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Comparing deliantra/server/common/object.C (file contents):
Revision 1.17 by root, Mon Sep 4 17:27:13 2006 UTC vs.
Revision 1.187 by root, Tue Sep 4 08:42:55 2007 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3	* "$Id: object.C,v 1.17 2006/09/04 17:27:13 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* Crossfire TRT is free software: you can redistribute it and/or modify
13	it under the terms of the GNU General Public License as published by	9	* it under the terms of the GNU General Public License as published by
14	the Free Software Foundation; either version 2 of the License, or	10	* the Free Software Foundation, either version 3 of the License, or
15	(at your option) any later version.	11	* (at your option) any later version.
16		12	*
17	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	*
25		21	* The authors can be reached via e-mail to <crossfire@schmorp.de>
26	The authors can be reached via e-mail at crossfire-devel@real-time.com
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>	33	#include <sproto.h>
41	#include <loader.h>	34	#include <loader.h>
		35
		36	#include <bitset>
		37
42	int nrofallocobjects = 0;	38	int nrofallocobjects = 0;
		39	static UUID uuid;
		40	const uint64 UUID_SKIP = 1<<19;
43		41
44	object *objects; /* Pointer to the list of used objects */	42	objectvec objects;
45	object *active_objects; /* List of active objects that need to be processed */	43	activevec actives;
46		44
47	short freearr_x[SIZEOFFREE]=	45	short freearr_x[SIZEOFFREE] = { 0, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
48	{0,0,1,1,1,0,-1,-1,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,-2,-2,-2,-1,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	46	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
50	short freearr_y[SIZEOFFREE]=	47	};
51	{0,-1,-1,0,1,1,1,0,-1,-2,-2,-2,-1,0,1,2,2,2,2,2,1,0,-1,-2,-2,	48	short freearr_y[SIZEOFFREE] = { 0, -1, -1, 0, 1, 1, 1, 0, -1, -2, -2, -2, -1, 0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2,
52	-3,-3,-3,-3,-2,-1,0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3};	49	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	int maxfree[SIZEOFFREE]=	50	};
54	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	51	int maxfree[SIZEOFFREE] = { 0, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	52	48, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		53	};
56	int freedir[SIZEOFFREE]= {	54	int freedir[SIZEOFFREE] = {
57	0,1,2,3,4,5,6,7,8,1,2,2,2,3,4,4,4,5,6,6,6,7,8,8,8,	55	0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
58	1,2,2,2,2,2,3,4,4,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8};	56	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		57	};
59		58
		59	static void
		60	write_uuid (void)
		61	{
		62	char filename1[MAX_BUF], filename2[MAX_BUF];
		63
		64	sprintf (filename1, "%s/uuid", settings.localdir);
		65	sprintf (filename2, "%s/uuid~", settings.localdir);
		66
		67	FILE *fp;
		68
		69	if (!(fp = fopen (filename2, "w")))
		70	{
		71	LOG (llevError, "ERROR: cannot open %s for writing, unable to write UUID!\n", filename2);
		72	return;
		73	}
		74
		75	fprintf (fp, "<1,%llx>\n", (unsigned long long)uuid.seq + UUID_SKIP * 2);
		76	fclose (fp);
		77	rename (filename2, filename1);
		78	}
		79
		80	static void
		81	read_uuid (void)
		82	{
		83	char filename[MAX_BUF];
		84
		85	sprintf (filename, "%s/uuid", settings.localdir);
		86
		87	FILE *fp;
		88
		89	if (!(fp = fopen (filename, "r")))
		90	{
		91	if (errno == ENOENT)
		92	{
		93	LOG (llevInfo, "RESET uid to 1\n");
		94	uuid.seq = 0;
		95	write_uuid ();
		96	return;
		97	}
		98
		99	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		100	_exit (1);
		101	}
		102
		103	int version;
		104	unsigned long long uid;
		105	if (2 != fscanf (fp, "<%d,%llx>\n", &version, &uid) || version != 1)
		106	{
		107	LOG (llevError, "FATAL: error reading uid from %s!\n", filename);
		108	_exit (1);
		109	}
		110
		111	uuid.seq = uid;
		112	write_uuid ();
		113	LOG (llevDebug, "read UID: %" PRId64 "\n", uid);
		114	fclose (fp);
		115	}
		116
		117	UUID
		118	gen_uuid ()
		119	{
		120	UUID uid;
		121
		122	uid.seq = ++uuid.seq;
		123
		124	if (!(uuid.seq & (UUID_SKIP - 1)))
		125	write_uuid ();
		126
		127	return uid;
		128	}
		129
		130	void
		131	init_uuid ()
		132	{
		133	read_uuid ();
		134	}
60		135
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	136	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		137	static int
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	138	compare_ob_value_lists_one (const object *wants, const object *has)
		139	{
63	key_value * wants_field;	140	key_value *wants_field;
64		141
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	142	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	143	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	144	* different structure or at least keep the lists sorted...
68	*/	145	*/
69		146
70	/* For each field in wants, */	147	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	148	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		149	{
72	key_value * has_field;	150	key_value *has_field;
73		151
74	/* Look for a field in has with the same key. */	152	/* Look for a field in has with the same key. */
75	has_field = get_ob_key_link(has, wants_field->key);	153	has_field = get_ob_key_link (has, wants_field->key);
		154
		155	if (has_field == NULL)
76		156	{
77	if (has_field == NULL) {
78	/* No field with that name. */	157	/* No field with that name. */
79	return FALSE;	158	return FALSE;
80	}	159	}
81		160
82	/* Found the matching field. */	161	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {	162	if (has_field->value != wants_field->value)
		163	{
84	/* Values don't match, so this half of the comparison is false. */	164	/* Values don't match, so this half of the comparison is false. */
85	return FALSE;	165	return FALSE;
86	}	166	}
87		167
88	/* If we get here, we found a match. Now for the next field in wants. */	168	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90		169	}
		170
91	/* If we get here, every field in wants has a matching field in has. */	171	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	172	return TRUE;
93	}	173	}
94		174
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	175	/* Returns TRUE if ob1 has the same key_values as ob2. */
		176	static int
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	177	compare_ob_value_lists (const object *ob1, const object *ob2)
		178	{
97	/* However, there may be fields in has which aren't partnered in wants,	179	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	180	* so we need to run the comparison *twice*. :(
99	*/	181	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	182	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
101	}	183	}
102		184
103	/* Function examines the 2 objects given to it, and returns true if	185	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	186	* they can be merged together.
105	*	187	*
106	* Note that this function appears a lot longer than the macro it	188	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	189	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	190	* reduce this to the same efficiency.
109	*	191	*
110	* Check nrof variable *before* calling CAN_MERGE()	192	* Check nrof variable *before* calling can_merge()
111	*	193	*
112	* Improvements made with merge: Better checking on potion, and also	194	* Improvements made with merge: Better checking on potion, and also
113	* check weight	195	* check weight
114	*/	196	*/
115
116	bool
117	object::can_merge (object *ob1, object *ob2)	197	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	198	{
119	/* A couple quicksanity checks */	199	/* A couple quicksanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	200	if (ob1 == ob2
		201	|| ob1->type != ob2->type
		202	|| ob1->speed != ob2->speed
		203	|| ob1->value != ob2->value
		204	|| ob1->name != ob2->name)
121	return 0;	205	return 0;
122		206
123	if (ob1->speed != ob2->speed)	207	//TODO: this ain't working well, use nicer and correct overflow check
124	return 0;
125
126	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that	208	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
127	* value could not be stored in a sint32 (which unfortunately sometimes is	209	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).	210	* used to store nrof).
129	*/	211	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)	212	if (ob1->nrof + ob2->nrof >= 1UL << 31)
…		…
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	222	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		223
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	224	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	225	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		226
145		227	if ((ob1->flag ^ ob2->flag).reset (FLAG_INV_LOCKED).reset (FLAG_CLIENT_SENT).any ()
146	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something	228	|| ob1->arch != ob2->arch
147	* being locked in inventory should prevent merging.
148	* 0x4 in flags3 is CLIENT_SENT
149	*/
150	if ((ob1->arch != ob2->arch) ||
151	(ob1->flags[0] != ob2->flags[0]) ||
152	(ob1->flags[1] != ob2->flags[1]) ||
153	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
154	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
155	(ob1->name != ob2->name) ||	229	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	230	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	231	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	232	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||	233	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||	234	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats) )
161	(ob1->attacktype != ob2->attacktype) ||	235	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	236	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	237	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	238	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	239	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	240	|| ob1->animation_id != ob2->animation_id
167	(ob1->client_type != ob2->client_type) ||	241	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	242	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	243	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	244	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	245	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	246	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	247	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	248	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	249	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	250	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	251	|| ob1->move_slow_penalty != ob2->move_slow_penalty)
178	return 0;	252	return 0;
179		253
180	/* This is really a spellbook check - really, we should	254	/* This is really a spellbook check - really, we should
181	* check all objects in the inventory.	255	* check all objects in the inventory.
182	*/	256	*/
183	if (ob1->inv || ob2->inv)	257	if (ob1->inv || ob2->inv)
184	{	258	{
185	/* if one object has inventory but the other doesn't, not equiv */	259	/* if one object has inventory but the other doesn't, not equiv */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))	260	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;	261	return 0;
188		262
189	/* Now check to see if the two inventory objects could merge */	263	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	264	if (!object::can_merge (ob1->inv, ob2->inv))
191	return 0;	265	return 0;
192		266
193	/* inventory ok - still need to check rest of this object to see	267	/* inventory ok - still need to check rest of this object to see
194	* if it is valid.	268	* if it is valid.
195	*/	269	*/
196	}	270	}
…		…
204		278
205	/* Note sure why the following is the case - either the object has to	279	/* Note sure why the following is the case - either the object has to
206	* be animated or have a very low speed. Is this an attempted monster	280	* be animated or have a very low speed. Is this an attempted monster
207	* check?	281	* check?
208	*/	282	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	283	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	284	return 0;
212		285
213	switch (ob1->type)	286	switch (ob1->type)
214	{	287	{
215	case SCROLL:	288	case SCROLL:
216	if (ob1->level != ob2->level)	289	if (ob1->level != ob2->level)
217	return 0;	290	return 0;
218	break;	291	break;
219	}	292	}
220		293
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	294	if (ob1->key_values != NULL || ob2->key_values != NULL)
222	{	295	{
223	/* At least one of these has key_values. */	296	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	297	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))
225	/* One has fields, but the other one doesn't. */	298	/* One has fields, but the other one doesn't. */
226	return 0;	299	return 0;
227	else if (!compare_ob_value_lists (ob1, ob2))	300	else if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	301	return 0;
229	}	302	}
230		303
231	//TODO: generate an event or call into perl for additional checks
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	if (!cfperl_can_merge (ob1, ob2))
		311	return 0;
239	}	312	}
240		313
241	/* Everything passes, must be OK. */	314	/* Everything passes, must be OK. */
242	return 1;	315	return 1;
243	}	316	}
		317
244	/*	318	/*
245	* sum_weight() is a recursive function which calculates the weight	319	* sum_weight() is a recursive function which calculates the weight
246	* an object is carrying. It goes through in figures out how much	320	* an object is carrying. It goes through in figures out how much
247	* containers are carrying, and sums it up.	321	* containers are carrying, and sums it up.
248	*/	322	*/
249	signed long sum_weight(object *op) {	323	long
		324	sum_weight (object *op)
		325	{
250	signed long sum;	326	long sum;
251	object *inv;	327	object *inv;
		328
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	329	for (sum = 0, inv = op->inv; inv; inv = inv->below)
		330	{
253	if (inv->inv)	331	if (inv->inv)
254	sum_weight(inv);	332	sum_weight (inv);
		333
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	334	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
256	}	335	}
		336
257	if (op->type == CONTAINER && op->stats.Str)	337	if (op->type == CONTAINER && op->stats.Str)
258	sum = (sum * (100 - op->stats.Str))/100;	338	sum = (sum * (100 - op->stats.Str)) / 100;
		339
259	if(op->carrying != sum)	340	if (op->carrying != sum)
260	op->carrying = sum;	341	op->carrying = sum;
		342
261	return sum;	343	return sum;
262	}	344	}
263		345
264	/**	346	/**
265	* Return the outermost environment object for a given object.	347	* Return the outermost environment object for a given object.
266	*/	348	*/
267		349
		350	object *
268	object *object_get_env_recursive (object *op) {	351	object_get_env_recursive (object *op)
		352	{
269	while (op->env != NULL)	353	while (op->env != NULL)
270	op = op->env;	354	op = op->env;
271	return op;	355	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	}	356	}
286		357
287	/*	358	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.	359	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.	360	* Some error messages.
290	* The result of the dump is stored in the static global errmsg array.	361	* The result of the dump is stored in the static global errmsg array.
291	*/	362	*/
292		363	char *
293	void dump_object2(object *op) {
294	errmsg[0] = 0;
295	return;
296	//TODO//D#d#
297	#if 0
298	char *cp;
299	/* object *tmp;*/
300
301	if(op->arch!=NULL) {
302	strcat(errmsg,"arch ");
303	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
304	strcat(errmsg,"\n");
305	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	#if 0
308	/* Don't dump player diffs - they are too long, mostly meaningless, and
309	* will overflow the buffer.
310	* Changed so that we don't dump inventory either. This may
311	* also overflow the buffer.
312	*/
313	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	} else {
320	strcat(errmsg,"Object ");
321	if (op->name==NULL) strcat(errmsg, "(null)");
322	else strcat(errmsg,op->name);
323	strcat(errmsg,"\n");
324	#if 0
325	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
326	strcat(errmsg,cp);
327	for (tmp=op->inv; tmp; tmp=tmp->below)
328	dump_object2(tmp);
329	#endif
330	strcat(errmsg,"end\n");
331	}
332	#endif
333	}
334
335	/*
336	* Dumps an object. Returns output in the static global errmsg array.
337	*/
338
339	void dump_object(object *op) {	364	dump_object (object *op)
340	if(op==NULL) {	365	{
341	strcpy(errmsg,"[NULL pointer]");	366	if (!op)
342	return;	367	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		368
348	void dump_all_objects(void) {	369	object_freezer freezer;
349	object *op;	370	op->write (freezer);
350	for(op=objects;op!=NULL;op=op->next) {	371	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	372	}
355		373
356	/*	374	/*
357	* get_nearest_part(multi-object, object 2) returns the part of the	375	* get_nearest_part(multi-object, object 2) returns the part of the
358	* multi-object 1 which is closest to the second object.	376	* multi-object 1 which is closest to the second object.
359	* If it's not a multi-object, it is returned.	377	* If it's not a multi-object, it is returned.
360	*/	378	*/
361		379	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	object *
377	object *find_object(tag_t i) {	397	find_object (tag_t i)
378	object *op;	398	{
379	for(op=objects;op!=NULL;op=op->next)	399	for_all_objects (op)
380	if(op->count==i)	400	if (op->count == i)
381	break;
382	return op;	401	return op;
		402
		403	return 0;
383	}	404	}
384		405
385	/*	406	/*
386	* Returns the first object which has a name equal to the argument.	407	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	408	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	409	* Enables features like "patch <name-of-other-player> food 999"
389	*/	410	*/
390		411	object *
391	object *find_object_name(const char *str) {	412	find_object_name (const char *str)
392	const char *name = shstr::find (str);	413	{
		414	shstr_cmp str_ (str);
393	object *op;	415	object *op;
394	for(op=objects;op!=NULL;op=op->next)	416
		417	for_all_objects (op)
395	if(&op->name == name)	418	if (op->name == str_)
396	break;	419	break;
397		420
398	return op;	421	return op;
399	}	422	}
400		423
		424	void
401	void free_all_object_data ()	425	free_all_object_data ()
402	{	426	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);	427	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	}	428	}
440		429
441	/*	430	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	431	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	432	* skill and experience objects.
444	*/	433	* ACTUALLY NO! investigate! TODO
445	void set_owner (object *op, object *owner)
446	{
447	if(owner==NULL||op==NULL)
448	return;
449
450	/* next line added to allow objects which own objects */
451	/* 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
453	* fireball. I believe that was caused by one of the objects getting
454	* 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.
456	*/
457	while (owner->owner && owner!=owner->owner &&
458	owner->ownercount==owner->owner->count) owner=owner->owner;
459
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;
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	*	434	*/
477	* Use this function if player created an object (e.g. fire bullet, swarm	435	void
478	* spell), and this object creates further objects whose kills should be	436	object::set_owner (object *owner)
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	{	437	{
484	object *owner = get_owner (clone);	438	// allow objects which own objects
485	if (owner == NULL) {	439	if (owner)
486	/* players don't have owners - they own themselves. Update	440	while (owner->owner)
487	* as appropriate.	441	owner = owner->owner;
		442
		443	this->owner = owner;
		444	}
		445
		446	int
		447	object::slottype () const
		448	{
		449	if (type == SKILL)
		450	{
		451	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
		452	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		453	}
		454	else
		455	{
		456	if (slot [body_combat].info) return slot_combat;
		457	if (slot [body_range ].info) return slot_ranged;
		458	}
		459
		460	return slot_none;
		461	}
		462
		463	bool
		464	object::change_weapon (object *ob)
		465	{
		466	if (current_weapon == ob)
		467	return true;
		468
		469	if (chosen_skill)
		470	chosen_skill->flag [FLAG_APPLIED] = false;
		471
		472	current_weapon = ob;
		473	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		474
		475	if (chosen_skill)
		476	chosen_skill->flag [FLAG_APPLIED] = true;
		477
		478	update_stats ();
		479
		480	if (ob)
		481	{
		482	// now check wether any body locations became invalid, in which case
		483	// we cannot apply the weapon at the moment.
		484	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		485	if (slot[i].used < 0)
488	*/	486	{
489	if (clone->type == PLAYER) owner=clone;	487	current_weapon = chosen_skill = 0;
490	else return;	488	update_stats ();
		489
		490	new_draw_info_format (NDI_UNIQUE, 0, this,
		491	"You try to balance all your items at once, "
		492	"but the %s is just too much for your body. "
		493	"[You need to unapply some items first.]", &ob->name);
		494	return false;
		495	}
		496
		497	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		498	}
		499	else
		500	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		501
		502	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
491	}	503	{
492	set_owner(op, owner);	504	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		505	&name, ob->debug_desc ());
		506	return false;
		507	}
493		508
		509	return true;
494	}	510	}
495		511
496	/* Zero the key_values on op, decrementing the shared-string	512	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	513	* refcounts and freeing the links.
498	*/	514	*/
		515	static void
499	static void free_key_values(object * op)	516	free_key_values (object *op)
500	{	517	{
501	for (key_value *i = op->key_values; i != 0; )	518	for (key_value *i = op->key_values; i; )
502	{	519	{
503	key_value *next = i->next;	520	key_value *next = i->next;
504	delete i;	521	delete i;
		522
505	i = next;	523	i = next;
506	}	524	}
507		525
508	op->key_values = 0;	526	op->key_values = 0;
509	}	527	}
510		528
511	void object::clear ()	529	object &
		530	object::operator =(const object &src)
512	{	531	{
513	attachable_base::clear ();	532	bool is_freed = flag [FLAG_FREED];
		533	bool is_removed = flag [FLAG_REMOVED];
514		534
515	free_key_values (this);	535	*(object_copy *)this = src;
516		536
517	name = 0;	537	flag [FLAG_FREED] = is_freed;
518	name_pl = 0;	538	flag [FLAG_REMOVED] = is_removed;
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	/*
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,
575	* and then copies the contends of the first object into the second
576	* object, allocating what needs to be allocated. Basically, any
577	* 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
579	* will point at garbage.
580	*/
581
582	void copy_object (object *op2, object *op)
583	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);
586
587	op2->clone (op);
588
589	if (is_freed) SET_FLAG (op, FLAG_FREED);
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);
591
592	if (op2->speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
594		539
595	/* Copy over key_values, if any. */	540	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	541	if (src.key_values)
597	{	542	{
598	key_value *tail = NULL;	543	key_value *tail = 0;
599	key_value *i;
600
601	op->key_values = NULL;	544	key_values = 0;
602		545
603	for (i = op2->key_values; i != NULL; i = i->next)	546	for (key_value *i = src.key_values; i; i = i->next)
604	{	547	{
605	key_value *new_link = new key_value;	548	key_value *new_link = new key_value;
606		549
607	new_link->next = NULL;	550	new_link->next = 0;
608	new_link->key = i->key;	551	new_link->key = i->key;
609	new_link->value = i->value;	552	new_link->value = i->value;
610		553
611	/* Try and be clever here, too. */	554	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	555	if (!key_values)
613	{	556	{
614	op->key_values = new_link;	557	key_values = new_link;
615	tail = new_link;	558	tail = new_link;
616	}	559	}
617	else	560	else
618	{	561	{
619	tail->next = new_link;	562	tail->next = new_link;
620	tail = new_link;	563	tail = new_link;
621	}	564	}
622	}	565	}
623	}	566	}
624
625	update_ob_speed (op);
626	}	567	}
627		568
628	/*	569	/*
629	* get_object() grabs an object from the list of unused objects, makes	570	* copy_to first frees everything allocated by the dst object,
630	* sure it is initialised, and returns it.	571	* and then copies the contents of itself into the second
631	* If there are no free objects, expand_objects() is called to get more.	572	* object, allocating what needs to be allocated. Basically, any
		573	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
		574	* if the first object is freed, the pointers in the new object
		575	* will point at garbage.
		576	*/
		577	void
		578	object::copy_to (object *dst)
		579	{
		580	*dst = *this;
		581
		582	if (speed < 0)
		583	dst->speed_left -= rndm ();
		584
		585	dst->set_speed (dst->speed);
		586	}
		587
		588	void
		589	object::instantiate ()
		590	{
		591	if (!uuid.seq) // HACK
		592	uuid = gen_uuid ();
		593
		594	speed_left = -0.1f;
		595	/* copy the body_info to the body_used - this is only really
		596	* need for monsters, but doesn't hurt to do it for everything.
		597	* by doing so, when a monster is created, it has good starting
		598	* values for the body_used info, so when items are created
		599	* for it, they can be properly equipped.
632	*/	600	*/
		601	for (int i = NUM_BODY_LOCATIONS; i--; )
		602	slot[i].used = slot[i].info;
633		603
634	object *get_object ()	604	attachable::instantiate ();
635	{	605	}
636	object *op = new object;
637		606
638	op->count = ++ob_count;	607	object *
639		608	object::clone ()
640	op->active_next = 0;	609	{
641	op->active_prev = 0;	610	object *neu = create ();
642		611	copy_to (neu);
643	op->next = objects;
644	op->prev = 0;
645
646	if (objects)
647	objects->prev = op;
648
649	objects = op;
650
651	SET_FLAG (op, FLAG_REMOVED);
652
653	op->expmul = 1.0;
654	op->face = blank_face;
655	op->attacked_by_count = -1;
656
657	return op;	612	return neu;
658	}	613	}
659		614
660	/*	615	/*
661	* If an object with the IS_TURNABLE() flag needs to be turned due	616	* If an object with the IS_TURNABLE() flag needs to be turned due
662	* to the closest player being on the other side, this function can	617	* to the closest player being on the other side, this function can
663	* be called to update the face variable, _and_ how it looks on the map.	618	* be called to update the face variable, _and_ how it looks on the map.
664	*/	619	*/
665		620	void
666	void update_turn_face(object *op) {	621	update_turn_face (object *op)
		622	{
667	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	623	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
668	return;	624	return;
		625
669	SET_ANIMATION(op, op->direction);	626	SET_ANIMATION (op, op->direction);
670	update_object(op,UP_OBJ_FACE);	627	update_object (op, UP_OBJ_FACE);
671	}	628	}
672		629
673	/*	630	/*
674	* Updates the speed of an object. If the speed changes from 0 to another	631	* Updates the speed of an object. If the speed changes from 0 to another
675	* value, or vice versa, then add/remove the object from the active list.	632	* value, or vice versa, then add/remove the object from the active list.
676	* This function needs to be called whenever the speed of an object changes.	633	* This function needs to be called whenever the speed of an object changes.
677	*/	634	*/
678		635	void
679	void update_ob_speed(object *op) {	636	object::set_speed (float speed)
680	extern int arch_init;	637	{
681		638	if (flag [FLAG_FREED] && speed)
682	/* No reason putting the archetypes objects on the speed list,	639	{
683	* since they never really need to be updated.
684	*/
685
686	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
687	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	640	LOG (llevError, "Object %s is freed but has speed.\n", &name);
688	#ifdef MANY_CORES
689	abort();
690	#else
691	op->speed = 0;	641	speed = 0;
692	#endif
693	}	642	}
694	if (arch_init) {
695	return;
696	}
697	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
698	/* If already on active list, don't do anything */
699	if (op->active_next || op->active_prev || op==active_objects)
700	return;
701		643
702	/* process_events() expects us to insert the object at the beginning	644	this->speed = speed;
703	* of the list. */	645
704	op->active_next = active_objects;	646	if (has_active_speed ())
705	if (op->active_next!=NULL)	647	activate ();
706	op->active_next->active_prev = op;
707	active_objects = op;
708	}
709	else {	648	else
710	/* If not on the active list, nothing needs to be done */	649	deactivate ();
711	if (!op->active_next && !op->active_prev && op!=active_objects)
712	return;
713
714	if (op->active_prev==NULL) {
715	active_objects = op->active_next;
716	if (op->active_next!=NULL)
717	op->active_next->active_prev = NULL;
718	}
719	else {
720	op->active_prev->active_next = op->active_next;
721	if (op->active_next)
722	op->active_next->active_prev = op->active_prev;
723	}
724	op->active_next = NULL;
725	op->active_prev = NULL;
726	}
727	}	650	}
728		651
729	/* This function removes object 'op' from the list of active
730	* objects.
731	* This should only be used for style maps or other such
732	* reference maps where you don't want an object that isn't
733	* in play chewing up cpu time getting processed.
734	* The reverse of this is to call update_ob_speed, which
735	* will do the right thing based on the speed of the object.
736	*/
737	void remove_from_active_list(object *op)
738	{
739	/* If not on the active list, nothing needs to be done */
740	if (!op->active_next && !op->active_prev && op!=active_objects)
741	return;
742
743	if (op->active_prev==NULL) {
744	active_objects = op->active_next;
745	if (op->active_next!=NULL)
746	op->active_next->active_prev = NULL;
747	}
748	else {
749	op->active_prev->active_next = op->active_next;
750	if (op->active_next)
751	op->active_next->active_prev = op->active_prev;
752	}
753	op->active_next = NULL;
754	op->active_prev = NULL;
755	}
756
757	/*	652	/*
758	* update_object() updates the array which represents the map.	653	* update_object() updates the the map.
759	* It takes into account invisible objects (and represent squares covered	654	* It takes into account invisible objects (and represent squares covered
760	* by invisible objects by whatever is below them (unless it's another	655	* by invisible objects by whatever is below them (unless it's another
761	* invisible object, etc...)	656	* invisible object, etc...)
762	* If the object being updated is beneath a player, the look-window	657	* If the object being updated is beneath a player, the look-window
763	* of that player is updated (this might be a suboptimal way of	658	* of that player is updated (this might be a suboptimal way of
764	* updating that window, though, since update_object() is called _often_)	659	* updating that window, though, since update_object() is called _often_)
765	*	660	*
766	* action is a hint of what the caller believes need to be done.	661	* action is a hint of what the caller believes need to be done.
767	* For example, if the only thing that has changed is the face (due to
768	* an animation), we don't need to call update_position until that actually
769	* comes into view of a player. OTOH, many other things, like addition/removal
770	* of walls or living creatures may need us to update the flags now.
771	* current action are:	662	* current action are:
772	* UP_OBJ_INSERT: op was inserted	663	* UP_OBJ_INSERT: op was inserted
773	* UP_OBJ_REMOVE: op was removed	664	* UP_OBJ_REMOVE: op was removed
774	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	665	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
775	* as that is easier than trying to look at what may have changed.	666	* as that is easier than trying to look at what may have changed.
776	* UP_OBJ_FACE: only the objects face has changed.	667	* UP_OBJ_FACE: only the objects face has changed.
777	*/	668	*/
778		669	void
779	void update_object(object *op, int action) {	670	update_object (object *op, int action)
780	int update_now=0, flags;	671	{
781	MoveType move_on, move_off, move_block, move_slow;
782
783	if (op == NULL) {	672	if (op == NULL)
		673	{
784	/* this should never happen */	674	/* this should never happen */
785	LOG(llevDebug,"update_object() called for NULL object.\n");	675	LOG (llevDebug, "update_object() called for NULL object.\n");
786	return;	676	return;
787	}
788		677	}
789	if(op->env!=NULL) {	678
		679	if (op->env)
		680	{
790	/* Animation is currently handled by client, so nothing	681	/* Animation is currently handled by client, so nothing
791	* to do in this case.	682	* to do in this case.
792	*/	683	*/
793	return;	684	return;
794	}	685	}
795		686
796	/* If the map is saving, don't do anything as everything is	687	/* If the map is saving, don't do anything as everything is
797	* going to get freed anyways.	688	* going to get freed anyways.
798	*/	689	*/
799	if (!op->map || op->map->in_memory == MAP_SAVING) return;	690	if (!op->map || op->map->in_memory == MAP_SAVING)
800		691	return;
		692
801	/* make sure the object is within map boundaries */	693	/* make sure the object is within map boundaries */
802	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	694	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
803	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	695	{
804	LOG(llevError,"update_object() called for object out of map!\n");	696	LOG (llevError, "update_object() called for object out of map!\n");
805	#ifdef MANY_CORES	697	#ifdef MANY_CORES
806	abort();	698	abort ();
807	#endif	699	#endif
808	return;	700	return;
809	}
810		701	}
811	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
812	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
813	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
814	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
815	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
816	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
817		702
		703	mapspace &m = op->ms ();
		704
		705	if (!(m.flags_ & P_UPTODATE))
		706	/* nop */;
818	if (action == UP_OBJ_INSERT) {	707	else if (action == UP_OBJ_INSERT)
		708	{
		709	// this is likely overkill, TODO: revisit (schmorp)
819	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	710	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
820	update_now=1;
821
822	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	711	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
823	update_now=1;	712	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
824		713	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		714	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
825	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	715	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
826	update_now=1;	716	|| (m.move_on | op->move_on ) != m.move_on
827
828	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
829	update_now=1;
830
831	if ((move_on | op->move_on) != move_on) update_now=1;
832	if ((move_off | op->move_off) != move_off) update_now=1;	717	|| (m.move_off | op->move_off ) != m.move_off
		718	|| (m.move_slow | op->move_slow) != m.move_slow
833	/* This isn't perfect, but I don't expect a lot of objects to	719	/* This isn't perfect, but I don't expect a lot of objects to
834	* to have move_allow right now.	720	* to have move_allow right now.
835	*/	721	*/
836	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	722	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
837	update_now=1;	723	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
838	if ((move_slow | op->move_slow) != move_slow) update_now=1;	724	m.flags_ = 0;
839	}	725	}
840	/* if the object is being removed, we can't make intelligent	726	/* if the object is being removed, we can't make intelligent
841	* decisions, because remove_ob can't really pass the object	727	* decisions, because remove_ob can't really pass the object
842	* that is being removed.	728	* that is being removed.
843	*/	729	*/
844	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	730	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
845	update_now=1;	731	m.flags_ = 0;
846	} else if (action == UP_OBJ_FACE) {	732	else if (action == UP_OBJ_FACE)
847	/* Nothing to do for that case */	733	/* Nothing to do for that case */ ;
848	}
849	else {	734	else
850	LOG(llevError,"update_object called with invalid action: %d\n", action);	735	LOG (llevError, "update_object called with invalid action: %d\n", action);
851	}
852		736
853	if (update_now) {
854	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
855	update_position(op->map, op->x, op->y);
856	}
857
858	if(op->more!=NULL)	737	if (op->more)
859	update_object(op->more, action);	738	update_object (op->more, action);
860	}	739	}
861		740
		741	object::object ()
		742	{
		743	SET_FLAG (this, FLAG_REMOVED);
862		744
863	/*	745	expmul = 1.0;
864	* free_object() frees everything allocated by an object, removes	746	face = blank_face;
865	* it from the list of used objects, and puts it on the list of	747	}
866	* free objects. The IS_FREED() flag is set in the object.	748
867	* The object must have been removed by remove_ob() first for	749	object::~object ()
868	* this function to succeed.	750	{
869	*	751	unlink ();
870	* If free_inventory is set, free inventory as well. Else drop items in	752
871	* inventory to the ground.	753	free_key_values (this);
872	*/	754	}
		755
		756	static int object_count;
		757
		758	void object::link ()
		759	{
		760	assert (!index);//D
		761	uuid = gen_uuid ();
		762	count = ++object_count;
		763
		764	refcnt_inc ();
		765	objects.insert (this);
		766	}
		767
		768	void object::unlink ()
		769	{
		770	if (!index)
		771	return;
		772
		773	objects.erase (this);
		774	refcnt_dec ();
		775	}
873		776
874	void	777	void
875	free_object (object * ob)	778	object::activate ()
876	{	779	{
877	free_object2 (ob, 0);	780	/* If already on active list, don't do anything */
		781	if (active)
		782	return;
		783
		784	if (has_active_speed ())
		785	actives.insert (this);
878	}	786	}
879		787
880	void	788	void
881	free_object2 (object * ob, int free_inventory)	789	object::activate_recursive ()
882	{	790	{
883	object *tmp, *op;	791	activate ();
884		792
885	if (!QUERY_FLAG (ob, FLAG_REMOVED))	793	for (object *op = inv; op; op = op->below)
886	{	794	op->activate_recursive ();
887	LOG (llevDebug, "Free object called with non removed object\n");	795	}
888	dump_object (ob);
889	#ifdef MANY_CORES
890	abort ();
891	#endif
892	}
893		796
894	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	797	/* This function removes object 'op' from the list of active
895	{	798	* objects.
896	LOG (llevMonster, "Warning: tried to free friendly object.\n");	799	* This should only be used for style maps or other such
897	remove_friendly_object (ob);	800	* reference maps where you don't want an object that isn't
898	}	801	* in play chewing up cpu time getting processed.
899		802	* The reverse of this is to call update_ob_speed, which
900	if (QUERY_FLAG (ob, FLAG_FREED))	803	* will do the right thing based on the speed of the object.
901	{	804	*/
902	dump_object (ob);	805	void
903	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	806	object::deactivate ()
		807	{
		808	/* If not on the active list, nothing needs to be done */
		809	if (!active)
904	return;	810	return;
		811
		812	actives.erase (this);
		813	}
		814
		815	void
		816	object::deactivate_recursive ()
		817	{
		818	for (object *op = inv; op; op = op->below)
		819	op->deactivate_recursive ();
		820
		821	deactivate ();
		822	}
		823
		824	void
		825	object::set_flag_inv (int flag, int value)
		826	{
		827	for (object *op = inv; op; op = op->below)
905	}	828	{
906		829	op->flag [flag] = value;
907	if (ob->more != NULL)	830	op->set_flag_inv (flag, value);
908	{	831	}
909	free_object2 (ob->more, free_inventory);	832	}
910	ob->more = NULL;
911	}
912		833
		834	/*
		835	* Remove and free all objects in the inventory of the given object.
		836	* object.c ?
		837	*/
		838	void
		839	object::destroy_inv (bool drop_to_ground)
		840	{
		841	// need to check first, because the checks below might segfault
		842	// as we might be on an invalid mapspace and crossfire code
		843	// is too buggy to ensure that the inventory is empty.
		844	// corollary: if you create arrows etc. with stuff in tis inventory,
		845	// cf will crash below with off-map x and y
913	if (ob->inv)	846	if (!inv)
914	{	847	return;
		848
915	/* Only if the space blocks everything do we not process -	849	/* Only if the space blocks everything do we not process -
916	* if some form of movement is allowed, let objects	850	* if some form of movement is allowed, let objects
917	* drop on that space.	851	* drop on that space.
918	*/	852	*/
919	if (free_inventory || ob->map == NULL	853	if (!drop_to_ground
		854	|| !map
920	|| ob->map->in_memory != MAP_IN_MEMORY	855	|| map->in_memory != MAP_IN_MEMORY
921	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))	856	|| map->nodrop
922	{	857	|| ms ().move_block == MOVE_ALL)
923	op = ob->inv;
924
925	while (op != NULL)
926	{	858	{
927	tmp = op->below;	859	while (inv)
928	remove_ob (op);	860	{
929	free_object2 (op, free_inventory);	861	inv->destroy_inv (drop_to_ground);
930	op = tmp;	862	inv->destroy ();
931	}	863	}
932	}
933	else
934	{ /* Put objects in inventory onto this space */
935	op = ob->inv;
936
937	while (op != NULL)
938	{
939	tmp = op->below;
940	remove_ob (op);
941
942	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
943	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
944	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
945	free_object (op);
946	else
947	{
948	op->x = ob->x;
949	op->y = ob->y;
950	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
951	}
952
953	op = tmp;
954	}
955	}
956	}
957
958	/* Remove object from the active list */
959	ob->speed = 0;
960	update_ob_speed (ob);
961
962	SET_FLAG (ob, FLAG_FREED);
963	ob->count = 0;
964
965	/* Remove this object from the list of used objects */
966	if (ob->prev == NULL)
967	{
968	objects = ob->next;
969
970	if (objects != NULL)
971	objects->prev = NULL;
972	}	864	}
973	else	865	else
		866	{ /* Put objects in inventory onto this space */
		867	while (inv)
		868	{
		869	object *op = inv;
		870
		871	if (op->flag [FLAG_STARTEQUIP]
		872	|| op->flag [FLAG_NO_DROP]
		873	|| op->type == RUNE
		874	|| op->type == TRAP
		875	|| op->flag [FLAG_IS_A_TEMPLATE]
		876	|| op->flag [FLAG_DESTROY_ON_DEATH])
		877	op->destroy ();
		878	else
		879	map->insert (op, x, y);
		880	}
		881	}
		882	}
		883
		884	object *object::create ()
		885	{
		886	object *op = new object;
		887	op->link ();
		888	return op;
		889	}
		890
		891	void
		892	object::do_destroy ()
		893	{
		894	attachable::do_destroy ();
		895
		896	if (flag [FLAG_IS_LINKED])
		897	remove_button_link (this);
		898
		899	if (flag [FLAG_FRIENDLY])
		900	remove_friendly_object (this);
		901
		902	if (!flag [FLAG_REMOVED])
		903	remove ();
		904
		905	destroy_inv (true);
		906
		907	deactivate ();
		908	unlink ();
		909
		910	flag [FLAG_FREED] = 1;
		911
		912	// hack to ensure that freed objects still have a valid map
		913	{
		914	static maptile *freed_map; // freed objects are moved here to avoid crashes
		915
		916	if (!freed_map)
974	{	917	{
975	ob->prev->next = ob->next;	918	freed_map = new maptile;
976		919
977	if (ob->next != NULL)	920	freed_map->path = "<freed objects map>";
978	ob->next->prev = ob->prev;	921	freed_map->name = "/internal/freed_objects_map";
		922	freed_map->width = 3;
		923	freed_map->height = 3;
		924
		925	freed_map->alloc ();
		926	freed_map->in_memory = MAP_IN_MEMORY;
979	}	927	}
980		928
981	free_key_values (ob);	929	map = freed_map;
		930	x = 1;
		931	y = 1;
		932	}
982		933
983	/* Now link it with the free_objects list: */	934	if (more)
984	ob->prev = 0;	935	{
985	ob->next = 0;	936	more->destroy ();
		937	more = 0;
		938	}
986		939
987	delete ob;	940	head = 0;
		941
		942	// clear those pointers that likely might cause circular references
		943	owner = 0;
		944	enemy = 0;
		945	attacked_by = 0;
		946	current_weapon = 0;
		947	}
		948
		949	void
		950	object::destroy (bool destroy_inventory)
		951	{
		952	if (destroyed ())
		953	return;
		954
		955	if (destroy_inventory)
		956	destroy_inv (false);
		957
		958	if (is_head ())
		959	if (sound_destroy)
		960	play_sound (sound_destroy);
		961	else if (flag [FLAG_MONSTER])
		962	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		963
		964	attachable::destroy ();
988	}	965	}
989		966
990	/*	967	/*
991	* sub_weight() recursively (outwards) subtracts a number from the	968	* sub_weight() recursively (outwards) subtracts a number from the
992	* weight of an object (and what is carried by it's environment(s)).	969	* weight of an object (and what is carried by it's environment(s)).
993	*/	970	*/
994		971	void
995	void sub_weight (object *op, signed long weight) {	972	sub_weight (object *op, signed long weight)
		973	{
996	while (op != NULL) {	974	while (op != NULL)
		975	{
997	if (op->type == CONTAINER) {	976	if (op->type == CONTAINER)
998	weight=(signed long)(weight*(100-op->stats.Str)/100);	977	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
999	}	978
1000	op->carrying-=weight;	979	op->carrying -= weight;
1001	op = op->env;	980	op = op->env;
1002	}	981	}
1003	}	982	}
1004		983
1005	/* remove_ob(op):	984	/* op->remove ():
1006	* This function removes the object op from the linked list of objects	985	* This function removes the object op from the linked list of objects
1007	* which it is currently tied to. When this function is done, the	986	* which it is currently tied to. When this function is done, the
1008	* object will have no environment. If the object previously had an	987	* object will have no environment. If the object previously had an
1009	* environment, the x and y coordinates will be updated to	988	* environment, the x and y coordinates will be updated to
1010	* the previous environment.	989	* the previous environment.
1011	* Beware: This function is called from the editor as well!
1012	*/	990	*/
1013		991	void
1014	void remove_ob(object *op) {	992	object::do_remove ()
		993	{
1015	object *tmp,*last=NULL;	994	object *tmp, *last = 0;
1016	object *otmp;	995	object *otmp;
1017	tag_t tag;
1018	int check_walk_off;
1019	mapstruct *m;
1020	sint16 x,y;
1021
1022		996
1023	if(QUERY_FLAG(op,FLAG_REMOVED)) {	997	if (QUERY_FLAG (this, FLAG_REMOVED))
1024	dump_object(op);	998	return;
1025	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1026		999
1027	/* Changed it to always dump core in this case. As has been learned
1028	* in the past, trying to recover from errors almost always
1029	* make things worse, and this is a real error here - something
1030	* that should not happen.
1031	* Yes, if this was a mission critical app, trying to do something
1032	* to recover may make sense, but that is because failure of the app
1033	* may have other disastrous problems. Cf runs out of a script
1034	* so is easily enough restarted without any real problems.
1035	* MSW 2001-07-01
1036	*/
1037	abort();
1038	}
1039	if(op->more!=NULL)
1040	remove_ob(op->more);
1041
1042	SET_FLAG(op, FLAG_REMOVED);	1000	SET_FLAG (this, FLAG_REMOVED);
		1001	INVOKE_OBJECT (REMOVE, this);
1043		1002
		1003	if (more)
		1004	more->remove ();
		1005
1044	/*	1006	/*
1045	* In this case, the object to be removed is in someones	1007	* In this case, the object to be removed is in someones
1046	* inventory.	1008	* inventory.
1047	*/	1009	*/
1048	if(op->env!=NULL) {	1010	if (env)
		1011	{
1049	if(op->nrof)	1012	if (nrof)
1050	sub_weight(op->env, op->weight*op->nrof);	1013	sub_weight (env, weight * nrof);
1051	else	1014	else
1052	sub_weight(op->env, op->weight+op->carrying);	1015	sub_weight (env, weight + carrying);
1053		1016
1054	/* NO_FIX_PLAYER is set when a great many changes are being	1017	/* NO_FIX_PLAYER is set when a great many changes are being
1055	* made to players inventory. If set, avoiding the call	1018	* made to players inventory. If set, avoiding the call
1056	* to save cpu time.	1019	* to save cpu time.
1057	*/	1020	*/
1058	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1021	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1059	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1022	otmp->update_stats ();
1060	fix_player(otmp);
1061		1023
1062	if(op->above!=NULL)	1024	if (above)
1063	op->above->below=op->below;	1025	above->below = below;
1064	else	1026	else
1065	op->env->inv=op->below;	1027	env->inv = below;
1066		1028
1067	if(op->below!=NULL)	1029	if (below)
1068	op->below->above=op->above;	1030	below->above = above;
1069		1031
1070	/* we set up values so that it could be inserted into	1032	/* we set up values so that it could be inserted into
1071	* the map, but we don't actually do that - it is up	1033	* the map, but we don't actually do that - it is up
1072	* to the caller to decide what we want to do.	1034	* to the caller to decide what we want to do.
		1035	*/
		1036	x = env->x, y = env->y;
		1037	map = env->map;
		1038	above = 0, below = 0;
		1039	env = 0;
		1040	}
		1041	else if (map)
		1042	{
		1043	if (type == PLAYER)
		1044	{
		1045	// leaving a spot always closes any open container on the ground
		1046	if (container && !container->env)
		1047	// this causes spurious floorbox updates, but it ensures
		1048	// that the CLOSE event is being sent.
		1049	close_container ();
		1050
		1051	--map->players;
		1052	map->touch ();
		1053	}
		1054
		1055	map->dirty = true;
		1056	mapspace &ms = this->ms ();
		1057
		1058	/* link the object above us */
		1059	if (above)
		1060	above->below = below;
		1061	else
		1062	ms.top = below; /* we were top, set new top */
		1063
		1064	/* Relink the object below us, if there is one */
		1065	if (below)
		1066	below->above = above;
		1067	else
		1068	{
		1069	/* Nothing below, which means we need to relink map object for this space
		1070	* use translated coordinates in case some oddness with map tiling is
		1071	* evident
1073	*/	1072	*/
1074	op->x=op->env->x,op->y=op->env->y;	1073	if (GET_MAP_OB (map, x, y) != this)
1075	op->map=op->env->map;	1074	LOG (llevError, "remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom? %s\n", debug_desc ());
1076	op->above=NULL,op->below=NULL;	1075
1077	op->env=NULL;	1076	ms.bot = above; /* goes on above it. */
		1077	}
		1078
		1079	above = 0;
		1080	below = 0;
		1081
		1082	if (map->in_memory == MAP_SAVING)
1078	return;	1083	return;
1079	}
1080		1084
1081	/* If we get here, we are removing it from a map */	1085	int check_walk_off = !flag [FLAG_NO_APPLY];
1082	if (op->map == NULL) return;
1083		1086
1084	x = op->x;	1087	if (object *pl = ms.player ())
1085	y = op->y;
1086	m = get_map_from_coord(op->map, &x, &y);
1087
1088	if (!m) {
1089	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1090	op->map->path, op->x, op->y);
1091	/* in old days, we used to set x and y to 0 and continue.
1092	* it seems if we get into this case, something is probablye
1093	* screwed up and should be fixed.
1094	*/
1095	abort();
1096	}
1097	if (op->map != m) {
1098	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1099	op->map->path, m->path, op->x, op->y, x, y);
1100	}
1101
1102	/* Re did the following section of code - it looks like it had
1103	* lots of logic for things we no longer care about
1104	*/
1105
1106	/* link the object above us */
1107	if (op->above)
1108	op->above->below=op->below;
1109	else
1110	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1111
1112	/* Relink the object below us, if there is one */
1113	if(op->below) {
1114	op->below->above=op->above;
1115	} else {
1116	/* Nothing below, which means we need to relink map object for this space
1117	* use translated coordinates in case some oddness with map tiling is
1118	* evident
1119	*/
1120	if(GET_MAP_OB(m,x,y)!=op) {
1121	dump_object(op);
1122	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);
1123	dump_object(GET_MAP_OB(m,x,y));
1124	LOG(llevError,"%s\n",errmsg);
1125	}	1088	{
1126	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1089	if (pl->container == this)
1127	}
1128	op->above=NULL;
1129	op->below=NULL;
1130
1131	if (op->map->in_memory == MAP_SAVING)
1132	return;
1133
1134	tag = op->count;
1135	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1136	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1137	/* No point updating the players look faces if he is the object
1138	* being removed.
1139	*/
1140
1141	if(tmp->type==PLAYER && tmp!=op) {
1142	/* If a container that the player is currently using somehow gets	1090	/* If a container that the player is currently using somehow gets
1143	* removed (most likely destroyed), update the player view	1091	* removed (most likely destroyed), update the player view
1144	* appropriately.	1092	* appropriately.
1145	*/	1093	*/
1146	if (tmp->container==op) {	1094	pl->close_container ();
1147	CLEAR_FLAG(op, FLAG_APPLIED);	1095
1148	tmp->container=NULL;	1096	pl->contr->ns->floorbox_update ();
		1097	}
		1098
		1099	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1100	{
		1101	/* No point updating the players look faces if he is the object
		1102	* being removed.
		1103	*/
		1104
		1105	/* See if object moving off should effect something */
		1106	if (check_walk_off
		1107	&& ((move_type & tmp->move_off)
		1108	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1109	{
		1110	move_apply (tmp, this, 0);
		1111
		1112	if (destroyed ())
		1113	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1149	}	1114	}
1150	tmp->contr->socket.update_look=1;	1115
		1116	last = tmp;
1151	}	1117	}
1152	/* See if player moving off should effect something */
1153	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1154	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1155		1118
1156	move_apply(tmp, op, NULL);
1157	if (was_destroyed (op, tag)) {
1158	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1159	"leaving object\n", &tmp->name, &tmp->arch->name);
1160	}
1161	}
1162
1163	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1164
1165	if(tmp->above == tmp)
1166	tmp->above = NULL;
1167	last=tmp;
1168	}
1169	/* last == NULL of there are no objects on this space */	1119	/* last == NULL if there are no objects on this space */
1170	if (last==NULL) {	1120	//TODO: this makes little sense, why only update the topmost object?
1171	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1121	if (!last)
1172	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1122	map->at (x, y).flags_ = 0;
1173	* those out anyways, and if there are any flags set right now, they won't
1174	* be correct anyways.
1175	*/
1176	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1177	update_position(op->map, op->x, op->y);
1178	}
1179	else	1123	else
1180	update_object(last, UP_OBJ_REMOVE);	1124	update_object (last, UP_OBJ_REMOVE);
1181		1125
1182	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1126	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1183	update_all_los(op->map, op->x, op->y);	1127	update_all_los (map, x, y);
1184		1128	}
1185	}	1129	}
1186		1130
1187	/*	1131	/*
1188	* merge_ob(op,top):	1132	* merge_ob(op,top):
1189	*	1133	*
1190	* This function goes through all objects below and including top, and	1134	* This function goes through all objects below and including top, and
1191	* merges op to the first matching object.	1135	* merges op to the first matching object.
1192	* If top is NULL, it is calculated.	1136	* If top is NULL, it is calculated.
1193	* Returns pointer to object if it succeded in the merge, otherwise NULL	1137	* Returns pointer to object if it succeded in the merge, otherwise NULL
1194	*/	1138	*/
1195		1139	object *
1196	object *merge_ob(object *op, object *top) {	1140	merge_ob (object *op, object *top)
		1141	{
1197	if(!op->nrof)	1142	if (!op->nrof)
1198	return 0;	1143	return 0;
1199	if(top==NULL)	1144
		1145	if (top)
1200	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1146	for (top = op; top && top->above; top = top->above)
		1147	;
		1148
1201	for(;top!=NULL;top=top->below) {	1149	for (; top; top = top->below)
		1150	{
1202	if(top==op)	1151	if (top == op)
1203	continue;	1152	continue;
1204	if (CAN_MERGE(op,top))	1153
1205	{	1154	if (object::can_merge (op, top))
		1155	{
1206	top->nrof+=op->nrof;	1156	top->nrof += op->nrof;
		1157
1207	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1158	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1208	op->weight = 0; /* Don't want any adjustements now */	1159	op->weight = 0; /* Don't want any adjustements now */
1209	remove_ob(op);	1160	op->destroy ();
1210	free_object(op);
1211	return top;	1161	return top;
1212	}	1162	}
1213	}	1163	}
		1164
1214	return NULL;	1165	return 0;
1215	}	1166	}
1216		1167
		1168	void
		1169	object::expand_tail ()
		1170	{
		1171	if (more)
		1172	return;
		1173
		1174	object *prev = this;
		1175
		1176	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1177	{
		1178	object *op = arch_to_object (at);
		1179
		1180	op->name = name;
		1181	op->name_pl = name_pl;
		1182	op->title = title;
		1183
		1184	op->head = this;
		1185	prev->more = op;
		1186
		1187	prev = op;
		1188	}
		1189	}
		1190
1217	/*	1191	/*
1218	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1192	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1219	* job preparing multi-part monsters	1193	* job preparing multi-part monsters.
1220	*/	1194	*/
		1195	object *
1221	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1196	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1222	object* tmp;	1197	{
1223	if (op->head)	1198	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1224	op=op->head;	1199	{
1225	for (tmp=op;tmp;tmp=tmp->more){
1226	tmp->x=x+tmp->arch->clone.x;	1200	tmp->x = x + tmp->arch->x;
1227	tmp->y=y+tmp->arch->clone.y;	1201	tmp->y = y + tmp->arch->y;
1228	}	1202	}
		1203
1229	return insert_ob_in_map (op, m, originator, flag);	1204	return insert_ob_in_map (op, m, originator, flag);
1230	}	1205	}
1231		1206
1232	/*	1207	/*
1233	* insert_ob_in_map (op, map, originator, flag):	1208	* insert_ob_in_map (op, map, originator, flag):
1234	* This function inserts the object in the two-way linked list	1209	* This function inserts the object in the two-way linked list
…		…
1247	* Return value:	1222	* Return value:
1248	* new object if 'op' was merged with other object	1223	* new object if 'op' was merged with other object
1249	* NULL if 'op' was destroyed	1224	* NULL if 'op' was destroyed
1250	* just 'op' otherwise	1225	* just 'op' otherwise
1251	*/	1226	*/
1252		1227	object *
1253	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1228	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1254	{	1229	{
		1230	assert (!op->flag [FLAG_FREED]);
		1231
1255	object *tmp, *top, *floor=NULL;	1232	object *top, *floor = NULL;
1256	sint16 x,y;
1257		1233
1258	if (QUERY_FLAG (op, FLAG_FREED)) {	1234	op->remove ();
1259	LOG (llevError, "Trying to insert freed object!\n");	1235
1260	return NULL;	1236	/* Ideally, the caller figures this out. However, it complicates a lot
		1237	* of areas of callers (eg, anything that uses find_free_spot would now
		1238	* need extra work
		1239	*/
		1240	if (!xy_normalise (m, op->x, op->y))
1261	}	1241	{
1262	if(m==NULL) {	1242	op->destroy ();
1263	dump_object(op);
1264	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1265	return op;	1243	return 0;
1266	}	1244	}
1267	if(out_of_map(m,op->x,op->y)) {	1245
1268	dump_object(op);	1246	if (object *more = op->more)
1269	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1247	if (!insert_ob_in_map (more, m, originator, flag))
1270	#ifdef MANY_CORES
1271	/* Better to catch this here, as otherwise the next use of this object
1272	* is likely to cause a crash. Better to find out where it is getting
1273	* improperly inserted.
1274	*/
1275	abort();
1276	#endif
1277	return op;	1248	return 0;
1278	}
1279	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1280	dump_object(op);
1281	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1282	return op;
1283	}
1284	if(op->more!=NULL) {
1285	/* The part may be on a different map. */
1286		1249
1287	object *more = op->more;	1250	CLEAR_FLAG (op, FLAG_REMOVED);
1288		1251
1289	/* We really need the caller to normalize coordinates - if	1252	op->map = m;
1290	* we set the map, that doesn't work if the location is within	1253	mapspace &ms = op->ms ();
1291	* a map and this is straddling an edge. So only if coordinate	1254
1292	* is clear wrong do we normalize it.	1255	/* this has to be done after we translate the coordinates.
		1256	*/
		1257	if (op->nrof && !(flag & INS_NO_MERGE))
		1258	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1259	if (object::can_merge (op, tmp))
1293	*/	1260	{
1294	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1261	op->nrof += tmp->nrof;
1295	more->map = get_map_from_coord(m, &more->x, &more->y);	1262	tmp->destroy ();
1296	} else if (!more->map) {
1297	/* For backwards compatibility - when not dealing with tiled maps,
1298	* more->map should always point to the parent.
1299	*/
1300	more->map = m;
1301	}	1263	}
1302		1264
1303	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1265	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1304	if ( ! op->head)	1266	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1305	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1267
1306	return NULL;	1268	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1269	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1270
		1271	if (flag & INS_BELOW_ORIGINATOR)
		1272	{
		1273	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1274	{
		1275	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1276	abort ();
1307	}	1277	}
		1278
		1279	op->above = originator;
		1280	op->below = originator->below;
		1281
		1282	if (op->below)
		1283	op->below->above = op;
		1284	else
		1285	ms.bot = op;
		1286
		1287	/* since *below* originator, no need to update top */
		1288	originator->below = op;
		1289	}
		1290	else
1308	}	1291	{
1309	CLEAR_FLAG(op,FLAG_REMOVED);	1292	top = ms.bot;
1310		1293
1311	/* Ideally, the caller figures this out. However, it complicates a lot	1294	/* If there are other objects, then */
1312	* of areas of callers (eg, anything that uses find_free_spot would now	1295	if ((!(flag & INS_MAP_LOAD)) && top)
1313	* need extra work	1296	{
1314	*/	1297	object *last = 0;
1315	op->map=get_map_from_coord(m, &op->x, &op->y);
1316	x = op->x;
1317	y = op->y;
1318		1298
1319	/* this has to be done after we translate the coordinates.	1299	/*
1320	*/	1300	* If there are multiple objects on this space, we do some trickier handling.
1321	if(op->nrof && !(flag & INS_NO_MERGE)) {	1301	* We've already dealt with merging if appropriate.
1322	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1302	* Generally, we want to put the new object on top. But if
1323	if (CAN_MERGE(op,tmp)) {	1303	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1324	op->nrof+=tmp->nrof;	1304	* floor, we want to insert above that and no further.
1325	remove_ob(tmp);	1305	* Also, if there are spell objects on this space, we stop processing
1326	free_object(tmp);	1306	* once we get to them. This reduces the need to traverse over all of
		1307	* them when adding another one - this saves quite a bit of cpu time
		1308	* when lots of spells are cast in one area. Currently, it is presumed
		1309	* that flying non pickable objects are spell objects.
		1310	*/
		1311	for (top = ms.bot; top; top = top->above)
		1312	{
		1313	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1314	floor = top;
		1315
		1316	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1317	{
		1318	/* We insert above top, so we want this object below this */
		1319	top = top->below;
		1320	break;
		1321	}
		1322
		1323	last = top;
1327	}	1324	}
1328	}
1329		1325
1330	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1326	/* Don't want top to be NULL, so set it to the last valid object */
1331	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1327	top = last;
1332	if (!QUERY_FLAG(op, FLAG_ALIVE))
1333	CLEAR_FLAG(op, FLAG_NO_STEAL);
1334		1328
1335	if (flag & INS_BELOW_ORIGINATOR) {	1329	/* We let update_position deal with figuring out what the space
1336	if (originator->map != op->map || originator->x != op->x ||	1330	* looks like instead of lots of conditions here.
1337	originator->y != op->y) {	1331	* makes things faster, and effectively the same result.
1338	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1332	*/
1339	abort();	1333
		1334	/* Have object 'fall below' other objects that block view.
		1335	* Unless those objects are exits.
		1336	* If INS_ON_TOP is used, don't do this processing
		1337	* Need to find the object that in fact blocks view, otherwise
		1338	* stacking is a bit odd.
		1339	*/
		1340	if (!(flag & INS_ON_TOP)
		1341	&& ms.flags () & P_BLOCKSVIEW
		1342	&& (op->face && !faces [op->face].visibility))
		1343	{
		1344	for (last = top; last != floor; last = last->below)
		1345	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1346	break;
		1347
		1348	/* Check to see if we found the object that blocks view,
		1349	* and make sure we have a below pointer for it so that
		1350	* we can get inserted below this one, which requires we
		1351	* set top to the object below us.
		1352	*/
		1353	if (last && last->below && last != floor)
		1354	top = last->below;
		1355	}
		1356	} /* If objects on this space */
		1357	if (flag & INS_MAP_LOAD)
		1358	top = ms.top;
		1359
		1360	if (flag & INS_ABOVE_FLOOR_ONLY)
		1361	top = floor;
		1362
		1363	/* Top is the object that our object (op) is going to get inserted above.
		1364	*/
		1365
		1366	/* First object on this space */
		1367	if (!top)
		1368	{
		1369	op->above = ms.bot;
		1370
		1371	if (op->above)
		1372	op->above->below = op;
		1373
		1374	op->below = 0;
		1375	ms.bot = op;
1340	}	1376	}
1341	op->above = originator;
1342	op->below = originator->below;
1343	if (op->below) op->below->above = op;
1344	else SET_MAP_OB(op->map, op->x, op->y, op);
1345	/* since *below* originator, no need to update top */
1346	originator->below = op;
1347	} else {	1377	else
1348	/* If there are other objects, then */
1349	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1350	object *last=NULL;
1351	/*
1352	* If there are multiple objects on this space, we do some trickier handling.
1353	* We've already dealt with merging if appropriate.
1354	* Generally, we want to put the new object on top. But if
1355	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1356	* floor, we want to insert above that and no further.
1357	* Also, if there are spell objects on this space, we stop processing
1358	* once we get to them. This reduces the need to traverse over all of
1359	* them when adding another one - this saves quite a bit of cpu time
1360	* when lots of spells are cast in one area. Currently, it is presumed
1361	* that flying non pickable objects are spell objects.
1362	*/
1363
1364	while (top != NULL) {
1365	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1366	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1367	if (QUERY_FLAG(top, FLAG_NO_PICK)
1368	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1369	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1370	{
1371	/* We insert above top, so we want this object below this */
1372	top=top->below;
1373	break;
1374	}
1375	last = top;
1376	top = top->above;
1377	}
1378	/* Don't want top to be NULL, so set it to the last valid object */
1379	top = last;
1380
1381	/* We let update_position deal with figuring out what the space
1382	* looks like instead of lots of conditions here.
1383	* makes things faster, and effectively the same result.
1384	*/
1385
1386	/* Have object 'fall below' other objects that block view.
1387	* Unless those objects are exits, type 66
1388	* If INS_ON_TOP is used, don't do this processing
1389	* Need to find the object that in fact blocks view, otherwise
1390	* stacking is a bit odd.
1391	*/
1392	if (!(flag & INS_ON_TOP) &&
1393	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1394	(op->face && !op->face->visibility)) {
1395	for (last=top; last != floor; last=last->below)
1396	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1397	/* Check to see if we found the object that blocks view,
1398	* and make sure we have a below pointer for it so that
1399	* we can get inserted below this one, which requires we
1400	* set top to the object below us.
1401	*/
1402	if (last && last->below && last != floor) top=last->below;
1403	}
1404	} /* If objects on this space */
1405	if (flag & INS_MAP_LOAD)
1406	top = GET_MAP_TOP(op->map,op->x,op->y);
1407	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1408
1409	/* Top is the object that our object (op) is going to get inserted above.
1410	*/
1411
1412	/* First object on this space */
1413	if (!top) {
1414	op->above = GET_MAP_OB(op->map, op->x, op->y);
1415	if (op->above) op->above->below = op;
1416	op->below = NULL;
1417	SET_MAP_OB(op->map, op->x, op->y, op);
1418	} else { /* get inserted into the stack above top */	1378	{ /* get inserted into the stack above top */
1419	op->above = top->above;	1379	op->above = top->above;
		1380
		1381	if (op->above)
1420	if (op->above) op->above->below = op;	1382	op->above->below = op;
		1383
1421	op->below = top;	1384	op->below = top;
1422	top->above = op;	1385	top->above = op;
1423	}	1386	}
		1387
1424	if (op->above==NULL)	1388	if (!op->above)
1425	SET_MAP_TOP(op->map,op->x, op->y, op);	1389	ms.top = op;
1426	} /* else not INS_BELOW_ORIGINATOR */	1390	} /* else not INS_BELOW_ORIGINATOR */
1427		1391
1428	if(op->type==PLAYER)	1392	if (op->type == PLAYER)
		1393	{
1429	op->contr->do_los=1;	1394	op->contr->do_los = 1;
		1395	++op->map->players;
		1396	op->map->touch ();
		1397	}
1430		1398
1431	/* If we have a floor, we know the player, if any, will be above	1399	op->map->dirty = true;
1432	* it, so save a few ticks and start from there.	1400
1433	*/
1434	if (!(flag & INS_MAP_LOAD))	1401	if (!(flag & INS_MAP_LOAD))
1435	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {	1402	if (object *pl = ms.player ())
1436	if (tmp->type == PLAYER)	1403	pl->contr->ns->floorbox_update ();
1437	tmp->contr->socket.update_look=1;
1438	}
1439		1404
1440	/* If this object glows, it may affect lighting conditions that are	1405	/* If this object glows, it may affect lighting conditions that are
1441	* visible to others on this map. But update_all_los is really	1406	* visible to others on this map. But update_all_los is really
1442	* an inefficient way to do this, as it means los for all players	1407	* an inefficient way to do this, as it means los for all players
1443	* on the map will get recalculated. The players could very well	1408	* on the map will get recalculated. The players could very well
1444	* be far away from this change and not affected in any way -	1409	* be far away from this change and not affected in any way -
1445	* this should get redone to only look for players within range,	1410	* this should get redone to only look for players within range,
1446	* or just updating the P_NEED_UPDATE for spaces within this area	1411	* or just updating the P_UPTODATE for spaces within this area
1447	* of effect may be sufficient.	1412	* of effect may be sufficient.
1448	*/	1413	*/
1449	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1414	if (op->map->darkness && (op->glow_radius != 0))
1450	update_all_los(op->map, op->x, op->y);	1415	update_all_los (op->map, op->x, op->y);
1451		1416
1452
1453	/* updates flags (blocked, alive, no magic, etc) for this map space */	1417	/* updates flags (blocked, alive, no magic, etc) for this map space */
1454	update_object(op,UP_OBJ_INSERT);	1418	update_object (op, UP_OBJ_INSERT);
1455		1419
		1420	INVOKE_OBJECT (INSERT, op);
1456		1421
1457	/* Don't know if moving this to the end will break anything. However,	1422	/* Don't know if moving this to the end will break anything. However,
1458	* we want to have update_look set above before calling this.	1423	* we want to have floorbox_update called before calling this.
1459	*	1424	*
1460	* check_move_on() must be after this because code called from	1425	* check_move_on() must be after this because code called from
1461	* check_move_on() depends on correct map flags (so functions like	1426	* check_move_on() depends on correct map flags (so functions like
1462	* blocked() and wall() work properly), and these flags are updated by	1427	* blocked() and wall() work properly), and these flags are updated by
1463	* update_object().	1428	* update_object().
1464	*/	1429	*/
1465		1430
1466	/* if this is not the head or flag has been passed, don't check walk on status */	1431	/* if this is not the head or flag has been passed, don't check walk on status */
1467
1468	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1432	if (!(flag & INS_NO_WALK_ON) && op->head_ () == op)
		1433	{
1469	if (check_move_on(op, originator))	1434	if (check_move_on (op, originator))
1470	return NULL;	1435	return 0;
1471		1436
1472	/* If we are a multi part object, lets work our way through the check	1437	/* If we are a multi part object, lets work our way through the check
1473	* walk on's.	1438	* walk on's.
1474	*/	1439	*/
1475	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1440	for (object *tmp = op->more; tmp; tmp = tmp->more)
1476	if (check_move_on (tmp, originator))	1441	if (check_move_on (tmp, originator))
1477	return NULL;	1442	return 0;
1478	}	1443	}
		1444
1479	return op;	1445	return op;
1480	}	1446	}
1481		1447
1482	/* this function inserts an object in the map, but if it	1448	/* this function inserts an object in the map, but if it
1483	* finds an object of its own type, it'll remove that one first.	1449	* finds an object of its own type, it'll remove that one first.
1484	* op is the object to insert it under: supplies x and the map.	1450	* op is the object to insert it under: supplies x and the map.
1485	*/	1451	*/
		1452	void
1486	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1453	replace_insert_ob_in_map (const char *arch_string, object *op)
1487	object *tmp;	1454	{
1488	object *tmp1;	1455	object *tmp, *tmp1;
1489		1456
1490	/* first search for itself and remove any old instances */	1457	/* first search for itself and remove any old instances */
1491		1458
1492	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1459	for (tmp = op->ms ().bot; tmp; tmp = tmp->above)
1493	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1460	if (!strcmp (tmp->arch->archname, arch_string)) /* same archetype */
1494	remove_ob(tmp);	1461	tmp->destroy ();
1495	free_object(tmp);
1496	}
1497	}
1498		1462
1499	tmp1=arch_to_object(find_archetype(arch_string));	1463	tmp1 = arch_to_object (archetype::find (arch_string));
1500		1464
1501		1465	tmp1->x = op->x;
1502	tmp1->x = op->x; tmp1->y = op->y;	1466	tmp1->y = op->y;
1503	insert_ob_in_map(tmp1,op->map,op,0);	1467	insert_ob_in_map (tmp1, op->map, op, 0);
1504	}	1468	}
		1469
		1470	object *
		1471	object::insert_at (object *where, object *originator, int flags)
		1472	{
		1473	return where->map->insert (this, where->x, where->y, originator, flags);
		1474	}
1505		1475
1506	/*	1476	/*
1507	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1477	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1508	* is returned contains nr objects, and the remaining parts contains	1478	* is returned contains nr objects, and the remaining parts contains
1509	* the rest (or is removed and freed if that number is 0).	1479	* the rest (or is removed and freed if that number is 0).
1510	* On failure, NULL is returned, and the reason put into the	1480	* On failure, NULL is returned, and the reason put into the
1511	* global static errmsg array.	1481	* global static errmsg array.
1512	*/	1482	*/
1513		1483	object *
1514	object *get_split_ob(object *orig_ob, uint32 nr) {	1484	get_split_ob (object *orig_ob, uint32 nr)
		1485	{
1515	object *newob;	1486	object *newob;
1516	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1487	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1517		1488
1518	if(orig_ob->nrof<nr) {	1489	if (orig_ob->nrof < nr)
1519	sprintf(errmsg,"There are only %d %ss.",	1490	{
1520	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);	1491	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
1521	return NULL;	1492	return NULL;
1522	}	1493	}
		1494
1523	newob = object_create_clone(orig_ob);	1495	newob = object_create_clone (orig_ob);
		1496
1524	if((orig_ob->nrof-=nr)<1) {	1497	if ((orig_ob->nrof -= nr) < 1)
1525	if ( ! is_removed)	1498	orig_ob->destroy (1);
1526	remove_ob(orig_ob);
1527	free_object2(orig_ob, 1);
1528	}
1529	else if ( ! is_removed) {	1499	else if (!is_removed)
		1500	{
1530	if(orig_ob->env!=NULL)	1501	if (orig_ob->env != NULL)
1531	sub_weight (orig_ob->env,orig_ob->weight*nr);	1502	sub_weight (orig_ob->env, orig_ob->weight * nr);
1532	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {	1503	if (orig_ob->env == NULL && orig_ob->map->in_memory != MAP_IN_MEMORY)
		1504	{
1533	strcpy(errmsg, "Tried to split object whose map is not in memory.");	1505	strcpy (errmsg, "Tried to split object whose map is not in memory.");
1534	LOG(llevDebug,
1535	"Error, Tried to split object whose map is not in memory.\n");	1506	LOG (llevDebug, "Error, Tried to split object whose map is not in memory.\n");
1536	return NULL;	1507	return NULL;
1537	}	1508	}
1538	}	1509	}
		1510
1539	newob->nrof=nr;	1511	newob->nrof = nr;
1540		1512
1541	return newob;	1513	return newob;
1542	}	1514	}
1543		1515
1544	/*	1516	/*
1545	* decrease_ob_nr(object, number) decreases a specified number from	1517	* decrease_ob_nr(object, number) decreases a specified number from
1546	* the amount of an object. If the amount reaches 0, the object	1518	* the amount of an object. If the amount reaches 0, the object
1547	* is subsequently removed and freed.	1519	* is subsequently removed and freed.
1548	*	1520	*
1549	* Return value: 'op' if something is left, NULL if the amount reached 0	1521	* Return value: 'op' if something is left, NULL if the amount reached 0
1550	*/	1522	*/
1551		1523	object *
1552	object *decrease_ob_nr (object *op, uint32 i)	1524	decrease_ob_nr (object *op, uint32 i)
1553	{	1525	{
1554	object *tmp;	1526	object *tmp;
1555	player *pl;
1556		1527
1557	if (i == 0) /* objects with op->nrof require this check */	1528	if (i == 0) /* objects with op->nrof require this check */
1558	return op;	1529	return op;
1559		1530
1560	if (i > op->nrof)	1531	if (i > op->nrof)
1561	i = op->nrof;	1532	i = op->nrof;
1562		1533
1563	if (QUERY_FLAG (op, FLAG_REMOVED))	1534	if (QUERY_FLAG (op, FLAG_REMOVED))
		1535	op->nrof -= i;
		1536	else if (op->env)
		1537	{
		1538	/* is this object in the players inventory, or sub container
		1539	* therein?
		1540	*/
		1541	tmp = op->in_player ();
		1542	/* nope. Is this a container the player has opened?
		1543	* If so, set tmp to that player.
		1544	* IMO, searching through all the players will mostly
		1545	* likely be quicker than following op->env to the map,
		1546	* and then searching the map for a player.
		1547	*/
		1548	if (!tmp)
		1549	for_all_players (pl)
		1550	if (pl->ob->container == op->env)
		1551	{
		1552	tmp = pl->ob;
		1553	break;
		1554	}
		1555
		1556	if (i < op->nrof)
		1557	{
		1558	sub_weight (op->env, op->weight * i);
		1559	op->nrof -= i;
		1560	if (tmp)
		1561	esrv_send_item (tmp, op);
		1562	}
		1563	else
		1564	{
		1565	op->remove ();
		1566	op->nrof = 0;
		1567	if (tmp)
		1568	esrv_del_item (tmp->contr, op->count);
		1569	}
1564	{	1570	}
		1571	else
		1572	{
		1573	object *above = op->above;
		1574
		1575	if (i < op->nrof)
1565	op->nrof -= i;	1576	op->nrof -= i;
1566	}	1577	else
1567	else if (op->env != NULL)
1568	{
1569	/* is this object in the players inventory, or sub container
1570	* therein?
1571	*/	1578	{
1572	tmp = is_player_inv (op->env);	1579	op->remove ();
1573	/* nope. Is this a container the player has opened?	1580	op->nrof = 0;
1574	* If so, set tmp to that player.
1575	* IMO, searching through all the players will mostly
1576	* likely be quicker than following op->env to the map,
1577	* and then searching the map for a player.
1578	*/
1579	if (!tmp) {
1580	for (pl=first_player; pl; pl=pl->next)
1581	if (pl->ob->container == op->env) break;
1582	if (pl) tmp=pl->ob;
1583	else tmp=NULL;
1584	}	1581	}
1585		1582
1586	if (i < op->nrof) {
1587	sub_weight (op->env, op->weight * i);
1588	op->nrof -= i;
1589	if (tmp) {
1590	esrv_send_item(tmp, op);
1591	}
1592	} else {
1593	remove_ob (op);
1594	op->nrof = 0;
1595	if (tmp) {
1596	esrv_del_item(tmp->contr, op->count);
1597	}
1598	}
1599	}
1600	else
1601	{
1602	object *above = op->above;
1603
1604	if (i < op->nrof) {
1605	op->nrof -= i;
1606	} else {
1607	remove_ob (op);
1608	op->nrof = 0;
1609	}
1610	/* Since we just removed op, op->above is null */	1583	/* Since we just removed op, op->above is null */
1611	for (tmp = above; tmp != NULL; tmp = tmp->above)	1584	for (tmp = above; tmp; tmp = tmp->above)
1612	if (tmp->type == PLAYER) {	1585	if (tmp->type == PLAYER)
		1586	{
1613	if (op->nrof)	1587	if (op->nrof)
1614	esrv_send_item(tmp, op);	1588	esrv_send_item (tmp, op);
1615	else	1589	else
1616	esrv_del_item(tmp->contr, op->count);	1590	esrv_del_item (tmp->contr, op->count);
1617	}	1591	}
1618	}	1592	}
1619		1593
1620	if (op->nrof) {	1594	if (op->nrof)
1621	return op;	1595	return op;
1622	} else {	1596	else
1623	free_object (op);	1597	{
		1598	op->destroy ();
1624	return NULL;	1599	return 0;
1625	}	1600	}
1626	}	1601	}
1627		1602
1628	/*	1603	/*
1629	* add_weight(object, weight) adds the specified weight to an object,	1604	* add_weight(object, weight) adds the specified weight to an object,
1630	* and also updates how much the environment(s) is/are carrying.	1605	* and also updates how much the environment(s) is/are carrying.
1631	*/	1606	*/
1632		1607	void
1633	void add_weight (object *op, signed long weight) {	1608	add_weight (object *op, signed long weight)
		1609	{
1634	while (op!=NULL) {	1610	while (op != NULL)
		1611	{
1635	if (op->type == CONTAINER) {	1612	if (op->type == CONTAINER)
1636	weight=(signed long)(weight*(100-op->stats.Str)/100);	1613	weight = (signed long) (weight * (100 - op->stats.Str) / 100);
1637	}	1614
1638	op->carrying+=weight;	1615	op->carrying += weight;
1639	op=op->env;	1616	op = op->env;
1640	}	1617	}
1641	}	1618	}
1642		1619
		1620	object *
		1621	insert_ob_in_ob (object *op, object *where)
		1622	{
		1623	if (!where)
		1624	{
		1625	char *dump = dump_object (op);
		1626	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
		1627	free (dump);
		1628	return op;
		1629	}
		1630
		1631	if (where->head_ () != where)
		1632	{
		1633	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
		1634	where = where->head;
		1635	}
		1636
		1637	return where->insert (op);
		1638	}
		1639
1643	/*	1640	/*
1644	* insert_ob_in_ob(op,environment):	1641	* env->insert (op)
1645	* This function inserts the object op in the linked list	1642	* This function inserts the object op in the linked list
1646	* inside the object environment.	1643	* inside the object environment.
1647	*	1644	*
1648	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1649	* the inventory at the last position or next to other objects of the same
1650	* type.
1651	* Frank: Now sorted by type, archetype and magic!
1652	*
1653	* The function returns now pointer to inserted item, and return value can	1645	* The function returns now pointer to inserted item, and return value can
1654	* be != op, if items are merged. -Tero	1646	* be != op, if items are merged. -Tero
1655	*/	1647	*/
1656		1648	object *
1657	object *insert_ob_in_ob(object *op,object *where) {	1649	object::insert (object *op)
1658	object *tmp, *otmp;	1650	{
1659
1660	if(!QUERY_FLAG(op,FLAG_REMOVED)) {	1651	if (!QUERY_FLAG (op, FLAG_REMOVED))
1661	dump_object(op);	1652	op->remove ();
1662	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);	1653
1663	return op;
1664	}
1665	if(where==NULL) {
1666	dump_object(op);
1667	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1668	return op;
1669	}
1670	if (where->head) {
1671	LOG(llevDebug,
1672	"Warning: Tried to insert object wrong part of multipart object.\n");
1673	where = where->head;
1674	}
1675	if (op->more) {	1654	if (op->more)
		1655	{
1676	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1656	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1677	&op->name, op->count);
1678	return op;	1657	return op;
1679	}	1658	}
		1659
1680	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1660	CLEAR_FLAG (op, FLAG_OBJ_ORIGINAL);
1681	CLEAR_FLAG(op, FLAG_REMOVED);	1661	CLEAR_FLAG (op, FLAG_REMOVED);
		1662
1682	if(op->nrof) {	1663	if (op->nrof)
1683	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1664	{
1684	if ( CAN_MERGE(tmp,op) ) {	1665	for (object *tmp = inv; tmp; tmp = tmp->below)
		1666	if (object::can_merge (tmp, op))
		1667	{
1685	/* return the original object and remove inserted object	1668	/* return the original object and remove inserted object
1686	(client needs the original object) */	1669	(client needs the original object) */
1687	tmp->nrof += op->nrof;	1670	tmp->nrof += op->nrof;
1688	/* Weight handling gets pretty funky. Since we are adding to	1671	/* Weight handling gets pretty funky. Since we are adding to
1689	* tmp->nrof, we need to increase the weight.	1672	* tmp->nrof, we need to increase the weight.
1690	*/	1673	*/
1691	add_weight (where, op->weight*op->nrof);	1674	add_weight (this, op->weight * op->nrof);
1692	SET_FLAG(op, FLAG_REMOVED);	1675	SET_FLAG (op, FLAG_REMOVED);
1693	free_object(op); /* free the inserted object */	1676	op->destroy (); /* free the inserted object */
1694	op = tmp;	1677	op = tmp;
1695	remove_ob (op); /* and fix old object's links */	1678	op->remove (); /* and fix old object's links */
1696	CLEAR_FLAG(op, FLAG_REMOVED);	1679	CLEAR_FLAG (op, FLAG_REMOVED);
1697	break;	1680	break;
1698	}	1681	}
1699		1682
1700	/* I assume combined objects have no inventory	1683	/* I assume combined objects have no inventory
1701	* We add the weight - this object could have just been removed	1684	* We add the weight - this object could have just been removed
1702	* (if it was possible to merge). calling remove_ob will subtract	1685	* (if it was possible to merge). calling remove_ob will subtract
1703	* the weight, so we need to add it in again, since we actually do	1686	* the weight, so we need to add it in again, since we actually do
1704	* the linking below	1687	* the linking below
1705	*/	1688	*/
1706	add_weight (where, op->weight*op->nrof);	1689	add_weight (this, op->weight * op->nrof);
		1690	}
1707	} else	1691	else
1708	add_weight (where, (op->weight+op->carrying));	1692	add_weight (this, (op->weight + op->carrying));
1709		1693
1710	otmp=is_player_inv(where);	1694	if (object *otmp = this->in_player ())
1711	if (otmp&&otmp->contr!=NULL) {
1712	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1695	if (otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1713	fix_player(otmp);	1696	otmp->update_stats ();
1714	}
1715		1697
1716	op->map=NULL;	1698	op->owner = 0; // its his/hers now. period.
1717	op->env=where;	1699	op->map = 0;
		1700	op->env = this;
1718	op->above=NULL;	1701	op->above = 0;
1719	op->below=NULL;	1702	op->below = 0;
1720	op->x=0,op->y=0;	1703	op->x = op->y = 0;
1721		1704
1722	/* reset the light list and los of the players on the map */	1705	/* reset the light list and los of the players on the map */
1723	if((op->glow_radius!=0)&&where->map)	1706	if (op->glow_radius && map)
1724	{	1707	{
1725	#ifdef DEBUG_LIGHTS	1708	#ifdef DEBUG_LIGHTS
1726	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1709	LOG (llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n", op->name);
1727	op->name);
1728	#endif /* DEBUG_LIGHTS */	1710	#endif /* DEBUG_LIGHTS */
1729	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);	1711	if (map->darkness)
		1712	update_all_los (map, x, y);
1730	}	1713	}
1731		1714
1732	/* Client has no idea of ordering so lets not bother ordering it here.	1715	/* Client has no idea of ordering so lets not bother ordering it here.
1733	* It sure simplifies this function...	1716	* It sure simplifies this function...
1734	*/	1717	*/
1735	if (where->inv==NULL)	1718	if (!inv)
1736	where->inv=op;	1719	inv = op;
1737	else {	1720	else
		1721	{
1738	op->below = where->inv;	1722	op->below = inv;
1739	op->below->above = op;	1723	op->below->above = op;
1740	where->inv = op;	1724	inv = op;
1741	}	1725	}
		1726
		1727	INVOKE_OBJECT (INSERT, this);
		1728
1742	return op;	1729	return op;
1743	}	1730	}
1744		1731
1745	/*	1732	/*
1746	* Checks if any objects has a move_type that matches objects	1733	* Checks if any objects has a move_type that matches objects
…		…
1760	*	1747	*
1761	* MSW 2001-07-08: Check all objects on space, not just those below	1748	* MSW 2001-07-08: Check all objects on space, not just those below
1762	* object being inserted. insert_ob_in_map may not put new objects	1749	* object being inserted. insert_ob_in_map may not put new objects
1763	* on top.	1750	* on top.
1764	*/	1751	*/
1765		1752	int
1766	int check_move_on (object *op, object *originator)	1753	check_move_on (object *op, object *originator)
1767	{	1754	{
1768	object *tmp;	1755	object *tmp;
1769	tag_t tag;
1770	mapstruct *m=op->map;	1756	maptile *m = op->map;
1771	int x=op->x, y=op->y;	1757	int x = op->x, y = op->y;
		1758
1772	MoveType move_on, move_slow, move_block;	1759	MoveType move_on, move_slow, move_block;
1773		1760
1774	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1761	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1775	return 0;	1762	return 0;
1776		1763
1777	tag = op->count;
1778
1779	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1764	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1780	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1765	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1781	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1766	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1782		1767
1783	/* if nothing on this space will slow op down or be applied,	1768	/* if nothing on this space will slow op down or be applied,
1784	* no need to do checking below. have to make sure move_type	1769	* no need to do checking below. have to make sure move_type
1785	* is set, as lots of objects don't have it set - we treat that	1770	* is set, as lots of objects don't have it set - we treat that
1786	* as walking.	1771	* as walking.
1787	*/	1772	*/
1788	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1773	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1789	return 0;	1774	return 0;
1790		1775
1791	/* This is basically inverse logic of that below - basically,	1776	/* This is basically inverse logic of that below - basically,
1792	* if the object can avoid the move on or slow move, they do so,	1777	* if the object can avoid the move on or slow move, they do so,
1793	* but can't do it if the alternate movement they are using is	1778	* but can't do it if the alternate movement they are using is
1794	* blocked. Logic on this seems confusing, but does seem correct.	1779	* blocked. Logic on this seems confusing, but does seem correct.
1795	*/	1780	*/
1796	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1781	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1797	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1782	return 0;
1798		1783
1799	/* The objects have to be checked from top to bottom.	1784	/* The objects have to be checked from top to bottom.
1800	* Hence, we first go to the top:	1785	* Hence, we first go to the top:
1801	*/	1786	*/
1802		1787
1803	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1788	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1804	tmp->above!=NULL; tmp=tmp->above) {	1789	{
1805	/* Trim the search when we find the first other spell effect	1790	/* Trim the search when we find the first other spell effect
1806	* this helps performance so that if a space has 50 spell objects,	1791	* this helps performance so that if a space has 50 spell objects,
1807	* we don't need to check all of them.	1792	* we don't need to check all of them.
1808	*/	1793	*/
1809	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1794	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1795	break;
		1796	}
		1797
		1798	for (; tmp; tmp = tmp->below)
1810	}	1799	{
1811	for(;tmp!=NULL; tmp=tmp->below) {	1800	if (tmp == op)
1812	if (tmp == op) continue; /* Can't apply yourself */	1801	continue; /* Can't apply yourself */
1813		1802
1814	/* Check to see if one of the movement types should be slowed down.	1803	/* Check to see if one of the movement types should be slowed down.
1815	* Second check makes sure that the movement types not being slowed	1804	* Second check makes sure that the movement types not being slowed
1816	* (~slow_move) is not blocked on this space - just because the	1805	* (~slow_move) is not blocked on this space - just because the
1817	* space doesn't slow down swimming (for example), if you can't actually	1806	* space doesn't slow down swimming (for example), if you can't actually
1818	* swim on that space, can't use it to avoid the penalty.	1807	* swim on that space, can't use it to avoid the penalty.
1819	*/	1808	*/
1820	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1809	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1810	{
1821	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1811	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1822	((op->move_type & tmp->move_slow) &&
1823	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1812	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1813	{
1824		1814
1825	float diff;	1815	float
1826
1827	diff = tmp->move_slow_penalty*FABS(op->speed);	1816	diff = tmp->move_slow_penalty * fabs (op->speed);
		1817
1828	if (op->type == PLAYER) {	1818	if (op->type == PLAYER)
1829	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1819	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1830	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1820	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1831	diff /= 4.0;	1821	diff /= 4.0;
1832	}	1822
1833	}
1834	op->speed_left -= diff;	1823	op->speed_left -= diff;
1835	}	1824	}
1836	}	1825	}
1837		1826
1838	/* Basically same logic as above, except now for actual apply. */	1827	/* Basically same logic as above, except now for actual apply. */
1839	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1828	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1840	((op->move_type & tmp->move_on) &&
1841	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1829	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1842		1830	{
1843	move_apply(tmp, op, originator);	1831	move_apply (tmp, op, originator);
		1832
1844	if (was_destroyed (op, tag))	1833	if (op->destroyed ())
1845	return 1;	1834	return 1;
1846		1835
1847	/* what the person/creature stepped onto has moved the object	1836	/* what the person/creature stepped onto has moved the object
1848	* someplace new. Don't process any further - if we did,	1837	* someplace new. Don't process any further - if we did,
1849	* have a feeling strange problems would result.	1838	* have a feeling strange problems would result.
1850	*/	1839	*/
1851	if (op->map != m || op->x != x || op->y != y) return 0;	1840	if (op->map != m || op->x != x || op->y != y)
		1841	return 0;
1852	}	1842	}
1853	}	1843	}
		1844
1854	return 0;	1845	return 0;
1855	}	1846	}
1856		1847
1857	/*	1848	/*
1858	* present_arch(arch, map, x, y) searches for any objects with	1849	* present_arch(arch, map, x, y) searches for any objects with
1859	* a matching archetype at the given map and coordinates.	1850	* a matching archetype at the given map and coordinates.
1860	* The first matching object is returned, or NULL if none.	1851	* The first matching object is returned, or NULL if none.
1861	*/	1852	*/
1862		1853	object *
1863	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1854	present_arch (const archetype *at, maptile *m, int x, int y)
1864	object *tmp;	1855	{
1865	if(m==NULL || out_of_map(m,x,y)) {	1856	if (!m || out_of_map (m, x, y))
		1857	{
1866	LOG(llevError,"Present_arch called outside map.\n");	1858	LOG (llevError, "Present_arch called outside map.\n");
1867	return NULL;	1859	return NULL;
1868	}	1860	}
1869	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1861
		1862	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1870	if(tmp->arch == at)	1863	if (tmp->arch == at)
1871	return tmp;	1864	return tmp;
		1865
1872	return NULL;	1866	return NULL;
1873	}	1867	}
1874		1868
1875	/*	1869	/*
1876	* present(type, map, x, y) searches for any objects with	1870	* present(type, map, x, y) searches for any objects with
1877	* a matching type variable at the given map and coordinates.	1871	* a matching type variable at the given map and coordinates.
1878	* The first matching object is returned, or NULL if none.	1872	* The first matching object is returned, or NULL if none.
1879	*/	1873	*/
1880		1874	object *
1881	object *present(unsigned char type,mapstruct *m, int x,int y) {	1875	present (unsigned char type, maptile *m, int x, int y)
1882	object *tmp;	1876	{
1883	if(out_of_map(m,x,y)) {	1877	if (out_of_map (m, x, y))
		1878	{
1884	LOG(llevError,"Present called outside map.\n");	1879	LOG (llevError, "Present called outside map.\n");
1885	return NULL;	1880	return NULL;
1886	}	1881	}
1887	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1882
		1883	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1888	if(tmp->type==type)	1884	if (tmp->type == type)
1889	return tmp;	1885	return tmp;
		1886
1890	return NULL;	1887	return NULL;
1891	}	1888	}
1892		1889
1893	/*	1890	/*
1894	* present_in_ob(type, object) searches for any objects with	1891	* present_in_ob(type, object) searches for any objects with
1895	* a matching type variable in the inventory of the given object.	1892	* a matching type variable in the inventory of the given object.
1896	* The first matching object is returned, or NULL if none.	1893	* The first matching object is returned, or NULL if none.
1897	*/	1894	*/
1898		1895	object *
1899	object *present_in_ob(unsigned char type, const object *op) {	1896	present_in_ob (unsigned char type, const object *op)
1900	object *tmp;	1897	{
1901	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1898	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1902	if(tmp->type==type)	1899	if (tmp->type == type)
1903	return tmp;	1900	return tmp;
		1901
1904	return NULL;	1902	return NULL;
1905	}	1903	}
1906		1904
1907	/*	1905	/*
1908	* present_in_ob (type, str, object) searches for any objects with	1906	* present_in_ob (type, str, object) searches for any objects with
…		…
1916	* str is the string to match against. Note that we match against	1914	* str is the string to match against. Note that we match against
1917	* the object name, not the archetype name. this is so that the	1915	* the object name, not the archetype name. this is so that the
1918	* spell code can use one object type (force), but change it's name	1916	* spell code can use one object type (force), but change it's name
1919	* to be unique.	1917	* to be unique.
1920	*/	1918	*/
1921		1919	object *
1922	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1920	present_in_ob_by_name (int type, const char *str, const object *op)
1923	object *tmp;	1921	{
1924
1925	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1922	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1926	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1923	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1927	return tmp;	1924	return tmp;
1928	}	1925
1929	return NULL;	1926	return 0;
1930	}	1927	}
1931		1928
1932	/*	1929	/*
1933	* present_arch_in_ob(archetype, object) searches for any objects with	1930	* present_arch_in_ob(archetype, object) searches for any objects with
1934	* a matching archetype in the inventory of the given object.	1931	* a matching archetype in the inventory of the given object.
1935	* The first matching object is returned, or NULL if none.	1932	* The first matching object is returned, or NULL if none.
1936	*/	1933	*/
1937		1934	object *
1938	object *present_arch_in_ob(const archetype *at, const object *op) {	1935	present_arch_in_ob (const archetype *at, const object *op)
1939	object *tmp;	1936	{
1940	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1937	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1941	if( tmp->arch == at)	1938	if (tmp->arch == at)
1942	return tmp;	1939	return tmp;
		1940
1943	return NULL;	1941	return NULL;
1944	}	1942	}
1945		1943
1946	/*	1944	/*
1947	* activate recursively a flag on an object inventory	1945	* activate recursively a flag on an object inventory
1948	*/	1946	*/
		1947	void
1949	void flag_inv(object*op, int flag){	1948	flag_inv (object *op, int flag)
1950	object *tmp;	1949	{
1951	if(op->inv)	1950	if (op->inv)
1952	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1951	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1952	{
1953	SET_FLAG(tmp, flag);	1953	SET_FLAG (tmp, flag);
1954	flag_inv(tmp,flag);	1954	flag_inv (tmp, flag);
1955	}	1955	}
		1956	}
		1957
1956	}/*	1958	/*
1957	* desactivate recursively a flag on an object inventory	1959	* deactivate recursively a flag on an object inventory
1958	*/	1960	*/
		1961	void
1959	void unflag_inv(object*op, int flag){	1962	unflag_inv (object *op, int flag)
1960	object *tmp;	1963	{
1961	if(op->inv)	1964	if (op->inv)
1962	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1965	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
		1966	{
1963	CLEAR_FLAG(tmp, flag);	1967	CLEAR_FLAG (tmp, flag);
1964	unflag_inv(tmp,flag);	1968	unflag_inv (tmp, flag);
1965	}	1969	}
1966	}
1967
1968	/*
1969	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1970	* all it's inventory (recursively).
1971	* If checksums are used, a player will get set_cheat called for
1972	* him/her-self and all object carried by a call to this function.
1973	*/
1974
1975	void set_cheat(object *op) {
1976	SET_FLAG(op, FLAG_WAS_WIZ);
1977	flag_inv(op, FLAG_WAS_WIZ);
1978	}	1970	}
1979		1971
1980	/*	1972	/*
1981	* find_free_spot(object, map, x, y, start, stop) will search for	1973	* find_free_spot(object, map, x, y, start, stop) will search for
1982	* a spot at the given map and coordinates which will be able to contain	1974	* a spot at the given map and coordinates which will be able to contain
…		…
1996	* because arch_blocked (now ob_blocked) needs to know the movement type	1988	* because arch_blocked (now ob_blocked) needs to know the movement type
1997	* to know if the space in question will block the object. We can't use	1989	* to know if the space in question will block the object. We can't use
1998	* the archetype because that isn't correct if the monster has been	1990	* the archetype because that isn't correct if the monster has been
1999	* customized, changed states, etc.	1991	* customized, changed states, etc.
2000	*/	1992	*/
2001		1993	int
2002	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1994	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1995	{
2003	int i,index=0, flag;	1996	int index = 0, flag;
2004	static int altern[SIZEOFFREE];	1997	int altern[SIZEOFFREE];
2005		1998
2006	for(i=start;i<stop;i++) {	1999	for (int i = start; i < stop; i++)
		2000	{
2007	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	2001	flag = ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]);
2008	if(!flag)	2002	if (!flag)
2009	altern[index++]=i;	2003	altern [index++] = i;
2010		2004
2011	/* Basically, if we find a wall on a space, we cut down the search size.	2005	/* Basically, if we find a wall on a space, we cut down the search size.
2012	* In this way, we won't return spaces that are on another side of a wall.	2006	* In this way, we won't return spaces that are on another side of a wall.
2013	* This mostly work, but it cuts down the search size in all directions -	2007	* This mostly work, but it cuts down the search size in all directions -
2014	* if the space being examined only has a wall to the north and empty	2008	* if the space being examined only has a wall to the north and empty
2015	* spaces in all the other directions, this will reduce the search space	2009	* spaces in all the other directions, this will reduce the search space
2016	* to only the spaces immediately surrounding the target area, and	2010	* to only the spaces immediately surrounding the target area, and
2017	* won't look 2 spaces south of the target space.	2011	* won't look 2 spaces south of the target space.
2018	*/	2012	*/
2019	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	2013	else if ((flag & P_NO_PASS) && maxfree[i] < stop)
2020	stop=maxfree[i];	2014	stop = maxfree[i];
2021	}	2015	}
2022	if(!index) return -1;
2023	return altern[RANDOM()%index];
2024	}
2025		2016
		2017	if (!index)
		2018	return -1;
		2019
		2020	return altern [rndm (index)];
		2021	}
		2022
2026	/*	2023	/*
2027	* find_first_free_spot(archetype, mapstruct, x, y) works like	2024	* find_first_free_spot(archetype, maptile, x, y) works like
2028	* find_free_spot(), but it will search max number of squares.	2025	* find_free_spot(), but it will search max number of squares.
2029	* But it will return the first available spot, not a random choice.	2026	* But it will return the first available spot, not a random choice.
2030	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2027	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2031	*/	2028	*/
2032		2029	int
2033	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2030	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2034	int i;	2031	{
2035	for(i=0;i<SIZEOFFREE;i++) {	2032	for (int i = 0; i < SIZEOFFREE; i++)
2036	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2033	if (!ob_blocked (ob, m, x + freearr_x[i], y + freearr_y[i]))
2037	return i;	2034	return i;
2038	}	2035
2039	return -1;	2036	return -1;
2040	}	2037	}
2041		2038
2042	/*	2039	/*
2043	* The function permute(arr, begin, end) randomly reorders the array	2040	* The function permute(arr, begin, end) randomly reorders the array
2044	* arr[begin..end-1].	2041	* arr[begin..end-1].
		2042	* now uses a fisher-yates shuffle, old permute was broken
2045	*/	2043	*/
		2044	static void
2046	static void permute(int *arr, int begin, int end)	2045	permute (int *arr, int begin, int end)
2047	{	2046	{
2048	int i, j, tmp, len;	2047	arr += begin;
		2048	end -= begin;
2049		2049
2050	len = end-begin;	2050	while (--end)
2051	for(i = begin; i < end; i++)	2051	swap (arr [end], arr [rndm (end + 1)]);
2052	{
2053	j = begin+RANDOM()%len;
2054
2055	tmp = arr[i];
2056	arr[i] = arr[j];
2057	arr[j] = tmp;
2058	}
2059	}	2052	}
2060		2053
2061	/* new function to make monster searching more efficient, and effective!	2054	/* new function to make monster searching more efficient, and effective!
2062	* This basically returns a randomized array (in the passed pointer) of	2055	* This basically returns a randomized array (in the passed pointer) of
2063	* the spaces to find monsters. In this way, it won't always look for	2056	* the spaces to find monsters. In this way, it won't always look for
2064	* monsters to the north first. However, the size of the array passed	2057	* monsters to the north first. However, the size of the array passed
2065	* covers all the spaces, so within that size, all the spaces within	2058	* covers all the spaces, so within that size, all the spaces within
2066	* the 3x3 area will be searched, just not in a predictable order.	2059	* the 3x3 area will be searched, just not in a predictable order.
2067	*/	2060	*/
		2061	void
2068	void get_search_arr(int *search_arr)	2062	get_search_arr (int *search_arr)
2069	{	2063	{
2070	int i;	2064	int i;
2071		2065
2072	for(i = 0; i < SIZEOFFREE; i++)	2066	for (i = 0; i < SIZEOFFREE; i++)
2073	{
2074	search_arr[i] = i;	2067	search_arr[i] = i;
2075	}
2076		2068
2077	permute(search_arr, 1, SIZEOFFREE1+1);	2069	permute (search_arr, 1, SIZEOFFREE1 + 1);
2078	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2070	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2079	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2071	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2080	}	2072	}
2081		2073
2082	/*	2074	/*
2083	* find_dir(map, x, y, exclude) will search some close squares in the	2075	* find_dir(map, x, y, exclude) will search some close squares in the
2084	* given map at the given coordinates for live objects.	2076	* given map at the given coordinates for live objects.
…		…
2089	* Perhaps incorrectly, but I'm making the assumption that exclude	2081	* Perhaps incorrectly, but I'm making the assumption that exclude
2090	* is actually want is going to try and move there. We need this info	2082	* is actually want is going to try and move there. We need this info
2091	* because we have to know what movement the thing looking to move	2083	* because we have to know what movement the thing looking to move
2092	* there is capable of.	2084	* there is capable of.
2093	*/	2085	*/
2094		2086	int
2095	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2087	find_dir (maptile *m, int x, int y, object *exclude)
		2088	{
2096	int i,max=SIZEOFFREE, mflags;	2089	int i, max = SIZEOFFREE, mflags;
		2090
2097	sint16 nx, ny;	2091	sint16 nx, ny;
2098	object *tmp;	2092	object *tmp;
2099	mapstruct *mp;	2093	maptile *mp;
		2094
2100	MoveType blocked, move_type;	2095	MoveType blocked, move_type;
2101		2096
2102	if (exclude && exclude->head) {	2097	if (exclude && exclude->head_ () != exclude)
		2098	{
2103	exclude = exclude->head;	2099	exclude = exclude->head;
2104	move_type = exclude->move_type;	2100	move_type = exclude->move_type;
2105	} else {	2101	}
		2102	else
		2103	{
2106	/* If we don't have anything, presume it can use all movement types. */	2104	/* If we don't have anything, presume it can use all movement types. */
2107	move_type=MOVE_ALL;	2105	move_type = MOVE_ALL;
		2106	}
		2107
		2108	for (i = 1; i < max; i++)
2108	}	2109	{
2109
2110	for(i=1;i<max;i++) {
2111	mp = m;	2110	mp = m;
2112	nx = x + freearr_x[i];	2111	nx = x + freearr_x[i];
2113	ny = y + freearr_y[i];	2112	ny = y + freearr_y[i];
2114		2113
2115	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2114	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2115
2116	if (mflags & P_OUT_OF_MAP) {	2116	if (mflags & P_OUT_OF_MAP)
		2117	max = maxfree[i];
		2118	else
		2119	{
		2120	mapspace &ms = mp->at (nx, ny);
		2121
		2122	blocked = ms.move_block;
		2123
		2124	if ((move_type & blocked) == move_type)
2117	max = maxfree[i];	2125	max = maxfree[i];
2118	} else {
2119	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2120
2121	if ((move_type & blocked) == move_type) {
2122	max=maxfree[i];
2123	} else if (mflags & P_IS_ALIVE) {	2126	else if (mflags & P_IS_ALIVE)
2124	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2127	{
		2128	for (tmp = ms.bot; tmp; tmp = tmp->above)
2125	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2129	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2126	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2130	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2127	break;	2131	break;
2128	}	2132
2129	}
2130	if(tmp) {	2133	if (tmp)
2131	return freedir[i];	2134	return freedir[i];
2132	}
2133	}	2135	}
2134	}	2136	}
2135	}	2137	}
		2138
2136	return 0;	2139	return 0;
2137	}	2140	}
2138		2141
2139	/*	2142	/*
2140	* distance(object 1, object 2) will return the square of the	2143	* distance(object 1, object 2) will return the square of the
2141	* distance between the two given objects.	2144	* distance between the two given objects.
2142	*/	2145	*/
2143		2146	int
2144	int distance(const object *ob1, const object *ob2) {	2147	distance (const object *ob1, const object *ob2)
2145	int i;	2148	{
2146	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2149	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2147	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2148	return i;
2149	}	2150	}
2150		2151
2151	/*	2152	/*
2152	* find_dir_2(delta-x,delta-y) will return a direction in which	2153	* find_dir_2(delta-x,delta-y) will return a direction in which
2153	* an object which has subtracted the x and y coordinates of another	2154	* an object which has subtracted the x and y coordinates of another
2154	* object, needs to travel toward it.	2155	* object, needs to travel toward it.
2155	*/	2156	*/
2156		2157	int
2157	int find_dir_2(int x, int y) {	2158	find_dir_2 (int x, int y)
		2159	{
2158	int q;	2160	int q;
2159		2161
2160	if(y)	2162	if (y)
2161	q=x*100/y;	2163	q = x * 100 / y;
2162	else if (x)	2164	else if (x)
2163	q= -300*x;	2165	q = -300 * x;
2164	else	2166	else
2165	return 0;	2167	return 0;
2166		2168
2167	if(y>0) {	2169	if (y > 0)
		2170	{
2168	if(q < -242)	2171	if (q < -242)
2169	return 3 ;	2172	return 3;
2170	if (q < -41)	2173	if (q < -41)
2171	return 2 ;	2174	return 2;
2172	if (q < 41)	2175	if (q < 41)
2173	return 1 ;	2176	return 1;
2174	if (q < 242)	2177	if (q < 242)
2175	return 8 ;	2178	return 8;
2176	return 7 ;	2179	return 7;
2177	}	2180	}
2178		2181
2179	if (q < -242)	2182	if (q < -242)
2180	return 7 ;	2183	return 7;
2181	if (q < -41)	2184	if (q < -41)
2182	return 6 ;	2185	return 6;
2183	if (q < 41)	2186	if (q < 41)
2184	return 5 ;	2187	return 5;
2185	if (q < 242)	2188	if (q < 242)
2186	return 4 ;	2189	return 4;
2187		2190
2188	return 3 ;	2191	return 3;
2189	}
2190
2191	/*
2192	* absdir(int): Returns a number between 1 and 8, which represent
2193	* the "absolute" direction of a number (it actually takes care of
2194	* "overflow" in previous calculations of a direction).
2195	*/
2196
2197	int absdir(int d) {
2198	while(d<1) d+=8;
2199	while(d>8) d-=8;
2200	return d;
2201	}	2192	}
2202		2193
2203	/*	2194	/*
2204	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2195	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2205	* between two directions (which are expected to be absolute (see absdir())	2196	* between two directions (which are expected to be absolute (see absdir())
2206	*/	2197	*/
2207		2198	int
2208	int dirdiff(int dir1, int dir2) {	2199	dirdiff (int dir1, int dir2)
		2200	{
2209	int d;	2201	int d;
		2202
2210	d = abs(dir1 - dir2);	2203	d = abs (dir1 - dir2);
2211	if(d>4)	2204	if (d > 4)
2212	d = 8 - d;	2205	d = 8 - d;
		2206
2213	return d;	2207	return d;
2214	}	2208	}
2215		2209
2216	/* peterm:	2210	/* peterm:
2217	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2211	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2220	* This basically means that if direction is 15, then it could either go	2214	* This basically means that if direction is 15, then it could either go
2221	* direction 4, 14, or 16 to get back to where we are.	2215	* direction 4, 14, or 16 to get back to where we are.
2222	* Moved from spell_util.c to object.c with the other related direction	2216	* Moved from spell_util.c to object.c with the other related direction
2223	* functions.	2217	* functions.
2224	*/	2218	*/
2225
2226	int reduction_dir[SIZEOFFREE][3] = {	2219	int reduction_dir[SIZEOFFREE][3] = {
2227	{0,0,0}, /* 0 */	2220	{0, 0, 0}, /* 0 */
2228	{0,0,0}, /* 1 */	2221	{0, 0, 0}, /* 1 */
2229	{0,0,0}, /* 2 */	2222	{0, 0, 0}, /* 2 */
2230	{0,0,0}, /* 3 */	2223	{0, 0, 0}, /* 3 */
2231	{0,0,0}, /* 4 */	2224	{0, 0, 0}, /* 4 */
2232	{0,0,0}, /* 5 */	2225	{0, 0, 0}, /* 5 */
2233	{0,0,0}, /* 6 */	2226	{0, 0, 0}, /* 6 */
2234	{0,0,0}, /* 7 */	2227	{0, 0, 0}, /* 7 */
2235	{0,0,0}, /* 8 */	2228	{0, 0, 0}, /* 8 */
2236	{8,1,2}, /* 9 */	2229	{8, 1, 2}, /* 9 */
2237	{1,2,-1}, /* 10 */	2230	{1, 2, -1}, /* 10 */
2238	{2,10,12}, /* 11 */	2231	{2, 10, 12}, /* 11 */
2239	{2,3,-1}, /* 12 */	2232	{2, 3, -1}, /* 12 */
2240	{2,3,4}, /* 13 */	2233	{2, 3, 4}, /* 13 */
2241	{3,4,-1}, /* 14 */	2234	{3, 4, -1}, /* 14 */
2242	{4,14,16}, /* 15 */	2235	{4, 14, 16}, /* 15 */
2243	{5,4,-1}, /* 16 */	2236	{5, 4, -1}, /* 16 */
2244	{4,5,6}, /* 17 */	2237	{4, 5, 6}, /* 17 */
2245	{6,5,-1}, /* 18 */	2238	{6, 5, -1}, /* 18 */
2246	{6,20,18}, /* 19 */	2239	{6, 20, 18}, /* 19 */
2247	{7,6,-1}, /* 20 */	2240	{7, 6, -1}, /* 20 */
2248	{6,7,8}, /* 21 */	2241	{6, 7, 8}, /* 21 */
2249	{7,8,-1}, /* 22 */	2242	{7, 8, -1}, /* 22 */
2250	{8,22,24}, /* 23 */	2243	{8, 22, 24}, /* 23 */
2251	{8,1,-1}, /* 24 */	2244	{8, 1, -1}, /* 24 */
2252	{24,9,10}, /* 25 */	2245	{24, 9, 10}, /* 25 */
2253	{9,10,-1}, /* 26 */	2246	{9, 10, -1}, /* 26 */
2254	{10,11,-1}, /* 27 */	2247	{10, 11, -1}, /* 27 */
2255	{27,11,29}, /* 28 */	2248	{27, 11, 29}, /* 28 */
2256	{11,12,-1}, /* 29 */	2249	{11, 12, -1}, /* 29 */
2257	{12,13,-1}, /* 30 */	2250	{12, 13, -1}, /* 30 */
2258	{12,13,14}, /* 31 */	2251	{12, 13, 14}, /* 31 */
2259	{13,14,-1}, /* 32 */	2252	{13, 14, -1}, /* 32 */
2260	{14,15,-1}, /* 33 */	2253	{14, 15, -1}, /* 33 */
2261	{33,15,35}, /* 34 */	2254	{33, 15, 35}, /* 34 */
2262	{16,15,-1}, /* 35 */	2255	{16, 15, -1}, /* 35 */
2263	{17,16,-1}, /* 36 */	2256	{17, 16, -1}, /* 36 */
2264	{18,17,16}, /* 37 */	2257	{18, 17, 16}, /* 37 */
2265	{18,17,-1}, /* 38 */	2258	{18, 17, -1}, /* 38 */
2266	{18,19,-1}, /* 39 */	2259	{18, 19, -1}, /* 39 */
2267	{41,19,39}, /* 40 */	2260	{41, 19, 39}, /* 40 */
2268	{19,20,-1}, /* 41 */	2261	{19, 20, -1}, /* 41 */
2269	{20,21,-1}, /* 42 */	2262	{20, 21, -1}, /* 42 */
2270	{20,21,22}, /* 43 */	2263	{20, 21, 22}, /* 43 */
2271	{21,22,-1}, /* 44 */	2264	{21, 22, -1}, /* 44 */
2272	{23,22,-1}, /* 45 */	2265	{23, 22, -1}, /* 45 */
2273	{45,47,23}, /* 46 */	2266	{45, 47, 23}, /* 46 */
2274	{23,24,-1}, /* 47 */	2267	{23, 24, -1}, /* 47 */
2275	{24,9,-1}}; /* 48 */	2268	{24, 9, -1}
		2269	}; /* 48 */
2276		2270
2277	/* Recursive routine to step back and see if we can	2271	/* Recursive routine to step back and see if we can
2278	* find a path to that monster that we found. If not,	2272	* find a path to that monster that we found. If not,
2279	* we don't bother going toward it. Returns 1 if we	2273	* we don't bother going toward it. Returns 1 if we
2280	* can see a direct way to get it	2274	* can see a direct way to get it
2281	* Modified to be map tile aware -.MSW	2275	* Modified to be map tile aware -.MSW
2282	*/	2276	*/
2283		2277	int
2284
2285	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2278	can_see_monsterP (maptile *m, int x, int y, int dir)
		2279	{
2286	sint16 dx, dy;	2280	sint16 dx, dy;
2287	int mflags;	2281	int mflags;
2288		2282
		2283	if (dir < 0)
2289	if(dir<0) return 0; /* exit condition: invalid direction */	2284	return 0; /* exit condition: invalid direction */
2290		2285
2291	dx = x + freearr_x[dir];	2286	dx = x + freearr_x[dir];
2292	dy = y + freearr_y[dir];	2287	dy = y + freearr_y[dir];
2293		2288
2294	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2289	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2295		2290
2296	/* This functional arguably was incorrect before - it was	2291	/* This functional arguably was incorrect before - it was
2297	* checking for P_WALL - that was basically seeing if	2292	* checking for P_WALL - that was basically seeing if
2298	* we could move to the monster - this is being more	2293	* we could move to the monster - this is being more
2299	* literal on if we can see it. To know if we can actually	2294	* literal on if we can see it. To know if we can actually
2300	* move to the monster, we'd need the monster passed in or	2295	* move to the monster, we'd need the monster passed in or
2301	* at least its move type.	2296	* at least its move type.
2302	*/	2297	*/
2303	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2298	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2299	return 0;
2304		2300
2305	/* yes, can see. */	2301	/* yes, can see. */
2306	if(dir < 9) return 1;	2302	if (dir < 9)
		2303	return 1;
		2304
2307	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2305	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2308	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2306	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2309	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2307	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2310	}	2308	}
2311		2309
2312
2313
2314	/*	2310	/*
2315	* can_pick(picker, item): finds out if an object is possible to be	2311	* can_pick(picker, item): finds out if an object is possible to be
2316	* picked up by the picker. Returnes 1 if it can be	2312	* picked up by the picker. Returnes 1 if it can be
2317	* picked up, otherwise 0.	2313	* picked up, otherwise 0.
2318	*	2314	*
2319	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2315	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2320	* core dumps if they do.	2316	* core dumps if they do.
2321	*	2317	*
2322	* Add a check so we can't pick up invisible objects (0.93.8)	2318	* Add a check so we can't pick up invisible objects (0.93.8)
2323	*/	2319	*/
2324		2320	int
2325	int can_pick(const object *who, const object *item) {	2321	can_pick (const object *who, const object *item)
		2322	{
2326	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2323	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2327	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2324	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2328	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2325	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2329	(who->type==PLAYER||item->weight<who->weight/3));
2330	}	2326	}
2331
2332		2327
2333	/*	2328	/*
2334	* create clone from object to another	2329	* create clone from object to another
2335	*/	2330	*/
		2331	object *
2336	object *object_create_clone (object *asrc) {	2332	object_create_clone (object *asrc)
		2333	{
2337	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2334	object *dst = 0, *tmp, *src, *prev, *item;
2338		2335
2339	if(!asrc) return NULL;	2336	if (!asrc)
2340	src = asrc;	2337	return 0;
2341	if(src->head)	2338
2342	src = src->head;	2339	src = asrc->head_ ();
2343		2340
2344	prev = NULL;	2341	prev = 0;
2345	for(part = src; part; part = part->more) {	2342	for (object *part = src; part; part = part->more)
2346	tmp = get_object();	2343	{
2347	copy_object(part,tmp);	2344	tmp = part->clone ();
2348	tmp->x -= src->x;	2345	tmp->x -= src->x;
2349	tmp->y -= src->y;	2346	tmp->y -= src->y;
		2347
2350	if(!part->head) {	2348	if (!part->head)
		2349	{
2351	dst = tmp;	2350	dst = tmp;
2352	tmp->head = NULL;
2353	} else {
2354	tmp->head = dst;	2351	tmp->head = 0;
2355	}	2352	}
		2353	else
		2354	tmp->head = dst;
		2355
2356	tmp->more = NULL;	2356	tmp->more = 0;
		2357
2357	if(prev)	2358	if (prev)
2358	prev->more = tmp;	2359	prev->more = tmp;
		2360
2359	prev = tmp;	2361	prev = tmp;
2360	}	2362	}
2361	/*** copy inventory ***/	2363
2362	for(item = src->inv; item; item = item->below) {	2364	for (item = src->inv; item; item = item->below)
2363	(void) insert_ob_in_ob(object_create_clone(item),dst);	2365	insert_ob_in_ob (object_create_clone (item), dst);
2364	}
2365		2366
2366	return dst;	2367	return dst;
2367	}
2368
2369	/* return true if the object was destroyed, 0 otherwise */
2370	int was_destroyed (const object *op, tag_t old_tag)
2371	{
2372	/* checking for FLAG_FREED isn't necessary, but makes this function more
2373	* robust */
2374	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2375	}
2376
2377	/* GROS - Creates an object using a string representing its content. */
2378	/* Basically, we save the content of the string to a temp file, then call */
2379	/* load_object on it. I admit it is a highly inefficient way to make things, */
2380	/* but it was simple to make and allows reusing the load_object function. */
2381	/* Remember not to use load_object_str in a time-critical situation. */
2382	/* Also remember that multiparts objects are not supported for now. */
2383
2384	object* load_object_str(const char *obstr)
2385	{
2386	object *op;
2387	char filename[MAX_BUF];
2388	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2389
2390	FILE *tempfile=fopen(filename,"w");
2391	if (tempfile == NULL)
2392	{
2393	LOG(llevError,"Error - Unable to access load object temp file\n");
2394	return NULL;
2395	};
2396	fprintf(tempfile,obstr);
2397	fclose(tempfile);
2398
2399	op=get_object();
2400
2401	object_thawer thawer (filename);
2402
2403	if (thawer)
2404	load_object(thawer,op,0);
2405
2406	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2407	CLEAR_FLAG(op,FLAG_REMOVED);
2408
2409	return op;
2410	}	2368	}
2411		2369
2412	/* This returns the first object in who's inventory that	2370	/* This returns the first object in who's inventory that
2413	* has the same type and subtype match.	2371	* has the same type and subtype match.
2414	* returns NULL if no match.	2372	* returns NULL if no match.
2415	*/	2373	*/
		2374	object *
2416	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2375	find_obj_by_type_subtype (const object *who, int type, int subtype)
2417	{	2376	{
2418	object *tmp;
2419
2420	for (tmp=who->inv; tmp; tmp=tmp->below)	2377	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2421	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2378	if (tmp->type == type && tmp->subtype == subtype)
		2379	return tmp;
2422		2380
2423	return NULL;	2381	return 0;
2424	}	2382	}
2425		2383
2426	/* If ob has a field named key, return the link from the list,	2384	/* If ob has a field named key, return the link from the list,
2427	* otherwise return NULL.	2385	* otherwise return NULL.
2428	*	2386	*
2429	* key must be a passed in shared string - otherwise, this won't	2387	* key must be a passed in shared string - otherwise, this won't
2430	* do the desired thing.	2388	* do the desired thing.
2431	*/	2389	*/
		2390	key_value *
2432	key_value * get_ob_key_link(const object * ob, const char * key) {	2391	get_ob_key_link (const object *ob, const char *key)
2433	key_value * link;	2392	{
2434
2435	for (link = ob->key_values; link != NULL; link = link->next) {	2393	for (key_value *link = ob->key_values; link; link = link->next)
2436	if (link->key == key) {	2394	if (link->key == key)
2437	return link;	2395	return link;
2438	}	2396
2439	}	2397	return 0;
2440		2398	}
2441	return NULL;
2442	}
2443		2399
2444	/*	2400	/*
2445	* Returns the value of op has an extra_field for key, or NULL.	2401	* Returns the value of op has an extra_field for key, or NULL.
2446	*	2402	*
2447	* The argument doesn't need to be a shared string.	2403	* The argument doesn't need to be a shared string.
2448	*	2404	*
2449	* The returned string is shared.	2405	* The returned string is shared.
2450	*/	2406	*/
		2407	const char *
2451	const char * get_ob_key_value(const object * op, const char * const key) {	2408	get_ob_key_value (const object *op, const char *const key)
		2409	{
2452	key_value * link;	2410	key_value *link;
2453	const char * canonical_key;	2411	shstr_cmp canonical_key (key);
		2412
		2413	if (!canonical_key)
2454		2414	{
2455	canonical_key = shstr::find (key);
2456
2457	if (canonical_key == NULL) {
2458	/* 1. There being a field named key on any object	2415	/* 1. There being a field named key on any object
2459	* implies there'd be a shared string to find.	2416	* implies there'd be a shared string to find.
2460	* 2. Since there isn't, no object has this field.	2417	* 2. Since there isn't, no object has this field.
2461	* 3. Therefore, *this* object doesn't have this field.	2418	* 3. Therefore, *this* object doesn't have this field.
2462	*/	2419	*/
2463	return NULL;	2420	return 0;
2464	}	2421	}
2465		2422
2466	/* This is copied from get_ob_key_link() above -	2423	/* This is copied from get_ob_key_link() above -
2467	* only 4 lines, and saves the function call overhead.	2424	* only 4 lines, and saves the function call overhead.
2468	*/	2425	*/
2469	for (link = op->key_values; link != NULL; link = link->next) {	2426	for (link = op->key_values; link; link = link->next)
2470	if (link->key == canonical_key) {	2427	if (link->key == canonical_key)
2471	return link->value;	2428	return link->value;
2472	}
2473	}
2474	return NULL;
2475	}
2476		2429
		2430	return 0;
		2431	}
2477		2432
2478	/*	2433	/*
2479	* Updates the canonical_key in op to value.	2434	* Updates the canonical_key in op to value.
2480	*	2435	*
2481	* canonical_key is a shared string (value doesn't have to be).	2436	* canonical_key is a shared string (value doesn't have to be).
…		…
2483	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2438	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2484	* keys.	2439	* keys.
2485	*	2440	*
2486	* Returns TRUE on success.	2441	* Returns TRUE on success.
2487	*/	2442	*/
		2443	int
2488	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2444	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2445	{
2489	key_value * field = NULL, *last=NULL;	2446	key_value *field = NULL, *last = NULL;
2490		2447
2491	for (field=op->key_values; field != NULL; field=field->next) {	2448	for (field = op->key_values; field != NULL; field = field->next)
		2449	{
2492	if (field->key != canonical_key) {	2450	if (field->key != canonical_key)
		2451	{
2493	last = field;	2452	last = field;
2494	continue;	2453	continue;
2495	}	2454	}
2496		2455
2497	if (value)	2456	if (value)
2498	field->value = value;	2457	field->value = value;
2499	else {	2458	else
		2459	{
2500	/* Basically, if the archetype has this key set,	2460	/* Basically, if the archetype has this key set,
2501	* we need to store the null value so when we save	2461	* we need to store the null value so when we save
2502	* it, we save the empty value so that when we load,	2462	* it, we save the empty value so that when we load,
2503	* we get this value back again.	2463	* we get this value back again.
2504	*/	2464	*/
2505	if (get_ob_key_link (&op->arch->clone, canonical_key))	2465	if (get_ob_key_link (op->arch, canonical_key))
2506	field->value = 0;	2466	field->value = 0;
		2467	else
		2468	{
		2469	if (last)
		2470	last->next = field->next;
2507	else	2471	else
2508	{
2509	if (last) last->next = field->next;
2510	else op->key_values = field->next;	2472	op->key_values = field->next;
2511		2473
2512	delete field;	2474	delete field;
2513	}	2475	}
2514	}	2476	}
2515	return TRUE;	2477	return TRUE;
2516	}	2478	}
2517	/* IF we get here, key doesn't exist */	2479	/* IF we get here, key doesn't exist */
2518		2480
2519	/* No field, we'll have to add it. */	2481	/* No field, we'll have to add it. */
2520		2482
2521	if (!add_key) {	2483	if (!add_key)
2522	return FALSE;	2484	return FALSE;
2523	}	2485
2524	/* There isn't any good reason to store a null	2486	/* There isn't any good reason to store a null
2525	* value in the key/value list. If the archetype has	2487	* value in the key/value list. If the archetype has
2526	* this key, then we should also have it, so shouldn't	2488	* this key, then we should also have it, so shouldn't
2527	* be here. If user wants to store empty strings,	2489	* be here. If user wants to store empty strings,
2528	* should pass in ""	2490	* should pass in ""
2529	*/	2491	*/
2530	if (value == NULL) return TRUE;	2492	if (value == NULL)
2531
2532	field = new key_value;
2533
2534	field->key = canonical_key;
2535	field->value = value;
2536	/* Usual prepend-addition. */
2537	field->next = op->key_values;
2538	op->key_values = field;
2539
2540	return TRUE;	2493	return TRUE;
		2494
		2495	field = new key_value;
		2496
		2497	field->key = canonical_key;
		2498	field->value = value;
		2499	/* Usual prepend-addition. */
		2500	field->next = op->key_values;
		2501	op->key_values = field;
		2502
		2503	return TRUE;
2541	}	2504	}
2542		2505
2543	/*	2506	/*
2544	* Updates the key in op to value.	2507	* Updates the key in op to value.
2545	*	2508	*
…		…
2547	* and not add new ones.	2510	* and not add new ones.
2548	* In general, should be little reason FALSE is ever passed in for add_key	2511	* In general, should be little reason FALSE is ever passed in for add_key
2549	*	2512	*
2550	* Returns TRUE on success.	2513	* Returns TRUE on success.
2551	*/	2514	*/
		2515	int
2552	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2516	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2553	{	2517	{
2554	shstr key_ (key);	2518	shstr key_ (key);
		2519
2555	return set_ob_key_value_s (op, key_, value, add_key);	2520	return set_ob_key_value_s (op, key_, value, add_key);
2556	}	2521	}
		2522
		2523	object::depth_iterator::depth_iterator (object *container)
		2524	: iterator_base (container)
		2525	{
		2526	while (item->inv)
		2527	item = item->inv;
		2528	}
		2529
		2530	void
		2531	object::depth_iterator::next ()
		2532	{
		2533	if (item->below)
		2534	{
		2535	item = item->below;
		2536
		2537	while (item->inv)
		2538	item = item->inv;
		2539	}
		2540	else
		2541	item = item->env;
		2542	}
		2543
		2544	const char *
		2545	object::flag_desc (char *desc, int len) const
		2546	{
		2547	char *p = desc;
		2548	bool first = true;
		2549
		2550	*p = 0;
		2551
		2552	for (int i = 0; i < NUM_FLAGS; i++)
		2553	{
		2554	if (len <= 10) // magic constant!
		2555	{
		2556	snprintf (p, len, ",...");
		2557	break;
		2558	}
		2559
		2560	if (flag [i])
		2561	{
		2562	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2563	len -= cnt;
		2564	p += cnt;
		2565	first = false;
		2566	}
		2567	}
		2568
		2569	return desc;
		2570	}
		2571
		2572	// return a suitable string describing an object in enough detail to find it
		2573	const char *
		2574	object::debug_desc (char *info) const
		2575	{
		2576	char flagdesc[512];
		2577	char info2[256 * 4];
		2578	char *p = info;
		2579
		2580	p += snprintf (p, 512, "{cnt:%d,uuid:<1.%" PRIx64 ">,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2581	count, uuid.seq,
		2582	&name,
		2583	title ? "\",title:\"" : "",
		2584	title ? (const char *)title : "",
		2585	flag_desc (flagdesc, 512), type);
		2586
		2587	if (!this->flag[FLAG_REMOVED] && env)
		2588	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2589
		2590	if (map)
		2591	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2592
		2593	return info;
		2594	}
		2595
		2596	const char *
		2597	object::debug_desc () const
		2598	{
		2599	static char info[3][256 * 4];
		2600	static int info_idx;
		2601
		2602	return debug_desc (info [++info_idx % 3]);
		2603	}
		2604
		2605	struct region *
		2606	object::region () const
		2607	{
		2608	return map ? map->region (x, y)
		2609	: region::default_region ();
		2610	}
		2611
		2612	const materialtype_t *
		2613	object::dominant_material () const
		2614	{
		2615	if (materialtype_t *mt = name_to_material (materialname))
		2616	return mt;
		2617
		2618	return name_to_material (shstr_unknown);
		2619	}
		2620
		2621	void
		2622	object::open_container (object *new_container)
		2623	{
		2624	if (container == new_container)
		2625	return;
		2626
		2627	if (object *old_container = container)
		2628	{
		2629	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2630	return;
		2631
		2632	#if 0
		2633	// remove the "Close old_container" object.
		2634	if (object *closer = old_container->inv)
		2635	if (closer->type == CLOSE_CON)
		2636	closer->destroy ();
		2637	#endif
		2638
		2639	old_container->flag [FLAG_APPLIED] = 0;
		2640	container = 0;
		2641
		2642	esrv_update_item (UPD_FLAGS, this, old_container);
		2643	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
		2644	play_sound (sound_find ("chest_close"));
		2645	}
		2646
		2647	if (new_container)
		2648	{
		2649	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2650	return;
		2651
		2652	// TODO: this does not seem to serve any purpose anymore?
		2653	#if 0
		2654	// insert the "Close Container" object.
		2655	if (archetype *closer = new_container->other_arch)
		2656	{
		2657	object *closer = arch_to_object (new_container->other_arch);
		2658	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2659	new_container->insert (closer);
		2660	}
		2661	#endif
		2662
		2663	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2664
		2665	new_container->flag [FLAG_APPLIED] = 1;
		2666	container = new_container;
		2667
		2668	esrv_update_item (UPD_FLAGS, this, new_container);
		2669	esrv_send_inventory (this, new_container);
		2670	play_sound (sound_find ("chest_open"));
		2671	}
		2672	}
		2673
		2674	object *
		2675	object::force_find (const shstr name)
		2676	{
		2677	/* cycle through his inventory to look for the MARK we want to
		2678	* place
		2679	*/
		2680	for (object *tmp = inv; tmp; tmp = tmp->below)
		2681	if (tmp->type == FORCE && tmp->slaying == name)
		2682	return splay (tmp);
		2683
		2684	return 0;
		2685	}
		2686
		2687	void
		2688	object::force_add (const shstr name, int duration)
		2689	{
		2690	if (object *force = force_find (name))
		2691	force->destroy ();
		2692
		2693	object *force = get_archetype (FORCE_NAME);
		2694
		2695	force->slaying = name;
		2696	force->stats.food = 1;
		2697	force->speed_left = -1.f;
		2698
		2699	force->set_speed (duration ? 1.f / duration : 0.f);
		2700	force->flag [FLAG_IS_USED_UP] = true;
		2701	force->flag [FLAG_APPLIED] = true;
		2702
		2703	insert (force);
		2704	}
		2705
		2706	void
		2707	object::play_sound (faceidx sound) const
		2708	{
		2709	if (!sound)
		2710	return;
		2711
		2712	if (flag [FLAG_REMOVED])
		2713	return;
		2714
		2715	if (env)
		2716	{
		2717	if (object *pl = in_player ())
		2718	pl->contr->play_sound (sound);
		2719	}
		2720	else
		2721	map->play_sound (sound, x, y);
		2722	}
		2723

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