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Comparing deliantra/server/common/object.C (file contents):
Revision 1.19 by root, Fri Sep 8 17:14:07 2006 UTC vs.
Revision 1.298 by root, Sun Nov 8 00:01:33 2009 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 1.19 2006/09/08 17:14:07 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008,2009 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 it under
13	it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
14	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
15	(at your option) any later version.	11	* 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 Affero GNU General Public License
23	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
25		21	*
26	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	* The authors can be reached via e-mail to <support@deliantra.net>
27	*/	23	*/
28		24
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>	25	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	26	#include <stdio.h>
35	#include <sys/types.h>	27	#include <sys/types.h>
36	#include <sys/uio.h>	28	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	29	#include <object.h>
39	#include <funcpoint.h>	30	#include <sproto.h>
40	#include <skills.h>
41	#include <loader.h>	31	#include <loader.h>
42	int nrofallocobjects = 0;
43		32
44	object *objects; /* Pointer to the list of used objects */	33	#include <bitset>
45	object *active_objects; /* List of active objects that need to be processed */
46		34
		35	UUID UUID::cur;
		36	static uint64_t seq_next_save;
		37	static const uint64 UUID_GAP = 1<<19;
		38	uint32_t mapspace::smellcount = 10000;
		39
		40	objectvec objects;
		41	activevec actives;
		42
		43	//+GPL
		44
47	short freearr_x[SIZEOFFREE]=	45	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,	46	0,
		47	0, 1, 1, 1, 0, -1, -1, -1,
		48	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};	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
		50	};
50	short freearr_y[SIZEOFFREE]=	51	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,	52	0,
		53	-1, -1, 0, 1, 1, 1, 0, -1,
		54	-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};	55	-3, -3, -3, -3, -2, -1, 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3
53	int maxfree[SIZEOFFREE]=	56	};
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,
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};
56	int freedir[SIZEOFFREE]= {	57	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,	58	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};	59	1, 2, 3, 4, 5, 6, 7, 8,
		60	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		61	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		62	};
59		63
		64	static int maxfree[SIZEOFFREE] = {
		65	0,
		66	9, 10, 13, 14, 17, 18, 21, 22,
		67	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
		68	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		69	};
		70
		71	static void
		72	write_uuid (uval64 skip, bool sync)
		73	{
		74	CALL_BEGIN (2);
		75	CALL_ARG_SV (newSVval64 (skip));
		76	CALL_ARG_SV (boolSV (sync));
		77	CALL_CALL ("cf::write_uuid", G_DISCARD);
		78	CALL_END;
		79	}
		80
		81	static void
		82	read_uuid (void)
		83	{
		84	char filename[MAX_BUF];
		85
		86	sprintf (filename, "%s/uuid", settings.localdir);
		87
		88	seq_next_save = 0;
		89
		90	FILE *fp;
		91
		92	if (!(fp = fopen (filename, "r")))
		93	{
		94	if (errno == ENOENT)
		95	{
		96	LOG (llevInfo, "RESET uid to 1\n");
		97	UUID::cur.seq = 0;
		98	write_uuid (UUID_GAP, true);
		99	return;
		100	}
		101
		102	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		103	_exit (1);
		104	}
		105
		106	UUID::BUF buf;
		107	buf[0] = 0;
		108	fgets (buf, sizeof (buf), fp);
		109
		110	if (!UUID::cur.parse (buf))
		111	{
		112	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		113	_exit (1);
		114	}
		115
		116	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		117
		118	write_uuid (UUID_GAP, true);
		119	fclose (fp);
		120	}
		121
		122	UUID
		123	UUID::gen ()
		124	{
		125	UUID uid;
		126
		127	uid.seq = ++cur.seq;
		128
		129	if (expect_false (cur.seq >= seq_next_save))
		130	{
		131	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		132	write_uuid (UUID_GAP, false);
		133	}
		134
		135
		136	return uid;
		137	}
		138
		139	void
		140	UUID::init ()
		141	{
		142	read_uuid ();
		143	}
60		144
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	145	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		146	static bool
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	147	compare_ob_value_lists_one (const object *wants, const object *has)
63	key_value * wants_field;	148	{
64
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	149	/* n-squared behaviour (see kv_get), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	150	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	151	* different structure or at least keep the lists sorted...
68	*/	152	*/
69		153
70	/* For each field in wants, */	154	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	155	for (key_value *kv = wants->key_values; kv; kv = kv->next)
72	key_value * has_field;	156	if (has->kv_get (kv->key) != kv->value)
73		157	return false;
74	/* Look for a field in has with the same key. */	158
75	has_field = get_ob_key_link(has, wants_field->key);
76
77	if (has_field == NULL) {
78	/* No field with that name. */
79	return FALSE;
80	}
81
82	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {
84	/* Values don't match, so this half of the comparison is false. */
85	return FALSE;
86	}
87
88	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90
91	/* If we get here, every field in wants has a matching field in has. */	159	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	160	return true;
93	}	161	}
94		162
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	163	/* Returns TRUE if ob1 has the same key_values as ob2. */
		164	static bool
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	165	compare_ob_value_lists (const object *ob1, const object *ob2)
		166	{
97	/* However, there may be fields in has which aren't partnered in wants,	167	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	168	* so we need to run the comparison *twice*. :(
99	*/	169	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	170	return compare_ob_value_lists_one (ob1, ob2)
		171	&& compare_ob_value_lists_one (ob2, ob1);
101	}	172	}
102		173
103	/* Function examines the 2 objects given to it, and returns true if	174	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	175	* they can be merged together.
105	*	176	*
106	* Note that this function appears a lot longer than the macro it	177	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	178	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	179	* reduce this to the same efficiency.
109	*	180	*
110	* Check nrof variable *before* calling CAN_MERGE()	181	* Check nrof variable *before* calling can_merge()
111	*	182	*
112	* Improvements made with merge: Better checking on potion, and also	183	* Improvements made with merge: Better checking on potion, and also
113	* check weight	184	* check weight
114	*/	185	*/
115
116	bool
117	object::can_merge (object *ob1, object *ob2)	186	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	187	{
119	/* A couple quicksanity checks */	188	/* A couple quicksanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	189	if (ob1 == ob2
		190	|| ob1->type != ob2->type
		191	|| fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED
		192	|| ob1->value != ob2->value
		193	|| ob1->name != ob2->name)
121	return 0;	194	return 0;
122		195
123	if (ob1->speed != ob2->speed)	196	/* Do not merge objects if nrof would overflow, assume nrof
		197	* is always 0 .. 2**31-1 */
		198	if (ob1->nrof > 0x7fffffff - ob2->nrof)
124	return 0;	199	return 0;
125		200
126	/* Do not merge objects if nrof would overflow. We use 1UL<<31 since that
127	* value could not be stored in a sint32 (which unfortunately sometimes is
128	* used to store nrof).
129	*/
130	if (ob1->nrof + ob2->nrof >= 1UL << 31)
131	return 0;
132
133	/* If the objects have been identified, set the BEEN_APPLIED flag.	201	/* If the objects have been identified, set the BEEN_APPLIED flag.
134	* This is to the comparison of the flags below will be OK. We	202	* This is to the comparison of the flags below will be OK. We
135	* just can't ignore the been applied or identified flags, as they	203	* just can't ignore the been applied or identified flags, as they
136	* are not equal - just if it has been identified, the been_applied	204	* are not equal - just if it has been identified, the been_applied
137	* flags lose any meaning.	205	* flags lose any meaning.
138	*/	206	*/
139	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	207	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	208	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		209
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	210	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	211	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		212
145		213	if (ob1->arch->archname != ob2->arch->archname
146	/* the 0x400000 on flags2 is FLAG_INV_LOCK. I don't think something
147	* being locked in inventory should prevent merging.
148	* 0x4 in flags3 is CLIENT_SENT
149	*/
150	if ((ob1->arch != ob2->arch) ||
151	(ob1->flags[0] != ob2->flags[0]) ||
152	(ob1->flags[1] != ob2->flags[1]) ||
153	((ob1->flags[2] & ~0x400000) != (ob2->flags[2] & ~0x400000)) ||
154	((ob1->flags[3] & ~0x4) != (ob2->flags[3] & ~0x4)) ||
155	(ob1->name != ob2->name) ||	214	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	215	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	216	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	217	|| ob1->weight != ob2->weight
159	(memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist)) != 0) ||
160	(memcmp (&ob1->stats, &ob2->stats, sizeof (ob1->stats)) != 0) ||
161	(ob1->attacktype != ob2->attacktype) ||	218	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	219	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	220	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	221	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	222	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	223	|| ob1->animation_id != ob2->animation_id
		224	|| (ob1->face != ob2->face && !ob1->animation_id) // face and animation are dependent on each other
167	(ob1->client_type != ob2->client_type) ||	225	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	226	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	227	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	228	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	229	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	230	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	231	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	232	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	233	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	234	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	235	|| fabs (ob1->move_slow_penalty - ob2->move_slow_penalty) >= (1.f / 1024.f)
		236	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		237	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
178	return 0;	238	return 0;
179		239
		240	if ((ob1->flag ^ ob2->flag)
		241	.reset (FLAG_INV_LOCKED)
		242	.reset (FLAG_REMOVED)
		243	.any ())
		244	return 0;
		245
180	/* This is really a spellbook check - really, we should	246	/* This is really a spellbook check - we should in general
181	* check all objects in the inventory.	247	* not merge objects with real inventories, as splitting them
		248	* is hard.
182	*/	249	*/
183	if (ob1->inv || ob2->inv)	250	if (ob1->inv || ob2->inv)
184	{	251	{
185	/* if one object has inventory but the other doesn't, not equiv */
186	if ((ob1->inv && !ob2->inv) || (ob2->inv && !ob1->inv))
187	return 0;
188
189	/* Now check to see if the two inventory objects could merge */
190	if (!CAN_MERGE (ob1->inv, ob2->inv))	252	if (!(ob1->inv && ob2->inv))
191	return 0;	253	return 0; /* inventories differ in length */
		254
		255	if (ob1->inv->below || ob2->inv->below)
		256	return 0; /* more than one object in inv */
		257
		258	if (!object::can_merge (ob1->inv, ob2->inv))
		259	return 0; /* inventory objects differ */
192		260
193	/* inventory ok - still need to check rest of this object to see	261	/* inventory ok - still need to check rest of this object to see
194	* if it is valid.	262	* if it is valid.
195	*/	263	*/
196	}	264	}
…		…
204		272
205	/* Note sure why the following is the case - either the object has to	273	/* Note sure why the following is the case - either the object has to
206	* be animated or have a very low speed. Is this an attempted monster	274	* be animated or have a very low speed. Is this an attempted monster
207	* check?	275	* check?
208	*/	276	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	277	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	278	return 0;
212		279
213	switch (ob1->type)	280	switch (ob1->type)
214	{	281	{
215	case SCROLL:	282	case SCROLL:
216	if (ob1->level != ob2->level)	283	if (ob1->level != ob2->level)
217	return 0;	284	return 0;
218	break;	285	break;
219	}	286	}
220		287
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	288	if (ob1->key_values || ob2->key_values)
222	{	289	{
223	/* At least one of these has key_values. */	290	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	291	if ((!ob1->key_values) != (!ob2->key_values))
225	/* One has fields, but the other one doesn't. */	292	return 0; /* One has fields, but the other one doesn't. */
226	return 0;	293
227	else if (!compare_ob_value_lists (ob1, ob2))	294	if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	295	return 0;
229	}	296	}
230		297
231	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	298	if (ob1->self || ob2->self)
233	{	299	{
234	ob1->optimise ();	300	ob1->optimise ();
235	ob2->optimise ();	301	ob2->optimise ();
236		302
237	if (ob1->self || ob2->self)	303	if (ob1->self || ob2->self)
238	return 0;	304	{
		305	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		306	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		307
		308	if (k1 != k2)
		309	return 0;
		310
		311	if (k1 == 0)
		312	return 1;
		313
		314	if (!cfperl_can_merge (ob1, ob2))
		315	return 0;
		316	}
239	}	317	}
240		318
241	/* Everything passes, must be OK. */	319	/* Everything passes, must be OK. */
242	return 1;	320	return 1;
243	}	321	}
		322
		323	// find player who can see this object
		324	object *
		325	object::visible_to () const
		326	{
		327	if (client_visible () && !flag [FLAG_REMOVED])
		328	{
		329	// see if we are in a container of sorts
		330	if (env)
		331	{
		332	// the player inventory itself is always visible
		333	if (env->is_player ())
		334	return env;
		335
		336	// else a player could have our env open
		337	object *envest = env->outer_env_or_self ();
		338
		339	// the player itself is always on a map, so we will find him here
		340	// even if our inv is in a player.
		341	if (envest->is_on_map ())
		342	if (object *pl = envest->ms ().player ())
		343	if (pl->container_ () == env)
		344	return pl;
		345	}
		346	else
		347	{
		348	// maybe there is a player standing on the same mapspace
		349	// this will catch the case where "this" is a player
		350	if (object *pl = ms ().player ())
		351	if ((pl->contr->ns && !pl->container_ () && !pl->contr->ns->update_look)
		352	|| pl->container_ () == this)
		353	return pl;
		354	}
		355	}
		356
		357	return 0;
		358	}
		359
		360	// adjust weight per container type ("of holding")
		361	static sint32
		362	weight_adjust_for (object *op, sint32 weight)
		363	{
		364	return op->type == CONTAINER
		365	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		366	: weight;
		367	}
		368
244	/*	369	/*
		370	* adjust_weight(object, weight) adds the specified weight to an object,
		371	* and also updates how much the environment(s) is/are carrying.
		372	*/
		373	static void
		374	adjust_weight (object *op, sint32 weight)
		375	{
		376	while (op)
		377	{
		378	// adjust by actual difference to account for rounding errors
		379	// i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
		380	weight = weight_adjust_for (op, op->carrying)
		381	- weight_adjust_for (op, op->carrying - weight);
		382
		383	if (!weight)
		384	return;
		385
		386	op->carrying += weight;
		387
		388	if (object *pl = op->visible_to ())
		389	if (pl != op) // player is handled lazily
		390	esrv_update_item (UPD_WEIGHT, pl, op);
		391
		392	op = op->env;
		393	}
		394	}
		395
		396	/*
245	* sum_weight() is a recursive function which calculates the weight	397	* this is a recursive function which calculates the weight
246	* an object is carrying. It goes through in figures out how much	398	* an object is carrying. It goes through op and figures out how much
247	* containers are carrying, and sums it up.	399	* containers are carrying, and sums it up.
248	*/	400	*/
249	signed long sum_weight(object *op) {	401	void
250	signed long sum;	402	object::update_weight ()
251	object *inv;	403	{
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	404	sint32 sum = 0;
		405
		406	for (object *op = inv; op; op = op->below)
		407	{
253	if (inv->inv)	408	if (op->inv)
254	sum_weight(inv);	409	op->update_weight ();
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);	410
		411	sum += op->total_weight ();
256	}	412	}
257	if (op->type == CONTAINER && op->stats.Str)	413
258	sum = (sum * (100 - op->stats.Str))/100;	414	sum = weight_adjust_for (this, sum);
259	if(op->carrying != sum)	415
		416	if (sum != carrying)
		417	{
260	op->carrying = sum;	418	carrying = sum;
261	return sum;
262	}
263		419
		420	if (object *pl = visible_to ())
		421	if (pl != this) // player is handled lazily
		422	esrv_update_item (UPD_WEIGHT, pl, this);
		423	}
		424	}
		425
264	/**	426	/*
265	* Return the outermost environment object for a given object.	427	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
266	*/	428	*/
267		429	char *
268	object *object_get_env_recursive (object *op) {
269	while (op->env != NULL)
270	op = op->env;
271	return op;
272	}
273
274	/*
275	* Eneq(@csd.uu.se): Since we can have items buried in a character we need
276	* a better check. We basically keeping traversing up until we can't
277	* or find a player.
278	*/
279
280	object *is_player_inv (object *op) {
281	for (;op!=NULL&&op->type!=PLAYER; op=op->env)
282	if (op->env==op)
283	op->env = NULL;
284	return op;
285	}
286
287	/*
288	* Used by: Crossedit: dump. Server DM commands: dumpbelow, dump.
289	* Some error messages.
290	* The result of the dump is stored in the static global errmsg array.
291	*/
292
293	void dump_object2(object *op) {
294	errmsg[0] = 0;
295	return;
296	//TODO//D#d#
297	#if 0
298	char *cp;
299	/* object *tmp;*/
300
301	if(op->arch!=NULL) {
302	strcat(errmsg,"arch ");
303	strcat(errmsg,op->arch->name?op->arch->name:"(null)");
304	strcat(errmsg,"\n");
305	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
306	strcat(errmsg,cp);
307	#if 0
308	/* Don't dump player diffs - they are too long, mostly meaningless, and
309	* will overflow the buffer.
310	* Changed so that we don't dump inventory either. This may
311	* also overflow the buffer.
312	*/
313	if(op->type!=PLAYER && (cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
314	strcat(errmsg,cp);
315	for (tmp=op->inv; tmp; tmp=tmp->below)
316	dump_object2(tmp);
317	#endif
318	strcat(errmsg,"end\n");
319	} else {
320	strcat(errmsg,"Object ");
321	if (op->name==NULL) strcat(errmsg, "(null)");
322	else strcat(errmsg,op->name);
323	strcat(errmsg,"\n");
324	#if 0
325	if((cp=get_ob_diff(op,&empty_archetype->clone))!=NULL)
326	strcat(errmsg,cp);
327	for (tmp=op->inv; tmp; tmp=tmp->below)
328	dump_object2(tmp);
329	#endif
330	strcat(errmsg,"end\n");
331	}
332	#endif
333	}
334
335	/*
336	* Dumps an object. Returns output in the static global errmsg array.
337	*/
338
339	void dump_object(object *op) {	430	dump_object (object *op)
340	if(op==NULL) {	431	{
341	strcpy(errmsg,"[NULL pointer]");	432	if (!op)
342	return;	433	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		434
348	void dump_all_objects(void) {	435	object_freezer freezer;
349	object *op;	436	op->write (freezer);
350	for(op=objects;op!=NULL;op=op->next) {	437	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	438	}
355		439
356	/*	440	char *
357	* get_nearest_part(multi-object, object 2) returns the part of the	441	object::as_string ()
358	* multi-object 1 which is closest to the second object.	442	{
359	* If it's not a multi-object, it is returned.	443	return dump_object (this);
360	*/
361
362	object *get_nearest_part(object *op, const object *pl) {
363	object *tmp,*closest;
364	int last_dist,i;
365	if(op->more==NULL)
366	return op;
367	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)
368	if((i=distance(tmp,pl))<last_dist)
369	closest=tmp,last_dist=i;
370	return closest;
371	}	444	}
372		445
373	/*	446	/*
374	* Returns the object which has the count-variable equal to the argument.	447	* Returns the object which has the count-variable equal to the argument.
		448	* VERRRY slow.
375	*/	449	*/
376		450	object *
377	object *find_object(tag_t i) {	451	find_object (tag_t i)
378	object *op;	452	{
379	for(op=objects;op!=NULL;op=op->next)	453	for_all_objects (op)
380	if(op->count==i)	454	if (op->count == i)
381	break;
382	return op;	455	return op;
		456
		457	return 0;
383	}	458	}
384		459
385	/*	460	/*
386	* Returns the first object which has a name equal to the argument.	461	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	462	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	463	* Enables features like "patch <name-of-other-player> food 999"
389	*/	464	*/
390		465	object *
391	object *find_object_name(const char *str) {	466	find_object_name (const char *str)
392	const char *name = shstr::find (str);	467	{
393	object *op;	468	shstr_cmp str_ (str);
394	for(op=objects;op!=NULL;op=op->next)	469
		470	if (str_)
		471	for_all_objects (op)
395	if(&op->name == name)	472	if (op->name == str_)
396	break;	473	return op;
397		474
398	return op;	475	return 0;
399	}
400
401	void free_all_object_data ()
402	{
403	LOG (llevDebug, "%d allocated objects\n", nrofallocobjects);
404	}
405
406	/*
407	* Returns the object which this object marks as being the owner.
408	* A id-scheme is used to avoid pointing to objects which have been
409	* freed and are now reused. If this is detected, the owner is
410	* set to NULL, and NULL is returned.
411	* Changed 2004-02-12 - if the player is setting at the play again
412	* prompt, he is removed, and we don't want to treat him as an owner of
413	* anything, so check removed flag. I don't expect that this should break
414	* anything - once an object is removed, it is basically dead anyways.
415	*/
416
417	object *get_owner(object *op) {
418	if(op->owner==NULL)
419	return NULL;
420
421	if (!QUERY_FLAG(op->owner,FLAG_FREED) && !QUERY_FLAG(op->owner, FLAG_REMOVED) &&
422	op->owner->count==op->ownercount)
423	return op->owner;
424
425	op->owner=NULL;
426	op->ownercount=0;
427	return NULL;
428	}
429
430	void clear_owner(object *op)
431	{
432	if (!op) return;
433
434	if (op->owner && op->ownercount == op->owner->count)
435	op->owner->refcount--;
436
437	op->owner = NULL;
438	op->ownercount = 0;
439	}	476	}
440		477
441	/*	478	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	479	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	480	* skill and experience objects.
		481	* ACTUALLY NO! investigate! TODO
444	*/	482	*/
445	void set_owner (object *op, object *owner)	483	void
		484	object::set_owner (object *owner)
446	{	485	{
447	if(owner==NULL||op==NULL)	486	// allow objects which own objects
		487	if (owner)
		488	while (owner->owner)
		489	owner = owner->owner;
		490
		491	if (flag [FLAG_FREED])
		492	{
		493	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
448	return;	494	return;
		495	}
449		496
450	/* next line added to allow objects which own objects */
451	/* Add a check for ownercounts in here, as I got into an endless loop
452	* with the fireball owning a poison cloud which then owned the
453	* fireball. I believe that was caused by one of the objects getting
454	* freed and then another object replacing it. Since the ownercounts
455	* didn't match, this check is valid and I believe that cause is valid.
456	*/
457	while (owner->owner && owner!=owner->owner &&
458	owner->ownercount==owner->owner->count) owner=owner->owner;
459
460	/* IF the owner still has an owner, we did not resolve to a final owner.
461	* so lets not add to that.
462	*/
463	if (owner->owner) return;
464
465	op->owner=owner;	497	this->owner = owner;
466
467	op->ownercount=owner->count;
468	owner->refcount++;
469
470	}	498	}
471		499
472	/* Set the owner to clone's current owner and set the skill and experience	500	int
473	* objects to clone's objects (typically those objects that where the owner's	501	object::slottype () const
474	* current skill and experience objects at the time when clone's owner was
475	* set - not the owner's current skill and experience objects).
476	*
477	* Use this function if player created an object (e.g. fire bullet, swarm
478	* spell), and this object creates further objects whose kills should be
479	* accounted for the player's original skill, even if player has changed
480	* skills meanwhile.
481	*/
482	void copy_owner (object *op, object *clone)
483	{	502	{
484	object *owner = get_owner (clone);	503	if (type == SKILL)
485	if (owner == NULL) {	504	{
486	/* players don't have owners - they own themselves. Update	505	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
487	* as appropriate.	506	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		507	}
		508	else
		509	{
		510	if (slot [body_combat].info) return slot_combat;
		511	if (slot [body_range ].info) return slot_ranged;
		512	}
		513
		514	return slot_none;
		515	}
		516
		517	bool
		518	object::change_weapon (object *ob)
		519	{
		520	if (current_weapon == ob)
		521	return true;
		522
		523	if (chosen_skill)
		524	chosen_skill->flag [FLAG_APPLIED] = false;
		525
		526	current_weapon = ob;
		527	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		528
		529	if (chosen_skill)
		530	chosen_skill->flag [FLAG_APPLIED] = true;
		531
		532	update_stats ();
		533
		534	if (ob)
		535	{
		536	// now check wether any body locations became invalid, in which case
		537	// we cannot apply the weapon at the moment.
		538	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		539	if (slot[i].used < 0)
488	*/	540	{
489	if (clone->type == PLAYER) owner=clone;	541	current_weapon = chosen_skill = 0;
490	else return;	542	update_stats ();
		543
		544	new_draw_info_format (NDI_UNIQUE, 0, this,
		545	"You try to balance all your items at once, "
		546	"but the %s is just too much for your body. "
		547	"[You need to unapply some items first - use the 'body' command to see "
		548	"how many items you cna wera on a specific body part.]", &ob->name);
		549	return false;
		550	}
		551
		552	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		553	}
		554	else
		555	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		556
		557	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
491	}	558	{
492	set_owner(op, owner);	559	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		560	&name, ob->debug_desc ());
		561	return false;
		562	}
493		563
		564	return true;
494	}	565	}
495		566
496	/* Zero the key_values on op, decrementing the shared-string	567	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	568	* refcounts and freeing the links.
498	*/	569	*/
		570	static void
499	static void free_key_values(object * op)	571	free_key_values (object *op)
500	{	572	{
501	for (key_value *i = op->key_values; i != 0; )	573	for (key_value *i = op->key_values; i; )
502	{	574	{
503	key_value *next = i->next;	575	key_value *next = i->next;
504	delete i;	576	delete i;
		577
505	i = next;	578	i = next;
506	}	579	}
507		580
508	op->key_values = 0;	581	op->key_values = 0;
509	}	582	}
510		583
511	void object::clear ()
512	{
513	attachable_base::clear ();
514
515	free_key_values (this);
516
517	name = 0;
518	name_pl = 0;
519	title = 0;
520	race = 0;
521	slaying = 0;
522	skill = 0;
523	msg = 0;
524	lore = 0;
525	custom_name = 0;
526	materialname = 0;
527
528	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
529
530	SET_FLAG (this, FLAG_REMOVED);
531	}
532
533	void object::clone (object *destination)
534	{
535	*(object_copy *)destination = *(object_copy *)this;
536	*(object_pod *)destination = *(object_pod *)this;
537
538	if (self || cb)
539	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
540	}
541
542	/*	584	/*
543	* clear_object() frees everything allocated by an object, and also
544	* clears all variables and flags to default settings.
545	*/
546
547	void clear_object (object *op)
548	{
549	op->clear ();
550
551	op->contr = NULL;
552	op->below = NULL;
553	op->above = NULL;
554	op->inv = NULL;
555	op->container=NULL;
556	op->env=NULL;
557	op->more=NULL;
558	op->head=NULL;
559	op->map=NULL;
560	op->refcount=0;
561	op->active_next = NULL;
562	op->active_prev = NULL;
563	/* What is not cleared is next, prev, and count */
564
565	op->expmul = 1.0;
566	op->face = blank_face;
567	op->attacked_by_count = -1;
568
569	if (settings.casting_time)
570	op->casting_time = -1;
571	}
572
573	/*
574	* copy object first frees everything allocated by the second object,	585	* copy_to first frees everything allocated by the dst object,
575	* and then copies the contends of the first object into the second	586	* and then copies the contents of itself into the second
576	* object, allocating what needs to be allocated. Basically, any	587	* object, allocating what needs to be allocated. Basically, any
577	* data that is malloc'd needs to be re-malloc/copied. Otherwise,	588	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
578	* if the first object is freed, the pointers in the new object	589	* if the first object is freed, the pointers in the new object
579	* will point at garbage.	590	* will point at garbage.
580	*/	591	*/
581		592	void
582	void copy_object (object *op2, object *op)	593	object::copy_to (object *dst)
583	{	594	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);	595	dst->remove ();
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);	596	*(object_copy *)dst = *this;
586		597	dst->flag [FLAG_REMOVED] = true;
587	op2->clone (op);
588
589	if (is_freed) SET_FLAG (op, FLAG_FREED);
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);
591
592	if (op2->speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
594		598
595	/* Copy over key_values, if any. */	599	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	600	if (key_values)
597	{	601	{
598	key_value *tail = NULL;	602	key_value *tail = 0;
599	key_value *i;
600
601	op->key_values = NULL;	603	dst->key_values = 0;
602		604
603	for (i = op2->key_values; i != NULL; i = i->next)	605	for (key_value *i = key_values; i; i = i->next)
604	{	606	{
605	key_value *new_link = new key_value;	607	key_value *new_link = new key_value;
606		608
607	new_link->next = NULL;	609	new_link->next = 0;
608	new_link->key = i->key;	610	new_link->key = i->key;
609	new_link->value = i->value;	611	new_link->value = i->value;
610		612
611	/* Try and be clever here, too. */	613	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	614	if (!dst->key_values)
613	{	615	{
614	op->key_values = new_link;	616	dst->key_values = new_link;
615	tail = new_link;	617	tail = new_link;
616	}	618	}
617	else	619	else
618	{	620	{
619	tail->next = new_link;	621	tail->next = new_link;
620	tail = new_link;	622	tail = new_link;
621	}	623	}
622	}	624	}
623	}	625	}
624		626
625	update_ob_speed (op);	627	if (speed < 0)
626	}	628	dst->speed_left -= rndm ();
627		629
		630	dst->activate ();
		631	}
		632
		633	void
		634	object::instantiate ()
		635	{
		636	if (!uuid.seq) // HACK
		637	uuid = UUID::gen ();
		638
		639	speed_left = -0.1f;
		640	/* copy the body_info to the body_used - this is only really
		641	* need for monsters, but doesn't hurt to do it for everything.
		642	* by doing so, when a monster is created, it has good starting
		643	* values for the body_used info, so when items are created
		644	* for it, they can be properly equipped.
		645	*/
		646	for (int i = NUM_BODY_LOCATIONS; i--; )
		647	slot[i].used = slot[i].info;
		648
		649	attachable::instantiate ();
		650	}
		651
		652	object *
628	object::object ()	653	object::clone ()
629	{	654	{
630	count = ++ob_count;	655	object *neu = create ();
631		656	copy_to (neu);
632	next = objects;	657	neu->map = map; // not copied by copy_to
633		658	return neu;
634	if (objects)
635	objects->prev = this;
636
637	objects = this;
638
639	SET_FLAG (this, FLAG_REMOVED);
640
641	expmul = 1.0;
642	face = blank_face;
643	attacked_by_count = -1;
644	}
645
646	object::~object ()
647	{
648	}	659	}
649		660
650	/*	661	/*
651	* If an object with the IS_TURNABLE() flag needs to be turned due	662	* If an object with the IS_TURNABLE() flag needs to be turned due
652	* to the closest player being on the other side, this function can	663	* to the closest player being on the other side, this function can
653	* be called to update the face variable, _and_ how it looks on the map.	664	* be called to update the face variable, _and_ how it looks on the map.
654	*/	665	*/
655		666	void
656	void update_turn_face(object *op) {	667	update_turn_face (object *op)
		668	{
657	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	669	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
658	return;	670	return;
		671
659	SET_ANIMATION(op, op->direction);	672	SET_ANIMATION (op, op->direction);
660	update_object(op,UP_OBJ_FACE);	673	update_object (op, UP_OBJ_FACE);
661	}	674	}
662		675
663	/*	676	/*
664	* Updates the speed of an object. If the speed changes from 0 to another	677	* Updates the speed of an object. If the speed changes from 0 to another
665	* value, or vice versa, then add/remove the object from the active list.	678	* value, or vice versa, then add/remove the object from the active list.
666	* This function needs to be called whenever the speed of an object changes.	679	* This function needs to be called whenever the speed of an object changes.
667	*/	680	*/
		681	void
		682	object::set_speed (float speed)
		683	{
		684	this->speed = speed;
668		685
669	void update_ob_speed(object *op) {	686	if (has_active_speed ())
670	extern int arch_init;	687	activate ();
671
672	/* No reason putting the archetypes objects on the speed list,
673	* since they never really need to be updated.
674	*/
675
676	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
677	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);
678	#ifdef MANY_CORES
679	abort();
680	#else
681	op->speed = 0;
682	#endif
683	}
684	if (arch_init) {
685	return;
686	}
687	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
688	/* If already on active list, don't do anything */
689	if (op->active_next || op->active_prev || op==active_objects)
690	return;
691
692	/* process_events() expects us to insert the object at the beginning
693	* of the list. */
694	op->active_next = active_objects;
695	if (op->active_next!=NULL)
696	op->active_next->active_prev = op;
697	active_objects = op;
698	}
699	else {	688	else
700	/* If not on the active list, nothing needs to be done */	689	deactivate ();
701	if (!op->active_next && !op->active_prev && op!=active_objects)
702	return;
703
704	if (op->active_prev==NULL) {
705	active_objects = op->active_next;
706	if (op->active_next!=NULL)
707	op->active_next->active_prev = NULL;
708	}
709	else {
710	op->active_prev->active_next = op->active_next;
711	if (op->active_next)
712	op->active_next->active_prev = op->active_prev;
713	}
714	op->active_next = NULL;
715	op->active_prev = NULL;
716	}
717	}	690	}
718		691
719	/* This function removes object 'op' from the list of active
720	* objects.
721	* This should only be used for style maps or other such
722	* reference maps where you don't want an object that isn't
723	* in play chewing up cpu time getting processed.
724	* The reverse of this is to call update_ob_speed, which
725	* will do the right thing based on the speed of the object.
726	*/
727	void remove_from_active_list(object *op)
728	{
729	/* If not on the active list, nothing needs to be done */
730	if (!op->active_next && !op->active_prev && op!=active_objects)
731	return;
732
733	if (op->active_prev==NULL) {
734	active_objects = op->active_next;
735	if (op->active_next!=NULL)
736	op->active_next->active_prev = NULL;
737	}
738	else {
739	op->active_prev->active_next = op->active_next;
740	if (op->active_next)
741	op->active_next->active_prev = op->active_prev;
742	}
743	op->active_next = NULL;
744	op->active_prev = NULL;
745	}
746
747	/*	692	/*
748	* update_object() updates the array which represents the map.	693	* update_object() updates the the map.
749	* It takes into account invisible objects (and represent squares covered	694	* It takes into account invisible objects (and represent squares covered
750	* by invisible objects by whatever is below them (unless it's another	695	* by invisible objects by whatever is below them (unless it's another
751	* invisible object, etc...)	696	* invisible object, etc...)
752	* If the object being updated is beneath a player, the look-window	697	* If the object being updated is beneath a player, the look-window
753	* of that player is updated (this might be a suboptimal way of	698	* of that player is updated (this might be a suboptimal way of
754	* updating that window, though, since update_object() is called _often_)	699	* updating that window, though, since update_object() is called _often_)
755	*	700	*
756	* action is a hint of what the caller believes need to be done.	701	* action is a hint of what the caller believes need to be done.
757	* For example, if the only thing that has changed is the face (due to
758	* an animation), we don't need to call update_position until that actually
759	* comes into view of a player. OTOH, many other things, like addition/removal
760	* of walls or living creatures may need us to update the flags now.
761	* current action are:	702	* current action are:
762	* UP_OBJ_INSERT: op was inserted	703	* UP_OBJ_INSERT: op was inserted
763	* UP_OBJ_REMOVE: op was removed	704	* UP_OBJ_REMOVE: op was removed
764	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	705	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
765	* as that is easier than trying to look at what may have changed.	706	* as that is easier than trying to look at what may have changed.
766	* UP_OBJ_FACE: only the objects face has changed.	707	* UP_OBJ_FACE: only the objects face has changed.
767	*/	708	*/
768		709	void
769	void update_object(object *op, int action) {	710	update_object (object *op, int action)
770	int update_now=0, flags;	711	{
771	MoveType move_on, move_off, move_block, move_slow;	712	if (!op)
772		713	{
773	if (op == NULL) {
774	/* this should never happen */	714	/* this should never happen */
775	LOG(llevDebug,"update_object() called for NULL object.\n");	715	LOG (llevError | logBacktrace, "update_object() called for NULL object.\n");
776	return;	716	return;
777	}
778		717	}
779	if(op->env!=NULL) {	718
		719	if (!op->is_on_map ())
		720	{
780	/* Animation is currently handled by client, so nothing	721	/* Animation is currently handled by client, so nothing
781	* to do in this case.	722	* to do in this case.
782	*/	723	*/
783	return;	724	return;
784	}
785
786	/* If the map is saving, don't do anything as everything is
787	* going to get freed anyways.
788	*/
789	if (!op->map || op->map->in_memory == MAP_SAVING) return;
790		725	}
		726
791	/* make sure the object is within map boundaries */	727	/* make sure the object is within map boundaries */
792	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	728	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
793	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	729	{
794	LOG(llevError,"update_object() called for object out of map!\n");	730	LOG (llevError, "update_object() called for object out of map!\n");
795	#ifdef MANY_CORES	731	#ifdef MANY_CORES
796	abort();	732	abort ();
797	#endif	733	#endif
798	return;	734	return;
799	}
800		735	}
801	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
802	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
803	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
804	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
805	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
806	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
807		736
		737	mapspace &m = op->ms ();
		738
		739	if (!(m.flags_ & P_UPTODATE))
		740	/* nop */;
808	if (action == UP_OBJ_INSERT) {	741	else if (action == UP_OBJ_INSERT)
		742	{
		743	#if 0
		744	// this is likely overkill, TODO: revisit (schmorp)
809	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	745	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
810	update_now=1;
811
812	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	746	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
813	update_now=1;	747	|| (op->is_player () && !(m.flags_ & P_PLAYER))
814		748	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		749	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
815	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	750	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
816	update_now=1;	751	|| (m.move_on | op->move_on ) != m.move_on
817
818	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
819	update_now=1;
820
821	if ((move_on | op->move_on) != move_on) update_now=1;
822	if ((move_off | op->move_off) != move_off) update_now=1;	752	|| (m.move_off | op->move_off ) != m.move_off
		753	|| (m.move_slow | op->move_slow) != m.move_slow
823	/* This isn't perfect, but I don't expect a lot of objects to	754	/* This isn't perfect, but I don't expect a lot of objects to
824	* to have move_allow right now.	755	* have move_allow right now.
825	*/	756	*/
826	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	757	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
827	update_now=1;	758	m.invalidate ();
828	if ((move_slow | op->move_slow) != move_slow) update_now=1;	759	#else
		760	// the above is not strong enough a test to skip updating. los maybe? TODO (schmorp)
		761	m.invalidate ();
		762	#endif
829	}	763	}
830	/* if the object is being removed, we can't make intelligent	764	/* if the object is being removed, we can't make intelligent
831	* decisions, because remove_ob can't really pass the object	765	* decisions, because remove_ob can't really pass the object
832	* that is being removed.	766	* that is being removed.
833	*/	767	*/
834	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	768	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
835	update_now=1;	769	m.invalidate ();
836	} else if (action == UP_OBJ_FACE) {	770	else if (action == UP_OBJ_FACE)
837	/* Nothing to do for that case */	771	/* Nothing to do for that case */ ;
838	}
839	else {	772	else
840	LOG(llevError,"update_object called with invalid action: %d\n", action);	773	LOG (llevError, "update_object called with invalid action: %d\n", action);
841	}
842		774
843	if (update_now) {
844	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
845	update_position(op->map, op->x, op->y);
846	}
847
848	if(op->more!=NULL)	775	if (op->more)
849	update_object(op->more, action);	776	update_object (op->more, action);
850	}	777	}
851		778
852		779	object::object ()
853	/*
854	* free_object() frees everything allocated by an object, removes
855	* it from the list of used objects, and puts it on the list of
856	* free objects. The IS_FREED() flag is set in the object.
857	* The object must have been removed by remove_ob() first for
858	* this function to succeed.
859	*
860	* If free_inventory is set, free inventory as well. Else drop items in
861	* inventory to the ground.
862	*/
863
864	void
865	free_object (object * ob)
866	{	780	{
867	free_object2 (ob, 0);	781	SET_FLAG (this, FLAG_REMOVED);
868	}
869		782
870	void	783	//expmul = 1.0; declared const for the time being
871	free_object2 (object * ob, int free_inventory)	784	face = blank_face;
872	{	785	}
873	object *tmp, *op;
874		786
875	if (!QUERY_FLAG (ob, FLAG_REMOVED))	787	object::~object ()
876	{	788	{
877	LOG (llevDebug, "Free object called with non removed object\n");	789	unlink ();
878	dump_object (ob);	790
879	#ifdef MANY_CORES	791	free_key_values (this);
880	abort ();	792	}
881	#endif	793
		794	static int object_count;
		795
		796	void object::link ()
		797	{
		798	assert (!index);//D
		799	uuid = UUID::gen ();
		800	count = ++object_count;
		801
		802	refcnt_inc ();
		803	objects.insert (this);
		804	}
		805
		806	void object::unlink ()
		807	{
		808	if (!index)
		809	return;
		810
		811	objects.erase (this);
		812	refcnt_dec ();
		813	}
		814
		815	void
		816	object::activate ()
		817	{
		818	/* If already on active list, don't do anything */
		819	if (active)
		820	return;
		821
		822	if (has_active_speed ())
882	}	823	{
		824	if (flag [FLAG_FREED])
		825	LOG (llevError | logBacktrace, "BUG: tried to activate freed object %s\n", debug_desc ());//D
883		826
884	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	827	actives.insert (this);
885	{	828	}
886	LOG (llevMonster, "Warning: tried to free friendly object.\n");	829	}
		830
		831	void
		832	object::activate_recursive ()
		833	{
		834	activate ();
		835
		836	for (object *op = inv; op; op = op->below)
		837	op->activate_recursive ();
		838	}
		839
		840	/* This function removes object 'op' from the list of active
		841	* objects.
		842	* This should only be used for style maps or other such
		843	* reference maps where you don't want an object that isn't
		844	* in play chewing up cpu time getting processed.
		845	* The reverse of this is to call update_ob_speed, which
		846	* will do the right thing based on the speed of the object.
		847	*/
		848	void
		849	object::deactivate ()
		850	{
		851	/* If not on the active list, nothing needs to be done */
		852	if (!active)
		853	return;
		854
		855	actives.erase (this);
		856	}
		857
		858	void
		859	object::deactivate_recursive ()
		860	{
		861	for (object *op = inv; op; op = op->below)
		862	op->deactivate_recursive ();
		863
		864	deactivate ();
		865	}
		866
		867	void
		868	object::set_flag_inv (int flag, int value)
		869	{
		870	for (object *op = inv; op; op = op->below)
		871	{
		872	op->flag [flag] = value;
		873	op->set_flag_inv (flag, value);
		874	}
		875	}
		876
		877	/*
		878	* Remove and free all objects in the inventory of the given object.
		879	* object.c ?
		880	*/
		881	void
		882	object::destroy_inv (bool drop_to_ground)
		883	{
		884	// need to check first, because the checks below might segfault
		885	// as we might be on an invalid mapspace and crossfire code
		886	// is too buggy to ensure that the inventory is empty.
		887	// corollary: if you create arrows etc. with stuff in its inventory,
		888	// cf will crash below with off-map x and y
		889	if (!inv)
		890	return;
		891
		892	/* Only if the space blocks everything do we not process -
		893	* if some form of movement is allowed, let objects
		894	* drop on that space.
		895	*/
		896	if (!drop_to_ground
		897	|| !map
		898	|| map->in_memory != MAP_ACTIVE
		899	|| map->no_drop
		900	|| ms ().move_block == MOVE_ALL)
		901	{
		902	while (inv)
		903	inv->destroy ();
		904	}
		905	else
		906	{ /* Put objects in inventory onto this space */
		907	while (inv)
		908	{
		909	object *op = inv;
		910
		911	if (op->flag [FLAG_STARTEQUIP]
		912	|| op->flag [FLAG_NO_DROP]
		913	|| op->type == RUNE
		914	|| op->type == TRAP
		915	|| op->flag [FLAG_IS_A_TEMPLATE]
		916	|| op->flag [FLAG_DESTROY_ON_DEATH])
		917	op->destroy ();
		918	else
		919	map->insert (op, x, y);
		920	}
		921	}
		922	}
		923
		924	object *object::create ()
		925	{
		926	object *op = new object;
		927	op->link ();
		928	return op;
		929	}
		930
		931	static struct freed_map : maptile
		932	{
		933	freed_map ()
		934	{
		935	path = "<freed objects map>";
		936	name = "/internal/freed_objects_map";
		937	width = 3;
		938	height = 3;
		939	no_drop = 1;
		940	no_reset = 1;
		941
		942	alloc ();
		943	in_memory = MAP_ACTIVE;
		944	}
		945
		946	~freed_map ()
		947	{
		948	destroy ();
		949	}
		950	} freed_map; // freed objects are moved here to avoid crashes
		951
		952	void
		953	object::do_destroy ()
		954	{
		955	if (flag [FLAG_IS_LINKED])
		956	remove_link ();
		957
		958	if (flag [FLAG_FRIENDLY])
887	remove_friendly_object (ob);	959	remove_friendly_object (this);
		960
		961	remove ();
		962
		963	attachable::do_destroy ();
		964
		965	deactivate ();
		966	unlink ();
		967
		968	flag [FLAG_FREED] = 1;
		969
		970	// hack to ensure that freed objects still have a valid map
		971	map = &freed_map;
		972	x = 1;
		973	y = 1;
		974
		975	if (more)
888	}	976	{
889		977	more->destroy ();
890	if (QUERY_FLAG (ob, FLAG_FREED))	978	more = 0;
891	{	979	}
892	dump_object (ob);	980
893	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	981	head = 0;
		982
		983	// clear those pointers that likely might cause circular references
		984	owner = 0;
		985	enemy = 0;
		986	attacked_by = 0;
		987	current_weapon = 0;
		988	}
		989
		990	void
		991	object::destroy ()
		992	{
		993	if (destroyed ())
		994	return;
		995
		996	if (!is_head () && !head->destroyed ())
		997	{
		998	LOG (llevError | logBacktrace, "tried to destroy the tail of an object");
		999	head->destroy ();
894	return;	1000	return;
895	}	1001	}
896		1002
897	if (ob->more != NULL)	1003	destroy_inv (false);
898	{
899	free_object2 (ob->more, free_inventory);
900	ob->more = NULL;
901	}
902		1004
903	if (ob->inv)	1005	if (is_head ())
904	{	1006	if (sound_destroy)
905	/* Only if the space blocks everything do we not process -	1007	play_sound (sound_destroy);
906	* if some form of movement is allowed, let objects	1008	else if (flag [FLAG_MONSTER])
907	* drop on that space.	1009	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
908	*/
909	if (free_inventory || ob->map == NULL
910	|| ob->map->in_memory != MAP_IN_MEMORY
911	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))
912	{
913	op = ob->inv;
914		1010
915	while (op != NULL)	1011	attachable::destroy ();
916	{
917	tmp = op->below;
918	remove_ob (op);
919	free_object2 (op, free_inventory);
920	op = tmp;
921	}
922	}
923	else
924	{ /* Put objects in inventory onto this space */
925	op = ob->inv;
926
927	while (op != NULL)
928	{
929	tmp = op->below;
930	remove_ob (op);
931
932	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
933	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
934	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
935	free_object (op);
936	else
937	{
938	op->x = ob->x;
939	op->y = ob->y;
940	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
941	}
942
943	op = tmp;
944	}
945	}
946	}
947
948	/* Remove object from the active list */
949	ob->speed = 0;
950	update_ob_speed (ob);
951
952	SET_FLAG (ob, FLAG_FREED);
953	ob->count = 0;
954
955	/* Remove this object from the list of used objects */
956	if (ob->prev == NULL)
957	{
958	objects = ob->next;
959
960	if (objects != NULL)
961	objects->prev = NULL;
962	}
963	else
964	{
965	ob->prev->next = ob->next;
966
967	if (ob->next != NULL)
968	ob->next->prev = ob->prev;
969	}
970
971	free_key_values (ob);
972
973	/* Now link it with the free_objects list: */
974	ob->prev = 0;
975	ob->next = 0;
976
977	delete ob;
978	}	1012	}
979		1013
980	/*	1014	/* op->remove ():
981	* sub_weight() recursively (outwards) subtracts a number from the
982	* weight of an object (and what is carried by it's environment(s)).
983	*/
984
985	void sub_weight (object *op, signed long weight) {
986	while (op != NULL) {
987	if (op->type == CONTAINER) {
988	weight=(signed long)(weight*(100-op->stats.Str)/100);
989	}
990	op->carrying-=weight;
991	op = op->env;
992	}
993	}
994
995	/* remove_ob(op):
996	* This function removes the object op from the linked list of objects	1015	* This function removes the object op from the linked list of objects
997	* which it is currently tied to. When this function is done, the	1016	* which it is currently tied to. When this function is done, the
998	* object will have no environment. If the object previously had an	1017	* object will have no environment. If the object previously had an
999	* environment, the x and y coordinates will be updated to	1018	* environment, the x and y coordinates will be updated to
1000	* the previous environment.	1019	* the previous environment.
1001	* Beware: This function is called from the editor as well!
1002	*/	1020	*/
		1021	void
		1022	object::do_remove ()
		1023	{
		1024	if (flag [FLAG_REMOVED])
		1025	return;
1003		1026
1004	void remove_ob(object *op) {	1027	INVOKE_OBJECT (REMOVE, this);
1005	object *tmp,*last=NULL;
1006	object *otmp;
1007	tag_t tag;
1008	int check_walk_off;
1009	mapstruct *m;
1010	sint16 x,y;
1011
1012		1028
1013	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1029	flag [FLAG_REMOVED] = true;
1014	dump_object(op);
1015	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1016		1030
1017	/* Changed it to always dump core in this case. As has been learned	1031	if (more)
1018	* in the past, trying to recover from errors almost always	1032	more->remove ();
1019	* make things worse, and this is a real error here - something
1020	* that should not happen.
1021	* Yes, if this was a mission critical app, trying to do something
1022	* to recover may make sense, but that is because failure of the app
1023	* may have other disastrous problems. Cf runs out of a script
1024	* so is easily enough restarted without any real problems.
1025	* MSW 2001-07-01
1026	*/
1027	abort();
1028	}
1029	if(op->more!=NULL)
1030	remove_ob(op->more);
1031		1033
1032	SET_FLAG(op, FLAG_REMOVED);
1033
1034	/*	1034	/*
1035	* In this case, the object to be removed is in someones	1035	* In this case, the object to be removed is in someones
1036	* inventory.	1036	* inventory.
		1037	*/
		1038	if (env)
		1039	{
		1040	flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed
		1041	if (object *pl = visible_to ())
		1042	esrv_del_item (pl->contr, count);
		1043	flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed
		1044
		1045	adjust_weight (env, -total_weight ());
		1046
		1047	object *pl = in_player ();
		1048
		1049	/* we set up values so that it could be inserted into
		1050	* the map, but we don't actually do that - it is up
		1051	* to the caller to decide what we want to do.
1037	*/	1052	*/
1038	if(op->env!=NULL) {	1053	map = env->map;
1039	if(op->nrof)	1054	x = env->x;
1040	sub_weight(op->env, op->weight*op->nrof);	1055	y = env->y;
1041	else
1042	sub_weight(op->env, op->weight+op->carrying);
1043		1056
		1057	// make sure cmov optimisation is applicable
		1058	*(above ? &above->below : &env->inv) = below;
		1059	*(below ? &below->above : &above ) = above; // &above is just a dummy
		1060
		1061	above = 0;
		1062	below = 0;
		1063	env = 0;
		1064
1044	/* NO_FIX_PLAYER is set when a great many changes are being	1065	/* NO_FIX_PLAYER is set when a great many changes are being
1045	* made to players inventory. If set, avoiding the call	1066	* made to players inventory. If set, avoiding the call
1046	* to save cpu time.	1067	* to save cpu time.
1047	*/	1068	*/
1048	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1069	if (pl)
1049	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1070	if (pl->is_player () && (glow_radius || !QUERY_FLAG (pl, FLAG_NO_FIX_PLAYER)))
1050	fix_player(otmp);
1051
1052	if(op->above!=NULL)
1053	op->above->below=op->below;
1054	else
1055	op->env->inv=op->below;
1056
1057	if(op->below!=NULL)
1058	op->below->above=op->above;
1059
1060	/* we set up values so that it could be inserted into
1061	* the map, but we don't actually do that - it is up
1062	* to the caller to decide what we want to do.
1063	*/	1071	{
1064	op->x=op->env->x,op->y=op->env->y;	1072	pl->update_stats ();
1065	op->map=op->env->map;	1073
1066	op->above=NULL,op->below=NULL;	1074	if (glow_radius && pl->is_on_map ())
1067	op->env=NULL;	1075	update_all_los (pl->map, pl->x, pl->y);
		1076	}
		1077	}
		1078	else if (map)
		1079	{
		1080	map->dirty = true;
		1081	mapspace &ms = this->ms ();
		1082
		1083	if (object *pl = ms.player ())
		1084	{
		1085	if (is_player ())
		1086	{
		1087	if (!flag [FLAG_WIZPASS])
		1088	ms.smell = ++mapspace::smellcount; // remember the smell of the player
		1089
		1090	// leaving a spot always closes any open container on the ground
		1091	if (container && !container->env)
		1092	// this causes spurious floorbox updates, but it ensures
		1093	// that the CLOSE event is being sent.
		1094	close_container ();
		1095
		1096	--map->players;
		1097	map->touch ();
		1098	}
		1099	else if (pl->container_ () == this)
		1100	{
		1101	// removing a container should close it
		1102	close_container ();
		1103	}
		1104
		1105	esrv_del_item (pl->contr, count);
		1106	}
		1107
		1108	/* link the object above us */
		1109	// re-link, make sure compiler can easily use cmove
		1110	*(above ? &above->below : &ms.top) = below;
		1111	*(below ? &below->above : &ms.bot) = above;
		1112
		1113	above = 0;
		1114	below = 0;
		1115
		1116	ms.invalidate ();
		1117
		1118	if (map->in_memory == MAP_SAVING)
1068	return;	1119	return;
1069	}
1070		1120
1071	/* If we get here, we are removing it from a map */	1121	int check_walk_off = !flag [FLAG_NO_APPLY];
1072	if (op->map == NULL) return;
1073		1122
1074	x = op->x;	1123	if (object *pl = ms.player ())
1075	y = op->y;
1076	m = get_map_from_coord(op->map, &x, &y);
1077
1078	if (!m) {
1079	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1080	op->map->path, op->x, op->y);
1081	/* in old days, we used to set x and y to 0 and continue.
1082	* it seems if we get into this case, something is probablye
1083	* screwed up and should be fixed.
1084	*/
1085	abort();
1086	}
1087	if (op->map != m) {
1088	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1089	op->map->path, m->path, op->x, op->y, x, y);
1090	}
1091
1092	/* Re did the following section of code - it looks like it had
1093	* lots of logic for things we no longer care about
1094	*/
1095
1096	/* link the object above us */
1097	if (op->above)
1098	op->above->below=op->below;
1099	else
1100	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1101
1102	/* Relink the object below us, if there is one */
1103	if(op->below) {
1104	op->below->above=op->above;
1105	} else {
1106	/* Nothing below, which means we need to relink map object for this space
1107	* use translated coordinates in case some oddness with map tiling is
1108	* evident
1109	*/
1110	if(GET_MAP_OB(m,x,y)!=op) {
1111	dump_object(op);
1112	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);
1113	dump_object(GET_MAP_OB(m,x,y));
1114	LOG(llevError,"%s\n",errmsg);
1115	}	1124	{
1116	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1125	if (pl->container_ () == this)
1117	}
1118	op->above=NULL;
1119	op->below=NULL;
1120
1121	if (op->map->in_memory == MAP_SAVING)
1122	return;
1123
1124	tag = op->count;
1125	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1126	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1127	/* No point updating the players look faces if he is the object
1128	* being removed.
1129	*/
1130
1131	if(tmp->type==PLAYER && tmp!=op) {
1132	/* If a container that the player is currently using somehow gets	1126	/* If a container that the player is currently using somehow gets
1133	* removed (most likely destroyed), update the player view	1127	* removed (most likely destroyed), update the player view
1134	* appropriately.	1128	* appropriately.
1135	*/	1129	*/
1136	if (tmp->container==op) {	1130	pl->close_container ();
1137	CLEAR_FLAG(op, FLAG_APPLIED);	1131
1138	tmp->container=NULL;	1132	//TODO: the floorbox prev/next might need updating
1139	}	1133	//esrv_del_item (pl->contr, count);
1140	tmp->contr->socket.update_look=1;	1134	//TODO: update floorbox to preserve ordering
		1135	if (pl->contr->ns)
		1136	pl->contr->ns->floorbox_update ();
1141	}	1137	}
		1138
		1139	if (check_walk_off)
		1140	for (object *above, *tmp = ms.bot; tmp; tmp = above)
		1141	{
		1142	above = tmp->above;
		1143
		1144	/* No point updating the players look faces if he is the object
		1145	* being removed.
		1146	*/
		1147
1142	/* See if player moving off should effect something */	1148	/* See if object moving off should effect something */
1143	if (check_walk_off && ((op->move_type & tmp->move_off) &&	1149	if ((move_type & tmp->move_off)
1144	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {	1150	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0)
1145
1146	move_apply(tmp, op, NULL);	1151	move_apply (tmp, this, 0);
1147	if (was_destroyed (op, tag)) {
1148	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1149	"leaving object\n", &tmp->name, &tmp->arch->name);
1150	}	1152	}
1151	}
1152		1153
1153	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */	1154	if (affects_los ())
1154
1155	if(tmp->above == tmp)
1156	tmp->above = NULL;
1157	last=tmp;
1158	}
1159	/* last == NULL of there are no objects on this space */
1160	if (last==NULL) {
1161	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,
1162	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures
1163	* those out anyways, and if there are any flags set right now, they won't
1164	* be correct anyways.
1165	*/
1166	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1167	update_position(op->map, op->x, op->y);
1168	}
1169	else
1170	update_object(last, UP_OBJ_REMOVE);
1171
1172	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))
1173	update_all_los(op->map, op->x, op->y);	1155	update_all_los (map, x, y);
1174		1156	}
1175	}	1157	}
1176		1158
1177	/*	1159	/*
1178	* merge_ob(op,top):	1160	* merge_ob(op,top):
1179	*	1161	*
1180	* This function goes through all objects below and including top, and	1162	* This function goes through all objects below and including top, and
1181	* merges op to the first matching object.	1163	* merges op to the first matching object.
1182	* If top is NULL, it is calculated.	1164	* If top is NULL, it is calculated.
1183	* Returns pointer to object if it succeded in the merge, otherwise NULL	1165	* Returns pointer to object if it succeded in the merge, otherwise NULL
1184	*/	1166	*/
1185		1167	object *
1186	object *merge_ob(object *op, object *top) {	1168	merge_ob (object *op, object *top)
		1169	{
1187	if(!op->nrof)	1170	if (!op->nrof)
1188	return 0;	1171	return 0;
1189	if(top==NULL)	1172
		1173	if (!top)
1190	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1174	for (top = op; top && top->above; top = top->above)
		1175	;
		1176
1191	for(;top!=NULL;top=top->below) {	1177	for (; top; top = top->below)
1192	if(top==op)	1178	if (object::can_merge (op, top))
1193	continue;
1194	if (CAN_MERGE(op,top))
1195	{	1179	{
1196	top->nrof+=op->nrof;	1180	top->nrof += op->nrof;
1197	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1181
1198	op->weight = 0; /* Don't want any adjustements now */	1182	if (object *pl = top->visible_to ())
1199	remove_ob(op);	1183	esrv_update_item (UPD_NROF, pl, top);
1200	free_object(op);	1184
		1185	op->weight = 0; // cancel the addition above
		1186	op->carrying = 0; // must be 0 already
		1187
		1188	op->destroy ();
		1189
1201	return top;	1190	return top;
1202	}	1191	}
1203	}	1192
1204	return NULL;	1193	return 0;
1205	}	1194	}
1206		1195
		1196	void
		1197	object::expand_tail ()
		1198	{
		1199	if (more)
		1200	return;
		1201
		1202	object *prev = this;
		1203
		1204	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1205	{
		1206	object *op = arch_to_object (at);
		1207
		1208	op->name = name;
		1209	op->name_pl = name_pl;
		1210	op->title = title;
		1211
		1212	op->head = this;
		1213	prev->more = op;
		1214
		1215	prev = op;
		1216	}
		1217	}
		1218
1207	/*	1219	/*
1208	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1220	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1209	* job preparing multi-part monsters	1221	* job preparing multi-part monsters.
1210	*/	1222	*/
		1223	object *
1211	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1224	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1212	object* tmp;	1225	{
1213	if (op->head)	1226	op->remove ();
1214	op=op->head;	1227
1215	for (tmp=op;tmp;tmp=tmp->more){	1228	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
		1229	{
1216	tmp->x=x+tmp->arch->clone.x;	1230	tmp->x = x + tmp->arch->x;
1217	tmp->y=y+tmp->arch->clone.y;	1231	tmp->y = y + tmp->arch->y;
1218	}	1232	}
		1233
1219	return insert_ob_in_map (op, m, originator, flag);	1234	return insert_ob_in_map (op, m, originator, flag);
1220	}	1235	}
1221		1236
1222	/*	1237	/*
1223	* insert_ob_in_map (op, map, originator, flag):	1238	* insert_ob_in_map (op, map, originator, flag):
1224	* This function inserts the object in the two-way linked list	1239	* This function inserts the object in the two-way linked list
…		…
1237	* Return value:	1252	* Return value:
1238	* new object if 'op' was merged with other object	1253	* new object if 'op' was merged with other object
1239	* NULL if 'op' was destroyed	1254	* NULL if 'op' was destroyed
1240	* just 'op' otherwise	1255	* just 'op' otherwise
1241	*/	1256	*/
1242		1257	object *
1243	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1258	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1244	{	1259	{
1245	object *tmp, *top, *floor=NULL;	1260	op->remove ();
1246	sint16 x,y;
1247		1261
1248	if (QUERY_FLAG (op, FLAG_FREED)) {	1262	if (m == &freed_map)//D TODO: remove soon
1249	LOG (llevError, "Trying to insert freed object!\n");	1263	{//D
1250	return NULL;	1264	LOG (llevError | logBacktrace, "tries to insret object on freed objects map: %s", op->debug_desc ());//D
		1265	}//D
		1266
		1267	/* Ideally, the caller figures this out. However, it complicates a lot
		1268	* of areas of callers (eg, anything that uses find_free_spot would now
		1269	* need extra work
		1270	*/
		1271	maptile *newmap = m;
		1272	if (!xy_normalise (newmap, op->x, op->y))
1251	}	1273	{
1252	if(m==NULL) {	1274	op->head_ ()->destroy ();// remove head_ once all tail object destroyers found
1253	dump_object(op);
1254	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1255	return op;	1275	return 0;
1256	}	1276	}
1257	if(out_of_map(m,op->x,op->y)) {	1277
1258	dump_object(op);	1278	if (object *more = op->more)
1259	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);	1279	if (!insert_ob_in_map (more, m, originator, flag))
1260	#ifdef MANY_CORES
1261	/* Better to catch this here, as otherwise the next use of this object
1262	* is likely to cause a crash. Better to find out where it is getting
1263	* improperly inserted.
1264	*/
1265	abort();
1266	#endif
1267	return op;	1280	return 0;
1268	}
1269	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1270	dump_object(op);
1271	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1272	return op;
1273	}
1274	if(op->more!=NULL) {
1275	/* The part may be on a different map. */
1276		1281
1277	object *more = op->more;	1282	op->flag [FLAG_REMOVED] = false;
		1283	op->env = 0;
		1284	op->map = newmap;
1278		1285
1279	/* We really need the caller to normalize coordinates - if	1286	mapspace &ms = op->ms ();
1280	* we set the map, that doesn't work if the location is within	1287
1281	* a map and this is straddling an edge. So only if coordinate	1288	/* this has to be done after we translate the coordinates.
1282	* is clear wrong do we normalize it.	1289	*/
		1290	if (op->nrof && !(flag & INS_NO_MERGE))
		1291	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1292	if (object::can_merge (op, tmp))
1283	*/	1293	{
1284	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {	1294	// TODO: we actually want to update tmp, not op,
1285	more->map = get_map_from_coord(m, &more->x, &more->y);	1295	// but some caller surely breaks when we return tmp
1286	} else if (!more->map) {	1296	// from here :/
1287	/* For backwards compatibility - when not dealing with tiled maps,	1297	op->nrof += tmp->nrof;
1288	* more->map should always point to the parent.	1298	tmp->destroy ();
1289	*/
1290	more->map = m;
1291	}	1299	}
1292		1300
1293	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {	1301	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
1294	if ( ! op->head)	1302	CLEAR_FLAG (op, FLAG_INV_LOCKED);
1295	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");	1303
1296	return NULL;	1304	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1305	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1306
		1307	if (flag & INS_BELOW_ORIGINATOR)
		1308	{
		1309	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1310	{
		1311	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1312	abort ();
1297	}	1313	}
		1314
		1315	if (!originator->is_on_map ())
		1316	{
		1317	LOG (llevError, "insert_ob_in_map(%s) called with INS_BELOW_ORIGINATOR when originator '%s' not on map",
		1318	op->debug_desc (), originator->debug_desc ());
		1319	abort ();
		1320	}
		1321
		1322	op->above = originator;
		1323	op->below = originator->below;
		1324	originator->below = op;
		1325
		1326	*(op->below ? &op->below->above : &ms.bot) = op;
		1327	}
		1328	else
1298	}	1329	{
1299	CLEAR_FLAG(op,FLAG_REMOVED);	1330	object *floor = 0;
		1331	object *top = ms.top;
1300		1332
1301	/* Ideally, the caller figures this out. However, it complicates a lot	1333	/* If there are other objects, then */
1302	* of areas of callers (eg, anything that uses find_free_spot would now	1334	if (top)
1303	* need extra work	1335	{
1304	*/	1336	/*
1305	op->map=get_map_from_coord(m, &op->x, &op->y);	1337	* If there are multiple objects on this space, we do some trickier handling.
1306	x = op->x;	1338	* We've already dealt with merging if appropriate.
1307	y = op->y;	1339	* Generally, we want to put the new object on top. But if
		1340	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1341	* floor, we want to insert above that and no further.
		1342	* Also, if there are spell objects on this space, we stop processing
		1343	* once we get to them. This reduces the need to traverse over all of
		1344	* them when adding another one - this saves quite a bit of cpu time
		1345	* when lots of spells are cast in one area. Currently, it is presumed
		1346	* that flying non pickable objects are spell objects.
		1347	*/
		1348	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		1349	{
		1350	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) || QUERY_FLAG (tmp, FLAG_OVERLAY_FLOOR))
		1351	floor = tmp;
1308		1352
1309	/* this has to be done after we translate the coordinates.	1353	if (QUERY_FLAG (tmp, FLAG_NO_PICK) && (tmp->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1310	*/	1354	{
1311	if(op->nrof && !(flag & INS_NO_MERGE)) {	1355	/* We insert above top, so we want this object below this */
1312	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1356	top = tmp->below;
1313	if (CAN_MERGE(op,tmp)) {	1357	break;
1314	op->nrof+=tmp->nrof;	1358	}
1315	remove_ob(tmp);	1359
1316	free_object(tmp);	1360	top = tmp;
1317	}	1361	}
1318	}
1319		1362
1320	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1363	/* We let update_position deal with figuring out what the space
1321	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1364	* looks like instead of lots of conditions here.
1322	if (!QUERY_FLAG(op, FLAG_ALIVE))	1365	* makes things faster, and effectively the same result.
1323	CLEAR_FLAG(op, FLAG_NO_STEAL);	1366	*/
1324		1367
1325	if (flag & INS_BELOW_ORIGINATOR) {	1368	/* Have object 'fall below' other objects that block view.
1326	if (originator->map != op->map || originator->x != op->x ||	1369	* Unless those objects are exits.
1327	originator->y != op->y) {	1370	* If INS_ON_TOP is used, don't do this processing
1328	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");	1371	* Need to find the object that in fact blocks view, otherwise
1329	abort();	1372	* stacking is a bit odd.
		1373	*/
		1374	if (!(flag & INS_ON_TOP)
		1375	&& ms.flags () & P_BLOCKSVIEW
		1376	&& (op->face && !faces [op->face].visibility))
		1377	{
		1378	object *last;
		1379
		1380	for (last = top; last != floor; last = last->below)
		1381	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1382	break;
		1383
		1384	/* Check to see if we found the object that blocks view,
		1385	* and make sure we have a below pointer for it so that
		1386	* we can get inserted below this one, which requires we
		1387	* set top to the object below us.
		1388	*/
		1389	if (last && last->below && last != floor)
		1390	top = last->below;
		1391	}
		1392	} /* If objects on this space */
		1393
		1394	if (flag & INS_ABOVE_FLOOR_ONLY)
		1395	top = floor;
		1396
		1397	// insert object above top, or bottom-most if top = 0
		1398	if (!top)
		1399	{
		1400	op->below = 0;
		1401	op->above = ms.bot;
		1402	ms.bot = op;
		1403
		1404	*(op->above ? &op->above->below : &ms.top) = op;
1330	}	1405	}
1331	op->above = originator;
1332	op->below = originator->below;
1333	if (op->below) op->below->above = op;
1334	else SET_MAP_OB(op->map, op->x, op->y, op);
1335	/* since *below* originator, no need to update top */
1336	originator->below = op;
1337	} else {	1406	else
1338	/* If there are other objects, then */
1339	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1340	object *last=NULL;
1341	/*
1342	* If there are multiple objects on this space, we do some trickier handling.
1343	* We've already dealt with merging if appropriate.
1344	* Generally, we want to put the new object on top. But if
1345	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
1346	* floor, we want to insert above that and no further.
1347	* Also, if there are spell objects on this space, we stop processing
1348	* once we get to them. This reduces the need to traverse over all of
1349	* them when adding another one - this saves quite a bit of cpu time
1350	* when lots of spells are cast in one area. Currently, it is presumed
1351	* that flying non pickable objects are spell objects.
1352	*/
1353
1354	while (top != NULL) {
1355	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1356	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1357	if (QUERY_FLAG(top, FLAG_NO_PICK)
1358	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1359	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1360	{
1361	/* We insert above top, so we want this object below this */
1362	top=top->below;
1363	break;
1364	}
1365	last = top;
1366	top = top->above;
1367	}
1368	/* Don't want top to be NULL, so set it to the last valid object */
1369	top = last;
1370
1371	/* We let update_position deal with figuring out what the space
1372	* looks like instead of lots of conditions here.
1373	* makes things faster, and effectively the same result.
1374	*/
1375
1376	/* Have object 'fall below' other objects that block view.
1377	* Unless those objects are exits, type 66
1378	* If INS_ON_TOP is used, don't do this processing
1379	* Need to find the object that in fact blocks view, otherwise
1380	* stacking is a bit odd.
1381	*/
1382	if (!(flag & INS_ON_TOP) &&
1383	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1384	(op->face && !op->face->visibility)) {
1385	for (last=top; last != floor; last=last->below)
1386	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1387	/* Check to see if we found the object that blocks view,
1388	* and make sure we have a below pointer for it so that
1389	* we can get inserted below this one, which requires we
1390	* set top to the object below us.
1391	*/
1392	if (last && last->below && last != floor) top=last->below;
1393	}
1394	} /* If objects on this space */
1395	if (flag & INS_MAP_LOAD)
1396	top = GET_MAP_TOP(op->map,op->x,op->y);
1397	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;
1398
1399	/* Top is the object that our object (op) is going to get inserted above.
1400	*/	1407	{
1401
1402	/* First object on this space */
1403	if (!top) {
1404	op->above = GET_MAP_OB(op->map, op->x, op->y);
1405	if (op->above) op->above->below = op;
1406	op->below = NULL;
1407	SET_MAP_OB(op->map, op->x, op->y, op);
1408	} else { /* get inserted into the stack above top */
1409	op->above = top->above;	1408	op->above = top->above;
1410	if (op->above) op->above->below = op;
1411	op->below = top;
1412	top->above = op;	1409	top->above = op;
		1410
		1411	op->below = top;
		1412	*(op->above ? &op->above->below : &ms.top) = op;
1413	}	1413	}
1414	if (op->above==NULL)	1414	}
1415	SET_MAP_TOP(op->map,op->x, op->y, op);
1416	} /* else not INS_BELOW_ORIGINATOR */
1417		1415
1418	if(op->type==PLAYER)	1416	if (op->is_player ())
		1417	{
1419	op->contr->do_los=1;	1418	op->contr->do_los = 1;
		1419	++op->map->players;
		1420	op->map->touch ();
		1421	}
1420		1422
1421	/* If we have a floor, we know the player, if any, will be above	1423	op->map->dirty = true;
1422	* it, so save a few ticks and start from there.
1423	*/
1424	if (!(flag & INS_MAP_LOAD))
1425	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1426	if (tmp->type == PLAYER)
1427	tmp->contr->socket.update_look=1;
1428	}
1429		1424
		1425	if (object *pl = ms.player ())
		1426	//TODO: the floorbox prev/next might need updating
		1427	//esrv_send_item (pl, op);
		1428	//TODO: update floorbox to preserve ordering
		1429	if (pl->contr->ns)
		1430	pl->contr->ns->floorbox_update ();
		1431
1430	/* If this object glows, it may affect lighting conditions that are	1432	/* If this object glows, it may affect lighting conditions that are
1431	* visible to others on this map. But update_all_los is really	1433	* visible to others on this map. But update_all_los is really
1432	* an inefficient way to do this, as it means los for all players	1434	* an inefficient way to do this, as it means los for all players
1433	* on the map will get recalculated. The players could very well	1435	* on the map will get recalculated. The players could very well
1434	* be far away from this change and not affected in any way -	1436	* be far away from this change and not affected in any way -
1435	* this should get redone to only look for players within range,	1437	* this should get redone to only look for players within range,
1436	* or just updating the P_NEED_UPDATE for spaces within this area	1438	* or just updating the P_UPTODATE for spaces within this area
1437	* of effect may be sufficient.	1439	* of effect may be sufficient.
1438	*/	1440	*/
1439	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1441	if (op->affects_los ())
		1442	{
		1443	op->ms ().invalidate ();
1440	update_all_los(op->map, op->x, op->y);	1444	update_all_los (op->map, op->x, op->y);
		1445	}
1441		1446
1442
1443	/* updates flags (blocked, alive, no magic, etc) for this map space */	1447	/* updates flags (blocked, alive, no magic, etc) for this map space */
1444	update_object(op,UP_OBJ_INSERT);	1448	update_object (op, UP_OBJ_INSERT);
1445		1449
		1450	INVOKE_OBJECT (INSERT, op);
1446		1451
1447	/* Don't know if moving this to the end will break anything. However,	1452	/* Don't know if moving this to the end will break anything. However,
1448	* we want to have update_look set above before calling this.	1453	* we want to have floorbox_update called before calling this.
1449	*	1454	*
1450	* check_move_on() must be after this because code called from	1455	* check_move_on() must be after this because code called from
1451	* check_move_on() depends on correct map flags (so functions like	1456	* check_move_on() depends on correct map flags (so functions like
1452	* blocked() and wall() work properly), and these flags are updated by	1457	* blocked() and wall() work properly), and these flags are updated by
1453	* update_object().	1458	* update_object().
1454	*/	1459	*/
1455		1460
1456	/* if this is not the head or flag has been passed, don't check walk on status */	1461	/* if this is not the head or flag has been passed, don't check walk on status */
1457
1458	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1462	if (!(flag & INS_NO_WALK_ON) && op->is_head ())
		1463	{
1459	if (check_move_on(op, originator))	1464	if (check_move_on (op, originator))
1460	return NULL;	1465	return 0;
1461		1466
1462	/* If we are a multi part object, lets work our way through the check	1467	/* If we are a multi part object, lets work our way through the check
1463	* walk on's.	1468	* walk on's.
1464	*/	1469	*/
1465	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1470	for (object *tmp = op->more; tmp; tmp = tmp->more)
1466	if (check_move_on (tmp, originator))	1471	if (check_move_on (tmp, originator))
1467	return NULL;	1472	return 0;
1468	}	1473	}
		1474
1469	return op;	1475	return op;
1470	}	1476	}
1471		1477
1472	/* this function inserts an object in the map, but if it	1478	/* this function inserts an object in the map, but if it
1473	* finds an object of its own type, it'll remove that one first.	1479	* finds an object of its own type, it'll remove that one first.
1474	* op is the object to insert it under: supplies x and the map.	1480	* op is the object to insert it under: supplies x and the map.
1475	*/	1481	*/
1476	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1482	void
1477	object *tmp;	1483	replace_insert_ob_in_map (shstr_tmp archname, object *op)
1478	object *tmp1;	1484	{
1479
1480	/* first search for itself and remove any old instances */	1485	/* first search for itself and remove any old instances */
1481		1486
1482	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1487	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1483	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1488	if (tmp->arch->archname == archname) /* same archetype */
1484	remove_ob(tmp);	1489	tmp->destroy ();
1485	free_object(tmp);
1486	}
1487	}
1488		1490
1489	tmp1=arch_to_object(find_archetype(arch_string));	1491	object *tmp = arch_to_object (archetype::find (archname));
1490		1492
1491		1493	tmp->x = op->x;
1492	tmp1->x = op->x; tmp1->y = op->y;	1494	tmp->y = op->y;
		1495
1493	insert_ob_in_map(tmp1,op->map,op,0);	1496	insert_ob_in_map (tmp, op->map, op, 0);
1494	}
1495
1496	/*
1497	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1498	* is returned contains nr objects, and the remaining parts contains
1499	* the rest (or is removed and freed if that number is 0).
1500	* On failure, NULL is returned, and the reason put into the
1501	* global static errmsg array.
1502	*/
1503
1504	object *get_split_ob(object *orig_ob, uint32 nr) {
1505	object *newob;
1506	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);
1507
1508	if(orig_ob->nrof<nr) {
1509	sprintf(errmsg,"There are only %d %ss.",
1510	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1511	return NULL;
1512	}
1513	newob = object_create_clone(orig_ob);
1514	if((orig_ob->nrof-=nr)<1) {
1515	if ( ! is_removed)
1516	remove_ob(orig_ob);
1517	free_object2(orig_ob, 1);
1518	}
1519	else if ( ! is_removed) {
1520	if(orig_ob->env!=NULL)
1521	sub_weight (orig_ob->env,orig_ob->weight*nr);
1522	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1523	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1524	LOG(llevDebug,
1525	"Error, Tried to split object whose map is not in memory.\n");
1526	return NULL;
1527	}
1528	}
1529	newob->nrof=nr;
1530
1531	return newob;
1532	}	1497	}
1533		1498
		1499	object *
		1500	object::insert_at (object *where, object *originator, int flags)
		1501	{
		1502	if (where->env)
		1503	return where->env->insert (this);
		1504	else
		1505	return where->map->insert (this, where->x, where->y, originator, flags);
		1506	}
		1507
1534	/*	1508	/*
1535	* decrease_ob_nr(object, number) decreases a specified number from	1509	* decrease(object, number) decreases a specified number from
1536	* the amount of an object. If the amount reaches 0, the object	1510	* the amount of an object. If the amount reaches 0, the object
1537	* is subsequently removed and freed.	1511	* is subsequently removed and freed.
1538	*	1512	*
1539	* Return value: 'op' if something is left, NULL if the amount reached 0	1513	* Return value: 'op' if something is left, NULL if the amount reached 0
1540	*/	1514	*/
1541		1515	bool
1542	object *decrease_ob_nr (object *op, uint32 i)	1516	object::decrease (sint32 nr)
1543	{	1517	{
1544	object *tmp;	1518	if (!nr)
1545	player *pl;	1519	return true;
1546		1520
1547	if (i == 0) /* objects with op->nrof require this check */	1521	nr = min (nr, nrof);
		1522
		1523	if (nrof > nr)
		1524	{
		1525	nrof -= nr;
		1526	adjust_weight (env, -weight * max (1, nr)); // carrying == 0
		1527
		1528	if (object *pl = visible_to ())
		1529	esrv_update_item (UPD_NROF, pl, this);
		1530
		1531	return true;
		1532	}
		1533	else
		1534	{
		1535	destroy ();
		1536	return false;
		1537	}
		1538	}
		1539
		1540	/*
		1541	* split(ob,nr) splits up ob into two parts. The part which
		1542	* is returned contains nr objects, and the remaining parts contains
		1543	* the rest (or is removed and returned if that number is 0).
		1544	* On failure, NULL is returned.
		1545	*/
		1546	object *
		1547	object::split (sint32 nr)
		1548	{
		1549	int have = number_of ();
		1550
		1551	if (have < nr)
		1552	return 0;
		1553	else if (have == nr)
		1554	{
		1555	remove ();
		1556	return this;
		1557	}
		1558	else
		1559	{
		1560	decrease (nr);
		1561
		1562	object *op = deep_clone ();
		1563	op->nrof = nr;
1548	return op;	1564	return op;
1549
1550	if (i > op->nrof)
1551	i = op->nrof;
1552
1553	if (QUERY_FLAG (op, FLAG_REMOVED))
1554	{	1565	}
1555	op->nrof -= i;	1566	}
		1567
		1568	object *
		1569	insert_ob_in_ob (object *op, object *where)
		1570	{
		1571	if (!where)
1556	}	1572	{
1557	else if (op->env != NULL)	1573	char *dump = dump_object (op);
1558	{	1574	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1559	/* is this object in the players inventory, or sub container	1575	free (dump);
1560	* therein?
1561	*/
1562	tmp = is_player_inv (op->env);
1563	/* nope. Is this a container the player has opened?
1564	* If so, set tmp to that player.
1565	* IMO, searching through all the players will mostly
1566	* likely be quicker than following op->env to the map,
1567	* and then searching the map for a player.
1568	*/
1569	if (!tmp) {
1570	for (pl=first_player; pl; pl=pl->next)
1571	if (pl->ob->container == op->env) break;
1572	if (pl) tmp=pl->ob;
1573	else tmp=NULL;
1574	}
1575
1576	if (i < op->nrof) {
1577	sub_weight (op->env, op->weight * i);
1578	op->nrof -= i;
1579	if (tmp) {
1580	esrv_send_item(tmp, op);
1581	}
1582	} else {
1583	remove_ob (op);
1584	op->nrof = 0;
1585	if (tmp) {
1586	esrv_del_item(tmp->contr, op->count);
1587	}
1588	}
1589	}
1590	else
1591	{
1592	object *above = op->above;
1593
1594	if (i < op->nrof) {
1595	op->nrof -= i;
1596	} else {
1597	remove_ob (op);
1598	op->nrof = 0;
1599	}
1600	/* Since we just removed op, op->above is null */
1601	for (tmp = above; tmp != NULL; tmp = tmp->above)
1602	if (tmp->type == PLAYER) {
1603	if (op->nrof)
1604	esrv_send_item(tmp, op);
1605	else
1606	esrv_del_item(tmp->contr, op->count);
1607	}
1608	}
1609
1610	if (op->nrof) {
1611	return op;	1576	return op;
1612	} else {	1577	}
1613	free_object (op);	1578
1614	return NULL;	1579	if (where->head_ () != where)
1615	}	1580	{
1616	}	1581	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1617		1582	where = where->head;
1618	/*
1619	* add_weight(object, weight) adds the specified weight to an object,
1620	* and also updates how much the environment(s) is/are carrying.
1621	*/
1622
1623	void add_weight (object *op, signed long weight) {
1624	while (op!=NULL) {
1625	if (op->type == CONTAINER) {
1626	weight=(signed long)(weight*(100-op->stats.Str)/100);
1627	}
1628	op->carrying+=weight;
1629	op=op->env;
1630	}	1583	}
1631	}
1632		1584
		1585	return where->insert (op);
		1586	}
		1587
1633	/*	1588	/*
1634	* insert_ob_in_ob(op,environment):	1589	* env->insert (op)
1635	* This function inserts the object op in the linked list	1590	* This function inserts the object op in the linked list
1636	* inside the object environment.	1591	* inside the object environment.
1637	*	1592	*
1638	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1639	* the inventory at the last position or next to other objects of the same
1640	* type.
1641	* Frank: Now sorted by type, archetype and magic!
1642	*
1643	* The function returns now pointer to inserted item, and return value can	1593	* The function returns now pointer to inserted item, and return value can
1644	* be != op, if items are merged. -Tero	1594	* be != op, if items are merged. -Tero
1645	*/	1595	*/
1646		1596	object *
1647	object *insert_ob_in_ob(object *op,object *where) {	1597	object::insert (object *op)
1648	object *tmp, *otmp;	1598	{
1649
1650	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1651	dump_object(op);
1652	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1653	return op;
1654	}
1655	if(where==NULL) {
1656	dump_object(op);
1657	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1658	return op;
1659	}
1660	if (where->head) {
1661	LOG(llevDebug,
1662	"Warning: Tried to insert object wrong part of multipart object.\n");
1663	where = where->head;
1664	}
1665	if (op->more) {	1599	if (op->more)
		1600	{
1666	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1601	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1667	&op->name, op->count);
1668	return op;	1602	return op;
1669	}	1603	}
1670	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1604
1671	CLEAR_FLAG(op, FLAG_REMOVED);	1605	op->remove ();
		1606
		1607	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1608
1672	if(op->nrof) {	1609	if (op->nrof)
1673	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1610	for (object *tmp = inv; tmp; tmp = tmp->below)
1674	if ( CAN_MERGE(tmp,op) ) {	1611	if (object::can_merge (tmp, op))
		1612	{
1675	/* return the original object and remove inserted object	1613	/* return the original object and remove inserted object
1676	(client needs the original object) */	1614	(client needs the original object) */
1677	tmp->nrof += op->nrof;	1615	tmp->nrof += op->nrof;
1678	/* Weight handling gets pretty funky. Since we are adding to	1616
1679	* tmp->nrof, we need to increase the weight.	1617	if (object *pl = tmp->visible_to ())
1680	*/	1618	esrv_update_item (UPD_NROF, pl, tmp);
1681	add_weight (where, op->weight*op->nrof);	1619
1682	SET_FLAG(op, FLAG_REMOVED);	1620	adjust_weight (this, op->total_weight ());
1683	free_object(op); /* free the inserted object */	1621
		1622	op->destroy ();
1684	op = tmp;	1623	op = tmp;
1685	remove_ob (op); /* and fix old object's links */	1624	goto inserted;
1686	CLEAR_FLAG(op, FLAG_REMOVED);
1687	break;
1688	}	1625	}
1689		1626
1690	/* I assume combined objects have no inventory	1627	op->owner = 0; // it's his/hers now. period.
1691	* We add the weight - this object could have just been removed	1628	op->map = 0;
1692	* (if it was possible to merge). calling remove_ob will subtract	1629	op->x = 0;
1693	* the weight, so we need to add it in again, since we actually do	1630	op->y = 0;
1694	* the linking below
1695	*/
1696	add_weight (where, op->weight*op->nrof);
1697	} else
1698	add_weight (where, (op->weight+op->carrying));
1699		1631
1700	otmp=is_player_inv(where);
1701	if (otmp&&otmp->contr!=NULL) {
1702	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1703	fix_player(otmp);
1704	}
1705
1706	op->map=NULL;
1707	op->env=where;
1708	op->above=NULL;	1632	op->above = 0;
1709	op->below=NULL;	1633	op->below = inv;
1710	op->x=0,op->y=0;	1634	op->env = this;
1711		1635
		1636	if (inv)
		1637	inv->above = op;
		1638
		1639	inv = op;
		1640
		1641	op->flag [FLAG_REMOVED] = 0;
		1642
		1643	if (object *pl = op->visible_to ())
		1644	esrv_send_item (pl, op);
		1645
		1646	adjust_weight (this, op->total_weight ());
		1647
		1648	inserted:
1712	/* reset the light list and los of the players on the map */	1649	/* reset the light list and los of the players on the map */
1713	if((op->glow_radius!=0)&&where->map)	1650	if (op->glow_radius && is_on_map ())
1714	{	1651	{
1715	#ifdef DEBUG_LIGHTS	1652	update_stats ();
1716	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",	1653	update_all_los (map, x, y);
1717	op->name);
1718	#endif /* DEBUG_LIGHTS */
1719	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1720	}	1654	}
		1655	else if (is_player () && !flag [FLAG_NO_FIX_PLAYER])
		1656	// if this is a player's inventory, update stats
		1657	update_stats ();
1721		1658
1722	/* Client has no idea of ordering so lets not bother ordering it here.	1659	INVOKE_OBJECT (INSERT, this);
1723	* It sure simplifies this function...	1660
1724	*/
1725	if (where->inv==NULL)
1726	where->inv=op;
1727	else {
1728	op->below = where->inv;
1729	op->below->above = op;
1730	where->inv = op;
1731	}
1732	return op;	1661	return op;
1733	}	1662	}
1734		1663
1735	/*	1664	/*
1736	* Checks if any objects has a move_type that matches objects	1665	* Checks if any objects has a move_type that matches objects
…		…
1750	*	1679	*
1751	* MSW 2001-07-08: Check all objects on space, not just those below	1680	* MSW 2001-07-08: Check all objects on space, not just those below
1752	* object being inserted. insert_ob_in_map may not put new objects	1681	* object being inserted. insert_ob_in_map may not put new objects
1753	* on top.	1682	* on top.
1754	*/	1683	*/
1755		1684	int
1756	int check_move_on (object *op, object *originator)	1685	check_move_on (object *op, object *originator)
1757	{	1686	{
		1687	if (QUERY_FLAG (op, FLAG_NO_APPLY))
		1688	return 0;
		1689
1758	object *tmp;	1690	object *tmp;
1759	tag_t tag;
1760	mapstruct *m=op->map;	1691	maptile *m = op->map;
1761	int x=op->x, y=op->y;	1692	int x = op->x, y = op->y;
1762	MoveType move_on, move_slow, move_block;
1763		1693
1764	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1694	mapspace &ms = m->at (x, y);
1765	return 0;
1766		1695
1767	tag = op->count;	1696	ms.update ();
1768		1697
1769	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1698	MoveType move_on = ms.move_on;
1770	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1699	MoveType move_slow = ms.move_slow;
1771	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1700	MoveType move_block = ms.move_block;
1772		1701
1773	/* if nothing on this space will slow op down or be applied,	1702	/* if nothing on this space will slow op down or be applied,
1774	* no need to do checking below. have to make sure move_type	1703	* no need to do checking below. have to make sure move_type
1775	* is set, as lots of objects don't have it set - we treat that	1704	* is set, as lots of objects don't have it set - we treat that
1776	* as walking.	1705	* as walking.
1777	*/	1706	*/
1778	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1707	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1779	return 0;	1708	return 0;
1780		1709
1781	/* This is basically inverse logic of that below - basically,	1710	/* This is basically inverse logic of that below - basically,
1782	* if the object can avoid the move on or slow move, they do so,	1711	* if the object can avoid the move on or slow move, they do so,
1783	* but can't do it if the alternate movement they are using is	1712	* but can't do it if the alternate movement they are using is
1784	* blocked. Logic on this seems confusing, but does seem correct.	1713	* blocked. Logic on this seems confusing, but does seem correct.
1785	*/	1714	*/
1786	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1715	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1787	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1716	return 0;
1788		1717
1789	/* The objects have to be checked from top to bottom.	1718	/* The objects have to be checked from top to bottom.
1790	* Hence, we first go to the top:	1719	* Hence, we first go to the top:
1791	*/	1720	*/
1792		1721	for (object *next, *tmp = ms.top; tmp; tmp = next)
1793	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&
1794	tmp->above!=NULL; tmp=tmp->above) {
1795	/* Trim the search when we find the first other spell effect
1796	* this helps performance so that if a space has 50 spell objects,
1797	* we don't need to check all of them.
1798	*/
1799	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;
1800	}	1722	{
1801	for(;tmp!=NULL; tmp=tmp->below) {	1723	next = tmp->below;
		1724
		1725	if (tmp == op)
1802	if (tmp == op) continue; /* Can't apply yourself */	1726	continue; /* Can't apply yourself */
1803		1727
1804	/* Check to see if one of the movement types should be slowed down.	1728	/* Check to see if one of the movement types should be slowed down.
1805	* Second check makes sure that the movement types not being slowed	1729	* Second check makes sure that the movement types not being slowed
1806	* (~slow_move) is not blocked on this space - just because the	1730	* (~slow_move) is not blocked on this space - just because the
1807	* space doesn't slow down swimming (for example), if you can't actually	1731	* space doesn't slow down swimming (for example), if you can't actually
1808	* swim on that space, can't use it to avoid the penalty.	1732	* swim on that space, can't use it to avoid the penalty.
1809	*/	1733	*/
1810	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1734	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1735	{
1811	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1736	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1812	((op->move_type & tmp->move_slow) &&
1813	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1737	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
1814		1738	{
1815	float diff;
1816
1817	diff = tmp->move_slow_penalty*FABS(op->speed);	1739	float diff = tmp->move_slow_penalty * fabs (op->speed);
1818	if (op->type == PLAYER) {	1740
		1741	if (op->is_player ())
1819	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1742	if ((tmp->flag [FLAG_IS_HILLY ] && find_skill_by_number (op, SK_CLIMBING)) ||
1820	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1743	(tmp->flag [FLAG_IS_WOODED] && find_skill_by_number (op, SK_WOODSMAN)))
1821	diff /= 4.0;	1744	diff /= 4.0;
1822	}	1745
1823	}
1824	op->speed_left -= diff;	1746	op->speed_left -= diff;
1825	}	1747	}
1826	}	1748	}
1827		1749
1828	/* Basically same logic as above, except now for actual apply. */	1750	/* Basically same logic as above, except now for actual apply. */
1829	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1751	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1830	((op->move_type & tmp->move_on) &&
1831	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1752	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1832		1753	{
1833	move_apply(tmp, op, originator);	1754	move_apply (tmp, op, originator);
		1755
1834	if (was_destroyed (op, tag))	1756	if (op->destroyed ())
1835	return 1;	1757	return 1;
1836		1758
1837	/* what the person/creature stepped onto has moved the object	1759	/* what the person/creature stepped onto has moved the object
1838	* someplace new. Don't process any further - if we did,	1760	* someplace new. Don't process any further - if we did,
1839	* have a feeling strange problems would result.	1761	* have a feeling strange problems would result.
1840	*/	1762	*/
1841	if (op->map != m || op->x != x || op->y != y) return 0;	1763	if (op->map != m || op->x != x || op->y != y)
		1764	return 0;
1842	}	1765	}
1843	}	1766	}
		1767
1844	return 0;	1768	return 0;
1845	}	1769	}
1846		1770
1847	/*	1771	/*
1848	* present_arch(arch, map, x, y) searches for any objects with	1772	* present_arch(arch, map, x, y) searches for any objects with
1849	* a matching archetype at the given map and coordinates.	1773	* a matching archetype at the given map and coordinates.
1850	* The first matching object is returned, or NULL if none.	1774	* The first matching object is returned, or NULL if none.
1851	*/	1775	*/
1852		1776	object *
1853	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1777	present_arch (const archetype *at, maptile *m, int x, int y)
1854	object *tmp;	1778	{
1855	if(m==NULL || out_of_map(m,x,y)) {	1779	if (!m || out_of_map (m, x, y))
		1780	{
1856	LOG(llevError,"Present_arch called outside map.\n");	1781	LOG (llevError, "Present_arch called outside map.\n");
1857	return NULL;	1782	return NULL;
1858	}	1783	}
1859	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1784
1860	if(tmp->arch == at)	1785	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
		1786	if (tmp->arch->archname == at->archname)
1861	return tmp;	1787	return tmp;
		1788
1862	return NULL;	1789	return NULL;
1863	}	1790	}
1864		1791
1865	/*	1792	/*
1866	* present(type, map, x, y) searches for any objects with	1793	* present(type, map, x, y) searches for any objects with
1867	* a matching type variable at the given map and coordinates.	1794	* a matching type variable at the given map and coordinates.
1868	* The first matching object is returned, or NULL if none.	1795	* The first matching object is returned, or NULL if none.
1869	*/	1796	*/
1870		1797	object *
1871	object *present(unsigned char type,mapstruct *m, int x,int y) {	1798	present (unsigned char type, maptile *m, int x, int y)
1872	object *tmp;	1799	{
1873	if(out_of_map(m,x,y)) {	1800	if (out_of_map (m, x, y))
		1801	{
1874	LOG(llevError,"Present called outside map.\n");	1802	LOG (llevError, "Present called outside map.\n");
1875	return NULL;	1803	return NULL;
1876	}	1804	}
1877	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1805
		1806	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1878	if(tmp->type==type)	1807	if (tmp->type == type)
1879	return tmp;	1808	return tmp;
		1809
1880	return NULL;	1810	return NULL;
1881	}	1811	}
1882		1812
1883	/*	1813	/*
1884	* present_in_ob(type, object) searches for any objects with	1814	* present_in_ob(type, object) searches for any objects with
1885	* a matching type variable in the inventory of the given object.	1815	* a matching type variable in the inventory of the given object.
1886	* The first matching object is returned, or NULL if none.	1816	* The first matching object is returned, or NULL if none.
1887	*/	1817	*/
1888		1818	object *
1889	object *present_in_ob(unsigned char type, const object *op) {	1819	present_in_ob (unsigned char type, const object *op)
1890	object *tmp;	1820	{
1891	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1821	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1892	if(tmp->type==type)	1822	if (tmp->type == type)
1893	return tmp;	1823	return tmp;
		1824
1894	return NULL;	1825	return NULL;
1895	}	1826	}
1896		1827
1897	/*	1828	/*
1898	* present_in_ob (type, str, object) searches for any objects with	1829	* present_in_ob (type, str, object) searches for any objects with
…		…
1906	* str is the string to match against. Note that we match against	1837	* str is the string to match against. Note that we match against
1907	* the object name, not the archetype name. this is so that the	1838	* the object name, not the archetype name. this is so that the
1908	* spell code can use one object type (force), but change it's name	1839	* spell code can use one object type (force), but change it's name
1909	* to be unique.	1840	* to be unique.
1910	*/	1841	*/
1911		1842	object *
1912	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1843	present_in_ob_by_name (int type, const char *str, const object *op)
1913	object *tmp;	1844	{
1914
1915	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1845	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1916	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1846	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1917	return tmp;	1847	return tmp;
1918	}	1848
1919	return NULL;	1849	return 0;
1920	}	1850	}
1921		1851
1922	/*	1852	/*
1923	* present_arch_in_ob(archetype, object) searches for any objects with	1853	* present_arch_in_ob(archetype, object) searches for any objects with
1924	* a matching archetype in the inventory of the given object.	1854	* a matching archetype in the inventory of the given object.
1925	* The first matching object is returned, or NULL if none.	1855	* The first matching object is returned, or NULL if none.
1926	*/	1856	*/
1927		1857	object *
1928	object *present_arch_in_ob(const archetype *at, const object *op) {	1858	present_arch_in_ob (const archetype *at, const object *op)
1929	object *tmp;	1859	{
1930	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1860	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1931	if( tmp->arch == at)	1861	if (tmp->arch->archname == at->archname)
1932	return tmp;	1862	return tmp;
		1863
1933	return NULL;	1864	return NULL;
1934	}	1865	}
1935		1866
1936	/*	1867	/*
1937	* activate recursively a flag on an object inventory	1868	* activate recursively a flag on an object inventory
1938	*/	1869	*/
		1870	void
1939	void flag_inv(object*op, int flag){	1871	flag_inv (object *op, int flag)
1940	object *tmp;	1872	{
1941	if(op->inv)
1942	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1873	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1874	{
1943	SET_FLAG(tmp, flag);	1875	SET_FLAG (tmp, flag);
1944	flag_inv(tmp,flag);	1876	flag_inv (tmp, flag);
1945	}	1877	}
		1878	}
		1879
1946	}/*	1880	/*
1947	* desactivate recursively a flag on an object inventory	1881	* deactivate recursively a flag on an object inventory
1948	*/	1882	*/
		1883	void
1949	void unflag_inv(object*op, int flag){	1884	unflag_inv (object *op, int flag)
1950	object *tmp;	1885	{
1951	if(op->inv)
1952	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1886	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1887	{
1953	CLEAR_FLAG(tmp, flag);	1888	CLEAR_FLAG (tmp, flag);
1954	unflag_inv(tmp,flag);	1889	unflag_inv (tmp, flag);
1955	}	1890	}
1956	}
1957
1958	/*
1959	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1960	* all it's inventory (recursively).
1961	* If checksums are used, a player will get set_cheat called for
1962	* him/her-self and all object carried by a call to this function.
1963	*/
1964
1965	void set_cheat(object *op) {
1966	SET_FLAG(op, FLAG_WAS_WIZ);
1967	flag_inv(op, FLAG_WAS_WIZ);
1968	}	1891	}
1969		1892
1970	/*	1893	/*
1971	* find_free_spot(object, map, x, y, start, stop) will search for	1894	* find_free_spot(object, map, x, y, start, stop) will search for
1972	* a spot at the given map and coordinates which will be able to contain	1895	* a spot at the given map and coordinates which will be able to contain
…		…
1974	* to search (see the freearr_x/y[] definition).	1897	* to search (see the freearr_x/y[] definition).
1975	* It returns a random choice among the alternatives found.	1898	* It returns a random choice among the alternatives found.
1976	* start and stop are where to start relative to the free_arr array (1,9	1899	* start and stop are where to start relative to the free_arr array (1,9
1977	* does all 4 immediate directions). This returns the index into the	1900	* does all 4 immediate directions). This returns the index into the
1978	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1901	* array of the free spot, -1 if no spot available (dir 0 = x,y)
1979	* Note - this only checks to see if there is space for the head of the
1980	* object - if it is a multispace object, this should be called for all
1981	* pieces.
1982	* Note2: This function does correctly handle tiled maps, but does not	1902	* Note: This function does correctly handle tiled maps, but does not
1983	* inform the caller. However, insert_ob_in_map will update as	1903	* inform the caller. However, insert_ob_in_map will update as
1984	* necessary, so the caller shouldn't need to do any special work.	1904	* necessary, so the caller shouldn't need to do any special work.
1985	* Note - updated to take an object instead of archetype - this is necessary	1905	* Note - updated to take an object instead of archetype - this is necessary
1986	* because arch_blocked (now ob_blocked) needs to know the movement type	1906	* because arch_blocked (now ob_blocked) needs to know the movement type
1987	* to know if the space in question will block the object. We can't use	1907	* to know if the space in question will block the object. We can't use
1988	* the archetype because that isn't correct if the monster has been	1908	* the archetype because that isn't correct if the monster has been
1989	* customized, changed states, etc.	1909	* customized, changed states, etc.
1990	*/	1910	*/
1991		1911	int
1992	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1912	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1913	{
		1914	int altern[SIZEOFFREE];
1993	int i,index=0, flag;	1915	int index = 0, flag;
1994	static int altern[SIZEOFFREE];
1995		1916
1996	for(i=start;i<stop;i++) {	1917	for (int i = start; i < stop; i++)
1997	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1918	{
1998	if(!flag)	1919	mapxy pos (m, x, y); pos.move (i);
		1920
		1921	if (!pos.normalise ())
		1922	continue;
		1923
		1924	mapspace &ms = *pos;
		1925
		1926	if (ms.flags () & P_IS_ALIVE)
		1927	continue;
		1928
		1929	/* However, often
		1930	* ob doesn't have any move type (when used to place exits)
		1931	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		1932	*/
		1933	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		1934	{
1999	altern[index++]=i;	1935	altern [index++] = i;
		1936	continue;
		1937	}
2000		1938
2001	/* Basically, if we find a wall on a space, we cut down the search size.	1939	/* Basically, if we find a wall on a space, we cut down the search size.
2002	* In this way, we won't return spaces that are on another side of a wall.	1940	* In this way, we won't return spaces that are on another side of a wall.
2003	* This mostly work, but it cuts down the search size in all directions -	1941	* This mostly work, but it cuts down the search size in all directions -
2004	* if the space being examined only has a wall to the north and empty	1942	* if the space being examined only has a wall to the north and empty
2005	* spaces in all the other directions, this will reduce the search space	1943	* spaces in all the other directions, this will reduce the search space
2006	* to only the spaces immediately surrounding the target area, and	1944	* to only the spaces immediately surrounding the target area, and
2007	* won't look 2 spaces south of the target space.	1945	* won't look 2 spaces south of the target space.
2008	*/	1946	*/
2009	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1947	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		1948	{
2010	stop=maxfree[i];	1949	stop = maxfree[i];
2011	}	1950	continue;
2012	if(!index) return -1;	1951	}
2013	return altern[RANDOM()%index];
2014	}
2015		1952
		1953	/* Note it is intentional that we check ob - the movement type of the
		1954	* head of the object should correspond for the entire object.
		1955	*/
		1956	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		1957	continue;
		1958
		1959	if (ob->blocked (pos.m, pos.x, pos.y))
		1960	continue;
		1961
		1962	altern [index++] = i;
		1963	}
		1964
		1965	if (!index)
		1966	return -1;
		1967
		1968	return altern [rndm (index)];
		1969	}
		1970
2016	/*	1971	/*
2017	* find_first_free_spot(archetype, mapstruct, x, y) works like	1972	* find_first_free_spot(archetype, maptile, x, y) works like
2018	* find_free_spot(), but it will search max number of squares.	1973	* find_free_spot(), but it will search max number of squares.
2019	* But it will return the first available spot, not a random choice.	1974	* But it will return the first available spot, not a random choice.
2020	* Changed 0.93.2: Have it return -1 if there is no free spot available.	1975	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2021	*/	1976	*/
2022		1977	int
2023	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	1978	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2024	int i;	1979	{
2025	for(i=0;i<SIZEOFFREE;i++) {	1980	for (int i = 0; i < SIZEOFFREE; i++)
2026	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	1981	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2027	return i;	1982	return i;
2028	}	1983
2029	return -1;	1984	return -1;
2030	}	1985	}
2031		1986
2032	/*	1987	/*
2033	* The function permute(arr, begin, end) randomly reorders the array	1988	* The function permute(arr, begin, end) randomly reorders the array
2034	* arr[begin..end-1].	1989	* arr[begin..end-1].
		1990	* now uses a fisher-yates shuffle, old permute was broken
2035	*/	1991	*/
		1992	static void
2036	static void permute(int *arr, int begin, int end)	1993	permute (int *arr, int begin, int end)
2037	{	1994	{
2038	int i, j, tmp, len;	1995	arr += begin;
		1996	end -= begin;
2039		1997
2040	len = end-begin;	1998	while (--end)
2041	for(i = begin; i < end; i++)	1999	swap (arr [end], arr [rndm (end + 1)]);
2042	{
2043	j = begin+RANDOM()%len;
2044
2045	tmp = arr[i];
2046	arr[i] = arr[j];
2047	arr[j] = tmp;
2048	}
2049	}	2000	}
2050		2001
2051	/* new function to make monster searching more efficient, and effective!	2002	/* new function to make monster searching more efficient, and effective!
2052	* This basically returns a randomized array (in the passed pointer) of	2003	* This basically returns a randomized array (in the passed pointer) of
2053	* the spaces to find monsters. In this way, it won't always look for	2004	* the spaces to find monsters. In this way, it won't always look for
2054	* monsters to the north first. However, the size of the array passed	2005	* monsters to the north first. However, the size of the array passed
2055	* covers all the spaces, so within that size, all the spaces within	2006	* covers all the spaces, so within that size, all the spaces within
2056	* the 3x3 area will be searched, just not in a predictable order.	2007	* the 3x3 area will be searched, just not in a predictable order.
2057	*/	2008	*/
		2009	void
2058	void get_search_arr(int *search_arr)	2010	get_search_arr (int *search_arr)
2059	{	2011	{
2060	int i;	2012	int i;
2061		2013
2062	for(i = 0; i < SIZEOFFREE; i++)	2014	for (i = 0; i < SIZEOFFREE; i++)
2063	{
2064	search_arr[i] = i;	2015	search_arr[i] = i;
2065	}
2066		2016
2067	permute(search_arr, 1, SIZEOFFREE1+1);	2017	permute (search_arr, 1, SIZEOFFREE1 + 1);
2068	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2018	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2069	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2019	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2070	}	2020	}
2071		2021
2072	/*	2022	/*
2073	* find_dir(map, x, y, exclude) will search some close squares in the	2023	* find_dir(map, x, y, exclude) will search some close squares in the
2074	* given map at the given coordinates for live objects.	2024	* given map at the given coordinates for live objects.
…		…
2079	* Perhaps incorrectly, but I'm making the assumption that exclude	2029	* Perhaps incorrectly, but I'm making the assumption that exclude
2080	* is actually want is going to try and move there. We need this info	2030	* is actually want is going to try and move there. We need this info
2081	* because we have to know what movement the thing looking to move	2031	* because we have to know what movement the thing looking to move
2082	* there is capable of.	2032	* there is capable of.
2083	*/	2033	*/
2084		2034	int
2085	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2035	find_dir (maptile *m, int x, int y, object *exclude)
		2036	{
2086	int i,max=SIZEOFFREE, mflags;	2037	int max = SIZEOFFREE, mflags;
2087	sint16 nx, ny;
2088	object *tmp;
2089	mapstruct *mp;
2090	MoveType blocked, move_type;	2038	MoveType move_type;
2091		2039
2092	if (exclude && exclude->head) {	2040	if (exclude && exclude->head_ () != exclude)
		2041	{
2093	exclude = exclude->head;	2042	exclude = exclude->head;
2094	move_type = exclude->move_type;	2043	move_type = exclude->move_type;
2095	} else {	2044	}
		2045	else
		2046	{
2096	/* If we don't have anything, presume it can use all movement types. */	2047	/* If we don't have anything, presume it can use all movement types. */
2097	move_type=MOVE_ALL;	2048	move_type = MOVE_ALL;
		2049	}
		2050
		2051	for (int i = 1; i < max; i++)
2098	}	2052	{
		2053	mapxy pos (m, x, y);
		2054	pos.move (i);
2099		2055
2100	for(i=1;i<max;i++) {	2056	if (!pos.normalise ())
2101	mp = m;
2102	nx = x + freearr_x[i];	2057	max = maxfree[i];
2103	ny = y + freearr_y[i];	2058	else
		2059	{
		2060	mapspace &ms = *pos;
2104		2061
2105	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2062	if ((move_type & ms.move_block) == move_type)
2106	if (mflags & P_OUT_OF_MAP) {
2107	max = maxfree[i];	2063	max = maxfree [i];
2108	} else {
2109	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2110
2111	if ((move_type & blocked) == move_type) {
2112	max=maxfree[i];
2113	} else if (mflags & P_IS_ALIVE) {	2064	else if (ms.flags () & P_IS_ALIVE)
2114	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2065	{
2115	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2066	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		2067	if ((tmp->flag [FLAG_MONSTER] || tmp->is_player ())
2116	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2068	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2117	break;
2118	}
2119	}
2120	if(tmp) {
2121	return freedir[i];	2069	return freedir [i];
2122	}
2123	}	2070	}
2124	}	2071	}
2125	}	2072	}
		2073
2126	return 0;	2074	return 0;
2127	}	2075	}
2128		2076
2129	/*	2077	/*
2130	* distance(object 1, object 2) will return the square of the	2078	* distance(object 1, object 2) will return the square of the
2131	* distance between the two given objects.	2079	* distance between the two given objects.
2132	*/	2080	*/
2133		2081	int
2134	int distance(const object *ob1, const object *ob2) {	2082	distance (const object *ob1, const object *ob2)
2135	int i;	2083	{
2136	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2084	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2137	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2138	return i;
2139	}	2085	}
2140		2086
2141	/*	2087	/*
2142	* find_dir_2(delta-x,delta-y) will return a direction in which	2088	* find_dir_2(delta-x,delta-y) will return a direction in which
2143	* an object which has subtracted the x and y coordinates of another	2089	* an object which has subtracted the x and y coordinates of another
2144	* object, needs to travel toward it.	2090	* object, needs to travel toward it.
2145	*/	2091	*/
2146		2092	int
2147	int find_dir_2(int x, int y) {	2093	find_dir_2 (int x, int y)
		2094	{
2148	int q;	2095	int q;
2149		2096
2150	if(y)	2097	if (y)
2151	q=x*100/y;	2098	q = x * 100 / y;
2152	else if (x)	2099	else if (x)
2153	q= -300*x;	2100	q = -300 * x;
2154	else	2101	else
2155	return 0;	2102	return 0;
2156		2103
2157	if(y>0) {	2104	if (y > 0)
		2105	{
2158	if(q < -242)	2106	if (q < -242)
2159	return 3 ;	2107	return 3;
2160	if (q < -41)	2108	if (q < -41)
2161	return 2 ;	2109	return 2;
2162	if (q < 41)	2110	if (q < 41)
2163	return 1 ;	2111	return 1;
2164	if (q < 242)	2112	if (q < 242)
2165	return 8 ;	2113	return 8;
2166	return 7 ;	2114	return 7;
2167	}	2115	}
2168		2116
2169	if (q < -242)	2117	if (q < -242)
2170	return 7 ;	2118	return 7;
2171	if (q < -41)	2119	if (q < -41)
2172	return 6 ;	2120	return 6;
2173	if (q < 41)	2121	if (q < 41)
2174	return 5 ;	2122	return 5;
2175	if (q < 242)	2123	if (q < 242)
2176	return 4 ;	2124	return 4;
2177		2125
2178	return 3 ;	2126	return 3;
2179	}
2180
2181	/*
2182	* absdir(int): Returns a number between 1 and 8, which represent
2183	* the "absolute" direction of a number (it actually takes care of
2184	* "overflow" in previous calculations of a direction).
2185	*/
2186
2187	int absdir(int d) {
2188	while(d<1) d+=8;
2189	while(d>8) d-=8;
2190	return d;
2191	}	2127	}
2192		2128
2193	/*	2129	/*
2194	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2130	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2195	* between two directions (which are expected to be absolute (see absdir())	2131	* between two directions (which are expected to be absolute (see absdir())
2196	*/	2132	*/
2197		2133	int
2198	int dirdiff(int dir1, int dir2) {	2134	dirdiff (int dir1, int dir2)
		2135	{
2199	int d;	2136	int d;
		2137
2200	d = abs(dir1 - dir2);	2138	d = abs (dir1 - dir2);
2201	if(d>4)	2139	if (d > 4)
2202	d = 8 - d;	2140	d = 8 - d;
		2141
2203	return d;	2142	return d;
2204	}	2143	}
2205		2144
2206	/* peterm:	2145	/* peterm:
2207	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2146	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2210	* This basically means that if direction is 15, then it could either go	2149	* This basically means that if direction is 15, then it could either go
2211	* direction 4, 14, or 16 to get back to where we are.	2150	* direction 4, 14, or 16 to get back to where we are.
2212	* Moved from spell_util.c to object.c with the other related direction	2151	* Moved from spell_util.c to object.c with the other related direction
2213	* functions.	2152	* functions.
2214	*/	2153	*/
2215
2216	int reduction_dir[SIZEOFFREE][3] = {	2154	static const int reduction_dir[SIZEOFFREE][3] = {
2217	{0,0,0}, /* 0 */	2155	{0, 0, 0}, /* 0 */
2218	{0,0,0}, /* 1 */	2156	{0, 0, 0}, /* 1 */
2219	{0,0,0}, /* 2 */	2157	{0, 0, 0}, /* 2 */
2220	{0,0,0}, /* 3 */	2158	{0, 0, 0}, /* 3 */
2221	{0,0,0}, /* 4 */	2159	{0, 0, 0}, /* 4 */
2222	{0,0,0}, /* 5 */	2160	{0, 0, 0}, /* 5 */
2223	{0,0,0}, /* 6 */	2161	{0, 0, 0}, /* 6 */
2224	{0,0,0}, /* 7 */	2162	{0, 0, 0}, /* 7 */
2225	{0,0,0}, /* 8 */	2163	{0, 0, 0}, /* 8 */
2226	{8,1,2}, /* 9 */	2164	{8, 1, 2}, /* 9 */
2227	{1,2,-1}, /* 10 */	2165	{1, 2, -1}, /* 10 */
2228	{2,10,12}, /* 11 */	2166	{2, 10, 12}, /* 11 */
2229	{2,3,-1}, /* 12 */	2167	{2, 3, -1}, /* 12 */
2230	{2,3,4}, /* 13 */	2168	{2, 3, 4}, /* 13 */
2231	{3,4,-1}, /* 14 */	2169	{3, 4, -1}, /* 14 */
2232	{4,14,16}, /* 15 */	2170	{4, 14, 16}, /* 15 */
2233	{5,4,-1}, /* 16 */	2171	{5, 4, -1}, /* 16 */
2234	{4,5,6}, /* 17 */	2172	{4, 5, 6}, /* 17 */
2235	{6,5,-1}, /* 18 */	2173	{6, 5, -1}, /* 18 */
2236	{6,20,18}, /* 19 */	2174	{6, 20, 18}, /* 19 */
2237	{7,6,-1}, /* 20 */	2175	{7, 6, -1}, /* 20 */
2238	{6,7,8}, /* 21 */	2176	{6, 7, 8}, /* 21 */
2239	{7,8,-1}, /* 22 */	2177	{7, 8, -1}, /* 22 */
2240	{8,22,24}, /* 23 */	2178	{8, 22, 24}, /* 23 */
2241	{8,1,-1}, /* 24 */	2179	{8, 1, -1}, /* 24 */
2242	{24,9,10}, /* 25 */	2180	{24, 9, 10}, /* 25 */
2243	{9,10,-1}, /* 26 */	2181	{9, 10, -1}, /* 26 */
2244	{10,11,-1}, /* 27 */	2182	{10, 11, -1}, /* 27 */
2245	{27,11,29}, /* 28 */	2183	{27, 11, 29}, /* 28 */
2246	{11,12,-1}, /* 29 */	2184	{11, 12, -1}, /* 29 */
2247	{12,13,-1}, /* 30 */	2185	{12, 13, -1}, /* 30 */
2248	{12,13,14}, /* 31 */	2186	{12, 13, 14}, /* 31 */
2249	{13,14,-1}, /* 32 */	2187	{13, 14, -1}, /* 32 */
2250	{14,15,-1}, /* 33 */	2188	{14, 15, -1}, /* 33 */
2251	{33,15,35}, /* 34 */	2189	{33, 15, 35}, /* 34 */
2252	{16,15,-1}, /* 35 */	2190	{16, 15, -1}, /* 35 */
2253	{17,16,-1}, /* 36 */	2191	{17, 16, -1}, /* 36 */
2254	{18,17,16}, /* 37 */	2192	{18, 17, 16}, /* 37 */
2255	{18,17,-1}, /* 38 */	2193	{18, 17, -1}, /* 38 */
2256	{18,19,-1}, /* 39 */	2194	{18, 19, -1}, /* 39 */
2257	{41,19,39}, /* 40 */	2195	{41, 19, 39}, /* 40 */
2258	{19,20,-1}, /* 41 */	2196	{19, 20, -1}, /* 41 */
2259	{20,21,-1}, /* 42 */	2197	{20, 21, -1}, /* 42 */
2260	{20,21,22}, /* 43 */	2198	{20, 21, 22}, /* 43 */
2261	{21,22,-1}, /* 44 */	2199	{21, 22, -1}, /* 44 */
2262	{23,22,-1}, /* 45 */	2200	{23, 22, -1}, /* 45 */
2263	{45,47,23}, /* 46 */	2201	{45, 47, 23}, /* 46 */
2264	{23,24,-1}, /* 47 */	2202	{23, 24, -1}, /* 47 */
2265	{24,9,-1}}; /* 48 */	2203	{24, 9, -1}
		2204	}; /* 48 */
2266		2205
2267	/* Recursive routine to step back and see if we can	2206	/* Recursive routine to step back and see if we can
2268	* find a path to that monster that we found. If not,	2207	* find a path to that monster that we found. If not,
2269	* we don't bother going toward it. Returns 1 if we	2208	* we don't bother going toward it. Returns 1 if we
2270	* can see a direct way to get it	2209	* can see a direct way to get it
2271	* Modified to be map tile aware -.MSW	2210	* Modified to be map tile aware -.MSW
2272	*/	2211	*/
2273		2212	int
2274
2275	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2213	can_see_monsterP (maptile *m, int x, int y, int dir)
		2214	{
2276	sint16 dx, dy;	2215	sint16 dx, dy;
2277	int mflags;	2216	int mflags;
2278		2217
		2218	if (dir < 0)
2279	if(dir<0) return 0; /* exit condition: invalid direction */	2219	return 0; /* exit condition: invalid direction */
2280		2220
2281	dx = x + freearr_x[dir];	2221	dx = x + freearr_x[dir];
2282	dy = y + freearr_y[dir];	2222	dy = y + freearr_y[dir];
2283		2223
2284	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2224	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2285		2225
2286	/* This functional arguably was incorrect before - it was	2226	/* This functional arguably was incorrect before - it was
2287	* checking for P_WALL - that was basically seeing if	2227	* checking for P_WALL - that was basically seeing if
2288	* we could move to the monster - this is being more	2228	* we could move to the monster - this is being more
2289	* literal on if we can see it. To know if we can actually	2229	* literal on if we can see it. To know if we can actually
2290	* move to the monster, we'd need the monster passed in or	2230	* move to the monster, we'd need the monster passed in or
2291	* at least its move type.	2231	* at least its move type.
2292	*/	2232	*/
2293	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2233	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2234	return 0;
2294		2235
2295	/* yes, can see. */	2236	/* yes, can see. */
2296	if(dir < 9) return 1;	2237	if (dir < 9)
		2238	return 1;
		2239
2297	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2240	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2298	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2241	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2299	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2242	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2300	}	2243	}
2301		2244
2302
2303
2304	/*	2245	/*
2305	* can_pick(picker, item): finds out if an object is possible to be	2246	* can_pick(picker, item): finds out if an object is possible to be
2306	* picked up by the picker. Returnes 1 if it can be	2247	* picked up by the picker. Returnes 1 if it can be
2307	* picked up, otherwise 0.	2248	* picked up, otherwise 0.
2308	*	2249	*
2309	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2250	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2310	* core dumps if they do.	2251	* core dumps if they do.
2311	*	2252	*
2312	* Add a check so we can't pick up invisible objects (0.93.8)	2253	* Add a check so we can't pick up invisible objects (0.93.8)
2313	*/	2254	*/
2314		2255	int
2315	int can_pick(const object *who, const object *item) {	2256	can_pick (const object *who, const object *item)
		2257	{
2316	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2258	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2317	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2259	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2318	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2260	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->is_player () || item->weight < who->weight / 3));
2319	(who->type==PLAYER||item->weight<who->weight/3));
2320	}	2261	}
2321
2322		2262
2323	/*	2263	/*
2324	* create clone from object to another	2264	* create clone from object to another
2325	*/	2265	*/
2326	object *object_create_clone (object *asrc) {	2266	object *
2327	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2267	object::deep_clone ()
		2268	{
		2269	assert (("deep_clone called on non-head object", is_head ()));
2328		2270
2329	if(!asrc) return NULL;	2271	object *dst = clone ();
2330	src = asrc;
2331	if(src->head)
2332	src = src->head;
2333		2272
2334	prev = NULL;	2273	object *prev = dst;
2335	for(part = src; part; part = part->more) {	2274	for (object *part = this->more; part; part = part->more)
2336	tmp = get_object();	2275	{
2337	copy_object(part,tmp);	2276	object *tmp = part->clone ();
2338	tmp->x -= src->x;
2339	tmp->y -= src->y;
2340	if(!part->head) {
2341	dst = tmp;
2342	tmp->head = NULL;
2343	} else {
2344	tmp->head = dst;	2277	tmp->head = dst;
2345	}
2346	tmp->more = NULL;
2347	if(prev)
2348	prev->more = tmp;	2278	prev->more = tmp;
2349	prev = tmp;	2279	prev = tmp;
2350	}	2280	}
2351	/*** copy inventory ***/	2281
2352	for(item = src->inv; item; item = item->below) {	2282	for (object *item = inv; item; item = item->below)
2353	(void) insert_ob_in_ob(object_create_clone(item),dst);	2283	insert_ob_in_ob (item->deep_clone (), dst);
2354	}
2355		2284
2356	return dst;	2285	return dst;
2357	}
2358
2359	/* return true if the object was destroyed, 0 otherwise */
2360	int was_destroyed (const object *op, tag_t old_tag)
2361	{
2362	/* checking for FLAG_FREED isn't necessary, but makes this function more
2363	* robust */
2364	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2365	}
2366
2367	/* GROS - Creates an object using a string representing its content. */
2368	/* Basically, we save the content of the string to a temp file, then call */
2369	/* load_object on it. I admit it is a highly inefficient way to make things, */
2370	/* but it was simple to make and allows reusing the load_object function. */
2371	/* Remember not to use load_object_str in a time-critical situation. */
2372	/* Also remember that multiparts objects are not supported for now. */
2373
2374	object* load_object_str(const char *obstr)
2375	{
2376	object *op;
2377	char filename[MAX_BUF];
2378	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2379
2380	FILE *tempfile=fopen(filename,"w");
2381	if (tempfile == NULL)
2382	{
2383	LOG(llevError,"Error - Unable to access load object temp file\n");
2384	return NULL;
2385	};
2386	fprintf(tempfile,obstr);
2387	fclose(tempfile);
2388
2389	op=get_object();
2390
2391	object_thawer thawer (filename);
2392
2393	if (thawer)
2394	load_object(thawer,op,0);
2395
2396	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2397	CLEAR_FLAG(op,FLAG_REMOVED);
2398
2399	return op;
2400	}	2286	}
2401		2287
2402	/* This returns the first object in who's inventory that	2288	/* This returns the first object in who's inventory that
2403	* has the same type and subtype match.	2289	* has the same type and subtype match.
2404	* returns NULL if no match.	2290	* returns NULL if no match.
2405	*/	2291	*/
		2292	object *
2406	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2293	find_obj_by_type_subtype (const object *who, int type, int subtype)
2407	{	2294	{
2408	object *tmp;
2409
2410	for (tmp=who->inv; tmp; tmp=tmp->below)	2295	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2411	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2296	if (tmp->type == type && tmp->subtype == subtype)
		2297	return tmp;
2412		2298
2413	return NULL;	2299	return 0;
2414	}	2300	}
2415		2301
2416	/* If ob has a field named key, return the link from the list,	2302	shstr_tmp
2417	* otherwise return NULL.	2303	object::kv_get (shstr_tmp key) const
2418	*	2304	{
2419	* key must be a passed in shared string - otherwise, this won't	2305	for (key_value *kv = key_values; kv; kv = kv->next)
2420	* do the desired thing.	2306	if (kv->key == key)
2421	*/	2307	return kv->value;
2422	key_value * get_ob_key_link(const object * ob, const char * key) {	2308
2423	key_value * link;	2309	return shstr ();
		2310	}
		2311
		2312	void
		2313	object::kv_set (shstr_tmp key, shstr_tmp value)
		2314	{
		2315	for (key_value *kv = key_values; kv; kv = kv->next)
		2316	if (kv->key == key)
		2317	{
		2318	kv->value = value;
		2319	return;
		2320	}
		2321
		2322	key_value *kv = new key_value;
		2323
		2324	kv->next = key_values;
		2325	kv->key = key;
		2326	kv->value = value;
		2327
		2328	key_values = kv;
		2329	}
		2330
		2331	void
		2332	object::kv_del (shstr_tmp key)
		2333	{
		2334	for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
		2335	if ((*kvp)->key == key)
		2336	{
		2337	key_value *kv = *kvp;
		2338	*kvp = (*kvp)->next;
		2339	delete kv;
		2340	return;
		2341	}
		2342	}
		2343
		2344	object::depth_iterator::depth_iterator (object *container)
		2345	: iterator_base (container)
		2346	{
		2347	while (item->inv)
		2348	item = item->inv;
		2349	}
		2350
		2351	void
		2352	object::depth_iterator::next ()
		2353	{
		2354	if (item->below)
2424		2355	{
2425	for (link = ob->key_values; link != NULL; link = link->next) {	2356	item = item->below;
2426	if (link->key == key) {	2357
2427	return link;	2358	while (item->inv)
		2359	item = item->inv;
		2360	}
		2361	else
		2362	item = item->env;
		2363	}
		2364
		2365	const char *
		2366	object::flag_desc (char *desc, int len) const
		2367	{
		2368	char *p = desc;
		2369	bool first = true;
		2370
		2371	*p = 0;
		2372
		2373	for (int i = 0; i < NUM_FLAGS; i++)
		2374	{
		2375	if (len <= 10) // magic constant!
		2376	{
		2377	snprintf (p, len, ",...");
		2378	break;
2428	}	2379	}
2429	}
2430
2431	return NULL;
2432	}
2433		2380
2434	/*	2381	if (flag [i])
2435	* Returns the value of op has an extra_field for key, or NULL.
2436	*
2437	* The argument doesn't need to be a shared string.
2438	*
2439	* The returned string is shared.
2440	*/
2441	const char * get_ob_key_value(const object * op, const char * const key) {
2442	key_value * link;
2443	const char * canonical_key;
2444
2445	canonical_key = shstr::find (key);
2446
2447	if (canonical_key == NULL) {
2448	/* 1. There being a field named key on any object
2449	* implies there'd be a shared string to find.
2450	* 2. Since there isn't, no object has this field.
2451	* 3. Therefore, *this* object doesn't have this field.
2452	*/	2382	{
2453	return NULL;	2383	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
2454	}	2384	len -= cnt;
2455		2385	p += cnt;
2456	/* This is copied from get_ob_key_link() above -	2386	first = false;
2457	* only 4 lines, and saves the function call overhead.
2458	*/
2459	for (link = op->key_values; link != NULL; link = link->next) {
2460	if (link->key == canonical_key) {
2461	return link->value;
2462	}	2387	}
2463	}	2388	}
		2389
		2390	return desc;
		2391	}
		2392
		2393	// return a suitable string describing an object in enough detail to find it
		2394	const char *
		2395	object::debug_desc (char *info) const
		2396	{
		2397	char flagdesc[512];
		2398	char info2[256 * 4];
		2399	char *p = info;
		2400
		2401	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s%s,flags:[%s],type:%d}",
		2402	count,
		2403	uuid.c_str (),
		2404	&name,
		2405	title ? ",title:\"" : "",
		2406	title ? (const char *)title : "",
		2407	title ? "\"" : "",
		2408	flag_desc (flagdesc, 512), type);
		2409
		2410	if (!flag[FLAG_REMOVED] && env)
		2411	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2412
		2413	if (map)
		2414	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2415
		2416	return info;
		2417	}
		2418
		2419	const char *
		2420	object::debug_desc () const
		2421	{
		2422	static char info[3][256 * 4];
		2423	static int info_idx;
		2424
		2425	return debug_desc (info [++info_idx % 3]);
		2426	}
		2427
		2428	struct region *
		2429	object::region () const
		2430	{
		2431	return map ? map->region (x, y)
		2432	: region::default_region ();
		2433	}
		2434
		2435	const materialtype_t *
		2436	object::dominant_material () const
		2437	{
		2438	if (materialtype_t *mt = name_to_material (materialname))
		2439	return mt;
		2440
		2441	return name_to_material (shstr_unknown);
		2442	}
		2443
		2444	void
		2445	object::open_container (object *new_container)
		2446	{
		2447	if (container == new_container)
2464	return NULL;	2448	return;
2465	}
2466		2449
		2450	object *old_container = container;
2467		2451
2468	/*	2452	if (old_container)
2469	* Updates the canonical_key in op to value.
2470	*
2471	* canonical_key is a shared string (value doesn't have to be).
2472	*
2473	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2474	* keys.
2475	*
2476	* Returns TRUE on success.
2477	*/
2478	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {
2479	key_value * field = NULL, *last=NULL;
2480		2453	{
2481	for (field=op->key_values; field != NULL; field=field->next) {	2454	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
2482	if (field->key != canonical_key) {	2455	return;
2483	last = field;	2456
2484	continue;	2457	#if 0
		2458	// remove the "Close old_container" object.
		2459	if (object *closer = old_container->inv)
		2460	if (closer->type == CLOSE_CON)
		2461	closer->destroy ();
		2462	#endif
		2463
		2464	// make sure the container is available
		2465	esrv_send_item (this, old_container);
		2466
		2467	old_container->flag [FLAG_APPLIED] = false;
		2468	container = 0;
		2469
		2470	// client needs item update to make it work, client bug requires this to be separate
		2471	esrv_update_item (UPD_FLAGS, this, old_container);
		2472
		2473	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", old_container->query_name ());
		2474	play_sound (sound_find ("chest_close"));
		2475	}
		2476
		2477	if (new_container)
		2478	{
		2479	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2480	return;
		2481
		2482	// TODO: this does not seem to serve any purpose anymore?
		2483	#if 0
		2484	// insert the "Close Container" object.
		2485	if (archetype *closer = new_container->other_arch)
		2486	{
		2487	object *closer = arch_to_object (new_container->other_arch);
		2488	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2489	new_container->insert (closer);
2485	}	2490	}
		2491	#endif
		2492
		2493	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", new_container->query_name ());
		2494
		2495	// make sure the container is available, client bug requires this to be separate
		2496	esrv_send_item (this, new_container);
		2497
		2498	new_container->flag [FLAG_APPLIED] = true;
		2499	container = new_container;
		2500
		2501	// client needs flag change
		2502	esrv_update_item (UPD_FLAGS, this, new_container);
		2503	esrv_send_inventory (this, new_container);
		2504	play_sound (sound_find ("chest_open"));
2486		2505	}
2487	if (value)	2506	// else if (!old_container->env && contr && contr->ns)
2488	field->value = value;	2507	// contr->ns->floorbox_reset ();
2489	else {	2508	}
2490	/* Basically, if the archetype has this key set,
2491	* we need to store the null value so when we save
2492	* it, we save the empty value so that when we load,
2493	* we get this value back again.
2494	*/
2495	if (get_ob_key_link (&op->arch->clone, canonical_key))
2496	field->value = 0;
2497	else
2498	{
2499	if (last) last->next = field->next;
2500	else op->key_values = field->next;
2501		2509
2502	delete field;	2510	object *
2503	}	2511	object::force_find (shstr_tmp name)
2504	}	2512	{
2505	return TRUE;	2513	/* cycle through his inventory to look for the MARK we want to
2506	}	2514	* place
2507	/* IF we get here, key doesn't exist */	2515	*/
		2516	for (object *tmp = inv; tmp; tmp = tmp->below)
		2517	if (tmp->type == FORCE && tmp->slaying == name)
		2518	return splay (tmp);
2508		2519
2509	/* No field, we'll have to add it. */	2520	return 0;
		2521	}
		2522
		2523	//-GPL
		2524
		2525	void
		2526	object::force_set_timer (int duration)
		2527	{
		2528	this->duration = 1;
		2529	this->speed_left = -1.f;
		2530
		2531	this->set_speed (duration ? 1.f / duration : 0.f);
		2532	}
		2533
		2534	object *
		2535	object::force_add (shstr_tmp name, int duration)
		2536	{
		2537	if (object *force = force_find (name))
		2538	force->destroy ();
		2539
		2540	object *force = get_archetype (FORCE_NAME);
		2541
		2542	force->slaying = name;
		2543	force->force_set_timer (duration);
		2544	force->flag [FLAG_APPLIED] = true;
		2545
		2546	return insert (force);
		2547	}
		2548
		2549	void
		2550	object::play_sound (faceidx sound) const
		2551	{
		2552	if (!sound)
		2553	return;
		2554
		2555	if (is_on_map ())
		2556	map->play_sound (sound, x, y);
		2557	else if (object *pl = in_player ())
		2558	pl->contr->play_sound (sound);
		2559	}
		2560
		2561	void
		2562	object::say_msg (const char *msg) const
		2563	{
		2564	if (is_on_map ())
		2565	map->say_msg (msg, x, y);
		2566	else if (object *pl = in_player ())
		2567	pl->contr->play_sound (sound);
		2568	}
		2569
		2570	void
		2571	object::make_noise ()
		2572	{
		2573	// we do not model noise in the map, so instead put
		2574	// a temporary light into the noise source
		2575	// could use the map instead, but that's less reliable for our
		2576	// goal, which is to make invisibility a bit harder to exploit
		2577
		2578	// currently only works sensibly for players
		2579	if (!is_player ())
		2580	return;
		2581
		2582	// find old force, or create new one
		2583	object *force = force_find (shstr_noise_force);
		2584
		2585	if (force)
		2586	force->speed_left = -1.f; // patch old speed up
		2587	else
2510		2588	{
2511	if (!add_key) {	2589	force = archetype::get (shstr_noise_force);
2512	return FALSE;	2590
2513	}	2591	force->slaying = shstr_noise_force;
2514	/* There isn't any good reason to store a null	2592	force->stats.food = 1;
2515	* value in the key/value list. If the archetype has	2593	force->speed_left = -1.f;
2516	* this key, then we should also have it, so shouldn't	2594
2517	* be here. If user wants to store empty strings,	2595	force->set_speed (1.f / 4.f);
2518	* should pass in ""	2596	force->flag [FLAG_IS_USED_UP] = true;
2519	*/	2597	force->flag [FLAG_APPLIED] = true;
2520	if (value == NULL) return TRUE;	2598
		2599	insert (force);
2521		2600	}
2522	field = new key_value;
2523
2524	field->key = canonical_key;
2525	field->value = value;
2526	/* Usual prepend-addition. */
2527	field->next = op->key_values;
2528	op->key_values = field;
2529
2530	return TRUE;
2531	}	2601	}
2532		2602
2533	/*
2534	* Updates the key in op to value.
2535	*
2536	* If add_key is FALSE, this will only update existing keys,
2537	* and not add new ones.
2538	* In general, should be little reason FALSE is ever passed in for add_key
2539	*
2540	* Returns TRUE on success.
2541	*/
2542	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)
2543	{
2544	shstr key_ (key);
2545	return set_ob_key_value_s (op, key_, value, add_key);
2546	}

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