_next = op->active_next;	607	active_prev->active_next = active_next;
		608
711	if (op->active_next)	609	if (active_next)
712	op->active_next->active_prev = op->active_prev;	610	active_next->active_prev = active_prev;
713	}	611	}
		612
714	op->active_next = NULL;	613	active_next = 0;
715	op->active_prev = NULL;	614	active_prev = 0;
716	}	615	}
717	}	616	}
718		617
719	/* This function removes object 'op' from the list of active	618	/* This function removes object 'op' from the list of active
720	* objects.	619	* objects.
…		…
722	* reference maps where you don't want an object that isn't	621	* reference maps where you don't want an object that isn't
723	* in play chewing up cpu time getting processed.	622	* in play chewing up cpu time getting processed.
724	* The reverse of this is to call update_ob_speed, which	623	* The reverse of this is to call update_ob_speed, which
725	* will do the right thing based on the speed of the object.	624	* will do the right thing based on the speed of the object.
726	*/	625	*/
		626	void
727	void remove_from_active_list(object *op)	627	remove_from_active_list (object *op)
728	{	628	{
729	/* If not on the active list, nothing needs to be done */	629	/* If not on the active list, nothing needs to be done */
730	if (!op->active_next && !op->active_prev && op!=active_objects)	630	if (!op->active_next && !op->active_prev && op != active_objects)
731	return;	631	return;
732		632
733	if (op->active_prev==NULL) {	633	if (op->active_prev == NULL)
		634	{
734	active_objects = op->active_next;	635	active_objects = op->active_next;
735	if (op->active_next!=NULL)	636	if (op->active_next != NULL)
736	op->active_next->active_prev = NULL;	637	op->active_next->active_prev = NULL;
		638	}
		639	else
737	}	640	{
738	else {
739	op->active_prev->active_next = op->active_next;	641	op->active_prev->active_next = op->active_next;
740	if (op->active_next)	642	if (op->active_next)
741	op->active_next->active_prev = op->active_prev;	643	op->active_next->active_prev = op->active_prev;
742	}	644	}
743	op->active_next = NULL;	645	op->active_next = NULL;
744	op->active_prev = NULL;	646	op->active_prev = NULL;
745	}	647	}
746		648
747	/*	649	/*
748	* update_object() updates the array which represents the map.	650	* update_object() updates the the map.
749	* It takes into account invisible objects (and represent squares covered	651	* It takes into account invisible objects (and represent squares covered
750	* by invisible objects by whatever is below them (unless it's another	652	* by invisible objects by whatever is below them (unless it's another
751	* invisible object, etc...)	653	* invisible object, etc...)
752	* If the object being updated is beneath a player, the look-window	654	* 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	655	* of that player is updated (this might be a suboptimal way of
754	* updating that window, though, since update_object() is called _often_)	656	* updating that window, though, since update_object() is called _often_)
755	*	657	*
756	* action is a hint of what the caller believes need to be done.	658	* 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:	659	* current action are:
762	* UP_OBJ_INSERT: op was inserted	660	* UP_OBJ_INSERT: op was inserted
763	* UP_OBJ_REMOVE: op was removed	661	* UP_OBJ_REMOVE: op was removed
764	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	662	* 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.	663	* as that is easier than trying to look at what may have changed.
766	* UP_OBJ_FACE: only the objects face has changed.	664	* UP_OBJ_FACE: only the objects face has changed.
767	*/	665	*/
768		666	void
769	void update_object(object *op, int action) {	667	update_object (object *op, int action)
770	int update_now=0, flags;	668	{
771	MoveType move_on, move_off, move_block, move_slow;	669	MoveType move_on, move_off, move_block, move_slow;
772		670
773	if (op == NULL) {	671	if (op == NULL)
		672	{
774	/* this should never happen */	673	/* this should never happen */
775	LOG(llevDebug,"update_object() called for NULL object.\n");	674	LOG (llevDebug, "update_object() called for NULL object.\n");
776	return;	675	return;
777	}
778		676	}
779	if(op->env!=NULL) {	677
		678	if (op->env)
		679	{
780	/* Animation is currently handled by client, so nothing	680	/* Animation is currently handled by client, so nothing
781	* to do in this case.	681	* to do in this case.
782	*/	682	*/
783	return;	683	return;
784	}	684	}
785		685
786	/* If the map is saving, don't do anything as everything is	686	/* If the map is saving, don't do anything as everything is
787	* going to get freed anyways.	687	* going to get freed anyways.
788	*/	688	*/
789	if (!op->map || op->map->in_memory == MAP_SAVING) return;	689	if (!op->map || op->map->in_memory == MAP_SAVING)
790		690	return;
		691
791	/* make sure the object is within map boundaries */	692	/* make sure the object is within map boundaries */
792	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	693	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)) {	694	{
794	LOG(llevError,"update_object() called for object out of map!\n");	695	LOG (llevError, "update_object() called for object out of map!\n");
795	#ifdef MANY_CORES	696	#ifdef MANY_CORES
796	abort();	697	abort ();
797	#endif	698	#endif
798	return;	699	return;
799	}
800		700	}
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		701
		702	mapspace &m = op->ms ();
		703
		704	if (m.flags_ & P_NEED_UPDATE)
		705	/* nop */;
808	if (action == UP_OBJ_INSERT) {	706	else if (action == UP_OBJ_INSERT)
		707	{
		708	// this is likely overkill, TODO: revisit (schmorp)
809	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	709	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))	710	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
813	update_now=1;	711	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
814		712	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		713	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
815	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	714	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
816	update_now=1;	715	|| (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;	716	|| (m.move_off | op->move_off ) != m.move_off
827		717	|| (m.move_slow | op->move_slow) != m.move_slow
828	/* This isn't perfect, but I don't expect a lot of objects to	718	/* This isn't perfect, but I don't expect a lot of objects to
829	* to have move_allow right now.	719	* to have move_allow right now.
830	*/	720	*/
831	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	721	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
832	update_now=1;	722	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
833		723	m.flags_ = P_NEED_UPDATE;
834	if ((move_slow | op->move_slow) != move_slow)
835	update_now=1;
836	}	724	}
837	/* if the object is being removed, we can't make intelligent	725	/* if the object is being removed, we can't make intelligent
838	* decisions, because remove_ob can't really pass the object	726	* decisions, because remove_ob can't really pass the object
839	* that is being removed.	727	* that is being removed.
840	*/	728	*/
841	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	729	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
842	update_now=1;	730	m.flags_ = P_NEED_UPDATE;
843	} else if (action == UP_OBJ_FACE) {	731	else if (action == UP_OBJ_FACE)
844	/* Nothing to do for that case */	732	/* Nothing to do for that case */ ;
845	}
846	else {	733	else
847	LOG(llevError,"update_object called with invalid action: %d\n", action);	734	LOG (llevError, "update_object called with invalid action: %d\n", action);
848	}
849		735
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)	736	if (op->more)
856	update_object(op->more, action);	737	update_object (op->more, action);
857	}	738	}
858		739
		740	object::vector object::objects; // not yet used
		741	object *object::first;
859		742
		743	object::object ()
		744	{
		745	SET_FLAG (this, FLAG_REMOVED);
		746
		747	expmul = 1.0;
		748	face = blank_face;
		749	}
		750
		751	object::~object ()
		752	{
		753	free_key_values (this);
		754	}
		755
		756	void object::link ()
		757	{
		758	count = ++ob_count;
		759	uuid = gen_uuid ();
		760
		761	prev = 0;
		762	next = object::first;
		763
		764	if (object::first)
		765	object::first->prev = this;
		766
		767	object::first = this;
		768	}
		769
		770	void object::unlink ()
		771	{
		772	if (this == object::first)
		773	object::first = next;
		774
		775	/* Remove this object from the list of used objects */
		776	if (prev) prev->next = next;
		777	if (next) next->prev = prev;
		778
		779	prev = 0;
		780	next = 0;
		781	}
		782
860	/*	783	/*
861	* free_object() frees everything allocated by an object, removes	784	* Remove and free all objects in the inventory of the given object.
862	* it from the list of used objects, and puts it on the list of	785	* object.c ?
863	* free objects. The IS_FREED() flag is set in the object.
864	* The object must have been removed by remove_ob() first for
865	* this function to succeed.
866	*	786	*/
867	* If free_inventory is set, free inventory as well. Else drop items in
868	* inventory to the ground.
869	*/
870
871	void	787	void
872	free_object (object * ob)	788	object::destroy_inv (bool drop_to_ground)
873	{	789	{
874	free_object2 (ob, 0);	790	// need to check first, because the checks below might segfault
		791	// as we might be on an invalid mapspace and crossfire code
		792	// is too buggy to ensure that the inventory is empty.
		793	// corollary: if you create arrows etc. with stuff in tis inventory,
		794	// cf will crash below with off-map x and y
		795	if (!inv)
		796	return;
		797
		798	/* Only if the space blocks everything do we not process -
		799	* if some form of movement is allowed, let objects
		800	* drop on that space.
		801	*/
		802	if (!drop_to_ground
		803	|| !map
		804	|| map->in_memory != MAP_IN_MEMORY
		805	|| map->at (x, y).move_block == MOVE_ALL)
		806	{
		807	while (inv)
		808	{
		809	inv->destroy_inv (drop_to_ground);
		810	inv->destroy ();
		811	}
		812	}
		813	else
		814	{ /* Put objects in inventory onto this space */
		815	while (inv)
		816	{
		817	object *op = inv;
		818
		819	if (op->flag [FLAG_STARTEQUIP]
		820	|| op->flag [FLAG_NO_DROP]
		821	|| op->type == RUNE
		822	|| op->type == TRAP
		823	|| op->flag [FLAG_IS_A_TEMPLATE])
		824	op->destroy ();
		825	else
		826	map->insert (op, x, y);
		827	}
		828	}
		829	}
		830
		831	object *object::create ()
		832	{
		833	object *op = new object;
		834	op->link ();
		835	return op;
875	}	836	}
876		837
877	void	838	void
878	free_object2 (object * ob, int free_inventory)	839	object::do_destroy ()
879	{	840	{
880	object *tmp, *op;	841	if (flag [FLAG_IS_LINKED])
		842	remove_button_link (this);
881		843
882	if (!QUERY_FLAG (ob, FLAG_REMOVED))	844	if (flag [FLAG_FRIENDLY])
883	{
884	LOG (llevDebug, "Free object called with non removed object\n");
885	dump_object (ob);
886	#ifdef MANY_CORES
887	abort ();
888	#endif
889	}
890
891	if (QUERY_FLAG (ob, FLAG_FRIENDLY))
892	{
893	LOG (llevMonster, "Warning: tried to free friendly object.\n");
894	remove_friendly_object (ob);	845	remove_friendly_object (this);
895	}
896		846
897	if (QUERY_FLAG (ob, FLAG_FREED))	847	if (!flag [FLAG_REMOVED])
898	{	848	remove ();
899	dump_object (ob);	849
900	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	850	if (flag [FLAG_FREED])
901	return;	851	return;
902	}
903		852
904	if (ob->more != NULL)	853	set_speed (0);
		854
		855	flag [FLAG_FREED] = 1;
		856
		857	attachable::do_destroy ();
		858
		859	destroy_inv (true);
		860	unlink ();
		861
		862	// hack to ensure that freed objects still have a valid map
		863	{
		864	static maptile *freed_map; // freed objects are moved here to avoid crashes
		865
		866	if (!freed_map)
905	{	867	{
906	free_object2 (ob->more, free_inventory);	868	freed_map = new maptile;
907	ob->more = NULL;	869
		870	freed_map->name = "/internal/freed_objects_map";
		871	freed_map->width = 3;
		872	freed_map->height = 3;
		873
		874	freed_map->allocate ();
908	}	875	}
909		876
910	if (ob->inv)	877	map = freed_map;
911	{	878	x = 1;
912	/* Only if the space blocks everything do we not process -	879	y = 1;
913	* if some form of movement is allowed, let objects	880	}
914	* drop on that space.
915	*/
916	if (free_inventory || ob->map == NULL
917	|| ob->map->in_memory != MAP_IN_MEMORY
918	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
919	{
920	op = ob->inv;
921		881
922	while (op != NULL)	882	head = 0;
		883
		884	if (more)
923	{	885	{
924	tmp = op->below;	886	more->destroy ();
925	remove_ob (op);	887	more = 0;
926	free_object2 (op, free_inventory);
927	op = tmp;
928	}	888	}
929	}
930	else
931	{ /* Put objects in inventory onto this space */
932	op = ob->inv;
933		889
934	while (op != NULL)	890	// clear those pointers that likely might have circular references to us
935	{	891	owner = 0;
936	tmp = op->below;	892	enemy = 0;
937	remove_ob (op);	893	attacked_by = 0;
938		894
939	if (QUERY_FLAG (op, FLAG_STARTEQUIP)	895	// only relevant for players(?), but make sure of it anyways
940	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE	896	contr = 0;
941	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))	897	}
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		898
950	op = tmp;	899	void
951	}	900	object::destroy (bool destroy_inventory)
952	}	901	{
953	}	902	if (destroyed ())
		903	return;
954		904
955	/* Remove object from the active list */	905	if (destroy_inventory)
956	ob->speed = 0;	906	destroy_inv (false);
957	update_ob_speed (ob);
958		907
959	SET_FLAG (ob, FLAG_FREED);	908	attachable::destroy ();
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	}
970	else
971	{
972	ob->prev->next = ob->next;
973
974	if (ob->next != NULL)
975	ob->next->prev = ob->prev;
976	}
977
978	free_key_values (ob);
979
980	/* Now link it with the free_objects list: */
981	ob->prev = 0;
982	ob->next = 0;
983
984	delete ob;
985	}	909	}
986		910
987	/*	911	/*
988	* sub_weight() recursively (outwards) subtracts a number from the	912	* sub_weight() recursively (outwards) subtracts a number from the
989	* weight of an object (and what is carried by it's environment(s)).	913	* weight of an object (and what is carried by it's environment(s)).
990	*/	914	*/
991		915	void
992	void sub_weight (object *op, signed long weight) {	916	sub_weight (object *op, signed long weight)
		917	{
993	while (op != NULL) {	918	while (op != NULL)
		919	{
994	if (op->type == CONTAINER) {	920	if (op->type == CONTAINER)
995	weight=(signed long)(weight*(100-op->stats.Str)/100);	921	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
996	}	922
997	op->carrying-=weight;	923	op->carrying -= weight;
998	op = op->env;	924	op = op->env;
999	}	925	}
1000	}	926	}
1001		927
1002	/* remove_ob(op):	928	/* op->remove ():
1003	* This function removes the object op from the linked list of objects	929	* This function removes the object op from the linked list of objects
1004	* which it is currently tied to. When this function is done, the	930	* which it is currently tied to. When this function is done, the
1005	* object will have no environment. If the object previously had an	931	* object will have no environment. If the object previously had an
1006	* environment, the x and y coordinates will be updated to	932	* environment, the x and y coordinates will be updated to
1007	* the previous environment.	933	* the previous environment.
1008	* Beware: This function is called from the editor as well!	934	* Beware: This function is called from the editor as well!
1009	*/	935	*/
1010		936	void
1011	void remove_ob(object *op) {	937	object::remove ()
		938	{
1012	object *tmp,*last=NULL;	939	object *tmp, *last = 0;
1013	object *otmp;	940	object *otmp;
1014	tag_t tag;
1015	int check_walk_off;
1016	mapstruct *m;
1017	sint16 x,y;
1018
1019		941
1020	if(QUERY_FLAG(op,FLAG_REMOVED)) {	942	if (QUERY_FLAG (this, FLAG_REMOVED))
1021	dump_object(op);	943	return;
1022	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1023		944
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);	945	SET_FLAG (this, FLAG_REMOVED);
		946	INVOKE_OBJECT (REMOVE, this);
1040		947
		948	if (more)
		949	more->remove ();
		950
1041	/*	951	/*
1042	* In this case, the object to be removed is in someones	952	* In this case, the object to be removed is in someones
1043	* inventory.	953	* inventory.
1044	*/	954	*/
1045	if(op->env!=NULL) {	955	if (env)
		956	{
1046	if(op->nrof)	957	if (nrof)
1047	sub_weight(op->env, op->weight*op->nrof);	958	sub_weight (env, weight * nrof);
1048	else	959	else
1049	sub_weight(op->env, op->weight+op->carrying);	960	sub_weight (env, weight + carrying);
1050		961
1051	/* NO_FIX_PLAYER is set when a great many changes are being	962	/* NO_FIX_PLAYER is set when a great many changes are being
1052	* made to players inventory. If set, avoiding the call	963	* made to players inventory. If set, avoiding the call
1053	* to save cpu time.	964	* to save cpu time.
1054	*/	965	*/
1055	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	966	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1056	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	967	otmp->update_stats ();
1057	fix_player(otmp);
1058		968
1059	if(op->above!=NULL)	969	if (above != NULL)
1060	op->above->below=op->below;	970	above->below = below;
1061	else	971	else
1062	op->env->inv=op->below;	972	env->inv = below;
1063		973
1064	if(op->below!=NULL)	974	if (below != NULL)
1065	op->below->above=op->above;	975	below->above = above;
1066		976
1067	/* we set up values so that it could be inserted into	977	/* we set up values so that it could be inserted into
1068	* the map, but we don't actually do that - it is up	978	* the map, but we don't actually do that - it is up
1069	* to the caller to decide what we want to do.	979	* to the caller to decide what we want to do.
		980	*/
		981	x = env->x, y = env->y;
		982	map = env->map;
		983	above = 0, below = 0;
		984	env = 0;
		985	}
		986	else if (map)
		987	{
		988	/* Re did the following section of code - it looks like it had
		989	* lots of logic for things we no longer care about
		990	*/
		991
		992	/* link the object above us */
		993	if (above)
		994	above->below = below;
		995	else
		996	map->at (x, y).top = below; /* we were top, set new top */
		997
		998	/* Relink the object below us, if there is one */
		999	if (below)
		1000	below->above = above;
		1001	else
		1002	{
		1003	/* Nothing below, which means we need to relink map object for this space
		1004	* use translated coordinates in case some oddness with map tiling is
		1005	* evident
1070	*/	1006	*/
1071	op->x=op->env->x,op->y=op->env->y;	1007	if (GET_MAP_OB (map, x, y) != this)
1072	op->map=op->env->map;	1008	{
1073	op->above=NULL,op->below=NULL;	1009	char *dump = dump_object (this);
1074	op->env=NULL;	1010	LOG (llevError,
		1011	"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);
		1012	free (dump);
		1013	dump = dump_object (GET_MAP_OB (map, x, y));
		1014	LOG (llevError, "%s\n", dump);
		1015	free (dump);
		1016	}
		1017
		1018	map->at (x, y).bot = above; /* goes on above it. */
		1019	}
		1020
		1021	above = 0;
		1022	below = 0;
		1023
		1024	if (map->in_memory == MAP_SAVING)
1075	return;	1025	return;
1076	}
1077		1026
1078	/* If we get here, we are removing it from a map */	1027	int check_walk_off = !flag [FLAG_NO_APPLY];
1079	if (op->map == NULL) return;
1080		1028
1081	x = op->x;	1029	for (tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
1082	y = op->y;	1030	{
1083	m = get_map_from_coord(op->map, &x, &y);	1031	/* No point updating the players look faces if he is the object
1084		1032	* being removed.
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	*/	1033	*/
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		1034
1099	/* Re did the following section of code - it looks like it had	1035	if (tmp->type == PLAYER && tmp != this)
1100	* lots of logic for things we no longer care about	1036	{
1101	*/	1037	/* If a container that the player is currently using somehow gets
1102		1038	* removed (most likely destroyed), update the player view
1103	/* link the object above us */	1039	* appropriately.
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	*/	1040	*/
1117	if(GET_MAP_OB(m,x,y)!=op) {	1041	if (tmp->container == this)
1118	dump_object(op);	1042	{
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);	1043	flag [FLAG_APPLIED] = 0;
1120	dump_object(GET_MAP_OB(m,x,y));	1044	tmp->container = 0;
1121	LOG(llevError,"%s\n",errmsg);	1045	}
		1046
		1047	if (tmp->contr->ns)
		1048	tmp->contr->ns->floorbox_update ();
		1049	}
		1050
		1051	/* See if player moving off should effect something */
		1052	if (check_walk_off
		1053	&& ((move_type & tmp->move_off)
		1054	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1055	{
		1056	move_apply (tmp, this, 0);
		1057
		1058	if (destroyed ())
		1059	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
		1060	}
		1061
		1062	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
		1063
		1064	if (tmp->above == tmp)
		1065	tmp->above = 0;
		1066
		1067	last = tmp;
1122	}	1068	}
1123	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */
1124	}
1125	op->above=NULL;
1126	op->below=NULL;
1127		1069
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
1135	* being removed.
1136	*/
1137
1138	if(tmp->type==PLAYER && tmp!=op) {
1139	/* If a container that the player is currently using somehow gets
1140	* removed (most likely destroyed), update the player view
1141	* appropriately.
1142	*/
1143	if (tmp->container==op) {
1144	CLEAR_FLAG(op, FLAG_APPLIED);
1145	tmp->container=NULL;
1146	}
1147	tmp->contr->socket.update_look=1;
1148	}
1149	/* See if player moving off should effect something */
1150	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1151	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1152
1153	move_apply(tmp, op, NULL);
1154	if (was_destroyed (op, tag)) {
1155	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1156	"leaving object\n", &tmp->name, &tmp->arch->name);
1157	}
1158	}
1159
1160	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1161
1162	if(tmp->above == tmp)
1163	tmp->above = NULL;
1164	last=tmp;
1165	}
1166	/* last == NULL of there are no objects on this space */	1070	/* last == NULL of there are no objects on this space */
1167	if (last==NULL) {	1071	if (!last)
1168	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1072	map->at (x, y).flags_ = P_NEED_UPDATE;
1169	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
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	1073	else
1177	update_object(last, UP_OBJ_REMOVE);	1074	update_object (last, UP_OBJ_REMOVE);
1178		1075
1179	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1076	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1180	update_all_los(op->map, op->x, op->y);	1077	update_all_los (map, x, y);
1181		1078	}
1182	}	1079	}
1183		1080
1184	/*	1081	/*
1185	* merge_ob(op,top):	1082	* merge_ob(op,top):
1186	*	1083	*
1187	* This function goes through all objects below and including top, and	1084	* This function goes through all objects below and including top, and
1188	* merges op to the first matching object.	1085	* merges op to the first matching object.
1189	* If top is NULL, it is calculated.	1086	* If top is NULL, it is calculated.
1190	* Returns pointer to object if it succeded in the merge, otherwise NULL	1087	* Returns pointer to object if it succeded in the merge, otherwise NULL
1191	*/	1088	*/
1192		1089	object *
1193	object *merge_ob(object *op, object *top) {	1090	merge_ob (object *op, object *top)
		1091	{
1194	if(!op->nrof)	1092	if (!op->nrof)
1195	return 0;	1093	return 0;
1196	if(top==NULL)	1094
		1095	if (top)
1197	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1096	for (top = op; top && top->above; top = top->above)
		1097	;
		1098
1198	for(;top!=NULL;top=top->below) {	1099	for (; top; top = top->below)
		1100	{
1199	if(top==op)	1101	if (top == op)
1200	continue;	1102	continue;
1201	if (CAN_MERGE(op,top))	1103
1202	{	1104	if (object::can_merge (op, top))
		1105	{
1203	top->nrof+=op->nrof;	1106	top->nrof += op->nrof;
		1107
1204	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1108	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1205	op->weight = 0; /* Don't want any adjustements now */	1109	op->weight = 0; /* Don't want any adjustements now */
1206	remove_ob(op);	1110	op->destroy ();
1207	free_object(op);
1208	return top;	1111	return top;
1209	}	1112	}
1210	}	1113	}
		1114
1211	return NULL;	1115	return 0;
1212	}	1116	}
1213		1117
1214	/*	1118	/*
1215	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1119	* same as insert_ob_in_map except it handle separate coordinates and do a clean
1216	* job preparing multi-part monsters	1120	* job preparing multi-part monsters
1217	*/	1121	*/
		1122	object *
1218	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1123	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1219	object* tmp;	1124	{
1220	if (op->head)	1125	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1221	op=op->head;	1126	{
1222	for (tmp=op;tmp;tmp=tmp->more){
1223	tmp->x=x+tmp->arch->clone.x;	1127	tmp->x = x + tmp->arch->clone.x;
1224	tmp->y=y+tmp->arch->clone.y;	1128	tmp->y = y + tmp->arch->clone.y;
1225	}	1129	}
		1130
1226	return insert_ob_in_map (op, m, originator, flag);	1131	return insert_ob_in_map (op, m, originator, flag);
1227	}	1132	}
1228		1133
1229	/*	1134	/*
1230	* insert_ob_in_map (op, map, originator, flag):	1135	* insert_ob_in_map (op, map, originator, flag):
1231	* This function inserts the object in the two-way linked list	1136	* This function inserts the object in the two-way linked list
…		…
1244	* Return value:	1149	* Return value:
1245	* new object if 'op' was merged with other object	1150	* new object if 'op' was merged with other object
1246	* NULL if 'op' was destroyed	1151	* NULL if 'op' was destroyed
1247	* just 'op' otherwise	1152	* just 'op' otherwise
1248	*/	1153	*/
1249		1154	object *
1250	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1155	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1251	{	1156	{
1252	object *tmp, *top, *floor=NULL;	1157	object *tmp, *top, *floor = NULL;
1253	sint16 x,y;	1158	sint16 x, y;
1254		1159
1255	if (QUERY_FLAG (op, FLAG_FREED)) {	1160	if (QUERY_FLAG (op, FLAG_FREED))
		1161	{
1256	LOG (llevError, "Trying to insert freed object!\n");	1162	LOG (llevError, "Trying to insert freed object!\n");
1257	return NULL;	1163	return NULL;
		1164	}
		1165
		1166	if (m == NULL)
1258	}	1167	{
1259	if(m==NULL) {
1260	dump_object(op);	1168	char *dump = dump_object (op);
1261	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);	1169	LOG (llevError, "Trying to insert in null-map!\n%s\n", dump);
		1170	free (dump);
1262	return op;	1171	return op;
1263	}	1172	}
		1173
1264	if(out_of_map(m,op->x,op->y)) {	1174	if (out_of_map (m, op->x, op->y))
		1175	{
1265	dump_object(op);	1176	char *dump = dump_object (op);
1266	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1177	LOG (llevError, "Trying to insert object outside the map.\n%s\n", dump);
1267	#ifdef MANY_CORES	1178	#ifdef MANY_CORES
1268	/* Better to catch this here, as otherwise the next use of this object	1179	/* 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	1180	* is likely to cause a crash. Better to find out where it is getting
1270	* improperly inserted.	1181	* improperly inserted.
1271	*/	1182	*/
1272	abort();	1183	abort ();
1273	#endif	1184	#endif
		1185	free (dump);
1274	return op;	1186	return op;
1275	}	1187	}
		1188
1276	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1189	if (!QUERY_FLAG (op, FLAG_REMOVED))
		1190	{
1277	dump_object(op);	1191	char *dump = dump_object (op);
1278	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);	1192	LOG (llevError, "Trying to insert (map) inserted object.\n%s\n", dump);
		1193	free (dump);
1279	return op;	1194	return op;
		1195	}
		1196
		1197	if (op->more)
1280	}	1198	{
1281	if(op->more!=NULL) {
1282	/* The part may be on a different map. */	1199	/* The part may be on a different map. */
1283		1200
1284	object *more = op->more;	1201	object *more = op->more;
1285		1202
1286	/* We really need the caller to normalize coordinates - if	1203	/* We really need the caller to normalize coordinates - if
1287	* we set the map, that doesn't work if the location is within	1204	* 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	1205	* a map and this is straddling an edge. So only if coordinate
1289	* is clear wrong do we normalize it.	1206	* is clear wrong do we normalize it.
1290	*/	1207	*/
1291	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1208	if (OUT_OF_REAL_MAP (more->map, more->x, more->y))
1292	more->map = get_map_from_coord(m, &more->x, &more->y);	1209	more->map = get_map_from_coord (m, &more->x, &more->y);
1293	} else if (!more->map) {	1210	else if (!more->map)
		1211	{
1294	/* For backwards compatibility - when not dealing with tiled maps,	1212	/* For backwards compatibility - when not dealing with tiled maps,
1295	* more->map should always point to the parent.	1213	* more->map should always point to the parent.
1296	*/	1214	*/
1297	more->map = m;	1215	more->map = m;
1298	}	1216	}
1299		1217
1300	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1218	if (insert_ob_in_map (more, more->map, originator, flag) == NULL)
		1219	{
1301	if ( ! op->head)	1220	if (!op->head)
1302	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1221	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
		1222
1303	return NULL;	1223	return 0;
1304	}	1224	}
1305	}	1225	}
		1226
1306	CLEAR_FLAG(op,FLAG_REMOVED);	1227	CLEAR_FLAG (op, FLAG_REMOVED);
1307		1228
1308	/* Ideally, the caller figures this out. However, it complicates a lot	1229	/* 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	1230	* of areas of callers (eg, anything that uses find_free_spot would now
1310	* need extra work	1231	* need extra work
1311	*/	1232	*/
1312	op->map=get_map_from_coord(m, &op->x, &op->y);	1233	op->map = get_map_from_coord (m, &op->x, &op->y);
1313	x = op->x;	1234	x = op->x;
1314	y = op->y;	1235	y = op->y;
1315		1236
1316	/* this has to be done after we translate the coordinates.	1237	/* this has to be done after we translate the coordinates.
1317	*/	1238	*/
1318	if(op->nrof && !(flag & INS_NO_MERGE)) {	1239	if (op->nrof && !(flag & INS_NO_MERGE))
1319	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1240	for (tmp = GET_MAP_OB (op->map, x, y); tmp != NULL; tmp = tmp->above)
1320	if (CAN_MERGE(op,tmp)) {	1241	if (object::can_merge (op, tmp))
		1242	{
1321	op->nrof+=tmp->nrof;	1243	op->nrof += tmp->nrof;
1322	remove_ob(tmp);	1244	tmp->destroy ();
1323	free_object(tmp);	1245	}
		1246
		1247	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1248	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1249
		1250	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1251	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1252
		1253	if (flag & INS_BELOW_ORIGINATOR)
		1254	{
		1255	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1256	{
		1257	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1258	abort ();
		1259	}
		1260
		1261	op->above = originator;
		1262	op->below = originator->below;
		1263
		1264	if (op->below)
		1265	op->below->above = op;
		1266	else
		1267	op->ms ().bot = op;
		1268
		1269	/* since *below* originator, no need to update top */
		1270	originator->below = op;
		1271	}
		1272	else
		1273	{
		1274	/* If there are other objects, then */
		1275	if ((!(flag & INS_MAP_LOAD)) && ((top = GET_MAP_OB (op->map, op->x, op->y)) != NULL))
		1276	{
		1277	object *last = NULL;
		1278
		1279	/*
		1280	* If there are multiple objects on this space, we do some trickier handling.
		1281	* We've already dealt with merging if appropriate.
		1282	* Generally, we want to put the new object on top. But if
		1283	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1284	* floor, we want to insert above that and no further.
		1285	* Also, if there are spell objects on this space, we stop processing
		1286	* once we get to them. This reduces the need to traverse over all of
		1287	* them when adding another one - this saves quite a bit of cpu time
		1288	* when lots of spells are cast in one area. Currently, it is presumed
		1289	* that flying non pickable objects are spell objects.
		1290	*/
		1291
		1292	while (top != NULL)
		1293	{
		1294	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1295	floor = top;
		1296
		1297	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1298	{
		1299	/* We insert above top, so we want this object below this */
		1300	top = top->below;
		1301	break;
		1302	}
		1303
		1304	last = top;
		1305	top = top->above;
1324	}	1306	}
1325	}
1326		1307
1327	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1308	/* Don't want top to be NULL, so set it to the last valid object */
1328	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1309	top = last;
1329	if (!QUERY_FLAG(op, FLAG_ALIVE))
1330	CLEAR_FLAG(op, FLAG_NO_STEAL);
1331		1310
1332	if (flag & INS_BELOW_ORIGINATOR) {	1311	/* We let update_position deal with figuring out what the space
1333	if (originator->map != op->map || originator->x != op->x ||	1312	* looks like instead of lots of conditions here.
1334	originator->y != op->y) {	1313	* 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");	1314	*/
1336	abort();	1315
		1316	/* Have object 'fall below' other objects that block view.
		1317	* Unless those objects are exits, type 66
		1318	* If INS_ON_TOP is used, don't do this processing
		1319	* Need to find the object that in fact blocks view, otherwise
		1320	* stacking is a bit odd.
		1321	*/
		1322	if (!(flag & INS_ON_TOP) &&
		1323	(get_map_flags (op->map, 0, op->x, op->y, 0, 0) & P_BLOCKSVIEW) && (op->face && !op->face->visibility))
		1324	{
		1325	for (last = top; last != floor; last = last->below)
		1326	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1327	break;
		1328	/* Check to see if we found the object that blocks view,
		1329	* and make sure we have a below pointer for it so that
		1330	* we can get inserted below this one, which requires we
		1331	* set top to the object below us.
		1332	*/
		1333	if (last && last->below && last != floor)
		1334	top = last->below;
		1335	}
		1336	} /* If objects on this space */
		1337
		1338	if (flag & INS_MAP_LOAD)
		1339	top = GET_MAP_TOP (op->map, op->x, op->y);
		1340
		1341	if (flag & INS_ABOVE_FLOOR_ONLY)
		1342	top = floor;
		1343
		1344	/* Top is the object that our object (op) is going to get inserted above.
		1345	*/
		1346
		1347	/* First object on this space */
		1348	if (!top)
		1349	{
		1350	op->above = GET_MAP_OB (op->map, op->x, op->y);
		1351
		1352	if (op->above)
		1353	op->above->below = op;
		1354
		1355	op->below = NULL;
		1356	op->ms ().bot = op;
1337	}	1357	}
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 {	1358	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	/*
1349	* If there are multiple objects on this space, we do some trickier handling.
1350	* We've already dealt with merging if appropriate.
1351	* Generally, we want to put the new object on top. But if
1352	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1353	* floor, we want to insert above that and no further.
1354	* Also, if there are spell objects on this space, we stop processing
1355	* once we get to them. This reduces the need to traverse over all of
1356	* them when adding another one - this saves quite a bit of cpu time
1357	* when lots of spells are cast in one area. Currently, it is presumed
1358	* that flying non pickable objects are spell objects.
1359	*/
1360
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;
1374	}
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 */
1402	if (flag & INS_MAP_LOAD)
1403	top = GET_MAP_TOP(op->map,op->x,op->y);
1404	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1405
1406	/* Top is the object that our object (op) is going to get inserted above.
1407	*/
1408
1409	/* First object on this space */
1410	if (!top) {
1411	op->above = GET_MAP_OB(op->map, op->x, op->y);
1412	if (op->above) op->above->below = op;
1413	op->below = NULL;
1414	SET_MAP_OB(op->map, op->x, op->y, op);
1415	} else { /* get inserted into the stack above top */	1359	{ /* get inserted into the stack above top */
1416	op->above = top->above;	1360	op->above = top->above;
		1361
		1362	if (op->above)
1417	if (op->above) op->above->below = op;	1363	op->above->below = op;
		1364
1418	op->below = top;	1365	op->below = top;
1419	top->above = op;	1366	top->above = op;
1420	}	1367	}
		1368
1421	if (op->above==NULL)	1369	if (op->above == NULL)
1422	SET_MAP_TOP(op->map,op->x, op->y, op);	1370	op->ms ().top = op;
1423	} /* else not INS_BELOW_ORIGINATOR */	1371	} /* else not INS_BELOW_ORIGINATOR */
1424		1372
1425	if(op->type==PLAYER)	1373	if (op->type == PLAYER)
1426	op->contr->do_los=1;	1374	op->contr->do_los = 1;
1427		1375
1428	/* If we have a floor, we know the player, if any, will be above	1376	/* 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.	1377	* it, so save a few ticks and start from there.
1430	*/	1378	*/
1431	if (!(flag & INS_MAP_LOAD))	1379	if (!(flag & INS_MAP_LOAD))
1432	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1380	if (object *pl = op->ms ().player ())
1433	if (tmp->type == PLAYER)	1381	if (pl->contr->ns)
1434	tmp->contr->socket.update_look=1;	1382	pl->contr->ns->floorbox_update ();
1435	}
1436		1383
1437	/* If this object glows, it may affect lighting conditions that are	1384	/* If this object glows, it may affect lighting conditions that are
1438	* visible to others on this map. But update_all_los is really	1385	* 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	1386	* 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	1387	* on the map will get recalculated. The players could very well
1441	* be far away from this change and not affected in any way -	1388	* be far away from this change and not affected in any way -
1442	* this should get redone to only look for players within range,	1389	* this should get redone to only look for players within range,
1443	* or just updating the P_NEED_UPDATE for spaces within this area	1390	* or just updating the P_NEED_UPDATE for spaces within this area
1444	* of effect may be sufficient.	1391	* of effect may be sufficient.
1445	*/	1392	*/
1446	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1393	if (op->map->darkness && (op->glow_radius != 0))
1447	update_all_los(op->map, op->x, op->y);	1394	update_all_los (op->map, op->x, op->y);
1448		1395
1449
1450	/* updates flags (blocked, alive, no magic, etc) for this map space */	1396	/* updates flags (blocked, alive, no magic, etc) for this map space */
1451	update_object(op,UP_OBJ_INSERT);	1397	update_object (op, UP_OBJ_INSERT);
1452		1398
		1399	INVOKE_OBJECT (INSERT, op);
1453		1400
1454	/* Don't know if moving this to the end will break anything. However,	1401	/* 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.	1402	* we want to have floorbox_update called before calling this.
1456	*	1403	*
1457	* check_move_on() must be after this because code called from	1404	* check_move_on() must be after this because code called from
1458	* check_move_on() depends on correct map flags (so functions like	1405	* check_move_on() depends on correct map flags (so functions like
1459	* blocked() and wall() work properly), and these flags are updated by	1406	* blocked() and wall() work properly), and these flags are updated by
1460	* update_object().	1407	* update_object().
1461	*/	1408	*/
1462		1409
1463	/* if this is not the head or flag has been passed, don't check walk on status */	1410	/* 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) {	1411	if (!(flag & INS_NO_WALK_ON) && !op->head)
		1412	{
1466	if (check_move_on(op, originator))	1413	if (check_move_on (op, originator))
1467	return NULL;	1414	return 0;
1468		1415
1469	/* If we are a multi part object, lets work our way through the check	1416	/* If we are a multi part object, lets work our way through the check
1470	* walk on's.	1417	* walk on's.
1471	*/	1418	*/
1472	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1419	for (tmp = op->more; tmp != NULL; tmp = tmp->more)
1473	if (check_move_on (tmp, originator))	1420	if (check_move_on (tmp, originator))
1474	return NULL;	1421	return 0;
1475	}	1422	}
		1423
1476	return op;	1424	return op;
1477	}	1425	}
1478		1426
1479	/* this function inserts an object in the map, but if it	1427	/* 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.	1428	* 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.	1429	* op is the object to insert it under: supplies x and the map.
1482	*/	1430	*/
		1431	void
1483	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1432	replace_insert_ob_in_map (const char *arch_string, object *op)
1484	object *tmp;	1433	{
1485	object *tmp1;	1434	object *tmp, *tmp1;
1486		1435
1487	/* first search for itself and remove any old instances */	1436	/* first search for itself and remove any old instances */
1488		1437
1489	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1438	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp != NULL; tmp = tmp->above)
1490	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1439	if (!strcmp (tmp->arch->name, arch_string)) /* same archetype */
1491	remove_ob(tmp);	1440	tmp->destroy ();
1492	free_object(tmp);
1493	}
1494	}
1495		1441
1496	tmp1=arch_to_object(find_archetype(arch_string));	1442	tmp1 = arch_to_object (archetype::find (arch_string));
1497		1443
1498		1444	tmp1->x = op->x;
1499	tmp1->x = op->x; tmp1->y = op->y;	1445	tmp1->y = op->y;
1500	insert_ob_in_map(tmp1,op->map,op,0);	1446	insert_ob_in_map (tmp1, op->map, op, 0);
1501	}	1447	}
		1448
		1449	object *
		1450	object::insert_at (object *where, object *originator, int flags)
		1451	{
		1452	where->map->insert (this, where->x, where->y, originator, flags);
		1453	}
1502		1454
1503	/*	1455	/*
1504	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1456	* 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	1457	* is returned contains nr objects, and the remaining parts contains
1506	* the rest (or is removed and freed if that number is 0).	1458	* the rest (or is removed and freed if that number is 0).
1507	* On failure, NULL is returned, and the reason put into the	1459	* On failure, NULL is returned, and the reason put into the
1508	* global static errmsg array.	1460	* global static errmsg array.
1509	*/	1461	*/
1510		1462	object *
1511	object *get_split_ob(object *orig_ob, uint32 nr) {	1463	get_split_ob (object *orig_ob, uint32 nr)
		1464	{
1512	object *newob;	1465	object *newob;
1513	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1466	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1514		1467
1515	if(orig_ob->nrof<nr) {	1468	if (orig_ob->nrof < nr)
1516	sprintf(errmsg,"There are only %d %ss.",	1469	{
1517	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1470	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1518	return NULL;	1471	return NULL;
1519	}	1472	}
		1473
1520	newob = object_create_clone(orig_ob);	1474	newob = object_create_clone (orig_ob);
		1475
1521	if((orig_ob->nrof-=nr)<1) {	1476	if ((orig_ob->nrof -= nr) < 1)
1522	if ( ! is_removed)	1477	orig_ob->destroy (1);
1523	remove_ob(orig_ob);
1524	free_object2(orig_ob, 1);
1525	}
1526	else if ( ! is_removed) {	1478	else if (!is_removed)
		1479	{
1527	if(orig_ob->env!=NULL)	1480	if (orig_ob->env != NULL)
1528	sub_weight (orig_ob->env,orig_ob->weight*nr);	1481	sub_weight (orig_ob->env, orig_ob->weight * nr);
1529	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1482	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1483	{
1530	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1484	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");	1485	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1533	return NULL;	1486	return NULL;
1534	}	1487	}
1535	}	1488	}
		1489
1536	newob->nrof=nr;	1490	newob->nrof = nr;
1537		1491
1538	return newob;	1492	return newob;
1539	}	1493	}
1540		1494
1541	/*	1495	/*
1542	* decrease_ob_nr(object, number) decreases a specified number from	1496	* decrease_ob_nr(object, number) decreases a specified number from
1543	* the amount of an object. If the amount reaches 0, the object	1497	* the amount of an object. If the amount reaches 0, the object
1544	* is subsequently removed and freed.	1498	* is subsequently removed and freed.
1545	*	1499	*
1546	* Return value: 'op' if something is left, NULL if the amount reached 0	1500	* Return value: 'op' if something is left, NULL if the amount reached 0
1547	*/	1501	*/
1548		1502
		1503	object *
1549	object *decrease_ob_nr (object *op, uint32 i)	1504	decrease_ob_nr (object *op, uint32 i)
1550	{	1505	{
1551	object *tmp;	1506	object *tmp;
1552	player *pl;
1553		1507
1554	if (i == 0) /* objects with op->nrof require this check */	1508	if (i == 0) /* objects with op->nrof require this check */
1555	return op;	1509	return op;
1556		1510
1557	if (i > op->nrof)	1511	if (i > op->nrof)
1558	i = op->nrof;	1512	i = op->nrof;
1559		1513
1560	if (QUERY_FLAG (op, FLAG_REMOVED))	1514	if (QUERY_FLAG (op, FLAG_REMOVED))
		1515	op->nrof -= i;
		1516	else if (op->env)
		1517	{
		1518	/* is this object in the players inventory, or sub container
		1519	* therein?
		1520	*/
		1521	tmp = op->in_player ();
		1522	/* nope. Is this a container the player has opened?
		1523	* If so, set tmp to that player.
		1524	* IMO, searching through all the players will mostly
		1525	* likely be quicker than following op->env to the map,
		1526	* and then searching the map for a player.
		1527	*/
		1528	if (!tmp)
		1529	for_all_players (pl)
		1530	if (pl->ob->container == op->env)
		1531	{
		1532	tmp = pl->ob;
		1533	break;
		1534	}
		1535
		1536	if (i < op->nrof)
		1537	{
		1538	sub_weight (op->env, op->weight * i);
		1539	op->nrof -= i;
		1540	if (tmp)
		1541	esrv_send_item (tmp, op);
		1542	}
		1543	else
		1544	{
		1545	op->remove ();
		1546	op->nrof = 0;
		1547	if (tmp)
		1548	esrv_del_item (tmp->contr, op->count);
		1549	}
1561	{	1550	}
		1551	else
		1552	{
		1553	object *above = op->above;
		1554
		1555	if (i < op->nrof)
1562	op->nrof -= i;	1556	op->nrof -= i;
1563	}	1557	else
1564	else if (op->env != NULL)
1565	{
1566	/* is this object in the players inventory, or sub container
1567	* therein?
1568	*/	1558	{
1569	tmp = is_player_inv (op->env);	1559	op->remove ();
1570	/* nope. Is this a container the player has opened?	1560	op->nrof = 0;
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	}	1561	}
1582		1562
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);
1591	op->nrof = 0;
1592	if (tmp) {
1593	esrv_del_item(tmp->contr, op->count);
1594	}
1595	}
1596	}
1597	else
1598	{
1599	object *above = op->above;
1600
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 */	1563	/* Since we just removed op, op->above is null */
1608	for (tmp = above; tmp != NULL; tmp = tmp->above)	1564	for (tmp = above; tmp; tmp = tmp->above)
1609	if (tmp->type == PLAYER) {	1565	if (tmp->type == PLAYER)
		1566	{
1610	if (op->nrof)	1567	if (op->nrof)
1611	esrv_send_item(tmp, op);	1568	esrv_send_item (tmp, op);
1612	else	1569	else
1613	esrv_del_item(tmp->contr, op->count);	1570	esrv_del_item (tmp->contr, op->count);
1614	}	1571	}
1615	}	1572	}
1616		1573
1617	if (op->nrof) {	1574	if (op->nrof)
1618	return op;	1575	return op;
1619	} else {	1576	else
1620	free_object (op);	1577	{
		1578	op->destroy ();
1621	return NULL;	1579	return 0;
1622	}	1580	}
1623	}	1581	}
1624		1582
1625	/*	1583	/*
1626	* add_weight(object, weight) adds the specified weight to an object,	1584	* add_weight(object, weight) adds the specified weight to an object,
1627	* and also updates how much the environment(s) is/are carrying.	1585	* and also updates how much the environment(s) is/are carrying.
1628	*/	1586	*/
1629		1587
		1588	void
1630	void add_weight (object *op, signed long weight) {	1589	add_weight (object *op, signed long weight)
		1590	{
1631	while (op!=NULL) {	1591	while (op != NULL)
		1592	{
1632	if (op->type == CONTAINER) {	1593	if (op->type == CONTAINER)
1633	weight=(signed long)(weight*(100-op->stats.Str)/100);	1594	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1634	}	1595
1635	op->carrying+=weight;	1596	op->carrying += weight;
1636	op=op->env;	1597	op = op->env;
1637	}	1598	}
1638	}	1599	}
1639		1600
		1601	object *
		1602	insert_ob_in_ob (object *op, object *where)
		1603	{
		1604	if (!where)
		1605	{
		1606	char *dump = dump_object (op);
		1607	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1608	free (dump);
		1609	return op;
		1610	}
		1611
		1612	if (where->head)
		1613	{
		1614	LOG (llevDebug, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1615	where = where->head;
		1616	}
		1617
		1618	return where->insert (op);
		1619	}
		1620
1640	/*	1621	/*
1641	* insert_ob_in_ob(op,environment):	1622	* env->insert (op)
1642	* This function inserts the object op in the linked list	1623	* This function inserts the object op in the linked list
1643	* inside the object environment.	1624	* inside the object environment.
1644	*	1625	*
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	1626	* The function returns now pointer to inserted item, and return value can
1651	* be != op, if items are merged. -Tero	1627	* be != op, if items are merged. -Tero
1652	*/	1628	*/
1653		1629
1654	object *insert_ob_in_ob(object *op,object *where) {	1630	object *
		1631	object::insert (object *op)
		1632	{
1655	object *tmp, *otmp;	1633	object *tmp, *otmp;
1656		1634
1657	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1635	if (!QUERY_FLAG (op, FLAG_REMOVED))
1658	dump_object(op);	1636	op->remove ();
1659	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1637
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) {	1638	if (op->more)
		1639	{
1673	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1640	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1674	&op->name, op->count);
1675	return op;	1641	return op;
1676	}	1642	}
		1643
1677	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1644	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1678	CLEAR_FLAG(op, FLAG_REMOVED);	1645	CLEAR_FLAG (op, FLAG_REMOVED);
1679	if(op->nrof) {	1646	if (op->nrof)
		1647	{
1680	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1648	for (tmp = inv; tmp != NULL; tmp = tmp->below)
1681	if ( CAN_MERGE(tmp,op) ) {	1649	if (object::can_merge (tmp, op))
		1650	{
1682	/* return the original object and remove inserted object	1651	/* return the original object and remove inserted object
1683	(client needs the original object) */	1652	(client needs the original object) */
1684	tmp->nrof += op->nrof;	1653	tmp->nrof += op->nrof;
1685	/* Weight handling gets pretty funky. Since we are adding to	1654	/* Weight handling gets pretty funky. Since we are adding to
1686	* tmp->nrof, we need to increase the weight.	1655	* tmp->nrof, we need to increase the weight.
1687	*/	1656	*/
1688	add_weight (where, op->weight*op->nrof);	1657	add_weight (this, op->weight * op->nrof);
1689	SET_FLAG(op, FLAG_REMOVED);	1658	SET_FLAG (op, FLAG_REMOVED);
1690	free_object(op); /* free the inserted object */	1659	op->destroy (); /* free the inserted object */
1691	op = tmp;	1660	op = tmp;
1692	remove_ob (op); /* and fix old object's links */	1661	op->remove (); /* and fix old object's links */
1693	CLEAR_FLAG(op, FLAG_REMOVED);	1662	CLEAR_FLAG (op, FLAG_REMOVED);
1694	break;	1663	break;
1695	}	1664	}
1696		1665
1697	/* I assume combined objects have no inventory	1666	/* I assume combined objects have no inventory
1698	* We add the weight - this object could have just been removed	1667	* We add the weight - this object could have just been removed
1699	* (if it was possible to merge). calling remove_ob will subtract	1668	* (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	1669	* the weight, so we need to add it in again, since we actually do
1701	* the linking below	1670	* the linking below
1702	*/	1671	*/
1703	add_weight (where, op->weight*op->nrof);	1672	add_weight (this, op->weight * op->nrof);
		1673	}
1704	} else	1674	else
1705	add_weight (where, (op->weight+op->carrying));	1675	add_weight (this, (op->weight + op->carrying));
1706		1676
1707	otmp=is_player_inv(where);	1677	otmp = this->in_player ();
1708	if (otmp&&otmp->contr!=NULL) {	1678	if (otmp && otmp->contr)
1709	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1679	if (!QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1710	fix_player(otmp);	1680	otmp->update_stats ();
1711	}
1712		1681
1713	op->map=NULL;	1682	op->map = 0;
1714	op->env=where;	1683	op->env = this;
1715	op->above=NULL;	1684	op->above = 0;
1716	op->below=NULL;	1685	op->below = 0;
1717	op->x=0,op->y=0;	1686	op->x = 0, op->y = 0;
1718		1687
1719	/* reset the light list and los of the players on the map */	1688	/* reset the light list and los of the players on the map */
1720	if((op->glow_radius!=0)&&where->map)	1689	if ((op->glow_radius != 0) && map)
1721	{	1690	{
1722	#ifdef DEBUG_LIGHTS	1691	#ifdef DEBUG_LIGHTS
1723	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1692	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1724	op->name);
1725	#endif /* DEBUG_LIGHTS */	1693	#endif /* DEBUG_LIGHTS */
1726	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1694	if (map->darkness)
		1695	update_all_los (map, x, y);
1727	}	1696	}
1728		1697
1729	/* Client has no idea of ordering so lets not bother ordering it here.	1698	/* Client has no idea of ordering so lets not bother ordering it here.
1730	* It sure simplifies this function...	1699	* It sure simplifies this function...
1731	*/	1700	*/
1732	if (where->inv==NULL)	1701	if (!inv)
1733	where->inv=op;	1702	inv = op;
1734	else {	1703	else
		1704	{
1735	op->below = where->inv;	1705	op->below = inv;
1736	op->below->above = op;	1706	op->below->above = op;
1737	where->inv = op;	1707	inv = op;
1738	}	1708	}
		1709
		1710	INVOKE_OBJECT (INSERT, this);
		1711
1739	return op;	1712	return op;
1740	}	1713	}
1741		1714
1742	/*	1715	/*
1743	* Checks if any objects has a move_type that matches objects	1716	* Checks if any objects has a move_type that matches objects
…		…
1757	*	1730	*
1758	* MSW 2001-07-08: Check all objects on space, not just those below	1731	* 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	1732	* object being inserted. insert_ob_in_map may not put new objects
1760	* on top.	1733	* on top.
1761	*/	1734	*/
1762		1735	int
1763	int check_move_on (object *op, object *originator)	1736	check_move_on (object *op, object *originator)
1764	{	1737	{
1765	object *tmp;	1738	object *tmp;
1766	tag_t tag;
1767	mapstruct *m=op->map;	1739	maptile *m = op->map;
1768	int x=op->x, y=op->y;	1740	int x = op->x, y = op->y;
		1741
1769	MoveType move_on, move_slow, move_block;	1742	MoveType move_on, move_slow, move_block;
1770		1743
1771	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1744	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1772	return 0;	1745	return 0;
1773		1746
1774	tag = op->count;
1775
1776	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1747	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);	1748	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);	1749	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1779		1750
1780	/* if nothing on this space will slow op down or be applied,	1751	/* 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	1752	* 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	1753	* is set, as lots of objects don't have it set - we treat that
1783	* as walking.	1754	* as walking.
1784	*/	1755	*/
1785	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1756	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1786	return 0;	1757	return 0;
1787		1758
1788	/* This is basically inverse logic of that below - basically,	1759	/* This is basically inverse logic of that below - basically,
1789	* if the object can avoid the move on or slow move, they do so,	1760	* 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	1761	* but can't do it if the alternate movement they are using is
1791	* blocked. Logic on this seems confusing, but does seem correct.	1762	* blocked. Logic on this seems confusing, but does seem correct.
1792	*/	1763	*/
1793	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1764	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;	1765	return 0;
1795		1766
1796	/* The objects have to be checked from top to bottom.	1767	/* The objects have to be checked from top to bottom.
1797	* Hence, we first go to the top:	1768	* Hence, we first go to the top:
1798	*/	1769	*/
1799		1770
1800	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1771	for (tmp = GET_MAP_OB (op->map, op->x, op->y); tmp && tmp->above; tmp = tmp->above)
1801	tmp->above!=NULL; tmp=tmp->above) {	1772	{
1802	/* Trim the search when we find the first other spell effect	1773	/* Trim the search when we find the first other spell effect
1803	* this helps performance so that if a space has 50 spell objects,	1774	* this helps performance so that if a space has 50 spell objects,
1804	* we don't need to check all of them.	1775	* we don't need to check all of them.
1805	*/	1776	*/
1806	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1777	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1778	break;
		1779	}
		1780
		1781	for (; tmp; tmp = tmp->below)
1807	}	1782	{
1808	for(;tmp!=NULL; tmp=tmp->below) {	1783	if (tmp == op)
1809	if (tmp == op) continue; /* Can't apply yourself */	1784	continue; /* Can't apply yourself */
1810		1785
1811	/* Check to see if one of the movement types should be slowed down.	1786	/* 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	1787	* Second check makes sure that the movement types not being slowed
1813	* (~slow_move) is not blocked on this space - just because the	1788	* (~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	1789	* 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.	1790	* swim on that space, can't use it to avoid the penalty.
1816	*/	1791	*/
1817	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1792	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1793	{
1818	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1794	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)) {	1795	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1796	{
1821		1797
1822	float diff;	1798	float
1823
1824	diff = tmp->move_slow_penalty*FABS(op->speed);	1799	diff = tmp->move_slow_penalty * FABS (op->speed);
		1800
1825	if (op->type == PLAYER) {	1801	if (op->type == PLAYER)
1826	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1802	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))) {	1803	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1828	diff /= 4.0;	1804	diff /= 4.0;
1829	}	1805
1830	}
1831	op->speed_left -= diff;	1806	op->speed_left -= diff;
1832	}	1807	}
1833	}	1808	}
1834		1809
1835	/* Basically same logic as above, except now for actual apply. */	1810	/* Basically same logic as above, except now for actual apply. */
1836	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1811	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)) {	1812	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1839		1813	{
1840	move_apply(tmp, op, originator);	1814	move_apply (tmp, op, originator);
		1815
1841	if (was_destroyed (op, tag))	1816	if (op->destroyed ())
1842	return 1;	1817	return 1;
1843		1818
1844	/* what the person/creature stepped onto has moved the object	1819	/* what the person/creature stepped onto has moved the object
1845	* someplace new. Don't process any further - if we did,	1820	* someplace new. Don't process any further - if we did,
1846	* have a feeling strange problems would result.	1821	* have a feeling strange problems would result.
1847	*/	1822	*/
1848	if (op->map != m || op->x != x || op->y != y) return 0;	1823	if (op->map != m || op->x != x || op->y != y)
		1824	return 0;
1849	}	1825	}
1850	}	1826	}
		1827
1851	return 0;	1828	return 0;
1852	}	1829	}
1853		1830
1854	/*	1831	/*
1855	* present_arch(arch, map, x, y) searches for any objects with	1832	* present_arch(arch, map, x, y) searches for any objects with
1856	* a matching archetype at the given map and coordinates.	1833	* a matching archetype at the given map and coordinates.
1857	* The first matching object is returned, or NULL if none.	1834	* The first matching object is returned, or NULL if none.
1858	*/	1835	*/
1859		1836	object *
1860	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1837	present_arch (const archetype *at, maptile *m, int x, int y)
1861	object *tmp;	1838	{
1862	if(m==NULL || out_of_map(m,x,y)) {	1839	if (m == NULL || out_of_map (m, x, y))
		1840	{
1863	LOG(llevError,"Present_arch called outside map.\n");	1841	LOG (llevError, "Present_arch called outside map.\n");
1864	return NULL;	1842	return NULL;
1865	}	1843	}
		1844
1866	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1845	for (object *tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1867	if(tmp->arch == at)	1846	if (tmp->arch == at)
1868	return tmp;	1847	return tmp;
		1848
1869	return NULL;	1849	return NULL;
1870	}	1850	}
1871		1851
1872	/*	1852	/*
1873	* present(type, map, x, y) searches for any objects with	1853	* present(type, map, x, y) searches for any objects with
1874	* a matching type variable at the given map and coordinates.	1854	* a matching type variable at the given map and coordinates.
1875	* The first matching object is returned, or NULL if none.	1855	* The first matching object is returned, or NULL if none.
1876	*/	1856	*/
1877		1857	object *
1878	object *present(unsigned char type,mapstruct *m, int x,int y) {	1858	present (unsigned char type, maptile *m, int x, int y)
1879	object *tmp;	1859	{
1880	if(out_of_map(m,x,y)) {	1860	if (out_of_map (m, x, y))
		1861	{
1881	LOG(llevError,"Present called outside map.\n");	1862	LOG (llevError, "Present called outside map.\n");
1882	return NULL;	1863	return NULL;
1883	}	1864	}
		1865
1884	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1866	for (object *tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
1885	if(tmp->type==type)	1867	if (tmp->type == type)
1886	return tmp;	1868	return tmp;
		1869
1887	return NULL;	1870	return NULL;
1888	}	1871	}
1889		1872
1890	/*	1873	/*
1891	* present_in_ob(type, object) searches for any objects with	1874	* present_in_ob(type, object) searches for any objects with
1892	* a matching type variable in the inventory of the given object.	1875	* a matching type variable in the inventory of the given object.
1893	* The first matching object is returned, or NULL if none.	1876	* The first matching object is returned, or NULL if none.
1894	*/	1877	*/
1895		1878	object *
1896	object *present_in_ob(unsigned char type, const object *op) {	1879	present_in_ob (unsigned char type, const object *op)
1897	object *tmp;	1880	{
1898	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1881	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1899	if(tmp->type==type)	1882	if (tmp->type == type)
1900	return tmp;	1883	return tmp;
		1884
1901	return NULL;	1885	return NULL;
1902	}	1886	}
1903		1887
1904	/*	1888	/*
1905	* present_in_ob (type, str, object) searches for any objects with	1889	* present_in_ob (type, str, object) searches for any objects with
…		…
1913	* str is the string to match against. Note that we match against	1897	* 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	1898	* 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	1899	* spell code can use one object type (force), but change it's name
1916	* to be unique.	1900	* to be unique.
1917	*/	1901	*/
1918		1902	object *
1919	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1903	present_in_ob_by_name (int type, const char *str, const object *op)
1920	object *tmp;	1904	{
1921
1922	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1905	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1923	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1906	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1924	return tmp;	1907	return tmp;
1925	}	1908
1926	return NULL;	1909	return 0;
1927	}	1910	}
1928		1911
1929	/*	1912	/*
1930	* present_arch_in_ob(archetype, object) searches for any objects with	1913	* present_arch_in_ob(archetype, object) searches for any objects with
1931	* a matching archetype in the inventory of the given object.	1914	* a matching archetype in the inventory of the given object.
1932	* The first matching object is returned, or NULL if none.	1915	* The first matching object is returned, or NULL if none.
1933	*/	1916	*/
1934		1917	object *
1935	object *present_arch_in_ob(const archetype *at, const object *op) {	1918	present_arch_in_ob (const archetype *at, const object *op)
1936	object *tmp;	1919	{
1937	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1920	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1938	if( tmp->arch == at)	1921	if (tmp->arch == at)
1939	return tmp;	1922	return tmp;
		1923
1940	return NULL;	1924	return NULL;
1941	}	1925	}
1942		1926
1943	/*	1927	/*
1944	* activate recursively a flag on an object inventory	1928	* activate recursively a flag on an object inventory
1945	*/	1929	*/
		1930	void
1946	void flag_inv(object*op, int flag){	1931	flag_inv (object *op, int flag)
1947	object *tmp;	1932	{
1948	if(op->inv)	1933	if (op->inv)
1949	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1934	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1935	{
1950	SET_FLAG(tmp, flag);	1936	SET_FLAG (tmp, flag);
1951	flag_inv(tmp,flag);	1937	flag_inv (tmp, flag);
1952	}	1938	}
		1939	}
		1940
1953	}/*	1941	/*
1954	* desactivate recursively a flag on an object inventory	1942	* deactivate recursively a flag on an object inventory
1955	*/	1943	*/
		1944	void
1956	void unflag_inv(object*op, int flag){	1945	unflag_inv (object *op, int flag)
1957	object *tmp;	1946	{
1958	if(op->inv)	1947	if (op->inv)
1959	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1948	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1949	{
1960	CLEAR_FLAG(tmp, flag);	1950	CLEAR_FLAG (tmp, flag);
1961	unflag_inv(tmp,flag);	1951	unflag_inv (tmp, flag);
1962	}	1952	}
1963	}	1953	}
1964		1954
1965	/*	1955	/*
1966	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in	1956	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1967	* all it's inventory (recursively).	1957	* all it's inventory (recursively).
1968	* If checksums are used, a player will get set_cheat called for	1958	* 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.	1959	* him/her-self and all object carried by a call to this function.
1970	*/	1960	*/
1971		1961	void
1972	void set_cheat(object *op) {	1962	set_cheat (object *op)
		1963	{
1973	SET_FLAG(op, FLAG_WAS_WIZ);	1964	SET_FLAG (op, FLAG_WAS_WIZ);
1974	flag_inv(op, FLAG_WAS_WIZ);	1965	flag_inv (op, FLAG_WAS_WIZ);
1975	}	1966	}
1976		1967
1977	/*	1968	/*
1978	* find_free_spot(object, map, x, y, start, stop) will search for	1969	* 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	1970	* 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	1984	* 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	1985	* 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	1986	* the archetype because that isn't correct if the monster has been
1996	* customized, changed states, etc.	1987	* customized, changed states, etc.
1997	*/	1988	*/
1998		1989	int
1999	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1990	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1991	{
2000	int i,index=0, flag;	1992	int index = 0, flag;
2001	static int altern[SIZEOFFREE];	1993	int altern[SIZEOFFREE];
2002		1994
2003	for(i=start;i<stop;i++) {	1995	for (int i = start; i < stop; i++)
		1996	{
2004	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1997	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2005	if(!flag)	1998	if (!flag)
2006	altern[index++]=i;	1999	altern [index++] = i;
2007		2000
2008	/* Basically, if we find a wall on a space, we cut down the search size.	2001	/* 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.	2002	* 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 -	2003	* 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	2004	* 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	2005	* spaces in all the other directions, this will reduce the search space
2013	* to only the spaces immediately surrounding the target area, and	2006	* to only the spaces immediately surrounding the target area, and
2014	* won't look 2 spaces south of the target space.	2007	* won't look 2 spaces south of the target space.
2015	*/	2008	*/
2016	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2009	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2017	stop=maxfree[i];	2010	stop = maxfree[i];
2018	}	2011	}
2019	if(!index) return -1;	2012
		2013	if (!index)
		2014	return -1;
		2015
2020	return altern[RANDOM()%index];	2016	return altern[RANDOM () % index];
2021	}	2017	}
2022		2018
2023	/*	2019	/*
2024	* find_first_free_spot(archetype, mapstruct, x, y) works like	2020	* find_first_free_spot(archetype, maptile, x, y) works like
2025	* find_free_spot(), but it will search max number of squares.	2021	* find_free_spot(), but it will search max number of squares.
2026	* But it will return the first available spot, not a random choice.	2022	* 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.	2023	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2028	*/	2024	*/
2029		2025	int
2030	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2026	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2031	int i;	2027	{
2032	for(i=0;i<SIZEOFFREE;i++) {	2028	for (int i = 0; i < SIZEOFFREE; i++)
2033	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2029	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2034	return i;	2030	return i;
2035	}	2031
2036	return -1;	2032	return -1;
2037	}	2033	}
2038		2034
2039	/*	2035	/*
2040	* The function permute(arr, begin, end) randomly reorders the array	2036	* The function permute(arr, begin, end) randomly reorders the array
2041	* arr[begin..end-1].	2037	* arr[begin..end-1].
		2038	* now uses a fisher-yates shuffle, old permute was broken
2042	*/	2039	*/
		2040	static void
2043	static void permute(int *arr, int begin, int end)	2041	permute (int *arr, int begin, int end)
2044	{	2042	{
2045	int i, j, tmp, len;	2043	arr += begin;
		2044	end -= begin;
2046		2045
2047	len = end-begin;	2046	while (--end)
2048	for(i = begin; i < end; i++)	2047	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	}	2048	}
2057		2049
2058	/* new function to make monster searching more efficient, and effective!	2050	/* new function to make monster searching more efficient, and effective!
2059	* This basically returns a randomized array (in the passed pointer) of	2051	* 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	2052	* 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	2053	* 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	2054	* 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.	2055	* the 3x3 area will be searched, just not in a predictable order.
2064	*/	2056	*/
		2057	void
2065	void get_search_arr(int *search_arr)	2058	get_search_arr (int *search_arr)
2066	{	2059	{
2067	int i;	2060	int i;
2068		2061
2069	for(i = 0; i < SIZEOFFREE; i++)	2062	for (i = 0; i < SIZEOFFREE; i++)
2070	{
2071	search_arr[i] = i;	2063	search_arr[i] = i;
2072	}
2073		2064
2074	permute(search_arr, 1, SIZEOFFREE1+1);	2065	permute (search_arr, 1, SIZEOFFREE1 + 1);
2075	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2066	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2076	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2067	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2077	}	2068	}
2078		2069
2079	/*	2070	/*
2080	* find_dir(map, x, y, exclude) will search some close squares in the	2071	* find_dir(map, x, y, exclude) will search some close squares in the
2081	* given map at the given coordinates for live objects.	2072	* given map at the given coordinates for live objects.
…		…
2086	* Perhaps incorrectly, but I'm making the assumption that exclude	2077	* 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	2078	* 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	2079	* because we have to know what movement the thing looking to move
2089	* there is capable of.	2080	* there is capable of.
2090	*/	2081	*/
2091		2082	int
2092	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2083	find_dir (maptile *m, int x, int y, object *exclude)
		2084	{
2093	int i,max=SIZEOFFREE, mflags;	2085	int i, max = SIZEOFFREE, mflags;
		2086
2094	sint16 nx, ny;	2087	sint16 nx, ny;
2095	object *tmp;	2088	object *tmp;
2096	mapstruct *mp;	2089	maptile *mp;
		2090
2097	MoveType blocked, move_type;	2091	MoveType blocked, move_type;
2098		2092
2099	if (exclude && exclude->head) {	2093	if (exclude && exclude->head)
		2094	{
2100	exclude = exclude->head;	2095	exclude = exclude->head;
2101	move_type = exclude->move_type;	2096	move_type = exclude->move_type;
2102	} else {	2097	}
		2098	else
		2099	{
2103	/* If we don't have anything, presume it can use all movement types. */	2100	/* If we don't have anything, presume it can use all movement types. */
2104	move_type=MOVE_ALL;	2101	move_type = MOVE_ALL;
		2102	}
		2103
		2104	for (i = 1; i < max; i++)
2105	}	2105	{
2106
2107	for(i=1;i<max;i++) {
2108	mp = m;	2106	mp = m;
2109	nx = x + freearr_x[i];	2107	nx = x + freearr_x[i];
2110	ny = y + freearr_y[i];	2108	ny = y + freearr_y[i];
2111		2109
2112	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2110	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2111
2113	if (mflags & P_OUT_OF_MAP) {	2112	if (mflags & P_OUT_OF_MAP)
		2113	max = maxfree[i];
		2114	else
		2115	{
		2116	mapspace &ms = mp->at (nx, ny);
		2117
		2118	blocked = ms.move_block;
		2119
		2120	if ((move_type & blocked) == move_type)
2114	max = maxfree[i];	2121	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) {	2122	else if (mflags & P_IS_ALIVE)
2121	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2123	{
		2124	for (tmp = ms.bot; tmp; tmp = tmp->above)
2122	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2125	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2123	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2126	&& (tmp != exclude || (tmp->head && tmp->head != exclude)))
2124	break;	2127	break;
2125	}	2128
2126	}
2127	if(tmp) {	2129	if (tmp)
2128	return freedir[i];	2130	return freedir[i];
2129	}
2130	}	2131	}
2131	}	2132	}
2132	}	2133	}
		2134
2133	return 0;	2135	return 0;
2134	}	2136	}
2135		2137
2136	/*	2138	/*
2137	* distance(object 1, object 2) will return the square of the	2139	* distance(object 1, object 2) will return the square of the
2138	* distance between the two given objects.	2140	* distance between the two given objects.
2139	*/	2141	*/
2140		2142	int
2141	int distance(const object *ob1, const object *ob2) {	2143	distance (const object *ob1, const object *ob2)
2142	int i;	2144	{
2143	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2145	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	}	2146	}
2147		2147
2148	/*	2148	/*
2149	* find_dir_2(delta-x,delta-y) will return a direction in which	2149	* 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	2150	* an object which has subtracted the x and y coordinates of another
2151	* object, needs to travel toward it.	2151	* object, needs to travel toward it.
2152	*/	2152	*/
2153		2153	int
2154	int find_dir_2(int x, int y) {	2154	find_dir_2 (int x, int y)
		2155	{
2155	int q;	2156	int q;
2156		2157
2157	if(y)	2158	if (y)
2158	q=x*100/y;	2159	q = x * 100 / y;
2159	else if (x)	2160	else if (x)
2160	q= -300*x;	2161	q = -300 * x;
2161	else	2162	else
2162	return 0;	2163	return 0;
2163		2164
2164	if(y>0) {	2165	if (y > 0)
		2166	{
2165	if(q < -242)	2167	if (q < -242)
2166	return 3 ;	2168	return 3;
2167	if (q < -41)	2169	if (q < -41)
2168	return 2 ;	2170	return 2;
2169	if (q < 41)	2171	if (q < 41)
2170	return 1 ;	2172	return 1;
2171	if (q < 242)	2173	if (q < 242)
2172	return 8 ;	2174	return 8;
2173	return 7 ;	2175	return 7;
2174	}	2176	}
2175		2177
2176	if (q < -242)	2178	if (q < -242)
2177	return 7 ;	2179	return 7;
2178	if (q < -41)	2180	if (q < -41)
2179	return 6 ;	2181	return 6;
2180	if (q < 41)	2182	if (q < 41)
2181	return 5 ;	2183	return 5;
2182	if (q < 242)	2184	if (q < 242)
2183	return 4 ;	2185	return 4;
2184		2186
2185	return 3 ;	2187	return 3;
2186	}	2188	}
2187		2189
2188	/*	2190	/*
2189	* absdir(int): Returns a number between 1 and 8, which represent	2191	* absdir(int): Returns a number between 1 and 8, which represent
2190	* the "absolute" direction of a number (it actually takes care of	2192	* the "absolute" direction of a number (it actually takes care of
2191	* "overflow" in previous calculations of a direction).	2193	* "overflow" in previous calculations of a direction).
2192	*/	2194	*/
2193		2195
		2196	int
2194	int absdir(int d) {	2197	absdir (int d)
2195	while(d<1) d+=8;	2198	{
2196	while(d>8) d-=8;	2199	while (d < 1)
		2200	d += 8;
		2201
		2202	while (d > 8)
		2203	d -= 8;
		2204
2197	return d;	2205	return d;
2198	}	2206	}
2199		2207
2200	/*	2208	/*
2201	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2209	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2202	* between two directions (which are expected to be absolute (see absdir())	2210	* between two directions (which are expected to be absolute (see absdir())
2203	*/	2211	*/
2204		2212
		2213	int
2205	int dirdiff(int dir1, int dir2) {	2214	dirdiff (int dir1, int dir2)
		2215	{
2206	int d;	2216	int d;
		2217
2207	d = abs(dir1 - dir2);	2218	d = abs (dir1 - dir2);
2208	if(d>4)	2219	if (d > 4)
2209	d = 8 - d;	2220	d = 8 - d;
		2221
2210	return d;	2222	return d;
2211	}	2223	}
2212		2224
2213	/* peterm:	2225	/* peterm:
2214	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2226	* 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	2229	* 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.	2230	* 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	2231	* Moved from spell_util.c to object.c with the other related direction
2220	* functions.	2232	* functions.
2221	*/	2233	*/
2222
2223	int reduction_dir[SIZEOFFREE][3] = {	2234	int reduction_dir[SIZEOFFREE][3] = {
2224	{0,0,0}, /* 0 */	2235	{0, 0, 0}, /* 0 */
2225	{0,0,0}, /* 1 */	2236	{0, 0, 0}, /* 1 */
2226	{0,0,0}, /* 2 */	2237	{0, 0, 0}, /* 2 */
2227	{0,0,0}, /* 3 */	2238	{0, 0, 0}, /* 3 */
2228	{0,0,0}, /* 4 */	2239	{0, 0, 0}, /* 4 */
2229	{0,0,0}, /* 5 */	2240	{0, 0, 0}, /* 5 */
2230	{0,0,0}, /* 6 */	2241	{0, 0, 0}, /* 6 */
2231	{0,0,0}, /* 7 */	2242	{0, 0, 0}, /* 7 */
2232	{0,0,0}, /* 8 */	2243	{0, 0, 0}, /* 8 */
2233	{8,1,2}, /* 9 */	2244	{8, 1, 2}, /* 9 */
2234	{1,2,-1}, /* 10 */	2245	{1, 2, -1}, /* 10 */
2235	{2,10,12}, /* 11 */	2246	{2, 10, 12}, /* 11 */
2236	{2,3,-1}, /* 12 */	2247	{2, 3, -1}, /* 12 */
2237	{2,3,4}, /* 13 */	2248	{2, 3, 4}, /* 13 */
2238	{3,4,-1}, /* 14 */	2249	{3, 4, -1}, /* 14 */
2239	{4,14,16}, /* 15 */	2250	{4, 14, 16}, /* 15 */
2240	{5,4,-1}, /* 16 */	2251	{5, 4, -1}, /* 16 */
2241	{4,5,6}, /* 17 */	2252	{4, 5, 6}, /* 17 */
2242	{6,5,-1}, /* 18 */	2253	{6, 5, -1}, /* 18 */
2243	{6,20,18}, /* 19 */	2254	{6, 20, 18}, /* 19 */
2244	{7,6,-1}, /* 20 */	2255	{7, 6, -1}, /* 20 */
2245	{6,7,8}, /* 21 */	2256	{6, 7, 8}, /* 21 */
2246	{7,8,-1}, /* 22 */	2257	{7, 8, -1}, /* 22 */
2247	{8,22,24}, /* 23 */	2258	{8, 22, 24}, /* 23 */
2248	{8,1,-1}, /* 24 */	2259	{8, 1, -1}, /* 24 */
2249	{24,9,10}, /* 25 */	2260	{24, 9, 10}, /* 25 */
2250	{9,10,-1}, /* 26 */	2261	{9, 10, -1}, /* 26 */
2251	{10,11,-1}, /* 27 */	2262	{10, 11, -1}, /* 27 */
2252	{27,11,29}, /* 28 */	2263	{27, 11, 29}, /* 28 */
2253	{11,12,-1}, /* 29 */	2264	{11, 12, -1}, /* 29 */
2254	{12,13,-1}, /* 30 */	2265	{12, 13, -1}, /* 30 */
2255	{12,13,14}, /* 31 */	2266	{12, 13, 14}, /* 31 */
2256	{13,14,-1}, /* 32 */	2267	{13, 14, -1}, /* 32 */
2257	{14,15,-1}, /* 33 */	2268	{14, 15, -1}, /* 33 */
2258	{33,15,35}, /* 34 */	2269	{33, 15, 35}, /* 34 */
2259	{16,15,-1}, /* 35 */	2270	{16, 15, -1}, /* 35 */
2260	{17,16,-1}, /* 36 */	2271	{17, 16, -1}, /* 36 */
2261	{18,17,16}, /* 37 */	2272	{18, 17, 16}, /* 37 */
2262	{18,17,-1}, /* 38 */	2273	{18, 17, -1}, /* 38 */
2263	{18,19,-1}, /* 39 */	2274	{18, 19, -1}, /* 39 */
2264	{41,19,39}, /* 40 */	2275	{41, 19, 39}, /* 40 */
2265	{19,20,-1}, /* 41 */	2276	{19, 20, -1}, /* 41 */
2266	{20,21,-1}, /* 42 */	2277	{20, 21, -1}, /* 42 */
2267	{20,21,22}, /* 43 */	2278	{20, 21, 22}, /* 43 */
2268	{21,22,-1}, /* 44 */	2279	{21, 22, -1}, /* 44 */
2269	{23,22,-1}, /* 45 */	2280	{23, 22, -1}, /* 45 */
2270	{45,47,23}, /* 46 */	2281	{45, 47, 23}, /* 46 */
2271	{23,24,-1}, /* 47 */	2282	{23, 24, -1}, /* 47 */
2272	{24,9,-1}}; /* 48 */	2283	{24, 9, -1}
		2284	}; /* 48 */
2273		2285
2274	/* Recursive routine to step back and see if we can	2286	/* Recursive routine to step back and see if we can
2275	* find a path to that monster that we found. If not,	2287	* find a path to that monster that we found. If not,
2276	* we don't bother going toward it. Returns 1 if we	2288	* we don't bother going toward it. Returns 1 if we
2277	* can see a direct way to get it	2289	* can see a direct way to get it
2278	* Modified to be map tile aware -.MSW	2290	* Modified to be map tile aware -.MSW
2279	*/	2291	*/
2280		2292	int
2281
2282	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2293	can_see_monsterP (maptile *m, int x, int y, int dir)
		2294	{
2283	sint16 dx, dy;	2295	sint16 dx, dy;
2284	int mflags;	2296	int mflags;
2285		2297
		2298	if (dir < 0)
2286	if(dir<0) return 0; /* exit condition: invalid direction */	2299	return 0; /* exit condition: invalid direction */
2287		2300
2288	dx = x + freearr_x[dir];	2301	dx = x + freearr_x[dir];
2289	dy = y + freearr_y[dir];	2302	dy = y + freearr_y[dir];
2290		2303
2291	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2304	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2292		2305
2293	/* This functional arguably was incorrect before - it was	2306	/* This functional arguably was incorrect before - it was
2294	* checking for P_WALL - that was basically seeing if	2307	* checking for P_WALL - that was basically seeing if
2295	* we could move to the monster - this is being more	2308	* we could move to the monster - this is being more
2296	* literal on if we can see it. To know if we can actually	2309	* 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	2310	* move to the monster, we'd need the monster passed in or
2298	* at least its move type.	2311	* at least its move type.
2299	*/	2312	*/
2300	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2313	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2314	return 0;
2301		2315
2302	/* yes, can see. */	2316	/* yes, can see. */
2303	if(dir < 9) return 1;	2317	if (dir < 9)
		2318	return 1;
		2319
2304	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2320	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2305	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2321	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2306	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2322	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2307	}	2323	}
2308		2324
2309
2310
2311	/*	2325	/*
2312	* can_pick(picker, item): finds out if an object is possible to be	2326	* 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	2327	* picked up by the picker. Returnes 1 if it can be
2314	* picked up, otherwise 0.	2328	* picked up, otherwise 0.
2315	*	2329	*
…		…
2317	* core dumps if they do.	2331	* core dumps if they do.
2318	*	2332	*
2319	* Add a check so we can't pick up invisible objects (0.93.8)	2333	* Add a check so we can't pick up invisible objects (0.93.8)
2320	*/	2334	*/
2321		2335
		2336	int
2322	int can_pick(const object *who, const object *item) {	2337	can_pick (const object *who, const object *item)
		2338	{
2323	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2339	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2324	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2340	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2325	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2341	!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	}	2342	}
2328
2329		2343
2330	/*	2344	/*
2331	* create clone from object to another	2345	* create clone from object to another
2332	*/	2346	*/
		2347	object *
2333	object *object_create_clone (object *asrc) {	2348	object_create_clone (object *asrc)
		2349	{
2334	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2350	object *dst = 0, *tmp, *src, *part, *prev, *item;
2335		2351
2336	if(!asrc) return NULL;	2352	if (!asrc)
		2353	return 0;
		2354
2337	src = asrc;	2355	src = asrc;
2338	if(src->head)	2356	if (src->head)
2339	src = src->head;	2357	src = src->head;
2340		2358
2341	prev = NULL;	2359	prev = 0;
2342	for(part = src; part; part = part->more) {	2360	for (part = src; part; part = part->more)
2343	tmp = get_object();	2361	{
2344	copy_object(part,tmp);	2362	tmp = part->clone ();
2345	tmp->x -= src->x;	2363	tmp->x -= src->x;
2346	tmp->y -= src->y;	2364	tmp->y -= src->y;
		2365
2347	if(!part->head) {	2366	if (!part->head)
		2367	{
2348	dst = tmp;	2368	dst = tmp;
2349	tmp->head = NULL;
2350	} else {
2351	tmp->head = dst;	2369	tmp->head = 0;
2352	}	2370	}
		2371	else
		2372	tmp->head = dst;
		2373
2353	tmp->more = NULL;	2374	tmp->more = 0;
		2375
2354	if(prev)	2376	if (prev)
2355	prev->more = tmp;	2377	prev->more = tmp;
		2378
2356	prev = tmp;	2379	prev = tmp;
2357	}	2380	}
2358	/*** copy inventory ***/	2381
2359	for(item = src->inv; item; item = item->below) {	2382	for (item = src->inv; item; item = item->below)
2360	(void) insert_ob_in_ob(object_create_clone(item),dst);	2383	insert_ob_in_ob (object_create_clone (item), dst);
2361	}
2362		2384
2363	return dst;	2385	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	}	2386	}
2373		2387
2374	/* GROS - Creates an object using a string representing its content. */	2388	/* 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 */	2389	/* 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, */	2390	/* 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. */	2391	/* 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. */	2392	/* Remember not to use load_object_str in a time-critical situation. */
2379	/* Also remember that multiparts objects are not supported for now. */	2393	/* Also remember that multiparts objects are not supported for now. */
2380		2394	object *
2381	object* load_object_str(const char *obstr)	2395	load_object_str (const char *obstr)
2382	{	2396	{
2383	object *op;	2397	object *op;
2384	char filename[MAX_BUF];	2398	char filename[MAX_BUF];
		2399
2385	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);	2400	sprintf (filename, "%s/cfloadobstr2044", settings.tmpdir);
2386		2401
2387	FILE *tempfile=fopen(filename,"w");	2402	FILE *tempfile = fopen (filename, "w");
		2403
2388	if (tempfile == NULL)	2404	if (tempfile == NULL)
2389	{	2405	{
2390	LOG(llevError,"Error - Unable to access load object temp file\n");	2406	LOG (llevError, "Error - Unable to access load object temp file\n");
2391	return NULL;	2407	return NULL;
2392	};	2408	}
		2409
2393	fprintf(tempfile,obstr);	2410	fprintf (tempfile, obstr);
2394	fclose(tempfile);	2411	fclose (tempfile);
2395		2412
2396	op=get_object();	2413	op = object::create ();
2397		2414
2398	object_thawer thawer (filename);	2415	object_thawer thawer (filename);
2399		2416
2400	if (thawer)	2417	if (thawer)
2401	load_object(thawer,op,0);	2418	load_object (thawer, op, 0);
2402		2419
2403	LOG(llevDebug," load str completed, object=%s\n", &op->name);	2420	LOG (llevDebug, " load str completed, object=%s\n", &op->name);
2404	CLEAR_FLAG(op,FLAG_REMOVED);	2421	CLEAR_FLAG (op, FLAG_REMOVED);
2405		2422
2406	return op;	2423	return op;
2407	}	2424	}
2408		2425
2409	/* This returns the first object in who's inventory that	2426	/* This returns the first object in who's inventory that
2410	* has the same type and subtype match.	2427	* has the same type and subtype match.
2411	* returns NULL if no match.	2428	* returns NULL if no match.
2412	*/	2429	*/
		2430	object *
2413	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2431	find_obj_by_type_subtype (const object *who, int type, int subtype)
2414	{	2432	{
2415	object *tmp;
2416
2417	for (tmp=who->inv; tmp; tmp=tmp->below)	2433	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2418	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2434	if (tmp->type == type && tmp->subtype == subtype)
		2435	return tmp;
2419		2436
2420	return NULL;	2437	return 0;
2421	}	2438	}
2422		2439
2423	/* If ob has a field named key, return the link from the list,	2440	/* If ob has a field named key, return the link from the list,
2424	* otherwise return NULL.	2441	* otherwise return NULL.
2425	*	2442	*
2426	* key must be a passed in shared string - otherwise, this won't	2443	* key must be a passed in shared string - otherwise, this won't
2427	* do the desired thing.	2444	* do the desired thing.
2428	*/	2445	*/
		2446	key_value *
2429	key_value * get_ob_key_link(const object * ob, const char * key) {	2447	get_ob_key_link (const object *ob, const char *key)
2430	key_value * link;	2448	{
2431
2432	for (link = ob->key_values; link != NULL; link = link->next) {	2449	for (key_value *link = ob->key_values; link; link = link->next)
2433	if (link->key == key) {	2450	if (link->key == key)
2434	return link;	2451	return link;
2435	}	2452
2436	}	2453	return 0;
2437		2454	}
2438	return NULL;
2439	}
2440		2455
2441	/*	2456	/*
2442	* Returns the value of op has an extra_field for key, or NULL.	2457	* Returns the value of op has an extra_field for key, or NULL.
2443	*	2458	*
2444	* The argument doesn't need to be a shared string.	2459	* The argument doesn't need to be a shared string.
2445	*	2460	*
2446	* The returned string is shared.	2461	* The returned string is shared.
2447	*/	2462	*/
		2463	const char *
2448	const char * get_ob_key_value(const object * op, const char * const key) {	2464	get_ob_key_value (const object *op, const char *const key)
		2465	{
2449	key_value * link;	2466	key_value *link;
2450	const char * canonical_key;	2467	shstr_cmp canonical_key (key);
		2468
		2469	if (!canonical_key)
2451		2470	{
2452	canonical_key = shstr::find (key);
2453
2454	if (canonical_key == NULL) {
2455	/* 1. There being a field named key on any object	2471	/* 1. There being a field named key on any object
2456	* implies there'd be a shared string to find.	2472	* implies there'd be a shared string to find.
2457	* 2. Since there isn't, no object has this field.	2473	* 2. Since there isn't, no object has this field.
2458	* 3. Therefore, *this* object doesn't have this field.	2474	* 3. Therefore, *this* object doesn't have this field.
2459	*/	2475	*/
2460	return NULL;	2476	return 0;
2461	}	2477	}
2462		2478
2463	/* This is copied from get_ob_key_link() above -	2479	/* This is copied from get_ob_key_link() above -
2464	* only 4 lines, and saves the function call overhead.	2480	* only 4 lines, and saves the function call overhead.
2465	*/	2481	*/
2466	for (link = op->key_values; link != NULL; link = link->next) {	2482	for (link = op->key_values; link; link = link->next)
2467	if (link->key == canonical_key) {	2483	if (link->key == canonical_key)
2468	return link->value;	2484	return link->value;
2469	}	2485
2470	}	2486	return 0;
2471	return NULL;
2472	}	2487	}
2473		2488
2474		2489
2475	/*	2490	/*
2476	* Updates the canonical_key in op to value.	2491	* 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	2495	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2481	* keys.	2496	* keys.
2482	*	2497	*
2483	* Returns TRUE on success.	2498	* Returns TRUE on success.
2484	*/	2499	*/
		2500	int
2485	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2501	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2502	{
2486	key_value * field = NULL, *last=NULL;	2503	key_value *field = NULL, *last = NULL;
2487		2504
2488	for (field=op->key_values; field != NULL; field=field->next) {	2505	for (field = op->key_values; field != NULL; field = field->next)
		2506	{
2489	if (field->key != canonical_key) {	2507	if (field->key != canonical_key)
		2508	{
2490	last = field;	2509	last = field;
2491	continue;	2510	continue;
2492	}	2511	}
2493		2512
2494	if (value)	2513	if (value)
2495	field->value = value;	2514	field->value = value;
2496	else {	2515	else
		2516	{
2497	/* Basically, if the archetype has this key set,	2517	/* Basically, if the archetype has this key set,
2498	* we need to store the null value so when we save	2518	* we need to store the null value so when we save
2499	* it, we save the empty value so that when we load,	2519	* it, we save the empty value so that when we load,
2500	* we get this value back again.	2520	* we get this value back again.
2501	*/	2521	*/
2502	if (get_ob_key_link (&op->arch->clone, canonical_key))	2522	if (get_ob_key_link (&op->arch->clone, canonical_key))
2503	field->value = 0;	2523	field->value = 0;
		2524	else
		2525	{
		2526	if (last)
		2527	last->next = field->next;
2504	else	2528	else
2505	{
2506	if (last) last->next = field->next;
2507	else op->key_values = field->next;	2529	op->key_values = field->next;
2508		2530
2509	delete field;	2531	delete field;
2510	}	2532	}
2511	}	2533	}
2512	return TRUE;	2534	return TRUE;
2513	}	2535	}
2514	/* IF we get here, key doesn't exist */	2536	/* IF we get here, key doesn't exist */
2515		2537
2516	/* No field, we'll have to add it. */	2538	/* No field, we'll have to add it. */
2517		2539
2518	if (!add_key) {	2540	if (!add_key)
2519	return FALSE;	2541	return FALSE;
2520	}	2542
2521	/* There isn't any good reason to store a null	2543	/* There isn't any good reason to store a null
2522	* value in the key/value list. If the archetype has	2544	* value in the key/value list. If the archetype has
2523	* this key, then we should also have it, so shouldn't	2545	* this key, then we should also have it, so shouldn't
2524	* be here. If user wants to store empty strings,	2546	* be here. If user wants to store empty strings,
2525	* should pass in ""	2547	* should pass in ""
2526	*/	2548	*/
2527	if (value == NULL) return TRUE;	2549	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;	2550	return TRUE;
		2551
		2552	field = new key_value;
		2553
		2554	field->key = canonical_key;
		2555	field->value = value;
		2556	/* Usual prepend-addition. */
		2557	field->next = op->key_values;
		2558	op->key_values = field;
		2559
		2560	return TRUE;
2538	}	2561	}
2539		2562
2540	/*	2563	/*
2541	* Updates the key in op to value.	2564	* Updates the key in op to value.
2542	*	2565	*
…		…
2544	* and not add new ones.	2567	* and not add new ones.
2545	* In general, should be little reason FALSE is ever passed in for add_key	2568	* In general, should be little reason FALSE is ever passed in for add_key
2546	*	2569	*
2547	* Returns TRUE on success.	2570	* Returns TRUE on success.
2548	*/	2571	*/
		2572	int
2549	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2573	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2550	{	2574	{
2551	shstr key_ (key);	2575	shstr key_ (key);
		2576
2552	return set_ob_key_value_s (op, key_, value, add_key);	2577	return set_ob_key_value_s (op, key_, value, add_key);
2553	}	2578	}
		2579
		2580	object::depth_iterator::depth_iterator (object *container)
		2581	: iterator_base (container)
		2582	{
		2583	while (item->inv)
		2584	item = item->inv;
		2585	}
		2586
		2587	void
		2588	object::depth_iterator::next ()
		2589	{
		2590	if (item->below)
		2591	{
		2592	item = item->below;
		2593
		2594	while (item->inv)
		2595	item = item->inv;
		2596	}
		2597	else
		2598	item = item->env;
		2599	}
		2600
		2601	// return a suitable string describing an objetc in enough detail to find it
		2602	const char *
		2603	object::debug_desc (char *info) const
		2604	{
		2605	char info2[256 * 3];
		2606	char *p = info;
		2607
		2608	p += snprintf (p, 256, "%d=\"%s%s%s\"",
		2609	count,
		2610	&name,
		2611	title ? " " : "",
		2612	title ? (const char *)title : "");
		2613
		2614	if (env)
		2615	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2616
		2617	if (map)
		2618	p += snprintf (p, 256, "(on %s@%d+%d)", map->path, x, y);
		2619
		2620	return info;
		2621	}
		2622
		2623	const char *
		2624	object::debug_desc () const
		2625	{
		2626	static char info[256 * 3];
		2627	return debug_desc (info);
		2628	}
		2629

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