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Comparing deliantra/server/common/object.C (file contents):
Revision 1.22 by root, Sun Sep 10 00:51:23 2006 UTC vs.
Revision 1.214 by root, Tue Apr 22 07:01:46 2008 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: object.C,v 1.22 2006/09/10 00:51:23 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra 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	* Deliantra 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 <support@deliantra.net>
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.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	24	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	25	#include <stdio.h>
35	#include <sys/types.h>	26	#include <sys/types.h>
36	#include <sys/uio.h>	27	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	28	#include <object.h>
39	#include <funcpoint.h>	29	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>	30	#include <loader.h>
42	int nrofallocobjects = 0;
43		31
44	object *objects; /* Pointer to the list of used objects */	32	#include <bitset>
45	object *active_objects; /* List of active objects that need to be processed */
46		33
		34	UUID UUID::cur;
		35	static uint64_t seq_next_save;
		36	static const uint64 UUID_GAP = 1<<19;
		37
		38	objectvec objects;
		39	activevec actives;
		40
47	short freearr_x[SIZEOFFREE]=	41	short freearr_x[SIZEOFFREE] = {
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,	42	0,
		43	0, 1, 1, 1, 0, -1, -1, -1,
		44	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};	45	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	};
50	short freearr_y[SIZEOFFREE]=	47	short freearr_y[SIZEOFFREE] = {
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	0,
		49	-1, -1, 0, 1, 1, 1, 0, -1,
		50	-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};	51	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
		52	};
53	int maxfree[SIZEOFFREE]=	53	int maxfree[SIZEOFFREE] = {
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,	54	0,
		55	9, 10, 13, 14, 17, 18, 21, 22,
		56	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
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};	57	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		58	};
56	int freedir[SIZEOFFREE]= {	59	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,	60	0,
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};	61	1, 2, 3, 4, 5, 6, 7, 8,
		62	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		63	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		64	};
		65
		66	static void
		67	write_uuid (uval64 skip, bool sync)
		68	{
		69	CALL_BEGIN (2);
		70	CALL_ARG_SV (newSVval64 (skip));
		71	CALL_ARG_SV (boolSV (sync));
		72	CALL_CALL ("cf::write_uuid", G_DISCARD);
		73	CALL_END;
		74	}
		75
		76	static void
		77	read_uuid (void)
		78	{
		79	char filename[MAX_BUF];
		80
		81	sprintf (filename, "%s/uuid", settings.localdir);
		82
		83	seq_next_save = 0;
		84
		85	FILE *fp;
		86
		87	if (!(fp = fopen (filename, "r")))
		88	{
		89	if (errno == ENOENT)
		90	{
		91	LOG (llevInfo, "RESET uid to 1\n");
		92	UUID::cur.seq = 0;
		93	write_uuid (UUID_GAP, true);
		94	return;
		95	}
		96
		97	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		98	_exit (1);
		99	}
		100
		101	UUID::BUF buf;
		102	buf[0] = 0;
		103	fgets (buf, sizeof (buf), fp);
		104
		105	if (!UUID::cur.parse (buf))
		106	{
		107	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		108	_exit (1);
		109	}
		110
		111	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		112
		113	write_uuid (UUID_GAP, true);
		114	fclose (fp);
		115	}
		116
		117	UUID
		118	UUID::gen ()
		119	{
		120	UUID uid;
		121
		122	uid.seq = ++cur.seq;
		123
		124	if (expect_false (cur.seq >= seq_next_save))
		125	{
		126	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		127	write_uuid (UUID_GAP, false);
		128	}
		129
		130
		131	return uid;
		132	}
		133
		134	void
		135	UUID::init ()
		136	{
		137	read_uuid ();
		138	}
59		139
60	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	140	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		141	static bool
61	static int compare_ob_value_lists_one(const object * wants, const object * has) {	142	compare_ob_value_lists_one (const object *wants, const object *has)
		143	{
62	key_value * wants_field;	144	key_value *wants_field;
63		145
64	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	146	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
65	* objects with lists are rare, and lists stay short. If not, use a	147	* objects with lists are rare, and lists stay short. If not, use a
66	* different structure or at least keep the lists sorted...	148	* different structure or at least keep the lists sorted...
67	*/	149	*/
68		150
69	/* For each field in wants, */	151	/* For each field in wants, */
70	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	152	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		153	{
71	key_value * has_field;	154	key_value *has_field;
72		155
73	/* Look for a field in has with the same key. */	156	/* Look for a field in has with the same key. */
74	has_field = get_ob_key_link(has, wants_field->key);	157	has_field = get_ob_key_link (has, wants_field->key);
75		158
76	if (has_field == NULL) {	159	if (!has_field)
77	/* No field with that name. */	160	return 0; /* No field with that name. */
78	return FALSE;	161
79	}
80
81	/* Found the matching field. */	162	/* Found the matching field. */
82	if (has_field->value != wants_field->value) {	163	if (has_field->value != wants_field->value)
83	/* Values don't match, so this half of the comparison is false. */	164	return 0; /* Values don't match, so this half of the comparison is false. */
84	return FALSE;	165
85	}
86
87	/* If we get here, we found a match. Now for the next field in wants. */	166	/* If we get here, we found a match. Now for the next field in wants. */
88	}
89		167	}
		168
90	/* If we get here, every field in wants has a matching field in has. */	169	/* If we get here, every field in wants has a matching field in has. */
91	return TRUE;	170	return 1;
92	}	171	}
93		172
94	/* Returns TRUE if ob1 has the same key_values as ob2. */	173	/* Returns TRUE if ob1 has the same key_values as ob2. */
		174	static bool
95	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	175	compare_ob_value_lists (const object *ob1, const object *ob2)
		176	{
96	/* However, there may be fields in has which aren't partnered in wants,	177	/* However, there may be fields in has which aren't partnered in wants,
97	* so we need to run the comparison *twice*. :(	178	* so we need to run the comparison *twice*. :(
98	*/	179	*/
99	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	180	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
100	}	181	}
101		182
102	/* Function examines the 2 objects given to it, and returns true if	183	/* Function examines the 2 objects given to it, and returns true if
103	* they can be merged together.	184	* they can be merged together.
104	*	185	*
105	* Note that this function appears a lot longer than the macro it	186	* Note that this function appears a lot longer than the macro it
106	* replaces - this is mostly for clarity - a decent compiler should hopefully	187	* replaces - this is mostly for clarity - a decent compiler should hopefully
107	* reduce this to the same efficiency.	188	* reduce this to the same efficiency.
108	*	189	*
109	* Check nrof variable *before* calling CAN_MERGE()	190	* Check nrof variable *before* calling can_merge()
110	*	191	*
111	* Improvements made with merge: Better checking on potion, and also	192	* Improvements made with merge: Better checking on potion, and also
112	* check weight	193	* check weight
113	*/	194	*/
114
115	bool
116	object::can_merge (object *ob1, object *ob2)	195	bool object::can_merge_slow (object *ob1, object *ob2)
117	{	196	{
118	/* A couple quicksanity checks */	197	/* A couple quicksanity checks */
119	if ((ob1 == ob2) || (ob1->type != ob2->type))	198	if (ob1 == ob2
		199	|| ob1->type != ob2->type
		200	|| ob1->speed != ob2->speed
		201	|| ob1->value != ob2->value
		202	|| ob1->name != ob2->name)
120	return 0;	203	return 0;
121		204
122	if (ob1->speed != ob2->speed)	205	/* Do not merge objects if nrof would overflow. First part checks
		206	* for unsigned overflow (2c), second part checks whether the result
		207	* would fit into a 32 bit signed int, which is often used to hold
		208	* nrof values.
		209	*/
		210	if (~ob1->nrof < ob2->nrof || ob1->nrof + ob2->nrof > (1UL << 31))
123	return 0;	211	return 0;
124		212
125	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
126	* value could not be stored in a sint32 (which unfortunately sometimes is
127	* used to store nrof).
128	*/
129	if (ob1->nrof + ob2->nrof >= 1UL << 31)
130	return 0;
131
132	/* If the objects have been identified, set the BEEN_APPLIED flag.	213	/* If the objects have been identified, set the BEEN_APPLIED flag.
133	* This is to the comparison of the flags below will be OK. We	214	* This is to the comparison of the flags below will be OK. We
134	* just can't ignore the been applied or identified flags, as they	215	* just can't ignore the been applied or identified flags, as they
135	* are not equal - just if it has been identified, the been_applied	216	* are not equal - just if it has been identified, the been_applied
136	* flags lose any meaning.	217	* flags lose any meaning.
137	*/	218	*/
138	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	219	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
139	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	220	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
140		221
141	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	222	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
142	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	223	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
143		224
144		225	if (ob1->arch->name != ob2->arch->name
145	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
146	* being locked in inventory should prevent merging.
147	* 0x4 in flags3 is CLIENT_SENT
148	*/
149	if ((ob1->arch != ob2->arch) ||
150	(ob1->flags[0] != ob2->flags[0]) ||
151	(ob1->flags[1] != ob2->flags[1]) ||
152	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
153	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
154	(ob1->name != ob2->name) ||	226	|| ob1->name != ob2->name
155	(ob1->title != ob2->title) ||	227	|| ob1->title != ob2->title
156	(ob1->msg != ob2->msg) ||	228	|| ob1->msg != ob2->msg
157	(ob1->weight != ob2->weight) ||	229	|| ob1->weight != ob2->weight
158	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||
159	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||
160	(ob1->attacktype != ob2->attacktype) ||	230	|| ob1->attacktype != ob2->attacktype
161	(ob1->magic != ob2->magic) ||	231	|| ob1->magic != ob2->magic
162	(ob1->slaying != ob2->slaying) ||	232	|| ob1->slaying != ob2->slaying
163	(ob1->skill != ob2->skill) ||	233	|| ob1->skill != ob2->skill
164	(ob1->value != ob2->value) ||	234	|| ob1->value != ob2->value
165	(ob1->animation_id != ob2->animation_id) ||	235	|| ob1->animation_id != ob2->animation_id
166	(ob1->client_type != ob2->client_type) ||	236	|| ob1->client_type != ob2->client_type
167	(ob1->materialname != ob2->materialname) ||	237	|| ob1->materialname != ob2->materialname
168	(ob1->lore != ob2->lore) ||	238	|| ob1->lore != ob2->lore
169	(ob1->subtype != ob2->subtype) ||	239	|| ob1->subtype != ob2->subtype
170	(ob1->move_type != ob2->move_type) ||	240	|| ob1->move_type != ob2->move_type
171	(ob1->move_block != ob2->move_block) ||	241	|| ob1->move_block != ob2->move_block
172	(ob1->move_allow != ob2->move_allow) ||	242	|| ob1->move_allow != ob2->move_allow
173	(ob1->move_on != ob2->move_on) ||	243	|| ob1->move_on != ob2->move_on
174	(ob1->move_off != ob2->move_off) ||	244	|| ob1->move_off != ob2->move_off
175	(ob1->move_slow != ob2->move_slow) ||	245	|| ob1->move_slow != ob2->move_slow
176	(ob1->move_slow_penalty != ob2->move_slow_penalty))	246	|| ob1->move_slow_penalty != ob2->move_slow_penalty
		247	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		248	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
177	return 0;	249	return 0;
178		250
		251	if ((ob1->flag ^ ob2->flag)
		252	.reset (FLAG_INV_LOCKED)
		253	.reset (FLAG_CLIENT_SENT)
		254	.reset (FLAG_REMOVED)
		255	.any ())
		256	return 0;
		257
179	/* This is really a spellbook check - really, we should	258	/* This is really a spellbook check - we should in general
180	* check all objects in the inventory.	259	* not merge objects with real inventories, as splitting them
		260	* is hard.
181	*/	261	*/
182	if (ob1->inv || ob2->inv)	262	if (ob1->inv || ob2->inv)
183	{	263	{
184	/* if one object has inventory but the other doesn't, not equiv */
185	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
186	return 0;
187
188	/* Now check to see if the two inventory objects could merge */
189	if (!CAN_MERGE (ob1->inv, ob2->inv))	264	if (!(ob1->inv && ob2->inv))
190	return 0;	265	return 0; /* inventories differ in length */
		266
		267	if (ob1->inv->below || ob2->inv->below)
		268	return 0; /* more than one object in inv */
		269
		270	if (!object::can_merge (ob1->inv, ob2->inv))
		271	return 0; /* inventory objects differ */
191		272
192	/* inventory ok - still need to check rest of this object to see	273	/* inventory ok - still need to check rest of this object to see
193	* if it is valid.	274	* if it is valid.
194	*/	275	*/
195	}	276	}
…		…
203		284
204	/* Note sure why the following is the case - either the object has to	285	/* Note sure why the following is the case - either the object has to
205	* be animated or have a very low speed. Is this an attempted monster	286	* be animated or have a very low speed. Is this an attempted monster
206	* check?	287	* check?
207	*/	288	*/
208	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	289	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
209	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
210	return 0;	290	return 0;
211		291
212	switch (ob1->type)	292	switch (ob1->type)
213	{	293	{
214	case SCROLL:	294	case SCROLL:
215	if (ob1->level != ob2->level)	295	if (ob1->level != ob2->level)
216	return 0;	296	return 0;
217	break;	297	break;
218	}	298	}
219		299
220	if (ob1->key_values != NULL || ob2->key_values != NULL)	300	if (ob1->key_values || ob2->key_values)
221	{	301	{
222	/* At least one of these has key_values. */	302	/* At least one of these has key_values. */
223	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	303	if ((!ob1->key_values) != (!ob2->key_values))
224	/* One has fields, but the other one doesn't. */	304	return 0; /* One has fields, but the other one doesn't. */
225	return 0;	305
226	else if (!compare_ob_value_lists (ob1, ob2))	306	if (!compare_ob_value_lists (ob1, ob2))
227	return 0;	307	return 0;
228	}	308	}
229		309
230	//TODO: generate an event or call into perl for additional checks
231	if (ob1->self || ob2->self)	310	if (ob1->self || ob2->self)
232	{	311	{
233	ob1->optimise ();	312	ob1->optimise ();
234	ob2->optimise ();	313	ob2->optimise ();
235		314
236	if (ob1->self || ob2->self)	315	if (ob1->self || ob2->self)
237	return 0;	316	{
		317	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		318	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		319
		320	if (k1 != k2)
		321	return 0;
		322
		323	if (k1 == 0)
		324	return 1;
		325
		326	if (!cfperl_can_merge (ob1, ob2))
		327	return 0;
		328	}
238	}	329	}
239		330
240	/* Everything passes, must be OK. */	331	/* Everything passes, must be OK. */
241	return 1;	332	return 1;
242	}	333	}
		334
		335	// find player who can see this object
		336	object *
		337	object::visible_to () const
		338	{
		339	if (!flag [FLAG_REMOVED])
		340	{
		341	// see if we are in a container of sorts
		342	if (env)
		343	{
		344	// the player inventory itself is always visible
		345	if (env->type == PLAYER)
		346	return env;
		347
		348	// else a player could have our env open
		349	object *envest = env->outer_env ();
		350
		351	// the player itself is always on a map, so we will find him here
		352	// even if our inv is in a player.
		353	if (envest->is_on_map ())
		354	if (object *pl = envest->ms ().player ())
		355	if (pl->container == env)
		356	return pl;
		357	}
		358	else
		359	{
		360	// maybe there is a player standing on the same mapspace
		361	// this will catch the case where "this" is a player
		362	if (object *pl = ms ().player ())
		363	return pl;
		364	}
		365	}
		366
		367	return 0;
		368	}
		369
		370	// adjust weight per container type ("of holding")
		371	static sint32
		372	weight_adjust (object *op, sint32 weight)
		373	{
		374	return op->type == CONTAINER
		375	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		376	: weight;
		377	}
		378
243	/*	379	/*
		380	* adjust_weight(object, weight) adds the specified weight to an object,
		381	* and also updates how much the environment(s) is/are carrying.
		382	*/
		383	static void
		384	adjust_weight (object *op, sint32 weight)
		385	{
		386	while (op)
		387	{
		388	weight = weight_adjust (op, weight);
		389
		390	if (!weight)
		391	return;
		392
		393	op->carrying += weight;
		394
		395	if (object *pl = op->visible_to ())
		396	esrv_update_item (UPD_WEIGHT, pl, op);
		397
		398	op = op->env;
		399	}
		400	}
		401
		402	/*
244	* sum_weight() is a recursive function which calculates the weight	403	* this is a recursive function which calculates the weight
245	* an object is carrying. It goes through in figures out how much	404	* an object is carrying. It goes through op and figures out how much
246	* containers are carrying, and sums it up.	405	* containers are carrying, and sums it up.
247	*/	406	*/
248	signed long sum_weight(object *op) {	407	void
249	signed long sum;	408	object::update_weight ()
250	object *inv;	409	{
251	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	410	sint32 sum = 0;
		411
		412	for (object *op = inv; op; op = op->below)
		413	{
252	if (inv->inv)	414	if (op->inv)
253	sum_weight(inv);	415	op->update_weight ();
254	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	416
		417	sum += op->total_weight ();
255	}	418	}
256	if (op->type == CONTAINER && op->stats.Str)	419
257	sum = (sum * (100 - op->stats.Str))/100;	420	sum = weight_adjust (this, sum);
258	if(op->carrying != sum)	421
		422	if (sum != carrying)
		423	{
259	op->carrying = sum;	424	carrying = sum;
260	return sum;
261	}
262		425
		426	if (object *pl = visible_to ())
		427	esrv_update_item (UPD_WEIGHT, pl, this);
		428	}
		429	}
		430
263	/**	431	/*
264	* Return the outermost environment object for a given object.	432	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
265	*/	433	*/
266		434	char *
267	object *object_get_env_recursive (object *op) {
268	while (op->env != NULL)
269	op = op->env;
270	return op;
271	}
272
273	/*
274	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
275	* a better check. We basically keeping traversing up until we can't
276	* or find a player.
277	*/
278
279	object *is_player_inv (object *op) {
280	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
281	if (op->env==op)
282	op->env = NULL;
283	return op;
284	}
285
286	/*
287	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
288	* Some error messages.
289	* The result of the dump is stored in the static global errmsg array.
290	*/
291
292	void dump_object2(object *op) {
293	errmsg[0] = 0;
294	return;
295	//TODO//D#d#
296	#if 0
297	char *cp;
298	/* object *tmp;*/
299
300	if(op->arch!=NULL) {
301	strcat(errmsg,"arch ");
302	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
303	strcat(errmsg,"\n");
304	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
305	strcat(errmsg,cp);
306	#if 0
307	/* Don't dump player diffs - they are too long, mostly meaningless, and
308	* will overflow the buffer.
309	* Changed so that we don't dump inventory either. This may
310	* also overflow the buffer.
311	*/
312	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
313	strcat(errmsg,cp);
314	for (tmp=op->inv; tmp; tmp=tmp->below)
315	dump_object2(tmp);
316	#endif
317	strcat(errmsg,"end\n");
318	} else {
319	strcat(errmsg,"Object ");
320	if (op->name==NULL) strcat(errmsg, "(null)");
321	else strcat(errmsg,op->name);
322	strcat(errmsg,"\n");
323	#if 0
324	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
325	strcat(errmsg,cp);
326	for (tmp=op->inv; tmp; tmp=tmp->below)
327	dump_object2(tmp);
328	#endif
329	strcat(errmsg,"end\n");
330	}
331	#endif
332	}
333
334	/*
335	* Dumps an object. Returns output in the static global errmsg array.
336	*/
337
338	void dump_object(object *op) {	435	dump_object (object *op)
339	if(op==NULL) {	436	{
340	strcpy(errmsg,"[NULL pointer]");	437	if (!op)
341	return;	438	return strdup ("[NULLOBJ]");
342	}
343	errmsg[0]='\0';
344	dump_object2(op);
345	}
346		439
347	void dump_all_objects(void) {	440	object_freezer freezer;
348	object *op;	441	op->write (freezer);
349	for(op=objects;op!=NULL;op=op->next) {	442	return freezer.as_string ();
350	dump_object(op);
351	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
352	}
353	}	443	}
354		444
355	/*	445	/*
356	* get_nearest_part(multi-object, object 2) returns the part of the	446	* get_nearest_part(multi-object, object 2) returns the part of the
357	* multi-object 1 which is closest to the second object.	447	* multi-object 1 which is closest to the second object.
358	* If it's not a multi-object, it is returned.	448	* If it's not a multi-object, it is returned.
359	*/	449	*/
360		450	object *
361	object *get_nearest_part(object *op, const object *pl) {	451	get_nearest_part (object *op, const object *pl)
		452	{
362	object *tmp,*closest;	453	object *tmp, *closest;
363	int last_dist,i;	454	int last_dist, i;
		455
364	if(op->more==NULL)	456	if (!op->more)
365	return op;	457	return op;
		458
366	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	459	for (last_dist = distance (op, pl), closest = op, tmp = op->more;
		460	tmp;
		461	tmp = tmp->more)
367	if((i=distance(tmp,pl))<last_dist)	462	if ((i = distance (tmp, pl)) < last_dist)
368	closest=tmp,last_dist=i;	463	closest = tmp, last_dist = i;
		464
369	return closest;	465	return closest;
370	}	466	}
371		467
372	/*	468	/*
373	* Returns the object which has the count-variable equal to the argument.	469	* Returns the object which has the count-variable equal to the argument.
		470	* VERRRY slow.
374	*/	471	*/
375		472	object *
376	object *find_object(tag_t i) {	473	find_object (tag_t i)
377	object *op;	474	{
378	for(op=objects;op!=NULL;op=op->next)	475	for_all_objects (op)
379	if(op->count==i)	476	if (op->count == i)
380	break;
381	return op;	477	return op;
		478
		479	return 0;
382	}	480	}
383		481
384	/*	482	/*
385	* Returns the first object which has a name equal to the argument.	483	* Returns the first object which has a name equal to the argument.
386	* Used only by the patch command, but not all that useful.	484	* Used only by the patch command, but not all that useful.
387	* Enables features like "patch <name-of-other-player> food 999"	485	* Enables features like "patch <name-of-other-player> food 999"
388	*/	486	*/
389		487	object *
390	object *find_object_name(const char *str) {	488	find_object_name (const char *str)
391	const char *name = shstr::find (str);	489	{
		490	shstr_cmp str_ (str);
392	object *op;	491	object *op;
393	for(op=objects;op!=NULL;op=op->next)	492
		493	for_all_objects (op)
394	if(&op->name == name)	494	if (op->name == str_)
395	break;	495	break;
396		496
397	return op;	497	return op;
398	}
399
400	void free_all_object_data ()
401	{
402	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
403	}
404
405	/*
406	* Returns the object which this object marks as being the owner.
407	* A id-scheme is used to avoid pointing to objects which have been
408	* freed and are now reused. If this is detected, the owner is
409	* set to NULL, and NULL is returned.
410	* Changed 2004-02-12 - if the player is setting at the play again
411	* prompt, he is removed, and we don't want to treat him as an owner of
412	* anything, so check removed flag. I don't expect that this should break
413	* anything - once an object is removed, it is basically dead anyways.
414	*/
415
416	object *get_owner(object *op) {
417	if(op->owner==NULL)
418	return NULL;
419
420	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
421	op->owner->count==op->ownercount)
422	return op->owner;
423
424	op->owner=NULL;
425	op->ownercount=0;
426	return NULL;
427	}
428
429	void clear_owner(object *op)
430	{
431	if (!op) return;
432
433	if (op->owner && op->ownercount == op->owner->count)
434	op->owner->refcount--;
435
436	op->owner = NULL;
437	op->ownercount = 0;
438	}	498	}
439		499
440	/*	500	/*
441	* Sets the owner and sets the skill and exp pointers to owner's current	501	* Sets the owner and sets the skill and exp pointers to owner's current
442	* skill and experience objects.	502	* skill and experience objects.
		503	* ACTUALLY NO! investigate! TODO
443	*/	504	*/
444	void set_owner (object *op, object *owner)	505	void
		506	object::set_owner (object *owner)
445	{	507	{
446	if(owner==NULL||op==NULL)	508	// allow objects which own objects
		509	if (owner)
		510	while (owner->owner)
		511	owner = owner->owner;
		512
		513	if (flag [FLAG_FREED])
		514	{
		515	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
447	return;	516	return;
		517	}
448		518
449	/* next line added to allow objects which own objects */
450	/* Add a check for ownercounts in here, as I got into an endless loop
451	* with the fireball owning a poison cloud which then owned the
452	* fireball. I believe that was caused by one of the objects getting
453	* freed and then another object replacing it. Since the ownercounts
454	* didn't match, this check is valid and I believe that cause is valid.
455	*/
456	while (owner->owner && owner!=owner->owner &&
457	owner->ownercount==owner->owner->count) owner=owner->owner;
458
459	/* IF the owner still has an owner, we did not resolve to a final owner.
460	* so lets not add to that.
461	*/
462	if (owner->owner) return;
463
464	op->owner=owner;	519	this->owner = owner;
465
466	op->ownercount=owner->count;
467	owner->refcount++;
468
469	}	520	}
470		521
471	/* Set the owner to clone's current owner and set the skill and experience	522	int
472	* objects to clone's objects (typically those objects that where the owner's	523	object::slottype () const
473	* current skill and experience objects at the time when clone's owner was
474	* set - not the owner's current skill and experience objects).
475	*
476	* Use this function if player created an object (e.g. fire bullet, swarm
477	* spell), and this object creates further objects whose kills should be
478	* accounted for the player's original skill, even if player has changed
479	* skills meanwhile.
480	*/
481	void copy_owner (object *op, object *clone)
482	{	524	{
483	object *owner = get_owner (clone);	525	if (type == SKILL)
484	if (owner == NULL) {	526	{
485	/* players don't have owners - they own themselves. Update	527	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
486	* as appropriate.	528	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		529	}
		530	else
		531	{
		532	if (slot [body_combat].info) return slot_combat;
		533	if (slot [body_range ].info) return slot_ranged;
		534	}
		535
		536	return slot_none;
		537	}
		538
		539	bool
		540	object::change_weapon (object *ob)
		541	{
		542	if (current_weapon == ob)
		543	return true;
		544
		545	if (chosen_skill)
		546	chosen_skill->flag [FLAG_APPLIED] = false;
		547
		548	current_weapon = ob;
		549	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		550
		551	if (chosen_skill)
		552	chosen_skill->flag [FLAG_APPLIED] = true;
		553
		554	update_stats ();
		555
		556	if (ob)
		557	{
		558	// now check wether any body locations became invalid, in which case
		559	// we cannot apply the weapon at the moment.
		560	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		561	if (slot[i].used < 0)
487	*/	562	{
488	if (clone->type == PLAYER) owner=clone;	563	current_weapon = chosen_skill = 0;
489	else return;	564	update_stats ();
		565
		566	new_draw_info_format (NDI_UNIQUE, 0, this,
		567	"You try to balance all your items at once, "
		568	"but the %s is just too much for your body. "
		569	"[You need to unapply some items first.]", &ob->name);
		570	return false;
		571	}
		572
		573	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		574	}
		575	else
		576	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		577
		578	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
490	}	579	{
491	set_owner(op, owner);	580	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		581	&name, ob->debug_desc ());
		582	return false;
		583	}
492		584
		585	return true;
493	}	586	}
494		587
495	/* Zero the key_values on op, decrementing the shared-string	588	/* Zero the key_values on op, decrementing the shared-string
496	* refcounts and freeing the links.	589	* refcounts and freeing the links.
497	*/	590	*/
		591	static void
498	static void free_key_values(object * op)	592	free_key_values (object *op)
499	{	593	{
500	for (key_value *i = op->key_values; i != 0; )	594	for (key_value *i = op->key_values; i; )
501	{	595	{
502	key_value *next = i->next;	596	key_value *next = i->next;
503	delete i;	597	delete i;
		598
504	i = next;	599	i = next;
505	}	600	}
506		601
507	op->key_values = 0;	602	op->key_values = 0;
508	}	603	}
509		604
510	void object::clear ()	605	object &
		606	object::operator =(const object &src)
511	{	607	{
512	attachable_base::clear ();	608	bool is_freed = flag [FLAG_FREED];
		609	bool is_removed = flag [FLAG_REMOVED];
513		610
514	free_key_values (this);	611	*(object_copy *)this = src;
515		612
516	name = 0;	613	flag [FLAG_FREED] = is_freed;
517	name_pl = 0;	614	flag [FLAG_REMOVED] = is_removed;
518	title = 0;
519	race = 0;
520	slaying = 0;
521	skill = 0;
522	msg = 0;
523	lore = 0;
524	custom_name = 0;
525	materialname = 0;
526
527	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
528
529	SET_FLAG (this, FLAG_REMOVED);
530	}
531
532	void object::clone (object *destination)
533	{
534	*(object_copy *)destination = *(object_copy *)this;
535	*(object_pod *)destination = *(object_pod *)this;
536
537	if (self || cb)
538	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
539	}
540
541	/*
542	* clear_object() frees everything allocated by an object, and also
543	* clears all variables and flags to default settings.
544	*/
545
546	void clear_object (object *op)
547	{
548	op->clear ();
549
550	op->contr = NULL;
551	op->below = NULL;
552	op->above = NULL;
553	op->inv = NULL;
554	op->container=NULL;
555	op->env=NULL;
556	op->more=NULL;
557	op->head=NULL;
558	op->map=NULL;
559	op->refcount=0;
560	op->active_next = NULL;
561	op->active_prev = NULL;
562	/* What is not cleared is next, prev, and count */
563
564	op->expmul = 1.0;
565	op->face = blank_face;
566	op->attacked_by_count = -1;
567
568	if (settings.casting_time)
569	op->casting_time = -1;
570	}
571
572	/*
573	* copy object first frees everything allocated by the second object,
574	* and then copies the contends of the first object into the second
575	* object, allocating what needs to be allocated. Basically, any
576	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
577	* if the first object is freed, the pointers in the new object
578	* will point at garbage.
579	*/
580
581	void copy_object (object *op2, object *op)
582	{
583	bool is_freed = QUERY_FLAG (op, FLAG_FREED);
584	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);
585
586	op2->clone (op);
587
588	if (is_freed) SET_FLAG (op, FLAG_FREED);
589	if (is_removed) SET_FLAG (op, FLAG_REMOVED);
590
591	if (op2->speed < 0)
592	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
593		615
594	/* Copy over key_values, if any. */	616	/* Copy over key_values, if any. */
595	if (op2->key_values != NULL)	617	if (src.key_values)
596	{	618	{
597	key_value *tail = NULL;	619	key_value *tail = 0;
598	key_value *i;
599
600	op->key_values = NULL;	620	key_values = 0;
601		621
602	for (i = op2->key_values; i != NULL; i = i->next)	622	for (key_value *i = src.key_values; i; i = i->next)
603	{	623	{
604	key_value *new_link = new key_value;	624	key_value *new_link = new key_value;
605		625
606	new_link->next = NULL;	626	new_link->next = 0;
607	new_link->key = i->key;	627	new_link->key = i->key;
608	new_link->value = i->value;	628	new_link->value = i->value;
609		629
610	/* Try and be clever here, too. */	630	/* Try and be clever here, too. */
611	if (op->key_values == NULL)	631	if (!key_values)
612	{	632	{
613	op->key_values = new_link;	633	key_values = new_link;
614	tail = new_link;	634	tail = new_link;
615	}	635	}
616	else	636	else
617	{	637	{
618	tail->next = new_link;	638	tail->next = new_link;
619	tail = new_link;	639	tail = new_link;
620	}	640	}
621	}	641	}
622	}	642	}
		643	}
623		644
624	update_ob_speed (op);	645	/*
		646	* copy_to first frees everything allocated by the dst object,
		647	* and then copies the contents of itself into the second
		648	* object, allocating what needs to be allocated. Basically, any
		649	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
		650	* if the first object is freed, the pointers in the new object
		651	* will point at garbage.
		652	*/
		653	void
		654	object::copy_to (object *dst)
		655	{
		656	*dst = *this;
		657
		658	if (speed < 0)
		659	dst->speed_left -= rndm ();
		660
		661	dst->set_speed (dst->speed);
		662	}
		663
		664	void
		665	object::instantiate ()
		666	{
		667	if (!uuid.seq) // HACK
		668	uuid = UUID::gen ();
		669
		670	speed_left = -0.1f;
		671	/* copy the body_info to the body_used - this is only really
		672	* need for monsters, but doesn't hurt to do it for everything.
		673	* by doing so, when a monster is created, it has good starting
		674	* values for the body_used info, so when items are created
		675	* for it, they can be properly equipped.
		676	*/
		677	for (int i = NUM_BODY_LOCATIONS; i--; )
		678	slot[i].used = slot[i].info;
		679
		680	attachable::instantiate ();
		681	}
		682
		683	object *
		684	object::clone ()
		685	{
		686	object *neu = create ();
		687	copy_to (neu);
		688	return neu;
625	}	689	}
626		690
627	/*	691	/*
628	* If an object with the IS_TURNABLE() flag needs to be turned due	692	* If an object with the IS_TURNABLE() flag needs to be turned due
629	* to the closest player being on the other side, this function can	693	* to the closest player being on the other side, this function can
630	* be called to update the face variable, _and_ how it looks on the map.	694	* be called to update the face variable, _and_ how it looks on the map.
631	*/	695	*/
632		696	void
633	void update_turn_face(object *op) {	697	update_turn_face (object *op)
		698	{
634	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	699	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
635	return;	700	return;
		701
636	SET_ANIMATION(op, op->direction);	702	SET_ANIMATION (op, op->direction);
637	update_object(op,UP_OBJ_FACE);	703	update_object (op, UP_OBJ_FACE);
638	}	704	}
639		705
640	/*	706	/*
641	* Updates the speed of an object. If the speed changes from 0 to another	707	* Updates the speed of an object. If the speed changes from 0 to another
642	* value, or vice versa, then add/remove the object from the active list.	708	* value, or vice versa, then add/remove the object from the active list.
643	* This function needs to be called whenever the speed of an object changes.	709	* This function needs to be called whenever the speed of an object changes.
644	*/	710	*/
645		711	void
646	void update_ob_speed(object *op) {	712	object::set_speed (float speed)
647	extern int arch_init;	713	{
648		714	if (flag [FLAG_FREED] && speed)
649	/* No reason putting the archetypes objects on the speed list,	715	{
650	* since they never really need to be updated.
651	*/
652
653	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
654	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	716	LOG (llevError, "Object %s is freed but has speed.\n", &name);
655	#ifdef MANY_CORES
656	abort();
657	#else
658	op->speed = 0;	717	speed = 0;
659	#endif
660	}	718	}
661	if (arch_init) {
662	return;
663	}
664	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
665	/* If already on active list, don't do anything */
666	if (op->active_next || op->active_prev || op==active_objects)
667	return;
668		719
669	/* process_events() expects us to insert the object at the beginning	720	this->speed = speed;
670	* of the list. */	721
671	op->active_next = active_objects;	722	if (has_active_speed ())
672	if (op->active_next!=NULL)	723	activate ();
673	op->active_next->active_prev = op;
674	active_objects = op;
675	}
676	else {	724	else
677	/* If not on the active list, nothing needs to be done */	725	deactivate ();
678	if (!op->active_next && !op->active_prev && op!=active_objects)
679	return;
680
681	if (op->active_prev==NULL) {
682	active_objects = op->active_next;
683	if (op->active_next!=NULL)
684	op->active_next->active_prev = NULL;
685	}
686	else {
687	op->active_prev->active_next = op->active_next;
688	if (op->active_next)
689	op->active_next->active_prev = op->active_prev;
690	}
691	op->active_next = NULL;
692	op->active_prev = NULL;
693	}
694	}	726	}
695		727
696	/* This function removes object 'op' from the list of active
697	* objects.
698	* This should only be used for style maps or other such
699	* reference maps where you don't want an object that isn't
700	* in play chewing up cpu time getting processed.
701	* The reverse of this is to call update_ob_speed, which
702	* will do the right thing based on the speed of the object.
703	*/
704	void remove_from_active_list(object *op)
705	{
706	/* If not on the active list, nothing needs to be done */
707	if (!op->active_next && !op->active_prev && op!=active_objects)
708	return;
709
710	if (op->active_prev==NULL) {
711	active_objects = op->active_next;
712	if (op->active_next!=NULL)
713	op->active_next->active_prev = NULL;
714	}
715	else {
716	op->active_prev->active_next = op->active_next;
717	if (op->active_next)
718	op->active_next->active_prev = op->active_prev;
719	}
720	op->active_next = NULL;
721	op->active_prev = NULL;
722	}
723
724	/*	728	/*
725	* update_object() updates the array which represents the map.	729	* update_object() updates the the map.
726	* It takes into account invisible objects (and represent squares covered	730	* It takes into account invisible objects (and represent squares covered
727	* by invisible objects by whatever is below them (unless it's another	731	* by invisible objects by whatever is below them (unless it's another
728	* invisible object, etc...)	732	* invisible object, etc...)
729	* If the object being updated is beneath a player, the look-window	733	* If the object being updated is beneath a player, the look-window
730	* of that player is updated (this might be a suboptimal way of	734	* of that player is updated (this might be a suboptimal way of
731	* updating that window, though, since update_object() is called _often_)	735	* updating that window, though, since update_object() is called _often_)
732	*	736	*
733	* action is a hint of what the caller believes need to be done.	737	* action is a hint of what the caller believes need to be done.
734	* For example, if the only thing that has changed is the face (due to
735	* an animation), we don't need to call update_position until that actually
736	* comes into view of a player. OTOH, many other things, like addition/removal
737	* of walls or living creatures may need us to update the flags now.
738	* current action are:	738	* current action are:
739	* UP_OBJ_INSERT: op was inserted	739	* UP_OBJ_INSERT: op was inserted
740	* UP_OBJ_REMOVE: op was removed	740	* UP_OBJ_REMOVE: op was removed
741	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	741	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
742	* as that is easier than trying to look at what may have changed.	742	* as that is easier than trying to look at what may have changed.
743	* UP_OBJ_FACE: only the objects face has changed.	743	* UP_OBJ_FACE: only the objects face has changed.
744	*/	744	*/
745		745	void
746	void update_object(object *op, int action) {	746	update_object (object *op, int action)
747	int update_now=0, flags;	747	{
748	MoveType move_on, move_off, move_block, move_slow;
749
750	if (op == NULL) {	748	if (op == NULL)
		749	{
751	/* this should never happen */	750	/* this should never happen */
752	LOG(llevDebug,"update_object() called for NULL object.\n");	751	LOG (llevDebug, "update_object() called for NULL object.\n");
753	return;	752	return;
754	}
755		753	}
756	if(op->env!=NULL) {	754
		755	if (op->env)
		756	{
757	/* Animation is currently handled by client, so nothing	757	/* Animation is currently handled by client, so nothing
758	* to do in this case.	758	* to do in this case.
759	*/	759	*/
760	return;	760	return;
761	}	761	}
762		762
763	/* If the map is saving, don't do anything as everything is	763	/* If the map is saving, don't do anything as everything is
764	* going to get freed anyways.	764	* going to get freed anyways.
765	*/	765	*/
766	if (!op->map || op->map->in_memory == MAP_SAVING) return;	766	if (!op->map || op->map->in_memory == MAP_SAVING)
767		767	return;
		768
768	/* make sure the object is within map boundaries */	769	/* make sure the object is within map boundaries */
769	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	770	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
770	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	771	{
771	LOG(llevError,"update_object() called for object out of map!\n");	772	LOG (llevError, "update_object() called for object out of map!\n");
772	#ifdef MANY_CORES	773	#ifdef MANY_CORES
773	abort();	774	abort ();
774	#endif	775	#endif
775	return;	776	return;
776	}
777		777	}
778	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
779	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
780	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
781	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
782	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
783	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
784		778
		779	mapspace &m = op->ms ();
		780
		781	if (!(m.flags_ & P_UPTODATE))
		782	/* nop */;
785	if (action == UP_OBJ_INSERT) {	783	else if (action == UP_OBJ_INSERT)
		784	{
		785	// this is likely overkill, TODO: revisit (schmorp)
786	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	786	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
787	update_now=1;
788
789	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	787	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
790	update_now=1;	788	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
791		789	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		790	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
792	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	791	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
793	update_now=1;	792	|| (m.move_on | op->move_on ) != m.move_on
794
795	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
796	update_now=1;
797
798	if (op->type == SAFE_GROUND && !(flags & P_SAFE))
799	update_now=1;
800
801	if ((move_on | op->move_on) != move_on) update_now=1;
802
803	if ((move_off | op->move_off) != move_off) update_now=1;	793	|| (m.move_off | op->move_off ) != m.move_off
804		794	|| (m.move_slow | op->move_slow) != m.move_slow
805	/* This isn't perfect, but I don't expect a lot of objects to	795	/* This isn't perfect, but I don't expect a lot of objects to
806	* to have move_allow right now.	796	* to have move_allow right now.
807	*/	797	*/
808	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	798	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
809	update_now=1;	799	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
810		800	m.flags_ = 0;
811	if ((move_slow | op->move_slow) != move_slow)
812	update_now=1;
813	}	801	}
814	/* if the object is being removed, we can't make intelligent	802	/* if the object is being removed, we can't make intelligent
815	* decisions, because remove_ob can't really pass the object	803	* decisions, because remove_ob can't really pass the object
816	* that is being removed.	804	* that is being removed.
817	*/	805	*/
818	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	806	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
819	update_now=1;	807	m.flags_ = 0;
820	} else if (action == UP_OBJ_FACE) {	808	else if (action == UP_OBJ_FACE)
821	/* Nothing to do for that case */	809	/* Nothing to do for that case */ ;
822	}
823	else {	810	else
824	LOG(llevError,"update_object called with invalid action: %d\n", action);	811	LOG (llevError, "update_object called with invalid action: %d\n", action);
825	}
826		812
827	if (update_now) {
828	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
829	update_position(op->map, op->x, op->y);
830	}
831
832	if(op->more!=NULL)	813	if (op->more)
833	update_object(op->more, action);	814	update_object (op->more, action);
834	}
835
836	static std::vector<object *> mortals;
837
838	void object::free_mortals ()
839	{
840	for (std::vector<object *>::iterator i = mortals.begin (); i != mortals.end (); ++i)
841	delete *i;
842
843	mortals.clear ();
844	}	815	}
845		816
846	object::object ()	817	object::object ()
847	{	818	{
848	SET_FLAG (this, FLAG_REMOVED);	819	SET_FLAG (this, FLAG_REMOVED);
849		820
850	expmul = 1.0;	821	expmul = 1.0;
851	face = blank_face;	822	face = blank_face;
852	attacked_by_count = -1;
853	}	823	}
854		824
855	object::~object ()	825	object::~object ()
856	{	826	{
		827	unlink ();
		828
857	free_key_values (this);	829	free_key_values (this);
858	}	830	}
859		831
		832	static int object_count;
		833
		834	void object::link ()
		835	{
		836	assert (!index);//D
		837	uuid = UUID::gen ();
		838	count = ++object_count;
		839
		840	refcnt_inc ();
		841	objects.insert (this);
		842	}
		843
		844	void object::unlink ()
		845	{
		846	if (!index)
		847	return;
		848
		849	objects.erase (this);
		850	refcnt_dec ();
		851	}
		852
860	void	853	void
861	object::link ()	854	object::activate ()
862	{	855	{
863	count = ++ob_count;	856	/* If already on active list, don't do anything */
		857	if (active)
		858	return;
864		859
865	prev = 0;	860	if (has_active_speed ())
866	next = objects;	861	actives.insert (this);
867
868	if (objects)
869	objects->prev = this;
870
871	objects = this;
872	}	862	}
873		863
874	void	864	void
875	object::unlink ()	865	object::activate_recursive ()
876	{	866	{
877	count = 0;	867	activate ();
878		868
879	/* Remove this object from the list of used objects */	869	for (object *op = inv; op; op = op->below)
880	if (prev) prev->next = next;	870	op->activate_recursive ();
881	if (next) next->prev = prev;	871	}
882	if (this == objects) objects = next;	872
883	}	873	/* This function removes object 'op' from the list of active
		874	* objects.
		875	* This should only be used for style maps or other such
		876	* reference maps where you don't want an object that isn't
		877	* in play chewing up cpu time getting processed.
		878	* The reverse of this is to call update_ob_speed, which
		879	* will do the right thing based on the speed of the object.
		880	*/
		881	void
		882	object::deactivate ()
		883	{
		884	/* If not on the active list, nothing needs to be done */
		885	if (!active)
		886	return;
		887
		888	actives.erase (this);
		889	}
		890
		891	void
		892	object::deactivate_recursive ()
		893	{
		894	for (object *op = inv; op; op = op->below)
		895	op->deactivate_recursive ();
		896
		897	deactivate ();
		898	}
		899
		900	void
		901	object::set_flag_inv (int flag, int value)
		902	{
		903	for (object *op = inv; op; op = op->below)
		904	{
		905	op->flag [flag] = value;
		906	op->set_flag_inv (flag, value);
		907	}
		908	}
		909
		910	/*
		911	* Remove and free all objects in the inventory of the given object.
		912	* object.c ?
		913	*/
		914	void
		915	object::destroy_inv (bool drop_to_ground)
		916	{
		917	// need to check first, because the checks below might segfault
		918	// as we might be on an invalid mapspace and crossfire code
		919	// is too buggy to ensure that the inventory is empty.
		920	// corollary: if you create arrows etc. with stuff in tis inventory,
		921	// cf will crash below with off-map x and y
		922	if (!inv)
		923	return;
		924
		925	/* Only if the space blocks everything do we not process -
		926	* if some form of movement is allowed, let objects
		927	* drop on that space.
		928	*/
		929	if (!drop_to_ground
		930	|| !map
		931	|| map->in_memory != MAP_ACTIVE
		932	|| map->nodrop
		933	|| ms ().move_block == MOVE_ALL)
		934	{
		935	while (inv)
		936	{
		937	inv->destroy_inv (drop_to_ground);
		938	inv->destroy ();
		939	}
		940	}
		941	else
		942	{ /* Put objects in inventory onto this space */
		943	while (inv)
		944	{
		945	object *op = inv;
		946
		947	if (op->flag [FLAG_STARTEQUIP]
		948	|| op->flag [FLAG_NO_DROP]
		949	|| op->type == RUNE
		950	|| op->type == TRAP
		951	|| op->flag [FLAG_IS_A_TEMPLATE]
		952	|| op->flag [FLAG_DESTROY_ON_DEATH])
		953	op->destroy ();
		954	else
		955	map->insert (op, x, y);
		956	}
		957	}
		958	}
884		959
885	object *object::create ()	960	object *object::create ()
886	{	961	{
887	object *op = new object;	962	object *op = new object;
888	op->link ();	963	op->link ();
889	return op;	964	return op;
890	}	965	}
891		966
892	/*
893	* free_object() frees everything allocated by an object, removes
894	* it from the list of used objects, and puts it on the list of
895	* free objects. The IS_FREED() flag is set in the object.
896	* The object must have been removed by remove_ob() first for
897	* this function to succeed.
898	*
899	* If free_inventory is set, free inventory as well. Else drop items in
900	* inventory to the ground.
901	*/
902	void	967	void
903	object::free (bool free_inventory)	968	object::do_destroy ()
904	{	969	{
905	if (!QUERY_FLAG (this, FLAG_REMOVED))	970	if (flag [FLAG_IS_LINKED])
906	{	971	remove_button_link (this);
907	LOG (llevDebug, "Free object called with non removed object\n");
908	dump_object (this);
909	#ifdef MANY_CORES
910	abort ();
911	#endif
912	}
913		972
914	if (QUERY_FLAG (this, FLAG_FRIENDLY))	973	if (flag [FLAG_FRIENDLY])
915	{
916	LOG (llevMonster, "Warning: tried to free friendly object.\n");
917	remove_friendly_object (this);	974	remove_friendly_object (this);
918	}
919		975
920	if (QUERY_FLAG (this, FLAG_FREED))	976	remove ();
		977
		978	attachable::do_destroy ();
		979
		980	destroy_inv (true);
		981
		982	deactivate ();
		983	unlink ();
		984
		985	flag [FLAG_FREED] = 1;
		986
		987	// hack to ensure that freed objects still have a valid map
		988	{
		989	static maptile *freed_map; // freed objects are moved here to avoid crashes
		990
		991	if (!freed_map)
921	{	992	{
922	dump_object (this);	993	freed_map = new maptile;
923	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	994
924	return;	995	freed_map->path = "<freed objects map>";
		996	freed_map->name = "/internal/freed_objects_map";
		997	freed_map->width = 3;
		998	freed_map->height = 3;
		999	freed_map->nodrop = 1;
		1000
		1001	freed_map->alloc ();
		1002	freed_map->in_memory = MAP_ACTIVE;
925	}	1003	}
		1004
		1005	map = freed_map;
		1006	x = 1;
		1007	y = 1;
		1008	}
926		1009
927	if (more)	1010	if (more)
928	{	1011	{
929	more->free (free_inventory);	1012	more->destroy ();
930	more = 0;	1013	more = 0;
931	}	1014	}
932		1015
933	if (inv)
934	{
935	/* Only if the space blocks everything do we not process -
936	* if some form of movement is allowed, let objects
937	* drop on that space.
938	*/
939	if (free_inventory || !map
940	|| map->in_memory != MAP_IN_MEMORY
941	|| (GET_MAP_MOVE_BLOCK (map, x, y) == MOVE_ALL))
942	{
943	object *op = inv;
944
945	while (op)
946	{
947	object *tmp = op->below;
948	remove_ob (op);
949	op->free (free_inventory);
950	op = tmp;
951	}
952	}
953	else
954	{ /* Put objects in inventory onto this space */
955	object *op = inv;
956
957	while (op)
958	{
959	object *tmp = op->below;
960	remove_ob (op);
961
962	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
963	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
964	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
965	free_object (op);
966	else
967	{
968	op->x = x;
969	op->y = y;
970	insert_ob_in_map (op, map, 0, 0); /* Insert in same map as the envir */
971	}
972
973	op = tmp;
974	}
975	}
976	}
977
978	/* Remove object from the active list */
979	speed = 0;	1016	head = 0;
980	update_ob_speed (this);
981		1017
982	unlink ();	1018	// clear those pointers that likely might cause circular references
983		1019	owner = 0;
984	SET_FLAG (this, FLAG_FREED);	1020	enemy = 0;
985		1021	attacked_by = 0;
986	mortals.push_back (this);	1022	current_weapon = 0;
987	}	1023	}
988		1024
989	/*	1025	void
990	* sub_weight() recursively (outwards) subtracts a number from the	1026	object::destroy (bool destroy_inventory)
991	* weight of an object (and what is carried by it's environment(s)).	1027	{
992	*/	1028	if (destroyed ())
		1029	return;
993		1030
994	void sub_weight (object *op, signed long weight) {	1031	if (destroy_inventory)
995	while (op != NULL) {	1032	destroy_inv (false);
996	if (op->type == CONTAINER) {
997	weight=(signed long)(weight*(100-op->stats.Str)/100);
998	}
999	op->carrying-=weight;
1000	op = op->env;
1001	}
1002	}
1003		1033
1004	/* remove_ob(op):	1034	if (is_head ())
		1035	if (sound_destroy)
		1036	play_sound (sound_destroy);
		1037	else if (flag [FLAG_MONSTER])
		1038	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		1039
		1040	attachable::destroy ();
		1041	}
		1042
		1043	/* op->remove ():
1005	* This function removes the object op from the linked list of objects	1044	* This function removes the object op from the linked list of objects
1006	* which it is currently tied to. When this function is done, the	1045	* which it is currently tied to. When this function is done, the
1007	* object will have no environment. If the object previously had an	1046	* object will have no environment. If the object previously had an
1008	* environment, the x and y coordinates will be updated to	1047	* environment, the x and y coordinates will be updated to
1009	* the previous environment.	1048	* the previous environment.
1010	* Beware: This function is called from the editor as well!
1011	*/	1049	*/
1012		1050	void
1013	void remove_ob(object *op) {	1051	object::do_remove ()
		1052	{
1014	object *tmp,*last=NULL;	1053	object *tmp, *last = 0;
1015	object *otmp;	1054	object *otmp;
1016	tag_t tag;
1017	int check_walk_off;
1018	mapstruct *m;
1019	sint16 x,y;
1020
1021		1055
1022	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1056	if (flag [FLAG_REMOVED])
1023	dump_object(op);	1057	return;
1024	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1025		1058
1026	/* Changed it to always dump core in this case. As has been learned	1059	INVOKE_OBJECT (REMOVE, this);
1027	* in the past, trying to recover from errors almost always
1028	* make things worse, and this is a real error here - something
1029	* that should not happen.
1030	* Yes, if this was a mission critical app, trying to do something
1031	* to recover may make sense, but that is because failure of the app
1032	* may have other disastrous problems. Cf runs out of a script
1033	* so is easily enough restarted without any real problems.
1034	* MSW 2001-07-01
1035	*/
1036	abort();
1037	}
1038	if(op->more!=NULL)
1039	remove_ob(op->more);
1040		1060
1041	SET_FLAG(op, FLAG_REMOVED);	1061	if (object *pl = visible_to ())
		1062	esrv_del_item (pl->contr, count);
1042		1063
		1064	flag [FLAG_REMOVED] = true;
		1065
		1066	if (more)
		1067	more->remove ();
		1068
1043	/*	1069	/*
1044	* In this case, the object to be removed is in someones	1070	* In this case, the object to be removed is in someones
1045	* inventory.	1071	* inventory.
		1072	*/
		1073	if (env)
		1074	{
		1075	adjust_weight (env, -total_weight ());
		1076
		1077	*(above ? &above->below : &env->inv) = below;
		1078
		1079	if (below)
		1080	below->above = above;
		1081
		1082	/* we set up values so that it could be inserted into
		1083	* the map, but we don't actually do that - it is up
		1084	* to the caller to decide what we want to do.
1046	*/	1085	*/
1047	if(op->env!=NULL) {	1086	map = env->map;
1048	if(op->nrof)	1087	x = env->x;
1049	sub_weight(op->env, op->weight*op->nrof);	1088	y = env->y;
1050	else	1089	above = 0;
1051	sub_weight(op->env, op->weight+op->carrying);	1090	below = 0;
		1091	env = 0;
1052		1092
1053	/* NO_FIX_PLAYER is set when a great many changes are being	1093	/* NO_FIX_PLAYER is set when a great many changes are being
1054	* made to players inventory. If set, avoiding the call	1094	* made to players inventory. If set, avoiding the call
1055	* to save cpu time.	1095	* to save cpu time.
		1096	*/
		1097	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
		1098	otmp->update_stats ();
		1099	}
		1100	else if (map)
		1101	{
		1102	if (type == PLAYER)
		1103	{
		1104	// leaving a spot always closes any open container on the ground
		1105	if (container && !container->env)
		1106	// this causes spurious floorbox updates, but it ensures
		1107	// that the CLOSE event is being sent.
		1108	close_container ();
		1109
		1110	--map->players;
		1111	map->touch ();
		1112	}
		1113
		1114	map->dirty = true;
		1115	mapspace &ms = this->ms ();
		1116
		1117	/* link the object above us */
		1118	if (above)
		1119	above->below = below;
		1120	else
		1121	ms.top = below; /* we were top, set new top */
		1122
		1123	/* Relink the object below us, if there is one */
		1124	if (below)
		1125	below->above = above;
		1126	else
		1127	{
		1128	/* Nothing below, which means we need to relink map object for this space
		1129	* use translated coordinates in case some oddness with map tiling is
		1130	* evident
1056	*/	1131	*/
1057	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1132	if (GET_MAP_OB (map, x, y) != this)
1058	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1133	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 ());
1059	fix_player(otmp);
1060		1134
1061	if(op->above!=NULL)	1135	ms.bot = above; /* goes on above it. */
1062	op->above->below=op->below;
1063	else
1064	op->env->inv=op->below;
1065
1066	if(op->below!=NULL)
1067	op->below->above=op->above;
1068
1069	/* we set up values so that it could be inserted into
1070	* the map, but we don't actually do that - it is up
1071	* to the caller to decide what we want to do.
1072	*/	1136	}
1073	op->x=op->env->x,op->y=op->env->y;	1137
1074	op->map=op->env->map;	1138	above = 0;
1075	op->above=NULL,op->below=NULL;	1139	below = 0;
1076	op->env=NULL;	1140
		1141	if (map->in_memory == MAP_SAVING)
1077	return;	1142	return;
1078	}
1079		1143
1080	/* If we get here, we are removing it from a map */	1144	int check_walk_off = !flag [FLAG_NO_APPLY];
1081	if (op->map == NULL) return;
1082		1145
1083	x = op->x;	1146	if (object *pl = ms.player ())
1084	y = op->y;
1085	m = get_map_from_coord(op->map, &x, &y);
1086
1087	if (!m) {
1088	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1089	op->map->path, op->x, op->y);
1090	/* in old days, we used to set x and y to 0 and continue.
1091	* it seems if we get into this case, something is probablye
1092	* screwed up and should be fixed.
1093	*/
1094	abort();
1095	}
1096	if (op->map != m) {
1097	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1098	op->map->path, m->path, op->x, op->y, x, y);
1099	}
1100
1101	/* Re did the following section of code - it looks like it had
1102	* lots of logic for things we no longer care about
1103	*/
1104
1105	/* link the object above us */
1106	if (op->above)
1107	op->above->below=op->below;
1108	else
1109	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1110
1111	/* Relink the object below us, if there is one */
1112	if(op->below) {
1113	op->below->above=op->above;
1114	} else {
1115	/* Nothing below, which means we need to relink map object for this space
1116	* use translated coordinates in case some oddness with map tiling is
1117	* evident
1118	*/
1119	if(GET_MAP_OB(m,x,y)!=op) {
1120	dump_object(op);
1121	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);
1122	dump_object(GET_MAP_OB(m,x,y));
1123	LOG(llevError,"%s\n",errmsg);
1124	}	1147	{
1125	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1148	if (pl->container == this)
1126	}
1127	op->above=NULL;
1128	op->below=NULL;
1129
1130	if (op->map->in_memory == MAP_SAVING)
1131	return;
1132
1133	tag = op->count;
1134	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1135	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1136	/* No point updating the players look faces if he is the object
1137	* being removed.
1138	*/
1139
1140	if(tmp->type==PLAYER && tmp!=op) {
1141	/* If a container that the player is currently using somehow gets	1149	/* If a container that the player is currently using somehow gets
1142	* removed (most likely destroyed), update the player view	1150	* removed (most likely destroyed), update the player view
1143	* appropriately.	1151	* appropriately.
1144	*/	1152	*/
1145	if (tmp->container==op) {	1153	pl->close_container ();
1146	CLEAR_FLAG(op, FLAG_APPLIED);	1154
1147	tmp->container=NULL;	1155	pl->contr->ns->floorbox_update ();
		1156	}
		1157
		1158	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1159	{
		1160	/* No point updating the players look faces if he is the object
		1161	* being removed.
		1162	*/
		1163
		1164	/* See if object moving off should effect something */
		1165	if (check_walk_off
		1166	&& ((move_type & tmp->move_off)
		1167	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1168	{
		1169	move_apply (tmp, this, 0);
		1170
		1171	if (destroyed ())
		1172	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1148	}	1173	}
1149	tmp->contr->socket.update_look=1;	1174
		1175	last = tmp;
1150	}	1176	}
1151	/* See if player moving off should effect something */
1152	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1153	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1154		1177
1155	move_apply(tmp, op, NULL);
1156	if (was_destroyed (op, tag)) {
1157	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1158	"leaving object\n", &tmp->name, &tmp->arch->name);
1159	}
1160	}
1161
1162	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1163
1164	if(tmp->above == tmp)
1165	tmp->above = NULL;
1166	last=tmp;
1167	}
1168	/* last == NULL of there are no objects on this space */	1178	/* last == NULL if there are no objects on this space */
1169	if (last==NULL) {	1179	//TODO: this makes little sense, why only update the topmost object?
1170	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1180	if (!last)
1171	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1181	map->at (x, y).flags_ = 0;
1172	* those out anyways, and if there are any flags set right now, they won't
1173	* be correct anyways.
1174	*/
1175	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1176	update_position(op->map, op->x, op->y);
1177	}
1178	else	1182	else
1179	update_object(last, UP_OBJ_REMOVE);	1183	update_object (last, UP_OBJ_REMOVE);
1180		1184
1181	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1185	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1182	update_all_los(op->map, op->x, op->y);	1186	update_all_los (map, x, y);
1183		1187	}
1184	}	1188	}
1185		1189
1186	/*	1190	/*
1187	* merge_ob(op,top):	1191	* merge_ob(op,top):
1188	*	1192	*
1189	* This function goes through all objects below and including top, and	1193	* This function goes through all objects below and including top, and
1190	* merges op to the first matching object.	1194	* merges op to the first matching object.
1191	* If top is NULL, it is calculated.	1195	* If top is NULL, it is calculated.
1192	* Returns pointer to object if it succeded in the merge, otherwise NULL	1196	* Returns pointer to object if it succeded in the merge, otherwise NULL
1193	*/	1197	*/
1194		1198	object *
1195	object *merge_ob(object *op, object *top) {	1199	merge_ob (object *op, object *top)
		1200	{
1196	if(!op->nrof)	1201	if (!op->nrof)
1197	return 0;	1202	return 0;
1198	if(top==NULL)	1203
		1204	if (!top)
1199	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1205	for (top = op; top && top->above; top = top->above)
		1206	;
		1207
1200	for(;top!=NULL;top=top->below) {	1208	for (; top; top = top->below)
1201	if(top==op)	1209	if (object::can_merge (op, top))
1202	continue;
1203	if (CAN_MERGE(op,top))
1204	{	1210	{
1205	top->nrof+=op->nrof;	1211	top->nrof += op->nrof;
1206	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1212
1207	op->weight = 0; /* Don't want any adjustements now */	1213	if (object *pl = top->visible_to ())
1208	remove_ob(op);	1214	esrv_update_item (UPD_NROF, pl, top);
1209	free_object(op);	1215
		1216	op->weight = 0; // cancel the addition above
		1217	op->carrying = 0; // must be 0 already
		1218
		1219	op->destroy (1);
		1220
1210	return top;	1221	return top;
1211	}	1222	}
1212	}	1223
1213	return NULL;	1224	return 0;
1214	}	1225	}
1215		1226
		1227	void
		1228	object::expand_tail ()
		1229	{
		1230	if (more)
		1231	return;
		1232
		1233	object *prev = this;
		1234
		1235	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1236	{
		1237	object *op = arch_to_object (at);
		1238
		1239	op->name = name;
		1240	op->name_pl = name_pl;
		1241	op->title = title;
		1242
		1243	op->head = this;
		1244	prev->more = op;
		1245
		1246	prev = op;
		1247	}
		1248	}
		1249
1216	/*	1250	/*
1217	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1251	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1218	* job preparing multi-part monsters	1252	* job preparing multi-part monsters.
1219	*/	1253	*/
		1254	object *
1220	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1255	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1221	object* tmp;	1256	{
1222	if (op->head)	1257	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1223	op=op->head;	1258	{
1224	for (tmp=op;tmp;tmp=tmp->more){
1225	tmp->x=x+tmp->arch->clone.x;	1259	tmp->x = x + tmp->arch->x;
1226	tmp->y=y+tmp->arch->clone.y;	1260	tmp->y = y + tmp->arch->y;
1227	}	1261	}
		1262
1228	return insert_ob_in_map (op, m, originator, flag);	1263	return insert_ob_in_map (op, m, originator, flag);
1229	}	1264	}
1230		1265
1231	/*	1266	/*
1232	* insert_ob_in_map (op, map, originator, flag):	1267	* insert_ob_in_map (op, map, originator, flag):
1233	* This function inserts the object in the two-way linked list	1268	* This function inserts the object in the two-way linked list
…		…
1246	* Return value:	1281	* Return value:
1247	* new object if 'op' was merged with other object	1282	* new object if 'op' was merged with other object
1248	* NULL if 'op' was destroyed	1283	* NULL if 'op' was destroyed
1249	* just 'op' otherwise	1284	* just 'op' otherwise
1250	*/	1285	*/
1251		1286	object *
1252	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1287	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1253	{	1288	{
		1289	assert (!op->flag [FLAG_FREED]);
		1290
1254	object *tmp, *top, *floor=NULL;	1291	object *top, *floor = NULL;
1255	sint16 x,y;
1256		1292
1257	if (QUERY_FLAG (op, FLAG_FREED)) {	1293	op->remove ();
1258	LOG (llevError, "Trying to insert freed object!\n");	1294
1259	return NULL;	1295	/* Ideally, the caller figures this out. However, it complicates a lot
		1296	* of areas of callers (eg, anything that uses find_free_spot would now
		1297	* need extra work
		1298	*/
		1299	if (!xy_normalise (m, op->x, op->y))
1260	}	1300	{
1261	if(m==NULL) {	1301	op->destroy ();
1262	dump_object(op);
1263	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1264	return op;	1302	return 0;
1265	}	1303	}
1266	if(out_of_map(m,op->x,op->y)) {	1304
1267	dump_object(op);	1305	if (object *more = op->more)
1268	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1306	if (!insert_ob_in_map (more, m, originator, flag))
1269	#ifdef MANY_CORES
1270	/* Better to catch this here, as otherwise the next use of this object
1271	* is likely to cause a crash. Better to find out where it is getting
1272	* improperly inserted.
1273	*/
1274	abort();
1275	#endif
1276	return op;	1307	return 0;
1277	}
1278	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1279	dump_object(op);
1280	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1281	return op;
1282	}
1283	if(op->more!=NULL) {
1284	/* The part may be on a different map. */
1285		1308
1286	object *more = op->more;	1309	CLEAR_FLAG (op, FLAG_REMOVED);
1287		1310
1288	/* We really need the caller to normalize coordinates - if	1311	op->map = m;
1289	* we set the map, that doesn't work if the location is within	1312	mapspace &ms = op->ms ();
1290	* a map and this is straddling an edge. So only if coordinate	1313
1291	* is clear wrong do we normalize it.	1314	/* this has to be done after we translate the coordinates.
		1315	*/
		1316	if (op->nrof && !(flag & INS_NO_MERGE))
		1317	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1318	if (object::can_merge (op, tmp))
1292	*/	1319	{
1293	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1320	op->nrof += tmp->nrof;
1294	more->map = get_map_from_coord(m, &more->x, &more->y);	1321	tmp->destroy (1);
1295	} else if (!more->map) {
1296	/* For backwards compatibility - when not dealing with tiled maps,
1297	* more->map should always point to the parent.
1298	*/
1299	more->map = m;
1300	}	1322	}
1301		1323
1302	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1324	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1303	if ( ! op->head)	1325	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1304	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1326
1305	return NULL;	1327	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1328	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1329
		1330	if (flag & INS_BELOW_ORIGINATOR)
		1331	{
		1332	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1333	{
		1334	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1335	abort ();
1306	}	1336	}
		1337
		1338	op->above = originator;
		1339	op->below = originator->below;
		1340
		1341	if (op->below)
		1342	op->below->above = op;
		1343	else
		1344	ms.bot = op;
		1345
		1346	/* since *below* originator, no need to update top */
		1347	originator->below = op;
		1348	}
		1349	else
1307	}	1350	{
1308	CLEAR_FLAG(op,FLAG_REMOVED);	1351	top = ms.bot;
1309		1352
1310	/* Ideally, the caller figures this out. However, it complicates a lot	1353	/* If there are other objects, then */
1311	* of areas of callers (eg, anything that uses find_free_spot would now	1354	if (top)
1312	* need extra work	1355	{
1313	*/	1356	object *last = 0;
1314	op->map=get_map_from_coord(m, &op->x, &op->y);
1315	x = op->x;
1316	y = op->y;
1317		1357
1318	/* this has to be done after we translate the coordinates.	1358	/*
1319	*/	1359	* If there are multiple objects on this space, we do some trickier handling.
1320	if(op->nrof && !(flag & INS_NO_MERGE)) {	1360	* We've already dealt with merging if appropriate.
1321	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1361	* Generally, we want to put the new object on top. But if
1322	if (CAN_MERGE(op,tmp)) {	1362	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1323	op->nrof+=tmp->nrof;	1363	* floor, we want to insert above that and no further.
1324	remove_ob(tmp);	1364	* Also, if there are spell objects on this space, we stop processing
1325	free_object(tmp);	1365	* once we get to them. This reduces the need to traverse over all of
		1366	* them when adding another one - this saves quite a bit of cpu time
		1367	* when lots of spells are cast in one area. Currently, it is presumed
		1368	* that flying non pickable objects are spell objects.
		1369	*/
		1370	for (top = ms.bot; top; top = top->above)
		1371	{
		1372	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1373	floor = top;
		1374
		1375	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1376	{
		1377	/* We insert above top, so we want this object below this */
		1378	top = top->below;
		1379	break;
		1380	}
		1381
		1382	last = top;
1326	}	1383	}
1327	}
1328		1384
1329	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1385	/* Don't want top to be NULL, so set it to the last valid object */
1330	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1386	top = last;
1331	if (!QUERY_FLAG(op, FLAG_ALIVE))
1332	CLEAR_FLAG(op, FLAG_NO_STEAL);
1333		1387
1334	if (flag & INS_BELOW_ORIGINATOR) {	1388	/* We let update_position deal with figuring out what the space
1335	if (originator->map != op->map || originator->x != op->x ||	1389	* looks like instead of lots of conditions here.
1336	originator->y != op->y) {	1390	* makes things faster, and effectively the same result.
1337	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1391	*/
1338	abort();	1392
		1393	/* Have object 'fall below' other objects that block view.
		1394	* Unless those objects are exits.
		1395	* If INS_ON_TOP is used, don't do this processing
		1396	* Need to find the object that in fact blocks view, otherwise
		1397	* stacking is a bit odd.
		1398	*/
		1399	if (!(flag & INS_ON_TOP)
		1400	&& ms.flags () & P_BLOCKSVIEW
		1401	&& (op->face && !faces [op->face].visibility))
		1402	{
		1403	for (last = top; last != floor; last = last->below)
		1404	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1405	break;
		1406
		1407	/* Check to see if we found the object that blocks view,
		1408	* and make sure we have a below pointer for it so that
		1409	* we can get inserted below this one, which requires we
		1410	* set top to the object below us.
		1411	*/
		1412	if (last && last->below && last != floor)
		1413	top = last->below;
		1414	}
		1415	} /* If objects on this space */
		1416
		1417	if (flag & INS_ABOVE_FLOOR_ONLY)
		1418	top = floor;
		1419
		1420	/* Top is the object that our object (op) is going to get inserted above.
		1421	*/
		1422
		1423	/* First object on this space */
		1424	if (!top)
		1425	{
		1426	op->above = ms.bot;
		1427
		1428	if (op->above)
		1429	op->above->below = op;
		1430
		1431	op->below = 0;
		1432	ms.bot = op;
1339	}	1433	}
1340	op->above = originator;
1341	op->below = originator->below;
1342	if (op->below) op->below->above = op;
1343	else SET_MAP_OB(op->map, op->x, op->y, op);
1344	/* since *below* originator, no need to update top */
1345	originator->below = op;
1346	} else {	1434	else
1347	/* If there are other objects, then */
1348	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1349	object *last=NULL;
1350	/*
1351	* If there are multiple objects on this space, we do some trickier handling.
1352	* We've already dealt with merging if appropriate.
1353	* Generally, we want to put the new object on top. But if
1354	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1355	* floor, we want to insert above that and no further.
1356	* Also, if there are spell objects on this space, we stop processing
1357	* once we get to them. This reduces the need to traverse over all of
1358	* them when adding another one - this saves quite a bit of cpu time
1359	* when lots of spells are cast in one area. Currently, it is presumed
1360	* that flying non pickable objects are spell objects.
1361	*/
1362
1363	while (top != NULL) {
1364	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1365	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1366	if (QUERY_FLAG(top, FLAG_NO_PICK)
1367	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1368	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1369	{
1370	/* We insert above top, so we want this object below this */
1371	top=top->below;
1372	break;
1373	}
1374	last = top;
1375	top = top->above;
1376	}
1377	/* Don't want top to be NULL, so set it to the last valid object */
1378	top = last;
1379
1380	/* We let update_position deal with figuring out what the space
1381	* looks like instead of lots of conditions here.
1382	* makes things faster, and effectively the same result.
1383	*/
1384
1385	/* Have object 'fall below' other objects that block view.
1386	* Unless those objects are exits, type 66
1387	* If INS_ON_TOP is used, don't do this processing
1388	* Need to find the object that in fact blocks view, otherwise
1389	* stacking is a bit odd.
1390	*/
1391	if (!(flag & INS_ON_TOP) &&
1392	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1393	(op->face && !op->face->visibility)) {
1394	for (last=top; last != floor; last=last->below)
1395	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1396	/* Check to see if we found the object that blocks view,
1397	* and make sure we have a below pointer for it so that
1398	* we can get inserted below this one, which requires we
1399	* set top to the object below us.
1400	*/
1401	if (last && last->below && last != floor) top=last->below;
1402	}
1403	} /* If objects on this space */
1404	if (flag & INS_MAP_LOAD)
1405	top = GET_MAP_TOP(op->map,op->x,op->y);
1406	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1407
1408	/* Top is the object that our object (op) is going to get inserted above.
1409	*/
1410
1411	/* First object on this space */
1412	if (!top) {
1413	op->above = GET_MAP_OB(op->map, op->x, op->y);
1414	if (op->above) op->above->below = op;
1415	op->below = NULL;
1416	SET_MAP_OB(op->map, op->x, op->y, op);
1417	} else { /* get inserted into the stack above top */	1435	{ /* get inserted into the stack above top */
1418	op->above = top->above;	1436	op->above = top->above;
		1437
		1438	if (op->above)
1419	if (op->above) op->above->below = op;	1439	op->above->below = op;
		1440
1420	op->below = top;	1441	op->below = top;
1421	top->above = op;	1442	top->above = op;
1422	}	1443	}
		1444
1423	if (op->above==NULL)	1445	if (!op->above)
1424	SET_MAP_TOP(op->map,op->x, op->y, op);	1446	ms.top = op;
1425	} /* else not INS_BELOW_ORIGINATOR */	1447	} /* else not INS_BELOW_ORIGINATOR */
1426		1448
1427	if(op->type==PLAYER)	1449	if (op->type == PLAYER)
		1450	{
1428	op->contr->do_los=1;	1451	op->contr->do_los = 1;
		1452	++op->map->players;
		1453	op->map->touch ();
		1454	}
1429		1455
1430	/* If we have a floor, we know the player, if any, will be above	1456	op->map->dirty = true;
1431	* it, so save a few ticks and start from there.
1432	*/
1433	if (!(flag & INS_MAP_LOAD))
1434	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1435	if (tmp->type == PLAYER)
1436	tmp->contr->socket.update_look=1;
1437	}
1438		1457
		1458	if (object *pl = ms.player ())
		1459	pl->contr->ns->floorbox_update ();
		1460
1439	/* If this object glows, it may affect lighting conditions that are	1461	/* If this object glows, it may affect lighting conditions that are
1440	* visible to others on this map. But update_all_los is really	1462	* visible to others on this map. But update_all_los is really
1441	* an inefficient way to do this, as it means los for all players	1463	* an inefficient way to do this, as it means los for all players
1442	* on the map will get recalculated. The players could very well	1464	* on the map will get recalculated. The players could very well
1443	* be far away from this change and not affected in any way -	1465	* be far away from this change and not affected in any way -
1444	* this should get redone to only look for players within range,	1466	* this should get redone to only look for players within range,
1445	* or just updating the P_NEED_UPDATE for spaces within this area	1467	* or just updating the P_UPTODATE for spaces within this area
1446	* of effect may be sufficient.	1468	* of effect may be sufficient.
1447	*/	1469	*/
1448	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1470	if (op->map->darkness && (op->glow_radius != 0))
1449	update_all_los(op->map, op->x, op->y);	1471	update_all_los (op->map, op->x, op->y);
1450		1472
1451
1452	/* updates flags (blocked, alive, no magic, etc) for this map space */	1473	/* updates flags (blocked, alive, no magic, etc) for this map space */
1453	update_object(op,UP_OBJ_INSERT);	1474	update_object (op, UP_OBJ_INSERT);
1454		1475
		1476	INVOKE_OBJECT (INSERT, op);
1455		1477
1456	/* Don't know if moving this to the end will break anything. However,	1478	/* Don't know if moving this to the end will break anything. However,
1457	* we want to have update_look set above before calling this.	1479	* we want to have floorbox_update called before calling this.
1458	*	1480	*
1459	* check_move_on() must be after this because code called from	1481	* check_move_on() must be after this because code called from
1460	* check_move_on() depends on correct map flags (so functions like	1482	* check_move_on() depends on correct map flags (so functions like
1461	* blocked() and wall() work properly), and these flags are updated by	1483	* blocked() and wall() work properly), and these flags are updated by
1462	* update_object().	1484	* update_object().
1463	*/	1485	*/
1464		1486
1465	/* if this is not the head or flag has been passed, don't check walk on status */	1487	/* if this is not the head or flag has been passed, don't check walk on status */
1466
1467	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1488	if (!(flag & INS_NO_WALK_ON) && op->head_ () == op)
		1489	{
1468	if (check_move_on(op, originator))	1490	if (check_move_on (op, originator))
1469	return NULL;	1491	return 0;
1470		1492
1471	/* If we are a multi part object, lets work our way through the check	1493	/* If we are a multi part object, lets work our way through the check
1472	* walk on's.	1494	* walk on's.
1473	*/	1495	*/
1474	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1496	for (object *tmp = op->more; tmp; tmp = tmp->more)
1475	if (check_move_on (tmp, originator))	1497	if (check_move_on (tmp, originator))
1476	return NULL;	1498	return 0;
1477	}	1499	}
		1500
1478	return op;	1501	return op;
1479	}	1502	}
1480		1503
1481	/* this function inserts an object in the map, but if it	1504	/* this function inserts an object in the map, but if it
1482	* finds an object of its own type, it'll remove that one first.	1505	* finds an object of its own type, it'll remove that one first.
1483	* op is the object to insert it under: supplies x and the map.	1506	* op is the object to insert it under: supplies x and the map.
1484	*/	1507	*/
		1508	void
1485	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1509	replace_insert_ob_in_map (const char *arch_string, object *op)
1486	object *tmp;	1510	{
1487	object *tmp1;
1488
1489	/* first search for itself and remove any old instances */	1511	/* first search for itself and remove any old instances */
1490		1512
1491	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1513	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1492	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1514	if (!strcmp (tmp->arch->archname, arch_string)) /* same archetype */
1493	remove_ob(tmp);	1515	tmp->destroy (1);
1494	free_object(tmp);
1495	}
1496	}
1497		1516
1498	tmp1=arch_to_object(find_archetype(arch_string));	1517	object *tmp = arch_to_object (archetype::find (arch_string));
1499		1518
1500		1519	tmp->x = op->x;
1501	tmp1->x = op->x; tmp1->y = op->y;	1520	tmp->y = op->y;
		1521
1502	insert_ob_in_map(tmp1,op->map,op,0);	1522	insert_ob_in_map (tmp, op->map, op, 0);
1503	}
1504
1505	/*
1506	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1507	* is returned contains nr objects, and the remaining parts contains
1508	* the rest (or is removed and freed if that number is 0).
1509	* On failure, NULL is returned, and the reason put into the
1510	* global static errmsg array.
1511	*/
1512
1513	object *get_split_ob(object *orig_ob, uint32 nr) {
1514	object *newob;
1515	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1516
1517	if(orig_ob->nrof<nr) {
1518	sprintf(errmsg,"There are only %d %ss.",
1519	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1520	return NULL;
1521	}
1522	newob = object_create_clone(orig_ob);
1523	if((orig_ob->nrof-=nr)<1) {
1524	if ( ! is_removed)
1525	remove_ob(orig_ob);
1526	free_object2(orig_ob, 1);
1527	}
1528	else if ( ! is_removed) {
1529	if(orig_ob->env!=NULL)
1530	sub_weight (orig_ob->env,orig_ob->weight*nr);
1531	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1532	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1533	LOG(llevDebug,
1534	"Error, Tried to split object whose map is not in memory.\n");
1535	return NULL;
1536	}
1537	}
1538	newob->nrof=nr;
1539
1540	return newob;
1541	}	1523	}
1542		1524
		1525	object *
		1526	object::insert_at (object *where, object *originator, int flags)
		1527	{
		1528	if (where->env)
		1529	return where->env->insert (this);
		1530	else
		1531	return where->map->insert (this, where->x, where->y, originator, flags);
		1532	}
		1533
1543	/*	1534	/*
1544	* decrease_ob_nr(object, number) decreases a specified number from	1535	* decrease(object, number) decreases a specified number from
1545	* the amount of an object. If the amount reaches 0, the object	1536	* the amount of an object. If the amount reaches 0, the object
1546	* is subsequently removed and freed.	1537	* is subsequently removed and freed.
1547	*	1538	*
1548	* Return value: 'op' if something is left, NULL if the amount reached 0	1539	* Return value: 'op' if something is left, NULL if the amount reached 0
1549	*/	1540	*/
1550		1541	bool
1551	object *decrease_ob_nr (object *op, uint32 i)	1542	object::decrease (sint32 nr)
1552	{	1543	{
1553	object *tmp;	1544	if (!nr)
1554	player *pl;	1545	return true;
1555		1546
1556	if (i == 0) /* objects with op->nrof require this check */	1547	nr = min (nr, nrof);
		1548
		1549	nrof -= nr;
		1550
		1551	if (nrof)
		1552	{
		1553	adjust_weight (env, -weight * nr); // carrying == 0
		1554
		1555	if (object *pl = visible_to ())
		1556	esrv_update_item (UPD_NROF, pl, this);
		1557
		1558	return true;
		1559	}
		1560	else
		1561	{
		1562	destroy (1);
		1563	return false;
		1564	}
		1565	}
		1566
		1567	/*
		1568	* split(ob,nr) splits up ob into two parts. The part which
		1569	* is returned contains nr objects, and the remaining parts contains
		1570	* the rest (or is removed and returned if that number is 0).
		1571	* On failure, NULL is returned.
		1572	*/
		1573	object *
		1574	object::split (sint32 nr)
		1575	{
		1576	int have = number_of ();
		1577
		1578	if (have < nr)
		1579	return 0;
		1580	else if (have == nr)
		1581	{
		1582	remove ();
		1583	return this;
		1584	}
		1585	else
		1586	{
		1587	decrease (nr);
		1588
		1589	object *op = object_create_clone (this);
		1590	op->nrof = nr;
1557	return op;	1591	return op;
1558
1559	if (i > op->nrof)
1560	i = op->nrof;
1561
1562	if (QUERY_FLAG (op, FLAG_REMOVED))
1563	{	1592	}
1564	op->nrof -= i;	1593	}
		1594
		1595	object *
		1596	insert_ob_in_ob (object *op, object *where)
		1597	{
		1598	if (!where)
1565	}	1599	{
1566	else if (op->env != NULL)	1600	char *dump = dump_object (op);
1567	{	1601	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1568	/* is this object in the players inventory, or sub container	1602	free (dump);
1569	* therein?
1570	*/
1571	tmp = is_player_inv (op->env);
1572	/* nope. Is this a container the player has opened?
1573	* If so, set tmp to that player.
1574	* IMO, searching through all the players will mostly
1575	* likely be quicker than following op->env to the map,
1576	* and then searching the map for a player.
1577	*/
1578	if (!tmp) {
1579	for (pl=first_player; pl; pl=pl->next)
1580	if (pl->ob->container == op->env) break;
1581	if (pl) tmp=pl->ob;
1582	else tmp=NULL;
1583	}
1584
1585	if (i < op->nrof) {
1586	sub_weight (op->env, op->weight * i);
1587	op->nrof -= i;
1588	if (tmp) {
1589	esrv_send_item(tmp, op);
1590	}
1591	} else {
1592	remove_ob (op);
1593	op->nrof = 0;
1594	if (tmp) {
1595	esrv_del_item(tmp->contr, op->count);
1596	}
1597	}
1598	}
1599	else
1600	{
1601	object *above = op->above;
1602
1603	if (i < op->nrof) {
1604	op->nrof -= i;
1605	} else {
1606	remove_ob (op);
1607	op->nrof = 0;
1608	}
1609	/* Since we just removed op, op->above is null */
1610	for (tmp = above; tmp != NULL; tmp = tmp->above)
1611	if (tmp->type == PLAYER) {
1612	if (op->nrof)
1613	esrv_send_item(tmp, op);
1614	else
1615	esrv_del_item(tmp->contr, op->count);
1616	}
1617	}
1618
1619	if (op->nrof) {
1620	return op;	1603	return op;
1621	} else {	1604	}
1622	free_object (op);	1605
1623	return NULL;	1606	if (where->head_ () != where)
1624	}	1607	{
1625	}	1608	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1626		1609	where = where->head;
1627	/*
1628	* add_weight(object, weight) adds the specified weight to an object,
1629	* and also updates how much the environment(s) is/are carrying.
1630	*/
1631
1632	void add_weight (object *op, signed long weight) {
1633	while (op!=NULL) {
1634	if (op->type == CONTAINER) {
1635	weight=(signed long)(weight*(100-op->stats.Str)/100);
1636	}
1637	op->carrying+=weight;
1638	op=op->env;
1639	}	1610	}
1640	}
1641		1611
		1612	return where->insert (op);
		1613	}
		1614
1642	/*	1615	/*
1643	* insert_ob_in_ob(op,environment):	1616	* env->insert (op)
1644	* This function inserts the object op in the linked list	1617	* This function inserts the object op in the linked list
1645	* inside the object environment.	1618	* inside the object environment.
1646	*	1619	*
1647	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1648	* the inventory at the last position or next to other objects of the same
1649	* type.
1650	* Frank: Now sorted by type, archetype and magic!
1651	*
1652	* The function returns now pointer to inserted item, and return value can	1620	* The function returns now pointer to inserted item, and return value can
1653	* be != op, if items are merged. -Tero	1621	* be != op, if items are merged. -Tero
1654	*/	1622	*/
1655		1623	object *
1656	object *insert_ob_in_ob(object *op,object *where) {	1624	object::insert (object *op)
1657	object *tmp, *otmp;	1625	{
1658
1659	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1660	dump_object(op);
1661	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1662	return op;
1663	}
1664	if(where==NULL) {
1665	dump_object(op);
1666	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1667	return op;
1668	}
1669	if (where->head) {
1670	LOG(llevDebug,
1671	"Warning: Tried to insert object wrong part of multipart object.\n");
1672	where = where->head;
1673	}
1674	if (op->more) {	1626	if (op->more)
		1627	{
1675	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1628	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1676	&op->name, op->count);
1677	return op;	1629	return op;
1678	}	1630	}
1679	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1631
1680	CLEAR_FLAG(op, FLAG_REMOVED);	1632	op->remove ();
		1633
		1634	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1635
1681	if(op->nrof) {	1636	if (op->nrof)
1682	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1637	for (object *tmp = inv; tmp; tmp = tmp->below)
1683	if ( CAN_MERGE(tmp,op) ) {	1638	if (object::can_merge (tmp, op))
		1639	{
1684	/* return the original object and remove inserted object	1640	/* return the original object and remove inserted object
1685	(client needs the original object) */	1641	(client needs the original object) */
1686	tmp->nrof += op->nrof;	1642	tmp->nrof += op->nrof;
1687	/* Weight handling gets pretty funky. Since we are adding to	1643
1688	* tmp->nrof, we need to increase the weight.	1644	if (object *pl = tmp->visible_to ())
1689	*/	1645	esrv_update_item (UPD_NROF, pl, tmp);
1690	add_weight (where, op->weight*op->nrof);	1646
1691	SET_FLAG(op, FLAG_REMOVED);	1647	adjust_weight (this, op->total_weight ());
1692	free_object(op); /* free the inserted object */	1648
		1649	op->destroy (1);
1693	op = tmp;	1650	op = tmp;
1694	remove_ob (op); /* and fix old object's links */	1651	goto inserted;
1695	CLEAR_FLAG(op, FLAG_REMOVED);
1696	break;
1697	}	1652	}
1698		1653
1699	/* I assume combined objects have no inventory	1654	op->owner = 0; // it's his/hers now. period.
1700	* We add the weight - this object could have just been removed	1655	op->map = 0;
1701	* (if it was possible to merge). calling remove_ob will subtract	1656	op->x = 0;
1702	* the weight, so we need to add it in again, since we actually do	1657	op->y = 0;
1703	* the linking below
1704	*/
1705	add_weight (where, op->weight*op->nrof);
1706	} else
1707	add_weight (where, (op->weight+op->carrying));
1708		1658
1709	otmp=is_player_inv(where);
1710	if (otmp&&otmp->contr!=NULL) {
1711	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1712	fix_player(otmp);
1713	}
1714
1715	op->map=NULL;
1716	op->env=where;
1717	op->above=NULL;	1659	op->above = 0;
1718	op->below=NULL;	1660	op->below = inv;
1719	op->x=0,op->y=0;	1661	op->env = this;
1720		1662
		1663	if (inv)
		1664	inv->above = op;
		1665
		1666	inv = op;
		1667
		1668	op->flag [FLAG_REMOVED] = 0;
		1669
		1670	if (object *pl = op->visible_to ())
		1671	esrv_send_item (pl, op);
		1672
		1673	adjust_weight (this, op->total_weight ());
		1674
		1675	inserted:
1721	/* reset the light list and los of the players on the map */	1676	/* reset the light list and los of the players on the map */
1722	if((op->glow_radius!=0)&&where->map)	1677	if (op->glow_radius && map && map->darkness)
1723	{	1678	update_all_los (map, x, y);
1724	#ifdef DEBUG_LIGHTS
1725	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",
1726	op->name);
1727	#endif /* DEBUG_LIGHTS */
1728	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1729	}
1730		1679
1731	/* Client has no idea of ordering so lets not bother ordering it here.	1680	// if this is a player's inventory, update stats
1732	* It sure simplifies this function...	1681	if (type == PLAYER && !flag [FLAG_NO_FIX_PLAYER])
1733	*/	1682	update_stats ();
1734	if (where->inv==NULL)	1683
1735	where->inv=op;	1684	INVOKE_OBJECT (INSERT, this);
1736	else {	1685
1737	op->below = where->inv;
1738	op->below->above = op;
1739	where->inv = op;
1740	}
1741	return op;	1686	return op;
1742	}	1687	}
1743		1688
1744	/*	1689	/*
1745	* Checks if any objects has a move_type that matches objects	1690	* Checks if any objects has a move_type that matches objects
…		…
1759	*	1704	*
1760	* MSW 2001-07-08: Check all objects on space, not just those below	1705	* MSW 2001-07-08: Check all objects on space, not just those below
1761	* object being inserted. insert_ob_in_map may not put new objects	1706	* object being inserted. insert_ob_in_map may not put new objects
1762	* on top.	1707	* on top.
1763	*/	1708	*/
1764		1709	int
1765	int check_move_on (object *op, object *originator)	1710	check_move_on (object *op, object *originator)
1766	{	1711	{
1767	object *tmp;	1712	object *tmp;
1768	tag_t tag;
1769	mapstruct *m=op->map;	1713	maptile *m = op->map;
1770	int x=op->x, y=op->y;	1714	int x = op->x, y = op->y;
		1715
1771	MoveType move_on, move_slow, move_block;	1716	MoveType move_on, move_slow, move_block;
1772		1717
1773	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1718	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1774	return 0;	1719	return 0;
1775		1720
1776	tag = op->count;
1777
1778	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1721	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1779	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1722	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1780	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1723	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1781		1724
1782	/* if nothing on this space will slow op down or be applied,	1725	/* if nothing on this space will slow op down or be applied,
1783	* no need to do checking below. have to make sure move_type	1726	* no need to do checking below. have to make sure move_type
1784	* is set, as lots of objects don't have it set - we treat that	1727	* is set, as lots of objects don't have it set - we treat that
1785	* as walking.	1728	* as walking.
1786	*/	1729	*/
1787	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1730	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1788	return 0;	1731	return 0;
1789		1732
1790	/* This is basically inverse logic of that below - basically,	1733	/* This is basically inverse logic of that below - basically,
1791	* if the object can avoid the move on or slow move, they do so,	1734	* if the object can avoid the move on or slow move, they do so,
1792	* but can't do it if the alternate movement they are using is	1735	* but can't do it if the alternate movement they are using is
1793	* blocked. Logic on this seems confusing, but does seem correct.	1736	* blocked. Logic on this seems confusing, but does seem correct.
1794	*/	1737	*/
1795	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1738	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1796	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1739	return 0;
1797		1740
1798	/* The objects have to be checked from top to bottom.	1741	/* The objects have to be checked from top to bottom.
1799	* Hence, we first go to the top:	1742	* Hence, we first go to the top:
1800	*/	1743	*/
1801		1744
1802	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1745	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1803	tmp->above!=NULL; tmp=tmp->above) {	1746	{
1804	/* Trim the search when we find the first other spell effect	1747	/* Trim the search when we find the first other spell effect
1805	* this helps performance so that if a space has 50 spell objects,	1748	* this helps performance so that if a space has 50 spell objects,
1806	* we don't need to check all of them.	1749	* we don't need to check all of them.
1807	*/	1750	*/
1808	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1751	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1752	break;
		1753	}
		1754
		1755	for (; tmp; tmp = tmp->below)
1809	}	1756	{
1810	for(;tmp!=NULL; tmp=tmp->below) {	1757	if (tmp == op)
1811	if (tmp == op) continue; /* Can't apply yourself */	1758	continue; /* Can't apply yourself */
1812		1759
1813	/* Check to see if one of the movement types should be slowed down.	1760	/* Check to see if one of the movement types should be slowed down.
1814	* Second check makes sure that the movement types not being slowed	1761	* Second check makes sure that the movement types not being slowed
1815	* (~slow_move) is not blocked on this space - just because the	1762	* (~slow_move) is not blocked on this space - just because the
1816	* space doesn't slow down swimming (for example), if you can't actually	1763	* space doesn't slow down swimming (for example), if you can't actually
1817	* swim on that space, can't use it to avoid the penalty.	1764	* swim on that space, can't use it to avoid the penalty.
1818	*/	1765	*/
1819	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1766	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1767	{
1820	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1768	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1821	((op->move_type & tmp->move_slow) &&
1822	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1769	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1770	{
1823		1771
1824	float diff;	1772	float
1825
1826	diff = tmp->move_slow_penalty*FABS(op->speed);	1773	diff = tmp->move_slow_penalty * fabs (op->speed);
		1774
1827	if (op->type == PLAYER) {	1775	if (op->type == PLAYER)
1828	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1776	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1829	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1777	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1830	diff /= 4.0;	1778	diff /= 4.0;
1831	}	1779
1832	}
1833	op->speed_left -= diff;	1780	op->speed_left -= diff;
1834	}	1781	}
1835	}	1782	}
1836		1783
1837	/* Basically same logic as above, except now for actual apply. */	1784	/* Basically same logic as above, except now for actual apply. */
1838	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1785	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1839	((op->move_type & tmp->move_on) &&
1840	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1786	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1841		1787	{
1842	move_apply(tmp, op, originator);	1788	move_apply (tmp, op, originator);
		1789
1843	if (was_destroyed (op, tag))	1790	if (op->destroyed ())
1844	return 1;	1791	return 1;
1845		1792
1846	/* what the person/creature stepped onto has moved the object	1793	/* what the person/creature stepped onto has moved the object
1847	* someplace new. Don't process any further - if we did,	1794	* someplace new. Don't process any further - if we did,
1848	* have a feeling strange problems would result.	1795	* have a feeling strange problems would result.
1849	*/	1796	*/
1850	if (op->map != m || op->x != x || op->y != y) return 0;	1797	if (op->map != m || op->x != x || op->y != y)
		1798	return 0;
1851	}	1799	}
1852	}	1800	}
		1801
1853	return 0;	1802	return 0;
1854	}	1803	}
1855		1804
1856	/*	1805	/*
1857	* present_arch(arch, map, x, y) searches for any objects with	1806	* present_arch(arch, map, x, y) searches for any objects with
1858	* a matching archetype at the given map and coordinates.	1807	* a matching archetype at the given map and coordinates.
1859	* The first matching object is returned, or NULL if none.	1808	* The first matching object is returned, or NULL if none.
1860	*/	1809	*/
1861		1810	object *
1862	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1811	present_arch (const archetype *at, maptile *m, int x, int y)
1863	object *tmp;	1812	{
1864	if(m==NULL || out_of_map(m,x,y)) {	1813	if (!m || out_of_map (m, x, y))
		1814	{
1865	LOG(llevError,"Present_arch called outside map.\n");	1815	LOG (llevError, "Present_arch called outside map.\n");
1866	return NULL;	1816	return NULL;
1867	}	1817	}
1868	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1818
		1819	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1869	if(tmp->arch == at)	1820	if (tmp->arch == at)
1870	return tmp;	1821	return tmp;
		1822
1871	return NULL;	1823	return NULL;
1872	}	1824	}
1873		1825
1874	/*	1826	/*
1875	* present(type, map, x, y) searches for any objects with	1827	* present(type, map, x, y) searches for any objects with
1876	* a matching type variable at the given map and coordinates.	1828	* a matching type variable at the given map and coordinates.
1877	* The first matching object is returned, or NULL if none.	1829	* The first matching object is returned, or NULL if none.
1878	*/	1830	*/
1879		1831	object *
1880	object *present(unsigned char type,mapstruct *m, int x,int y) {	1832	present (unsigned char type, maptile *m, int x, int y)
1881	object *tmp;	1833	{
1882	if(out_of_map(m,x,y)) {	1834	if (out_of_map (m, x, y))
		1835	{
1883	LOG(llevError,"Present called outside map.\n");	1836	LOG (llevError, "Present called outside map.\n");
1884	return NULL;	1837	return NULL;
1885	}	1838	}
1886	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1839
		1840	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1887	if(tmp->type==type)	1841	if (tmp->type == type)
1888	return tmp;	1842	return tmp;
		1843
1889	return NULL;	1844	return NULL;
1890	}	1845	}
1891		1846
1892	/*	1847	/*
1893	* present_in_ob(type, object) searches for any objects with	1848	* present_in_ob(type, object) searches for any objects with
1894	* a matching type variable in the inventory of the given object.	1849	* a matching type variable in the inventory of the given object.
1895	* The first matching object is returned, or NULL if none.	1850	* The first matching object is returned, or NULL if none.
1896	*/	1851	*/
1897		1852	object *
1898	object *present_in_ob(unsigned char type, const object *op) {	1853	present_in_ob (unsigned char type, const object *op)
1899	object *tmp;	1854	{
1900	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1855	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1901	if(tmp->type==type)	1856	if (tmp->type == type)
1902	return tmp;	1857	return tmp;
		1858
1903	return NULL;	1859	return NULL;
1904	}	1860	}
1905		1861
1906	/*	1862	/*
1907	* present_in_ob (type, str, object) searches for any objects with	1863	* present_in_ob (type, str, object) searches for any objects with
…		…
1915	* str is the string to match against. Note that we match against	1871	* str is the string to match against. Note that we match against
1916	* the object name, not the archetype name. this is so that the	1872	* the object name, not the archetype name. this is so that the
1917	* spell code can use one object type (force), but change it's name	1873	* spell code can use one object type (force), but change it's name
1918	* to be unique.	1874	* to be unique.
1919	*/	1875	*/
1920		1876	object *
1921	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1877	present_in_ob_by_name (int type, const char *str, const object *op)
1922	object *tmp;	1878	{
1923
1924	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1879	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1925	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1880	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1926	return tmp;	1881	return tmp;
1927	}	1882
1928	return NULL;	1883	return 0;
1929	}	1884	}
1930		1885
1931	/*	1886	/*
1932	* present_arch_in_ob(archetype, object) searches for any objects with	1887	* present_arch_in_ob(archetype, object) searches for any objects with
1933	* a matching archetype in the inventory of the given object.	1888	* a matching archetype in the inventory of the given object.
1934	* The first matching object is returned, or NULL if none.	1889	* The first matching object is returned, or NULL if none.
1935	*/	1890	*/
1936		1891	object *
1937	object *present_arch_in_ob(const archetype *at, const object *op) {	1892	present_arch_in_ob (const archetype *at, const object *op)
1938	object *tmp;	1893	{
1939	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1894	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1940	if( tmp->arch == at)	1895	if (tmp->arch == at)
1941	return tmp;	1896	return tmp;
		1897
1942	return NULL;	1898	return NULL;
1943	}	1899	}
1944		1900
1945	/*	1901	/*
1946	* activate recursively a flag on an object inventory	1902	* activate recursively a flag on an object inventory
1947	*/	1903	*/
		1904	void
1948	void flag_inv(object*op, int flag){	1905	flag_inv (object *op, int flag)
1949	object *tmp;	1906	{
1950	if(op->inv)
1951	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1907	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1908	{
1952	SET_FLAG(tmp, flag);	1909	SET_FLAG (tmp, flag);
1953	flag_inv(tmp,flag);	1910	flag_inv (tmp, flag);
1954	}	1911	}
		1912	}
		1913
1955	}/*	1914	/*
1956	* desactivate recursively a flag on an object inventory	1915	* deactivate recursively a flag on an object inventory
1957	*/	1916	*/
		1917	void
1958	void unflag_inv(object*op, int flag){	1918	unflag_inv (object *op, int flag)
1959	object *tmp;	1919	{
1960	if(op->inv)
1961	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1920	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1921	{
1962	CLEAR_FLAG(tmp, flag);	1922	CLEAR_FLAG (tmp, flag);
1963	unflag_inv(tmp,flag);	1923	unflag_inv (tmp, flag);
1964	}	1924	}
1965	}
1966
1967	/*
1968	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1969	* all it's inventory (recursively).
1970	* If checksums are used, a player will get set_cheat called for
1971	* him/her-self and all object carried by a call to this function.
1972	*/
1973
1974	void set_cheat(object *op) {
1975	SET_FLAG(op, FLAG_WAS_WIZ);
1976	flag_inv(op, FLAG_WAS_WIZ);
1977	}	1925	}
1978		1926
1979	/*	1927	/*
1980	* find_free_spot(object, map, x, y, start, stop) will search for	1928	* find_free_spot(object, map, x, y, start, stop) will search for
1981	* a spot at the given map and coordinates which will be able to contain	1929	* a spot at the given map and coordinates which will be able to contain
…		…
1983	* to search (see the freearr_x/y[] definition).	1931	* to search (see the freearr_x/y[] definition).
1984	* It returns a random choice among the alternatives found.	1932	* It returns a random choice among the alternatives found.
1985	* start and stop are where to start relative to the free_arr array (1,9	1933	* start and stop are where to start relative to the free_arr array (1,9
1986	* does all 4 immediate directions). This returns the index into the	1934	* does all 4 immediate directions). This returns the index into the
1987	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1935	* array of the free spot, -1 if no spot available (dir 0 = x,y)
1988	* Note - this only checks to see if there is space for the head of the
1989	* object - if it is a multispace object, this should be called for all
1990	* pieces.
1991	* Note2: This function does correctly handle tiled maps, but does not	1936	* Note: This function does correctly handle tiled maps, but does not
1992	* inform the caller. However, insert_ob_in_map will update as	1937	* inform the caller. However, insert_ob_in_map will update as
1993	* necessary, so the caller shouldn't need to do any special work.	1938	* necessary, so the caller shouldn't need to do any special work.
1994	* Note - updated to take an object instead of archetype - this is necessary	1939	* Note - updated to take an object instead of archetype - this is necessary
1995	* because arch_blocked (now ob_blocked) needs to know the movement type	1940	* because arch_blocked (now ob_blocked) needs to know the movement type
1996	* to know if the space in question will block the object. We can't use	1941	* to know if the space in question will block the object. We can't use
1997	* the archetype because that isn't correct if the monster has been	1942	* the archetype because that isn't correct if the monster has been
1998	* customized, changed states, etc.	1943	* customized, changed states, etc.
1999	*/	1944	*/
2000		1945	int
2001	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1946	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1947	{
		1948	int altern[SIZEOFFREE];
2002	int i,index=0, flag;	1949	int index = 0, flag;
2003	static int altern[SIZEOFFREE];
2004		1950
2005	for(i=start;i<stop;i++) {	1951	for (int i = start; i < stop; i++)
2006	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1952	{
2007	if(!flag)	1953	mapxy pos (m, x, y); pos.move (i);
		1954
		1955	if (!pos.normalise ())
		1956	continue;
		1957
		1958	mapspace &ms = *pos;
		1959
		1960	if (ms.flags () & P_IS_ALIVE)
		1961	continue;
		1962
		1963	/* However, often
		1964	* ob doesn't have any move type (when used to place exits)
		1965	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		1966	*/
		1967	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		1968	{
2008	altern[index++]=i;	1969	altern [index++] = i;
		1970	continue;
		1971	}
2009		1972
2010	/* Basically, if we find a wall on a space, we cut down the search size.	1973	/* Basically, if we find a wall on a space, we cut down the search size.
2011	* In this way, we won't return spaces that are on another side of a wall.	1974	* In this way, we won't return spaces that are on another side of a wall.
2012	* This mostly work, but it cuts down the search size in all directions -	1975	* This mostly work, but it cuts down the search size in all directions -
2013	* if the space being examined only has a wall to the north and empty	1976	* if the space being examined only has a wall to the north and empty
2014	* spaces in all the other directions, this will reduce the search space	1977	* spaces in all the other directions, this will reduce the search space
2015	* to only the spaces immediately surrounding the target area, and	1978	* to only the spaces immediately surrounding the target area, and
2016	* won't look 2 spaces south of the target space.	1979	* won't look 2 spaces south of the target space.
2017	*/	1980	*/
2018	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1981	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		1982	{
2019	stop=maxfree[i];	1983	stop = maxfree[i];
2020	}	1984	continue;
2021	if(!index) return -1;	1985	}
2022	return altern[RANDOM()%index];
2023	}
2024		1986
		1987	/* Note it is intentional that we check ob - the movement type of the
		1988	* head of the object should correspond for the entire object.
		1989	*/
		1990	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		1991	continue;
		1992
		1993	if (ob->blocked (m, pos.x, pos.y))
		1994	continue;
		1995
		1996	altern [index++] = i;
		1997	}
		1998
		1999	if (!index)
		2000	return -1;
		2001
		2002	return altern [rndm (index)];
		2003	}
		2004
2025	/*	2005	/*
2026	* find_first_free_spot(archetype, mapstruct, x, y) works like	2006	* find_first_free_spot(archetype, maptile, x, y) works like
2027	* find_free_spot(), but it will search max number of squares.	2007	* find_free_spot(), but it will search max number of squares.
2028	* But it will return the first available spot, not a random choice.	2008	* But it will return the first available spot, not a random choice.
2029	* Changed 0.93.2: Have it return -1 if there is no free spot available.	2009	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2030	*/	2010	*/
2031		2011	int
2032	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2012	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2033	int i;	2013	{
2034	for(i=0;i<SIZEOFFREE;i++) {	2014	for (int i = 0; i < SIZEOFFREE; i++)
2035	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2015	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2036	return i;	2016	return i;
2037	}	2017
2038	return -1;	2018	return -1;
2039	}	2019	}
2040		2020
2041	/*	2021	/*
2042	* The function permute(arr, begin, end) randomly reorders the array	2022	* The function permute(arr, begin, end) randomly reorders the array
2043	* arr[begin..end-1].	2023	* arr[begin..end-1].
		2024	* now uses a fisher-yates shuffle, old permute was broken
2044	*/	2025	*/
		2026	static void
2045	static void permute(int *arr, int begin, int end)	2027	permute (int *arr, int begin, int end)
2046	{	2028	{
2047	int i, j, tmp, len;	2029	arr += begin;
		2030	end -= begin;
2048		2031
2049	len = end-begin;	2032	while (--end)
2050	for(i = begin; i < end; i++)	2033	swap (arr [end], arr [rndm (end + 1)]);
2051	{
2052	j = begin+RANDOM()%len;
2053
2054	tmp = arr[i];
2055	arr[i] = arr[j];
2056	arr[j] = tmp;
2057	}
2058	}	2034	}
2059		2035
2060	/* new function to make monster searching more efficient, and effective!	2036	/* new function to make monster searching more efficient, and effective!
2061	* This basically returns a randomized array (in the passed pointer) of	2037	* This basically returns a randomized array (in the passed pointer) of
2062	* the spaces to find monsters. In this way, it won't always look for	2038	* the spaces to find monsters. In this way, it won't always look for
2063	* monsters to the north first. However, the size of the array passed	2039	* monsters to the north first. However, the size of the array passed
2064	* covers all the spaces, so within that size, all the spaces within	2040	* covers all the spaces, so within that size, all the spaces within
2065	* the 3x3 area will be searched, just not in a predictable order.	2041	* the 3x3 area will be searched, just not in a predictable order.
2066	*/	2042	*/
		2043	void
2067	void get_search_arr(int *search_arr)	2044	get_search_arr (int *search_arr)
2068	{	2045	{
2069	int i;	2046	int i;
2070		2047
2071	for(i = 0; i < SIZEOFFREE; i++)	2048	for (i = 0; i < SIZEOFFREE; i++)
2072	{
2073	search_arr[i] = i;	2049	search_arr[i] = i;
2074	}
2075		2050
2076	permute(search_arr, 1, SIZEOFFREE1+1);	2051	permute (search_arr, 1, SIZEOFFREE1 + 1);
2077	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2052	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2078	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2053	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2079	}	2054	}
2080		2055
2081	/*	2056	/*
2082	* find_dir(map, x, y, exclude) will search some close squares in the	2057	* find_dir(map, x, y, exclude) will search some close squares in the
2083	* given map at the given coordinates for live objects.	2058	* given map at the given coordinates for live objects.
…		…
2088	* Perhaps incorrectly, but I'm making the assumption that exclude	2063	* Perhaps incorrectly, but I'm making the assumption that exclude
2089	* is actually want is going to try and move there. We need this info	2064	* is actually want is going to try and move there. We need this info
2090	* because we have to know what movement the thing looking to move	2065	* because we have to know what movement the thing looking to move
2091	* there is capable of.	2066	* there is capable of.
2092	*/	2067	*/
2093		2068	int
2094	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2069	find_dir (maptile *m, int x, int y, object *exclude)
		2070	{
2095	int i,max=SIZEOFFREE, mflags;	2071	int i, max = SIZEOFFREE, mflags;
		2072
2096	sint16 nx, ny;	2073	sint16 nx, ny;
2097	object *tmp;	2074	object *tmp;
2098	mapstruct *mp;	2075	maptile *mp;
		2076
2099	MoveType blocked, move_type;	2077	MoveType blocked, move_type;
2100		2078
2101	if (exclude && exclude->head) {	2079	if (exclude && exclude->head_ () != exclude)
		2080	{
2102	exclude = exclude->head;	2081	exclude = exclude->head;
2103	move_type = exclude->move_type;	2082	move_type = exclude->move_type;
2104	} else {	2083	}
		2084	else
		2085	{
2105	/* If we don't have anything, presume it can use all movement types. */	2086	/* If we don't have anything, presume it can use all movement types. */
2106	move_type=MOVE_ALL;	2087	move_type = MOVE_ALL;
		2088	}
		2089
		2090	for (i = 1; i < max; i++)
2107	}	2091	{
2108
2109	for(i=1;i<max;i++) {
2110	mp = m;	2092	mp = m;
2111	nx = x + freearr_x[i];	2093	nx = x + freearr_x[i];
2112	ny = y + freearr_y[i];	2094	ny = y + freearr_y[i];
2113		2095
2114	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2096	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2097
2115	if (mflags & P_OUT_OF_MAP) {	2098	if (mflags & P_OUT_OF_MAP)
		2099	max = maxfree[i];
		2100	else
		2101	{
		2102	mapspace &ms = mp->at (nx, ny);
		2103
		2104	blocked = ms.move_block;
		2105
		2106	if ((move_type & blocked) == move_type)
2116	max = maxfree[i];	2107	max = maxfree[i];
2117	} else {
2118	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2119
2120	if ((move_type & blocked) == move_type) {
2121	max=maxfree[i];
2122	} else if (mflags & P_IS_ALIVE) {	2108	else if (mflags & P_IS_ALIVE)
2123	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2109	{
		2110	for (tmp = ms.bot; tmp; tmp = tmp->above)
2124	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2111	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2125	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2112	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2126	break;	2113	break;
2127	}	2114
2128	}
2129	if(tmp) {	2115	if (tmp)
2130	return freedir[i];	2116	return freedir[i];
2131	}
2132	}	2117	}
2133	}	2118	}
2134	}	2119	}
		2120
2135	return 0;	2121	return 0;
2136	}	2122	}
2137		2123
2138	/*	2124	/*
2139	* distance(object 1, object 2) will return the square of the	2125	* distance(object 1, object 2) will return the square of the
2140	* distance between the two given objects.	2126	* distance between the two given objects.
2141	*/	2127	*/
2142		2128	int
2143	int distance(const object *ob1, const object *ob2) {	2129	distance (const object *ob1, const object *ob2)
2144	int i;	2130	{
2145	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2131	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2146	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2147	return i;
2148	}	2132	}
2149		2133
2150	/*	2134	/*
2151	* find_dir_2(delta-x,delta-y) will return a direction in which	2135	* find_dir_2(delta-x,delta-y) will return a direction in which
2152	* an object which has subtracted the x and y coordinates of another	2136	* an object which has subtracted the x and y coordinates of another
2153	* object, needs to travel toward it.	2137	* object, needs to travel toward it.
2154	*/	2138	*/
2155		2139	int
2156	int find_dir_2(int x, int y) {	2140	find_dir_2 (int x, int y)
		2141	{
2157	int q;	2142	int q;
2158		2143
2159	if(y)	2144	if (y)
2160	q=x*100/y;	2145	q = x * 100 / y;
2161	else if (x)	2146	else if (x)
2162	q= -300*x;	2147	q = -300 * x;
2163	else	2148	else
2164	return 0;	2149	return 0;
2165		2150
2166	if(y>0) {	2151	if (y > 0)
		2152	{
2167	if(q < -242)	2153	if (q < -242)
2168	return 3 ;	2154	return 3;
2169	if (q < -41)	2155	if (q < -41)
2170	return 2 ;	2156	return 2;
2171	if (q < 41)	2157	if (q < 41)
2172	return 1 ;	2158	return 1;
2173	if (q < 242)	2159	if (q < 242)
2174	return 8 ;	2160	return 8;
2175	return 7 ;	2161	return 7;
2176	}	2162	}
2177		2163
2178	if (q < -242)	2164	if (q < -242)
2179	return 7 ;	2165	return 7;
2180	if (q < -41)	2166	if (q < -41)
2181	return 6 ;	2167	return 6;
2182	if (q < 41)	2168	if (q < 41)
2183	return 5 ;	2169	return 5;
2184	if (q < 242)	2170	if (q < 242)
2185	return 4 ;	2171	return 4;
2186		2172
2187	return 3 ;	2173	return 3;
2188	}
2189
2190	/*
2191	* absdir(int): Returns a number between 1 and 8, which represent
2192	* the "absolute" direction of a number (it actually takes care of
2193	* "overflow" in previous calculations of a direction).
2194	*/
2195
2196	int absdir(int d) {
2197	while(d<1) d+=8;
2198	while(d>8) d-=8;
2199	return d;
2200	}	2174	}
2201		2175
2202	/*	2176	/*
2203	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2177	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2204	* between two directions (which are expected to be absolute (see absdir())	2178	* between two directions (which are expected to be absolute (see absdir())
2205	*/	2179	*/
2206		2180	int
2207	int dirdiff(int dir1, int dir2) {	2181	dirdiff (int dir1, int dir2)
		2182	{
2208	int d;	2183	int d;
		2184
2209	d = abs(dir1 - dir2);	2185	d = abs (dir1 - dir2);
2210	if(d>4)	2186	if (d > 4)
2211	d = 8 - d;	2187	d = 8 - d;
		2188
2212	return d;	2189	return d;
2213	}	2190	}
2214		2191
2215	/* peterm:	2192	/* peterm:
2216	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2193	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2219	* This basically means that if direction is 15, then it could either go	2196	* This basically means that if direction is 15, then it could either go
2220	* direction 4, 14, or 16 to get back to where we are.	2197	* direction 4, 14, or 16 to get back to where we are.
2221	* Moved from spell_util.c to object.c with the other related direction	2198	* Moved from spell_util.c to object.c with the other related direction
2222	* functions.	2199	* functions.
2223	*/	2200	*/
2224
2225	int reduction_dir[SIZEOFFREE][3] = {	2201	int reduction_dir[SIZEOFFREE][3] = {
2226	{0,0,0}, /* 0 */	2202	{0, 0, 0}, /* 0 */
2227	{0,0,0}, /* 1 */	2203	{0, 0, 0}, /* 1 */
2228	{0,0,0}, /* 2 */	2204	{0, 0, 0}, /* 2 */
2229	{0,0,0}, /* 3 */	2205	{0, 0, 0}, /* 3 */
2230	{0,0,0}, /* 4 */	2206	{0, 0, 0}, /* 4 */
2231	{0,0,0}, /* 5 */	2207	{0, 0, 0}, /* 5 */
2232	{0,0,0}, /* 6 */	2208	{0, 0, 0}, /* 6 */
2233	{0,0,0}, /* 7 */	2209	{0, 0, 0}, /* 7 */
2234	{0,0,0}, /* 8 */	2210	{0, 0, 0}, /* 8 */
2235	{8,1,2}, /* 9 */	2211	{8, 1, 2}, /* 9 */
2236	{1,2,-1}, /* 10 */	2212	{1, 2, -1}, /* 10 */
2237	{2,10,12}, /* 11 */	2213	{2, 10, 12}, /* 11 */
2238	{2,3,-1}, /* 12 */	2214	{2, 3, -1}, /* 12 */
2239	{2,3,4}, /* 13 */	2215	{2, 3, 4}, /* 13 */
2240	{3,4,-1}, /* 14 */	2216	{3, 4, -1}, /* 14 */
2241	{4,14,16}, /* 15 */	2217	{4, 14, 16}, /* 15 */
2242	{5,4,-1}, /* 16 */	2218	{5, 4, -1}, /* 16 */
2243	{4,5,6}, /* 17 */	2219	{4, 5, 6}, /* 17 */
2244	{6,5,-1}, /* 18 */	2220	{6, 5, -1}, /* 18 */
2245	{6,20,18}, /* 19 */	2221	{6, 20, 18}, /* 19 */
2246	{7,6,-1}, /* 20 */	2222	{7, 6, -1}, /* 20 */
2247	{6,7,8}, /* 21 */	2223	{6, 7, 8}, /* 21 */
2248	{7,8,-1}, /* 22 */	2224	{7, 8, -1}, /* 22 */
2249	{8,22,24}, /* 23 */	2225	{8, 22, 24}, /* 23 */
2250	{8,1,-1}, /* 24 */	2226	{8, 1, -1}, /* 24 */
2251	{24,9,10}, /* 25 */	2227	{24, 9, 10}, /* 25 */
2252	{9,10,-1}, /* 26 */	2228	{9, 10, -1}, /* 26 */
2253	{10,11,-1}, /* 27 */	2229	{10, 11, -1}, /* 27 */
2254	{27,11,29}, /* 28 */	2230	{27, 11, 29}, /* 28 */
2255	{11,12,-1}, /* 29 */	2231	{11, 12, -1}, /* 29 */
2256	{12,13,-1}, /* 30 */	2232	{12, 13, -1}, /* 30 */
2257	{12,13,14}, /* 31 */	2233	{12, 13, 14}, /* 31 */
2258	{13,14,-1}, /* 32 */	2234	{13, 14, -1}, /* 32 */
2259	{14,15,-1}, /* 33 */	2235	{14, 15, -1}, /* 33 */
2260	{33,15,35}, /* 34 */	2236	{33, 15, 35}, /* 34 */
2261	{16,15,-1}, /* 35 */	2237	{16, 15, -1}, /* 35 */
2262	{17,16,-1}, /* 36 */	2238	{17, 16, -1}, /* 36 */
2263	{18,17,16}, /* 37 */	2239	{18, 17, 16}, /* 37 */
2264	{18,17,-1}, /* 38 */	2240	{18, 17, -1}, /* 38 */
2265	{18,19,-1}, /* 39 */	2241	{18, 19, -1}, /* 39 */
2266	{41,19,39}, /* 40 */	2242	{41, 19, 39}, /* 40 */
2267	{19,20,-1}, /* 41 */	2243	{19, 20, -1}, /* 41 */
2268	{20,21,-1}, /* 42 */	2244	{20, 21, -1}, /* 42 */
2269	{20,21,22}, /* 43 */	2245	{20, 21, 22}, /* 43 */
2270	{21,22,-1}, /* 44 */	2246	{21, 22, -1}, /* 44 */
2271	{23,22,-1}, /* 45 */	2247	{23, 22, -1}, /* 45 */
2272	{45,47,23}, /* 46 */	2248	{45, 47, 23}, /* 46 */
2273	{23,24,-1}, /* 47 */	2249	{23, 24, -1}, /* 47 */
2274	{24,9,-1}}; /* 48 */	2250	{24, 9, -1}
		2251	}; /* 48 */
2275		2252
2276	/* Recursive routine to step back and see if we can	2253	/* Recursive routine to step back and see if we can
2277	* find a path to that monster that we found. If not,	2254	* find a path to that monster that we found. If not,
2278	* we don't bother going toward it. Returns 1 if we	2255	* we don't bother going toward it. Returns 1 if we
2279	* can see a direct way to get it	2256	* can see a direct way to get it
2280	* Modified to be map tile aware -.MSW	2257	* Modified to be map tile aware -.MSW
2281	*/	2258	*/
2282		2259	int
2283
2284	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2260	can_see_monsterP (maptile *m, int x, int y, int dir)
		2261	{
2285	sint16 dx, dy;	2262	sint16 dx, dy;
2286	int mflags;	2263	int mflags;
2287		2264
		2265	if (dir < 0)
2288	if(dir<0) return 0; /* exit condition: invalid direction */	2266	return 0; /* exit condition: invalid direction */
2289		2267
2290	dx = x + freearr_x[dir];	2268	dx = x + freearr_x[dir];
2291	dy = y + freearr_y[dir];	2269	dy = y + freearr_y[dir];
2292		2270
2293	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2271	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2294		2272
2295	/* This functional arguably was incorrect before - it was	2273	/* This functional arguably was incorrect before - it was
2296	* checking for P_WALL - that was basically seeing if	2274	* checking for P_WALL - that was basically seeing if
2297	* we could move to the monster - this is being more	2275	* we could move to the monster - this is being more
2298	* literal on if we can see it. To know if we can actually	2276	* literal on if we can see it. To know if we can actually
2299	* move to the monster, we'd need the monster passed in or	2277	* move to the monster, we'd need the monster passed in or
2300	* at least its move type.	2278	* at least its move type.
2301	*/	2279	*/
2302	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2280	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2281	return 0;
2303		2282
2304	/* yes, can see. */	2283	/* yes, can see. */
2305	if(dir < 9) return 1;	2284	if (dir < 9)
		2285	return 1;
		2286
2306	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2287	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2307	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2288	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2308	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2289	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2309	}	2290	}
2310		2291
2311
2312
2313	/*	2292	/*
2314	* can_pick(picker, item): finds out if an object is possible to be	2293	* can_pick(picker, item): finds out if an object is possible to be
2315	* picked up by the picker. Returnes 1 if it can be	2294	* picked up by the picker. Returnes 1 if it can be
2316	* picked up, otherwise 0.	2295	* picked up, otherwise 0.
2317	*	2296	*
2318	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2297	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2319	* core dumps if they do.	2298	* core dumps if they do.
2320	*	2299	*
2321	* Add a check so we can't pick up invisible objects (0.93.8)	2300	* Add a check so we can't pick up invisible objects (0.93.8)
2322	*/	2301	*/
2323		2302	int
2324	int can_pick(const object *who, const object *item) {	2303	can_pick (const object *who, const object *item)
		2304	{
2325	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2305	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2326	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2306	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2327	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2307	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2328	(who->type==PLAYER||item->weight<who->weight/3));
2329	}	2308	}
2330
2331		2309
2332	/*	2310	/*
2333	* create clone from object to another	2311	* create clone from object to another
2334	*/	2312	*/
		2313	object *
2335	object *object_create_clone (object *asrc) {	2314	object_create_clone (object *asrc)
		2315	{
2336	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2316	object *dst = 0, *tmp, *src, *prev, *item;
2337		2317
2338	if(!asrc) return NULL;	2318	if (!asrc)
2339	src = asrc;	2319	return 0;
2340	if(src->head)	2320
2341	src = src->head;	2321	src = asrc->head_ ();
2342		2322
2343	prev = NULL;	2323	prev = 0;
2344	for(part = src; part; part = part->more) {	2324	for (object *part = src; part; part = part->more)
2345	tmp = get_object();	2325	{
2346	copy_object(part,tmp);	2326	tmp = part->clone ();
2347	tmp->x -= src->x;	2327	tmp->x -= src->x;
2348	tmp->y -= src->y;	2328	tmp->y -= src->y;
		2329
2349	if(!part->head) {	2330	if (!part->head)
		2331	{
2350	dst = tmp;	2332	dst = tmp;
2351	tmp->head = NULL;
2352	} else {
2353	tmp->head = dst;	2333	tmp->head = 0;
2354	}	2334	}
		2335	else
		2336	tmp->head = dst;
		2337
2355	tmp->more = NULL;	2338	tmp->more = 0;
		2339
2356	if(prev)	2340	if (prev)
2357	prev->more = tmp;	2341	prev->more = tmp;
		2342
2358	prev = tmp;	2343	prev = tmp;
2359	}	2344	}
2360	/*** copy inventory ***/	2345
2361	for(item = src->inv; item; item = item->below) {	2346	for (item = src->inv; item; item = item->below)
2362	(void) insert_ob_in_ob(object_create_clone(item),dst);	2347	insert_ob_in_ob (object_create_clone (item), dst);
2363	}
2364		2348
2365	return dst;	2349	return dst;
2366	}
2367
2368	/* return true if the object was destroyed, 0 otherwise */
2369	int was_destroyed (const object *op, tag_t old_tag)
2370	{
2371	/* checking for FLAG_FREED isn't necessary, but makes this function more
2372	* robust */
2373	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2374	}
2375
2376	/* GROS - Creates an object using a string representing its content. */
2377	/* Basically, we save the content of the string to a temp file, then call */
2378	/* load_object on it. I admit it is a highly inefficient way to make things, */
2379	/* but it was simple to make and allows reusing the load_object function. */
2380	/* Remember not to use load_object_str in a time-critical situation. */
2381	/* Also remember that multiparts objects are not supported for now. */
2382
2383	object* load_object_str(const char *obstr)
2384	{
2385	object *op;
2386	char filename[MAX_BUF];
2387	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2388
2389	FILE *tempfile=fopen(filename,"w");
2390	if (tempfile == NULL)
2391	{
2392	LOG(llevError,"Error - Unable to access load object temp file\n");
2393	return NULL;
2394	};
2395	fprintf(tempfile,obstr);
2396	fclose(tempfile);
2397
2398	op=get_object();
2399
2400	object_thawer thawer (filename);
2401
2402	if (thawer)
2403	load_object(thawer,op,0);
2404
2405	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2406	CLEAR_FLAG(op,FLAG_REMOVED);
2407
2408	return op;
2409	}	2350	}
2410		2351
2411	/* This returns the first object in who's inventory that	2352	/* This returns the first object in who's inventory that
2412	* has the same type and subtype match.	2353	* has the same type and subtype match.
2413	* returns NULL if no match.	2354	* returns NULL if no match.
2414	*/	2355	*/
		2356	object *
2415	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2357	find_obj_by_type_subtype (const object *who, int type, int subtype)
2416	{	2358	{
2417	object *tmp;
2418
2419	for (tmp=who->inv; tmp; tmp=tmp->below)	2359	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2420	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2360	if (tmp->type == type && tmp->subtype == subtype)
		2361	return tmp;
2421		2362
2422	return NULL;	2363	return 0;
2423	}	2364	}
2424		2365
2425	/* If ob has a field named key, return the link from the list,	2366	/* If ob has a field named key, return the link from the list,
2426	* otherwise return NULL.	2367	* otherwise return NULL.
2427	*	2368	*
2428	* key must be a passed in shared string - otherwise, this won't	2369	* key must be a passed in shared string - otherwise, this won't
2429	* do the desired thing.	2370	* do the desired thing.
2430	*/	2371	*/
		2372	key_value *
2431	key_value * get_ob_key_link(const object * ob, const char * key) {	2373	get_ob_key_link (const object *ob, const char *key)
2432	key_value * link;	2374	{
2433
2434	for (link = ob->key_values; link != NULL; link = link->next) {	2375	for (key_value *link = ob->key_values; link; link = link->next)
2435	if (link->key == key) {	2376	if (link->key == key)
2436	return link;	2377	return link;
2437	}	2378
2438	}	2379	return 0;
2439		2380	}
2440	return NULL;
2441	}
2442		2381
2443	/*	2382	/*
2444	* Returns the value of op has an extra_field for key, or NULL.	2383	* Returns the value of op has an extra_field for key, or NULL.
2445	*	2384	*
2446	* The argument doesn't need to be a shared string.	2385	* The argument doesn't need to be a shared string.
2447	*	2386	*
2448	* The returned string is shared.	2387	* The returned string is shared.
2449	*/	2388	*/
		2389	const char *
2450	const char * get_ob_key_value(const object * op, const char * const key) {	2390	get_ob_key_value (const object *op, const char *const key)
		2391	{
2451	key_value * link;	2392	key_value *link;
2452	const char * canonical_key;	2393	shstr_cmp canonical_key (key);
		2394
		2395	if (!canonical_key)
2453		2396	{
2454	canonical_key = shstr::find (key);
2455
2456	if (canonical_key == NULL) {
2457	/* 1. There being a field named key on any object	2397	/* 1. There being a field named key on any object
2458	* implies there'd be a shared string to find.	2398	* implies there'd be a shared string to find.
2459	* 2. Since there isn't, no object has this field.	2399	* 2. Since there isn't, no object has this field.
2460	* 3. Therefore, *this* object doesn't have this field.	2400	* 3. Therefore, *this* object doesn't have this field.
2461	*/	2401	*/
2462	return NULL;	2402	return 0;
2463	}	2403	}
2464		2404
2465	/* This is copied from get_ob_key_link() above -	2405	/* This is copied from get_ob_key_link() above -
2466	* only 4 lines, and saves the function call overhead.	2406	* only 4 lines, and saves the function call overhead.
2467	*/	2407	*/
2468	for (link = op->key_values; link != NULL; link = link->next) {	2408	for (link = op->key_values; link; link = link->next)
2469	if (link->key == canonical_key) {	2409	if (link->key == canonical_key)
2470	return link->value;	2410	return link->value;
2471	}
2472	}
2473	return NULL;
2474	}
2475		2411
		2412	return 0;
		2413	}
2476		2414
2477	/*	2415	/*
2478	* Updates the canonical_key in op to value.	2416	* Updates the canonical_key in op to value.
2479	*	2417	*
2480	* canonical_key is a shared string (value doesn't have to be).	2418	* canonical_key is a shared string (value doesn't have to be).
…		…
2482	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2420	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2483	* keys.	2421	* keys.
2484	*	2422	*
2485	* Returns TRUE on success.	2423	* Returns TRUE on success.
2486	*/	2424	*/
		2425	int
2487	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2426	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2427	{
2488	key_value * field = NULL, *last=NULL;	2428	key_value *field = NULL, *last = NULL;
2489		2429
2490	for (field=op->key_values; field != NULL; field=field->next) {	2430	for (field = op->key_values; field != NULL; field = field->next)
		2431	{
2491	if (field->key != canonical_key) {	2432	if (field->key != canonical_key)
		2433	{
2492	last = field;	2434	last = field;
2493	continue;	2435	continue;
2494	}	2436	}
2495		2437
2496	if (value)	2438	if (value)
2497	field->value = value;	2439	field->value = value;
2498	else {	2440	else
		2441	{
2499	/* Basically, if the archetype has this key set,	2442	/* Basically, if the archetype has this key set,
2500	* we need to store the null value so when we save	2443	* we need to store the null value so when we save
2501	* it, we save the empty value so that when we load,	2444	* it, we save the empty value so that when we load,
2502	* we get this value back again.	2445	* we get this value back again.
2503	*/	2446	*/
2504	if (get_ob_key_link (&op->arch->clone, canonical_key))	2447	if (get_ob_key_link (op->arch, canonical_key))
2505	field->value = 0;	2448	field->value = 0;
		2449	else
		2450	{
		2451	if (last)
		2452	last->next = field->next;
2506	else	2453	else
2507	{
2508	if (last) last->next = field->next;
2509	else op->key_values = field->next;	2454	op->key_values = field->next;
2510		2455
2511	delete field;	2456	delete field;
2512	}	2457	}
2513	}	2458	}
2514	return TRUE;	2459	return TRUE;
2515	}	2460	}
2516	/* IF we get here, key doesn't exist */	2461	/* IF we get here, key doesn't exist */
2517		2462
2518	/* No field, we'll have to add it. */	2463	/* No field, we'll have to add it. */
2519		2464
2520	if (!add_key) {	2465	if (!add_key)
2521	return FALSE;	2466	return FALSE;
2522	}	2467
2523	/* There isn't any good reason to store a null	2468	/* There isn't any good reason to store a null
2524	* value in the key/value list. If the archetype has	2469	* value in the key/value list. If the archetype has
2525	* this key, then we should also have it, so shouldn't	2470	* this key, then we should also have it, so shouldn't
2526	* be here. If user wants to store empty strings,	2471	* be here. If user wants to store empty strings,
2527	* should pass in ""	2472	* should pass in ""
2528	*/	2473	*/
2529	if (value == NULL) return TRUE;	2474	if (value == NULL)
2530
2531	field = new key_value;
2532
2533	field->key = canonical_key;
2534	field->value = value;
2535	/* Usual prepend-addition. */
2536	field->next = op->key_values;
2537	op->key_values = field;
2538
2539	return TRUE;	2475	return TRUE;
		2476
		2477	field = new key_value;
		2478
		2479	field->key = canonical_key;
		2480	field->value = value;
		2481	/* Usual prepend-addition. */
		2482	field->next = op->key_values;
		2483	op->key_values = field;
		2484
		2485	return TRUE;
2540	}	2486	}
2541		2487
2542	/*	2488	/*
2543	* Updates the key in op to value.	2489	* Updates the key in op to value.
2544	*	2490	*
…		…
2546	* and not add new ones.	2492	* and not add new ones.
2547	* In general, should be little reason FALSE is ever passed in for add_key	2493	* In general, should be little reason FALSE is ever passed in for add_key
2548	*	2494	*
2549	* Returns TRUE on success.	2495	* Returns TRUE on success.
2550	*/	2496	*/
		2497	int
2551	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2498	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2552	{	2499	{
2553	shstr key_ (key);	2500	shstr key_ (key);
		2501
2554	return set_ob_key_value_s (op, key_, value, add_key);	2502	return set_ob_key_value_s (op, key_, value, add_key);
2555	}	2503	}
		2504
		2505	object::depth_iterator::depth_iterator (object *container)
		2506	: iterator_base (container)
		2507	{
		2508	while (item->inv)
		2509	item = item->inv;
		2510	}
		2511
		2512	void
		2513	object::depth_iterator::next ()
		2514	{
		2515	if (item->below)
		2516	{
		2517	item = item->below;
		2518
		2519	while (item->inv)
		2520	item = item->inv;
		2521	}
		2522	else
		2523	item = item->env;
		2524	}
		2525
		2526	const char *
		2527	object::flag_desc (char *desc, int len) const
		2528	{
		2529	char *p = desc;
		2530	bool first = true;
		2531
		2532	*p = 0;
		2533
		2534	for (int i = 0; i < NUM_FLAGS; i++)
		2535	{
		2536	if (len <= 10) // magic constant!
		2537	{
		2538	snprintf (p, len, ",...");
		2539	break;
		2540	}
		2541
		2542	if (flag [i])
		2543	{
		2544	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2545	len -= cnt;
		2546	p += cnt;
		2547	first = false;
		2548	}
		2549	}
		2550
		2551	return desc;
		2552	}
		2553
		2554	// return a suitable string describing an object in enough detail to find it
		2555	const char *
		2556	object::debug_desc (char *info) const
		2557	{
		2558	char flagdesc[512];
		2559	char info2[256 * 4];
		2560	char *p = info;
		2561
		2562	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2563	count,
		2564	uuid.c_str (),
		2565	&name,
		2566	title ? "\",title:\"" : "",
		2567	title ? (const char *)title : "",
		2568	flag_desc (flagdesc, 512), type);
		2569
		2570	if (!this->flag[FLAG_REMOVED] && env)
		2571	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2572
		2573	if (map)
		2574	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2575
		2576	return info;
		2577	}
		2578
		2579	const char *
		2580	object::debug_desc () const
		2581	{
		2582	static char info[3][256 * 4];
		2583	static int info_idx;
		2584
		2585	return debug_desc (info [++info_idx % 3]);
		2586	}
		2587
		2588	struct region *
		2589	object::region () const
		2590	{
		2591	return map ? map->region (x, y)
		2592	: region::default_region ();
		2593	}
		2594
		2595	const materialtype_t *
		2596	object::dominant_material () const
		2597	{
		2598	if (materialtype_t *mt = name_to_material (materialname))
		2599	return mt;
		2600
		2601	return name_to_material (shstr_unknown);
		2602	}
		2603
		2604	void
		2605	object::open_container (object *new_container)
		2606	{
		2607	if (container == new_container)
		2608	return;
		2609
		2610	if (object *old_container = container)
		2611	{
		2612	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2613	return;
		2614
		2615	#if 0
		2616	// remove the "Close old_container" object.
		2617	if (object *closer = old_container->inv)
		2618	if (closer->type == CLOSE_CON)
		2619	closer->destroy ();
		2620	#endif
		2621
		2622	old_container->flag [FLAG_APPLIED] = 0;
		2623	container = 0;
		2624
		2625	esrv_update_item (UPD_FLAGS, this, old_container);
		2626	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
		2627	play_sound (sound_find ("chest_close"));
		2628	}
		2629
		2630	if (new_container)
		2631	{
		2632	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2633	return;
		2634
		2635	// TODO: this does not seem to serve any purpose anymore?
		2636	#if 0
		2637	// insert the "Close Container" object.
		2638	if (archetype *closer = new_container->other_arch)
		2639	{
		2640	object *closer = arch_to_object (new_container->other_arch);
		2641	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2642	new_container->insert (closer);
		2643	}
		2644	#endif
		2645
		2646	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2647
		2648	new_container->flag [FLAG_APPLIED] = 1;
		2649	container = new_container;
		2650
		2651	esrv_update_item (UPD_FLAGS, this, new_container);
		2652	esrv_send_inventory (this, new_container);
		2653	play_sound (sound_find ("chest_open"));
		2654	}
		2655	}
		2656
		2657	object *
		2658	object::force_find (const shstr name)
		2659	{
		2660	/* cycle through his inventory to look for the MARK we want to
		2661	* place
		2662	*/
		2663	for (object *tmp = inv; tmp; tmp = tmp->below)
		2664	if (tmp->type == FORCE && tmp->slaying == name)
		2665	return splay (tmp);
		2666
		2667	return 0;
		2668	}
		2669
		2670	void
		2671	object::force_add (const shstr name, int duration)
		2672	{
		2673	if (object *force = force_find (name))
		2674	force->destroy ();
		2675
		2676	object *force = get_archetype (FORCE_NAME);
		2677
		2678	force->slaying = name;
		2679	force->stats.food = 1;
		2680	force->speed_left = -1.f;
		2681
		2682	force->set_speed (duration ? 1.f / duration : 0.f);
		2683	force->flag [FLAG_IS_USED_UP] = true;
		2684	force->flag [FLAG_APPLIED] = true;
		2685
		2686	insert (force);
		2687	}
		2688
		2689	void
		2690	object::play_sound (faceidx sound)
		2691	{
		2692	if (!sound)
		2693	return;
		2694
		2695	if (flag [FLAG_REMOVED])
		2696	return;
		2697
		2698	if (env)
		2699	{
		2700	if (object *pl = in_player ())
		2701	pl->contr->play_sound (sound);
		2702	}
		2703	else
		2704	map->play_sound (sound, x, y);
		2705	}
		2706

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