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(Generate patch)

Comparing deliantra/server/server/monster.C (file contents):
Revision 1.67 by root, Fri Sep 25 19:04:13 2009 UTC vs.
Revision 1.72 by root, Fri Nov 6 12:27:06 2009 UTC

… …
3 * 3 *
4 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team 4 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team 5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6 * Copyright (©) 1992,2007 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 * 7 *
8 * Deliantra 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 3 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, see <http://www.gnu.org/licenses/>. 19 * and the GNU General Public License along with this program. If not, see
20 * <http://www.gnu.org/licenses/>.
20 * 21 *
21 * The authors can be reached via e-mail to <support@deliantra.net> 22 * The authors can be reached via e-mail to <support@deliantra.net>
22 */ 23 */
24
25//+GPL
23 26
24#include <global.h> 27#include <global.h>
25#include <sproto.h> 28#include <sproto.h>
26#include <spells.h> 29#include <spells.h>
27#include <skills.h> 30#include <skills.h>
… …
46 npc->enemy = NULL; 49 npc->enemy = NULL;
47 else if (npc->enemy == NULL) 50 else if (npc->enemy == NULL)
48 npc->enemy = npc->owner->enemy; 51 npc->enemy = npc->owner->enemy;
49 } 52 }
50 53
51 /* periodically, a monster mayu change its target. Also, if the object 54 /* periodically, a monster may change its target. Also, if the object
52 * has been destroyed, etc, clear the enemy. 55 * has been destroyed, etc, clear the enemy.
53 * 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
54 * attacked monsters to leave the attacker alone, before it is destroyed 57 * attacked monsters to leave the attacker alone, before it is destroyed
55 */ 58 */
56 /* 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
57 * 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
58 * again then but perhaps get attack on and on 61 * again then but perhaps get attack on and on
59 * 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
60 * too. */ 63 * too. */
61 64
… …
65 * the grouping checks are. Code is the same. 68 * the grouping checks are. Code is the same.
66 */ 69 */
67 if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) || 70 if (QUERY_FLAG (npc->enemy, FLAG_REMOVED) ||
68 QUERY_FLAG (npc->enemy, FLAG_FREED) || 71 QUERY_FLAG (npc->enemy, FLAG_FREED) ||
69 !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))
70 npc->enemy = NULL; 73 npc->enemy = 0;
71 74
72 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)
73 && !(should_arena_attack (npc, npc->owner, npc->enemy))) 76 && !(should_arena_attack (npc, npc->owner, npc->enemy)))
74 || ((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)))
75 || npc->enemy == npc->owner)) 78 || npc->enemy == npc->owner))
76 npc->enemy = NULL; 79 npc->enemy = 0;
77 80
78 81
79 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))
80 npc->enemy = NULL; 83 npc->enemy = 0;
81 84
82 /* 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
83 * target enemy - this code below makes sure the enemy is something 86 * target enemy - this code below makes sure the enemy is something
84 * that should be attacked. My guess is that the arrow hits 87 * that should be attacked. My guess is that the arrow hits
85 * the creature/owner, and so the creature then takes that 88 * the creature/owner, and so the creature then takes that
… …
87 */ 90 */
88 else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER) 91 else if (!QUERY_FLAG (npc->enemy, FLAG_MONSTER)
89 && !QUERY_FLAG (npc->enemy, FLAG_GENERATOR) 92 && !QUERY_FLAG (npc->enemy, FLAG_GENERATOR)
90 && npc->enemy->type != PLAYER 93 && npc->enemy->type != PLAYER
91 && npc->enemy->type != GOLEM) 94 && npc->enemy->type != GOLEM)
92 npc->enemy = NULL; 95 npc->enemy = 0;
93
94 } 96 }
95 97
96 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : NULL; 98 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : 0;
97} 99}
98 100
99/* Returns the nearest living creature (monster or generator). 101/* Returns the nearest living creature (monster or generator).
100 * Modified to deal with tiled maps properly. 102 * Modified to deal with tiled maps properly.
101 * 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
… …
282 284
283 return 0; 285 return 0;
284} 286}
285 287
286/* 288/*
287 * Move-monster returns 1 if the object has been freed, otherwise 0. 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.
288 */ 293 */
289int 294static int
290move_monster (object *op) 295monster_can_pick (object *monster, object *item)
291{ 296{
292 int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */ 297 int flag = 0;
293 object *owner, *enemy, *part, *oph = op; 298 int i;
294 rv_vector rv;
295 299
296 /* Monsters not on maps don't do anything. These monsters are things 300 if (!can_pick (monster, item))
297 * Like royal guards in city dwellers inventories. 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)
311 {
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.
298 */ 365 */
299 if (!op->map) 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)))
300 return 0; 376 return 1;
301 377
302 /* for target facing, we copy this value here for fast access */ 378 return 0;
303 if (oph->head) /* force update the head - one arch one pic */ 379}
304 oph = oph->head;
305 380
306 if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */ 381/*
307 enemy = op->enemy = NULL; 382 * monster_check_pickup(): checks for items that monster can pick up.
308 else if ((enemy = find_enemy (op, &rv))) 383 *
309 /* we have an enemy, just tell him we want him dead */ 384 * Vick's (vick@bern.docs.uu.se) fix 921030 for the sweeper blob.
310 enemy->attacked_by = op; /* our ptr */ 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.
395 */
396static void
397monster_check_pickup (object *monster)
398{
399 object *tmp, *next;
311 400
312 /* generate hp, if applicable */ 401 for (tmp = monster->below; tmp != NULL; tmp = next)
313 if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
314 { 402 {
315 /* last heal is in funny units. Dividing by speed puts 403 next = tmp->below;
316 * the regeneration rate on a basis of time instead of 404 if (monster_can_pick (monster, tmp))
317 * #moves the monster makes. The scaling by 8 is
318 * to capture 8th's of a hp fraction regens
319 * 405 {
320 * Cast to sint32 before comparing to maxhp since otherwise an (sint16) 406 tmp->remove ();
321 * 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.
322 */ 412 */
323 413 if (next && next->destroyed ())
324 op->last_heal += (int) ((float) (8 * op->stats.Con) / FABS (op->speed));
325 op->stats.hp = MIN ((sint32) op->stats.hp + op->last_heal / 32, op->stats.maxhp); /* causes Con/4 hp/tick */
326 op->last_heal %= 32;
327
328 /* So if the monster has gained enough HP that they are no longer afraid */
329 if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short)(((float)op->run_away / 100.f) * (float)op->stats.maxhp))
330 CLEAR_FLAG (op, FLAG_RUN_AWAY);
331
332 if (op->stats.hp > op->stats.maxhp)
333 op->stats.hp = op->stats.maxhp;
334 }
335
336 /* generate sp, if applicable */
337 if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
338 {
339 /* last_sp is in funny units. Dividing by speed puts
340 * the regeneration rate on a basis of time instead of
341 * #moves the monster makes. The scaling by 8 is
342 * to capture 8th's of a sp fraction regens
343 *
344 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
345 * overflow might produce monsters with negative sp.
346 */
347
348 op->last_sp += (int) ((float) (8 * op->stats.Pow) / fabsf (op->speed));
349 op->stats.sp = min (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
350 op->last_sp %= 128;
351 }
352
353 /* this should probably get modified by many more values.
354 * (eg, creatures resistance to fear, level, etc. )
355 */
356 if (QUERY_FLAG (op, FLAG_SCARED) && !(rndm (20)))
357 CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
358
359 if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
360 return QUERY_FLAG (op, FLAG_FREED);
361
362 if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
363 ((op->map->darklevel () > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
364 if (!check_wakeup (op, enemy, &rv))
365 return 0;
366
367 /* check if monster pops out of hidden spot */
368 if (op->flag [FLAG_HIDDEN])
369 do_hidden_move (op);
370
371 if (op->pick_up)
372 monster_check_pickup (op);
373
374 if (op->will_apply)
375 monster_apply_below (op); /* Check for items to apply below */
376
377 /* If we don't have an enemy, do special movement or the like */
378 if (!enemy)
379 {
380 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
381 {
382 op->drop_and_destroy ();
383 return 1; 414 return;
415 }
416}
417
418/*
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)
384 } 433 {
385
386 /* Probably really a bug for a creature to have both
387 * stand still and a movement type set.
388 */
389 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
390 {
391 if (op->attack_movement & HI4)
392 {
393 switch (op->attack_movement & HI4)
394 {
395 case PETMOVE:
396 pet_move (op);
397 break;
398
399 case CIRCLE1:
400 circ1_move (op);
401 break;
402
403 case CIRCLE2:
404 circ2_move (op);
405 break;
406
407 case PACEV:
408 pace_movev (op);
409 break;
410
411 case PACEH:
412 pace_moveh (op);
413 break;
414
415 case PACEV2:
416 pace2_movev (op);
417 break;
418
419 case PACEH2:
420 pace2_moveh (op);
421 break;
422
423 case RANDO: 434 case T_HANDLE:
424 rand_move (op); 435 case TRIGGER:
425 break; 436 if (monster->will_apply & 1)
426 437 manual_apply (monster, tmp, 0);
427 case RANDO2:
428 move_randomly (op);
429 break;
430 }
431
432 return 0;
433 }
434 else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
435 move_randomly (op);
436 } /* stand still */
437
438 return 0;
439 } /* no enemy */
440
441 /* We have an enemy. Block immediately below is for pets */
442 if ((op->attack_movement & HI4) == PETMOVE
443 && (owner = op->owner) != NULL
444 && !on_same_map (op, owner)
445 && !owner->flag [FLAG_REMOVED])
446 return follow_owner (op, owner);
447
448 /* doppleganger code to change monster facing to that of the nearest
449 * player. Hmm. The code is here, but no monster in the current
450 * arch set uses it.
451 */
452 if (op->race == shstr_doppleganger)
453 {
454 op->face = enemy->face;
455 op->name = enemy->name;
456 }
457
458 /* Calculate range information for closest body part - this
459 * is used for the 'skill' code, which isn't that smart when
460 * it comes to figuring it out - otherwise, giants throw boulders
461 * into themselves.
462 */
463 get_rangevector (op, enemy, &rv, 0);
464
465 /* Move the check for scared up here - if the monster was scared,
466 * we were not doing any of the logic below, so might as well save
467 * a few cpu cycles.
468 */
469 if (!QUERY_FLAG (op, FLAG_SCARED))
470 {
471 rv_vector rv1;
472
473 /* now we test every part of an object .... this is a real ugly piece of code */
474 for (part = op; part; part = part->more)
475 {
476 get_rangevector (part, enemy, &rv1, 0x1);
477 dir = rv1.direction;
478
479 /* hm, not sure about this part - in original was a scared flag here too
480 * but that we test above... so can be old code here
481 */
482 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
483 dir = absdir (dir + 4);
484
485 if (QUERY_FLAG (op, FLAG_CONFUSED))
486 dir = absdir (dir + rndm (3) + rndm (3) - 2);
487
488 if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(rndm (3)))
489 if (monster_cast_spell (op, part, enemy, dir, &rv1))
490 return 0;
491
492 if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(rndm (3)))
493 if (monster_use_scroll (op, part, enemy, dir, &rv1))
494 return 0;
495
496 if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(rndm (3)))
497 if (monster_use_range (op, part, enemy, dir))
498 return 0;
499
500 if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(rndm (3)))
501 if (monster_use_skill (op, rv.part, enemy, rv.direction))
502 return 0;
503
504 if (QUERY_FLAG (op, FLAG_READY_BOW) && !(rndm (2)))
505 if (monster_use_bow (op, part, enemy, dir))
506 return 0;
507 } /* for processing of all parts */
508 } /* If not scared */
509
510 part = rv.part;
511 dir = rv.direction;
512
513 // if the enemy is a player, we have los. if los says we
514 // can directly reach the player, we do not deviate.
515 // for non-players, we never deviate
516 if (op->stats.Wis >= 8
517 && enemy->contr && enemy->contr->darkness_at (op->map, op->x, op->y) == LOS_BLOCKED)
518 {
519 int sdir = 0;
520 uint32_t &smell = op->ms ().smell;
521
522 for (int ndir = 1; ndir <= 8; ++ndir)
523 {
524 mapxy pos (op); pos.move (ndir);
525
526 if (pos.normalise ())
527 {
528 mapspace &ms = pos.ms ();
529
530 if (ms.smell > smell)
531 {
532 //printf ("%s: found smell, following it, apparently (%d, %d)\n",& op->name,op->ms().smell,ms.smell);//D
533 if (op->stats.Wis >= 10)
534 smell = ms.smell - 1; // smarter: tell others
535
536 sdir = ndir;
537
538 // perturbing the path might let the monster lose track,
539 // but it will also widen the actual path, spreading information
540 if (op->stats.Wis >= 15 && !rndm (20)) // even smarter, deviate and spread?
541 sdir = absdir (sdir + 1 - rndm (2) * 2);
542 }
543 }
544 }
545
546 if (sdir)
547 dir = sdir;
548 else if (smell)
549 {
550 // no better smell found, so assume the player jumped, and erase this smell
551 //printf ("erasing smell %d\n", op->ms ().smell);//D
552 unordered_mapwalk (op, -1, -1, 1, 1)
553 m->at (nx, ny).smell = 0;
554 }
555 }
556
557 if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
558 dir = absdir (dir + 4);
559
560 if (QUERY_FLAG (op, FLAG_CONFUSED))
561 dir = absdir (dir + rndm (3) + rndm (3) - 2);
562
563 pre_att_dir = dir; /* remember the original direction */
564
565 if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
566 {
567 switch (op->attack_movement & LO4)
568 {
569 case DISTATT:
570 dir = dist_att (dir, op, enemy, part, &rv);
571 break; 438 break;
572 439
573 case RUNATT: 440 case TREASURE:
574 dir = run_att (dir, op, enemy, part, &rv); 441 if (monster->will_apply & 2)
442 manual_apply (monster, tmp, 0);
575 break; 443 break;
576 444
577 case HITRUN:
578 dir = hitrun_att (dir, op, enemy);
579 break;
580
581 case WAITATT:
582 dir = wait_att (dir, op, enemy, part, &rv);
583 break;
584
585 case RUSH: /* default - monster normally moves towards player */
586 case ALLRUN:
587 break;
588
589 case DISTHIT:
590 dir = disthit_att (dir, op, enemy, part, &rv);
591 break;
592
593 case WAIT2:
594 dir = wait_att2 (dir, op, enemy, part, &rv);
595 break;
596
597 default:
598 LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
599 }
600 }
601
602 if (!dir)
603 return 0;
604
605 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
606 {
607 if (move_object (op, dir)) /* Can the monster move directly toward player? */
608 { 445 }
609 /* elmex: Turn our monster after it moved if it has DISTATT attack */ 446 if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
610 if ((op->attack_movement & LO4) == DISTATT) 447 break;
611 op->direction = pre_att_dir;
612
613 return 0;
614 }
615
616 if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
617 {
618 /* Try move around corners if !close */
619 int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || rndm (2)) ? 1 : 2;
620
621 for (diff = 1; diff <= maxdiff; diff++)
622 {
623 /* try different detours */
624 int m = 1 - rndm (2) * 2; /* Try left or right first? */
625
626 if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
627 return 0;
628 }
629 }
630 } /* if monster is not standing still */
631
632 /* elmex: Turn our monster after it moved if it has DISTATT attack */
633 if ((op->attack_movement & LO4) == DISTATT)
634 op->direction = pre_att_dir;
635
636 /*
637 * Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
638 * direction if they can't move away.
639 */
640 if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
641 if (move_randomly (op))
642 return 0;
643
644 /*
645 * Try giving the monster a new enemy - the player that is closest
646 * to it. In this way, it won't just keep trying to get to a target
647 * that is inaccessible.
648 * This could be more clever - it should go through a list of several
649 * enemies, as it is now, you could perhaps get situations where there
650 * are two players flanking the monster at close distance, but which
651 * the monster can't get to, and a third one at a far distance that
652 * the monster could get to - as it is, the monster won't look at that
653 * third one.
654 */
655 if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
656 { 448 }
657 object *nearest_player = get_nearest_player (op);
658
659 if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
660 {
661 op->enemy = 0;
662 enemy = nearest_player;
663 }
664 }
665
666 if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
667 {
668 /* The adjustement to wc that was here before looked totally bogus -
669 * since wc can in fact get negative, that would mean by adding
670 * the current wc, the creature gets better? Instead, just
671 * add a fixed amount - nasty creatures that are runny away should
672 * still be pretty nasty.
673 */
674 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
675 {
676 part->stats.wc += 10;
677 skill_attack (enemy, part, 0, NULL, NULL);
678 part->stats.wc -= 10;
679 }
680 else
681 skill_attack (enemy, part, 0, NULL, NULL);
682 } /* if monster is in attack range */
683
684 if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
685 return 1;
686
687 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
688 {
689 op->drop_and_destroy ();
690 return 1;
691 }
692
693 return 0;
694}
695
696int
697can_hit (object *ob1, object *ob2, rv_vector * rv)
698{
699 object *more;
700 rv_vector rv1;
701
702 if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(rndm (3)))
703 return 0;
704
705 if (abs (rv->distance_x) < 2 && abs (rv->distance_y) < 2)
706 return 1;
707
708 /* check all the parts of ob2 - just because we can't get to
709 * its head doesn't mean we don't want to pound its feet
710 */
711 for (more = ob2->more; more; more = more->more)
712 {
713 get_rangevector (ob1, more, &rv1, 0);
714 if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
715 return 1;
716 }
717
718 return 0;
719} 449}
720 450
721/* Returns 1 is monster should cast spell sp at an enemy 451/* Returns 1 is monster should cast spell sp at an enemy
722 * Returns 0 if the monster should not cast this spell. 452 * Returns 0 if the monster should not cast this spell.
723 * 453 *
… …
731 * 461 *
732 * 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,
733 * 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,
734 * the right type of healing spell could be useful. 464 * the right type of healing spell could be useful.
735 */ 465 */
736
737static int 466static int
738monster_should_cast_spell (object *monster, object *spell_ob) 467monster_should_cast_spell (object *monster, object *spell_ob)
739{ 468{
740 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET || 469 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||
741 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE || 470 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||
… …
744 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 ||
745 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)
746 return 1; 475 return 1;
747 476
748 return 0; 477 return 0;
478}
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;
749} 869}
750 870
751#define MAX_KNOWN_SPELLS 20 871#define MAX_KNOWN_SPELLS 20
752 872
753/* Returns a randomly selected spell. This logic is still 873/* Returns a randomly selected spell. This logic is still
… …
1057 /* in server/player.c */ 1177 /* in server/player.c */
1058 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);
1059 1179
1060} 1180}
1061 1181
1062/* Checks if putting on 'item' will make 'who' do more
1063 * damage. This is a very simplistic check - also checking things
1064 * like speed and ac are also relevant.
1065 *
1066 * return true if item is a better object.
1067 */
1068int
1069check_good_weapon (object *who, object *item)
1070{
1071 object *other_weap;
1072 int val = 0, i;
1073
1074 for (other_weap = who->inv; other_weap; other_weap = other_weap->below)
1075 if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED))
1076 break;
1077
1078 if (!other_weap) /* No other weapons */
1079 return 1;
1080
1081 /* Rather than go through and apply the new one, and see if it is
1082 * better, just do some simple checks
1083 * Put some multipliers for things that hvae several effects,
1084 * eg, magic affects both damage and wc, so it has more weight
1085 */
1086
1087 val = item->stats.dam - other_weap->stats.dam;
1088 val += (item->magic - other_weap->magic) * 3;
1089 /* Monsters don't really get benefits from things like regen rates
1090 * from items. But the bonus for their stats are very important.
1091 */
1092 for (i = 0; i < NUM_STATS; i++)
1093 val += item->stats.stat (i) - other_weap->stats.stat (i) * 2;
1094
1095 if (val > 0)
1096 return 1;
1097 else
1098 return 0;
1099}
1100
1101int
1102check_good_armour (object *who, object *item)
1103{
1104 object *other_armour;
1105 int val = 0, i;
1106
1107 for (other_armour = who->inv; other_armour; other_armour = other_armour->below)
1108 if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED))
1109 break;
1110
1111 if (other_armour == NULL) /* No other armour, use the new */
1112 return 1;
1113
1114 /* Like above function , see which is better */
1115 val = item->stats.ac - other_armour->stats.ac;
1116 val = (item->resist[ATNR_PHYSICAL] - other_armour->resist[ATNR_PHYSICAL]) / 5;
1117 val += (item->magic - other_armour->magic) * 3;
1118
1119 /* for the other protections, do weigh them very much in the equation -
1120 * it is the armor protection which is most important, because there is
1121 * no good way to know what the player may attack the monster with.
1122 * So if the new item has better protection than the old, give that higher
1123 * value. If the reverse, then decrease the value of this item some.
1124 */
1125 for (i = 1; i < NROFATTACKS; i++)
1126 {
1127 if (item->resist[i] > other_armour->resist[i])
1128 val++;
1129 else if (item->resist[i] < other_armour->resist[i])
1130 val--;
1131 }
1132
1133 /* Very few armours have stats, so not much need to worry about those. */
1134
1135 if (val > 0)
1136 return 1;
1137 else
1138 return 0;
1139}
1140
1141/*
1142 * monster_check_pickup(): checks for items that monster can pick up.
1143 *
1144 * Vick's (vick@bern.docs.uu.se) fix 921030 for the sweeper blob.
1145 * Each time the blob passes over some treasure, it will
1146 * grab it a.s.a.p.
1147 *
1148 * Eneq(@csd.uu.se): This can now be defined in the archetypes, added code
1149 * to handle this.
1150 *
1151 * This function was seen be continueing looping at one point (tmp->below
1152 * became a recursive loop. It may be better to call monster_check_apply
1153 * after we pick everything up, since that function may call others which
1154 * affect stacking on this space.
1155 */
1156void
1157monster_check_pickup (object *monster)
1158{
1159 object *tmp, *next;
1160
1161 for (tmp = monster->below; tmp != NULL; tmp = next)
1162 {
1163 next = tmp->below;
1164 if (monster_can_pick (monster, tmp))
1165 {
1166 tmp->remove ();
1167 tmp = insert_ob_in_ob (tmp, monster);
1168 (void) monster_check_apply (monster, tmp);
1169 }
1170 /* We could try to re-establish the cycling, of the space, but probably
1171 * not a big deal to just bail out.
1172 */
1173 if (next && next->destroyed ())
1174 return;
1175 }
1176}
1177
1178/*
1179 * monster_can_pick(): If the monster is interested in picking up
1180 * the item, then return 0. Otherwise 0.
1181 * Instead of pick_up, flags for "greed", etc, should be used.
1182 * I've already utilized flags for bows, wands, rings, etc, etc. -Frank.
1183 */
1184int
1185monster_can_pick (object *monster, object *item)
1186{
1187 int flag = 0;
1188 int i;
1189
1190 if (!can_pick (monster, item))
1191 return 0;
1192
1193 if (QUERY_FLAG (item, FLAG_UNPAID))
1194 return 0;
1195
1196 if (monster->pick_up & 64) /* All */
1197 flag = 1;
1198
1199 else
1200 switch (item->type)
1201 {
1202 case MONEY:
1203 case GEM:
1204 flag = monster->pick_up & 2;
1205 break;
1206
1207 case FOOD:
1208 flag = monster->pick_up & 4;
1209 break;
1210
1211 case WEAPON:
1212 flag = (monster->pick_up & 8) || QUERY_FLAG (monster, FLAG_USE_WEAPON);
1213 break;
1214
1215 case ARMOUR:
1216 case SHIELD:
1217 case HELMET:
1218 case BOOTS:
1219 case GLOVES:
1220 case GIRDLE:
1221 flag = (monster->pick_up & 16) || QUERY_FLAG (monster, FLAG_USE_ARMOUR);
1222 break;
1223
1224 case SKILL:
1225 flag = QUERY_FLAG (monster, FLAG_CAN_USE_SKILL);
1226 break;
1227
1228 case RING:
1229 flag = QUERY_FLAG (monster, FLAG_USE_RING);
1230 break;
1231
1232 case WAND:
1233 case HORN:
1234 case ROD:
1235 flag = QUERY_FLAG (monster, FLAG_USE_RANGE);
1236 break;
1237
1238 case SPELLBOOK:
1239 flag = monster->arch && QUERY_FLAG (monster->arch, FLAG_CAST_SPELL);
1240 break;
1241
1242 case SCROLL:
1243 flag = QUERY_FLAG (monster, FLAG_USE_SCROLL);
1244 break;
1245
1246 case BOW:
1247 case ARROW:
1248 flag = QUERY_FLAG (monster, FLAG_USE_BOW);
1249 break;
1250 }
1251
1252 /* Simplistic check - if the monster has a location to equip it, he will
1253 * pick it up. Note that this doesn't handle cases where an item may
1254 * use several locations.
1255 */
1256 for (i = 0; i < NUM_BODY_LOCATIONS; i++)
1257 {
1258 if (monster->slot[i].info && item->slot[i].info)
1259 {
1260 flag = 1;
1261 break;
1262 }
1263 }
1264
1265 if (((!(monster->pick_up & 32)) && flag) || ((monster->pick_up & 32) && (!flag)))
1266 return 1;
1267
1268 return 0;
1269}
1270
1271/*
1272 * monster_apply_below():
1273 * Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's
1274 * eager to apply things, encounters something apply-able,
1275 * then make him apply it
1276 */
1277void
1278monster_apply_below (object *monster)
1279{
1280 object *tmp, *next;
1281
1282 for (tmp = monster->below; tmp != NULL; tmp = next)
1283 {
1284 next = tmp->below;
1285 switch (tmp->type)
1286 {
1287 case CF_HANDLE:
1288 case TRIGGER:
1289 if (monster->will_apply & 1)
1290 manual_apply (monster, tmp, 0);
1291 break;
1292
1293 case TREASURE:
1294 if (monster->will_apply & 2)
1295 manual_apply (monster, tmp, 0);
1296 break;
1297
1298 }
1299 if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
1300 break;
1301 }
1302}
1303
1304/*
1305 * monster_check_apply() is meant to be called after an item is
1306 * inserted in a monster.
1307 * If an item becomes outdated (monster found a better item),
1308 * a pointer to that object is returned, so it can be dropped.
1309 * (so that other monsters can pick it up and use it)
1310 * Note that as things are now, monsters never drop something -
1311 * they can pick up all that they can use.
1312 */
1313/* Sept 96, fixed this so skills will be readied -b.t.*/
1314void
1315monster_check_apply (object *mon, object *item)
1316{
1317 int flag = 0;
1318
1319 if (item->type == SPELLBOOK && mon->arch && (QUERY_FLAG (mon->arch, FLAG_CAST_SPELL)))
1320 {
1321 SET_FLAG (mon, FLAG_CAST_SPELL);
1322 return;
1323 }
1324
1325 /* If for some reason, this item is already applied, no more work to do */
1326 if (QUERY_FLAG (item, FLAG_APPLIED))
1327 return;
1328
1329 /* Might be better not to do this - if the monster can fire a bow,
1330 * it is possible in his wanderings, he will find one to use. In
1331 * which case, it would be nice to have ammo for it.
1332 */
1333 if (QUERY_FLAG (mon, FLAG_USE_BOW) && item->type == ARROW)
1334 {
1335 /* Check for the right kind of bow */
1336 object *bow;
1337
1338 for (bow = mon->inv; bow; bow = bow->below)
1339 if (bow->type == BOW && bow->race == item->race)
1340 {
1341 SET_FLAG (mon, FLAG_READY_BOW);
1342 LOG (llevMonster, "Found correct bow for arrows.\n");
1343 return; /* nothing more to do for arrows */
1344 }
1345 }
1346
1347 if (item->type == TREASURE && mon->will_apply & WILL_APPLY_TREASURE)
1348 flag = 1;
1349 /* Eating food gets hp back */
1350 else if (item->type == FOOD && mon->will_apply & WILL_APPLY_FOOD)
1351 flag = 1;
1352 else if (item->type == SCROLL && QUERY_FLAG (mon, FLAG_USE_SCROLL))
1353 {
1354 if (!item->inv)
1355 LOG (llevDebug, "Monster %d having scroll %d with empty inventory!", mon->count, item->count);
1356 else if (monster_should_cast_spell (mon, item->inv))
1357 SET_FLAG (mon, FLAG_READY_SCROLL);
1358 /* Don't use it right now */
1359 return;
1360 }
1361 else if (item->type == WEAPON)
1362 flag = check_good_weapon (mon, item);
1363 else if (item->is_armor ())
1364 flag = check_good_armour (mon, item);
1365 /* Should do something more, like make sure this is a better item */
1366 else if (item->type == RING)
1367 flag = 1;
1368 else if (item->type == WAND || item->type == ROD || item->type == HORN)
1369 {
1370 /* We never really 'ready' the wand/rod/horn, because that would mean the
1371 * weapon would get undone.
1372 */
1373 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
1374 {
1375 SET_FLAG (mon, FLAG_READY_RANGE);
1376 SET_FLAG (item, FLAG_APPLIED);
1377 }
1378 return;
1379 }
1380 else if (item->type == BOW)
1381 {
1382 /* We never really 'ready' the bow, because that would mean the
1383 * weapon would get undone.
1384 */
1385 if (!(can_apply_object (mon, item) & CAN_APPLY_NOT_MASK))
1386 SET_FLAG (mon, FLAG_READY_BOW);
1387 return;
1388 }
1389 else if (item->type == SKILL)
1390 {
1391 /*
1392 * skills are specials: monsters must have the 'FLAG_READY_SKILL' flag set,
1393 * else they can't use the skill...
1394 * Skills also don't need to get applied, so return now.
1395 */
1396 SET_FLAG (mon, FLAG_READY_SKILL);
1397 return;
1398 }
1399
1400 /* if we don't match one of the above types, return now.
1401 * can_apply_object will say that we can apply things like flesh,
1402 * bolts, and whatever else, because it only checks against the
1403 * body_info locations.
1404 */
1405 if (!flag)
1406 return;
1407
1408 /* Check to see if the monster can use this item. If not, no need
1409 * to do further processing. Note that can_apply_object already checks
1410 * for the CAN_USE flags.
1411 */
1412 if (can_apply_object (mon, item) & CAN_APPLY_NOT_MASK)
1413 return;
1414
1415 /* should only be applying this item, not unapplying it.
1416 * also, ignore status of curse so they can take off old armour.
1417 * monsters have some advantages after all.
1418 */
1419 manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE);
1420}
1421
1422void 1182void
1423npc_call_help (object *op) 1183npc_call_help (object *op)
1424{ 1184{
1425 unordered_mapwalk (op, -7, -7, 7, 7) 1185 unordered_mapwalk (op, -7, -7, 7, 7)
1426 { 1186 {
… …
1432 1192
1433 for (object *npc = ms.bot; npc; npc = npc->above) 1193 for (object *npc = ms.bot; npc; npc = npc->above)
1434 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE)) 1194 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1435 npc->enemy = op->enemy; 1195 npc->enemy = op->enemy;
1436 } 1196 }
1437}
1438
1439int
1440dist_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
1441{
1442 if (can_hit (part, enemy, rv))
1443 return dir;
1444
1445 if (rv->distance < 10)
1446 return absdir (dir + 4);
1447 else if (rv->distance > 18)
1448 return dir;
1449
1450 return 0;
1451}
1452
1453int
1454run_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
1455{
1456 if (can_hit (part, enemy, rv))
1457 return dir;
1458 else
1459 return absdir (dir + 4);
1460}
1461
1462int
1463hitrun_att (int dir, object *ob, object *enemy)
1464{
1465 if (ob->move_status++ < 25)
1466 return dir;
1467 else if (ob->move_status < 50)
1468 return absdir (dir + 4);
1469 else
1470 ob->move_status = 0;
1471
1472 return absdir (dir + 4);
1473}
1474
1475int
1476wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1477{
1478 int inrange = can_hit (part, enemy, rv);
1479
1480 if (ob->move_status || inrange)
1481 ob->move_status++;
1482
1483 if (ob->move_status == 0)
1484 return 0;
1485 else if (ob->move_status < 10)
1486 return dir;
1487 else if (ob->move_status < 15)
1488 return absdir (dir + 4);
1489
1490 ob->move_status = 0;
1491 return 0;
1492}
1493
1494int
1495disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1496{
1497 /* The logic below here looked plain wrong before. Basically, what should
1498 * happen is that if the creatures hp percentage falls below run_away,
1499 * the creature should run away (dir+4)
1500 * I think its wrong for a creature to have a zero maxhp value, but
1501 * at least one map has this set, and whatever the map contains, the
1502 * server should try to be resilant enough to avoid the problem
1503 */
1504 if (ob->stats.hp * 100 < ob->stats.maxhp * ob->run_away)
1505 return absdir (dir + 4);
1506
1507 return dist_att (dir, ob, enemy, part, rv);
1508}
1509
1510int
1511wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1512{
1513 if (rv->distance < 9)
1514 return absdir (dir + 4);
1515
1516 return 0;
1517}
1518
1519void
1520circ1_move (object *ob)
1521{
1522 static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 };
1523
1524 if (++ob->move_status > 11)
1525 ob->move_status = 0;
1526
1527 if (!(move_object (ob, circle[ob->move_status])))
1528 move_object (ob, rndm (8) + 1);
1529}
1530
1531void
1532circ2_move (object *ob)
1533{
1534 static int circle[20] = { 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 1, 1, 1, 2, 2 };
1535
1536 if (++ob->move_status > 19)
1537 ob->move_status = 0;
1538
1539 if (!(move_object (ob, circle[ob->move_status])))
1540 move_object (ob, rndm (8) + 1);
1541}
1542
1543void
1544pace_movev (object *ob)
1545{
1546 if (ob->move_status++ > 6)
1547 ob->move_status = 0;
1548
1549 if (ob->move_status < 4)
1550 move_object (ob, 5);
1551 else
1552 move_object (ob, 1);
1553}
1554
1555void
1556pace_moveh (object *ob)
1557{
1558 if (ob->move_status++ > 6)
1559 ob->move_status = 0;
1560
1561 if (ob->move_status < 4)
1562 move_object (ob, 3);
1563 else
1564 move_object (ob, 7);
1565}
1566
1567void
1568pace2_movev (object *ob)
1569{
1570 if (ob->move_status++ > 16)
1571 ob->move_status = 0;
1572
1573 if (ob->move_status < 6)
1574 move_object (ob, 5);
1575 else if (ob->move_status < 8)
1576 return;
1577 else if (ob->move_status < 13)
1578 move_object (ob, 1);
1579 else
1580 return;
1581}
1582
1583void
1584pace2_moveh (object *ob)
1585{
1586 if (ob->move_status++ > 16)
1587 ob->move_status = 0;
1588
1589 if (ob->move_status < 6)
1590 move_object (ob, 3);
1591 else if (ob->move_status < 8)
1592 return;
1593 else if (ob->move_status < 13)
1594 move_object (ob, 7);
1595 else
1596 return;
1597}
1598
1599void
1600rand_move (object *ob)
1601{
1602 if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(rndm (9)))))
1603 for (int i = 0; i < 5; i++)
1604 if (move_object (ob, ob->move_status = rndm (8) + 1))
1605 return;
1606} 1197}
1607 1198
1608void 1199void
1609check_earthwalls (object *op, maptile *m, int x, int y) 1200check_earthwalls (object *op, maptile *m, int x, int y)
1610{ 1201{
… …
1661#ifdef DEBUG_THROW 1252#ifdef DEBUG_THROW
1662 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);
1663#endif 1254#endif
1664 1255
1665 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;
1666} 1671}
1667 1672
1668/* 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
1669 * 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
1670 * 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.
… …
1918 return 0; 1923 return 0;
1919 1924
1920 return 1; 1925 return 1;
1921} 1926}
1922 1927
1928//-GPL

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