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Comparing deliantra/server/server/monster.C (file contents):
Revision 1.9 by root, Thu Sep 14 17:10:25 2006 UTC vs.
Revision 1.76 by root, Sun Nov 29 09:41:28 2009 UTC

1
2/* 1/*
3 * static char *rcsid_monster_c = 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
4 * "$Id: monster.C,v 1.9 2006/09/14 17:10:25 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 it under
9 * the terms of the Affero GNU General Public License as published by the
10 * Free Software Foundation, either version 3 of the License, or (at your
11 * 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 Affero GNU General Public License
19 * and the GNU General Public License along with this program. If not, see
20 * <http://www.gnu.org/licenses/>.
21 *
22 * The authors can be reached via e-mail to <support@deliantra.net>
5 */ 23 */
6 24
7/* 25//+GPL
8 CrossFire, A Multiplayer game for X-windows
9
10 Copyright (C) 2002 Mark Wedel & Crossfire Development Team
11 Copyright (C) 1992 Frank Tore Johansen
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26
27 The authors can be reached via e-mail at crossfire-devel@real-time.com
28*/
29 26
30#include <global.h> 27#include <global.h>
31#ifndef __CEXTRACT__
32# include <sproto.h> 28#include <sproto.h>
33# include <spells.h> 29#include <spells.h>
34# include <skills.h> 30#include <skills.h>
35#endif
36
37 31
38#define MIN_MON_RADIUS 3 /* minimum monster detection radius */ 32#define MIN_MON_RADIUS 3 /* minimum monster detection radius */
39
40 33
41/* checks npc->enemy and returns that enemy if still valid, 34/* checks npc->enemy and returns that enemy if still valid,
42 * NULL otherwise. 35 * NULL otherwise.
43 * this is map tile aware. 36 * this is map tile aware.
44 * If this returns an enemy, the range vector rv should also be 37 * If this returns an enemy, the range vector rv should also be
45 * set to sane values. 38 * set to sane values.
46 */ 39 */
47object * 40object *
48check_enemy (object *npc, rv_vector * rv) 41check_enemy (object *npc, rv_vector * rv)
49{ 42{
50
51 /* if this is pet, let him attack the same enemy as his owner 43 /* if this is pet, let him attack the same enemy as his owner
52 * TODO: when there is no ower enemy, try to find a target, 44 * TODO: when there is no ower enemy, try to find a target,
53 * which CAN attack the owner. */ 45 * which CAN attack the owner. */
54 if ((npc->attack_movement & HI4) == PETMOVE) 46 if ((npc->attack_movement & HI4) == PETMOVE)
55 { 47 {
… …
57 npc->enemy = NULL; 49 npc->enemy = NULL;
58 else if (npc->enemy == NULL) 50 else if (npc->enemy == NULL)
59 npc->enemy = npc->owner->enemy; 51 npc->enemy = npc->owner->enemy;
60 } 52 }
61 53
62 /* periodically, a monster mayu change its target. Also, if the object 54 /* periodically, a monster may change its target. Also, if the object
63 * has been destroyed, etc, clear the enemy. 55 * has been destroyed, etc, clear the enemy.
64 * TODO: this should be changed, because it invokes to attack forced or 56 * TODO: this should be changed, because it invokes to attack forced or
65 * attacked monsters to leave the attacker alone, before it is destroyed 57 * attacked monsters to leave the attacker alone, before it is destroyed
66 */ 58 */
67 /* i had removed the random target leave, this invokes problems with friendly 59 /* I had removed the random target leave, this invokes problems with friendly
68 * objects, getting attacked and defending herself - they don't try to attack 60 * objects, getting attacked and defending herself - they don't try to attack
69 * again then but perhaps get attack on and on 61 * again then but perhaps get attack on and on
70 * If we include a aggravated flag in , we can handle evil vs evil and good vs good 62 * If we include a aggravated flag in , we can handle evil vs evil and good vs good
71 * too. */ 63 * too. */
72 64
… …
76 * the grouping checks are. Code is the same. 68 * the grouping checks are. Code is the same.
77 */ 69 */
78 if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) || 70 if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) ||
79 QUERY_FLAG (npc->enemy, FLAG_FREED) || 71 QUERY_FLAG (npc->enemy, FLAG_FREED) ||
80 !on_same_map (npc, npc->enemy) || npc == npc->enemy || QUERY_FLAG (npc, FLAG_NEUTRAL) || QUERY_FLAG (npc->enemy, FLAG_NEUTRAL)) 72 !on_same_map (npc, npc->enemy) || npc == npc->enemy || QUERY_FLAG (npc, FLAG_NEUTRAL) || QUERY_FLAG (npc->enemy, FLAG_NEUTRAL))
81 npc->enemy = NULL; 73 npc->enemy = 0;
82 74
83 else if (QUERY_FLAG (npc, FLAG_FRIENDLY) && ((QUERY_FLAG (npc->enemy, FLAG_FRIENDLY) 75 else if (QUERY_FLAG (npc, FLAG_FRIENDLY) && ((QUERY_FLAG (npc->enemy, FLAG_FRIENDLY)
84 && !(should_arena_attack (npc, npc->owner, npc->enemy))) 76 && !(should_arena_attack (npc, npc->owner, npc->enemy)))
85 || ((npc->enemy->type == PLAYER) && !(should_arena_attack (npc, npc->owner, npc->enemy))) 77 || ((npc->enemy->type == PLAYER) && !(should_arena_attack (npc, npc->owner, npc->enemy)))
86 || npc->enemy == npc->owner)) 78 || npc->enemy == npc->owner))
87 npc->enemy = NULL; 79 npc->enemy = 0;
88 80
89 81
90 else if (!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (npc->enemy, FLAG_FRIENDLY) && npc->enemy->type != PLAYER)) 82 else if (!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (npc->enemy, FLAG_FRIENDLY) && npc->enemy->type != PLAYER))
91 npc->enemy = NULL; 83 npc->enemy = 0;
92 84
93 /* I've noticed that pets could sometimes get an arrow as the 85 /* I've noticed that pets could sometimes get an arrow as the
94 * target enemy - this code below makes sure the enemy is something 86 * target enemy - this code below makes sure the enemy is something
95 * that should be attacked. My guess is that the arrow hits 87 * that should be attacked. My guess is that the arrow hits
96 * the creature/owner, and so the creature then takes that 88 * the creature/owner, and so the creature then takes that
97 * as the enemy to attack. 89 * as the enemy to attack.
98 */ 90 */
99 else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER) && 91 else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER)
100 !QUERY_FLAG (npc->enemy, FLAG_GENERATOR) && npc->enemy->type != PLAYER && npc->enemy->type != GOLEM) 92 && !QUERY_FLAG (npc->enemy, FLAG_GENERATOR)
93 && npc->enemy->type != PLAYER
94 && npc->enemy->type != GOLEM)
101 npc->enemy = NULL; 95 npc->enemy = 0;
102
103 } 96 }
97
104 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : NULL; 98 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : 0;
105} 99}
106 100
107/* Returns the nearest living creature (monster or generator). 101/* Returns the nearest living creature (monster or generator).
108 * Modified to deal with tiled maps properly. 102 * Modified to deal with tiled maps properly.
109 * Also fixed logic so that monsters in the lower directions were more 103 * Also fixed logic so that monsters in the lower directions were more
… …
121object * 115object *
122find_nearest_living_creature (object *npc) 116find_nearest_living_creature (object *npc)
123{ 117{
124 int i, mflags; 118 int i, mflags;
125 sint16 nx, ny; 119 sint16 nx, ny;
126 mapstruct *m; 120 maptile *m;
127 object *tmp;
128 int search_arr[SIZEOFFREE]; 121 int search_arr[SIZEOFFREE];
129 122
130 get_search_arr (search_arr); 123 get_search_arr (search_arr);
124
131 for (i = 0; i < SIZEOFFREE; i++) 125 for (i = 0; i < SIZEOFFREE; i++)
132 { 126 {
133 /* modified to implement smart searching using search_arr 127 /* modified to implement smart searching using search_arr
134 * guidance array to determine direction of search order 128 * guidance array to determine direction of search order
135 */ 129 */
136 nx = npc->x + freearr_x[search_arr[i]]; 130 nx = npc->x + freearr_x[search_arr[i]];
137 ny = npc->y + freearr_y[search_arr[i]]; 131 ny = npc->y + freearr_y[search_arr[i]];
138 m = npc->map; 132 m = npc->map;
139 133
140 mflags = get_map_flags (m, &m, nx, ny, &nx, &ny); 134 mflags = get_map_flags (m, &m, nx, ny, &nx, &ny);
135
141 if (mflags & P_OUT_OF_MAP) 136 if (mflags & P_OUT_OF_MAP)
142 continue; 137 continue;
143 138
144 if (mflags & P_IS_ALIVE) 139 if (mflags & P_IS_ALIVE)
145 { 140 {
146 tmp = get_map_ob (m, nx, ny); 141 for (object *tmp = m->at (nx, ny).top; tmp; tmp = tmp->below)
147 while (tmp != NULL && !QUERY_FLAG (tmp, FLAG_MONSTER) && !QUERY_FLAG (tmp, FLAG_GENERATOR) && tmp->type != PLAYER) 142 if (tmp->flag [FLAG_MONSTER] || tmp->flag [FLAG_GENERATOR] || tmp->type == PLAYER)
148 tmp = tmp->above;
149
150 if (!tmp)
151 {
152 LOG (llevDebug, "find_nearest_living_creature: map %s (%d,%d) has is_alive set but did not find a monster?\n",
153 m->path, nx, ny);
154 }
155 else
156 {
157 if (can_see_monsterP (m, nx, ny, i)) 143 if (can_see_monsterP (m, nx, ny, i))
158 return tmp; 144 return tmp;
159 } 145 }
160 } /* is something living on this space */
161 } 146 }
162 return NULL; /* nothing found */
163}
164 147
148 return 0;
149}
165 150
166/* Tries to find an enmy for npc. We pass the range vector since 151/* Tries to find an enemy for npc. We pass the range vector since
167 * our caller will find the information useful. 152 * our caller will find the information useful.
168 * Currently, only move_monster calls this function. 153 * Currently, only move_monster calls this function.
169 * Fix function so that we always make calls to get_rangevector 154 * Fix function so that we always make calls to get_rangevector
170 * if we have a valid target - function as not doing so in 155 * if we have a valid target - function as not doing so in
171 * many cases. 156 * many cases.
172 */ 157 */
173 158static object *
174object *
175find_enemy (object *npc, rv_vector * rv) 159find_enemy (object *npc, rv_vector * rv)
176{ 160{
177 object *attacker, *tmp = NULL; 161 object *attacker, *tmp = NULL;
178 162
179 attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */ 163 attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */
… …
184 { 168 {
185 tmp = find_nearest_living_creature (npc); 169 tmp = find_nearest_living_creature (npc);
186 170
187 if (tmp) 171 if (tmp)
188 get_rangevector (npc, tmp, rv, 0); 172 get_rangevector (npc, tmp, rv, 0);
173
189 return tmp; 174 return tmp;
190 } 175 }
191 176
192 /* Here is the main enemy selection. 177 /* Here is the main enemy selection.
193 * We want this: if there is an enemy, attack him until its not possible or 178 * We want this: if there is an enemy, attack him until its not possible or
… …
213 /* we check our old enemy. */ 198 /* we check our old enemy. */
214 if (!(tmp = check_enemy (npc, rv))) 199 if (!(tmp = check_enemy (npc, rv)))
215 { 200 {
216 if (attacker) /* if we have an attacker, check him */ 201 if (attacker) /* if we have an attacker, check him */
217 { 202 {
218 /* TODO: thats not finished */ 203 /* TODO: that's not finished */
219 /* we don't want a fight evil vs evil or good against non evil */ 204 /* we don't want a fight evil vs evil or good against non evil */
220 205
221 if (QUERY_FLAG (npc, FLAG_NEUTRAL) || QUERY_FLAG (attacker, FLAG_NEUTRAL) || /* neutral */ 206 if (QUERY_FLAG (npc, FLAG_NEUTRAL) || QUERY_FLAG (attacker, FLAG_NEUTRAL) || /* neutral */
222 (QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) || 207 (QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) ||
223 (!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (attacker, FLAG_FRIENDLY) && attacker->type != PLAYER))) 208 (!QUERY_FLAG (npc, FLAG_FRIENDLY) && (!QUERY_FLAG (attacker, FLAG_FRIENDLY) && attacker->type != PLAYER)))
224 CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */ 209 CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */
225 else if (on_same_map (npc, attacker)) /* thats the only thing we must know... */ 210 else if (on_same_map (npc, attacker)) /* that's the only thing we must know... */
226 { 211 {
227 CLEAR_FLAG (npc, FLAG_SLEEP); /* well, NOW we really should wake up! */ 212 CLEAR_FLAG (npc, FLAG_SLEEP); /* well, NOW we really should wake up! */
228 npc->enemy = attacker; 213 npc->enemy = attacker;
229 return attacker; /* yes, we face our attacker! */ 214 return attacker; /* yes, we face our attacker! */
230 } 215 }
… …
246/* Sees if this monster should wake up. 231/* Sees if this monster should wake up.
247 * Currently, this is only called from move_monster, and 232 * Currently, this is only called from move_monster, and
248 * if enemy is set, then so should be rv. 233 * if enemy is set, then so should be rv.
249 * returns 1 if the monster should wake up, 0 otherwise. 234 * returns 1 if the monster should wake up, 0 otherwise.
250 */ 235 */
251 236static int
252int
253check_wakeup (object *op, object *enemy, rv_vector * rv) 237check_wakeup (object *op, object *enemy, rv_vector *rv)
254{ 238{
255 int radius = op->stats.Wis > MIN_MON_RADIUS ? op->stats.Wis : MIN_MON_RADIUS;
256
257 /* Trim work - if no enemy, no need to do anything below */ 239 /* Trim work - if no enemy, no need to do anything below */
258 if (!enemy) 240 if (!enemy)
259 return 0; 241 return 0;
260 242
243 if (!op->flag [FLAG_SLEEP])
244 return 1;
245
246 int radius = max (op->stats.Wis, MIN_MON_RADIUS);
247
248 if (op->flag [FLAG_BLIND])
261 /* blinded monsters can only find nearby objects to attack */ 249 /* blinded monsters can only find nearby objects to attack */
262 if (QUERY_FLAG (op, FLAG_BLIND))
263 radius = MIN_MON_RADIUS; 250 radius = MIN_MON_RADIUS;
264 251 else if (op->map
252 && !enemy->invisible
253 && !stand_in_light (enemy)
254 && (!op->flag[FLAG_SEE_IN_DARK] || !op->flag [FLAG_SEE_INVISIBLE]))
265 /* This covers the situation where the monster is in the dark 255 /* This covers the situation where the monster is in the dark
266 * and has an enemy. If the enemy has no carried light (or isnt 256 * and has an enemy. If the enemy has no carried light (or isnt
267 * glowing!) then the monster has trouble finding the enemy. 257 * glowing!) then the monster has trouble finding the enemy.
268 * Remember we already checked to see if the monster can see in 258 * Remember we already checked to see if the monster can see in
269 * the dark. */ 259 * the dark. */
260 radius = min (radius, MIN_MON_RADIUS + MAX_DARKNESS - op->map->darklevel ());
270 261
271 else if (op->map && op->map->darkness > 0 && enemy && !enemy->invisible && 262 if (enemy->flag [FLAG_STEALTH])
272 !stand_in_light (enemy) && (!QUERY_FLAG (op, FLAG_SEE_IN_DARK) || !QUERY_FLAG (op, FLAG_SEE_INVISIBLE))) 263 radius = radius / 2 + 1;
273 {
274 int dark = radius / (op->map->darkness);
275
276 radius = (dark > MIN_MON_RADIUS) ? (dark + 1) : MIN_MON_RADIUS;
277 }
278 else if (!QUERY_FLAG (op, FLAG_SLEEP))
279 return 1;
280 264
281 /* enemy should already be on this map, so don't really need to check 265 /* enemy should already be on this map, so don't really need to check
282 * for that. 266 * for that.
283 */ 267 */
284 if (rv->distance < (unsigned int) (QUERY_FLAG (enemy, FLAG_STEALTH) ? (radius / 2) + 1 : radius)) 268 if (rv->distance <= radius)
285 { 269 {
286 CLEAR_FLAG (op, FLAG_SLEEP); 270 CLEAR_FLAG (op, FLAG_SLEEP);
287 return 1; 271 return 1;
288 } 272 }
273
289 return 0; 274 return 0;
290} 275}
291 276
292int 277static int
293move_randomly (object *op) 278move_randomly (object *op)
294{ 279{
280 /* Give up to 15 chances for a monster to move randomly */
281 for (int i = 0; i < 15; i++)
282 if (move_object (op, rndm (8) + 1))
283 return 1;
284
285 return 0;
286}
287
288/*
289 * monster_can_pick(): If the monster is interested in picking up
290 * the item, then return 0. Otherwise 0.
291 * Instead of pick_up, flags for "greed", etc, should be used.
292 * I've already utilized flags for bows, wands, rings, etc, etc. -Frank.
293 */
294static int
295monster_can_pick (object *monster, object *item)
296{
297 int flag = 0;
295 int i; 298 int i;
296 299
297 /* Give up to 15 chances for a monster to move randomly */ 300 if (!can_pick (monster, item))
298 for (i = 0; i < 15; i++) 301 return 0;
302
303 if (QUERY_FLAG (item, FLAG_UNPAID))
304 return 0;
305
306 if (monster->pick_up & 64) /* All */
307 flag = 1;
308
309 else
310 switch (item->type)
299 { 311 {
300 if (move_object (op, RANDOM () % 8 + 1)) 312 case MONEY:
313 case GEM:
314 flag = monster->pick_up & 2;
315 break;
316
317 case FOOD:
318 flag = monster->pick_up & 4;
319 break;
320
321 case WEAPON:
322 flag = (monster->pick_up & 8) || QUERY_FLAG (monster, FLAG_USE_WEAPON);
323 break;
324
325 case ARMOUR:
326 case SHIELD:
327 case HELMET:
328 case BOOTS:
329 case GLOVES:
330 case GIRDLE:
331 flag = (monster->pick_up & 16) || QUERY_FLAG (monster, FLAG_USE_ARMOUR);
332 break;
333
334 case SKILL:
335 flag = QUERY_FLAG (monster, FLAG_CAN_USE_SKILL);
336 break;
337
338 case RING:
339 flag = QUERY_FLAG (monster, FLAG_USE_RING);
340 break;
341
342 case WAND:
343 case HORN:
344 case ROD:
345 flag = QUERY_FLAG (monster, FLAG_USE_RANGE);
346 break;
347
348 case SPELLBOOK:
349 flag = monster->arch && QUERY_FLAG (monster->arch, FLAG_CAST_SPELL);
350 break;
351
352 case SCROLL:
353 flag = QUERY_FLAG (monster, FLAG_USE_SCROLL);
354 break;
355
356 case BOW:
357 case ARROW:
358 flag = QUERY_FLAG (monster, FLAG_USE_BOW);
359 break;
360 }
361
362 /* Simplistic check - if the monster has a location to equip it, he will
363 * pick it up. Note that this doesn't handle cases where an item may
364 * use several locations.
365 */
366 for (i = 0; i < NUM_BODY_LOCATIONS; i++)
367 {
368 if (monster->slot[i].info && item->slot[i].info)
369 {
370 flag = 1;
371 break;
372 }
373 }
374
375 if (((!(monster->pick_up & 32)) && flag) || ((monster->pick_up & 32) && (!flag)))
301 return 1; 376 return 1;
302 } 377
303 return 0; 378 return 0;
304} 379}
305 380
306/* 381/*
307 * Move-monster returns 1 if the object has been freed, otherwise 0. 382 * monster_check_pickup(): checks for items that monster can pick up.
383 *
384 * Vick's (vick@bern.docs.uu.se) fix 921030 for the sweeper blob.
385 * Each time the blob passes over some treasure, it will
386 * grab it a.s.a.p.
387 *
388 * Eneq(@csd.uu.se): This can now be defined in the archetypes, added code
389 * to handle this.
390 *
391 * This function was seen be continueing looping at one point (tmp->below
392 * became a recursive loop. It may be better to call monster_check_apply
393 * after we pick everything up, since that function may call others which
394 * affect stacking on this space.
308 */ 395 */
309 396static void
310int 397monster_check_pickup (object *monster)
311move_monster (object *op)
312{ 398{
313 int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */ 399 object *tmp, *next;
314 object *owner, *enemy, *part, *oph = op;
315 rv_vector rv;
316 400
317 /* Monsters not on maps don't do anything. These monsters are things 401 for (tmp = monster->below; tmp != NULL; tmp = next)
318 * Like royal guards in city dwellers inventories.
319 */
320 if (!op->map)
321 return 0;
322
323 /* for target facing, we copy this value here for fast access */
324 if (oph->head) /* force update the head - one arch one pic */
325 oph = oph->head;
326
327 if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */
328 enemy = op->enemy = NULL;
329 else if ((enemy = find_enemy (op, &rv)))
330 /* we have an enemy, just tell him we want him dead */
331 enemy->attacked_by = op; /* our ptr */
332
333 /* generate hp, if applicable */
334 if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
335 { 402 {
336 403 next = tmp->below;
337 /* last heal is in funny units. Dividing by speed puts 404 if (monster_can_pick (monster, tmp))
338 * the regeneration rate on a basis of time instead of
339 * #moves the monster makes. The scaling by 8 is
340 * to capture 8th's of a hp fraction regens
341 * 405 {
342 * Cast to sint32 before comparing to maxhp since otherwise an (sint16) 406 tmp->remove ();
343 * overflow might produce monsters with negative hp. 407 tmp = insert_ob_in_ob (tmp, monster);
408 (void) monster_check_apply (monster, tmp);
409 }
410 /* We could try to re-establish the cycling, of the space, but probably
411 * not a big deal to just bail out.
344 */ 412 */
345 413 if (next && next->destroyed ())
346 op->last_heal += (int) ((float) (8 * op->stats.Con) / FABS (op->speed));
347 op->stats.hp = MIN ((sint32) op->stats.hp + op->last_heal / 32, op->stats.maxhp); /* causes Con/4 hp/tick */
348 op->last_heal %= 32;
349
350 /* So if the monster has gained enough HP that they are no longer afraid */
351 if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short) (((float) op->run_away / (float) 100) * (float) op->stats.maxhp))
352 CLEAR_FLAG (op, FLAG_RUN_AWAY);
353
354 if (op->stats.hp > op->stats.maxhp)
355 op->stats.hp = op->stats.maxhp;
356 }
357
358 /* generate sp, if applicable */
359 if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
360 {
361
362 /* last_sp is in funny units. Dividing by speed puts
363 * the regeneration rate on a basis of time instead of
364 * #moves the monster makes. The scaling by 8 is
365 * to capture 8th's of a sp fraction regens
366 *
367 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
368 * overflow might produce monsters with negative sp.
369 */
370
371 op->last_sp += (int) ((float) (8 * op->stats.Pow) / FABS (op->speed));
372 op->stats.sp = MIN (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
373 op->last_sp %= 128;
374 }
375
376 /* this should probably get modified by many more values.
377 * (eg, creatures resistance to fear, level, etc. )
378 */
379 if (QUERY_FLAG (op, FLAG_SCARED) && !(RANDOM () % 20))
380 {
381 CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
382 }
383
384 if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
385 return QUERY_FLAG (op, FLAG_FREED);
386
387 if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
388 ((op->map->darkness > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
389 {
390 if (!check_wakeup (op, enemy, &rv))
391 return 0; 414 return;
392 }
393
394 /* check if monster pops out of hidden spot */
395 if (op->hide)
396 do_hidden_move (op);
397
398 if (op->pick_up)
399 monster_check_pickup (op);
400
401 if (op->will_apply)
402 monster_apply_below (op); /* Check for items to apply below */
403
404 /* If we don't have an enemy, do special movement or the like */
405 if (!enemy)
406 { 415 }
407 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK)) 416}
408 { 417
409 remove_ob (op); 418/*
410 free_object (op); 419 * monster_apply_below():
411 return 1; 420 * Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's
421 * eager to apply things, encounters something apply-able,
422 * then make him apply it
423 */
424static void
425monster_apply_below (object *monster)
426{
427 object *tmp, *next;
428
429 for (tmp = monster->below; tmp != NULL; tmp = next)
430 {
431 next = tmp->below;
432 switch (tmp->type)
412 } 433 {
413 434 case T_HANDLE:
414 /* Probably really a bug for a creature to have both
415 * stand still and a movement type set.
416 */
417 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
418 {
419 if (op->attack_movement & HI4)
420 {
421 switch (op->attack_movement & HI4)
422 {
423 case (PETMOVE):
424 pet_move (op);
425 break;
426
427 case (CIRCLE1):
428 circ1_move (op);
429 break;
430
431 case (CIRCLE2):
432 circ2_move (op);
433 break;
434
435 case (PACEV):
436 pace_movev (op);
437 break;
438
439 case (PACEH):
440 pace_moveh (op);
441 break;
442
443 case (PACEV2):
444 pace2_movev (op);
445 break;
446
447 case (PACEH2):
448 pace2_moveh (op);
449 break;
450
451 case (RANDO):
452 rand_move (op);
453 break;
454
455 case (RANDO2):
456 move_randomly (op);
457 break;
458 }
459 return 0;
460 }
461 else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
462 (void) move_randomly (op);
463
464 } /* stand still */
465 return 0;
466 } /* no enemy */
467
468 /* We have an enemy. Block immediately below is for pets */
469 if ((op->attack_movement & HI4) == PETMOVE && (owner = get_owner (op)) != NULL && !on_same_map (op, owner))
470 return follow_owner (op, owner);
471
472 /* doppleganger code to change monster facing to that of the nearest
473 * player. Hmm. The code is here, but no monster in the current
474 * arch set uses it.
475 */
476 if ((op->race != NULL) && strcmp (op->race, "doppleganger") == 0)
477 {
478 op->face = enemy->face;
479 op->name = enemy->name;
480 }
481
482 /* Calculate range information for closest body part - this
483 * is used for the 'skill' code, which isn't that smart when
484 * it comes to figuring it out - otherwise, giants throw boulders
485 * into themselves.
486 */
487 get_rangevector (op, enemy, &rv, 0);
488
489 /* Move the check for scared up here - if the monster was scared,
490 * we were not doing any of the logic below, so might as well save
491 * a few cpu cycles.
492 */
493 if (!QUERY_FLAG (op, FLAG_SCARED))
494 {
495 rv_vector rv1;
496
497 /* now we test every part of an object .... this is a real ugly piece of code */
498 for (part = op; part != NULL; part = part->more)
499 {
500 get_rangevector (part, enemy, &rv1, 0x1);
501 dir = rv1.direction;
502
503 /* hm, not sure about this part - in original was a scared flag here too
504 * but that we test above... so can be old code here
505 */
506 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
507 dir = absdir (dir + 4);
508 if (QUERY_FLAG (op, FLAG_CONFUSED))
509 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2);
510
511 if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(RANDOM () % 3))
512 {
513 if (monster_cast_spell (op, part, enemy, dir, &rv1))
514 return 0;
515 }
516
517 if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(RANDOM () % 3))
518 {
519 if (monster_use_scroll (op, part, enemy, dir, &rv1))
520 return 0;
521 }
522
523 if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(RANDOM () % 3))
524 {
525 if (monster_use_range (op, part, enemy, dir))
526 return 0;
527 }
528 if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(RANDOM () % 3))
529 {
530 if (monster_use_skill (op, rv.part, enemy, rv.direction))
531 return 0;
532 }
533 if (QUERY_FLAG (op, FLAG_READY_BOW) && !(RANDOM () % 2))
534 {
535 if (monster_use_bow (op, part, enemy, dir))
536 return 0;
537 }
538 } /* for processing of all parts */
539 } /* If not scared */
540
541
542 part = rv.part;
543 dir = rv.direction;
544
545 if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
546 dir = absdir (dir + 4);
547
548 if (QUERY_FLAG (op, FLAG_CONFUSED))
549 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2);
550
551 pre_att_dir = dir; /* remember the original direction */
552
553 if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
554 {
555 switch (op->attack_movement & LO4)
556 {
557 case DISTATT: 435 case TRIGGER:
558 dir = dist_att (dir, op, enemy, part, &rv); 436 if (monster->will_apply & 1)
437 manual_apply (monster, tmp, 0);
559 break; 438 break;
560 439
561 case RUNATT: 440 case TREASURE:
562 dir = run_att (dir, op, enemy, part, &rv); 441 if (monster->will_apply & 2)
442 manual_apply (monster, tmp, 0);
563 break; 443 break;
564 444
565 case HITRUN:
566 dir = hitrun_att (dir, op, enemy);
567 break;
568
569 case WAITATT:
570 dir = wait_att (dir, op, enemy, part, &rv);
571 break;
572
573 case RUSH: /* default - monster normally moves towards player */
574 case ALLRUN:
575 break;
576
577 case DISTHIT:
578 dir = disthit_att (dir, op, enemy, part, &rv);
579 break;
580
581 case WAIT2:
582 dir = wait_att2 (dir, op, enemy, part, &rv);
583 break;
584
585 default:
586 LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
587 }
588 }
589
590 if (!dir)
591 return 0;
592
593 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
594 {
595 if (move_object (op, dir)) /* Can the monster move directly toward player? */
596 { 445 }
597 /* elmex: Turn our monster after it moved if it has DISTATT attack */ 446 if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
598 if ((op->attack_movement & LO4) == DISTATT) 447 break;
599 op->direction = pre_att_dir;
600
601 return 0;
602 }
603
604 if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
605 {
606
607 /* Try move around corners if !close */
608 int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || RANDOM () & 1) ? 1 : 2;
609
610 for (diff = 1; diff <= maxdiff; diff++)
611 {
612 /* try different detours */
613 int m = 1 - (RANDOM () & 2); /* Try left or right first? */
614
615 if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
616 return 0;
617 }
618 }
619 } /* if monster is not standing still */
620
621 /* elmex: Turn our monster after it moved if it has DISTATT attack */
622 if ((op->attack_movement & LO4) == DISTATT)
623 op->direction = pre_att_dir;
624
625 /*
626 * Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
627 * direction if they can't move away.
628 */
629 if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
630 if (move_randomly (op))
631 return 0;
632
633 /*
634 * Try giving the monster a new enemy - the player that is closest
635 * to it. In this way, it won't just keep trying to get to a target
636 * that is inaccessible.
637 * This could be more clever - it should go through a list of several
638 * enemies, as it is now, you could perhaps get situations where there
639 * are two players flanking the monster at close distance, but which
640 * the monster can't get to, and a third one at a far distance that
641 * the monster could get to - as it is, the monster won't look at that
642 * third one.
643 */
644 if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
645 { 448 }
646 object *nearest_player = get_nearest_player (op);
647
648 if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
649 {
650 op->enemy = NULL;
651 enemy = nearest_player;
652 }
653 }
654
655 if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
656 {
657 /* The adjustement to wc that was here before looked totally bogus -
658 * since wc can in fact get negative, that would mean by adding
659 * the current wc, the creature gets better? Instead, just
660 * add a fixed amount - nasty creatures that are runny away should
661 * still be pretty nasty.
662 */
663 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
664 {
665 part->stats.wc += 10;
666 (void) skill_attack (enemy, part, 0, NULL, NULL);
667 part->stats.wc -= 10;
668 }
669 else
670 (void) skill_attack (enemy, part, 0, NULL, NULL);
671 } /* if monster is in attack range */
672
673 if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
674 return 1;
675
676 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
677 {
678 remove_ob (op);
679 free_object (op);
680 return 1;
681 }
682 return 0;
683}
684
685int
686can_hit (object *ob1, object *ob2, rv_vector * rv)
687{
688 object *more;
689 rv_vector rv1;
690
691 if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(RANDOM () % 3))
692 return 0;
693
694 if (abs (rv->distance_x) < 2 && abs (rv->distance_y) < 2)
695 return 1;
696
697 /* check all the parts of ob2 - just because we can't get to
698 * its head doesn't mean we don't want to pound its feet
699 */
700 for (more = ob2->more; more != NULL; more = more->more)
701 {
702 get_rangevector (ob1, more, &rv1, 0);
703 if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
704 return 1;
705 }
706 return 0;
707
708} 449}
709 450
710/* Returns 1 is monster should cast spell sp at an enemy 451/* Returns 1 is monster should cast spell sp at an enemy
711 * Returns 0 if the monster should not cast this spell. 452 * Returns 0 if the monster should not cast this spell.
712 * 453 *
… …
720 * 461 *
721 * This could be a lot smarter - if there are few monsters around, 462 * This could be a lot smarter - if there are few monsters around,
722 * then disease might not be as bad. Likewise, if the monster is damaged, 463 * then disease might not be as bad. Likewise, if the monster is damaged,
723 * the right type of healing spell could be useful. 464 * the right type of healing spell could be useful.
724 */ 465 */
725
726static int 466static int
727monster_should_cast_spell (object *monster, object *spell_ob) 467monster_should_cast_spell (object *monster, object *spell_ob)
728{ 468{
729 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET || 469 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||
730 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE || 470 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||
731 spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE || 471 spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE ||
732 spell_ob->subtype == SP_MAGIC_MISSILE || spell_ob->subtype == SP_SUMMON_GOLEM || 472 spell_ob->subtype == SP_MAGIC_MISSILE || spell_ob->subtype == SP_SUMMON_GOLEM ||
733 spell_ob->subtype == SP_MAGIC_WALL || spell_ob->subtype == SP_SUMMON_MONSTER || 473 spell_ob->subtype == SP_MAGIC_WALL || spell_ob->subtype == SP_SUMMON_MONSTER ||
734 spell_ob->subtype == SP_MOVING_BALL || spell_ob->subtype == SP_SWARM || spell_ob->subtype == SP_INVISIBLE) 474 spell_ob->subtype == SP_MOVING_BALL || spell_ob->subtype == SP_SWARM || spell_ob->subtype == SP_INVISIBLE)
735
736 return 1; 475 return 1;
737 476
738 return 0; 477 return 0;
739} 478}
740 479
480/* Checks if putting on 'item' will make 'who' do more
481 * damage. This is a very simplistic check - also checking things
482 * like speed and ac are also relevant.
483 *
484 * return true if item is a better object.
485 */
486static int
487check_good_weapon (object *who, object *item)
488{
489 object *other_weap;
490 int val = 0, i;
491
492 for (other_weap = who->inv; other_weap; other_weap = other_weap->below)
493 if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED))
494 break;
495
496 if (!other_weap) /* No other weapons */
497 return 1;
498
499 /* Rather than go through and apply the new one, and see if it is
500 * better, just do some simple checks
501 * Put some multipliers for things that hvae several effects,
502 * eg, magic affects both damage and wc, so it has more weight
503 */
504
505 val = item->stats.dam - other_weap->stats.dam;
506 val += (item->magic - other_weap->magic) * 3;
507 /* Monsters don't really get benefits from things like regen rates
508 * from items. But the bonus for their stats are very important.
509 */
510 for (i = 0; i < NUM_STATS; i++)
511 val += item->stats.stat (i) - other_weap->stats.stat (i) * 2;
512
513 if (val > 0)
514 return 1;
515 else
516 return 0;
517}
518
519static int
520check_good_armour (object *who, object *item)
521{
522 object *other_armour;
523 int val = 0, i;
524
525 for (other_armour = who->inv; other_armour; other_armour = other_armour->below)
526 if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED))
527 break;
528
529 if (other_armour == NULL) /* No other armour, use the new */
530 return 1;
531
532 /* Like above function , see which is better */
533 val = item->stats.ac - other_armour->stats.ac;
534 val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL]) / 5;
535 val += (item->magic - other_armour->magic) * 3;
536
537 /* for the other protections, do weigh them very much in the equation -
538 * it is the armor protection which is most important, because there is
539 * no good way to know what the player may attack the monster with.
540 * So if the new item has better protection than the old, give that higher
541 * value. If the reverse, then decrease the value of this item some.
542 */
543 for (i = 1; i < NROFATTACKS; i++)
544 {
545 if (item->resist[i] > other_armour->resist[i])
546 val++;
547 else if (item->resist[i] < other_armour->resist[i])
548 val--;
549 }
550
551 /* Very few armours have stats, so not much need to worry about those. */
552
553 if (val > 0)
554 return 1;
555 else
556 return 0;
557}
558
559/*
560 * monster_check_apply() is meant to be called after an item is
561 * inserted in a monster.
562 * If an item becomes outdated (monster found a better item),
563 * a pointer to that object is returned, so it can be dropped.
564 * (so that other monsters can pick it up and use it)
565 * Note that as things are now, monsters never drop something -
566 * they can pick up all that they can use.
567 */
568/* Sept 96, fixed this so skills will be readied -b.t.*/
569void
570monster_check_apply (object *mon, object *item)
571{
572 int flag = 0;
573
574 if (item->type == SPELLBOOK && mon->arch && (QUERY_FLAG (mon->arch, FLAG_CAST_SPELL)))
575 {
576 SET_FLAG (mon, FLAG_CAST_SPELL);
577 return;
578 }
579
580 /* If for some reason, this item is already applied, no more work to do */
581 if (QUERY_FLAG (item, FLAG_APPLIED))
582 return;
583
584 /* Might be better not to do this - if the monster can fire a bow,
585 * it is possible in his wanderings, he will find one to use. In
586 * which case, it would be nice to have ammo for it.
587 */
588 if (QUERY_FLAG (mon, FLAG_USE_BOW) && item->type == ARROW)
589 {
590 /* Check for the right kind of bow */
591 object *bow;
592
593 for (bow = mon->inv; bow; bow = bow->below)
594 if (bow->type == BOW && bow->race == item->race)
595 {
596 SET_FLAG (mon, FLAG_READY_BOW);
597 LOG (llevMonster, "Found correct bow for arrows.\n");
598 return; /* nothing more to do for arrows */
599 }
600 }
601
602 if (item->type == TREASURE && mon->will_apply & WILL_APPLY_TREASURE)
603 flag = 1;
604 /* Eating food gets hp back */
605 else if (item->type == FOOD && mon->will_apply & WILL_APPLY_FOOD)
606 flag = 1;
607 else if (item->type == SCROLL && QUERY_FLAG (mon, FLAG_USE_SCROLL))
608 {
609 if (!item->inv)
610 LOG (llevDebug, "Monster %d having scroll %d with empty inventory!", mon->count, item->count);
611 else if (monster_should_cast_spell (mon, item->inv))
612 SET_FLAG (mon, FLAG_READY_SCROLL);
613 /* Don't use it right now */
614 return;
615 }
616 else if (item->type == WEAPON)
617 flag = check_good_weapon (mon, item);
618 else if (item->is_armor ())
619 flag = check_good_armour (mon, item);
620 /* Should do something more, like make sure this is a better item */
621 else if (item->type == RING)
622 flag = 1;
623 else if (item->type == WAND || item->type == ROD || item->type == HORN)
624 {
625 /* We never really 'ready' the wand/rod/horn, because that would mean the
626 * weapon would get undone.
627 */
628 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
629 {
630 SET_FLAG (mon, FLAG_READY_RANGE);
631 SET_FLAG (item, FLAG_APPLIED);
632 }
633 return;
634 }
635 else if (item->type == BOW)
636 {
637 /* We never really 'ready' the bow, because that would mean the
638 * weapon would get undone.
639 */
640 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
641 SET_FLAG (mon, FLAG_READY_BOW);
642 return;
643 }
644 else if (item->type == SKILL)
645 {
646 /*
647 * skills are specials: monsters must have the 'FLAG_READY_SKILL' flag set,
648 * else they can't use the skill...
649 * Skills also don't need to get applied, so return now.
650 */
651 SET_FLAG (mon, FLAG_READY_SKILL);
652 return;
653 }
654
655 /* if we don't match one of the above types, return now.
656 * can_apply_object will say that we can apply things like flesh,
657 * bolts, and whatever else, because it only checks against the
658 * body_info locations.
659 */
660 if (!flag)
661 return;
662
663 /* Check to see if the monster can use this item. If not, no need
664 * to do further processing. Note that can_apply_object already checks
665 * for the CAN_USE flags.
666 */
667 if (can_apply_object (mon, item) & CAN_APPLY_NOT_MASK)
668 return;
669
670 /* should only be applying this item, not unapplying it.
671 * also, ignore status of curse so they can take off old armour.
672 * monsters have some advantages after all.
673 */
674 manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE);
675}
676
677static int
678can_hit (object *ob1, object *ob2, rv_vector * rv)
679{
680 object *more;
681 rv_vector rv1;
682
683 if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(rndm (3)))
684 return 0;
685
686 if (abs (rv->distance_x) < 2 && abs (rv->distance_y) < 2)
687 return 1;
688
689 /* check all the parts of ob2 - just because we can't get to
690 * its head doesn't mean we don't want to pound its feet
691 */
692 for (more = ob2->more; more; more = more->more)
693 {
694 get_rangevector (ob1, more, &rv1, 0);
695 if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
696 return 1;
697 }
698
699 return 0;
700}
701
702static int
703dist_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
704{
705 if (can_hit (part, enemy, rv))
706 return dir;
707
708 if (rv->distance < 10)
709 return absdir (dir + 4);
710 else if (rv->distance > 18)
711 return dir;
712
713 return 0;
714}
715
716static int
717run_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
718{
719 if (can_hit (part, enemy, rv))
720 return dir;
721 else
722 return absdir (dir + 4);
723}
724
725static int
726hitrun_att (int dir, object *ob, object *enemy)
727{
728 if (ob->move_status++ < 25)
729 return dir;
730 else if (ob->move_status < 50)
731 return absdir (dir + 4);
732 else
733 ob->move_status = 0;
734
735 return absdir (dir + 4);
736}
737
738static int
739wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
740{
741 int inrange = can_hit (part, enemy, rv);
742
743 if (ob->move_status || inrange)
744 ob->move_status++;
745
746 if (ob->move_status == 0)
747 return 0;
748 else if (ob->move_status < 10)
749 return dir;
750 else if (ob->move_status < 15)
751 return absdir (dir + 4);
752
753 ob->move_status = 0;
754 return 0;
755}
756
757static int
758disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
759{
760 /* The logic below here looked plain wrong before. Basically, what should
761 * happen is that if the creatures hp percentage falls below run_away,
762 * the creature should run away (dir+4)
763 * I think its wrong for a creature to have a zero maxhp value, but
764 * at least one map has this set, and whatever the map contains, the
765 * server should try to be resilant enough to avoid the problem
766 */
767 if (ob->stats.hp * 100 < ob->stats.maxhp * ob->run_away)
768 return absdir (dir + 4);
769
770 return dist_att (dir, ob, enemy, part, rv);
771}
772
773static int
774wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
775{
776 if (rv->distance < 9)
777 return absdir (dir + 4);
778
779 return 0;
780}
781
782static void
783circ1_move (object *ob)
784{
785 static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 };
786
787 if (++ob->move_status > 11)
788 ob->move_status = 0;
789
790 if (!(move_object (ob, circle[ob->move_status])))
791 move_object (ob, rndm (8) + 1);
792}
793
794static void
795circ2_move (object *ob)
796{
797 static int circle[20] = { 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 1, 1, 1, 2, 2 };
798
799 if (++ob->move_status > 19)
800 ob->move_status = 0;
801
802 if (!(move_object (ob, circle[ob->move_status])))
803 move_object (ob, rndm (8) + 1);
804}
805
806static void
807pace_movev (object *ob)
808{
809 if (ob->move_status++ > 6)
810 ob->move_status = 0;
811
812 if (ob->move_status < 4)
813 move_object (ob, 5);
814 else
815 move_object (ob, 1);
816}
817
818static void
819pace_moveh (object *ob)
820{
821 if (ob->move_status++ > 6)
822 ob->move_status = 0;
823
824 if (ob->move_status < 4)
825 move_object (ob, 3);
826 else
827 move_object (ob, 7);
828}
829
830static void
831pace2_movev (object *ob)
832{
833 if (ob->move_status++ > 16)
834 ob->move_status = 0;
835
836 if (ob->move_status < 6)
837 move_object (ob, 5);
838 else if (ob->move_status < 8)
839 return;
840 else if (ob->move_status < 13)
841 move_object (ob, 1);
842 else
843 return;
844}
845
846static void
847pace2_moveh (object *ob)
848{
849 if (ob->move_status++ > 16)
850 ob->move_status = 0;
851
852 if (ob->move_status < 6)
853 move_object (ob, 3);
854 else if (ob->move_status < 8)
855 return;
856 else if (ob->move_status < 13)
857 move_object (ob, 7);
858 else
859 return;
860}
861
862static void
863rand_move (object *ob)
864{
865 if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(rndm (9)))))
866 for (int i = 0; i < 5; i++)
867 if (move_object (ob, ob->move_status = rndm (8) + 1))
868 return;
869}
741 870
742#define MAX_KNOWN_SPELLS 20 871#define MAX_KNOWN_SPELLS 20
743 872
744/* Returns a randomly selected spell. This logic is still 873/* Returns a randomly selected spell. This logic is still
745 * less than ideal. This code also only seems to deal with 874 * less than ideal. This code also only seems to deal with
746 * wizard spells, as the check is against sp, and not grace. 875 * wizard spells, as the check is against sp, and not grace.
747 * can mosnters know cleric spells? 876 * can mosnters know cleric spells?
748 */ 877 */
749object * 878static object *
750monster_choose_random_spell (object *monster) 879monster_choose_random_spell (object *monster)
751{ 880{
752 object *altern[MAX_KNOWN_SPELLS]; 881 object *altern[MAX_KNOWN_SPELLS];
753 object *tmp;
754 int i = 0; 882 int i = 0;
755 883
756 for (tmp = monster->inv; tmp != NULL; tmp = tmp->below) 884 for (object *tmp = monster->inv; tmp; tmp = tmp->below)
757 if (tmp->type == SPELLBOOK || tmp->type == SPELL) 885 if (tmp->type == SPELLBOOK || tmp->type == SPELL)
758 { 886 {
759 /* Check and see if it's actually a useful spell. 887 /* Check and see if it's actually a useful spell.
760 * If its a spellbook, the spell is actually the inventory item. 888 * If its a spellbook, the spell is actually the inventory item.
761 * if it is a spell, then it is just the object itself. 889 * if it is a spell, then it is just the object itself.
762 */ 890 */
763 if (monster_should_cast_spell (monster, (tmp->type == SPELLBOOK) ? tmp->inv : tmp)) 891 if (monster_should_cast_spell (monster, (tmp->type == SPELLBOOK) ? tmp->inv : tmp))
764 { 892 {
765 altern[i++] = tmp; 893 altern [i++] = tmp;
894
766 if (i == MAX_KNOWN_SPELLS) 895 if (i == MAX_KNOWN_SPELLS)
767 break; 896 break;
768 } 897 }
769 } 898 }
770 if (!i) 899
771 return NULL; 900 return i ? altern [rndm (i)] : 0;
772 return altern[RANDOM () % i];
773} 901}
774 902
775/* This checks to see if the monster should cast a spell/ability. 903/* This checks to see if the monster should cast a spell/ability.
776 * it returns true if the monster casts a spell, 0 if he doesn't. 904 * it returns true if the monster casts a spell, 0 if he doesn't.
777 * head is the head of the monster. 905 * head is the head of the monster.
778 * part is the part of the monster we are checking against. 906 * part is the part of the monster we are checking against.
779 * pl is the target. 907 * pl is the target.
780 * dir is the direction to case. 908 * dir is the direction to case.
781 * rv is the vector which describes where the enemy is. 909 * rv is the vector which describes where the enemy is.
782 */ 910 */
783 911static int
784int
785monster_cast_spell (object *head, object *part, object *pl, int dir, rv_vector * rv) 912monster_cast_spell (object *head, object *part, object *pl, int dir, rv_vector * rv)
786{ 913{
787 object *spell_item; 914 object *spell_item;
788 object *owner; 915 object *owner;
789 rv_vector rv1; 916 rv_vector rv1;
… …
795 * other monsters) 922 * other monsters)
796 */ 923 */
797 if (!(dir = path_to_player (part, pl, 0))) 924 if (!(dir = path_to_player (part, pl, 0)))
798 return 0; 925 return 0;
799 926
800 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = get_owner (head)) != NULL) 927 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
801 { 928 {
802 get_rangevector (head, owner, &rv1, 0x1); 929 get_rangevector (head, owner, &rv1, 0x1);
803 if (dirdiff (dir, rv1.direction) < 2) 930 if (dirdiff (dir, rv1.direction) < 2)
804 {
805 return 0; /* Might hit owner with spell */ 931 return 0; /* Might hit owner with spell */
806 }
807 } 932 }
808 933
809 if (QUERY_FLAG (head, FLAG_CONFUSED)) 934 if (QUERY_FLAG (head, FLAG_CONFUSED))
810 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 935 dir = absdir (dir + rndm (3) + rndm (3) - 2);
811 936
812 /* If the monster hasn't already chosen a spell, choose one 937 /* If the monster hasn't already chosen a spell, choose one
813 * I'm not sure if it really make sense to pre-select spells (events 938 * I'm not sure if it really make sense to pre-select spells (events
814 * could be different by the time the monster goes again). 939 * could be different by the time the monster goes again).
815 */ 940 */
… …
819 { 944 {
820 LOG (llevMonster, "Turned off spells in %s\n", &head->name); 945 LOG (llevMonster, "Turned off spells in %s\n", &head->name);
821 CLEAR_FLAG (head, FLAG_CAST_SPELL); /* Will be turned on when picking up book */ 946 CLEAR_FLAG (head, FLAG_CAST_SPELL); /* Will be turned on when picking up book */
822 return 0; 947 return 0;
823 } 948 }
949
824 if (spell_item->type == SPELLBOOK) 950 if (spell_item->type == SPELLBOOK)
825 { 951 {
826 if (!spell_item->inv) 952 if (!spell_item->inv)
827 { 953 {
828 LOG (llevError, "spellbook %s does not contain a spell?\n", &spell_item->name); 954 LOG (llevError, "spellbook %s does not contain a spell?\n", &spell_item->name);
829 return 0; 955 return 0;
830 } 956 }
957
831 spell_item = spell_item->inv; 958 spell_item = spell_item->inv;
832 } 959 }
833 } 960 }
834 else 961 else
835 spell_item = head->spellitem; 962 spell_item = head->spellitem;
… …
855 head->spellitem = NULL; 982 head->spellitem = NULL;
856 983
857 return cast_spell (part, part, dir, spell_item, NULL); 984 return cast_spell (part, part, dir, spell_item, NULL);
858} 985}
859 986
860 987static int
861int
862monster_use_scroll (object *head, object *part, object *pl, int dir, rv_vector * rv) 988monster_use_scroll (object *head, object *part, object *pl, int dir, rv_vector * rv)
863{ 989{
864 object *scroll; 990 object *scroll;
865 object *owner; 991 object *owner;
866 rv_vector rv1; 992 rv_vector rv1;
… …
872 * other monsters) 998 * other monsters)
873 */ 999 */
874 if (!(dir = path_to_player (part, pl, 0))) 1000 if (!(dir = path_to_player (part, pl, 0)))
875 return 0; 1001 return 0;
876 1002
877 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = get_owner (head)) != NULL) 1003 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
878 { 1004 {
879 get_rangevector (head, owner, &rv1, 0x1); 1005 get_rangevector (head, owner, &rv1, 0x1);
880 if (dirdiff (dir, rv1.direction) < 2) 1006 if (dirdiff (dir, rv1.direction) < 2)
881 { 1007 {
882 return 0; /* Might hit owner with spell */ 1008 return 0; /* Might hit owner with spell */
883 } 1009 }
884 } 1010 }
885 1011
886 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1012 if (QUERY_FLAG (head, FLAG_CONFUSED))
887 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1013 dir = absdir (dir + rndm (3) + rndm (3) - 2);
888 1014
889 for (scroll = head->inv; scroll; scroll = scroll->below) 1015 for (scroll = head->inv; scroll; scroll = scroll->below)
890 if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv)) 1016 if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv))
891 break; 1017 break;
892 1018
… …
914 * The skills we are treating here are all but those. -b.t. 1040 * The skills we are treating here are all but those. -b.t.
915 * 1041 *
916 * At the moment this is only useful for throwing, perhaps for 1042 * At the moment this is only useful for throwing, perhaps for
917 * stealing. TODO: This should be more integrated in the game. -MT, 25.11.01 1043 * stealing. TODO: This should be more integrated in the game. -MT, 25.11.01
918 */ 1044 */
919 1045static int
920int
921monster_use_skill (object *head, object *part, object *pl, int dir) 1046monster_use_skill (object *head, object *part, object *pl, int dir)
922{ 1047{
923 object *skill, *owner; 1048 object *skill, *owner;
924 1049
925 if (!(dir = path_to_player (part, pl, 0))) 1050 if (!(dir = path_to_player (part, pl, 0)))
926 return 0; 1051 return 0;
927 1052
928 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = get_owner (head)) != NULL) 1053 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
929 { 1054 {
930 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y); 1055 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
931 1056
932 if (dirdiff (dir, dir2) < 1) 1057 if (dirdiff (dir, dir2) < 1)
933 return 0; /* Might hit owner with skill -thrown rocks for example ? */ 1058 return 0; /* Might hit owner with skill -thrown rocks for example ? */
934 } 1059 }
1060
935 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1061 if (QUERY_FLAG (head, FLAG_CONFUSED))
936 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1062 dir = absdir (dir + rndm (3) + rndm (3) - 2);
937 1063
938 /* skill selection - monster will use the next unused skill. 1064 /* skill selection - monster will use the next unused skill.
939 * well...the following scenario will allow the monster to 1065 * well...the following scenario will allow the monster to
940 * toggle between 2 skills. One day it would be nice to make 1066 * toggle between 2 skills. One day it would be nice to make
941 * more skills available to monsters. 1067 * more skills available to monsters.
942 */ 1068 */
943
944 for (skill = head->inv; skill != NULL; skill = skill->below) 1069 for (skill = head->inv; skill; skill = skill->below)
945 if (skill->type == SKILL && skill != head->chosen_skill) 1070 if (skill->type == SKILL && skill != head->chosen_skill)
946 { 1071 {
947 head->chosen_skill = skill; 1072 head->chosen_skill = skill;
948 break; 1073 break;
949 } 1074 }
… …
952 { 1077 {
953 LOG (llevDebug, "Error: Monster %s (%d) has FLAG_READY_SKILL without skill.\n", &head->name, head->count); 1078 LOG (llevDebug, "Error: Monster %s (%d) has FLAG_READY_SKILL without skill.\n", &head->name, head->count);
954 CLEAR_FLAG (head, FLAG_READY_SKILL); 1079 CLEAR_FLAG (head, FLAG_READY_SKILL);
955 return 0; 1080 return 0;
956 } 1081 }
1082
957 /* use skill */ 1083 /* use skill */
958 return do_skill (head, part, head->chosen_skill, dir, NULL); 1084 return do_skill (head, part, head->chosen_skill, dir, NULL);
959} 1085}
960 1086
961/* Monster will use a ranged spell attack. */ 1087/* Monster will use a ranged spell attack. */
962 1088static int
963int
964monster_use_range (object *head, object *part, object *pl, int dir) 1089monster_use_range (object *head, object *part, object *pl, int dir)
965{ 1090{
966 object *wand, *owner; 1091 object *wand, *owner;
967 int at_least_one = 0; 1092 int at_least_one = 0;
968 1093
969 if (!(dir = path_to_player (part, pl, 0))) 1094 if (!(dir = path_to_player (part, pl, 0)))
970 return 0; 1095 return 0;
971 1096
972 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = get_owner (head)) != NULL) 1097 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
973 { 1098 {
974 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y); 1099 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
975 1100
976 if (dirdiff (dir, dir2) < 2) 1101 if (dirdiff (dir, dir2) < 2)
977 return 0; /* Might hit owner with spell */ 1102 return 0; /* Might hit owner with spell */
978 } 1103 }
1104
979 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1105 if (QUERY_FLAG (head, FLAG_CONFUSED))
980 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1106 dir = absdir (dir + rndm (3) + rndm (3) - 2);
981 1107
982 for (wand = head->inv; wand != NULL; wand = wand->below) 1108 for (wand = head->inv; wand; wand = wand->below)
983 { 1109 {
984 if (wand->type == WAND) 1110 if (wand->type == WAND)
985 { 1111 {
986 /* Found a wand, let's see if it has charges left */ 1112 /* Found a wand, let's see if it has charges left */
987 at_least_one = 1; 1113 at_least_one = 1;
… …
993 if (!(--wand->stats.food)) 1119 if (!(--wand->stats.food))
994 { 1120 {
995 if (wand->arch) 1121 if (wand->arch)
996 { 1122 {
997 CLEAR_FLAG (wand, FLAG_ANIMATE); 1123 CLEAR_FLAG (wand, FLAG_ANIMATE);
998 wand->face = wand->arch->clone.face; 1124 wand->face = wand->arch->face;
999 wand->speed = 0; 1125 wand->set_speed (0);
1000 update_ob_speed (wand);
1001 } 1126 }
1002 } 1127 }
1003 /* Success */ 1128 /* Success */
1004 return 1; 1129 return 1;
1005 } 1130 }
1006 else if (wand->type == ROD || wand->type == HORN) 1131 else if (wand->type == ROD || wand->type == HORN)
1007 { 1132 {
1008 /* Found rod/horn, let's use it if possible */ 1133 /* Found rod/horn, let's use it if possible */
1009 at_least_one = 1; 1134 at_least_one = 1;
1010 if (wand->stats.hp < MAX (wand->inv->stats.sp, wand->inv->stats.grace)) 1135 if (wand->stats.hp < max (wand->inv->stats.sp, wand->inv->stats.grace))
1011 continue; 1136 continue;
1012 1137
1013 /* drain charge before casting spell - can be a case where the 1138 /* drain charge before casting spell - can be a case where the
1014 * spell destroys the monster, and rod, so if done after, results 1139 * spell destroys the monster, and rod, so if done after, results
1015 * in crash. 1140 * in crash.
… …
1023 } 1148 }
1024 1149
1025 if (at_least_one) 1150 if (at_least_one)
1026 return 0; 1151 return 0;
1027 1152
1028 LOG (llevError, "Error: Monster %s (%d) HAS_READY_RANG() without wand/horn/rod.\n", &head->name, head->count); 1153 LOG (llevError, "Error: Monster %s (%d) HAS_READY_RANGE() without wand/horn/rod.\n", &head->name, head->count);
1029 CLEAR_FLAG (head, FLAG_READY_RANGE); 1154 CLEAR_FLAG (head, FLAG_READY_RANGE);
1030 return 0; 1155 return 0;
1031} 1156}
1032 1157
1033int 1158static int
1034monster_use_bow (object *head, object *part, object *pl, int dir) 1159monster_use_bow (object *head, object *part, object *pl, int dir)
1035{ 1160{
1036 object *owner; 1161 object *owner;
1037 1162
1038 if (!(dir = path_to_player (part, pl, 0))) 1163 if (!(dir = path_to_player (part, pl, 0)))
1039 return 0; 1164 return 0;
1165
1040 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1166 if (QUERY_FLAG (head, FLAG_CONFUSED))
1041 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1167 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1042 1168
1043 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = get_owner (head)) != NULL) 1169 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
1044 { 1170 {
1045 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y); 1171 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
1046 1172
1047 if (dirdiff (dir, dir2) < 1) 1173 if (dirdiff (dir, dir2) < 1)
1048 return 0; /* Might hit owner with arrow */ 1174 return 0; /* Might hit owner with arrow */
… …
1051 /* in server/player.c */ 1177 /* in server/player.c */
1052 return fire_bow (head, part, NULL, dir, 0, part->x, part->y); 1178 return fire_bow (head, part, NULL, dir, 0, part->x, part->y);
1053 1179
1054} 1180}
1055 1181
1056/* Checks if putting on 'item' will make 'who' do more
1057 * damage. This is a very simplistic check - also checking things
1058 * like speed and ac are also relevant.
1059 *
1060 * return true if item is a better object.
1061 */
1062
1063int
1064check_good_weapon (object *who, object *item)
1065{
1066 object *other_weap;
1067 int val = 0, i;
1068
1069 for (other_weap = who->inv; other_weap != NULL; other_weap = other_weap->below)
1070 if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED))
1071 break;
1072
1073 if (other_weap == NULL) /* No other weapons */
1074 return 1;
1075
1076 /* Rather than go through and apply the new one, and see if it is
1077 * better, just do some simple checks
1078 * Put some multipliers for things that hvae several effects,
1079 * eg, magic affects both damage and wc, so it has more weight
1080 */
1081
1082 val = item->stats.dam - other_weap->stats.dam;
1083 val += (item->magic - other_weap->magic) * 3;
1084 /* Monsters don't really get benefits from things like regen rates
1085 * from items. But the bonus for their stats are very important.
1086 */
1087 for (i = 0; i < NUM_STATS; i++)
1088 val += (get_attr_value (&item->stats, i) - get_attr_value (&other_weap->stats, i)) * 2;
1089
1090 if (val > 0)
1091 return 1;
1092 else
1093 return 0;
1094
1095}
1096
1097int
1098check_good_armour (object *who, object *item)
1099{
1100 object *other_armour;
1101 int val = 0, i;
1102
1103 for (other_armour = who->inv; other_armour != NULL; other_armour = other_armour->below)
1104 if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED))
1105 break;
1106
1107 if (other_armour == NULL) /* No other armour, use the new */
1108 return 1;
1109
1110 /* Like above function , see which is better */
1111 val = item->stats.ac - other_armour->stats.ac;
1112 val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL]) / 5;
1113 val += (item->magic - other_armour->magic) * 3;
1114
1115 /* for the other protections, do weigh them very much in the equation -
1116 * it is the armor protection which is most important, because there is
1117 * no good way to know what the player may attack the monster with.
1118 * So if the new item has better protection than the old, give that higher
1119 * value. If the reverse, then decrease the value of this item some.
1120 */
1121 for (i = 1; i < NROFATTACKS; i++)
1122 {
1123 if (item->resist[i] > other_armour->resist[i])
1124 val++;
1125 else if (item->resist[i] < other_armour->resist[i])
1126 val--;
1127 }
1128
1129 /* Very few armours have stats, so not much need to worry about those. */
1130
1131 if (val > 0)
1132 return 1;
1133 else
1134 return 0;
1135
1136}
1137
1138/*
1139 * monster_check_pickup(): checks for items that monster can pick up.
1140 *
1141 * Vick's (vick@bern.docs.uu.se) fix 921030 for the sweeper blob.
1142 * Each time the blob passes over some treasure, it will
1143 * grab it a.s.a.p.
1144 *
1145 * Eneq(@csd.uu.se): This can now be defined in the archetypes, added code
1146 * to handle this.
1147 *
1148 * This function was seen be continueing looping at one point (tmp->below
1149 * became a recursive loop. It may be better to call monster_check_apply
1150 * after we pick everything up, since that function may call others which
1151 * affect stacking on this space.
1152 */
1153
1154void
1155monster_check_pickup (object *monster)
1156{
1157 object *tmp, *next;
1158 int next_tag;
1159
1160 for (tmp = monster->below; tmp != NULL; tmp = next)
1161 {
1162 next = tmp->below;
1163 next_tag = next ? next->count : 0;
1164 if (monster_can_pick (monster, tmp))
1165 {
1166 remove_ob (tmp);
1167 tmp = insert_ob_in_ob (tmp, monster);
1168 (void) monster_check_apply (monster, tmp);
1169 }
1170 /* We could try to re-establish the cycling, of the space, but probably
1171 * not a big deal to just bail out.
1172 */
1173 if (next && was_destroyed (next, next_tag))
1174 return;
1175 }
1176}
1177
1178/*
1179 * monster_can_pick(): If the monster is interested in picking up
1180 * the item, then return 0. Otherwise 0.
1181 * Instead of pick_up, flags for "greed", etc, should be used.
1182 * I've already utilized flags for bows, wands, rings, etc, etc. -Frank.
1183 */
1184
1185int
1186monster_can_pick (object *monster, object *item)
1187{
1188 int flag = 0;
1189 int i;
1190
1191 if (!can_pick (monster, item))
1192 return 0;
1193
1194 if (QUERY_FLAG (item, FLAG_UNPAID))
1195 return 0;
1196
1197 if (monster->pick_up & 64) /* All */
1198 flag = 1;
1199
1200 else
1201 switch (item->type)
1202 {
1203 case MONEY:
1204 case GEM:
1205 flag = monster->pick_up & 2;
1206 break;
1207
1208 case FOOD:
1209 flag = monster->pick_up & 4;
1210 break;
1211
1212 case WEAPON:
1213 flag = (monster->pick_up & 8) || QUERY_FLAG (monster, FLAG_USE_WEAPON);
1214 break;
1215
1216 case ARMOUR:
1217 case SHIELD:
1218 case HELMET:
1219 case BOOTS:
1220 case GLOVES:
1221 case GIRDLE:
1222 flag = (monster->pick_up & 16) || QUERY_FLAG (monster, FLAG_USE_ARMOUR);
1223 break;
1224
1225 case SKILL:
1226 flag = QUERY_FLAG (monster, FLAG_CAN_USE_SKILL);
1227 break;
1228
1229 case RING:
1230 flag = QUERY_FLAG (monster, FLAG_USE_RING);
1231 break;
1232
1233 case WAND:
1234 case HORN:
1235 case ROD:
1236 flag = QUERY_FLAG (monster, FLAG_USE_RANGE);
1237 break;
1238
1239 case SPELLBOOK:
1240 flag = (monster->arch != NULL && QUERY_FLAG ((&monster->arch->clone), FLAG_CAST_SPELL));
1241 break;
1242
1243 case SCROLL:
1244 flag = QUERY_FLAG (monster, FLAG_USE_SCROLL);
1245 break;
1246
1247 case BOW:
1248 case ARROW:
1249 flag = QUERY_FLAG (monster, FLAG_USE_BOW);
1250 break;
1251 }
1252 /* Simplistic check - if the monster has a location to equip it, he will
1253 * pick it up. Note that this doesn't handle cases where an item may
1254 * use several locations.
1255 */
1256 for (i = 0; i < NUM_BODY_LOCATIONS; i++)
1257 {
1258 if (monster->body_info[i] && item->body_info[i])
1259 {
1260 flag = 1;
1261 break;
1262 }
1263 }
1264
1265 if (((!(monster->pick_up & 32)) && flag) || ((monster->pick_up & 32) && (!flag)))
1266 return 1;
1267 return 0;
1268}
1269
1270/*
1271 * monster_apply_below():
1272 * Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's
1273 * eager to apply things, encounters something apply-able,
1274 * then make him apply it
1275 */
1276
1277void
1278monster_apply_below (object *monster)
1279{
1280 object *tmp, *next;
1281
1282 for (tmp = monster->below; tmp != NULL; tmp = next)
1283 {
1284 next = tmp->below;
1285 switch (tmp->type)
1286 {
1287 case CF_HANDLE:
1288 case TRIGGER:
1289 if (monster->will_apply & 1)
1290 manual_apply (monster, tmp, 0);
1291 break;
1292
1293 case TREASURE:
1294 if (monster->will_apply & 2)
1295 manual_apply (monster, tmp, 0);
1296 break;
1297
1298 }
1299 if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1300 break;
1301 }
1302}
1303
1304/*
1305 * monster_check_apply() is meant to be called after an item is
1306 * inserted in a monster.
1307 * If an item becomes outdated (monster found a better item),
1308 * a pointer to that object is returned, so it can be dropped.
1309 * (so that other monsters can pick it up and use it)
1310 * Note that as things are now, monsters never drop something -
1311 * they can pick up all that they can use.
1312 */
1313
1314/* Sept 96, fixed this so skills will be readied -b.t.*/
1315
1316void
1317monster_check_apply (object *mon, object *item)
1318{
1319
1320 int flag = 0;
1321
1322 if (item->type == SPELLBOOK && mon->arch != NULL && (QUERY_FLAG ((&mon->arch->clone), FLAG_CAST_SPELL)))
1323 {
1324 SET_FLAG (mon, FLAG_CAST_SPELL);
1325 return;
1326 }
1327
1328 /* If for some reason, this item is already applied, no more work to do */
1329 if (QUERY_FLAG (item, FLAG_APPLIED))
1330 return;
1331
1332 /* Might be better not to do this - if the monster can fire a bow,
1333 * it is possible in his wanderings, he will find one to use. In
1334 * which case, it would be nice to have ammo for it.
1335 */
1336 if (QUERY_FLAG (mon, FLAG_USE_BOW) && item->type == ARROW)
1337 {
1338 /* Check for the right kind of bow */
1339 object *bow;
1340
1341 for (bow = mon->inv; bow != NULL; bow = bow->below)
1342 if (bow->type == BOW && bow->race == item->race)
1343 {
1344 SET_FLAG (mon, FLAG_READY_BOW);
1345 LOG (llevMonster, "Found correct bow for arrows.\n");
1346 return; /* nothing more to do for arrows */
1347 }
1348 }
1349
1350 if (item->type == TREASURE && mon->will_apply & WILL_APPLY_TREASURE)
1351 flag = 1;
1352 /* Eating food gets hp back */
1353 else if (item->type == FOOD && mon->will_apply & WILL_APPLY_FOOD)
1354 flag = 1;
1355 else if (item->type == SCROLL && QUERY_FLAG (mon, FLAG_USE_SCROLL))
1356 {
1357 if (!item->inv)
1358 LOG (llevDebug, "Monster %d having scroll %d with empty inventory!", mon->count, item->count);
1359 else if (monster_should_cast_spell (mon, item->inv))
1360 SET_FLAG (mon, FLAG_READY_SCROLL);
1361 /* Don't use it right now */
1362 return;
1363 }
1364 else if (item->type == WEAPON)
1365 flag = check_good_weapon (mon, item);
1366 else if (IS_ARMOR (item))
1367 flag = check_good_armour (mon, item);
1368 /* Should do something more, like make sure this is a better item */
1369 else if (item->type == RING)
1370 flag = 1;
1371 else if (item->type == WAND || item->type == ROD || item->type == HORN)
1372 {
1373 /* We never really 'ready' the wand/rod/horn, because that would mean the
1374 * weapon would get undone.
1375 */
1376 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
1377 {
1378 SET_FLAG (mon, FLAG_READY_RANGE);
1379 SET_FLAG (item, FLAG_APPLIED);
1380 }
1381 return;
1382 }
1383 else if (item->type == BOW)
1384 {
1385 /* We never really 'ready' the bow, because that would mean the
1386 * weapon would get undone.
1387 */
1388 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
1389 SET_FLAG (mon, FLAG_READY_BOW);
1390 return;
1391 }
1392 else if (item->type == SKILL)
1393 {
1394 /*
1395 * skills are specials: monsters must have the 'FLAG_READY_SKILL' flag set,
1396 * else they can't use the skill...
1397 * Skills also don't need to get applied, so return now.
1398 */
1399 SET_FLAG (mon, FLAG_READY_SKILL);
1400 return;
1401 }
1402
1403
1404 /* if we don't match one of the above types, return now.
1405 * can_apply_object will say that we can apply things like flesh,
1406 * bolts, and whatever else, because it only checks against the
1407 * body_info locations.
1408 */
1409 if (!flag)
1410 return;
1411
1412 /* Check to see if the monster can use this item. If not, no need
1413 * to do further processing. Note that can_apply_object already checks
1414 * for the CAN_USE flags.
1415 */
1416 if (can_apply_object (mon, item) & CAN_APPLY_NOT_MASK)
1417 return;
1418
1419 /* should only be applying this item, not unapplying it.
1420 * also, ignore status of curse so they can take off old armour.
1421 * monsters have some advantages after all.
1422 */
1423 manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE);
1424
1425 return;
1426}
1427
1428void 1182void
1429npc_call_help (object *op) 1183npc_call_help (object *op)
1430{ 1184{
1431 int x, y, mflags; 1185 unordered_mapwalk (op, -7, -7, 7, 7)
1432 object *npc; 1186 {
1433 sint16 sx, sy; 1187 mapspace &ms = m->at (nx, ny);
1434 mapstruct *m;
1435 1188
1436 for (x = -3; x < 4; x++) 1189 /* If nothing alive on this space, no need to search the space. */
1437 for (y = -3; y < 4; y++) 1190 if (!(ms.flags () & P_IS_ALIVE))
1191 continue;
1192
1193 for (object *npc = ms.bot; npc; npc = npc->above)
1194 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1195 npc->enemy = op->enemy;
1196 }
1197}
1198
1199void
1200check_earthwalls (object *op, maptile *m, int x, int y)
1201{
1202 for (object *tmp = GET_MAP_OB (m, x, y); tmp; tmp = tmp->above)
1203 if (tmp->type == EARTHWALL)
1438 { 1204 {
1439 m = op->map; 1205 hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1);
1440 sx = op->x + x; 1206 return;
1441 sy = op->y + y;
1442 mflags = get_map_flags (m, &m, sx, sy, &sx, &sy);
1443 /* If nothing alive on this space, no need to search the space. */
1444 if ((mflags & P_OUT_OF_MAP) || !(mflags & P_IS_ALIVE))
1445 continue;
1446
1447 for (npc = get_map_ob (m, sx, sy); npc != NULL; npc = npc->above)
1448 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1449 npc->enemy = op->enemy;
1450 } 1207 }
1451} 1208}
1452 1209
1453
1454int
1455dist_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1456{
1457
1458 if (can_hit (part, enemy, rv))
1459 return dir;
1460 if (rv->distance < 10)
1461 return absdir (dir + 4);
1462 else if (rv->distance > 18)
1463 return dir;
1464 return 0;
1465}
1466
1467int
1468run_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1469{
1470
1471 if ((can_hit (part, enemy, rv) && ob->move_status < 20) || ob->move_status < 20)
1472 {
1473 ob->move_status++;
1474 return (dir);
1475 }
1476 else if (ob->move_status > 20)
1477 ob->move_status = 0;
1478 return absdir (dir + 4);
1479}
1480
1481int
1482hitrun_att (int dir, object *ob, object *enemy)
1483{
1484 if (ob->move_status++ < 25)
1485 return dir;
1486 else if (ob->move_status < 50)
1487 return absdir (dir + 4);
1488 else
1489 ob->move_status = 0;
1490 return absdir (dir + 4);
1491}
1492
1493int
1494wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1495{
1496
1497 int inrange = can_hit (part, enemy, rv);
1498
1499 if (ob->move_status || inrange)
1500 ob->move_status++;
1501
1502 if (ob->move_status == 0)
1503 return 0;
1504 else if (ob->move_status < 10)
1505 return dir;
1506 else if (ob->move_status < 15)
1507 return absdir (dir + 4);
1508 ob->move_status = 0;
1509 return 0;
1510}
1511
1512int
1513disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1514{
1515
1516 /* The logic below here looked plain wrong before. Basically, what should
1517 * happen is that if the creatures hp percentage falls below run_away,
1518 * the creature should run away (dir+4)
1519 * I think its wrong for a creature to have a zero maxhp value, but
1520 * at least one map has this set, and whatever the map contains, the
1521 * server should try to be resilant enough to avoid the problem
1522 */
1523 if (ob->stats.maxhp && (ob->stats.hp * 100) / ob->stats.maxhp < ob->run_away)
1524 return absdir (dir + 4);
1525 return dist_att (dir, ob, enemy, part, rv);
1526}
1527
1528int
1529wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1530{
1531 if (rv->distance < 9)
1532 return absdir (dir + 4);
1533 return 0;
1534}
1535
1536void 1210void
1537circ1_move (object *ob) 1211check_doors (object *op, maptile *m, int x, int y)
1538{ 1212{
1539 static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 }; 1213 for (object *tmp = GET_MAP_OB (m, x, y); tmp; tmp = tmp->above)
1540 if (++ob->move_status > 11) 1214 if (tmp->type == DOOR)
1541 ob->move_status = 0; 1215 {
1542 if (!(move_object (ob, circle[ob->move_status]))) 1216 hit_player (tmp, 1000, op, AT_PHYSICAL, 1);
1543 (void) move_object (ob, RANDOM () % 8 + 1);
1544}
1545
1546void
1547circ2_move (object *ob)
1548{
1549 static int circle[20] = { 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 1, 1, 1, 2, 2 };
1550 if (++ob->move_status > 19)
1551 ob->move_status = 0;
1552 if (!(move_object (ob, circle[ob->move_status])))
1553 (void) move_object (ob, RANDOM () % 8 + 1);
1554}
1555
1556void
1557pace_movev (object *ob)
1558{
1559 if (ob->move_status++ > 6)
1560 ob->move_status = 0;
1561 if (ob->move_status < 4)
1562 (void) move_object (ob, 5);
1563 else
1564 (void) move_object (ob, 1);
1565}
1566
1567void
1568pace_moveh (object *ob)
1569{
1570 if (ob->move_status++ > 6)
1571 ob->move_status = 0;
1572 if (ob->move_status < 4)
1573 (void) move_object (ob, 3);
1574 else
1575 (void) move_object (ob, 7);
1576}
1577
1578void
1579pace2_movev (object *ob)
1580{
1581 if (ob->move_status++ > 16)
1582 ob->move_status = 0;
1583 if (ob->move_status < 6)
1584 (void) move_object (ob, 5);
1585 else if (ob->move_status < 8)
1586 return;
1587 else if (ob->move_status < 13)
1588 (void) move_object (ob, 1);
1589 else
1590 return;
1591}
1592
1593void
1594pace2_moveh (object *ob)
1595{
1596 if (ob->move_status++ > 16)
1597 ob->move_status = 0;
1598 if (ob->move_status < 6)
1599 (void) move_object (ob, 3);
1600 else if (ob->move_status < 8)
1601 return;
1602 else if (ob->move_status < 13)
1603 (void) move_object (ob, 7);
1604 else
1605 return;
1606}
1607
1608void
1609rand_move (object *ob)
1610{
1611 int i;
1612
1613 if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(RANDOM () % 9))))
1614 for (i = 0; i < 5; i++)
1615 if (move_object (ob, ob->move_status = RANDOM () % 8 + 1))
1616 return; 1217 return;
1617}
1618
1619void
1620check_earthwalls (object *op, mapstruct *m, int x, int y)
1621{
1622 object *tmp;
1623
1624 for (tmp = get_map_ob (m, x, y); tmp != NULL; tmp = tmp->above)
1625 {
1626 if (tmp->type == EARTHWALL)
1627 {
1628 hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1);
1629 return;
1630 } 1218 }
1631 }
1632}
1633
1634void
1635check_doors (object *op, mapstruct *m, int x, int y)
1636{
1637 object *tmp;
1638
1639 for (tmp = get_map_ob (m, x, y); tmp != NULL; tmp = tmp->above)
1640 {
1641 if (tmp->type == DOOR)
1642 {
1643 hit_player (tmp, 1000, op, AT_PHYSICAL, 1);
1644 return;
1645 }
1646 }
1647} 1219}
1648 1220
1649/* find_mon_throw_ob() - modeled on find_throw_ob 1221/* find_mon_throw_ob() - modeled on find_throw_ob
1650 * This is probably overly simplistic as it is now - We want 1222 * This is probably overly simplistic as it is now - We want
1651 * monsters to throw things like chairs and other pieces of 1223 * monsters to throw things like chairs and other pieces of
1652 * furniture, even if they are not good throwable objects. 1224 * furniture, even if they are not good throwable objects.
1653 * Probably better to have the monster throw a throwable object 1225 * Probably better to have the monster throw a throwable object
1654 * first, then throw any non equipped weapon. 1226 * first, then throw any non equipped weapon.
1655 */ 1227 */
1656
1657object * 1228object *
1658find_mon_throw_ob (object *op) 1229find_mon_throw_ob (object *op)
1659{ 1230{
1660 object *tmp = NULL; 1231 object *tmp = NULL;
1661 1232
… …
1665 tmp = op; 1236 tmp = op;
1666 1237
1667 /* New throw code: look through the inventory. Grap the first legal is_thrown 1238 /* New throw code: look through the inventory. Grap the first legal is_thrown
1668 * marked item and throw it to the enemy. 1239 * marked item and throw it to the enemy.
1669 */ 1240 */
1670
1671 for (tmp = op->inv; tmp; tmp = tmp->below) 1241 for (tmp = op->inv; tmp; tmp = tmp->below)
1672 { 1242 {
1673
1674 /* Can't throw invisible objects or items that are applied */ 1243 /* Can't throw invisible objects or items that are applied */
1675 if (tmp->invisible || QUERY_FLAG (tmp, FLAG_APPLIED)) 1244 if (tmp->invisible || QUERY_FLAG (tmp, FLAG_APPLIED))
1676 continue; 1245 continue;
1677 1246
1678 if (QUERY_FLAG (tmp, FLAG_IS_THROWN)) 1247 if (QUERY_FLAG (tmp, FLAG_IS_THROWN))
… …
1683#ifdef DEBUG_THROW 1252#ifdef DEBUG_THROW
1684 LOG (llevDebug, "%s chooses to throw: %s (%d)\n", op->name, !(tmp) ? "(nothing)" : query_name (tmp), tmp ? tmp->count : -1); 1253 LOG (llevDebug, "%s chooses to throw: %s (%d)\n", op->name, !(tmp) ? "(nothing)" : query_name (tmp), tmp ? tmp->count : -1);
1685#endif 1254#endif
1686 1255
1687 return tmp; 1256 return tmp;
1257}
1258
1259/*
1260 * Move-monster returns 1 if the object has been freed, otherwise 0.
1261 */
1262int
1263move_monster (object *op)
1264{
1265 int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */
1266 object *owner, *enemy, *part, *oph = op;
1267 rv_vector rv;
1268
1269 /* Monsters not on maps don't do anything. These monsters are things
1270 * Like royal guards in city dwellers inventories.
1271 */
1272 if (!op->map)
1273 return 0;
1274
1275 /* for target facing, we copy this value here for fast access */
1276 if (oph->head) /* force update the head - one arch one pic */
1277 oph = oph->head;
1278
1279 if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */
1280 enemy = op->enemy = NULL;
1281 else if ((enemy = find_enemy (op, &rv)))
1282 /* we have an enemy, just tell him we want him dead */
1283 enemy->attacked_by = op; /* our ptr */
1284
1285 /* generate hp, if applicable */
1286 if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
1287 {
1288 /* last heal is in funny units. Dividing by speed puts
1289 * the regeneration rate on a basis of time instead of
1290 * #moves the monster makes. The scaling by 8 is
1291 * to capture 8th's of a hp fraction regens
1292 *
1293 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
1294 * overflow might produce monsters with negative hp.
1295 */
1296
1297 op->last_heal += (int) ((float) (8 * op->stats.Con) / op->speed);
1298 op->stats.hp = min ((sint32) op->stats.hp + op->last_heal / 32, op->stats.maxhp); /* causes Con/4 hp/tick */
1299 op->last_heal %= 32;
1300
1301 /* So if the monster has gained enough HP that they are no longer afraid */
1302 if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short)(((float)op->run_away / 100.f) * (float)op->stats.maxhp))
1303 CLEAR_FLAG (op, FLAG_RUN_AWAY);
1304
1305 if (op->stats.hp > op->stats.maxhp)
1306 op->stats.hp = op->stats.maxhp;
1307 }
1308
1309 /* generate sp, if applicable */
1310 if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
1311 {
1312 /* last_sp is in funny units. Dividing by speed puts
1313 * the regeneration rate on a basis of time instead of
1314 * #moves the monster makes. The scaling by 8 is
1315 * to capture 8th's of a sp fraction regens
1316 *
1317 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
1318 * overflow might produce monsters with negative sp.
1319 */
1320
1321 op->last_sp += (int) ((float) (8 * op->stats.Pow) / op->speed);
1322 op->stats.sp = min (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
1323 op->last_sp %= 128;
1324 }
1325
1326 /* this should probably get modified by many more values.
1327 * (eg, creatures resistance to fear, level, etc. )
1328 */
1329 if (QUERY_FLAG (op, FLAG_SCARED) && !(rndm (20)))
1330 CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
1331
1332 if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
1333 return QUERY_FLAG (op, FLAG_FREED);
1334
1335 if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
1336 ((op->map->darklevel () > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
1337 if (!check_wakeup (op, enemy, &rv))
1338 return 0;
1339
1340 /* check if monster pops out of hidden spot */
1341 if (op->flag [FLAG_HIDDEN])
1342 do_hidden_move (op);
1343
1344 if (op->pick_up)
1345 monster_check_pickup (op);
1346
1347 if (op->will_apply)
1348 monster_apply_below (op); /* Check for items to apply below */
1349
1350 /* If we don't have an enemy, do special movement or the like */
1351 if (!enemy)
1352 {
1353 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
1354 {
1355 op->drop_and_destroy ();
1356 return 1;
1357 }
1358
1359 /* Probably really a bug for a creature to have both
1360 * stand still and a movement type set.
1361 */
1362 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
1363 {
1364 if (op->attack_movement & HI4)
1365 {
1366 switch (op->attack_movement & HI4)
1367 {
1368 case PETMOVE:
1369 pet_move (op);
1370 break;
1371
1372 case CIRCLE1:
1373 circ1_move (op);
1374 break;
1375
1376 case CIRCLE2:
1377 circ2_move (op);
1378 break;
1379
1380 case PACEV:
1381 pace_movev (op);
1382 break;
1383
1384 case PACEH:
1385 pace_moveh (op);
1386 break;
1387
1388 case PACEV2:
1389 pace2_movev (op);
1390 break;
1391
1392 case PACEH2:
1393 pace2_moveh (op);
1394 break;
1395
1396 case RANDO:
1397 rand_move (op);
1398 break;
1399
1400 case RANDO2:
1401 move_randomly (op);
1402 break;
1403 }
1404
1405 return 0;
1406 }
1407 else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
1408 move_randomly (op);
1409 } /* stand still */
1410
1411 return 0;
1412 } /* no enemy */
1413
1414 /* We have an enemy. Block immediately below is for pets */
1415 if ((op->attack_movement & HI4) == PETMOVE
1416 && (owner = op->owner) != NULL
1417 && !on_same_map (op, owner)
1418 && !owner->flag [FLAG_REMOVED])
1419 return follow_owner (op, owner);
1420
1421 /* doppleganger code to change monster facing to that of the nearest
1422 * player. Hmm. The code is here, but no monster in the current
1423 * arch set uses it.
1424 */
1425 if (op->race == shstr_doppleganger)
1426 {
1427 op->face = enemy->face;
1428 op->name = enemy->name;
1429 }
1430
1431 /* Calculate range information for closest body part - this
1432 * is used for the 'skill' code, which isn't that smart when
1433 * it comes to figuring it out - otherwise, giants throw boulders
1434 * into themselves.
1435 */
1436 get_rangevector (op, enemy, &rv, 0);
1437
1438 /* Move the check for scared up here - if the monster was scared,
1439 * we were not doing any of the logic below, so might as well save
1440 * a few cpu cycles.
1441 */
1442 if (!QUERY_FLAG (op, FLAG_SCARED))
1443 {
1444 rv_vector rv1;
1445
1446 /* now we test every part of an object .... this is a real ugly piece of code */
1447 for (part = op; part; part = part->more)
1448 {
1449 get_rangevector (part, enemy, &rv1, 0x1);
1450 dir = rv1.direction;
1451
1452 /* hm, not sure about this part - in original was a scared flag here too
1453 * but that we test above... so can be old code here
1454 */
1455 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
1456 dir = absdir (dir + 4);
1457
1458 if (QUERY_FLAG (op, FLAG_CONFUSED))
1459 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1460
1461 if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(rndm (3)))
1462 if (monster_cast_spell (op, part, enemy, dir, &rv1))
1463 return 0;
1464
1465 if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(rndm (3)))
1466 if (monster_use_scroll (op, part, enemy, dir, &rv1))
1467 return 0;
1468
1469 if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(rndm (3)))
1470 if (monster_use_range (op, part, enemy, dir))
1471 return 0;
1472
1473 if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(rndm (3)))
1474 if (monster_use_skill (op, rv.part, enemy, rv.direction))
1475 return 0;
1476
1477 if (QUERY_FLAG (op, FLAG_READY_BOW) && !(rndm (2)))
1478 if (monster_use_bow (op, part, enemy, dir))
1479 return 0;
1480 } /* for processing of all parts */
1481 } /* If not scared */
1482
1483 part = rv.part;
1484 dir = rv.direction;
1485
1486//-GPL
1487
1488 // if the enemy is a player, we have los. if los says we
1489 // can directly reach the player, we do not deviate.
1490 // for non-players, we never deviate
1491 if (op->stats.Wis >= 8
1492 && enemy->contr && enemy->contr->darkness_at (op->map, op->x, op->y) == LOS_BLOCKED)
1493 {
1494 int sdir = 0;
1495 uint32_t &smell = op->ms ().smell;
1496
1497 for (int ndir = 1; ndir <= 8; ++ndir)
1498 {
1499 mapxy pos (op); pos.move (ndir);
1500
1501 if (pos.normalise ())
1502 {
1503 mapspace &ms = pos.ms ();
1504
1505 if (ms.smell > smell)
1506 {
1507 //printf ("%s: found smell, following it, apparently (%d, %d)\n",& op->name,op->ms().smell,ms.smell);//D
1508 if (op->stats.Wis >= 10)
1509 smell = ms.smell - 1; // smarter: tell others
1510
1511 sdir = ndir;
1512
1513 // perturbing the path might let the monster lose track,
1514 // but it will also widen the actual path, spreading information
1515 if (op->stats.Wis >= 15 && !rndm (20)) // even smarter, deviate and spread?
1516 sdir = absdir (sdir + 1 - rndm (2) * 2);
1517 }
1518 }
1519 }
1520
1521 if (sdir)
1522 dir = sdir;
1523 else if (smell)
1524 {
1525 // no better smell found, so assume the player jumped, and erase this smell
1526 //printf ("erasing smell %d\n", op->ms ().smell);//D
1527 unordered_mapwalk (op, -1, -1, 1, 1)
1528 m->at (nx, ny).smell = 0;
1529 }
1530 }
1531
1532//+GPL
1533
1534 if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
1535 dir = absdir (dir + 4);
1536
1537 if (QUERY_FLAG (op, FLAG_CONFUSED))
1538 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1539
1540 pre_att_dir = dir; /* remember the original direction */
1541
1542 if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
1543 {
1544 switch (op->attack_movement & LO4)
1545 {
1546 case DISTATT:
1547 dir = dist_att (dir, op, enemy, part, &rv);
1548 break;
1549
1550 case RUNATT:
1551 dir = run_att (dir, op, enemy, part, &rv);
1552 break;
1553
1554 case HITRUN:
1555 dir = hitrun_att (dir, op, enemy);
1556 break;
1557
1558 case WAITATT:
1559 dir = wait_att (dir, op, enemy, part, &rv);
1560 break;
1561
1562 case RUSH: /* default - monster normally moves towards player */
1563 case ALLRUN:
1564 break;
1565
1566 case DISTHIT:
1567 dir = disthit_att (dir, op, enemy, part, &rv);
1568 break;
1569
1570 case WAIT2:
1571 dir = wait_att2 (dir, op, enemy, part, &rv);
1572 break;
1573
1574 default:
1575 LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
1576 }
1577 }
1578
1579 if (!dir)
1580 return 0;
1581
1582 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
1583 {
1584 if (move_object (op, dir)) /* Can the monster move directly toward player? */
1585 {
1586 /* elmex: Turn our monster after it moved if it has DISTATT attack */
1587 if ((op->attack_movement & LO4) == DISTATT)
1588 op->direction = pre_att_dir;
1589
1590 return 0;
1591 }
1592
1593 if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
1594 {
1595 /* Try move around corners if !close */
1596 int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || rndm (2)) ? 1 : 2;
1597
1598 for (diff = 1; diff <= maxdiff; diff++)
1599 {
1600 /* try different detours */
1601 int m = 1 - rndm (2) * 2; /* Try left or right first? */
1602
1603 if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
1604 return 0;
1605 }
1606 }
1607 } /* if monster is not standing still */
1608
1609 /* elmex: Turn our monster after it moved if it has DISTATT attack */
1610 if ((op->attack_movement & LO4) == DISTATT)
1611 op->direction = pre_att_dir;
1612
1613 /*
1614 * Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
1615 * direction if they can't move away.
1616 */
1617 if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
1618 if (move_randomly (op))
1619 return 0;
1620
1621 /*
1622 * Try giving the monster a new enemy - the player that is closest
1623 * to it. In this way, it won't just keep trying to get to a target
1624 * that is inaccessible.
1625 * This could be more clever - it should go through a list of several
1626 * enemies, as it is now, you could perhaps get situations where there
1627 * are two players flanking the monster at close distance, but which
1628 * the monster can't get to, and a third one at a far distance that
1629 * the monster could get to - as it is, the monster won't look at that
1630 * third one.
1631 */
1632 if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
1633 {
1634 object *nearest_player = get_nearest_player (op);
1635
1636 if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
1637 {
1638 op->enemy = 0;
1639 enemy = nearest_player;
1640 }
1641 }
1642
1643 if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
1644 {
1645 /* The adjustement to wc that was here before looked totally bogus -
1646 * since wc can in fact get negative, that would mean by adding
1647 * the current wc, the creature gets better? Instead, just
1648 * add a fixed amount - nasty creatures that are runny away should
1649 * still be pretty nasty.
1650 */
1651 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
1652 {
1653 part->stats.wc += 10;
1654 skill_attack (enemy, part, 0, NULL, NULL);
1655 part->stats.wc -= 10;
1656 }
1657 else
1658 skill_attack (enemy, part, 0, NULL, NULL);
1659 } /* if monster is in attack range */
1660
1661 if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
1662 return 1;
1663
1664 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
1665 {
1666 op->drop_and_destroy ();
1667 return 1;
1668 }
1669
1670 return 0;
1688} 1671}
1689 1672
1690/* determine if we can 'detect' the enemy. Check for walls blocking the 1673/* determine if we can 'detect' the enemy. Check for walls blocking the
1691 * los. Also, just because its hidden/invisible, we may be sensitive/smart 1674 * los. Also, just because its hidden/invisible, we may be sensitive/smart
1692 * enough (based on Wis & Int) to figure out where the enemy is. -b.t. 1675 * enough (based on Wis & Int) to figure out where the enemy is. -b.t.
… …
1694 * properly. I also so odd code in place that checked for x distance 1677 * properly. I also so odd code in place that checked for x distance
1695 * OR y distance being within some range - that seemed wrong - both should 1678 * OR y distance being within some range - that seemed wrong - both should
1696 * be within the valid range. MSW 2001-08-05 1679 * be within the valid range. MSW 2001-08-05
1697 * Returns 0 if enemy can not be detected, 1 if it is detected 1680 * Returns 0 if enemy can not be detected, 1 if it is detected
1698 */ 1681 */
1699
1700int 1682int
1701can_detect_enemy (object *op, object *enemy, rv_vector * rv) 1683can_detect_enemy (object *op, object *enemy, rv_vector * rv)
1702{ 1684{
1703 int radius = MIN_MON_RADIUS, hide_discovery;
1704
1705 /* null detection for any of these condtions always */ 1685 /* null detection for any of these condtions always */
1706 if (!op || !enemy || !op->map || !enemy->map) 1686 if (!op || !enemy || !op->map || !enemy->map)
1707 return 0; 1687 return 0;
1708 1688
1709 /* If the monster (op) has no way to get to the enemy, do nothing */ 1689 /* If the monster (op) has no way to get to the enemy, do nothing */
… …
1711 return 0; 1691 return 0;
1712 1692
1713 get_rangevector (op, enemy, rv, 0); 1693 get_rangevector (op, enemy, rv, 0);
1714 1694
1715 /* Monsters always ignore the DM */ 1695 /* Monsters always ignore the DM */
1716 if ((op->type != PLAYER) && QUERY_FLAG (enemy, FLAG_WIZ)) 1696 if (!op->is_player () && QUERY_FLAG (enemy, FLAG_WIZ))
1717 return 0; 1697 return 0;
1718 1698
1719 /* simple check. Should probably put some range checks in here. */ 1699 /* simple check. Should probably put some range checks in here. */
1720 if (can_see_enemy (op, enemy)) 1700 if (can_see_enemy (op, enemy))
1721 return 1; 1701 return 1;
1722 1702
1723 /* The rest of this is for monsters. Players are on their own for 1703 /* The rest of this is for monsters. Players are on their own for
1724 * finding enemies! 1704 * finding enemies!
1725 */ 1705 */
1726 if (op->type == PLAYER) 1706 if (op->is_player ())
1727 return 0; 1707 return 0;
1728 1708
1729 /* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE 1709 /* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE
1730 * flag (which was already checked) in can_see_enmy (). Lets get out of here 1710 * flag (which was already checked) in can_see_enemy (). Lets get out of here
1731 */ 1711 */
1732 if (enemy->invisible && (!enemy->contr || (!enemy->contr->tmp_invis && !enemy->contr->hidden))) 1712 if (enemy->invisible && (!enemy->contr || (!enemy->contr->tmp_invis && !enemy->contr->hidden)))
1733 return 0; 1713 return 0;
1734 1714
1715 int radius = MIN_MON_RADIUS;
1716
1735 /* use this for invis also */ 1717 /* use this for invis also */
1736 hide_discovery = op->stats.Int / 5; 1718 int hide_discovery = op->stats.Int / 5;
1737 1719
1738 /* Determine Detection radii */ 1720 /* Determine Detection radii */
1739 if (!enemy->hide) /* to detect non-hidden (eg dark/invis enemy) */ 1721 if (!enemy->flag [FLAG_HIDDEN]) /* to detect non-hidden (eg dark/invis enemy) */
1740 radius = (op->stats.Wis / 5) + 1 > MIN_MON_RADIUS ? (op->stats.Wis / 5) + 1 : MIN_MON_RADIUS; 1722 radius = max (MIN_MON_RADIUS, op->stats.Wis / 3 + 1);
1741 else 1723 else
1742 { /* a level/INT/Dex adjustment for hiding */ 1724 { /* a level/INT/Dex adjustment for hiding */
1743 object *sk_hide;
1744 int bonus = (op->level / 2) + (op->stats.Int / 5); 1725 int bonus = op->level / 2 + op->stats.Int / 5;
1745 1726
1746 if (enemy->type == PLAYER) 1727 if (enemy->is_player ())
1747 { 1728 {
1748 if ((sk_hide = find_skill_by_number (enemy, SK_HIDING))) 1729 if (object *sk_hide = find_skill_by_number (enemy, SK_HIDING))
1749 bonus -= sk_hide->level; 1730 bonus -= sk_hide->level;
1750 else 1731 else
1751 { 1732 {
1752 LOG (llevError, "can_detect_enemy() got hidden player w/o hiding skill!\n"); 1733 LOG (llevError, "can_detect_enemy() got hidden player w/o hiding skill!\n");
1753 make_visible (enemy); 1734 make_visible (enemy);
… …
1762 } /* else creature has modifiers for hiding */ 1743 } /* else creature has modifiers for hiding */
1763 1744
1764 /* Radii stealth adjustment. Only if you are stealthy 1745 /* Radii stealth adjustment. Only if you are stealthy
1765 * will you be able to sneak up closer to creatures */ 1746 * will you be able to sneak up closer to creatures */
1766 if (QUERY_FLAG (enemy, FLAG_STEALTH)) 1747 if (QUERY_FLAG (enemy, FLAG_STEALTH))
1767 radius = radius / 2, hide_discovery = hide_discovery / 3; 1748 {
1749 radius /= 2;
1750 hide_discovery /= 3;
1751 }
1768 1752
1769 /* Radii adjustment for enemy standing in the dark */ 1753 /* Radii adjustment for enemy standing in the dark */
1770 if (op->map->darkness > 0 && !stand_in_light (enemy)) 1754 if (!stand_in_light (enemy))
1771 { 1755 {
1772 /* on dark maps body heat can help indicate location with infravision 1756 /* on dark maps body heat can help indicate location with infravision
1773 * undead don't have body heat, so no benefit detecting them. 1757 * undead don't have body heat, so no benefit detecting them.
1774 */ 1758 */
1775 if (QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !is_true_undead (enemy)) 1759 if (QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !is_true_undead (enemy))
1776 radius += op->map->darkness / 2; 1760 radius += op->map->darklevel () / 2;
1777 else 1761 else
1778 radius -= op->map->darkness / 2; 1762 radius -= op->map->darklevel () / 2;
1779 1763
1780 /* op next to a monster (and not in complete darkness) 1764 /* op next to a monster (and not in complete darkness)
1781 * the monster should have a chance to see you. 1765 * the monster should have a chance to see you.
1782 */ 1766 */
1783 if (radius < MIN_MON_RADIUS && op->map->darkness < 5 && rv->distance <= 1) 1767 if (radius < MIN_MON_RADIUS && op->map->darklevel () < MAX_DARKNESS && rv->distance <= 1)
1784 radius = MIN_MON_RADIUS; 1768 radius = MIN_MON_RADIUS;
1785 } /* if on dark map */ 1769 } /* if on dark map */
1786 1770
1787 /* Lets not worry about monsters that have incredible detection 1771 /* Lets not worry about monsters that have incredible detection
1788 * radii, we only need to worry here about things the player can 1772 * radii, we only need to worry here about things the player can
… …
1790 * may have for their map - in that way, creatures at the edge will 1774 * may have for their map - in that way, creatures at the edge will
1791 * do something. Note that the distance field in the 1775 * do something. Note that the distance field in the
1792 * vector is real distance, so in theory this should be 18 to 1776 * vector is real distance, so in theory this should be 18 to
1793 * find that. 1777 * find that.
1794 */ 1778 */
1795 if (radius > 13) 1779 // note that the above reasoning was utter bullshit even at the time it was written
1796 radius = 13; 1780 // we use 25, lets see if we have the cpu time for it
1781 radius = min (25, radius);
1797 1782
1798 /* Enemy in range! Now test for detection */ 1783 /* Enemy in range! Now test for detection */
1799 if ((int) rv->distance <= radius) 1784 if (rv->distance <= radius)
1800 { 1785 {
1801 /* ah, we are within range, detected? take cases */ 1786 /* ah, we are within range, detected? take cases */
1802 if (!enemy->invisible) /* enemy in dark squares... are seen! */ 1787 if (!enemy->invisible) /* enemy in dark squares... are seen! */
1803 return 1; 1788 return 1;
1804 1789
1805 /* hidden or low-quality invisible */ 1790 /* hidden or low-quality invisible */
1806 if (enemy->hide && (rv->distance <= 1) && (RANDOM () % 100 <= hide_discovery)) 1791 if (enemy->flag [FLAG_HIDDEN] && rv->distance <= 1 && rndm (100) <= hide_discovery)
1807 { 1792 {
1808 make_visible (enemy); 1793 make_visible (enemy);
1794
1809 /* inform players of new status */ 1795 /* inform players of new status */
1810 if (enemy->type == PLAYER && player_can_view (enemy, op)) 1796 if (enemy->type == PLAYER && player_can_view (enemy, op))
1811 new_draw_info_format (NDI_UNIQUE, 0, enemy, "You are discovered by %s!", &op->name); 1797 new_draw_info_format (NDI_UNIQUE, 0, enemy, "You are discovered by %s!", &op->name);
1798
1812 return 1; /* detected enemy */ 1799 return 1; /* detected enemy */
1813 } 1800 }
1814 else if (enemy->invisible) 1801 else if (enemy->invisible)
1815 { 1802 {
1816 /* Change this around - instead of negating the invisible, just 1803 /* Change this around - instead of negating the invisible, just
1817 * return true so that the mosnter that managed to detect you can 1804 * return true so that the monster that managed to detect you can
1818 * do something to you. Decreasing the duration of invisible 1805 * do something to you. Decreasing the duration of invisible
1819 * doesn't make a lot of sense IMO, as a bunch of stupid creatures 1806 * doesn't make a lot of sense IMO, as a bunch of stupid creatures
1820 * can then basically negate the spell. The spell isn't negated - 1807 * can then basically negate the spell. The spell isn't negated -
1821 * they just know where you are! 1808 * they just know where you are!
1822 */ 1809 */
1823 if ((RANDOM () % 50) <= hide_discovery) 1810 if (rndm (50) <= hide_discovery)
1824 { 1811 {
1825 if (enemy->type == PLAYER) 1812 if (enemy->type == PLAYER)
1826 {
1827 new_draw_info_format (NDI_UNIQUE, 0, enemy, "You see %s noticing your position.", query_name (op)); 1813 new_draw_info_format (NDI_UNIQUE, 0, enemy, "You see %s noticing your position.", query_name (op));
1828 } 1814
1829 return 1; 1815 return 1;
1830 } 1816 }
1831 } 1817 }
1832 } /* within range */ 1818 } /* within range */
1833 1819
1834 /* Wasn't detected above, so still hidden */ 1820 /* Wasn't detected above, so still hidden */
1835 return 0; 1821 return 0;
1836} 1822}
1837 1823
1838/* determine if op stands in a lighted square. This is not a very 1824/* determine if op stands in a lighted square. This is not a very
1839 * intellegent algorithm. For one thing, we ignore los here, SO it 1825 * intelligent algorithm. For one thing, we ignore los here, SO it
1840 * is possible for a bright light to illuminate a player on the 1826 * is possible for a bright light to illuminate a player on the
1841 * other side of a wall (!). 1827 * other side of a wall (!).
1842 */ 1828 */
1843
1844int 1829int
1845stand_in_light (object *op) 1830stand_in_light (object *op)
1846{ 1831{
1847 sint16 nx, ny;
1848 mapstruct *m;
1849
1850
1851 if (!op) 1832 if (op)
1833 {
1834 if (!op->is_on_map ())
1852 return 0; 1835 return 0;
1836
1837 if (op->map->darklevel () <= 0)
1838 return 1;
1839
1853 if (op->glow_radius > 0) 1840 if (op->glow_radius > 0)
1854 return 1; 1841 return 1;
1855 1842
1856 if (op->map) 1843 if (op->map)
1857 { 1844 unordered_mapwalk (op, -MAX_LIGHT_RADIUS, -MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS)
1858 int x, y, x1, y1; 1845 {
1859
1860
1861
1862 /* Check the spaces with the max light radius to see if any of them 1846 /* Check the spaces with the max light radius to see if any of them
1863 * have lights, and if any of them light the player enough, then return 1. 1847 * have lights, and if any of them light the player enough, then return 1.
1864 */
1865 for (x = op->x - MAX_LIGHT_RADII; x <= op->x + MAX_LIGHT_RADII; x++)
1866 {
1867 for (y = op->y - MAX_LIGHT_RADII; y <= op->y + MAX_LIGHT_RADII; y++)
1868 { 1848 */
1869 m = op->map; 1849 int light = m->at (nx, ny).light;
1870 nx = x;
1871 ny = y;
1872 1850
1873 if (get_map_flags (m, &m, nx, ny, &nx, &ny) & P_OUT_OF_MAP) 1851 if (expect_false (light > 0) && idistance (dx, dy) <= light)
1874 continue;
1875
1876 x1 = abs (x - op->x) * abs (x - op->x);
1877 y1 = abs (y - op->y) * abs (y - op->y);
1878 if (isqrt (x1 + y1) < GET_MAP_LIGHT (m, nx, ny))
1879 return 1; 1852 return 1;
1880 } 1853 }
1881 }
1882 } 1854 }
1855
1883 return 0; 1856 return 0;
1884} 1857}
1885
1886 1858
1887/* assuming no walls/barriers, lets check to see if its *possible* 1859/* assuming no walls/barriers, lets check to see if its *possible*
1888 * to see an enemy. Note, "detection" is different from "seeing". 1860 * to see an enemy. Note, "detection" is different from "seeing".
1889 * See can_detect_enemy() for more details. -b.t. 1861 * See can_detect_enemy() for more details. -b.t.
1890 * return 0 if can't be seen, 1 if can be 1862 * return 0 if can't be seen, 1 if can be
1891 */ 1863 */
1892
1893int 1864int
1894can_see_enemy (object *op, object *enemy) 1865can_see_enemy (object *op, object *enemy)
1895{ 1866{
1896 object *looker = op->head ? op->head : op; 1867 object *looker = op->head ? op->head : op;
1897 1868
… …
1911 { 1882 {
1912 /* HIDDEN ENEMY. by definition, you can't see hidden stuff! 1883 /* HIDDEN ENEMY. by definition, you can't see hidden stuff!
1913 * However,if you carry any source of light, then the hidden 1884 * However,if you carry any source of light, then the hidden
1914 * creature is seeable (and stupid) */ 1885 * creature is seeable (and stupid) */
1915 1886
1916 if (has_carried_lights (enemy)) 1887 if (enemy->has_carried_lights ())
1917 { 1888 {
1918 if (enemy->hide) 1889 if (enemy->flag [FLAG_HIDDEN])
1919 { 1890 {
1920 make_visible (enemy); 1891 make_visible (enemy);
1921 new_draw_info (NDI_UNIQUE, 0, enemy, "Your light reveals your hiding spot!"); 1892 new_draw_info (NDI_UNIQUE, 0, enemy, "Your light reveals your hiding spot!");
1922 } 1893 }
1894
1923 return 1; 1895 return 1;
1924 } 1896 }
1925 else if (enemy->hide) 1897 else if (enemy->flag [FLAG_HIDDEN])
1926 return 0; 1898 return 0;
1927 1899
1928 /* Invisible enemy. Break apart the check for invis undead/invis looker 1900 /* Invisible enemy. Break apart the check for invis undead/invis looker
1929 * into more simple checks - the QUERY_FLAG doesn't return 1/0 values, 1901 * into more simple checks - the QUERY_FLAG doesn't return 1/0 values,
1930 * and making it a conditional makes the code pretty ugly. 1902 * and making it a conditional makes the code pretty ugly.
1931 */ 1903 */
1932 if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE)) 1904 if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE))
1933 {
1934 if (makes_invisible_to (enemy, looker)) 1905 if (makes_invisible_to (enemy, looker))
1935 return 0; 1906 return 0;
1936 }
1937 } 1907 }
1938 else if (looker->type == PLAYER) /* for players, a (possible) shortcut */ 1908 else if (looker->is_player ()) /* for players, a (possible) shortcut */
1939 if (player_can_view (looker, enemy)) 1909 if (player_can_view (looker, enemy))
1940 return 1; 1910 return 1;
1941 1911
1942 /* ENEMY IN DARK MAP. Without infravision, the enemy is not seen 1912 /* ENEMY IN DARK MAP. Without infravision, the enemy is not seen
1943 * unless they carry a light or stand in light. Darkness doesnt 1913 * unless they carry a light or stand in light. Darkness doesnt
… …
1946 * we care about the enemy maps status, not the looker. 1916 * we care about the enemy maps status, not the looker.
1947 * only relevant for tiled maps, but it is possible that the 1917 * only relevant for tiled maps, but it is possible that the
1948 * enemy is on a bright map and the looker on a dark - in that 1918 * enemy is on a bright map and the looker on a dark - in that
1949 * case, the looker can still see the enemy 1919 * case, the looker can still see the enemy
1950 */ 1920 */
1951 if (enemy->map->darkness > 0 && !stand_in_light (enemy) 1921 if (!stand_in_light (enemy)
1952 && (!QUERY_FLAG (looker, FLAG_SEE_IN_DARK) || !is_true_undead (looker) || !QUERY_FLAG (looker, FLAG_XRAYS))) 1922 && (!QUERY_FLAG (looker, FLAG_SEE_IN_DARK) || !is_true_undead (looker) || !QUERY_FLAG (looker, FLAG_XRAYS)))
1953 return 0; 1923 return 0;
1954 1924
1955 return 1; 1925 return 1;
1956} 1926}
1927
1928//-GPL

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