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Comparing deliantra/server/server/monster.C (file contents):
Revision 1.4 by root, Tue Aug 29 08:01:37 2006 UTC vs.
Revision 1.65 by root, Fri Sep 25 18:44:58 2009 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 1.4 2006/08/29 08:01:37 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	{
48	/* if this is pet, let him attack the same enemy as his owner	40	/* 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,	41	* TODO: when there is no ower enemy, try to find a target,
50	* which CAN attack the owner. */	42	* which CAN attack the owner. */
51	if ((npc->attack_movement & HI4) == PETMOVE)	43	if ((npc->attack_movement & HI4) == PETMOVE)
52	{	44	{
53	if (npc->owner == NULL)	45	if (npc->owner == NULL)
54	npc->enemy = NULL;	46	npc->enemy = NULL;
55	else if (npc->enemy == NULL)	47	else if (npc->enemy == NULL)
56	npc->enemy = npc->owner->enemy;	48	npc->enemy = npc->owner->enemy;
57	}	49	}
58		50
59	/* periodically, a monster mayu change its target. Also, if the object	51	/* periodically, a monster mayu change its target. Also, if the object
60	* has been destroyed, etc, clear the enemy.	52	* has been destroyed, etc, clear the enemy.
61	* TODO: this should be changed, because it invokes to attack forced or	53	* TODO: this should be changed, because it invokes to attack forced or
62	* attacked monsters to leave the attacker alone, before it is destroyed	54	* attacked monsters to leave the attacker alone, before it is destroyed
63	*/	55	*/
64	/* i had removed the random target leave, this invokes problems with friendly	56	/* 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	57	* objects, getting attacked and defending herself - they don't try to attack
66	* again then but perhaps get attack on and on	58	* 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	59	* If we include a aggravated flag in , we can handle evil vs evil and good vs good
68	* too. */	60	* too. */
69		61
70	if(npc->enemy)	62	if (npc->enemy)
71	{	63	{
72	/* I broke these if's apart to better be able to see what	64	/* I broke these if's apart to better be able to see what
73	* the grouping checks are. Code is the same.	65	* the grouping checks are. Code is the same.
74	*/	66	*/
75	if ( QUERY_FLAG(npc->enemy,FLAG_REMOVED) ||	67	if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) ||
76	QUERY_FLAG(npc->enemy,FLAG_FREED) ||	68	QUERY_FLAG (npc->enemy, FLAG_FREED) ||
77	!on_same_map(npc, npc->enemy) ||	69	!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;	70	npc->enemy = NULL;
82		71
83	else if (QUERY_FLAG(npc, FLAG_FRIENDLY) && (	72	else if (QUERY_FLAG (npc, FLAG_FRIENDLY) && ((QUERY_FLAG (npc->enemy, FLAG_FRIENDLY)
84	(QUERY_FLAG(npc->enemy, FLAG_FRIENDLY) && !(should_arena_attack(npc, npc->owner, npc->enemy))) ||	73	&& !(should_arena_attack (npc, npc->owner, npc->enemy)))
85	((npc->enemy->type == PLAYER) && !(should_arena_attack(npc, npc->owner, npc->enemy)))	74	|| ((npc->enemy->type == PLAYER) && !(should_arena_attack (npc, npc->owner, npc->enemy)))
86	|| npc->enemy == npc->owner))	75	|| npc->enemy == npc->owner))
87	npc->enemy = NULL;	76	npc->enemy = NULL;
88		77
89		78
90	else if (!QUERY_FLAG(npc, FLAG_FRIENDLY) &&	79	else if (!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (npc->enemy, FLAG_FRIENDLY) && npc->enemy->type != PLAYER))
91	(!QUERY_FLAG(npc->enemy, FLAG_FRIENDLY) && npc->enemy->type!=PLAYER))
92	npc->enemy=NULL;	80	npc->enemy = NULL;
93		81
94	/* I've noticed that pets could sometimes get an arrow as the	82	/* I've noticed that pets could sometimes get an arrow as the
95	* target enemy - this code below makes sure the enemy is something	83	* target enemy - this code below makes sure the enemy is something
96	* that should be attacked. My guess is that the arrow hits	84	* that should be attacked. My guess is that the arrow hits
97	* the creature/owner, and so the creature then takes that	85	* the creature/owner, and so the creature then takes that
98	* as the enemy to attack.	86	* as the enemy to attack.
99	*/	87	*/
100	else if (!QUERY_FLAG(npc->enemy, FLAG_MONSTER) &&	88	else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER)
101	!QUERY_FLAG(npc->enemy,FLAG_GENERATOR) &&	89	&& !QUERY_FLAG (npc->enemy, FLAG_GENERATOR)
102	npc->enemy->type!=PLAYER && npc->enemy->type != GOLEM)	90	&& npc->enemy->type != PLAYER
		91	&& npc->enemy->type != GOLEM)
103	npc->enemy=NULL;	92	npc->enemy = NULL;
104		93
105	}	94	}
		95
106	return can_detect_enemy(npc,npc->enemy,rv)?npc->enemy:NULL;	96	return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : NULL;
107	}	97	}
108		98
109	/* Returns the nearest living creature (monster or generator).	99	/* Returns the nearest living creature (monster or generator).
110	* Modified to deal with tiled maps properly.	100	* Modified to deal with tiled maps properly.
111	* Also fixed logic so that monsters in the lower directions were more	101	* Also fixed logic so that monsters in the lower directions were more
…		…
118	* the first few directions, it could very well choose something	108	* the first few directions, it could very well choose something
119	* 3 spaces away even though something directly north is closer.	109	* 3 spaces away even though something directly north is closer.
120	*	110	*
121	* this function is map tile aware.	111	* this function is map tile aware.
122	*/	112	*/
		113	object *
123	object *find_nearest_living_creature(object *npc) {	114	find_nearest_living_creature (object *npc)
		115	{
124	int i,mflags;	116	int i, mflags;
125	sint16 nx,ny;	117	sint16 nx, ny;
126	mapstruct *m;	118	maptile *m;
127	object *tmp;
128	int search_arr[SIZEOFFREE];	119	int search_arr[SIZEOFFREE];
129		120
130	get_search_arr(search_arr);	121	get_search_arr (search_arr);
		122
131	for(i=0;i<SIZEOFFREE;i++) {	123	for (i = 0; i < SIZEOFFREE; i++)
		124	{
132	/* modified to implement smart searching using search_arr	125	/* modified to implement smart searching using search_arr
133	* guidance array to determine direction of search order	126	* guidance array to determine direction of search order
134	*/	127	*/
135	nx = npc->x + freearr_x[search_arr[i]];	128	nx = npc->x + freearr_x[search_arr[i]];
136	ny = npc->y + freearr_y[search_arr[i]];	129	ny = npc->y + freearr_y[search_arr[i]];
137	m = npc->map;	130	m = npc->map;
138		131
139	mflags = get_map_flags(m, &m, nx, ny, &nx, &ny);	132	mflags = get_map_flags (m, &m, nx, ny, &nx, &ny);
		133
140	if (mflags & P_OUT_OF_MAP) continue;	134	if (mflags & P_OUT_OF_MAP)
		135	continue;
141		136
142	if (mflags & P_IS_ALIVE) {	137	if (mflags & P_IS_ALIVE)
143	tmp=get_map_ob(m,nx,ny);	138	{
144	while(tmp!=NULL && !QUERY_FLAG(tmp,FLAG_MONSTER)&&	139	for (object *tmp = m->at (nx, ny).top; tmp; tmp = tmp->below)
145	!QUERY_FLAG(tmp,FLAG_GENERATOR ) && tmp->type!=PLAYER)	140	if (tmp->flag [FLAG_MONSTER] || tmp->flag [FLAG_GENERATOR] || tmp->type == PLAYER)
146	tmp=tmp->above;
147
148	if (!tmp) {
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	}
152	else {
153	if(can_see_monsterP(m,nx,ny,i))	141	if (can_see_monsterP (m, nx, ny, i))
154	return tmp;	142	return tmp;
155	}	143	}
156	} /* is something living on this space */
157	}	144	}
158	return NULL; /* nothing found */
159	}
160		145
		146	return 0;
		147	}
161		148
162	/* Tries to find an enmy for npc. We pass the range vector since	149	/* Tries to find an enemy for npc. We pass the range vector since
163	* our caller will find the information useful.	150	* our caller will find the information useful.
164	* Currently, only move_monster calls this function.	151	* Currently, only move_monster calls this function.
165	* Fix function so that we always make calls to get_rangevector	152	* Fix function so that we always make calls to get_rangevector
166	* if we have a valid target - function as not doing so in	153	* if we have a valid target - function as not doing so in
167	* many cases.	154	* many cases.
168	*/	155	*/
169		156	object *
170	object *find_enemy(object *npc, rv_vector *rv)	157	find_enemy (object *npc, rv_vector * rv)
171	{	158	{
172	object *attacker, *tmp=NULL;	159	object *attacker, *tmp = NULL;
173		160
174	attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */	161	attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */
175	npc->attacked_by = NULL; /* always clear the attacker entry */	162	npc->attacked_by = 0; /* always clear the attacker entry */
176		163
177	/* if we berserk, we don't care about others - we attack all we can find */	164	/* if we berserk, we don't care about others - we attack all we can find */
178	if(QUERY_FLAG(npc,FLAG_BERSERK)) {	165	if (QUERY_FLAG (npc, FLAG_BERSERK))
		166	{
179	tmp = find_nearest_living_creature(npc);	167	tmp = find_nearest_living_creature (npc);
		168
		169	if (tmp)
180	if (tmp) get_rangevector(npc, tmp, rv, 0);	170	get_rangevector (npc, tmp, rv, 0);
		171
181	return tmp;	172	return tmp;
182	}	173	}
183		174
184	/* Here is the main enemy selection.	175	/* Here is the main enemy selection.
185	* We want this: if there is an enemy, attack him until its not possible or	176	* We want this: if there is an enemy, attack him until its not possible or
186	* one of both is dead.	177	* one of both is dead.
187	* If we have no enemy and we are...	178	* If we have no enemy and we are...
188	* a monster: try to find a player, a pet or a friendly monster	179	* 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	180	* 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	181	* a neutral: fight a attacker (but there should be none), then do nothing
191	* a pet: attack player enemy or a monster	182	* a pet: attack player enemy or a monster
192	*/	183	*/
193		184
194	/* pet move */	185	/* pet move */
195	if ((npc->attack_movement & HI4) == PETMOVE) {	186	if ((npc->attack_movement & HI4) == PETMOVE)
		187	{
196	tmp= get_pet_enemy(npc,rv);	188	tmp = get_pet_enemy (npc, rv);
		189
		190	if (tmp)
197	if (tmp) get_rangevector(npc, tmp, rv, 0);	191	get_rangevector (npc, tmp, rv, 0);
		192
198	return tmp;	193	return tmp;
199	}
200		194	}
		195
201	/* we check our old enemy. */	196	/* we check our old enemy. */
202	if((tmp=check_enemy(npc, rv))==NULL)	197	if (!(tmp = check_enemy (npc, rv)))
203	{	198	{
204	if(attacker) /* if we have an attacker, check him */	199	if (attacker) /* if we have an attacker, check him */
205	{	200	{
206	/* we want be sure this is the right one! */	201	/* TODO: that's not finished */
207	if(attacker->count == npc->attacked_by_count)	202	/* we don't want a fight evil vs evil or good against non evil */
		203
		204	if (QUERY_FLAG (npc, FLAG_NEUTRAL) || QUERY_FLAG (attacker, FLAG_NEUTRAL) || /* neutral */
		205	(QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) ||
		206	(!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (attacker, FLAG_FRIENDLY) && attacker->type != PLAYER)))
		207	CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */
		208	else if (on_same_map (npc, attacker)) /* that's the only thing we must know... */
208	{	209	{
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! */	210	CLEAR_FLAG (npc, FLAG_SLEEP); /* well, NOW we really should wake up! */
220	npc->enemy = attacker;	211	npc->enemy = attacker;
221	return attacker; /* yes, we face our attacker! */	212	return attacker; /* yes, we face our attacker! */
222	}
223	}	213	}
224	}	214	}
225		215
226	/* we have no legal enemy or attacker, so we try to target a new one */	216	/* 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) &&	217	if (!QUERY_FLAG (npc, FLAG_UNAGGRESSIVE) && !QUERY_FLAG (npc, FLAG_FRIENDLY) && !QUERY_FLAG (npc, FLAG_NEUTRAL))
228	!QUERY_FLAG(npc, FLAG_NEUTRAL))
229	{	218	{
230	npc->enemy = get_nearest_player(npc);	219	npc->enemy = get_nearest_player (npc);
231	if (npc->enemy)	220	if (npc->enemy)
232	tmp = check_enemy(npc,rv);	221	tmp = check_enemy (npc, rv);
233	}
234		222	}
235	}
236		223
		224	}
		225
237	return tmp;	226	return tmp;
238	}	227	}
239		228
240	/* Sees if this monster should wake up.	229	/* Sees if this monster should wake up.
241	* Currently, this is only called from move_monster, and	230	* Currently, this is only called from move_monster, and
242	* if enemy is set, then so should be rv.	231	* if enemy is set, then so should be rv.
243	* returns 1 if the monster should wake up, 0 otherwise.	232	* returns 1 if the monster should wake up, 0 otherwise.
244	*/	233	*/
245		234	int
246	int check_wakeup(object *op, object *enemy, rv_vector *rv) {	235	check_wakeup (object *op, object *enemy, rv_vector *rv)
247	int radius = op->stats.Wis>MIN_MON_RADIUS?op->stats.Wis:MIN_MON_RADIUS;	236	{
248
249	/* Trim work - if no enemy, no need to do anything below */	237	/* Trim work - if no enemy, no need to do anything below */
250	if (!enemy) return 0;	238	if (!enemy)
		239	return 0;
251		240
		241	if (!op->flag [FLAG_SLEEP])
		242	return 1;
		243
		244	int radius = max (op->stats.Wis, MIN_MON_RADIUS);
		245
		246	if (op->flag [FLAG_BLIND])
252	/* blinded monsters can only find nearby objects to attack */	247	/* blinded monsters can only find nearby objects to attack */
253	if(QUERY_FLAG(op, FLAG_BLIND))
254	radius = MIN_MON_RADIUS;	248	radius = MIN_MON_RADIUS;
255		249	else if (op->map
		250	&& !enemy->invisible
		251	&& !stand_in_light (enemy)
		252	&& (!op->flag[FLAG_SEE_IN_DARK] || !op->flag [FLAG_SEE_INVISIBLE]))
256	/* This covers the situation where the monster is in the dark	253	/* 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	254	* and has an enemy. If the enemy has no carried light (or isnt
258	* glowing!) then the monster has trouble finding the enemy.	255	* glowing!) then the monster has trouble finding the enemy.
259	* Remember we already checked to see if the monster can see in	256	* Remember we already checked to see if the monster can see in
260	* the dark. */	257	* the dark. */
		258	radius = min (radius, MIN_MON_RADIUS + MAX_DARKNESS - op->map->darklevel ());
261		259
262	else if(op->map && op->map->darkness>0 && enemy && !enemy->invisible &&	260	if (enemy->flag [FLAG_STEALTH])
263	!stand_in_light(enemy) &&	261	radius = radius / 2 + 1;
264	(!QUERY_FLAG(op,FLAG_SEE_IN_DARK) || !QUERY_FLAG(op,FLAG_SEE_INVISIBLE))) {
265	int dark = radius/(op->map->darkness);
266	radius = (dark>MIN_MON_RADIUS)?(dark+1):MIN_MON_RADIUS;
267	}
268	else if(!QUERY_FLAG(op,FLAG_SLEEP)) return 1;
269		262
270	/* enemy should already be on this map, so don't really need to check	263	/* enemy should already be on this map, so don't really need to check
271	* for that.	264	* for that.
272	*/	265	*/
273	if (rv->distance < (QUERY_FLAG(enemy, FLAG_STEALTH)?(radius/2)+1:radius)) {	266	if (rv->distance <= radius)
		267	{
274	CLEAR_FLAG(op,FLAG_SLEEP);	268	CLEAR_FLAG (op, FLAG_SLEEP);
275	return 1;	269	return 1;
276	}	270	}
		271
277	return 0;	272	return 0;
278	}	273	}
279		274
		275	int
280	int move_randomly(object *op) {	276	move_randomly (object *op)
281	int i;	277	{
282
283	/* Give up to 15 chances for a monster to move randomly */	278	/* Give up to 15 chances for a monster to move randomly */
284	for(i=0;i<15;i++) {	279	for (int i = 0; i < 15; i++)
285	if(move_object(op,RANDOM()%8+1))	280	if (move_object (op, rndm (8) + 1))
286	return 1;	281	return 1;
287	}	282
288	return 0;	283	return 0;
289	}	284	}
290		285
291	/*	286	/*
292	* Move-monster returns 1 if the object has been freed, otherwise 0.	287	* Move-monster returns 1 if the object has been freed, otherwise 0.
293	*/	288	*/
294		289	int
295	int move_monster(object *op) {	290	move_monster (object *op)
		291	{
296	int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */	292	int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */
297	object *owner, *enemy, *part, *oph=op;	293	object *owner, *enemy, *part, *oph = op;
298	rv_vector rv;	294	rv_vector rv;
299		295
300	/* Monsters not on maps don't do anything. These monsters are things	296	/* Monsters not on maps don't do anything. These monsters are things
301	* Like royal guards in city dwellers inventories.	297	* Like royal guards in city dwellers inventories.
302	*/	298	*/
303	if (!op->map) return 0;	299	if (!op->map)
		300	return 0;
304		301
305	/* for target facing, we copy this value here for fast access */	302	/* for target facing, we copy this value here for fast access */
306	if(oph->head) /* force update the head - one arch one pic */	303	if (oph->head) /* force update the head - one arch one pic */
307	oph = oph->head;	304	oph = oph->head;
308		305
309	if (QUERY_FLAG(op, FLAG_NO_ATTACK)) /* we never ever attack */	306	if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */
310	enemy = op->enemy = NULL;	307	enemy = op->enemy = NULL;
311	else if((enemy= find_enemy(op, &rv)))	308	else if ((enemy = find_enemy (op, &rv)))
312	{
313	/* we have an enemy, just tell him we want him dead */	309	/* we have an enemy, just tell him we want him dead */
314	enemy->attacked_by = op; /* our ptr */	310	enemy->attacked_by = op; /* our ptr */
315	enemy->attacked_by_count = op->count; /* our tag */	311
316	}
317
318	/* generate hp, if applicable */	312	/* generate hp, if applicable */
319	if(op->stats.Con > 0 && op->stats.hp < op->stats.maxhp) {	313	if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
320		314	{
321	/* last heal is in funny units. Dividing by speed puts	315	/* last heal is in funny units. Dividing by speed puts
322	* the regeneration rate on a basis of time instead of	316	* the regeneration rate on a basis of time instead of
323	* #moves the monster makes. The scaling by 8 is	317	* #moves the monster makes. The scaling by 8 is
324	* to capture 8th's of a hp fraction regens	318	* to capture 8th's of a hp fraction regens
325	*	319	*
326	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)	320	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)
327	* overflow might produce monsters with negative hp.	321	* overflow might produce monsters with negative hp.
328	*/	322	*/
329		323
330	op->last_heal+= (int)((float)(8*op->stats.Con)/FABS(op->speed));	324	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 */	325	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;	326	op->last_heal %= 32;
333		327
334	/* So if the monster has gained enough HP that they are no longer afraid */	328	/* So if the monster has gained enough HP that they are no longer afraid */
335	if (QUERY_FLAG(op,FLAG_RUN_AWAY) &&	329	if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short)(((float)op->run_away / 100.f) * (float)op->stats.maxhp))
336	op->stats.hp >= (signed short)(((float)op->run_away/(float)100)*
337	(float)op->stats.maxhp))
338	CLEAR_FLAG(op, FLAG_RUN_AWAY);	330	CLEAR_FLAG (op, FLAG_RUN_AWAY);
339		331
340	if(op->stats.hp>op->stats.maxhp)	332	if (op->stats.hp > op->stats.maxhp)
341	op->stats.hp=op->stats.maxhp;	333	op->stats.hp = op->stats.maxhp;
342	}	334	}
343		335
344	/* generate sp, if applicable */	336	/* generate sp, if applicable */
345	if(op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp) {	337	if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
346		338	{
347	/* last_sp is in funny units. Dividing by speed puts	339	/* last_sp is in funny units. Dividing by speed puts
348	* the regeneration rate on a basis of time instead of	340	* the regeneration rate on a basis of time instead of
349	* #moves the monster makes. The scaling by 8 is	341	* #moves the monster makes. The scaling by 8 is
350	* to capture 8th's of a sp fraction regens	342	* to capture 8th's of a sp fraction regens
351	*	343	*
352	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)	344	* Cast to sint32 before comparing to maxhp since otherwise an (sint16)
353	* overflow might produce monsters with negative sp.	345	* overflow might produce monsters with negative sp.
354	*/	346	*/
355		347
356	op->last_sp+= (int)((float)(8*op->stats.Pow)/FABS(op->speed));	348	op->last_sp += (int) ((float) (8 * op->stats.Pow) / fabsf (op->speed));
357	op->stats.sp = MIN(op->stats.sp+op->last_sp/128, op->stats.maxsp); /* causes Pow/16 sp/tick */	349	op->stats.sp = min (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
358	op->last_sp%=128;	350	op->last_sp %= 128;
359	}	351	}
360		352
361	/* this should probably get modified by many more values.	353	/* this should probably get modified by many more values.
362	* (eg, creatures resistance to fear, level, etc. )	354	* (eg, creatures resistance to fear, level, etc. )
363	*/	355	*/
364	if(QUERY_FLAG(op, FLAG_SCARED) &&!(RANDOM()%20)) {	356	if (QUERY_FLAG (op, FLAG_SCARED) && !(rndm (20)))
365	CLEAR_FLAG(op,FLAG_SCARED); /* Time to regain some "guts"... */	357	CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
366	}
367		358
368	if (INVOKE_OBJECT (MOVE, op, ARG_OBJECT (op->enemy)))//TODO: should go away	359	if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
		360	return QUERY_FLAG (op, FLAG_FREED);
		361
		362	if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
		363	((op->map->darklevel () > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
		364	if (!check_wakeup (op, enemy, &rv))
369	return 0;	365	return 0;
370		366
371	if ( QUERY_FLAG(op, FLAG_SLEEP) || QUERY_FLAG(op, FLAG_BLIND) ||
372	((op->map->darkness>0) && !QUERY_FLAG(op,FLAG_SEE_IN_DARK) &&
373	!QUERY_FLAG(op,FLAG_SEE_INVISIBLE))) {
374	if(!check_wakeup(op,enemy,&rv))
375	return 0;
376	}
377
378	/* check if monster pops out of hidden spot */	367	/* check if monster pops out of hidden spot */
		368	if (op->flag [FLAG_HIDDEN])
379	if(op->hide) do_hidden_move(op);	369	do_hidden_move (op);
380		370
381	if(op->pick_up)	371	if (op->pick_up)
382	monster_check_pickup(op);	372	monster_check_pickup (op);
383		373
384	if(op->will_apply)	374	if (op->will_apply)
385	monster_apply_below(op); /* Check for items to apply below */	375	monster_apply_below (op); /* Check for items to apply below */
386		376
387	/* If we don't have an enemy, do special movement or the like */	377	/* If we don't have an enemy, do special movement or the like */
388	if(!enemy) {	378	if (!enemy)
		379	{
389	if(QUERY_FLAG(op, FLAG_ONLY_ATTACK)) {	380	if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
390	remove_ob(op);	381	{
391	free_object(op);	382	op->drop_and_destroy ();
392	return 1;	383	return 1;
393	}	384	}
394		385
395	/* Probably really a bug for a creature to have both	386	/* Probably really a bug for a creature to have both
396	* stand still and a movement type set.	387	* stand still and a movement type set.
397	*/	388	*/
398	if(!QUERY_FLAG(op, FLAG_STAND_STILL)) {	389	if (!QUERY_FLAG (op, FLAG_STAND_STILL))
		390	{
399	if (op->attack_movement & HI4)	391	if (op->attack_movement & HI4)
400	{	392	{
401	switch (op->attack_movement & HI4) {	393	switch (op->attack_movement & HI4)
		394	{
402	case (PETMOVE):	395	case PETMOVE:
403	pet_move (op);	396	pet_move (op);
404	break;	397	break;
405		398
406	case (CIRCLE1):	399	case CIRCLE1:
407	circ1_move (op);	400	circ1_move (op);
408	break;	401	break;
409		402
410	case (CIRCLE2):	403	case CIRCLE2:
411	circ2_move (op);	404	circ2_move (op);
412	break;	405	break;
413		406
414	case (PACEV):	407	case PACEV:
415	pace_movev(op);	408	pace_movev (op);
416	break;	409	break;
417		410
418	case (PACEH):	411	case PACEH:
419	pace_moveh(op);	412	pace_moveh (op);
420	break;	413	break;
421		414
422	case (PACEV2):	415	case PACEV2:
423	pace2_movev (op);	416	pace2_movev (op);
424	break;	417	break;
425		418
426	case (PACEH2):	419	case PACEH2:
427	pace2_moveh (op);	420	pace2_moveh (op);
428	break;	421	break;
429		422
430	case (RANDO):	423	case RANDO:
431	rand_move (op);	424	rand_move (op);
432	break;	425	break;
433		426
434	case (RANDO2):	427	case RANDO2:
435	move_randomly (op);	428	move_randomly (op);
436	break;	429	break;
437	}	430	}
		431
		432	return 0;
		433	}
		434	else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
		435	move_randomly (op);
		436	} /* stand still */
		437
		438	return 0;
		439	} /* no enemy */
		440
		441	/* We have an enemy. Block immediately below is for pets */
		442	if ((op->attack_movement & HI4) == PETMOVE
		443	&& (owner = op->owner) != NULL
		444	&& !on_same_map (op, owner)
		445	&& !owner->flag [FLAG_REMOVED])
		446	return follow_owner (op, owner);
		447
		448	/* doppleganger code to change monster facing to that of the nearest
		449	* player. Hmm. The code is here, but no monster in the current
		450	* arch set uses it.
		451	*/
		452	if (op->race == shstr_doppleganger)
		453	{
		454	op->face = enemy->face;
		455	op->name = enemy->name;
		456	}
		457
		458	/* Calculate range information for closest body part - this
		459	* is used for the 'skill' code, which isn't that smart when
		460	* it comes to figuring it out - otherwise, giants throw boulders
		461	* into themselves.
		462	*/
		463	get_rangevector (op, enemy, &rv, 0);
		464
		465	/* Move the check for scared up here - if the monster was scared,
		466	* we were not doing any of the logic below, so might as well save
		467	* a few cpu cycles.
		468	*/
		469	if (!QUERY_FLAG (op, FLAG_SCARED))
		470	{
		471	rv_vector rv1;
		472
		473	/* now we test every part of an object .... this is a real ugly piece of code */
		474	for (part = op; part; part = part->more)
		475	{
		476	get_rangevector (part, enemy, &rv1, 0x1);
		477	dir = rv1.direction;
		478
		479	/* hm, not sure about this part - in original was a scared flag here too
		480	* but that we test above... so can be old code here
		481	*/
		482	if (QUERY_FLAG (op, FLAG_RUN_AWAY))
		483	dir = absdir (dir + 4);
		484
		485	if (QUERY_FLAG (op, FLAG_CONFUSED))
		486	dir = absdir (dir + rndm (3) + rndm (3) - 2);
		487
		488	if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(rndm (3)))
		489	if (monster_cast_spell (op, part, enemy, dir, &rv1))
		490	return 0;
		491
		492	if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(rndm (3)))
		493	if (monster_use_scroll (op, part, enemy, dir, &rv1))
		494	return 0;
		495
		496	if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(rndm (3)))
		497	if (monster_use_range (op, part, enemy, dir))
		498	return 0;
		499
		500	if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(rndm (3)))
		501	if (monster_use_skill (op, rv.part, enemy, rv.direction))
		502	return 0;
		503
		504	if (QUERY_FLAG (op, FLAG_READY_BOW) && !(rndm (2)))
		505	if (monster_use_bow (op, part, enemy, dir))
		506	return 0;
		507	} /* for processing of all parts */
		508	} /* If not scared */
		509
		510	part = rv.part;
		511	dir = rv.direction;
		512
		513	// if the enemy is a player, we have los. if los says we
		514	// can directly reach the player, we do not deviate.
		515	// for non-players, we never deviate
		516	if (op->stats.Wis >= 8
		517	&& enemy->contr && enemy->contr->darkness_at (op->map, op->x, op->y) == LOS_BLOCKED)
		518	{
		519	int sdir = 0;
		520	uint32_t &smell = op->ms ().smell;
		521
		522	for (int ndir = 1; ndir <= 8; ++ndir)
		523	{
		524	mapxy pos (op); pos.move (ndir);
		525
		526	if (pos.normalise ())
		527	{
		528	mapspace &ms = pos.ms ();
		529
		530	if (ms.smell > smell)
		531	{
		532	//printf ("%s: found smell, following it, apparently (%d, %d)\n",& op->name,op->ms().smell,ms.smell);//D
		533	if (op->stats.Wis >= 10)
		534	smell = ms.smell - 1; // smarter: tell others
		535
		536	sdir = ndir;
		537
		538	// perturbing the path might let the monster lose track,
		539	// but it will also widen the actual path, spreading information
		540	if (op->stats.Wis >= 15 && !rndm (20)) // even smarter, deviate and spread?
		541	sdir = absdir (sdir + 1 - rndm (2) * 2);
		542	}
		543	}
		544	}
		545
		546	if (sdir)
		547	dir = sdir;
		548	else if (smell)
		549	{
		550	// no better smell found, so assume the player jumped, and erase this smell
		551	//printf ("erasing smell %d\n", op->ms ().smell);//D
		552	unordered_mapwalk (op, -1, -1, 1, 1)
		553	m->at (nx, ny).smell = 0;
		554	}
		555	}
		556
		557	if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
		558	dir = absdir (dir + 4);
		559
		560	if (QUERY_FLAG (op, FLAG_CONFUSED))
		561	dir = absdir (dir + rndm (3) + rndm (3) - 2);
		562
		563	pre_att_dir = dir; /* remember the original direction */
		564
		565	if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
		566	{
		567	switch (op->attack_movement & LO4)
		568	{
		569	case DISTATT:
		570	dir = dist_att (dir, op, enemy, part, &rv);
		571	break;
		572
		573	case RUNATT:
		574	dir = run_att (dir, op, enemy, part, &rv);
		575	break;
		576
		577	case HITRUN:
		578	dir = hitrun_att (dir, op, enemy);
		579	break;
		580
		581	case WAITATT:
		582	dir = wait_att (dir, op, enemy, part, &rv);
		583	break;
		584
		585	case RUSH: /* default - monster normally moves towards player */
		586	case ALLRUN:
		587	break;
		588
		589	case DISTHIT:
		590	dir = disthit_att (dir, op, enemy, part, &rv);
		591	break;
		592
		593	case WAIT2:
		594	dir = wait_att2 (dir, op, enemy, part, &rv);
		595	break;
		596
		597	default:
		598	LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
		599	}
		600	}
		601
		602	if (!dir)
		603	return 0;
		604
		605	if (!QUERY_FLAG (op, FLAG_STAND_STILL))
		606	{
		607	if (move_object (op, dir)) /* Can the monster move directly toward player? */
		608	{
		609	/* elmex: Turn our monster after it moved if it has DISTATT attack */
		610	if ((op->attack_movement & LO4) == DISTATT)
		611	op->direction = pre_att_dir;
		612
		613	return 0;
		614	}
		615
		616	if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
		617	{
		618	/* Try move around corners if !close */
		619	int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || rndm (2)) ? 1 : 2;
		620
		621	for (diff = 1; diff <= maxdiff; diff++)
		622	{
		623	/* try different detours */
		624	int m = 1 - rndm (2) * 2; /* Try left or right first? */
		625
		626	if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
438	return 0;	627	return 0;
439	}	628	}
440	else if (QUERY_FLAG(op,FLAG_RANDOM_MOVE))
441	(void) move_randomly(op);
442
443	} /* stand still */
444	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	}	629	}
576
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 */	630	} /* if monster is not standing still */
591		631
592	/* elmex: Turn our monster after it moved if it has DISTATT attack */	632	/* elmex: Turn our monster after it moved if it has DISTATT attack */
593	if ((op->attack_movement & LO4) == DISTATT)	633	if ((op->attack_movement & LO4) == DISTATT)
594	op->direction = pre_att_dir;	634	op->direction = pre_att_dir;
595		635
596	/*	636	/*
597	* Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random	637	* Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
598	* direction if they can't move away.	638	* direction if they can't move away.
599	*/	639	*/
600	if (!QUERY_FLAG(op, FLAG_ONLY_ATTACK)&&(QUERY_FLAG(op,FLAG_RUN_AWAY)||QUERY_FLAG(op, FLAG_SCARED)))	640	if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
601	if(move_randomly(op))	641	if (move_randomly (op))
602	return 0;	642	return 0;
603		643
604	/*	644	/*
605	* Try giving the monster a new enemy - the player that is closest	645	* 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	646	* to it. In this way, it won't just keep trying to get to a target
607	* that is inaccessible.	647	* that is inaccessible.
608	* This could be more clever - it should go through a list of several	648	* 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	649	* enemies, as it is now, you could perhaps get situations where there
610	* are two players flanking the monster at close distance, but which	650	* 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	651	* 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	652	* the monster could get to - as it is, the monster won't look at that
613	* third one.	653	* third one.
614	*/	654	*/
615	if (!QUERY_FLAG(op, FLAG_FRIENDLY) && enemy == op->enemy)	655	if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
616	{	656	{
617	object *nearest_player = get_nearest_player(op);	657	object *nearest_player = get_nearest_player (op);
		658
618	if (nearest_player && nearest_player != enemy && !can_hit(part,enemy,&rv)) {	659	if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
		660	{
619	op->enemy = NULL;	661	op->enemy = 0;
620	enemy = nearest_player;	662	enemy = nearest_player;
621	}	663	}
622	}	664	}
623		665
624	if(!QUERY_FLAG(op, FLAG_SCARED)&&can_hit(part,enemy,&rv))	666	if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
625	{	667	{
626	/* The adjustement to wc that was here before looked totally bogus -	668	/* The adjustement to wc that was here before looked totally bogus -
627	* since wc can in fact get negative, that would mean by adding	669	* since wc can in fact get negative, that would mean by adding
628	* the current wc, the creature gets better? Instead, just	670	* the current wc, the creature gets better? Instead, just
629	* add a fixed amount - nasty creatures that are runny away should	671	* add a fixed amount - nasty creatures that are runny away should
630	* still be pretty nasty.	672	* still be pretty nasty.
631	*/	673	*/
632	if(QUERY_FLAG(op,FLAG_RUN_AWAY))	674	if (QUERY_FLAG (op, FLAG_RUN_AWAY))
633	{	675	{
634	part->stats.wc+=10;	676	part->stats.wc += 10;
635	(void)skill_attack(enemy,part,0,NULL, NULL);	677	skill_attack (enemy, part, 0, NULL, NULL);
636	part->stats.wc-=10;	678	part->stats.wc -= 10;
637	}	679	}
638	else	680	else
639	(void)skill_attack(enemy,part,0,NULL, NULL);	681	skill_attack (enemy, part, 0, NULL, NULL);
640	} /* if monster is in attack range */	682	} /* if monster is in attack range */
641		683
642	if(QUERY_FLAG(part,FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */	684	if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
643	return 1;	685	return 1;
644		686
645	if(QUERY_FLAG(op, FLAG_ONLY_ATTACK))	687	if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
		688	{
		689	op->drop_and_destroy ();
		690	return 1;
646	{	691	}
647	remove_ob(op);	692
648	free_object(op);	693	return 0;
		694	}
		695
		696	int
		697	can_hit (object *ob1, object *ob2, rv_vector * rv)
		698	{
		699	object *more;
		700	rv_vector rv1;
		701
		702	if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(rndm (3)))
		703	return 0;
		704
		705	if (abs (rv->distance_x) < 2 && abs (rv->distance_y) < 2)
		706	return 1;
		707
		708	/* check all the parts of ob2 - just because we can't get to
		709	* its head doesn't mean we don't want to pound its feet
		710	*/
		711	for (more = ob2->more; more != NULL; more = more->more)
		712	{
		713	get_rangevector (ob1, more, &rv1, 0);
		714	if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
649	return 1;	715	return 1;
650	}	716	}
		717
651	return 0;	718	return 0;
652	}
653	int can_hit(object *ob1,object *ob2, rv_vector *rv) {
654	object *more;
655	rv_vector rv1;
656
657	if(QUERY_FLAG(ob1,FLAG_CONFUSED)&&!(RANDOM()%3))
658	return 0;
659
660	if (abs(rv->distance_x)<2&&abs(rv->distance_y)<2) return 1;
661
662	/* 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
664	*/
665	for (more = ob2->more; more!=NULL; more = more->more) {
666	get_rangevector(ob1, more, &rv1, 0);
667	if (abs(rv1.distance_x)<2&&abs(rv1.distance_y)<2) return 1;
668	}
669	return 0;
670
671	}	719	}
672		720
673	/* Returns 1 is monster should cast spell sp at an enemy	721	/* Returns 1 is monster should cast spell sp at an enemy
674	* Returns 0 if the monster should not cast this spell.	722	* Returns 0 if the monster should not cast this spell.
675	*	723	*
…		…
684	* This could be a lot smarter - if there are few monsters around,	732	* 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,	733	* then disease might not be as bad. Likewise, if the monster is damaged,
686	* the right type of healing spell could be useful.	734	* the right type of healing spell could be useful.
687	*/	735	*/
688		736
		737	static int
689	static int monster_should_cast_spell(object *monster, object *spell_ob)	738	monster_should_cast_spell (object *monster, object *spell_ob)
690	{	739	{
691	if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||	740	if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||
692	spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||	741	spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||
693	spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE ||	742	spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE ||
694	spell_ob->subtype == SP_MAGIC_MISSILE || spell_ob->subtype == SP_SUMMON_GOLEM ||	743	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 ||	744	spell_ob->subtype == SP_MAGIC_WALL || spell_ob->subtype == SP_SUMMON_MONSTER ||
696	spell_ob->subtype == SP_MOVING_BALL || spell_ob->subtype == SP_SWARM ||	745	spell_ob->subtype == SP_MOVING_BALL || spell_ob->subtype == SP_SWARM || spell_ob->subtype == SP_INVISIBLE)
697	spell_ob->subtype == SP_INVISIBLE)
698
699	return 1;
700
701	return 0;	746	return 1;
702	}
703		747
		748	return 0;
		749	}
704		750
705	#define MAX_KNOWN_SPELLS 20	751	#define MAX_KNOWN_SPELLS 20
706		752
707	/* Returns a randomly selected spell. This logic is still	753	/* Returns a randomly selected spell. This logic is still
708	* less than ideal. This code also only seems to deal with	754	* less than ideal. This code also only seems to deal with
709	* wizard spells, as the check is against sp, and not grace.	755	* wizard spells, as the check is against sp, and not grace.
710	* can mosnters know cleric spells?	756	* can mosnters know cleric spells?
711	*/	757	*/
		758	object *
712	object *monster_choose_random_spell(object *monster) {	759	monster_choose_random_spell (object *monster)
		760	{
713	object *altern[MAX_KNOWN_SPELLS];	761	object *altern[MAX_KNOWN_SPELLS];
714	object *tmp;
715	int i=0;	762	int i = 0;
716		763
717	for(tmp=monster->inv;tmp!=NULL;tmp=tmp->below)	764	for (object *tmp = monster->inv; tmp; tmp = tmp->below)
718	if (tmp->type==SPELLBOOK || tmp->type==SPELL) {	765	if (tmp->type == SPELLBOOK || tmp->type == SPELL)
		766	{
719	/* Check and see if it's actually a useful spell.	767	/* Check and see if it's actually a useful spell.
720	* If its a spellbook, the spell is actually the inventory item.	768	* If its a spellbook, the spell is actually the inventory item.
721	* if it is a spell, then it is just the object itself.	769	* if it is a spell, then it is just the object itself.
722	*/	770	*/
723	if (monster_should_cast_spell(monster, (tmp->type==SPELLBOOK)?tmp->inv:tmp)) {	771	if (monster_should_cast_spell (monster, (tmp->type == SPELLBOOK) ? tmp->inv : tmp))
		772	{
724	altern[i++]=tmp;	773	altern [i++] = tmp;
		774
725	if(i==MAX_KNOWN_SPELLS)	775	if (i == MAX_KNOWN_SPELLS)
726	break;	776	break;
727	}	777	}
728	}	778	}
729	if(!i)	779
730	return NULL;	780	return i ? altern [rndm (i)] : 0;
731	return altern[RANDOM()%i];
732	}	781	}
733		782
734	/* This checks to see if the monster should cast a spell/ability.	783	/* 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.	784	* it returns true if the monster casts a spell, 0 if he doesn't.
736	* head is the head of the monster.	785	* head is the head of the monster.
737	* part is the part of the monster we are checking against.	786	* part is the part of the monster we are checking against.
738	* pl is the target.	787	* pl is the target.
739	* dir is the direction to case.	788	* dir is the direction to case.
740	* rv is the vector which describes where the enemy is.	789	* rv is the vector which describes where the enemy is.
741	*/	790	*/
742		791	int
743	int monster_cast_spell(object *head, object *part,object *pl,int dir, rv_vector *rv) {	792	monster_cast_spell (object *head, object *part, object *pl, int dir, rv_vector * rv)
		793	{
744	object *spell_item;	794	object *spell_item;
745	object *owner;	795	object *owner;
746	rv_vector rv1;	796	rv_vector rv1;
747		797
748	/* If you want monsters to cast spells over friends, this spell should	798	/* 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	799	* 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	800	* 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	801	* clear path to the player, the side aspects of the code will still hit
752	* other monsters)	802	* other monsters)
753	*/	803	*/
754	if(!(dir=path_to_player(part,pl,0)))	804	if (!(dir = path_to_player (part, pl, 0)))
755	return 0;	805	return 0;
		806
		807	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
756		808	{
757	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {
758	get_rangevector(head, owner, &rv1, 0x1);	809	get_rangevector (head, owner, &rv1, 0x1);
759	if(dirdiff(dir,rv1.direction) < 2) {	810	if (dirdiff (dir, rv1.direction) < 2)
760	return 0; /* Might hit owner with spell */	811	return 0; /* Might hit owner with spell */
761	}
762	}	812	}
763		813
764	if(QUERY_FLAG(head,FLAG_CONFUSED))	814	if (QUERY_FLAG (head, FLAG_CONFUSED))
765	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	815	dir = absdir (dir + rndm (3) + rndm (3) - 2);
766		816
767	/* If the monster hasn't already chosen a spell, choose one	817	/* 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	818	* 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).	819	* could be different by the time the monster goes again).
770	*/	820	*/
771	if(head->spellitem==NULL) {	821	if (head->spellitem == NULL)
		822	{
772	if((spell_item=monster_choose_random_spell(head))==NULL) {	823	if ((spell_item = monster_choose_random_spell (head)) == NULL)
		824	{
773	LOG(llevMonster,"Turned off spells in %s\n",head->name);	825	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 */	826	CLEAR_FLAG (head, FLAG_CAST_SPELL); /* Will be turned on when picking up book */
775	return 0;	827	return 0;
776	}	828	}
		829
777	if (spell_item->type == SPELLBOOK) {	830	if (spell_item->type == SPELLBOOK)
		831	{
778	if (!spell_item->inv) {	832	if (!spell_item->inv)
		833	{
779	LOG(llevError,"spellbook %s does not contain a spell?\n", spell_item->name);	834	LOG (llevError, "spellbook %s does not contain a spell?\n", &spell_item->name);
780	return 0;	835	return 0;
781	}	836	}
		837
782	spell_item=spell_item->inv;	838	spell_item = spell_item->inv;
783	}	839	}
784	}	840	}
785	else	841	else
786	spell_item=head->spellitem;	842	spell_item = head->spellitem;
787		843
788	if (!spell_item) return 0;	844	if (!spell_item)
		845	return 0;
789		846
790	/* Best guess this is a defensive/healing spell */	847	/* Best guess this is a defensive/healing spell */
791	if (spell_item->range<=1 || spell_item->stats.dam < 0)	848	if (spell_item->range <= 1 || spell_item->stats.dam < 0)
792	dir = 0;	849	dir = 0;
793		850
794	/* Monster doesn't have enough spell-points */	851	/* Monster doesn't have enough spell-points */
795	if(head->stats.sp<SP_level_spellpoint_cost(head,spell_item, SPELL_MANA))	852	if (head->stats.sp < SP_level_spellpoint_cost (head, spell_item, SPELL_MANA))
796	return 0;	853	return 0;
797		854
798	if(head->stats.grace<SP_level_spellpoint_cost(head,spell_item, SPELL_GRACE))	855	if (head->stats.grace < SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE))
799	return 0;	856	return 0;
800		857
801	head->stats.sp-=SP_level_spellpoint_cost(head,spell_item, SPELL_MANA);	858	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);	859	head->stats.grace -= SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE);
803		860
804	/* set this to null, so next time monster will choose something different */	861	/* set this to null, so next time monster will choose something different */
805	head->spellitem = NULL;	862	head->spellitem = NULL;
806		863
807	return cast_spell(part,part,dir, spell_item, NULL);	864	return cast_spell (part, part, dir, spell_item, NULL);
808	}	865	}
809		866
810		867	int
811	int monster_use_scroll(object *head, object *part,object *pl,int dir, rv_vector *rv) {	868	monster_use_scroll (object *head, object *part, object *pl, int dir, rv_vector * rv)
		869	{
812	object *scroll;	870	object *scroll;
813	object *owner;	871	object *owner;
814	rv_vector rv1;	872	rv_vector rv1;
815		873
816	/* If you want monsters to cast spells over friends, this spell should	874	/* 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	875	* 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	876	* 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	877	* clear path to the player, the side aspects of the code will still hit
820	* other monsters)	878	* other monsters)
821	*/	879	*/
822	if(!(dir=path_to_player(part,pl,0)))	880	if (!(dir = path_to_player (part, pl, 0)))
823	return 0;	881	return 0;
		882
		883	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
824		884	{
825	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {
826	get_rangevector(head, owner, &rv1, 0x1);	885	get_rangevector (head, owner, &rv1, 0x1);
827	if(dirdiff(dir,rv1.direction) < 2) {	886	if (dirdiff (dir, rv1.direction) < 2)
828	return 0; /* Might hit owner with spell */
829	}	887	{
		888	return 0; /* Might hit owner with spell */
		889	}
830	}	890	}
831		891
832	if(QUERY_FLAG(head,FLAG_CONFUSED))	892	if (QUERY_FLAG (head, FLAG_CONFUSED))
833	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	893	dir = absdir (dir + rndm (3) + rndm (3) - 2);
834		894
835	for (scroll=head->inv; scroll; scroll=scroll->below)	895	for (scroll = head->inv; scroll; scroll = scroll->below)
836	if (scroll->type == SCROLL && monster_should_cast_spell(head, scroll->inv)) break;	896	if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv))
		897	break;
837		898
838	/* Used up all his scrolls, so nothing do to */	899	/* Used up all his scrolls, so nothing do to */
839	if (!scroll) {	900	if (!scroll)
		901	{
840	CLEAR_FLAG(head, FLAG_READY_SCROLL);	902	CLEAR_FLAG (head, FLAG_READY_SCROLL);
841	return 0;	903	return 0;
842	}	904	}
843		905
844	/* Spell should be cast on caster (ie, heal, strength) */	906	/* Spell should be cast on caster (ie, heal, strength) */
845	if (scroll->inv->range==0)	907	if (scroll->inv->range == 0)
846	dir = 0;	908	dir = 0;
847		909
848	apply_scroll(part, scroll, dir);	910	apply_scroll (part, scroll, dir);
849	return 1;	911	return 1;
850	}	912	}
851		913
852	/* monster_use_skill()-implemented 95-04-28 to allow monster skill use.	914	/* 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	915	* Note that monsters do not need the skills SK_MELEE_WEAPON and
854	* SK_MISSILE_WEAPON to make those respective attacks, if we	916	* SK_MISSILE_WEAPON to make those respective attacks, if we
…		…
857	*	919	*
858	* The skills we are treating here are all but those. -b.t.	920	* The skills we are treating here are all but those. -b.t.
859	*	921	*
860	* At the moment this is only useful for throwing, perhaps for	922	* 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	923	* stealing. TODO: This should be more integrated in the game. -MT, 25.11.01
862	*/	924	*/
863		925	int
864	int monster_use_skill(object *head, object *part, object *pl,int dir) {	926	monster_use_skill (object *head, object *part, object *pl, int dir)
		927	{
865	object *skill, *owner;	928	object *skill, *owner;
866		929
867	if(!(dir=path_to_player(part,pl,0)))	930	if (!(dir = path_to_player (part, pl, 0)))
868	return 0;	931	return 0;
869		932
870	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {	933	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
		934	{
871	int dir2 = find_dir_2(head->x-owner->x, head->y-owner->y);	935	int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
		936
872	if(dirdiff(dir,dir2) < 1)	937	if (dirdiff (dir, dir2) < 1)
873	return 0; /* Might hit owner with skill -thrown rocks for example ?*/	938	return 0; /* Might hit owner with skill -thrown rocks for example ? */
874	}	939	}
		940
875	if(QUERY_FLAG(head,FLAG_CONFUSED))	941	if (QUERY_FLAG (head, FLAG_CONFUSED))
876	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	942	dir = absdir (dir + rndm (3) + rndm (3) - 2);
877		943
878	/* skill selection - monster will use the next unused skill.	944	/* skill selection - monster will use the next unused skill.
879	* well...the following scenario will allow the monster to	945	* well...the following scenario will allow the monster to
880	* toggle between 2 skills. One day it would be nice to make	946	* toggle between 2 skills. One day it would be nice to make
881	* more skills available to monsters.	947	* more skills available to monsters.
882	*/	948	*/
883
884	for(skill=head->inv;skill!=NULL;skill=skill->below)	949	for (skill = head->inv; skill; skill = skill->below)
885	if(skill->type==SKILL && skill!=head->chosen_skill) {	950	if (skill->type == SKILL && skill != head->chosen_skill)
		951	{
886	head->chosen_skill=skill;	952	head->chosen_skill = skill;
887	break;	953	break;
888	}	954	}
889		955
890	if(!skill && !head->chosen_skill) {	956	if (!skill && !head->chosen_skill)
		957	{
891	LOG(llevDebug,"Error: Monster %s (%d) has FLAG_READY_SKILL without skill.\n",	958	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);	959	CLEAR_FLAG (head, FLAG_READY_SKILL);
894	return 0;	960	return 0;
895	}	961	}
		962
896	/* use skill */	963	/* use skill */
897	return do_skill(head, part, head->chosen_skill,dir,NULL);	964	return do_skill (head, part, head->chosen_skill, dir, NULL);
898	}	965	}
899		966
900	/* Monster will use a ranged spell attack. */	967	/* Monster will use a ranged spell attack. */
901		968	int
902	int monster_use_range(object *head,object *part,object *pl,int dir)	969	monster_use_range (object *head, object *part, object *pl, int dir)
903	{	970	{
904	object *wand, *owner;	971	object *wand, *owner;
905	int at_least_one = 0;	972	int at_least_one = 0;
906		973
907	if(!(dir=path_to_player(part,pl,0)))	974	if (!(dir = path_to_player (part, pl, 0)))
908	return 0;	975	return 0;
909		976
910	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {	977	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
		978	{
911	int dir2 = find_dir_2(head->x-owner->x, head->y-owner->y);	979	int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
		980
912	if(dirdiff(dir,dir2) < 2)	981	if (dirdiff (dir, dir2) < 2)
913	return 0; /* Might hit owner with spell */	982	return 0; /* Might hit owner with spell */
914	}	983	}
		984
915	if(QUERY_FLAG(head,FLAG_CONFUSED))	985	if (QUERY_FLAG (head, FLAG_CONFUSED))
916	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	986	dir = absdir (dir + rndm (3) + rndm (3) - 2);
917		987
918	for(wand=head->inv;wand!=NULL;wand=wand->below)	988	for (wand = head->inv; wand; wand = wand->below)
919	{	989	{
920	if (wand->type == WAND)	990	if (wand->type == WAND)
		991	{
		992	/* Found a wand, let's see if it has charges left */
		993	at_least_one = 1;
		994	if (wand->stats.food <= 0)
		995	continue;
		996
		997	cast_spell (head, wand, dir, wand->inv, NULL);
		998
		999	if (!(--wand->stats.food))
921	{	1000	{
922	/* Found a wand, let's see if it has charges left */	1001	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	{	1002	{
931	if ( wand->arch )
932	{
933	CLEAR_FLAG(wand, FLAG_ANIMATE);	1003	CLEAR_FLAG (wand, FLAG_ANIMATE);
934	wand->face = wand->arch->clone.face;	1004	wand->face = wand->arch->face;
935	wand->speed = 0;	1005	wand->set_speed (0);
936	update_ob_speed(wand);
937	}
938	}	1006	}
939	/* Success */
940	return 1;
941	}	1007	}
		1008	/* Success */
		1009	return 1;
		1010	}
942	else if ( wand->type == ROD || wand->type==HORN ) {	1011	else if (wand->type == ROD || wand->type == HORN)
		1012	{
943	/* Found rod/horn, let's use it if possible */	1013	/* Found rod/horn, let's use it if possible */
944	at_least_one = 1;	1014	at_least_one = 1;
945	if( wand->stats.hp < MAX( wand->inv->stats.sp, wand->inv->stats.grace ) )	1015	if (wand->stats.hp < MAX (wand->inv->stats.sp, wand->inv->stats.grace))
946	continue;	1016	continue;
947		1017
948	/* drain charge before casting spell - can be a case where the	1018	/* drain charge before casting spell - can be a case where the
949	* spell destroys the monster, and rod, so if done after, results	1019	* spell destroys the monster, and rod, so if done after, results
950	* in crash.	1020	* in crash.
951	*/	1021	*/
952	drain_rod_charge( wand );	1022	drain_rod_charge (wand);
953	cast_spell( head, wand, dir, wand->inv, NULL );	1023	cast_spell (head, wand, dir, wand->inv, NULL);
954		1024
955	/* Success */	1025	/* Success */
956	return 1;	1026	return 1;
957	}	1027	}
958	}	1028	}
959		1029
960	if ( at_least_one )	1030	if (at_least_one)
961	return 0;	1031	return 0;
962		1032
963	LOG(llevError,"Error: Monster %s (%d) HAS_READY_RANG() without wand/horn/rod.\n",	1033	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);	1034	CLEAR_FLAG (head, FLAG_READY_RANGE);
966	return 0;	1035	return 0;
967	}	1036	}
968		1037
		1038	int
969	int monster_use_bow(object *head, object *part, object *pl, int dir) {	1039	monster_use_bow (object *head, object *part, object *pl, int dir)
		1040	{
970	object *owner;	1041	object *owner;
971		1042
972	if(!(dir=path_to_player(part,pl,0)))	1043	if (!(dir = path_to_player (part, pl, 0)))
973	return 0;	1044	return 0;
		1045
974	if(QUERY_FLAG(head,FLAG_CONFUSED))	1046	if (QUERY_FLAG (head, FLAG_CONFUSED))
975	dir = absdir(dir + RANDOM()%3 + RANDOM()%3 - 2);	1047	dir = absdir (dir + rndm (3) + rndm (3) - 2);
976		1048
977	if(QUERY_FLAG(head,FLAG_FRIENDLY) && (owner = get_owner(head)) != NULL) {	1049	if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
		1050	{
978	int dir2 = find_dir_2(head->x-owner->x, head->y-owner->y);	1051	int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
		1052
979	if(dirdiff(dir,dir2) < 1)	1053	if (dirdiff (dir, dir2) < 1)
980	return 0; /* Might hit owner with arrow */	1054	return 0; /* Might hit owner with arrow */
981	}	1055	}
982		1056
983	/* in server/player.c */	1057	/* in server/player.c */
984	return fire_bow(head, part, NULL, dir, 0, part->x, part->y);	1058	return fire_bow (head, part, NULL, dir, 0, part->x, part->y);
985		1059
986	}	1060	}
987		1061
988	/* Checks if putting on 'item' will make 'who' do more	1062	/* Checks if putting on 'item' will make 'who' do more
989	* damage. This is a very simplistic check - also checking things	1063	* damage. This is a very simplistic check - also checking things
990	* like speed and ac are also relevant.	1064	* like speed and ac are also relevant.
991	*	1065	*
992	* return true if item is a better object.	1066	* return true if item is a better object.
993	*/	1067	*/
994		1068	int
995	int check_good_weapon(object *who, object *item) {	1069	check_good_weapon (object *who, object *item)
		1070	{
996	object *other_weap;	1071	object *other_weap;
997	int val=0, i;	1072	int val = 0, i;
998		1073
999	for(other_weap=who->inv;other_weap!=NULL;other_weap=other_weap->below)	1074	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))	1075	if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED))
1001	break;	1076	break;
1002		1077
1003	if(other_weap==NULL) /* No other weapons */	1078	if (!other_weap) /* No other weapons */
1004	return 1;	1079	return 1;
1005		1080
1006	/* Rather than go through and apply the new one, and see if it is	1081	/* Rather than go through and apply the new one, and see if it is
1007	* better, just do some simple checks	1082	* better, just do some simple checks
1008	* Put some multipliers for things that hvae several effects,	1083	* Put some multipliers for things that hvae several effects,
1009	* eg, magic affects both damage and wc, so it has more weight	1084	* eg, magic affects both damage and wc, so it has more weight
1010	*/	1085	*/
1011		1086
1012	val = item->stats.dam - other_weap->stats.dam;	1087	val = item->stats.dam - other_weap->stats.dam;
1013	val += (item->magic - other_weap->magic) * 3;	1088	val += (item->magic - other_weap->magic) * 3;
1014	/* Monsters don't really get benefits from things like regen rates	1089	/* Monsters don't really get benefits from things like regen rates
1015	* from items. But the bonus for their stats are very important.	1090	* from items. But the bonus for their stats are very important.
1016	*/	1091	*/
1017	for (i=0; i<NUM_STATS; i++)	1092	for (i = 0; i < NUM_STATS; i++)
1018	val += (get_attr_value(&item->stats, i) - get_attr_value(&other_weap->stats, i))*2;	1093	val += item->stats.stat (i) - other_weap->stats.stat (i) * 2;
1019		1094
1020	if (val > 0) return 1;	1095	if (val > 0)
		1096	return 1;
		1097	else
1021	else return 0;	1098	return 0;
1022
1023	}	1099	}
1024		1100
		1101	int
1025	int check_good_armour(object *who, object *item) {	1102	check_good_armour (object *who, object *item)
		1103	{
1026	object *other_armour;	1104	object *other_armour;
1027	int val=0,i;	1105	int val = 0, i;
1028		1106
1029	for (other_armour = who->inv; other_armour != NULL;	1107	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))	1108	if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED))
1032	break;	1109	break;
1033		1110
1034	if (other_armour == NULL) /* No other armour, use the new */	1111	if (other_armour == NULL) /* No other armour, use the new */
1035	return 1;	1112	return 1;
1036		1113
1037	/* Like above function , see which is better */	1114	/* Like above function , see which is better */
1038	val = item->stats.ac - other_armour->stats.ac;	1115	val = item->stats.ac - other_armour->stats.ac;
1039	val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL])/5;	1116	val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL]) / 5;
1040	val += (item->magic - other_armour->magic) * 3;	1117	val += (item->magic - other_armour->magic) * 3;
1041		1118
1042	/* for the other protections, do weigh them very much in the equation -	1119	/* 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	1120	* 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.	1121	* 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	1122	* 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.	1123	* value. If the reverse, then decrease the value of this item some.
1047	*/	1124	*/
1048	for (i=1; i <NROFATTACKS; i++) {	1125	for (i = 1; i < NROFATTACKS; i++)
		1126	{
1049	if (item->resist[i] > other_armour->resist[i]) val++;	1127	if (item->resist[i] > other_armour->resist[i])
		1128	val++;
1050	else if (item->resist[i] < other_armour->resist[i]) val--;	1129	else if (item->resist[i] < other_armour->resist[i])
		1130	val--;
1051	}	1131	}
1052		1132
1053	/* Very few armours have stats, so not much need to worry about those. */	1133	/* Very few armours have stats, so not much need to worry about those. */
1054		1134
1055	if (val > 0) return 1;	1135	if (val > 0)
		1136	return 1;
		1137	else
1056	else return 0;	1138	return 0;
1057
1058	}	1139	}
1059		1140
1060	/*	1141	/*
1061	* monster_check_pickup(): checks for items that monster can pick up.	1142	* monster_check_pickup(): checks for items that monster can pick up.
1062	*	1143	*
…		…
1070	* This function was seen be continueing looping at one point (tmp->below	1151	* 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	1152	* 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	1153	* after we pick everything up, since that function may call others which
1073	* affect stacking on this space.	1154	* affect stacking on this space.
1074	*/	1155	*/
1075		1156	void
1076	void monster_check_pickup(object *monster) {	1157	monster_check_pickup (object *monster)
		1158	{
1077	object *tmp,*next;	1159	object *tmp, *next;
1078	int next_tag;
1079		1160
1080	for(tmp=monster->below;tmp!=NULL;tmp=next) {	1161	for (tmp = monster->below; tmp != NULL; tmp = next)
		1162	{
1081	next=tmp->below;	1163	next = tmp->below;
1082	next_tag = next ? next->count : 0;
1083	if (monster_can_pick(monster,tmp)) {	1164	if (monster_can_pick (monster, tmp))
1084	remove_ob(tmp);	1165	{
		1166	tmp->remove ();
1085	tmp = insert_ob_in_ob(tmp,monster);	1167	tmp = insert_ob_in_ob (tmp, monster);
1086	(void) monster_check_apply(monster,tmp);	1168	(void) monster_check_apply (monster, tmp);
1087	}	1169	}
1088	/* We could try to re-establish the cycling, of the space, but probably	1170	/* We could try to re-establish the cycling, of the space, but probably
1089	* not a big deal to just bail out.	1171	* not a big deal to just bail out.
1090	*/	1172	*/
1091	if (next && was_destroyed(next, next_tag)) return;	1173	if (next && next->destroyed ())
		1174	return;
1092	}	1175	}
1093	}	1176	}
1094		1177
1095	/*	1178	/*
1096	* monster_can_pick(): If the monster is interested in picking up	1179	* monster_can_pick(): If the monster is interested in picking up
1097	* the item, then return 0. Otherwise 0.	1180	* the item, then return 0. Otherwise 0.
1098	* Instead of pick_up, flags for "greed", etc, should be used.	1181	* Instead of pick_up, flags for "greed", etc, should be used.
1099	* I've already utilized flags for bows, wands, rings, etc, etc. -Frank.	1182	* I've already utilized flags for bows, wands, rings, etc, etc. -Frank.
1100	*/	1183	*/
1101		1184	int
1102	int monster_can_pick(object *monster, object *item) {	1185	monster_can_pick (object *monster, object *item)
		1186	{
1103	int flag=0;	1187	int flag = 0;
1104	int i;	1188	int i;
1105		1189
1106	if(!can_pick(monster,item))	1190	if (!can_pick (monster, item))
1107	return 0;	1191	return 0;
1108		1192
1109	if(QUERY_FLAG(item,FLAG_UNPAID))	1193	if (QUERY_FLAG (item, FLAG_UNPAID))
1110	return 0;	1194	return 0;
1111		1195
1112	if (monster->pick_up&64) /* All */	1196	if (monster->pick_up & 64) /* All */
1113	flag=1;	1197	flag = 1;
1114		1198
		1199	else
1115	else switch(item->type) {	1200	switch (item->type)
		1201	{
1116	case MONEY:	1202	case MONEY:
1117	case GEM:	1203	case GEM:
1118	flag=monster->pick_up&2;	1204	flag = monster->pick_up & 2;
1119	break;	1205	break;
1120		1206
1121	case FOOD:	1207	case FOOD:
1122	flag=monster->pick_up&4;	1208	flag = monster->pick_up & 4;
1123	break;	1209	break;
1124		1210
1125	case WEAPON:	1211	case WEAPON:
1126	flag=(monster->pick_up&8)||QUERY_FLAG(monster,FLAG_USE_WEAPON);	1212	flag = (monster->pick_up & 8) || QUERY_FLAG (monster, FLAG_USE_WEAPON);
1127	break;	1213	break;
1128		1214
1129	case ARMOUR:	1215	case ARMOUR:
1130	case SHIELD:	1216	case SHIELD:
1131	case HELMET:	1217	case HELMET:
1132	case BOOTS:	1218	case BOOTS:
1133	case GLOVES:	1219	case GLOVES:
1134	case GIRDLE:	1220	case GIRDLE:
1135	flag=(monster->pick_up&16)||QUERY_FLAG(monster,FLAG_USE_ARMOUR);	1221	flag = (monster->pick_up & 16) || QUERY_FLAG (monster, FLAG_USE_ARMOUR);
1136	break;	1222	break;
1137		1223
1138	case SKILL:	1224	case SKILL:
1139	flag=QUERY_FLAG(monster,FLAG_CAN_USE_SKILL);	1225	flag = QUERY_FLAG (monster, FLAG_CAN_USE_SKILL);
1140	break;	1226	break;
1141		1227
1142	case RING:	1228	case RING:
1143	flag=QUERY_FLAG(monster,FLAG_USE_RING);	1229	flag = QUERY_FLAG (monster, FLAG_USE_RING);
1144	break;	1230	break;
1145		1231
1146	case WAND:	1232	case WAND:
1147	case HORN:	1233	case HORN:
1148	case ROD:	1234	case ROD:
1149	flag=QUERY_FLAG(monster,FLAG_USE_RANGE);	1235	flag = QUERY_FLAG (monster, FLAG_USE_RANGE);
1150	break;	1236	break;
1151		1237
1152	case SPELLBOOK:	1238	case SPELLBOOK:
1153	flag=(monster->arch!=NULL&&QUERY_FLAG((&monster->arch->clone),FLAG_CAST_SPELL));	1239	flag = monster->arch && QUERY_FLAG (monster->arch, FLAG_CAST_SPELL);
1154	break;	1240	break;
1155		1241
1156	case SCROLL:	1242	case SCROLL:
1157	flag = QUERY_FLAG(monster,FLAG_USE_SCROLL);	1243	flag = QUERY_FLAG (monster, FLAG_USE_SCROLL);
1158	break;	1244	break;
1159		1245
1160	case BOW:	1246	case BOW:
1161	case ARROW:	1247	case ARROW:
1162	flag=QUERY_FLAG(monster,FLAG_USE_BOW);	1248	flag = QUERY_FLAG (monster, FLAG_USE_BOW);
1163	break;	1249	break;
1164	}	1250	}
		1251
1165	/* Simplistic check - if the monster has a location to equip it, he will	1252	/* 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	1253	* pick it up. Note that this doesn't handle cases where an item may
1167	* use several locations.	1254	* use several locations.
1168	*/	1255	*/
1169	for (i=0; i < NUM_BODY_LOCATIONS; i++) {	1256	for (i = 0; i < NUM_BODY_LOCATIONS; i++)
1170	if (monster->body_info[i] && item->body_info[i]) {	1257	{
		1258	if (monster->slot[i].info && item->slot[i].info)
		1259	{
1171	flag=1;	1260	flag = 1;
1172	break;	1261	break;
1173	}	1262	}
1174	}	1263	}
1175		1264
1176	if (((!(monster->pick_up&32))&&flag) || ((monster->pick_up&32)&&(!flag)))	1265	if (((!(monster->pick_up & 32)) && flag) || ((monster->pick_up & 32) && (!flag)))
1177	return 1;
1178	return 0;	1266	return 1;
		1267
		1268	return 0;
1179	}	1269	}
1180		1270
1181	/*	1271	/*
1182	* monster_apply_below():	1272	* monster_apply_below():
1183	* Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's	1273	* Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's
1184	* eager to apply things, encounters something apply-able,	1274	* eager to apply things, encounters something apply-able,
1185	* then make him apply it	1275	* then make him apply it
1186	*/	1276	*/
1187		1277	void
1188	void monster_apply_below(object *monster) {	1278	monster_apply_below (object *monster)
		1279	{
1189	object *tmp, *next;	1280	object *tmp, *next;
1190		1281
1191	for(tmp=monster->below;tmp!=NULL;tmp=next) {	1282	for (tmp = monster->below; tmp != NULL; tmp = next)
		1283	{
1192	next=tmp->below;	1284	next = tmp->below;
1193	switch (tmp->type) {	1285	switch (tmp->type)
		1286	{
1194	case CF_HANDLE:	1287	case CF_HANDLE:
1195	case TRIGGER:	1288	case TRIGGER:
1196	if (monster->will_apply&1)	1289	if (monster->will_apply & 1)
1197	manual_apply(monster,tmp,0);	1290	manual_apply (monster, tmp, 0);
1198	break;	1291	break;
1199		1292
1200	case TREASURE:	1293	case TREASURE:
1201	if (monster->will_apply&2)	1294	if (monster->will_apply & 2)
1202	manual_apply(monster,tmp,0);	1295	manual_apply (monster, tmp, 0);
1203	break;	1296	break;
1204		1297
1205	}	1298	}
1206	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))	1299	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1207	break;	1300	break;
1208	}	1301	}
1209	}	1302	}
1210		1303
1211	/*	1304	/*
1212	* monster_check_apply() is meant to be called after an item is	1305	* 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.	1308	* a pointer to that object is returned, so it can be dropped.
1216	* (so that other monsters can pick it up and use it)	1309	* (so that other monsters can pick it up and use it)
1217	* Note that as things are now, monsters never drop something -	1310	* Note that as things are now, monsters never drop something -
1218	* they can pick up all that they can use.	1311	* they can pick up all that they can use.
1219	*/	1312	*/
1220
1221	/* Sept 96, fixed this so skills will be readied -b.t.*/	1313	/* Sept 96, fixed this so skills will be readied -b.t.*/
1222		1314	void
1223	void monster_check_apply(object *mon, object *item) {	1315	monster_check_apply (object *mon, object *item)
1224		1316	{
1225	int flag = 0;	1317	int flag = 0;
1226		1318
1227	if(item->type==SPELLBOOK&&	1319	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))) {	1320	{
1229	SET_FLAG(mon, FLAG_CAST_SPELL);	1321	SET_FLAG (mon, FLAG_CAST_SPELL);
1230	return;	1322	return;
1231	}	1323	}
1232		1324
1233	/* If for some reason, this item is already applied, no more work to do */	1325	/* If for some reason, this item is already applied, no more work to do */
1234	if(QUERY_FLAG(item,FLAG_APPLIED)) return;	1326	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;	1327	return;
1319	}
1320		1328
		1329	/* Might be better not to do this - if the monster can fire a bow,
		1330	* it is possible in his wanderings, he will find one to use. In
		1331	* which case, it would be nice to have ammo for it.
		1332	*/
		1333	if (QUERY_FLAG (mon, FLAG_USE_BOW) && item->type == ARROW)
		1334	{
		1335	/* Check for the right kind of bow */
		1336	object *bow;
		1337
		1338	for (bow = mon->inv; bow; bow = bow->below)
		1339	if (bow->type == BOW && bow->race == item->race)
		1340	{
		1341	SET_FLAG (mon, FLAG_READY_BOW);
		1342	LOG (llevMonster, "Found correct bow for arrows.\n");
		1343	return; /* nothing more to do for arrows */
		1344	}
		1345	}
		1346
		1347	if (item->type == TREASURE && mon->will_apply & WILL_APPLY_TREASURE)
		1348	flag = 1;
		1349	/* Eating food gets hp back */
		1350	else if (item->type == FOOD && mon->will_apply & WILL_APPLY_FOOD)
		1351	flag = 1;
		1352	else if (item->type == SCROLL && QUERY_FLAG (mon, FLAG_USE_SCROLL))
		1353	{
		1354	if (!item->inv)
		1355	LOG (llevDebug, "Monster %d having scroll %d with empty inventory!", mon->count, item->count);
		1356	else if (monster_should_cast_spell (mon, item->inv))
		1357	SET_FLAG (mon, FLAG_READY_SCROLL);
		1358	/* Don't use it right now */
		1359	return;
		1360	}
		1361	else if (item->type == WEAPON)
		1362	flag = check_good_weapon (mon, item);
		1363	else if (item->is_armor ())
		1364	flag = check_good_armour (mon, item);
		1365	/* Should do something more, like make sure this is a better item */
		1366	else if (item->type == RING)
		1367	flag = 1;
		1368	else if (item->type == WAND || item->type == ROD || item->type == HORN)
		1369	{
		1370	/* We never really 'ready' the wand/rod/horn, because that would mean the
		1371	* weapon would get undone.
		1372	*/
		1373	if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
		1374	{
		1375	SET_FLAG (mon, FLAG_READY_RANGE);
		1376	SET_FLAG (item, FLAG_APPLIED);
		1377	}
		1378	return;
		1379	}
		1380	else if (item->type == BOW)
		1381	{
		1382	/* We never really 'ready' the bow, because that would mean the
		1383	* weapon would get undone.
		1384	*/
		1385	if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
		1386	SET_FLAG (mon, FLAG_READY_BOW);
		1387	return;
		1388	}
		1389	else if (item->type == SKILL)
		1390	{
		1391	/*
		1392	* skills are specials: monsters must have the 'FLAG_READY_SKILL' flag set,
		1393	* else they can't use the skill...
		1394	* Skills also don't need to get applied, so return now.
		1395	*/
		1396	SET_FLAG (mon, FLAG_READY_SKILL);
		1397	return;
		1398	}
		1399
		1400	/* if we don't match one of the above types, return now.
		1401	* can_apply_object will say that we can apply things like flesh,
		1402	* bolts, and whatever else, because it only checks against the
		1403	* body_info locations.
		1404	*/
		1405	if (!flag)
		1406	return;
		1407
		1408	/* Check to see if the monster can use this item. If not, no need
		1409	* to do further processing. Note that can_apply_object already checks
		1410	* for the CAN_USE flags.
		1411	*/
		1412	if (can_apply_object (mon, item) & CAN_APPLY_NOT_MASK)
		1413	return;
		1414
		1415	/* should only be applying this item, not unapplying it.
		1416	* also, ignore status of curse so they can take off old armour.
		1417	* monsters have some advantages after all.
		1418	*/
		1419	manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE);
		1420	}
		1421
		1422	void
1321	void npc_call_help(object *op) {	1423	npc_call_help (object *op)
1322	int x,y, mflags;	1424	{
1323	object *npc;	1425	unordered_mapwalk (op, -7, -7, 7, 7)
1324	sint16 sx, sy;	1426	{
1325	mapstruct *m;	1427	mapspace &ms = m->at (nx, ny);
1326		1428
1327	for(x = -3; x < 4; x++)
1328	for(y = -3; y < 4; y++) {
1329	m = op->map;
1330	sx = op->x + x;
1331	sy = op->y + y;
1332	mflags = get_map_flags(m, &m, sx, sy, &sx, &sy);
1333	/* If nothing alive on this space, no need to search the space. */	1429	/* If nothing alive on this space, no need to search the space. */
1334	if ((mflags & P_OUT_OF_MAP) || !(mflags & P_IS_ALIVE))	1430	if (!(ms.flags () & P_IS_ALIVE))
1335	continue;	1431	continue;
1336		1432
1337	for(npc = get_map_ob(m,sx,sy);npc!=NULL;npc=npc->above)	1433	for (object *npc = ms.bot; npc; npc = npc->above)
1338	if(QUERY_FLAG(npc, FLAG_ALIVE)&&QUERY_FLAG(npc, FLAG_UNAGGRESSIVE))	1434	if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1339	npc->enemy = op->enemy;	1435	npc->enemy = op->enemy;
1340	}	1436	}
1341	}	1437	}
1342		1438
1343		1439	int
1344	int dist_att (int dir , object *ob, object *enemy, object *part, rv_vector *rv) {	1440	dist_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
1345		1441	{
1346	if (can_hit(part,enemy,rv))	1442	if (can_hit (part, enemy, rv))
1347	return dir;	1443	return dir;
		1444
1348	if (rv->distance < 10)	1445	if (rv->distance < 10)
1349	return absdir(dir+4);	1446	return absdir (dir + 4);
1350	else if (rv->distance>18)	1447	else if (rv->distance > 18)
1351	return dir;	1448	return dir;
		1449
1352	return 0;	1450	return 0;
1353	}	1451	}
1354		1452
		1453	int
1355	int run_att (int dir, object *ob, object *enemy,object *part, rv_vector *rv) {	1454	run_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
1356		1455	{
1357	if ((can_hit (part,enemy,rv) && ob->move_status <20) || ob->move_status <20) {	1456	if (can_hit (part, enemy, rv))
1358	ob->move_status++;
1359	return (dir);	1457	return dir;
1360	}	1458	else
1361	else if (ob->move_status >20)
1362	ob->move_status = 0;
1363	return absdir (dir+4);	1459	return absdir (dir + 4);
1364	}	1460	}
1365		1461
		1462	int
1366	int hitrun_att (int dir, object *ob,object *enemy) {	1463	hitrun_att (int dir, object *ob, object *enemy)
		1464	{
1367	if (ob->move_status ++ < 25)	1465	if (ob->move_status++ < 25)
1368	return dir;	1466	return dir;
1369	else if (ob->move_status <50)	1467	else if (ob->move_status < 50)
1370	return absdir (dir+4);
1371	else
1372	ob->move_status = 0;
1373	return absdir(dir+4);	1468	return absdir (dir + 4);
1374	}	1469	else
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;	1470	ob->move_status = 0;
		1471
		1472	return absdir (dir + 4);
		1473	}
		1474
		1475	int
		1476	wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
		1477	{
		1478	int inrange = can_hit (part, enemy, rv);
		1479
		1480	if (ob->move_status || inrange)
		1481	ob->move_status++;
		1482
		1483	if (ob->move_status == 0)
		1484	return 0;
		1485	else if (ob->move_status < 10)
		1486	return dir;
		1487	else if (ob->move_status < 15)
		1488	return absdir (dir + 4);
		1489
		1490	ob->move_status = 0;
1390	return 0;	1491	return 0;
1391	}	1492	}
1392		1493
		1494	int
1393	int disthit_att (int dir, object *ob, object *enemy, object *part,rv_vector *rv) {	1495	disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1394		1496	{
1395	/* The logic below here looked plain wrong before. Basically, what should	1497	/* The logic below here looked plain wrong before. Basically, what should
1396	* happen is that if the creatures hp percentage falls below run_away,	1498	* happen is that if the creatures hp percentage falls below run_away,
1397	* the creature should run away (dir+4)	1499	* the creature should run away (dir+4)
1398	* I think its wrong for a creature to have a zero maxhp value, but	1500	* 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	1501	* 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	1502	* server should try to be resilant enough to avoid the problem
1401	*/	1503	*/
1402	if (ob->stats.maxhp && (ob->stats.hp*100)/ob->stats.maxhp < ob->run_away)	1504	if (ob->stats.maxhp && (ob->stats.hp * 100) / ob->stats.maxhp < ob->run_away)
1403	return absdir(dir+4);	1505	return absdir (dir + 4);
		1506
1404	return dist_att (dir,ob,enemy,part,rv);	1507	return dist_att (dir, ob, enemy, part, rv);
1405	}	1508	}
1406		1509
		1510	int
1407	int wait_att2 (int dir, object *ob,object *enemy,object *part, rv_vector *rv) {	1511	wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
		1512	{
1408	if (rv->distance < 9)	1513	if (rv->distance < 9)
1409	return absdir (dir+4);	1514	return absdir (dir + 4);
		1515
1410	return 0;	1516	return 0;
1411	}	1517	}
1412		1518
		1519	void
1413	void circ1_move (object *ob) {	1520	circ1_move (object *ob)
		1521	{
1414	static int circle [12] = {3,3,4,5,5,6,7,7,8,1,1,2};	1522	static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 };
		1523
1415	if(++ob->move_status > 11)	1524	if (++ob->move_status > 11)
1416	ob->move_status = 0;	1525	ob->move_status = 0;
		1526
1417	if (!(move_object(ob,circle[ob->move_status])))	1527	if (!(move_object (ob, circle[ob->move_status])))
1418	(void) move_object(ob,RANDOM()%8+1);	1528	move_object (ob, rndm (8) + 1);
1419	}	1529	}
1420		1530
		1531	void
1421	void circ2_move (object *ob) {	1532	circ2_move (object *ob)
		1533	{
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};	1534	static int circle[20] = { 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 1, 1, 1, 2, 2 };
		1535
1423	if(++ob->move_status > 19)	1536	if (++ob->move_status > 19)
1424	ob->move_status = 0;	1537	ob->move_status = 0;
		1538
1425	if(!(move_object(ob,circle[ob->move_status])))	1539	if (!(move_object (ob, circle[ob->move_status])))
1426	(void) move_object(ob,RANDOM()%8+1);	1540	move_object (ob, rndm (8) + 1);
1427	}	1541	}
1428		1542
		1543	void
1429	void pace_movev(object *ob) {	1544	pace_movev (object *ob)
		1545	{
1430	if (ob->move_status++ > 6)	1546	if (ob->move_status++ > 6)
1431	ob->move_status = 0;	1547	ob->move_status = 0;
		1548
1432	if (ob->move_status < 4)	1549	if (ob->move_status < 4)
1433	(void) move_object (ob,5);	1550	move_object (ob, 5);
1434	else	1551	else
1435	(void) move_object(ob,1);	1552	move_object (ob, 1);
1436	}	1553	}
1437		1554
		1555	void
1438	void pace_moveh (object *ob) {	1556	pace_moveh (object *ob)
		1557	{
1439	if (ob->move_status++ > 6)	1558	if (ob->move_status++ > 6)
1440	ob->move_status = 0;	1559	ob->move_status = 0;
		1560
1441	if (ob->move_status < 4)	1561	if (ob->move_status < 4)
1442	(void) move_object(ob,3);	1562	move_object (ob, 3);
1443	else	1563	else
1444	(void) move_object(ob,7);	1564	move_object (ob, 7);
1445	}	1565	}
1446		1566
		1567	void
1447	void pace2_movev (object *ob) {	1568	pace2_movev (object *ob)
		1569	{
1448	if (ob->move_status ++ > 16)	1570	if (ob->move_status++ > 16)
1449	ob->move_status = 0;	1571	ob->move_status = 0;
		1572
1450	if (ob->move_status <6)	1573	if (ob->move_status < 6)
1451	(void) move_object (ob,5);	1574	move_object (ob, 5);
1452	else if (ob->move_status < 8)	1575	else if (ob->move_status < 8)
1453	return;	1576	return;
1454	else if (ob->move_status <13)	1577	else if (ob->move_status < 13)
1455	(void) move_object (ob,1);	1578	move_object (ob, 1);
		1579	else
1456	else return;	1580	return;
1457	}	1581	}
1458		1582
		1583	void
1459	void pace2_moveh (object *ob) {	1584	pace2_moveh (object *ob)
		1585	{
1460	if (ob->move_status ++ > 16)	1586	if (ob->move_status++ > 16)
1461	ob->move_status = 0;	1587	ob->move_status = 0;
		1588
1462	if (ob->move_status <6)	1589	if (ob->move_status < 6)
1463	(void) move_object (ob,3);	1590	move_object (ob, 3);
1464	else if (ob->move_status < 8)	1591	else if (ob->move_status < 8)
1465	return;	1592	return;
1466	else if (ob->move_status <13)	1593	else if (ob->move_status < 13)
1467	(void) move_object (ob,7);	1594	move_object (ob, 7);
		1595	else
1468	else return;	1596	return;
1469	}	1597	}
1470		1598
		1599	void
1471	void rand_move (object *ob) {	1600	rand_move (object *ob)
1472	int i;	1601	{
1473	if (ob->move_status <1 || ob->move_status >8 ||	1602	if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(rndm (9)))))
1474	!(move_object(ob,ob->move_status|| ! (RANDOM()% 9))))
1475	for (i = 0; i < 5; i++)	1603	for (int i = 0; i < 5; i++)
1476	if (move_object(ob,ob->move_status = RANDOM()%8+1))	1604	if (move_object (ob, ob->move_status = rndm (8) + 1))
1477	return;	1605	return;
1478	}	1606	}
1479		1607
		1608	void
1480	void check_earthwalls(object *op, mapstruct *m, int x, int y) {	1609	check_earthwalls (object *op, maptile *m, int x, int y)
1481	object *tmp;	1610	{
1482	for (tmp = get_map_ob(m, x, y); tmp!=NULL; tmp=tmp->above) {	1611	for (object *tmp = GET_MAP_OB (m, x, y); tmp; tmp = tmp->above)
1483	if (tmp->type == EARTHWALL) {	1612	if (tmp->type == EARTHWALL)
		1613	{
1484	hit_player(tmp,op->stats.dam,op,AT_PHYSICAL,1);	1614	hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1);
1485	return;	1615	return;
1486	}	1616	}
1487	}
1488	}	1617	}
1489		1618
		1619	void
1490	void check_doors(object *op, mapstruct *m, int x, int y) {	1620	check_doors (object *op, maptile *m, int x, int y)
1491	object *tmp;	1621	{
1492	for (tmp = get_map_ob(m, x, y); tmp!=NULL; tmp=tmp->above) {	1622	for (object *tmp = GET_MAP_OB (m, x, y); tmp; tmp = tmp->above)
1493	if (tmp->type == DOOR) {	1623	if (tmp->type == DOOR)
		1624	{
1494	hit_player(tmp,1000,op,AT_PHYSICAL,1);	1625	hit_player (tmp, 1000, op, AT_PHYSICAL, 1);
1495	return;	1626	return;
1496	}	1627	}
1497	}
1498	}	1628	}
1499		1629
1500	/* find_mon_throw_ob() - modeled on find_throw_ob	1630	/* find_mon_throw_ob() - modeled on find_throw_ob
1501	* This is probably overly simplistic as it is now - We want	1631	* This is probably overly simplistic as it is now - We want
1502	* monsters to throw things like chairs and other pieces of	1632	* monsters to throw things like chairs and other pieces of
1503	* furniture, even if they are not good throwable objects.	1633	* furniture, even if they are not good throwable objects.
1504	* Probably better to have the monster throw a throwable object	1634	* Probably better to have the monster throw a throwable object
1505	* first, then throw any non equipped weapon.	1635	* first, then throw any non equipped weapon.
1506	*/	1636	*/
1507		1637	object *
1508	object *find_mon_throw_ob( object *op ) {	1638	find_mon_throw_ob (object *op)
		1639	{
1509	object *tmp = NULL;	1640	object *tmp = NULL;
1510
1511	if(op->head) tmp=op->head; else tmp=op;
1512		1641
		1642	if (op->head)
		1643	tmp = op->head;
		1644	else
		1645	tmp = op;
		1646
1513	/* New throw code: look through the inventory. Grap the first legal is_thrown	1647	/* New throw code: look through the inventory. Grap the first legal is_thrown
1514	* marked item and throw it to the enemy.	1648	* marked item and throw it to the enemy.
1515	*/	1649	*/
1516
1517	for(tmp=op->inv;tmp;tmp=tmp->below) {	1650	for (tmp = op->inv; tmp; tmp = tmp->below)
1518		1651	{
1519	/* Can't throw invisible objects or items that are applied */	1652	/* Can't throw invisible objects or items that are applied */
1520	if(tmp->invisible || QUERY_FLAG(tmp,FLAG_APPLIED)) continue;	1653	if (tmp->invisible || QUERY_FLAG (tmp, FLAG_APPLIED))
		1654	continue;
1521		1655
1522	if(QUERY_FLAG(tmp,FLAG_IS_THROWN))	1656	if (QUERY_FLAG (tmp, FLAG_IS_THROWN))
1523	break;	1657	break;
1524		1658
1525	}	1659	}
1526		1660
1527	#ifdef DEBUG_THROW	1661	#ifdef DEBUG_THROW
1528	LOG(llevDebug,"%s chooses to throw: %s (%d)\n",op->name,	1662	LOG (llevDebug, "%s chooses to throw: %s (%d)\n", op->name, !(tmp) ? "(nothing)" : query_name (tmp), tmp ? tmp->count : -1);
1529	!(tmp)?"(nothing)":query_name(tmp),tmp?tmp->count:-1);
1530	#endif	1663	#endif
1531		1664
1532	return tmp;	1665	return tmp;
1533	}	1666	}
1534		1667
1535	/* determine if we can 'detect' the enemy. Check for walls blocking the	1668	/* determine if we can 'detect' the enemy. Check for walls blocking the
1536	* los. Also, just because its hidden/invisible, we may be sensitive/smart	1669	* los. Also, just because its hidden/invisible, we may be sensitive/smart
1537	* enough (based on Wis & Int) to figure out where the enemy is. -b.t.	1670	* enough (based on Wis & Int) to figure out where the enemy is. -b.t.
…		…
1539	* properly. I also so odd code in place that checked for x distance	1672	* properly. I also so odd code in place that checked for x distance
1540	* OR y distance being within some range - that seemed wrong - both should	1673	* OR y distance being within some range - that seemed wrong - both should
1541	* be within the valid range. MSW 2001-08-05	1674	* be within the valid range. MSW 2001-08-05
1542	* Returns 0 if enemy can not be detected, 1 if it is detected	1675	* Returns 0 if enemy can not be detected, 1 if it is detected
1543	*/	1676	*/
1544		1677	int
1545	int can_detect_enemy (object *op, object *enemy, rv_vector *rv) {	1678	can_detect_enemy (object *op, object *enemy, rv_vector * rv)
1546	int radius = MIN_MON_RADIUS, hide_discovery;	1679	{
1547
1548	/* null detection for any of these condtions always */	1680	/* null detection for any of these condtions always */
1549	if(!op || !enemy || !op->map || !enemy->map)	1681	if (!op || !enemy || !op->map || !enemy->map)
1550	return 0;	1682	return 0;
1551		1683
1552	/* If the monster (op) has no way to get to the enemy, do nothing */	1684	/* If the monster (op) has no way to get to the enemy, do nothing */
1553	if (!on_same_map(op, enemy))	1685	if (!on_same_map (op, enemy))
1554	return 0;	1686	return 0;
1555		1687
1556	get_rangevector(op, enemy, rv, 0);	1688	get_rangevector (op, enemy, rv, 0);
1557		1689
1558	/* Monsters always ignore the DM */	1690	/* Monsters always ignore the DM */
1559	if ( ( op->type != PLAYER ) && QUERY_FLAG( enemy, FLAG_WIZ ) )	1691	if (!op->is_player () && QUERY_FLAG (enemy, FLAG_WIZ))
1560	return 0;	1692	return 0;
1561		1693
1562	/* simple check. Should probably put some range checks in here. */	1694	/* simple check. Should probably put some range checks in here. */
1563	if(can_see_enemy(op,enemy)) return 1;	1695	if (can_see_enemy (op, enemy))
		1696	return 1;
1564		1697
1565	/* The rest of this is for monsters. Players are on their own for	1698	/* The rest of this is for monsters. Players are on their own for
1566	* finding enemies!	1699	* finding enemies!
1567	*/	1700	*/
1568	if(op->type==PLAYER) return 0;	1701	if (op->is_player ())
		1702	return 0;
1569		1703
1570	/* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE	1704	/* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE
1571	* flag (which was already checked) in can_see_enmy (). Lets get out of here	1705	* flag (which was already checked) in can_see_enemy (). Lets get out of here
1572	*/	1706	*/
1573	if(enemy->invisible && (!enemy->contr || (!enemy->contr->tmp_invis && !enemy->contr->hidden)))	1707	if (enemy->invisible && (!enemy->contr || (!enemy->contr->tmp_invis && !enemy->contr->hidden)))
1574	return 0;	1708	return 0;
1575		1709
		1710	int radius = MIN_MON_RADIUS;
		1711
1576	/* use this for invis also */	1712	/* use this for invis also */
1577	hide_discovery = op->stats.Int/5;	1713	int hide_discovery = op->stats.Int / 5;
1578		1714
1579	/* Determine Detection radii */	1715	/* Determine Detection radii */
1580	if(!enemy->hide) /* to detect non-hidden (eg dark/invis enemy) */	1716	if (!enemy->flag [FLAG_HIDDEN]) /* to detect non-hidden (eg dark/invis enemy) */
1581	radius = (op->stats.Wis/5)+1>MIN_MON_RADIUS?(op->stats.Wis/5)+1:MIN_MON_RADIUS;	1717	radius = max (MIN_MON_RADIUS, op->stats.Wis / 3 + 1);
		1718	else
1582	else { /* a level/INT/Dex adjustment for hiding */	1719	{ /* a level/INT/Dex adjustment for hiding */
1583	object *sk_hide;
1584	int bonus = (op->level/2) + (op->stats.Int/5);	1720	int bonus = op->level / 2 + op->stats.Int / 5;
1585		1721
1586	if(enemy->type==PLAYER) {	1722	if (enemy->is_player ())
		1723	{
1587	if((sk_hide = find_skill_by_number(enemy,SK_HIDING)))	1724	if (object *sk_hide = find_skill_by_number (enemy, SK_HIDING))
1588	bonus -= sk_hide->level;	1725	bonus -= sk_hide->level;
1589	else {	1726	else
		1727	{
1590	LOG(llevError,"can_detect_enemy() got hidden player w/o hiding skill!\n");	1728	LOG (llevError, "can_detect_enemy() got hidden player w/o hiding skill!\n");
1591	make_visible(enemy);	1729	make_visible (enemy);
1592	radius=radius<MIN_MON_RADIUS?MIN_MON_RADIUS:radius;	1730	radius = radius < MIN_MON_RADIUS ? MIN_MON_RADIUS : radius;
1593	}	1731	}
1594	}	1732	}
1595	else /* enemy is not a player */	1733	else /* enemy is not a player */
1596	bonus -= enemy->level;	1734	bonus -= enemy->level;
1597		1735
1598	radius += bonus/5;	1736	radius += bonus / 5;
1599	hide_discovery += bonus*5;	1737	hide_discovery += bonus * 5;
1600	} /* else creature has modifiers for hiding */	1738	} /* else creature has modifiers for hiding */
1601		1739
1602	/* Radii stealth adjustment. Only if you are stealthy	1740	/* Radii stealth adjustment. Only if you are stealthy
1603	* will you be able to sneak up closer to creatures */	1741	* will you be able to sneak up closer to creatures */
1604	if(QUERY_FLAG(enemy,FLAG_STEALTH))	1742	if (QUERY_FLAG (enemy, FLAG_STEALTH))
1605	radius = radius/2, hide_discovery = hide_discovery/3;	1743	{
		1744	radius /= 2;
		1745	hide_discovery /= 3;
		1746	}
1606		1747
1607	/* Radii adjustment for enemy standing in the dark */	1748	/* Radii adjustment for enemy standing in the dark */
1608	if(op->map->darkness>0 && !stand_in_light(enemy)) {	1749	if (!stand_in_light (enemy))
		1750	{
1609	/* on dark maps body heat can help indicate location with infravision	1751	/* on dark maps body heat can help indicate location with infravision
1610	* undead don't have body heat, so no benefit detecting them.	1752	* undead don't have body heat, so no benefit detecting them.
1611	*/	1753	*/
1612	if(QUERY_FLAG(op,FLAG_SEE_IN_DARK) && !is_true_undead(enemy))	1754	if (QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !is_true_undead (enemy))
1613	radius += op->map->darkness/2;	1755	radius += op->map->darklevel () / 2;
1614	else	1756	else
1615	radius -= op->map->darkness/2;	1757	radius -= op->map->darklevel () / 2;
1616		1758
1617	/* op next to a monster (and not in complete darkness)	1759	/* op next to a monster (and not in complete darkness)
1618	* the monster should have a chance to see you.	1760	* the monster should have a chance to see you.
1619	*/	1761	*/
1620	if(radius<MIN_MON_RADIUS && op->map->darkness<5 && rv->distance<=1)	1762	if (radius < MIN_MON_RADIUS && op->map->darklevel () < MAX_DARKNESS && rv->distance <= 1)
1621	radius = MIN_MON_RADIUS;	1763	radius = MIN_MON_RADIUS;
1622	} /* if on dark map */	1764	} /* if on dark map */
1623		1765
1624	/* Lets not worry about monsters that have incredible detection	1766	/* Lets not worry about monsters that have incredible detection
1625	* radii, we only need to worry here about things the player can	1767	* radii, we only need to worry here about things the player can
1626	* (potentially) see. This is 13, as that is the maximum size the player	1768	* (potentially) see. This is 13, as that is the maximum size the player
1627	* may have for their map - in that way, creatures at the edge will	1769	* may have for their map - in that way, creatures at the edge will
1628	* do something. Note that the distance field in the	1770	* do something. Note that the distance field in the
1629	* vector is real distance, so in theory this should be 18 to	1771	* vector is real distance, so in theory this should be 18 to
1630	* find that.	1772	* find that.
1631	*/	1773	*/
1632	if(radius>13) radius = 13;	1774	// note that the above reasoning was utter bullshit even at the time it was written
		1775	// we use 25, lets see if we have the cpu time for it
		1776	radius = min (25, radius);
1633		1777
1634	/* Enemy in range! Now test for detection */	1778	/* Enemy in range! Now test for detection */
1635	if ((int) rv->distance <= radius) {	1779	if (rv->distance <= radius)
		1780	{
1636	/* ah, we are within range, detected? take cases */	1781	/* ah, we are within range, detected? take cases */
1637	if(!enemy->invisible) /* enemy in dark squares... are seen! */	1782	if (!enemy->invisible) /* enemy in dark squares... are seen! */
1638	return 1;	1783	return 1;
1639		1784
1640	/* hidden or low-quality invisible */	1785	/* hidden or low-quality invisible */
1641	if(enemy->hide && (rv->distance <= 1) && (RANDOM()%100<=hide_discovery)) {	1786	if (enemy->flag [FLAG_HIDDEN] && rv->distance <= 1 && rndm (100) <= hide_discovery)
		1787	{
1642	make_visible(enemy);	1788	make_visible (enemy);
		1789
1643	/* inform players of new status */	1790	/* inform players of new status */
1644	if(enemy->type==PLAYER && player_can_view(enemy,op))	1791	if (enemy->type == PLAYER && player_can_view (enemy, op))
1645	new_draw_info_format(NDI_UNIQUE,0, enemy,	1792	new_draw_info_format (NDI_UNIQUE, 0, enemy, "You are discovered by %s!", &op->name);
1646	"You are discovered by %s!",op->name);	1793
1647	return 1; /* detected enemy */	1794	return 1; /* detected enemy */
1648	}	1795	}
1649	else if (enemy->invisible) {	1796	else if (enemy->invisible)
		1797	{
1650	/* Change this around - instead of negating the invisible, just	1798	/* Change this around - instead of negating the invisible, just
1651	* return true so that the mosnter that managed to detect you can	1799	* return true so that the monster that managed to detect you can
1652	* do something to you. Decreasing the duration of invisible	1800	* do something to you. Decreasing the duration of invisible
1653	* doesn't make a lot of sense IMO, as a bunch of stupid creatures	1801	* doesn't make a lot of sense IMO, as a bunch of stupid creatures
1654	* can then basically negate the spell. The spell isn't negated -	1802	* can then basically negate the spell. The spell isn't negated -
1655	* they just know where you are!	1803	* they just know where you are!
1656	*/	1804	*/
1657	if ((RANDOM() % 50) <= hide_discovery) {	1805	if (rndm (50) <= hide_discovery)
		1806	{
1658	if (enemy->type == PLAYER) {	1807	if (enemy->type == PLAYER)
1659	new_draw_info_format(NDI_UNIQUE,0, enemy,	1808	new_draw_info_format (NDI_UNIQUE, 0, enemy, "You see %s noticing your position.", query_name (op));
1660	"You see %s noticing your position.", query_name(op));	1809
1661	}
1662	return 1;	1810	return 1;
1663	}	1811	}
1664	}	1812	}
1665	} /* within range */	1813	} /* within range */
1666		1814
1667	/* Wasn't detected above, so still hidden */	1815	/* Wasn't detected above, so still hidden */
1668	return 0;	1816	return 0;
1669	}	1817	}
1670		1818
1671	/* determine if op stands in a lighted square. This is not a very	1819	/* determine if op stands in a lighted square. This is not a very
1672	* intellegent algorithm. For one thing, we ignore los here, SO it	1820	* intelligent algorithm. For one thing, we ignore los here, SO it
1673	* is possible for a bright light to illuminate a player on the	1821	* is possible for a bright light to illuminate a player on the
1674	* other side of a wall (!).	1822	* other side of a wall (!).
1675	*/	1823	*/
1676		1824	int
1677	int stand_in_light( object *op) {	1825	stand_in_light (object *op)
1678	sint16 nx,ny;	1826	{
1679	mapstruct *m;	1827	if (op)
		1828	{
		1829	if (!op->is_on_map ())
		1830	return 0;
1680		1831
		1832	if (op->map->darklevel () <= 0)
		1833	return 1;
1681		1834
1682	if(!op) return 0;
1683	if(op->glow_radius > 0) return 1;	1835	if (op->glow_radius > 0)
		1836	return 1;
1684		1837
1685	if(op->map) {	1838	if (op->map)
1686	int x, y, x1, y1;	1839	unordered_mapwalk (op, -MAX_LIGHT_RADIUS, -MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS)
1687		1840	{
1688
1689
1690	/* Check the spaces with the max light radius to see if any of them	1841	/* Check the spaces with the max light radius to see if any of them
1691	* have lights, and if any of them light the player enough, then return 1.	1842	* have lights, and if any of them light the player enough, then return 1.
1692	*/	1843	*/
1693	for (x = op->x - MAX_LIGHT_RADII; x <= op->x + MAX_LIGHT_RADII; x++) {	1844	int light = m->at (nx, ny).light;
1694	for (y = op->y - MAX_LIGHT_RADII; y <= op->y + MAX_LIGHT_RADII; y++) {
1695	m = op->map;
1696	nx = x;
1697	ny = y;
1698		1845
1699	if (get_map_flags(m, &m, nx, ny, &nx, &ny) & P_OUT_OF_MAP) continue;	1846	if (expect_false (light > 0) && idistance (dx, dy) <= light)
1700		1847	return 1;
1701	x1 = abs(x - op->x)*abs(x - op->x);
1702	y1 = abs(y - op->y)*abs(y - op->y);
1703	if (isqrt(x1 + y1) < GET_MAP_LIGHT(m, nx, ny)) return 1;
1704	}	1848	}
1705	}
1706	}	1849	}
		1850
1707	return 0;	1851	return 0;
1708	}	1852	}
1709
1710		1853
1711	/* assuming no walls/barriers, lets check to see if its *possible*	1854	/* assuming no walls/barriers, lets check to see if its *possible*
1712	* to see an enemy. Note, "detection" is different from "seeing".	1855	* to see an enemy. Note, "detection" is different from "seeing".
1713	* See can_detect_enemy() for more details. -b.t.	1856	* See can_detect_enemy() for more details. -b.t.
1714	* return 0 if can't be seen, 1 if can be	1857	* return 0 if can't be seen, 1 if can be
1715	*/	1858	*/
1716		1859	int
1717	int can_see_enemy (object *op, object *enemy) {	1860	can_see_enemy (object *op, object *enemy)
		1861	{
1718	object *looker = op->head?op->head:op;	1862	object *looker = op->head ? op->head : op;
1719		1863
1720	/* safety */	1864	/* safety */
1721	if(!looker||!enemy||!QUERY_FLAG(looker,FLAG_ALIVE))	1865	if (!looker || !enemy || !QUERY_FLAG (looker, FLAG_ALIVE))
1722	return 0;	1866	return 0;
1723		1867
1724	/* we dont give a full treatment of xrays here (shorter range than normal,	1868	/* we dont give a full treatment of xrays here (shorter range than normal,
1725	* see through walls). Should we change the code elsewhere to make you	1869	* see through walls). Should we change the code elsewhere to make you
1726	* blind even if you can xray?	1870	* blind even if you can xray?
1727	*/	1871	*/
1728	if(QUERY_FLAG(looker,FLAG_BLIND) && !QUERY_FLAG(looker,FLAG_XRAYS))	1872	if (QUERY_FLAG (looker, FLAG_BLIND) && !QUERY_FLAG (looker, FLAG_XRAYS))
1729	return 0;	1873	return 0;
1730		1874
1731	/* checking for invisible things */	1875	/* checking for invisible things */
1732	if(enemy->invisible) {	1876	if (enemy->invisible)
		1877	{
1733	/* HIDDEN ENEMY. by definition, you can't see hidden stuff!	1878	/* HIDDEN ENEMY. by definition, you can't see hidden stuff!
1734	* However,if you carry any source of light, then the hidden	1879	* However,if you carry any source of light, then the hidden
1735	* creature is seeable (and stupid) */	1880	* creature is seeable (and stupid) */
1736		1881
1737	if(has_carried_lights(enemy)) {	1882	if (enemy->has_carried_lights ())
1738	if(enemy->hide) {	1883	{
		1884	if (enemy->flag [FLAG_HIDDEN])
		1885	{
1739	make_visible(enemy);	1886	make_visible (enemy);
1740	new_draw_info(NDI_UNIQUE,0, enemy,	1887	new_draw_info (NDI_UNIQUE, 0, enemy, "Your light reveals your hiding spot!");
1741	"Your light reveals your hiding spot!");
1742	}	1888	}
		1889
1743	return 1;	1890	return 1;
1744	} else if (enemy->hide) return 0;	1891	}
		1892	else if (enemy->flag [FLAG_HIDDEN])
		1893	return 0;
1745		1894
1746	/* Invisible enemy. Break apart the check for invis undead/invis looker	1895	/* Invisible enemy. Break apart the check for invis undead/invis looker
1747	* into more simple checks - the QUERY_FLAG doesn't return 1/0 values,	1896	* into more simple checks - the QUERY_FLAG doesn't return 1/0 values,
1748	* and making it a conditional makes the code pretty ugly.	1897	* and making it a conditional makes the code pretty ugly.
1749	*/	1898	*/
1750	if (!QUERY_FLAG(looker,FLAG_SEE_INVISIBLE)) {	1899	if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE))
1751	if (makes_invisible_to(enemy, looker)) return 0;	1900	if (makes_invisible_to (enemy, looker))
1752	}	1901	return 0;
		1902	}
1753	} else if(looker->type==PLAYER) /* for players, a (possible) shortcut */	1903	else if (looker->is_player ()) /* for players, a (possible) shortcut */
1754	if(player_can_view(looker,enemy)) return 1;	1904	if (player_can_view (looker, enemy))
		1905	return 1;
1755		1906
1756	/* ENEMY IN DARK MAP. Without infravision, the enemy is not seen	1907	/* ENEMY IN DARK MAP. Without infravision, the enemy is not seen
1757	* unless they carry a light or stand in light. Darkness doesnt	1908	* unless they carry a light or stand in light. Darkness doesnt
1758	* inhibit the undead per se (but we should give their archs	1909	* inhibit the undead per se (but we should give their archs
1759	* CAN_SEE_IN_DARK, this is just a safety	1910	* CAN_SEE_IN_DARK, this is just a safety
1760	* we care about the enemy maps status, not the looker.	1911	* we care about the enemy maps status, not the looker.
1761	* only relevant for tiled maps, but it is possible that the	1912	* only relevant for tiled maps, but it is possible that the
1762	* enemy is on a bright map and the looker on a dark - in that	1913	* enemy is on a bright map and the looker on a dark - in that
1763	* case, the looker can still see the enemy	1914	* case, the looker can still see the enemy
1764	*/	1915	*/
1765	if(enemy->map->darkness>0&&!stand_in_light(enemy)	1916	if (!stand_in_light (enemy)
1766	&&(!QUERY_FLAG(looker,FLAG_SEE_IN_DARK)||	1917	&& (!QUERY_FLAG (looker, FLAG_SEE_IN_DARK) || !is_true_undead (looker) || !QUERY_FLAG (looker, FLAG_XRAYS)))
1767	!is_true_undead(looker)||!QUERY_FLAG(looker,FLAG_XRAYS)))
1768	return 0;	1918	return 0;
1769		1919
1770	return 1;	1920	return 1;
1771	}	1921	}
1772		1922

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