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Comparing deliantra/server/server/monster.C (file contents):
Revision 1.22 by pippijn, Mon Jan 15 21:06:20 2007 UTC vs.
Revision 1.72 by root, Fri Nov 6 12:27:06 2009 UTC

1/* 1/*
2 * CrossFire, A Multiplayer game for X-windows 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 * 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * Copyright (C) 2002 Mark Wedel & Crossfire Development Team 5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6 * Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * Deliantra is free software: you can redistribute it and/or modify it under
9 * it under the terms of the GNU General Public License as published by 9 * the terms of the Affero GNU General Public License as published by the
10 * the Free Software Foundation; either version 2 of the License, or 10 * Free Software Foundation, either version 3 of the License, or (at your
11 * (at your option) any later version. 11 * option) any later version.
12 * 12 *
13 * This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details. 16 * GNU General Public License for more details.
17 * 17 *
18 * You should have received a copy of the GNU General Public License 18 * You should have received a copy of the Affero GNU General Public License
19 * along with this program; if not, write to the Free Software 19 * and the GNU General Public License along with this program. If not, see
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * <http://www.gnu.org/licenses/>.
21 * 21 *
22 * The authors can be reached via e-mail at <crossfire@schmorp.de> 22 * The authors can be reached via e-mail to <support@deliantra.net>
23 */ 23 */
24
25//+GPL
24 26
25#include <global.h> 27#include <global.h>
26#include <sproto.h> 28#include <sproto.h>
27#include <spells.h> 29#include <spells.h>
28#include <skills.h> 30#include <skills.h>
… …
36 * set to sane values. 38 * set to sane values.
37 */ 39 */
38object * 40object *
39check_enemy (object *npc, rv_vector * rv) 41check_enemy (object *npc, rv_vector * rv)
40{ 42{
41
42 /* 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
43 * 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,
44 * which CAN attack the owner. */ 45 * which CAN attack the owner. */
45 if ((npc->attack_movement & HI4) == PETMOVE) 46 if ((npc->attack_movement & HI4) == PETMOVE)
46 { 47 {
… …
48 npc->enemy = NULL; 49 npc->enemy = NULL;
49 else if (npc->enemy == NULL) 50 else if (npc->enemy == NULL)
50 npc->enemy = npc->owner->enemy; 51 npc->enemy = npc->owner->enemy;
51 } 52 }
52 53
53 /* periodically, a monster mayu change its target. Also, if the object 54 /* periodically, a monster may change its target. Also, if the object
54 * has been destroyed, etc, clear the enemy. 55 * has been destroyed, etc, clear the enemy.
55 * 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
56 * attacked monsters to leave the attacker alone, before it is destroyed 57 * attacked monsters to leave the attacker alone, before it is destroyed
57 */ 58 */
58 /* 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
59 * 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
60 * again then but perhaps get attack on and on 61 * again then but perhaps get attack on and on
61 * 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
62 * too. */ 63 * too. */
63 64
… …
67 * the grouping checks are. Code is the same. 68 * the grouping checks are. Code is the same.
68 */ 69 */
69 if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) || 70 if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) ||
70 QUERY_FLAG (npc->enemy, FLAG_FREED) || 71 QUERY_FLAG (npc->enemy, FLAG_FREED) ||
71 !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))
72 npc->enemy = NULL; 73 npc->enemy = 0;
73 74
74 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)
75 && !(should_arena_attack (npc, npc->owner, npc->enemy))) 76 && !(should_arena_attack (npc, npc->owner, npc->enemy)))
76 || ((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)))
77 || npc->enemy == npc->owner)) 78 || npc->enemy == npc->owner))
78 npc->enemy = NULL; 79 npc->enemy = 0;
79 80
80 81
81 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))
82 npc->enemy = NULL; 83 npc->enemy = 0;
83 84
84 /* 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
85 * target enemy - this code below makes sure the enemy is something 86 * target enemy - this code below makes sure the enemy is something
86 * that should be attacked. My guess is that the arrow hits 87 * that should be attacked. My guess is that the arrow hits
87 * the creature/owner, and so the creature then takes that 88 * the creature/owner, and so the creature then takes that
88 * as the enemy to attack. 89 * as the enemy to attack.
89 */ 90 */
90 else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER) && 91 else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER)
91 !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)
92 npc->enemy = NULL; 95 npc->enemy = 0;
93
94 } 96 }
97
95 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : NULL; 98 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : 0;
96} 99}
97 100
98/* Returns the nearest living creature (monster or generator). 101/* Returns the nearest living creature (monster or generator).
99 * Modified to deal with tiled maps properly. 102 * Modified to deal with tiled maps properly.
100 * 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
… …
143 } 146 }
144 147
145 return 0; 148 return 0;
146} 149}
147 150
148
149/* 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
150 * our caller will find the information useful. 152 * our caller will find the information useful.
151 * Currently, only move_monster calls this function. 153 * Currently, only move_monster calls this function.
152 * Fix function so that we always make calls to get_rangevector 154 * Fix function so that we always make calls to get_rangevector
153 * 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
154 * many cases. 156 * many cases.
155 */ 157 */
156
157object * 158object *
158find_enemy (object *npc, rv_vector * rv) 159find_enemy (object *npc, rv_vector * rv)
159{ 160{
160 object *attacker, *tmp = NULL; 161 object *attacker, *tmp = NULL;
161 162
… …
167 { 168 {
168 tmp = find_nearest_living_creature (npc); 169 tmp = find_nearest_living_creature (npc);
169 170
170 if (tmp) 171 if (tmp)
171 get_rangevector (npc, tmp, rv, 0); 172 get_rangevector (npc, tmp, rv, 0);
173
172 return tmp; 174 return tmp;
173 } 175 }
174 176
175 /* Here is the main enemy selection. 177 /* Here is the main enemy selection.
176 * 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
… …
196 /* we check our old enemy. */ 198 /* we check our old enemy. */
197 if (!(tmp = check_enemy (npc, rv))) 199 if (!(tmp = check_enemy (npc, rv)))
198 { 200 {
199 if (attacker) /* if we have an attacker, check him */ 201 if (attacker) /* if we have an attacker, check him */
200 { 202 {
201 /* TODO: thats not finished */ 203 /* TODO: that's not finished */
202 /* 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 */
203 205
204 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 */
205 (QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) || 207 (QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) ||
206 (!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)))
207 CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */ 209 CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */
208 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... */
209 { 211 {
210 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! */
211 npc->enemy = attacker; 213 npc->enemy = attacker;
212 return attacker; /* yes, we face our attacker! */ 214 return attacker; /* yes, we face our attacker! */
213 } 215 }
… …
229/* Sees if this monster should wake up. 231/* Sees if this monster should wake up.
230 * Currently, this is only called from move_monster, and 232 * Currently, this is only called from move_monster, and
231 * if enemy is set, then so should be rv. 233 * if enemy is set, then so should be rv.
232 * returns 1 if the monster should wake up, 0 otherwise. 234 * returns 1 if the monster should wake up, 0 otherwise.
233 */ 235 */
234
235int 236int
236check_wakeup (object *op, object *enemy, rv_vector * rv) 237check_wakeup (object *op, object *enemy, rv_vector *rv)
237{ 238{
238 int radius = op->stats.Wis > MIN_MON_RADIUS ? op->stats.Wis : MIN_MON_RADIUS;
239
240 /* Trim work - if no enemy, no need to do anything below */ 239 /* Trim work - if no enemy, no need to do anything below */
241 if (!enemy) 240 if (!enemy)
242 return 0; 241 return 0;
243 242
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])
244 /* blinded monsters can only find nearby objects to attack */ 249 /* blinded monsters can only find nearby objects to attack */
245 if (QUERY_FLAG (op, FLAG_BLIND))
246 radius = MIN_MON_RADIUS; 250 radius = MIN_MON_RADIUS;
247 251 else if (op->map
252 && !enemy->invisible
253 && !stand_in_light (enemy)
254 && (!op->flag[FLAG_SEE_IN_DARK] || !op->flag [FLAG_SEE_INVISIBLE]))
248 /* This covers the situation where the monster is in the dark 255 /* This covers the situation where the monster is in the dark
249 * 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
250 * glowing!) then the monster has trouble finding the enemy. 257 * glowing!) then the monster has trouble finding the enemy.
251 * 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
252 * the dark. */ 259 * the dark. */
260 radius = min (radius, MIN_MON_RADIUS + MAX_DARKNESS - op->map->darklevel ());
253 261
254 else if (op->map && op->map->darkness > 0 && enemy && !enemy->invisible && 262 if (enemy->flag [FLAG_STEALTH])
255 !stand_in_light (enemy) && (!QUERY_FLAG (op, FLAG_SEE_IN_DARK) || !QUERY_FLAG (op, FLAG_SEE_INVISIBLE))) 263 radius = radius / 2 + 1;
256 {
257 int dark = radius / (op->map->darkness);
258
259 radius = (dark > MIN_MON_RADIUS) ? (dark + 1) : MIN_MON_RADIUS;
260 }
261 else if (!QUERY_FLAG (op, FLAG_SLEEP))
262 return 1;
263 264
264 /* 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
265 * for that. 266 * for that.
266 */ 267 */
267 if (rv->distance < (unsigned int) (QUERY_FLAG (enemy, FLAG_STEALTH) ? (radius / 2) + 1 : radius)) 268 if (rv->distance <= radius)
268 { 269 {
269 CLEAR_FLAG (op, FLAG_SLEEP); 270 CLEAR_FLAG (op, FLAG_SLEEP);
270 return 1; 271 return 1;
271 } 272 }
273
272 return 0; 274 return 0;
273} 275}
274 276
275int 277int
276move_randomly (object *op) 278move_randomly (object *op)
277{ 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;
278 int i; 298 int i;
279 299
280 /* Give up to 15 chances for a monster to move randomly */ 300 if (!can_pick (monster, item))
281 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)
282 { 311 {
283 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)))
284 return 1; 376 return 1;
285 } 377
286 return 0; 378 return 0;
287} 379}
288 380
289/* 381/*
290 * 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.
291 */ 395 */
292 396static void
293int 397monster_check_pickup (object *monster)
294move_monster (object *op)
295{ 398{
296 int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */ 399 object *tmp, *next;
297 object *owner, *enemy, *part, *oph = op;
298 rv_vector rv;
299 400
300 /* Monsters not on maps don't do anything. These monsters are things 401 for (tmp = monster->below; tmp != NULL; tmp = next)
301 * Like royal guards in city dwellers inventories.
302 */
303 if (!op->map)
304 return 0;
305
306 /* for target facing, we copy this value here for fast access */
307 if (oph->head) /* force update the head - one arch one pic */
308 oph = oph->head;
309
310 if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */
311 enemy = op->enemy = NULL;
312 else if ((enemy = find_enemy (op, &rv)))
313 /* we have an enemy, just tell him we want him dead */
314 enemy->attacked_by = op; /* our ptr */
315
316 /* generate hp, if applicable */
317 if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
318 { 402 {
319 403 next = tmp->below;
320 /* last heal is in funny units. Dividing by speed puts 404 if (monster_can_pick (monster, tmp))
321 * the regeneration rate on a basis of time instead of
322 * #moves the monster makes. The scaling by 8 is
323 * to capture 8th's of a hp fraction regens
324 * 405 {
325 * Cast to sint32 before comparing to maxhp since otherwise an (sint16) 406 tmp->remove ();
326 * 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.
327 */ 412 */
328 413 if (next && next->destroyed ())
329 op->last_heal += (int) ((float) (8 * op->stats.Con) / FABS (op->speed));
330 op->stats.hp = MIN ((sint32) op->stats.hp + op->last_heal / 32, op->stats.maxhp); /* causes Con/4 hp/tick */
331 op->last_heal %= 32;
332
333 /* So if the monster has gained enough HP that they are no longer afraid */
334 if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short) (((float) op->run_away / (float) 100) * (float) op->stats.maxhp))
335 CLEAR_FLAG (op, FLAG_RUN_AWAY);
336
337 if (op->stats.hp > op->stats.maxhp)
338 op->stats.hp = op->stats.maxhp;
339 }
340
341 /* generate sp, if applicable */
342 if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
343 {
344
345 /* last_sp is in funny units. Dividing by speed puts
346 * the regeneration rate on a basis of time instead of
347 * #moves the monster makes. The scaling by 8 is
348 * to capture 8th's of a sp fraction regens
349 *
350 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
351 * overflow might produce monsters with negative sp.
352 */
353
354 op->last_sp += (int) ((float) (8 * op->stats.Pow) / FABS (op->speed));
355 op->stats.sp = MIN (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
356 op->last_sp %= 128;
357 }
358
359 /* this should probably get modified by many more values.
360 * (eg, creatures resistance to fear, level, etc. )
361 */
362 if (QUERY_FLAG (op, FLAG_SCARED) && !(RANDOM () % 20))
363 {
364 CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
365 }
366
367 if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
368 return QUERY_FLAG (op, FLAG_FREED);
369
370 if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
371 ((op->map->darkness > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
372 {
373 if (!check_wakeup (op, enemy, &rv))
374 return 0; 414 return;
375 }
376
377 /* check if monster pops out of hidden spot */
378 if (op->hide)
379 do_hidden_move (op);
380
381 if (op->pick_up)
382 monster_check_pickup (op);
383
384 if (op->will_apply)
385 monster_apply_below (op); /* Check for items to apply below */
386
387 /* If we don't have an enemy, do special movement or the like */
388 if (!enemy)
389 { 415 }
390 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK)) 416}
391 { 417
392 op->destroy (); 418/*
393 return 1; 419 * monster_apply_below():
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)
394 } 433 {
395 434 case T_HANDLE:
396 /* Probably really a bug for a creature to have both
397 * stand still and a movement type set.
398 */
399 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
400 {
401 if (op->attack_movement & HI4)
402 {
403 switch (op->attack_movement & HI4)
404 {
405 case (PETMOVE):
406 pet_move (op);
407 break;
408
409 case (CIRCLE1):
410 circ1_move (op);
411 break;
412
413 case (CIRCLE2):
414 circ2_move (op);
415 break;
416
417 case (PACEV):
418 pace_movev (op);
419 break;
420
421 case (PACEH):
422 pace_moveh (op);
423 break;
424
425 case (PACEV2):
426 pace2_movev (op);
427 break;
428
429 case (PACEH2):
430 pace2_moveh (op);
431 break;
432
433 case (RANDO):
434 rand_move (op);
435 break;
436
437 case (RANDO2):
438 move_randomly (op);
439 break;
440 }
441 return 0;
442 }
443 else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
444 (void) move_randomly (op);
445
446 } /* stand still */
447 return 0;
448 } /* no enemy */
449
450 /* We have an enemy. Block immediately below is for pets */
451 if ((op->attack_movement & HI4) == PETMOVE && (owner = op->owner) != NULL && !on_same_map (op, owner))
452 return follow_owner (op, owner);
453
454 /* doppleganger code to change monster facing to that of the nearest
455 * player. Hmm. The code is here, but no monster in the current
456 * arch set uses it.
457 */
458 if ((op->race != NULL) && strcmp (op->race, "doppleganger") == 0)
459 {
460 op->face = enemy->face;
461 op->name = enemy->name;
462 }
463
464 /* Calculate range information for closest body part - this
465 * is used for the 'skill' code, which isn't that smart when
466 * it comes to figuring it out - otherwise, giants throw boulders
467 * into themselves.
468 */
469 get_rangevector (op, enemy, &rv, 0);
470
471 /* Move the check for scared up here - if the monster was scared,
472 * we were not doing any of the logic below, so might as well save
473 * a few cpu cycles.
474 */
475 if (!QUERY_FLAG (op, FLAG_SCARED))
476 {
477 rv_vector rv1;
478
479 /* now we test every part of an object .... this is a real ugly piece of code */
480 for (part = op; part != NULL; part = part->more)
481 {
482 get_rangevector (part, enemy, &rv1, 0x1);
483 dir = rv1.direction;
484
485 /* hm, not sure about this part - in original was a scared flag here too
486 * but that we test above... so can be old code here
487 */
488 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
489 dir = absdir (dir + 4);
490 if (QUERY_FLAG (op, FLAG_CONFUSED))
491 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2);
492
493 if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(RANDOM () % 3))
494 {
495 if (monster_cast_spell (op, part, enemy, dir, &rv1))
496 return 0;
497 }
498
499 if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(RANDOM () % 3))
500 {
501 if (monster_use_scroll (op, part, enemy, dir, &rv1))
502 return 0;
503 }
504
505 if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(RANDOM () % 3))
506 {
507 if (monster_use_range (op, part, enemy, dir))
508 return 0;
509 }
510 if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(RANDOM () % 3))
511 {
512 if (monster_use_skill (op, rv.part, enemy, rv.direction))
513 return 0;
514 }
515 if (QUERY_FLAG (op, FLAG_READY_BOW) && !(RANDOM () % 2))
516 {
517 if (monster_use_bow (op, part, enemy, dir))
518 return 0;
519 }
520 } /* for processing of all parts */
521 } /* If not scared */
522
523
524 part = rv.part;
525 dir = rv.direction;
526
527 if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
528 dir = absdir (dir + 4);
529
530 if (QUERY_FLAG (op, FLAG_CONFUSED))
531 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2);
532
533 pre_att_dir = dir; /* remember the original direction */
534
535 if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
536 {
537 switch (op->attack_movement & LO4)
538 {
539 case DISTATT: 435 case TRIGGER:
540 dir = dist_att (dir, op, enemy, part, &rv); 436 if (monster->will_apply & 1)
437 manual_apply (monster, tmp, 0);
541 break; 438 break;
542 439
543 case RUNATT: 440 case TREASURE:
544 dir = run_att (dir, op, enemy, part, &rv); 441 if (monster->will_apply & 2)
442 manual_apply (monster, tmp, 0);
545 break; 443 break;
546 444
547 case HITRUN:
548 dir = hitrun_att (dir, op, enemy);
549 break;
550
551 case WAITATT:
552 dir = wait_att (dir, op, enemy, part, &rv);
553 break;
554
555 case RUSH: /* default - monster normally moves towards player */
556 case ALLRUN:
557 break;
558
559 case DISTHIT:
560 dir = disthit_att (dir, op, enemy, part, &rv);
561 break;
562
563 case WAIT2:
564 dir = wait_att2 (dir, op, enemy, part, &rv);
565 break;
566
567 default:
568 LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
569 }
570 }
571
572 if (!dir)
573 return 0;
574
575 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
576 {
577 if (move_object (op, dir)) /* Can the monster move directly toward player? */
578 { 445 }
579 /* elmex: Turn our monster after it moved if it has DISTATT attack */ 446 if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
580 if ((op->attack_movement & LO4) == DISTATT) 447 break;
581 op->direction = pre_att_dir;
582
583 return 0;
584 }
585
586 if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
587 {
588
589 /* Try move around corners if !close */
590 int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || RANDOM () & 1) ? 1 : 2;
591
592 for (diff = 1; diff <= maxdiff; diff++)
593 {
594 /* try different detours */
595 int m = 1 - (RANDOM () & 2); /* Try left or right first? */
596
597 if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
598 return 0;
599 }
600 }
601 } /* if monster is not standing still */
602
603 /* elmex: Turn our monster after it moved if it has DISTATT attack */
604 if ((op->attack_movement & LO4) == DISTATT)
605 op->direction = pre_att_dir;
606
607 /*
608 * Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
609 * direction if they can't move away.
610 */
611 if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
612 if (move_randomly (op))
613 return 0;
614
615 /*
616 * Try giving the monster a new enemy - the player that is closest
617 * to it. In this way, it won't just keep trying to get to a target
618 * that is inaccessible.
619 * This could be more clever - it should go through a list of several
620 * enemies, as it is now, you could perhaps get situations where there
621 * are two players flanking the monster at close distance, but which
622 * the monster can't get to, and a third one at a far distance that
623 * the monster could get to - as it is, the monster won't look at that
624 * third one.
625 */
626 if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
627 { 448 }
628 object *nearest_player = get_nearest_player (op);
629
630 if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
631 {
632 op->enemy = NULL;
633 enemy = nearest_player;
634 }
635 }
636
637 if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
638 {
639 /* The adjustement to wc that was here before looked totally bogus -
640 * since wc can in fact get negative, that would mean by adding
641 * the current wc, the creature gets better? Instead, just
642 * add a fixed amount - nasty creatures that are runny away should
643 * still be pretty nasty.
644 */
645 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
646 {
647 part->stats.wc += 10;
648 (void) skill_attack (enemy, part, 0, NULL, NULL);
649 part->stats.wc -= 10;
650 }
651 else
652 (void) skill_attack (enemy, part, 0, NULL, NULL);
653 } /* if monster is in attack range */
654
655 if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
656 return 1;
657
658 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
659 {
660 op->remove ();
661 op->destroy ();
662 return 1;
663 }
664 return 0;
665}
666
667int
668can_hit (object *ob1, object *ob2, rv_vector * rv)
669{
670 object *more;
671 rv_vector rv1;
672
673 if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(RANDOM () % 3))
674 return 0;
675
676 if (abs (rv->distance_x) < 2 && abs (rv->distance_y) < 2)
677 return 1;
678
679 /* check all the parts of ob2 - just because we can't get to
680 * its head doesn't mean we don't want to pound its feet
681 */
682 for (more = ob2->more; more != NULL; more = more->more)
683 {
684 get_rangevector (ob1, more, &rv1, 0);
685 if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
686 return 1;
687 }
688 return 0;
689
690} 449}
691 450
692/* Returns 1 is monster should cast spell sp at an enemy 451/* Returns 1 is monster should cast spell sp at an enemy
693 * Returns 0 if the monster should not cast this spell. 452 * Returns 0 if the monster should not cast this spell.
694 * 453 *
… …
702 * 461 *
703 * 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,
704 * 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,
705 * the right type of healing spell could be useful. 464 * the right type of healing spell could be useful.
706 */ 465 */
707
708static int 466static int
709monster_should_cast_spell (object *monster, object *spell_ob) 467monster_should_cast_spell (object *monster, object *spell_ob)
710{ 468{
711 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET || 469 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||
712 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE || 470 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||
713 spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE || 471 spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE ||
714 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 ||
715 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 ||
716 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)
717
718 return 1; 475 return 1;
719 476
720 return 0; 477 return 0;
721} 478}
722 479
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}
723 870
724#define MAX_KNOWN_SPELLS 20 871#define MAX_KNOWN_SPELLS 20
725 872
726/* Returns a randomly selected spell. This logic is still 873/* Returns a randomly selected spell. This logic is still
727 * less than ideal. This code also only seems to deal with 874 * less than ideal. This code also only seems to deal with
… …
730 */ 877 */
731object * 878object *
732monster_choose_random_spell (object *monster) 879monster_choose_random_spell (object *monster)
733{ 880{
734 object *altern[MAX_KNOWN_SPELLS]; 881 object *altern[MAX_KNOWN_SPELLS];
735 object *tmp;
736 int i = 0; 882 int i = 0;
737 883
738 for (tmp = monster->inv; tmp != NULL; tmp = tmp->below) 884 for (object *tmp = monster->inv; tmp; tmp = tmp->below)
739 if (tmp->type == SPELLBOOK || tmp->type == SPELL) 885 if (tmp->type == SPELLBOOK || tmp->type == SPELL)
740 { 886 {
741 /* Check and see if it's actually a useful spell. 887 /* Check and see if it's actually a useful spell.
742 * If its a spellbook, the spell is actually the inventory item. 888 * If its a spellbook, the spell is actually the inventory item.
743 * 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.
744 */ 890 */
745 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))
746 { 892 {
747 altern[i++] = tmp; 893 altern [i++] = tmp;
894
748 if (i == MAX_KNOWN_SPELLS) 895 if (i == MAX_KNOWN_SPELLS)
749 break; 896 break;
750 } 897 }
751 } 898 }
752 if (!i) 899
753 return NULL; 900 return i ? altern [rndm (i)] : 0;
754 return altern[RANDOM () % i];
755} 901}
756 902
757/* 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.
758 * 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.
759 * head is the head of the monster. 905 * head is the head of the monster.
760 * part is the part of the monster we are checking against. 906 * part is the part of the monster we are checking against.
761 * pl is the target. 907 * pl is the target.
762 * dir is the direction to case. 908 * dir is the direction to case.
763 * rv is the vector which describes where the enemy is. 909 * rv is the vector which describes where the enemy is.
764 */ 910 */
765
766int 911int
767monster_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)
768{ 913{
769 object *spell_item; 914 object *spell_item;
770 object *owner; 915 object *owner;
… …
781 926
782 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL) 927 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
783 { 928 {
784 get_rangevector (head, owner, &rv1, 0x1); 929 get_rangevector (head, owner, &rv1, 0x1);
785 if (dirdiff (dir, rv1.direction) < 2) 930 if (dirdiff (dir, rv1.direction) < 2)
786 {
787 return 0; /* Might hit owner with spell */ 931 return 0; /* Might hit owner with spell */
788 }
789 } 932 }
790 933
791 if (QUERY_FLAG (head, FLAG_CONFUSED)) 934 if (QUERY_FLAG (head, FLAG_CONFUSED))
792 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 935 dir = absdir (dir + rndm (3) + rndm (3) - 2);
793 936
794 /* If the monster hasn't already chosen a spell, choose one 937 /* If the monster hasn't already chosen a spell, choose one
795 * 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
796 * could be different by the time the monster goes again). 939 * could be different by the time the monster goes again).
797 */ 940 */
… …
801 { 944 {
802 LOG (llevMonster, "Turned off spells in %s\n", &head->name); 945 LOG (llevMonster, "Turned off spells in %s\n", &head->name);
803 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 */
804 return 0; 947 return 0;
805 } 948 }
949
806 if (spell_item->type == SPELLBOOK) 950 if (spell_item->type == SPELLBOOK)
807 { 951 {
808 if (!spell_item->inv) 952 if (!spell_item->inv)
809 { 953 {
810 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);
811 return 0; 955 return 0;
812 } 956 }
957
813 spell_item = spell_item->inv; 958 spell_item = spell_item->inv;
814 } 959 }
815 } 960 }
816 else 961 else
817 spell_item = head->spellitem; 962 spell_item = head->spellitem;
… …
836 /* set this to null, so next time monster will choose something different */ 981 /* set this to null, so next time monster will choose something different */
837 head->spellitem = NULL; 982 head->spellitem = NULL;
838 983
839 return cast_spell (part, part, dir, spell_item, NULL); 984 return cast_spell (part, part, dir, spell_item, NULL);
840} 985}
841
842 986
843int 987int
844monster_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)
845{ 989{
846 object *scroll; 990 object *scroll;
… …
864 return 0; /* Might hit owner with spell */ 1008 return 0; /* Might hit owner with spell */
865 } 1009 }
866 } 1010 }
867 1011
868 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1012 if (QUERY_FLAG (head, FLAG_CONFUSED))
869 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1013 dir = absdir (dir + rndm (3) + rndm (3) - 2);
870 1014
871 for (scroll = head->inv; scroll; scroll = scroll->below) 1015 for (scroll = head->inv; scroll; scroll = scroll->below)
872 if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv)) 1016 if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv))
873 break; 1017 break;
874 1018
… …
896 * 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.
897 * 1041 *
898 * At the moment this is only useful for throwing, perhaps for 1042 * At the moment this is only useful for throwing, perhaps for
899 * 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
900 */ 1044 */
901
902int 1045int
903monster_use_skill (object *head, object *part, object *pl, int dir) 1046monster_use_skill (object *head, object *part, object *pl, int dir)
904{ 1047{
905 object *skill, *owner; 1048 object *skill, *owner;
906 1049
… …
912 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);
913 1056
914 if (dirdiff (dir, dir2) < 1) 1057 if (dirdiff (dir, dir2) < 1)
915 return 0; /* Might hit owner with skill -thrown rocks for example ? */ 1058 return 0; /* Might hit owner with skill -thrown rocks for example ? */
916 } 1059 }
1060
917 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1061 if (QUERY_FLAG (head, FLAG_CONFUSED))
918 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1062 dir = absdir (dir + rndm (3) + rndm (3) - 2);
919 1063
920 /* skill selection - monster will use the next unused skill. 1064 /* skill selection - monster will use the next unused skill.
921 * well...the following scenario will allow the monster to 1065 * well...the following scenario will allow the monster to
922 * 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
923 * more skills available to monsters. 1067 * more skills available to monsters.
924 */ 1068 */
925
926 for (skill = head->inv; skill != NULL; skill = skill->below) 1069 for (skill = head->inv; skill; skill = skill->below)
927 if (skill->type == SKILL && skill != head->chosen_skill) 1070 if (skill->type == SKILL && skill != head->chosen_skill)
928 { 1071 {
929 head->chosen_skill = skill; 1072 head->chosen_skill = skill;
930 break; 1073 break;
931 } 1074 }
… …
934 { 1077 {
935 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);
936 CLEAR_FLAG (head, FLAG_READY_SKILL); 1079 CLEAR_FLAG (head, FLAG_READY_SKILL);
937 return 0; 1080 return 0;
938 } 1081 }
1082
939 /* use skill */ 1083 /* use skill */
940 return do_skill (head, part, head->chosen_skill, dir, NULL); 1084 return do_skill (head, part, head->chosen_skill, dir, NULL);
941} 1085}
942 1086
943/* Monster will use a ranged spell attack. */ 1087/* Monster will use a ranged spell attack. */
944
945int 1088int
946monster_use_range (object *head, object *part, object *pl, int dir) 1089monster_use_range (object *head, object *part, object *pl, int dir)
947{ 1090{
948 object *wand, *owner; 1091 object *wand, *owner;
949 int at_least_one = 0; 1092 int at_least_one = 0;
… …
956 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);
957 1100
958 if (dirdiff (dir, dir2) < 2) 1101 if (dirdiff (dir, dir2) < 2)
959 return 0; /* Might hit owner with spell */ 1102 return 0; /* Might hit owner with spell */
960 } 1103 }
1104
961 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1105 if (QUERY_FLAG (head, FLAG_CONFUSED))
962 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1106 dir = absdir (dir + rndm (3) + rndm (3) - 2);
963 1107
964 for (wand = head->inv; wand != NULL; wand = wand->below) 1108 for (wand = head->inv; wand; wand = wand->below)
965 { 1109 {
966 if (wand->type == WAND) 1110 if (wand->type == WAND)
967 { 1111 {
968 /* Found a wand, let's see if it has charges left */ 1112 /* Found a wand, let's see if it has charges left */
969 at_least_one = 1; 1113 at_least_one = 1;
… …
975 if (!(--wand->stats.food)) 1119 if (!(--wand->stats.food))
976 { 1120 {
977 if (wand->arch) 1121 if (wand->arch)
978 { 1122 {
979 CLEAR_FLAG (wand, FLAG_ANIMATE); 1123 CLEAR_FLAG (wand, FLAG_ANIMATE);
980 wand->face = wand->arch->clone.face; 1124 wand->face = wand->arch->face;
981 wand->set_speed (0); 1125 wand->set_speed (0);
982 } 1126 }
983 } 1127 }
984 /* Success */ 1128 /* Success */
985 return 1; 1129 return 1;
… …
1004 } 1148 }
1005 1149
1006 if (at_least_one) 1150 if (at_least_one)
1007 return 0; 1151 return 0;
1008 1152
1009 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);
1010 CLEAR_FLAG (head, FLAG_READY_RANGE); 1154 CLEAR_FLAG (head, FLAG_READY_RANGE);
1011 return 0; 1155 return 0;
1012} 1156}
1013 1157
1014int 1158int
… …
1016{ 1160{
1017 object *owner; 1161 object *owner;
1018 1162
1019 if (!(dir = path_to_player (part, pl, 0))) 1163 if (!(dir = path_to_player (part, pl, 0)))
1020 return 0; 1164 return 0;
1165
1021 if (QUERY_FLAG (head, FLAG_CONFUSED)) 1166 if (QUERY_FLAG (head, FLAG_CONFUSED))
1022 dir = absdir (dir + RANDOM () % 3 + RANDOM () % 3 - 2); 1167 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1023 1168
1024 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL) 1169 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
1025 { 1170 {
1026 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);
1027 1172
… …
1032 /* in server/player.c */ 1177 /* in server/player.c */
1033 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);
1034 1179
1035} 1180}
1036 1181
1037/* Checks if putting on 'item' will make 'who' do more
1038 * damage. This is a very simplistic check - also checking things
1039 * like speed and ac are also relevant.
1040 *
1041 * return true if item is a better object.
1042 */
1043
1044int
1045check_good_weapon (object *who, object *item)
1046{
1047 object *other_weap;
1048 int val = 0, i;
1049
1050 for (other_weap = who->inv; other_weap != NULL; other_weap = other_weap->below)
1051 if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED))
1052 break;
1053
1054 if (other_weap == NULL) /* No other weapons */
1055 return 1;
1056
1057 /* Rather than go through and apply the new one, and see if it is
1058 * better, just do some simple checks
1059 * Put some multipliers for things that hvae several effects,
1060 * eg, magic affects both damage and wc, so it has more weight
1061 */
1062
1063 val = item->stats.dam - other_weap->stats.dam;
1064 val += (item->magic - other_weap->magic) * 3;
1065 /* Monsters don't really get benefits from things like regen rates
1066 * from items. But the bonus for their stats are very important.
1067 */
1068 for (i = 0; i < NUM_STATS; i++)
1069 val += (get_attr_value (&item->stats, i) - get_attr_value (&other_weap->stats, i)) * 2;
1070
1071 if (val > 0)
1072 return 1;
1073 else
1074 return 0;
1075
1076}
1077
1078int
1079check_good_armour (object *who, object *item)
1080{
1081 object *other_armour;
1082 int val = 0, i;
1083
1084 for (other_armour = who->inv; other_armour != NULL; other_armour = other_armour->below)
1085 if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED))
1086 break;
1087
1088 if (other_armour == NULL) /* No other armour, use the new */
1089 return 1;
1090
1091 /* Like above function , see which is better */
1092 val = item->stats.ac - other_armour->stats.ac;
1093 val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL]) / 5;
1094 val += (item->magic - other_armour->magic) * 3;
1095
1096 /* for the other protections, do weigh them very much in the equation -
1097 * it is the armor protection which is most important, because there is
1098 * no good way to know what the player may attack the monster with.
1099 * So if the new item has better protection than the old, give that higher
1100 * value. If the reverse, then decrease the value of this item some.
1101 */
1102 for (i = 1; i < NROFATTACKS; i++)
1103 {
1104 if (item->resist[i] > other_armour->resist[i])
1105 val++;
1106 else if (item->resist[i] < other_armour->resist[i])
1107 val--;
1108 }
1109
1110 /* Very few armours have stats, so not much need to worry about those. */
1111
1112 if (val > 0)
1113 return 1;
1114 else
1115 return 0;
1116
1117}
1118
1119/*
1120 * monster_check_pickup(): checks for items that monster can pick up.
1121 *
1122 * Vick's (vick@bern.docs.uu.se) fix 921030 for the sweeper blob.
1123 * Each time the blob passes over some treasure, it will
1124 * grab it a.s.a.p.
1125 *
1126 * Eneq(@csd.uu.se): This can now be defined in the archetypes, added code
1127 * to handle this.
1128 *
1129 * This function was seen be continueing looping at one point (tmp->below
1130 * became a recursive loop. It may be better to call monster_check_apply
1131 * after we pick everything up, since that function may call others which
1132 * affect stacking on this space.
1133 */
1134
1135void
1136monster_check_pickup (object *monster)
1137{
1138 object *tmp, *next;
1139
1140 for (tmp = monster->below; tmp != NULL; tmp = next)
1141 {
1142 next = tmp->below;
1143 if (monster_can_pick (monster, tmp))
1144 {
1145 tmp->remove ();
1146 tmp = insert_ob_in_ob (tmp, monster);
1147 (void) monster_check_apply (monster, tmp);
1148 }
1149 /* We could try to re-establish the cycling, of the space, but probably
1150 * not a big deal to just bail out.
1151 */
1152 if (next && next->destroyed ())
1153 return;
1154 }
1155}
1156
1157/*
1158 * monster_can_pick(): If the monster is interested in picking up
1159 * the item, then return 0. Otherwise 0.
1160 * Instead of pick_up, flags for "greed", etc, should be used.
1161 * I've already utilized flags for bows, wands, rings, etc, etc. -Frank.
1162 */
1163
1164int
1165monster_can_pick (object *monster, object *item)
1166{
1167 int flag = 0;
1168 int i;
1169
1170 if (!can_pick (monster, item))
1171 return 0;
1172
1173 if (QUERY_FLAG (item, FLAG_UNPAID))
1174 return 0;
1175
1176 if (monster->pick_up & 64) /* All */
1177 flag = 1;
1178
1179 else
1180 switch (item->type)
1181 {
1182 case MONEY:
1183 case GEM:
1184 flag = monster->pick_up & 2;
1185 break;
1186
1187 case FOOD:
1188 flag = monster->pick_up & 4;
1189 break;
1190
1191 case WEAPON:
1192 flag = (monster->pick_up & 8) || QUERY_FLAG (monster, FLAG_USE_WEAPON);
1193 break;
1194
1195 case ARMOUR:
1196 case SHIELD:
1197 case HELMET:
1198 case BOOTS:
1199 case GLOVES:
1200 case GIRDLE:
1201 flag = (monster->pick_up & 16) || QUERY_FLAG (monster, FLAG_USE_ARMOUR);
1202 break;
1203
1204 case SKILL:
1205 flag = QUERY_FLAG (monster, FLAG_CAN_USE_SKILL);
1206 break;
1207
1208 case RING:
1209 flag = QUERY_FLAG (monster, FLAG_USE_RING);
1210 break;
1211
1212 case WAND:
1213 case HORN:
1214 case ROD:
1215 flag = QUERY_FLAG (monster, FLAG_USE_RANGE);
1216 break;
1217
1218 case SPELLBOOK:
1219 flag = (monster->arch != NULL && QUERY_FLAG ((&monster->arch->clone), FLAG_CAST_SPELL));
1220 break;
1221
1222 case SCROLL:
1223 flag = QUERY_FLAG (monster, FLAG_USE_SCROLL);
1224 break;
1225
1226 case BOW:
1227 case ARROW:
1228 flag = QUERY_FLAG (monster, FLAG_USE_BOW);
1229 break;
1230 }
1231 /* Simplistic check - if the monster has a location to equip it, he will
1232 * pick it up. Note that this doesn't handle cases where an item may
1233 * use several locations.
1234 */
1235 for (i = 0; i < NUM_BODY_LOCATIONS; i++)
1236 {
1237 if (monster->body_info[i] && item->body_info[i])
1238 {
1239 flag = 1;
1240 break;
1241 }
1242 }
1243
1244 if (((!(monster->pick_up & 32)) && flag) || ((monster->pick_up & 32) && (!flag)))
1245 return 1;
1246 return 0;
1247}
1248
1249/*
1250 * monster_apply_below():
1251 * Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's
1252 * eager to apply things, encounters something apply-able,
1253 * then make him apply it
1254 */
1255
1256void
1257monster_apply_below (object *monster)
1258{
1259 object *tmp, *next;
1260
1261 for (tmp = monster->below; tmp != NULL; tmp = next)
1262 {
1263 next = tmp->below;
1264 switch (tmp->type)
1265 {
1266 case CF_HANDLE:
1267 case TRIGGER:
1268 if (monster->will_apply & 1)
1269 manual_apply (monster, tmp, 0);
1270 break;
1271
1272 case TREASURE:
1273 if (monster->will_apply & 2)
1274 manual_apply (monster, tmp, 0);
1275 break;
1276
1277 }
1278 if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1279 break;
1280 }
1281}
1282
1283/*
1284 * monster_check_apply() is meant to be called after an item is
1285 * inserted in a monster.
1286 * If an item becomes outdated (monster found a better item),
1287 * a pointer to that object is returned, so it can be dropped.
1288 * (so that other monsters can pick it up and use it)
1289 * Note that as things are now, monsters never drop something -
1290 * they can pick up all that they can use.
1291 */
1292
1293/* Sept 96, fixed this so skills will be readied -b.t.*/
1294
1295void
1296monster_check_apply (object *mon, object *item)
1297{
1298
1299 int flag = 0;
1300
1301 if (item->type == SPELLBOOK && mon->arch != NULL && (QUERY_FLAG ((&mon->arch->clone), FLAG_CAST_SPELL)))
1302 {
1303 SET_FLAG (mon, FLAG_CAST_SPELL);
1304 return;
1305 }
1306
1307 /* If for some reason, this item is already applied, no more work to do */
1308 if (QUERY_FLAG (item, FLAG_APPLIED))
1309 return;
1310
1311 /* Might be better not to do this - if the monster can fire a bow,
1312 * it is possible in his wanderings, he will find one to use. In
1313 * which case, it would be nice to have ammo for it.
1314 */
1315 if (QUERY_FLAG (mon, FLAG_USE_BOW) && item->type == ARROW)
1316 {
1317 /* Check for the right kind of bow */
1318 object *bow;
1319
1320 for (bow = mon->inv; bow != NULL; bow = bow->below)
1321 if (bow->type == BOW && bow->race == item->race)
1322 {
1323 SET_FLAG (mon, FLAG_READY_BOW);
1324 LOG (llevMonster, "Found correct bow for arrows.\n");
1325 return; /* nothing more to do for arrows */
1326 }
1327 }
1328
1329 if (item->type == TREASURE && mon->will_apply & WILL_APPLY_TREASURE)
1330 flag = 1;
1331 /* Eating food gets hp back */
1332 else if (item->type == FOOD && mon->will_apply & WILL_APPLY_FOOD)
1333 flag = 1;
1334 else if (item->type == SCROLL && QUERY_FLAG (mon, FLAG_USE_SCROLL))
1335 {
1336 if (!item->inv)
1337 LOG (llevDebug, "Monster %d having scroll %d with empty inventory!", mon->count, item->count);
1338 else if (monster_should_cast_spell (mon, item->inv))
1339 SET_FLAG (mon, FLAG_READY_SCROLL);
1340 /* Don't use it right now */
1341 return;
1342 }
1343 else if (item->type == WEAPON)
1344 flag = check_good_weapon (mon, item);
1345 else if (item->is_armor ())
1346 flag = check_good_armour (mon, item);
1347 /* Should do something more, like make sure this is a better item */
1348 else if (item->type == RING)
1349 flag = 1;
1350 else if (item->type == WAND || item->type == ROD || item->type == HORN)
1351 {
1352 /* We never really 'ready' the wand/rod/horn, because that would mean the
1353 * weapon would get undone.
1354 */
1355 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
1356 {
1357 SET_FLAG (mon, FLAG_READY_RANGE);
1358 SET_FLAG (item, FLAG_APPLIED);
1359 }
1360 return;
1361 }
1362 else if (item->type == BOW)
1363 {
1364 /* We never really 'ready' the bow, because that would mean the
1365 * weapon would get undone.
1366 */
1367 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
1368 SET_FLAG (mon, FLAG_READY_BOW);
1369 return;
1370 }
1371 else if (item->type == SKILL)
1372 {
1373 /*
1374 * skills are specials: monsters must have the 'FLAG_READY_SKILL' flag set,
1375 * else they can't use the skill...
1376 * Skills also don't need to get applied, so return now.
1377 */
1378 SET_FLAG (mon, FLAG_READY_SKILL);
1379 return;
1380 }
1381
1382
1383 /* if we don't match one of the above types, return now.
1384 * can_apply_object will say that we can apply things like flesh,
1385 * bolts, and whatever else, because it only checks against the
1386 * body_info locations.
1387 */
1388 if (!flag)
1389 return;
1390
1391 /* Check to see if the monster can use this item. If not, no need
1392 * to do further processing. Note that can_apply_object already checks
1393 * for the CAN_USE flags.
1394 */
1395 if (can_apply_object (mon, item) & CAN_APPLY_NOT_MASK)
1396 return;
1397
1398 /* should only be applying this item, not unapplying it.
1399 * also, ignore status of curse so they can take off old armour.
1400 * monsters have some advantages after all.
1401 */
1402 manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE);
1403
1404 return;
1405}
1406
1407void 1182void
1408npc_call_help (object *op) 1183npc_call_help (object *op)
1409{ 1184{
1410 int x, y, mflags; 1185 unordered_mapwalk (op, -7, -7, 7, 7)
1411 object *npc;
1412 sint16 sx, sy;
1413 maptile *m;
1414
1415 for (x = -3; x < 4; x++)
1416 for (y = -3; y < 4; y++)
1417 { 1186 {
1418 m = op->map; 1187 mapspace &ms = m->at (nx, ny);
1419 sx = op->x + x; 1188
1420 sy = op->y + y;
1421 mflags = get_map_flags (m, &m, sx, sy, &sx, &sy);
1422 /* If nothing alive on this space, no need to search the space. */ 1189 /* If nothing alive on this space, no need to search the space. */
1423 if ((mflags & P_OUT_OF_MAP) || !(mflags & P_IS_ALIVE)) 1190 if (!(ms.flags () & P_IS_ALIVE))
1424 continue; 1191 continue;
1425 1192
1426 for (npc = GET_MAP_OB (m, sx, sy); npc != NULL; npc = npc->above) 1193 for (object *npc = ms.bot; npc; npc = npc->above)
1427 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE)) 1194 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1428 npc->enemy = op->enemy; 1195 npc->enemy = op->enemy;
1429 } 1196 }
1430}
1431
1432
1433int
1434dist_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1435{
1436
1437 if (can_hit (part, enemy, rv))
1438 return dir;
1439 if (rv->distance < 10)
1440 return absdir (dir + 4);
1441 else if (rv->distance > 18)
1442 return dir;
1443 return 0;
1444}
1445
1446int
1447run_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1448{
1449
1450 if ((can_hit (part, enemy, rv) && ob->move_status < 20) || ob->move_status < 20)
1451 {
1452 ob->move_status++;
1453 return (dir);
1454 }
1455 else if (ob->move_status > 20)
1456 ob->move_status = 0;
1457 return absdir (dir + 4);
1458}
1459
1460int
1461hitrun_att (int dir, object *ob, object *enemy)
1462{
1463 if (ob->move_status++ < 25)
1464 return dir;
1465 else if (ob->move_status < 50)
1466 return absdir (dir + 4);
1467 else
1468 ob->move_status = 0;
1469 return absdir (dir + 4);
1470}
1471
1472int
1473wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1474{
1475
1476 int inrange = can_hit (part, enemy, rv);
1477
1478 if (ob->move_status || inrange)
1479 ob->move_status++;
1480
1481 if (ob->move_status == 0)
1482 return 0;
1483 else if (ob->move_status < 10)
1484 return dir;
1485 else if (ob->move_status < 15)
1486 return absdir (dir + 4);
1487 ob->move_status = 0;
1488 return 0;
1489}
1490
1491int
1492disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1493{
1494
1495 /* The logic below here looked plain wrong before. Basically, what should
1496 * happen is that if the creatures hp percentage falls below run_away,
1497 * the creature should run away (dir+4)
1498 * I think its wrong for a creature to have a zero maxhp value, but
1499 * at least one map has this set, and whatever the map contains, the
1500 * server should try to be resilant enough to avoid the problem
1501 */
1502 if (ob->stats.maxhp && (ob->stats.hp * 100) / ob->stats.maxhp < ob->run_away)
1503 return absdir (dir + 4);
1504 return dist_att (dir, ob, enemy, part, rv);
1505}
1506
1507int
1508wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1509{
1510 if (rv->distance < 9)
1511 return absdir (dir + 4);
1512 return 0;
1513}
1514
1515void
1516circ1_move (object *ob)
1517{
1518 static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 };
1519 if (++ob->move_status > 11)
1520 ob->move_status = 0;
1521 if (!(move_object (ob, circle[ob->move_status])))
1522 (void) move_object (ob, RANDOM () % 8 + 1);
1523}
1524
1525void
1526circ2_move (object *ob)
1527{
1528 static int circle[20] = { 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 1, 1, 1, 2, 2 };
1529 if (++ob->move_status > 19)
1530 ob->move_status = 0;
1531 if (!(move_object (ob, circle[ob->move_status])))
1532 (void) move_object (ob, RANDOM () % 8 + 1);
1533}
1534
1535void
1536pace_movev (object *ob)
1537{
1538 if (ob->move_status++ > 6)
1539 ob->move_status = 0;
1540 if (ob->move_status < 4)
1541 (void) move_object (ob, 5);
1542 else
1543 (void) move_object (ob, 1);
1544}
1545
1546void
1547pace_moveh (object *ob)
1548{
1549 if (ob->move_status++ > 6)
1550 ob->move_status = 0;
1551 if (ob->move_status < 4)
1552 (void) move_object (ob, 3);
1553 else
1554 (void) move_object (ob, 7);
1555}
1556
1557void
1558pace2_movev (object *ob)
1559{
1560 if (ob->move_status++ > 16)
1561 ob->move_status = 0;
1562 if (ob->move_status < 6)
1563 (void) move_object (ob, 5);
1564 else if (ob->move_status < 8)
1565 return;
1566 else if (ob->move_status < 13)
1567 (void) move_object (ob, 1);
1568 else
1569 return;
1570}
1571
1572void
1573pace2_moveh (object *ob)
1574{
1575 if (ob->move_status++ > 16)
1576 ob->move_status = 0;
1577 if (ob->move_status < 6)
1578 (void) move_object (ob, 3);
1579 else if (ob->move_status < 8)
1580 return;
1581 else if (ob->move_status < 13)
1582 (void) move_object (ob, 7);
1583 else
1584 return;
1585}
1586
1587void
1588rand_move (object *ob)
1589{
1590 int i;
1591
1592 if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(RANDOM () % 9))))
1593 for (i = 0; i < 5; i++)
1594 if (move_object (ob, ob->move_status = RANDOM () % 8 + 1))
1595 return;
1596} 1197}
1597 1198
1598void 1199void
1599check_earthwalls (object *op, maptile *m, int x, int y) 1200check_earthwalls (object *op, maptile *m, int x, int y)
1600{ 1201{
1601 object *tmp;
1602
1603 for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above) 1202 for (object *tmp = GET_MAP_OB (m, x, y); tmp; tmp = tmp->above)
1604 {
1605 if (tmp->type == EARTHWALL) 1203 if (tmp->type == EARTHWALL)
1606 { 1204 {
1607 hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1); 1205 hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1);
1608 return; 1206 return;
1609 } 1207 }
1610 }
1611} 1208}
1612 1209
1613void 1210void
1614check_doors (object *op, maptile *m, int x, int y) 1211check_doors (object *op, maptile *m, int x, int y)
1615{ 1212{
1616 object *tmp;
1617
1618 for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above) 1213 for (object *tmp = GET_MAP_OB (m, x, y); tmp; tmp = tmp->above)
1619 {
1620 if (tmp->type == DOOR) 1214 if (tmp->type == DOOR)
1621 { 1215 {
1622 hit_player (tmp, 1000, op, AT_PHYSICAL, 1); 1216 hit_player (tmp, 1000, op, AT_PHYSICAL, 1);
1623 return; 1217 return;
1624 } 1218 }
1625 }
1626} 1219}
1627 1220
1628/* find_mon_throw_ob() - modeled on find_throw_ob 1221/* find_mon_throw_ob() - modeled on find_throw_ob
1629 * This is probably overly simplistic as it is now - We want 1222 * This is probably overly simplistic as it is now - We want
1630 * monsters to throw things like chairs and other pieces of 1223 * monsters to throw things like chairs and other pieces of
1631 * furniture, even if they are not good throwable objects. 1224 * furniture, even if they are not good throwable objects.
1632 * Probably better to have the monster throw a throwable object 1225 * Probably better to have the monster throw a throwable object
1633 * first, then throw any non equipped weapon. 1226 * first, then throw any non equipped weapon.
1634 */ 1227 */
1635
1636object * 1228object *
1637find_mon_throw_ob (object *op) 1229find_mon_throw_ob (object *op)
1638{ 1230{
1639 object *tmp = NULL; 1231 object *tmp = NULL;
1640 1232
… …
1644 tmp = op; 1236 tmp = op;
1645 1237
1646 /* 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
1647 * marked item and throw it to the enemy. 1239 * marked item and throw it to the enemy.
1648 */ 1240 */
1649
1650 for (tmp = op->inv; tmp; tmp = tmp->below) 1241 for (tmp = op->inv; tmp; tmp = tmp->below)
1651 { 1242 {
1652
1653 /* Can't throw invisible objects or items that are applied */ 1243 /* Can't throw invisible objects or items that are applied */
1654 if (tmp->invisible || QUERY_FLAG (tmp, FLAG_APPLIED)) 1244 if (tmp->invisible || QUERY_FLAG (tmp, FLAG_APPLIED))
1655 continue; 1245 continue;
1656 1246
1657 if (QUERY_FLAG (tmp, FLAG_IS_THROWN)) 1247 if (QUERY_FLAG (tmp, FLAG_IS_THROWN))
… …
1662#ifdef DEBUG_THROW 1252#ifdef DEBUG_THROW
1663 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);
1664#endif 1254#endif
1665 1255
1666 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) / FABS (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) / fabsf (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;
1667} 1671}
1668 1672
1669/* 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
1670 * 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
1671 * 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.
… …
1673 * 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
1674 * 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
1675 * be within the valid range. MSW 2001-08-05 1679 * be within the valid range. MSW 2001-08-05
1676 * 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
1677 */ 1681 */
1678
1679int 1682int
1680can_detect_enemy (object *op, object *enemy, rv_vector * rv) 1683can_detect_enemy (object *op, object *enemy, rv_vector * rv)
1681{ 1684{
1682 int radius = MIN_MON_RADIUS, hide_discovery;
1683
1684 /* null detection for any of these condtions always */ 1685 /* null detection for any of these condtions always */
1685 if (!op || !enemy || !op->map || !enemy->map) 1686 if (!op || !enemy || !op->map || !enemy->map)
1686 return 0; 1687 return 0;
1687 1688
1688 /* 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 */
… …
1690 return 0; 1691 return 0;
1691 1692
1692 get_rangevector (op, enemy, rv, 0); 1693 get_rangevector (op, enemy, rv, 0);
1693 1694
1694 /* Monsters always ignore the DM */ 1695 /* Monsters always ignore the DM */
1695 if ((op->type != PLAYER) && QUERY_FLAG (enemy, FLAG_WIZ)) 1696 if (!op->is_player () && QUERY_FLAG (enemy, FLAG_WIZ))
1696 return 0; 1697 return 0;
1697 1698
1698 /* simple check. Should probably put some range checks in here. */ 1699 /* simple check. Should probably put some range checks in here. */
1699 if (can_see_enemy (op, enemy)) 1700 if (can_see_enemy (op, enemy))
1700 return 1; 1701 return 1;
1701 1702
1702 /* 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
1703 * finding enemies! 1704 * finding enemies!
1704 */ 1705 */
1705 if (op->type == PLAYER) 1706 if (op->is_player ())
1706 return 0; 1707 return 0;
1707 1708
1708 /* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE 1709 /* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE
1709 * 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
1710 */ 1711 */
1711 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)))
1712 return 0; 1713 return 0;
1713 1714
1715 int radius = MIN_MON_RADIUS;
1716
1714 /* use this for invis also */ 1717 /* use this for invis also */
1715 hide_discovery = op->stats.Int / 5; 1718 int hide_discovery = op->stats.Int / 5;
1716 1719
1717 /* Determine Detection radii */ 1720 /* Determine Detection radii */
1718 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) */
1719 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);
1720 else 1723 else
1721 { /* a level/INT/Dex adjustment for hiding */ 1724 { /* a level/INT/Dex adjustment for hiding */
1722 object *sk_hide;
1723 int bonus = (op->level / 2) + (op->stats.Int / 5); 1725 int bonus = op->level / 2 + op->stats.Int / 5;
1724 1726
1725 if (enemy->type == PLAYER) 1727 if (enemy->is_player ())
1726 { 1728 {
1727 if ((sk_hide = find_skill_by_number (enemy, SK_HIDING))) 1729 if (object *sk_hide = find_skill_by_number (enemy, SK_HIDING))
1728 bonus -= sk_hide->level; 1730 bonus -= sk_hide->level;
1729 else 1731 else
1730 { 1732 {
1731 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");
1732 make_visible (enemy); 1734 make_visible (enemy);
… …
1741 } /* else creature has modifiers for hiding */ 1743 } /* else creature has modifiers for hiding */
1742 1744
1743 /* Radii stealth adjustment. Only if you are stealthy 1745 /* Radii stealth adjustment. Only if you are stealthy
1744 * will you be able to sneak up closer to creatures */ 1746 * will you be able to sneak up closer to creatures */
1745 if (QUERY_FLAG (enemy, FLAG_STEALTH)) 1747 if (QUERY_FLAG (enemy, FLAG_STEALTH))
1746 radius = radius / 2, hide_discovery = hide_discovery / 3; 1748 {
1749 radius /= 2;
1750 hide_discovery /= 3;
1751 }
1747 1752
1748 /* Radii adjustment for enemy standing in the dark */ 1753 /* Radii adjustment for enemy standing in the dark */
1749 if (op->map->darkness > 0 && !stand_in_light (enemy)) 1754 if (!stand_in_light (enemy))
1750 { 1755 {
1751 /* on dark maps body heat can help indicate location with infravision 1756 /* on dark maps body heat can help indicate location with infravision
1752 * undead don't have body heat, so no benefit detecting them. 1757 * undead don't have body heat, so no benefit detecting them.
1753 */ 1758 */
1754 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))
1755 radius += op->map->darkness / 2; 1760 radius += op->map->darklevel () / 2;
1756 else 1761 else
1757 radius -= op->map->darkness / 2; 1762 radius -= op->map->darklevel () / 2;
1758 1763
1759 /* op next to a monster (and not in complete darkness) 1764 /* op next to a monster (and not in complete darkness)
1760 * the monster should have a chance to see you. 1765 * the monster should have a chance to see you.
1761 */ 1766 */
1762 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)
1763 radius = MIN_MON_RADIUS; 1768 radius = MIN_MON_RADIUS;
1764 } /* if on dark map */ 1769 } /* if on dark map */
1765 1770
1766 /* Lets not worry about monsters that have incredible detection 1771 /* Lets not worry about monsters that have incredible detection
1767 * 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
… …
1769 * 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
1770 * do something. Note that the distance field in the 1775 * do something. Note that the distance field in the
1771 * 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
1772 * find that. 1777 * find that.
1773 */ 1778 */
1774 if (radius > 13) 1779 // note that the above reasoning was utter bullshit even at the time it was written
1775 radius = 13; 1780 // we use 25, lets see if we have the cpu time for it
1781 radius = min (25, radius);
1776 1782
1777 /* Enemy in range! Now test for detection */ 1783 /* Enemy in range! Now test for detection */
1778 if ((int) rv->distance <= radius) 1784 if (rv->distance <= radius)
1779 { 1785 {
1780 /* ah, we are within range, detected? take cases */ 1786 /* ah, we are within range, detected? take cases */
1781 if (!enemy->invisible) /* enemy in dark squares... are seen! */ 1787 if (!enemy->invisible) /* enemy in dark squares... are seen! */
1782 return 1; 1788 return 1;
1783 1789
1784 /* hidden or low-quality invisible */ 1790 /* hidden or low-quality invisible */
1785 if (enemy->hide && (rv->distance <= 1) && (RANDOM () % 100 <= hide_discovery)) 1791 if (enemy->flag [FLAG_HIDDEN] && rv->distance <= 1 && rndm (100) <= hide_discovery)
1786 { 1792 {
1787 make_visible (enemy); 1793 make_visible (enemy);
1794
1788 /* inform players of new status */ 1795 /* inform players of new status */
1789 if (enemy->type == PLAYER && player_can_view (enemy, op)) 1796 if (enemy->type == PLAYER && player_can_view (enemy, op))
1790 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
1791 return 1; /* detected enemy */ 1799 return 1; /* detected enemy */
1792 } 1800 }
1793 else if (enemy->invisible) 1801 else if (enemy->invisible)
1794 { 1802 {
1795 /* Change this around - instead of negating the invisible, just 1803 /* Change this around - instead of negating the invisible, just
1796 * 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
1797 * do something to you. Decreasing the duration of invisible 1805 * do something to you. Decreasing the duration of invisible
1798 * 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
1799 * can then basically negate the spell. The spell isn't negated - 1807 * can then basically negate the spell. The spell isn't negated -
1800 * they just know where you are! 1808 * they just know where you are!
1801 */ 1809 */
1802 if ((RANDOM () % 50) <= hide_discovery) 1810 if (rndm (50) <= hide_discovery)
1803 { 1811 {
1804 if (enemy->type == PLAYER) 1812 if (enemy->type == PLAYER)
1805 {
1806 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));
1807 } 1814
1808 return 1; 1815 return 1;
1809 } 1816 }
1810 } 1817 }
1811 } /* within range */ 1818 } /* within range */
1812 1819
1813 /* Wasn't detected above, so still hidden */ 1820 /* Wasn't detected above, so still hidden */
1814 return 0; 1821 return 0;
1815} 1822}
1816 1823
1817/* 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
1818 * intellegent algorithm. For one thing, we ignore los here, SO it 1825 * intelligent algorithm. For one thing, we ignore los here, SO it
1819 * 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
1820 * other side of a wall (!). 1827 * other side of a wall (!).
1821 */ 1828 */
1822
1823int 1829int
1824stand_in_light (object *op) 1830stand_in_light (object *op)
1825{ 1831{
1826 sint16 nx, ny;
1827 maptile *m;
1828
1829
1830 if (!op) 1832 if (op)
1833 {
1834 if (!op->is_on_map ())
1831 return 0; 1835 return 0;
1836
1837 if (op->map->darklevel () <= 0)
1838 return 1;
1839
1832 if (op->glow_radius > 0) 1840 if (op->glow_radius > 0)
1833 return 1; 1841 return 1;
1834 1842
1835 if (op->map) 1843 if (op->map)
1836 { 1844 unordered_mapwalk (op, -MAX_LIGHT_RADIUS, -MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS)
1837 int x, y, x1, y1; 1845 {
1838
1839
1840
1841 /* 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
1842 * 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.
1843 */
1844 for (x = op->x - MAX_LIGHT_RADII; x <= op->x + MAX_LIGHT_RADII; x++)
1845 {
1846 for (y = op->y - MAX_LIGHT_RADII; y <= op->y + MAX_LIGHT_RADII; y++)
1847 { 1848 */
1848 m = op->map; 1849 int light = m->at (nx, ny).light;
1849 nx = x;
1850 ny = y;
1851 1850
1852 if (get_map_flags (m, &m, nx, ny, &nx, &ny) & P_OUT_OF_MAP) 1851 if (expect_false (light > 0) && idistance (dx, dy) <= light)
1853 continue;
1854
1855 x1 = abs (x - op->x) * abs (x - op->x);
1856 y1 = abs (y - op->y) * abs (y - op->y);
1857 if (isqrt (x1 + y1) < GET_MAP_LIGHT (m, nx, ny))
1858 return 1; 1852 return 1;
1859 } 1853 }
1860 }
1861 } 1854 }
1855
1862 return 0; 1856 return 0;
1863} 1857}
1864
1865 1858
1866/* assuming no walls/barriers, lets check to see if its *possible* 1859/* assuming no walls/barriers, lets check to see if its *possible*
1867 * to see an enemy. Note, "detection" is different from "seeing". 1860 * to see an enemy. Note, "detection" is different from "seeing".
1868 * See can_detect_enemy() for more details. -b.t. 1861 * See can_detect_enemy() for more details. -b.t.
1869 * return 0 if can't be seen, 1 if can be 1862 * return 0 if can't be seen, 1 if can be
1870 */ 1863 */
1871
1872int 1864int
1873can_see_enemy (object *op, object *enemy) 1865can_see_enemy (object *op, object *enemy)
1874{ 1866{
1875 object *looker = op->head ? op->head : op; 1867 object *looker = op->head ? op->head : op;
1876 1868
… …
1890 { 1882 {
1891 /* HIDDEN ENEMY. by definition, you can't see hidden stuff! 1883 /* HIDDEN ENEMY. by definition, you can't see hidden stuff!
1892 * However,if you carry any source of light, then the hidden 1884 * However,if you carry any source of light, then the hidden
1893 * creature is seeable (and stupid) */ 1885 * creature is seeable (and stupid) */
1894 1886
1895 if (has_carried_lights (enemy)) 1887 if (enemy->has_carried_lights ())
1896 { 1888 {
1897 if (enemy->hide) 1889 if (enemy->flag [FLAG_HIDDEN])
1898 { 1890 {
1899 make_visible (enemy); 1891 make_visible (enemy);
1900 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!");
1901 } 1893 }
1894
1902 return 1; 1895 return 1;
1903 } 1896 }
1904 else if (enemy->hide) 1897 else if (enemy->flag [FLAG_HIDDEN])
1905 return 0; 1898 return 0;
1906 1899
1907 /* Invisible enemy. Break apart the check for invis undead/invis looker 1900 /* Invisible enemy. Break apart the check for invis undead/invis looker
1908 * 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,
1909 * and making it a conditional makes the code pretty ugly. 1902 * and making it a conditional makes the code pretty ugly.
1910 */ 1903 */
1911 if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE)) 1904 if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE))
1912 {
1913 if (makes_invisible_to (enemy, looker)) 1905 if (makes_invisible_to (enemy, looker))
1914 return 0; 1906 return 0;
1915 }
1916 } 1907 }
1917 else if (looker->type == PLAYER) /* for players, a (possible) shortcut */ 1908 else if (looker->is_player ()) /* for players, a (possible) shortcut */
1918 if (player_can_view (looker, enemy)) 1909 if (player_can_view (looker, enemy))
1919 return 1; 1910 return 1;
1920 1911
1921 /* ENEMY IN DARK MAP. Without infravision, the enemy is not seen 1912 /* ENEMY IN DARK MAP. Without infravision, the enemy is not seen
1922 * unless they carry a light or stand in light. Darkness doesnt 1913 * unless they carry a light or stand in light. Darkness doesnt
… …
1925 * we care about the enemy maps status, not the looker. 1916 * we care about the enemy maps status, not the looker.
1926 * only relevant for tiled maps, but it is possible that the 1917 * only relevant for tiled maps, but it is possible that the
1927 * 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
1928 * case, the looker can still see the enemy 1919 * case, the looker can still see the enemy
1929 */ 1920 */
1930 if (enemy->map->darkness > 0 && !stand_in_light (enemy) 1921 if (!stand_in_light (enemy)
1931 && (!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)))
1932 return 0; 1923 return 0;
1933 1924
1934 return 1; 1925 return 1;
1935} 1926}
1927
1928//-GPL

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