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Comparing deliantra/server/server/monster.C (file contents):
Revision 1.2 by root, Sat Aug 26 23:36:34 2006 UTC vs.
Revision 1.45 by root, Sun Nov 16 03:52:13 2008 UTC

1	/*	1	/*
2	* static char *rcsid_monster_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: monster.C,v 1.2 2006/08/26 23:36:34 root Exp $";	3	*
		4	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
		6	* Copyright (©) 1992,2007 Frank Tore Johansen
		7	*
		8	* Deliantra is free software: you can redistribute it and/or modify
		9	* it under the terms of the GNU General Public License as published by
		10	* the Free Software Foundation, either version 3 of the License, or
		11	* (at your option) any later version.
		12	*
		13	* This program is distributed in the hope that it will be useful,
		14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		16	* GNU General Public License for more details.
		17	*
		18	* You should have received a copy of the GNU General Public License
		19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
		20	*
		21	* The authors can be reached via e-mail to <support@deliantra.net>
4	*/	22	*/
5		23
6	/*
7	CrossFire, A Multiplayer game for X-windows
8
9	Copyright (C) 2002 Mark Wedel & Crossfire Development Team
10	Copyright (C) 1992 Frank Tore Johansen
11
12	This program is free software; you can redistribute it and/or modify
13	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
15	(at your option) any later version.
16
17	This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.
21
22	You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software
24	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25
26	The authors can be reached via e-mail at crossfire-devel@real-time.com
27	*/
28
29	#include <global.h>	24	#include <global.h>
30	#ifndef __CEXTRACT__
31	#include <sproto.h>	25	#include <sproto.h>
32	#include <spells.h>	26	#include <spells.h>
33	#include <skills.h>	27	#include <skills.h>
34	#endif
35		28
36
37	#define MIN_MON_RADIUS 3 /* minimum monster detection radius */	29	#define MIN_MON_RADIUS 3 /* minimum monster detection radius */
38
39		30
40	/* checks npc->enemy and returns that enemy if still valid,	31	/* checks npc->enemy and returns that enemy if still valid,
41	* NULL otherwise.	32	* NULL otherwise.
42	* this is map tile aware.	33	* this is map tile aware.
43	* If this returns an enemy, the range vector rv should also be	34	* If this returns an enemy, the range vector rv should also be
44	* set to sane values.	35	* set to sane values.
45	*/	36	*/
		37	object *
46	object *check_enemy(object *npc, rv_vector *rv) {	38	check_enemy (object *npc, rv_vector * rv)
47		39	{
		40
48	/* if this is pet, let him attack the same enemy as his owner	41	/* if this is pet, let him attack the same enemy as his owner
49	* TODO: when there is no ower enemy, try to find a target,	42	* TODO: when there is no ower enemy, try to find a target,
50	* which CAN attack the owner. */	43	* which CAN attack the owner. */
51	if ((npc->attack_movement & HI4) == PETMOVE)	44	if ((npc->attack_movement & HI4) == PETMOVE)
52	{	45	{
53	if (npc->owner == NULL)	46	if (npc->owner == NULL)
54	npc->enemy = NULL;	47	npc->enemy = NULL;
55	else if (npc->enemy == NULL)	48	else if (npc->enemy == NULL)
56	npc->enemy = npc->owner->enemy;	49	npc->enemy = npc->owner->enemy;
57	}	50	}
58		51
59	/* periodically, a monster mayu change its target. Also, if the object	52	/* periodically, a monster mayu change its target. Also, if the object
60	* has been destroyed, etc, clear the enemy.	53	* has been destroyed, etc, clear the enemy.
61	* TODO: this should be changed, because it invokes to attack forced or	54	* TODO: this should be changed, because it invokes to attack forced or
62	* attacked monsters to leave the attacker alone, before it is destroyed	55	* attacked monsters to leave the attacker alone, before it is destroyed
63	*/	56	*/
64	/* i had removed the random target leave, this invokes problems with friendly	57	/* i had removed the random target leave, this invokes problems with friendly
65	* objects, getting attacked and defending herself - they don't try to attack	58	* objects, getting attacked and defending herself - they don't try to attack
66	* again then but perhaps get attack on and on	59	* again then but perhaps get attack on and on
67	* If we include a aggravated flag in , we can handle evil vs evil and good vs good	60	* If we include a aggravated flag in , we can handle evil vs evil and good vs good
68	* too. */	61	* too. */
69		62
70	if(npc->enemy)	63	if (npc->enemy)
71	{	64	{
72	/* I broke these if's apart to better be able to see what	65	/* I broke these if's apart to better be able to see what
73	* the grouping checks are. Code is the same.	66	* the grouping checks are. Code is the same.
74	*/	67	*/
75	if ( QUERY_FLAG(npc->enemy,FLAG_REMOVED) ||	68	if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) ||
76	QUERY_FLAG(npc->enemy,FLAG_FREED) ||	69	QUERY_FLAG (npc->enemy, FLAG_FREED) ||
77	!on_same_map(npc, npc->enemy) ||	70	!on_same_map (npc, npc->enemy) || npc == npc->enemy || QUERY_FLAG (npc, FLAG_NEUTRAL) || QUERY_FLAG (npc->enemy, FLAG_NEUTRAL))
78	npc == npc->enemy ||
79	QUERY_FLAG(npc, FLAG_NEUTRAL) ||
80	QUERY_FLAG(npc->enemy, FLAG_NEUTRAL))
81	npc->enemy = NULL;
82
83	else if (QUERY_FLAG(npc, FLAG_FRIENDLY) && (
84	(QUERY_FLAG(npc->enemy, FLAG_FRIENDLY) && !(should_arena_attack(npc, npc->owner, npc->enemy))) ||
85	((npc->enemy->type == PLAYER) && !(should_arena_attack(npc, npc->owner, npc->enemy)))
86	|| npc->enemy == npc->owner))
87	npc->enemy = NULL;	71	npc->enemy = NULL;
88		72
89		73	else if (QUERY_FLAG (npc, FLAG_FRIENDLY) && ((QUERY_FLAG (npc->enemy, FLAG_FRIENDLY)
90	else if (!QUERY_FLAG(npc, FLAG_FRIENDLY) &&	74	&& !(should_arena_attack (npc, npc->owner, npc->enemy)))
91	(!QUERY_FLAG(npc->enemy, FLAG_FRIENDLY) && npc->enemy->type!=PLAYER))	75	|| ((npc->enemy->type == PLAYER) && !(should_arena_attack (npc, npc->owner, npc->enemy)))
		76	|| npc->enemy == npc->owner))
92	npc->enemy=NULL;	77	npc->enemy = NULL;
93		78
		79
		80	else if (!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (npc->enemy, FLAG_FRIENDLY) && npc->enemy->type != PLAYER))
		81	npc->enemy = NULL;
		82
94	/* I've noticed that pets could sometimes get an arrow as the	83	/* I've noticed that pets could sometimes get an arrow as the
95	* target enemy - this code below makes sure the enemy is something	84	* target enemy - this code below makes sure the enemy is something
96	* that should be attacked. My guess is that the arrow hits	85	* that should be attacked. My guess is that the arrow hits
97	* the creature/owner, and so the creature then takes that	86	* the creature/owner, and so the creature then takes that
98	* as the enemy to attack.	87	* as the enemy to attack.
99	*/	88	*/
100	else if (!QUERY_FLAG(npc->enemy, FLAG_MONSTER) &&	89	else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER)
101	!QUERY_FLAG(npc->enemy,FLAG_GENERATOR) &&	90	&& !QUERY_FLAG (npc->enemy, FLAG_GENERATOR)
102	npc->enemy->type!=PLAYER && npc->enemy->type != GOLEM)	91	&& npc->enemy->type != PLAYER
		92	&& npc->enemy->type != GOLEM)
103	npc->enemy=NULL;	93	npc->enemy = NULL;
104		94
105	}	95	}
		96
106	return can_detect_enemy(npc,npc->enemy,rv)?npc->enemy:NULL;	97	return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : NULL;
107	}	98	}
108		99
109	/* Returns the nearest living creature (monster or generator).	100	/* Returns the nearest living creature (monster or generator).
110	* Modified to deal with tiled maps properly.	101	* Modified to deal with tiled maps properly.
111	* Also fixed logic so that monsters in the lower directions were more	102	* Also fixed logic so that monsters in the lower directions were more
…		…
118	* the first few directions, it could very well choose something	109	* the first few directions, it could very well choose something
119	* 3 spaces away even though something directly north is closer.	110	* 3 spaces away even though something directly north is closer.
120	*	111	*
121	* this function is map tile aware.	112	* this function is map tile aware.
122	*/	113	*/
		114	object *
123	object *find_nearest_living_creature(object *npc) {	115	find_nearest_living_creature (object *npc)
		116	{
124	int i,mflags;	117	int i, mflags;
125	sint16 nx,ny;	118	sint16 nx, ny;
126	mapstruct *m;	119	maptile *m;
127	object *tmp;
128	int search_arr[SIZEOFFREE];	120	int search_arr[SIZEOFFREE];
129		121
130	get_search_arr(search_arr);	122	get_search_arr (search_arr);
		123
131	for(i=0;i<SIZEOFFREE;i++) {	124	for (i = 0; i < SIZEOFFREE; i++)
		125	{
132	/* modified to implement smart searching using search_arr	126	/* modified to implement smart searching using search_arr
133	* guidance array to determine direction of search order	127	* guidance array to determine direction of search order
134	*/	128	*/
135	nx = npc->x + freearr_x[search_arr[i]];	129	nx = npc->x + freearr_x[search_arr[i]];
136	ny = npc->y + freearr_y[search_arr[i]];	130	ny = npc->y + freearr_y[search_arr[i]];
137	m = npc->map;	131	m = npc->map;
138		132
139	mflags = get_map_flags(m, &m, nx, ny, &nx, &ny);	133	mflags = get_map_flags (m, &m, nx, ny, &nx, &ny);
		134
140	if (mflags & P_OUT_OF_MAP) continue;	135	if (mflags & P_OUT_OF_MAP)
		136	continue;
141		137
142	if (mflags & P_IS_ALIVE) {	138	if (mflags & P_IS_ALIVE)
143	tmp=get_map_ob(m,nx,ny);	139	{
144	while(tmp!=NULL && !QUERY_FLAG(tmp,FLAG_MONSTER)&&	140	for (object *tmp = m->at (nx, ny).top; tmp; tmp = tmp->below)
145	!QUERY_FLAG(tmp,FLAG_GENERATOR ) && tmp->type!=PLAYER)	141	if (tmp->flag [FLAG_MONSTER] || tmp->flag [FLAG_GENERATOR] || tmp->type == PLAYER)
146	tmp=tmp->above;	142	if (can_see_monsterP (m, nx, ny, i))
147		143	return tmp;
148	if (!tmp) {	144	}
149	LOG(llevDebug,"find_nearest_living_creature: map %s (%d,%d) has is_alive set but did not find a monster?\n",
150	m->path, nx, ny);
151	}	145	}
152	else {
153	if(can_see_monsterP(m,nx,ny,i))
154	return tmp;
155	}
156	} /* is something living on this space */
157	}
158	return NULL; /* nothing found */
159	}
160		146
		147	return 0;
		148	}
161		149
162	/* Tries to find an enmy for npc. We pass the range vector since	150	/* Tries to find an enemy for npc. We pass the range vector since
163	* our caller will find the information useful.	151	* our caller will find the information useful.
164	* Currently, only move_monster calls this function.	152	* Currently, only move_monster calls this function.
165	* Fix function so that we always make calls to get_rangevector	153	* Fix function so that we always make calls to get_rangevector
166	* if we have a valid target - function as not doing so in	154	* if we have a valid target - function as not doing so in
167	* many cases.	155	* many cases.
168	*/	156	*/
169		157	object *
170	object *find_enemy(object *npc, rv_vector *rv)	158	find_enemy (object *npc, rv_vector * rv)
171	{	159	{
172	object *attacker, *tmp=NULL;	160	object *attacker, *tmp = NULL;
173		161
174	attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */	162	attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */
175	npc->attacked_by = NULL; /* always clear the attacker entry */	163	npc->attacked_by = 0; /* always clear the attacker entry */
176		164
177	/* if we berserk, we don't care about others - we attack all we can find */	165	/* if we berserk, we don't care about others - we attack all we can find */
178	if(QUERY_FLAG(npc,FLAG_BERSERK)) {	166	if (QUERY_FLAG (npc, FLAG_BERSERK))
		167	{
179	tmp = find_nearest_living_creature(npc);	168	tmp = find_nearest_living_creature (npc);
		169
		170	if (tmp)
180	if (tmp) get_rangevector(npc, tmp, rv, 0);	171	get_rangevector (npc, tmp, rv, 0);
		172
181	return tmp;	173	return tmp;
182	}	174	}
183		175
184	/* Here is the main enemy selection.	176	/* Here is the main enemy selection.
185	* We want this: if there is an enemy, attack him until its not possible or	177	* We want this: if there is an enemy, attack him until its not possible or
186	* one of both is dead.	178	* one of both is dead.
187	* If we have no enemy and we are...	179	* If we have no enemy and we are...
188	* a monster: try to find a player, a pet or a friendly monster	180	* a monster: try to find a player, a pet or a friendly monster
189	* a friendly: only target a monster which is targeting you first or targeting a player	181	* a friendly: only target a monster which is targeting you first or targeting a player
190	* a neutral: fight a attacker (but there should be none), then do nothing	182	* a neutral: fight a attacker (but there should be none), then do nothing
191	* a pet: attack player enemy or a monster	183	* a pet: attack player enemy or a monster
192	*/	184	*/
193		185
194	/* pet move */	186	/* pet move */
195	if ((npc->attack_movement & HI4) == PETMOVE) {	187	if ((npc->attack_movement & HI4) == PETMOVE)
		188	{
196	tmp= get_pet_enemy(npc,rv);	189	tmp = get_pet_enemy (npc, rv);
		190
		191	if (tmp)
197	if (tmp) get_rangevector(npc, tmp, rv, 0);	192	get_rangevector (npc, tmp, rv, 0);
		193
198	return tmp;	194	return tmp;
199	}
200		195	}
		196
201	/* we check our old enemy. */	197	/* we check our old enemy. */
202	if((tmp=check_enemy(npc, rv))==NULL)	198	if (!(tmp = check_enemy (npc, rv)))
203	{	199	{
204	if(attacker) /* if we have an attacker, check him */	200	if (attacker) /* if we have an attacker, check him */
205	{	201	{
206	/* we want be sure this is the right one! */	202	/* TODO: thats not finished */
207	if(attacker->count == npc->attacked_by_count)	203	/* we don't want a fight evil vs evil or good against non evil */
		204
		205	if (QUERY_FLAG (npc, FLAG_NEUTRAL) || QUERY_FLAG (attacker, FLAG_NEUTRAL) || /* neutral */
		206	(QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) ||
		207	(!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (attacker, FLAG_FRIENDLY) && attacker->type != PLAYER)))
		208	CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */
		209	else if (on_same_map (npc, attacker)) /* thats the only thing we must know... */
208	{	210	{
209	/* TODO: thats not finished */
210	/* we don't want a fight evil vs evil or good against non evil */
211
212	if( QUERY_FLAG(npc, FLAG_NEUTRAL) || QUERY_FLAG(attacker, FLAG_NEUTRAL) || /* neutral */
213	(QUERY_FLAG(npc, FLAG_FRIENDLY) && QUERY_FLAG(attacker, FLAG_FRIENDLY)) ||
214	(!QUERY_FLAG(npc, FLAG_FRIENDLY) &&
215	(!QUERY_FLAG(attacker, FLAG_FRIENDLY) && attacker->type!=PLAYER)) )
216	CLEAR_FLAG(npc,FLAG_SLEEP); /* skip it, but lets wakeup */
217	else if(on_same_map(npc, attacker)) /* thats the only thing we must know... */
218	{
219	CLEAR_FLAG(npc,FLAG_SLEEP); /* well, NOW we really should wake up! */	211	CLEAR_FLAG (npc, FLAG_SLEEP); /* well, NOW we really should wake up! */
220	npc->enemy = attacker;	212	npc->enemy = attacker;
221	return attacker; /* yes, we face our attacker! */	213	return attacker; /* yes, we face our attacker! */
222	}
223	}	214	}
224	}	215	}
225		216
226	/* we have no legal enemy or attacker, so we try to target a new one */	217	/* we have no legal enemy or attacker, so we try to target a new one */
227	if(!QUERY_FLAG(npc, FLAG_UNAGGRESSIVE) && !QUERY_FLAG(npc, FLAG_FRIENDLY) &&	218	if (!QUERY_FLAG (npc, FLAG_UNAGGRESSIVE) && !QUERY_FLAG (npc, FLAG_FRIENDLY) && !QUERY_FLAG (npc, FLAG_NEUTRAL))
228	!QUERY_FLAG(npc, FLAG_NEUTRAL))
229	{
230	npc->enemy = get_nearest_player(npc);
231	if (npc->enemy)
232	tmp = check_enemy(npc,rv);
233	}
234		219	{
235	}	220	npc->enemy = get_nearest_player (npc);
		221	if (npc->enemy)
		222	tmp = check_enemy (npc, rv);
		223	}
236		224
		225	}
		226
237	return tmp;	227	return tmp;
238	}	228	}
239		229
240	/* Sees if this monster should wake up.	230	/* Sees if this monster should wake up.
241	* Currently, this is only called from move_monster, and	231	* Currently, this is only called from move_monster, and
242	* if enemy is set, then so should be rv.	232	* if enemy is set, then so should be rv.
243	* returns 1 if the monster should wake up, 0 otherwise.	233	* returns 1 if the monster should wake up, 0 otherwise.
244	*/	234	*/
245		235	int
246	int check_wakeup(object *op, object *enemy, rv_vector *rv) {	236	check_wakeup (object *op, object *enemy, rv_vector * rv)
		237	{
247	int radius = op->stats.Wis>MIN_MON_RADIUS?op->stats.Wis:MIN_MON_RADIUS;	238	int radius = op->stats.Wis > MIN_MON_RADIUS ? op->stats.Wis : MIN_MON_RADIUS;
248		239
249	/* Trim work - if no enemy, no need to do anything below */	240	/* Trim work - if no enemy, no need to do anything below */
250	if (!enemy) return 0;	241	if (!enemy)
		242	return 0;
251		243
252	/* blinded monsters can only find nearby objects to attack */	244	/* blinded monsters can only find nearby objects to attack */
253	if(QUERY_FLAG(op, FLAG_BLIND))	245	if (QUERY_FLAG (op, FLAG_BLIND))
254	radius = MIN_MON_RADIUS;	246	radius = MIN_MON_RADIUS;
255		247
256	/* This covers the situation where the monster is in the dark	248	/* This covers the situation where the monster is in the dark
257	* and has an enemy. If the enemy has no carried light (or isnt	249	* and has an enemy. If the enemy has no carried light (or isnt
258	* glowing!) then the monster has trouble finding the enemy.	250	* glowing!) then the monster has trouble finding the enemy.
259	* Remember we already checked to see if the monster can see in	251	* Remember we already checked to see if the monster can see in
260	* the dark. */	252	* the dark. */
261		253
262	else if(op->map && op->map->darkness>0 && enemy && !enemy->invisible &&	254	else if (op->map && op->map->darkness > 0 && enemy && !enemy->invisible &&
263	!stand_in_light(enemy) &&
264	(!QUERY_FLAG(op,FLAG_SEE_IN_DARK) || !QUERY_FLAG(op,FLAG_SEE_INVISIBLE))) {	255	!stand_in_light (enemy) && (!QUERY_FLAG (op, FLAG_SEE_IN_DARK) || !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
		256	{
265	int dark = radius/(op->map->darkness);	257	int dark = radius / (op->map->darkness);
		258
266	radius = (dark>MIN_MON_RADIUS)?(dark+1):MIN_MON_RADIUS;	259	radius = (dark > MIN_MON_RADIUS) ? (dark + 1) : MIN_MON_RADIUS;
267	}	260	}
268	else if(!QUERY_FLAG(op,FLAG_SLEEP)) return 1;	261	else if (!QUERY_FLAG (op, FLAG_SLEEP))
		262	return 1;
269		263
270	/* enemy should already be on this map, so don't really need to check	264	/* enemy should already be on this map, so don't really need to check
271	* for that.	265	* for that.
272	*/	266	*/
273	if (rv->distance < (QUERY_FLAG(enemy, FLAG_STEALTH)?(radius/2)+1:radius)) {	267	if (rv->distance < (unsigned int) (QUERY_FLAG (enemy, FLAG_STEALTH) ? (radius / 2) + 1 : radius))
		268	{
274	CLEAR_FLAG(op,FLAG_SLEEP);	269	CLEAR_FLAG (op, FLAG_SLEEP);
275	return 1;	270	return 1;
276	}	271	}
277	return 0;	272	return 0;
278	}	273	}
279		274
		275	int
280	int move_randomly(object *op) {	276	move_randomly (object *op)
		277	{
281	int i;	278	int i;
282		279
283	/* Give up to 15 chances for a monster to move randomly */	280	/* Give up to 15 chances for a monster to move randomly */
284	for(i=0;i<15;i++) {	281	for (i = 0; i < 15; i++)
285	if(move_object(op,RANDOM()%8+1))	282	{
		283	if (move_object (op, rndm (8) + 1))
286	return 1;	284	return 1;
287	}	285	}
288	return 0;	286	return 0;
289	}	287	}
290		288
291	/*	289	/*
292	* Move-monster returns 1 if the object has been freed, otherwise 0.	290	* Move-monster returns 1 if the object has been freed, otherwise 0.
293	*/	291	*/
294		292	int
295	int move_monster(object *op) {	293	move_monster (object *op)
		294	{
296	int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */	295	int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */
297	object *owner, *enemy, *part, *oph=op;	296	object *owner, *enemy, *part, *oph = op;
298	rv_vector rv;	297	rv_vector rv;
299		298
300	/* Monsters not on maps don't do anything. These monsters are things	299	/* Monsters not on maps don't do anything. These monsters are things
301	* Like royal guards in city dwellers inventories.	300	* Like royal guards in city dwellers inventories.
302	*/	301	*/
303	if (!op->map) return 0;	302	if (!op->map)
		303	return 0;
304		304
305	/* for target facing, we copy this value here for fast access */	305	/* for target facing, we copy this value here for fast access */
306	if(oph->head) /* force update the head - one arch one pic */	306	if (oph->head) /* force update the head - one arch one pic */
307	oph = oph->head;	307	oph = oph->head;
308		308
309	if (QUERY_FLAG(op, FLAG_NO_ATTACK)) /* we never ever attack */	309	if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */
310	enemy = op->enemy = NULL;	310	enemy = op->enemy = NULL;
311	else if((enemy= find_enemy(op, &rv)))	311	else if ((enemy = find_enemy (op, &rv)))
312	{
313	/* we have an enemy, just tell him we want him dead */	312	/* we have an enemy, just tell him we want him dead */
314	enemy->attacked_by = op; /* our ptr */	313	enemy->attacked_by = op; /* our ptr */
315	enemy->attacked_by_count = op->count; /* our tag */	314
316	}
317
318	/* generate hp, if applicable */	315	/* generate hp, if applicable */
319	if(op->stats.Con > 0 && op->stats.hp < op->stats.maxhp) {	316	if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
		317	{
320		318
321	/* last heal is in funny units. Dividing by speed puts	319	/* last heal is in funny units. Dividing by speed puts
322	* the regeneration rate on a basis of time instead of
323	* #moves the monster makes. The scaling by 8 is
324	* to capture 8th's of a hp fraction regens
325	*
326	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)
327	* overflow might produce monsters with negative hp.
328	*/
329
330	op->last_heal+= (int)((float)(8*op->stats.Con)/FABS(op->speed));
331	op->stats.hp = MIN((sint32)op->stats.hp+op->last_heal/32, op->stats.maxhp); /* causes Con/4 hp/tick */
332	op->last_heal%=32;
333
334	/* So if the monster has gained enough HP that they are no longer afraid */
335	if (QUERY_FLAG(op,FLAG_RUN_AWAY) &&
336	op->stats.hp >= (signed short)(((float)op->run_away/(float)100)*
337	(float)op->stats.maxhp))
338	CLEAR_FLAG(op, FLAG_RUN_AWAY);
339
340	if(op->stats.hp>op->stats.maxhp)
341	op->stats.hp=op->stats.maxhp;
342	}
343
344	/* generate sp, if applicable */
345	if(op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp) {
346
347	/* last_sp is in funny units. Dividing by speed puts
348	* the regeneration rate on a basis of time instead of	320	* the regeneration rate on a basis of time instead of
349	* #moves the monster makes. The scaling by 8 is	321	* #moves the monster makes. The scaling by 8 is
		322	* to capture 8th's of a hp fraction regens
		323	*
		324	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)
		325	* overflow might produce monsters with negative hp.
		326	*/
		327
		328	op->last_heal += (int) ((float) (8 * op->stats.Con) / FABS (op->speed));
		329	op->stats.hp = MIN ((sint32) op->stats.hp + op->last_heal / 32, op->stats.maxhp); /* causes Con/4 hp/tick */
		330	op->last_heal %= 32;
		331
		332	/* So if the monster has gained enough HP that they are no longer afraid */
		333	if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short) (((float) op->run_away / (float) 100) * (float) op->stats.maxhp))
		334	CLEAR_FLAG (op, FLAG_RUN_AWAY);
		335
		336	if (op->stats.hp > op->stats.maxhp)
		337	op->stats.hp = op->stats.maxhp;
		338	}
		339
		340	/* generate sp, if applicable */
		341	if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
		342	{
		343
		344	/* last_sp is in funny units. Dividing by speed puts
		345	* the regeneration rate on a basis of time instead of
		346	* #moves the monster makes. The scaling by 8 is
350	* to capture 8th's of a sp fraction regens	347	* to capture 8th's of a sp fraction regens
351	*	348	*
352	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)	349	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)
353	* overflow might produce monsters with negative sp.	350	* overflow might produce monsters with negative sp.
354	*/	351	*/
355		352
356	op->last_sp+= (int)((float)(8*op->stats.Pow)/FABS(op->speed));	353	op->last_sp += (int) ((float) (8 * op->stats.Pow) / FABS (op->speed));
357	op->stats.sp = MIN(op->stats.sp+op->last_sp/128, op->stats.maxsp); /* causes Pow/16 sp/tick */	354	op->stats.sp = MIN (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
358	op->last_sp%=128;	355	op->last_sp %= 128;
359	}	356	}
360		357
361	/* this should probably get modified by many more values.	358	/* this should probably get modified by many more values.
362	* (eg, creatures resistance to fear, level, etc. )	359	* (eg, creatures resistance to fear, level, etc. )
363	*/	360	*/
364	if(QUERY_FLAG(op, FLAG_SCARED) &&!(RANDOM()%20)) {	361	if (QUERY_FLAG (op, FLAG_SCARED) && !(rndm (20)))
		362	{
365	CLEAR_FLAG(op,FLAG_SCARED); /* Time to regain some "guts"... */	363	CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
		364	}
		365
		366	if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
		367	return QUERY_FLAG (op, FLAG_FREED);
		368
		369	if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
		370	((op->map->darkness > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
366	}	371	{
		372	if (!check_wakeup (op, enemy, &rv))
		373	return 0;
		374	}
367		375
368	if (INVOKE_OBJECT (MOVE, op, ARG_OBJECT (op->enemy)))//TODO: should go away	376	/* check if monster pops out of hidden spot */
		377	if (op->flag [FLAG_HIDDEN])
		378	do_hidden_move (op);
		379
		380	if (op->pick_up)
		381	monster_check_pickup (op);
		382
		383	if (op->will_apply)
		384	monster_apply_below (op); /* Check for items to apply below */
		385
		386	/* If we don't have an enemy, do special movement or the like */
		387	if (!enemy)
		388	{
		389	if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
		390	{
		391	op->drop_and_destroy ();
		392	return 1;
		393	}
		394
		395	/* Probably really a bug for a creature to have both
		396	* stand still and a movement type set.
		397	*/
		398	if (!QUERY_FLAG (op, FLAG_STAND_STILL))
		399	{
		400	if (op->attack_movement & HI4)
		401	{
		402	switch (op->attack_movement & HI4)
		403	{
		404	case (PETMOVE):
		405	pet_move (op);
		406	break;
		407
		408	case (CIRCLE1):
		409	circ1_move (op);
		410	break;
		411
		412	case (CIRCLE2):
		413	circ2_move (op);
		414	break;
		415
		416	case (PACEV):
		417	pace_movev (op);
		418	break;
		419
		420	case (PACEH):
		421	pace_moveh (op);
		422	break;
		423
		424	case (PACEV2):
		425	pace2_movev (op);
		426	break;
		427
		428	case (PACEH2):
		429	pace2_moveh (op);
		430	break;
		431
		432	case (RANDO):
		433	rand_move (op);
		434	break;
		435
		436	case (RANDO2):
		437	move_randomly (op);
		438	break;
		439	}
		440	return 0;
		441	}
		442	else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
		443	(void) move_randomly (op);
		444
		445	} /* stand still */
369	return 0;	446	return 0;
		447	} /* no enemy */
370		448
371	if ( QUERY_FLAG(op, FLAG_SLEEP) || QUERY_FLAG(op, FLAG_BLIND) ||	449	/* We have an enemy. Block immediately below is for pets */
372	((op->map->darkness>0) && !QUERY_FLAG(op,FLAG_SEE_IN_DARK) &&	450	if ((op->attack_movement & HI4) == PETMOVE
373	!QUERY_FLAG(op,FLAG_SEE_INVISIBLE))) {	451	&& (owner = op->owner) != NULL
374	if(!check_wakeup(op,enemy,&rv))	452	&& !on_same_map (op, owner)
375	return 0;	453	&& !owner->flag [FLAG_REMOVED])
		454	return follow_owner (op, owner);
		455
		456	/* doppleganger code to change monster facing to that of the nearest
		457	* player. Hmm. The code is here, but no monster in the current
		458	* arch set uses it.
		459	*/
		460	if ((op->race != NULL) && strcmp (op->race, "doppleganger") == 0)
376	}	461	{
		462	op->face = enemy->face;
		463	op->name = enemy->name;
		464	}
377		465
378	/* check if monster pops out of hidden spot */	466	/* Calculate range information for closest body part - this
379	if(op->hide) do_hidden_move(op);	467	* is used for the 'skill' code, which isn't that smart when
		468	* it comes to figuring it out - otherwise, giants throw boulders
		469	* into themselves.
		470	*/
		471	get_rangevector (op, enemy, &rv, 0);
380		472
381	if(op->pick_up)	473	/* Move the check for scared up here - if the monster was scared,
382	monster_check_pickup(op);	474	* we were not doing any of the logic below, so might as well save
		475	* a few cpu cycles.
		476	*/
		477	if (!QUERY_FLAG (op, FLAG_SCARED))
		478	{
		479	rv_vector rv1;
383		480
384	if(op->will_apply)	481	/* now we test every part of an object .... this is a real ugly piece of code */
385	monster_apply_below(op); /* Check for items to apply below */	482	for (part = op; part; part = part->more)
		483	{
		484	get_rangevector (part, enemy, &rv1, 0x1);
		485	dir = rv1.direction;
386		486
387	/* If we don't have an enemy, do special movement or the like */	487	/* hm, not sure about this part - in original was a scared flag here too
388	if(!enemy) {	488	* but that we test above... so can be old code here
		489	*/
389	if(QUERY_FLAG(op, FLAG_ONLY_ATTACK)) {	490	if (QUERY_FLAG (op, FLAG_RUN_AWAY))
390	remove_ob(op);	491	dir = absdir (dir + 4);
391	free_object(op);	492
		493	if (QUERY_FLAG (op, FLAG_CONFUSED))
		494	dir = absdir (dir + rndm (3) + rndm (3) - 2);
		495
		496	if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(rndm (3)))
		497	if (monster_cast_spell (op, part, enemy, dir, &rv1))
392	return 1;	498	return 0;
393	}
394		499
395	/* Probably really a bug for a creature to have both	500	if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(rndm (3)))
396	* stand still and a movement type set.	501	if (monster_use_scroll (op, part, enemy, dir, &rv1))
397	*/	502	return 0;
		503
		504	if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(rndm (3)))
		505	if (monster_use_range (op, part, enemy, dir))
		506	return 0;
		507
		508	if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(rndm (3)))
		509	if (monster_use_skill (op, rv.part, enemy, rv.direction))
		510	return 0;
		511
		512	if (QUERY_FLAG (op, FLAG_READY_BOW) && !(rndm (2)))
		513	if (monster_use_bow (op, part, enemy, dir))
		514	return 0;
		515	} /* for processing of all parts */
		516	} /* If not scared */
		517
		518
		519	part = rv.part;
		520	dir = rv.direction;
		521
		522	if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
		523	dir = absdir (dir + 4);
		524
		525	if (QUERY_FLAG (op, FLAG_CONFUSED))
		526	dir = absdir (dir + rndm (3) + rndm (3) - 2);
		527
		528	pre_att_dir = dir; /* remember the original direction */
		529
		530	if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
		531	{
		532	switch (op->attack_movement & LO4)
		533	{
		534	case DISTATT:
		535	dir = dist_att (dir, op, enemy, part, &rv);
		536	break;
		537
		538	case RUNATT:
		539	dir = run_att (dir, op, enemy, part, &rv);
		540	break;
		541
		542	case HITRUN:
		543	dir = hitrun_att (dir, op, enemy);
		544	break;
		545
		546	case WAITATT:
		547	dir = wait_att (dir, op, enemy, part, &rv);
		548	break;
		549
		550	case RUSH: /* default - monster normally moves towards player */
		551	case ALLRUN:
		552	break;
		553
		554	case DISTHIT:
		555	dir = disthit_att (dir, op, enemy, part, &rv);
		556	break;
		557
		558	case WAIT2:
		559	dir = wait_att2 (dir, op, enemy, part, &rv);
		560	break;
		561
		562	default:
		563	LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
		564	}
		565	}
		566
		567	if (!dir)
		568	return 0;
		569
398	if(!QUERY_FLAG(op, FLAG_STAND_STILL)) {	570	if (!QUERY_FLAG (op, FLAG_STAND_STILL))
		571	{
		572	if (move_object (op, dir)) /* Can the monster move directly toward player? */
		573	{
		574	/* elmex: Turn our monster after it moved if it has DISTATT attack */
399	if (op->attack_movement & HI4)	575	if ((op->attack_movement & LO4) == DISTATT)
		576	op->direction = pre_att_dir;
		577
		578	return 0;
		579	}
		580
		581	if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
		582	{
		583
		584	/* Try move around corners if !close */
		585	int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || RANDOM () & 1) ? 1 : 2;
		586
		587	for (diff = 1; diff <= maxdiff; diff++)
400	{	588	{
401	switch (op->attack_movement & HI4) {	589	/* try different detours */
402	case (PETMOVE):	590	int m = 1 - (RANDOM () & 2); /* Try left or right first? */
403	pet_move (op);
404	break;
405		591
406	case (CIRCLE1):	592	if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
407	circ1_move (op);
408	break;
409
410	case (CIRCLE2):
411	circ2_move (op);
412	break;
413
414	case (PACEV):
415	pace_movev(op);
416	break;
417
418	case (PACEH):
419	pace_moveh(op);
420	break;
421
422	case (PACEV2):
423	pace2_movev (op);
424	break;
425
426	case (PACEH2):
427	pace2_moveh (op);
428	break;
429
430	case (RANDO):
431	rand_move (op);
432	break;
433
434	case (RANDO2):
435	move_randomly (op);
436	break;
437	}
438	return 0;
439	}
440	else if (QUERY_FLAG(op,FLAG_RANDOM_MOVE))
441	(void) move_randomly(op);
442
443	} /* stand still */
444	return 0;	593	return 0;
445	} /* no enemy */
446
447	/* We have an enemy. Block immediately below is for pets */
448	if((op->attack_movement&HI4) == PETMOVE && (owner = get_owner(op)) != NULL && !on_same_map(op,owner))
449	return follow_owner(op, owner);
450
451	/* doppleganger code to change monster facing to that of the nearest
452	* player. Hmm. The code is here, but no monster in the current
453	* arch set uses it.
454	*/
455	if ( (op->race != NULL)&& strcmp(op->race,"doppleganger") == 0)
456	{
457	op->face = enemy->face;
458	if (op->name)
459	free_string(op->name);
460	add_refcount(op->name = enemy->name);
461	}
462
463	/* Calculate range information for closest body part - this
464	* is used for the 'skill' code, which isn't that smart when
465	* it comes to figuring it out - otherwise, giants throw boulders
466	* into themselves.
467	*/
468	get_rangevector(op, enemy, &rv, 0);
469
470	/* Move the check for scared up here - if the monster was scared,
471	* we were not doing any of the logic below, so might as well save
472	* a few cpu cycles.
473	*/
474	if (!QUERY_FLAG(op, FLAG_SCARED))
475	{
476	rv_vector rv1;
477
478	/* now we test every part of an object .... this is a real ugly piece of code */
479	for (part=op; part!=NULL; part=part->more) {
480	get_rangevector(part, enemy, &rv1, 0x1);
481	dir=rv1.direction;
482
483	/* hm, not sure about this part - in original was a scared flag here too
484	* but that we test above... so can be old code here
485	*/
486	if(QUERY_FLAG(op,FLAG_RUN_AWAY))
487	dir=absdir(dir+4);
488	if(QUERY_FLAG(op,FLAG_CONFUSED))
489	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);
490
491	if(QUERY_FLAG(op,FLAG_CAST_SPELL) && !(RANDOM()%3)) {
492	if(monster_cast_spell(op,part,enemy,dir,&rv1))
493	return 0;
494	}
495
496	if(QUERY_FLAG(op,FLAG_READY_SCROLL) && !(RANDOM()%3)) {
497	if(monster_use_scroll(op,part,enemy,dir,&rv1))
498	return 0;
499	}
500
501	if(QUERY_FLAG(op,FLAG_READY_RANGE)&&!(RANDOM()%3)) {
502	if(monster_use_range(op,part,enemy,dir))
503	return 0;
504	}
505	if(QUERY_FLAG(op,FLAG_READY_SKILL)&&!(RANDOM()%3)) {
506	if(monster_use_skill(op,rv.part,enemy,rv.direction))
507	return 0;
508	}
509	if(QUERY_FLAG(op,FLAG_READY_BOW)&&!(RANDOM()%2)) {
510	if(monster_use_bow(op,part,enemy,dir))
511	return 0;
512	}
513	} /* for processing of all parts */
514	} /* If not scared */
515
516
517	part = rv.part;
518	dir=rv.direction;
519
520	if(QUERY_FLAG(op, FLAG_SCARED) || QUERY_FLAG(op,FLAG_RUN_AWAY))
521	dir=absdir(dir+4);
522
523	if(QUERY_FLAG(op,FLAG_CONFUSED))
524	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);
525
526	pre_att_dir = dir; /* remember the original direction */
527
528	if ((op->attack_movement & LO4) && !QUERY_FLAG(op, FLAG_SCARED))
529	{
530	switch (op->attack_movement & LO4) {
531	case DISTATT:
532	dir = dist_att (dir,op,enemy,part,&rv);
533	break;
534
535	case RUNATT:
536	dir = run_att (dir,op,enemy,part,&rv);
537	break;
538
539	case HITRUN:
540	dir = hitrun_att(dir,op,enemy);
541	break;
542
543	case WAITATT:
544	dir = wait_att (dir,op,enemy,part,&rv);
545	break;
546
547	case RUSH: /* default - monster normally moves towards player */
548	case ALLRUN:
549	break;
550
551	case DISTHIT:
552	dir = disthit_att (dir,op,enemy,part,&rv);
553	break;
554
555	case WAIT2:
556	dir = wait_att2 (dir,op,enemy,part,&rv);
557	break;
558
559	default:
560	LOG(llevDebug,"Illegal low mon-move: %d\n",op->attack_movement & LO4);
561	}
562	}
563
564	if (!dir)
565	return 0;
566
567	if (!QUERY_FLAG(op,FLAG_STAND_STILL)) {
568	if(move_object(op,dir)) /* Can the monster move directly toward player? */
569	{
570	/* elmex: Turn our monster after it moved if it has DISTATT attack */
571	if ((op->attack_movement & LO4) == DISTATT)
572	op->direction = pre_att_dir;
573
574	return 0;
575	}	594	}
576		595	}
577	if(QUERY_FLAG(op, FLAG_SCARED) || !can_hit(part,enemy,&rv)
578	|| QUERY_FLAG(op,FLAG_RUN_AWAY)) {
579
580	/* Try move around corners if !close */
581	int maxdiff = (QUERY_FLAG(op, FLAG_ONLY_ATTACK) || RANDOM()&1) ? 1 : 2;
582	for(diff = 1; diff <= maxdiff; diff++) {
583	/* try different detours */
584	int m = 1-(RANDOM()&2); /* Try left or right first? */
585	if(move_object(op,absdir(dir + diff*m)) ||
586	move_object(op,absdir(dir - diff*m)))
587	return 0;
588	}
589	}
590	} /* if monster is not standing still */	596	} /* if monster is not standing still */
591		597
592	/* elmex: Turn our monster after it moved if it has DISTATT attack */	598	/* elmex: Turn our monster after it moved if it has DISTATT attack */
593	if ((op->attack_movement & LO4) == DISTATT)	599	if ((op->attack_movement & LO4) == DISTATT)
594	op->direction = pre_att_dir;	600	op->direction = pre_att_dir;
595		601
596	/*	602	/*
597	* Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random	603	* Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
598	* direction if they can't move away.	604	* direction if they can't move away.
599	*/	605	*/
600	if (!QUERY_FLAG(op, FLAG_ONLY_ATTACK)&&(QUERY_FLAG(op,FLAG_RUN_AWAY)||QUERY_FLAG(op, FLAG_SCARED)))	606	if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
601	if(move_randomly(op))	607	if (move_randomly (op))
602	return 0;	608	return 0;
603		609
604	/*	610	/*
605	* Try giving the monster a new enemy - the player that is closest	611	* Try giving the monster a new enemy - the player that is closest
606	* to it. In this way, it won't just keep trying to get to a target	612	* to it. In this way, it won't just keep trying to get to a target
607	* that is inaccessible.	613	* that is inaccessible.
608	* This could be more clever - it should go through a list of several	614	* This could be more clever - it should go through a list of several
609	* enemies, as it is now, you could perhaps get situations where there	615	* enemies, as it is now, you could perhaps get situations where there
610	* are two players flanking the monster at close distance, but which	616	* are two players flanking the monster at close distance, but which
611	* the monster can't get to, and a third one at a far distance that	617	* the monster can't get to, and a third one at a far distance that
612	* the monster could get to - as it is, the monster won't look at that	618	* the monster could get to - as it is, the monster won't look at that
613	* third one.	619	* third one.
614	*/	620	*/
615	if (!QUERY_FLAG(op, FLAG_FRIENDLY) && enemy == op->enemy)	621	if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
616	{	622	{
617	object *nearest_player = get_nearest_player(op);	623	object *nearest_player = get_nearest_player (op);
		624
618	if (nearest_player && nearest_player != enemy && !can_hit(part,enemy,&rv)) {	625	if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
		626	{
619	op->enemy = NULL;	627	op->enemy = NULL;
620	enemy = nearest_player;	628	enemy = nearest_player;
621	}	629	}
622	}	630	}
623		631
624	if(!QUERY_FLAG(op, FLAG_SCARED)&&can_hit(part,enemy,&rv))	632	if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
625	{	633	{
626	/* The adjustement to wc that was here before looked totally bogus -	634	/* The adjustement to wc that was here before looked totally bogus -
627	* since wc can in fact get negative, that would mean by adding	635	* since wc can in fact get negative, that would mean by adding
628	* the current wc, the creature gets better? Instead, just	636	* the current wc, the creature gets better? Instead, just
629	* add a fixed amount - nasty creatures that are runny away should	637	* add a fixed amount - nasty creatures that are runny away should
630	* still be pretty nasty.	638	* still be pretty nasty.
631	*/	639	*/
632	if(QUERY_FLAG(op,FLAG_RUN_AWAY))	640	if (QUERY_FLAG (op, FLAG_RUN_AWAY))
633	{	641	{
634	part->stats.wc+=10;	642	part->stats.wc += 10;
635	(void)skill_attack(enemy,part,0,NULL, NULL);
636	part->stats.wc-=10;
637	}
638	else
639	(void)skill_attack(enemy,part,0,NULL, NULL);	643	(void) skill_attack (enemy, part, 0, NULL, NULL);
		644	part->stats.wc -= 10;
		645	}
		646	else
		647	(void) skill_attack (enemy, part, 0, NULL, NULL);
640	} /* if monster is in attack range */	648	} /* if monster is in attack range */
641		649
642	if(QUERY_FLAG(part,FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */	650	if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
643	return 1;	651	return 1;
644		652
645	if(QUERY_FLAG(op, FLAG_ONLY_ATTACK))	653	if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
646	{
647	remove_ob(op);
648	free_object(op);
649	return 1;
650	}	654	{
		655	op->drop_and_destroy ();
		656	return 1;
		657	}
		658
651	return 0;	659	return 0;
652	}	660	}
		661
		662	int
653	int can_hit(object *ob1,object *ob2, rv_vector *rv) {	663	can_hit (object *ob1, object *ob2, rv_vector * rv)
		664	{
654	object *more;	665	object *more;
655	rv_vector rv1;	666	rv_vector rv1;
656		667
657	if(QUERY_FLAG(ob1,FLAG_CONFUSED)&&!(RANDOM()%3))	668	if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(rndm (3)))
658	return 0;	669	return 0;
659		670
660	if (abs(rv->distance_x)<2&&abs(rv->distance_y)<2) return 1;	671	if (abs (rv->distance_x) < 2 && abs (rv->distance_y) < 2)
		672	return 1;
661		673
662	/* check all the parts of ob2 - just because we can't get to	674	/* check all the parts of ob2 - just because we can't get to
663	* its head doesn't mean we don't want to pound its feet	675	* its head doesn't mean we don't want to pound its feet
664	*/	676	*/
665	for (more = ob2->more; more!=NULL; more = more->more) {	677	for (more = ob2->more; more != NULL; more = more->more)
		678	{
666	get_rangevector(ob1, more, &rv1, 0);	679	get_rangevector (ob1, more, &rv1, 0);
667	if (abs(rv1.distance_x)<2&&abs(rv1.distance_y)<2) return 1;	680	if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
		681	return 1;
668	}	682	}
669	return 0;	683	return 0;
670		684
671	}	685	}
672		686
673	/* Returns 1 is monster should cast spell sp at an enemy	687	/* Returns 1 is monster should cast spell sp at an enemy
674	* Returns 0 if the monster should not cast this spell.	688	* Returns 0 if the monster should not cast this spell.
…		…
684	* This could be a lot smarter - if there are few monsters around,	698	* This could be a lot smarter - if there are few monsters around,
685	* then disease might not be as bad. Likewise, if the monster is damaged,	699	* then disease might not be as bad. Likewise, if the monster is damaged,
686	* the right type of healing spell could be useful.	700	* the right type of healing spell could be useful.
687	*/	701	*/
688		702
		703	static int
689	static int monster_should_cast_spell(object *monster, object *spell_ob)	704	monster_should_cast_spell (object *monster, object *spell_ob)
690	{	705	{
691	if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||	706	if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||
692	spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||	707	spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||
693	spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE ||	708	spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE ||
694	spell_ob->subtype == SP_MAGIC_MISSILE || spell_ob->subtype == SP_SUMMON_GOLEM ||	709	spell_ob->subtype == SP_MAGIC_MISSILE || spell_ob->subtype == SP_SUMMON_GOLEM ||
695	spell_ob->subtype == SP_MAGIC_WALL || spell_ob->subtype == SP_SUMMON_MONSTER ||	710	spell_ob->subtype == SP_MAGIC_WALL || spell_ob->subtype == SP_SUMMON_MONSTER ||
696	spell_ob->subtype == SP_MOVING_BALL || spell_ob->subtype == SP_SWARM ||	711	spell_ob->subtype == SP_MOVING_BALL || spell_ob->subtype == SP_SWARM || spell_ob->subtype == SP_INVISIBLE)
697	spell_ob->subtype == SP_INVISIBLE)
698		712
699	return 1;
700
701	return 0;	713	return 1;
		714
		715	return 0;
702	}	716	}
703		717
704		718
705	#define MAX_KNOWN_SPELLS 20	719	#define MAX_KNOWN_SPELLS 20
706		720
707	/* Returns a randomly selected spell. This logic is still	721	/* Returns a randomly selected spell. This logic is still
708	* less than ideal. This code also only seems to deal with	722	* less than ideal. This code also only seems to deal with
709	* wizard spells, as the check is against sp, and not grace.	723	* wizard spells, as the check is against sp, and not grace.
710	* can mosnters know cleric spells?	724	* can mosnters know cleric spells?
711	*/	725	*/
		726	object *
712	object *monster_choose_random_spell(object *monster) {	727	monster_choose_random_spell (object *monster)
		728	{
713	object *altern[MAX_KNOWN_SPELLS];	729	object *altern[MAX_KNOWN_SPELLS];
714	object *tmp;	730	object *tmp;
715	int i=0;	731	int i = 0;
716		732
717	for(tmp=monster->inv;tmp!=NULL;tmp=tmp->below)	733	for (tmp = monster->inv; tmp != NULL; tmp = tmp->below)
718	if (tmp->type==SPELLBOOK || tmp->type==SPELL) {	734	if (tmp->type == SPELLBOOK || tmp->type == SPELL)
		735	{
719	/* Check and see if it's actually a useful spell.	736	/* Check and see if it's actually a useful spell.
720	* If its a spellbook, the spell is actually the inventory item.	737	* If its a spellbook, the spell is actually the inventory item.
721	* if it is a spell, then it is just the object itself.	738	* if it is a spell, then it is just the object itself.
722	*/	739	*/
723	if (monster_should_cast_spell(monster, (tmp->type==SPELLBOOK)?tmp->inv:tmp)) {	740	if (monster_should_cast_spell (monster, (tmp->type == SPELLBOOK) ? tmp->inv : tmp))
724	altern[i++]=tmp;	741	{
725	if(i==MAX_KNOWN_SPELLS)	742	altern[i++] = tmp;
726	break;	743	if (i == MAX_KNOWN_SPELLS)
		744	break;
		745	}
727	}	746	}
728	}
729	if(!i)	747	if (!i)
730	return NULL;	748	return NULL;
731	return altern[RANDOM()%i];	749	return altern[RANDOM () % i];
732	}	750	}
733		751
734	/* This checks to see if the monster should cast a spell/ability.	752	/* This checks to see if the monster should cast a spell/ability.
735	* it returns true if the monster casts a spell, 0 if he doesn't.	753	* it returns true if the monster casts a spell, 0 if he doesn't.
736	* head is the head of the monster.	754	* head is the head of the monster.
…		…
738	* pl is the target.	756	* pl is the target.
739	* dir is the direction to case.	757	* dir is the direction to case.
740	* rv is the vector which describes where the enemy is.	758	* rv is the vector which describes where the enemy is.
741	*/	759	*/
742		760
		761	int
743	int monster_cast_spell(object *head, object *part,object *pl,int dir, rv_vector *rv) {	762	monster_cast_spell (object *head, object *part, object *pl, int dir, rv_vector * rv)
		763	{
744	object *spell_item;	764	object *spell_item;
745	object *owner;	765	object *owner;
746	rv_vector rv1;	766	rv_vector rv1;
747		767
748	/* If you want monsters to cast spells over friends, this spell should	768	/* If you want monsters to cast spells over friends, this spell should
749	* be removed. It probably should be in most cases, since monsters still	769	* be removed. It probably should be in most cases, since monsters still
750	* don't care about residual effects (ie, casting a cone which may have a	770	* don't care about residual effects (ie, casting a cone which may have a
751	* clear path to the player, the side aspects of the code will still hit	771	* clear path to the player, the side aspects of the code will still hit
752	* other monsters)	772	* other monsters)
753	*/	773	*/
754	if(!(dir=path_to_player(part,pl,0)))	774	if (!(dir = path_to_player (part, pl, 0)))
755	return 0;	775	return 0;
		776
		777	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
756		778	{
757	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {
758	get_rangevector(head, owner, &rv1, 0x1);	779	get_rangevector (head, owner, &rv1, 0x1);
759	if(dirdiff(dir,rv1.direction) < 2) {	780	if (dirdiff (dir, rv1.direction) < 2)
		781	{
760	return 0; /* Might hit owner with spell */	782	return 0; /* Might hit owner with spell */
761	}	783	}
762	}	784	}
763		785
764	if(QUERY_FLAG(head,FLAG_CONFUSED))	786	if (QUERY_FLAG (head, FLAG_CONFUSED))
765	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	787	dir = absdir (dir + rndm (3) + rndm (3) - 2);
766		788
767	/* If the monster hasn't already chosen a spell, choose one	789	/* If the monster hasn't already chosen a spell, choose one
768	* I'm not sure if it really make sense to pre-select spells (events	790	* I'm not sure if it really make sense to pre-select spells (events
769	* could be different by the time the monster goes again).	791	* could be different by the time the monster goes again).
770	*/	792	*/
771	if(head->spellitem==NULL) {	793	if (head->spellitem == NULL)
		794	{
772	if((spell_item=monster_choose_random_spell(head))==NULL) {	795	if ((spell_item = monster_choose_random_spell (head)) == NULL)
		796	{
773	LOG(llevMonster,"Turned off spells in %s\n",head->name);	797	LOG (llevMonster, "Turned off spells in %s\n", &head->name);
774	CLEAR_FLAG(head, FLAG_CAST_SPELL); /* Will be turned on when picking up book */	798	CLEAR_FLAG (head, FLAG_CAST_SPELL); /* Will be turned on when picking up book */
		799	return 0;
		800	}
		801	if (spell_item->type == SPELLBOOK)
		802	{
		803	if (!spell_item->inv)
		804	{
		805	LOG (llevError, "spellbook %s does not contain a spell?\n", &spell_item->name);
		806	return 0;
		807	}
		808	spell_item = spell_item->inv;
		809	}
		810	}
		811	else
		812	spell_item = head->spellitem;
		813
		814	if (!spell_item)
775	return 0;	815	return 0;
776	}
777	if (spell_item->type == SPELLBOOK) {
778	if (!spell_item->inv) {
779	LOG(llevError,"spellbook %s does not contain a spell?\n", spell_item->name);
780	return 0;
781	}
782	spell_item=spell_item->inv;
783	}
784	}
785	else
786	spell_item=head->spellitem;
787		816
788	if (!spell_item) return 0;
789
790	/* Best guess this is a defensive/healing spell */	817	/* Best guess this is a defensive/healing spell */
791	if (spell_item->range<=1 || spell_item->stats.dam < 0)	818	if (spell_item->range <= 1 || spell_item->stats.dam < 0)
792	dir = 0;	819	dir = 0;
793		820
794	/* Monster doesn't have enough spell-points */	821	/* Monster doesn't have enough spell-points */
795	if(head->stats.sp<SP_level_spellpoint_cost(head,spell_item, SPELL_MANA))	822	if (head->stats.sp < SP_level_spellpoint_cost (head, spell_item, SPELL_MANA))
796	return 0;	823	return 0;
797		824
798	if(head->stats.grace<SP_level_spellpoint_cost(head,spell_item, SPELL_GRACE))	825	if (head->stats.grace < SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE))
799	return 0;	826	return 0;
800		827
801	head->stats.sp-=SP_level_spellpoint_cost(head,spell_item, SPELL_MANA);	828	head->stats.sp -= SP_level_spellpoint_cost (head, spell_item, SPELL_MANA);
802	head->stats.grace-=SP_level_spellpoint_cost(head,spell_item, SPELL_GRACE);	829	head->stats.grace -= SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE);
803		830
804	/* set this to null, so next time monster will choose something different */	831	/* set this to null, so next time monster will choose something different */
805	head->spellitem = NULL;	832	head->spellitem = NULL;
806		833
807	return cast_spell(part,part,dir, spell_item, NULL);	834	return cast_spell (part, part, dir, spell_item, NULL);
808	}	835	}
809		836
810		837
		838	int
811	int monster_use_scroll(object *head, object *part,object *pl,int dir, rv_vector *rv) {	839	monster_use_scroll (object *head, object *part, object *pl, int dir, rv_vector * rv)
		840	{
812	object *scroll;	841	object *scroll;
813	object *owner;	842	object *owner;
814	rv_vector rv1;	843	rv_vector rv1;
815		844
816	/* If you want monsters to cast spells over friends, this spell should	845	/* If you want monsters to cast spells over friends, this spell should
817	* be removed. It probably should be in most cases, since monsters still	846	* be removed. It probably should be in most cases, since monsters still
818	* don't care about residual effects (ie, casting a cone which may have a	847	* don't care about residual effects (ie, casting a cone which may have a
819	* clear path to the player, the side aspects of the code will still hit	848	* clear path to the player, the side aspects of the code will still hit
820	* other monsters)	849	* other monsters)
821	*/	850	*/
822	if(!(dir=path_to_player(part,pl,0)))	851	if (!(dir = path_to_player (part, pl, 0)))
823	return 0;	852	return 0;
		853
		854	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
824		855	{
825	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {
826	get_rangevector(head, owner, &rv1, 0x1);	856	get_rangevector (head, owner, &rv1, 0x1);
827	if(dirdiff(dir,rv1.direction) < 2) {	857	if (dirdiff (dir, rv1.direction) < 2)
		858	{
828	return 0; /* Might hit owner with spell */	859	return 0; /* Might hit owner with spell */
829	}	860	}
830	}	861	}
831		862
832	if(QUERY_FLAG(head,FLAG_CONFUSED))	863	if (QUERY_FLAG (head, FLAG_CONFUSED))
833	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	864	dir = absdir (dir + rndm (3) + rndm (3) - 2);
834		865
835	for (scroll=head->inv; scroll; scroll=scroll->below)	866	for (scroll = head->inv; scroll; scroll = scroll->below)
836	if (scroll->type == SCROLL && monster_should_cast_spell(head, scroll->inv)) break;	867	if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv))
		868	break;
837		869
838	/* Used up all his scrolls, so nothing do to */	870	/* Used up all his scrolls, so nothing do to */
839	if (!scroll) {	871	if (!scroll)
		872	{
840	CLEAR_FLAG(head, FLAG_READY_SCROLL);	873	CLEAR_FLAG (head, FLAG_READY_SCROLL);
841	return 0;	874	return 0;
842	}	875	}
843		876
844	/* Spell should be cast on caster (ie, heal, strength) */	877	/* Spell should be cast on caster (ie, heal, strength) */
845	if (scroll->inv->range==0)	878	if (scroll->inv->range == 0)
846	dir = 0;	879	dir = 0;
847		880
848	apply_scroll(part, scroll, dir);	881	apply_scroll (part, scroll, dir);
849	return 1;	882	return 1;
850	}	883	}
851		884
852	/* monster_use_skill()-implemented 95-04-28 to allow monster skill use.	885	/* monster_use_skill()-implemented 95-04-28 to allow monster skill use.
853	* Note that monsters do not need the skills SK_MELEE_WEAPON and	886	* Note that monsters do not need the skills SK_MELEE_WEAPON and
854	* SK_MISSILE_WEAPON to make those respective attacks, if we	887	* SK_MISSILE_WEAPON to make those respective attacks, if we
…		…
857	*	890	*
858	* The skills we are treating here are all but those. -b.t.	891	* The skills we are treating here are all but those. -b.t.
859	*	892	*
860	* At the moment this is only useful for throwing, perhaps for	893	* At the moment this is only useful for throwing, perhaps for
861	* stealing. TODO: This should be more integrated in the game. -MT, 25.11.01	894	* stealing. TODO: This should be more integrated in the game. -MT, 25.11.01
862	*/	895	*/
863		896	int
864	int monster_use_skill(object *head, object *part, object *pl,int dir) {	897	monster_use_skill (object *head, object *part, object *pl, int dir)
		898	{
865	object *skill, *owner;	899	object *skill, *owner;
866		900
867	if(!(dir=path_to_player(part,pl,0)))	901	if (!(dir = path_to_player (part, pl, 0)))
868	return 0;	902	return 0;
869		903
870	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {	904	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
		905	{
871	int dir2 = find_dir_2(head->x-owner->x, head->y-owner->y);	906	int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
		907
872	if(dirdiff(dir,dir2) < 1)	908	if (dirdiff (dir, dir2) < 1)
873	return 0; /* Might hit owner with skill -thrown rocks for example ?*/	909	return 0; /* Might hit owner with skill -thrown rocks for example ? */
874	}	910	}
		911
875	if(QUERY_FLAG(head,FLAG_CONFUSED))	912	if (QUERY_FLAG (head, FLAG_CONFUSED))
876	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	913	dir = absdir (dir + rndm (3) + rndm (3) - 2);
877		914
878	/* skill selection - monster will use the next unused skill.	915	/* skill selection - monster will use the next unused skill.
879	* well...the following scenario will allow the monster to	916	* well...the following scenario will allow the monster to
880	* toggle between 2 skills. One day it would be nice to make	917	* toggle between 2 skills. One day it would be nice to make
881	* more skills available to monsters.	918	* more skills available to monsters.
882	*/	919	*/
883
884	for(skill=head->inv;skill!=NULL;skill=skill->below)	920	for (skill = head->inv; skill; skill = skill->below)
885	if(skill->type==SKILL && skill!=head->chosen_skill) {	921	if (skill->type == SKILL && skill != head->chosen_skill)
		922	{
886	head->chosen_skill=skill;	923	head->chosen_skill = skill;
887	break;	924	break;
888	}	925	}
889		926
890	if(!skill && !head->chosen_skill) {	927	if (!skill && !head->chosen_skill)
		928	{
891	LOG(llevDebug,"Error: Monster %s (%d) has FLAG_READY_SKILL without skill.\n",	929	LOG (llevDebug, "Error: Monster %s (%d) has FLAG_READY_SKILL without skill.\n", &head->name, head->count);
892	head->name,head->count);
893	CLEAR_FLAG(head, FLAG_READY_SKILL);	930	CLEAR_FLAG (head, FLAG_READY_SKILL);
894	return 0;	931	return 0;
895	}	932	}
		933
896	/* use skill */	934	/* use skill */
897	return do_skill(head, part, head->chosen_skill,dir,NULL);	935	return do_skill (head, part, head->chosen_skill, dir, NULL);
898	}	936	}
899		937
900	/* Monster will use a ranged spell attack. */	938	/* Monster will use a ranged spell attack. */
901		939	int
902	int monster_use_range(object *head,object *part,object *pl,int dir)	940	monster_use_range (object *head, object *part, object *pl, int dir)
903	{	941	{
904	object *wand, *owner;	942	object *wand, *owner;
905	int at_least_one = 0;	943	int at_least_one = 0;
906		944
907	if(!(dir=path_to_player(part,pl,0)))	945	if (!(dir = path_to_player (part, pl, 0)))
908	return 0;	946	return 0;
909		947
910	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {	948	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
		949	{
911	int dir2 = find_dir_2(head->x-owner->x, head->y-owner->y);	950	int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
		951
912	if(dirdiff(dir,dir2) < 2)	952	if (dirdiff (dir, dir2) < 2)
913	return 0; /* Might hit owner with spell */	953	return 0; /* Might hit owner with spell */
914	}	954	}
		955
915	if(QUERY_FLAG(head,FLAG_CONFUSED))	956	if (QUERY_FLAG (head, FLAG_CONFUSED))
916	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	957	dir = absdir (dir + rndm (3) + rndm (3) - 2);
917		958
918	for(wand=head->inv;wand!=NULL;wand=wand->below)	959	for (wand = head->inv; wand; wand = wand->below)
919	{	960	{
920	if (wand->type == WAND)	961	if (wand->type == WAND)
		962	{
		963	/* Found a wand, let's see if it has charges left */
		964	at_least_one = 1;
		965	if (wand->stats.food <= 0)
		966	continue;
		967
		968	cast_spell (head, wand, dir, wand->inv, NULL);
		969
		970	if (!(--wand->stats.food))
921	{	971	{
922	/* Found a wand, let's see if it has charges left */	972	if (wand->arch)
923	at_least_one = 1;
924	if( wand->stats.food<=0 )
925	continue;
926
927	cast_spell( head, wand, dir, wand->inv, NULL );
928
929	if ( !( --wand->stats.food ) )
930	{	973	{
931	if ( wand->arch )
932	{
933	CLEAR_FLAG(wand, FLAG_ANIMATE);	974	CLEAR_FLAG (wand, FLAG_ANIMATE);
934	wand->face = wand->arch->clone.face;	975	wand->face = wand->arch->face;
935	wand->speed = 0;	976	wand->set_speed (0);
936	update_ob_speed(wand);
937	}
938	}	977	}
939	/* Success */
940	return 1;
941	}	978	}
		979	/* Success */
		980	return 1;
		981	}
942	else if ( wand->type == ROD || wand->type==HORN ) {	982	else if (wand->type == ROD || wand->type == HORN)
		983	{
943	/* Found rod/horn, let's use it if possible */	984	/* Found rod/horn, let's use it if possible */
944	at_least_one = 1;	985	at_least_one = 1;
945	if( wand->stats.hp < MAX( wand->inv->stats.sp, wand->inv->stats.grace ) )	986	if (wand->stats.hp < MAX (wand->inv->stats.sp, wand->inv->stats.grace))
946	continue;	987	continue;
947		988
948	/* drain charge before casting spell - can be a case where the	989	/* drain charge before casting spell - can be a case where the
949	* spell destroys the monster, and rod, so if done after, results	990	* spell destroys the monster, and rod, so if done after, results
950	* in crash.	991	* in crash.
951	*/	992	*/
952	drain_rod_charge( wand );	993	drain_rod_charge (wand);
953	cast_spell( head, wand, dir, wand->inv, NULL );	994	cast_spell (head, wand, dir, wand->inv, NULL);
954		995
955	/* Success */	996	/* Success */
956	return 1;	997	return 1;
957	}	998	}
958	}	999	}
959		1000
960	if ( at_least_one )	1001	if (at_least_one)
961	return 0;	1002	return 0;
962		1003
963	LOG(llevError,"Error: Monster %s (%d) HAS_READY_RANG() without wand/horn/rod.\n",	1004	LOG (llevError, "Error: Monster %s (%d) HAS_READY_RANGE() without wand/horn/rod.\n", &head->name, head->count);
964	head->name,head->count);
965	CLEAR_FLAG(head, FLAG_READY_RANGE);	1005	CLEAR_FLAG (head, FLAG_READY_RANGE);
966	return 0;	1006	return 0;
967	}	1007	}
968		1008
		1009	int
969	int monster_use_bow(object *head, object *part, object *pl, int dir) {	1010	monster_use_bow (object *head, object *part, object *pl, int dir)
		1011	{
970	object *owner;	1012	object *owner;
971		1013
972	if(!(dir=path_to_player(part,pl,0)))	1014	if (!(dir = path_to_player (part, pl, 0)))
973	return 0;	1015	return 0;
		1016
974	if(QUERY_FLAG(head,FLAG_CONFUSED))	1017	if (QUERY_FLAG (head, FLAG_CONFUSED))
975	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	1018	dir = absdir (dir + rndm (3) + rndm (3) - 2);
976		1019
977	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {	1020	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
		1021	{
978	int dir2 = find_dir_2(head->x-owner->x, head->y-owner->y);	1022	int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
		1023
979	if(dirdiff(dir,dir2) < 1)	1024	if (dirdiff (dir, dir2) < 1)
980	return 0; /* Might hit owner with arrow */	1025	return 0; /* Might hit owner with arrow */
981	}	1026	}
982		1027
983	/* in server/player.c */	1028	/* in server/player.c */
984	return fire_bow(head, part, NULL, dir, 0, part->x, part->y);	1029	return fire_bow (head, part, NULL, dir, 0, part->x, part->y);
985		1030
986	}	1031	}
987		1032
988	/* Checks if putting on 'item' will make 'who' do more	1033	/* Checks if putting on 'item' will make 'who' do more
989	* damage. This is a very simplistic check - also checking things	1034	* damage. This is a very simplistic check - also checking things
990	* like speed and ac are also relevant.	1035	* like speed and ac are also relevant.
991	*	1036	*
992	* return true if item is a better object.	1037	* return true if item is a better object.
993	*/	1038	*/
994		1039	int
995	int check_good_weapon(object *who, object *item) {	1040	check_good_weapon (object *who, object *item)
		1041	{
996	object *other_weap;	1042	object *other_weap;
997	int val=0, i;	1043	int val = 0, i;
998		1044
999	for(other_weap=who->inv;other_weap!=NULL;other_weap=other_weap->below)	1045	for (other_weap = who->inv; other_weap; other_weap = other_weap->below)
1000	if(other_weap->type==item->type&&QUERY_FLAG(other_weap,FLAG_APPLIED))	1046	if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED))
1001	break;	1047	break;
1002		1048
1003	if(other_weap==NULL) /* No other weapons */	1049	if (!other_weap) /* No other weapons */
1004	return 1;	1050	return 1;
1005		1051
1006	/* Rather than go through and apply the new one, and see if it is	1052	/* Rather than go through and apply the new one, and see if it is
1007	* better, just do some simple checks	1053	* better, just do some simple checks
1008	* Put some multipliers for things that hvae several effects,	1054	* Put some multipliers for things that hvae several effects,
1009	* eg, magic affects both damage and wc, so it has more weight	1055	* eg, magic affects both damage and wc, so it has more weight
1010	*/	1056	*/
1011		1057
1012	val = item->stats.dam - other_weap->stats.dam;	1058	val = item->stats.dam - other_weap->stats.dam;
1013	val += (item->magic - other_weap->magic) * 3;	1059	val += (item->magic - other_weap->magic) * 3;
1014	/* Monsters don't really get benefits from things like regen rates	1060	/* Monsters don't really get benefits from things like regen rates
1015	* from items. But the bonus for their stats are very important.	1061	* from items. But the bonus for their stats are very important.
1016	*/	1062	*/
1017	for (i=0; i<NUM_STATS; i++)	1063	for (i = 0; i < NUM_STATS; i++)
1018	val += (get_attr_value(&item->stats, i) - get_attr_value(&other_weap->stats, i))*2;	1064	val += item->stats.stat (i) - other_weap->stats.stat (i) * 2;
1019		1065
1020	if (val > 0) return 1;	1066	if (val > 0)
		1067	return 1;
		1068	else
1021	else return 0;	1069	return 0;
1022
1023	}	1070	}
1024		1071
		1072	int
1025	int check_good_armour(object *who, object *item) {	1073	check_good_armour (object *who, object *item)
		1074	{
1026	object *other_armour;	1075	object *other_armour;
1027	int val=0,i;	1076	int val = 0, i;
1028		1077
1029	for (other_armour = who->inv; other_armour != NULL;	1078	for (other_armour = who->inv; other_armour; other_armour = other_armour->below)
1030	other_armour = other_armour->below)
1031	if (other_armour->type == item->type && QUERY_FLAG(other_armour,FLAG_APPLIED))	1079	if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED))
1032	break;	1080	break;
1033		1081
1034	if (other_armour == NULL) /* No other armour, use the new */	1082	if (other_armour == NULL) /* No other armour, use the new */
1035	return 1;	1083	return 1;
1036		1084
1037	/* Like above function , see which is better */	1085	/* Like above function , see which is better */
1038	val = item->stats.ac - other_armour->stats.ac;	1086	val = item->stats.ac - other_armour->stats.ac;
1039	val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL])/5;	1087	val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL]) / 5;
1040	val += (item->magic - other_armour->magic) * 3;	1088	val += (item->magic - other_armour->magic) * 3;
1041		1089
1042	/* for the other protections, do weigh them very much in the equation -	1090	/* for the other protections, do weigh them very much in the equation -
1043	* it is the armor protection which is most important, because there is	1091	* it is the armor protection which is most important, because there is
1044	* no good way to know what the player may attack the monster with.	1092	* no good way to know what the player may attack the monster with.
1045	* So if the new item has better protection than the old, give that higher	1093	* So if the new item has better protection than the old, give that higher
1046	* value. If the reverse, then decrease the value of this item some.	1094	* value. If the reverse, then decrease the value of this item some.
1047	*/	1095	*/
1048	for (i=1; i <NROFATTACKS; i++) {	1096	for (i = 1; i < NROFATTACKS; i++)
		1097	{
1049	if (item->resist[i] > other_armour->resist[i]) val++;	1098	if (item->resist[i] > other_armour->resist[i])
		1099	val++;
1050	else if (item->resist[i] < other_armour->resist[i]) val--;	1100	else if (item->resist[i] < other_armour->resist[i])
		1101	val--;
1051	}	1102	}
1052		1103
1053	/* Very few armours have stats, so not much need to worry about those. */	1104	/* Very few armours have stats, so not much need to worry about those. */
1054		1105
1055	if (val > 0) return 1;	1106	if (val > 0)
		1107	return 1;
		1108	else
1056	else return 0;	1109	return 0;
1057
1058	}	1110	}
1059		1111
1060	/*	1112	/*
1061	* monster_check_pickup(): checks for items that monster can pick up.	1113	* monster_check_pickup(): checks for items that monster can pick up.
1062	*	1114	*
…		…
1070	* This function was seen be continueing looping at one point (tmp->below	1122	* This function was seen be continueing looping at one point (tmp->below
1071	* became a recursive loop. It may be better to call monster_check_apply	1123	* became a recursive loop. It may be better to call monster_check_apply
1072	* after we pick everything up, since that function may call others which	1124	* after we pick everything up, since that function may call others which
1073	* affect stacking on this space.	1125	* affect stacking on this space.
1074	*/	1126	*/
1075		1127	void
1076	void monster_check_pickup(object *monster) {	1128	monster_check_pickup (object *monster)
		1129	{
1077	object *tmp,*next;	1130	object *tmp, *next;
1078	int next_tag;
1079		1131
1080	for(tmp=monster->below;tmp!=NULL;tmp=next) {	1132	for (tmp = monster->below; tmp != NULL; tmp = next)
		1133	{
1081	next=tmp->below;	1134	next = tmp->below;
1082	next_tag = next ? next->count : 0;
1083	if (monster_can_pick(monster,tmp)) {	1135	if (monster_can_pick (monster, tmp))
1084	remove_ob(tmp);	1136	{
		1137	tmp->remove ();
1085	tmp = insert_ob_in_ob(tmp,monster);	1138	tmp = insert_ob_in_ob (tmp, monster);
1086	(void) monster_check_apply(monster,tmp);	1139	(void) monster_check_apply (monster, tmp);
1087	}	1140	}
1088	/* We could try to re-establish the cycling, of the space, but probably	1141	/* We could try to re-establish the cycling, of the space, but probably
1089	* not a big deal to just bail out.	1142	* not a big deal to just bail out.
1090	*/	1143	*/
1091	if (next && was_destroyed(next, next_tag)) return;	1144	if (next && next->destroyed ())
		1145	return;
1092	}	1146	}
1093	}	1147	}
1094		1148
1095	/*	1149	/*
1096	* monster_can_pick(): If the monster is interested in picking up	1150	* monster_can_pick(): If the monster is interested in picking up
1097	* the item, then return 0. Otherwise 0.	1151	* the item, then return 0. Otherwise 0.
1098	* Instead of pick_up, flags for "greed", etc, should be used.	1152	* Instead of pick_up, flags for "greed", etc, should be used.
1099	* I've already utilized flags for bows, wands, rings, etc, etc. -Frank.	1153	* I've already utilized flags for bows, wands, rings, etc, etc. -Frank.
1100	*/	1154	*/
1101		1155	int
1102	int monster_can_pick(object *monster, object *item) {	1156	monster_can_pick (object *monster, object *item)
		1157	{
1103	int flag=0;	1158	int flag = 0;
1104	int i;	1159	int i;
1105		1160
1106	if(!can_pick(monster,item))	1161	if (!can_pick (monster, item))
1107	return 0;	1162	return 0;
1108		1163
1109	if(QUERY_FLAG(item,FLAG_UNPAID))	1164	if (QUERY_FLAG (item, FLAG_UNPAID))
1110	return 0;	1165	return 0;
1111		1166
1112	if (monster->pick_up&64) /* All */	1167	if (monster->pick_up & 64) /* All */
1113	flag=1;	1168	flag = 1;
1114		1169
		1170	else
1115	else switch(item->type) {	1171	switch (item->type)
1116	case MONEY:	1172	{
1117	case GEM:	1173	case MONEY:
		1174	case GEM:
1118	flag=monster->pick_up&2;	1175	flag = monster->pick_up & 2;
1119	break;	1176	break;
1120		1177
1121	case FOOD:	1178	case FOOD:
1122	flag=monster->pick_up&4;	1179	flag = monster->pick_up & 4;
1123	break;	1180	break;
1124		1181
1125	case WEAPON:	1182	case WEAPON:
1126	flag=(monster->pick_up&8)||QUERY_FLAG(monster,FLAG_USE_WEAPON);	1183	flag = (monster->pick_up & 8) || QUERY_FLAG (monster, FLAG_USE_WEAPON);
1127	break;	1184	break;
1128		1185
1129	case ARMOUR:	1186	case ARMOUR:
1130	case SHIELD:	1187	case SHIELD:
1131	case HELMET:	1188	case HELMET:
1132	case BOOTS:	1189	case BOOTS:
1133	case GLOVES:	1190	case GLOVES:
1134	case GIRDLE:	1191	case GIRDLE:
1135	flag=(monster->pick_up&16)||QUERY_FLAG(monster,FLAG_USE_ARMOUR);	1192	flag = (monster->pick_up & 16) || QUERY_FLAG (monster, FLAG_USE_ARMOUR);
1136	break;	1193	break;
1137		1194
1138	case SKILL:	1195	case SKILL:
1139	flag=QUERY_FLAG(monster,FLAG_CAN_USE_SKILL);	1196	flag = QUERY_FLAG (monster, FLAG_CAN_USE_SKILL);
1140	break;	1197	break;
1141		1198
1142	case RING:	1199	case RING:
1143	flag=QUERY_FLAG(monster,FLAG_USE_RING);	1200	flag = QUERY_FLAG (monster, FLAG_USE_RING);
1144	break;	1201	break;
1145		1202
1146	case WAND:	1203	case WAND:
1147	case HORN:	1204	case HORN:
1148	case ROD:	1205	case ROD:
1149	flag=QUERY_FLAG(monster,FLAG_USE_RANGE);	1206	flag = QUERY_FLAG (monster, FLAG_USE_RANGE);
1150	break;	1207	break;
1151		1208
1152	case SPELLBOOK:	1209	case SPELLBOOK:
1153	flag=(monster->arch!=NULL&&QUERY_FLAG((&monster->arch->clone),FLAG_CAST_SPELL));	1210	flag = monster->arch && QUERY_FLAG (monster->arch, FLAG_CAST_SPELL);
1154	break;	1211	break;
1155		1212
1156	case SCROLL:	1213	case SCROLL:
1157	flag = QUERY_FLAG(monster,FLAG_USE_SCROLL);	1214	flag = QUERY_FLAG (monster, FLAG_USE_SCROLL);
1158	break;	1215	break;
1159		1216
1160	case BOW:	1217	case BOW:
1161	case ARROW:	1218	case ARROW:
1162	flag=QUERY_FLAG(monster,FLAG_USE_BOW);	1219	flag = QUERY_FLAG (monster, FLAG_USE_BOW);
1163	break;	1220	break;
1164	}	1221	}
		1222
1165	/* Simplistic check - if the monster has a location to equip it, he will	1223	/* Simplistic check - if the monster has a location to equip it, he will
1166	* pick it up. Note that this doesn't handle cases where an item may	1224	* pick it up. Note that this doesn't handle cases where an item may
1167	* use several locations.	1225	* use several locations.
1168	*/	1226	*/
1169	for (i=0; i < NUM_BODY_LOCATIONS; i++) {	1227	for (i = 0; i < NUM_BODY_LOCATIONS; i++)
1170	if (monster->body_info[i] && item->body_info[i]) {
1171	flag=1;
1172	break;
1173	}
1174	}	1228	{
		1229	if (monster->slot[i].info && item->slot[i].info)
		1230	{
		1231	flag = 1;
		1232	break;
		1233	}
		1234	}
1175		1235
1176	if (((!(monster->pick_up&32))&&flag) || ((monster->pick_up&32)&&(!flag)))	1236	if (((!(monster->pick_up & 32)) && flag) || ((monster->pick_up & 32) && (!flag)))
1177	return 1;
1178	return 0;	1237	return 1;
		1238	return 0;
1179	}	1239	}
1180		1240
1181	/*	1241	/*
1182	* monster_apply_below():	1242	* monster_apply_below():
1183	* Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's	1243	* Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's
1184	* eager to apply things, encounters something apply-able,	1244	* eager to apply things, encounters something apply-able,
1185	* then make him apply it	1245	* then make him apply it
1186	*/	1246	*/
1187		1247	void
1188	void monster_apply_below(object *monster) {	1248	monster_apply_below (object *monster)
		1249	{
1189	object *tmp, *next;	1250	object *tmp, *next;
1190		1251
1191	for(tmp=monster->below;tmp!=NULL;tmp=next) {	1252	for (tmp = monster->below; tmp != NULL; tmp = next)
		1253	{
1192	next=tmp->below;	1254	next = tmp->below;
1193	switch (tmp->type) {	1255	switch (tmp->type)
		1256	{
1194	case CF_HANDLE:	1257	case CF_HANDLE:
1195	case TRIGGER:	1258	case TRIGGER:
1196	if (monster->will_apply&1)	1259	if (monster->will_apply & 1)
1197	manual_apply(monster,tmp,0);	1260	manual_apply (monster, tmp, 0);
1198	break;	1261	break;
1199		1262
1200	case TREASURE:	1263	case TREASURE:
1201	if (monster->will_apply&2)	1264	if (monster->will_apply & 2)
1202	manual_apply(monster,tmp,0);	1265	manual_apply (monster, tmp, 0);
1203	break;	1266	break;
1204		1267
1205	}	1268	}
1206	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1269	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1207	break;	1270	break;
1208	}	1271	}
1209	}	1272	}
1210		1273
1211	/*	1274	/*
1212	* monster_check_apply() is meant to be called after an item is	1275	* monster_check_apply() is meant to be called after an item is
…		…
1215	* a pointer to that object is returned, so it can be dropped.	1278	* a pointer to that object is returned, so it can be dropped.
1216	* (so that other monsters can pick it up and use it)	1279	* (so that other monsters can pick it up and use it)
1217	* Note that as things are now, monsters never drop something -	1280	* Note that as things are now, monsters never drop something -
1218	* they can pick up all that they can use.	1281	* they can pick up all that they can use.
1219	*/	1282	*/
1220
1221	/* Sept 96, fixed this so skills will be readied -b.t.*/	1283	/* Sept 96, fixed this so skills will be readied -b.t.*/
1222		1284	void
1223	void monster_check_apply(object *mon, object *item) {	1285	monster_check_apply (object *mon, object *item)
1224		1286	{
1225	int flag = 0;	1287	int flag = 0;
1226		1288
1227	if(item->type==SPELLBOOK&&	1289	if (item->type == SPELLBOOK && mon->arch && (QUERY_FLAG (mon->arch, FLAG_CAST_SPELL)))
1228	mon->arch!=NULL&&(QUERY_FLAG((&mon->arch->clone),FLAG_CAST_SPELL))) {	1290	{
1229	SET_FLAG(mon, FLAG_CAST_SPELL);	1291	SET_FLAG (mon, FLAG_CAST_SPELL);
1230	return;	1292	return;
1231	}	1293	}
1232		1294
1233	/* If for some reason, this item is already applied, no more work to do */	1295	/* If for some reason, this item is already applied, no more work to do */
1234	if(QUERY_FLAG(item,FLAG_APPLIED)) return;	1296	if (QUERY_FLAG (item, FLAG_APPLIED))
1235
1236	/* Might be better not to do this - if the monster can fire a bow,
1237	* it is possible in his wanderings, he will find one to use. In
1238	* which case, it would be nice to have ammo for it.
1239	*/
1240	if(QUERY_FLAG(mon,FLAG_USE_BOW) && item->type==ARROW) {
1241	/* Check for the right kind of bow */
1242	object *bow;
1243	for(bow=mon->inv;bow!=NULL;bow=bow->below)
1244	if(bow->type==BOW && bow->race==item->race) {
1245	SET_FLAG(mon, FLAG_READY_BOW);
1246	LOG(llevMonster,"Found correct bow for arrows.\n");
1247	return; /* nothing more to do for arrows */
1248	}
1249	}
1250
1251	if (item->type == TREASURE && mon->will_apply & WILL_APPLY_TREASURE) flag=1;
1252	/* Eating food gets hp back */
1253	else if (item->type == FOOD && mon->will_apply & WILL_APPLY_FOOD) flag=1;
1254	else if (item->type == SCROLL && QUERY_FLAG(mon, FLAG_USE_SCROLL)) {
1255	if (!item->inv)
1256	LOG(llevDebug,"Monster %d having scroll %d with empty inventory!", mon->count, item->count);
1257	else if (monster_should_cast_spell(mon, item->inv))
1258	SET_FLAG(mon, FLAG_READY_SCROLL);
1259	/* Don't use it right now */
1260	return;
1261	}
1262	else if (item->type == WEAPON) flag = check_good_weapon(mon,item);
1263	else if (IS_ARMOR(item)) flag = check_good_armour(mon,item);
1264	/* Should do something more, like make sure this is a better item */
1265	else if (item->type == RING)
1266	flag=1;
1267	else if ( item->type==WAND || item->type == ROD || item->type==HORN )
1268	{
1269	/* We never really 'ready' the wand/rod/horn, because that would mean the
1270	* weapon would get undone.
1271	*/
1272	if (!(can_apply_object(mon, item) & CAN_APPLY_NOT_MASK))
1273	{
1274	SET_FLAG(mon, FLAG_READY_RANGE);
1275	SET_FLAG(item, FLAG_APPLIED);
1276	}
1277	return;
1278	}
1279	else if (item->type == BOW) {
1280	/* We never really 'ready' the bow, because that would mean the
1281	* weapon would get undone.
1282	*/
1283	if (!(can_apply_object(mon, item) & CAN_APPLY_NOT_MASK))
1284	SET_FLAG(mon, FLAG_READY_BOW);
1285	return;
1286	}
1287	else if ( item->type == SKILL )
1288	{
1289	/*
1290	* skills are specials: monsters must have the 'FLAG_READY_SKILL' flag set,
1291	* else they can't use the skill...
1292	* Skills also don't need to get applied, so return now.
1293	*/
1294	SET_FLAG(mon, FLAG_READY_SKILL);
1295	return;
1296	}
1297
1298
1299	/* if we don't match one of the above types, return now.
1300	* can_apply_object will say that we can apply things like flesh,
1301	* bolts, and whatever else, because it only checks against the
1302	* body_info locations.
1303	*/
1304	if (!flag) return;
1305
1306	/* Check to see if the monster can use this item. If not, no need
1307	* to do further processing. Note that can_apply_object already checks
1308	* for the CAN_USE flags.
1309	*/
1310	if (can_apply_object(mon, item) & CAN_APPLY_NOT_MASK) return;
1311
1312	/* should only be applying this item, not unapplying it.
1313	* also, ignore status of curse so they can take off old armour.
1314	* monsters have some advantages after all.
1315	*/
1316	manual_apply(mon, item, AP_APPLY | AP_IGNORE_CURSE);
1317
1318	return;	1297	return;
1319	}
1320		1298
		1299	/* Might be better not to do this - if the monster can fire a bow,
		1300	* it is possible in his wanderings, he will find one to use. In
		1301	* which case, it would be nice to have ammo for it.
		1302	*/
		1303	if (QUERY_FLAG (mon, FLAG_USE_BOW) && item->type == ARROW)
		1304	{
		1305	/* Check for the right kind of bow */
		1306	object *bow;
		1307
		1308	for (bow = mon->inv; bow; bow = bow->below)
		1309	if (bow->type == BOW && bow->race == item->race)
		1310	{
		1311	SET_FLAG (mon, FLAG_READY_BOW);
		1312	LOG (llevMonster, "Found correct bow for arrows.\n");
		1313	return; /* nothing more to do for arrows */
		1314	}
		1315	}
		1316
		1317	if (item->type == TREASURE && mon->will_apply & WILL_APPLY_TREASURE)
		1318	flag = 1;
		1319	/* Eating food gets hp back */
		1320	else if (item->type == FOOD && mon->will_apply & WILL_APPLY_FOOD)
		1321	flag = 1;
		1322	else if (item->type == SCROLL && QUERY_FLAG (mon, FLAG_USE_SCROLL))
		1323	{
		1324	if (!item->inv)
		1325	LOG (llevDebug, "Monster %d having scroll %d with empty inventory!", mon->count, item->count);
		1326	else if (monster_should_cast_spell (mon, item->inv))
		1327	SET_FLAG (mon, FLAG_READY_SCROLL);
		1328	/* Don't use it right now */
		1329	return;
		1330	}
		1331	else if (item->type == WEAPON)
		1332	flag = check_good_weapon (mon, item);
		1333	else if (item->is_armor ())
		1334	flag = check_good_armour (mon, item);
		1335	/* Should do something more, like make sure this is a better item */
		1336	else if (item->type == RING)
		1337	flag = 1;
		1338	else if (item->type == WAND || item->type == ROD || item->type == HORN)
		1339	{
		1340	/* We never really 'ready' the wand/rod/horn, because that would mean the
		1341	* weapon would get undone.
		1342	*/
		1343	if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
		1344	{
		1345	SET_FLAG (mon, FLAG_READY_RANGE);
		1346	SET_FLAG (item, FLAG_APPLIED);
		1347	}
		1348	return;
		1349	}
		1350	else if (item->type == BOW)
		1351	{
		1352	/* We never really 'ready' the bow, because that would mean the
		1353	* weapon would get undone.
		1354	*/
		1355	if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
		1356	SET_FLAG (mon, FLAG_READY_BOW);
		1357	return;
		1358	}
		1359	else if (item->type == SKILL)
		1360	{
		1361	/*
		1362	* skills are specials: monsters must have the 'FLAG_READY_SKILL' flag set,
		1363	* else they can't use the skill...
		1364	* Skills also don't need to get applied, so return now.
		1365	*/
		1366	SET_FLAG (mon, FLAG_READY_SKILL);
		1367	return;
		1368	}
		1369
		1370	/* if we don't match one of the above types, return now.
		1371	* can_apply_object will say that we can apply things like flesh,
		1372	* bolts, and whatever else, because it only checks against the
		1373	* body_info locations.
		1374	*/
		1375	if (!flag)
		1376	return;
		1377
		1378	/* Check to see if the monster can use this item. If not, no need
		1379	* to do further processing. Note that can_apply_object already checks
		1380	* for the CAN_USE flags.
		1381	*/
		1382	if (can_apply_object (mon, item) & CAN_APPLY_NOT_MASK)
		1383	return;
		1384
		1385	/* should only be applying this item, not unapplying it.
		1386	* also, ignore status of curse so they can take off old armour.
		1387	* monsters have some advantages after all.
		1388	*/
		1389	manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE);
		1390	}
		1391
		1392	void
1321	void npc_call_help(object *op) {	1393	npc_call_help (object *op)
		1394	{
1322	int x,y, mflags;	1395	int x, y, mflags;
1323	object *npc;	1396	object *npc;
1324	sint16 sx, sy;	1397	sint16 sx, sy;
1325	mapstruct *m;	1398	maptile *m;
1326		1399
1327	for(x = -3; x < 4; x++)	1400	for (x = -3; x < 4; x++)
1328	for(y = -3; y < 4; y++) {	1401	for (y = -3; y < 4; y++)
		1402	{
1329	m = op->map;	1403	m = op->map;
1330	sx = op->x + x;	1404	sx = op->x + x;
1331	sy = op->y + y;	1405	sy = op->y + y;
1332	mflags = get_map_flags(m, &m, sx, sy, &sx, &sy);	1406	mflags = get_map_flags (m, &m, sx, sy, &sx, &sy);
1333	/* If nothing alive on this space, no need to search the space. */	1407	/* If nothing alive on this space, no need to search the space. */
1334	if ((mflags & P_OUT_OF_MAP) || !(mflags & P_IS_ALIVE))	1408	if ((mflags & P_OUT_OF_MAP) || !(mflags & P_IS_ALIVE))
1335	continue;	1409	continue;
1336		1410
1337	for(npc = get_map_ob(m,sx,sy);npc!=NULL;npc=npc->above)	1411	for (npc = GET_MAP_OB (m, sx, sy); npc != NULL; npc = npc->above)
1338	if(QUERY_FLAG(npc, FLAG_ALIVE)&&QUERY_FLAG(npc, FLAG_UNAGGRESSIVE))	1412	if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1339	npc->enemy = op->enemy;	1413	npc->enemy = op->enemy;
1340	}	1414	}
1341	}	1415	}
1342		1416
1343		1417	int
1344	int dist_att (int dir , object *ob, object *enemy, object *part, rv_vector *rv) {	1418	dist_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1345		1419	{
1346	if (can_hit(part,enemy,rv))	1420	if (can_hit (part, enemy, rv))
1347	return dir;	1421	return dir;
1348	if (rv->distance < 10)	1422	if (rv->distance < 10)
1349	return absdir(dir+4);	1423	return absdir (dir + 4);
1350	else if (rv->distance>18)	1424	else if (rv->distance > 18)
1351	return dir;	1425	return dir;
		1426
1352	return 0;	1427	return 0;
1353	}	1428	}
1354		1429
		1430	int
1355	int run_att (int dir, object *ob, object *enemy,object *part, rv_vector *rv) {	1431	run_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1356		1432	{
1357	if ((can_hit (part,enemy,rv) && ob->move_status <20) || ob->move_status <20) {	1433	if ((can_hit (part, enemy, rv) && ob->move_status < 20) || ob->move_status < 20)
		1434	{
1358	ob->move_status++;	1435	ob->move_status++;
1359	return (dir);	1436	return (dir);
1360	}	1437	}
1361	else if (ob->move_status >20)	1438	else if (ob->move_status > 20)
1362	ob->move_status = 0;
1363	return absdir (dir+4);
1364	}
1365
1366	int hitrun_att (int dir, object *ob,object *enemy) {
1367	if (ob->move_status ++ < 25)
1368	return dir;
1369	else if (ob->move_status <50)
1370	return absdir (dir+4);
1371	else
1372	ob->move_status = 0;
1373	return absdir(dir+4);
1374	}
1375
1376	int wait_att (int dir, object *ob,object *enemy,object *part,rv_vector *rv) {
1377
1378	int inrange = can_hit (part, enemy,rv);
1379
1380	if (ob->move_status || inrange)
1381	ob->move_status++;
1382
1383	if (ob->move_status == 0)
1384	return 0;
1385	else if (ob->move_status <10)
1386	return dir;
1387	else if (ob->move_status <15)
1388	return absdir(dir+4);
1389	ob->move_status = 0;	1439	ob->move_status = 0;
1390	return 0;
1391	}
1392		1440
1393	int disthit_att (int dir, object *ob, object *enemy, object *part,rv_vector *rv) {
1394
1395	/* The logic below here looked plain wrong before. Basically, what should
1396	* happen is that if the creatures hp percentage falls below run_away,
1397	* the creature should run away (dir+4)
1398	* I think its wrong for a creature to have a zero maxhp value, but
1399	* at least one map has this set, and whatever the map contains, the
1400	* server should try to be resilant enough to avoid the problem
1401	*/
1402	if (ob->stats.maxhp && (ob->stats.hp*100)/ob->stats.maxhp < ob->run_away)
1403	return absdir(dir+4);
1404	return dist_att (dir,ob,enemy,part,rv);
1405	}
1406
1407	int wait_att2 (int dir, object *ob,object *enemy,object *part, rv_vector *rv) {
1408	if (rv->distance < 9)
1409	return absdir (dir+4);	1441	return absdir (dir + 4);
		1442	}
		1443
		1444	int
		1445	hitrun_att (int dir, object *ob, object *enemy)
		1446	{
		1447	if (ob->move_status++ < 25)
1410	return 0;	1448	return dir;
1411	}	1449	else if (ob->move_status < 50)
1412		1450	return absdir (dir + 4);
1413	void circ1_move (object *ob) {	1451	else
1414	static int circle [12] = {3,3,4,5,5,6,7,7,8,1,1,2};
1415	if(++ob->move_status > 11)
1416	ob->move_status = 0;	1452	ob->move_status = 0;
1417	if (!(move_object(ob,circle[ob->move_status])))
1418	(void) move_object(ob,RANDOM()%8+1);
1419	}
1420		1453
		1454	return absdir (dir + 4);
		1455	}
		1456
		1457	int
		1458	wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
		1459	{
		1460
		1461	int inrange = can_hit (part, enemy, rv);
		1462
		1463	if (ob->move_status || inrange)
		1464	ob->move_status++;
		1465
		1466	if (ob->move_status == 0)
		1467	return 0;
		1468	else if (ob->move_status < 10)
		1469	return dir;
		1470	else if (ob->move_status < 15)
		1471	return absdir (dir + 4);
		1472
		1473	ob->move_status = 0;
		1474	return 0;
		1475	}
		1476
		1477	int
		1478	disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
		1479	{
		1480
		1481	/* The logic below here looked plain wrong before. Basically, what should
		1482	* happen is that if the creatures hp percentage falls below run_away,
		1483	* the creature should run away (dir+4)
		1484	* I think its wrong for a creature to have a zero maxhp value, but
		1485	* at least one map has this set, and whatever the map contains, the
		1486	* server should try to be resilant enough to avoid the problem
		1487	*/
		1488	if (ob->stats.maxhp && (ob->stats.hp * 100) / ob->stats.maxhp < ob->run_away)
		1489	return absdir (dir + 4);
		1490
		1491	return dist_att (dir, ob, enemy, part, rv);
		1492	}
		1493
		1494	int
		1495	wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
		1496	{
		1497	if (rv->distance < 9)
		1498	return absdir (dir + 4);
		1499
		1500	return 0;
		1501	}
		1502
		1503	void
1421	void circ2_move (object *ob) {	1504	circ1_move (object *ob)
		1505	{
1422	static int circle[20] = {3,3,3,4,4,5,5,5,6,6,7,7,7,8,8,1,1,1,2,2};	1506	static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 };
		1507
1423	if(++ob->move_status > 19)	1508	if (++ob->move_status > 11)
1424	ob->move_status = 0;	1509	ob->move_status = 0;
		1510
1425	if(!(move_object(ob,circle[ob->move_status])))	1511	if (!(move_object (ob, circle[ob->move_status])))
1426	(void) move_object(ob,RANDOM()%8+1);	1512	move_object (ob, rndm (8) + 1);
1427	}	1513	}
1428		1514
		1515	void
		1516	circ2_move (object *ob)
		1517	{
		1518	static int circle[20] = { 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 1, 1, 1, 2, 2 };
		1519
		1520	if (++ob->move_status > 19)
		1521	ob->move_status = 0;
		1522
		1523	if (!(move_object (ob, circle[ob->move_status])))
		1524	move_object (ob, rndm (8) + 1);
		1525	}
		1526
		1527	void
1429	void pace_movev(object *ob) {	1528	pace_movev (object *ob)
		1529	{
1430	if (ob->move_status++ > 6)	1530	if (ob->move_status++ > 6)
1431	ob->move_status = 0;	1531	ob->move_status = 0;
		1532
1432	if (ob->move_status < 4)	1533	if (ob->move_status < 4)
1433	(void) move_object (ob,5);	1534	move_object (ob, 5);
1434	else	1535	else
1435	(void) move_object(ob,1);	1536	move_object (ob, 1);
1436	}	1537	}
1437		1538
		1539	void
1438	void pace_moveh (object *ob) {	1540	pace_moveh (object *ob)
		1541	{
1439	if (ob->move_status++ > 6)	1542	if (ob->move_status++ > 6)
1440	ob->move_status = 0;	1543	ob->move_status = 0;
		1544
1441	if (ob->move_status < 4)	1545	if (ob->move_status < 4)
1442	(void) move_object(ob,3);	1546	move_object (ob, 3);
1443	else	1547	else
1444	(void) move_object(ob,7);	1548	move_object (ob, 7);
1445	}	1549	}
1446		1550
		1551	void
1447	void pace2_movev (object *ob) {	1552	pace2_movev (object *ob)
		1553	{
1448	if (ob->move_status ++ > 16)	1554	if (ob->move_status++ > 16)
1449	ob->move_status = 0;	1555	ob->move_status = 0;
		1556
1450	if (ob->move_status <6)	1557	if (ob->move_status < 6)
1451	(void) move_object (ob,5);	1558	move_object (ob, 5);
1452	else if (ob->move_status < 8)	1559	else if (ob->move_status < 8)
1453	return;	1560	return;
1454	else if (ob->move_status <13)	1561	else if (ob->move_status < 13)
1455	(void) move_object (ob,1);	1562	move_object (ob, 1);
		1563	else
1456	else return;	1564	return;
1457	}	1565	}
1458		1566
		1567	void
1459	void pace2_moveh (object *ob) {	1568	pace2_moveh (object *ob)
		1569	{
1460	if (ob->move_status ++ > 16)	1570	if (ob->move_status++ > 16)
1461	ob->move_status = 0;	1571	ob->move_status = 0;
		1572
1462	if (ob->move_status <6)	1573	if (ob->move_status < 6)
1463	(void) move_object (ob,3);	1574	move_object (ob, 3);
1464	else if (ob->move_status < 8)	1575	else if (ob->move_status < 8)
1465	return;	1576	return;
1466	else if (ob->move_status <13)	1577	else if (ob->move_status < 13)
1467	(void) move_object (ob,7);	1578	move_object (ob, 7);
		1579	else
1468	else return;	1580	return;
1469	}	1581	}
1470		1582
		1583	void
1471	void rand_move (object *ob) {	1584	rand_move (object *ob)
		1585	{
1472	int i;	1586	int i;
1473	if (ob->move_status <1 || ob->move_status >8 ||	1587
1474	!(move_object(ob,ob->move_status|| ! (RANDOM()% 9))))	1588	if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(rndm (9)))))
1475	for (i = 0; i < 5; i++)	1589	for (i = 0; i < 5; i++)
1476	if (move_object(ob,ob->move_status = RANDOM()%8+1))	1590	if (move_object (ob, ob->move_status = rndm (8) + 1))
1477	return;	1591	return;
1478	}	1592	}
1479		1593
		1594	void
1480	void check_earthwalls(object *op, mapstruct *m, int x, int y) {	1595	check_earthwalls (object *op, maptile *m, int x, int y)
		1596	{
1481	object *tmp;	1597	object *tmp;
		1598
1482	for (tmp = get_map_ob(m, x, y); tmp!=NULL; tmp=tmp->above) {	1599	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
		1600	{
1483	if (tmp->type == EARTHWALL) {	1601	if (tmp->type == EARTHWALL)
		1602	{
1484	hit_player(tmp,op->stats.dam,op,AT_PHYSICAL,1);	1603	hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1);
1485	return;	1604	return;
1486	}	1605	}
1487	}	1606	}
1488	}	1607	}
1489		1608
		1609	void
1490	void check_doors(object *op, mapstruct *m, int x, int y) {	1610	check_doors (object *op, maptile *m, int x, int y)
		1611	{
1491	object *tmp;	1612	object *tmp;
		1613
1492	for (tmp = get_map_ob(m, x, y); tmp!=NULL; tmp=tmp->above) {	1614	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
		1615	{
1493	if (tmp->type == DOOR) {	1616	if (tmp->type == DOOR)
		1617	{
1494	hit_player(tmp,1000,op,AT_PHYSICAL,1);	1618	hit_player (tmp, 1000, op, AT_PHYSICAL, 1);
1495	return;	1619	return;
1496	}	1620	}
1497	}
1498	}
1499
1500	/* This replaces all the msglang stuff about which seems to be a lot of
1501	* unneeded complication - since the setup of that data is never re-used
1502	* (say 'hi' to monster, then 'yes', it would re-do the entire parse-message)
1503	* it seems to me to make more sense to just have simple function that returns
1504	* the 'text' portion of the message that it matches - this savees us a bunch
1505	* of malloc's and free's, as well as that setup.
1506	* This function takes the message to be parsed in 'msg', the text to
1507	* match in 'match', and returns the portion of the message. This
1508	* returned portion is in a malloc'd buf that should be freed.
1509	* Returns NULL if no match is found.
1510	* The player is passed too, so that quest-related messages can be checked too.
1511	*/
1512	static char *find_matching_message(object* pl, const char *msg, const char *match)
1513	{
1514	const char *cp=msg, *cp1, *cp2;
1515	char *cp3, regex[MAX_BUF], gotmatch=0;
1516
1517	while (1) {
1518	if (strncmp(cp, "@match ", 7)) {
1519	LOG(llevDebug,"find_matching_message: Invalid message %s", msg);
1520	return NULL;
1521	}
1522	else {
1523	/* Find the end of the line, and copy the regex portion into it */
1524	cp2 = strchr(cp+7, '\n');
1525	strncpy(regex, cp+7, (cp2 - cp -7 ));
1526	regex[cp2 - cp -7] = 0;
1527
1528	/* Find the next match command */
1529	cp1 = strstr(cp+6, "\n@match");
1530
1531	/* Got a match - handle * as special case - proper regex would be .*,
1532	* but lots of messages don't use that form.
1533	*/
1534	if (regex[0] == '*') gotmatch=1;
1535	else {
1536	char *pipe, *pnext=NULL;
1537	/* need to parse all the | seperators. Our re_cmp isn't
1538	* realy a fully blown regex parser.
1539	*/
1540	for (pipe=regex; pipe != NULL; pipe = pnext) {
1541	pnext = strchr(pipe, '|');
1542	if (pnext) {
1543	*pnext = 0;
1544	pnext ++;
1545	}
1546	if (re_cmp(match, pipe)) {
1547	gotmatch = 1;
1548	break;
1549	}
1550	}
1551	}	1621	}
1552	if (gotmatch) {
1553	if (cp1) {
1554	cp3 = (char*) malloc(cp1 - cp2 + 1);
1555	strncpy(cp3, cp2+1, cp1 - cp2);
1556	cp3[cp1 - cp2] = 0;
1557	}
1558	else { /* if no next match, just want the rest of the string */
1559	cp3 = strdup_local(cp2+1);
1560	}
1561	return cp3;
1562	}
1563	gotmatch = 0;
1564	if (cp1) cp = cp1 + 1;
1565	else return NULL;
1566	}
1567	}
1568	/* Should never get reached */
1569	}
1570
1571	/* This function looks for an object or creature that is listening.
1572	* I've disabled the bit that has only the first npc monster listen -
1573	* we'll see how this works out. only the first npc listens, which
1574	* is sort of bogus since it uses the free_arr which has a preference
1575	* to certain directions.
1576	*
1577	* There is a rare even that the orig_map is used for - basically, if
1578	* a player says the magic word that gets him teleported off the map,
1579	* it can result in the new map putting the object count too high,
1580	* which forces the swap out of some other map. In some cases, the
1581	* map the player was just on now gets swapped out - thus, the
1582	* object on that map are no longer in memory. So check to see if the
1583	* players map changes, and if so, don't process any further.
1584	* If it does change, most likely we don't care about the results
1585	* of further conversation. Also, depending on the value of i,
1586	* the conversation would continue on the new map, which probably isn't
1587	* what is really wanted either.
1588	*/
1589	void communicate(object *op, const char *txt) {
1590	object *npc;
1591	int i, mflags;
1592	sint16 x, y;
1593	mapstruct *mp, *orig_map = op->map;
1594
1595	int flag=1; /*hasn't spoken to a NPC yet*/
1596	for(i = 0; i <= SIZEOFFREE2; i++) {
1597
1598	mp = op->map;
1599	x = op->x + freearr_x[i];
1600	y = op->y + freearr_y[i];
1601
1602	mflags = get_map_flags(mp, &mp, x, y, &x, &y);
1603	if (mflags & P_OUT_OF_MAP) continue;
1604
1605	for(npc = get_map_ob(mp,x,y); npc != NULL; npc = npc->above) {
1606	if (npc->type == MAGIC_EAR) {
1607	(void) talk_to_wall(op, npc, txt); /* Maybe exit after 1. success? */
1608	if (orig_map != op->map) {
1609	LOG(llevDebug,"Warning: Forced to swap out very recent map - MAX_OBJECTS should probably be increased\n");
1610	return;
1611	}
1612	}
1613	else if (flag) {
1614	#if 0
1615	if (talk_to_npc(op, npc,txt))
1616	flag=0; /* Can be crowded */
1617	#else
1618	talk_to_npc(op, npc,txt);
1619	#endif
1620	if (orig_map != op->map) {
1621	LOG(llevDebug,"Warning: Forced to swap out very recent map - MAX_OBJECTS should probably be increased\n");
1622	return;
1623	}
1624	}
1625	}
1626	}
1627	}
1628
1629	static int do_talk_npc(object* op, object* npc, object* override, const char* txt)
1630	{
1631	char* cp;
1632	char buf[MAX_BUF];
1633
1634	if(override->msg == NULL || *override->msg != '@')
1635	return 0;
1636
1637	cp = find_matching_message(op, override->msg, txt);
1638	if (cp) {
1639	sprintf(buf,"%s says:",query_name(npc));
1640	new_info_map(NDI_NAVY|NDI_UNIQUE, npc->map,buf);
1641	new_info_map(NDI_NAVY | NDI_UNIQUE, npc->map, cp);
1642	quest_apply_items(override,op->contr);
1643	free(cp);
1644	return 1;
1645	}
1646	return 0;
1647	}
1648
1649	int talk_to_npc(object *op, object *npc, const char *txt) {
1650	object *cobj;
1651
1652	/* Move this commone area up here - shouldn't cost much extra cpu
1653	* time, and makes the function more readable */
1654	/* Lauwenmark: Handle for plugin say event */
1655	if (op==npc) return 0;
1656	if (execute_event(npc, EVENT_SAY,op,NULL,txt,SCRIPT_FIX_ALL)!=0)
1657	return 0;
1658	/* Lauwenmark - Here we let the objects inside inventories hear and answer, too. */
1659	/* This allows the existence of "intelligent" weapons you can discuss with */
1660	for(cobj=npc->inv;cobj!=NULL; cobj = cobj->below)
1661	{
1662	if (execute_event(cobj, EVENT_SAY,op,NULL,txt,SCRIPT_FIX_ALL)!=0)
1663	return 0;
1664	}
1665	for ( cobj = npc->inv; cobj; cobj = cobj->below )
1666	if ( quest_is_override_compatible( cobj, op ) )
1667	if ( do_talk_npc( op, npc, cobj, txt ) )
1668	return 1;
1669	return do_talk_npc( op, npc, npc, txt );
1670	}
1671
1672	static int do_talk_wall(object* pl, object* npc, object* override, const char* txt)
1673	{
1674	char* cp;
1675	if(override->msg == NULL || *override->msg != '@')
1676	return 0;
1677
1678	cp = find_matching_message(pl, override->msg, txt);
1679	if (!cp)
1680	return 0;
1681
1682	new_info_map(NDI_NAVY | NDI_UNIQUE, npc->map,cp);
1683	use_trigger(npc);
1684	quest_apply_items(npc, pl->contr);
1685	free(cp);
1686
1687	return 1;
1688	}
1689
1690	int talk_to_wall(object* pl, object *npc, const char *txt) {
1691
1692	object* inv;
1693
1694	for ( inv = npc->inv; inv; inv = inv->below)
1695	if ( quest_is_override_compatible(inv, pl ) )
1696	if ( do_talk_wall( pl, npc, inv, txt ) )
1697	return 1;
1698
1699	return do_talk_wall( pl, npc, npc, txt );;
1700	}	1622	}
1701		1623
1702	/* find_mon_throw_ob() - modeled on find_throw_ob	1624	/* find_mon_throw_ob() - modeled on find_throw_ob
1703	* This is probably overly simplistic as it is now - We want	1625	* This is probably overly simplistic as it is now - We want
1704	* monsters to throw things like chairs and other pieces of	1626	* monsters to throw things like chairs and other pieces of
1705	* furniture, even if they are not good throwable objects.	1627	* furniture, even if they are not good throwable objects.
1706	* Probably better to have the monster throw a throwable object	1628	* Probably better to have the monster throw a throwable object
1707	* first, then throw any non equipped weapon.	1629	* first, then throw any non equipped weapon.
1708	*/	1630	*/
1709		1631	object *
1710	object *find_mon_throw_ob( object *op ) {	1632	find_mon_throw_ob (object *op)
		1633	{
1711	object *tmp = NULL;	1634	object *tmp = NULL;
1712
1713	if(op->head) tmp=op->head; else tmp=op;
1714		1635
		1636	if (op->head)
		1637	tmp = op->head;
		1638	else
		1639	tmp = op;
		1640
1715	/* New throw code: look through the inventory. Grap the first legal is_thrown	1641	/* New throw code: look through the inventory. Grap the first legal is_thrown
1716	* marked item and throw it to the enemy.	1642	* marked item and throw it to the enemy.
1717	*/	1643	*/
1718
1719	for(tmp=op->inv;tmp;tmp=tmp->below) {	1644	for (tmp = op->inv; tmp; tmp = tmp->below)
1720		1645	{
1721	/* Can't throw invisible objects or items that are applied */	1646	/* Can't throw invisible objects or items that are applied */
1722	if(tmp->invisible || QUERY_FLAG(tmp,FLAG_APPLIED)) continue;	1647	if (tmp->invisible || QUERY_FLAG (tmp, FLAG_APPLIED))
		1648	continue;
1723		1649
1724	if(QUERY_FLAG(tmp,FLAG_IS_THROWN))	1650	if (QUERY_FLAG (tmp, FLAG_IS_THROWN))
1725	break;	1651	break;
1726		1652
1727	}	1653	}
1728		1654
1729	#ifdef DEBUG_THROW	1655	#ifdef DEBUG_THROW
1730	LOG(llevDebug,"%s chooses to throw: %s (%d)\n",op->name,	1656	LOG (llevDebug, "%s chooses to throw: %s (%d)\n", op->name, !(tmp) ? "(nothing)" : query_name (tmp), tmp ? tmp->count : -1);
1731	!(tmp)?"(nothing)":query_name(tmp),tmp?tmp->count:-1);
1732	#endif	1657	#endif
1733		1658
1734	return tmp;	1659	return tmp;
1735	}	1660	}
1736		1661
1737	/* determine if we can 'detect' the enemy. Check for walls blocking the	1662	/* determine if we can 'detect' the enemy. Check for walls blocking the
1738	* los. Also, just because its hidden/invisible, we may be sensitive/smart	1663	* los. Also, just because its hidden/invisible, we may be sensitive/smart
1739	* enough (based on Wis & Int) to figure out where the enemy is. -b.t.	1664	* enough (based on Wis & Int) to figure out where the enemy is. -b.t.
…		…
1741	* properly. I also so odd code in place that checked for x distance	1666	* properly. I also so odd code in place that checked for x distance
1742	* OR y distance being within some range - that seemed wrong - both should	1667	* OR y distance being within some range - that seemed wrong - both should
1743	* be within the valid range. MSW 2001-08-05	1668	* be within the valid range. MSW 2001-08-05
1744	* Returns 0 if enemy can not be detected, 1 if it is detected	1669	* Returns 0 if enemy can not be detected, 1 if it is detected
1745	*/	1670	*/
1746		1671	int
1747	int can_detect_enemy (object *op, object *enemy, rv_vector *rv) {	1672	can_detect_enemy (object *op, object *enemy, rv_vector * rv)
		1673	{
1748	int radius = MIN_MON_RADIUS, hide_discovery;	1674	int radius = MIN_MON_RADIUS, hide_discovery;
1749		1675
1750	/* null detection for any of these condtions always */	1676	/* null detection for any of these condtions always */
1751	if(!op || !enemy || !op->map || !enemy->map)	1677	if (!op || !enemy || !op->map || !enemy->map)
1752	return 0;	1678	return 0;
1753		1679
1754	/* If the monster (op) has no way to get to the enemy, do nothing */	1680	/* If the monster (op) has no way to get to the enemy, do nothing */
1755	if (!on_same_map(op, enemy))	1681	if (!on_same_map (op, enemy))
1756	return 0;	1682	return 0;
1757		1683
1758	get_rangevector(op, enemy, rv, 0);	1684	get_rangevector (op, enemy, rv, 0);
1759		1685
1760	/* Monsters always ignore the DM */	1686	/* Monsters always ignore the DM */
1761	if ( ( op->type != PLAYER ) && QUERY_FLAG( enemy, FLAG_WIZ ) )	1687	if ((op->type != PLAYER) && QUERY_FLAG (enemy, FLAG_WIZ))
1762	return 0;	1688	return 0;
1763		1689
1764	/* simple check. Should probably put some range checks in here. */	1690	/* simple check. Should probably put some range checks in here. */
1765	if(can_see_enemy(op,enemy)) return 1;	1691	if (can_see_enemy (op, enemy))
		1692	return 1;
1766		1693
1767	/* The rest of this is for monsters. Players are on their own for	1694	/* The rest of this is for monsters. Players are on their own for
1768	* finding enemies!	1695	* finding enemies!
1769	*/	1696	*/
1770	if(op->type==PLAYER) return 0;	1697	if (op->type == PLAYER)
		1698	return 0;
1771		1699
1772	/* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE	1700	/* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE
1773	* flag (which was already checked) in can_see_enmy (). Lets get out of here	1701	* flag (which was already checked) in can_see_enmy (). Lets get out of here
1774	*/	1702	*/
1775	if(enemy->invisible && (!enemy->contr || (!enemy->contr->tmp_invis && !enemy->contr->hidden)))	1703	if (enemy->invisible && (!enemy->contr || (!enemy->contr->tmp_invis && !enemy->contr->hidden)))
1776	return 0;	1704	return 0;
1777		1705
1778	/* use this for invis also */	1706	/* use this for invis also */
1779	hide_discovery = op->stats.Int/5;	1707	hide_discovery = op->stats.Int / 5;
1780		1708
1781	/* Determine Detection radii */	1709	/* Determine Detection radii */
1782	if(!enemy->hide) /* to detect non-hidden (eg dark/invis enemy) */	1710	if (!enemy->flag [FLAG_HIDDEN]) /* to detect non-hidden (eg dark/invis enemy) */
1783	radius = (op->stats.Wis/5)+1>MIN_MON_RADIUS?(op->stats.Wis/5)+1:MIN_MON_RADIUS;	1711	radius = max (MIN_MON_RADIUS, op->stats.Wis / 5 + 1);
		1712	else
1784	else { /* a level/INT/Dex adjustment for hiding */	1713	{ /* a level/INT/Dex adjustment for hiding */
1785	object *sk_hide;
1786	int bonus = (op->level/2) + (op->stats.Int/5);	1714	int bonus = op->level / 2 + op->stats.Int / 5;
1787		1715
1788	if(enemy->type==PLAYER) {	1716	if (enemy->type == PLAYER)
		1717	{
1789	if((sk_hide = find_skill_by_number(enemy,SK_HIDING)))	1718	if (object *sk_hide = find_skill_by_number (enemy, SK_HIDING))
1790	bonus -= sk_hide->level;	1719	bonus -= sk_hide->level;
1791	else {	1720	else
		1721	{
1792	LOG(llevError,"can_detect_enemy() got hidden player w/o hiding skill!\n");	1722	LOG (llevError, "can_detect_enemy() got hidden player w/o hiding skill!\n");
1793	make_visible(enemy);	1723	make_visible (enemy);
1794	radius=radius<MIN_MON_RADIUS?MIN_MON_RADIUS:radius;	1724	radius = radius < MIN_MON_RADIUS ? MIN_MON_RADIUS : radius;
1795	}	1725	}
1796	}	1726	}
1797	else /* enemy is not a player */	1727	else /* enemy is not a player */
1798	bonus -= enemy->level;	1728	bonus -= enemy->level;
1799		1729
1800	radius += bonus/5;	1730	radius += bonus / 5;
1801	hide_discovery += bonus*5;	1731	hide_discovery += bonus * 5;
1802	} /* else creature has modifiers for hiding */	1732	} /* else creature has modifiers for hiding */
1803		1733
1804	/* Radii stealth adjustment. Only if you are stealthy	1734	/* Radii stealth adjustment. Only if you are stealthy
1805	* will you be able to sneak up closer to creatures */	1735	* will you be able to sneak up closer to creatures */
1806	if(QUERY_FLAG(enemy,FLAG_STEALTH))	1736	if (QUERY_FLAG (enemy, FLAG_STEALTH))
1807	radius = radius/2, hide_discovery = hide_discovery/3;	1737	{
		1738	radius /= 2;
		1739	hide_discovery /= 3;
		1740	}
1808		1741
1809	/* Radii adjustment for enemy standing in the dark */	1742	/* Radii adjustment for enemy standing in the dark */
1810	if(op->map->darkness>0 && !stand_in_light(enemy)) {	1743	if (op->map->darkness > 0 && !stand_in_light (enemy))
		1744	{
1811	/* on dark maps body heat can help indicate location with infravision	1745	/* on dark maps body heat can help indicate location with infravision
1812	* undead don't have body heat, so no benefit detecting them.	1746	* undead don't have body heat, so no benefit detecting them.
1813	*/	1747	*/
1814	if(QUERY_FLAG(op,FLAG_SEE_IN_DARK) && !is_true_undead(enemy))	1748	if (QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !is_true_undead (enemy))
1815	radius += op->map->darkness/2;	1749	radius += op->map->darkness / 2;
1816	else	1750	else
1817	radius -= op->map->darkness/2;	1751	radius -= op->map->darkness / 2;
1818		1752
1819	/* op next to a monster (and not in complete darkness)	1753	/* op next to a monster (and not in complete darkness)
1820	* the monster should have a chance to see you.	1754	* the monster should have a chance to see you.
1821	*/	1755	*/
1822	if(radius<MIN_MON_RADIUS && op->map->darkness<5 && rv->distance<=1)	1756	if (radius < MIN_MON_RADIUS && op->map->darkness < 5 && rv->distance <= 1)
1823	radius = MIN_MON_RADIUS;	1757	radius = MIN_MON_RADIUS;
1824	} /* if on dark map */	1758	} /* if on dark map */
1825		1759
1826	/* Lets not worry about monsters that have incredible detection	1760	/* Lets not worry about monsters that have incredible detection
1827	* radii, we only need to worry here about things the player can	1761	* radii, we only need to worry here about things the player can
1828	* (potentially) see. This is 13, as that is the maximum size the player	1762	* (potentially) see. This is 13, as that is the maximum size the player
1829	* may have for their map - in that way, creatures at the edge will	1763	* may have for their map - in that way, creatures at the edge will
1830	* do something. Note that the distance field in the	1764	* do something. Note that the distance field in the
1831	* vector is real distance, so in theory this should be 18 to	1765	* vector is real distance, so in theory this should be 18 to
1832	* find that.	1766	* find that.
1833	*/	1767	*/
1834	if(radius>13) radius = 13;	1768	// note that the above reasoning was utter bullshit even at the time it was written
		1769	// we use 25, lets see if we have the cpu time for it
		1770	radius = min (25, radius);
1835		1771
1836	/* Enemy in range! Now test for detection */	1772	/* Enemy in range! Now test for detection */
1837	if ((int) rv->distance <= radius) {	1773	if (rv->distance <= radius)
		1774	{
1838	/* ah, we are within range, detected? take cases */	1775	/* ah, we are within range, detected? take cases */
1839	if(!enemy->invisible) /* enemy in dark squares... are seen! */	1776	if (!enemy->invisible) /* enemy in dark squares... are seen! */
1840	return 1;	1777	return 1;
1841		1778
1842	/* hidden or low-quality invisible */	1779	/* hidden or low-quality invisible */
1843	if(enemy->hide && (rv->distance <= 1) && (RANDOM()%100<=hide_discovery)) {	1780	if (enemy->flag [FLAG_HIDDEN] && rv->distance <= 1 && rndm (100) <= hide_discovery)
		1781	{
1844	make_visible(enemy);	1782	make_visible (enemy);
		1783
1845	/* inform players of new status */	1784	/* inform players of new status */
1846	if(enemy->type==PLAYER && player_can_view(enemy,op))	1785	if (enemy->type == PLAYER && player_can_view (enemy, op))
1847	new_draw_info_format(NDI_UNIQUE,0, enemy,	1786	new_draw_info_format (NDI_UNIQUE, 0, enemy, "You are discovered by %s!", &op->name);
1848	"You are discovered by %s!",op->name);	1787
1849	return 1; /* detected enemy */	1788	return 1; /* detected enemy */
1850	}	1789	}
1851	else if (enemy->invisible) {	1790	else if (enemy->invisible)
		1791	{
1852	/* Change this around - instead of negating the invisible, just	1792	/* Change this around - instead of negating the invisible, just
1853	* return true so that the mosnter that managed to detect you can	1793	* return true so that the monster that managed to detect you can
1854	* do something to you. Decreasing the duration of invisible	1794	* do something to you. Decreasing the duration of invisible
1855	* doesn't make a lot of sense IMO, as a bunch of stupid creatures	1795	* doesn't make a lot of sense IMO, as a bunch of stupid creatures
1856	* can then basically negate the spell. The spell isn't negated -	1796	* can then basically negate the spell. The spell isn't negated -
1857	* they just know where you are!	1797	* they just know where you are!
1858	*/	1798	*/
1859	if ((RANDOM() % 50) <= hide_discovery) {	1799	if (rndm (50) <= hide_discovery)
1860	if (enemy->type == PLAYER) {	1800	{
1861	new_draw_info_format(NDI_UNIQUE,0, enemy,	1801	if (enemy->type == PLAYER)
1862	"You see %s noticing your position.", query_name(op));	1802	new_draw_info_format (NDI_UNIQUE, 0, enemy, "You see %s noticing your position.", query_name (op));
1863	}
1864	return 1;
1865	}
1866	}
1867	} /* within range */
1868		1803
		1804	return 1;
		1805	}
		1806	}
		1807	} /* within range */
		1808
1869	/* Wasn't detected above, so still hidden */	1809	/* Wasn't detected above, so still hidden */
1870	return 0;	1810	return 0;
1871	}	1811	}
1872		1812
1873	/* determine if op stands in a lighted square. This is not a very	1813	/* determine if op stands in a lighted square. This is not a very
1874	* intellegent algorithm. For one thing, we ignore los here, SO it	1814	* intellegent algorithm. For one thing, we ignore los here, SO it
1875	* is possible for a bright light to illuminate a player on the	1815	* is possible for a bright light to illuminate a player on the
1876	* other side of a wall (!).	1816	* other side of a wall (!).
1877	*/	1817	*/
1878		1818	int
1879	int stand_in_light( object *op) {	1819	stand_in_light (object *op)
1880	sint16 nx,ny;	1820	{
1881	mapstruct *m;	1821	if (!op)
1882
1883
1884	if(!op) return 0;	1822	return 0;
		1823
1885	if(op->glow_radius > 0) return 1;	1824	if (op->glow_radius > 0)
		1825	return 1;
1886		1826
1887	if(op->map) {	1827	if (op->map)
1888	int x, y, x1, y1;	1828	{
1889
1890
1891
1892	/* Check the spaces with the max light radius to see if any of them	1829	/* Check the spaces with the max light radius to see if any of them
1893	* have lights, and if any of them light the player enough, then return 1.	1830	* have lights, and if any of them light the player enough, then return 1.
1894	*/	1831	*/
1895	for (x = op->x - MAX_LIGHT_RADII; x <= op->x + MAX_LIGHT_RADII; x++) {	1832	for (int x = op->x - MAX_LIGHT_RADII; x <= op->x + MAX_LIGHT_RADII; x++)
		1833	{
1896	for (y = op->y - MAX_LIGHT_RADII; y <= op->y + MAX_LIGHT_RADII; y++) {	1834	for (int y = op->y - MAX_LIGHT_RADII; y <= op->y + MAX_LIGHT_RADII; y++)
1897	m = op->map;	1835	{
1898	nx = x;	1836	maptile *m = op->map;
1899	ny = y;	1837	sint16 nx = x;
		1838	sint16 ny = y;
1900		1839
1901	if (get_map_flags(m, &m, nx, ny, &nx, &ny) & P_OUT_OF_MAP) continue;	1840	if (xy_normalise (m, nx, ny))
1902		1841	if (idistance (x - op->x, y - op->y) < m->at (nx, ny).light)
1903	x1 = abs(x - op->x)*abs(x - op->x);	1842	return 1;
1904	y1 = abs(y - op->y)*abs(y - op->y);	1843	}
1905	if (isqrt(x1 + y1) < GET_MAP_LIGHT(m, nx, ny)) return 1;	1844	}
1906	}	1845	}
1907	}	1846
1908	}
1909	return 0;	1847	return 0;
1910	}	1848	}
1911
1912		1849
1913	/* assuming no walls/barriers, lets check to see if its *possible*	1850	/* assuming no walls/barriers, lets check to see if its *possible*
1914	* to see an enemy. Note, "detection" is different from "seeing".	1851	* to see an enemy. Note, "detection" is different from "seeing".
1915	* See can_detect_enemy() for more details. -b.t.	1852	* See can_detect_enemy() for more details. -b.t.
1916	* return 0 if can't be seen, 1 if can be	1853	* return 0 if can't be seen, 1 if can be
1917	*/	1854	*/
1918		1855	int
1919	int can_see_enemy (object *op, object *enemy) {	1856	can_see_enemy (object *op, object *enemy)
		1857	{
1920	object *looker = op->head?op->head:op;	1858	object *looker = op->head ? op->head : op;
1921		1859
1922	/* safety */	1860	/* safety */
1923	if(!looker||!enemy||!QUERY_FLAG(looker,FLAG_ALIVE))	1861	if (!looker || !enemy || !QUERY_FLAG (looker, FLAG_ALIVE))
1924	return 0;	1862	return 0;
1925		1863
1926	/* we dont give a full treatment of xrays here (shorter range than normal,	1864	/* we dont give a full treatment of xrays here (shorter range than normal,
1927	* see through walls). Should we change the code elsewhere to make you	1865	* see through walls). Should we change the code elsewhere to make you
1928	* blind even if you can xray?	1866	* blind even if you can xray?
1929	*/	1867	*/
1930	if(QUERY_FLAG(looker,FLAG_BLIND) && !QUERY_FLAG(looker,FLAG_XRAYS))	1868	if (QUERY_FLAG (looker, FLAG_BLIND) && !QUERY_FLAG (looker, FLAG_XRAYS))
1931	return 0;	1869	return 0;
1932		1870
1933	/* checking for invisible things */	1871	/* checking for invisible things */
1934	if(enemy->invisible) {	1872	if (enemy->invisible)
		1873	{
1935	/* HIDDEN ENEMY. by definition, you can't see hidden stuff!	1874	/* HIDDEN ENEMY. by definition, you can't see hidden stuff!
1936	* However,if you carry any source of light, then the hidden	1875	* However,if you carry any source of light, then the hidden
1937	* creature is seeable (and stupid) */	1876	* creature is seeable (and stupid) */
1938		1877
1939	if(has_carried_lights(enemy)) {	1878	if (has_carried_lights (enemy))
1940	if(enemy->hide) {	1879	{
1941	make_visible(enemy);	1880	if (enemy->flag [FLAG_HIDDEN])
1942	new_draw_info(NDI_UNIQUE,0, enemy,	1881	{
1943	"Your light reveals your hiding spot!");	1882	make_visible (enemy);
1944	}	1883	new_draw_info (NDI_UNIQUE, 0, enemy, "Your light reveals your hiding spot!");
		1884	}
		1885
1945	return 1;	1886	return 1;
1946	} else if (enemy->hide) return 0;	1887	}
		1888	else if (enemy->flag [FLAG_HIDDEN])
		1889	return 0;
1947		1890
1948	/* Invisible enemy. Break apart the check for invis undead/invis looker	1891	/* Invisible enemy. Break apart the check for invis undead/invis looker
1949	* into more simple checks - the QUERY_FLAG doesn't return 1/0 values,	1892	* into more simple checks - the QUERY_FLAG doesn't return 1/0 values,
1950	* and making it a conditional makes the code pretty ugly.	1893	* and making it a conditional makes the code pretty ugly.
1951	*/	1894	*/
1952	if (!QUERY_FLAG(looker,FLAG_SEE_INVISIBLE)) {	1895	if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE))
1953	if (makes_invisible_to(enemy, looker)) return 0;	1896	if (makes_invisible_to (enemy, looker))
1954	}	1897	return 0;
		1898	}
1955	} else if(looker->type==PLAYER) /* for players, a (possible) shortcut */	1899	else if (looker->type == PLAYER) /* for players, a (possible) shortcut */
1956	if(player_can_view(looker,enemy)) return 1;	1900	if (player_can_view (looker, enemy))
		1901	return 1;
1957		1902
1958	/* ENEMY IN DARK MAP. Without infravision, the enemy is not seen	1903	/* ENEMY IN DARK MAP. Without infravision, the enemy is not seen
1959	* unless they carry a light or stand in light. Darkness doesnt	1904	* unless they carry a light or stand in light. Darkness doesnt
1960	* inhibit the undead per se (but we should give their archs	1905	* inhibit the undead per se (but we should give their archs
1961	* CAN_SEE_IN_DARK, this is just a safety	1906	* CAN_SEE_IN_DARK, this is just a safety
1962	* we care about the enemy maps status, not the looker.	1907	* we care about the enemy maps status, not the looker.
1963	* only relevant for tiled maps, but it is possible that the	1908	* only relevant for tiled maps, but it is possible that the
1964	* enemy is on a bright map and the looker on a dark - in that	1909	* enemy is on a bright map and the looker on a dark - in that
1965	* case, the looker can still see the enemy	1910	* case, the looker can still see the enemy
1966	*/	1911	*/
1967	if(enemy->map->darkness>0&&!stand_in_light(enemy)	1912	if (enemy->map->darkness > 0 && !stand_in_light (enemy)
1968	&&(!QUERY_FLAG(looker,FLAG_SEE_IN_DARK)||	1913	&& (!QUERY_FLAG (looker, FLAG_SEE_IN_DARK) || !is_true_undead (looker) || !QUERY_FLAG (looker, FLAG_XRAYS)))
1969	!is_true_undead(looker)||!QUERY_FLAG(looker,FLAG_XRAYS)))
1970	return 0;	1914	return 0;
1971		1915
1972	return 1;	1916	return 1;
1973	}	1917	}
1974		1918

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