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Comparing deliantra/server/common/object.C (file contents):
Revision 1.18 by root, Fri Sep 8 16:51:42 2006 UTC vs.
Revision 1.209 by root, Mon Apr 21 06:35:26 2008 UTC

1	/*	1	/*
2	* static char *rcsid_object_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: object.C,v 1.18 2006/09/08 16:51:42 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2001 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
11		7	*
12	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify
13	it under the terms of the GNU General Public License as published by	9	* it under the terms of the GNU General Public License as published by
14	the Free Software Foundation; either version 2 of the License, or	10	* the Free Software Foundation, either version 3 of the License, or
15	(at your option) any later version.	11	* (at your option) any later version.
16		12	*
17	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.	16	* GNU General Public License for more details.
21		17	*
22	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	*
25		21	* The authors can be reached via e-mail to <support@deliantra.net>
26	The authors can be reached via e-mail at crossfire-devel@real-time.com
27	*/	22	*/
28		23
29	/* Eneq(@csd.uu.se): Added weight-modifiers in environment of objects.
30	sub/add_weight will transcend the environment updating the carrying
31	variable. */
32	#include <global.h>	24	#include <global.h>
33	#ifndef WIN32 /* ---win32 exclude headers */
34	#include <stdio.h>	25	#include <stdio.h>
35	#include <sys/types.h>	26	#include <sys/types.h>
36	#include <sys/uio.h>	27	#include <sys/uio.h>
37	#endif /* win32 */
38	#include <object.h>	28	#include <object.h>
39	#include <funcpoint.h>	29	#include <funcpoint.h>
40	#include <skills.h>	30	#include <sproto.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
		39	objectvec objects;
		40	activevec actives;
		41
47	short freearr_x[SIZEOFFREE]=	42	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,	43	0,
		44	0, 1, 1, 1, 0, -1, -1, -1,
		45	0, 1, 2, 2, 2, 2, 2, 1, 0, -1, -2, -2, -2, -2, -2, -1,
49	0,1,2,3,3,3,3,3,3,3,2,1,0,-1,-2,-3,-3,-3,-3,-3,-3,-3,-2,-1};	46	0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1
		47	};
50	short freearr_y[SIZEOFFREE]=	48	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,	49	0,
		50	-1, -1, 0, 1, 1, 1, 0, -1,
		51	-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};	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
		53	};
53	int maxfree[SIZEOFFREE]=	54	int maxfree[SIZEOFFREE] = {
54	{0,9,10,13,14,17,18,21,22,25,26,27,30,31,32,33,36,37,39,39,42,43,44,45,	55	0,
		56	9, 10, 13, 14, 17, 18, 21, 22,
		57	25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48,
55	48,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};	58	49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49
		59	};
56	int freedir[SIZEOFFREE]= {	60	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,	61	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};	62	1, 2, 3, 4, 5, 6, 7, 8,
		63	1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8,
		64	1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 8, 8, 8
		65	};
59		66
		67	static void
		68	write_uuid (uval64 skip, bool sync)
		69	{
		70	CALL_BEGIN (2);
		71	CALL_ARG_SV (newSVval64 (skip));
		72	CALL_ARG_SV (boolSV (sync));
		73	CALL_CALL ("cf::write_uuid", G_DISCARD);
		74	CALL_END;
		75	}
		76
		77	static void
		78	read_uuid (void)
		79	{
		80	char filename[MAX_BUF];
		81
		82	sprintf (filename, "%s/uuid", settings.localdir);
		83
		84	seq_next_save = 0;
		85
		86	FILE *fp;
		87
		88	if (!(fp = fopen (filename, "r")))
		89	{
		90	if (errno == ENOENT)
		91	{
		92	LOG (llevInfo, "RESET uid to 1\n");
		93	UUID::cur.seq = 0;
		94	write_uuid (UUID_GAP, true);
		95	return;
		96	}
		97
		98	LOG (llevError, "FATAL: cannot open %s for reading!\n", filename);
		99	_exit (1);
		100	}
		101
		102	UUID::BUF buf;
		103	buf[0] = 0;
		104	fgets (buf, sizeof (buf), fp);
		105
		106	if (!UUID::cur.parse (buf))
		107	{
		108	LOG (llevError, "FATAL: error reading uid from %s (%s)!\n", filename, buf);
		109	_exit (1);
		110	}
		111
		112	LOG (llevDebug, "read UUID: %s\n", UUID::cur.c_str ());
		113
		114	write_uuid (UUID_GAP, true);
		115	fclose (fp);
		116	}
		117
		118	UUID
		119	UUID::gen ()
		120	{
		121	UUID uid;
		122
		123	uid.seq = ++cur.seq;
		124
		125	if (expect_false (cur.seq >= seq_next_save))
		126	{
		127	seq_next_save = UUID::cur.seq + (UUID_GAP >> 1);
		128	write_uuid (UUID_GAP, false);
		129	}
		130
		131
		132	return uid;
		133	}
		134
		135	void
		136	UUID::init ()
		137	{
		138	read_uuid ();
		139	}
60		140
61	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */	141	/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
		142	static bool
62	static int compare_ob_value_lists_one(const object * wants, const object * has) {	143	compare_ob_value_lists_one (const object *wants, const object *has)
		144	{
63	key_value * wants_field;	145	key_value *wants_field;
64		146
65	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both	147	/* n-squared behaviour (see get_ob_key_link()), but I'm hoping both
66	* objects with lists are rare, and lists stay short. If not, use a	148	* objects with lists are rare, and lists stay short. If not, use a
67	* different structure or at least keep the lists sorted...	149	* different structure or at least keep the lists sorted...
68	*/	150	*/
69		151
70	/* For each field in wants, */	152	/* For each field in wants, */
71	for (wants_field = wants->key_values; wants_field != NULL; wants_field = wants_field->next) {	153	for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next)
		154	{
72	key_value * has_field;	155	key_value *has_field;
73		156
74	/* Look for a field in has with the same key. */	157	/* Look for a field in has with the same key. */
75	has_field = get_ob_key_link(has, wants_field->key);	158	has_field = get_ob_key_link (has, wants_field->key);
76		159
77	if (has_field == NULL) {	160	if (!has_field)
78	/* No field with that name. */	161	return 0; /* No field with that name. */
79	return FALSE;	162
80	}
81
82	/* Found the matching field. */	163	/* Found the matching field. */
83	if (has_field->value != wants_field->value) {	164	if (has_field->value != wants_field->value)
84	/* Values don't match, so this half of the comparison is false. */	165	return 0; /* Values don't match, so this half of the comparison is false. */
85	return FALSE;	166
86	}
87
88	/* If we get here, we found a match. Now for the next field in wants. */	167	/* If we get here, we found a match. Now for the next field in wants. */
89	}
90		168	}
		169
91	/* If we get here, every field in wants has a matching field in has. */	170	/* If we get here, every field in wants has a matching field in has. */
92	return TRUE;	171	return 1;
93	}	172	}
94		173
95	/* Returns TRUE if ob1 has the same key_values as ob2. */	174	/* Returns TRUE if ob1 has the same key_values as ob2. */
		175	static bool
96	static int compare_ob_value_lists(const object * ob1, const object * ob2) {	176	compare_ob_value_lists (const object *ob1, const object *ob2)
		177	{
97	/* However, there may be fields in has which aren't partnered in wants,	178	/* However, there may be fields in has which aren't partnered in wants,
98	* so we need to run the comparison *twice*. :(	179	* so we need to run the comparison *twice*. :(
99	*/	180	*/
100	return compare_ob_value_lists_one(ob1, ob2) && compare_ob_value_lists_one(ob2, ob1);	181	return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1);
101	}	182	}
102		183
103	/* Function examines the 2 objects given to it, and returns true if	184	/* Function examines the 2 objects given to it, and returns true if
104	* they can be merged together.	185	* they can be merged together.
105	*	186	*
106	* Note that this function appears a lot longer than the macro it	187	* Note that this function appears a lot longer than the macro it
107	* replaces - this is mostly for clarity - a decent compiler should hopefully	188	* replaces - this is mostly for clarity - a decent compiler should hopefully
108	* reduce this to the same efficiency.	189	* reduce this to the same efficiency.
109	*	190	*
110	* Check nrof variable *before* calling CAN_MERGE()	191	* Check nrof variable *before* calling can_merge()
111	*	192	*
112	* Improvements made with merge: Better checking on potion, and also	193	* Improvements made with merge: Better checking on potion, and also
113	* check weight	194	* check weight
114	*/	195	*/
115
116	bool
117	object::can_merge (object *ob1, object *ob2)	196	bool object::can_merge_slow (object *ob1, object *ob2)
118	{	197	{
119	/* A couple quicksanity checks */	198	/* A couple quicksanity checks */
120	if ((ob1 == ob2) || (ob1->type != ob2->type))	199	if (ob1 == ob2
		200	|| ob1->type != ob2->type
		201	|| ob1->speed != ob2->speed
		202	|| ob1->value != ob2->value
		203	|| ob1->name != ob2->name)
121	return 0;	204	return 0;
122		205
123	if (ob1->speed != ob2->speed)	206	/* Do not merge objects if nrof would overflow. First part checks
		207	* for unsigned overflow (2c), second part checks whether the result
		208	* would fit into a 32 bit signed int, which is often used to hold
		209	* nrof values.
		210	*/
		211	if (~ob1->nrof < ob2->nrof || ob1->nrof + ob2->nrof > (1UL << 31))
124	return 0;	212	return 0;
125		213
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.	214	/* 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	215	* 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	216	* 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	217	* are not equal - just if it has been identified, the been_applied
137	* flags lose any meaning.	218	* flags lose any meaning.
138	*/	219	*/
139	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))	220	if (QUERY_FLAG (ob1, FLAG_IDENTIFIED))
140	SET_FLAG (ob1, FLAG_BEEN_APPLIED);	221	SET_FLAG (ob1, FLAG_BEEN_APPLIED);
141		222
142	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))	223	if (QUERY_FLAG (ob2, FLAG_IDENTIFIED))
143	SET_FLAG (ob2, FLAG_BEEN_APPLIED);	224	SET_FLAG (ob2, FLAG_BEEN_APPLIED);
144		225
145		226	if (ob1->arch->name != ob2->arch->name
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) ||	227	|| ob1->name != ob2->name
156	(ob1->title != ob2->title) ||	228	|| ob1->title != ob2->title
157	(ob1->msg != ob2->msg) ||	229	|| ob1->msg != ob2->msg
158	(ob1->weight != ob2->weight) ||	230	|| 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) ||	231	|| ob1->attacktype != ob2->attacktype
162	(ob1->magic != ob2->magic) ||	232	|| ob1->magic != ob2->magic
163	(ob1->slaying != ob2->slaying) ||	233	|| ob1->slaying != ob2->slaying
164	(ob1->skill != ob2->skill) ||	234	|| ob1->skill != ob2->skill
165	(ob1->value != ob2->value) ||	235	|| ob1->value != ob2->value
166	(ob1->animation_id != ob2->animation_id) ||	236	|| ob1->animation_id != ob2->animation_id
167	(ob1->client_type != ob2->client_type) ||	237	|| ob1->client_type != ob2->client_type
168	(ob1->materialname != ob2->materialname) ||	238	|| ob1->materialname != ob2->materialname
169	(ob1->lore != ob2->lore) ||	239	|| ob1->lore != ob2->lore
170	(ob1->subtype != ob2->subtype) ||	240	|| ob1->subtype != ob2->subtype
171	(ob1->move_type != ob2->move_type) ||	241	|| ob1->move_type != ob2->move_type
172	(ob1->move_block != ob2->move_block) ||	242	|| ob1->move_block != ob2->move_block
173	(ob1->move_allow != ob2->move_allow) ||	243	|| ob1->move_allow != ob2->move_allow
174	(ob1->move_on != ob2->move_on) ||	244	|| ob1->move_on != ob2->move_on
175	(ob1->move_off != ob2->move_off) ||	245	|| ob1->move_off != ob2->move_off
176	(ob1->move_slow != ob2->move_slow) ||	246	|| ob1->move_slow != ob2->move_slow
177	(ob1->move_slow_penalty != ob2->move_slow_penalty))	247	|| ob1->move_slow_penalty != ob2->move_slow_penalty
		248	|| memcmp (&ob1->resist, &ob2->resist, sizeof (ob1->resist))
		249	|| memcmp (&ob1->stats , &ob2->stats , sizeof (ob1->stats)))
178	return 0;	250	return 0;
179		251
		252	if ((ob1->flag ^ ob2->flag)
		253	.reset (FLAG_INV_LOCKED)
		254	.reset (FLAG_CLIENT_SENT)
		255	.reset (FLAG_REMOVED)
		256	.any ())
		257	return 0;
		258
180	/* This is really a spellbook check - really, we should	259	/* This is really a spellbook check - we should in general
181	* check all objects in the inventory.	260	* not merge objects with real inventories, as splitting them
		261	* is hard.
182	*/	262	*/
183	if (ob1->inv || ob2->inv)	263	if (ob1->inv || ob2->inv)
184	{	264	{
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))	265	if (!(ob1->inv && ob2->inv))
191	return 0;	266	return 0; /* inventories differ in length */
		267
		268	if (ob1->inv->below || ob2->inv->below)
		269	return 0; /* more than one object in inv */
		270
		271	if (!object::can_merge (ob1->inv, ob2->inv))
		272	return 0; /* inventory objects differ */
192		273
193	/* inventory ok - still need to check rest of this object to see	274	/* inventory ok - still need to check rest of this object to see
194	* if it is valid.	275	* if it is valid.
195	*/	276	*/
196	}	277	}
…		…
204		285
205	/* Note sure why the following is the case - either the object has to	286	/* 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	287	* be animated or have a very low speed. Is this an attempted monster
207	* check?	288	* check?
208	*/	289	*/
209	if (!QUERY_FLAG (ob1, FLAG_ANIMATE)	290	if (!QUERY_FLAG (ob1, FLAG_ANIMATE) && ob1->has_active_speed ())
210	&& FABS ((ob1)->speed) > MIN_ACTIVE_SPEED)
211	return 0;	291	return 0;
212		292
213	switch (ob1->type)	293	switch (ob1->type)
214	{	294	{
215	case SCROLL:	295	case SCROLL:
216	if (ob1->level != ob2->level)	296	if (ob1->level != ob2->level)
217	return 0;	297	return 0;
218	break;	298	break;
219	}	299	}
220		300
221	if (ob1->key_values != NULL || ob2->key_values != NULL)	301	if (ob1->key_values || ob2->key_values)
222	{	302	{
223	/* At least one of these has key_values. */	303	/* At least one of these has key_values. */
224	if ((ob1->key_values == NULL) != (ob2->key_values == NULL))	304	if ((!ob1->key_values) != (!ob2->key_values))
225	/* One has fields, but the other one doesn't. */	305	return 0; /* One has fields, but the other one doesn't. */
226	return 0;	306
227	else if (!compare_ob_value_lists (ob1, ob2))	307	if (!compare_ob_value_lists (ob1, ob2))
228	return 0;	308	return 0;
229	}	309	}
230		310
231	//TODO: generate an event or call into perl for additional checks
232	if (ob1->self || ob2->self)	311	if (ob1->self || ob2->self)
233	{	312	{
234	ob1->optimise ();	313	ob1->optimise ();
235	ob2->optimise ();	314	ob2->optimise ();
236		315
237	if (ob1->self || ob2->self)	316	if (ob1->self || ob2->self)
238	return 0;	317	{
		318	int k1 = ob1->self ? HvTOTALKEYS (ob1->self) : 0;
		319	int k2 = ob2->self ? HvTOTALKEYS (ob2->self) : 0;
		320
		321	if (k1 != k2)
		322	return 0;
		323
		324	if (k1 == 0)
		325	return 1;
		326
		327	if (!cfperl_can_merge (ob1, ob2))
		328	return 0;
		329	}
239	}	330	}
240		331
241	/* Everything passes, must be OK. */	332	/* Everything passes, must be OK. */
242	return 1;	333	return 1;
243	}	334	}
		335
		336	// adjust weight per container type ("of holding")
		337	static sint32
		338	weight_adjust (object *op, sint32 weight)
		339	{
		340	return op->type == CONTAINER
		341	? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
		342	: weight;
		343	}
		344
244	/*	345	/*
		346	* adjust_weight(object, weight) adds the specified weight to an object,
		347	* and also updates how much the environment(s) is/are carrying.
		348	*/
		349	static void
		350	adjust_weight (object *op, sint32 weight)
		351	{
		352	while (op)
		353	{
		354	weight = weight_adjust (op, weight);
		355
		356	op->carrying += weight;
		357	op = op->env;
		358	}
		359	}
		360
		361	/*
245	* sum_weight() is a recursive function which calculates the weight	362	* this is a recursive function which calculates the weight
246	* an object is carrying. It goes through in figures out how much	363	* an object is carrying. It goes through op and figures out how much
247	* containers are carrying, and sums it up.	364	* containers are carrying, and sums it up.
248	*/	365	*/
249	signed long sum_weight(object *op) {	366	void
250	signed long sum;	367	object::update_weight ()
251	object *inv;	368	{
252	for(sum = 0, inv = op->inv; inv != NULL; inv = inv->below) {	369	sint32 sum = 0;
253	if (inv->inv)
254	sum_weight(inv);
255	sum += inv->carrying + inv->weight * (inv->nrof ? inv->nrof : 1);
256	}
257	if (op->type == CONTAINER && op->stats.Str)
258	sum = (sum * (100 - op->stats.Str))/100;
259	if(op->carrying != sum)
260	op->carrying = sum;
261	return sum;
262	}
263		370
264	/**	371	for (object *op = inv; op; op = op->below)
265	* Return the outermost environment object for a given object.	372	{
266	*/
267
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)	373	if (op->inv)
283	op->env = NULL;	374	op->update_weight ();
284	return op;
285	}
286		375
287	/*	376	sum += op->total_weight ();
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	}	377	}
332	#endif
333	}
334		378
335	/*	379	carrying = weight_adjust (this, sum);
336	* Dumps an object. Returns output in the static global errmsg array.	380	}
337	*/
338		381
		382	/*
		383	* Used by: Server DM commands: dumpbelow, dump. Some error messages.
		384	*/
		385	char *
339	void dump_object(object *op) {	386	dump_object (object *op)
340	if(op==NULL) {	387	{
341	strcpy(errmsg,"[NULL pointer]");	388	if (!op)
342	return;	389	return strdup ("[NULLOBJ]");
343	}
344	errmsg[0]='\0';
345	dump_object2(op);
346	}
347		390
348	void dump_all_objects(void) {	391	object_freezer freezer;
349	object *op;	392	op->write (freezer);
350	for(op=objects;op!=NULL;op=op->next) {	393	return freezer.as_string ();
351	dump_object(op);
352	fprintf(logfile, "Object %d\n:%s\n", op->count, errmsg);
353	}
354	}	394	}
355		395
356	/*	396	/*
357	* get_nearest_part(multi-object, object 2) returns the part of the	397	* get_nearest_part(multi-object, object 2) returns the part of the
358	* multi-object 1 which is closest to the second object.	398	* multi-object 1 which is closest to the second object.
359	* If it's not a multi-object, it is returned.	399	* If it's not a multi-object, it is returned.
360	*/	400	*/
361		401	object *
362	object *get_nearest_part(object *op, const object *pl) {	402	get_nearest_part (object *op, const object *pl)
		403	{
363	object *tmp,*closest;	404	object *tmp, *closest;
364	int last_dist,i;	405	int last_dist, i;
		406
365	if(op->more==NULL)	407	if (!op->more)
366	return op;	408	return op;
		409
367	for(last_dist=distance(op,pl),closest=op,tmp=op->more;tmp!=NULL;tmp=tmp->more)	410	for (last_dist = distance (op, pl), closest = op, tmp = op->more;
		411	tmp;
		412	tmp = tmp->more)
368	if((i=distance(tmp,pl))<last_dist)	413	if ((i = distance (tmp, pl)) < last_dist)
369	closest=tmp,last_dist=i;	414	closest = tmp, last_dist = i;
		415
370	return closest;	416	return closest;
371	}	417	}
372		418
373	/*	419	/*
374	* Returns the object which has the count-variable equal to the argument.	420	* Returns the object which has the count-variable equal to the argument.
		421	* VERRRY slow.
375	*/	422	*/
376		423	object *
377	object *find_object(tag_t i) {	424	find_object (tag_t i)
378	object *op;	425	{
379	for(op=objects;op!=NULL;op=op->next)	426	for_all_objects (op)
380	if(op->count==i)	427	if (op->count == i)
381	break;
382	return op;	428	return op;
		429
		430	return 0;
383	}	431	}
384		432
385	/*	433	/*
386	* Returns the first object which has a name equal to the argument.	434	* Returns the first object which has a name equal to the argument.
387	* Used only by the patch command, but not all that useful.	435	* Used only by the patch command, but not all that useful.
388	* Enables features like "patch <name-of-other-player> food 999"	436	* Enables features like "patch <name-of-other-player> food 999"
389	*/	437	*/
390		438	object *
391	object *find_object_name(const char *str) {	439	find_object_name (const char *str)
392	const char *name = shstr::find (str);	440	{
		441	shstr_cmp str_ (str);
393	object *op;	442	object *op;
394	for(op=objects;op!=NULL;op=op->next)	443
		444	for_all_objects (op)
395	if(&op->name == name)	445	if (op->name == str_)
396	break;	446	break;
397		447
398	return op;	448	return op;
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	}	449	}
440		450
441	/*	451	/*
442	* Sets the owner and sets the skill and exp pointers to owner's current	452	* Sets the owner and sets the skill and exp pointers to owner's current
443	* skill and experience objects.	453	* skill and experience objects.
		454	* ACTUALLY NO! investigate! TODO
444	*/	455	*/
445	void set_owner (object *op, object *owner)	456	void
		457	object::set_owner (object *owner)
446	{	458	{
447	if(owner==NULL||op==NULL)	459	// allow objects which own objects
		460	if (owner)
		461	while (owner->owner)
		462	owner = owner->owner;
		463
		464	if (flag [FLAG_FREED])
		465	{
		466	LOG (llevError | logBacktrace, "tried to set owner of %s to %s\n", debug_desc (), owner->debug_desc ());
448	return;	467	return;
		468	}
449		469
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;	470	this->owner = owner;
466
467	op->ownercount=owner->count;
468	owner->refcount++;
469
470	}	471	}
471		472
472	/* Set the owner to clone's current owner and set the skill and experience	473	int
473	* objects to clone's objects (typically those objects that where the owner's	474	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	{	475	{
484	object *owner = get_owner (clone);	476	if (type == SKILL)
485	if (owner == NULL) {	477	{
486	/* players don't have owners - they own themselves. Update	478	if (IS_COMBAT_SKILL (subtype)) return slot_combat;
487	* as appropriate.	479	if (IS_RANGED_SKILL (subtype)) return slot_ranged;
		480	}
		481	else
		482	{
		483	if (slot [body_combat].info) return slot_combat;
		484	if (slot [body_range ].info) return slot_ranged;
		485	}
		486
		487	return slot_none;
		488	}
		489
		490	bool
		491	object::change_weapon (object *ob)
		492	{
		493	if (current_weapon == ob)
		494	return true;
		495
		496	if (chosen_skill)
		497	chosen_skill->flag [FLAG_APPLIED] = false;
		498
		499	current_weapon = ob;
		500	chosen_skill = !ob || ob->type == SKILL ? ob : find_skill_by_name (this, ob->skill);
		501
		502	if (chosen_skill)
		503	chosen_skill->flag [FLAG_APPLIED] = true;
		504
		505	update_stats ();
		506
		507	if (ob)
		508	{
		509	// now check wether any body locations became invalid, in which case
		510	// we cannot apply the weapon at the moment.
		511	for (int i = 0; i < NUM_BODY_LOCATIONS; ++i)
		512	if (slot[i].used < 0)
488	*/	513	{
489	if (clone->type == PLAYER) owner=clone;	514	current_weapon = chosen_skill = 0;
490	else return;	515	update_stats ();
		516
		517	new_draw_info_format (NDI_UNIQUE, 0, this,
		518	"You try to balance all your items at once, "
		519	"but the %s is just too much for your body. "
		520	"[You need to unapply some items first.]", &ob->name);
		521	return false;
		522	}
		523
		524	//new_draw_info_format (NDI_UNIQUE, 0, this, "You switch to your %s.", &ob->name);
		525	}
		526	else
		527	;//new_draw_info_format (NDI_UNIQUE, 0, this, "You unwield your weapons.");
		528
		529	if (ob && !ob->flag [FLAG_APPLIED] && ob->type != SPELL)
491	}	530	{
492	set_owner(op, owner);	531	LOG (llevError | logBacktrace, "%s changed to unapplied weapon %s",
		532	&name, ob->debug_desc ());
		533	return false;
		534	}
493		535
		536	return true;
494	}	537	}
495		538
496	/* Zero the key_values on op, decrementing the shared-string	539	/* Zero the key_values on op, decrementing the shared-string
497	* refcounts and freeing the links.	540	* refcounts and freeing the links.
498	*/	541	*/
		542	static void
499	static void free_key_values(object * op)	543	free_key_values (object *op)
500	{	544	{
501	for (key_value *i = op->key_values; i != 0; )	545	for (key_value *i = op->key_values; i; )
502	{	546	{
503	key_value *next = i->next;	547	key_value *next = i->next;
504	delete i;	548	delete i;
		549
505	i = next;	550	i = next;
506	}	551	}
507		552
508	op->key_values = 0;	553	op->key_values = 0;
509	}	554	}
510		555
511	void object::clear ()	556	object &
		557	object::operator =(const object &src)
512	{	558	{
513	attachable_base::clear ();	559	bool is_freed = flag [FLAG_FREED];
		560	bool is_removed = flag [FLAG_REMOVED];
514		561
515	free_key_values (this);	562	*(object_copy *)this = src;
516		563
517	name = 0;	564	flag [FLAG_FREED] = is_freed;
518	name_pl = 0;	565	flag [FLAG_REMOVED] = is_removed;
519	title = 0;
520	race = 0;
521	slaying = 0;
522	skill = 0;
523	msg = 0;
524	lore = 0;
525	custom_name = 0;
526	materialname = 0;
527
528	memset (static_cast<object_pod *>(this), 0, sizeof (object_pod));
529
530	SET_FLAG (this, FLAG_REMOVED);
531	}
532
533	void object::clone (object *destination)
534	{
535	*(object_copy *)destination = *(object_copy *)this;
536	*(object_pod *)destination = *(object_pod *)this;
537
538	if (self || cb)
539	INVOKE_OBJECT (CLONE, this, ARG_OBJECT (destination));
540	}
541
542	/*
543	* clear_object() frees everything allocated by an object, and also
544	* clears all variables and flags to default settings.
545	*/
546
547	void clear_object (object *op)
548	{
549	op->clear ();
550
551	op->contr = NULL;
552	op->below = NULL;
553	op->above = NULL;
554	op->inv = NULL;
555	op->container=NULL;
556	op->env=NULL;
557	op->more=NULL;
558	op->head=NULL;
559	op->map=NULL;
560	op->refcount=0;
561	op->active_next = NULL;
562	op->active_prev = NULL;
563	/* What is not cleared is next, prev, and count */
564
565	op->expmul = 1.0;
566	op->face = blank_face;
567	op->attacked_by_count = -1;
568
569	if (settings.casting_time)
570	op->casting_time = -1;
571	}
572
573	/*
574	* copy object first frees everything allocated by the second object,
575	* and then copies the contends of the first object into the second
576	* object, allocating what needs to be allocated. Basically, any
577	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
578	* if the first object is freed, the pointers in the new object
579	* will point at garbage.
580	*/
581
582	void copy_object (object *op2, object *op)
583	{
584	bool is_freed = QUERY_FLAG (op, FLAG_FREED);
585	bool is_removed = QUERY_FLAG (op, FLAG_REMOVED);
586
587	op2->clone (op);
588
589	if (is_freed) SET_FLAG (op, FLAG_FREED);
590	if (is_removed) SET_FLAG (op, FLAG_REMOVED);
591
592	if (op2->speed < 0)
593	op->speed_left = op2->speed_left - RANDOM() % 200 / 100.0;
594		566
595	/* Copy over key_values, if any. */	567	/* Copy over key_values, if any. */
596	if (op2->key_values != NULL)	568	if (src.key_values)
597	{	569	{
598	key_value *tail = NULL;	570	key_value *tail = 0;
599	key_value *i;
600
601	op->key_values = NULL;	571	key_values = 0;
602		572
603	for (i = op2->key_values; i != NULL; i = i->next)	573	for (key_value *i = src.key_values; i; i = i->next)
604	{	574	{
605	key_value *new_link = new key_value;	575	key_value *new_link = new key_value;
606		576
607	new_link->next = NULL;	577	new_link->next = 0;
608	new_link->key = i->key;	578	new_link->key = i->key;
609	new_link->value = i->value;	579	new_link->value = i->value;
610		580
611	/* Try and be clever here, too. */	581	/* Try and be clever here, too. */
612	if (op->key_values == NULL)	582	if (!key_values)
613	{	583	{
614	op->key_values = new_link;	584	key_values = new_link;
615	tail = new_link;	585	tail = new_link;
616	}	586	}
617	else	587	else
618	{	588	{
619	tail->next = new_link;	589	tail->next = new_link;
620	tail = new_link;	590	tail = new_link;
621	}	591	}
622	}	592	}
623	}	593	}
624
625	update_ob_speed (op);
626	}	594	}
627		595
628	/*	596	/*
629	* get_object() grabs an object from the list of unused objects, makes	597	* copy_to first frees everything allocated by the dst object,
630	* sure it is initialised, and returns it.	598	* and then copies the contents of itself into the second
631	* If there are no free objects, expand_objects() is called to get more.	599	* object, allocating what needs to be allocated. Basically, any
		600	* data that is malloc'd needs to be re-malloc/copied. Otherwise,
		601	* if the first object is freed, the pointers in the new object
		602	* will point at garbage.
		603	*/
		604	void
		605	object::copy_to (object *dst)
		606	{
		607	*dst = *this;
		608
		609	if (speed < 0)
		610	dst->speed_left -= rndm ();
		611
		612	dst->set_speed (dst->speed);
		613	}
		614
		615	void
		616	object::instantiate ()
		617	{
		618	if (!uuid.seq) // HACK
		619	uuid = UUID::gen ();
		620
		621	speed_left = -0.1f;
		622	/* copy the body_info to the body_used - this is only really
		623	* need for monsters, but doesn't hurt to do it for everything.
		624	* by doing so, when a monster is created, it has good starting
		625	* values for the body_used info, so when items are created
		626	* for it, they can be properly equipped.
632	*/	627	*/
		628	for (int i = NUM_BODY_LOCATIONS; i--; )
		629	slot[i].used = slot[i].info;
633		630
634	object *get_object ()	631	attachable::instantiate ();
635	{	632	}
636	object *op = new object;
637		633
638	op->count = ++ob_count;	634	object *
639		635	object::clone ()
640	op->next = objects;	636	{
641		637	object *neu = create ();
642	if (objects)	638	copy_to (neu);
643	objects->prev = op;
644
645	objects = op;
646
647	SET_FLAG (op, FLAG_REMOVED);
648
649	op->expmul = 1.0;
650	op->face = blank_face;
651	op->attacked_by_count = -1;
652
653	return op;	639	return neu;
654	}	640	}
655		641
656	/*	642	/*
657	* If an object with the IS_TURNABLE() flag needs to be turned due	643	* If an object with the IS_TURNABLE() flag needs to be turned due
658	* to the closest player being on the other side, this function can	644	* to the closest player being on the other side, this function can
659	* be called to update the face variable, _and_ how it looks on the map.	645	* be called to update the face variable, _and_ how it looks on the map.
660	*/	646	*/
661		647	void
662	void update_turn_face(object *op) {	648	update_turn_face (object *op)
		649	{
663	if(!QUERY_FLAG(op,FLAG_IS_TURNABLE)||op->arch==NULL)	650	if (!QUERY_FLAG (op, FLAG_IS_TURNABLE) || !op->arch)
664	return;	651	return;
		652
665	SET_ANIMATION(op, op->direction);	653	SET_ANIMATION (op, op->direction);
666	update_object(op,UP_OBJ_FACE);	654	update_object (op, UP_OBJ_FACE);
667	}	655	}
668		656
669	/*	657	/*
670	* Updates the speed of an object. If the speed changes from 0 to another	658	* Updates the speed of an object. If the speed changes from 0 to another
671	* value, or vice versa, then add/remove the object from the active list.	659	* value, or vice versa, then add/remove the object from the active list.
672	* This function needs to be called whenever the speed of an object changes.	660	* This function needs to be called whenever the speed of an object changes.
673	*/	661	*/
674		662	void
675	void update_ob_speed(object *op) {	663	object::set_speed (float speed)
676	extern int arch_init;	664	{
677		665	if (flag [FLAG_FREED] && speed)
678	/* No reason putting the archetypes objects on the speed list,	666	{
679	* since they never really need to be updated.
680	*/
681
682	if (QUERY_FLAG(op, FLAG_FREED) && op->speed) {
683	LOG(llevError,"Object %s is freed but has speed.\n", &op->name);	667	LOG (llevError, "Object %s is freed but has speed.\n", &name);
684	#ifdef MANY_CORES
685	abort();
686	#else
687	op->speed = 0;	668	speed = 0;
688	#endif
689	}	669	}
690	if (arch_init) {
691	return;
692	}
693	if (FABS(op->speed)>MIN_ACTIVE_SPEED) {
694	/* If already on active list, don't do anything */
695	if (op->active_next || op->active_prev || op==active_objects)
696	return;
697		670
698	/* process_events() expects us to insert the object at the beginning	671	this->speed = speed;
699	* of the list. */	672
700	op->active_next = active_objects;	673	if (has_active_speed ())
701	if (op->active_next!=NULL)	674	activate ();
702	op->active_next->active_prev = op;
703	active_objects = op;
704	}
705	else {	675	else
706	/* If not on the active list, nothing needs to be done */	676	deactivate ();
707	if (!op->active_next && !op->active_prev && op!=active_objects)
708	return;
709
710	if (op->active_prev==NULL) {
711	active_objects = op->active_next;
712	if (op->active_next!=NULL)
713	op->active_next->active_prev = NULL;
714	}
715	else {
716	op->active_prev->active_next = op->active_next;
717	if (op->active_next)
718	op->active_next->active_prev = op->active_prev;
719	}
720	op->active_next = NULL;
721	op->active_prev = NULL;
722	}
723	}	677	}
724		678
725	/* This function removes object 'op' from the list of active
726	* objects.
727	* This should only be used for style maps or other such
728	* reference maps where you don't want an object that isn't
729	* in play chewing up cpu time getting processed.
730	* The reverse of this is to call update_ob_speed, which
731	* will do the right thing based on the speed of the object.
732	*/
733	void remove_from_active_list(object *op)
734	{
735	/* If not on the active list, nothing needs to be done */
736	if (!op->active_next && !op->active_prev && op!=active_objects)
737	return;
738
739	if (op->active_prev==NULL) {
740	active_objects = op->active_next;
741	if (op->active_next!=NULL)
742	op->active_next->active_prev = NULL;
743	}
744	else {
745	op->active_prev->active_next = op->active_next;
746	if (op->active_next)
747	op->active_next->active_prev = op->active_prev;
748	}
749	op->active_next = NULL;
750	op->active_prev = NULL;
751	}
752
753	/*	679	/*
754	* update_object() updates the array which represents the map.	680	* update_object() updates the the map.
755	* It takes into account invisible objects (and represent squares covered	681	* It takes into account invisible objects (and represent squares covered
756	* by invisible objects by whatever is below them (unless it's another	682	* by invisible objects by whatever is below them (unless it's another
757	* invisible object, etc...)	683	* invisible object, etc...)
758	* If the object being updated is beneath a player, the look-window	684	* If the object being updated is beneath a player, the look-window
759	* of that player is updated (this might be a suboptimal way of	685	* of that player is updated (this might be a suboptimal way of
760	* updating that window, though, since update_object() is called _often_)	686	* updating that window, though, since update_object() is called _often_)
761	*	687	*
762	* action is a hint of what the caller believes need to be done.	688	* action is a hint of what the caller believes need to be done.
763	* For example, if the only thing that has changed is the face (due to
764	* an animation), we don't need to call update_position until that actually
765	* comes into view of a player. OTOH, many other things, like addition/removal
766	* of walls or living creatures may need us to update the flags now.
767	* current action are:	689	* current action are:
768	* UP_OBJ_INSERT: op was inserted	690	* UP_OBJ_INSERT: op was inserted
769	* UP_OBJ_REMOVE: op was removed	691	* UP_OBJ_REMOVE: op was removed
770	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update	692	* UP_OBJ_CHANGE: object has somehow changed. In this case, we always update
771	* as that is easier than trying to look at what may have changed.	693	* as that is easier than trying to look at what may have changed.
772	* UP_OBJ_FACE: only the objects face has changed.	694	* UP_OBJ_FACE: only the objects face has changed.
773	*/	695	*/
774		696	void
775	void update_object(object *op, int action) {	697	update_object (object *op, int action)
776	int update_now=0, flags;	698	{
777	MoveType move_on, move_off, move_block, move_slow;
778
779	if (op == NULL) {	699	if (op == NULL)
		700	{
780	/* this should never happen */	701	/* this should never happen */
781	LOG(llevDebug,"update_object() called for NULL object.\n");	702	LOG (llevDebug, "update_object() called for NULL object.\n");
782	return;	703	return;
783	}
784		704	}
785	if(op->env!=NULL) {	705
		706	if (op->env)
		707	{
786	/* Animation is currently handled by client, so nothing	708	/* Animation is currently handled by client, so nothing
787	* to do in this case.	709	* to do in this case.
788	*/	710	*/
789	return;	711	return;
790	}	712	}
791		713
792	/* If the map is saving, don't do anything as everything is	714	/* If the map is saving, don't do anything as everything is
793	* going to get freed anyways.	715	* going to get freed anyways.
794	*/	716	*/
795	if (!op->map || op->map->in_memory == MAP_SAVING) return;	717	if (!op->map || op->map->in_memory == MAP_SAVING)
796		718	return;
		719
797	/* make sure the object is within map boundaries */	720	/* make sure the object is within map boundaries */
798	if (op->x < 0 || op->x >= MAP_WIDTH(op->map) ||	721	if (op->x < 0 || op->x >= op->map->width || op->y < 0 || op->y >= op->map->height)
799	op->y < 0 || op->y >= MAP_HEIGHT(op->map)) {	722	{
800	LOG(llevError,"update_object() called for object out of map!\n");	723	LOG (llevError, "update_object() called for object out of map!\n");
801	#ifdef MANY_CORES	724	#ifdef MANY_CORES
802	abort();	725	abort ();
803	#endif	726	#endif
804	return;	727	return;
805	}
806		728	}
807	flags = GET_MAP_FLAGS(op->map, op->x, op->y);
808	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NEED_UPDATE);
809	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);
810	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);
811	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);
812	move_off = GET_MAP_MOVE_OFF(op->map, op->x, op->y);
813		729
		730	mapspace &m = op->ms ();
		731
		732	if (!(m.flags_ & P_UPTODATE))
		733	/* nop */;
814	if (action == UP_OBJ_INSERT) {	734	else if (action == UP_OBJ_INSERT)
		735	{
		736	// this is likely overkill, TODO: revisit (schmorp)
815	if (QUERY_FLAG(op, FLAG_BLOCKSVIEW) && !(flags & P_BLOCKSVIEW))	737	if ((QUERY_FLAG (op, FLAG_BLOCKSVIEW) && !(m.flags_ & P_BLOCKSVIEW))
816	update_now=1;
817
818	if (QUERY_FLAG(op, FLAG_NO_MAGIC) && !(flags & P_NO_MAGIC))	738	|| (QUERY_FLAG (op, FLAG_NO_MAGIC) && !(m.flags_ & P_NO_MAGIC))
819	update_now=1;	739	|| (op->type == PLAYER && !(m.flags_ & P_PLAYER))
820		740	|| (op->type == SAFE_GROUND && !(m.flags_ & P_SAFE))
		741	|| (QUERY_FLAG (op, FLAG_ALIVE) && !(m.flags_ & P_IS_ALIVE))
821	if (QUERY_FLAG(op, FLAG_DAMNED) && !(flags & P_NO_CLERIC))	742	|| (QUERY_FLAG (op, FLAG_DAMNED) && !(m.flags_ & P_NO_CLERIC))
822	update_now=1;	743	|| (m.move_on | op->move_on ) != m.move_on
823
824	if (QUERY_FLAG(op, FLAG_ALIVE) && !(flags & P_IS_ALIVE))
825	update_now=1;
826
827	if ((move_on | op->move_on) != move_on) update_now=1;
828	if ((move_off | op->move_off) != move_off) update_now=1;	744	|| (m.move_off | op->move_off ) != m.move_off
		745	|| (m.move_slow | op->move_slow) != m.move_slow
829	/* This isn't perfect, but I don't expect a lot of objects to	746	/* This isn't perfect, but I don't expect a lot of objects to
830	* to have move_allow right now.	747	* to have move_allow right now.
831	*/	748	*/
832	if (((move_block | op->move_block) & ~op->move_allow) != move_block)	749	|| ((m.move_block | op->move_block) & ~op->move_allow) != m.move_block
833	update_now=1;	750	|| 1) // the above is not strong enough a test to skip updating. los maybe? TODO (Schmorp)
834	if ((move_slow | op->move_slow) != move_slow) update_now=1;	751	m.flags_ = 0;
835	}	752	}
836	/* if the object is being removed, we can't make intelligent	753	/* if the object is being removed, we can't make intelligent
837	* decisions, because remove_ob can't really pass the object	754	* decisions, because remove_ob can't really pass the object
838	* that is being removed.	755	* that is being removed.
839	*/	756	*/
840	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE) {	757	else if (action == UP_OBJ_CHANGE || action == UP_OBJ_REMOVE)
841	update_now=1;	758	m.flags_ = 0;
842	} else if (action == UP_OBJ_FACE) {	759	else if (action == UP_OBJ_FACE)
843	/* Nothing to do for that case */	760	/* Nothing to do for that case */ ;
844	}
845	else {	761	else
846	LOG(llevError,"update_object called with invalid action: %d\n", action);	762	LOG (llevError, "update_object called with invalid action: %d\n", action);
847	}
848		763
849	if (update_now) {
850	SET_MAP_FLAGS(op->map, op->x, op->y, flags | P_NO_ERROR | P_NEED_UPDATE);
851	update_position(op->map, op->x, op->y);
852	}
853
854	if(op->more!=NULL)	764	if (op->more)
855	update_object(op->more, action);	765	update_object (op->more, action);
856	}	766	}
857		767
		768	object::object ()
		769	{
		770	SET_FLAG (this, FLAG_REMOVED);
858		771
859	/*	772	expmul = 1.0;
860	* free_object() frees everything allocated by an object, removes	773	face = blank_face;
861	* it from the list of used objects, and puts it on the list of	774	}
862	* free objects. The IS_FREED() flag is set in the object.	775
863	* The object must have been removed by remove_ob() first for	776	object::~object ()
864	* this function to succeed.	777	{
865	*	778	unlink ();
866	* If free_inventory is set, free inventory as well. Else drop items in	779
867	* inventory to the ground.	780	free_key_values (this);
868	*/	781	}
		782
		783	static int object_count;
		784
		785	void object::link ()
		786	{
		787	assert (!index);//D
		788	uuid = UUID::gen ();
		789	count = ++object_count;
		790
		791	refcnt_inc ();
		792	objects.insert (this);
		793	}
		794
		795	void object::unlink ()
		796	{
		797	if (!index)
		798	return;
		799
		800	objects.erase (this);
		801	refcnt_dec ();
		802	}
869		803
870	void	804	void
871	free_object (object * ob)	805	object::activate ()
872	{	806	{
873	free_object2 (ob, 0);	807	/* If already on active list, don't do anything */
		808	if (active)
		809	return;
		810
		811	if (has_active_speed ())
		812	actives.insert (this);
874	}	813	}
875		814
876	void	815	void
877	free_object2 (object * ob, int free_inventory)	816	object::activate_recursive ()
878	{	817	{
879	object *tmp, *op;	818	activate ();
880		819
881	if (!QUERY_FLAG (ob, FLAG_REMOVED))	820	for (object *op = inv; op; op = op->below)
882	{	821	op->activate_recursive ();
883	LOG (llevDebug, "Free object called with non removed object\n");	822	}
884	dump_object (ob);
885	#ifdef MANY_CORES
886	abort ();
887	#endif
888	}
889		823
890	if (QUERY_FLAG (ob, FLAG_FRIENDLY))	824	/* This function removes object 'op' from the list of active
891	{	825	* objects.
892	LOG (llevMonster, "Warning: tried to free friendly object.\n");	826	* This should only be used for style maps or other such
893	remove_friendly_object (ob);	827	* reference maps where you don't want an object that isn't
894	}	828	* in play chewing up cpu time getting processed.
895		829	* The reverse of this is to call update_ob_speed, which
896	if (QUERY_FLAG (ob, FLAG_FREED))	830	* will do the right thing based on the speed of the object.
897	{	831	*/
898	dump_object (ob);	832	void
899	LOG (llevError, "Trying to free freed object.\n%s\n", errmsg);	833	object::deactivate ()
		834	{
		835	/* If not on the active list, nothing needs to be done */
		836	if (!active)
900	return;	837	return;
		838
		839	actives.erase (this);
		840	}
		841
		842	void
		843	object::deactivate_recursive ()
		844	{
		845	for (object *op = inv; op; op = op->below)
		846	op->deactivate_recursive ();
		847
		848	deactivate ();
		849	}
		850
		851	void
		852	object::set_flag_inv (int flag, int value)
		853	{
		854	for (object *op = inv; op; op = op->below)
901	}	855	{
902		856	op->flag [flag] = value;
903	if (ob->more != NULL)	857	op->set_flag_inv (flag, value);
904	{	858	}
905	free_object2 (ob->more, free_inventory);	859	}
906	ob->more = NULL;
907	}
908		860
		861	/*
		862	* Remove and free all objects in the inventory of the given object.
		863	* object.c ?
		864	*/
		865	void
		866	object::destroy_inv (bool drop_to_ground)
		867	{
		868	// need to check first, because the checks below might segfault
		869	// as we might be on an invalid mapspace and crossfire code
		870	// is too buggy to ensure that the inventory is empty.
		871	// corollary: if you create arrows etc. with stuff in tis inventory,
		872	// cf will crash below with off-map x and y
909	if (ob->inv)	873	if (!inv)
910	{	874	return;
		875
911	/* Only if the space blocks everything do we not process -	876	/* Only if the space blocks everything do we not process -
912	* if some form of movement is allowed, let objects	877	* if some form of movement is allowed, let objects
913	* drop on that space.	878	* drop on that space.
914	*/	879	*/
915	if (free_inventory || ob->map == NULL	880	if (!drop_to_ground
916	|| ob->map->in_memory != MAP_IN_MEMORY	881	|| !map
917	|| (GET_MAP_MOVE_BLOCK (ob->map, ob->x, ob->y) == MOVE_ALL))	882	|| map->in_memory != MAP_ACTIVE
918	{	883	|| map->nodrop
919	op = ob->inv;	884	|| ms ().move_block == MOVE_ALL)
920
921	while (op != NULL)
922	{	885	{
923	tmp = op->below;	886	while (inv)
924	remove_ob (op);	887	{
925	free_object2 (op, free_inventory);	888	inv->destroy_inv (drop_to_ground);
926	op = tmp;	889	inv->destroy ();
927	}	890	}
928	}
929	else
930	{ /* Put objects in inventory onto this space */
931	op = ob->inv;
932
933	while (op != NULL)
934	{
935	tmp = op->below;
936	remove_ob (op);
937
938	if (QUERY_FLAG (op, FLAG_STARTEQUIP)
939	|| QUERY_FLAG (op, FLAG_NO_DROP) || op->type == RUNE
940	|| op->type == TRAP || QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
941	free_object (op);
942	else
943	{
944	op->x = ob->x;
945	op->y = ob->y;
946	insert_ob_in_map (op, ob->map, NULL, 0); /* Insert in same map as the envir */
947	}
948
949	op = tmp;
950	}
951	}
952	}
953
954	/* Remove object from the active list */
955	ob->speed = 0;
956	update_ob_speed (ob);
957
958	SET_FLAG (ob, FLAG_FREED);
959	ob->count = 0;
960
961	/* Remove this object from the list of used objects */
962	if (ob->prev == NULL)
963	{
964	objects = ob->next;
965
966	if (objects != NULL)
967	objects->prev = NULL;
968	}	891	}
969	else	892	else
		893	{ /* Put objects in inventory onto this space */
		894	while (inv)
		895	{
		896	object *op = inv;
		897
		898	if (op->flag [FLAG_STARTEQUIP]
		899	|| op->flag [FLAG_NO_DROP]
		900	|| op->type == RUNE
		901	|| op->type == TRAP
		902	|| op->flag [FLAG_IS_A_TEMPLATE]
		903	|| op->flag [FLAG_DESTROY_ON_DEATH])
		904	op->destroy ();
		905	else
		906	map->insert (op, x, y);
		907	}
		908	}
		909	}
		910
		911	object *object::create ()
		912	{
		913	object *op = new object;
		914	op->link ();
		915	return op;
		916	}
		917
		918	void
		919	object::do_destroy ()
		920	{
		921	attachable::do_destroy ();
		922
		923	if (flag [FLAG_IS_LINKED])
		924	remove_button_link (this);
		925
		926	if (flag [FLAG_FRIENDLY])
		927	remove_friendly_object (this);
		928
		929	if (!flag [FLAG_REMOVED])
		930	remove ();
		931
		932	destroy_inv (true);
		933
		934	deactivate ();
		935	unlink ();
		936
		937	flag [FLAG_FREED] = 1;
		938
		939	// hack to ensure that freed objects still have a valid map
		940	{
		941	static maptile *freed_map; // freed objects are moved here to avoid crashes
		942
		943	if (!freed_map)
970	{	944	{
971	ob->prev->next = ob->next;	945	freed_map = new maptile;
972		946
973	if (ob->next != NULL)	947	freed_map->path = "<freed objects map>";
974	ob->next->prev = ob->prev;	948	freed_map->name = "/internal/freed_objects_map";
		949	freed_map->width = 3;
		950	freed_map->height = 3;
		951	freed_map->nodrop = 1;
		952
		953	freed_map->alloc ();
		954	freed_map->in_memory = MAP_ACTIVE;
975	}	955	}
976		956
977	free_key_values (ob);	957	map = freed_map;
978		958	x = 1;
979	/* Now link it with the free_objects list: */	959	y = 1;
980	ob->prev = 0;
981	ob->next = 0;
982
983	delete ob;
984	}
985
986	/*
987	* sub_weight() recursively (outwards) subtracts a number from the
988	* weight of an object (and what is carried by it's environment(s)).
989	*/
990
991	void sub_weight (object *op, signed long weight) {
992	while (op != NULL) {
993	if (op->type == CONTAINER) {
994	weight=(signed long)(weight*(100-op->stats.Str)/100);
995	}
996	op->carrying-=weight;
997	op = op->env;
998	}	960	}
999	}
1000		961
1001	/* remove_ob(op):	962	if (more)
		963	{
		964	more->destroy ();
		965	more = 0;
		966	}
		967
		968	head = 0;
		969
		970	// clear those pointers that likely might cause circular references
		971	owner = 0;
		972	enemy = 0;
		973	attacked_by = 0;
		974	current_weapon = 0;
		975	}
		976
		977	void
		978	object::destroy (bool destroy_inventory)
		979	{
		980	if (destroyed ())
		981	return;
		982
		983	if (destroy_inventory)
		984	destroy_inv (false);
		985
		986	if (is_head ())
		987	if (sound_destroy)
		988	play_sound (sound_destroy);
		989	else if (flag [FLAG_MONSTER])
		990	play_sound (sound_find ("monster_destroy")); // quick hack, too lazy to create a generic mechanism
		991
		992	attachable::destroy ();
		993	}
		994
		995	/* op->remove ():
1002	* This function removes the object op from the linked list of objects	996	* This function removes the object op from the linked list of objects
1003	* which it is currently tied to. When this function is done, the	997	* which it is currently tied to. When this function is done, the
1004	* object will have no environment. If the object previously had an	998	* object will have no environment. If the object previously had an
1005	* environment, the x and y coordinates will be updated to	999	* environment, the x and y coordinates will be updated to
1006	* the previous environment.	1000	* the previous environment.
1007	* Beware: This function is called from the editor as well!
1008	*/	1001	*/
1009		1002	void
1010	void remove_ob(object *op) {	1003	object::do_remove ()
		1004	{
1011	object *tmp,*last=NULL;	1005	object *tmp, *last = 0;
1012	object *otmp;	1006	object *otmp;
1013	tag_t tag;
1014	int check_walk_off;
1015	mapstruct *m;
1016	sint16 x,y;
1017
1018		1007
1019	if(QUERY_FLAG(op,FLAG_REMOVED)) {	1008	if (QUERY_FLAG (this, FLAG_REMOVED))
1020	dump_object(op);	1009	return;
1021	LOG(llevError,"Trying to remove removed object.\n%s\n",errmsg);
1022		1010
1023	/* Changed it to always dump core in this case. As has been learned
1024	* in the past, trying to recover from errors almost always
1025	* make things worse, and this is a real error here - something
1026	* that should not happen.
1027	* Yes, if this was a mission critical app, trying to do something
1028	* to recover may make sense, but that is because failure of the app
1029	* may have other disastrous problems. Cf runs out of a script
1030	* so is easily enough restarted without any real problems.
1031	* MSW 2001-07-01
1032	*/
1033	abort();
1034	}
1035	if(op->more!=NULL)
1036	remove_ob(op->more);
1037
1038	SET_FLAG(op, FLAG_REMOVED);	1011	SET_FLAG (this, FLAG_REMOVED);
		1012	INVOKE_OBJECT (REMOVE, this);
1039		1013
		1014	if (more)
		1015	more->remove ();
		1016
1040	/*	1017	/*
1041	* In this case, the object to be removed is in someones	1018	* In this case, the object to be removed is in someones
1042	* inventory.	1019	* inventory.
		1020	*/
		1021	if (env)
		1022	{
		1023	adjust_weight (env, -total_weight ());
		1024
		1025	*(above ? &above->below : &env->inv) = below;
		1026
		1027	if (below)
		1028	below->above = above;
		1029
		1030	/* we set up values so that it could be inserted into
		1031	* the map, but we don't actually do that - it is up
		1032	* to the caller to decide what we want to do.
1043	*/	1033	*/
1044	if(op->env!=NULL) {	1034	map = env->map;
1045	if(op->nrof)	1035	x = env->x;
1046	sub_weight(op->env, op->weight*op->nrof);	1036	y = env->y;
1047	else	1037	above = 0;
1048	sub_weight(op->env, op->weight+op->carrying);	1038	below = 0;
		1039	env = 0;
1049		1040
1050	/* NO_FIX_PLAYER is set when a great many changes are being	1041	/* NO_FIX_PLAYER is set when a great many changes are being
1051	* made to players inventory. If set, avoiding the call	1042	* made to players inventory. If set, avoiding the call
1052	* to save cpu time.	1043	* to save cpu time.
		1044	*/
		1045	if ((otmp = in_player ()) && otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
		1046	otmp->update_stats ();
		1047	}
		1048	else if (map)
		1049	{
		1050	if (type == PLAYER)
		1051	{
		1052	// leaving a spot always closes any open container on the ground
		1053	if (container && !container->env)
		1054	// this causes spurious floorbox updates, but it ensures
		1055	// that the CLOSE event is being sent.
		1056	close_container ();
		1057
		1058	--map->players;
		1059	map->touch ();
		1060	}
		1061
		1062	map->dirty = true;
		1063	mapspace &ms = this->ms ();
		1064
		1065	/* link the object above us */
		1066	if (above)
		1067	above->below = below;
		1068	else
		1069	ms.top = below; /* we were top, set new top */
		1070
		1071	/* Relink the object below us, if there is one */
		1072	if (below)
		1073	below->above = above;
		1074	else
		1075	{
		1076	/* Nothing below, which means we need to relink map object for this space
		1077	* use translated coordinates in case some oddness with map tiling is
		1078	* evident
1053	*/	1079	*/
1054	if ((otmp=is_player_inv(op->env))!=NULL && otmp->contr &&	1080	if (GET_MAP_OB (map, x, y) != this)
1055	!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))	1081	LOG (llevError, "remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom? %s\n", debug_desc ());
1056	fix_player(otmp);
1057		1082
1058	if(op->above!=NULL)	1083	ms.bot = above; /* goes on above it. */
1059	op->above->below=op->below;
1060	else
1061	op->env->inv=op->below;
1062
1063	if(op->below!=NULL)
1064	op->below->above=op->above;
1065
1066	/* we set up values so that it could be inserted into
1067	* the map, but we don't actually do that - it is up
1068	* to the caller to decide what we want to do.
1069	*/	1084	}
1070	op->x=op->env->x,op->y=op->env->y;	1085
1071	op->map=op->env->map;	1086	above = 0;
1072	op->above=NULL,op->below=NULL;	1087	below = 0;
1073	op->env=NULL;	1088
		1089	if (map->in_memory == MAP_SAVING)
1074	return;	1090	return;
1075	}
1076		1091
1077	/* If we get here, we are removing it from a map */	1092	int check_walk_off = !flag [FLAG_NO_APPLY];
1078	if (op->map == NULL) return;
1079		1093
1080	x = op->x;	1094	if (object *pl = ms.player ())
1081	y = op->y;
1082	m = get_map_from_coord(op->map, &x, &y);
1083
1084	if (!m) {
1085	LOG(llevError,"remove_ob called when object was on map but appears to not be within valid coordinates? %s (%d,%d)\n",
1086	op->map->path, op->x, op->y);
1087	/* in old days, we used to set x and y to 0 and continue.
1088	* it seems if we get into this case, something is probablye
1089	* screwed up and should be fixed.
1090	*/
1091	abort();
1092	}
1093	if (op->map != m) {
1094	LOG(llevDebug,"remove_ob: Object not really on map it claimed to be on? %s != %s, %d,%d != %d,%d\n",
1095	op->map->path, m->path, op->x, op->y, x, y);
1096	}
1097
1098	/* Re did the following section of code - it looks like it had
1099	* lots of logic for things we no longer care about
1100	*/
1101
1102	/* link the object above us */
1103	if (op->above)
1104	op->above->below=op->below;
1105	else
1106	SET_MAP_TOP(m,x,y,op->below); /* we were top, set new top */
1107
1108	/* Relink the object below us, if there is one */
1109	if(op->below) {
1110	op->below->above=op->above;
1111	} else {
1112	/* Nothing below, which means we need to relink map object for this space
1113	* use translated coordinates in case some oddness with map tiling is
1114	* evident
1115	*/
1116	if(GET_MAP_OB(m,x,y)!=op) {
1117	dump_object(op);
1118	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);
1119	dump_object(GET_MAP_OB(m,x,y));
1120	LOG(llevError,"%s\n",errmsg);
1121	}	1095	{
1122	SET_MAP_OB(m,x,y,op->above); /* goes on above it. */	1096	if (pl->container == this)
1123	}
1124	op->above=NULL;
1125	op->below=NULL;
1126
1127	if (op->map->in_memory == MAP_SAVING)
1128	return;
1129
1130	tag = op->count;
1131	check_walk_off = ! QUERY_FLAG (op, FLAG_NO_APPLY);
1132	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above) {
1133	/* No point updating the players look faces if he is the object
1134	* being removed.
1135	*/
1136
1137	if(tmp->type==PLAYER && tmp!=op) {
1138	/* If a container that the player is currently using somehow gets	1097	/* If a container that the player is currently using somehow gets
1139	* removed (most likely destroyed), update the player view	1098	* removed (most likely destroyed), update the player view
1140	* appropriately.	1099	* appropriately.
1141	*/	1100	*/
1142	if (tmp->container==op) {	1101	pl->close_container ();
1143	CLEAR_FLAG(op, FLAG_APPLIED);	1102
1144	tmp->container=NULL;	1103	pl->contr->ns->floorbox_update ();
		1104	}
		1105
		1106	for (tmp = ms.bot; tmp; tmp = tmp->above)
		1107	{
		1108	/* No point updating the players look faces if he is the object
		1109	* being removed.
		1110	*/
		1111
		1112	/* See if object moving off should effect something */
		1113	if (check_walk_off
		1114	&& ((move_type & tmp->move_off)
		1115	&& (move_type & ~tmp->move_off & ~tmp->move_block) == 0))
		1116	{
		1117	move_apply (tmp, this, 0);
		1118
		1119	if (destroyed ())
		1120	LOG (llevError, "BUG: remove_ob(): name %s, destroyed leaving object\n", tmp->debug_desc ());
1145	}	1121	}
1146	tmp->contr->socket.update_look=1;
1147	}
1148	/* See if player moving off should effect something */
1149	if (check_walk_off && ((op->move_type & tmp->move_off) &&
1150	(op->move_type & ~tmp->move_off & ~tmp->move_block)==0)) {
1151		1122
1152	move_apply(tmp, op, NULL);
1153	if (was_destroyed (op, tag)) {
1154	LOG (llevError, "BUG: remove_ob(): name %s, archname %s destroyed "
1155	"leaving object\n", &tmp->name, &tmp->arch->name);
1156	}
1157	}
1158
1159	/* Eneq(@csd.uu.se): Fixed this to skip tmp->above=tmp */
1160
1161	if(tmp->above == tmp)
1162	tmp->above = NULL;
1163	last=tmp;	1123	last = tmp;
1164	}	1124	}
		1125
1165	/* last == NULL of there are no objects on this space */	1126	/* last == NULL if there are no objects on this space */
1166	if (last==NULL) {	1127	//TODO: this makes little sense, why only update the topmost object?
1167	/* set P_NEED_UPDATE, otherwise update_position will complain. In theory,	1128	if (!last)
1168	* we could preserve the flags (GET_MAP_FLAGS), but update_position figures	1129	map->at (x, y).flags_ = 0;
1169	* those out anyways, and if there are any flags set right now, they won't
1170	* be correct anyways.
1171	*/
1172	SET_MAP_FLAGS(op->map, op->x, op->y, P_NEED_UPDATE);
1173	update_position(op->map, op->x, op->y);
1174	}
1175	else	1130	else
1176	update_object(last, UP_OBJ_REMOVE);	1131	update_object (last, UP_OBJ_REMOVE);
1177		1132
1178	if(QUERY_FLAG(op,FLAG_BLOCKSVIEW)|| (op->glow_radius != 0))	1133	if (flag [FLAG_BLOCKSVIEW] || glow_radius)
1179	update_all_los(op->map, op->x, op->y);	1134	update_all_los (map, x, y);
1180		1135	}
1181	}	1136	}
1182		1137
1183	/*	1138	/*
1184	* merge_ob(op,top):	1139	* merge_ob(op,top):
1185	*	1140	*
1186	* This function goes through all objects below and including top, and	1141	* This function goes through all objects below and including top, and
1187	* merges op to the first matching object.	1142	* merges op to the first matching object.
1188	* If top is NULL, it is calculated.	1143	* If top is NULL, it is calculated.
1189	* Returns pointer to object if it succeded in the merge, otherwise NULL	1144	* Returns pointer to object if it succeded in the merge, otherwise NULL
1190	*/	1145	*/
1191		1146	object *
1192	object *merge_ob(object *op, object *top) {	1147	merge_ob (object *op, object *top)
		1148	{
1193	if(!op->nrof)	1149	if (!op->nrof)
1194	return 0;	1150	return 0;
1195	if(top==NULL)	1151
		1152	if (!top)
1196	for(top=op;top!=NULL&&top->above!=NULL;top=top->above);	1153	for (top = op; top && top->above; top = top->above)
		1154	;
		1155
1197	for(;top!=NULL;top=top->below) {	1156	for (; top; top = top->below)
		1157	{
1198	if(top==op)	1158	if (top == op)
1199	continue;	1159	continue;
1200	if (CAN_MERGE(op,top))	1160
1201	{	1161	if (object::can_merge (op, top))
		1162	{
1202	top->nrof+=op->nrof;	1163	top->nrof += op->nrof;
		1164
1203	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/	1165	/* CLEAR_FLAG(top,FLAG_STARTEQUIP);*/
1204	op->weight = 0; /* Don't want any adjustements now */	1166	op->weight = 0; /* Don't want any adjustements now */
1205	remove_ob(op);	1167	op->destroy ();
1206	free_object(op);
1207	return top;	1168	return top;
1208	}	1169	}
1209	}	1170	}
		1171
1210	return NULL;	1172	return 0;
1211	}	1173	}
1212		1174
		1175	void
		1176	object::expand_tail ()
		1177	{
		1178	if (more)
		1179	return;
		1180
		1181	object *prev = this;
		1182
		1183	for (archetype *at = (archetype *)arch->more; at; at = (archetype *)at->more)
		1184	{
		1185	object *op = arch_to_object (at);
		1186
		1187	op->name = name;
		1188	op->name_pl = name_pl;
		1189	op->title = title;
		1190
		1191	op->head = this;
		1192	prev->more = op;
		1193
		1194	prev = op;
		1195	}
		1196	}
		1197
1213	/*	1198	/*
1214	* same as insert_ob_in_map except it handle separate coordinates and do a clean	1199	* same as insert_ob_in_map except it handles separate coordinates and does a clean
1215	* job preparing multi-part monsters	1200	* job preparing multi-part monsters.
1216	*/	1201	*/
		1202	object *
1217	object *insert_ob_in_map_at(object *op, mapstruct *m, object *originator, int flag, int x, int y){	1203	insert_ob_in_map_at (object *op, maptile *m, object *originator, int flag, int x, int y)
1218	object* tmp;	1204	{
1219	if (op->head)	1205	for (object *tmp = op->head_ (); tmp; tmp = tmp->more)
1220	op=op->head;	1206	{
1221	for (tmp=op;tmp;tmp=tmp->more){
1222	tmp->x=x+tmp->arch->clone.x;	1207	tmp->x = x + tmp->arch->x;
1223	tmp->y=y+tmp->arch->clone.y;	1208	tmp->y = y + tmp->arch->y;
1224	}	1209	}
		1210
1225	return insert_ob_in_map (op, m, originator, flag);	1211	return insert_ob_in_map (op, m, originator, flag);
1226	}	1212	}
1227		1213
1228	/*	1214	/*
1229	* insert_ob_in_map (op, map, originator, flag):	1215	* insert_ob_in_map (op, map, originator, flag):
1230	* This function inserts the object in the two-way linked list	1216	* This function inserts the object in the two-way linked list
…		…
1243	* Return value:	1229	* Return value:
1244	* new object if 'op' was merged with other object	1230	* new object if 'op' was merged with other object
1245	* NULL if 'op' was destroyed	1231	* NULL if 'op' was destroyed
1246	* just 'op' otherwise	1232	* just 'op' otherwise
1247	*/	1233	*/
1248		1234	object *
1249	object *insert_ob_in_map (object *op, mapstruct *m, object *originator, int flag)	1235	insert_ob_in_map (object *op, maptile *m, object *originator, int flag)
1250	{	1236	{
		1237	assert (!op->flag [FLAG_FREED]);
		1238
1251	object *tmp, *top, *floor=NULL;	1239	object *top, *floor = NULL;
1252	sint16 x,y;
1253		1240
1254	if (QUERY_FLAG (op, FLAG_FREED)) {	1241	op->remove ();
1255	LOG (llevError, "Trying to insert freed object!\n");
1256	return NULL;
1257	}
1258	if(m==NULL) {
1259	dump_object(op);
1260	LOG(llevError,"Trying to insert in null-map!\n%s\n",errmsg);
1261	return op;
1262	}
1263	if(out_of_map(m,op->x,op->y)) {
1264	dump_object(op);
1265	LOG(llevError,"Trying to insert object outside the map.\n%s\n", errmsg);
1266	#ifdef MANY_CORES
1267	/* Better to catch this here, as otherwise the next use of this object
1268	* is likely to cause a crash. Better to find out where it is getting
1269	* improperly inserted.
1270	*/
1271	abort();
1272	#endif
1273	return op;
1274	}
1275	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1276	dump_object(op);
1277	LOG(llevError,"Trying to insert (map) inserted object.\n%s\n", errmsg);
1278	return op;
1279	}
1280	if(op->more!=NULL) {
1281	/* The part may be on a different map. */
1282		1242
1283	object *more = op->more;
1284
1285	/* We really need the caller to normalize coordinates - if
1286	* we set the map, that doesn't work if the location is within
1287	* a map and this is straddling an edge. So only if coordinate
1288	* is clear wrong do we normalize it.
1289	*/
1290	if (OUT_OF_REAL_MAP(more->map, more->x, more->y)) {
1291	more->map = get_map_from_coord(m, &more->x, &more->y);
1292	} else if (!more->map) {
1293	/* For backwards compatibility - when not dealing with tiled maps,
1294	* more->map should always point to the parent.
1295	*/
1296	more->map = m;
1297	}
1298
1299	if (insert_ob_in_map(more, more->map, originator, flag) == NULL) {
1300	if ( ! op->head)
1301	LOG (llevError, "BUG: insert_ob_in_map(): inserting op->more killed op\n");
1302	return NULL;
1303	}
1304	}
1305	CLEAR_FLAG(op,FLAG_REMOVED);
1306
1307	/* Ideally, the caller figures this out. However, it complicates a lot	1243	/* Ideally, the caller figures this out. However, it complicates a lot
1308	* of areas of callers (eg, anything that uses find_free_spot would now	1244	* of areas of callers (eg, anything that uses find_free_spot would now
1309	* need extra work	1245	* need extra work
1310	*/	1246	*/
1311	op->map=get_map_from_coord(m, &op->x, &op->y);	1247	if (!xy_normalise (m, op->x, op->y))
1312	x = op->x;	1248	{
1313	y = op->y;	1249	op->destroy ();
		1250	return 0;
		1251	}
1314		1252
		1253	if (object *more = op->more)
		1254	if (!insert_ob_in_map (more, m, originator, flag))
		1255	return 0;
		1256
		1257	CLEAR_FLAG (op, FLAG_REMOVED);
		1258
		1259	op->map = m;
		1260	mapspace &ms = op->ms ();
		1261
1315	/* this has to be done after we translate the coordinates.	1262	/* this has to be done after we translate the coordinates.
1316	*/	1263	*/
1317	if(op->nrof && !(flag & INS_NO_MERGE)) {	1264	if (op->nrof && !(flag & INS_NO_MERGE))
1318	for(tmp=GET_MAP_OB(op->map,x,y);tmp!=NULL;tmp=tmp->above)	1265	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
1319	if (CAN_MERGE(op,tmp)) {	1266	if (object::can_merge (op, tmp))
		1267	{
1320	op->nrof+=tmp->nrof;	1268	op->nrof += tmp->nrof;
1321	remove_ob(tmp);	1269	tmp->destroy (1);
1322	free_object(tmp);	1270	}
		1271
		1272	CLEAR_FLAG (op, FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */
		1273	CLEAR_FLAG (op, FLAG_INV_LOCKED);
		1274
		1275	if (!QUERY_FLAG (op, FLAG_ALIVE))
		1276	CLEAR_FLAG (op, FLAG_NO_STEAL);
		1277
		1278	if (flag & INS_BELOW_ORIGINATOR)
		1279	{
		1280	if (originator->map != op->map || originator->x != op->x || originator->y != op->y)
		1281	{
		1282	LOG (llevError, "insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
		1283	abort ();
		1284	}
		1285
		1286	op->above = originator;
		1287	op->below = originator->below;
		1288
		1289	if (op->below)
		1290	op->below->above = op;
		1291	else
		1292	ms.bot = op;
		1293
		1294	/* since *below* originator, no need to update top */
		1295	originator->below = op;
		1296	}
		1297	else
		1298	{
		1299	top = ms.bot;
		1300
		1301	/* If there are other objects, then */
		1302	if (top)
		1303	{
		1304	object *last = 0;
		1305
		1306	/*
		1307	* If there are multiple objects on this space, we do some trickier handling.
		1308	* We've already dealt with merging if appropriate.
		1309	* Generally, we want to put the new object on top. But if
		1310	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last
		1311	* floor, we want to insert above that and no further.
		1312	* Also, if there are spell objects on this space, we stop processing
		1313	* once we get to them. This reduces the need to traverse over all of
		1314	* them when adding another one - this saves quite a bit of cpu time
		1315	* when lots of spells are cast in one area. Currently, it is presumed
		1316	* that flying non pickable objects are spell objects.
		1317	*/
		1318	for (top = ms.bot; top; top = top->above)
		1319	{
		1320	if (QUERY_FLAG (top, FLAG_IS_FLOOR) || QUERY_FLAG (top, FLAG_OVERLAY_FLOOR))
		1321	floor = top;
		1322
		1323	if (QUERY_FLAG (top, FLAG_NO_PICK) && (top->move_type & (MOVE_FLY_LOW | MOVE_FLY_HIGH)) && !QUERY_FLAG (top, FLAG_IS_FLOOR))
		1324	{
		1325	/* We insert above top, so we want this object below this */
		1326	top = top->below;
		1327	break;
		1328	}
		1329
		1330	last = top;
1323	}	1331	}
1324	}
1325		1332
1326	CLEAR_FLAG(op,FLAG_APPLIED); /* hack for fixing F_APPLIED in items of dead people */	1333	/* Don't want top to be NULL, so set it to the last valid object */
1327	CLEAR_FLAG(op, FLAG_INV_LOCKED);	1334	top = last;
1328	if (!QUERY_FLAG(op, FLAG_ALIVE))
1329	CLEAR_FLAG(op, FLAG_NO_STEAL);
1330		1335
1331	if (flag & INS_BELOW_ORIGINATOR) {	1336	/* We let update_position deal with figuring out what the space
1332	if (originator->map != op->map || originator->x != op->x ||	1337	* looks like instead of lots of conditions here.
1333	originator->y != op->y) {	1338	* makes things faster, and effectively the same result.
1334	LOG(llevError,"insert_ob_in_map called with INS_BELOW_ORIGINATOR when originator not on same space!\n");
1335	abort();
1336	}
1337	op->above = originator;
1338	op->below = originator->below;
1339	if (op->below) op->below->above = op;
1340	else SET_MAP_OB(op->map, op->x, op->y, op);
1341	/* since *below* originator, no need to update top */
1342	originator->below = op;
1343	} else {
1344	/* If there are other objects, then */
1345	if((! (flag & INS_MAP_LOAD)) && ((top=GET_MAP_OB(op->map,op->x,op->y))!=NULL)) {
1346	object *last=NULL;
1347	/*	1339	*/
1348	* If there are multiple objects on this space, we do some trickier handling.	1340
1349	* We've already dealt with merging if appropriate.	1341	/* Have object 'fall below' other objects that block view.
1350	* Generally, we want to put the new object on top. But if	1342	* Unless those objects are exits.
1351	* flag contains INS_ABOVE_FLOOR_ONLY, once we find the last	1343	* If INS_ON_TOP is used, don't do this processing
1352	* floor, we want to insert above that and no further.	1344	* Need to find the object that in fact blocks view, otherwise
1353	* Also, if there are spell objects on this space, we stop processing	1345	* stacking is a bit odd.
1354	* once we get to them. This reduces the need to traverse over all of	1346	*/
1355	* them when adding another one - this saves quite a bit of cpu time	1347	if (!(flag & INS_ON_TOP)
1356	* when lots of spells are cast in one area. Currently, it is presumed	1348	&& ms.flags () & P_BLOCKSVIEW
1357	* that flying non pickable objects are spell objects.	1349	&& (op->face && !faces [op->face].visibility))
		1350	{
		1351	for (last = top; last != floor; last = last->below)
		1352	if (QUERY_FLAG (last, FLAG_BLOCKSVIEW) && (last->type != EXIT))
		1353	break;
		1354
		1355	/* Check to see if we found the object that blocks view,
		1356	* and make sure we have a below pointer for it so that
		1357	* we can get inserted below this one, which requires we
		1358	* set top to the object below us.
1358	*/	1359	*/
1359		1360	if (last && last->below && last != floor)
1360	while (top != NULL) {
1361	if (QUERY_FLAG(top, FLAG_IS_FLOOR) ||
1362	QUERY_FLAG(top, FLAG_OVERLAY_FLOOR)) floor = top;
1363	if (QUERY_FLAG(top, FLAG_NO_PICK)
1364	&& (top->move_type & (MOVE_FLY_LOW |MOVE_FLY_HIGH))
1365	&& !QUERY_FLAG(top, FLAG_IS_FLOOR))
1366	{
1367	/* We insert above top, so we want this object below this */
1368	top=top->below;
1369	break;
1370	}
1371	last = top;
1372	top = top->above;	1361	top = last->below;
1373	}	1362	}
1374	/* Don't want top to be NULL, so set it to the last valid object */
1375	top = last;
1376
1377	/* We let update_position deal with figuring out what the space
1378	* looks like instead of lots of conditions here.
1379	* makes things faster, and effectively the same result.
1380	*/
1381
1382	/* Have object 'fall below' other objects that block view.
1383	* Unless those objects are exits, type 66
1384	* If INS_ON_TOP is used, don't do this processing
1385	* Need to find the object that in fact blocks view, otherwise
1386	* stacking is a bit odd.
1387	*/
1388	if (!(flag & INS_ON_TOP) &&
1389	(get_map_flags(op->map, NULL, op->x, op->y, NULL, NULL) & P_BLOCKSVIEW) &&
1390	(op->face && !op->face->visibility)) {
1391	for (last=top; last != floor; last=last->below)
1392	if (QUERY_FLAG(last, FLAG_BLOCKSVIEW)&&(last->type != EXIT)) break;
1393	/* Check to see if we found the object that blocks view,
1394	* and make sure we have a below pointer for it so that
1395	* we can get inserted below this one, which requires we
1396	* set top to the object below us.
1397	*/
1398	if (last && last->below && last != floor) top=last->below;
1399	}
1400	} /* If objects on this space */	1363	} /* If objects on this space */
1401	if (flag & INS_MAP_LOAD)	1364
1402	top = GET_MAP_TOP(op->map,op->x,op->y);
1403	if (flag & INS_ABOVE_FLOOR_ONLY) top = floor;	1365	if (flag & INS_ABOVE_FLOOR_ONLY)
		1366	top = floor;
1404		1367
1405	/* Top is the object that our object (op) is going to get inserted above.	1368	/* Top is the object that our object (op) is going to get inserted above.
1406	*/	1369	*/
1407		1370
1408	/* First object on this space */	1371	/* First object on this space */
1409	if (!top) {	1372	if (!top)
1410	op->above = GET_MAP_OB(op->map, op->x, op->y);	1373	{
		1374	op->above = ms.bot;
		1375
		1376	if (op->above)
1411	if (op->above) op->above->below = op;	1377	op->above->below = op;
		1378
1412	op->below = NULL;	1379	op->below = 0;
1413	SET_MAP_OB(op->map, op->x, op->y, op);	1380	ms.bot = op;
		1381	}
		1382	else
1414	} else { /* get inserted into the stack above top */	1383	{ /* get inserted into the stack above top */
1415	op->above = top->above;	1384	op->above = top->above;
		1385
		1386	if (op->above)
1416	if (op->above) op->above->below = op;	1387	op->above->below = op;
		1388
1417	op->below = top;	1389	op->below = top;
1418	top->above = op;	1390	top->above = op;
1419	}	1391	}
		1392
1420	if (op->above==NULL)	1393	if (!op->above)
1421	SET_MAP_TOP(op->map,op->x, op->y, op);	1394	ms.top = op;
1422	} /* else not INS_BELOW_ORIGINATOR */	1395	} /* else not INS_BELOW_ORIGINATOR */
1423		1396
1424	if(op->type==PLAYER)	1397	if (op->type == PLAYER)
		1398	{
1425	op->contr->do_los=1;	1399	op->contr->do_los = 1;
		1400	++op->map->players;
		1401	op->map->touch ();
		1402	}
1426		1403
1427	/* If we have a floor, we know the player, if any, will be above	1404	op->map->dirty = true;
1428	* it, so save a few ticks and start from there.
1429	*/
1430	if (!(flag & INS_MAP_LOAD))
1431	for(tmp=floor?floor:GET_MAP_OB(op->map,op->x,op->y);tmp!=NULL;tmp=tmp->above) {
1432	if (tmp->type == PLAYER)
1433	tmp->contr->socket.update_look=1;
1434	}
1435		1405
		1406	if (object *pl = ms.player ())
		1407	pl->contr->ns->floorbox_update ();
		1408
1436	/* If this object glows, it may affect lighting conditions that are	1409	/* If this object glows, it may affect lighting conditions that are
1437	* visible to others on this map. But update_all_los is really	1410	* visible to others on this map. But update_all_los is really
1438	* an inefficient way to do this, as it means los for all players	1411	* an inefficient way to do this, as it means los for all players
1439	* on the map will get recalculated. The players could very well	1412	* on the map will get recalculated. The players could very well
1440	* be far away from this change and not affected in any way -	1413	* be far away from this change and not affected in any way -
1441	* this should get redone to only look for players within range,	1414	* this should get redone to only look for players within range,
1442	* or just updating the P_NEED_UPDATE for spaces within this area	1415	* or just updating the P_UPTODATE for spaces within this area
1443	* of effect may be sufficient.	1416	* of effect may be sufficient.
1444	*/	1417	*/
1445	if(MAP_DARKNESS(op->map) && (op->glow_radius != 0))	1418	if (op->map->darkness && (op->glow_radius != 0))
1446	update_all_los(op->map, op->x, op->y);	1419	update_all_los (op->map, op->x, op->y);
1447		1420
1448
1449	/* updates flags (blocked, alive, no magic, etc) for this map space */	1421	/* updates flags (blocked, alive, no magic, etc) for this map space */
1450	update_object(op,UP_OBJ_INSERT);	1422	update_object (op, UP_OBJ_INSERT);
1451		1423
		1424	INVOKE_OBJECT (INSERT, op);
1452		1425
1453	/* Don't know if moving this to the end will break anything. However,	1426	/* Don't know if moving this to the end will break anything. However,
1454	* we want to have update_look set above before calling this.	1427	* we want to have floorbox_update called before calling this.
1455	*	1428	*
1456	* check_move_on() must be after this because code called from	1429	* check_move_on() must be after this because code called from
1457	* check_move_on() depends on correct map flags (so functions like	1430	* check_move_on() depends on correct map flags (so functions like
1458	* blocked() and wall() work properly), and these flags are updated by	1431	* blocked() and wall() work properly), and these flags are updated by
1459	* update_object().	1432	* update_object().
1460	*/	1433	*/
1461		1434
1462	/* if this is not the head or flag has been passed, don't check walk on status */	1435	/* if this is not the head or flag has been passed, don't check walk on status */
1463
1464	if (!(flag & INS_NO_WALK_ON) && !op->head) {	1436	if (!(flag & INS_NO_WALK_ON) && op->head_ () == op)
		1437	{
1465	if (check_move_on(op, originator))	1438	if (check_move_on (op, originator))
1466	return NULL;	1439	return 0;
1467		1440
1468	/* If we are a multi part object, lets work our way through the check	1441	/* If we are a multi part object, lets work our way through the check
1469	* walk on's.	1442	* walk on's.
1470	*/	1443	*/
1471	for (tmp=op->more; tmp!=NULL; tmp=tmp->more)	1444	for (object *tmp = op->more; tmp; tmp = tmp->more)
1472	if (check_move_on (tmp, originator))	1445	if (check_move_on (tmp, originator))
1473	return NULL;	1446	return 0;
1474	}	1447	}
		1448
1475	return op;	1449	return op;
1476	}	1450	}
1477		1451
1478	/* this function inserts an object in the map, but if it	1452	/* this function inserts an object in the map, but if it
1479	* finds an object of its own type, it'll remove that one first.	1453	* finds an object of its own type, it'll remove that one first.
1480	* op is the object to insert it under: supplies x and the map.	1454	* op is the object to insert it under: supplies x and the map.
1481	*/	1455	*/
		1456	void
1482	void replace_insert_ob_in_map(const char *arch_string, object *op) {	1457	replace_insert_ob_in_map (const char *arch_string, object *op)
1483	object *tmp;	1458	{
1484	object *tmp1;
1485
1486	/* first search for itself and remove any old instances */	1459	/* first search for itself and remove any old instances */
1487		1460
1488	for(tmp=GET_MAP_OB(op->map,op->x,op->y); tmp!=NULL; tmp=tmp->above) {	1461	for (object *tmp = op->ms ().bot; tmp; tmp = tmp->above)
1489	if(!strcmp(tmp->arch->name,arch_string)) /* same archetype */ {	1462	if (!strcmp (tmp->arch->archname, arch_string)) /* same archetype */
1490	remove_ob(tmp);	1463	tmp->destroy (1);
1491	free_object(tmp);
1492	}
1493	}
1494		1464
1495	tmp1=arch_to_object(find_archetype(arch_string));	1465	object *tmp = arch_to_object (archetype::find (arch_string));
1496		1466
1497		1467	tmp->x = op->x;
1498	tmp1->x = op->x; tmp1->y = op->y;	1468	tmp->y = op->y;
		1469
1499	insert_ob_in_map(tmp1,op->map,op,0);	1470	insert_ob_in_map (tmp, op->map, op, 0);
1500	}	1471	}
		1472
		1473	object *
		1474	object::insert_at (object *where, object *originator, int flags)
		1475	{
		1476	if (where->env)
		1477	return where->env->insert (this);
		1478	else
		1479	return where->map->insert (this, where->x, where->y, originator, flags);
		1480	}
		1481
		1482	// find player who can see this object
		1483	static object *
		1484	visible_to (object *op)
		1485	{
		1486	if (!op->flag [FLAG_REMOVED])
		1487	{
		1488	// see if we are in a container of sorts
		1489	if (object *env = op->env)
		1490	{
		1491	// the player inventory itself is always visible
		1492	if (env->type == PLAYER)
		1493	return env;
		1494
		1495	// else a player could have our env open
		1496	env = env->outer_env ();
		1497
		1498	// the player itself is always on a map, so we will find him here
		1499	// even if our inv is in a player.
		1500	if (env->is_on_map ())
		1501	if (object *pl = env->ms ().player ())
		1502	if (pl->container == op->env)
		1503	return pl;
		1504	}
		1505	else
		1506	{
		1507	// maybe there is a player standing on the same mapspace
		1508	if (object *pl = env->ms ().player ())
		1509	return pl;
		1510	}
		1511	}
		1512
		1513	return 0;
		1514	}
		1515
		1516	/*
		1517	* decrease(object, number) decreases a specified number from
		1518	* the amount of an object. If the amount reaches 0, the object
		1519	* is subsequently removed and freed.
		1520	*
		1521	* Return value: 'op' if something is left, NULL if the amount reached 0
		1522	*/
		1523	bool
		1524	object::decrease (sint32 nr)
		1525	{
		1526	nr = min (nr, nrof);
		1527
		1528	if (!nr)
		1529	return 1;
		1530
		1531	nrof -= nr;
		1532
		1533	object *visible = visible_to (this);
		1534
		1535	if (nrof)
		1536	{
		1537	adjust_weight (env, -weight * nr); // carrying == 0
		1538
		1539	if (visible)
		1540	esrv_send_item (visible, this);
		1541
		1542	return 1;
		1543	}
		1544	else
		1545	{
		1546	if (visible)
		1547	esrv_del_item (visible->contr, count);
		1548
		1549	this->destroy (1);
		1550	return 0;
		1551	}
		1552	}
1501		1553
1502	/*	1554	/*
1503	* get_split_ob(ob,nr) splits up ob into two parts. The part which	1555	* get_split_ob(ob,nr) splits up ob into two parts. The part which
1504	* is returned contains nr objects, and the remaining parts contains	1556	* is returned contains nr objects, and the remaining parts contains
1505	* the rest (or is removed and freed if that number is 0).	1557	* the rest (or is removed and freed if that number is 0).
1506	* On failure, NULL is returned, and the reason put into the	1558	* On failure, NULL is returned, and the reason put into the
1507	* global static errmsg array.	1559	* global static errmsg array.
1508	*/	1560	*/
1509		1561	object *
1510	object *get_split_ob(object *orig_ob, uint32 nr) {	1562	object::split (sint32 nr)
1511	object *newob;	1563	{
1512	int is_removed = (QUERY_FLAG (orig_ob, FLAG_REMOVED) != 0);	1564	if (nrof < nr)
1513
1514	if(orig_ob->nrof<nr) {
1515	sprintf(errmsg,"There are only %d %ss.",
1516	orig_ob->nrof?orig_ob->nrof:1, &orig_ob->name);
1517	return NULL;
1518	}
1519	newob = object_create_clone(orig_ob);
1520	if((orig_ob->nrof-=nr)<1) {
1521	if ( ! is_removed)
1522	remove_ob(orig_ob);
1523	free_object2(orig_ob, 1);
1524	}
1525	else if ( ! is_removed) {
1526	if(orig_ob->env!=NULL)
1527	sub_weight (orig_ob->env,orig_ob->weight*nr);
1528	if (orig_ob->env == NULL && orig_ob->map->in_memory!=MAP_IN_MEMORY) {
1529	strcpy(errmsg, "Tried to split object whose map is not in memory.");
1530	LOG(llevDebug,
1531	"Error, Tried to split object whose map is not in memory.\n");
1532	return NULL;
1533	}
1534	}
1535	newob->nrof=nr;
1536
1537	return newob;	1565	return 0;
1538	}	1566	else if (nrof == nr)
		1567	{
		1568	remove ();
		1569	return this;
		1570	}
		1571	else
		1572	{
		1573	decrease (nr);
1539		1574
1540	/*	1575	object *op = object_create_clone (this);
1541	* decrease_ob_nr(object, number) decreases a specified number from	1576	op->nrof = nr;
1542	* the amount of an object. If the amount reaches 0, the object
1543	* is subsequently removed and freed.
1544	*
1545	* Return value: 'op' if something is left, NULL if the amount reached 0
1546	*/
1547
1548	object *decrease_ob_nr (object *op, uint32 i)
1549	{
1550	object *tmp;
1551	player *pl;
1552
1553	if (i == 0) /* objects with op->nrof require this check */
1554	return op;	1577	return op;
1555
1556	if (i > op->nrof)
1557	i = op->nrof;
1558
1559	if (QUERY_FLAG (op, FLAG_REMOVED))
1560	{	1578	}
1561	op->nrof -= i;	1579	}
		1580
		1581	//TODO: remove, but semantics differs from split_nr
		1582	object *
		1583	get_split_ob (object *orig_ob, uint32 nr)
		1584	{
		1585	if (orig_ob->nrof < nr)
1562	}	1586	{
1563	else if (op->env != NULL)	1587	sprintf (errmsg, "There are only %d %ss.", orig_ob->nrof ? orig_ob->nrof : 1, &orig_ob->name);
		1588	return 0;
1564	{	1589	}
1565	/* is this object in the players inventory, or sub container
1566	* therein?
1567	*/
1568	tmp = is_player_inv (op->env);
1569	/* nope. Is this a container the player has opened?
1570	* If so, set tmp to that player.
1571	* IMO, searching through all the players will mostly
1572	* likely be quicker than following op->env to the map,
1573	* and then searching the map for a player.
1574	*/
1575	if (!tmp) {
1576	for (pl=first_player; pl; pl=pl->next)
1577	if (pl->ob->container == op->env) break;
1578	if (pl) tmp=pl->ob;
1579	else tmp=NULL;
1580	}
1581		1590
1582	if (i < op->nrof) {	1591	return orig_ob->split (nr);
1583	sub_weight (op->env, op->weight * i);	1592	}
1584	op->nrof -= i;	1593
1585	if (tmp) {	1594	object *
1586	esrv_send_item(tmp, op);	1595	insert_ob_in_ob (object *op, object *where)
1587	}	1596	{
1588	} else {	1597	if (!where)
1589	remove_ob (op);
1590	op->nrof = 0;
1591	if (tmp) {
1592	esrv_del_item(tmp->contr, op->count);
1593	}
1594	}
1595	}	1598	{
1596	else	1599	char *dump = dump_object (op);
1597	{	1600	LOG (llevError, "Trying to put object in NULL.\n%s\n", dump);
1598	object *above = op->above;	1601	free (dump);
1599
1600	if (i < op->nrof) {
1601	op->nrof -= i;
1602	} else {
1603	remove_ob (op);
1604	op->nrof = 0;
1605	}
1606	/* Since we just removed op, op->above is null */
1607	for (tmp = above; tmp != NULL; tmp = tmp->above)
1608	if (tmp->type == PLAYER) {
1609	if (op->nrof)
1610	esrv_send_item(tmp, op);
1611	else
1612	esrv_del_item(tmp->contr, op->count);
1613	}
1614	}
1615
1616	if (op->nrof) {
1617	return op;	1602	return op;
1618	} else {	1603	}
1619	free_object (op);	1604
1620	return NULL;	1605	if (where->head_ () != where)
1621	}	1606	{
1622	}	1607	LOG (llevError | logBacktrace, "Warning: Tried to insert object into wrong part of multipart object.\n");
1623		1608	where = where->head;
1624	/*
1625	* add_weight(object, weight) adds the specified weight to an object,
1626	* and also updates how much the environment(s) is/are carrying.
1627	*/
1628
1629	void add_weight (object *op, signed long weight) {
1630	while (op!=NULL) {
1631	if (op->type == CONTAINER) {
1632	weight=(signed long)(weight*(100-op->stats.Str)/100);
1633	}
1634	op->carrying+=weight;
1635	op=op->env;
1636	}	1609	}
1637	}
1638		1610
		1611	return where->insert (op);
		1612	}
		1613
1639	/*	1614	/*
1640	* insert_ob_in_ob(op,environment):	1615	* env->insert (op)
1641	* This function inserts the object op in the linked list	1616	* This function inserts the object op in the linked list
1642	* inside the object environment.	1617	* inside the object environment.
1643	*	1618	*
1644	* Eneq(@csd.uu.se): Altered insert_ob_in_ob to make things picked up enter
1645	* the inventory at the last position or next to other objects of the same
1646	* type.
1647	* Frank: Now sorted by type, archetype and magic!
1648	*
1649	* The function returns now pointer to inserted item, and return value can	1619	* The function returns now pointer to inserted item, and return value can
1650	* be != op, if items are merged. -Tero	1620	* be != op, if items are merged. -Tero
1651	*/	1621	*/
1652		1622	object *
1653	object *insert_ob_in_ob(object *op,object *where) {	1623	object::insert (object *op)
1654	object *tmp, *otmp;	1624	{
1655
1656	if(!QUERY_FLAG(op,FLAG_REMOVED)) {
1657	dump_object(op);
1658	LOG(llevError,"Trying to insert (ob) inserted object.\n%s\n", errmsg);
1659	return op;
1660	}
1661	if(where==NULL) {
1662	dump_object(op);
1663	LOG(llevError,"Trying to put object in NULL.\n%s\n", errmsg);
1664	return op;
1665	}
1666	if (where->head) {
1667	LOG(llevDebug,
1668	"Warning: Tried to insert object wrong part of multipart object.\n");
1669	where = where->head;
1670	}
1671	if (op->more) {	1625	if (op->more)
		1626	{
1672	LOG(llevError, "Tried to insert multipart object %s (%d)\n",	1627	LOG (llevError, "Tried to insert multipart object %s (%d)\n", &op->name, op->count);
1673	&op->name, op->count);
1674	return op;	1628	return op;
1675	}	1629	}
1676	CLEAR_FLAG(op, FLAG_OBJ_ORIGINAL);	1630
1677	CLEAR_FLAG(op, FLAG_REMOVED);	1631	op->remove ();
		1632
		1633	op->flag [FLAG_OBJ_ORIGINAL] = 0;
		1634
1678	if(op->nrof) {	1635	if (op->nrof)
1679	for(tmp=where->inv;tmp!=NULL;tmp=tmp->below)	1636	for (object *tmp = inv; tmp; tmp = tmp->below)
1680	if ( CAN_MERGE(tmp,op) ) {	1637	if (object::can_merge (tmp, op))
		1638	{
1681	/* return the original object and remove inserted object	1639	/* return the original object and remove inserted object
1682	(client needs the original object) */	1640	(client needs the original object) */
1683	tmp->nrof += op->nrof;	1641	tmp->nrof += op->nrof;
1684	/* Weight handling gets pretty funky. Since we are adding to	1642	op->destroy (1);
1685	* tmp->nrof, we need to increase the weight.
1686	*/
1687	add_weight (where, op->weight*op->nrof);
1688	SET_FLAG(op, FLAG_REMOVED);
1689	free_object(op); /* free the inserted object */
1690	op = tmp;	1643	op = tmp;
1691	remove_ob (op); /* and fix old object's links */	1644	goto inserted;
1692	CLEAR_FLAG(op, FLAG_REMOVED);
1693	break;
1694	}	1645	}
1695		1646
1696	/* I assume combined objects have no inventory	1647	op->owner = 0; // it's his/hers now. period.
1697	* We add the weight - this object could have just been removed	1648	op->map = 0;
1698	* (if it was possible to merge). calling remove_ob will subtract	1649	op->x = 0;
1699	* the weight, so we need to add it in again, since we actually do	1650	op->y = 0;
1700	* the linking below
1701	*/
1702	add_weight (where, op->weight*op->nrof);
1703	} else
1704	add_weight (where, (op->weight+op->carrying));
1705		1651
1706	otmp=is_player_inv(where);
1707	if (otmp&&otmp->contr!=NULL) {
1708	if (!QUERY_FLAG(otmp,FLAG_NO_FIX_PLAYER))
1709	fix_player(otmp);
1710	}
1711
1712	op->map=NULL;
1713	op->env=where;
1714	op->above=NULL;	1652	op->above = 0;
1715	op->below=NULL;	1653	op->below = inv;
1716	op->x=0,op->y=0;	1654	op->env = this;
1717		1655
		1656	if (inv)
		1657	inv->above = op;
		1658
		1659	inv = op;
		1660
		1661	op->flag [FLAG_REMOVED] = 0;
		1662
		1663	adjust_weight (this, op->total_weight ());
		1664
		1665	inserted:
1718	/* reset the light list and los of the players on the map */	1666	/* reset the light list and los of the players on the map */
1719	if((op->glow_radius!=0)&&where->map)	1667	if (op->glow_radius && map && map->darkness)
1720	{	1668	update_all_los (map, x, y);
1721	#ifdef DEBUG_LIGHTS
1722	LOG(llevDebug, " insert_ob_in_ob(): got %s to insert in map/op\n",
1723	op->name);
1724	#endif /* DEBUG_LIGHTS */
1725	if (MAP_DARKNESS(where->map)) update_all_los(where->map, where->x, where->y);
1726	}
1727		1669
1728	/* Client has no idea of ordering so lets not bother ordering it here.	1670	if (object *otmp = in_player ())
1729	* It sure simplifies this function...	1671	if (otmp->contr && !QUERY_FLAG (otmp, FLAG_NO_FIX_PLAYER))
1730	*/	1672	otmp->update_stats ();
1731	if (where->inv==NULL)	1673
1732	where->inv=op;	1674	INVOKE_OBJECT (INSERT, this);
1733	else {	1675
1734	op->below = where->inv;
1735	op->below->above = op;
1736	where->inv = op;
1737	}
1738	return op;	1676	return op;
1739	}	1677	}
1740		1678
1741	/*	1679	/*
1742	* Checks if any objects has a move_type that matches objects	1680	* Checks if any objects has a move_type that matches objects
…		…
1756	*	1694	*
1757	* MSW 2001-07-08: Check all objects on space, not just those below	1695	* MSW 2001-07-08: Check all objects on space, not just those below
1758	* object being inserted. insert_ob_in_map may not put new objects	1696	* object being inserted. insert_ob_in_map may not put new objects
1759	* on top.	1697	* on top.
1760	*/	1698	*/
1761		1699	int
1762	int check_move_on (object *op, object *originator)	1700	check_move_on (object *op, object *originator)
1763	{	1701	{
1764	object *tmp;	1702	object *tmp;
1765	tag_t tag;
1766	mapstruct *m=op->map;	1703	maptile *m = op->map;
1767	int x=op->x, y=op->y;	1704	int x = op->x, y = op->y;
		1705
1768	MoveType move_on, move_slow, move_block;	1706	MoveType move_on, move_slow, move_block;
1769		1707
1770	if(QUERY_FLAG(op,FLAG_NO_APPLY))	1708	if (QUERY_FLAG (op, FLAG_NO_APPLY))
1771	return 0;	1709	return 0;
1772		1710
1773	tag = op->count;
1774
1775	move_on = GET_MAP_MOVE_ON(op->map, op->x, op->y);	1711	move_on = GET_MAP_MOVE_ON (op->map, op->x, op->y);
1776	move_slow = GET_MAP_MOVE_SLOW(op->map, op->x, op->y);	1712	move_slow = GET_MAP_MOVE_SLOW (op->map, op->x, op->y);
1777	move_block = GET_MAP_MOVE_BLOCK(op->map, op->x, op->y);	1713	move_block = GET_MAP_MOVE_BLOCK (op->map, op->x, op->y);
1778		1714
1779	/* if nothing on this space will slow op down or be applied,	1715	/* if nothing on this space will slow op down or be applied,
1780	* no need to do checking below. have to make sure move_type	1716	* no need to do checking below. have to make sure move_type
1781	* is set, as lots of objects don't have it set - we treat that	1717	* is set, as lots of objects don't have it set - we treat that
1782	* as walking.	1718	* as walking.
1783	*/	1719	*/
1784	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))	1720	if (op->move_type && !(op->move_type & move_on) && !(op->move_type & move_slow))
1785	return 0;	1721	return 0;
1786		1722
1787	/* This is basically inverse logic of that below - basically,	1723	/* This is basically inverse logic of that below - basically,
1788	* if the object can avoid the move on or slow move, they do so,	1724	* if the object can avoid the move on or slow move, they do so,
1789	* but can't do it if the alternate movement they are using is	1725	* but can't do it if the alternate movement they are using is
1790	* blocked. Logic on this seems confusing, but does seem correct.	1726	* blocked. Logic on this seems confusing, but does seem correct.
1791	*/	1727	*/
1792	if ((op->move_type & ~move_on & ~move_block) != 0 &&	1728	if ((op->move_type & ~move_on & ~move_block) != 0 && (op->move_type & ~move_slow & ~move_block) != 0)
1793	(op->move_type & ~move_slow & ~move_block) != 0) return 0;	1729	return 0;
1794		1730
1795	/* The objects have to be checked from top to bottom.	1731	/* The objects have to be checked from top to bottom.
1796	* Hence, we first go to the top:	1732	* Hence, we first go to the top:
1797	*/	1733	*/
1798		1734
1799	for (tmp=GET_MAP_OB(op->map, op->x, op->y); tmp!=NULL &&	1735	for (tmp = op->ms ().bot; tmp && tmp->above; tmp = tmp->above)
1800	tmp->above!=NULL; tmp=tmp->above) {	1736	{
1801	/* Trim the search when we find the first other spell effect	1737	/* Trim the search when we find the first other spell effect
1802	* this helps performance so that if a space has 50 spell objects,	1738	* this helps performance so that if a space has 50 spell objects,
1803	* we don't need to check all of them.	1739	* we don't need to check all of them.
1804	*/	1740	*/
1805	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG(tmp, FLAG_NO_PICK)) break;	1741	if ((tmp->move_type & MOVE_FLY_LOW) && QUERY_FLAG (tmp, FLAG_NO_PICK))
		1742	break;
		1743	}
		1744
		1745	for (; tmp; tmp = tmp->below)
1806	}	1746	{
1807	for(;tmp!=NULL; tmp=tmp->below) {	1747	if (tmp == op)
1808	if (tmp == op) continue; /* Can't apply yourself */	1748	continue; /* Can't apply yourself */
1809		1749
1810	/* Check to see if one of the movement types should be slowed down.	1750	/* Check to see if one of the movement types should be slowed down.
1811	* Second check makes sure that the movement types not being slowed	1751	* Second check makes sure that the movement types not being slowed
1812	* (~slow_move) is not blocked on this space - just because the	1752	* (~slow_move) is not blocked on this space - just because the
1813	* space doesn't slow down swimming (for example), if you can't actually	1753	* space doesn't slow down swimming (for example), if you can't actually
1814	* swim on that space, can't use it to avoid the penalty.	1754	* swim on that space, can't use it to avoid the penalty.
1815	*/	1755	*/
1816	if (!QUERY_FLAG(op, FLAG_WIZPASS)) {	1756	if (!QUERY_FLAG (op, FLAG_WIZPASS))
		1757	{
1817	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||	1758	if ((!op->move_type && tmp->move_slow & MOVE_WALK) ||
1818	((op->move_type & tmp->move_slow) &&
1819	(op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0)) {	1759	((op->move_type & tmp->move_slow) && (op->move_type & ~tmp->move_slow & ~tmp->move_block) == 0))
		1760	{
1820		1761
1821	float diff;	1762	float
1822
1823	diff = tmp->move_slow_penalty*FABS(op->speed);	1763	diff = tmp->move_slow_penalty * fabs (op->speed);
		1764
1824	if (op->type == PLAYER) {	1765	if (op->type == PLAYER)
1825	if ((QUERY_FLAG(tmp, FLAG_IS_HILLY) && find_skill_by_number(op, SK_CLIMBING)) ||	1766	if ((QUERY_FLAG (tmp, FLAG_IS_HILLY) && find_skill_by_number (op, SK_CLIMBING)) ||
1826	(QUERY_FLAG(tmp, FLAG_IS_WOODED) && find_skill_by_number(op, SK_WOODSMAN))) {	1767	(QUERY_FLAG (tmp, FLAG_IS_WOODED) && find_skill_by_number (op, SK_WOODSMAN)))
1827	diff /= 4.0;	1768	diff /= 4.0;
1828	}	1769
1829	}
1830	op->speed_left -= diff;	1770	op->speed_left -= diff;
1831	}	1771	}
1832	}	1772	}
1833		1773
1834	/* Basically same logic as above, except now for actual apply. */	1774	/* Basically same logic as above, except now for actual apply. */
1835	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||	1775	if ((!op->move_type && tmp->move_on & MOVE_WALK) ||
1836	((op->move_type & tmp->move_on) &&
1837	(op->move_type & ~tmp->move_on & ~tmp->move_block)==0)) {	1776	((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0))
1838		1777	{
1839	move_apply(tmp, op, originator);	1778	move_apply (tmp, op, originator);
		1779
1840	if (was_destroyed (op, tag))	1780	if (op->destroyed ())
1841	return 1;	1781	return 1;
1842		1782
1843	/* what the person/creature stepped onto has moved the object	1783	/* what the person/creature stepped onto has moved the object
1844	* someplace new. Don't process any further - if we did,	1784	* someplace new. Don't process any further - if we did,
1845	* have a feeling strange problems would result.	1785	* have a feeling strange problems would result.
1846	*/	1786	*/
1847	if (op->map != m || op->x != x || op->y != y) return 0;	1787	if (op->map != m || op->x != x || op->y != y)
		1788	return 0;
1848	}	1789	}
1849	}	1790	}
		1791
1850	return 0;	1792	return 0;
1851	}	1793	}
1852		1794
1853	/*	1795	/*
1854	* present_arch(arch, map, x, y) searches for any objects with	1796	* present_arch(arch, map, x, y) searches for any objects with
1855	* a matching archetype at the given map and coordinates.	1797	* a matching archetype at the given map and coordinates.
1856	* The first matching object is returned, or NULL if none.	1798	* The first matching object is returned, or NULL if none.
1857	*/	1799	*/
1858		1800	object *
1859	object *present_arch(const archetype *at, mapstruct *m, int x, int y) {	1801	present_arch (const archetype *at, maptile *m, int x, int y)
1860	object *tmp;	1802	{
1861	if(m==NULL || out_of_map(m,x,y)) {	1803	if (!m || out_of_map (m, x, y))
		1804	{
1862	LOG(llevError,"Present_arch called outside map.\n");	1805	LOG (llevError, "Present_arch called outside map.\n");
1863	return NULL;	1806	return NULL;
1864	}	1807	}
1865	for(tmp=GET_MAP_OB(m,x,y); tmp != NULL; tmp = tmp->above)	1808
		1809	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1866	if(tmp->arch == at)	1810	if (tmp->arch == at)
1867	return tmp;	1811	return tmp;
		1812
1868	return NULL;	1813	return NULL;
1869	}	1814	}
1870		1815
1871	/*	1816	/*
1872	* present(type, map, x, y) searches for any objects with	1817	* present(type, map, x, y) searches for any objects with
1873	* a matching type variable at the given map and coordinates.	1818	* a matching type variable at the given map and coordinates.
1874	* The first matching object is returned, or NULL if none.	1819	* The first matching object is returned, or NULL if none.
1875	*/	1820	*/
1876		1821	object *
1877	object *present(unsigned char type,mapstruct *m, int x,int y) {	1822	present (unsigned char type, maptile *m, int x, int y)
1878	object *tmp;	1823	{
1879	if(out_of_map(m,x,y)) {	1824	if (out_of_map (m, x, y))
		1825	{
1880	LOG(llevError,"Present called outside map.\n");	1826	LOG (llevError, "Present called outside map.\n");
1881	return NULL;	1827	return NULL;
1882	}	1828	}
1883	for(tmp=GET_MAP_OB(m,x,y);tmp!=NULL;tmp=tmp->above)	1829
		1830	for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1884	if(tmp->type==type)	1831	if (tmp->type == type)
1885	return tmp;	1832	return tmp;
		1833
1886	return NULL;	1834	return NULL;
1887	}	1835	}
1888		1836
1889	/*	1837	/*
1890	* present_in_ob(type, object) searches for any objects with	1838	* present_in_ob(type, object) searches for any objects with
1891	* a matching type variable in the inventory of the given object.	1839	* a matching type variable in the inventory of the given object.
1892	* The first matching object is returned, or NULL if none.	1840	* The first matching object is returned, or NULL if none.
1893	*/	1841	*/
1894		1842	object *
1895	object *present_in_ob(unsigned char type, const object *op) {	1843	present_in_ob (unsigned char type, const object *op)
1896	object *tmp;	1844	{
1897	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1845	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1898	if(tmp->type==type)	1846	if (tmp->type == type)
1899	return tmp;	1847	return tmp;
		1848
1900	return NULL;	1849	return NULL;
1901	}	1850	}
1902		1851
1903	/*	1852	/*
1904	* present_in_ob (type, str, object) searches for any objects with	1853	* present_in_ob (type, str, object) searches for any objects with
…		…
1912	* str is the string to match against. Note that we match against	1861	* str is the string to match against. Note that we match against
1913	* the object name, not the archetype name. this is so that the	1862	* the object name, not the archetype name. this is so that the
1914	* spell code can use one object type (force), but change it's name	1863	* spell code can use one object type (force), but change it's name
1915	* to be unique.	1864	* to be unique.
1916	*/	1865	*/
1917		1866	object *
1918	object *present_in_ob_by_name(int type, const char *str, const object *op) {	1867	present_in_ob_by_name (int type, const char *str, const object *op)
1919	object *tmp;	1868	{
1920
1921	for(tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	1869	for (object *tmp = op->inv; tmp; tmp = tmp->below)
1922	if ((type==-1 || tmp->type==type) && (!strcmp(str, tmp->name)))	1870	if ((type == -1 || tmp->type == type) && (!strcmp (str, tmp->name)))
1923	return tmp;	1871	return tmp;
1924	}	1872
1925	return NULL;	1873	return 0;
1926	}	1874	}
1927		1875
1928	/*	1876	/*
1929	* present_arch_in_ob(archetype, object) searches for any objects with	1877	* present_arch_in_ob(archetype, object) searches for any objects with
1930	* a matching archetype in the inventory of the given object.	1878	* a matching archetype in the inventory of the given object.
1931	* The first matching object is returned, or NULL if none.	1879	* The first matching object is returned, or NULL if none.
1932	*/	1880	*/
1933		1881	object *
1934	object *present_arch_in_ob(const archetype *at, const object *op) {	1882	present_arch_in_ob (const archetype *at, const object *op)
1935	object *tmp;	1883	{
1936	for(tmp=op->inv;tmp!=NULL;tmp=tmp->below)	1884	for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below)
1937	if( tmp->arch == at)	1885	if (tmp->arch == at)
1938	return tmp;	1886	return tmp;
		1887
1939	return NULL;	1888	return NULL;
1940	}	1889	}
1941		1890
1942	/*	1891	/*
1943	* activate recursively a flag on an object inventory	1892	* activate recursively a flag on an object inventory
1944	*/	1893	*/
		1894	void
1945	void flag_inv(object*op, int flag){	1895	flag_inv (object *op, int flag)
1946	object *tmp;	1896	{
1947	if(op->inv)
1948	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1897	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1898	{
1949	SET_FLAG(tmp, flag);	1899	SET_FLAG (tmp, flag);
1950	flag_inv(tmp,flag);	1900	flag_inv (tmp, flag);
1951	}	1901	}
		1902	}
		1903
1952	}/*	1904	/*
1953	* desactivate recursively a flag on an object inventory	1905	* deactivate recursively a flag on an object inventory
1954	*/	1906	*/
		1907	void
1955	void unflag_inv(object*op, int flag){	1908	unflag_inv (object *op, int flag)
1956	object *tmp;	1909	{
1957	if(op->inv)
1958	for(tmp = op->inv; tmp != NULL; tmp = tmp->below){	1910	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		1911	{
1959	CLEAR_FLAG(tmp, flag);	1912	CLEAR_FLAG (tmp, flag);
1960	unflag_inv(tmp,flag);	1913	unflag_inv (tmp, flag);
1961	}	1914	}
1962	}
1963
1964	/*
1965	* set_cheat(object) sets the cheat flag (WAS_WIZ) in the object and in
1966	* all it's inventory (recursively).
1967	* If checksums are used, a player will get set_cheat called for
1968	* him/her-self and all object carried by a call to this function.
1969	*/
1970
1971	void set_cheat(object *op) {
1972	SET_FLAG(op, FLAG_WAS_WIZ);
1973	flag_inv(op, FLAG_WAS_WIZ);
1974	}	1915	}
1975		1916
1976	/*	1917	/*
1977	* find_free_spot(object, map, x, y, start, stop) will search for	1918	* find_free_spot(object, map, x, y, start, stop) will search for
1978	* a spot at the given map and coordinates which will be able to contain	1919	* a spot at the given map and coordinates which will be able to contain
…		…
1980	* to search (see the freearr_x/y[] definition).	1921	* to search (see the freearr_x/y[] definition).
1981	* It returns a random choice among the alternatives found.	1922	* It returns a random choice among the alternatives found.
1982	* start and stop are where to start relative to the free_arr array (1,9	1923	* start and stop are where to start relative to the free_arr array (1,9
1983	* does all 4 immediate directions). This returns the index into the	1924	* does all 4 immediate directions). This returns the index into the
1984	* array of the free spot, -1 if no spot available (dir 0 = x,y)	1925	* array of the free spot, -1 if no spot available (dir 0 = x,y)
1985	* Note - this only checks to see if there is space for the head of the
1986	* object - if it is a multispace object, this should be called for all
1987	* pieces.
1988	* Note2: This function does correctly handle tiled maps, but does not	1926	* Note: This function does correctly handle tiled maps, but does not
1989	* inform the caller. However, insert_ob_in_map will update as	1927	* inform the caller. However, insert_ob_in_map will update as
1990	* necessary, so the caller shouldn't need to do any special work.	1928	* necessary, so the caller shouldn't need to do any special work.
1991	* Note - updated to take an object instead of archetype - this is necessary	1929	* Note - updated to take an object instead of archetype - this is necessary
1992	* because arch_blocked (now ob_blocked) needs to know the movement type	1930	* because arch_blocked (now ob_blocked) needs to know the movement type
1993	* to know if the space in question will block the object. We can't use	1931	* to know if the space in question will block the object. We can't use
1994	* the archetype because that isn't correct if the monster has been	1932	* the archetype because that isn't correct if the monster has been
1995	* customized, changed states, etc.	1933	* customized, changed states, etc.
1996	*/	1934	*/
1997		1935	int
1998	int find_free_spot(const object *ob, mapstruct *m,int x,int y,int start,int stop) {	1936	find_free_spot (const object *ob, maptile *m, int x, int y, int start, int stop)
		1937	{
		1938	int altern[SIZEOFFREE];
1999	int i,index=0, flag;	1939	int index = 0, flag;
2000	static int altern[SIZEOFFREE];
2001		1940
2002	for(i=start;i<stop;i++) {	1941	for (int i = start; i < stop; i++)
2003	flag = ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]);	1942	{
2004	if(!flag)	1943	mapxy pos (m, x, y); pos.move (i);
		1944
		1945	if (!pos.normalise ())
		1946	continue;
		1947
		1948	mapspace &ms = *pos;
		1949
		1950	if (ms.flags () & P_IS_ALIVE)
		1951	continue;
		1952
		1953	/* However, often
		1954	* ob doesn't have any move type (when used to place exits)
		1955	* so the AND operation in OB_TYPE_MOVE_BLOCK doesn't work.
		1956	*/
		1957	if (ob && ob->move_type == 0 && ms.move_block != MOVE_ALL)
		1958	{
2005	altern[index++]=i;	1959	altern [index++] = i;
		1960	continue;
		1961	}
2006		1962
2007	/* Basically, if we find a wall on a space, we cut down the search size.	1963	/* Basically, if we find a wall on a space, we cut down the search size.
2008	* In this way, we won't return spaces that are on another side of a wall.	1964	* In this way, we won't return spaces that are on another side of a wall.
2009	* This mostly work, but it cuts down the search size in all directions -	1965	* This mostly work, but it cuts down the search size in all directions -
2010	* if the space being examined only has a wall to the north and empty	1966	* if the space being examined only has a wall to the north and empty
2011	* spaces in all the other directions, this will reduce the search space	1967	* spaces in all the other directions, this will reduce the search space
2012	* to only the spaces immediately surrounding the target area, and	1968	* to only the spaces immediately surrounding the target area, and
2013	* won't look 2 spaces south of the target space.	1969	* won't look 2 spaces south of the target space.
2014	*/	1970	*/
2015	else if ((flag & AB_NO_PASS) && maxfree[i]<stop)	1971	if (ms.move_block == MOVE_ALL && maxfree[i] < stop)
		1972	{
2016	stop=maxfree[i];	1973	stop = maxfree[i];
2017	}	1974	continue;
2018	if(!index) return -1;	1975	}
2019	return altern[RANDOM()%index];
2020	}
2021		1976
		1977	/* Note it is intentional that we check ob - the movement type of the
		1978	* head of the object should correspond for the entire object.
		1979	*/
		1980	if (OB_TYPE_MOVE_BLOCK (ob, ms.move_block))
		1981	continue;
		1982
		1983	if (ob->blocked (m, pos.x, pos.y))
		1984	continue;
		1985
		1986	altern [index++] = i;
		1987	}
		1988
		1989	if (!index)
		1990	return -1;
		1991
		1992	return altern [rndm (index)];
		1993	}
		1994
2022	/*	1995	/*
2023	* find_first_free_spot(archetype, mapstruct, x, y) works like	1996	* find_first_free_spot(archetype, maptile, x, y) works like
2024	* find_free_spot(), but it will search max number of squares.	1997	* find_free_spot(), but it will search max number of squares.
2025	* But it will return the first available spot, not a random choice.	1998	* But it will return the first available spot, not a random choice.
2026	* Changed 0.93.2: Have it return -1 if there is no free spot available.	1999	* Changed 0.93.2: Have it return -1 if there is no free spot available.
2027	*/	2000	*/
2028		2001	int
2029	int find_first_free_spot(const object *ob, mapstruct *m,int x,int y) {	2002	find_first_free_spot (const object *ob, maptile *m, int x, int y)
2030	int i;	2003	{
2031	for(i=0;i<SIZEOFFREE;i++) {	2004	for (int i = 0; i < SIZEOFFREE; i++)
2032	if(!ob_blocked(ob,m,x+freearr_x[i],y+freearr_y[i]))	2005	if (!ob->blocked (m, x + freearr_x[i], y + freearr_y[i]))
2033	return i;	2006	return i;
2034	}	2007
2035	return -1;	2008	return -1;
2036	}	2009	}
2037		2010
2038	/*	2011	/*
2039	* The function permute(arr, begin, end) randomly reorders the array	2012	* The function permute(arr, begin, end) randomly reorders the array
2040	* arr[begin..end-1].	2013	* arr[begin..end-1].
		2014	* now uses a fisher-yates shuffle, old permute was broken
2041	*/	2015	*/
		2016	static void
2042	static void permute(int *arr, int begin, int end)	2017	permute (int *arr, int begin, int end)
2043	{	2018	{
2044	int i, j, tmp, len;	2019	arr += begin;
		2020	end -= begin;
2045		2021
2046	len = end-begin;	2022	while (--end)
2047	for(i = begin; i < end; i++)	2023	swap (arr [end], arr [rndm (end + 1)]);
2048	{
2049	j = begin+RANDOM()%len;
2050
2051	tmp = arr[i];
2052	arr[i] = arr[j];
2053	arr[j] = tmp;
2054	}
2055	}	2024	}
2056		2025
2057	/* new function to make monster searching more efficient, and effective!	2026	/* new function to make monster searching more efficient, and effective!
2058	* This basically returns a randomized array (in the passed pointer) of	2027	* This basically returns a randomized array (in the passed pointer) of
2059	* the spaces to find monsters. In this way, it won't always look for	2028	* the spaces to find monsters. In this way, it won't always look for
2060	* monsters to the north first. However, the size of the array passed	2029	* monsters to the north first. However, the size of the array passed
2061	* covers all the spaces, so within that size, all the spaces within	2030	* covers all the spaces, so within that size, all the spaces within
2062	* the 3x3 area will be searched, just not in a predictable order.	2031	* the 3x3 area will be searched, just not in a predictable order.
2063	*/	2032	*/
		2033	void
2064	void get_search_arr(int *search_arr)	2034	get_search_arr (int *search_arr)
2065	{	2035	{
2066	int i;	2036	int i;
2067		2037
2068	for(i = 0; i < SIZEOFFREE; i++)	2038	for (i = 0; i < SIZEOFFREE; i++)
2069	{
2070	search_arr[i] = i;	2039	search_arr[i] = i;
2071	}
2072		2040
2073	permute(search_arr, 1, SIZEOFFREE1+1);	2041	permute (search_arr, 1, SIZEOFFREE1 + 1);
2074	permute(search_arr, SIZEOFFREE1+1, SIZEOFFREE2+1);	2042	permute (search_arr, SIZEOFFREE1 + 1, SIZEOFFREE2 + 1);
2075	permute(search_arr, SIZEOFFREE2+1, SIZEOFFREE);	2043	permute (search_arr, SIZEOFFREE2 + 1, SIZEOFFREE);
2076	}	2044	}
2077		2045
2078	/*	2046	/*
2079	* find_dir(map, x, y, exclude) will search some close squares in the	2047	* find_dir(map, x, y, exclude) will search some close squares in the
2080	* given map at the given coordinates for live objects.	2048	* given map at the given coordinates for live objects.
…		…
2085	* Perhaps incorrectly, but I'm making the assumption that exclude	2053	* Perhaps incorrectly, but I'm making the assumption that exclude
2086	* is actually want is going to try and move there. We need this info	2054	* is actually want is going to try and move there. We need this info
2087	* because we have to know what movement the thing looking to move	2055	* because we have to know what movement the thing looking to move
2088	* there is capable of.	2056	* there is capable of.
2089	*/	2057	*/
2090		2058	int
2091	int find_dir(mapstruct *m, int x, int y, object *exclude) {	2059	find_dir (maptile *m, int x, int y, object *exclude)
		2060	{
2092	int i,max=SIZEOFFREE, mflags;	2061	int i, max = SIZEOFFREE, mflags;
		2062
2093	sint16 nx, ny;	2063	sint16 nx, ny;
2094	object *tmp;	2064	object *tmp;
2095	mapstruct *mp;	2065	maptile *mp;
		2066
2096	MoveType blocked, move_type;	2067	MoveType blocked, move_type;
2097		2068
2098	if (exclude && exclude->head) {	2069	if (exclude && exclude->head_ () != exclude)
		2070	{
2099	exclude = exclude->head;	2071	exclude = exclude->head;
2100	move_type = exclude->move_type;	2072	move_type = exclude->move_type;
2101	} else {	2073	}
		2074	else
		2075	{
2102	/* If we don't have anything, presume it can use all movement types. */	2076	/* If we don't have anything, presume it can use all movement types. */
2103	move_type=MOVE_ALL;	2077	move_type = MOVE_ALL;
		2078	}
		2079
		2080	for (i = 1; i < max; i++)
2104	}	2081	{
2105
2106	for(i=1;i<max;i++) {
2107	mp = m;	2082	mp = m;
2108	nx = x + freearr_x[i];	2083	nx = x + freearr_x[i];
2109	ny = y + freearr_y[i];	2084	ny = y + freearr_y[i];
2110		2085
2111	mflags = get_map_flags(m, &mp, nx, ny, &nx, &ny);	2086	mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny);
		2087
2112	if (mflags & P_OUT_OF_MAP) {	2088	if (mflags & P_OUT_OF_MAP)
		2089	max = maxfree[i];
		2090	else
		2091	{
		2092	mapspace &ms = mp->at (nx, ny);
		2093
		2094	blocked = ms.move_block;
		2095
		2096	if ((move_type & blocked) == move_type)
2113	max = maxfree[i];	2097	max = maxfree[i];
2114	} else {
2115	blocked = GET_MAP_MOVE_BLOCK(mp, nx, ny);
2116
2117	if ((move_type & blocked) == move_type) {
2118	max=maxfree[i];
2119	} else if (mflags & P_IS_ALIVE) {	2098	else if (mflags & P_IS_ALIVE)
2120	for (tmp=GET_MAP_OB(mp,nx,ny); tmp!= NULL; tmp=tmp->above) {	2099	{
		2100	for (tmp = ms.bot; tmp; tmp = tmp->above)
2121	if ((QUERY_FLAG(tmp,FLAG_MONSTER) || tmp->type==PLAYER) &&	2101	if ((tmp->flag [FLAG_MONSTER] || tmp->type == PLAYER)
2122	(tmp != exclude ||(tmp->head && tmp->head != exclude))) {	2102	&& (tmp != exclude || (tmp->head_ () != tmp && tmp->head_ () != exclude)))
2123	break;	2103	break;
2124	}	2104
2125	}
2126	if(tmp) {	2105	if (tmp)
2127	return freedir[i];	2106	return freedir[i];
2128	}
2129	}	2107	}
2130	}	2108	}
2131	}	2109	}
		2110
2132	return 0;	2111	return 0;
2133	}	2112	}
2134		2113
2135	/*	2114	/*
2136	* distance(object 1, object 2) will return the square of the	2115	* distance(object 1, object 2) will return the square of the
2137	* distance between the two given objects.	2116	* distance between the two given objects.
2138	*/	2117	*/
2139		2118	int
2140	int distance(const object *ob1, const object *ob2) {	2119	distance (const object *ob1, const object *ob2)
2141	int i;	2120	{
2142	i= (ob1->x - ob2->x)*(ob1->x - ob2->x)+	2121	return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y);
2143	(ob1->y - ob2->y)*(ob1->y - ob2->y);
2144	return i;
2145	}	2122	}
2146		2123
2147	/*	2124	/*
2148	* find_dir_2(delta-x,delta-y) will return a direction in which	2125	* find_dir_2(delta-x,delta-y) will return a direction in which
2149	* an object which has subtracted the x and y coordinates of another	2126	* an object which has subtracted the x and y coordinates of another
2150	* object, needs to travel toward it.	2127	* object, needs to travel toward it.
2151	*/	2128	*/
2152		2129	int
2153	int find_dir_2(int x, int y) {	2130	find_dir_2 (int x, int y)
		2131	{
2154	int q;	2132	int q;
2155		2133
2156	if(y)	2134	if (y)
2157	q=x*100/y;	2135	q = x * 100 / y;
2158	else if (x)	2136	else if (x)
2159	q= -300*x;	2137	q = -300 * x;
2160	else	2138	else
2161	return 0;	2139	return 0;
2162		2140
2163	if(y>0) {	2141	if (y > 0)
		2142	{
2164	if(q < -242)	2143	if (q < -242)
2165	return 3 ;	2144	return 3;
2166	if (q < -41)	2145	if (q < -41)
2167	return 2 ;	2146	return 2;
2168	if (q < 41)	2147	if (q < 41)
2169	return 1 ;	2148	return 1;
2170	if (q < 242)	2149	if (q < 242)
2171	return 8 ;	2150	return 8;
2172	return 7 ;	2151	return 7;
2173	}	2152	}
2174		2153
2175	if (q < -242)	2154	if (q < -242)
2176	return 7 ;	2155	return 7;
2177	if (q < -41)	2156	if (q < -41)
2178	return 6 ;	2157	return 6;
2179	if (q < 41)	2158	if (q < 41)
2180	return 5 ;	2159	return 5;
2181	if (q < 242)	2160	if (q < 242)
2182	return 4 ;	2161	return 4;
2183		2162
2184	return 3 ;	2163	return 3;
2185	}
2186
2187	/*
2188	* absdir(int): Returns a number between 1 and 8, which represent
2189	* the "absolute" direction of a number (it actually takes care of
2190	* "overflow" in previous calculations of a direction).
2191	*/
2192
2193	int absdir(int d) {
2194	while(d<1) d+=8;
2195	while(d>8) d-=8;
2196	return d;
2197	}	2164	}
2198		2165
2199	/*	2166	/*
2200	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is	2167	* dirdiff(dir1, dir2) returns how many 45-degrees differences there is
2201	* between two directions (which are expected to be absolute (see absdir())	2168	* between two directions (which are expected to be absolute (see absdir())
2202	*/	2169	*/
2203		2170	int
2204	int dirdiff(int dir1, int dir2) {	2171	dirdiff (int dir1, int dir2)
		2172	{
2205	int d;	2173	int d;
		2174
2206	d = abs(dir1 - dir2);	2175	d = abs (dir1 - dir2);
2207	if(d>4)	2176	if (d > 4)
2208	d = 8 - d;	2177	d = 8 - d;
		2178
2209	return d;	2179	return d;
2210	}	2180	}
2211		2181
2212	/* peterm:	2182	/* peterm:
2213	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.	2183	* do LOS stuff for ball lightning. Go after the closest VISIBLE monster.
…		…
2216	* This basically means that if direction is 15, then it could either go	2186	* This basically means that if direction is 15, then it could either go
2217	* direction 4, 14, or 16 to get back to where we are.	2187	* direction 4, 14, or 16 to get back to where we are.
2218	* Moved from spell_util.c to object.c with the other related direction	2188	* Moved from spell_util.c to object.c with the other related direction
2219	* functions.	2189	* functions.
2220	*/	2190	*/
2221
2222	int reduction_dir[SIZEOFFREE][3] = {	2191	int reduction_dir[SIZEOFFREE][3] = {
2223	{0,0,0}, /* 0 */	2192	{0, 0, 0}, /* 0 */
2224	{0,0,0}, /* 1 */	2193	{0, 0, 0}, /* 1 */
2225	{0,0,0}, /* 2 */	2194	{0, 0, 0}, /* 2 */
2226	{0,0,0}, /* 3 */	2195	{0, 0, 0}, /* 3 */
2227	{0,0,0}, /* 4 */	2196	{0, 0, 0}, /* 4 */
2228	{0,0,0}, /* 5 */	2197	{0, 0, 0}, /* 5 */
2229	{0,0,0}, /* 6 */	2198	{0, 0, 0}, /* 6 */
2230	{0,0,0}, /* 7 */	2199	{0, 0, 0}, /* 7 */
2231	{0,0,0}, /* 8 */	2200	{0, 0, 0}, /* 8 */
2232	{8,1,2}, /* 9 */	2201	{8, 1, 2}, /* 9 */
2233	{1,2,-1}, /* 10 */	2202	{1, 2, -1}, /* 10 */
2234	{2,10,12}, /* 11 */	2203	{2, 10, 12}, /* 11 */
2235	{2,3,-1}, /* 12 */	2204	{2, 3, -1}, /* 12 */
2236	{2,3,4}, /* 13 */	2205	{2, 3, 4}, /* 13 */
2237	{3,4,-1}, /* 14 */	2206	{3, 4, -1}, /* 14 */
2238	{4,14,16}, /* 15 */	2207	{4, 14, 16}, /* 15 */
2239	{5,4,-1}, /* 16 */	2208	{5, 4, -1}, /* 16 */
2240	{4,5,6}, /* 17 */	2209	{4, 5, 6}, /* 17 */
2241	{6,5,-1}, /* 18 */	2210	{6, 5, -1}, /* 18 */
2242	{6,20,18}, /* 19 */	2211	{6, 20, 18}, /* 19 */
2243	{7,6,-1}, /* 20 */	2212	{7, 6, -1}, /* 20 */
2244	{6,7,8}, /* 21 */	2213	{6, 7, 8}, /* 21 */
2245	{7,8,-1}, /* 22 */	2214	{7, 8, -1}, /* 22 */
2246	{8,22,24}, /* 23 */	2215	{8, 22, 24}, /* 23 */
2247	{8,1,-1}, /* 24 */	2216	{8, 1, -1}, /* 24 */
2248	{24,9,10}, /* 25 */	2217	{24, 9, 10}, /* 25 */
2249	{9,10,-1}, /* 26 */	2218	{9, 10, -1}, /* 26 */
2250	{10,11,-1}, /* 27 */	2219	{10, 11, -1}, /* 27 */
2251	{27,11,29}, /* 28 */	2220	{27, 11, 29}, /* 28 */
2252	{11,12,-1}, /* 29 */	2221	{11, 12, -1}, /* 29 */
2253	{12,13,-1}, /* 30 */	2222	{12, 13, -1}, /* 30 */
2254	{12,13,14}, /* 31 */	2223	{12, 13, 14}, /* 31 */
2255	{13,14,-1}, /* 32 */	2224	{13, 14, -1}, /* 32 */
2256	{14,15,-1}, /* 33 */	2225	{14, 15, -1}, /* 33 */
2257	{33,15,35}, /* 34 */	2226	{33, 15, 35}, /* 34 */
2258	{16,15,-1}, /* 35 */	2227	{16, 15, -1}, /* 35 */
2259	{17,16,-1}, /* 36 */	2228	{17, 16, -1}, /* 36 */
2260	{18,17,16}, /* 37 */	2229	{18, 17, 16}, /* 37 */
2261	{18,17,-1}, /* 38 */	2230	{18, 17, -1}, /* 38 */
2262	{18,19,-1}, /* 39 */	2231	{18, 19, -1}, /* 39 */
2263	{41,19,39}, /* 40 */	2232	{41, 19, 39}, /* 40 */
2264	{19,20,-1}, /* 41 */	2233	{19, 20, -1}, /* 41 */
2265	{20,21,-1}, /* 42 */	2234	{20, 21, -1}, /* 42 */
2266	{20,21,22}, /* 43 */	2235	{20, 21, 22}, /* 43 */
2267	{21,22,-1}, /* 44 */	2236	{21, 22, -1}, /* 44 */
2268	{23,22,-1}, /* 45 */	2237	{23, 22, -1}, /* 45 */
2269	{45,47,23}, /* 46 */	2238	{45, 47, 23}, /* 46 */
2270	{23,24,-1}, /* 47 */	2239	{23, 24, -1}, /* 47 */
2271	{24,9,-1}}; /* 48 */	2240	{24, 9, -1}
		2241	}; /* 48 */
2272		2242
2273	/* Recursive routine to step back and see if we can	2243	/* Recursive routine to step back and see if we can
2274	* find a path to that monster that we found. If not,	2244	* find a path to that monster that we found. If not,
2275	* we don't bother going toward it. Returns 1 if we	2245	* we don't bother going toward it. Returns 1 if we
2276	* can see a direct way to get it	2246	* can see a direct way to get it
2277	* Modified to be map tile aware -.MSW	2247	* Modified to be map tile aware -.MSW
2278	*/	2248	*/
2279		2249	int
2280
2281	int can_see_monsterP(mapstruct *m, int x, int y,int dir) {	2250	can_see_monsterP (maptile *m, int x, int y, int dir)
		2251	{
2282	sint16 dx, dy;	2252	sint16 dx, dy;
2283	int mflags;	2253	int mflags;
2284		2254
		2255	if (dir < 0)
2285	if(dir<0) return 0; /* exit condition: invalid direction */	2256	return 0; /* exit condition: invalid direction */
2286		2257
2287	dx = x + freearr_x[dir];	2258	dx = x + freearr_x[dir];
2288	dy = y + freearr_y[dir];	2259	dy = y + freearr_y[dir];
2289		2260
2290	mflags = get_map_flags(m, &m, dx, dy, &dx, &dy);	2261	mflags = get_map_flags (m, &m, dx, dy, &dx, &dy);
2291		2262
2292	/* This functional arguably was incorrect before - it was	2263	/* This functional arguably was incorrect before - it was
2293	* checking for P_WALL - that was basically seeing if	2264	* checking for P_WALL - that was basically seeing if
2294	* we could move to the monster - this is being more	2265	* we could move to the monster - this is being more
2295	* literal on if we can see it. To know if we can actually	2266	* literal on if we can see it. To know if we can actually
2296	* move to the monster, we'd need the monster passed in or	2267	* move to the monster, we'd need the monster passed in or
2297	* at least its move type.	2268	* at least its move type.
2298	*/	2269	*/
2299	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) return 0;	2270	if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW))
		2271	return 0;
2300		2272
2301	/* yes, can see. */	2273	/* yes, can see. */
2302	if(dir < 9) return 1;	2274	if (dir < 9)
		2275	return 1;
		2276
2303	return can_see_monsterP(m, x, y, reduction_dir[dir][0]) |	2277	return can_see_monsterP (m, x, y, reduction_dir[dir][0])
2304	can_see_monsterP(m,x,y, reduction_dir[dir][1]) |	2278	| can_see_monsterP (m, x, y, reduction_dir[dir][1])
2305	can_see_monsterP(m,x,y, reduction_dir[dir][2]);	2279	| can_see_monsterP (m, x, y, reduction_dir[dir][2]);
2306	}	2280	}
2307		2281
2308
2309
2310	/*	2282	/*
2311	* can_pick(picker, item): finds out if an object is possible to be	2283	* can_pick(picker, item): finds out if an object is possible to be
2312	* picked up by the picker. Returnes 1 if it can be	2284	* picked up by the picker. Returnes 1 if it can be
2313	* picked up, otherwise 0.	2285	* picked up, otherwise 0.
2314	*	2286	*
2315	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause	2287	* Cf 0.91.3 - don't let WIZ's pick up anything - will likely cause
2316	* core dumps if they do.	2288	* core dumps if they do.
2317	*	2289	*
2318	* Add a check so we can't pick up invisible objects (0.93.8)	2290	* Add a check so we can't pick up invisible objects (0.93.8)
2319	*/	2291	*/
2320		2292	int
2321	int can_pick(const object *who, const object *item) {	2293	can_pick (const object *who, const object *item)
		2294	{
2322	return /*QUERY_FLAG(who,FLAG_WIZ)||*/	2295	return /*QUERY_FLAG(who,FLAG_WIZ)|| */
2323	(item->weight>0&&!QUERY_FLAG(item,FLAG_NO_PICK)&&	2296	(item->weight > 0 && !QUERY_FLAG (item, FLAG_NO_PICK) &&
2324	!QUERY_FLAG(item,FLAG_ALIVE)&&!item->invisible &&	2297	!QUERY_FLAG (item, FLAG_ALIVE) && !item->invisible && (who->type == PLAYER || item->weight < who->weight / 3));
2325	(who->type==PLAYER||item->weight<who->weight/3));
2326	}	2298	}
2327
2328		2299
2329	/*	2300	/*
2330	* create clone from object to another	2301	* create clone from object to another
2331	*/	2302	*/
		2303	object *
2332	object *object_create_clone (object *asrc) {	2304	object_create_clone (object *asrc)
		2305	{
2333	object *dst = NULL,*tmp,*src,*part,*prev, *item;	2306	object *dst = 0, *tmp, *src, *prev, *item;
2334		2307
2335	if(!asrc) return NULL;	2308	if (!asrc)
2336	src = asrc;	2309	return 0;
2337	if(src->head)	2310
2338	src = src->head;	2311	src = asrc->head_ ();
2339		2312
2340	prev = NULL;	2313	prev = 0;
2341	for(part = src; part; part = part->more) {	2314	for (object *part = src; part; part = part->more)
2342	tmp = get_object();	2315	{
2343	copy_object(part,tmp);	2316	tmp = part->clone ();
2344	tmp->x -= src->x;	2317	tmp->x -= src->x;
2345	tmp->y -= src->y;	2318	tmp->y -= src->y;
		2319
2346	if(!part->head) {	2320	if (!part->head)
		2321	{
2347	dst = tmp;	2322	dst = tmp;
2348	tmp->head = NULL;	2323	tmp->head = 0;
		2324	}
2349	} else {	2325	else
2350	tmp->head = dst;	2326	tmp->head = dst;
2351	}	2327
2352	tmp->more = NULL;	2328	tmp->more = 0;
		2329
2353	if(prev)	2330	if (prev)
2354	prev->more = tmp;	2331	prev->more = tmp;
		2332
2355	prev = tmp;	2333	prev = tmp;
2356	}	2334	}
2357	/*** copy inventory ***/	2335
2358	for(item = src->inv; item; item = item->below) {	2336	for (item = src->inv; item; item = item->below)
2359	(void) insert_ob_in_ob(object_create_clone(item),dst);	2337	insert_ob_in_ob (object_create_clone (item), dst);
2360	}
2361		2338
2362	return dst;	2339	return dst;
2363	}
2364
2365	/* return true if the object was destroyed, 0 otherwise */
2366	int was_destroyed (const object *op, tag_t old_tag)
2367	{
2368	/* checking for FLAG_FREED isn't necessary, but makes this function more
2369	* robust */
2370	return op->count != old_tag || QUERY_FLAG (op, FLAG_FREED);
2371	}
2372
2373	/* GROS - Creates an object using a string representing its content. */
2374	/* Basically, we save the content of the string to a temp file, then call */
2375	/* load_object on it. I admit it is a highly inefficient way to make things, */
2376	/* but it was simple to make and allows reusing the load_object function. */
2377	/* Remember not to use load_object_str in a time-critical situation. */
2378	/* Also remember that multiparts objects are not supported for now. */
2379
2380	object* load_object_str(const char *obstr)
2381	{
2382	object *op;
2383	char filename[MAX_BUF];
2384	sprintf(filename,"%s/cfloadobstr2044",settings.tmpdir);
2385
2386	FILE *tempfile=fopen(filename,"w");
2387	if (tempfile == NULL)
2388	{
2389	LOG(llevError,"Error - Unable to access load object temp file\n");
2390	return NULL;
2391	};
2392	fprintf(tempfile,obstr);
2393	fclose(tempfile);
2394
2395	op=get_object();
2396
2397	object_thawer thawer (filename);
2398
2399	if (thawer)
2400	load_object(thawer,op,0);
2401
2402	LOG(llevDebug," load str completed, object=%s\n", &op->name);
2403	CLEAR_FLAG(op,FLAG_REMOVED);
2404
2405	return op;
2406	}	2340	}
2407		2341
2408	/* This returns the first object in who's inventory that	2342	/* This returns the first object in who's inventory that
2409	* has the same type and subtype match.	2343	* has the same type and subtype match.
2410	* returns NULL if no match.	2344	* returns NULL if no match.
2411	*/	2345	*/
		2346	object *
2412	object *find_obj_by_type_subtype(const object *who, int type, int subtype)	2347	find_obj_by_type_subtype (const object *who, int type, int subtype)
2413	{	2348	{
2414	object *tmp;
2415
2416	for (tmp=who->inv; tmp; tmp=tmp->below)	2349	for (object *tmp = who->inv; tmp; tmp = tmp->below)
2417	if (tmp->type == type && tmp->subtype == subtype) return tmp;	2350	if (tmp->type == type && tmp->subtype == subtype)
		2351	return tmp;
2418		2352
2419	return NULL;	2353	return 0;
2420	}	2354	}
2421		2355
2422	/* If ob has a field named key, return the link from the list,	2356	/* If ob has a field named key, return the link from the list,
2423	* otherwise return NULL.	2357	* otherwise return NULL.
2424	*	2358	*
2425	* key must be a passed in shared string - otherwise, this won't	2359	* key must be a passed in shared string - otherwise, this won't
2426	* do the desired thing.	2360	* do the desired thing.
2427	*/	2361	*/
		2362	key_value *
2428	key_value * get_ob_key_link(const object * ob, const char * key) {	2363	get_ob_key_link (const object *ob, const char *key)
2429	key_value * link;	2364	{
2430
2431	for (link = ob->key_values; link != NULL; link = link->next) {	2365	for (key_value *link = ob->key_values; link; link = link->next)
2432	if (link->key == key) {	2366	if (link->key == key)
2433	return link;	2367	return link;
2434	}	2368
2435	}	2369	return 0;
2436		2370	}
2437	return NULL;
2438	}
2439		2371
2440	/*	2372	/*
2441	* Returns the value of op has an extra_field for key, or NULL.	2373	* Returns the value of op has an extra_field for key, or NULL.
2442	*	2374	*
2443	* The argument doesn't need to be a shared string.	2375	* The argument doesn't need to be a shared string.
2444	*	2376	*
2445	* The returned string is shared.	2377	* The returned string is shared.
2446	*/	2378	*/
		2379	const char *
2447	const char * get_ob_key_value(const object * op, const char * const key) {	2380	get_ob_key_value (const object *op, const char *const key)
		2381	{
2448	key_value * link;	2382	key_value *link;
2449	const char * canonical_key;	2383	shstr_cmp canonical_key (key);
		2384
		2385	if (!canonical_key)
2450		2386	{
2451	canonical_key = shstr::find (key);
2452
2453	if (canonical_key == NULL) {
2454	/* 1. There being a field named key on any object	2387	/* 1. There being a field named key on any object
2455	* implies there'd be a shared string to find.	2388	* implies there'd be a shared string to find.
2456	* 2. Since there isn't, no object has this field.	2389	* 2. Since there isn't, no object has this field.
2457	* 3. Therefore, *this* object doesn't have this field.	2390	* 3. Therefore, *this* object doesn't have this field.
2458	*/	2391	*/
2459	return NULL;	2392	return 0;
2460	}	2393	}
2461		2394
2462	/* This is copied from get_ob_key_link() above -	2395	/* This is copied from get_ob_key_link() above -
2463	* only 4 lines, and saves the function call overhead.	2396	* only 4 lines, and saves the function call overhead.
2464	*/	2397	*/
2465	for (link = op->key_values; link != NULL; link = link->next) {	2398	for (link = op->key_values; link; link = link->next)
2466	if (link->key == canonical_key) {	2399	if (link->key == canonical_key)
2467	return link->value;	2400	return link->value;
2468	}
2469	}
2470	return NULL;
2471	}
2472		2401
		2402	return 0;
		2403	}
2473		2404
2474	/*	2405	/*
2475	* Updates the canonical_key in op to value.	2406	* Updates the canonical_key in op to value.
2476	*	2407	*
2477	* canonical_key is a shared string (value doesn't have to be).	2408	* canonical_key is a shared string (value doesn't have to be).
…		…
2479	* Unless add_key is TRUE, it won't add fields, only change the value of existing	2410	* Unless add_key is TRUE, it won't add fields, only change the value of existing
2480	* keys.	2411	* keys.
2481	*	2412	*
2482	* Returns TRUE on success.	2413	* Returns TRUE on success.
2483	*/	2414	*/
		2415	int
2484	int set_ob_key_value_s(object * op, const shstr &canonical_key, const char * value, int add_key) {	2416	set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
		2417	{
2485	key_value * field = NULL, *last=NULL;	2418	key_value *field = NULL, *last = NULL;
2486		2419
2487	for (field=op->key_values; field != NULL; field=field->next) {	2420	for (field = op->key_values; field != NULL; field = field->next)
		2421	{
2488	if (field->key != canonical_key) {	2422	if (field->key != canonical_key)
		2423	{
2489	last = field;	2424	last = field;
2490	continue;	2425	continue;
2491	}	2426	}
2492		2427
2493	if (value)	2428	if (value)
2494	field->value = value;	2429	field->value = value;
2495	else {	2430	else
		2431	{
2496	/* Basically, if the archetype has this key set,	2432	/* Basically, if the archetype has this key set,
2497	* we need to store the null value so when we save	2433	* we need to store the null value so when we save
2498	* it, we save the empty value so that when we load,	2434	* it, we save the empty value so that when we load,
2499	* we get this value back again.	2435	* we get this value back again.
2500	*/	2436	*/
2501	if (get_ob_key_link (&op->arch->clone, canonical_key))	2437	if (get_ob_key_link (op->arch, canonical_key))
2502	field->value = 0;	2438	field->value = 0;
		2439	else
		2440	{
		2441	if (last)
		2442	last->next = field->next;
2503	else	2443	else
2504	{
2505	if (last) last->next = field->next;
2506	else op->key_values = field->next;	2444	op->key_values = field->next;
2507		2445
2508	delete field;	2446	delete field;
2509	}	2447	}
2510	}	2448	}
2511	return TRUE;	2449	return TRUE;
2512	}	2450	}
2513	/* IF we get here, key doesn't exist */	2451	/* IF we get here, key doesn't exist */
2514		2452
2515	/* No field, we'll have to add it. */	2453	/* No field, we'll have to add it. */
2516		2454
2517	if (!add_key) {	2455	if (!add_key)
2518	return FALSE;	2456	return FALSE;
2519	}	2457
2520	/* There isn't any good reason to store a null	2458	/* There isn't any good reason to store a null
2521	* value in the key/value list. If the archetype has	2459	* value in the key/value list. If the archetype has
2522	* this key, then we should also have it, so shouldn't	2460	* this key, then we should also have it, so shouldn't
2523	* be here. If user wants to store empty strings,	2461	* be here. If user wants to store empty strings,
2524	* should pass in ""	2462	* should pass in ""
2525	*/	2463	*/
2526	if (value == NULL) return TRUE;	2464	if (value == NULL)
2527
2528	field = new key_value;
2529
2530	field->key = canonical_key;
2531	field->value = value;
2532	/* Usual prepend-addition. */
2533	field->next = op->key_values;
2534	op->key_values = field;
2535
2536	return TRUE;	2465	return TRUE;
		2466
		2467	field = new key_value;
		2468
		2469	field->key = canonical_key;
		2470	field->value = value;
		2471	/* Usual prepend-addition. */
		2472	field->next = op->key_values;
		2473	op->key_values = field;
		2474
		2475	return TRUE;
2537	}	2476	}
2538		2477
2539	/*	2478	/*
2540	* Updates the key in op to value.	2479	* Updates the key in op to value.
2541	*	2480	*
…		…
2543	* and not add new ones.	2482	* and not add new ones.
2544	* In general, should be little reason FALSE is ever passed in for add_key	2483	* In general, should be little reason FALSE is ever passed in for add_key
2545	*	2484	*
2546	* Returns TRUE on success.	2485	* Returns TRUE on success.
2547	*/	2486	*/
		2487	int
2548	int set_ob_key_value(object * op, const char *key, const char * value, int add_key)	2488	set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2549	{	2489	{
2550	shstr key_ (key);	2490	shstr key_ (key);
		2491
2551	return set_ob_key_value_s (op, key_, value, add_key);	2492	return set_ob_key_value_s (op, key_, value, add_key);
2552	}	2493	}
		2494
		2495	object::depth_iterator::depth_iterator (object *container)
		2496	: iterator_base (container)
		2497	{
		2498	while (item->inv)
		2499	item = item->inv;
		2500	}
		2501
		2502	void
		2503	object::depth_iterator::next ()
		2504	{
		2505	if (item->below)
		2506	{
		2507	item = item->below;
		2508
		2509	while (item->inv)
		2510	item = item->inv;
		2511	}
		2512	else
		2513	item = item->env;
		2514	}
		2515
		2516	const char *
		2517	object::flag_desc (char *desc, int len) const
		2518	{
		2519	char *p = desc;
		2520	bool first = true;
		2521
		2522	*p = 0;
		2523
		2524	for (int i = 0; i < NUM_FLAGS; i++)
		2525	{
		2526	if (len <= 10) // magic constant!
		2527	{
		2528	snprintf (p, len, ",...");
		2529	break;
		2530	}
		2531
		2532	if (flag [i])
		2533	{
		2534	int cnt = snprintf (p, len, "%s%d", first ? "" : ",", i);
		2535	len -= cnt;
		2536	p += cnt;
		2537	first = false;
		2538	}
		2539	}
		2540
		2541	return desc;
		2542	}
		2543
		2544	// return a suitable string describing an object in enough detail to find it
		2545	const char *
		2546	object::debug_desc (char *info) const
		2547	{
		2548	char flagdesc[512];
		2549	char info2[256 * 4];
		2550	char *p = info;
		2551
		2552	p += snprintf (p, 512, "{cnt:%d,uuid:%s,name:\"%s\"%s%s,flags:[%s],type:%d}",
		2553	count,
		2554	uuid.c_str (),
		2555	&name,
		2556	title ? "\",title:\"" : "",
		2557	title ? (const char *)title : "",
		2558	flag_desc (flagdesc, 512), type);
		2559
		2560	if (!this->flag[FLAG_REMOVED] && env)
		2561	p += snprintf (p, 256, "(in %s)", env->debug_desc (info2));
		2562
		2563	if (map)
		2564	p += snprintf (p, 256, "(on %s@%d+%d)", &map->path, x, y);
		2565
		2566	return info;
		2567	}
		2568
		2569	const char *
		2570	object::debug_desc () const
		2571	{
		2572	static char info[3][256 * 4];
		2573	static int info_idx;
		2574
		2575	return debug_desc (info [++info_idx % 3]);
		2576	}
		2577
		2578	struct region *
		2579	object::region () const
		2580	{
		2581	return map ? map->region (x, y)
		2582	: region::default_region ();
		2583	}
		2584
		2585	const materialtype_t *
		2586	object::dominant_material () const
		2587	{
		2588	if (materialtype_t *mt = name_to_material (materialname))
		2589	return mt;
		2590
		2591	return name_to_material (shstr_unknown);
		2592	}
		2593
		2594	void
		2595	object::open_container (object *new_container)
		2596	{
		2597	if (container == new_container)
		2598	return;
		2599
		2600	if (object *old_container = container)
		2601	{
		2602	if (INVOKE_OBJECT (CLOSE, old_container, ARG_OBJECT (this)))
		2603	return;
		2604
		2605	#if 0
		2606	// remove the "Close old_container" object.
		2607	if (object *closer = old_container->inv)
		2608	if (closer->type == CLOSE_CON)
		2609	closer->destroy ();
		2610	#endif
		2611
		2612	old_container->flag [FLAG_APPLIED] = 0;
		2613	container = 0;
		2614
		2615	esrv_update_item (UPD_FLAGS, this, old_container);
		2616	new_draw_info_format (NDI_UNIQUE, 0, this, "You close %s.", query_name (old_container));
		2617	play_sound (sound_find ("chest_close"));
		2618	}
		2619
		2620	if (new_container)
		2621	{
		2622	if (INVOKE_OBJECT (OPEN, new_container, ARG_OBJECT (this)))
		2623	return;
		2624
		2625	// TODO: this does not seem to serve any purpose anymore?
		2626	#if 0
		2627	// insert the "Close Container" object.
		2628	if (archetype *closer = new_container->other_arch)
		2629	{
		2630	object *closer = arch_to_object (new_container->other_arch);
		2631	closer->flag [FLAG_NO_MAP_SAVE] = 1;
		2632	new_container->insert (closer);
		2633	}
		2634	#endif
		2635
		2636	new_draw_info_format (NDI_UNIQUE, 0, this, "You open %s.", query_name (new_container));
		2637
		2638	new_container->flag [FLAG_APPLIED] = 1;
		2639	container = new_container;
		2640
		2641	esrv_update_item (UPD_FLAGS, this, new_container);
		2642	esrv_send_inventory (this, new_container);
		2643	play_sound (sound_find ("chest_open"));
		2644	}
		2645	}
		2646
		2647	object *
		2648	object::force_find (const shstr name)
		2649	{
		2650	/* cycle through his inventory to look for the MARK we want to
		2651	* place
		2652	*/
		2653	for (object *tmp = inv; tmp; tmp = tmp->below)
		2654	if (tmp->type == FORCE && tmp->slaying == name)
		2655	return splay (tmp);
		2656
		2657	return 0;
		2658	}
		2659
		2660	void
		2661	object::force_add (const shstr name, int duration)
		2662	{
		2663	if (object *force = force_find (name))
		2664	force->destroy ();
		2665
		2666	object *force = get_archetype (FORCE_NAME);
		2667
		2668	force->slaying = name;
		2669	force->stats.food = 1;
		2670	force->speed_left = -1.f;
		2671
		2672	force->set_speed (duration ? 1.f / duration : 0.f);
		2673	force->flag [FLAG_IS_USED_UP] = true;
		2674	force->flag [FLAG_APPLIED] = true;
		2675
		2676	insert (force);
		2677	}
		2678
		2679	void
		2680	object::play_sound (faceidx sound)
		2681	{
		2682	if (!sound)
		2683	return;
		2684
		2685	if (flag [FLAG_REMOVED])
		2686	return;
		2687
		2688	if (env)
		2689	{
		2690	if (object *pl = in_player ())
		2691	pl->contr->play_sound (sound);
		2692	}
		2693	else
		2694	map->play_sound (sound, x, y);
		2695	}
		2696

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